TWI741774B - Anti-arching circuit board holder - Google Patents

Abstract

Disclosed is an anti-arching circuit board holder comprising a rectangular holder body, two clamping devices and a buffer device, wherein the two clamping devices are respectively arranged on the respective side rods of the rectangular holder body so as to clamp the respective sides of a circuit board, the buffer device is elastically connected between one side rod and the corresponding clamping device to absorb the deformation of the circuit board in a left and right direction so as to ease the arch of the circuit board.

Description

Frame type left and right long chuck and anti-arch plate device

The present invention relates to a circuit board rack, particularly to a circuit board rack with anti-arching boards.

The printed circuit board needs to be baked during the manufacturing process. The printed circuit board to be baked is set on the circuit board rack, and the printed circuit board is brought into the oven by the circuit board rack for baking. Circuit board racks are generally equipped with multiple clamps to clamp multiple positions on the periphery of the printed circuit board to fix the printed circuit board and prevent the printed circuit board (especially thin circuit board) from being baked during the baking process. Deformation due to floating or contact contamination between different circuit boards.

However, when the printed circuit board is baked, it will stretch due to thermal expansion. When multiple parts on the peripheral edges are fixed and restricted, the printed circuit board will stretch along between the fixtures and the fixtures. The length and width of the two directions are respectively deformed and arched, that is, the arch. In the case where there are multiple arches and the deformation directions of the arches are not consistent with each other, stress concentration is likely to occur on the printed circuit board, resulting in permanent deformation of the printed circuit board.

Therefore, the purpose of the present invention is to provide a circuit board rack for preventing arching, which can improve the arching problem of the printed circuit board during baking, so as to effectively avoid the printed circuit board from being broken.

The technical means adopted by the present invention to solve the problems of the prior art is to provide a circuit board frame for anti-arching board, which includes: a rectangular frame body, including a top rod, a bottom rod and two side rods. A circuit board mounting space is enclosed between the top rod, the bottom rod, and the two side rods; the two clamps are respectively arranged in the circuit board mounting space so that the clamping opening faces the circuit board mounting space. The side bars respectively clamp the left and right side edges of a circuit board from the left and right sides. Each clamp includes at least one clamp and two clamp bars. Each clamp has two clamps that can be clamped back and forth. Two clamping plates, and the clamping opening is formed between the two clamping plates, and the two clamping strips extend up and down through the clamping openings of each clamping piece, and are respectively arranged in the clamping openings of each clamping piece The clamping plates on the front and rear sides, so that each clamping piece clamps the left and right side edges of the circuit board in a line contact manner by the two clamping bars; and a buffer mechanism is arranged on one of the sides Rod, and is elastically connected between the side rod and the corresponding holder, so that the holder can buffer displacement relative to the side rod in the left and right directions of the rectangular frame, so as to absorb the circuit board in The amount of deformation in the left and right directions improves the arch of the circuit board.

In one embodiment of the present invention, there is provided a circuit board rack for an anti-arching board, wherein the buffer mechanism includes a mounting slide and two elastic elements, the clamp is mounted on the mounting slide, two The elastic element is arranged on the side rod corresponding to the holder, and is connected to the mounting slide from the left and right sides respectively, so that the mounting slide is placed on the rectangular frame by the elastic force of the two elastic elements. The displacement can be buffered in the left and right direction of the body.

In an embodiment of the present invention, there is provided a circuit board frame of an anti-arching board, wherein the elastic element is a spring.

In one embodiment of the present invention, there is provided a circuit board rack for an anti-arching board, wherein the clamping device includes two clamping members, which are respectively connected to the upper and lower ends of each clamping strip.

In one embodiment of the present invention, an anti-arching circuit board rack is provided, wherein the top rod and the bottom rod are arranged up and down side by side, two side rods are arranged side by side, and the two side rods are arranged side by side. The left and right ends of the rod and the bottom rod respectively protrude beyond the left and right outer sides of the two side rods and are respectively connected up and down between the top rod and the bottom rod.

In one embodiment of the present invention, a circuit board rack for anti-arching board is provided, wherein the top rod and the bottom rod are round rods, and the two side rods are rectangular rods.

In one embodiment of the present invention, there is provided a circuit board frame of an anti-arching board, wherein the clamping member is an elastic clamp.

In one embodiment of the present invention, there is provided a circuit board rack for anti-arching board, wherein the elastic clip includes two splints and a torsion spring connected between the two splints, and the two splints use the The torsion force of the torsion spring is elastically clamped back and forth.

