BACKGROUND OF THE INVENTION

Field of Invention

The present invention relates to a slider switch, in particular, to a slider switch for turning on and off the fan and adjusting the fan speed in a thermostat.

The present invention further relates to a thermostat controller using said slider switch.

Related Art

In various kinds of speed adjusting controllers, a slider switch could be used for switching among circuit phases of different functions. However, a few switching devices might be employed together to accomplish the control function since there are too many subjects to be controlled at same time. For example, in the existing thermostat controllers, the fan speed is controlled by two slider switches, in which one slider switch is used for turning the fan on and off, and the other slider switch is used for controlling the speed of the fan. Said slider switches are both set in the thermostat controller, thereby bringing the thermostat controller with a large volume and a high cost.

In addition, only adjacent contact points could be connected on the glide direction of the slider switch in the existing slider switches. In this case, if two rows of contact points, each of which has m contact points, are arranged in the glide direction on the circuit board, a pair of neighboring contact points in each row could be connected at the same time by operating the slider switch, so that two circuits are linked to accomplish switching among m-1 control phases. In some situations, the slider switch is required to connect three pairs of contact points at the same time for linking three circuits, in which case the circuits of the slider switch have to be re-configured to meet such demands.

Moreover, the slider is connected to the contact points on the circuit board via a point contact and thus there tends to be a deficient contact therebetween in the existing slider switch. Furthermore, the smaller the contact surface between the slider and the contact points is, the higher the contact resistance will be. Therefore, the slider switch would generate too much heat when used for controlling a large current, disadvantageous^ affecting the reliability of the thermostat controller.

SUMMARY OF THE INVENTION

It is therefore an object of the present invention to provide a slider switch, which could achieve both the function of turning the circuit on and off and the function of adjusting different operation conditions when the circuit is on.

Another object of the present invention is to provide a slider switch in which two rows of several contact points are arranged on the glide direction thereof. Such a switch could accomplish switching among different phases and connecting three circuits.

A further object of the present invention is to provide a slider switch to increase the contact surface at each contact position therein, and reduce the contact resistance.

One more abject of the present invention is to provide a thermostat controller which could employ only one slider switch to turn the fan on and off and adjust the fan speed.

To achieve the objects thus mentioned, certain exemplary embodiments can provide a slider switch, comprising a base, a slider set in the base and several pins arranged in two rows, in which the slider could glide in the glide direction defined by said two rows of pins. A contact element could be provided on each of two sides of the slider opposite to the pins, and each of said contact elements could electrically connect a pair of neighboring pins in the same row. A first elastic element and a contact sheet could be provided along the glide direction in the base. One end of the first elastic element could be connected with the base, and the other end of the first elastic element could be connected with the contact sheet. One end surface of the slider adjacent to the contact sheet could be pressed against the contact sheet from a direction opposite to the first elastic element. When each of said contact elements is in contact with a pair of said pins closest to the contact sheet, the contact sheet could be separate from said two pins closest to the contact sheet with the pressure from the slider. When each of said contact elements is in contact with other pairs of pins other than those closest to the contact sheet, the contact sheet could be pressed against said two pins closest to the contact sheet by the first elastic element.

According to certain exemplary embodiments of the slider switch, the contact elements can have a planar end surface opposite to the pins in the direction vertical to the glide direction.

According to certain exemplary embodiments of the slider switch, a second elastic element can be further provided between the contact elements and the slider and could press the contact elements against the pins.

According to certain exemplary embodiments of the slider switch, the second elastic element can be a pair of coil springs.

According to certain exemplary embodiments of the slider switch, each of said two pins closest to the contact sheet can be further provided with an additional contact part respectively. Each of said additional contact parts could be connected with one end of the adjacent pin and extend in a direction parallel to the contact sheet. The contact sheet could be pressed against the additional contact parts to form an electric connection between the contact sheet and said two pins closest to the contact sheet.

According to certain exemplary embodiments of the slider switch, the first elastic element can be a pair of coil springs.

