Anti-deformation pressing auxiliary circuit board jig

Abstract

The utility model relates to the technical field of circuit board jigs, and discloses an anti-deformation pressing auxiliary circuit board jig which comprises a bottom plate, a pressing groove with a large upper portion and a small lower portion is formed in the middle of the bottom plate in a penetrating mode, and clamping assemblies for positioning a circuit board through elastic extrusion are arranged at corners of the upper surface of the bottom plate. The inner side of the bottom plate is provided with a pressing plate assembly for fixing the circuit board through elastic stretching, through the clamping assemblies arranged in an array, the positions of the movable plate and the clamping blocks are conveniently adjusted through reset springs, then the circuit boards of different sizes are positioned, the circuit boards are prevented from deviating in the reflow soldering transportation process, and the welding quality of the circuit boards is improved. The edge of the circuit board can be conveniently extruded and fixed through the pressing plate assembly matched with the circuit board, deformation of the circuit board in the reflow soldering transportation process can be avoided, meanwhile, the pressing plate assembly can be further fixed through the symmetrically-arranged rubber pads and clamping plates, and therefore secondary reinforcement is achieved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board fixture technology, specifically to an anti-deformation pressing auxiliary circuit board fixture. Background Technology

[0002] Printed circuit boards (PCBs) are core components of electronic devices, used to connect and support electronic components, and to transmit electrical signals and integrate circuits. Currently, during the manufacturing process of PCBs, a reflow soldering step is required. This step requires the use of PCB fixtures, which are tools used to fix, position, or protect printed circuit boards during manufacturing, testing, or assembly.

[0003] Existing circuit board fixtures typically use only two clamps, one above and one below, to hold the circuit board. This process does not provide sufficient clamping and limiting of the circuit board, which can lead to deformation of the circuit board during reflow soldering and material displacement. Therefore, those skilled in the art provide an anti-deformation pressing auxiliary circuit board fixture to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this utility model is to provide an anti-deformation pressing auxiliary circuit board fixture, which solves the problems of existing circuit board fixtures.

[0005] This utility model provides the following technical solution: a deformation-resistant pressing auxiliary circuit board fixture, including a base plate, a pressing groove with a larger upper part and a smaller lower part being opened through the middle of the base plate, a snap-fit ​​component for positioning the circuit board by elastic compression at the upper surface corner of the base plate, and a pressure plate component for fixing the circuit board by elastic stretching on the inner side of the base plate.

[0006] As a preferred embodiment of the above technical solution, the snap-fit ​​assembly includes through slots symmetrically opened on both sides of the pressing slot and penetrating the bottom plate. The through slots are connected to the pressing slots, and the bottom plate is fitted with a right-angled movable plate through the through slots.

[0007] As a preferred embodiment of the above technical solution, a locking block is fixedly installed on the side of the movable plate away from the upper surface and away from the right-angle side, and the locking block matches the pressure plate assembly. A return spring is fixedly installed on the right-angled inner side of the movable plate.

[0008] As a preferred embodiment of the above technical solution, sliding plates are symmetrically installed on the left and right sides of the movable plate, and a movable groove extending inward to the inside of the bottom plate is opened in the middle of the through groove, and the bottom plate is sleeved with the movable plate through the movable groove.

[0009] As a preferred embodiment of the above technical solution, the pressure plate assembly includes right-angled plates distributed at right angles on the upper corners of the pressing groove. A slot is formed through the middle of the right-angled plate. Extension plates are installed at both ends of the right-angled plates. A first socket plate and a second socket plate are respectively sleeved on the outer sides of the two sets of extension plates away from the right-angled plates. Compression springs are symmetrically installed in the inner cavities of the first socket plate and the second socket plate. The other ends of the two sets of extension plates are connected to the inner cavities of the first socket plate and the second socket plate respectively through the two sets of compression springs.

[0010] As a preferred embodiment of the above technical solution, the base plate has symmetrical side grooves extending to the center of the through groove, the edges of the side grooves are connected to the pressing groove, and the base plate is fitted with a rubber pad through the side grooves. A clamping plate is provided on the top of the rubber pad, and bolts for connecting the clamping plate and the base plate are symmetrically provided on the top of the clamping plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention utilizes an array of snap-fit ​​components to facilitate the adjustment of the position of the movable plate and the snap-fit ​​blocks using a return spring, thereby positioning circuit boards of different sizes and preventing them from shifting during reflow soldering and transportation. Furthermore, the matching pressure plate components facilitate the compression and fixation of the circuit board edges, thus preventing deformation during reflow soldering and transportation. Additionally, the symmetrically arranged rubber pads and clamps further secure the pressure plate components, achieving secondary reinforcement. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an anti-deformation pressing auxiliary circuit board fixture;

[0014] Figure 2 An exploded view of a portion of the structure of an anti-deformation pressing auxiliary circuit board fixture;

[0015] Figure 3 This is a schematic diagram of the pressure plate assembly of an anti-deformation pressing auxiliary circuit board fixture;

[0016] Figure 4 A schematic diagram of the connection structure of a right-angled plate in an anti-deformation pressing auxiliary circuit board fixture;

[0017] Figure 5 An enlarged structural view of a deformation-resistant pressing auxiliary circuit board fixture snap-fit ​​assembly;

[0018] Figure 6 An exploded view of the connection structure between a deformation-resistant pressing auxiliary circuit board fixture snap-fit ​​assembly and a base plate;

[0019] Figure 7This is a schematic diagram of the structure of a deformation-resistant pressing auxiliary circuit board fixture clamping assembly.

