A spring-type connection positioning structure and connector

Abstract

The present invention relates to a spring-type connection positioning structure and a connector, wherein the spring-type connection positioning structure includes a metal spring, which is fixedly connected to a base through a clamping arm, and an elastic support platform formed by the abutment of an elastic support beam to limit the movement of the contact piece. The sheet-type contact piece is positioned and connected to the base by lifting the two cantilevers of the elastic support beam and clamping into the elastic support platform; because the abutting part of the elastic support beam is arched, when the contact piece is assembled, the elastic support beam is pulled, the installation force is small, and it is easy to remove and unload; after being assembled in place, the elastic support beam is compressed, the contact piece has a large holding force, and is not easy to fall out. The connector using the above structure has the advantages of simple structure, stable performance, and reliable connection.

Description

Technical Field

[0001] The present invention relates to the field of connectors, and in particular to a spring-type connection positioning structure and a connector. Background Art

[0002] Currently, connector contact fastening methods can be categorized by structure: spring-type, removable snap-on, fixed snap-on, and snap-fit. Removable and removable contacts can be categorized by their removability: removable and non-removable. Spring-type and removable snap-on fastening structures are commonly used for securing wire-end contacts, which are generally removable. Fixed snap-on and snap-fit fastening structures are commonly used for securing board-end contacts, which are generally non-removable.

[0003] While fixed snap-on and fixed snap-fit structures offer simple construction and reliable performance, they cannot be disassembled without loss of functionality after being fixed, making them unsuitable for contact fixation requiring removable components. There are two primary methods for positioning removable contacts: one in which the contact is directly fixed to the substrate (housing). This typically results in a complex substrate (housing) structure, hindering product molding and demolding. The other method secures the contact to the substrate (housing) via an intermediate connector, simplifying the substrate structure and increasing stability.

[0004] As the intermediate connection between the connector contacts and the housing, the stability and reliability of its positioning connection are directly related to the safety of power transmission. If the positioning connection is unreliable, the contacts will shake or even fall off in the connector, affecting the stability and reliability of the electrical connection. If the vehicle is in operation, it may cause "power loss" or "stall" phenomenon, which directly affects the safety of the vehicle.

[0005] Patent CN113823940A discloses a sheet contact fixing assembly and fixing method, which uses Figure 1 In the shrapnel-type fixing method shown, the intermediate connecting part is a positioning shrapnel, which fixes the contact part through the positioning shrapnel to achieve a detachable connection. However, the positioning shrapnel only positions the contact part on one side, and the positioning groove cooperates with the large surface of the contact part. This positioning method makes the contact part prone to deflection, shaking, and non-centering. In addition, the positioning shrapnel has a complex structure and still has the disadvantage of unreliable positioning connection, which affects the stability of the electrical connection. Summary of the Invention

[0006] In view of the defects of the prior art, the purpose of the present invention is to provide a spring-type connection positioning structure and connector, which adopts metal springs to position the sheet-type contacts. The metal springs have a simple structure, strong holding force, and are easy to remove. They can not only realize the detachable connection of the contacts, but also ensure the accurate positioning of the contacts, so that the connector performance is stable and the connection is reliable.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A spring-type connection and positioning structure includes an intermediate connecting piece for realizing detachable installation of a sheet contact piece in a base, wherein the intermediate connecting piece is a metal spring piece, and the metal spring piece is composed of at least an elastic support beam, a connecting bridge and a clamping arm, wherein the elastic support beam is composed of two opposite cantilever beams abutting each other, and the connecting ends of the two cantilever beams are connected to each other through a connecting bridge, and a clamping arm is provided on the outer side of the elastic support beam for connecting with the base to realize fixation of the metal spring piece, and the two cantilever beams form an elastic support platform at the abutment point, and the sheet contact piece is provided with a corresponding clamping groove, and after the sheet contact piece is installed in the base, the clamping groove is clamped with the elastic support platform on the elastic support beam; when the two cantilever beams are pulled apart, the sheet contact piece can be installed or removed, and when the two cantilever beams are compressed, the sheet contact piece can be reliably fixed.

