Conductive part and installed miniature circuit breaker

Abstract

The utility model belongs to the field of circuit breakers, particularly relates to a conductive piece and a miniature circuit breaker provided with the conductive piece, and aims to solve the problem that an existing conductive piece becomes overheated due to defects of a contact surface of a clamped part and other reasons during operation of the circuit breaker, and provides the following scheme: the conductive piece comprises a load terminal and a connecting plate, the terminal connector hole is axially aligned with the second connector hole, the connecting plate is located at one end of the top of the load terminal and is integrally formed, an extending part is integrally formed at the bottom of the load terminal, and a bending part is integrally formed at the bottom of the extending part. An opening formed by the terminal connector hole and the second connector hole securely engages a conductor connected with a load to the second member while the connection of the second member and the connecting portion is more stable, the ear portion provides an additional conductor through which current can flow from the extension portion to the connecting portion without having to flow through the bending portion, and the connection of the second member and the connecting portion is more stable. Therefore, the temperature of the bending part is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a conductive part and an installed miniature circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and interrupt the current under normal circuit conditions, and can close, carry and interrupt the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague, and those above 3kV are generally called high-voltage electrical appliances.

[0003] Conductive pieces are required in circuit breakers and can be used as static contacts for wiring, but existing conductive pieces become overheated during circuit breaker operation due to defects in the contact surface of the clamped parts and other reasons. Therefore, under high fault conditions, such conductive pieces may fuse to the load or may cause loss of load terminal material. Utility Model Content

[0004] The utility model aims to solve the problem that the conductive sheet in the prior art becomes overheated during the operation of the circuit breaker due to defects in the contact surface of the clamped parts and other reasons. Therefore, in the case of high fault conditions, the conductive sheet may be fused to the load or may cause the loss of load terminal material. A conductive member and a small circuit breaker installed therein are proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A conductive part and a small circuit breaker installed therein, comprising a load terminal and a connecting plate, wherein the connecting plate is located at one end of the top of the load terminal and is integrally formed, an extension portion is integrally formed at the bottom of the load terminal, a bending portion is integrally formed at the bottom of the extension portion, and a connecting portion is integrally formed at one end of the bending portion;

[0007] Two load conductors, the two load conductors are symmetrically arranged and integrally formed on both sides of the extension portion;

[0008] An installation component, the installation component is arranged inside the extension part and is used to install the extension part;

[0009] A protection component is arranged on the top of the connecting portion and is used to protect the bending portion.

[0010] In a possible design, the mounting assembly includes a mounting hole opened in the middle position of the extension part, the mounting hole is used to install the extension part, and two positioning holes are opened in the extension part, and the two positioning holes are symmetrically arranged on both sides of the extension part.

[0011] In one possible design, the protective assembly includes a second component, the second component is located at the top of the connecting part, an ear is integrally formed at the top of the second component, the second component is used in conjunction with the connecting part, the ear is located on one side of the extension part and is used in conjunction with the extension part, and the first component is provided on both sides of the top of the ear.

[0012] In a possible design, a second connector hole is opened inside the second component, and a first connector hole is opened inside the connecting portion, and the first connector hole and the second connector hole are used in coordination.

[0013] In a possible design, shelves are provided on both sides of the top of the second component, and strip holes are provided inside the second component.

[0014] In a possible design, an interference groove is formed on one side of the connecting plate.

[0015] In a possible design, two symmetrically arranged connecting arms are provided on one side of the extension portion.

[0016] A small circuit breaker comprises the conductive member mentioned above and a circuit breaker housing, wherein a buckle is arranged on the top of the circuit breaker housing and a hole for cooperating with a second component is opened on one side of the circuit breaker housing.

[0017] In the present application, when in use, the terminal connector hole and the second connector hole are axially aligned, and the conductor (not shown) extending to the load (not shown) is electrically engaged with the outer surface of the second member. An appropriate collar or other connector can be used to more firmly engage the conductor with the second member. Such a collar generally includes a threaded screw (not shown) or other device that can extend through the combination. The opening formed by the terminal connector hole and the second connector hole is used to firmly engage the conductor connected to the load to the second member. At the same time, the connection between the second member and the connecting portion is more stable. The connection stability of the mounting hole can be ensured by the setting of the connecting arm. The setting of the I-contact groove can ensure the stability of the contact between the connecting plate and other conductors and increase the contact area. The installation position of the mounting hole can be determined by the setting of the positioning hole.