[0020] 1. Base plate;

[0021] 2. Snap-fit ​​assembly; 201. Through slot; 202. Movable slot; 203. Movable plate; 204. Slide plate; 205. Return spring; 206. Locking block;

[0022] 3. Pressing groove;

[0023] 4. Pressure plate assembly; 401. Right angle plate; 402. Slot; 403. Extension plate; 404. First socket plate; 405. Second socket plate; 406. Compression spring;

[0024] 5. Side groove; 6. Rubber pad; 7. Clamping plate; 8. Bolt. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Please see Figures 1-7 As shown, this utility model provides a technical solution: an anti-deformation pressing auxiliary circuit board fixture, including a base plate 1, a pressing groove 3 with a larger upper part and a smaller lower part through the middle of the base plate 1, a snap-fit ​​component 2 for positioning the circuit board by elastic compression at the upper surface corner of the base plate 1, and a pressure plate component 4 for fixing the circuit board by elastic stretching on the inner side of the base plate 1.

[0027] As one implementation method in this embodiment, please refer to Figure 1 , Figures 5-7 As shown, the snap-fit ​​assembly 2 includes a through groove 201 symmetrically opened on both sides of the pressing groove 3 and penetrating the bottom plate 1. The through groove 201 is cross-shaped and communicates with the pressing groove 3. The bottom plate 1 is fitted with a right-angled movable plate 203 through the through groove 201.

[0028] A locking block 206 is fixedly installed on the side of the movable plate 203 away from the upper surface and away from the right angle side, and the locking block 206 matches the pressure plate assembly 4. A return spring 205 is fixedly installed on the right angle inner side of the movable plate 203. The return spring 205 is a radial spring piece, and both ends of it are connected to the inner wall of the base plate 1.

[0029] Slide plates 204 are symmetrically installed on the left and right sides of the movable plate 203. A movable groove 202 extending into the inside of the bottom plate 1 is opened in the middle of the through groove 201. The bottom plate 1 is sleeved with the movable plate 203 through the movable groove 202.

[0030] The reset spring 205 can work with the base plate 1 to adjust the position of the movable plate 203 and the locking block 206. Then, the edge of the circuit board can be squeezed by the four sets of locking blocks 206, or the circuit board can be positioned by fitting the four sets of locking blocks 206 into the pre-drilled holes on the edge of the circuit board.

[0031] As one implementation method in this embodiment, please refer to Figures 2-4 As shown, the pressure plate assembly 4 includes right-angled plates 401 distributed at right angles on the upper corners of the pressing groove 3. A slot 402 is provided through the middle of the right-angled plate 401, and the slot 402 matches the slot block 206. Extension plates 403 are installed at both ends of the right-angled plate 401. A first socket plate 404 and a second socket plate 405 are respectively sleeved on the outer side of the two sets of extension plates 403 away from the right-angled plate 401. Compression springs 406 are symmetrically installed in the inner cavities of the first socket plate 404 and the second socket plate 405. The other ends of the two sets of extension plates 403 are connected to the inner cavities of the first socket plate 404 and the second socket plate 405 respectively through the two sets of compression springs 406.

[0032] By pulling the four sets of right-angle plates 401, the positions of the extension plate 403, the first socket plate 404, and the second socket plate 405 can be adjusted while the spring sheet 406 is stretched and compressed. This allows the right-angle plates 401 to be adapted to the position of the snap-fit ​​assembly 2 and to press and fix the circuit board in conjunction with the snap-fit ​​assembly 2. In use, the pressing assembly 4 can also be contracted according to the different requirements of the circuit board, and the circuit board and the pressing plate assembly for pressing the circuit board can be positioned synchronously by the snap-fit ​​block 206.

[0033] As one implementation method in this embodiment, please refer to Figure 1 and Figure 2 As shown, the base plate 1 has side grooves 5 extending symmetrically to the middle of the through groove 201. The edge of the side groove 5 is connected to the pressing groove 3. The base plate 1 is fitted with a rubber pad 6 through the side groove 5. A clamping plate 7 is provided on the top of the rubber pad 6. Bolts 8 for connecting the clamping plate 7 and the base plate 1 are symmetrically provided on the top of the clamping plate 7.

