Anti-loosening device

Abstract

The utility model discloses an anti-loosening device, and belongs to the technical field of fasteners. The anti-loosening device comprises at least two groups of threaded connection assemblies and a limiting piece, wherein the at least two groups of threaded connection assemblies are configured to be mounted on a mounting piece; the limiting piece can be rigidly connected with the at least two sets of threaded connection assemblies and is configured to limit looseness of the at least two sets of threaded connection assemblies relative to the installation piece. The anti-loosening device has a good anti-loosening effect and is convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field especially relates to a lock device. BACKGROUND

[0002] In the electronic product assembly line, usually use carrier and fixture to transfer and clamp workpiece, to improve production efficiency and quality. Carrier and fixture on the flow line, flow line vibration can cause carrier and fixture on the bolt and nut and other threaded connection loose, affect the reliability and stability.

[0003] In the prior art, the anti-loose method of threaded connection includes using self-locking nut, threaded locking glue and series steel wire anti-loose, the above structure is difficult to disassemble, increases the difficulty and cost of maintenance. UTILITY MODEL CONTENTS

[0004] The utility model discloses a lock device, has good anti-loose effect, and convenient dismounting and installation.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A lock device, including at least two sets of threaded connection components and limit pieces, wherein:

[0007] The at least two sets of threaded connection components are configured to be installed on the mounting piece.

[0008] The limit piece can rigidly connect the at least two sets of threaded connection components, and the limit piece is configured to limit the loosening of the at least two sets of threaded connection components relative to the mounting piece.

[0009] In some possible implementation manners, the at least two sets of threaded connection components each include a first threaded connection piece and a second threaded connection piece, the first threaded connection piece is threadedly connected with the mounting piece and can abut against the mounting piece, the second threaded connection piece is threadedly connected with the first threaded connection piece and can abut against the mounting piece, and the limit piece connects the first threaded connection piece in the at least two sets of threaded connection components and abuts against the second threaded connection piece.

[0010] In some possible implementation manners, the limit piece includes limit grooves of the same number as the first threaded connection pieces, and the limit grooves can be clamped into the first threaded connection pieces located between the top portions of the first threaded connection pieces and the top portions of the second threaded connection pieces.

[0011] In some possible implementation manners, a closing portion and a guide open portion are sequentially arranged in the direction from inside to outside along the limit groove at the groove opening of the limit groove.

[0012] In some possible implementation manners, the first threaded connecting piece comprises, in sequence, an end cap, a screw rod, a rod portion and a blocking portion, wherein:

[0013] The end cap is capable of abutting against the mounting piece;

[0014] The screw rod is configured to be threadedly connected with the mounting piece and the second threaded connecting piece;

[0015] The rod portion is capable of being clamped with the limiting groove;

[0016] The blocking portion is configured to limit the limiting piece at the rod portion.

[0017] In some possible implementation manners, each of the at least two sets of threaded connecting assemblies further comprises an elastic piece, the elastic piece is sleeved on the first threaded connecting piece, and two ends of the elastic piece respectively abut against the mounting piece and the second threaded connecting piece.

[0018] In some possible implementation manners, the elastic piece comprises a main body in a tapered structure, the main body is provided with a slot extending from a wide end to a narrow end thereof.

[0019] In some possible implementation manners, a plurality of slots are formed along a circumferential direction of the main body, and each of the slots is uniformly distributed on the main body.

[0020] In some possible implementation manners, the wide end of the main body is folded with a circular ring portion, and the circular ring portion is capable of abutting against the mounting piece.

[0021] In some possible implementation manners, the narrow end of the main body is axially extended with a ring-shaped protrusion, and the ring-shaped protrusion is capable of abutting against the second threaded connecting piece.

[0022] The utility model discloses the beneficial effects of:

[0023] 1. The anti-loose device utilizes the limiting piece to connect at least two sets of threaded connecting assemblies, the limiting piece can exert force on the threaded connecting assembly, thereby limiting the loosening of the at least two sets of threaded connecting assemblies relative to the mounting piece;

[0024] 2. The elastic piece is sleeved between the second threaded connecting piece and the mounting piece on the first threaded connecting piece, when the first threaded connecting piece is tightened, the two ends of the elastic piece abut against the mounting piece and the second threaded connecting piece respectively, the elastic piece is extruded, generates the reverse force to the second threaded connecting piece, the second threaded connecting piece is forced to appear the tightness, and the gap between the threads becomes smaller, and the thread holding capacity is greater;

[0025] 3. The elastic element is provided with a slot to provide deformation space for the elastic element, which facilitates deformation. The elastic deformation of the elastic element generates elastic force, which makes the second threaded connector tend to move away from the mounting part, that is, a preload is always provided to the second threaded connector.