[0009] Furthermore, the two cantilever beams are distributed on both sides of the sheet contact in the thickness direction, and abut against each other by bending inwards to form the elastic support platform.

[0010] The bend includes an introduction section and a positioning section. The introduction section is formed by gradually bending the cantilever beam inward, and the positioning section is formed by vertically bending the cantilever beam. The introduction section and the positioning section are transitionally connected to form the abutment portion of the cantilever beam. Along the extension direction of the cantilever beam, the introduction section, the abutment portion, and the positioning section are distributed on the cantilever beam in sequence.

[0011] Furthermore, the introduction sections of the two cantilever beams gradually approach each other to form a "V"-shaped introduction port for guiding the insertion of the chip contact; the abutting parts of the two cantilever beams abut each other in a natural state, and the positioning sections of the two cantilever beams constitute a positioning platform for positioning the chip contact in the plugging and unplugging direction after being clamped.

[0012] Preferably, the two cantilever beams are symmetrical in structure.

[0013] The metal spring sheet is an integrally formed structure, formed by stamping and bending a metal sheet.

[0014] Furthermore, a clamping positioning groove is provided on the base, and the clamping arm is interference-fitted with the clamping positioning groove to achieve fixation of the metal spring in the base.

[0015] The base is further provided with a limiting groove, which matches the free ends of the two cantilever beams and is used to limit the opening and rebound angles of the elastic support beam.

[0016] The base body is provided with a receiving groove matching the shape of the chip contact piece, which is used to limit the movement and rotation of the chip contact piece in the non-plugging direction.

[0017] Specifically, the clamping slot on the sheet contact is a square hole.

[0018] The present invention further provides a connector, comprising a sheet-type contact and a base, wherein the sheet-type contact is installed in the base via the aforementioned spring-type connection and positioning structure.

[0019] Beneficial effects: The spring-type connection positioning structure and connector of the present invention have a simple structure, low installation force, and are easy to remove. After being assembled in place, they have a strong holding force and are not easy to fall out. They accurately position the contact parts and can ensure stable connector performance and reliable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of positioning spring in the prior art;

[0021] Figure 2 Schematic diagram of the metal dome of the present invention;

[0022] Figure 3 Schematic diagram of the contact element of the present invention;

[0023] Figure 4 Schematic diagram of the substrate of the present invention;

[0024] Figure 5 Schematic diagram of the contact assembly process of the present invention;

[0025] Figure 6 Schematic diagram of the contact piece of the present invention being assembled in place;

[0026] Figure 7 Schematic diagram of metal spring-supported contact piece;

[0027] Figure 8 Schematic diagram of contact removal.

[0028] Reference numerals: 1. Metal spring, 2. Base, 3. Sheet contact, clamping arm A, connecting bridge B, cantilever beam C, elastic support platform D, introduction section E, positioning section F, abutting portion G, clamping positioning groove a, limiting groove c, 31. clamping groove d, DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The present invention describes a spring-type connection and positioning structure that uses an intermediate connector to fix the sheet contact in the base, enabling the sheet contact to be detachably installed in the base. The intermediate connector is a metal spring 1, which serves as an intermediate connector connecting the sheet contact 3 and the base (shell) 2 and is a key component of the present invention.

[0031] like Figure 2As shown, the metal shrapnel 1 is composed of at least an elastic support beam, a connecting bridge B and a clamping arm A, wherein the elastic support beam is composed of two opposite cantilever beams C abutting each other, and the connecting ends of the two cantilever beams C are connected to each other through the connecting bridge B. A clamping arm A is provided on the outer side of the elastic support beam for connecting with the base 2 to fix the metal shrapnel 1. The two cantilever beams C form an elastic support platform D at the abutment point, and the sheet contact 3 is provided with a corresponding clamping groove d. After the sheet contact 3 is installed in the base 2, the clamping groove d is clamped with the elastic support platform D on the elastic support beam; when the two cantilever beams C are separated by tension, the sheet contact 3 can be installed or removed, and when the two cantilever beams C are compressed, the sheet contact 3 can be reliably fixed.

