Insert nut

Abstract

The utility model provides an insert nut which comprises a cylindrical nut body, internal threads are arranged on an inner ring of the nut body, a first annular protrusion, a second annular protrusion and a bottom ring which are distributed up and down are arranged on an outer ring of the nut body along the axis of the nut body, skewed slots are evenly distributed in the outer ring of the first annular protrusion and the outer ring of the second annular protrusion in the circumferential direction, and the bottom ring is provided with a bottom ring. A first annular groove and a second annular groove are formed among the first annular protrusion, the second annular protrusion and the bottom ring at intervals, and caulking grooves which are obliquely formed are evenly formed in the top end of the nut body in the circumferential direction of the axis of the nut body. The insert nut has the advantages that the occlusion degree of the insert nut and a plastic part is improved through the inclined caulking groove, the following rotation prevention force of the insert nut is increased, and the connection reliability of the insert nut and the plastic part is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of insert nuts, in particular to an insert nut. Background Art

[0002] Insert nuts are products that embed an insert with internal threads and knurling or other patterns on the outside into automotive plastic products, making the plastic products have an effective thread. During the use of the insert nut after it is embedded in the plastic part, the insert nut is easily rotated by external forces, causing the connection of the insert nut to loosen, making the connection reliability between the insert nut and the plastic part worse. Summary of the invention

[0003] In view of this, the purpose of the utility model is to provide an insert nut in order to overcome the deficiencies in the prior art.

[0004] The utility model provides an insert nut, comprising a cylindrical nut body 1, the inner ring of the nut body 1 is provided with an internal thread, the outer ring of the nut body 1 is provided with a first annular protrusion 3, a second annular protrusion 4, and a bottom ring 2 distributed up and down along its axis, the outer rings of the first annular protrusion 3 and the second annular protrusion 4 are evenly distributed with oblique grooves in the circumferential direction, the first annular protrusion 3, the second annular protrusion 4, and the bottom ring 2 are spaced to form a first annular groove 5 and a second annular groove 6, and the top of the nut body 1 is evenly distributed with inclined embedding grooves 7 in the circumferential direction along its axis.

[0005] Furthermore, there is a distance between the inner wall of the embedding groove 7 and the inner ring of the nut body 1 .

[0006] Furthermore, an angle a1 between the embedding groove 7 and a radius line of the upper end surface of the nut body 1 is less than or equal to 6 degrees and greater than or equal to 15 degrees.

[0007] Furthermore, through holes 8 are symmetrically formed on the front and rear sides of the first annular protrusion 3 and the second annular protrusion 4 .

[0008] Furthermore, a reinforcing rib 9 connecting the second annular protrusion 4 and the bottom ring 2 is provided at the second annular groove 6 .

[0009] Furthermore, the diameters of the first annular protrusion 3 , the second annular protrusion 4 , and the bottom ring 2 are the same.

[0010] The advantages of the utility model are: the bite degree with the plastic part is improved by the inclined embedding groove, the anti-rotation force of the insert nut is increased, and the connection reliability of the insert nut and the plastic part is improved; the bite degree with the plastic part is improved by the inclined groove, and the anti-rotation force of the insert nut is increased; the bite with the plastic part is increased by the first annular groove, the second annular groove and the bottom ring, and the anti-falling effect of the insert nut is improved; the spacing setting can prevent the melted plastic from flowing into the internal thread; the through hole can guide the melted plastic to the first annular groove and the second annular groove, reducing the amount of plastic entering the threaded hole; the structural strength of the bottom ring is strengthened by the reinforcing ribs, and the anti-rotation effect of the insert nut can be strengthened. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the utility model;

[0012] Figure 2 It is the front view of the utility model;

[0013] Figure 3 It is a top view of the utility model;

[0014] Figure 4 for Figure 2 AA section view. DETAILED DESCRIPTION

[0015] The following is a detailed description of the embodiments of the present utility model in conjunction with the accompanying drawings.

[0016] See also Figures 1 to 4 The utility model provides an insert nut, which includes a cylindrical nut body 1, the inner ring of the nut body 1 is provided with an internal thread, the outer ring of the nut body 1 is provided with a first annular protrusion 3, a second annular protrusion 4, and a bottom ring 2 distributed up and down along its axis, and the outer rings of the first annular protrusion 3 and the second annular protrusion 4 are evenly distributed with oblique grooves in the circumferential direction, and the bite degree with the plastic part is improved by the oblique grooves, the anti-rotation force of the insert nut is increased, and the reliability of the connection between the insert nut and the plastic part is improved, and the first annular groove 5 and the second annular groove 6 are formed between the first annular protrusion 3, the second annular protrusion 4, and the bottom ring 2. The bite with the plastic part is increased by the first annular groove, the second annular groove, and the bottom ring, and the anti-falling effect of the insert nut is improved. The top of the nut body 1 is evenly distributed with inclined embedding grooves 7 along the circumferential direction of its axis, and the bite degree with the plastic part is improved by the embedding grooves, the anti-rotation force of the insert nut is increased, and the reliability of the connection between the insert nut and the plastic part is further improved.

[0017] There is a distance between the inner wall of the embedding groove 7 and the inner circle of the nut body 1. The distance setting can prevent the melted plastic from flowing into the internal thread.

[0018] See also Figure 3The angle a1 between the embedding groove 7 and the radius line of the upper end surface of the nut body 1 is less than or equal to 6 degrees and greater than or equal to 15 degrees. Preferably, the angle a1 is 12 degrees.

[0019] Through holes 8 are symmetrically provided on the front and rear sides of the first annular protrusion 3 and the second annular protrusion 4. The through holes can guide the melted plastic to the first annular groove and the second annular groove, reduce the amount of plastic entering the threaded hole, and improve the bite with the plastic, thereby improving the anti-falling effect of the insert nut.

[0020] The second annular groove 6 is provided with a reinforcing rib 9 connecting the second annular protrusion 4 and the bottom ring 2. The reinforcing rib is used to strengthen the structural strength of the bottom ring and to enhance the anti-rotation effect of the insert nut.

[0021] The processing is simple and convenient, and the diameters of the first annular protrusion 3, the second annular protrusion 4 and the bottom ring 2 are the same.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An insert nut, characterized in that: It includes a cylindrical nut body, the inner ring of the nut body is provided with an internal thread, the outer ring of the nut body is provided with a first annular protrusion, a second annular protrusion and a bottom ring distributed up and down along its axis, the outer rings of the first annular protrusion and the second annular protrusion are evenly distributed with oblique grooves in the circumferential direction, the first annular protrusion, the second annular protrusion and the bottom ring are spaced to form a first annular groove and a second annular groove, and the top of the nut body is evenly distributed with inclined embedding grooves in the circumferential direction along its axis.

2. An insert nut according to claim 1, characterized in that: There is a distance between the inner wall of the embedding groove and the inner circle of the nut body.

3. An insert nut according to claim 1, characterized in that: An angle a1 between the embedding groove and a radius line of the upper end surface of the nut body is less than or equal to 6 degrees and greater than or equal to 15 degrees.

4. An insert nut according to claim 1, characterized in that: Through holes are symmetrically formed on the front and rear sides of the first annular protrusion and the second annular protrusion.

5. The insert nut according to claim 1, characterized in that: The second annular groove is provided with reinforcing ribs connecting the second annular protrusion and the bottom ring.

6. An insert nut according to claim 1, characterized in that: The diameters of the first annular protrusion, the second annular protrusion, and the bottom ring are the same.

Images