Certain exemplary embodiments can provide a thermostat controller using the afore-mentioned slider switch. In the slider switch of the certain exemplary embodiments, the contact sheet can be subject to the elastic force of the first elastic element and the pressure from the slider. When the contact elements on the slider are connected to a pair of pins closest to the contact sheet, the slider is pressed against the contact sheet, and the contact sheet is separate from two pins closest to the contact sheet, so that the fan is turned off. When the circuit is to be switched to other positions, the slider could be pushed by the operator, and the contact sheet could be connected to two pins closest to the contact sheet by the contact sheet with the action of the first elastic element. This way, the slider could be switched among different circuits in the glide direction when required, and the contact sheet would be kept in contact with two pins closest to the contact sheet. In this case, three circuits could be electrically connected without re-configuring the circuit.

In addition, the surface contact between the pins and the contact elements and/or the contact sheet could guarantee a stable and reliable contact in the slider switch as well as reduce the contact resistance among the contacts.

By virtue of the slider switch of the certain exemplary embodiments, a push rod is further provided on the end face of the slider opposite to the contact sheet. The contact between the slider and the contact sheet could be achieved by said push rod, in which case the volume and weight of the slider would be reduced, the cost would be decreased, and the switch could be conveniently operated.

In another aspect of the certain exemplary embodiments, the slider switch of the invention is employed in the thermostat controller, and two conventional slider switches used in the existing thermostat controller could be substituted with one slider switch of the invention. Therefore, the production cost is efficiently reduced and the volume of the thermostat controller is decreased.

Further scope of applicability of the certain exemplary embodiments will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from the detailed description given herein below for illustration only, and thus are not limitative of the present invention, and wherein:

FIG.1 is a structural diagram of a slider switch according to one embodiment of the invention;

FIG.2 is a diagram from the II direction of fig. l, in which the slider switch is in a work position;

FIG.3 is a diagram of the slider switch in a glide position;

FIG.4 is a diagram of the slider switch in another work position; and

FIG.5 is a diagram of the slider switch according to another embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

Certain exemplary embodiments will be described in detail below with reference to the drawings, where like reference numerals indicate identical or functionally similar elements. Hereinafter, "a/an" not only indicates the case of "only one" but also indicates the case of "more than one". Herein, "contact" not only indicates the case of "direct contact" but also indicates the case of "indirect contact".

Fig. l is a structural diagram of a slider switch according to one exemplary embodiment. As shown in fig. l, the slider switch includes a base 30, a slider 10 set in the base 30, and several pins 20 (only 5 pins are illustratively depicted in fig. l) arranged in two rows (as shown in fig.2). The slider 10 could glide in the glide direction G defined by said two rows of pins 20. Fig.2 is a diagram from the II direction of fig. l, which illustratively describes the structure of the slider switch. As shown in fig.2, the slider 10 has a contact element 12 on each of the sides opposite to the pins 20. Each said contact element 12 could electrically connect a pair of neighboring pins 20 in the same row. A first elastic element 34 and a contact sheet 32 are further provided in the base 30, which are positioned along the glide direction G as shown. One end of the first elastic element 34 is connected with the base 30, and the other end thereof is connected with the contact sheet 32. One end of the slider 10 adjacent to the contact sheet 32 could be pressed against the contact sheet from a direction opposite to the first elastic element 34. When the contact element 12 is in contact with a pair of neighboring pins 20 closest to the contact sheet 32, the contact sheet 32 is separate from two pins 20 closest to the contact sheet 32 via the pressure from the slider 10. In this case, for example, the fan is turned off.

When the circuit is to be switched, the operator could push the slider 10 along the glide direction G in fig.2. While the slider 10 is in the glide position as shown in fig.3, one end of the slider 10 facing the contact sheet 32 is kept in contact with the contact sheet 32, the contact elements 12 of the slider 10 are merely contacted with the pins 20c and 20d, and the contact sheet 32 is in contact with the pins 20a and 20b driven by the first elastic element 34.

Where the operator further pushes the slider 10 to another work position shown in fig.4 along the glide direction G, two contact elements 12 are in contact with the pins 20c and 20e as well as the pins 20d and 20f respectively, the contact sheet 32 is separate from the slider 10, and the contact sheet 32 is pressed against the pins 20a and 20b by the first elastic element 34. In this situation, the contact sheet 32 would be kept pressing against the pins 20a and 20b even if the slider 10 is further pushed to contact with different pins.

