CN217950954U

CN217950954U - Press riveting screw for aluminum plate

Info

Publication number: CN217950954U
Application number: CN202222295804.1U
Authority: CN
Inventors: 陈国龙
Original assignee: SUZHOU SHINING HIGH STRENGTH FASTENER CO Ltd
Current assignee: SUZHOU SHINING HIGH STRENGTH FASTENER CO Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-02
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a rivet pressing screw for aluminum plate, including screwhead, threaded rod and middleware, screwhead is provided with a plurality of dogtooth on being close to the terminal surface of threaded rod one side, and the middleware is located between screwhead and the threaded rod, and the middle part of middleware is equipped with annular boss, is equipped with first recess between annular boss and the screwhead, is equipped with the second recess between annular boss and the threaded rod. The press riveting screw for the aluminum plate is tightly occluded with the aluminum plate through the convex teeth at the head part of the screw, so that the friction force between the head part of the screw and the aluminum plate is increased, the loosening torque of the screw is improved, and the loosening and falling of the screw can be effectively prevented; the annular boss and the two grooves are arranged between the head of the screw and the threaded rod, so that the screw can be prevented from being loosened axially, an anti-falling effect is achieved, and the fastening effect is further improved; the first groove and the second groove are formed by adopting a thread rolling forming process, so that the production efficiency is high, the cost is low, and the product consistency is good.

Description

A press and rivet screw for aluminum plate

Technical Field

The utility model relates to a fastener technical field especially relates to a rivet pressing screw for aluminum plate.

Background

Screws are a common fastener and are widely used in machinery, electrical appliances and buildings. The pressure riveting screw is generally used for electronic mechanical equipment, metal plate industry products, hardware stamping or copper-aluminum plastic and other materials, when the pressure riveting screw is used and installed, the head with threads of the pressure riveting screw needs to be pressed, namely, the tail end of the pressure riveting screw enters a product material base body through stamping or other modes in an extruding mode.

The existing pressure riveting screw for the aluminum plate is easy to loosen and fall off in the use process, and the fastening effect is poor. In addition, the grooves in the traditional rivet pressing screws are machined, so that the production efficiency is low, the cost is high, and the product consistency is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rivet pressing screw for aluminum plates in order to overcome the defects of the prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a rivet pressing screw for aluminum plate, includes screwhead, threaded rod and middleware, screwhead is close to be provided with a plurality of dogtooth on the terminal surface of threaded rod one side, the middleware is located screwhead with between the threaded rod, the middle part of middleware is equipped with annular boss, annular boss with be equipped with first recess between the screwhead, annular boss with be equipped with the second recess between the threaded rod.

Preferably, the screw head is cylindrical.

Preferably, the plurality of convex teeth are arranged in an annular array by taking the center of the end face circle of the screw head as the center.

Preferably, one end of the threaded rod, which is far away from the screw head, is provided with a first chamfer.

Preferably, a second chamfer is arranged between the annular boss and the second groove, and a third chamfer is arranged between the second groove and the threaded rod.

Preferably, the cross-sectional diameter of the annular boss is greater than the cross-sectional diameter of the threaded rod.

Preferably, the cross-sectional diameter of the first groove is larger than the cross-sectional diameter of the second groove.

Preferably, the first groove and the second groove are formed by a thread rolling forming process.

The utility model provides a beneficial effect that technical scheme brought is:

1. the convex teeth are arranged at the head of the screw, so that after the press-riveting screw is pressed into the aluminum plate, the convex teeth are tightly meshed with the aluminum plate to enable the aluminum plate to deform, and the friction force between the head of the screw and the aluminum plate is increased, so that the loosening torque of the screw is improved, and the screw can be effectively prevented from loosening and falling off;

2. the annular boss, the first groove and the second groove are arranged between the head of the screw and the threaded rod, so that after the rivet pressing screw is pressed into a workpiece, a workpiece base body between the head of the screw and the threaded rod is extruded and deformed and clamped into the first groove and the second groove, the screw can be prevented from being loosened axially, an anti-falling effect is achieved, and the fastening effect is further improved;

