CN210240238U

CN210240238U - Step rivet

Info

Publication number: CN210240238U
Application number: CN201921303127.5U
Authority: CN
Inventors: Zhichun Zhou; 周志纯; Biao Wu; 吴飚
Original assignee: Changde Bolt Hardware Products Co ltd
Current assignee: Changde Bolt Hardware Products Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-04-03
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses a step rivet, including the nail body and nail core pole, the nail body link up along the center pin has the centre bore, the nail core pole is inserted and is located in the centre bore, the one end of nail core pole is equipped with fixed pressure head, rupture groove has been seted up to the periphery of nail core pole, first anticreep groove has been seted up to the nail core pole between fixed pressure head and rupture groove, the nail body includes the fixed part, the middle part periphery of fixed part is equipped with separates the fender ring, separate and keep off the ring and keep apart into two grafting portions with the fixed part, the one end of fixed part is equipped with first kink, the other end is equipped with the second kink, the external diameter of first kink and second kink all is less than the external diameter of fixed part, the nail body is located between. The step rivet is fast to install, time-saving and labor-saving.

Description

Step rivet

Technical Field

The utility model belongs to the technical field of the rivet, concretely relates to step rivet.

Background

When products such as toys, hardware accessories or angle square tools are riveted, the riveted workpieces are often required to be capable of rotating mutually, at present, common pins or shafts are mostly adopted to meet the requirement of achieving the function, and the riveting tool is complex in installation, time-consuming and labor-consuming.

SUMMERY OF THE UTILITY MODEL

The utility model is directed to the above-mentioned technical problem, a step rivet that the installation is swift and labour saving and time saving is proposed.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a step rivet, includes the nail body and the nail core pole, the nail body has run through the centre bore along the center pin, the nail core pole is inserted and is located in the centre bore, the one end of nail core pole is equipped with fixed pressure head, the rupture groove has been seted up to the periphery of nail core pole, the nail core pole has seted up first anticreep groove between fixed pressure head and rupture groove, the nail body includes the fixed part, the middle part periphery of fixed part is equipped with separates the fender ring, separate and keep apart into two grafting portions with the fixed part by keeping apart the ring, the one end of fixed part is equipped with first kink, and the other end is equipped with the second kink, the external diameter of first kink and second kink all is less than the external diameter of fixed part, the nail body is located between fixed pressure.

As a further improvement of the above technical solution:

the first bending part and the second bending part are both provided with first guiding conical surfaces at the edge of an inner hole at one end far away from the fixing part.

All have three along the axial through setting separate the disconnected groove around the center pin array on first kink and the second kink.

The sliding pressure head comprises a pressure applying end and an anti-falling end which are integrally formed, the anti-falling end is in a cylindrical shape, a second anti-falling groove is formed in the periphery of the anti-falling end, the outer diameter of the pressure applying end is larger than that of the anti-falling end, the inner diameter of the second bending portion is larger than that of the nail core rod, and the anti-falling end is inserted into the inner hole of the second bending portion.

And a second guide conical surface is arranged between the pressing end and the anti-falling end.

And a third guide conical surface is arranged at one end of the fixed pressure head connected with the nail core rod.

The fixing part is provided with an anti-falling hole used for sleeving and fixing the anti-falling end at one end of the second bending part.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a step rivet includes two pressure heads and two kinks for the both ends of fixed part are all warp the riveting, and the external diameter of first kink and second kink all is less than the external diameter of fixed part, all form the step between first kink and fixed part, second are buckled and the fixed part promptly, make the rotation piece after the installation can rotate on the fixed part. The step rivet is fast to install, time-saving and labor-saving.

Drawings

Fig. 1 is a schematic structural view of the step rivet of the present invention.

Fig. 2 is a schematic side view of the rivet body of the stepped rivet of the present invention.

Fig. 3 is a schematic structural view of the step rivet in use of the present invention.

The reference numerals in the figures denote:

1. a nail body; 11. a fixed part; 12. a baffle ring; 13. a plug-in part; 14. a first bent portion; 15. a second bent portion; 16. a first guiding conical surface; 17. a blocking groove; 18. anti-drop holes; 2. nailing a core rod; 21. fixing a pressure head; 22. a breaking groove; 23. a first drop-preventing groove; 24. a third guiding conical surface; 3. sliding the press head; 31. a pressure applying end; 32. an anti-drop end; 33. a second anticreep groove; 34. a second guiding conical surface; 4. a central bore; 5. a first rotating member; 6. a second rotating member; 7. a gasket.

Detailed Description

The technical solution of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

As shown in fig. 1 and 2, the step rivet of the present embodiment includes a rivet body 1 and a mandrel rod 2, the rivet body 1 has a central hole 4 penetrating along a central axis, the mandrel rod 2 is inserted into the central hole 4, a fixing ram 21 is disposed at one end of the mandrel rod 2, a fracture groove 22 is disposed on an outer periphery of the mandrel rod 2, and a first anti-drop groove 23 is disposed between the fixing ram 21 and the fracture groove 22 of the mandrel rod 2. The nail body 1 includes fixed part 11, and the middle part periphery of fixed part 11 is equipped with and separates fender ring 12, separates fender ring 12 and keeps apart into two grafting portions 13 with fixed part 11, and the one end of fixed part 11 is equipped with first kink 14, and the other end is equipped with second kink 15, and the external diameter of first kink 14 and second kink 15 all is less than the external diameter of fixed part 11, and the nail body 1 is located between fixed pressure head 21 and the slip pressure head 3. When the step rivet is used, as shown in fig. 3, the first rotating part 5 and the second rotating part 6 are respectively sleeved on the inserting part 13, meanwhile, the first bending part 14 and the second bending part 15 are both sleeved with the gaskets 7, then the fixed pressure head 21 and the sliding pressure head 3 are pulled oppositely by the rivet installation tool, the fixed pressure head 21 is extruded on the first bending part 14 and the sliding pressure head 3 to extrude the second bending part 15, so that the first bending part 14 and the second bending part 15 are deformed and pressed on the corresponding gaskets 7, as long as the length of the inserting part 13 along the axial direction is ensured to be greater than the thickness of the rotating part, the rotating part can rotate around the inserting part 13, and the step rivet is installed quickly, time and labor saving.

