Clamp

Abstract

The utility model discloses a clamp, which belongs to the technical field of LED display screen assembly and comprises a base, a driving mechanism and a plurality of clamping components, two clamping arms in each clamping component are arranged oppositely, the clamping arms and the base can swing relatively under the driving of the driving mechanism, and corresponding parts of the two clamping arms move oppositely to clamp a workpiece. The two clamping arms in each clamping assembly and the driving mechanism are symmetrically arranged along a reference axis, the driving mechanism can drive the two clamping arms of the clamping assembly to synchronously move, each clamping assembly can synchronously clamp the workpieces in a bidirectional mode, and therefore deviation or dislocation of the multiple workpieces is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screen assembly, in particular to a clamp. Background Art

[0002] Currently, LED display screens are usually composed of multiple display modules (i.e., light panels) spliced ​​on a housing, and multiple display modules are spliced ​​to form a larger display screen. Traditional assembly methods mostly rely on manual operations, that is, operators need to manually align the edges of each display module with the housing, and align two adjacent display modules, and then use adhesives or other fixing methods (such as screws) to complete the combination of the display module and the housing.

[0003] However, due to the inaccuracy of human eye judgment and manual operation, it is difficult to achieve high precision in the alignment between two adjacent display modules, and the alignment between the edge of the display module and the edge of the shell. It is easy to produce offset or misalignment, which easily leads to the phenomenon of bright and dark lines between two adjacent display modules. Therefore, the offset or misalignment of the display module will affect the visual comfort and overall aesthetics. Moreover, when more display modules need to be installed on the shell, the misalignment problem between two adjacent display modules will be continuously magnified, which greatly reduces the production yield. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model aims to provide a clamp to solve the problem of misalignment of the current lamp panel assembly.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A clamp comprises a base, a driving mechanism and a plurality of clamping components;

[0007] The base is connected to the driving mechanism;

[0008] The clamping assembly comprises two clamping arms arranged opposite to each other, the clamping arms are rotatably connected to the base, and the driving mechanism is used to drive the clamping arms and the base to swing relative to each other;

[0009] The two clamping arms of each clamping assembly and the driving mechanism are arranged axially symmetrically along a reference axis.

[0010] Preferably, the clamping assembly comprises a clamping member, the clamping member is slidably connected to the base, and the clamping arm is rotatably connected to the clamping member.

[0011] Preferably, the driving mechanism comprises a first push rod arranged along the reference axis and a transmission platform provided at one end of the first push rod, and one end of the clamping arm is slidably and rotatably connected to the transmission platform.

[0012] Preferably, the driving mechanism comprises a fixed platform, a second push rod and a plurality of transmission arms;

[0013] The fixed platform and the base are relatively fixed, the second push rod is slidably connected to the fixed platform along the reference axis, each transmission arm corresponds to a clamping arm, and both ends of the transmission arm are rotatably connected to the clamping arm and the second push rod respectively.

[0014] Preferably, a plurality of negative pressure holes are provided on the base.

[0015] Preferably, the base has a front side, a back side and a mounting through hole extending through the front side and the back side, and the clamping arm is disposed through the mounting through hole;

[0016] The driving mechanism is located on the back side of the base, and the clamping arm is located at one end of the front side of the base for clamping a workpiece.

[0017] Preferably, a slot is formed at the end of the clamping arm, and the clamping member is movably connected to the slot via a rotating shaft.

[0018] Preferably, the clamping assembly comprises a guide rail provided on the base, and the clamping member is slidably connected to the guide rail.

[0019] Preferably, the clamping assembly comprises an elastic member, one end of the elastic member is connected to the base, and the other end of the elastic member is connected to the clamping member or the clamping arm.

[0020] Preferably, the driving mechanism is movably connected to one end of the clamping arm, and the clamping member is rotatably connected to the other end of the clamping arm.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The two clamping arms in the clamping assembly are arranged opposite to each other, and the clamping arms and the base can swing relative to each other under the drive of the driving mechanism. The corresponding parts of the two clamping arms can clamp the workpiece by moving towards each other, and can release the workpiece by moving away from each other. The two clamping arms and the driving mechanism in each clamping assembly are arranged axially symmetrically along a reference axis. The driving mechanism can drive the two clamping arms of the clamping assembly to move synchronously. Each clamping assembly can clamp the workpiece synchronously in both directions to avoid offset or misalignment of multiple workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is one of the overall structural schematic diagrams of the clamp of the utility model;

[0024] Figure 2 The second schematic diagram of the overall structure of the fixture of the utility model;

[0025] Figure 3 for Figure 1 Schematic diagram of a three-dimensional cross section;

[0026] Figure 4 for Figure 2 Schematic diagram of a three-dimensional cross section;

[0027] Figure 5 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0028] In the figure: 10, base; 11, negative pressure hole; 12, front; 13, back; 14, mounting through hole; 15, mounting cavity; 16, cover plate; 20, driving mechanism; 21, first push rod; 22, second push rod; 23, transmission platform; 24, fixed platform; 25, transmission arm; 30, clamping assembly; 31, clamping arm; 311, slot; 32, clamping member; 33, guide rail; 40, lamp board. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Example 1

[0033] Combination Figures 1 to 3 As shown, the clamp of the present invention is schematically shown, including a base 10, a driving mechanism 20 and a clamping assembly 30.