[0034] The side groove 5 and rubber pad 6 facilitate the support of the circuit board, and the clamping plate 7, together with two sets of symmetrical bolts 8, is used to squeeze and fix the pressure plate assembly 4 through the clamping plate 7, thereby enhancing the clamping effect of the pressure plate assembly 4.

[0035] Working principle: When in use, first take out the circuit board that needs to be reflow soldered and place it inside the pressing groove 3 opened in the middle of the base plate 1 so that it is stacked on top of the two sets of rubber pads 6. At this time, the appropriate positioning method can be selected according to the state of the circuit board. If the circuit board has a positioning hole reserved on the outside, the circuit board can be directly sleeved on the outside of the card block 206 through the reserved hole on the outside of the circuit board. The position of the movable plate 203 can be adjusted by the circuit board in conjunction with the reset spring 205, and then the circuit board can be positioned by the four sets of card components 2.

[0036] If the circuit board has a positioning hole on the outside, the circuit board can be placed between the four sets of snap-fit ​​components 2. By squeezing the snap-fit ​​block 206, the circuit board can be positioned by the movable plate 203 compressing the return spring 205.

[0037] After the circuit board is positioned, the pressure plate assembly 4 is taken out, and the right-angle plate 401 arranged in the corner array of the pressure plate assembly 4 is pulled, so that the extension plate 403 installed at both ends of the right-angle plate 401 and the compression spring 406 connected to it are extended to adapt to the position of the four sets of snap-fit ​​assemblies 2, and the snap-fit ​​block 206 is snapped in through the snap-fit ​​groove 402 in the middle of the right-angle plate 401, thereby realizing the squeezing operation of the circuit board and avoiding the deformation of the edge of the circuit board during the reflow soldering process;

[0038] Finally, remove the clamping plate 7 and place it on top of the rubber pad 6. The clamping plate 7 is used to clamp the pressure plate assembly 4 and the circuit board. Then, remove the bolt 8 and connect the clamping plate 7 and the base plate 1 to reinforce the pressure plate assembly 4 and further prevent the circuit board from deforming during reflow soldering.

[0039] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A deformation-resistant pressing auxiliary circuit board fixture, comprising a base plate (1), wherein a pressing groove (3) with a larger upper section and a smaller lower section is provided through the center of the base plate (1), characterized in that: The upper surface corner of the base plate (1) is provided with a snap-fit ​​assembly (2) for positioning the circuit board by elastic compression, and the inner side of the base plate (1) is provided with a pressure plate assembly (4) for fixing the circuit board by elastic stretching.

2. The anti-deformation pressing auxiliary circuit board fixture according to claim 1, characterized in that: The snap-fit ​​assembly (2) includes a through groove (201) symmetrically opened on both sides of the pressing groove (3) and penetrating the bottom plate (1). The through groove (201) is connected to the pressing groove (3). The bottom plate (1) is fitted with a right-angled movable plate (203) through the through groove (201).

3. The anti-deformation pressing auxiliary circuit board fixture according to claim 2, characterized in that: A locking block (206) is fixedly installed on the side of the movable plate (203) away from the upper surface and away from the right angle side, and the locking block (206) matches the pressure plate assembly (4). A return spring (205) is fixedly installed on the right angle inner side of the movable plate (203).

4. The anti-deformation pressing auxiliary circuit board fixture according to claim 3, characterized in that: The movable plate (203) is symmetrically equipped with sliding plates (204) on the left and right sides. The middle of the through groove (201) is provided with a movable groove (202) extending into the inside of the bottom plate (1). The bottom plate (1) is connected to the movable plate (203) through the movable groove (202).

5. The anti-deformation pressing auxiliary circuit board fixture according to claim 1, characterized in that: The pressure plate assembly (4) includes right-angled plates (401) arranged at right angles on the upper corners of the pressing groove (3). A slot (402) is provided through the middle of the right-angled plate (401). Extension plates (403) are installed at both ends of the right-angled plate (401). A first socket plate (404) and a second socket plate (405) are respectively sleeved on the outer side of the two sets of extension plates (403) away from the right-angled plate (401). Compression springs (406) are symmetrically installed in the inner cavities of the first socket plate (404) and the second socket plate (405). The other end of the two sets of extension plates (403) is connected to the inner cavity of the first socket plate (404) and the second socket plate (405) respectively through the two sets of compression springs (406).

6. The anti-deformation pressing auxiliary circuit board fixture according to claim 1, characterized in that: The base plate (1) has side grooves (5) extending symmetrically to the middle of the through groove (201) on the left and right sides. The edge of the side groove (5) is connected to the pressing groove (3). The base plate (1) is fitted with a rubber pad (6) through the side groove (5). A clamping plate (7) is provided on the top of the rubber pad (6). Bolts (8) for connecting the clamping plate (7) and the base plate (1) are symmetrically provided on the top of the clamping plate (7).

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