Stamping rolling forming reed structure and application structure thereof

Abstract

The utility model discloses a reed structure formed by stamping and rolling and an application structure thereof, which are formed by stamping and rolling a metal sheet and comprise a front ring body, a rear ring body and a plurality of spring strips, according to the stamping edge rolling forming reed structure, the metal sheet is formed through stamping edge rolling, the front end opening of the front ring body is designed to be in the horn shape, the contact starting point is arranged on the periphery of the inner side of the rear end of the front ring body, the contact starting point is close to the front end face of the front ring body, and rapid contact and signal conduction can be achieved; a contact starting point is formed on the inner wall of the front end of the elastic piece strip, a contact end point is formed on the inner wall of the middle of the elastic piece strip, the contact pin is in contact with the contact starting point, the contact middle point and the contact end point in sequence, continuous contact is achieved, the requirement for contact conduction in GB / T20234 is completely met, and the contact efficiency is improved. The method can be well applied to the field of new energy automobiles.

Description

Technical Field

[0001] The utility model relates to the technology of the conductive terminal field, in particular to a stamping and rolling forming spring sheet structure and an application structure thereof. Background Art

[0002] New energy vehicles usually refer to electric vehicles. Electric vehicles (BEV) refer to vehicles that use onboard power as power, use motors to drive wheels, and meet the requirements of road traffic and safety regulations. Because the impact on the environment is relatively small compared to traditional vehicles, its prospects are widely optimistic. Working principle: battery - current - power regulator - motor - power transmission system - drive the car.

[0003] New energy vehicles require the use of electrical connectors during the charging process. The electrical connector has a conductive terminal, which is also called a crown spring terminal or a socket terminal. It has a reed (also called a crown spring) inside, which is a conductive contact terminal used to connect to the pin in the electrical connector. It is also widely used in other electronic and electrical equipment.

[0004] The reeds in the prior art are generally formed by stamping and twisting, and are generally cage-shaped, that is, a structure with large ends and a small middle. The contact points inside are mainly concentrated in the middle, and the distance between the contact starting point and the front end of the reed is relatively long, reaching more than 3.5 mm, which does not meet most signal conduction requirements and does not meet the contact conduction requirements in GB / T20234, and cannot be well applied in the field of new energy vehicles. Therefore, it is necessary to improve the current conductive terminals. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a stamped and rolled spring structure and its application structure, which can effectively solve the problem that the existing conductive terminals do not meet the contact and conduction requirements of GB / T20234.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A stamped and rolled spring sheet structure, which is formed by stamping and rolling a metal sheet, comprises a front ring body, a rear ring body and a plurality of spring sheet strips; the front end opening of the front ring body is trumpet-shaped, and the inner peripheral edge of the rear end of the front ring body has a contact starting point; the rear ring body is located directly behind the front ring body, and the outer diameter of the rear ring body is larger than the maximum outer diameter of the front ring body; the plurality of spring sheet strips are arranged at intervals around the circle and extend spirally, and the plurality of spring sheet strips together form an insertion cavity for inserting a pin, with large ends and a small middle part, the front end of each spring sheet strip is integrally connected to the rear side of the front ring body, the rear end of each spring sheet strip is integrally connected to the front side of the rear ring body, the front end inner wall of each spring sheet strip has a contact midpoint, and the middle inner wall of each spring sheet strip has a contact end point.

[0008] As a preferred solution, when the contact starting point begins to contact the insertion pin, the distance from the contact starting point to the front end face of the front ring body is less than 1 mm, thereby achieving rapid conduction.

[0009] As a preferred solution, the front ring body is formed by stamping and rolling, and an opening is left on it so that the front ring body can elastically shrink radially.

[0010] As a preferred solution, the rear ring body is formed by stamping and rolling to be cylindrical with a joint seam on it, which can be elastically opened or closed to better fit the outside.

[0011] An application structure of a stamped and rolled spring sheet structure comprises a shell and a stamped and rolled spring sheet structure; the shell has an installation cavity with an opening facing forward; the stamped and rolled spring sheet structure is arranged in the installation cavity, the front ring body and a plurality of spring strips are suspended in the installation cavity, the outer wall of the rear ring body is tightly fitted with the rear end inner wall of the installation cavity, and a protective cover is fixed on the front end of the shell, a limit ring is extended from the protective cover by bending backward in the opposite direction, and the limit ring is elastically abutted against the inner wall surface of the front end opening of the front ring body.

[0012] As a preferred solution, the front end opening of the installation cavity is trumpet-shaped to facilitate the insertion and installation of the stamped and rolled reed structure and to provide a more suitable elastic deformation space for the stamped and rolled reed structure.