[0034] The base 10 and the driving mechanism 20 are connected, and the two may be movably connected or fixedly connected.

[0035] The number of the clamping assemblies 30 is one or more, and each clamping assembly 30 includes two clamping arms 31, which are arranged opposite to each other and are rotatably connected to the base 10. The driving mechanism 20 is used to drive the clamping arms 31 and the base 10 to swing relative to each other, and the corresponding parts of the two clamping arms 31 can clamp the workpiece when they move toward each other, and can release the workpiece when they move away from each other.

[0036] The two clamping arms 31 of each clamping assembly 30 and the driving mechanism 20 are arranged axially symmetrically along a reference axis, so that the driving mechanism 20 can drive the two clamping arms 31 of the clamping assembly 30 to move synchronously. In other words, the movement directions of the two clamping arms 31 are arranged axially symmetrically along the reference axis, and the movement speeds are consistent, so that each clamping arm 31 can push the corresponding lamp board 40 (workpiece) to move toward each other and align toward the reference axis.

[0037] Of course, the number of clamping assemblies 30 can be set to two, and the movement directions of the clamping arms 31 of the two clamping assemblies 30 are perpendicular to each other, so that the two clamping assemblies 30 can adjust the position of the light board 40 in two mutually perpendicular directions and keep multiple light boards 40 aligned in two mutually perpendicular directions.

[0038] Specifically, combined Figure 3 The clamping assembly 30 includes a clamping member 32, which is slidably connected to the base 10, and a clamping arm 31 is rotatably connected to the clamping member 32, and the clamping arm 31 is used to drive the clamping member 32 to slide on the base 10. The number of the clamping members 32 is consistent with the number of the clamping arms 31, and multiple light panels 40 can be placed on the base 10. The two clamping members 32 of the clamping assembly 30 move toward each other to push the multiple light panels 40 to move and align, wherein, when the two clamping members 32 move toward each other, the clamping members 32 move toward the reference axis, and when the two clamping members 32 move away from each other, the clamping members 32 move away from the reference axis. The clamping assembly 30 includes a guide rail 33 provided on the base 10, and the clamping member 32 is slidably connected to the guide rail 33. There are multiple guide rails 33, and each clamping member 32 corresponds to two mutually parallel guide rails 33. The provision of multiple guide rails 33 can make the sliding of the clamping member 32 more stable.

[0039] Furthermore, a slot 311 is formed at the end of the clamping arm 31, and the clamping member 32 is movably connected to the slot 311 via a rotating shaft, and the rotating shaft can slide in the slot 311 and can rotate relative to the slot 311 in the slot 311. The base 10 is also provided with an elastic member, one end of which is connected to the base 10, and the other end of which is connected to the clamping member 32 or the clamping arm 31. The elastic member is used to reset the clamping arm 31 or the clamping member 32. More specifically, when the elastic member is connected to the clamping member 32, the elastic force of the elastic member makes the clamping member 32 have a tendency to move away from the reference axis.

[0040] In order to temporarily fix the lamp board 40 on the base 10, a plurality of negative pressure holes 11 are opened on the base 10. Specifically, the base 10 has a front side 12 and a back side 13. The back side 13 of the base 10 is provided with a mounting cavity 15. The bottom wall of the mounting cavity 15 passes through the negative pressure hole 11 to the front side 12 of the base 10. A cover plate 16 is provided at the opening of the mounting cavity 15. The cover plate 16 and the base 10 form a cavity at the mounting cavity 15. By connecting to the cavity through a negative pressure machine, negative pressure can be formed in the cavity. The lamp board 40 placed on the front side 12 of the base 10 is covered on the negative pressure hole 11. The negative pressure in the negative pressure hole 11 can adsorb the lamp board 40 so that it fits tightly to the front side 12 of the base 10.

[0041] The base 10 is also provided with mounting holes 14, which pass through the front side 12 and the back side 13 of the base 10. The number of mounting holes 14 is consistent with the number of clamping arms 31. The clamping arms 31 are passed through the mounting holes 14. The opening area of ​​the mounting holes 14 is larger than the cross-sectional area of ​​the clamping arms 31. When the clamping arms 31 swing relative to the base 10, there is always a gap between the clamping arms 31 and the hole wall of the mounting holes 14. The driving mechanism 20 is located on the back side 13 of the base 10, and the clamping arm 31 is located at one end of the front side 12 of the base 10 for clamping the light board 40 (workpiece). More specifically, the driving mechanism 20 is movably connected to one end of the clamping arm 31, and the clamping member 32 is rotatably connected to the other end of the clamping arm 31. This structural layout of the clamping arm 31, the base 10 and the driving mechanism 20 can avoid mutual interference between the driving mechanism 20 and the light board 40. In other words, the light board 40 and the driving mechanism 20 are respectively located on the front side 12 and the back side 13 of the base 10, and the assemblers will not be affected by the driving mechanism 20 when taking and placing the light board 40.

