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Title:
CHIP CARD READER WITH END OF TRAVEL SWITCH
Document Type and Number:
WIPO Patent Application WO/2003/005286
Kind Code:
A1
Abstract:
A memory card connector assembly (30) includes a switch for detecting insertion of a memory card (C) into the connector. A connector housing receives the memory card for movement from a preload position to an inserted position. The switch is attached to the housing and includes a switch member movable between an open position and a closed position. The switch also includes a fixed switch contact (76) and a movable switch contact (78) operatively associated with the switch member for movement into engagement with the fixed switch contact in response to movement of the switch member from its open position to its closed position. A cover (80) encloses the switch contacts and at least a portion of the switch member, with the switch member having an actuating portion projecting through an opening in the cover and into the path of movement of the memory card. As the card moves from its preload position to its inserted position, the card engages the switch member to move the switch member from its open position to its closed position, engaging the switch contacts, and thereby detect insertion of the memory card into the connector.

Inventors:
Yagi, Masanori (17-5-102 Kokubu-minami 3-chome, Ebina, Kanagawa, JP)
Ito, Yoshikazu (2408-5 Kamiwada, Yamato-shi, Kanagawa, JP)
Application Number:
PCT/US2002/020226
Publication Date:
January 16, 2003
Filing Date:
June 26, 2002
Export Citation:
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Assignee:
MOLEX INCORPORATED (2222 Wellington Court, Lisle, IL, 60532, US)
Yagi, Masanori (17-5-102 Kokubu-minami 3-chome, Ebina, Kanagawa, JP)
Ito, Yoshikazu (2408-5 Kamiwada, Yamato-shi, Kanagawa, JP)
International Classes:
G06K17/00; G06K13/08; H01H27/00; H01R13/64; (IPC1-7): G06K7/00; G06K13/067
Foreign References:
EP0889493A2
US5924881A
US5395259A
EP0669590A2
Attorney, Agent or Firm:
Caldwell, Stacey E. (Molex Incorporated, 2222 Wellington Court Lisle, IL, 60532, US)
Download PDF:
Claims:
CLAIMS:
1. A memory card connector assembly including a switch for detecting insertion of a memory card into the connector, comprising: a connector housing for receiving the memory card movable from a preload position to an inserted position; and a switch attached to the housing and including a switch member movable between an open position and a closed position; a fixed switch contact, a movable switch contact operatively associated with the switch member for movement into engagement with the fixed switch contact in response to movement of the switch member from its open position to its closed position, a cover for enclosing the switch contacts and at least a portion of the switch member; and said switch member having an actuating portion projecting through an opening in the cover and into the path of movement of the memory card, whereby movement of the memory card from its preload position to its inserted position causes the switch member to move from its open position to its closed position engaging the switch contacts and thereby detect insertion of the memory card into the connector.
2. The memory cad connector assembly of claim 1 wherein said switch member is fabricated of dielectric material and is engageable with the movable switch contact.
3. The memory cad connector assembly of claim 2 wherein said switch member is pivotally mounted for pivotal movement between its open and closed positions.
4. The memory cad connector assembly of claim 1 wherein said cover is fabricated of conductive metal material and the fixed switch contact is integral with the cover.
5. The memory cad connector assembly of claim 4 wherein said cover is stamped and formed of sheet metal material and the fixed contact comprises an integral portion of the cover bent into the interior thereof.
6. The memory cad connector assembly of claim 4 wherein said cover is mounted on a circuit board attached to the connector housing.
7. The memory cad connector assembly of claim 6 wherein said cover includes at least one foot portion connected to circuit means on the circuit board.
8. The memory cad connector assembly of claim 1 wherein said switch is mounted on a circuit board attached to the connector housing.
9. The memory cad connector assembly of claim 8 wherein said fixed and movable switch contacts have feet portions connected to circuit means on the circuit board.
10. A memory card connector assembly for mounting on a circuit board and including a switch for detecting insertion of a memory card into the connector, comprising: a connector housing for receiving the memory card movable from a preload position to an inserted position; and a switch attached to the housing and including a switch member movable between an open position and a closed position, a cover for covering at least a portion of the switch member with the cover being fabricated of conductive metal material and including a fixed switch contact integral therewith and the cover having at least one foot portion connected to circuit means on the circuit board, a movable switch contact within the cover and operatively associated with the switch member for movement into engagement with the fixed switch contact in response to movement of the switch member from its open position to its closed position and the movable switch contact having a foot portion connected to circuit means on the circuit board; and said switch member having an actuating portion projecting through an opening in the cover and into the path of movement of the memory card, whereby movement of the memory card from its preload position to its inserted position causes the switch member to move from its open position to its closed position engaging the switch contacts and thereby detect insertion of the memory card into the connector.
