Elastic cold riveting head

Abstract

The utility model provides an elastic cold riveting head which is characterized by comprising a forming riveting head with one end being a forming end and the other end being a connecting end; the connecting piece is connected to the connecting end of the forming rivet head; the interior of the main cavity is hollow, and the forming rivet head is arranged in the main cavity in a sleeved mode; the connecting end of the forming rivet head is sleeved with an elastic piece, and the elastic piece abuts against the connecting piece. The position of the limiting column riveting column is arranged in the main cavity in a sleeved mode, then riveting forming is conducted through the forming riveting head, and no flash is generated.

Description

Technical Field

[0001] The utility model relates to an elastic cold rivet head. Background Art

[0002] With the rapid rise of new energy vehicles in China, higher requirements are also needed for the terminal connectors in the drive motor (plastic riveting). Riveting is divided into: constant temperature riveting, pulse riveting, ultrasonic riveting, infrared riveting, breeze hot riveting and other riveting processes. With the advancement of the times, the requirements for riveting are gradually increasing. Plastic riveting was previously only used for components with low requirements such as automotive interiors, central control, door panels, etc. After a long period of application, this process has gradually been used in core key parts such as: the connection terminals of the drive motor (the terminal connection method is: plastic copper busbar riveting method). The usage scenarios have changed and the requirements are higher. The plastic flash is serious when ordinary rivet heads are riveted. Utility Model Content

[0003] The utility model aims to solve the above problems in the prior art and proposes an elastic cold rivet head, which sets a limit column rivet column through a main cavity and then rivets the rivet column through a forming rivet head without generating flash.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an elastic cold rivet head, characterized in that it comprises:

[0005] A forming rivet head, one end of which is a forming end and the other end is a connecting end;

[0006] A connecting piece connected to the connecting end of the forming rivet head;

[0007] A main cavity is hollow inside, and the forming rivet head is sleeved inside the main cavity;

[0008] The connecting end of the forming rivet head is sleeved with an elastic member and the elastic member abuts against the connecting member.

[0009] Furthermore, the lower end of the main cavity is a limiting end, which is cylindrical.

[0010] Furthermore, the main cavity is symmetrically provided with limiting holes, the forming end of the forming rivet head is provided with a long limiting slot, a limiting pin is passed through the limiting slot, and both ends of the limiting pin pass through the limiting slot.

[0011] Furthermore, a clamping ring is sleeved on the limiting hole of the main cavity.

[0012] Furthermore, a connecting hole is provided on the connecting end of the forming rivet head, and a connecting pin is passed through the connecting hole to be fixed to the connecting piece.

[0013] Furthermore, the diameter of the connecting end of the forming rivet head is smaller than that of the forming end.

[0014] Furthermore, as another solution, the lower end of the main cavity is flat, and the forming end of the forming rivet head is flat columnar.

[0015] Furthermore, the elastic member is a spring.

[0016] Furthermore, the elastic member includes a first end face and a second end face, the first end face abuts against the connecting member, the second end face abuts against the transition face of the forming rivet head, and the first end face and the second end face are connected through a hollow and spiral structure.

[0017] Furthermore, the spiral structure includes a plurality of upper inclined surfaces and a plurality of lower inclined surfaces, which are parallel to each other. When the elastic body is squeezed and compressed, the plurality of upper inclined surfaces form surface contact with each other, and the plurality of lower inclined surfaces form surface contact with each other.

[0018] Compared with the prior art, the advantages of the present application are as follows: the position of the rivet column is set by the main cavity, and then the rivet column is formed by riveting with a forming rivet head, so no flash will be generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a cold rivet head;

[0020] Figure 2 This is a schematic diagram of a second embodiment of a cold rivet head;

[0021] Figure 3 Schematic diagram of forming rivet head in embodiment 2 of cold rivet head

[0022] Figure 4 This is a schematic diagram of the explosion of the cold rivet head;

[0023] Figure 5 is a schematic diagram of the upper inclined surface and the lower inclined surface of the elastic member;

[0024] In the figure, 1, connecting part; 2, main cavity; 21, retaining ring; 22, limiting hole; 23, connecting end; 3, forming rivet head; 301, transition surface; 31, limiting slot hole; 32, elastic part; 321, first end face; 322, second end face; 323, upper inclined surface; 324, lower inclined surface; 33, connecting pin; 331, connecting hole; 34, limiting pin. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.

[0026] Embodiment 1

[0027] like Figure 1 , 4 As shown in 5, an elastic cold rivet head is characterized in that it comprises:

[0028] A forming rivet head 3, one end of which is a forming end and the other end is a connecting end 23;

[0029] A connecting piece 1 connected to a connecting end 23 of a forming rivet head 3;

[0030] The main cavity 2 is hollow inside, and the forming rivet head 3 is sleeved inside the main cavity 2;

[0031] The connection end 23 of the forming rivet head 3 is sleeved with an elastic member 32 and the elastic member 32 abuts against the connection member 1 .

[0032] Furthermore, the lower end of the main cavity 2 is a limiting end, which is cylindrical. The thickness of the cylindrical wall of the main cavity 2 and the diameter of the formed rivet column can be changed according to actual conditions.

