Anti-falling screw assembly and using method thereof

Abstract

The invention discloses an anti-falling screw assembly and a using method thereof.The anti-falling screw assembly comprises a screw assembly body and an anti-falling assembly body, a connecting through hole is formed in the center of the anti-falling assembly body, the screw assembly body penetrates through the connecting through hole of the anti-falling assembly body in a sliding mode to be connected with the anti-falling assembly body in a sliding mode, and the screw assembly body comprises a screw head and a threaded screw rod; the nail head and the threaded nail rod are integrally formed, a limiting groove is formed in the connecting face of the nail head and the threaded nail rod, ratchet teeth are fixedly arranged on the inner ring face of the limiting groove, a connecting boss is fixedly arranged on the upper end face of the anti-falling assembly, and symmetrical elastic limiting blocks are fixedly arranged on the side end face of the connecting boss. The anti-falling assembly is preset in the screw locking hole, and when the anti-falling assembly is locked through the screw assembly, through cooperation of the ratchet teeth and the elastic limiting block, overturning prevention of the screw assembly is achieved, and it is guaranteed that the screw cannot fall off.

Description

Technical Field

[0001] The invention relates to the field of automated machinery, and in particular to an anti-dropping screw assembly and a use method thereof. Background Art

[0002] Screws are widely used fastening tools. However, the screws currently used do not have a self-locking function. After long-term use of components, the screws are likely to reverse under the action of various forces, causing looseness between components and affecting the reliability of fastening between components.

[0003] Although the existing screws have a self-locking structure, for example, the invention patent with patent application number 2008101870143 discloses a self-locking screw, in which two reverse buckles are arranged at the joint between the nail head and the nail body, and the rotation direction of the reverse buckles is opposite to the thread direction on the nail body. In this way, when the screw and the wood are tightened, the reverse buckles are tightly embedded in the wood to achieve the purpose of anti-reversal, thereby effectively improving the reliability of the connection between the components; although it has a self-locking function, the setting of the reverse buckles will affect the tightening of the screws when tightening, because the setting of the reverse buckles will damage the connection surface between the product and the reverse buckles, and the reverse buckles will press against the surface of the product, thereby failing to achieve the expected self-locking function, and the structure that damages the connection surface of the product will make it impossible to tighten the screws again after the screws are removed, and will also destroy the stability of the product structure. Summary of the invention

[0004] The main purpose of the invention is to provide an anti-falling screw assembly.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] An anti-falling screw assembly comprises a screw assembly and an anti-falling assembly, a connecting through hole is provided at the center of the anti-falling assembly, the screw assembly slides through the connecting through hole of the anti-falling assembly and is slidably connected to the anti-falling assembly, the screw assembly comprises a nail head and a threaded nail rod, the nail head and the threaded nail rod are integrally formed, and a limiting groove is provided on the connecting surface of the nail head and the threaded nail rod, ratchet teeth are fixedly provided on the inner ring surface of the limiting groove, a connecting boss is fixedly provided on the upper end surface of the anti-falling assembly, an elastic limiting block is fixedly provided on the side end surface of the connecting boss, and a limiting piece is provided on the other end surface of the anti-falling assembly.

[0007] Furthermore, the limiting member is one of a limiting boss, a limiting nail, a limiting block, and a limiting column.

[0008] Furthermore, the limiting member may also be a limiting groove.

[0009] Furthermore, the number of the elastic limit blocks is at least two, and the elastic limit blocks are arranged in an annular array on the outer annular surface of the connecting boss.

[0010] Furthermore, the setting direction of the elastic limit block is the same as the screwing direction of the threaded nail rod, and the direction of the ratchet teeth is opposite to the direction of the elastic limit block.

[0011] Furthermore, the limiting member and the anti-falling component are integrally formed.

[0012] Furthermore, the limiting member is slidably engaged with the anti-falling component.

[0013] Furthermore, the anti-falling component is made of hard plastic material.

[0014] Furthermore, a starting groove is fixedly provided on the upper surface of the nail head, and the starting groove includes one of a hexagonal groove, a cross groove, a plum blossom groove and a straight groove.