11. The memory cad connector assembly of claim 10 wherein said switch member is fabricated of dielectric material and is engageable with the movable switch contact.
12. The memory cad connector assembly of claim 11 wherein said switch member is pivotally mounted for pivotal movement between its open and closed positions.
13. The memory cad connector assembly of claim 10 wherein said cover is stamped and formed of sheet metal material and the fixed contact comprises an integral portion of the cover bent into the interior thereof.
14. A memory card connector assembly including a switch for detecting insertion of a memory card into the connector, comprising: a connector housing for receiving the memory card movable from a preload position to an inserted position; and a switch attached to the housing and including a switch member movable between an open position and a closed position; a fixed switch contact, a movable switch contact operatively associated with the switch member for movement into engagement with the fixed switch contact in response to movement of the switch member from its open position to its closed position, a cover for enclosing the switch contacts and at least a portion of the switch member with the cover being fabricated of conductive metal material and having said fixed switch contact integral therewith; and said switch member having an actuating portion projecting through an opening in the cover and into the path of movement of the memory card, whereby movement of the memory card from its preload position to its inserted position causes the switch member to move from its open position to its closed position engaging the switch contacts and thereby detect insertion of the memory card into the connector.
15. The memory cad connector assembly of claim 14 wherein said switch member is fabricated of dielectric material and is engageable with the movable switch contact.
16. The memory cad connector assembly of claim 15 wherein said switch member is pivotally mounted for pivotal movement between its open and closed positions.
17. The memory cad connector assembly of claim 14 wherein said cover is stamped and formed of sheet metal material and the fixed contact comprises an integral portion of the cover bent into the interior thereof.
18. The memory cad connector assembly of claim 17 wherein said cover is mounted on a circuit board attached to the connector housing.
19. The memory cad connector assembly of claim 18 wherein said cover includes at least one foot portion connected to circuit means on the circuit board.
20. The memory cad connector assembly of claim 14 wherein said switch is mounted on a circuit board attached to the connector housing.
21. The memory cad connector assembly of claim 20 wherein said fixed and movable switch contacts have feet portions connected to circuit means on the circuit board. AMENDED CLAIMS [received by the International Bureau on 02 December 2002 (02.12. 02); original claims 121 replaced by new claims 121 (4 pages)] 1. A memory card connector assembly (30) including a switch (70) for detecting insertion of a memory card (C) into the connector, comprising: a connector housing (32) for receiving the memory card (C) movable from a preload position to an inserted position; and a switch (70) attached to the housing (32) and including a switch member (74) movable between an open position and a closed position; a fixed switch contact (76), a movable switch contact (78) in contact with the switch member (74) for movement into engagement with the fixed switch contact (76) in response to movement of the switch member from its open position to its closed position, a cover (80) for enclosing the switch contacts and at least a porlion of the switch member; and said switch member (74) having an actuating portion (74c) projecting through an opening (80a) in the cover (80) and into the path of movement of the memory card (C), wherein said switch member substantially blocks said opening in said cover when said switch member is in its open position, whereby movement of the memory card (C) from its preload position to its inserted position causes the switch member (74) to move from its open position to its closed position engaging the switch contacts (76,78) and thereby detect insertion of the memory card (C) into the connector (30).
22. 2 The memory card connector assembly (30) of claim 1 wherein said switch member (74) is fabricated of dielectric material and is engageable with the movable switch contact (78).
23. 3 The memory card connector assembly (30) of claim 2 wherein said switch member (74) is pivotally mounted for pivotal movement between its open and closed positions.
24. 4 The memory card connector assembly (30) of claim 1 wherein said cover is fabricated of conductive metal material and the fixed switch contact (76) is integral with the cover (8D).
25. 5 The memory card connector assembly (30) of claim 4 wherein said cover (80) is stamped and formed of sheet metal material and the fixed contact (76) comprises an integral portion of the cover (80) bent into the interior thereof.
26. 6 The memory card connector assembly (30) of claim 4 wherein said cover (80) is mounted on a circuit board B attached to the connector housing (32).