[0033] Furthermore, the main cavity 2 is symmetrically provided with limiting holes 22 , and the forming end of the forming rivet head 3 is provided with a long limiting slot 31 , a limiting pin 34 is passed through the limiting slot 31 , and both ends of the limiting pin 34 pass through the limiting slot 31 .

[0034] Furthermore, a clamping ring 21 is sleeved on the limiting hole 22 of the main cavity 2. After the limiting pin 34 fixes the position of the forming rivet head 3 in the main cavity 2, the limiting pin 34 is placed by the clamping ring 21 to pop out, and the forming rivet head 3 can move up and down in the length direction of the limiting slot 31 to perform riveting work.

[0035] Furthermore, a connection hole 331 is formed on the connection end 23 of the forming rivet head 3, and a connection pin 33 is passed through the connection hole 331 to fix the forming rivet head 3 and the connecting member 1. The forming rivet head 3 and the connecting member 1 are fixed by the connection pin 33.

[0036] Furthermore, the diameter of the connection end 23 of the forming rivet head 3 is smaller than that of the forming end, so as to facilitate the elastic member 32 to abut against it.

[0037] Furthermore, the elastic member is a spring.

[0038] Furthermore, the elastic member includes a first end face 321 and a second end face 322, wherein the first end face 321 abuts against the connecting member, and the second end face 322 abuts against the transition face 301 of the forming rivet head, and the first end face 321 and the second end face 322 are connected via a hollow and spiral structure.

[0039] like Figure 5As shown further, the spiral structure includes a plurality of upper inclined surfaces 323 and a plurality of lower inclined surfaces 324, and the upper inclined surfaces 323 and the lower inclined surfaces 324 are parallel to each other. When the elastomer is squeezed and compressed, the plurality of upper inclined surfaces 323 and the upper inclined surfaces 323 form surface contact, and the plurality of lower inclined surfaces 324 and the lower inclined surfaces 324 form surface contact.

[0040] A limiting angle is formed where the upper inclined surface 323 and the lower inclined surface 324 are connected. When squeezed, the upper and lower angles can prevent the elastic member from being laterally offset, which can further effectively solve the position eccentricity problem caused by product deviation and assembly deviation.

[0041] Embodiment 2

[0042] like Figure 2-3 As shown, further, as another solution, the lower end of the main cavity 2 is flat, and the forming end of the forming rivet head 3 is flat columnar. This shape can be used with different rivet columns.

[0043] The elastic cold rivet head is mainly used in conjunction with the breeze hot rivet head to complete the riveting forming.

[0044] The elastic cold rivet head of the present application first limits the melted position of the rivet column through the main cavity 2 after the rivet column melts, and then the forming rivet head 3 is pressed down to perform riveting and forming after temperature control. The riveting position of the rivet column is wrapped by the main cavity 2 to solve the problems of plastic flash and material shortage. At the same time, the tightness problem is solved through the action of the elastic part 32, and the position eccentricity problem caused by product deviation and assembly deviation is also compensated.

[0045] The technical solution of the above utility model provides a solution that is significantly different from the prior art to address the technical problem that the prior art solution is too single. The parts not involved in the technical solution of this application are the same as the prior art or can be implemented by using the prior art and will not be described in detail.

[0046] The technical solutions in the above embodiments have clearly and completely described the contents of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. An elastic cold rivet head, characterized in that: It includes: A forming rivet head, one end of which is a forming end and the other end is a connecting end; A connecting piece connected to the connecting end of the forming rivet head; A main cavity is hollow inside, and the forming rivet head is sleeved inside the main cavity; The connecting end of the forming rivet head is sleeved with an elastic member and the elastic member abuts against the connecting member.

2. The elastic cold rivet head according to claim 1, characterized in that: The lower end of the main cavity is a limiting end, which is cylindrical.

3. The elastic cold rivet head according to claim 2, characterized in that: The lower end of the main cavity is flat, and the forming end of the forming rivet head is flat columnar.

4. The elastic cold rivet head according to claim 1, characterized in that: The main cavity is symmetrically provided with limiting holes, the forming end of the forming rivet head is provided with a long limiting slot hole, a limiting pin is passed through the limiting slot hole, and both ends of the limiting pin pass through the limiting slot hole.

5. The elastic cold rivet head according to claim 4, characterized in that: A clamping ring is sleeved on the limiting hole of the main cavity.

6. The elastic cold rivet head according to claim 1, characterized in that: A connecting hole is provided on the connecting end of the forming rivet head, and a connecting pin is passed through the connecting hole to be fixed with the connecting piece.

7. The elastic cold rivet head according to claim 1, characterized in that: The connecting end of the forming rivet head has a smaller diameter than the forming end.

8. The elastic cold rivet head according to claim 1, characterized in that: The elastic member is a spring.

9. The elastic cold rivet head according to claim 1, characterized in that: The elastic member includes a first end face and a second end face, the first end face abuts against the connecting member, the second end face abuts against the transition face of the forming rivet head, and the first end face and the second end face are connected through a hollow and spiral structure.

10. The elastic cold rivet head according to claim 9, characterized in that: The spiral structure includes a plurality of upper inclined surfaces and a plurality of lower inclined surfaces, which are parallel to each other. When the elastic body is squeezed and compressed, the plurality of upper inclined surfaces form surface contact with each other, and the plurality of lower inclined surfaces form surface contact with each other.

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