Anti-skid expansion riveting nut with anti-skid structure

Abstract

The utility model relates to the technical field of expansion riveting nuts, and discloses an anti-skidding expansion riveting nut with an anti-skidding structure, which comprises an assembly main body, an anti-skidding gasket is assembled on the outer side of the assembly main body, the assembly main body comprises an expandable sleeve, and the bottom end of the expandable sleeve is fixedly connected with an internal thread bushing. The anti-skid gasket comprises a set of arc-shaped assembly rings connected to the upper end of the outer side of the expandable sleeve in a sliding and sleeving mode, and a plurality of notch grooves are formed in the annular outer side wall of the expandable sleeve at equal angles. According to the utility model, the optimized anti-skid structure design is adopted, the anti-skid gasket is arranged at the upper end of the expandable sleeve, and the anti-skid coating, namely the polytetrafluoroethylene coating, is arranged on the outer side of the anti-skid gasket, so that not only can the friction force be increased, but also a certain anti-corrosion effect can be achieved; and the top end of the anti-skid gasket is fixedly connected with a plurality of anti-skid convex blocks at equal angles, so that the friction force between the nut and a connected piece is improved, and the anti-skid effect of the whole anti-skid expansion riveting nut is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the expansion nut, specifically is a anti -skidding expansion nut with anti -skidding structure. BACKGROUND

[0002] Expansion nut is a fastener applied to sheet metal, sheet, case, cabinet. In the riveting process, first, the plate hole is opened on the sheet, and the expansion nut is put into the plate hole for assembly, the anti -skidding expansion nut is a kind of nut on the basis of expansion nut improvement, specially designed for the nut of anti -skid performance, it usually adopts specific structure design and technology, sets up anti -skid measure, such as knurl, tooth shape line, anti -skid coating etc. on the surface of nut or the part contacted with the connected piece.

[0003] The existing anti -skidding expansion nut still has the following problems when using: its anti -skid effect is limited, although there is anti -skid structure, but in some scenes of violent vibration or greater stress, possibly still cannot completely avoid the nut loosening, leading to the stability of connection to decline, in addition, in order to realize the anti -skid function, the structure of nut can be relatively complex, this will make the installation process become more difficult, increase installation time and cost. UTILITY MODEL CONTENT

[0004] (I) the technical problem solved.

[0005] In view of the deficiencies of prior art, the utility model provides an anti -skid expansion nut with anti -skid structure, solves the problems proposed in background art.

[0006] (II) technical scheme.

[0007] To achieve the above object, the utility model provides the following technical scheme: an anti -skid expansion nut with anti -skid structure, including assembly main part, the assembly main part outside assembly has anti -skid washer, the assembly main part includes an inflatable sleeve, the inflatable sleeve bottom fixedly connected with internal thread sleeve, the anti -skid washer includes a group of arc assembly ring slidingly sleeved on the outer side of the inflatable sleeve upper end, the inflatable sleeve annular outer side wall is equally angular and is provided with a plurality of cutout grooves, the internal thread sleeve bottom end face is equally angular and is provided with a plurality of lightening holes.

[0008] As a further scheme of the utility model: a group of the arc assembly ring is two and is symmetrically arranged, the arc assembly ring outside is provided with anti -skid coating, the arc assembly ring bottom is equally angular and is provided with sawtooth groove, the arc assembly ring top is equally angular and is fixedly connected with a plurality of anti -skid protrusions.

[0009] As a further improvement of this utility model: a chamfer is provided on the outer side of the bottom end of the internal threaded sleeve, the outer diameter of the expandable sleeve is larger than the outer diameter of the internal threaded sleeve, and a chamfer is provided at the junction of the expandable sleeve and the internal threaded sleeve.

[0010] As a further improvement of this utility model: an arc-shaped groove is provided in the middle of the two arc-shaped assembly rings at opposite ends, and a threaded hole is provided on the front and rear sides of the two arc-shaped grooves at opposite ends, and the same locking screw is threaded into the two threaded holes on the front or rear sides.