[0015] Furthermore, a method for using the anti-drop screw assembly comprises the steps of:

[0016] S1, a mounting groove is provided on the product, a threaded hole is provided at the center of the mounting groove, and limiting holes or limiting grooves are provided in the mounting groove on both sides or around the threaded hole, and a limiting boss may also be reserved;

[0017] S2, clamping the anti-dropping component in the installation groove, and clamping the anti-dropping component in the installation groove through one of the limiting holes, limiting grooves, and limiting bosses, so that the anti-dropping component does not rotate;

[0018] S3, pass the threaded nail rod through the anti-dropping component, screw it into the threaded hole, and lock the screw through the ratchet teeth and the elastic limit block.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention realizes the anti-falling component by presetting the anti-falling component on the screw locking hole, and when the screw component is locked, the ratchet teeth cooperate with the elastic limit block to realize the anti-flipping of the screw component, thereby ensuring that the screw will not fall off;

[0021] The anti-falling component is used to prevent rotation, while the screw can prevent the anti-falling component from moving along the length direction of the screw. The two can be interlocked to achieve an anti-falling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the present invention;

[0023] Figure 2 A bottom view of the screw assembly of the present invention;

[0024] Figure 3 A top view of the anti-falling component of the present invention;

[0025] Figure 4 It is a top view of Example 2 of the anti-falling component of the present invention.

[0026] Reference numerals

[0027] 1. Screw assembly; 11. Nail head; 12. Threaded nail rod; 13. Limiting groove; 14. Ratchet teeth; 2. Anti-falling assembly; 21. Connecting through hole; 22. Connecting boss; 23. Elastic limiting block; 24. Limiting piece. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] Example 1

[0030] See also Figure 1-3 As shown, an anti-falling screw assembly includes a screw assembly 1 and an anti-falling assembly 2, a connecting through hole 21 is opened at the center of the anti-falling assembly 2, the screw assembly 1 slides through the connecting through hole 21 of the anti-falling assembly 2 and is slidably connected to the anti-falling assembly 2, the screw assembly 1 includes a nail head 11 and a threaded nail rod 12, the nail head 11 and the threaded nail rod 12 are integrally formed, and a limiting groove 13 is opened on the connecting surface of the nail head 11 and the threaded nail rod 12, ratchet teeth 14 are fixedly opened on the inner ring surface of the limiting groove 13, a connecting boss 22 is fixedly provided on the upper end surface of the anti-falling assembly 2, an elastic limiting block 23 is fixedly provided on the side end surface of the connecting boss 22, and a limiting piece 24 is provided on the other end surface of the anti-falling assembly 2.

[0031] The limiting member 24 is one of a limiting boss, a limiting nail, a limiting block, and a limiting column.

[0032] The number of the elastic limiting blocks 23 is at least two, and the elastic limiting blocks 23 are arranged in an annular array on the outer annular surface of the connecting boss 22 .

[0033] By separately setting the anti-falling component 2 and the screw component 1, not only the self-locking function of the screw is achieved, but also the limiting piece 24 provided on the anti-falling component 2 can be set to a limiting nail shape, and a structure that can be twisted off under a certain torque is set at the connecting end of the limiting piece 24 and the anti-falling component 2. When it is necessary to replace or disassemble the product, the connection between the limiting piece 24 and the anti-falling component 2 can be twisted off by a certain torque, thereby realizing the removal of the screw. When reinstalling, it is only necessary to remove the remaining limiting piece 24 and replace an anti-falling component 2 to achieve the effect of re-locking.

[0034] Example 2

[0035] See also Figure 4 As shown, the structure of this embodiment is substantially the same as that of embodiment 1, and the difference lies in that the limiting member 24 can also be a limiting groove.

[0036] In the above embodiment, it should be noted that the setting direction of the elastic limit block 23 is the same as the screwing direction of the threaded screw rod 12 , and the direction of the ratchet teeth 14 is opposite to the direction of the elastic limit block 23 .