[0018] By conductively engaging the load terminals on opposite sides of the ears, the ears provide additional conductors through which current can flow from the extension portion to the connecting portion without having to flow through the bend, thereby reducing the temperature of the bend. The ears also act as shunts, which conduct or shunt current from the extension portion directly to the load (not shown). Compared with the case where the load is directly connected to the load terminals, the ears provide a higher conductive surface for the clamp joint with the load, and the temperature of the load conductor is therefore reduced at the clamp joint, which reduces the possibility of the load conductor fusing to the load or the loss of load conductor material. In addition, the ears are thermally engaged with the load terminals, so that the ears can conduct heat away from the load terminals on the opposite side of the bend, extending the service life of the device.

[0019] In the utility model, the conductive member and the installed miniature circuit breaker can disperse the current and reduce the temperature of the bending part by protecting the components;

[0020] In the utility model, the conductive member and the small circuit breaker installed thereon can achieve the effect of a quick installation device through the installation assembly;

[0021] In the utility model, the terminal connector hole and the second connector hole are axially aligned, and the opening formed by the terminal connector hole and the second connector hole is used to firmly join the conductor connected to the load to the second component, while the connection between the second component and the connecting part is more stable, and the ear portion provides an additional conductor, through which the current can flow from the extension portion to the connecting portion without having to flow through the bending portion, thereby reducing the temperature of the bending portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structural schematic diagram of a conductive member proposed by the utility model;

[0023] Figure 2 This is a side structural schematic diagram of a conductive member proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of a small circuit breaker after the conductive part is installed, which is proposed by the utility model.

[0025] In the figure: 1, connecting plate; 2, I-contact groove; 3, positioning hole; 4, mounting hole; 5, first component; 6, shelf; 7, first connector hole; 8, second component; 9, connecting portion; 10, second connector hole; 11, strip hole; 12, ear; 13, extension portion; 14, connecting arm; 15, load conductor; 16, load terminal; 17, buckle; 18, circuit breaker housing; 19, bending portion. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Example 1

[0028] Reference Figure 1-3 A conductive part and a small circuit breaker installed thereon, which is used in the field of circuit breakers, comprises: a load terminal 16 and a connecting plate 1, the connecting plate 1 is located at one end of the top of the load terminal 16 and is integrally formed, an extension portion 13 is integrally formed at the bottom of the load terminal 16, a bending portion 19 is integrally formed at the bottom of the extension portion 13, a connecting portion 9 is integrally formed at one end of the bending portion 19, and a contact groove 2 is opened on one side of the connecting plate 1;

[0029] Two load conductors 15, which are symmetrically arranged and integrally formed on both sides of the extension portion 13;

[0030] An installation component, which is arranged inside the extension 13 and is used to install the extension 13. The installation component includes a mounting hole 4 opened in the middle position inside the extension 13, and the mounting hole 4 is used to install the extension 13. Two positioning holes 3 are opened inside the extension 13, and the two positioning holes 3 are symmetrically arranged and opened on both sides of the extension 13. The terminal connector hole and the second connector hole 10 are axially aligned, and the conductor (not shown) extending to the load (not shown) is electrically connected to the outer surface of the second member 8. An appropriate collar or other connector can be used to more firmly connect the conductor to the second member 8. Such a collar usually includes a threaded screw (not shown) or other device that can extend through the combination. The opening formed by the terminal connector hole and the second connector hole 10 is used to firmly connect the conductor connected to the load to the second member 8, and the connection between the second member 8 and the connecting portion 9 is more stable. The connection stability of the mounting hole 4 can be ensured by the setting of the connecting arm 14. The setting of the I-contact groove 2 can ensure the stability of the contact between the connecting plate 1 and other conductors and increase the contact area. The installation position of the mounting hole 4 can be determined by the setting of the positioning hole 3;