27. 7 The memory card connector assembly (30) of claim 6 wherein said cover (80) includes at least one foot portion (82) connected to circuit means (66) on the circuit board.
28. 8 The memory card connector assembly (30) of claim 1 wherein said switch (70) is mounted on a circuit board B attached to the connector housing (32).
29. 9 The memory card connector assembly (30) of claim 8 wherein said fixed (76) and movable (78) switch contacts have feet portions (78a) connected to circuit means (66) on the circuit board B.
30. 10 A memory card connector assembly (30) for mounting on a circuit board B and including a switch (70) for detecting insertion of a memory card C into the connector, comprising : a connector housing (32) for receiving the memory card C movable from a preload position to an inserted position; and a switch (70) attached to the housing (32) and including a switch member (74) movable between an open position and a closed position, a cover (80) for covering at least a portion of the switch member (74) with the cover (80) being fabricated of conductive metal material and including a fixed switch contact (76) integral therewith and the cover having at least one foot portion (82) connected to circuit means (66) on the circuit board B, a movable switch contact (78) within the cover (80) and operatively associated with the switch member (74) for movement into engagement with the fixed switch contact in response to movement of the switch member from its open position to its closed position and the movable switch contact (78) having a foot portion (78a) connected to circuit means on the circuit board; and said switch member (74) having an actuating portion (74c) projecting through an opening (80a) in the cover and into the path of movement of the memory card C, whereby movement of the memory card C from its preload position to its inserted position causes the switch member (74) to move from its open position to its closed position engaging the switch contacts and thereby detect insertion of the memory card C into the connector (30).
31. 11 The memory card connector assembly (30) of claim 10 wherein said switch member (74) is fabricated of dielectric material and is engageable with the movable switch contact (78).
32. 12 The memory card connector assembly (30) of claim 11 wherein said switch member (74) is pivotally mounted for pivotal movement between its open and closed positions.
33. 13 The memory card connector assembly (30) of claim 10 wherein said cover (80) is stamped and formed of sheet metal material and the fixed contact (76) comprises an integral portion of the cover (80) bent into the interior thereof.
34. 14 A memory card connector assembly (30) including a switch (70) for detecting insertion of a memory card C into the connector, comprising: a connector housing (32) for receiving the memory card C movable from a preload position to an inserted position; and a switch (70) attached to the housing (32) and including a switch member (74) movable between an open position and a closed position; a fixed switch contact (76), a movable switch contact (78) operatively associated with the switch member (74) for movement into engagement with the fixed switch contact (76) in response to movement of the switch member (74) from its open position to its closed position, a cover (80) for enclosing the switch contacts (76,78) and at least a portion of the switch member (74) with the cover being fabricated of conductive metal material and having said fixed switch contact integral therewith; and said switch member (74) having an actuating portion (74c) projecting through an opening (80a) in the cover (80) and into the path of movement of the memory card C, whereby movement of the memory card C from its preload position to its inserted position causes the switch member (74) to move from its open position to its closed position engaging the switch contacts (76,78) and thereby detect insertion of the memory card C into the connector (30).
35. 15 The memory card connector assembly (30) of claim 14 wherein said switch member (74) is fabricated of dielectric material and is engageable with the movable switch contact (78).
36. 16 The memory card connector assembly (30) of claim 15 wherein said switch member (74) is pivotally mounted for pivotal movement between its open and closed positions.
37. 17 The memory card connector assembly (30) of claim 14 wherein said cover (80) is stamped and formed of sheet metal material and the fixed contact (76) comprises an integral portion of the cover (80) bent into the interior thereof.
38. 18 The memory card connector assembly (30) of claim 17 wherein said cover (80) is mounted on a circuit board attached to the connector housing (32).
39. 19 The memory card connector assembly (30) of claim 18 wherein said cover (80) includes at least one foot portion (82) connected to circuit means (66) on the circuit board.
40. 20 The memory card connector assembly (30) of claim 14 wherein said switch (70) is mounted on a circuit board B attached to the connector housing (32).
41. 21 The memory card connector assembly (30) of claim 20 wherein said fixed (76) and movable (78) switch contacts have feet portions (78a) connected to circuit means (66) on the circuit board B.
Description:
CHIP CARD READER WITH END OF TRAVEL SWITCH Field of the Invention: This invention generally relates to the art of electrical connectors and, particularly, to a memory card connector assembly including a switch for detecting insertion of a card into the connector.