Fig.4 illustrates one work position of the slider switch. Those skilled in the art would understand the operation process of the slider gliding along another direction, which is thus not described herein for brevity. Fig.5 is a diagram of a slider switch according to another embodiment of the invention, in which the internal structure of slider 10 is illustratively described. In this figure, the contact elements 12 have a planar end surface opposite to the pins in the direction vertical to the glide direction G. A second elastic element 13 is further provided between the contact elements 12 and the slider 10. The contact elements 12 are pressed against the pins by the second elastic element 13. The second elastic element 13 could be a spring, a plate spring or a leaf spring. In particular, the second elastic element 13 is implemented to be a pair of coil springs in fig.5.

The pins 20a and 20c could be further provided with an additional contact part 22 respectively. Each said additional contact part 22 is connected with one end of each of the pins 20a and 20c, and extends in a direction parallel to the contact sheet 32. The contact sheet 32 could be pressed against the additional contact parts 22 to form an electric connection between the contact sheet 32 and the pins 20a and 20b.

Furthermore, the first elastic element 34 interacting with the contact sheet 32 could be a spring, a plate spring or a leaf spring. In particular, the first elastic element 34 is implemented to be a pair of coil springs in fig.5.

The slider 10 is provided with a push rod 14, via which the slider is contacted with the contact sheet.

It is apparent those skilled in the art could understand the contact element and the contact sheet are conductors in the afore-mentioned embodiments. Two rows of pins with 5 pins in each row are illustrated in the figures. However, the slider switch of the invention could also be used where there are more than two rows of pins with more than three pins in each row. In the situation where the pins are arranged in more than two rows along the glide direction, the number of the sliders would be increased. The additional contact parts are provided for improving the contact between the pins 20 and the contact sheet 32 to increase the contact surface, which could be substituted with other means having functions similar to those of the additional contact parts.

According to the slider switch of the certain exemplary embodiments, the contact sheet and the first elastic element connecting the base and the contact sheet are introduced, so that the contact sheet could be separate from and in contact with two pins closest to the contact sheet by bringing the slider away from and in contact with the contact sheet, and the contact sheet could be thus electrically connected to or detached from said two pins closest to the contact sheet. Therefore, the fan could be turned on and off. Three circuits could be connected by contacting the contact elements of the slider with other two pairs of pins other than two pins closest to the contact sheet. The speed of the fan, for example, could be adjusted by moving the slider to switch different connecting circuits.

Where the slider switch of the certain exemplary embodiment is used for the existing thermostat controllers, the conventional two slide devices for turning the fan on and off and adjusting the fan speed respectively could be combined together, in which case the production cost is reduced and the volume of the thermostat controller is decreased.

By using the slider switch of the certain exemplary embodiment when two rows of pins with m (m>3) pins in each row are arranged on the glide direction of the slider switch, m-1 control phases could be switched and three circuits could be connected. In other words, where n (n>2) rows of pins with m (m>3) pins in each row are arranged in the glide direction of the slider switch, at least m-1 control phases could be switched and at least n+1 circuits could be connected.

According to the slider switch of the certain exemplary embodiment, the contact element is connected to the pins via a surface contact instead of the point contact between the slider and the contact points in the prior art. Therefore, the contact resistance is efficiently reduced. In addition, a second elastic element is provided between the slider and the contact element to efficiently enhance the contact strength of the contact element and the pins, and the contact resistance is thereby reduced.

According to the slider switch of the certain exemplary embodiment, the slider is in contact with the contact sheet through a push rod, in which case the volume of the slider is reduced and the cost is decreased. The contact strength of the contact sheet and two pins closest to the contact sheet is improved by providing additional contact parts on two pins closest to the contact sheet and providing a first elastic element between the contact sheet and the base, and the contact resistance is thereby reduced.

Those skilled in the art should understand the slider switch could be used for occasions requiring switch and connection among multiple circuits, for example, lighting control, heating control and display control.

It should be understood though the invention is described referring to different embodiments, each embodiment does not merely contain one independent technical solution. In other words, the specification is described in such a way that those skilled in the art should read and comprehend the specification as a whole. The technical solutions mentioned in these embodiments could be appropriately combined to form other embodiments understandable by those skilled in the art.

The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to those skilled in the art are intended to be included within the scope of the attached claims.

LIST OF REFERENCE NUMERALS slider

contact element

second elastic element

push rod

0a, 20b, 20c, 20d, 20e, 20f pin

additional contact part

base

contact sheet

first elastic element