Assembly structure of circuit board

Abstract

The utility model belongs to the field of automobile accessories, and discloses a circuit board assembling structure which comprises a lamp holder, a circuit board arranged in the lamp holder and a lamp cover connected with the lamp holder and packaging the circuit board in the lamp holder, the lamp holder is matched with the lamp cover in a clamping mode, and the lamp holder is provided with an installation cavity used for installing the circuit board. A limiting structure matched with the circuit board in a limiting mode is arranged in the installation cavity, and an elastic pressing structure abutting against the circuit board is arranged on the lamp cover. According to the utility model, the elastic compression structure is used for compression joint, and the existence of elastic deformation reasonably avoids tolerance clearances generated by manufacturing and assembling, so that the problem of abnormal sound of products is improved, and the yield of the products is improved.

Description

Technical Field

[0001] The utility model relates to the field of auto parts, in particular to an assembly structure of a circuit board. Background Art

[0002] Circuit boards are often used in the manufacturing of automotive lamps. Conventional circuit board assembly methods primarily rely on hot riveting, screwing, and clamping, leading to issues such as difficulty in repair and replacement, high component costs, and the risk of vibration and noise. This utility model proposes a novel circuit board assembly structure that significantly reduces production costs, improves production efficiency, and resolves the issues of noise and difficulty in repair and replacement. Utility Model Content

[0003] The purpose of the present invention is to provide a method for solving the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A circuit board assembly structure includes a lamp holder, a circuit board arranged in the lamp holder, and a lamp cover connected to the lamp holder and encapsulating the circuit board in the lamp holder. The lamp holder and the lamp cover are snap-fitted together. The lamp holder has a mounting cavity for mounting the circuit board. A limiting structure that cooperates with the circuit board is provided in the mounting cavity. An elastic pressing structure that abuts against the circuit board is provided on the lamp cover.

[0006] Furthermore, one of the lamp holder and the lamp cover is provided with a plurality of clamping pins, and the other is provided with a plurality of clamping slots corresponding to the clamping pins one by one.

[0007] Furthermore, the clamping foot is arranged on the lamp cover, and the clamping mouth is arranged on the lamp holder.

[0008] Furthermore, the left and right sides and the front end of the lamp cover are provided with clamping feet, and the left and right sides and the front end of the lamp holder are provided with bayonet holes.

[0009] Furthermore, the limiting structure includes supporting ribs, the front of the circuit board is against multiple supporting ribs, and the back of the circuit board is against the elastic pressing structure of the lamp cover. The supporting ribs and the elastic pressing structure limit the circuit board in the upper and lower directions.

[0010] Furthermore, the limiting structure includes side limiting ribs, which abut against the sides of the circuit board and limit the circuit board in the left-right direction.

[0011] Furthermore, the limiting structure includes end limiting ribs, the end limiting ribs abut against the front end or the rear end of the circuit board, and the end limiting ribs limit the circuit board in the front-to-back direction.

[0012] Furthermore, a pressing protrusion is provided on the lamp cover, and the pressing protrusion is used to press the back side of the circuit board.

[0013] Furthermore, the elastic pressing structure is a raised spring piece.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1) The elastic compression structure is used for crimping. The existence of elastic deformation can reasonably avoid the tolerance gap generated by manufacturing and assembly, thereby improving the problem of abnormal noise in the product and improving the product yield;

[0016] 2) Assembly and fixation are achieved by the cooperation between the bayonet and the foot. Compared with the traditional hot riveting method, it is easier to disassemble and repair. The circuit board can be replaced without damaging the product, saving customers' subsequent repair costs.

[0017] 3) The combination of the bayonet and the foot saves corresponding tooling, improves production speed, and enhances product competitiveness compared to traditional hot riveting and screw connection methods;

[0018] 4) Traditional hot riveting and screwing methods can damage circuit boards and components. For example, high temperatures can burn components after hot riveting, and wiring inside circuit boards can be broken after screwing. Relying on an elastic clamping structure for crimping can effectively solve these problems and improve product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the utility model.

[0020] Figure 2 This is a schematic diagram of the decomposition structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0022] Figure 4 This is a schematic diagram of the lamp cover structure of the present utility model.

[0023] Figure 5 This is a schematic diagram of the lamp holder structure in the utility model.

[0024] In the figure: lamp cover 10, crimping protrusion 11, clamping foot 12, protruding spring piece 13, end protrusion 14, circuit board 20, lamp holder 30, supporting rib 31, side limiting rib 32, end limiting rib 33, bayonet 34. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 5 A circuit board assembly structure includes a lamp holder 30, a circuit board 20 arranged in the lamp holder 30, and a lamp cover 10 connected to the lamp holder 30 and encapsulating the circuit board 20 in the lamp holder 30. The lamp holder 30 and the lamp cover 10 are snap-fitted together. The lamp holder 30 has a mounting cavity for mounting the circuit board 20. A limiting structure that cooperates with the circuit board 20 is provided in the mounting cavity. An elastic pressing structure that abuts against the circuit board 20 is provided on the lamp cover 10.

[0027] Furthermore, the lamp cover 10 and the lamp holder 30 are both made of plastic, and the elastic pressing structure is a protruding spring piece 13 . The properties of plastic are utilized to make the protruding spring piece 13 elastic.

[0028] Continue reading Figure 3-Figure 5 In one embodiment of the present invention, the front end and the left and right sides of the rear of the lamp cover 10 are provided with clamping feet 12, and the front end and the left and right sides of the rear of the lamp holder 30 are provided with bayonet holes 34, and the clamping feet and the bayonet holes 34 are connected in a one-to-one correspondence.