[0031] A protection component is arranged at the top of the connecting portion 9 and is used to protect the bending portion 19. The protection component includes a second component 8, which is located at the top of the connecting portion 9. An ear portion 12 is integrally formed on the top of the second component 8. The second component 8 is used in conjunction with the connecting portion 9. The ear portion 12 is located on one side of the extension portion 13 and is used in conjunction with the extension portion 13. First components 5 are arranged on both sides of the top of the ear portion 12. A second connector hole 10 is opened inside the second component 8. A first connector hole 7 is opened inside the connecting portion 9. The first connector hole 7 and the second connector hole 10 are used in conjunction with each other. Shelves 6 are opened on both sides of the top of the second component 8. A strip hole 11 is opened inside the second component 8. By conductively connecting the load terminals 16 on the opposite sides of the ear portion 12, the ear portion 12 is electrically conductively connected to the load terminals 16 on the opposite sides of the ear portion 12. 12 provides an additional conductor through which current can flow from the extension 13 to the connecting portion 9 without having to flow through the bend 19, thereby reducing the temperature of the bend 19. The ear 12 also acts as a shunt, which conducts or shunts current from the extension 13 directly to the load (not shown). Compared with the case where the load is directly connected to the load terminal 16, the ear 12 provides a higher conductive surface for the clamp joint with the load. The temperature of the load conductor 15 is therefore reduced at the clamp joint, which reduces the possibility of the load conductor 15 fusing with the load or the loss of the load conductor 15 material. In addition, the ear 12 is thermally conductively engaged with the load terminal 16, so that the ear 12 can conduct heat away from the load terminal 16 on the opposite side of the bend 19, thereby extending the service life of the device.

[0032] A small circuit breaker includes the above-mentioned conductive member and a circuit breaker housing 18. A buckle 17 is arranged on the top of the circuit breaker housing 18, and a hole for use with the second component 8 is opened on one side of the circuit breaker housing 18.

[0033] Example 2

[0034] refer to Figure 1-3 , improved on the basis of Example 1: two symmetrically arranged connecting arms 14 are provided on one side of the extension portion 13.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A conductive member, characterized in that: include: A load terminal (16) and a connecting plate (1), wherein the connecting plate (1) is located at one end of the top of the load terminal (16) and is integrally formed, an extension portion (13) is integrally formed at the bottom of the load terminal (16), a bent portion (19) is integrally formed at the bottom of the extension portion (13), and a connecting portion (9) is integrally formed at one end of the bent portion (19); Two load conductors (15), the two load conductors (15) are symmetrically arranged and integrally formed on both sides of the extension portion (13); An installation component, which is arranged inside the extension part (13) and is used to install the extension part (13); A protection component is arranged on the top of the connecting portion (9) and is used to protect the bending portion (19).

2. A conductive member according to claim 1, characterized in that: The mounting assembly comprises a mounting hole (4) provided in the middle of the extension part (13), the mounting hole (4) being used for mounting the extension part (13), the extension part (13) having two positioning holes (3) provided in the interior, the two positioning holes (3) being symmetrically arranged and provided on both sides of the extension part (13).

3. A conductive member according to claim 1, characterized in that: The protection assembly comprises a second component (8), the second component (8) is located at the top of the connecting portion (9), an ear portion (12) is integrally formed at the top of the second component (8), the second component (8) is used in conjunction with the connecting portion (9), the ear portion (12) is located at one side of the extension portion (13) and is used in conjunction with the extension portion (13), and the first components (5) are arranged on both sides of the top of the ear portion (12).

4. A conductive member according to claim 3, characterized in that: A second connector hole (10) is provided inside the second component (8), and a first connector hole (7) is provided inside the connecting portion (9); the first connector hole (7) and the second connector hole (10) are used in coordination.

5. A conductive member according to claim 3, characterized in that: Shelves (6) are provided on both sides of the top of the second component (8), and a strip-shaped hole (11) is provided inside the second component (8).

6. The conductive member according to claim 1, characterized in that: A resistance groove (2) is provided on one side of the connecting plate (1).

7. The conductive member according to claim 1, characterized in that: Two symmetrically arranged connecting arms (14) are provided on one side of the extension portion (13).

8. A miniature circuit breaker, characterized in that: It comprises a conductive member as claimed in any one of claims 1 to 7, and also comprises a circuit breaker housing (18), a buckle (17) is arranged on the top of the circuit breaker housing (18), and a hole for cooperating with the second component (8) is opened on one side of the circuit breaker housing (18).

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