Long service life stationary contact

Abstract

The utility model relates to static contact technical field especially long service life's static contact, including turning part, the turning part both ends are integrative with first connecting part and second connecting part respectively, the first connecting part lower extreme integrative with adapter, the adapter lower extreme integrative with mounting portion, the mounting portion surface is provided with mounting hole, the mounting portion rear surface is equipped with a plurality of convex, a plurality of the convex even circumferential array distribution is outside mounting hole, the adapter both sides surface all are equipped with clamping wing. The utility model discloses through the clamping wing of setting, can through the forceps or handheld clamping wing, prevents static contact to appear the phenomenon of turning over, will the convex put into the recess that circuit breaker corresponded to set up, then through screw penetration mounting hole to static contact of fixing, through the cooperation of convex and the recess that circuit breaker corresponded to set up, prevents static contact to shift, avoids the wrong position of installation.

Description

Technical Field

[0001] This utility model relates to the field of stationary contact technology, and in particular to a stationary contact with a long service life. Background Technology

[0002] A molded case circuit breaker is a type of circuit breaker that can automatically disconnect the power supply when the current exceeds the trip setting. The molded case refers to the plastic insulating shell. A molded case circuit breaker has terminals at both ends, and the stationary contact is used to connect the terminal and the moving contact.

[0003] For example, the authorized notification number "CN220914147U" is named "Stationary Contact and Circuit Breaker". It guides and diffuses the electric arc through the diffuser and can increase the cooling area of ​​the arc ignition angle, so that the arc ignition angle can be cooled down more quickly, thereby improving the arc ignition effect and heat dissipation effect.

[0004] The above-mentioned and existing technologies have the following defects: when installing the stationary contact, due to the small internal space of the circuit breaker, the stationary contact is prone to flipping; and when tightening the screws, due to the small internal space of the circuit breaker, the stationary contact is prone to displacement, resulting in misalignment. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a static contact with a long service life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a long-life static contact, including a bend, with a first connecting part and a second connecting part integrally formed at both ends of the bend. The first connecting part has an assembly hole on its surface. The second connecting part has a contact piece on its surface away from the first connecting part. The lower end of the first connecting part has an integrally formed adapter part. The lower end of the adapter part has an integrally formed mounting part. The surface of the mounting part has a mounting hole. The rear surface of the mounting part has multiple protrusions. The multiple protrusions are evenly distributed in a circumferential array outside the mounting hole. Both sides of the adapter part have clamping wings. The two clamping wings are arranged from back to front and away from each other.

[0008] Preferably, the cross-section of the clamping wing is trapezoidal.

[0009] Preferably, each of the two clamping wings has a clamping groove on one side surface facing away from each other, and the inner wall of the clamping groove is provided with a plurality of first anti-slip blocks.

[0010] Preferably, each of the two clamping wings has a plurality of second anti-slip blocks on its opposite side surface.

[0011] Preferably, the junction between the turning part and the first connecting part is provided with multiple reinforcing blocks.

[0012] Preferably, a concealed groove is provided on the front side of the mounting hole.

[0013] Preferably, the front surface of the mounting part is provided with an operating groove, the inner rear wall of the operating groove is provided with a clamping block, and both sides of the clamping block are provided with snap-fit ​​grooves.

[0014] The present invention proposes a stationary contact with a long service life, which has the following advantages: the clamping wings can be used with pliers or by hand to prevent the stationary contact from flipping over. The protrusion is placed into the corresponding groove of the circuit breaker, and then the stationary contact is fixed by screws through the mounting holes. The cooperation between the protrusion and the corresponding groove of the circuit breaker prevents the stationary contact from shifting and avoids misalignment during installation. Attached Figure Description

[0015] Figure 1 This is a front structural diagram of the present invention;

[0016] Figure 2 This is an enlarged view of position A in this utility model;

[0017] Figure 3 This is a schematic diagram of the rear structure of the present invention;

[0018] Figure 4 This is an enlarged view of position B of this utility model.