[0011] As a further improvement of this utility model: the top end face of the expandable sleeve is flush with multiple anti-slip protrusions, and the top end face of the expandable sleeve is provided with multiple auxiliary end face anti-slip grooves at equal angles.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, by adopting an optimized anti-slip structure design, an anti-slip washer is provided at the upper end of the expandable sleeve, and an anti-slip coating, namely polytetrafluoroethylene coating, is provided on the outside. This can increase the friction and play a certain role in corrosion prevention. In addition, the bottom end of the anti-slip washer is provided with a serrated groove at the same angle, and the top end of the anti-slip washer is fixedly connected with multiple anti-slip protrusions at the same angle to improve the friction between the nut and the connected parts, thereby enhancing the anti-slip effect of the overall anti-slip expansion nut.

[0014] 2. In this utility model, by adopting an improved installation structure design, the outer diameter of the expandable sleeve is larger than that of the internal threaded sleeve, and chamfers are provided on the outer side of the bottom end of the internal threaded sleeve and at the junction of the expandable sleeve and the internal threaded sleeve, making it easier to align and insert during installation and reducing installation difficulty. In addition, the anti-slip washer adopts a combined structure design, which can be disassembled and separated by removing the locking screw, which is convenient for maintenance and replacement. Attached Figure Description

[0015] Figure 1 This is a perspective view of the entire utility model;

[0016] Figure 2 This is a three-dimensional view of the anti-slip washer of this utility model;

[0017] Figure 3 The three-dimensional assembly body of this utility model Figure 1 ;

[0018] Figure 4 The three-dimensional assembly body of this utility model Figure 2 .

[0019] In the diagram: 1. Assembly body; 2. Anti-slip washer; 11. Expandable sleeve; 12. Internal threaded sleeve; 13. Cut groove; 14. Auxiliary end face anti-slip groove; 15. Weight reduction hole; 21. Arc-shaped assembly ring; 22. Arc-shaped groove; 23. Anti-slip protrusion; 24. Threaded hole; 25. Serrated groove; 26. Locking screw. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figures 1-4 In this embodiment of the present invention, an anti-slip expansion nut with an anti-slip structure includes an assembly body 1, an anti-slip washer 2 is assembled on the outside of the assembly body 1, the assembly body 1 includes an expandable sleeve 11, an internal threaded sleeve 12 is fixedly connected to the bottom end of the expandable sleeve 11, the anti-slip washer 2 includes a set of arc-shaped assembly rings 21 that are slidably sleeved on the upper end of the outer side of the expandable sleeve 11, the annular outer wall of the expandable sleeve 11 is provided with a plurality of cut grooves 13 at equal angles, and the bottom end face of the internal threaded sleeve 12 is provided with a plurality of weight-reducing holes 15 at equal angles.

[0024] A set of two symmetrical arc-shaped assembly rings 21 are provided. The outer side of the arc-shaped assembly rings 21 is provided with an anti-slip coating. The bottom end of the arc-shaped assembly rings 21 is provided with a serrated groove 25 at equal angles. The top end of the arc-shaped assembly rings 21 is fixedly connected with multiple anti-slip protrusions 23 at equal angles. The whole adopts an optimized anti-slip structure design. An anti-slip washer 2 is provided at the upper end of the expandable sleeve 11. The outer side of the washer is provided with an anti-slip coating, namely a polytetrafluoroethylene coating, which can increase friction and play a certain role in corrosion protection. In addition, the bottom end of the anti-slip washer 2 is provided with a serrated groove 25 at equal angles, and the top end of the anti-slip washer 2 is fixedly connected with multiple anti-slip protrusions 23 at equal angles to improve the friction between the nut and the connected parts, thereby enhancing the anti-slip effect of the overall anti-slip expansion nut.