[0037] The limiting member 24 and the anti-falling component 2 are formed in one piece.

[0038] The limiting member 24 is slidably engaged with the anti-falling component 2 .

[0039] The anti-falling component 2 is made of hard plastic material.

[0040] A starting groove is fixedly formed on the upper surface of the nail head 11, and the starting groove includes one of a hexagonal groove, a cross groove, a plum blossom groove and a straight groove.

[0041] When in use, a mounting groove is pre-opened on the product, and a threaded hole is opened at the center of the mounting groove, and limiting holes or limiting grooves 13 are opened in the mounting groove on both sides or around the threaded hole, and a limiting boss can also be reserved;

[0042] The anti-drop component 2 is clamped in the installation groove, and the anti-drop component 2 is clamped in the installation groove through one of the limiting hole, the limiting groove 13, and the limiting boss, so that the anti-drop component 2 does not rotate;

[0043] The threaded nail rod 12 passes through the anti-dropping component 2 and is screwed into the threaded hole, and the screw is locked by the ratchet teeth 14 and the elastic limit block 23.

[0044] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. An anti-dropping screw assembly, comprising a screw assembly (1) and an anti-dropping assembly (2), wherein a connecting through hole (21) is provided at the center of the anti-dropping assembly (2), and the screw assembly (1) slides through the connecting through hole (21) of the anti-dropping assembly (2) to be slidably connected with the anti-dropping assembly (2), the screw assembly (1) comprises a nail head (11) and a threaded nail rod (12), and the nail head (11) and the threaded nail rod (12) are integrally formed, characterized in that: A limiting groove (13) is provided on the connection surface between the nail head (11) and the threaded nail rod (12), and ratchet teeth (14) are fixedly provided on the inner ring surface of the limiting groove (13). A connecting boss (22) is fixedly provided on the upper end surface of the anti-falling component (2), and an elastic limiting block (23) is fixedly provided on the side end surface of the connecting boss (22). A limiting piece (24) is provided on the other end surface of the anti-falling component (2).

2. The anti-drop screw assembly according to claim 1, characterized in that: The limiting member (24) is one of a limiting boss, a limiting nail, a limiting block and a limiting column.

3. The anti-drop screw assembly according to claim 1, characterized in that: The limiting member (24) may also be a limiting groove.

4. The anti-drop screw assembly according to claim 1, characterized in that: The number of the elastic limit blocks (23) is at least two, and the elastic limit blocks (23) are arranged in an annular array on the outer annular surface of the connecting boss (22).

5. The anti-drop screw assembly according to claim 1, characterized in that: The setting direction of the elastic limit block (23) is the same as the screwing direction of the threaded nail rod (12), and the direction of the ratchet teeth (14) is opposite to the direction of the elastic limit block (23).

6. The anti-drop screw assembly according to claim 1, characterized in that: The limiting member (24) and the anti-falling component (2) are integrally formed.

7. The anti-drop screw assembly according to claim 1, characterized in that: The limiting member (24) is slidably engaged with the anti-falling component (2).

8. The anti-drop screw assembly according to claim 1, characterized in that: The anti-falling component (2) is made of hard plastic material.

9. The anti-drop screw assembly according to claim 1, characterized in that: The upper surface of the nail head (11) is fixedly provided with a starting groove, which includes a hexagonal groove, a cross groove, a plum blossom groove and a straight groove.

10. A method for using an anti-drop screw assembly, characterized in that: Includes steps: S1, a mounting groove is provided on the product, a threaded hole is provided at the center of the mounting groove, and limiting holes or limiting grooves (13) are provided in the mounting groove on both sides or around the threaded hole, and a limiting boss may also be reserved; S2, clamping the anti-dropping component (2) in the installation groove, and clamping the anti-dropping component (2) in the installation groove through one of the limiting holes, the limiting grooves (13), and the limiting bosses, so that the anti-dropping component (2) does not rotate; S3, pass the threaded nail rod (12) through the anti-drop assembly (2), screw it into the threaded hole, and lock the screw through the ratchet teeth (14) and the elastic limit block (23).

Images