3. the first groove and the second groove are formed by adopting a thread rolling forming process, and compared with the traditional turning process, the production efficiency is high, the cost is low, and the product consistency is good.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a front view of embodiment 1 of the present invention;

fig. 2 is a bottom view of embodiment 1 of the present invention;

fig. 3 is a schematic three-dimensional structure diagram of a screw head part in embodiment 1 of the present invention;

fig. 4 is a partial structural schematic view of embodiment 1 of the present invention;

fig. 5 is a front view of embodiment 2 of the present invention;

fig. 6 is a bottom view of embodiment 2 of the present invention;

fig. 7 is a schematic three-dimensional structure diagram of a screw head according to embodiment 2 of the present invention;

fig. 8 is a front view of embodiment 3 of the present invention;

fig. 9 is a bottom view of embodiment 3 of the present invention;

fig. 10 is a schematic diagram of a three-dimensional structure of a screw head according to embodiment 3 of the present invention.

In the figure: 1. a screw head; 2. a threaded rod; 3. a middleware; 31. an annular boss; 32. a first groove; 33. a second groove; 34. a second chamfer; 35. a third chamfer; 4. convex teeth; 5. a first chamfer; 6. a boss; 61. an arc-shaped surface.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

In the following description, for clarity and conciseness of description, not all of the various components shown in the figures are described. The various components shown in the figures provide those skilled in the art with a fully enabled disclosure of the invention. The operation of many of the components is familiar and obvious to those skilled in the art.

Example 1:

as shown in fig. 1-3, this embodiment provides a rivet pressing screw for aluminum plate, including screw head 1, threaded rod 2 and intermediate member 3, screw head 1 is cylindricly, is provided with a plurality of dogtooth 4 on the terminal surface of screw head 1 near threaded rod 2 one side, and the one end that screw head 1 was kept away from to threaded rod 2 is provided with first chamfer 5, and in this embodiment, the shape of dogtooth 4 is the cuboid, and the quantity of dogtooth 4 is 12, and 12 dogteeth 4 use the terminal surface centre of a circle of screw head to be the edge that annular array set up at screw head 1 as the center.

The rivet pressing screw provided by the embodiment is suitable for thin aluminum plates with the thickness of 0.5mm-1.5mm and thin steel plates with the thickness of less than 1.0 mm. During the use, will press in the preformed hole on the sheet metal of riveting the screw, the first chamfer 5 of screw afterbody can play the guide effect, and in fastening process, 4 imbeds in the sheet metal of dogtooth, closely interlock with the sheet metal, has increased screw head 1 and aluminum plate's frictional force to improve the not hard up moment of torsion of screw, can prevent effectively that the screw is not hard up to drop.

As shown in fig. 1-4, the intermediate member 3 is located between the screw head 1 and the threaded rod 2, the middle of the intermediate member 3 is provided with an annular boss 31, the diameter of the cross section of the annular boss 31 is larger than that of the threaded rod 2, a first groove 32 is provided between the annular boss 31 and the screw head 1, a second groove 33 is provided between the annular boss 31 and the threaded rod 2, the diameter of the cross section of the first groove 32 is larger than that of the second groove 33, a second chamfer 34 is provided between the annular boss 31 and the second groove 33, and a third chamfer 35 is provided between the second groove 33 and the threaded rod 2. When the pressure riveting screw is pressed into a workpiece, the second chamfer 34 and the third chamfer 35 can play a role in guiding, a workpiece base body below the screw head part 1 is extruded and deformed, and the workpiece base body is clamped into the first groove 32 and the second groove 33, so that the screw can be prevented from being loosened axially, an anti-falling effect is achieved, and a fastening effect is further improved. The first groove 32 and the second groove 33 are formed by thread rolling, and compared with the traditional turning process, the production efficiency is high, the cost is low, and the product consistency is good.