[0032] The two cantilever beams C are symmetrically arranged on both sides of the thickness direction of the chip contact 3 . When the chip contact 3 is positioned in the metal spring 1 , the two cantilever beams C are symmetrical with respect to the thickness center of the chip contact 3 .

[0033] The metal spring in the present invention is manufactured in an integrated manner and can be formed by stamping and bending a metal sheet.

[0034] The two cantilever beams C of the elastic support beam abut against each other by bending inward and arching to form the elastic support platform D. The bend includes an introduction section E and a positioning section F. The introduction section E is formed by gradually bending the middle part of the cantilever beam C inward, and the positioning section F is formed by vertically bending the cantilever beam C. The positioning section F is roughly perpendicular to the cantilever beam C body. The introduction section E and the positioning section F are transitionally connected to form the abutment portion D of the cantilever beam C. Along the extension direction of the cantilever beam C, the introduction section E, the abutment portion G, and the positioning section F are distributed on the cantilever beam C in sequence.

[0035] The introduction sections E of the two cantilever beams C gradually approach each other to form a "V"-shaped introduction port for guiding the insertion of the chip contact 3; the abutment parts G of the two cantilever beams C abut each other in a natural state, and the positioning sections F of the two cantilever beams C constitute a positioning platform for axially positioning (insertion and removal direction) the chip contact 3 after being clamped.

[0036] like Figure 3 As shown, the snap-in groove d on the sheet contact 3 of the present invention is a square hole, which can cooperate with the elastic support platform D on the metal spring 1 to achieve its axial positioning (plugging and unplugging direction); the side surface of the sheet contact 3 with the snap-in groove d is provided with a guiding slope near the insertion end.

[0037] Corresponding to the above-mentioned metal dome 1, Figure 4As shown, the base (insulating shell) 2 of the present invention is provided with a snap-fitting positioning groove a, and the snap-fitting arm A of the metal spring is interference-fitted with the snap-fitting positioning groove a on the base, thereby fixing the metal spring 1 in the base 2; the base 1 is also provided with a limiting groove c, which matches the free ends of the two cantilever beams C and is used to limit the opening and rebound angles of the elastic support beam; in addition, the base 2 is also provided with a receiving groove that matches the shape of the sheet contact 3 and is used to limit the movement and rotation of the sheet contact 3 in the non-axial direction.

[0038] The present invention further provides a connector, comprising a sheet-type contact 3 and a base 2, wherein the sheet-type contact 3 is fixed in the base 2 by the above-mentioned spring-type connection and positioning structure.

[0039] When the present invention is used, the metal spring 1 is first fixed in the base 2, the clamping arm A on the metal spring 1 and the clamping positioning groove a on the base 2 are interference fit, and the free ends of the two cantilever beams C are located in the limiting groove c on the base 2, as shown in FIG. Figure 5 As shown, during installation, the sheet contact 3 is pushed upward from the mounting hole on the base 2, and under the guidance of the "V"-shaped guide port, it continues to move upward, and after the abutment portion G of the cantilever beam C is lifted, the snap-in groove d is snapped into the elastic support platform D, and the positioning connection with the base 2 is achieved, that is, the assembly is in place, as shown in FIG. Figure 6-7 As shown, at this time, under the restriction of the elastic support platform D and the receiving groove on the base 2, the sheet contact 3 can be well positioned in the center in all directions, ensuring reliable connection and stable performance; It should be noted that in order to more clearly show the matching relationship between the metal spring and the contact, the attached Figure 5 a, 6a and Figure 7 The base is hidden in the figure, and only the metal spring and contact parts are shown.

[0040] like Figure 8 As shown, during removal, the two cantilever beams of the elastic support beam are stretched open by using a removal tool. When the distance between the two cantilevers is greater than the thickness of the sheet contact 3, the sheet contact 3 is pulled downward, thereby separating the contact from the base (insulating shell) 2.

