Self-tapping locking screw with inner chamfer and outer chamfer

Abstract

The utility model discloses a self-tapping locking screw with inner and outer chamfers, and belongs to the technical field of screws. Comprising an inner and outer chamfering screw head, a self-tapping screw head is fixedly arranged at the bottom end of the inner and outer chamfering screw head, the self-tapping screw head is used for being tapped into a bottom hole, a supporting ring plate is rotationally arranged on the outer side of the inner and outer chamfering screw head, and the supporting ring plate is used for being matched with a locking assembly for use. After the self-tapping screw head is fixedly screwed into the bottom hole to fix an object, the supporting ring plate can make contact with the top end of the object, the supporting ring plate is prevented from rotating due to the fact that the anti-skid grains at the bottom end of the supporting ring plate achieve the anti-skid effect, and the locking assembly is matched with the locking clamping groove formed in the top end of the supporting ring plate, so that the self-tapping screw head cannot rotate reversely; therefore, the effect of locking the self-tapping screw head is achieved, and a better fixing effect on an object is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of screws, and more specifically, to a self-tapping locking screw with inner and outer chamfers. Background Art

[0002] A locking screw is a specially designed screw whose main function is to provide additional tightening force between two or more parts of a connection.

[0003] In the related art, the screw is used with a screw rod and a nut. For example, the prior art patent with publication number CN211550205U provides a self-tapping locking screw. The device can screw the screw into a hole to fix an object through the setting of a screw rod, a nut and a tail tip.

[0004] Although the above-mentioned prior art solution can achieve the effect of fixing an object through the setting of the screw, nut and tail tip, it still has the following defects: if it is affected by external factors, the screw is easy to loosen, such as vibration, resulting in the screw being unable to achieve the effect of tightening the object, so that the object may be damaged.

[0005] In view of this, we propose a self-threading locking screw with inner and outer chamfers. Utility Model Content

[0006] The utility model provides a self-tapping locking screw with inner and outer chamfers, which solves the problem that the screw is easy to loosen when affected by external factors, such as vibration, resulting in the screw being unable to achieve the effect of tightening the object, causing the object to be damaged.

[0007] In order to solve the above problems, the embodiment of the present application provides a self-tapping locking screw with internal and external chamfers, including an internal and external chamfered screw head, a self-tapping screw head is fixedly provided at the bottom end of the internal and external chamfered screw head, and the self-tapping screw head is used to tap into the bottom hole;

[0008] A support ring plate, the support ring plate is rotatably arranged on the outside of the inner and outer chamfered screw heads, and the support ring plate is used in conjunction with the locking assembly;

[0009] The locking assembly is arranged at the top end of the supporting ring plate, and a plurality of the locking assemblies are provided. The locking assembly is used to cooperate with the supporting ring plate to lock the self-tapping screw head.

[0010] Furthermore, the outer side of the support ring plate is fixedly provided with a stabilizing side frame, the inner side of the stabilizing side frame is fixedly provided with an outer fixing ring, the inner side of the outer fixing ring is provided with an inner fixing ring, the inner fixing ring is fixedly provided with the outer side of the inner and outer chamfered screw heads, the inner fixing ring is fixedly provided with the bottom end of the stabilizing side frame, and an unlocking plate frame is provided between the outer fixing ring and the inner fixing ring, and a plurality of locking grooves are provided on the top of the support ring plate, and the locking grooves are provided corresponding to the locking components. Through the setting of the unlocking plate frame, when the self-tapping screw head needs to be removed, the unlocking plate frame is rotated so that the locking component leaves the cooperation with the locking groove, and then the inner and outer chamfered screw heads are rotated so that the self-tapping screw head can rotate in the opposite direction, and the support ring plate is driven to rise and leave the contact with the object to release the unlocking plate frame, and the screw as a whole can be directly rotated in the opposite direction, which is convenient and simple to use.

[0011] Furthermore, the locking assembly includes a fixed hanger plate, one side of the fixed hanger plate is rotatably provided with a locking claw, the other side of the fixed hanger plate is fixedly provided with a torsion spring, the locking claw is fixedly connected to the torsion spring through a short rod, the locking claw is engaged with the inner side of the locking slot, and the locking assembly is used to lock the self-tapping screw head.