[0029] The positions and numbers of the above-mentioned clamping feet 12 and the clamping holes 34 can be adjusted as needed.

[0030] In another embodiment of the present invention, the foot 12 may be disposed on the lamp holder 30 , and the socket 34 may be disposed on the lamp cover 10 .

[0031] Continue reading Figure 3 and Figure 5In one embodiment of the present invention, the limiting structure on the lamp holder 30 includes support ribs 31, side limiting ribs 32, and end limiting ribs 33. There are multiple support ribs 31, which are respectively provided on the left and right inner walls of the mounting cavity of the lamp holder 30. The tops of all support ribs 31 are flush. The front of the circuit board 20 abuts against the support ribs 31 at multiple different positions, while the back of the circuit board 20 abuts against the elastic pressing structure of the lamp cover 10, thereby limiting the up and down movement of the circuit board 20. There are also multiple side limiting ribs 32, which are also respectively provided on the left and right inner walls of the mounting cavity of the lamp holder 30. The tops of the side limiting ribs 32 have arc surfaces for guiding the insertion of the circuit board 20. After the circuit board 20 is inserted into the mounting cavity of the lamp holder 30, its left and right sides respectively abut against the corresponding side limiting ribs 32, thereby limiting the left and right movement of the circuit board 20. There are two end limit ribs 33, which are respectively arranged at the rear ends of the left and right inner walls of the mounting cavity of the lamp holder 30. Compared with the side limit ribs 32, the end limit ribs 33 protrude further toward the inside of the mounting cavity. When the circuit board 20 is inserted into the mounting cavity, its front end abuts against the front inner wall of the mounting cavity, and its rear end abuts against the two end limit ribs 33, thereby limiting the movement of the circuit board 20 in the front and rear directions.

[0032] The number, shape and position of the supporting ribs 31 , the side limiting ribs 32 and the end limiting ribs 33 can be adjusted as needed.

[0033] Continue reading Figure 3 and Figure 4 In one embodiment of the present invention, the left and right sides of the front end of the lamp cover 10 are respectively provided with upwardly protruding pressing protrusions 11, and the pressing protrusions 11 are used to press the back side of the circuit board 20.

[0034] The present invention is implemented as follows: the circuit board 20 is placed on the support ribs 31 of the lamp holder 20, and the side limiting ribs 32 and end limiting ribs 33 are used to limit the front, back, left, and right movement of the circuit board 20. The lamp cover 10 is pressed down, and the crimping protrusions 11 and the raised spring pieces 13 contact the outer surface of the circuit board 20. The circuit board 20 is then clamped together by the engagement of multiple clips 12 and the bayonet 34, limiting its vertical movement. During this process, the raised spring pieces 13 and the circuit board 20 form an interference fit. The elastic deformation of the raised spring pieces 13 ensures that the circuit board 20 and the lamp holder 30 are completely in contact, avoiding the abnormal noise caused by the assembly gap of the traditional clip connection method, while retaining the advantage of the traditional clip connection method that is easy to disassemble.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board assembly structure, comprising a lamp holder (30), a circuit board (20) disposed in the lamp holder (30), and a lamp cover (10) connected to the lamp holder (30) and encapsulating the circuit board (20) in the lamp holder (30), characterized in that: The lamp holder (30) is engaged with the lamp cover (10), the lamp holder (30) has a mounting cavity for mounting a circuit board (20), a limiting structure for engaging with the circuit board (20) is provided in the mounting cavity, and an elastic pressing structure for abutting against the circuit board (20) is provided on the lamp cover (10).

2. The circuit board assembly structure according to claim 1, characterized in that: One of the lamp holder (30) and the lamp cover (10) is provided with a plurality of clamping pins (12), and the other is provided with a plurality of clamping openings (34) corresponding to the clamping pins (12) in a one-to-one manner.

3. The circuit board assembly structure according to claim 2, wherein: The clamping foot (12) is arranged on the lamp cover (10), and the clamping opening (34) is arranged on the lamp holder (30).

4. The circuit board assembly structure according to claim 3, characterized in that: The left and right sides and the front end of the lamp cover (10) are both provided with clamping feet (12), and the left and right sides and the front end of the lamp holder (30) are both provided with bayonet holes (34).

5. The circuit board assembly structure according to claim 1, wherein: The limiting structure comprises supporting ribs (31), the front of the circuit board (20) abuts against the plurality of supporting ribs (31), and the back of the circuit board (20) abuts against the elastic pressing structure of the lamp cover (10), and the supporting ribs (31) and the elastic pressing structure limit the circuit board (20) in the upper and lower directions.

6. The circuit board assembly structure according to claim 1, characterized in that: The limiting structure comprises side limiting ribs (32), the side limiting ribs (32) abutting against the side of the circuit board (20), and the side limiting ribs (32) limit the circuit board (20) in the left-right direction.

7. The circuit board assembly structure according to claim 1, characterized in that: The limiting structure comprises an end limiting rib (33), the end limiting rib (33) abutting against the front end or the rear end of the circuit board (20), and the end limiting rib (33) limits the circuit board (20) in the front-to-back direction.

8. The circuit board assembly structure according to claim 1, characterized in that: A pressing protrusion (11) is provided on the lamp cover (10), and the pressing protrusion (11) is used to press the back side of the circuit board (20).

9. The circuit board assembly structure according to claim 1, characterized in that: The elastic pressing structure is a raised spring sheet (13).

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