Vibration-resistant metal contacts

Abstract

This utility model discloses an anti-vibration metal contact, including a plastic shell, a terminal, and a clamp. The terminal holding part of the terminal is fixed inside the insulating shell. The terminal elastic arm fixed to one end of the terminal holding part is used to elastically clamp the metal insert. The clamp includes a fixing sleeve that can be fixed to the outside of the terminal holding part and elastic fingers located on the outside of the terminal elastic arm. The paired elastic fingers are fixed to one end of the fixing sleeve in a cantilever structure. The elastic fingers are bent into a V-shape. The part of the elastic finger near the root of the fixing sleeve forms an elastic inner finger, and the free end of the elastic finger away from the fixing sleeve forms an elastic outer finger. The elastic inner finger is close to the outer surface of the terminal elastic arm to provide elastic clamping force to the terminal elastic arm. The end of the elastic outer finger facing away from the elastic inner finger elastically abuts against the inner wall of the plastic shell. This utility model enhances the contact force of the terminal elastic arm on the metal insert. At the same time, it can make the product have a more stable contact effect and better vibration resistance.

Description

Technical Field

[0001] This utility model relates to a connector, and more particularly to a vibration-resistant metal contact. Background Technology

[0002] Currently, in order to enable metal contacts to carry high current, a sleeve is installed on the terminal. The elasticity of the sleeve presses against the flat contact, providing contact force to the contact.

[0003] Because of the gap between the terminal elastic arm and the insulating shell, the contact point between the terminal and the metal insert in this type of metal contact is still at risk of momentary breakage under vibration. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a vibration-resistant metal contact, which can make the terminals maintain a more stable contact state and provide better vibration resistance.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a vibration-resistant metal contact, including a plastic shell, a terminal made of conductive material, and a clamp. The terminal includes a terminal holding part and a terminal elastic arm. The terminal holding part can be fixedly inserted into the insulating shell. A pair of terminal elastic arms are fixedly mounted on one end of the terminal holding part in a cantilever structure. The free ends of the pair of terminal elastic arms are close to each other to elastically clamp the metal insert, thereby realizing the connection between the terminal and the metal insert. The clamp includes a fixing sleeve and an elastic finger. It can be fixedly installed on the outside of the terminal holding part of the terminal. The pair of elastic fingers are fixed on one end of the fixing sleeve in a cantilever structure. The pair of elastic fingers are arranged opposite each other on the outside of the pair of terminal elastic arms. The elastic fingers are bent into a V-shaped structure. The part of the elastic finger near the root of the fixing sleeve forms an elastic inner finger, and the free end of the elastic finger away from the fixing sleeve forms an elastic outer finger. The elastic inner finger is close to the outer surface of the terminal elastic arm to provide elastic clamping force to the terminal elastic arm. The end of the elastic outer finger opposite to the elastic inner finger elastically abuts against the inner wall of the plastic shell.

[0006] As a further improvement of this utility model, the end of the elastic outer finger facing away from the elastic inner finger forms a bent edge toward the direction of the terminal elastic arm, and the bent edge forms an arc-shaped contact surface on the side wall of the elastic outer finger, and the arc-shaped contact surface is in close contact with the inner side wall of the plastic shell.

[0007] As a further improvement of this utility model, the fixing sleeve of the sleeve is a ring-shaped structure, and the sleeve is fixedly sleeved on the outside of the holding part of the terminal or fixedly sleeved on the outside of the root of the elastic arm of the terminal.

[0008] As a further improvement of this utility model, the terminal elastic arm includes a flat plate-shaped root and multiple elastic contact arms. The multiple elastic contact arms are integrally formed at one end of the root of the terminal elastic arm. The roots of the paired terminal elastic arms are arranged in parallel and spaced apart. The free ends of the elastic contact arms of the paired terminal elastic arms extend obliquely close to each other. The sleeve is tightly fitted on the outside of the roots of the paired terminal elastic arms.