[0012] Furthermore, the fixed hanging plate is fixedly arranged at the bottom end of the inner fixed ring, the short rod passes through and is rotatably arranged on one side of the fixed hanging plate, an unlocking shift plate is slidably arranged on one side of the fixed hanging plate, a return spring is fixedly arranged on one side of the unlocking shift plate, the return spring is fixedly arranged on the inner side of the fixed hanging plate, a limit plate is fixedly arranged at the bottom end of the unlocking shift plate, and the limit plate is arranged to limit the reverse rotation of the locking claw.

[0013] Furthermore, the unlocking shift plate is slidably arranged between the outer fixing ring and the inner fixing ring, and the unlocking shift plate is fixedly arranged at the bottom end of the unlocking plate frame. Rotating the unlocking shift plate will drive the unlocking shift plate to move, thereby achieving the unlocking effect.

[0014] Furthermore, the locking components are evenly distributed on the bottom end of the unlocking plate frame in a circumferential shape.

[0015] Furthermore, the bottom end of the support ring plate is provided with anti-skid grooves, and the anti-skid grooves at the bottom end thereof achieve an anti-skid effect, thereby preventing the support ring plate from rotating when in contact with an object.

[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0017] 1. The present application cooperates with the support ring plate and the locking assembly. When the self-tapping screw head is fixedly screwed into the bottom hole to fix the object, the support ring plate will contact the top of the object, and the anti-slip pattern at the bottom thereof will achieve an anti-slip effect, preventing the support ring plate from rotating. The locking assembly cooperates with the locking slot at the top of the support ring plate, so that the self-tapping screw head cannot rotate in the opposite direction, thereby achieving the effect of locking the self-tapping screw head and achieving a better fixing effect on the object.

[0018] 2. The present application sets up an unlocking plate frame. When the self-tapping screw head needs to be removed, the unlocking plate frame is rotated to make the locking assembly leave the cooperation with the locking slot, and then the inner and outer chamfered screw heads are rotated to make the self-tapping screw head rotate in the opposite direction, and the supporting ring plate is driven to rise and leave the contact with the object to release the unlocking plate frame, and the screw can be directly rotated in the opposite direction as a whole. It is convenient and simple to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a self-tapping locking screw with internal and external chamfers disclosed in a preferred embodiment of the present application;

[0020] Figure 2 A schematic diagram of the upper and lower axonometric structure of a self-tapping locking screw with internal and external chamfers disclosed in a preferred embodiment of the present application;

[0021] Figure 3 It is a schematic diagram of the disassembly structure of the locking assembly in a self-tapping locking screw with inner and outer chamfers disclosed in a preferred embodiment of the present application, and the stabilizing side frame, the outer fixing ring, the inner fixing ring and the unlocking plate frame;

[0022] Figure 4 This is a schematic diagram of a partially disassembled structure of a self-tapping locking screw with internal and external chamfers disclosed in a preferred embodiment of the present application;

[0023] Explanation of the numbers in the figure: 1. Internal and external chamfered screw head; 101. Self-tapping screw head; 2. Support ring plate; 201. Stabilizing side frame; 2011. Locking slot; 202. External fixing ring; 203. Internal fixing ring; 204. Unlocking plate frame; 3. Locking assembly; 301. Fixing hanging plate; 302. Locking claw; 303. Torsion spring; 304. Unlocking shift plate; 305. Reset spring. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings.

[0025] Reference Figure 1 and Figure 2 A self-tapping locking screw with internal and external chamfers, comprising an internal and external chamfered screw head 1, a self-tapping screw head 101 is fixedly arranged at the bottom end of the internal and external chamfered screw head 1, and the self-tapping screw head 101 is used to tap into a bottom hole;

[0026] A support ring plate 2, which is rotatably arranged on the outside of the inner and outer chamfered screw heads 1, and is used in conjunction with the locking assembly 3;

[0027] The locking assembly 3 is arranged at the top end of the supporting ring plate 2 . A plurality of locking assemblies 3 are provided. The locking assembly 3 is used to cooperate with the supporting ring plate 2 to lock the self-tapping screw head 101 .