[0026] 4. The elastic element can absorb the energy generated by external vibrations to the anti-loosening device, thus achieving an anti-loosening connection between the first threaded connector and the second threaded connector;

[0027] 5. This anti-loosening device has a simple structure, good anti-loosening effect, and is easy to disassemble and install. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the assembly of the anti-loosening threaded connection structure and the mounting parts provided in a specific embodiment of this utility model;

[0029] Figure 2 This is a top view of the anti-loosening threaded connection structure and mounting component assembly provided in a specific embodiment of this utility model;

[0030] Figure 3 yes Figure 2 AA section view;

[0031] Figure 4 This is an exploded view of the anti-loosening threaded connection structure and mounting components provided in a specific embodiment of this utility model.

[0032] In the picture:

[0033] 1. Threaded connection assembly; 11. First threaded connector; 111. End cap; 112. Screw; 113. Rod portion; 114. Blocking portion; 12. Second threaded connector; 121. Threaded hole; 13. Elastic element; 131. Slot; 132. Annular protrusion; 133. Circular portion;

[0034] 2. Limiting component; 21. Limiting groove; 22. Closing part; 23. Guide opening part;

[0035] 3. Mounting component; 31. Through hole. Detailed Implementation

[0036] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] In the description of the utility model, unless another definite provision and limitation, the term "connect", "connection", "fixed" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or into an organic whole, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two elements of the interaction relationship. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, can also include the first and second features are not direct contact but contact through the additional feature between them. Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the first feature is less than the second feature in horizontal height.

[0039] As Figures 1-4 The utility model provides a kind of anti-loose device, including at least two sets of threaded connection components 1 and limit piece 2. Among them: at least two sets of threaded connection components 1 are configured to be installed in mounting piece 3. Limit piece 2 can rigidly connect at least two sets of threaded connection components 1, and limit piece 2 is configured to limit the loosening of at least two sets of threaded connection components 1 relative to mounting piece 3.

[0040] In an embodiment, mounting piece 3 includes two workpieces stacked in the vertical direction, and the two workpieces are provided with through holes 31 that are in communication with each other in the vertical direction, and the through holes 31 have internal threads.

[0041] In an embodiment, limit piece 2 includes a number of limit grooves 21 equal to the number of first threaded connectors 11, and the limit grooves 21 can be clamped into the first threaded connectors 11 between the top and the top of the second threaded connectors 12. Threaded connection components 1 are provided with two, and limit piece 2 is provided with two limit grooves 21. In other embodiments, limit piece 2 and first threaded connector 11 and second threaded connector 12 can be connected by means such as clamping, threaded connection, etc., without limitation.

[0042] The at least two sets of threaded connection assemblies 1 each comprise a first threaded connection piece 11 and a second threaded connection piece 12. The first threaded connection piece 11 is threadedly connected with the mounting piece 3 and can abut against the mounting piece 3; the second threaded connection piece 12 is threadedly connected with the first threaded connection piece 11 and can abut against the mounting piece 3; the limiting piece 2 is connected with the first threaded connection piece 11 in the at least two sets of threaded connection assemblies 1 and abuts against the second threaded connection piece 12. The second threaded connection piece 12 has an internal thread, for example, the second threaded connection piece 12 is a nut. The first threaded connection piece 11 comprises, in sequence, an end cap 111, a threaded rod 112, a rod portion 113 and a blocking portion 114, and the threaded rod 112 and the rod portion 113 are arranged in a vertical direction. Optionally, the end cap 111, the rod portion 113, the threaded rod 112 and the blocking portion 114 are of an integral structure or a split structure, which is not limited. Optionally, the rod portion 113, the blocking portion 114 and the threaded rod 112 are arranged along a same center line, the outer diameter of the rod portion 113 is smaller than the small diameter of the threaded rod 112, and the outer diameter of the blocking portion 114 is not greater than the large diameter of the threaded rod 112 and is smaller than the inner diameter of the threaded hole 121, so that the second threaded connection piece 12 can be sleeved on the threaded rod 112. Optionally, the first threaded connection piece 11 is a bolt, and the rod portion 113 can be directly machined on the threaded rod 112 of the bolt, so that the structure is simple and the machining is convenient.

