Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HOUSING UNIT FOR AUTOMOBILE PARTS
Document Type and Number:
WIPO Patent Application WO/2019/206501
Kind Code:
A1
Abstract:
The present invention relates to a housing unit for automobile parts. The housing unit for automobile parts comprises a housing body (100), which accommodates automobile parts, and brackets (200), which are formed on said housing body and are provided with a bonding slot (220) where a bonding component can be inserted. A stress dispersing structure (230) is formed along the weld line formed adjacent to said bonding slot.

Inventors:
PARK, HongSeok (102-1102, 35 Iseopdaecheon-ro 1419beon-gil,Icheon-si, Gyeonggi-do, 17347, KR)
KWAK, HyungTaek (64 Songpa-daero 49-gil, Songpa-gu, Seoul, 05612, KR)
Application Number:
EP2019/055388
Publication Date:
October 31, 2019
Filing Date:
March 05, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CONTINENTAL AUTOMOTIVE GMBH (Vahrenwalder Straße 9, Hannover, 30165, DE)
International Classes:
F16B5/06; F16B5/02; H05K5/00
Domestic Patent References:
WO1999059799A11999-11-25
Foreign References:
JP2017115950A2017-06-29
JPH0547509U1993-06-25
CN204037427U2014-12-24
KR19980031364U1998-08-17
Attorney, Agent or Firm:
LEE, Daniel (Continental Teves AG & Co. OHG, Guerickestr. 7, Frankfurt am Main, 60488, DE)
Download PDF:
Claims:
Patent claims

1. A housing unit for automobile parts, wherein it comprises the following structures: a housing body, which accommodates automobile parts, and

brackets, which are formed on said housing body and are provided with a bonding slot where a bonding component can be inserted,

and a stress dispersing structure is formed along the weld line formed adjacent to said bonding slot.

2. The housing unit for automobile parts as claimed in claim 1 , wherein

said stress dispersing structure is embedded from the top of said bracket.

3. The housing unit for automobile parts as claimed in claim 2, wherein

said stress dispersing structure is embedded in the form of a rectangle and said rectangle comprises a length portion extended from said bonding slot in the direction of the outer side of said housing body and a width portion extended in a direction orthogonal to said length portion.

4. The housing unit for automobile parts as claimed in claim 3, wherein

the size of the width portion of said stress dispersing structure is smaller than the diameter of said bonding slot.

5. The housing unit for automobile parts as claimed in claim 3, wherein

the size of the length portion of said stress dispersing structure is larger than the diameter of said bonding slot.

6. The housing unit for automobile parts as claimed in any of claims 1 to 5, wherein

an annular stress dispersing extension portion is formed on the edge of said bonding slot and is embedded to a thickness the same as that to which said stress dispersing structure is embedded.

Description:
Description

Title of the invention Housing unit for automobile parts Technical field

The present invention relates to a housing unit for automobile parts. In particular, a stress dispersing structure is formed on the less rigid portion of the brackets provided to assemble bolts on the housing unit for automobile parts so that a crack can be prevented during mounting.

Background art

Usually, various control devices and parts for automobiles are mainly

accommodated in a plastic housing unit before they are mounted onto automobiles. The body accommodating automobile parts and the brackets equipped for the body of the housing unit are integrated through plastic injection, and a bonding slot where the bolts required for automobile assembly can be inserted is formed in the brackets.

Since the housing unit is formed through plastic injection, a weld line is formed near the bonding slot in the brackets and the weld line will become a less rigid portion on the injection molded body.

Thus, if a great external force is locally applied when a bonding component is bonded into the bonding slot in the brackets, cracks may be produced along the less rigid weld line.

To prevent such cracks, a reinforcing metal ring is usually placed in the bonding slot. However, if the reinforcing metal ring is used, a manufacturing process is separately required. Thus, the manufacturing difficulty of the product is increased. In addition, not only the product weight but also the manufacturing cost is increased.

The background art of the present invention has been described in Korean Patent Gazette No. 1998-031364 (published July 25, 1998 and titled "Reinforcing structure for the attached brackets of a clutch shock absorber). Disclosure of the invention

Technical problem

The present invention is presented to overcome the above-mentioned problem. The objective of the present invention is to provide a housing unit for automobile parts. That is to say, a stress dispersing structure is formed on the less rigid portion of the brackets provided to assemble bolts on the housing unit for automobile parts so that a crack can be prevented during mounting.

