Paint scraping nut

Abstract

The utility model relates to a paint scraping nut which comprises a nut body, an internal thread is arranged in the center of the nut body, a stamping groove distributed circumferentially is formed in the position, located on the internal thread, of the nut body, and a protruding part used for paint scraping is arranged at the position, close to the stamping groove, of a thread tooth of the internal thread. The nut mainly aims at forming the stamping groove in the nut body through stamping of a customized stamping rod and naturally forming the downward protruding part in the internal thread, when the nut body is in threaded connection with a screw with a paint layer, the paint layer on the screw is extruded and polished through the protruding part, so that the metal part of the screw is fully connected with the protruding part, and the service life of the screw is prolonged. Therefore, the circuit grounding requirement is met, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fastener, especially relates to a paint scraping nut. BACKGROUND

[0002] In order to improve the anticorrosion effect of fastener, usually paint spraying treatment is done on the surface of fastener, which also makes the fastener have high insulation, when the fastener is used for wiring, the paint layer on the side of screw thread needs to be polished manually to meet the requirement of electrician grounding, but the method is more troublesome and affects the work efficiency of electrician. SUMMARY

[0003] In order to overcome the deficiency of the background art, the utility model adopts the technical scheme of a paint scraping nut, which comprises a nut body, an internal thread is arranged at the center of the nut body, the nut body is provided with stamping grooves in a circumferential distribution at the internal thread, and a protruding part for scraping paint is arranged at the position of the screw thread of the internal thread close to the stamping groove.

[0004] By adopting the above technical scheme, the nut body is formed with stamping grooves by customized punch stamping, and the protruding part facing downward is naturally formed at the internal thread, when the nut body is threadedly connected to the screw with a paint layer, the paint layer on the screw is extruded and polished by the protruding part, so that the metal part of the screw is fully connected with the protruding part, thereby meeting the requirement of circuit grounding, and the utility model has high practicability.

[0005] The utility model is further provided with the stamping groove, which is parallel to the axis of the nut body, so that a plurality of protruding parts are arranged on each turn of the screw thread of the internal thread, and the screw is connected in a multi-point contact mode, thereby reducing the probability of insulation between the nut body and the screw.

[0006] The utility model is further provided with the stamping groove, which is a trapezoidal groove, a rectangular groove, a triangular groove or a semicircular groove with an opening direction facing inward.

[0007] The utility model is further provided with the screw thread of the internal thread, which is provided with an upper tooth surface, a tooth top surface and a lower tooth surface connected in sequence, and the protruding part is arranged at the position of the lower tooth surface close to the stamping groove, after the punch rod punches and cuts the screw thread from top to bottom, part of the material is accumulated at the lower tooth surface, so that the protruding part is naturally formed, the processing mode is simple, and the utility model is suitable for batch production.

[0008] The utility model is further provided with the nut body, which is provided with a gasket part coaxially distributed with the internal thread, and the stamping groove is perpendicular to the bottom surface of the gasket part, when the stamping groove is processed, the gasket part serves as the centering structure of the clamp, compared with the nut with only an outer hexagonal structure, the clamping speed is fast, the positioning is more accurate, and the processing is more convenient.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] The nut body is punched out with a custom punch to form a punching groove, and a downward-facing bulge is naturally formed on the internal thread. When the nut body is threadedly connected to a screw with a paint layer, the coating on the screw thread is squeezed and polished by the bulge, so that the metal part of the screw is fully connected to the bulge, thereby meeting the circuit grounding requirements and having strong practicality.

[0011] The embodiments of the present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a top view of the utility model;

[0013] Figure 2 For the utility model Figure 1 A sectional view in the middle;

[0014] Figure 3 For the utility model Figure 2 A partial enlarged view of point B in the middle;

[0015] Figure 4 This is a top view of the structure of the punch rod of the utility model;

[0016] Wherein: 1-nut body, 2-internal thread, 3-stamping groove, 4-protrusion, 5-upper tooth surface, 6-top surface, 7-lower tooth surface, 8-washer part, 9-punch rod; DETAILED DESCRIPTION

[0017] like Figures 1-3 As shown, this embodiment provides a paint scraping nut provided by the utility model, including a nut body 1, an internal thread 2 is provided at the center of the nut body 1, the nut body 1 is provided with a circumferentially distributed stamping groove 3 on the internal thread 2, and the thread of the internal thread 2 is provided with a protrusion 4 for scraping paint near the stamping groove 3.

[0018] In this embodiment, the direction of the stamping groove 3 is parallel to the axis of the nut body 1, so that each turn of the internal thread 2 has multiple groups of protrusions 4, and the screw is externally connected in a multi-point contact manner, reducing the probability of insulation between the nut body 1 and the screw. The stamping groove 3 is a trapezoidal groove / rectangular groove / triangular groove / semicircular groove with the opening direction facing inward. The thread of the internal thread 2 is provided with an upper tooth surface 5, a tooth top surface 6 and a lower tooth surface 7 connected in sequence. The protrusion 4 is provided on the lower tooth surface 7 near the stamping groove 3. The nut body 1 is provided with a washer portion 8 coaxially distributed with the internal thread 2, and the direction of the stamping groove 3 is perpendicular to the bottom surface of the washer portion 8.

[0019] Combine Figure 4As shown, in the utility model, the nut main body 1 is formed by the customized punch rod 9 stamping to form the stamping groove 3, and the internal thread 2 is made to be around the stamping groove 3 by extrusion, after the punch rod 9 punches the screw thread from top to bottom, part of material is extruded and accumulated at the lower tooth surface 7, so that the convex part 4 is naturally formed, the processing mode is simple, and it is suitable for mass production;When the nut main body 1 is threadedly connected to the screw with a paint layer, the convex part 4 is connected with the screw thread of the screw, the coating on the screw thread is polished through the convex part 4, so that the metal part of the screw is connected with the convex part 4, thereby meeting the requirement of circuit grounding.

[0020] The above are preferred embodiments of the application, not limiting the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A paint stripping nut comprising a nut body (1) provided with an internal thread (2) in the centre of the nut body (1), characterized in that, The nut body (1) is provided with circumferentially distributed stamping grooves (3) at the inner thread (2), and the thread of the inner thread (2) is provided with a raised portion (4) for paint scraping at the position close to the stamping groove (3).

2. A paint scraping nut according to claim 1, wherein: The stamping groove (3) is oriented parallel to the axis of the nut body (1).

3. A paint scraping nut according to claim 1, wherein: The stamping groove (3) is a trapezoidal groove / rectangular groove / triangular groove / half-round groove with the opening direction inward.

4. A paint scraping nut according to claim 1, wherein: The thread of the inner thread (2) is provided with an upper tooth surface (5), a tooth crest (6) and a lower tooth surface (7) connected in sequence, and the raised portion (4) is arranged at the position close to the stamping groove (3) of the lower tooth surface (7).

5. A paint scraping nut according to claim 1, wherein: The nut body (1) is provided with a gasket portion (8), and the stamping groove (3) is oriented perpendicular to the bottom surface of the gasket portion (8).

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