In this embodiment, the inner hole edges of the first bending portion 14 and the second bending portion 15 away from the fixing portion 11 are both provided with a first guiding tapered surface 16, which facilitates the guiding of the fixing ram 21 and the sliding ram 3.

In this embodiment, three partition grooves 17 are formed on the first bent portion 14 and the second bent portion 15 around the central axis in an array manner, so that the first bent portion 14 and the second bent portion 15 are smoothly deformed and have stable shapes after being deformed.

In this embodiment, the sliding pressure head 3 includes a pressure applying end 31 and an anti-separation end 32 that are integrally formed, the anti-separation end 32 is cylindrical, and a second anti-separation groove 33 is formed on the outer periphery of the anti-separation end 32, the outer diameter of the pressure applying end 31 is larger than the outer diameter of the anti-separation end 32, the inner diameter of the second bending portion 15 is larger than the outer diameter of the mandrel bar 2, and the anti-separation end 32 is inserted into the inner hole of the second bending portion 15. In the process that the sliding pressure head 3 presses the second bent portion 15, the pressing end 31 is used for pressing the second bent portion 15 to be bent, and the anti-falling end 32 is used for preventing the sliding pressure head 3 from falling off.

In this embodiment, a second guiding tapered surface 34 is disposed between the pressing end 31 and the anti-falling end 32, the second guiding tapered surface 34 is used for guiding the bending of the second bending portion 15, the bending degree of the second bending portion 15 is different due to different tapered surfaces of the second guiding tapered surface 34, and the taper angle of the second guiding tapered surface 34 is preferably 45 degrees, so that the deformation of the second bending portion 15 is smooth and the stability after deformation is high.

In this embodiment, one end of the fixing ram 21 connected to the mandrel bar 2 is provided with a third guiding tapered surface 24, the third guiding tapered surface 24 is used for guiding the bending of the first bent portion 14, the bending degree of the first bent portion 14 is different due to different tapered surfaces of the third guiding tapered surface 24, and the taper angle of the third guiding tapered surface 24 is preferably 45 degrees, so that the deformation of the first bent portion 14 is smooth and the stability after deformation is high.

In this embodiment, the fixing portion 11 is provided with an anti-falling hole 18 for sleeving and fixing the anti-falling end 32 at one end of the second bending portion 15. After the sliding pressure head 3 extrudes the second bending part 15 and bends, the anti-falling end 32 is sleeved in the anti-falling hole 18 to form interference fit with the anti-falling hole 18, so that the sliding pressure head 3 is prevented from falling off, and the stability of the shape of the bent second bending part 15 is improved.

Claims

1. The utility model provides a step rivet, includes the nail body (1) and nails core rod (2), the nail body (1) has run through centre bore (4) along the center pin, the nails core rod (2) are inserted and are located in centre bore (4), the one end of nailing core rod (2) is equipped with fixed pressure head (21), fracture groove (22) have been seted up to the periphery of nailing core rod (2), first anticreep groove (23), its characterized in that have been seted up in nailing core rod (2) between fixed pressure head (21) and fracture groove (22): the nail body (1) comprises a fixing portion (11), a blocking ring (12) is arranged on the periphery of the middle of the fixing portion (11), the blocking ring (12) separates the fixing portion (11) into two insertion portions (13), a first bending portion (14) is arranged at one end of the fixing portion (11), a second bending portion (15) is arranged at the other end of the fixing portion (11), the outer diameters of the first bending portion (14) and the second bending portion (15) are smaller than the outer diameter of the fixing portion (11), and the nail body (1) is located between a fixed pressure head (21) and a sliding pressure head (3).

2. A step rivet according to claim 1, wherein: and the inner hole edges of one ends of the first bending part (14) and the second bending part (15) far away from the fixing part (11) are respectively provided with a first guiding conical surface (16).

3. A step rivet according to claim 2, wherein: and three partition grooves (17) which penetrate through the first bent part (14) and the second bent part (15) along the axial direction are formed on the first bent part and the second bent part respectively around the central shaft.

4. A step rivet according to any one of claims 1 to 3, wherein: the sliding press head (3) comprises a pressing end (31) and an anti-falling end (32) which are integrally formed, the anti-falling end (32) is cylindrical, a second anti-falling groove (33) is formed in the periphery of the anti-falling end, the outer diameter of the pressing end (31) is larger than that of the anti-falling end (32), the inner diameter of the second bending portion (15) is larger than that of the nail core rod (2), and the anti-falling end (32) is inserted into an inner hole of the second bending portion (15).

5. A step rivet according to claim 4, wherein: a second guide conical surface (34) is arranged between the pressing end (31) and the anti-falling end (32).

6. A step rivet according to claim 1, wherein: and a third guide conical surface (24) is arranged at one end of the fixed pressure head (21) connected with the nail core rod (2).

7. A step rivet according to claim 1, wherein: one end of the fixing part (11) on the second bending part (15) is provided with an anti-falling hole (18) for sleeving and fixing the anti-falling end (32).