Technical solution

The housing unit for automobile parts in the present invention comprises: a housing body, which accommodates automobile parts, and brackets, which are formed on the housing body and are provided with a bonding slot where a bonding component can be inserted. A stress dispersing structure is formed along the weld line formed adjacent to the bonding slot. Further, the stress dispersing structure is embedded from the top of the bracket.

Further, the stress dispersing structure is embedded in the form of a rectangle and the rectangle comprises a length portion extended from said bonding slot in the direction of the outer side of the housing body and a width portion extended in a direction orthogonal to the length portion.

Further, the size of the width portion of the stress dispersing structure is smaller than the diameter of the bonding slot. Further, the size of the length portion of the stress dispersing structure is larger than the diameter of the bonding slot.

Further, an annular stress dispersing extension portion is formed on the edge of the bonding slot and is embedded to a thickness the same as that to which the stress dispersing structure is embedded.

Advantageous effects A stress dispersing structure is formed on the less rigid portion of the brackets provided to assemble bolts on the housing unit for automobile parts so that a crack can be prevented during mounting.

In addition, since no separate reinforcing ring is required, the manufacturing process is simplified, the manufacturing difficulty of the product is lowered, the product weight is reduced, and manufacturing costs are saved.

Brief description of the drawings

Fig. 1 shows the housing unit for automobile parts in an embodiment of the present invention.

Fig. 2 shows the brackets on the housing unit for automobile parts in an embodiment of the present invention.

Fig. 3 shows the result of the finite element method simulation of the brackets on the housing unit for automobile parts in an embodiment of the present invention.

Fig. 4 shows the result of the finite element method simulation of the cross-section in the A-A' direction in Fig. 3.

Fig. 5 shows the weld line of the brackets on a traditional housing unit for automobile parts.

Fig. 6 shows the result of the finite element method simulation of the brackets on a traditional housing unit for automobile parts.

Fig. 7 shows the result of the finite element method simulation of the cross-section in the B-B' direction in Fig. 6.

Mode of implementation of the invention

The following describes the embodiments of the housing unit for automobile parts in the present invention with reference to the drawings. In this process, the thickness of lines or the size of the components shown in the drawings may be exaggerated for the clarity and ease of understanding of the description. In addition, the following terms are defined in consideration of the functions of the present invention, which may vary depending on the intention or practice of a user or an operator. Therefore, the definition of these terms should be based on the content throughout this specification.

Fig. 1 shows the housing unit for automobile parts in an embodiment of the present invention, Fig. 2 shows the brackets on the housing unit for automobile parts in an embodiment of the present invention, Fig. 3 shows the result of the finite element method simulation of the brackets on the housing unit for automobile parts in an embodiment of the present invention, Fig. 4 shows the result of the finite element method simulation of the cross-section in the A-A' direction in Fig. 3, Fig. 5 shows the weld line of the brackets on a traditional housing unit for automobile parts, Fig. 6 shows the result of the finite element method simulation of the brackets on a traditional housing unit for automobile parts, and Fig. 7 shows the result of the finite element method simulation of the cross-section in the B-B' direction in Fig. 6.

As shown in Figs. 1 and 2, the housing unit for automobile parts in an embodiment of the present invention comprises a housing body 100 and brackets 200.

The housing body 100 can accommodate various control devices and parts for automobiles. As shown in Fig. 1 , the housing body, roughly is the shape of a rectangular parallelepiped, comprises a first side portion 1 10 having a width portion, a second side portion 120 formed in a position opposite to the first side portion 1 10, a third side portion 130 having a length portion, a fourth side portion 140 formed in a position opposite to the third side portion 130, a top portion 150, and a bottom portion 160.

A first connector portion 170 and a second connector portion 180 separated a certain distance from the first connector portion 170 are formed on the top portion 150 of the housing body 100.

A bracket 200 to be mounted onto an automobile is formed on the first side portion 1 10, the second side portion 120, and the third side portion 130, respectively, and the brackets 200 can be integrated with the housing body 100 through injection molding.

A bracket 200 can also be formed on the fourth side portion 140 of the housing main body 100. However, no bracket is formed here for the purpose of simplifying the manufacturing process and reducing the weight. As shown in Fig. 2, the bracket 200 comprises a body portion 210 in which a bonding slot 220 is formed to insert a bonding component (not shown) such as a bolt, and a stress dispersing structure 230 which is formed along the weld line W formed adjacent to said bonding slot 220 and can prevent a crack on the less rigid weld line W when bonded by use of a bonding component.