Background of the Invention: Memory cards are known in the art and contain intelligence in the form of a memory circuit or other electronic program. Some form of card reader reads the information or memory stored on the card. Memory cards are used in many applications in today's electronic society, including video cameras, smartphones,. music players, ATMs, cable television decoders, toys, games, PC adapters and other electronic applications. A typical memory card includes a contact or terminal array for connection through an electrical connector to a card reader system and then to external equipment. The connector readily accommodates insertion and removal of the card to provide quick access to the information and program on the card.

The card connector typically includes terminals for yieldably engaging the contact or terminal array of the card.

Some memory card connectors include a switch for detecting insertion of the card into the connector. An example is shown in Japanese Patent Application Laid-Open No. 11- 86978. Such switches have various problems such as a tendency of dust and dirt to accumulate on the switch contacts. In addition, the switches are often difficult and expensive to manufacture because of the multiple switch components involved. The present invention is directed to solving these problems in a very simple and efficient switch construction.

Summary of the Invention: An object, therefore, of the invention is to provide a new and improved memory card connector assembly which includes an improved switch for detecting insertion of a memory card into the connector.

In the exemplary embodiment of the invention, a connector housing is provided for receiving the memory card movable from a preload position to an inserted position. A switch is attached to the housing and includes a switch member movable between an open position and a closed position. The switch has a fixed switch contact, and a movable switch contact is operatively associated with the switch member for movement into engagement with the fixed switch contact in response to movement of the switch member from its open position to its closed position. A cover is provided for enclosing the switch contacts and at least a portion of the switch member. The switch member has an actuating portion projecting through an opening in the cover and into the path of movement of the memory card. Therefore, movement of the memory card from its preload position to its inserted position causes the switch member to move from its open position to its closed position and thereby detect insertion of the memory card into the connector.

According to one aspect of the invention, the cover is fabricated of conductive metal material and the fixed switch contact is integral with the cover. As disclosed herein, the cover is stamped and formed of sheet metal material, and the fixed contact is formed by an integral portion of the cover bent into the interior thereof.

According to another aspect of the invention, the switch is mounted on a circuit board attached to the connector housing. The fixed and movable switch contacts have feet portions connected to circuit means on the circuit board. With the fixed contact being an integral portion of the cover, the cover is mounted on the circuit board and includes at least one foot portion connected to circuit means on the printed circuit board.

Finally, the switch member is fabricated of dielectric material and is engageable directly with the movable switch contact. The switch member is pivotally mounted for pivotal movement between its open and closed position Other objects, features and advantages of the invention will be apparent from the following detailed description taken in connection with the accompanying drawings.

