Anti-theft gasket and nut combined structure

Abstract

The utility model discloses an anti-theft gasket and nut combined structure which comprises a nut body and an anti-loose gasket, one end of the nut body is provided with an annular boss arranged in a protruding mode, and the center of the anti-loose gasket is provided with a gasket center hole matched with the annular boss. The lower side of the lock washer is provided with a circular truncated cone-shaped cavity which is gradually raised upwards from the outer ring to the center, the annular boss is circumferentially provided with at least two first opening grooves, the annular boss is divided into a plurality of clamping pieces by the first opening grooves, the lock washer is provided with a plurality of second opening grooves which are arranged around the first opening grooves, and the second opening grooves are communicated with the clamping pieces. One end of the open slot is communicated with the gasket center hole; the anti-theft nut further comprises an anti-theft sleeve arranged outside the nut body in a sleeving mode, and the outer surface of the anti-theft sleeve is cylindrical or hemispherical. The anti-loose anti-theft nut is good in anti-loose performance and anti-theft performance.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to the technical field of anti-theft type washer nut combined structure. Background Art

[0002] A nut is a nut that is screwed together with a bolt or a screw for fastening. It is a component that must be used in all manufacturing machinery. According to different materials, it is divided into several major types such as carbon steel, stainless steel, and non-ferrous metals. There are many types of nuts available. For example, the Chinese utility model patent with publication number CN203161779U proposes a nut with a combined anti-loosening washer, including a nut and an anti-loosening washer. An annular boss is provided on the inner ring of the lower wall of the nut, and the anti-loosening washer is sleeved on the annular boss. The anti-loosening washer includes a circular annular body with a truncated cone cross section, and an outer groove is provided on the outer peripheral wall of the body. The outer groove is annularly surrounding the outer peripheral wall of the body.

[0003] However, the problem with the above patented nut is that it has no anti-theft structure, the nut has no anti-theft performance, the nut, the anti-loosening of the nut mainly relies on the elastic force of the washer, there is no anti-loosening structure between the nut itself and the screw, and the anti-loosening performance between the nut and the screw is relatively general. Summary of the invention

[0004] The utility model aims to solve the problems in the prior art and provides an anti-theft washer and nut combination structure, which has good anti-loosening and anti-theft performances.

[0005] To achieve the above-mentioned purpose, the utility model proposes an anti-theft washer nut combination structure, including a nut body and an anti-loosening washer, one end of the nut body is provided with a protruding annular boss, the center of the anti-loosening washer is provided with a washer center hole adapted to the annular boss, the lower side of the anti-loosening washer is provided with a truncated cone-shaped cavity that gradually rises upward from the outer ring to the center, the annular boss is circumferentially provided with at least two first opening grooves, the first opening grooves divide the annular boss into a plurality of clips, the anti-loosening washer is provided with a plurality of second opening grooves arranged around the first opening grooves, and one end of the opening groove is connected with the center hole of the washer;

[0006] It also includes an anti-theft sleeve which is sleeved on the outside of the nut body, and the outer surface of the anti-theft sleeve is cylindrical or hemispherical.

[0007] Preferably, the anti-loosening gasket gradually increases in thickness from the outer ring to the center.

[0008] Preferably, the thickness of the anti-loosening washer is greater than or equal to the height of the annular boss.

[0009] Preferably, the surface of the annular boss is provided with a concave annular groove, the center hole of the gasket is provided with a convex block adapted to the annular groove, and the convex block is clamped in the annular groove.

[0010] Preferably, the surface of the nut body is provided with a ratchet bar arranged along its axial direction, the anti-theft sleeve is provided with a cavity adapted to the nut body, and the cavity is provided with a pawl adapted to the ratchet bar.

[0011] Preferably, the first opening groove extends to the nut body.

[0012] Preferably, the anti-theft sleeve is provided with a sleeve through hole adapted to the screw hole of the nut body at one end away from the nut body.