[0042] Example 2

[0043] like Figure 1 and Figure 3The difference between this embodiment and the first embodiment is that the driving mechanism 20 includes a first push rod 21 arranged along the reference axis and a transmission platform 23 provided at one end of the first push rod 21. One end of the clamping arm 31 is slidably and rotatably connected to the transmission platform 23. Specifically, a slide rail is provided on the transmission platform 23, and the end of the clamping arm 31 is slidably connected to the slide rail, and the end of the clamping arm 31 can rotate relative to the slide rail. The first push rod 21 can move relative to the base 10 along the reference axis. When the first push rod 21 moves toward the base 10, the two clamping members 32 of the clamping assembly 30 move away from each other. When the first push rod 21 moves away from the base 10, the two clamping members 32 of the clamping assembly 30 move toward each other.

[0044] Example 3

[0045] like Figure 2 and Figure 4 The difference between this embodiment and embodiment 1 is that the driving mechanism 20 includes a fixing platform 24 , a second push rod 22 and a plurality of transmission arms 25 .

[0046] The fixed platform 24 and the base 10 are relatively fixed, and the two can be fixedly connected. The second push rod 22 is slidably connected to the fixed platform 24 along the reference axis, and each transmission arm 25 corresponds to a clamping arm 31. The two ends of the transmission arm 25 are respectively rotatably connected to the clamping arm 31 and the second push rod 22. When the second push rod 22 moves toward the base 10, the second push rod 22 drives the clamping arm 31 to swing forward through the transmission arm 25, thereby causing the clamping member 32 to move toward the reference axis. Conversely, when the second push rod 22 moves away from the base 10, the second push rod 22 drives the clamping arm 31 to swing in the opposite direction through the transmission arm 25, thereby causing the clamping member 32 to move away from the reference axis.

[0047] Example 4

[0048] The difference between this embodiment and embodiment 2 is that a slide groove with an arc-shaped extension trajectory is provided on the transmission platform 23, and the end of the clamping arm 31 is movably connected to the slide groove, so that the end of the clamping arm 31 can not only slide in the slide groove, but also rotate relative to the slide groove.

[0049] To summarize, the two clamping arms 31 in the clamping assembly 30 are arranged opposite to each other, and the clamping arms 31 and the base 10 can swing relative to each other under the drive of the driving mechanism 20. The corresponding parts of the two clamping arms 31 can clamp the workpiece by moving toward each other, and can release the workpiece by moving away from each other. The two clamping arms 31 and the driving mechanism 20 in each clamping assembly 30 are axially symmetrically arranged along a reference axis. The driving mechanism 20 can drive the two clamping arms 31 of the clamping assembly 30 to move synchronously, and each clamping assembly 30 can clamp the workpiece synchronously in both directions to avoid offset or misalignment of multiple workpieces.

[0050] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A clamp, characterized in that: It includes a base, a driving mechanism and a plurality of clamping components; The base is connected to the driving mechanism; The clamping assembly comprises two clamping arms arranged opposite to each other, the clamping arms are rotatably connected to the base, and the driving mechanism is used to drive the clamping arms and the base to swing relative to each other; The two clamping arms of each clamping assembly and the driving mechanism are arranged axially symmetrically along a reference axis; The driving mechanism comprises a first push rod arranged along the reference axis and a transmission platform provided at one end of the first push rod, and one end of the clamping arm is slidably and rotatably connected to the transmission platform.

2. The clamp according to claim 1, characterized in that: The clamping assembly comprises a clamping member, the clamping member is slidably connected to the base, and the clamping arm is rotatably connected to the clamping member.

3. The clamp according to claim 1, characterized in that: The driving mechanism includes a fixed platform, a second push rod and a plurality of transmission arms; The fixed platform and the base are relatively fixed, the second push rod is slidably connected to the fixed platform along the reference axis, each transmission arm corresponds to a clamping arm, and both ends of the transmission arm are rotatably connected to the clamping arm and the second push rod respectively.

4. The clamp according to claim 1, characterized in that: A plurality of negative pressure holes are provided on the base.

5. The clamp according to claim 1, characterized in that: The base has a front side, a back side and a mounting through hole extending through the front side and the back side, and the clamping arm is inserted through the mounting through hole; The driving mechanism is located on the back side of the base, and the clamping arm is located at one end of the front side of the base for clamping a workpiece.

6. The clamp according to claim 2, characterized in that: A slot hole is formed at the end of the clamping arm, and the clamping member is movably connected to the slot hole via a rotating shaft.

7. The clamp according to claim 2, characterized in that: The clamping assembly comprises a guide rail arranged on the base, and the clamping member is slidably connected to the guide rail.

8. The clamp according to claim 2, characterized in that: The clamping assembly comprises an elastic member, one end of which is connected to the base, and the other end of which is connected to the clamping member or the clamping arm.

9. The clamp according to claim 2, characterized in that: The driving mechanism is movably connected to one end of the clamping arm, and the clamping member is rotatably connected to the other end of the clamping arm.

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