Anti-loosening structure for assembly of control module
By adopting the technology of combining clamping connection and wedge-tight pins in the control module, the problems of unstable connection and failure of EMC experiments in the prior art are solved, and more stable connections and lower costs are achieved.
Patent Information
- Application Number
- CN202420899852.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The control modules of existing electrical components have problems in connection strength and EMC experiments, resulting in connection instability and increased cost.
A control module is used to assemble the anti-loosening structure, which is connected by the mounting body and the fixing block, and uses the combination of the wedge tight pin and the connecting rib block to improve the stability of the clamping fit state.
The stable connection of the control module is achieved, operation is simplified, material requirements are reduced, and negative impact on EMC experiments is reduced.
Smart Images
Figure CN222531955U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of electrical components, and in particular to a control module assembly anti-loosening structure. Background Art
[0002] The control module of the electrical component usually includes a PCBA module (printed circuit board) and a housing. The housing includes an upper housing and a lower housing. The PCBA module is placed in the space formed between the upper housing and the lower housing, and then the upper housing and the lower housing are connected and fixed.
[0003] In the related art, the upper shell and the lower shell are usually connected by metal screws. Under the premise of meeting the connection strength requirements, it is easy to cause the control module to fail the EMC test, and also cause an increase in the cost of parts in the production process. Utility Model Content
[0004] In order to improve the above-mentioned problem, the present application provides a control module assembly anti-loosening structure.
[0005] The present application provides a control module assembly anti-loosening structure adopts the following technical solution:
[0006] A control module assembly anti-loosening structure includes a first shell and a second shell, an installation space is formed between the first shell and the second shell, and also includes an installation mechanism, the installation mechanism includes a mounting body and a fixed block, the mounting body is fixedly connected to the first shell, the fixed block is fixedly connected to the second shell, the mounting body is elastically deformed relative to the first shell, and the mounting body and the fixed block are clamped; the mounting body includes a plurality of mounting petals, the plurality of mounting petals are arranged in a ring array, a deformation hole is formed between the plurality of mounting petals, and a deformation gap is formed between two adjacent mounting petals, a clamping block is fixedly connected to a side of the mounting petal away from the deformation hole, a clamping hole is provided on the fixed block, each of the mounting petals passes through the clamping hole, and a side of the mounting petal away from the deformation hole abuts against a hole wall of the clamping hole; the wedging pin is coaxial with the deformation hole, the side wall of the wedging pin contacts the hole wall of the deformation hole, and the side wall of the wedging pin is breakpoint-connected to the mounting body.
[0007] By adopting the above technical scheme, the first shell and the second shell are connected and fixed by snapping. When the first shell and the second shell are installed and abutted against each other, each mounting petal block of a single mounting body passes through the same snapping hole, and the side of the mounting petal block facing away from the deformation hole abuts against the hole wall of the snapping hole. The root of the mounting petal block and the snapping block are respectively located on the opposite sides of the fixed block. At this time, the mounting body cannot be easily withdrawn from the snapping hole. The operation is simple and the material requirements for the mounting body and the fixed block are not limited to metal materials, which reduces the negative impact of the connection structure on the EMC test of the control module. After the mounting block is inserted into the snapping hole, a thrust is applied to the wedging pin to break it from the mounting body, and the wedging pin is then inserted into the deformation hole formed by each mounting petal block to form a support abutment for each mounting petal block, thereby reducing the tendency of the mounting petal block to deform toward the deformation hole and improving the stability of the snap-fit state of the mounting body and the fixed block.
[0008] Preferably, a plurality of connecting rib blocks are fixedly connected on the mounting body at positions of the hole wall of the deformation hole away from the clamping block, and the connecting rib blocks are fixedly connected to the side walls of the wedging pin.
[0009] By adopting the above technical solution, the connecting rib blocks fix the wedging pin and the installation body, and the interval points between the connecting rib blocks serve as breaking points, providing conditions for applying force to break the connection points between the connecting rib blocks and the wedging pin.
[0010] Preferably, the number of the connecting ribs is consistent with the number of the deformation gaps, a single connecting rib and a deformation gap are located on the same element line of the deformation hole, a stop block is fixedly connected to the side wall of the wedging pin, and the stop block is located in the deformation gap and between two adjacent mounting petals.
[0011] Preferably, the fixing block and the second shell are integrally formed, and a triangular rib is integrally formed between the fixing block and the second shell.
[0012] By adopting the above technical solution, the triangular ribs are used to improve the connection strength between the fixing block and the second shell.
[0013] Preferably, a clamping protrusion is fixedly connected to the side wall of the wedging pin, and a clamping recess for the clamping protrusion to be inserted into is formed on the connecting rib block.
[0014] By adopting the above technical solution, after the clamping protrusion and the clamping depression cooperate with each other, the relative position of the wedging pin with respect to the connecting rib block cannot be easily changed.