[0043] During assembly, the end cap 111 and the second threaded connection piece 12 are located on both sides of the mounting piece 3, i.e., two workpieces, and the end cap 111 can abut against the mounting piece 3, i.e., the bottom of the lower workpiece. The threaded rod 112 is configured to be threadedly connected with the mounting piece 3 and the second threaded connection piece 12, i.e., the threaded rod 112 is sequentially arranged in the through holes 31 of the two workpieces and the second threaded connection piece 12, and the external thread of the threaded rod 112 is threadedly connected with the internal thread of the through holes 31 and the internal thread of the second threaded connection piece 12, respectively. The blocking portion 114 and at least part of the rod portion 113 are located outside the second threaded connection piece 12, the rod portion 113 is in clamping engagement with the limiting groove 21, and the blocking portion 114 is configured to limit the limiting piece 2 at the rod portion 113, so that the two workpieces are connected through the at least two sets of threaded connection assemblies 1 and the limiting piece 2. During disassembly, the limiting piece 2 is removed, and the first threaded connection piece 11 can be screwed. The anti-loosening device has a simple structure, good anti-loosening effect, and convenient disassembly and assembly.

[0044] The anti-loosening device, the limiting groove 21 of the limiting piece 2 is clamped on the rod portion 113, the limiting piece 2 is limited between the blocking portion 114 and the second threaded connection piece 12, the blocking portion 114 is used for blocking the movement of the limiting piece 2 and limiting the movement of the second threaded connection piece 12 away from the end cap 111, so as to prevent the second threaded connection piece 12 from being loosened from the threaded rod 112 and realize stable installation of the limiting piece 2. The limiting piece 2 is used for simultaneously rigidly connecting the at least two sets of threaded connection assemblies 1, so that axial force and torque can be applied to the threaded connection assemblies 1, thereby limiting loosening of the at least two sets of threaded connection assemblies 1 relative to the mounting piece 3.

[0045] The limiting groove 21 is matched with the shape of the rod portion 113, preventing the limiting groove 21 and the rod portion 113 from shaking due to the gap therebetween; the slot opening of the limiting groove 21 is sequentially provided with a closing portion 22 and a guiding open portion 23 from the inside to the outside of the limiting groove 21, the closing portion 22 is provided to reliably limit the rod portion 113 in the limiting groove 21, i.e. the opening of the closing portion 22 is smaller than the outer diameter of the rod portion 113; the guiding open portion 23 is provided to facilitate the installation of the rod portion 113 in the limiting groove 21, i.e. the opening of the guiding open portion 23 is larger than the outer diameter of the rod portion 113. Optionally, the limiting member 2 is in a sheet shape and has a certain elasticity, and the closing portion 22 has a certain deformation capacity to facilitate the rod portion 113 to pass through the closing portion 22.

[0046] Optionally, the shape of the limiting member 2 and the position of the limiting groove 21 are adaptively set according to the positions of the plurality of threaded connection assemblies 1. In the embodiment, the limiting member 2 is in a long strip shape, and the two limiting grooves 21 are arranged on the same side of the limiting member 2 to facilitate the corresponding installation with the two threaded connection assemblies 1. In other embodiments, a plurality of limiting grooves 21 can be arranged on the same side or different sides of the limiting member 2 according to the number of the threaded connection assemblies 1, such as the limiting member 2 is in a circular sheet shape, and the plurality of limiting grooves 21 are arranged along the circumference of the limiting member 2.

[0047] Further, at least two groups of threaded connection assemblies 1 further comprise an elastic member 13, the elastic member 13 is sleeved on the first threaded connecting member 11, and the two ends of the elastic member 13 are respectively abutted against the mounting member 3, i.e. the workpiece on the upper layer and the second threaded connecting member 12, and the limiting member 2 is abutted against the side of the second threaded connecting member 12 away from the elastic member 13. The elastic member 13 has elasticity, so that the second threaded connecting member 12 has a tendency to move away from the mounting member 3, i.e. always provides a pre-tightening force to the second threaded connecting member 12. That is, the elastic member 13 is sleeved between the second threaded connecting member 12 and the mounting member 3 on the first threaded connecting member 11, when the first threaded connecting member 11 is tightened, the two ends of the elastic member 13 are abutted against the mounting member 3 and the second threaded connecting member 12 respectively, the elastic member 13 is extruded, and generates a reverse force to the second threaded connecting member 12, the second threaded connecting member 12 is forced to appear a tightening force, the gap between the threads of the second threaded connecting member 12 and the first threaded connecting member 11 becomes smaller, and the thread holding capacity becomes larger.

[0048] In addition, the elastic member 13 can absorb the energy generated by the vibration of the external environment to the anti-loose device, and realizes the anti-loose threaded connection between the first threaded connecting member 11 and the second threaded connecting member 12. When disassembling, the second threaded connecting member 12 can be rotated. The anti-loose device has the advantages of simple structure, good anti-loose effect, and convenient disassembly and installation.