[0013] As a preferred solution, the front end outer wall of the shell is recessed in an annular groove, and the protective sleeve is embedded in the annular groove so that the protective sleeve does not protrude, making the application structure smoother and easier to install and use.

[0014] As a preferred solution, the protective cover is made of stainless steel sheet, which has a simple structure, is easy to manufacture, has low cost, and is more wear-resistant.

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0016] The stamping and rolling spring structure of this product adopts metal sheets formed by stamping and rolling. The front end opening of the front ring body is designed to be trumpet-shaped, and a contact starting point is provided on the inner periphery of the rear end of the front ring body. The contact starting point is close to the front end surface of the front ring body, which can achieve rapid contact and signal conduction, meeting most signal conduction requirements, and forming a contact midpoint on the front end inner wall of the spring strip, and a contact end point on the middle inner wall of the spring strip. The pin contacts the contact starting point, contact midpoint and contact end point in turn to achieve continuous contact, which fully meets the contact conduction requirements in GB / T20234 and can be well used in the field of new energy vehicles.

[0017] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of a preferred embodiment of the utility model;

[0020] Figure 3 It is a schematic cross-sectional view of the application structure of a preferred embodiment of the utility model.

[0021] Description of the accompanying drawings:

[0022] 10. Stamping and rolling forming spring leaf structure 11. Front ring body

[0023] 111, opening position 12, rear ring body

[0024] 121, joint 13, spring strip

[0025] 131, insertion cavity 101, contact starting point

[0026] 102. Contact midpoint 103. Contact end point

[0027] 20, pin 30, housing

[0028] 31. Installation cavity 32. Annular groove

[0029] 33. Step surface 40. Protective cover

[0030] 41. Limiting ring. DETAILED DESCRIPTION

[0031] Please refer to Figures 1 to 3 As shown, it shows the specific structure of a stamping and rolling spring leaf structure 10 of a preferred embodiment of the utility model, which is formed by stamping and rolling a metal sheet, and includes a front ring body 11, a rear ring body 12 and a plurality of spring leaf strips 13.

[0032] The front opening of the front ring body 11 is horn-shaped to play a guiding role and facilitate the insertion and removal of the pin 20. The inner peripheral edge of the rear end of the front ring body 11 has a contact starting point 101. In this embodiment, the front ring body 11 is formed by stamping and rolling, and an opening 111 is left on it, so that the front ring body 11 can be elastically contracted in the radial direction. When the contact starting point 101 starts to contact the pin 20, the distance from the contact starting point 101 to the front end face of the front ring body 11 is less than 1 mm.

[0033] The rear ring body 12 is located directly behind the front ring body 11, and the outer diameter of the rear ring body 12 is greater than the maximum outer diameter of the front ring body 1. In this embodiment, the rear ring body 12 is formed by stamping and rolling, and is cylindrical, and a joint seam 121 is left on it, which can be elastically opened or closed to better fit the outside, and the rear ring body 12 is an elongated structure, and the assembly is more vertical.

[0034] The multiple spring strips 13 are arranged in a circumferential manner and extend in a spiral manner. The multiple spring strips 13 together form an insertion cavity 131 for inserting the pin 20, which has large ends and a small middle part. The front end of each spring strip 13 is integrally connected to the rear side of the front ring body 11, and the rear end of each spring strip 13 is integrally connected to the front side of the rear ring body 12. The front end inner wall of each spring strip 13 has a contact midpoint 102, and the middle inner wall of each spring strip 13 has a contact end point 103.

[0035] The utility model also discloses an application structure of a stamping and rolling-forming reed structure 10 , which comprises a housing 30 and the stamping and rolling-forming reed structure 10 .

[0036] The housing 30 has a mounting cavity 31 with an opening facing forward, and the shape of the mounting cavity 31 is adapted to the stamped and rolled spring structure 10. In the embodiment, the front opening of the mounting cavity 31 is horn-shaped, so as to facilitate the insertion and installation of the stamped and rolled spring structure 10 and provide a more suitable elastic deformation space for the stamped and rolled spring structure 10. In addition, the front outer wall of the housing 10 is recessed in the annular embedding groove 32. In addition, a step surface 33 is formed on the rear side of the mounting cavity 31.

[0037] The stamped and rolled spring sheet structure 10 is arranged in the installation cavity 31, the front ring body 11 and the plurality of spring strips 13 are suspended in the installation cavity 31, the outer wall of the rear ring body 12 is tightly fitted with the rear end inner wall of the installation cavity 31, and the rear end face of the rear ring body 12 abuts against the step surface 33 to prevent the stamped and rolled spring sheet structure 10 from moving backward, and a protective cover 40 is fixed on the front end of the shell 30, and a limit ring 41 is extended from the protective cover 40 by bending backward in the opposite direction, and the limit ring 41 elastically abuts against the inner wall surface of the front end opening of the front ring body 11 to prevent the stamped and rolled spring sheet structure 10 from slipping out of the installation cavity 31 forward. In this embodiment, the protective cover 40 is embedded in the annular embedding groove 32 so that the protective cover 40 does not protrude, making the application structure more flat and convenient for installation and use. In addition, the protective cover 40 is made of stainless steel sheet, which has a simple structure, is easy to make, has low cost, and is more wear-resistant.