[0041] Because the two cantilevers of the elastic support beam in this application are bent inward in an arch shape, they are easy to expand outward but not easy to shrink inward (that is, they are not resistant to tension but are resistant to pressure). Therefore, when the contact piece is assembled, the elastic support beam is subjected to tension, the installation force is small, and it is easy to remove and unload. After being assembled into place, the elastic support beam is subjected to pressure, the contact piece has a strong holding force, and is not easy to fall out.

[0042] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A spring-type connection and positioning structure, comprising an intermediate connecting member, for realizing the detachable installation of a sheet-type contact member (3) in a base body (2), characterized in that: The intermediate connecting member is a metal spring (1), and the metal spring (1) is composed of at least an elastic support beam, a connecting bridge (B) and a clamping arm (A), wherein the elastic support beam is composed of two opposite cantilever beams (C) abutting against each other, and the connecting ends of the two cantilever beams (C) are connected to each other through the connecting bridge (B), and a clamping arm (A) is provided on the outside of the elastic support beam for connecting with the base (2) to achieve the fixation of the metal spring (1), and the two cantilever beams (C) are distributed on both sides of the sheet contact (3) in the thickness direction, and abut against each other by bending inwards and forming an elastic support platform (D) at the abutment point, and the bending includes an introduction section (E) and a positioning section (F), and the positioning section (F) is composed of the cantilever beam (C) The cantilever beam (C) is formed by vertical bending, and the introduction section (E) and the positioning section (F) are transitionally connected to form the abutment section (G) of the cantilever beam (C). The abutment sections (G) of the two cantilever beams (C) abut against each other in a natural state. The positioning sections (F) of the two cantilever beams (C) constitute a positioning platform for positioning the sheet contact (3) in the plugging and unplugging direction after being clamped. The sheet contact (3) is provided with a corresponding clamping groove (d). After the sheet contact (3) is installed in the base body (2), the clamping groove (d) is clamped with the elastic support platform (D) on the elastic support beam; when the two cantilever beams (C) are separated by tension, the sheet contact (3) can be installed or removed, and when the two cantilever beams (C) are compressed, the sheet contact can be reliably fixed.

2. The spring-type connection and positioning structure according to claim 1, characterized in that: The introduction section (E) is formed by gradually inwardly tilting and bending the cantilever beam (C). Along the extension direction of the cantilever beam (C), the introduction section (E), the abutment portion (G), and the positioning section (F) are distributed on the cantilever beam (C) in sequence.

3. The spring-type connection and positioning structure according to claim 2, characterized in that: The lead-in sections (E) of the two cantilever beams (C) gradually approach each other to form a V-shaped lead-in opening for guiding the insertion of the sheet contact (3).

4. The spring-type connection and positioning structure according to claim 3, characterized in that: The two cantilever beams (C) are symmetrical in structure.

5. The spring-type connection and positioning structure according to claim 1, characterized in that: The metal spring (1) is an integrally formed structure, formed by stamping and bending a metal sheet.

6. The spring-type connection and positioning structure according to claim 1, characterized in that: The base (2) is provided with a clamping positioning groove (a), and the clamping arm (A) is interference-fitted with the clamping positioning groove (a), thereby achieving the fixation of the metal spring (1) in the base (2).

7. The spring-type connection and positioning structure according to claim 6, characterized in that: The base (2) is further provided with a limiting groove (c), which matches the free ends of the two cantilever beams (C) and is used to limit the opening and rebound angles of the elastic support beam.

8. The spring-type connection and positioning structure according to claim 6, characterized in that: A receiving groove matching the shape of the chip contact piece (3) is provided in the base body (2) and is used to limit the movement and rotation of the chip contact piece (3) in a non-plugging direction.

9. The spring-type connection and positioning structure according to claim 1, characterized in that: The snap-fitting groove (d) on the sheet contact (3) is a square hole.

10. A connector comprising a sheet contact (3) and a base (2), characterized in that: The sheet contact (3) is installed in the base (2) via the spring-type connection and positioning structure according to any one of claims 1 to 9.

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