Circuit board anti-loose fixing device

Abstract

The utility model discloses an anti-loose fixing device for a circuit board, which comprises a first shell and a second shell, a limiting mechanism is arranged on the second shell to fix the circuit board, and the first shell and the second shell are connected through a built-in buckle, so that the fixing and anti-loose effects are achieved, a connecting structure is not exposed, and the attractiveness is ensured. And meanwhile, safety ribs are arranged in the device, so that a certain protection effect on the circuit board is achieved.

Description

Technical Field

[0001] This utility model relates to a fixing device, and more particularly to a circuit board anti-loosening fixing device. Background Technology

[0002] Traditional integrated boards have through holes, which can serve both as mounting points and as limiting points.

[0003] CN110165315A discloses a snap-fit ​​mounting structure for an integrated board BMS slave controller, used to fix the integrated board to a pressure plate. It includes two identical snap-fit ​​posts arranged opposite each other, with a gap between them. The bottom of each snap-fit ​​post is fixedly connected to the pressure plate, which has a boss and a movable groove. The bottom of the snap-fit ​​post is fixedly positioned within the movable groove. The top of each snap-fit ​​post has a protrusion whose diameter gradually increases from top to bottom. This snap-fit ​​mounting method avoids the electrical safety hazards caused by loose screws. The snap-fit ​​structure, along with the protrusion and boss, completely secures the integrated board BMS, preventing it from loosening and falling off, thus ensuring electrical safety.

[0004] However, the above-mentioned installation structure cannot be adapted to the through holes of different specifications on the integrated board, and its toughness is not high, resulting in a short service life. Utility Model Content

[0005] The purpose of this utility model is to design a new type of circuit board management system that can effectively fix circuit boards of different specifications and provide good protection for the circuit boards. Therefore, this application provides a circuit board anti-loosening fixing device.

[0006] A circuit board anti-loosening fixing device adopts the following technical solution:

[0007] A circuit board anti-loosening fixing device is used to fix a circuit board, including a first housing and a second housing disposed on the first housing. The first housing and the second housing cooperate to form a cavity. The second housing is provided with a plurality of limiting mechanisms for fixing the circuit board. The limiting mechanism includes a protrusion, a recess and a fixing part connected in sequence.

[0008] The limiting mechanism is located in the cavity formed by the first housing and the second housing, and the limiting mechanism is vertically arranged on the second housing.

[0009] Preferably, there are at least two limiting mechanisms, and they are preferably located at the four corners of the second housing.

[0010] Preferably, the protrusion has a deformable portion that deforms along the direction of mutual proximity.

[0011] Preferably, the recess is located on the side of the limiting mechanism that is far apart from each other, and there is at least one recess in one limiting mechanism.

[0012] Preferably, the top and bottom of the protrusion are both sloped surfaces.

[0013] By adopting the above technical solution, the limiting hole on the circuit board is pressed and engaged with the limiting mechanism on the second housing to achieve limiting and anti-loosening. The inclined surface at the bottom of the protrusion can effectively fix the installation position of the circuit board. At the same time, the circuit board is located in the cavity formed by the first housing and the second housing, thus realizing the protection function of the device for the circuit board.

[0014] Furthermore, a retaining edge is provided on the first surface of the second housing, and the retaining edge is disposed within the cavity formed by the cooperation of the first housing and the second housing.

[0015] By adopting the above technical solution, the contact between the flange and the inner wall of the first housing facilitates installation and can play a certain role in limiting the circuit board.

[0016] Furthermore, a snap fastener is provided at the end of the retaining edge.

[0017] Furthermore, a slot is provided on the inner sidewall of the first housing to engage with the snap-fit ​​of the second housing.

[0018] By adopting the above technical solution, the first shell and the second shell are connected by an internal snap-fit, which improves the aesthetics of the product.

[0019] Furthermore, a stop post is provided on the first surface of the second housing.