[0038] The production process of this embodiment is described in detail as follows:

[0039] First, a stamped and rolled spring structure 10 is formed by stamping and rolling a metal sheet. Next, the stamped and rolled spring structure 10 is inserted into the mounting cavity 31 of the shell 30. After being inserted into place, the outer wall of the rear ring body 12 fits tightly with the rear end inner wall of the mounting cavity 31, thereby achieving conductive connection between the stamped and rolled spring structure 10 and the shell 30. Then, the protective cover 40 is fitted and fixed on the front end of the shell 30 to form a complete terminal.

[0040] When in use, this product is installed in the connector, and the pin 20 is inserted into the insertion cavity 131. During the insertion process, the pin 20 first contacts the contact starting point 101 to achieve conduction, and then the pin 20 contacts the contact midpoint 102, which is necessary contact. Finally, the pin 20 contacts the contact end point 103, which is complete contact. This sequential contact method meets the requirements for contact conduction in GB / T20234 and can be better used in the field of new energy vehicles.

[0041] The design focus of the utility model is that the stamping and rolling spring structure of the product adopts metal sheets formed by stamping and rolling. The front end opening of the front ring body is designed to be trumpet-shaped, and a contact starting point is provided on the inner peripheral edge of the rear end of the front ring body. The contact starting point is close to the front end surface of the front ring body, which can achieve rapid contact and signal conduction, meet most of the signal conduction requirements, and cooperate with the front end inner wall of the spring strip to form a contact midpoint, and the middle inner wall of the spring strip to form a contact end point. The pin contacts the contact starting point, the contact midpoint and the contact end point in turn to achieve continuous contact, which fully meets the contact conduction requirements in GB / T20234 and can be well used in the field of new energy vehicles.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stamping and rolling spring structure, characterized in that: It is formed by stamping and rolling metal sheets, and includes a front ring body, a rear ring body and a plurality of spring strips; the front end opening of the front ring body is trumpet-shaped, and the inner peripheral edge of the rear end of the front ring body has a contact starting point; the rear ring body is located directly behind the front ring body, and the outer diameter of the rear ring body is larger than the maximum outer diameter of the front ring body; the plurality of spring strips are arranged at intervals around the circle and extend spirally, and the plurality of spring strips together form an insertion cavity for the insertion of the pin, with large ends and a small middle part, the front end of each spring strip is integrally connected to the rear side of the front ring body, the rear end of each spring strip is integrally connected to the front side of the rear ring body, the front end inner wall of each spring strip has a contact midpoint, and the middle inner wall of each spring strip has a contact end point.

2. The stamping and rolling spring sheet structure according to claim 1, characterized in that: When the contact starting point begins to contact the insertion pin, the distance from the contact starting point to the front end surface of the front ring body is less than 1 mm.

3. The stamping and rolling spring leaf structure according to claim 1, characterized in that: The front ring body is formed by stamping and rolling, and an opening is left on it.

4. The stamping and rolling spring leaf structure according to claim 1, characterized in that: The rear ring body is formed by stamping and rolling into a cylindrical shape with a joint seam left thereon.

5. An application structure of a stamping and rolling reed structure, characterized in that: It includes a shell and a stamped and rolled spring structure as described in any one of claims 1 to 4; the shell has an installation cavity with an opening facing forward; the stamped and rolled spring structure is arranged in the installation cavity, the front ring body and a plurality of spring strips are suspended in the installation cavity, the outer wall of the rear ring body is tightly fitted with the rear end inner wall of the installation cavity, and a protective cover is fixed on the front end of the shell, and a limit ring is extended from the protective cover by bending backward in the opposite direction, and the limit ring is elastically abutted against the inner wall surface of the front end opening of the front ring body.

6. The application structure of the stamping and rolling spring structure according to claim 5 is characterized in that: The front end opening of the installation cavity is in a trumpet shape.

7. The application structure of the stamping and rolling spring structure according to claim 5 is characterized in that: The front end outer wall of the shell is recessed in the annular embedding groove, and the protective sleeve is embedded in the annular embedding groove.

8. The application structure of the stamping and rolling spring structure according to claim 5 is characterized in that: The protective cover is made of stainless steel sheet.

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