[0009] As a further improvement of this utility model, the width of the root of the terminal elastic arm is smaller than the width of the retaining part, and the sleeve stops on the stepped surface formed between the root of the terminal elastic arm and the retaining part.

[0010] As a further improvement of this utility model, the sleeve is an integral structure made of metal sheet by stamping and bending.

[0011] As a further improvement of this utility model, the terminal holding part is a ring-shaped structure, and an outwardly protruding fastener and a hollow notch structure are formed on the side wall of the terminal holding part. The insulating shell forms a T-shaped structure with one end width dimension smaller than the other end width dimension. The terminal is inserted into the insulating shell from the other end toward one end. The outwardly protruding fastener on the side wall of the terminal holding part stops on the stepped surface formed between the two ends of the inner side of the insulating shell to limit the insertion depth of the terminal. An inwardly protruding limiting structure is also provided on the inner side wall of the other end of the insulating shell. The inwardly protruding limiting structure can be inserted into the hollow notch structure on the side wall of the terminal holding part to fix and position the terminal holding part.

[0012] The beneficial technical effects of this utility model are as follows: By bending the spring fingers of the sleeve into a V-shaped structure, the elastic inner finger of the sleeve tightly contacts the elastic arm of the terminal, providing pressure to the elastic arm of the terminal and enhancing the contact force of the elastic arm of the terminal to the metal insert. At the same time, under vibration, the elastic outer finger squeezes against the inner wall of the insulating shell, which can eliminate the contact variation caused by the gap between the elastic arm of the terminal and the insulating shell, thereby enabling the product to have a more stable contact effect and better vibration resistance. Attached Figure Description

[0013] Figure 1 This is a front view illustrating the structural principle of this utility model;

[0014] Figure 2 This is a perspective view of the terminal clamping metal insert of this utility model.

[0015] Figure 3 This is a perspective view of the terminal and sleeve of this utility model in an assembled state.

[0016] Figure 4 This is a perspective view of the terminal clamping metal insert of the present invention with a sleeve clamp.

[0017] Figure 5 This is a perspective view of the clip of this utility model;

[0018] Figure 6 This is the main view of the sleeve of this utility model;

[0019] Figure 7 This is a right view of the sleeve clip of this utility model;

[0020] Figure 8 This is a top view of the clip of this utility model. Detailed Implementation

[0021] Example: A vibration-resistant metal contact includes a plastic shell 1, a terminal 2 made of conductive material, and a clamp 3. The terminal 2 includes a terminal holding part 21 and a terminal elastic arm 22. The terminal holding part 21 can be fixedly inserted into the insulating shell. A pair of terminal elastic arms 22 are fixedly mounted on one end of the terminal holding part 21 in a cantilever structure. The free ends of the pair of terminal elastic arms 22 are close to each other to elastically clamp a metal insert 4, thereby realizing the connection between the terminal 2 and the metal insert 4. The clamp 3 includes a fixing sleeve 31 and an elastic finger 32. The fixing sleeve 31 can be fixedly installed on the terminal holding part 2 of the terminal 2. On the outer side, a pair of elastic fingers 32 are fixedly mounted on one end of the fixing sleeve 31 in a cantilever structure. The pair of elastic fingers 32 are positioned opposite each other on the outer side of the pair of terminal elastic arms 22. The elastic fingers 32 are bent into a V-shaped structure. The part of the elastic finger 32 near the root 221 of the fixing sleeve 31 forms an inner elastic finger 321, and the free end of the elastic finger 32 away from the fixing sleeve 31 forms an outer elastic finger 322. The inner elastic finger 321 is close to the outer surface of the terminal elastic arm 22 to provide elastic clamping force to the terminal elastic arm 22. The end of the outer elastic finger 322 facing away from the inner elastic finger 321 is elastically pressed against the inner wall of the plastic shell 1.