[0020] Furthermore, a top post is provided on the bottom wall of the first housing to cooperate with the abutment of the second housing.

[0021] By adopting the above technical solution, when the circuit board is installed in the device, the cooperation between the abutment and the top post ensures the fixation of the circuit board in this direction.

[0022] Furthermore, reinforcing ribs are provided on the first surface of the second housing.

[0023] Furthermore, a reinforcing rib is provided on the bottom wall of the first housing, and the reinforcing rib includes an end connected to the inner side wall of the first housing.

[0024] Preferably, the end is a triangular plate.

[0025] By adopting the above technical solution, the structural strength of the first shell and the second shell is significantly improved.

[0026] In summary, this application has at least one of the following beneficial effects:

[0027] 1. The inclined surface design of the limiting mechanism and the mutually cooperating abutting columns ensure the fixation of the circuit board in the horizontal, vertical and other directions, and the more streamlined structural design ensures easy disassembly of the circuit board.

[0028] 2. The reinforcing ribs and ends increase structural strength and ensure the housing's protective function for the circuit board;

[0029] 3. The recessed part inside the first housing and the buckle on the second housing are both located in the cavity formed by the cooperation of the first housing and the second housing. This concealed buckle structure increases the aesthetics. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the first shell in this utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the second shell in this utility model;

[0033] Figure 4 This is a detailed structural diagram of the second shell at point A in this utility model;

[0034] Figure 5 This is a schematic diagram of the circuit board structure in this utility model.

[0035] Reference numerals: 1 First housing; 11 First reinforcing rib; 111 End; 12 Top post; 13 Slot; 14 Circuit board external interface; 15 Recess; 16 First through hole; 2 Second housing; 21 Second reinforcing rib; 22 Abutment; 23 Side guard; 24 Buckle; 25 Limiting mechanism; 251 Protrusion; 252 Recess; 253 Fixing part; 26 Second through hole; 3 Circuit board; 31 Mounting hole. Detailed Implementation

[0036] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1

[0038] refer to Figure 1 This embodiment includes a first housing 1 and a second housing 2, which are fitted together to form a cavity for accommodating and protecting the circuit board 3.

[0039] Combination Figure 1 and Figure 2 The first housing 1 has a first reinforcing rib, a top post 12, a slot 13, and an external interface 14 for connecting the circuit board to the outside.

[0040] The first reinforcing ribs 11 are evenly distributed on the bottom wall of the first shell 1 in a crisscross pattern. Several connection points between the first reinforcing ribs 11 and the side wall of the first shell 1 are provided with end points 111. The end points 111 only need to have a height change in the distribution direction of the first reinforcing ribs. Here, a triangular plate is used as a preferred embodiment. Several top posts 12 are provided at the intersection of the horizontal and vertical distribution of the first reinforcing ribs 11.

[0041] The external interface 14 is located on any side wall of the first housing 1.

[0042] Several slots 13 are provided along the inner sidewall of the first housing 1.

[0043] The outer side of the first housing 1 has a recess 15, and the bottom of the recess has a first through hole 16.

[0044] Combination Figure 1 , 3 4. The top surface of the second shell 2 has a second reinforcing rib 21, a stop post 22, a limiting mechanism 25 and a retaining edge 23.

[0045] The second reinforcing ribs 21 are evenly distributed on the top surface of the second shell 2 in a crisscross pattern. At the intersection of the longitudinal and transverse distribution of the second reinforcing ribs 21, there are several abutments 22 that cooperate with the top posts 12 of the first shell 1. The outermost side of the second reinforcing ribs 21 is provided with at least two baffles 23, and the baffles 23 are provided with buckles 24 that cooperate with the slots 13 on the inner sidewall of the first shell 1.

[0046] The second housing 2 has a second through hole 26 at its edge.