[0049] The elastic member 13 comprises a conical main body, which is provided with a slot 131 extending from the wide end to the narrow end, so as to provide a deformation space for the elastic member 13, facilitate deformation, generate elastic force by elastic deformation of the elastic member 13, and make the second threaded connecting member 12 have a tendency to move away from the mounting member 3, i.e. always provide a pre-tightening force to the second threaded connecting member 12. Further, the main body is provided with a plurality of slots 131 along the circumference, and each slot 131 is uniformly distributed on the main body. In the present scheme, the elastic member 13 is uniformly and spacedly provided with three slots 131.

[0050] Optionally, the wide end of the main body faces the mounting member 3, and the narrow end faces the second threaded connecting member 12. The wide end of the main body is folded with a circular ring portion 133, which can abut against the mounting member 3, increase the contact area between the elastic member 13 and the mounting member 3, and further increase the friction force between the elastic member 13 and the mounting member, so as to improve the anti-loosening effect. The narrow end of the main body extends in the axial direction with a ring-shaped protrusion 132, which can abut against the second threaded connecting member 12, increase the contact area between the elastic member 13 and the second threaded connecting member 12, and further increase the friction force between the elastic member 13 and the second threaded connecting member 12.

[0051] In summary, the anti-loosening device exerts force on the threaded connecting assembly 1 by the limiting member 2, and provides a pre-tightening force to the second threaded connecting member 12 by the elastic member 13. The overall structure has good anti-loosening effect, and is convenient to disassemble and install.

[0052] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lockout device, characterized by, The application relates to a threaded connection assembly (1) and a limiting piece (2), wherein: The threaded connection assembly (1) is arranged on a mounting piece (3); The limiting piece (2) is rigidly connected to the threaded connection assembly (1) and is arranged to limit loosening of the threaded connection assembly (1) relative to the mounting piece (3).

2. The unscrewing device according to claim 1, characterized in that The threaded connection assembly (1) comprises a first threaded connection piece (11) and a second threaded connection piece (12), the first threaded connection piece (11) is threadedly connected to the mounting piece (1) and is capable of abutting against the mounting piece (1), the second threaded connection piece (12) is threadedly connected to the first threaded connection piece (11) and is capable of abutting against the mounting piece (1), and the limiting piece (2) is connected to the first threaded connection piece (11) of the threaded connection assembly (1) and abuts against the second threaded connection piece (12).

3. The unslinging device of claim 2, wherein The limiting piece (2) comprises a same number of limiting grooves (21) as the first threaded connection piece (11), the limiting grooves (21) are capable of being clamped into the first threaded connection piece (11) located between the top of the first threaded connection piece (11) and the top of the second threaded connection piece (12).

4. The unslinging device of claim 3, wherein The limiting groove (21) is provided with a converging portion (22) and a guide open portion (23) in the direction from inside to outside along the limiting groove (21) at the slot opening of the limiting groove (21).

5. The unslinging device of claim 3, wherein The first threaded connection piece (11) comprises a cap (111), a screw rod (112), a rod portion (113) and a blocking portion (114) connected in sequence, wherein: The cap (111) is capable of abutting against the mounting piece (1); The screw rod (112) is arranged to be threadedly connected to the mounting piece (1) and the second threaded connection piece (12); The rod portion (113) is capable of being clamped and matched with the limiting groove (21); The blocking portion (114) is arranged to limit the limiting piece (2) at the rod portion (113).

6. The unslinging device of claim 2, wherein The threaded connection assembly (1) further comprises an elastic piece (13), the elastic piece (13) is sleeved on the first threaded connection piece (11), and two ends of the elastic piece (13) abut against the mounting piece (1) and the second threaded connection piece (12) respectively.

7. The unsling device of claim 6, wherein, The elastic piece (13) comprises a main body in a conical structure, the main body is provided with a slot (131) extending from a wide end to a narrow end of the main body.

8. The unslinging device of claim 7, wherein, A plurality of slots (131) are arranged on the main body in a circumferential direction, and each slot (131) is uniformly distributed on the main body.

9. The unslinging device of claim 7, wherein, The wide end of the main body is folded with a circular ring portion (133), and the circular ring portion (133) is capable of abutting against the mounting piece (3).

10. The lock washer of claim 7, wherein: The narrow end of the main body is axially extended with a ring-shaped protrusion (132), and the ring-shaped protrusion (132) is capable of abutting against the second threaded connection piece (12).

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