[0013] The utility model discloses an anti-theft washer nut combination structure with beneficial effects: the utility model divides the annular boss on the lower side of the nut body into multiple clips, and arranges an anti-loosening washer on the annular boss, and the anti-loosening washer is arranged to be an upwardly arched truncated cone shape. During the tightening process of the nut body, it can squeeze the anti-loosening washer, so that the truncated cone-shaped cavity of the anti-loosening washer gradually deforms downward. During this process, the center hole of the washer gradually shrinks, thereby squeezing the annular boss, causing the clips of the annular boss to shrink inward, thereby squeezing the screw rod and holding the screw rod, achieving anti-loosening between the screw rod and the screw rod, improving the stability of the connection, and preventing it from loosening. A smooth anti-theft sleeve is arranged to cover the nut body, so that the nut body cannot be unscrewed by a wrench, thereby improving the anti-theft performance.

[0014] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a main structural schematic diagram of an anti-theft washer and nut combination structure.

[0016] Figure 2 The utility model is a schematic diagram of the main structure of an anti-theft washer and nut combination structure after removing the anti-theft cover.

[0017] Figure 3 yes Figure 2 Schematic diagram of the mid-section structure.

[0018] Figure 4 It is a schematic diagram of the top view of the nut body and the anti-loosening washer.

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the anti-theft cover.

[0020] in:

[0021] 1- nut body; 2- anti-loosening washer; 3- anti-theft sleeve; 11- annular boss; 12- ratchet bar; 21- washer center hole; 22- second opening groove; 23- protrusion; 31- ratchet pawl; 32- sleeve body through hole; 111- first opening groove; 112- clip; 113- annular groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0023] In the description of the present utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. 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 "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0026] See also Figure 1-Figure 4 The utility model discloses an anti-theft washer nut combination structure, comprising a nut body 1 and an anti-loosening washer 2. The lower end of the nut body 1 is provided with a protruding annular boss 11. The center of the anti-loosening washer 2 is provided with a washer center hole 21 adapted to the annular boss 11. The lower side of the anti-loosening washer 2 is provided with a truncated cone-shaped chamber which gradually bulges upward from the outer ring to the center. The anti-loosening washer 2 is stamped from sheet metal so that its middle part arches upward and has a certain deformation performance. The annular boss 11 is circumferentially provided with four first opening grooves 111, and the first opening grooves 111 divide the annular boss 11 into a plurality of clips 112. The anti-loosening washer 2 is provided with four second opening grooves 22 arranged around the first opening grooves 111, and one end of the opening groove 111 is connected to the washer center hole 21. In this embodiment, the annular boss 11 on the lower side of the nut body 1 is divided into a plurality of clips 112, and an anti-loosening washer 2 is arranged on the annular boss 11, and the anti-loosening washer 2 is arranged to be an upwardly arched truncated cone. During the tightening process of the nut body 1, it can squeeze the anti-loosening washer 2, so that the truncated cone-shaped chamber of the anti-loosening washer 2 gradually deforms downward. During this process, the center hole 21 of the washer gradually shrinks, thereby squeezing the annular boss 11, causing the clips 112 of the annular boss 11 to shrink inward, thereby squeezing the screw rod, holding the screw rod, achieving anti-loosening between the screw rod, improving the stability of the connection, and preventing it from loosening.

[0027] See also Figure 1 and Figure 5 , and also includes an anti-theft sleeve 3 sleeved outside the nut body 1, and the outer surface of the anti-theft sleeve 3 is hemispherical. The surface of the anti-theft sleeve 3 is smooth and can cover the nut body 1, so that the nut body 1 cannot be unscrewed by a wrench, thereby improving the anti-theft performance.

[0028] See also Figure 3 The thickness of the anti-loosening washer 2 is greater than the height of the annular boss 11. This prevents the annular boss 11 from contacting the workpiece surface and affecting the clamping of the clamping piece 112.