Brief Description of the Drawings : The features of this invention which are believed to be novel are set forth with particularity in the appended claims. The invention, together with its objects and the advantages thereof, may be best understood by reference to the following description taken in

conjunction with the accompanying drawings, in which like reference numerals identify like elements in the figures and in which: FIG. 1 is a top plan view of a card connector according to the invention; FIG. 2 is a side elevational view of the connector, looking at the left-hand side of FIG.

1 ; FIGS. 3-8 are enlarged-scale plan views of the corner of the connector where the eject device is located and showing sequential views of the operation thereof ; FIG. 9 is a bottom plan view of the connector; FIG. 10 is a perspective view of the oil damper module; FIG. 11 is a plan view of the circuit board including the switch of the invention; FIG. 12 is an enlarged plan view of the terminals and the switch on the circuit board; FIG. 13 is a rear elevational view looking toward the rear of FIG. 12; FIG. 14 is an enlarged vertical section taken generally along line 14-14 of FIG. 12; FIGS. 15 and 16 are views showing the preload and inserted positions of the memory card, in conjunction with the open and closed positions of the switch; and FIGS. 17 and 18 are sectional views showing the open and closed positions, respectively, of a prior art switch.

Detailed Description of the Preferred Embodiment: Referring to the drawings in greater detail, and first to FIGS. 1 and 2, the invention is embodied in a memory card connector, generally designated 30, which has a thin box-like shape substantially rectangular in a plan view and includes a main body 32 and a cover 34.

The cover is superimposed and mounted on the body for sliding movement relative thereto between an inoperative position P1 and an eject position P2. An eject device, generally designated 36, is provided for ejecting a memory card C which is inserted between body 32 and cover 34 in the direction of arrow"A" (Fig. 1), to a fully inserted or mated position, described hereinafter.

Main body 32 has upwardly extending side walls 32 (Fig. 2). Both side edges of cover 34 have downwardly bent tabs 34a which are provided with slits 34b which received convex portions on side walls 32a of body 32. The convex portions which are disposed in slits 34b not only attach the cover to the body but cooperatively guide sliding movement of

the cover relative to the body. The cover also has a pair of gear racks 35 formed integrally therewith and projecting outwardly from opposite sides of the cover.

As seen in FIG. 2, a thin board B is mounted to a back or underside of body 32. The board is a circuit board with wiring patterns and terminals that are connected to the wiring patterns, although the wiring patterns and terminals are not visible in the drawings. The terminals are engageable with contacts (not shown) on the underside of memory card C when it is inserted into its fully mated position within the connector. An electrical cable 38 is connected to the wiring patterns on circuit board B. Although not visible in the drawings, the terminals on the circuit board extend through holes formed in body 32 and into the card- receiving space between the body and cover 34, so that the terminals contact the contacts on the underside of the memory card when in its fully mated position.

Referring to FIG. 3 in conjunction with FIG. 1, eject device 13 includes a rotary member 40 rotatably mounted on a rotational shaft 42 which is integral with or mounted to body 32. A single torsion coil spring 44 embraces the rotational shaft, whereby the axis of the torsion coil spring is coincident with the axis of rotation of rotary member 40. Generally, the single coil spring has a first portion or end 44a operatively associated with cover 34 to bias the cover toward its inoperative position Pl. The torsion coil spring 15 has a second portion or opposite end 44b operatively associated with memory card C for biasing the card in an eject direction opposite the insertion direction of arrow"A" (Fig. 1).

More particularly, first portion or end 44a of torsion coil spring 44 engages a leading end 34c of cover 34. The second portion or opposite end 44b of the torsion coil spring is secured to rotary member 40 which has a card push-out portion 40a which engages a front or lead edge C1 of memory card C.

Generally, an inhibiting means, generally designated 46 (Fig. 3), is operatively associated between cover 34 and second portion 44b of torsion coil spring 44, to prevent the second portion of the coil spring from ejecting the memory card until the cover substantially reaches its eject position P2. In particular, a latch arm 48 is provided on the cover and is engageable with a latch surface 40b on rotary member 40. The latch arm is slidably movable along the latch surface until the latch arm reaches an end-point 50 of the latch surface, whereat the latch arm disengages from the latch surface and moves onto an inner circumferential surface 40c, for purposes described hereinafter.