The body portion 210 of the bracket 200 comprises a top portion 21 1 , a side portion 212 and a bottom portion 213. The bottom portion 213 of the body portion 210 is located on the same plane where the bottom portion 160 of the housing body 100 is located, and a center connecting piece 214 and a pair of side connecting pieces 215 are formed on the top portion 21 1 of the body portion 210 to firmly bond the body portion 210 and the housing body 100 into a body. The stress dispersing structure 230 is embedded from the top portion 21 1 of the body portion 210 of the bracket 200. In particular the stress dispersing structure is embedded to a certain thickness T in the form of a rectangle and the rectangle comprises a length portion extended from the bonding slot 220 in the direction of the outer side of the housing body 100, and a width portion extended in a direction orthogonal to the length portion.

When connected to a bonding component, the bracket 200 will be deformed to some extent. Therefore, in consideration of the degree of deformation of the bracket 200, the stress dispersing structure 230 should be embedded to a thickness T of at least 0.5 mm to achieve the full effect.

Preferably, the width portion of the stress dispersing structure 230 is so formed that it has a length L1 shorter than the diameter D of the bonding slot 220. When the length L1 of the width portion is greater than or equal to the diameter D of the bonding slot 220, the boundary portion on the two sides will be far away from the weld line W and the stress dispersion effect will be reduced.

Further, the length portion of the stress dispersing structure 230 is preferably so formed that it has a length L2 longer than the diameter D of the bonding slot 220. When the length L2 of the length portion is less than or equal to the diameter D of the bonding slot 220, the length portion cannot fully cover the weld line W and the stress dispersion effect will be reduced. Further, the length L2 of the length portion is valid only when it is equal to the length of the weld line W and the length should be at least greater than that of the bonding portion (for example, the head of a bolt) of the bonding component.

Further, an annular stress dispersing extension portion 240 can be formed on the edge portion of the bonding slot 220 and is embedded to a thickness T the same as that to which the stress dispersing structure 230 is embedded.

When an excessive torque is exerted through a bonding component, the annular stress dispersing extension portion 240 radially disperses the stress along the edge portion of the bonding slot 220. Since the thickness T of the stress dispersing extension portion is the same as that of the stress dispersing structure 230 and the stress dispersing extension portion is connected to the stress dispersing structure 230, the stress which has not been dispersed on the stress dispersing structure 230 can further be dispersed when an excessive torque is exerted through the bonding component.

The following compares the result of the finite element method simulation of the brackets on the housing unit for automobile parts in the present invention with the result of the finite element method simulation of traditional brackets. See Figs. 3 to 7.

Fig. 3 shows the result of the finite element method simulation of the brackets on the housing unit for automobile parts in an embodiment of the present invention, and Fig. 4 shows the result of the finite element method simulation of the cross-section in the A-A' direction in Fig. 3.

As shown in Figs. 3 and 4, it can be confirmed that even if a torque is exerted through the bonding component, no stress concentration occurs on the surface of the region R1 of the stress dispersing structure 230. This means that the stress dispersing structure can prohibit the occurrence of cracks.

Fig. 5 shows the weld line W and bonding slot H of the brackets 10 on a traditional housing unit for automobile parts, Fig. 6 shows the result of the finite element method simulation of the brackets 10 on a traditional housing unit for automobile parts, and Fig. 7 shows the result of the finite element method simulation of the cross-section in the B-B' direction in Fig. 6. As shown in Figs. 6 and 7, for the brackets 10 on a traditional housing unit for automobile parts, it can be confirmed that when an excessive torque is exerted through a bonding component, a stress concentration occurs on the surface of the region R2 of the formed weld line W, and especially a maximum stress

concentration point P exists around the arrow A shown in Fig. 7. Such a maximum stress concentration point P becomes the starting point of a crack under the action of the compressive stress of a rotating bonding component and a rotating shear stress. As mentioned above, according to the present invention, a stress dispersing structure is formed on the less rigid portion of the brackets provided to assemble bolts so that a crack can be prevented during mounting.

In addition, since no separate reinforcing ring is required, the manufacturing process is simplified, the manufacturing difficulty of the product is lowered, the product weight is reduced, and manufacturing costs are saved.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary. It will be understood by those skilled in the art that various modifications and equivalent embodiments thereto may be implemented. Accordingly, the true technical protection scope of the present invention should be determined by the following claims. [Description of the Reference Numerals or Symbols]

100: Housing body 1 10: First side portion

120: Second side portion 130: Third side portion

140: Fourth side portion 150: Top portion

160: Bottom portion 200: Bracket

210: Body portion 220: Bonding slot

230: Stress dispersing structure 240: Stress dispersing extension portion

W: Weld line P: Maximum stress concentration point