[0015] Preferably, a mating groove is provided on the connecting rib block, one end of the mating groove is connected to the clamping recess, and the other end is located on the side of the connecting rib block away from the fixed block, the depth of the mating groove is less than the depth of the clamping recess, and the length direction of the mating groove is consistent with the axial direction of the wedging pin.
[0016] In summary, the present application includes at least one of the following beneficial technical effects:
[0017] 1. Through the arrangement of the mounting body and the fixing block being mutually clamped, the first housing and the second housing are connected and fixed by clamping, which is easy to operate and the material requirements for the mounting body and the fixing block are not limited to metal materials, thereby reducing the negative impact of the connection structure on the EMC test of the control module;
[0018] 2. Through the setting of the wedging pin, after the mounting block is inserted into the snap-in hole, the wedging pin is inserted into the deformation hole formed by each mounting petal block, forming a supporting abutment for each mounting petal block, reducing the tendency of the mounting petal block to deform in the direction of the deformation hole, and improving the stability of the snap-in fitting state of the mounting body and the fixed block. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural explosion diagram used to reflect the anti-loosening structure of the control module assembly in the first embodiment of the present application.
[0020] Figure 2 yes Figure 1 A partial enlarged view of part A in the middle.
[0021] Figure 3 It is a structural schematic diagram used to reflect the installation body in the first embodiment of the present application.
[0022] Figure 4 It is a schematic diagram of the structure after the first shell and the second shell are snap-connected in the first embodiment of the present application.
[0023] Figure 5 It is a schematic cross-sectional view of the structure used to illustrate the wedging latch after it is crushed in the installation body in the second embodiment of the present application.
[0024] Explanation of the reference numerals: 1. PCBA module; 11. first shell; 12. second shell; 2. mounting mechanism; 21. fixing block; 211. snap-in hole; 212. triangular rib; 22. mounting body; 221. mounting petal block; 222. snap-in block; 223. deformation gap; 224. deformation hole; 225. connecting rib block; 2251. clamping depression; 2252. matching slide groove; 23. wedging pin; 231. anti-rotation block; 232. clamping protrusion. DETAILED DESCRIPTION
[0025] The following is combined with Figure 1-5 This application is described in further detail.
[0026] Embodiment 1:
[0027] The present application embodiment discloses a control module assembly anti-loosening structure, such as Figure 1As shown, it includes a first housing 11 and a second housing 12, and an installation space for placing the PCBA module 1 is formed between the first housing 11 and the second housing 12. An installation mechanism 2 is arranged between the first housing 11 and the second housing 12, and the two are detachably connected by snapping.
[0028] like Figure 1-4 As shown, the mounting mechanism 2 includes a mounting body 22 and a fixing block 21, wherein the mounting body 22 is fixedly connected to the outside of the first shell 11, and the fixing block 21 is fixedly connected to the outside of the second shell 12. The mounting body 22 includes a plurality of mounting petals 221, which are arranged in a circular array, and a deformation hole 224 is formed between each mounting petal 221, and a deformation gap 223 is formed between two adjacent mounting petals 221. Each mounting petal 221 is a cantilever structure that can be elastically deformed relative to the first shell 11; in this embodiment, the number of mounting petals 221 is three, and a clamping block 222 is integrally formed on the side of each mounting petal 221 away from the deformation hole 224, and the clamping block 222 is located at the end of the mounting petal 221. A snap-in hole 211 is provided on the fixing block 21, and a single fixing block 21 corresponds to a mounting body 22. When the first shell 11 and the second shell 12 are mounted and abutted against each other, each mounting petal block 221 of the single mounting body 22 passes through the same snap-in hole 211, and the side of the mounting petal block 221 facing away from the deformation hole 224 abuts against the hole wall of the snap-in hole 211. The root of the mounting petal block 221 and the snap-in block 222 are respectively located on opposite sides of the fixing block 21. At this time, the mounting body 22 cannot be easily withdrawn from the snap-in hole 211.
[0029] like Figure 1 , 2As shown in Figures 4 and 5, the mounting body 22 and the first shell 11 are integrally formed, the fixing block 21 and the second shell 12 are integrally formed, and a triangular rib 212 is also integrally formed between the fixing block 21 and the second shell 12. The mounting mechanism 2 also includes a wedging pin 23, which is located in the deformation hole 224 and is coaxial with the deformation hole 224, and the side wall of the wedging pin 23 is in contact with the hole wall of the deformation hole 224. The wedging pin 23 and the mounting body 22 are connected in a breakpoint type: a plurality of connecting rib blocks 225 are fixedly connected on the mounting body 22 and at a position of the hole wall of the deformation hole 224 away from the clamping block 222, and the plurality of connecting rib blocks 225 are arranged in a circular array along the axis of the deformation hole 224, and the mounting body 22, the connecting rib blocks 225 and the wedging pin 23 are integrally formed. The connecting rib block 225 is relatively thin. When an axial thrust is applied to the wedging pin 23, the connection between the connecting rib block 225 and the wedging pin 23 will be sheared and broken, and the wedging pin 23 can move axially. Even after the connecting rib block 225 breaks, the connecting rib block 225 still has a large extrusion friction force on the wedging pin 23, so that the wedging pin 23 can be interference-fitted with the deformation hole 224. The number of connecting rib blocks 225 is consistent with the number of deformation gaps 223. A single connecting rib block 225 and a deformation gap 223 are located on the same element line of the deformation hole 224. A stop block 231 is fixedly connected to the side wall of the wedging pin 23. The stop block 231 is located in the deformation gap 223 and between two adjacent mounting petals 221, that is, the wedging pin 23 cannot be easily rotated. After the installation petal block 221 is inserted into the clamping hole 211 , the wedging pin 23 is crushed so that the portion of the installation petal block 221 passing through the fixing block 21 is not easily deformed, thereby improving the clamping stability.