Example 2:

as shown in fig. 5 to 7, in this embodiment, on the basis of embodiment 1, only different embodiments of the convex teeth 4 are described, and the structures and functions of other parts are the same as those of embodiment 1, and thus are not described again. In this embodiment, the teeth 4 are triangular prisms, two triangular side surfaces of the teeth 4 are perpendicular to the end surface of the screw head 1, the number of the teeth 4 is 3, and the 3 teeth 4 are arranged on the edge of the screw head 1 in an annular array with the center of the end surface of the screw head 1 as the center.

The clinch screw provided by the embodiment is suitable for thin aluminum plates with the thickness of 0.5mm or less. During the use, will press and rivet the screw and impress in the preformed hole on the aluminum plate, the 4 sharp-pointed edges of dogtooth make the screw convenient more laborsaving when impressing aluminum plate, and the inseparable interlock of dogtooth 4 and aluminum plate has increased screwhead 1 and aluminum plate's frictional force to improve the not hard up moment of torsion of screw, can prevent effectively that the screw is not hard up to drop.

Example 3:

as shown in fig. 8-10, in this embodiment, on the basis of

embodiments

1 and 2, only different embodiments of the tooth 4 portion are described, and the structures and functions of other portions are the same as those of

embodiments

1 and 2, and thus are not described again. In this embodiment, the terminal surface central part that screw head 1 is close to threaded rod 2 one side is provided with a boss 6, and boss 6 is formed by end to end a plurality of arcwall face 61, and the bellying of arcwall face 61 is 8 towards the center of screw head terminal surface, and the quantity of arcwall face is 8, and 8 arcwall faces all are perpendicular with screw head terminal surface, and the quantity of arcwall face is more, and the fastening effect is stronger more.

The riveting screw provided by the embodiment is suitable for aluminum plates with the thickness of 1.5mm-4 mm. During the use, will press in the preformed hole that the screw pressed in on the aluminum plate for 6 imbeds in the aluminum plate of boss, the depressed part and the inseparable interlock of aluminum plate of arcwall face 61 have increased screwhead portion 1 and aluminum plate's frictional force, thereby improved the not hard up moment of torsion of screw, can prevent effectively that the screw is not hard up to drop.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A rivet-pressing screw for aluminum plates, characterized in that it comprises: screw head (1), threaded rod (2) and intermediate part (3), screw head (1) is close to be provided with a plurality of dogtooth (4) on the terminal surface of threaded rod (2) one side, intermediate part (3) are located screw head (1) with between threaded rod (2), the middle part of intermediate part (3) is equipped with annular boss (31), annular boss (31) with be equipped with first recess (32) between screw head (1), annular boss (31) with be equipped with second recess (33) between threaded rod (2).

2. A clinch screw for aluminium panels as claimed in claim 1, in which: the screw head (1) is cylindrical.

3. A clinch screw for aluminium panels as claimed in claim 1, in which: the plurality of convex teeth (4) are arranged in an annular array by taking the center of the end face circle of the screw head (1) as the center.

4. A clinch screw for aluminium panels as claimed in claim 1, in which: one end of the threaded rod (2) far away from the screw head (1) is provided with a first chamfer (5).

5. A clinch screw for aluminium panels as claimed in claim 1, in which: annular boss (31) with be equipped with second chamfer (34) between second recess (33), second recess (33) with be equipped with third chamfer (35) between threaded rod (2).

6. A clinch screw for aluminium panels as claimed in claim 1, in which: the diameter of the cross section of the annular boss (31) is larger than that of the cross section of the threaded rod (2).

7. A clinch screw for aluminium panels according to claim 1, characterised in that: the cross-sectional diameter of the first groove (32) is larger than the cross-sectional diameter of the second groove (33).

8. A clinch screw for aluminium panels as claimed in claim 1, in which: the first groove (32) and the second groove (33) adopt a thread rolling forming process.