Board card patching jig

Abstract

The embodiment of the utility model discloses a board card surface mounting jig. The board card surface mounting jig comprises a bottom plate and a first positioning structure, the first positioning structure comprises a movable piece, a torsion spring and a first positioning piece. The movable piece can move in the first direction relative to the bottom plate. The torsion spring comprises a ring body and two force arms, the two force arms are connected with the two ends of the ring body respectively, and the two force arms are arranged at an included angle. The ring body abuts against one of the first limiting face and the second limiting face, and the two force arms abut against the other one of the first limiting face and the second limiting face. The first positioning piece is connected with the movable piece and protrudes out of the movable piece and the bearing face. According to the embodiment of the invention, the first positioning piece can be inserted into the first positioning hole in the board card, so that the installation stability of the board card on the board card surface mounting jig is improved. And the first positioning piece can be driven by the movable piece and the torsional spring to move so as to realize insertion connection with board cards of different models. The structural design that the movable piece is matched with the torsional spring to drive the first positioning piece to move is simple and light, operation is convenient, design cost is low, and application and popularization are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of patch equipment, and in particular to a board patch fixture. Background Art

[0002] When boards are soldered and produced in the SMT (Surface Mounted Technology) process, special SMT jigs are usually customized in advance to assist in production based on product characteristics because the boards are relatively thin. However, special SMT jigs are only suitable for a single model of boards, and not for multiple models of boards. In response to this, the relevant technology proposes to set a rotatable pressing arm on the SMT jig. Since the pressing arm has a certain length, the pressing arm will at least partially press against different models of boards to achieve pressing and positioning of the boards.

[0003] However, the rotating pressing arm is positioned by pressing, and the board still has the risk of shaking, which affects the welding operation. Utility Model Content

[0004] The embodiment of the present application provides a board patch fixture, which is used to improve the problem in the related art that the rotating pressing arm is positioned by pressing, but the board still has the risk of shaking, which affects the welding operation.

[0005] In the first aspect, an embodiment of the present application provides a board patch fixture, including a base plate and a first positioning structure. The base plate has a bearing surface, and the base plate has a first limiting surface. The first positioning structure includes a movable sheet, a torsion spring and a first positioning member. The movable sheet can move relative to the base plate along a first direction. The movable sheet is provided with a second limiting surface, and the second limiting surface is arranged relative to the first limiting surface along the first direction. The torsion spring includes a ring body and two force arms, the two force arms are respectively connected to the two ends of the ring body, and the two force arms are arranged at an angle. The torsion spring is located between the first limiting surface and the second limiting surface, and the ring body abuts one of the first limiting surface and the second limiting surface, and the two force arms abut the other of the first limiting surface and the second limiting surface. The first positioning member is connected to the movable sheet and protrudes from the movable sheet and the bearing surface.

[0006] The embodiment of the present application is designed such that the first positioning member protrudes from the movable sheet and the bearing surface. When the board is set on the bearing surface, the first positioning member can be inserted into the first positioning hole on the board, thereby improving the stability of the board on the board patch fixture. The first positioning member can move under the drive of the movable sheet and the torsion spring, thereby achieving the connection with boards of different models and improving the application scope of the board patch fixture. The structural design of the movable sheet and the torsion spring driving the movement of the first positioning member is simple and lightweight, easy to operate, and has a low design cost, which is conducive to promotion and use.

[0007] When the board and card patch fixture of the embodiment of the present application is in use, the board and card can be first placed on the side of the bearing surface of the base plate, and then the movable sheet can be pushed to move it in the first direction relative to the base plate to compress and deform the torsion spring. Specifically, the movable sheet moves in the direction in which its second limiting surface is close to the first limiting surface to compress and deform the torsion spring, so that the first positioning piece on the movable sheet can be inserted into the first positioning hole on the board and card; thereafter, the movable sheet is released, and the movable sheet has a tendency to move toward the initial position under the action of the restoring force of the torsion spring, that is, the movable sheet has a tendency to move its second limiting surface in the direction away from the first limiting surface, so that the first positioning piece on the movable sheet can tighten the board and card, thereby ensuring the flatness of the board and card and avoiding the risk of welding caused by heat deformation of the board and card.

[0008] In some embodiments, the two moment arms cross.

[0009] Based on the above embodiment, the two force arms of the torsion spring are arranged to cross each other, so the ring body only needs to include one elastic ring to meet the needs, which can simplify the structure of the torsion spring.

[0010] In some embodiments, a limiting hole is provided on the bottom plate, and the inner wall of the limiting hole formed by the bottom plate includes a first inner wall, the first inner wall and the second limiting surface are arranged opposite to each other along a first direction, the first limiting surface includes the first inner wall, and the force arm abuts against the first inner wall.

[0011] Based on the above embodiment, by setting a limiting hole on the base plate and forming a first limiting surface abutting against the torsion spring through the inner wall surface of the limiting hole, on the one hand, the weight of the base plate can be reduced, and on the other hand, one end of the torsion spring abutting against the first limiting surface will be placed in the limiting hole, which is conducive to reducing the size of the board and card patch fixture.

[0012] In some embodiments, two limiting holes are provided on the bottom plate, and the two limiting holes are spaced apart along the second direction on opposite sides of the movable sheet, the second direction is perpendicular to the first direction, the bottom plate has two first inner walls, and the two force arms respectively abut the two first inner walls.

[0013] Based on the above embodiment, by setting two limiting holes, compared with connecting the two limiting holes to form one limiting hole, the structural strength of the base plate near the limiting hole can be enhanced, and the two force arms respectively abut the first inner walls of the two limiting holes, compared with the two force arms abutting the first inner wall of the same limiting hole, it is beneficial to the installation and positioning of the two force arms.

[0014] In some embodiments, the first positioning structure also includes a baffle, the movable sheet extends along a first direction, the baffle extends along a second direction, the second direction is perpendicular to the first direction, the middle of the baffle is located on the side of the movable sheet away from the bottom plate and blocks part of the movable sheet, and both ends of the baffle are connected to the bottom plate.

[0015] Based on the above embodiments, the provision of the blocking piece can prevent the movable piece from falling off the bottom plate in a direction perpendicular to the bearing surface.

[0016] In some embodiments, a flange is provided on the movable sheet, the flange is provided at an angle with the movable sheet, and the flange has a second limiting surface; the flange protrudes from the baffle, and along the first direction, the flange is located between the baffle and the first limiting surface.

[0017] Based on the above embodiment, when the torsion spring is restored, that is, when the second limiting surface of the flange moves away from the first limiting surface, the blocking piece limits the position of the flange to prevent the movable piece from moving out of the bottom plate along the first direction.

[0018] In some embodiments, a guide groove extending along the first direction is disposed on the bearing surface, and the movable sheet can be movably disposed in the guide groove.

[0019] Based on the above embodiment, the provision of the guide groove is conducive to guiding the movement of the movable piece relative to the base plate along the first direction, improving the stability of the movement of the movable piece along the first direction, and realizing the assembly positioning of the movable piece on the base plate.

[0020] In some embodiments, the base plate has a first edge with a notch, the movable sheet has a first end and a second end opposite to each other along a first direction, the first end is closer to the first edge than the second end, the first end is located in the notch, and the second end is connected to the first positioning member.

[0021] Based on the above embodiment, when the user pushes the movable sheet to move relative to the bottom plate in the first direction, the user can push the movable sheet from the notch, which makes it more convenient to apply force. Moreover, the setting of the notch is conducive to reducing the weight of the bottom plate.

[0022] In some embodiments, the carrying surface has a placement area for placing the board, and the placement area is provided with a plurality of through holes.

[0023] Based on the above embodiments, the setting of the through holes can, on the one hand, reduce the weight of the base plate, and on the other hand, when the board is placed on the board patch fixture, the board can be set corresponding to the through holes, so that the board can not only be heated by the hot air on the side away from the bearing surface, but also by the hot air passing through the through holes, thereby increasing the heating speed of the board and improving the reflow soldering efficiency.

[0024] In some embodiments, the board patch fixture further includes a second positioning structure, the second positioning structure and the first positioning structure are spaced apart along the first direction, the second positioning structure includes a second positioning member, the second positioning member is connected to the bottom plate and protrudes from the bearing surface.

[0025] Based on the above embodiment, the board can be located between the first positioning structure and the second positioning structure along the first direction, so that the two opposite sides of the board are fixed by the first positioning structure and the second positioning structure respectively. Since the positioning structures on the two opposite sides of the board are different, it can play a foolproof effect, ensure the product quality of the board, reduce the loss caused by human errors, and meet the SMT production process requirements.

[0026] In some embodiments, the board patch fixture includes multiple first positioning structures and multiple second positioning structures, the multiple first positioning structures are arranged at intervals along the second direction, the second direction is perpendicular to the first direction, and the second positioning structures and the first positioning structures are arranged one-to-one along the first direction.

[0027] Based on the above embodiments, the provision of multiple first positioning structures and multiple second positioning structures can improve the installation and fixing position of the board on the board patch fixture, and improve the installation stability of the board.

[0028] In some embodiments, the first positioning member includes a positioning post; the second positioning member includes a positioning post.

[0029] Based on the above embodiments, the structures of the first positioning member and the second positioning member can be simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of a board patch fixture provided in an embodiment of the present application;

[0032] Figure 2 yes Figure 1 The schematic diagram of the structure when the board is set on the board patch fixture shown;

[0033] Figure 3 yes Figure 1 A schematic diagram of the partial structure of the bottom plate and the first positioning structure of the board and card patch fixture shown;

[0034] Figure 4 yes Figure 3 Schematic diagram of the back structure;

[0035] Figure 5 yes Figure 3 A structural schematic diagram showing that the middle movable plate moves relative to the bottom plate along a first direction and the torsion spring is in a compressed state.

[0036] Description of reference numerals:

[0037] 1. Board patch fixture;

[0038] 10. bottom plate; 11. bearing surface; 111. guide groove; 12. first limiting surface; 13. limiting hole; 131. first inner wall; 14. first edge; 141. notch; 15. through hole;

[0039] 20. first positioning structure; 21. movable sheet; 211. second limiting surface; 212. flange; 213. first end; 214. second end; 22. torsion spring; 221. ring body; 222. force arm; 23. first positioning member; 24. baffle;

[0040] 30. second positioning structure; 31. second positioning member;

[0041] 2. Board; 201. First positioning hole; 202. Second positioning hole;

[0042] x, first direction; y, second direction. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0044] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0045] When boards (such as IOT boards) are produced by SMT (Surface Mounted Technology) process, special SMT jigs are usually customized in advance to assist in production based on product characteristics because the thickness of the boards is relatively thin (usually between 0.5mm-1.0mm). However, special SMT jigs are only suitable for a single model of boards, not for multiple models of boards. In this regard, the related art proposes to set a rotatable pressing arm on the SMT jig. Since the pressing arm has a certain length, the pressing arm will at least partially press against different models of boards to achieve the pressing positioning of the boards.

[0046] However, the setting of the rotating pressing arm is positioned by pressing, and the board still has the risk of shaking, which affects the welding operation. Based on this, the embodiment of the present application provides a board patch fixture, which can improve the stability of the board installation on the board patch fixture by plugging the protruding first positioning member into the positioning hole on the board. And the first positioning member can move under the drive of the movable plate and the torsion spring to achieve plug-in with different models of boards and cards, thereby improving the scope of application of the board patch fixture, and the structural design of the movable plate and the torsion spring to drive the movement of the first positioning member is simple and lightweight, easy to operate, low design cost, and conducive to popularization and use.

[0047] Specifically, see Figures 1 to 5 The board and card patch fixture 1 includes a base plate 10 and a first positioning structure 20. The base plate 10 has a bearing surface 11, and the bearing surface 11 is used to place the board and card 2. The first positioning structure 20 includes a movable sheet 21, a torsion spring 22 and a first positioning member 23. The movable sheet 21 can move relative to the base plate 10 along the first direction x. The movable sheet 21 is provided with a second limiting surface 211. The second limiting surface 211 is arranged relative to the first limiting surface 12 on the base plate 10 along the first direction x. The torsion spring 22 includes a ring body 221 and two force arms 222. The two force arms 222 are respectively connected to the two ends of the ring body 221, and the two force arms 222 are arranged at an angle. The torsion spring 22 is located between the first limiting surface 12 and the second limiting surface 211, and the ring body 221 abuts against one of the first limiting surface 12 and the second limiting surface 211, and the two force arms 222 abut against the other of the first limiting surface 12 and the second limiting surface 211. The first positioning member 23 is connected to the movable sheet 21 and protrudes from the movable sheet 21 and the supporting surface 11 .

[0048] The first positioning member 23 of the above-mentioned design protrudes from the movable sheet 21 and the bearing surface 11. When the board 2 is set on the bearing surface 11, the first positioning member 23 can be inserted into the first positioning hole 201 on the board 2, thereby improving the stability of the installation of the board 2 on the board patch fixture 1. The first positioning member 23 can move under the drive of the movable sheet 21 and the torsion spring 22, so as to achieve the connection with boards 2 of different models, thereby improving the application range of the board patch fixture 1. The structural design of the movable sheet 21 and the torsion spring 22 driving the first positioning member 23 to move is simple and light, easy to operate, low in design cost, and conducive to popularization and use.

[0049] It should be noted that the board patch jig 1 can also be placed on a transmission mechanism during use. For example, the board patch jig 1 is placed on a transmission track so that the board patch jig 1 can be transmitted between multiple stations. The board patch jig 1 of the embodiment of the present application can be applied to various types of boards 2, and can also be used to realize the transmission between multiple stations through the same set of board patch jigs 1 when processing various types of boards 2, avoiding the delay of production efficiency and progress due to frequent production / switching of special jigs, reducing the investment cost of jigs (no need to invest in jig costs for each product) and shortening the production cycle (no jig production time), facilitating factory management, and saving storage space.

[0050] When the board and card patch fixture 1 of the embodiment of the present application is in use, the board and card 2 can be first placed on the side of the bearing surface 11 of the base plate 10, and then the movable piece 21 can be pushed to make it move relative to the base plate 10 along the first direction x, so that the torsion spring 22 is compressed and deformed. Specifically, the movable piece 21 moves in the direction in which its second limiting surface 211 is close to the first limiting surface 12, so that the torsion spring 22 is compressed and deformed, so that the first positioning piece 23 on the movable piece 21 can be inserted into the first positioning hole 201 on the board and card 2; thereafter, the movable piece 21 is released, and the movable piece 21 has a tendency to move toward the initial position under the action of the restoring force of the torsion spring 22, that is, the movable piece 21 has a tendency to move its second limiting surface 211 in the direction away from the first limiting surface 12, so that the first positioning piece 23 on the movable piece 21 can tighten the board and card 2, thereby ensuring the flatness of the board and card 2 and avoiding the risk of welding caused by heat deformation of the board and card 2.

[0051] It should be noted that the above-mentioned ring body 221 abuts against one of the first limit surface 12 and the second limit surface 211, and the two force arms 222 abut against the other of the first limit surface 12 and the second limit surface 211. It can be: the ring body 221 abuts against the first limit surface 12, and the two force arms 222 abut against the second limit surface 211; it can also be: the ring body 221 abuts against the second limit surface 211, and the two force arms 222 abut against the first limit surface 12, and there is no limitation on this.

[0052] Next, the bottom plate 10 will be further described.

[0053] See also Figure 3, a limiting hole 13 is provided on the bottom plate 10, and the inner wall of the bottom plate 10 forming the limiting hole 13 includes a first inner wall 131, the first inner wall 131 and the second limiting surface 211 are arranged opposite to each other along the first direction x, the first limiting surface 12 includes the first inner wall 131, and the force arm 222 abuts against the first inner wall 131. By providing the limiting hole 13 on the bottom plate 10, and forming the first limiting surface 12 abutting against the torsion spring 22 through the inner wall surface of the limiting hole 13, on the one hand, the weight of the bottom plate 10 can be reduced, and on the other hand, one end of the torsion spring 22 abutting against the first limiting surface 12 will be placed in the limiting hole 13, which is conducive to reducing the size of the board and card patch fixture 1.

[0054] See also Figure 4 , Figure 4 yes Figure 3 The back structure diagram of Figure 4 , two limiting holes 13 are provided on the bottom plate 10, and the two limiting holes 13 are spaced apart on opposite sides of the movable sheet 21 along the second direction y, and the second direction y is perpendicular to the first direction x, and the bottom plate 10 has two first inner walls 131, and the two force arms 222 respectively abut against the two first inner walls 131. By providing two limiting holes 13, compared with two limiting holes 13 being connected to form one limiting hole 13, the structural strength of the bottom plate 10 near the limiting hole 13 can be enhanced, and the two force arms 222 respectively abut against the first inner walls 131 of the two limiting holes 13, compared with two force arms 222 abutting against the first inner wall 131 of the same limiting hole 13, it is beneficial to the installation and positioning of the two force arms 222.

[0055] It should be noted that, in addition to being designed as the inner wall of the above-mentioned limiting hole 13, the first limiting surface 12 on the base plate 10 can also be designed as a limiting plate protruding from the base plate 10, and the limiting plate has the first limiting surface 12. The embodiment of the present application does not limit the specific structure of the first limiting surface 12.

[0056] See also Figure 3 The bearing surface 11 is provided with a guide groove 111 extending along the first direction x, and the movable piece 21 can be movably arranged in the guide groove 111. The setting of the guide groove 111 is conducive to guiding the movement of the movable piece 21 relative to the bottom plate 10 along the first direction x, improving the stability of the movement of the movable piece 21 along the first direction x, and realizing the assembly positioning of the movable piece 21 on the bottom plate 10.

[0057] See also Figure 3 and Figure 5 , Figure 5 The movable sheet 21 moves along the first direction x relative to the base plate 10 and the torsion spring 22 is in a compressed state. The movable sheet 21 moves along the first direction x relative to the base plate 10, which can be achieved by the movable sheet 21 moving along the first direction x in the guide groove 111.

[0058] The bottom plate 10 has a first edge 14, and the first edge 14 is provided with a notch 141. The movable sheet 21 has a first end 213 and a second end 214 that are opposite to each other along the first direction x. The first end 213 is closer to the first edge 14 than the second end 214. The first end 213 is located at the notch 141, and the second end 214 is connected to the first positioning member 23. In this way, when the user pushes the movable sheet 21 to move relative to the bottom plate 10 along the first direction x, the movable sheet 21 can be pushed from the notch 141, and the force application is more convenient. In addition, the notch 141 is provided to help reduce the weight of the bottom plate 10.

[0059] See also Figure 1 and Figure 2 The bearing surface 11 has a placement area for placing the board 2, and the placement area is provided with a plurality of through holes 15. The provision of the through holes 15 can, on the one hand, reduce the weight of the base plate 10, and on the other hand, when the board 2 is placed on the board patch fixture 1, the board 2 can be arranged corresponding to the through holes 15, so that the board 2 can be heated not only by the hot air away from the bearing surface 11, but also by the hot air passing through the through holes 15, thereby increasing the heating speed of the board 2 and improving the reflow soldering efficiency.

[0060] The bottom plate 10 can be made of a material with good thermal conductivity to increase the heating speed of the board 2 on the bottom plate 10. For example, the bottom plate 10 can be made of aluminum.

[0061] The surface of the bottom plate 10 may be oxidized to increase hardness, reduce friction damage and deformation, and extend service life.

[0062] Next, the first positioning structure 20 is further described.

[0063] See also Figure 3 The movable sheet 21 is provided with a flange 212, which is arranged at an angle with the movable sheet 21, and has a second limiting surface 211. The second limiting surface 211 is formed by the flange 212, and the flange 212 has a light structure and is easy to manufacture.

[0064] It should be noted that, in addition to being formed by the flange 212 described above, the second limiting surface 211 on the movable sheet 21 can also be designed to be provided with another limiting hole on the movable sheet 21, and the inner wall of the other limiting hole includes the second limiting surface 211. Since the movable sheet 21 is relatively thin, the inner wall of the other limiting hole provided therein will be relatively narrow. Therefore, in the actual design process, the overall thickness of the movable sheet 21 or the thickness of the movable sheet 21 at the other limiting hole can be flexibly adjusted according to demand, and this is not limited.

[0065] See also Figure 3, the two force arms 222 of the torsion spring 22 can cross. If the two force arms 222 of the torsion spring 22 cross, the ring body 221 only includes one elastic ring to meet the needs, and the structure of the torsion spring 22 can be simplified.

[0066] It should be noted that the two force arms 222 of the torsion spring 22 may not cross. In this case, in order to stabilize the structure of the torsion spring 22, the coil 221 of the torsion spring 22 may include more than one coil of elastic coil. For example, the coil 221 may include one coil, one and a half coils, two coils, two and a half coils of elastic coil, etc., without limitation.

[0067] The torsion spring 22 can be made of alloy material, wherein the alloy material has good heat resistance, elastic limit and fatigue resistance. For example, the torsion spring 22 can be made of steel material, which is not limited to this.

[0068] See also Figure 3 The first positioning member 23 may be a positioning column, and the cross section of the positioning column may be circular, polygonal, etc. The first positioning member 23 may be connected to the first positioning hole 201 by clearance fit, etc., which is not limited thereto.

[0069] The height of the first positioning member 23 protruding from the bearing surface 11 can be greater than or equal to 0.5 mm and less than or equal to 2 mm, so that the first positioning member 23 can be adapted to boards of various thicknesses. Optionally, the height of the first positioning member 23 protruding from the bearing surface 11 can be 0.5 mm, 0.8 mm, 1 mm, 1.5 mm, 2 mm, etc., which is not limited to this.

[0070] The first positioning member 23 can be made of stainless steel. Stainless steel has high strength, can reduce wear and deformation during use, and extend the service life.

[0071] See also Figure 3 The first positioning structure 20 may further include a baffle 24, the movable sheet 21 extends along the first direction x, the baffle 24 extends along the second direction y, the middle of the baffle 24 is located on the side of the movable sheet 21 away from the bottom plate 10 and blocks part of the movable sheet 21, and both ends of the baffle 24 are connected to the bottom plate 10. The setting of the baffle 24 can prevent the movable sheet 21 from falling off from the bottom plate 10 in a direction perpendicular to the bearing surface 11.

[0072] Furthermore, the flange 212 on the movable sheet 21 may protrude from the blocking sheet 24, and along the first direction x, the flange 212 is located between the blocking sheet 24 and the first limiting surface 12. In this way, when the torsion spring 22 is restored, that is, when the second limiting surface 211 of the flange 212 moves in a direction away from the first limiting surface 12, the blocking sheet 24 limits the position of the flange 212 to prevent the movable sheet 21 from moving out of the bottom plate 10 along the first direction x.

[0073] See also Figure 4 The baffle 24 and the base plate 10 can be connected and fixed by means of screws, etc. The head of the screw can be located on the side of the base plate 10 away from the bearing surface 11 to prevent the head of the screw from protruding from the bearing surface 11 and hindering the installation of the board 2 on the board patch fixture 1 or the pushing of the movable sheet 21.

[0074] The board patch fixture 1 may include a plurality of first positioning structures 20, and the plurality of first positioning structures 20 may be distributed substantially along the first direction x and / or the second direction y to fix different parts of the board 2. For example, the board 2 may be fixed by at least one first positioning structure 20 on opposite sides. For another example, the board 2 may be fixed by at least one first positioning structure 20 on each side.

[0075] See also Figure 1 and Figure 2 , the board patch fixture 1 may also include a second positioning structure 30, the second positioning structure 30 and the first positioning structure 20 are spaced apart along the first direction x, the second positioning structure 30 includes a second positioning member 31, the second positioning member 31 is connected to the bottom plate 10 and protrudes from the bearing surface 11. At this time, the board 2 can be located between the first positioning structure 20 and the second positioning structure 30 along the first direction x, so that the opposite sides of the board 2 are fixed by the first positioning structure 20 and the second positioning structure 30 respectively. Since the positioning structures on the opposite sides of the board 2 are different, it can play a fool-proof effect, ensure the product quality of the board 2, reduce the loss caused by human errors, and meet the SMT production process requirements.

[0076] The second positioning member 31 can be inserted into the second positioning hole 202 on the board 2 to fix the board 2. The second positioning member 31 can be substantially a positioning column, and the cross section of the positioning column can be substantially circular, polygonal, etc. The second positioning member 31 can be connected to the second positioning hole 202 by means of clearance fit, etc., which is not limited thereto.

[0077] The height of the second positioning member 31 protruding from the bearing surface 11 can be greater than or equal to 0.5 mm and less than or equal to 2 mm, so that the second positioning member 31 can be adapted to boards of various thicknesses. Optionally, the height of the second positioning member 31 protruding from the bearing surface 11 can be 0.5 mm, 0.8 mm, 1 mm, 1.5 mm, 2 mm, etc., which is not limited to this.

[0078] The second positioning member 31 can be installed on the base plate 10 by riveting, which ensures the connection reliability between the second positioning member 31 and the base plate 10 and reduces the maintenance cost caused by loosening, falling off, skewing and other problems in the future.

[0079] The second positioning member 31 can be made of stainless steel. Stainless steel has high strength, can reduce wear and deformation during use, and extend the service life.

[0080] See also Figure 1 and Figure 2 The board patch fixture 1 may include a plurality of first positioning structures 20 and a plurality of second positioning structures 30, wherein the plurality of first positioning structures 20 are arranged at intervals along the second direction y, and the second positioning structures 30 are arranged one-to-one with the first positioning structures 20 along the first direction x. The arrangement of the plurality of first positioning structures 20 and the plurality of second positioning structures 30 can improve the installation and fixing position of the board 2 on the board patch fixture 1, and improve the installation stability of the board 2.

[0081] The second positioning structures 30 and the first positioning structures 20 are arranged one-to-one in correspondence along the first direction x, so that the distribution of the various fixing positions on the board 2 can be roughly symmetrical, thereby preventing the board 2 from shifting after being fixed.

[0082] In the embodiment of the present application, the board patch fixture 1 may include two first positioning structures 20 and two second positioning structures 30. The first positioning members 23 of the two first positioning structures 20 may be centrally arranged, and thus, the second positioning members 31 of the two second positioning structures 30 may also be centrally arranged, so that the board 2 positioned by the two first positioning members 23 and the two second positioning members 31 are approximately located at the center of the base plate 10, which can reduce the deviation of the board 2 and the adjustment time of the production equipment. Among them, the spacing between two adjacent first positioning members 23 along the second direction y can be approximately 45 mm, which is not limited.

[0083] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to at least two, for example, two, three, four, etc. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0084] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A board patch fixture, characterized in that: The board patch fixture comprises: A bottom plate, the bottom plate having a bearing surface, and the bottom plate having a first limiting surface; A first positioning structure, the first positioning structure includes a movable sheet, a torsion spring and a first positioning member, the movable sheet can move along a first direction relative to the base plate, the movable sheet is provided with a second limiting surface, the second limiting surface and the first limiting surface are arranged opposite to each other along the first direction; the torsion spring includes a ring body and two force arms, the two force arms are respectively connected to the two ends of the ring body, and the two force arms are arranged at an angle; the torsion spring is located between the first limiting surface and the second limiting surface, and the ring body abuts against one of the first limiting surface and the second limiting surface, and the two force arms abut against the other of the first limiting surface and the second limiting surface; the first positioning member is connected to the movable sheet and protrudes from the movable sheet and the bearing surface.

2. The board patch fixture according to claim 1, characterized in that: The two force arms cross each other.

3. The board patch fixture according to claim 1, characterized in that: A limiting hole is provided on the bottom plate, and the inner wall of the bottom plate forming the limiting hole includes a first inner wall, the first inner wall and the second limiting surface are arranged opposite to each other along the first direction, the first limiting surface includes the first inner wall, and the force arm abuts against the first inner wall.

4. The board patch fixture according to claim 3, characterized in that: Two limiting holes are arranged on the bottom plate, and the two limiting holes are arranged at opposite sides of the movable sheet along a second direction, the second direction is perpendicular to the first direction, the bottom plate has two first inner walls, and the two force arms respectively abut against the two first inner walls.

5. The board patch fixture according to claim 1, characterized in that: The first positioning structure also includes: The baffle plate extends along the first direction, the baffle plate extends along the second direction, the second direction is perpendicular to the first direction, the middle part of the baffle plate is located on the side of the movable plate away from the bottom plate and blocks part of the movable plate, and both ends of the baffle plate are connected to the bottom plate.

6. The board patch fixture according to claim 5, characterized in that: The movable sheet is provided with a flange, the flange is arranged at an angle with the movable sheet, and the flange has the second limiting surface; The flange protrudes from the blocking piece, and along the first direction, the flange is located between the blocking piece and the first limiting surface.

7. The board patch fixture according to any one of claims 1 to 6, characterized in that: The bearing surface is provided with a guide groove extending along the first direction, and the movable sheet can be movably disposed in the guide groove.

8. The board patch fixture according to any one of claims 1 to 6, characterized in that: The bottom plate has a first edge, the first edge is provided with a notch, the movable sheet has a first end and a second end opposite to each other along the first direction, the first end is closer to the first edge than the second end, the first end is located in the notch, and the second end is connected to the first positioning member; And / or, the bearing surface has a placement area for placing boards and cards, and the placement area is provided with a plurality of through holes.

9. The board patch fixture according to any one of claims 1 to 6, characterized in that: The board patch fixture also includes: The second positioning structure is spaced apart from the first positioning structure along the first direction, and the second positioning structure includes a second positioning member connected to the bottom plate and protruding from the bearing surface.

10. The board patch fixture according to claim 9, characterized in that: The board patch fixture includes a plurality of the first positioning structures and a plurality of the second positioning structures, wherein the plurality of the first positioning structures are arranged at intervals along a second direction, the second direction is perpendicular to the first direction, and the second positioning structures and the first positioning structures are arranged one-to-one correspondingly along the first direction.

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