[0029] See also Figure 3The surface of the annular boss 11 is provided with an annular groove 113 which is recessed, and the center hole 21 of the washer is provided with a convex block 23 which is adapted to the annular groove 113, and the convex block 23 is clamped in the annular groove 113. The convex block 23 cooperates with the annular groove 113 to fix the anti-loosening washer 2 on the annular boss 11 to prevent it from falling off. Embodiment 2

[0030] See also Figure 2 and Figure 5 On the basis of the first embodiment, the surface of the nut body 1 is provided with a ratchet bar 12 arranged along the axial direction thereof, the anti-theft sleeve 3 is provided with a cavity adapted to the nut body 1, and the cavity is provided with a ratchet 31 adapted to the ratchet bar 12. The ratchet 31 cooperates with the ratchet bar 12 to prevent the anti-theft sleeve 3 from being separated from the surface of the nut body 1, and the anti-theft sleeve 3 cannot be removed once it is put on, thereby improving the anti-theft performance.

[0031] See also Figure 2 The first opening groove 111 extends to the nut body 1 to improve the deformation performance of the clip 112.

[0032] See also Figure 5 The end of the anti-theft sleeve 3 away from the nut body 1 is provided with a sleeve through hole 32 adapted to the screw hole of the nut body 1 to facilitate the passage of the bolt.

[0033] Working process of this utility model:

[0034] The utility model discloses an anti-theft washer nut combination structure. During operation, the anti-loosening washer 2 is placed on a side close to a workpiece. During the tightening process of the nut body 1, the anti-loosening washer 2 can be squeezed to make the truncated cone-shaped chamber of the anti-loosening washer 2 gradually deform downward. During this process, the center hole 21 of the washer gradually shrinks, thereby squeezing the annular boss 11, causing the clips 112 of the annular boss 11 to shrink inward, thereby squeezing the screw rod and holding the screw rod to prevent loosening. After the nut body 1 is tightened, the anti-theft sleeve 3 is sleeved on the nut body 1. The surface of the anti-theft sleeve 3 is smooth and can cover the nut body 1, so that the nut body 1 cannot be unscrewed by a wrench.

[0035] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The electric slide rail slide, cylinder, welding machine, electric telescopic rod and internal components of the controller all adopt conventional models in the prior art, and their internal structures belong to the prior art structure. Workers can complete normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the prior art, and no specific description is given here.

[0036] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. An anti-theft washer nut combination structure, comprising a nut body (1) and an anti-loosening washer (2), characterized in that: A protruding annular boss (11) is provided at one end of the nut body (1); a washer center hole (21) adapted to the annular boss (11) is provided at the center of the anti-loosening washer (2); a truncated cone-shaped chamber which gradually rises upward from the outer ring to the center is provided at the lower side of the anti-loosening washer (2); at least two first opening grooves (111) are provided in the circumferential direction of the annular boss (11); the first opening grooves (111) separate the annular boss (11) into a plurality of clips (112); a plurality of second opening grooves (22) arranged around the first opening grooves (111) are provided on the anti-loosening washer (2); one end of the opening groove (111) is communicated with the washer center hole (21); It also comprises an anti-theft sleeve (3) sleeved on the outside of the nut body (1), and the outer surface of the anti-theft sleeve (3) is cylindrical or hemispherical.

2. The anti-theft washer and nut combination structure according to claim 1, characterized in that: The thickness of the anti-loosening washer (2) gradually increases from the outer ring to the center.

3. The anti-theft washer and nut combination structure according to claim 1, characterized in that: The thickness of the anti-loosening washer (2) is greater than or equal to the height of the annular boss (11).

4. The anti-theft washer nut combination structure according to claim 1, characterized in that: The surface of the annular boss (11) is provided with an annular groove (113) which is recessed, and the center hole (21) of the gasket is provided with a convex block (23) which is adapted to the annular groove (113), and the convex block (23) is clamped in the annular groove (113).

5. The anti-theft washer and nut combination structure according to claim 1, characterized in that: The surface of the nut body (1) is provided with a ratchet bar (12) arranged along its axial direction, the anti-theft sleeve (3) is provided with a cavity adapted to the nut body (1), and the cavity is provided with a ratchet pawl (31) adapted to the ratchet bar (12).

6. The anti-theft washer and nut combination structure according to claim 1, characterized in that: The first opening slot (111) extends to the nut body (1).

7. The anti-theft washer and nut assembly structure according to claim 1, characterized in that: An end of the anti-theft sleeve (3) away from the nut body (1) is provided with a sleeve through hole (32) adapted to the screw hole of the nut body (1).

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