Through the technical means adopted by the present invention, the circuit board frame of the anti-arching board of the present invention can clamp the left and right side edges of the circuit board in a manner of forming a line contact, but does not clamp the upper and lower side edges of the circuit board, thereby The clamped circuit board can be freely stretched in the vertical direction during thermal expansion, and the deformation caused by thermal expansion and stretching is limited to the same left and right directions, and the buffer mechanism is used to absorb the amount of deformation in the left and right directions, thereby Reduce or eliminate the arched board to effectively prevent the circuit board from being broken.

Hereinafter, the embodiments of the present invention will be described based on Figs. 1 to 5. This description is not intended to limit the implementation of the present invention, but is a kind of embodiment of the present invention.

As shown in FIGS. 1 to 3, a circuit board frame 100 for an anti-arching board according to an embodiment of the present invention includes: a rectangular frame body 1, two clamps 2 and a buffer mechanism 3.

As shown in Figure 1, the rectangular frame 1 includes a top rod 11, a bottom rod 12, and two side rods 13, 14, and the top rod 11, the bottom rod 12, and the two side rods 13, 14 A circuit board mounting space 10 is enclosed between 14 for mounting a circuit board B (Figure 4).

As shown in FIG. 1, according to the circuit board rack 100 of the anti-arching board according to the embodiment of the present invention, the top rod 11 and the bottom rod 12 are round rods, and the two side rods 13 and 14 are rectangular rods. The top rod 11 and the bottom rod 12 are arranged side by side up and down, the two side rods 13, 14 are arranged side by side, and the two side rods 13, 14 are tied to the left and right ends of the top rod 11 and the bottom rod 12, respectively The manner of protruding beyond the left and right outer sides of the two side rods 13 respectively extends up and down and is connected between the top rod 11 and the bottom rod 12. With such a structure, it is convenient to transport the circuit board rack 100 of the anti-arching board by a conveying mechanism (not shown), and the circuit board rack 100 of the anti-arching board takes the circuit board into the oven Baked or sent to other process steps.

As shown in Figures 1 to 3, the two clamps 2 are respectively arranged on the side rods 13, 14 in such a way that the clamping opening 20 faces the circuit board mounting space 10, so as to separate from each other. The left and right sides clamp the left and right side edges of the circuit board B (Figure 4). Each clamp 2 includes at least one clamp 21 and two clamp bars 22a, 22b. Each clamp 21 has an opposing Two clamping plates 211a, 211b are clamped back and forth, and the clamping opening 20 is formed between the two clamping plates 211a, 211b, and the two clamping strips 22a, 22b extend up and down through the clamping of each clamping piece 21 The openings 20 are respectively provided on the clamping plates 211a, 211b on the front and back sides of the clamping opening 20 of each clamping member 21, so that each clamping member 21 is formed by two clamping strips 22a, 22b. The left and right side edges of the circuit board B are clamped in a line contact manner.

In this embodiment, each of the clamping tools 2 includes two clamping members 21, which are respectively connected to the upper and lower ends of each of the clamping bars 22a, 22b. The clamping member 21 is an elastic clamp. The elastic clip includes two clamping plates 211a, 211b and a torsion spring 212 connected between the two clamping plates 211a, 211b, and the two clamping plates 211a, 211b are relatively rotatable relative to each other by a pivot 213. In combination, the torsion spring 212 is sleeved on the pivot 213, and the two torsion action ends of the torsion spring 212 abut against the two clamping plates 211a and 211b respectively, so that the two clamping plates 211a and 211b are supported by the torsion spring The torsion force of 212 is elastically clamped back and forth. The clamping strip 22a is arranged on the clamping plate 211a, and the clamping strip 22b is arranged on the clamping plate 211b, and moves with the clamping plates 211a and 211b respectively, so that the clamping member 21 passes through the two clamping strips 22a, 22b and clamp the left and right side edges of the circuit board B (Figure 4). Preferably, the length of the clamping strips 22a, 22b is not less than the length of the left and right side edges of the circuit board B, so as to fully clamp the entire side edges of the circuit board B.

More specifically, as shown in Figure 2, in this embodiment, at the corner where the top rod 11 connects with the side rod 13, the corner where the top rod 11 connects with the side rod 14, the bottom At the corner where the rod 12 connects with the side rod 13 and the corner where the bottom rod 12 connects with the side rod 14 are respectively provided with a clamp mounting seat 15. Each clamp mounting base 15 is provided with a plurality of mounting key holes 151 (in this embodiment, there are two mounting key holes for a clamp mounting base), so that the clamping members 21 can be respectively locked by a fastener 152 such as screws. On the fixture mounting base 15. Preferably, among the two clamp mounting seats 15 on the same side rod 13, the mounting lock hole 151 on one of the clamp mounting seats 15 is a round hole, and the other one of the clamp mounting seats 15 is a circular hole. The mounting lock hole 151 is an elongated hole extending along the longitudinal direction of the side rod 13. The setting position of the clamping member 21 locked by the installation lock hole 151 of the round hole is fixed as a reference position, and the clamping member locked by the installation lock hole 151 of the elongated hole The setting position of the 21 can be adjusted relative to the reference position along the longitudinal direction of the side bar 13 to determine the distance between the two clamping pieces 21 of the holder 2 on the side bar 13.