[0028] When the self-tapping screw head 101 is fixedly screwed into the bottom hole to fix the object, the support ring plate 2 will contact the top of the object, and the anti-slip pattern at its bottom will achieve an anti-slip effect to prevent the support ring plate 2 from rotating, and the locking component 3 cooperates with the locking slot 2011 opened at the top of the support ring plate 2, so that the self-tapping screw head 101 cannot rotate in the opposite direction, thereby achieving the effect of locking the self-tapping screw head 101 and achieving a better fixing effect on the object.

[0029] Reference Figure 2 , Figure 3 and Figure 4 A stabilizing side frame 201 is fixedly provided on the outer side of the supporting ring plate 2, an outer fixing ring 202 is fixedly provided on the inner side of the stabilizing side frame 201, an inner fixing ring 203 is provided on the inner side of the outer fixing ring 202, the inner fixing ring 203 is fixedly provided on the outer side of the inner and outer chamfered screw heads 1, the inner fixing ring 203 is fixedly provided at the bottom end of the stabilizing side frame 201, an unlocking plate frame 204 is provided between the outer fixing ring 202 and the inner fixing ring 203, a plurality of locking grooves 2011 are provided on the top end of the supporting ring plate 2, the locking grooves 2011 are provided corresponding to the locking components 3, the locking components 3 are evenly distributed in a circle at the bottom end of the unlocking plate frame 204, and the bottom end of the supporting ring plate 2 is provided with anti-slip grooves.

[0030] When the supporting ring plate 2 contacts with an object, the anti-slip grooves arranged at its bottom end will gradually stop the rotation of the supporting ring plate 2, and at this time the self-tapping screw head 101 can continue to rotate a certain number of times, and the self-tapping screw head 101 will drive the inner fixing ring 203 to rotate, thereby driving the locking assembly 3 to rotate, and at this time the unlocking plate frame 204 will also rotate together, thereby achieving the effect of locking the self-tapping screw head 101. When the self-tapping screw head 101 needs to be unlocked and reversed, the unlocking plate frame 204 is rotated, and the unlocking plate frame 204 drives the unlocking moving plate 304 and the limit plate to move, so that the locking claw 302 can rotate freely to disengage the engaged state. When the supporting ring plate 2 is raised, the unlocking plate frame 204 is released, and the supporting ring plate 2 is no longer in contact with the object, and only the self-tapping screw head 101 is left in the bottom hole. The screw can be directly rotated as a whole, which is simple and convenient to use.

[0031] Reference Figure 2 , Figure 3 and Figure 4The locking assembly 3 includes a fixed hanging plate 301, a locking claw 302 is rotatably provided on one side of the fixed hanging plate 301, and a torsion spring 303 is fixedly provided on the other side of the fixed hanging plate 301. The locking claw 302 is fixedly connected to the torsion spring 303 through a short rod. The locking claw 302 is engaged with the inner side of the locking slot 2011. The fixed hanging plate 301 is fixedly provided at the bottom end of the inner fixing ring 203. The short rod penetrates and is rotatably provided on one side of the fixed hanging plate 301. An unlocking plate 304 is slidably provided on one side, a return spring 305 is fixedly provided on one side of the unlocking plate 304, the return spring 305 is fixedly provided on the inner side of the fixed hanging plate 301, a limit plate is fixedly provided on the bottom end of the unlocking plate 304, the unlocking plate 304 is slidably provided between the outer fixed ring 202 and the inner fixed ring 203, the unlocking plate 304 is fixedly provided at the bottom end of the unlocking plate frame 204, and the locking assembly 3 is evenly distributed in a circle at the bottom end of the unlocking plate frame 204.

[0032] The self-tapping screw head 101 will drive the inner fixing ring 203 to rotate. At this time, the locking component 3 will be driven by the inner fixing ring 203 to rotate and reach the next locking slot 2011 from the previous locking slot 2011. The locking claw 302 in the locking component 3 will contract the torsion spring 303 through the short rod. When the locking claw 302 enters the next locking slot 2011, the locking claw 302 will be stuck in the locking slot 2011 through the resilience of the torsion spring 303, thereby achieving the effect of locking the self-tapping screw head 101, preventing 1011 from reversing, and reducing the impact of external vibration on the use of the self-tapping screw head 101.