The operation of eject device 36 now will be described. For ejection purposes, an eject button 52 (Figs. 1 and 2) may be attached to cover 34. An operator pushes in on the eject button to cause cover 34 to slidably move on body 32 in the direction of arrow"B" (Fig.

1). The cover is moved from its inoperative position PI to its eject position P2. During the course of this sliding movement, leading end 34c of the cover is in engagement with the first portion or end 44a of torsion coil spring 44. FIG. 3 shows the position of the cover and first end 44a of the spring when the cover is in its inoperative position. FIG. 4 shows the cover having been pushed toward its eject position, and it can be seen that first end 44a of the torsion coil spring has moved with the cover to store further energy in the first end of the spring. However, it should be noted in FIG. 4 that, while latch arm 48 on the cover has moved along latch surface 40b of rotary member 40, the rotary member still is inhibited from rotating clockwise because latch arm 50 has not reached end-point 40 of the latch surface.

FIG. 5 shows cover 34 having been moved completely to its eject position P2. It can be seen that latch arm 48 has moved off of end-point 50 of latch surface 40b and onto inner circumferential surface 40c, whereupon rotary member 40 now moves clockwise in the direction of arrow"C"under the influence of the second portion or opposite end 44b of the torsion coil spring, the opposite end being secured to rotary member 40. When the rotary member is moved clockwise by the torsion coil spring, card push-out portion 40a of the rotary member engages the front or lead edge C1 of memory card C to eject the memory card in the direction of arrow"D".

FIGS. 6,7 and 8 basically are duplications of FIGS. 5,4 and 3, respectively, to show the reverse action of eject device 36 when memory card C is inserted into the connector in the direction of arrow"A" (Fig. 6). Specifically, lead edge Cl of memory card C engages card push-out portion 40a on rotary member 40 to move the rotary member counterclockwise in the direction of arrow"E"while, at the same time, biasing or cocking the second portion or opposite end 44b of torsion coil spring 44 also in the counterclockwise direction.

Further movement of memory card C toward its fully inserted or mated position is shown in FIG. 7. However, cover 34 has yet to move back from its eject position P2 to its inoperative position P1, because latch arm 48 has yet to reach end-point 50 of latch surface 40b.

FIG. 8 shows that latch arm 48 on cover 34 has passed end-point 50 and has moved along latch surface 40b, as the first portion or end 44a of the torsion coil spring has moved cover 34 back to its inoperative position in the direction of arrow"F". FIG. 8 shows that rotary member 40 has a protruding engagement portion 52 which defines a stop for engaging latch arm 48 when the cover returns to its inoperative position. In other words, the stop defined by protruding portion 52 defines the outer or inoperative position of the cover, while inner circumferential surface 40c of the rotary member defines the inner or eject position of the cover.

Referring to FIGS. 9 and 10, a decelerating device, generally designated 60, includes an oil damper module, generally designated 62, interconnected between a casing or other rigid support 64 and housing 32 of connector 30. The oil damper module includes a housing 62a filled with oil as is known in the art. The housing has one ear 62b with a hole 62c for mounting over a mounting post 32b of the housing. A second ear 62d has a notch 62e for engaging a tab 64a of casing 64. The oil damper module has an external pinion gear 62f which engages one of the gear racks 35 projecting outwardly from the side of the cover. Two gear racks 35 are disposed at opposite sides of the cover in the event that it is desirable to have bilaterally symmetrical deceleration of the cover. In that event, a second oil damper module 62 would be employed at the opposite side of the connector.

As seen in FIG. 9, the length Hl of gear rack 35 in the sliding direction of the cover is smaller than the length H2 of the entire cover. This is because it is only necessary for the gear rack (s) to be long enough to be capable of reducing the speed at which the cover slides.

Oil damper modules such as oil damper module 62 are conventional available items.