[0030] Embodiment 2:
[0031] like Figure 5 As shown, on the basis of the above embodiment, a clamping protrusion 232 is fixedly connected to the side wall of the wedging pin 23, and a clamping recess 2251 for the clamping protrusion 232 to be inserted into is provided on the connecting rib block 225; a matching slide groove 2252 is provided on the connecting rib block 225, one end of the matching slide groove 2252 is connected to the clamping recess 2251, and the other end is located on the side of the connecting rib block 225 away from the fixed block 21, and the length direction of the matching slide groove 2252 is consistent with the axial direction of the wedging pin 23. The depth of the matching groove 2252 is smaller than the depth of the clamping recess 2251. In the process of crushing the wedging pin 23, the clamping protrusion 232 first passes through the matching groove 2252, leaves the matching groove 2252, and then enters the clamping recess 2251. When the clamping protrusion 232 enters the clamping recess 2251, the clamping protrusion 232 cannot be easily moved, and the position state of the wedging pin 23 is also more fixed.
[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A control module assembly anti-loosening structure, comprising a first housing (11) and a second housing (12), wherein an installation space is formed between the first housing (11) and the second housing (12), characterized in that: The device also comprises a mounting mechanism (2), the mounting mechanism (2) comprising a mounting body (22), a fixing block (21) and a wedging latch (23), the mounting body (22) being fixedly connected to the first housing (11), the fixing block (21) being fixedly connected to the second housing (12), the mounting body (22) being elastically deformable relative to the first housing (11), and the mounting body (22) and the fixing block (21) being snap-connected; The mounting body (22) comprises a plurality of mounting petals (221), the plurality of mounting petals (221) are arranged in a ring array, a deformation hole (224) is formed between the plurality of mounting petals (221), a deformation gap (223) is formed between two adjacent mounting petals (221), a clamping block (222) is fixedly connected to a side of the mounting petal (221) away from the deformation hole (224), a clamping hole (211) is provided on the fixed block (21), each of the mounting petals (221) passes through the clamping hole (211), and a side of the mounting petal (221) away from the deformation hole (224) abuts against a hole wall of the clamping hole (211); The wedging pin (23) is coaxial with the deformation hole (224), the side wall of the wedging pin (23) contacts the hole wall of the deformation hole (224), and the side wall of the wedging pin (23) is connected to the mounting body (22) in a breakpoint manner.
2. The control module assembly anti-loosening structure according to claim 1, characterized in that: A plurality of connection rib blocks (225) are fixedly connected on the mounting body (22) at a position of the hole wall of the deformation hole (224) away from the clamping block (222), and the connection rib blocks (225) are fixedly connected to the side wall of the wedging latch (23).
3. The control module assembly anti-loosening structure according to claim 2, characterized in that: The number of the connecting ribs (225) is consistent with the number of the deformation gaps (223); a single connecting rib (225) and a deformation gap (223) are located on the same element line of the deformation hole (224); a stop block (231) is fixedly connected to the side wall of the wedge locking pin (23); the stop block (231) is located in the deformation gap (223) and between two adjacent mounting petals (221).
4. A control module assembly anti-loosening structure according to any one of claims 1 to 3, characterized in that: The fixing block (21) and the second shell (12) are integrally formed, and a triangular rib (212) is integrally formed between the fixing block (21) and the second shell (12).
5. The control module assembly anti-loosening structure according to claim 3, characterized in that: A clamping protrusion (232) is fixedly connected to the side wall of the wedging latch pin (23), and a clamping recess (2251) for the clamping protrusion (232) to be inserted into is provided on the connecting rib block (225).
6. The control module assembly anti-loosening structure according to claim 5, characterized in that: The connecting rib block (225) is provided with a matching groove (2252), one end of the matching groove (2252) is connected to the clamping recess (2251), and the other end is located on the side of the connecting rib block (225) away from the fixed block (21), the depth of the matching groove (2252) is less than the depth of the clamping recess (2251), and the length direction of the matching groove (2252) is consistent with the axial direction of the wedging pin (23).