[0022] In use, the contact point at the end of the terminal elastic arm 22 of terminal 2 clamps the metal insert 4 to achieve conduction, thereby transmitting electrical signals. The elastic inner finger 321 of the sleeve 3 is tightly attached to the terminal elastic arm 22 of terminal 2, which can increase the strength of the terminal elastic arm 22 and provide pressure to the terminal elastic arm 22, so that the terminal elastic arm 22 has a high contact force, and its contact point is well held by the metal insert 4.

[0023] The end of the elastic outer finger 322 facing away from the elastic inner finger 321 forms a bent edge toward the terminal elastic arm 22. The bent edge forms an arc-shaped contact surface 323 on the side wall of the elastic outer finger 322, and the arc-shaped contact surface 323 is in close contact with the inner side wall of the plastic shell 1. The arc-shaped bend in contact with the plastic shell 1 can prevent jamming.

[0024] The fixing sleeve 31 of the sleeve clamp 3 is a ring-shaped structure. The fixing sleeve 31 of the sleeve clamp 3 is located on the outside of the holding part of the terminal 2 or on the outside of the root 221 of the elastic arm 22 of the terminal. During assembly, the sleeve clamp 3 and the terminal 2 are fixedly connected by tightly fitting together. The assembly is convenient and the structure is simple. In addition, the sleeve clamp 3 can also be formed on the holding part of the terminal 2 by riveting or welding. This is an equivalent replacement structure that can be easily conceived by those skilled in the art based on this patent and is within the protection scope of this patent.

[0025] The terminal elastic arm 22 includes a flat root 221 and multiple elastic contact arms 222. The multiple elastic contact arms 222 are integrally formed on one end of the root 221 of the terminal elastic arm 22. The root 221s of the paired terminal elastic arms 22 are arranged in parallel and spaced apart. The free ends of the elastic contact arms 222 of the paired terminal elastic arms 22 extend obliquely close to each other. The sleeve 3 is tightly fitted on the outside of the root 221s of the paired terminal elastic arms 22.

[0026] This structure facilitates the assembly of the sleeve clip 3. During assembly, the sleeve clip 3 is inserted from the free end of the terminal elastic arm 22 toward the root 221. The elastic contact arm 222 of the terminal elastic arm 22 guides the sleeve clip 3. A groove matching the fixing sleeve 31 of the sleeve clip 3 can also be formed on the flat plate structure of the root 221 of the terminal elastic arm 22, or a protruding ridge can be formed on the flat plate structure of the root 221 of the terminal elastic arm 22 near the elastic contact arm 222. When the fixing sleeve 31 of the sleeve clip 3 enters the groove or crosses the protruding ridge, it is blocked to prevent it from detaching from the terminal 2.

[0027] The width of the root 221 of the terminal elastic arm 22 is smaller than the width of the retaining part, and the sleeve 3 stops on the stepped surface formed between the root 221 of the terminal elastic arm 22 and the retaining part. The width of the root 221 of the terminal elastic arm 22 is made into a tapered structure so that it forms a step with the retaining part, which is used to block the fixing sleeve 31 of the sleeve 3 and realize the limiting of the position of the fixing sleeve 31 and the terminal 2.

[0028] The sleeve 3 is an integral structure made of metal sheet by stamping and bending.

[0029] The holding part of the terminal 2 is a ring-shaped structure. The side wall of the terminal holding part 21 has an outwardly protruding fastener 211 and a hollowed-out notch structure 212. The insulating shell has a T-shaped structure with one end wider than the other. The terminal 2 is inserted into the insulating shell from the other end towards the other end. The outwardly protruding fastener 211 on the side wall of the terminal holding part 21 stops at the stepped surface formed between the two ends of the inner side of the insulating shell, thus limiting the insertion depth of the terminal 2. An inwardly protruding limiting structure is also provided on the inner side wall of the other end of the insulating shell. This inwardly protruding limiting structure can be inserted into the hollowed-out notch structure 212 on the side wall of the terminal holding part 21 to fix and position the terminal holding part 21. When the terminal 2 is assembled inside the plastic shell 1, the terminal 2 is inserted from the other end towards the other end of the insulating shell. When inserted into place, the outwardly protruding fastener on the terminal 2 is blocked by the stepped surface on the inner side wall of the insulating shell, thus limiting the insertion depth of the terminal 2 and preventing damage to the end of the terminal elastic arm 22 due to excessive insertion.