As shown in Figures 2 and 3, the buffer mechanism 3 is provided on one of the side bars 14 and is elastically connected between the side bar 14 and the corresponding holder 2 so that the holder 2 Relative to the side bar 14, the displacement of the rectangular frame 1 in the left-right direction is buffered, so as to absorb the deformation of the circuit board B (Figure 4) in the left-right direction and improve the arch of the circuit board B.

In this embodiment, corresponding to the number of the clamping members 21 of the clamping device 2 on the side rod 14, the buffer mechanism 3 is also provided in two sets. Each group of the buffer mechanism 3 includes a mounting slide 31 and two elastic elements 32a, 32b. The clamp 2 is mounted on the mounting slide 31, and the two elastic elements 32a are provided on the clamp 2. The corresponding side rod 14 is connected to the mounting slide 31 from the left and right sides respectively, so that the mounting slide 31 is placed on the rectangular frame 1 by the elastic force of the two elastic elements 32a, 32b. The displacement can be buffered in the left and right direction. The elastic element 32a, 32b can be a spring.

More specifically, the clamp mounting seat 15 on the side rod 14 is provided with a limiting member 16, and the limiting member 16 is provided with two limiting holes 161 and a limiting piece 162. The two limiting holes 161 are elongated holes extending along the width direction of the side rod 14 (that is, the left and right directions of the rectangular frame 1), and the two fixing holes respectively correspond to the clamp mounting base 15 Keyhole 151. The mounting sliding seat 31 and the clamping member 21 are locked by passing through the mounting lock hole 151 and the limiting hole 161 by a locking member 152 such as screws, so that the mounting sliding seat 31 and the clamping member 21 are locked together. It is provided on the clamp mounting seat 15 in a manner capable of being displaced left and right along the limiting hole 161 of the elongated hole. The limiting piece 162 extends through the clamp mounting base 15 and protrudes from one side of the mounting sliding base 31 to limit the displacement range of the left and right displacement of the mounting sliding base 31.

As shown in Figures 4 and 5, the circuit board holder 100 of the anti-arching board according to the embodiment of the present invention is actually used to clamp the circuit board B (for example, a thin printed circuit board) by using The two clamping plates 211a, 211b of the clamping pieces 21 of the clamping device 2 on one of the side bars 13 relatively rotate to open the clamping opening 20, so that the corresponding two clamping bars 22a, 22a, 211b 22b is relatively far away to form a clamping gap, and the side edges of one of the left and right sides of the circuit board B are correspondingly inserted into the clamping gap, so that the clamping device 2 uses the two clamping bars 22a, 22b to respectively The entire side edge (for example, the left side edge) of the circuit board B is clamped in line contact with both sides of the side edge of the circuit board B. The same operation is applied to the clamp 2 on the other side bar 14, and the two clamp bars 22a, 22b are clamped in line contact with the two sides of the side edge of the circuit board B. The entire side edge (for example, the right side edge) of the opposite side of the circuit board B is held, so that the circuit board B is mounted in the circuit board mounting space 10. For the upper and lower edges of the circuit board B, the circuit board frame 100 of the anti-arch board of the present invention is not clamped. In this way, the circuit board B clamped by the circuit board holder 100 of the anti-arch board of the present invention is clamped by the circuit board B clamped by the circuit board rack 100 of the anti-arch board of the present invention because the left and right side edges are clamped in a line contact manner, and the upper and lower side edges are not clamped. During baking, the expansion of the circuit board B due to thermal expansion will not be restricted by the clamp in the up and down direction, so it can stretch freely in the up and down direction without arching, and the deformation and arching caused by the stretching It is limited to the left and right directions where the clamp 2 is used for clamping. At the same time, in response to the expansion of the circuit board B in the left and right directions, the holder 2 on the side rod 14 will generate a corresponding displacement by the buffer mechanism 3, thereby absorbing the circuit board B in the left and right directions. It can reduce or eliminate the arcing of the circuit board B in the left and right directions, so that the circuit board B can be kept flat during the baking process, so as to obtain a good quality after baking.

With the above structure, the circuit board frame 100 of the anti-arching board of the present invention can clamp the left and right side edges of the circuit board B in a manner of forming a line contact, and the upper and lower side edges of the circuit board B are not clamped. This enables the clamped circuit board B to be freely stretched in the up and down direction during thermal expansion, and the deformation caused by thermal expansion and stretching is limited to the same left and right directions, and at the same time, the buffer mechanism 3 is used to absorb the left and right directions. The deformation of the circuit board B can be reduced or eliminated, thereby effectively avoiding the breakage of the circuit board B.