[0047] Combination Figure 3 , 4 The limiting mechanism 25 is provided on the top surface of the second housing 2 and at least two are required. The limiting mechanism 25 includes at least one set of protrusions 251, recesses 252 and fixing parts 253 connected from top to bottom. The fixing part 253 is connected to the second housing 2. The limiting mechanism 25 can produce a certain degree of elastic deformation.

[0048] In a preferred embodiment, the limiting mechanism 25 is disposed at two opposite right angles of the second housing 2.

[0049] Combined again Figure 3 , 4 The fixing part 253 is at the same height as the abutment 22.

[0050] Combined again Figure 3 , 4 5. The circuit board 3 has a mounting hole 31 that can be locked with the recessed part 252 of the limiting mechanism 25;

[0051] When the first housing 1 and the second housing 2 are installed, there is an installation space with a thickness equal to that of the circuit board 3 between the top post 12 and the bottom post 22.

[0052] Combination Figure 1-4 Align the mounting hole 31 of the circuit board 3 with the limiting mechanism 25 of the second housing 2, and press the protrusion 251 on the limiting mechanism 25 inward; or align the mounting hole 31 of the circuit board 3 with the limiting mechanism 25 of the second housing 2 and press it down, so that the circuit board 3 and the recess 252 of the limiting mechanism 25 are locked together by the inclined edge at the bottom of the protrusion 251, and at the same time, the abutment 22 on the reinforcing rib of the second housing 2 abuts against the circuit board 3.

[0053] After the circuit board 3 is installed, the first housing 1 is placed above the second housing 2. The first housing 1 is limited by the baffle 23 on the second housing 2. After alignment, the first housing 1 is pressed towards the second housing 2. The slot 13 inside the first housing 1 is locked with the buckle 24 on the baffle 23 of the second housing 2 to complete the assembly of the device. At this time, the top post 12 on the reinforcing rib of the first housing 1 is exactly abutting against the circuit board 3. At this time, the first through hole 16 in the recess 15 on the side of the first housing 1 corresponds to the second through hole 26 on the second housing 2. The first housing 1 and the second housing 2 can be further tightened by bolts, nuts and other fasteners as needed.

[0054] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A circuit board anti-loosening fixing device for fixing a circuit board (3), characterized in that: It includes a first housing (1) and a second housing (2) disposed on the first housing (1). The first housing (1) and the second housing (2) cooperate to form a cavity. The second housing (2) is provided with a plurality of limiting mechanisms (25) for fixing the circuit board (3). The limiting mechanism (25) includes a protrusion (251), a recess (252) and a fixing part (253) connected in sequence.

2. The circuit board anti-loosening fixing device according to claim 1, characterized in that: The limiting mechanism (25) is located inside the cavity and is vertically mounted on the second housing (2).

3. The circuit board anti-loosening fixing device according to claim 1, characterized in that: The second housing (2) is provided with a baffle (23), which is located inside the cavity.

4. The circuit board anti-loosening fixing device according to claim 3, characterized in that: The end (111) of the baffle (23) is provided with a buckle (24), and the inner side wall of the first housing (1) is provided with a groove (13) that cooperates with the buckle (24).

5. The circuit board anti-loosening fixing device according to claim 1, characterized in that: A stop post (22) is provided on the top surface of the second housing (2), and a top post (12) that cooperates with the stop post (22) of the second housing (2) is provided on the bottom wall of the first housing (1).

6. The circuit board anti-loosening fixing device according to claim 1, characterized in that: The second housing (2) has a second reinforcing rib (21) on its top surface.

7. The circuit board anti-loosening fixing device according to claim 1, characterized in that: The bottom wall of the first housing (1) is provided with a first reinforcing rib (11), and the first reinforcing rib (11) includes an end (111) connected to the inner side wall of the first housing (1).

8. The circuit board anti-loosening fixing device according to claim 1, characterized in that, The first housing (1) has a recess (15) on its side, the recess (15) has a first through hole (16), and the second housing (2) has a second through hole (26) corresponding to the first housing (1).

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