Claims

1. A vibration-resistant metal contact, comprising a plastic shell (1), a terminal (2) made of conductive material, and a clamp (3), wherein the terminal comprises a terminal holding part (21) and a terminal elastic arm (22), the terminal holding part being fixedly inserted into the insulating shell, a pair of terminal elastic arms being fixedly disposed on one end of the terminal holding part in a cantilever structure, the free ends of the pair of terminal elastic arms being close to each other for elastically clamping a metal insert (4), thereby realizing the connection between the terminal and the metal insert, the clamp comprising a fixing sleeve (31) and elastic fingers (32), the fixing sleeve being fixedly installed on the outside of the terminal holding part of the terminal, a pair of elastic fingers being fixedly disposed on one end of the fixing sleeve in a cantilever structure, the pair of elastic fingers being disposed one-to-one opposite on the outside of the pair of terminal elastic arms, characterized in that: The elastic finger is bent into a V-shaped structure. The part of the elastic finger near the root of the fixed sleeve forms an elastic inner finger (321), and the free end of the elastic finger away from the fixed sleeve forms an elastic outer finger (322). The elastic inner finger is close to the outer surface of the terminal elastic arm to provide elastic clamping force to the terminal elastic arm, and the end of the elastic outer finger opposite to the elastic inner finger is elastically pressed against the inner wall of the plastic shell.

2. The shock resistant metal contact of claim 1, wherein: The end of the elastic outer finger facing away from the elastic inner finger forms a bent edge toward the direction of the terminal elastic arm. The bent edge forms an arc-shaped contact surface (323) on the side wall of the elastic outer finger. The arc-shaped contact surface is in close contact with the inner side wall of the plastic shell.

3. The shock resistant metal contact of claim 2, wherein: The fixing sleeve of the clamp is a ring-shaped structure, and the clamp is fixedly sleeved on the outside of the holding part of the terminal or fixedly sleeved on the outside of the root of the elastic arm of the terminal.

4. The shock resistant metal contact of claim 3, wherein: The terminal elastic arm includes a flat root (221) and multiple elastic contact arms (222). The multiple elastic contact arms are integrally formed at one end of the root of the terminal elastic arm. The roots of the paired terminal elastic arms are arranged in parallel and spaced apart. The free ends of the elastic contact arms of the paired terminal elastic arms extend at an angle close to each other. The sleeve is tightly fitted on the outside of the roots of the paired terminal elastic arms.

5. The shock resistant metal contact of claim 4, wherein: The width of the root of the terminal elastic arm is smaller than the width of the retaining part, and the sleeve stops on the stepped surface formed between the root of the terminal elastic arm and the retaining part.

6. The shock resistant metal contact of claim 1, wherein: The sleeve is an integral structure made of metal sheet by stamping and bending.

7. The shock resistant metal contact of claim 1, wherein: The terminal holding part is a ring-shaped structure. The side wall of the terminal holding part has an outwardly protruding fastener (211) and a hollow notch structure (212). The insulating shell has a T-shaped structure with one end width smaller than the other end width. The terminal is inserted into the insulating shell from the other end toward the other end. The outwardly protruding fastener on the side wall of the terminal holding part stops on the stepped surface formed between the two ends of the inner side of the insulating shell to limit the insertion depth of the terminal. The inner side wall of the other end of the insulating shell is also provided with an inwardly protruding limiting structure. The inwardly protruding limiting structure can be inserted into the hollow notch structure on the side wall of the terminal holding part to fix and position the terminal holding part.

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