The above descriptions and descriptions are only descriptions of the preferred embodiments of the present invention. Those with general knowledge of this technology should make other modifications based on the scope of patent applications defined below and the above descriptions, but these modifications should still be made. It is the spirit of the present invention and falls within the scope of the rights of the present invention.

100: Frame type left and right long chuck and anti-arch plate device 1: Rectangular frame 10: Circuit board mounting space 11: ejector 12: bottom bar 13: side stick 14: Sidebar 15: Fixture mounting seat 151: Installation keyhole 152: lock firmware 16: limit parts 161: limit hole 162: limit piece 2: Clamping tool 20: Clamping opening 21: Clamping parts 211a: Splint 211b: splint 212: Torsion spring 213: Pivot 22a: Clip 22b: Clip 3: Buffer mechanism 31: Install the slide 32a: elastic element 32b: Elastic element B: Circuit board

[Figure 1] is a three-dimensional schematic diagram showing a circuit board frame of an anti-arch board according to an embodiment of the present invention; [Figure 2] is an exploded schematic diagram showing the circuit board frame of the anti-arching board according to the embodiment of the present invention; [Figure 3] is an exploded schematic diagram showing the clamping device and the buffer mechanism of the circuit board rack of the anti-arch board according to the embodiment of the present invention; [Figure 4] is a three-dimensional schematic diagram showing the circuit board rack of the anti-arch board according to the embodiment of the present invention when a circuit board is mounted; [Figure 5] is a schematic cross-sectional view showing the circuit board holder of the anti-arching board according to an embodiment of the present invention when a circuit board is mounted.

100: Anti-arch board circuit board rack

1: Rectangular frame

10: Circuit board mounting space

11: ejector

12: bottom bar

13: side stick

14: Sidebar

15: Fixture mounting seat

2: Clamping tool

20: Clamping opening

21: Clamping parts

22a: Clip

22b: Clip

3: Buffer mechanism

Claims (8)

A circuit board rack for anti-arching board, including: A rectangular frame body including a top rod, a bottom rod and two side rods, and a circuit board mounting space is enclosed between the top rod, the bottom rod and the two side rods; Two clamps are arranged on the respective side rods in such a way that the clamping opening faces the circuit board mounting space, so as to clamp the left and right side edges of a circuit board from the left and right sides. Each of the clamps The holder includes at least one clamping piece and two clamping bars, each of the clamping pieces has two clamping plates that can be clamped back and forth relatively, and the clamping opening is formed between the two clamping plates, and the two clamping bars are Extend up and down through the clamping opening of each clamping piece, and are respectively arranged on the clamping plates on the front and back sides of the clamping opening of each clamping piece, so that each clamping piece is formed by two clamping bars Clamp the left and right side edges of the circuit board in a manner of forming a line contact; and A buffer mechanism is provided on one of the side bars and is elastically connected between the side bar and the corresponding holder, so that the holder is in the left-right direction of the rectangular frame with respect to the side bar The displacement can be buffered to absorb the deformation of the circuit board in the left and right directions, and the arch of the circuit board can be improved. The circuit board frame of the anti-arching board according to claim 1, wherein the buffer mechanism includes a mounting slide and two elastic elements, the clamp is installed on the mounting slide, and the two elastic elements are arranged On the side rod corresponding to the holder, and respectively connected to the mounting slide from the left and right sides, so that the mounting slide is moved in the left and right direction of the rectangular frame by the elastic force of the two elastic elements The displacement can be buffered. The circuit board frame of the anti-arching board according to claim 2, wherein the elastic element is a spring. The circuit board frame of the anti-arching board according to any one of claims 1 to 3, wherein the clamping device includes two clamping members, which are respectively connected to the upper and lower ends of each clamping strip. The circuit board frame of the anti-arching board according to any one of claims 1 to 3, wherein the top rod and the bottom rod are arranged up and down side by side, two side rods are arranged side by side, and the two side rods are arranged side by side. The left and right ends of the top rod and the bottom rod respectively protrude beyond the left and right outer sides of the two side rods to respectively extend up and down and are connected between the top rod and the bottom rod. The circuit board frame of the anti-arching board according to claim 5, wherein the top rod and the bottom rod are round rods, and the two side rods are rectangular rods. The circuit board frame of the anti-arching board according to claim 1, wherein the clamping member is an elastic clip. The circuit board frame of the anti-arching board according to claim 7, wherein the elastic clip includes two of the clamping plates and a torsion spring connected between the two clamping plates, and the two clamping plates are twisted by the torsion spring The front and back clamps forcefully and elastically.

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