[0025] The outer side of the bottom end of the internal threaded sleeve 12 is chamfered. The outer diameter of the expandable sleeve 11 is larger than the outer diameter of the internal threaded sleeve 12. The joint between the expandable sleeve 11 and the internal threaded sleeve 12 is chamfered. The overall structure adopts an improved installation design. The outer diameter of the expandable sleeve 11 is larger than that of the internal threaded sleeve 12. The outer side of the bottom end of the internal threaded sleeve 12 and the joint between the expandable sleeve 11 and the internal threaded sleeve 12 are both chamfered, making it easier to align and insert during installation and reducing installation difficulty.

[0026] Two arc-shaped assembly rings 21 are provided with an arc-shaped groove 22 at the middle of one end of each other. A threaded hole 24 is provided on each of the front and rear sides of the two arc-shaped grooves 22 facing each other. The same locking screw 26 is threaded into the two threaded holes 24 on the front or rear side. The anti-slip washer 2 adopts a combined structure design and can be disassembled and separated by removing the locking screw 26, which is convenient for maintenance and replacement.

[0027] The top end face of the expandable sleeve 11 is flush with multiple anti-slip protrusions 23. The top end face of the expandable sleeve 11 is provided with multiple auxiliary end face anti-slip grooves 14 at equal angles. The multiple auxiliary end face anti-slip grooves 14 can play an auxiliary anti-slip role on the upper end face of the overall anti-slip rivet nut body.

[0028] The working principle of this utility model is as follows: During the riveting process, a plate hole is pre-drilled on the thin plate, the expansion nut is placed into the plate hole, and then the part without internal threads, i.e., the expansion sleeve 11, is expanded from the inside out using a jig, causing part of the nut material to undergo plastic deformation, thereby forming a tight fit with the base material and realizing a reliable connection between the two parts. The internal thread sleeve 12 of the expansion nut forms an internal thread structure on the thin plate that can be effectively fixed.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A non-slip expansion nut with a non-slip structure, comprising an assembly body (1), wherein a non-slip washer (2) is assembled on the outside of the assembly body (1); Its features are: The assembly body (1) includes an expandable sleeve (11), and an internal threaded sleeve (12) is fixedly connected to the bottom end of the expandable sleeve (11). The anti-slip washer (2) includes a set of arc-shaped assembly rings (21) that are slidably sleeved on the upper side of the expandable sleeve (11), and the set of arc-shaped assembly rings (21) consists of two symmetrically arranged rings. The outer side of the arc-shaped assembly ring (21) is provided with an anti-slip coating. The bottom end of the arc-shaped assembly ring (21) is provided with a serrated groove (25) at an equal angle. The top end of the arc-shaped assembly ring (21) is fixedly connected with multiple anti-slip protrusions (23) at an equal angle. The bottom outer side of the internal threaded sleeve (12) is chamfered, the outer diameter of the expandable sleeve (11) is larger than the outer diameter of the internal threaded sleeve (12), and the joint between the expandable sleeve (11) and the internal threaded sleeve (12) is chamfered.

2. The anti-slip expansion nut with an anti-slip structure according to claim 1, characterized in that: Each of the two arc-shaped assembly rings (21) has an arc-shaped groove (22) at the middle of one of their opposite ends.

3. The anti-slip expansion nut with an anti-slip structure according to claim 2, characterized in that: Each of the two arc-shaped grooves (22) has a threaded hole (24) on its front and rear sides at one end facing each other.

4. The anti-slip expansion nut with an anti-slip structure according to claim 3, characterized in that: The two threaded holes (24) on the front or rear side are internally threaded with the same locking screw (26).

5. The anti-slip expansion nut with an anti-slip structure according to claim 1, characterized in that: The top end face of the expandable sleeve (11) is flush with multiple anti-slip protrusions (23), and the top end face of the expandable sleeve (11) is provided with multiple auxiliary end face anti-slip grooves (14) at equal angles.

6. The anti-slip expansion nut with an anti-slip structure according to claim 1, characterized in that: The expandable sleeve (11) has multiple slits (13) on its annular outer wall at equal angles.

7. The anti-slip expansion nut with an anti-slip structure according to claim 1, characterized in that: The bottom end face of the internal threaded sleeve (12) is provided with multiple weight-reducing holes (15) at equal angles.

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