FIG. 9 best shows where circuit board B is mounted at the back or bottom side of housing 32 of connector 30. FIG. 11 shows the inside of the circuit board, i. e. , the side facing the bottom of the connector housing. The circuit board includes a wiring pattern 66 and a plurality of terminals 68 connected to the wiring pattern and adapted to be brought into contact with contacts on the bottom surface of memory card C. Cable 38 (Fig. 9) is connected to the wiring pattern. Terminals 68 on the surface of circuit board B extend through holes (not shown) formed in the back of connector body 32 to be positioned in a card-receiving space formed between the body and cover 34, whereby the terminals can be brought into contact with the contacts of the memory card when the card is inserted into the

connector. A detection switch, generally designated 70, also is mounted to circuit board B for detecting insertion of the memory card into the connector, as described hereinafter.

Referring to FIGS. 12 and 13 in conjunction with FIG. 11, a switch frame, generally designated 72, has an arm portion 72a leading to switch 70. The switch frame has a body 72b secured to the circuit board by a pair of mounting posts 72c.

Referring to FIG. 14, detection switch 70 includes a dielectric switch member 74, a fixed switch contact 76 and a movable switch contact 78. It can be seen in FIG. 14 that the movable switch contact has a foot portion 78a for connection in the wiring pattern 66 of circuit board B. A cover, generally designated 80, encloses switch contacts 76 and 78 and portions of switch member 74. The cover has an opening 80a through which a portion of switch member 72 projects as seen in FIGS. 13 and 14.

Referring to FIG. 15 in conjunction with FIG. 14, cover 80 is stamped and formed of sheet metal material and includes side walls 80b which, in conjunction with the substrate of circuit board B forms a substantially closed cavity 82 which surrounds fixed switch contact 76 and movable switch contact 78 to prevent dust and dirt from accumulating on the switch contacts. FIG. 15 shows that switch member 74 has lips 74a which substantially close opening 80a in cover 80 in the normally open condition of the switch shown in FIG. 15. The switch member has a pivot shaft 74b pivotally mounted in the side walls of the cover whereby the switch member is pivotally movable between a switch open position shown in FIG. 15 and a switch closed position shown in FIG. 16.

The operation of switch 70 now will be described in relation to FIGS. 15 and 16. FIG.

15 shows the normally open condition of the switch. Movable switch contact 78 is separated from fixed switch contact 76. The movable switch contact is in the form of a flexible arm, and the arm biases switch member 74 upwardly within opening 80a of cover 80. Memory card C is insertable into the connector in the direction of arrow"A", and it can be seen that an angled abutment surface 74c of the switch member is in the path of movement of the inserted memory card.

FIG. 16 shows memory card C having been fully inserted into the connector in the direction of arrow"A". The leading edge Cl of the memory card engages angled surface 70c of switch member 70 and causes the switch member to pivot about pivot shaft 74b and bias movable switch contact 78 downwardly in the direction of arrow"D"and into engagement

with fixed switch contact 76, to close the switch and, thereby, detect insertion of the memory card into the connector.

FIGS. 14-16 also show a unique feature of the invention whereby fixed switch contact 76 is integral with cover 80. In other words, the cover may be stamped and formed of conductive sheet metal material, and fixed contact 76 is formed by an inwardly bent integral portion of the cover, the inwardly bent portion projecting into cavity 82 (Fig. 15). In comparing FIG. 15 with FIG. 16, it can be seen that the fixed contact 76 actually can flex downwardly in the direction of arrow"D"when the switch is closed, thereby increasing the positive contact forces between the switch contacts. With the fixed switch contact being integral with the cover, the cover has feet portions 82 connected to the wiring pattern 66 on circuit board B.

FIGS. 17 and 18 show a prior art switch in a card connector, generally designated 90.

The connector includes a housing 92 mounting a fixed switch contact 94 and a movable switch contact 96. The movable switch contact projects upwardly through an opening 98 in the cover. Such prior art switches are completely open and, as a result, dust and dirt readily accumulate on the switch contacts and deteriorate the switching functions of the switch.

It will be understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. The present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein.