Clamp

Abstract

The utility model provides a clamp. The clamp comprises a positioning frame and a positioning seat, the positioning frame comprises a frame plate and a plurality of buckles, each buckle comprises a clamping block and a reset piece, the clamping blocks can move between a first position close to the placing area and a second position away from the placing area relative to the frame plate, the reset pieces can apply reset force sliding towards the first positions to the clamping blocks, and first positioning holes are formed in the clamping blocks; the multiple buckles can jointly clamp the plate when the clamping blocks are located at the first positions. The positioning seat comprises a bottom plate and a plurality of positioning columns arranged on the bottom plate, each positioning column is provided with a guide face back to the central axis of the bottom plate, the end, away from the bottom plate, of each guide face inclines towards the central axis of the bottom plate, and the positioning columns can be inserted into the first positioning holes when the frame plate is buckled towards the bottom plate. And the clamping block is pushed to move from the first position to the second position through the guide surface. The clamp can realize simultaneous movement of a plurality of clamping blocks, is high in operation efficiency and simple in structure, and prolongs the service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED display screen processing equipment, and particularly relates to a clamp. Background Art

[0002] With the development of LED display technology, the spacing between the lamp beads on the light board of the LED display is getting smaller and smaller, and even the light board no longer has a board edge. Therefore, SMT equipment such as printers and mounters can no longer directly fix the PCB that forms the light board through the track, but need to use a clamp to assist in fixing the PCB in order to perform the lamp bead mounting operation.

[0003] The current related clamps generally achieve clamping through multiple buckles arranged on the periphery of the positioning frame. Specifically, the buckle includes a card block, a spring and a handle. The card block is slidably connected to the positioning frame and can move between a first position close to the center of the positioning frame and a second position away from the center of the positioning frame. The spring is connected between the card block and the positioning frame and is used to apply an elastic force to the card block to move back to the middle of the positioning frame. The handle is rotatably connected to the positioning frame, and the card block elastically rests on the handle under the action of the spring. The handle has a short-interval edge and a long-interval edge connected to each other. The distance between the short-interval edge and the rotating axis of the handle is smaller than the distance between the long-interval edge and the rotating axis of the handle. The handle can be switched between the first position and the second position by rotation. When the handle is in the first position, the card block elastically rests on the short-interval edge, and the card block is in the second position at this time. When the handle is in the second position, the card block elastically rests on the long-interval edge, and the card block is in the first position at this time. When it is necessary to stick lamp beads on the PCB, the handles of each buckle can be rotated to the first position. At this time, each card block avoids the installation area, and then the PCB is placed in the installation area surrounded by the card block. Then, the handle of each buckle is rotated to the second position in turn, so that each card block moves to the first position under the push of the handle. In this way, multiple buckles jointly complete the clamping of the PCB edge, so as to print solder paste and patch operations on the PCB.

[0004] However, the multiple buckles in a clamp require the positions of the handles to be adjusted one by one, which is inefficient. In addition, the buckle structure is relatively complex and easily damaged, resulting in a short life of the clamp. Utility Model Content

[0005] The utility model aims to provide a clamp, aiming to solve the technical problems in the current related technology that the buckles on the clamp need to adjust the handle position one by one to make each clamping block reach the second position, which is inefficient, complex in structure and short in life.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] Provided is a fixture, comprising a positioning frame and a positioning seat;

[0008] The positioning frame includes a frame plate and a plurality of buckles, the frame plate has a placement area for placing a plate, the plurality of buckles are arranged along the circumference of the placement area, the buckle includes a clamping block movably connected to the frame plate and a reset member connecting the frame plate and the clamping block, the clamping block can move between a first position close to the placement area and a second position away from the placement area relative to the frame plate, the reset member can apply a reset force to the clamping block to slide toward the first position, the clamping block is provided with a first positioning hole in a direction perpendicular to the plane where the placement area is located, and the plurality of buckles can clamp the plate together when each of the clamping blocks is located at the first position;

[0009] The positioning seat includes a base plate and a plurality of positioning posts arranged on the base plate, the plurality of positioning posts are arranged along a ring path, and each positioning post corresponds to each blocking block one by one, the positioning post has a guide surface facing away from the central axis of the base plate, and an end of the guide surface away from the base plate is inclined toward the central axis of the base plate, and the positioning post can be inserted into the first positioning hole when the frame plate is buckled toward the base plate, and the blocking block is pushed from the first position to the second position through the guide surface.

[0010] As one of the implementation modes, the frame plate is provided with a placement groove for limiting the position of the plate, and the placement area is located at the bottom of the placement groove.

[0011] As one of the embodiments, the frame plate is provided with a plurality of slide grooves, each of the card blocks is slidably connected to a slide groove, the slide groove is connected to the placement groove, the reset member is a spring arranged between the groove wall of the slide groove and the card block, and when the card block is in the second position, the spring is in a compressed state.

[0012] As one of the implementation modes, a serration structure is provided on the end surface of the clamping block facing the placement groove.

[0013] As one of the implementation modes, the top of each rack in the sawtooth structure is inclined 10°-60° toward the bottom of the placement groove.

[0014] As one of the embodiments, a second positioning hole connected to the first positioning hole is formed at the bottom of the slide groove, and the second positioning hole is engaged with the corresponding positioning column when the frame plate is buckled toward the bottom plate.

[0015] As one of the embodiments, the frame plate is provided with a cover plate at the groove of each of the slide grooves, and the cover plate is used to limit the block from escaping from the slide groove. The cover plate is provided with a third positioning hole connected to the first positioning hole, and the third positioning hole is engaged with the corresponding positioning column when the frame plate is buckled toward the base plate.

[0016] As one of the embodiments, the positioning column includes a connected tip and a rod, the rod is connected to the base plate, the tip is located at an end of the rod away from the base plate and has a tapered surface, and the tapered surface includes the guide surface.

[0017] As one of the implementation modes, the positioning seat further includes a limit frame arranged on the bottom plate, and the limit frame is used to limit the position of the frame plate when the positioning frame is buckled on the positioning seat.

[0018] As one of the implementation modes, the bottom plate is provided with an avoidance groove on one side where the positioning column is provided, and the avoidance groove passes through to the outer side surface of the bottom plate.

[0019] The technical effect of the utility model relative to the prior art is that when the frame plate is not buckled with the bottom plate, the block is located at the first position. When the plate needs to be clamped, the frame plate is buckled toward the bottom plate along the direction perpendicular to the positioning surface of the bottom plate, so that each positioning column is respectively inserted into the first positioning hole of the corresponding block. The frame plate is continuously pressed toward the bottom plate, and the hole wall of the first positioning hole abuts against the guide surface. Since the guide surface is an inclined surface, the block can overcome the reset force under the pushing action of the guide surface and move to the second position to avoid the placement area, so as to place the plate in the placement area of ​​the frame plate, and then the frame plate is moved in a direction away from the bottom plate until the positioning column is disengaged from the first positioning hole, and the block moves toward the first position under the reset force of the reset member until multiple blocks are clamped together at the edge of the plate. In this way, multiple blocks can move toward the second position at the same time through the buckling of the frame plate and the bottom plate, and move toward the first position at the same time through the separation of the frame plate and the bottom plate, without adjusting the position one by one, with high operation efficiency, and realizing the rapid loading and disassembly of the plate. The clamp realizes the movement of the clamp block by plugging and matching the positioning column with the first positioning hole, has a simple structure and a prolonged service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1It is a top view of the positioning frame of the clamp provided by the embodiment of the utility model, wherein the clamping block is in the first position;

[0022] Figure 2 is a top view of a positioning frame of a clamp provided in an embodiment of the utility model, wherein the clamping block is in the second position;

[0023] Figure 3 It is a top view of the positioning seat of the clamp provided in the embodiment of the utility model;

[0024] Figure 4 yes Figure 1 A cross-sectional view of the fixture at RR;

[0025] Figure 5 yes Figure 4 The enlarged view of A in FIG.

[0026] Figure 6 yes Figure 5 An enlarged view of the card block in the second position;

[0027] Figure 7 yes Figure 3 Cross-sectional view at SS.

[0028] Description of reference numerals:

[0029] 10. Positioning frame; 11. Frame plate; 1101. Mounting surface; 1102. Second positioning hole; 12. Buckle; 1201. First positioning hole; 121. Block; 1211. Sliding portion; 1212. Clamping portion; 122. Resetting member; 121a. Sawtooth structure; 13. Cover plate; 1301. Third positioning hole; 14. Step structure; 101. Placement slot; 102. Weight reduction hole; 103. Slide slot; 104. Accommodation slot; 20. Positioning seat; 21. Bottom plate; 2101. Positioning surface; 22. Positioning column; 221. Rod portion; 222. Tip portion; 2201. Guide surface; 23. Limiting frame; 201. Avoidance slot; 202. Perforation. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In this embodiment, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] The utility model provides a clamp for clamping a plate. The plate is a plate-like structure. In the following embodiments, the plate may be a PCB. When it is necessary to set electronic devices such as lamp beads and chips on the PCB, the PCB may be clamped by the clamp first to fix the position of the PCB to prevent the PCB from shifting during subsequent patch or welding operations. Of course, the plate may also be other plate-like structures, which is not limited here.

[0036] See also Figures 1 to 3 The fixture includes a positioning frame 10 and a positioning seat 20. The positioning frame 10 and the positioning seat 20 are both independent structures, and the two are used in conjunction to achieve clamping and loosening of the plate.

[0037] The positioning frame 10 includes a frame plate 11 and a plurality of buckles 12. The frame plate 11 may be in the shape of a plate or may be a structure fixed to the upper end of a certain structural member, which is not limited here. The frame plate 11 has a placement area for placing a plate, and a plurality of buckles 12 are arranged along the circumference of the placement area. The positions of the buckles 12 are based on being able to clamp the plate together, which is not limited specifically. When the plate is a square PCB, the plate has four right-angled sides, and the same number of buckles 12 are arranged corresponding to each right-angled side of the plate. For example, two buckles 12 are arranged corresponding to each right-angled side, and the number of buckles 12 is eight at this time. Among them, the frame plate 11 may have a mounting surface 1101, and the plurality of buckles 12 are all arranged on one side of the mounting surface 1101 of the frame plate 11. In other embodiments, the buckles 12 may also be located at the edge of the frame plate 11, which is not limited here.

[0038] See also Figures 4 to 6 The buckle 12 includes a block 121 and a reset member 122. The block 121 is movably connected to the frame plate 11. The block 121 can move between a first position and a second position relative to the frame plate 11. When the block 121 is in the first position, the block 121 is close to the placement area. When the block 121 is in the second position, the block 121 is away from the placement area. The reset member 122 connects the frame plate 11 and the block 121. The reset member 122 can apply a reset force to the block 121 to slide toward the first position, that is, the block 121 can overcome the reset force under the action of an external force and move toward the second position. After the external force is removed, the block 121 can be reset to the first position under the action of the reset force. When the plate is located in the placement area, multiple blocks 121 can clamp the plate together under the action of the reset force. At this time, the block 121 can be located between the first position and the second position, or in the first position. Multiple blocks 121 can release the plate when they are all located in the second position, that is, release the clamping of the plate. The second position may be a specific position or any unspecified position where the clamping block 121 is separated from the edge of the plate and can be used for the plate to be taken out, and there is no limitation here.

[0039] The block 121 is provided with a first positioning hole 1201 in a direction perpendicular to the plane where the placement area is located, that is, the opening direction of the first positioning hole 1201 is perpendicular to the mounting surface 1101. The first positioning hole 1201 can be a through hole or a blind hole.

[0040] The positioning seat 20 includes a bottom plate 21 and a plurality of positioning posts 22 disposed on the bottom plate 21. The bottom plate 21 has a positioning surface 2101. The plurality of positioning posts 22 are disposed on the positioning surface 2101. The plurality of positioning posts 22 are arranged along an annular path, and the annular path surrounds the central axis of the bottom plate 21, wherein the central axis of the bottom plate 21 refers to an axis passing through the central position of the bottom plate 21. Each positioning post 22 corresponds to each block 121 one by one. The positioning post 22 has a guide surface 2201 facing away from the central axis of the bottom plate 21. The end of the guide surface 2201 away from the bottom plate 21 is inclined toward the central axis of the bottom plate 21, that is, the guide surface 2201 is an inclined surface, and the end of the guide surface 2201 away from the bottom plate 21 is close to the central axis of the bottom plate 21, and the end of the guide surface 2201 close to the bottom plate 21 is away from the central axis of the bottom plate 21. The positioning post 22 can be inserted into the first positioning hole 1201 when the frame plate 11 is buckled toward the bottom plate 21, and pushes the block 121 from the first position to the second position through the guide surface 2201. The guide surface 2201 can be a plane or a curved surface in the extension direction of the positioning post 22, as long as it can guide the block 121.

[0041] It should be noted that the frame plate 11 snapping toward the bottom plate 21 means that the frame plate 11 moves toward the positioning area in a direction perpendicular to the positioning surface 2101, and the position of each block 121 is directly opposite to the position of each positioning column 22 in a direction perpendicular to the positioning surface 2101. At this time, the mounting surface 1101 can be facing the bottom plate 21, or the mounting surface 1101 can be facing away from the bottom plate 21, as long as the positioning column 22 can be inserted into the first positioning hole 1201. When the block 121 is pushed to the second position by the positioning column 22, the frame plate 11 can be against the bottom plate 21. Of course, in other embodiments, when the block 121 is pushed to the second position by the positioning column 22, the frame plate 11 can also be spaced apart from the bottom plate 21, which is not limited here.

[0042] When the frame plate 11 is not engaged with the bottom plate 21, the block 121 is located at the first position. When the plate needs to be clamped, the frame plate 11 is engaged toward the bottom plate 21 along the direction perpendicular to the positioning surface 2101 of the bottom plate 21, so that each positioning column 22 is respectively inserted into the first positioning hole 1201 of the corresponding block 121. The frame plate 11 is continuously pressed toward the bottom plate 21, and the hole wall of the first positioning hole 1201 abuts against the guide surface 2201. Since the guide surface 2201 is an inclined surface, the block 121 can overcome the reset force under the push of the guide surface 2201 and move to the second position to avoid the placement area, so as to place the plate in the placement area of ​​the frame plate 11. Then, the frame plate 11 is moved in the direction away from the bottom plate 21 until the positioning column 22 is disengaged from the first positioning hole 1201. The block 121 moves toward the first position under the reset force of the reset member 122 until multiple blocks 121 are clamped together at the edge of the plate. In this way, the multiple blocks 121 can be simultaneously moved toward the second position by the locking of the frame plate 11 and the bottom plate 21, and simultaneously moved toward the first position by the separation of the frame plate 11 and the bottom plate 21, without the need to adjust the positions one by one, with high operation efficiency, and realizing rapid loading and removal of the plate. The clamp realizes the movement of the block 121 by plugging and matching the positioning column 22 with the first positioning hole 1201, has a simple structure, and prolongs the service life.

[0043] The cross section of the first positioning hole 1201 can be circular, polygonal, elliptical, or irregular. Taking the case where the cross section of the first positioning hole 1201 is circular as an example, optionally, when the block 121 reaches the second position under the push of the positioning column 22, the positioning column 22 can be adapted to the first positioning hole 1201, and the central axis of the positioning column 22 coincides with the central axis of the first positioning hole 1201. In other words, when the positioning column 22 is just inserted into the first positioning hole 1201, the central axis of the positioning column 22 is farther away from the central axis of the bottom plate 21 relative to the central axis of the first positioning hole 1201. Of course, the aperture of the first positioning hole 1201 can also be larger than the diameter of the positioning column 22, which is not limited here.

[0044] In some embodiments, see Figure 1 and Figure 4 The frame plate 11 is provided with a placement groove 101 for limiting the position of the plate, and the placement area is located at the bottom of the placement groove 101. The groove wall of the limiting groove can limit the movement of the plate, so that the plate can be initially positioned through the placement groove 101, so that the plate can be quickly placed between the multiple blocks 121. It should be noted that the placement groove 101 can be a groove-shaped structure opened on the mounting surface 1101 of the frame plate 11, or a groove-shaped structure formed by a structural member protruding from the mounting surface 1101, which is not limited here.

[0045] Optionally, at least one weight-reducing hole 102 may be provided at the bottom of the placement groove 101. The weight-reducing hole 102 can reduce the gravity of the frame plate 11, making it easier for users or equipment to operate the positioning frame 10. The weight-reducing hole 102 is also used for tools to pass through to push the plate out of the placement groove 101, while preventing the plate from being adsorbed on the bottom of the placement groove 101 due to static electricity or water stain tension. At this time, the other areas outside the weight-reducing hole 102 at the bottom of the placement groove 101 form a placement area for supporting the plate.

[0046] exist Figure 1 In the embodiment shown, four weight-reducing holes 102 are provided at the bottom of the placement groove 101, and the four weight-reducing holes 102 are arranged in an array, so that the bottom of the placement groove 101 forms a field-shaped frame. The frame plate 11 is a quadrilateral, and the placement groove 101 is a quadrilateral. Each side of the frame plate 11 and each side of the placement groove 101 correspond to the four right-angled sides of the placement area.

[0047] Of course, the frame plate 11 may not have the placement groove 101 , and in this case, the frame plate 11 may also have the weight-reducing hole 102 .

[0048] In some embodiments, see Figure 5 and Figure 6 The frame plate 11 is provided with a plurality of slide grooves 103, the number of which is equal to the number of the blocks 121, and each block 121 is slidably connected to a slide groove 103, and the slide groove 103 is connected to the placement groove 101. The blocks 121 can slide in the slide groove 103 to switch between the first position and the second position, wherein the blocks 121 can extend out of the opening of the slide groove 103 on the groove side wall of the placement groove 101 when clamping the edge of the plate, or can be flush with the opening of the slide groove 103 on the groove side wall of the placement groove 101. The depth of the placement groove 101 can be the same as the thickness of the plate, or higher than the thickness of the plate. In this way, the setting of the slide groove 103 can not only realize the limiting and guiding of the blocks 121, but also realize the clamping of the edges of the plates in the placement groove 101 by the blocks 121.

[0049] Optionally, the bottom of the slide groove 103 is lower than the bottom of the placement groove 101, so that the bottom of the slide groove 103 and the bottom of the placement groove 101 form a step structure 14, and the step structure 14 can be used to limit the block 121 from escaping from the slide groove 103 through the opening of the slide groove 103 on the groove side wall of the placement groove 101. Based on this, the block 121 may include a connected sliding portion 1211 and a clamping portion 1212, the sliding portion 1211 is adapted to the slide groove 103, and is slidably connected to the slide groove 103, and is limited in the slide groove 103 through the step structure 14, and the clamping portion 1212 is arranged on the side of the sliding portion 1211 facing the placement groove 101, and is spaced from the bottom of the slide groove 103 to avoid the step structure 14 in the sliding direction of the block 121, so that the clamping portion 1212 can extend into the placement groove 101 when the block 121 is in the first position to clamp the edge of the plate. When the block 121 is at the first position, the sliding portion 1211 may abut against the step structure 14 or may be spaced apart from the step structure 14 , which is not limited here.

[0050] In other embodiments, the depth of the placement groove 101 may also be smaller than the thickness of the plate. In this case, the slide groove 103 may not be provided. In this case, the block 121 needs to be clamped on the edge of the plate protruding from the placement groove 101. Alternatively, the slide groove 103 may be provided. In this case, the block 121 may be clamped at any position on the edge of the plate.

[0051] Among them, see Figure 5 and Figure 6 The reset member 122 may be disposed in the slide slot 103 and located on a side of the block 121 away from the placement slot 101. Optionally, the reset member 122 is a spring disposed between the slot wall of the slide slot 103 and the block 121, and the reset force is an elastic force. When the block 121 is in the second position, the spring is in a compressed state to apply an elastic force to the block 121 to move toward the first position.

[0052] Of course, the spring may also be located on the side of the block 121 facing the placement slot 101 . When the block 121 is in the second position, the spring is in a stretched state to apply an elastic force to the block 121 to move toward the first position.

[0053] In other embodiments, the reset member 122 may also be two magnets, one of which is connected to the clamping block 121 and the other is connected to the frame plate 11 , and the reset force is the magnetic repulsion between the two magnets.

[0054] In some embodiments, see Figure 5 and Figure 6, the first positioning hole 1201 is a through hole, the bottom of the slide groove 103 is provided with a second positioning hole 1102, the second positioning hole 1102 is also a through hole, the first positioning hole 1201 and the second positioning hole 1102 are connected in the axial direction, that is, the projection of the first positioning hole 1201 on the bottom of the slide groove 103 and the projection of the second positioning hole 1102 on the bottom of the slide groove 103 have an overlapping part. The second positioning hole 1102 is inserted into the positioning column 22 when the frame plate 11 is buckled toward the bottom plate 21. In other words, when the frame plate 11 is buckled toward the bottom plate 21, the positioning column 22 passes through the first positioning hole 1201 and then is inserted into the second positioning hole 1102, or passes through the second positioning hole 1102 and then is inserted into the first positioning hole 1201. The second positioning hole 1102 plays a positioning role for the positioning column 22, preventing the frame plate 11 from shaking between multiple positioning columns 22. The size of the second positioning hole 1102 can be matched with the positioning post 22 . When the positioning post 22 is inserted into the first positioning hole 1201 and the second positioning hole 1102 , the central axis of the first positioning hole 1201 coincides with the central axis of the second positioning hole 1102 .

[0055] Of course, the second positioning hole 1102 can also be a blind hole. When the second positioning hole 1102 is a blind hole, the locking direction of the frame plate 11 and the base plate 21 must be that the mounting surface 1101 faces the base plate 21. When the frame plate 11 is locked toward the base plate 21, the positioning column 22 passes through the first positioning hole 1201 and then engages with the second positioning hole 1102.

[0056] In some embodiments, see Figure 5 and Figure 6 , the frame plate 11 is provided with a cover plate 13 at the notch of each slide groove 103, and the cover plate 13 is used to limit the block 121 from escaping from the slide groove 103. The cover plate 13 and the groove wall of the slide groove 103 together form a slideway, and the block 121 is slidably connected in the slideway. The cover plate 13 is provided with a third positioning hole 1301 connected to the first positioning hole 1201, and the third positioning hole 1301 is inserted into the positioning column 22 when the frame plate 11 is buckled toward the bottom plate 21. In other words, the central axis of the third positioning hole 1301 coincides with the central axis of the second positioning hole 1102. The third positioning hole 1301 can realize the limitation of the positioning column 22, so as to realize the limitation of the positioning column 22 together with the second positioning hole 1102, and the limiting effect is better.

[0057] Optionally, in order to achieve a flat surface of the positioning frame 10, a receiving groove 104 is provided on the frame plate 11, a groove bottom of the receiving groove 104 is provided on the slide groove 103, and the cover plate 13 is received in the receiving groove 104 and fixedly connected to the frame plate 11. The clamping portion 1212 may protrude from the sliding portion 1211 in the direction in which the slide groove 103 is provided, and when the clamping block 121 is in the second position, the clamping portion 1212 abuts against the cover plate 13.

[0058] In some embodiments, see Figure 7 The positioning column 22 includes a connected rod 221 and a tip 222. The central axis of the tip 222 coincides with the central axis of the rod 221 and is perpendicular to the positioning surface 2101. The rod 221 is connected to the bottom plate 21. The tip 222 is located at the end of the rod 221 away from the bottom plate 21. The tip 222 has a conical surface, and the conical surface includes a guide surface 2201. That is, the side of the conical surface away from the central axis of the bottom plate 21 forms the guide surface 2201. At this time, the positioning column 22 can be nail-shaped. In this way, the positioning column 22 is easy to process and produce, has no requirements for the installation direction, and can be quickly installed. In other embodiments, it can also be wedge-shaped, which is not limited here.

[0059] In order to improve the wear resistance of the clamping block 121, the material of the clamping block 121 can be synthetic stone or aluminum alloy. However, if the hardness of the clamping block 121 is too high, it is easy to cause the clamping surface of the clamping block 121 that abuts against the edge of the plate to be worn, thereby causing the plate to fall out, that is, the clamping force of the clamping block 121 is insufficient due to the wear of the clamping surface, and the plate falls out from between the clamping blocks 121. To solve this problem, in some embodiments, refer to Figure 4 A serration structure 121a is provided on the end surface of the block 121 facing the placement groove 101. The serration structure 121a can reduce the contact area between the block 121 and the plate, thereby reducing the wear on the edge of the plate and preventing the plate from escaping from the clamping of the block 121, thereby ensuring the reliability of the electronic device when being welded on the plate and reducing the maintenance rate and scrap rate in the process.

[0060] Optionally, the top of each rack in the sawtooth structure 121a is inclined 10°-60° toward the bottom of the placement groove 101, so that the force direction of each rack in the sawtooth structure 121a is inclined toward the bottom of the placement groove 101, thereby increasing the friction force required when the plate escapes from the placement groove 101 and improving the clamping reliability of the clamp. The sawtooth structure 121a is also provided on the clamping portion 1212.

[0061] In some embodiments, see Figure 3 and Figure 7 The positioning seat 20 further includes a limit frame 23 disposed on the bottom plate 21. Specifically, the limit block is disposed on the positioning surface 2101 of the bottom plate 21. The limit frame 23 is used to limit the position of the frame plate 11 when the positioning frame 10 is buckled on the positioning seat 20. In this way, the frame plate 11 can be initially positioned by the limit frame 23, that is, the positioning column 22 can be quickly inserted into the first positioning hole 1201.

[0062] Optionally, the limiting frames 23 may be L-shaped, and each limiting frame 23 is used to limit the four corners of the frame plate 11 respectively.

[0063] In some embodiments, see Figure 3 and Figure 7 The bottom plate 21 has an outer side surface that circumferentially surrounds the positioning surface 2101. The bottom plate 21 is provided with an avoidance groove 201 on one side of the positioning surface 2101. The avoidance groove 201 passes through the outer side surface of the bottom plate 21. When the frame plate 11 is buckled on the bottom plate 21, the operator can insert a finger through the avoidance groove 201 to remove the plate from between the plurality of limit frames 23. The tool can also be inserted through the avoidance groove 201 to lift or clamp the plate from between the plurality of limit frames 23.

[0064] Optionally, a through hole 202 is provided on the bottom plate 21, and the through hole 202 can be used to reduce the weight of the bottom plate 21. A plurality of positioning posts 22 are arranged around the through hole 202, and the avoidance groove 201 penetrates the hole wall of the through hole 202 for easy processing. The bottom plate 21 is in the shape of a square, and includes four right-angle frames connected end to end in sequence, and two adjacent right-angle frames are perpendicular to each other. There can be two avoidance grooves 201, and the two avoidance grooves 201 are respectively arranged on two opposite right-angle frames, and the two avoidance grooves 201 extend in the same direction and are located on the same straight line for easy insertion of fingers or tools.

[0065] The above descriptions are only some specific embodiments of the utility model, and only specifically describe the technical principles of the utility model. These descriptions are only for explaining the principles of the utility model and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model, and other specific implementation methods of the utility model that can be associated with the technicians in this field without creative work, should be included in the protection scope of the utility model.

Claims

1. A clamp, characterized in that: include: A positioning frame, comprising a frame plate and a plurality of buckles, wherein the frame plate has a placement area for placing a plate, the plurality of buckles are arranged along the circumference of the placement area, the buckles include a clamping block movably connected to the frame plate and a reset member connecting the frame plate and the clamping block, the clamping block can move between a first position close to the placement area and a second position away from the placement area relative to the frame plate, the reset member can apply a reset force to the clamping block to slide toward the first position, the clamping block is provided with a first positioning hole in a direction perpendicular to the plane where the placement area is located, and the plurality of buckles can clamp the plate together when each of the clamping blocks is located at the first position; A positioning seat comprises a base plate and a plurality of positioning posts arranged on the base plate, wherein the plurality of positioning posts are arranged along a ring path, and each positioning post corresponds to each blocking block one by one, and the positioning post has a guide surface facing away from the central axis of the base plate, and an end of the guide surface away from the base plate is inclined toward the central axis of the base plate, and the positioning post can be inserted into the first positioning hole when the frame plate is buckled toward the base plate, and the blocking block is pushed from the first position to the second position through the guide surface.

2. The clamp according to claim 1, characterized in that The frame plate is provided with a placement groove for limiting the position of the plate, and the placement area is located at the bottom of the placement groove.

3. The clamp according to claim 2, characterized in that The frame plate is provided with a plurality of slide grooves, each of the clamping blocks is slidably connected to a slide groove, the slide groove is connected to the placement groove, the reset member is a spring arranged between the groove wall of the slide groove and the clamping block, and when the clamping block is in the second position, the spring is in a compressed state.

4. The clamp according to claim 2 or 3, characterized in that: A sawtooth structure is arranged on an end surface of the clamping block at one end facing the placement groove.

5. The clamp according to claim 4, characterized in that The top of each rack in the sawtooth structure is inclined at 10°-60° toward the bottom of the placement groove.

6. The clamp according to claim 3, characterized in that A second positioning hole communicating with the first positioning hole is formed at the bottom of the slide groove, and the second positioning hole is inserted into the corresponding positioning column when the frame plate is buckled toward the bottom plate.

7. The clamp according to claim 3 or 6, characterized in that: The frame plate is provided with a cover plate at the notch of each of the slide grooves, the cover plate is used to limit the block from escaping from the slide groove, the cover plate is provided with a third positioning hole connected to the first positioning hole, and the third positioning hole is engaged with the corresponding positioning column when the frame plate is buckled toward the bottom plate.

8. The clamp according to claim 1, characterized in that The positioning column includes a connected tip and a rod, the rod is connected to the bottom plate, the tip is located at an end of the rod away from the bottom plate and has a tapered surface, and the tapered surface includes the guide surface.

9. The clamp according to claim 1, characterized in that: The positioning seat also includes a limit frame arranged on the bottom plate, and the limit frame is used to limit the position of the frame plate when the positioning frame is buckled on the positioning seat.

10. The clamp according to claim 1, characterized in that The bottom plate is provided with an avoidance groove on one side where the positioning column is provided, and the avoidance groove penetrates to the outer side surface of the bottom plate.

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