[0019] In the figure: 1. Turning part; 2. First connecting part; 3. Assembly hole; 4. Second connecting part; 5. Contact piece; 6. Adapter part; 7. Mounting part; 8. Mounting hole; 9. Protrusion; 10. Clamping wing; 11. Clamping groove; 12. First anti-slip block; 13. Second anti-slip block; 14. Reinforcing block; 15. Concealed groove; 16. Operating groove; 17. Clamping block; 18. Snap-fit ​​groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4A long-life static contact includes a bend 1, with a first connecting part 2 and a second connecting part 4 integrally formed at both ends of the bend 1. The surface of the first connecting part 2 is provided with an assembly hole 3. The surface of the second connecting part 4 away from the first connecting part 2 is provided with a contact piece 5. The lower end of the first connecting part 2 is integrally formed with a transition part 6. The lower end of the transition part 6 is integrally formed with a mounting part 7. The surface of the mounting part 7 is provided with a mounting hole 8. The rear surface of the mounting part 7 is provided with multiple protrusions 9, which are evenly distributed in a circumferential array outside the mounting hole 8. Both sides of the transition part 6 are provided with clamping wings 10, which are arranged from back to front away from each other. This arrangement makes it easy to hold by hand or with pliers.

[0022] The clamping wing 10 has a trapezoidal cross-section. Setting it to a trapezoidal shape saves more material and is more economical and practical than setting it to a rectangle.

[0023] Each of the two gripping wings 10 has a gripping groove 11 on one of its opposite sides, and the inner wall of the gripping groove 11 is provided with a plurality of first anti-slip blocks 12. By inserting the tip of the pliers into the gripping groove 11, the gripping is more secure, and at the same time, the plurality of first anti-slip blocks 12 provide an anti-slip function.

[0024] Multiple second anti-slip blocks 13 are provided on the opposite side surfaces of the two clamping wings 10. The multiple second anti-slip blocks 13 serve to prevent slippage.

[0025] Multiple reinforcing blocks 14 are provided at the connection between the turning part 1 and the first connecting part 2. The multiple reinforcing blocks 14 make the connection between the turning part 1 and the first connecting part 2 more secure.

[0026] A concealed groove 15 is provided on the front side of the mounting hole 8. The concealed groove 15 can hide part of the screw head, allowing the screw to be inserted more deeply.

[0027] The front surface of the mounting part 7 has an operating groove 16, and the inner rear wall of the operating groove 16 has a clamping block 17. Both sides of the clamping block 17 have snap-fit ​​grooves 18. By using pliers, the clamping block 17 can be clamped, making it easy to install the stationary contact.

[0028] During installation, the stationary contact can be held by pliers or by hand using the clamping wing 10 to prevent it from flipping over. The protrusion 9 is placed into the corresponding groove on the circuit breaker, and then the stationary contact is fixed by screws through the mounting hole 8. The cooperation between the protrusion 9 and the corresponding groove on the circuit breaker prevents the stationary contact from shifting and avoids misalignment during installation.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A stationary contact with a long service life, comprising a bend (1), characterized in that, The turning part (1) has a first connecting part (2) and a second connecting part (4) integrally formed at both ends. The first connecting part (2) has an assembly hole (3) on its surface. The second connecting part (4) has a contact piece (5) on its side away from the first connecting part (2). The first connecting part (2) has a transition part (6) integrally formed at its lower end. The transition part (6) has an installation part (7) integrally formed at its lower end. The installation part (7) has an installation hole (8) on its surface. The installation part (7) has multiple protrusions (9) on its rear surface. The multiple protrusions (9) are evenly distributed in a circular array outside the installation hole (8). The transition part (6) has clamping wings (10) on both sides. The two clamping wings (10) are arranged from back to front away from each other.

2. A stationary contact with a long service life according to claim 1, characterized in that, The cross-section of the clamping wing (10) is trapezoidal.

3. A stationary contact with a long service life according to claim 1, characterized in that, Each of the two clamping wings (10) has a clamping groove (11) on one side surface facing away from each other, and the inner wall of the clamping groove (11) is provided with a plurality of first anti-slip blocks (12).

4. A stationary contact with a long service life according to claim 1, characterized in that, Multiple second anti-slip blocks (13) are provided on the opposite side surfaces of the two clamping wings (10).

5. A stationary contact with a long service life according to claim 1, characterized in that, Multiple reinforcing blocks (14) are provided at the connection between the turning part (1) and the first connecting part (2).

6. A stationary contact with a long service life according to claim 1, characterized in that, A concealed groove (15) is provided on the front side of the mounting hole (8).

7. A stationary contact with a long service life according to claim 1, characterized in that, The front surface of the mounting part (7) is provided with an operation groove (16), and the inner wall of the operation groove (16) is provided with a clamping block (17). Both sides of the clamping block (17) are provided with snap-fit ​​grooves (18).

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