[0033] Working principle: Align the self-tapping screw head 101 with the bottom hole, and then rotate the inner and outer chamfered screw head 1 so that the self-tapping screw head 101 can be screwed into the bottom hole, and the screw as a whole will rotate together. When the supporting ring plate 2 contacts with an object, the anti-slip grooves provided on its bottom end will gradually stop the rotation of the supporting ring plate 2, and at this time the self-tapping screw head 101 can continue to rotate a certain number of times. The self-tapping screw head 101 will drive the inner fixing ring 203 to rotate. At this time, the locking assembly 3 will be driven by the inner fixing ring 203 to rotate and reach the next locking slot 2011 from the previous locking slot 2011. The locking claw 302 in the locking assembly 3 will cause the torsion spring 303 to contract through the short rod. When the locking claw 302 enters the next locking slot 2011, the locking claw 302 will be locked into the lock through the resilience of the torsion spring 303. The locking plate 202 is then released and the locking claw 302 is released, so that the locking claw 302 can be freely reversed and leave the locking slot 2011. When the support ring plate 2 is raised, the unlocking plate frame 204 is released. At this time, the support ring plate 2 is not in contact with the object, and only the self-tapping screw head 101 is left in the bottom hole. The screw can be directly rotated as a whole, which is simple and convenient to use.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A self-tapping locking screw with internal and external chamfers, characterized in that: Include: An internally and externally chamfered screw head (1), wherein a self-tapping screw head (101) is fixedly provided at the bottom end of the internally and externally chamfered screw head (1), and the self-tapping screw head (101) is used to tap into a bottom hole; A support ring plate (2), the support ring plate (2) being rotatably arranged on the outside of the inner and outer chamfered screw heads (1), the support ring plate (2) being used in conjunction with a locking assembly (3); The locking assembly (3) is arranged at the top end of the supporting ring plate (2), and a plurality of the locking assemblies (3) are provided. The locking assembly (3) is used to cooperate with the supporting ring plate (2) to lock the self-tapping screw head (101).

2. The self-tapping locking screw with internal and external chamfers according to claim 1, characterized in that: A stabilizing side frame (201) is fixedly arranged on the outer side of the support ring plate (2), an outer fixing ring (202) is fixedly arranged on the inner side of the stabilizing side frame (201), an inner fixing ring (203) is arranged on the inner side of the outer fixing ring (202), the inner fixing ring (203) is fixedly arranged on the outer side of the inner and outer chamfered screw heads (1), the inner fixing ring (203) is fixedly arranged at the bottom end of the stabilizing side frame (201), an unlocking plate frame (204) is arranged between the outer fixing ring (202) and the inner fixing ring (203), and a plurality of locking slots (2011) are opened at the top end of the support ring plate (2), and the locking slots (2011) are arranged corresponding to the locking assembly (3).

3. The self-tapping locking screw with internal and external chamfers according to claim 1, characterized in that: The locking assembly (3) comprises a fixed hanging plate (301), one side of the fixed hanging plate (301) is rotatably provided with a locking claw (302), the other side of the fixed hanging plate (301) is fixedly provided with a torsion spring (303), the locking claw (302) is fixedly connected to the torsion spring (303) via a short rod, and the locking claw (302) is engaged with the inner side of the locking slot (2011).

4. The self-tapping locking screw with internal and external chamfers according to claim 3, characterized in that: The fixed hanging plate (301) is fixedly arranged at the bottom end of the inner fixed ring (203); the short rod penetrates and is rotatably arranged at one side of the fixed hanging plate (301); an unlocking plate (304) is slidably arranged at one side of the fixed hanging plate (301); a return spring (305) is fixedly arranged at one side of the unlocking plate (304); the return spring (305) is fixedly arranged at the inner side of the fixed hanging plate (301); and a limiting plate is fixedly arranged at the bottom end of the unlocking plate (304).

5. The self-tapping locking screw with internal and external chamfers according to claim 4, characterized in that: The unlocking shift plate (304) is slidably disposed between the outer fixing ring (202) and the inner fixing ring (203), and the unlocking shift plate (304) is fixedly disposed at the bottom end of the unlocking plate frame (204).

6. The self-tapping locking screw with internal and external chamfers according to claim 1, characterized in that: The locking components (3) are evenly distributed on the bottom end of the unlocking plate frame (204) in a circumferential manner.

7. The self-tapping locking screw with internal and external chamfers according to claim 1, characterized in that: The bottom end of the supporting ring plate (2) is provided with anti-slip grooves.

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