阅读说明：本技术 断路器触臂 (Circuit breaker contact arm ) 是由 任少光 任闯 于 2018-06-15 设计创作，主要内容包括：本发明涉及断路器触臂。该断路器触臂包括：触臂主体,所述触臂主体的顶部和底部设有通孔,所述触臂主体的侧面设有长条形通孔,所述触臂主体外壁顶部的直径小于底部的直径。本发明提供的断路器触臂,采用铸造的方式,提高生产率,在两端铸有散热孔并有减重的作用,通电后温升得到控制,产品的使用寿命大大提高。(The invention relates to a circuit breaker contact arm. This circuit breaker touches arm includes: the contact arm comprises a contact arm body, through holes are formed in the top and the bottom of the contact arm body, long strip-shaped through holes are formed in the side face of the contact arm body, and the diameter of the top of the outer wall of the contact arm body is smaller than that of the bottom of the contact arm body. The circuit breaker contact arm provided by the invention adopts a casting mode, the productivity is improved, the heat dissipation holes are cast at the two ends, the weight reduction effect is realized, the temperature rise after electrification is controlled, and the service life of a product is greatly prolonged.)

1. Breaker touches arm, its characterized in that includes: the contact arm comprises a contact arm body, through holes are formed in the top and the bottom of the contact arm body, long strip-shaped through holes are formed in the side face of the contact arm body, and the diameter of the top of the outer wall of the contact arm body is smaller than that of the bottom of the contact arm body.

2. The circuit breaker contact arm of claim 1, wherein the elongated through hole has a length of 120 mm.

3. The circuit breaker contact arm of claim 1, wherein the thickness of the top of the contact arm body is 20 mm.

4. The circuit breaker contact arm as claimed in claim 1, wherein a connection port is formed at the bottom of the contact arm body, a connection groove is formed at the connection port, the roughness of the end surface of the connection port is 3.2 μm, the length of the connection groove is 12mm, and the roughness of the connection groove is 1.6 μm.

5. The circuit breaker contact arm of claim 1, wherein said contact arm body side wall defines a semi-arc shaped opening.

6. The circuit breaker contact arm of claim 1, wherein the contact arm body exterior is sulfur coated with a brown color having a thickness of 1.2-1.6 mm.

7. The circuit breaker contact arm of claim 1, wherein the contact arm body is divided into an upper portion and a lower portion, the upper portion has the same outer diameter with a diameter of 80mm, the lower portion has a side length from top to bottom with a diameter of a truncated cone, the outer wall has a radian of R220, and the bottom has a diameter of 110 mm.

8. The circuit breaker contact arm of claim 1, wherein the contact arm body has a length of 182 mm.

9. The circuit breaker contact arm of claim 1 or 7, wherein the thickness of the upper end surface of the contact arm body is 20 mm.

Technical Field

The invention relates to the technical field of power supply equipment, in particular to a circuit breaker contact arm.

Background

At present, the existing circuit breaker contact arm is in a shape of a circuit breaker contact arm obtained by processing a copper bar material, and has the disadvantages of heavy weight, difficulty in processing and high temperature rise.

Disclosure of Invention

Aiming at the defects in the prior art, the circuit breaker contact arm provided by the invention solves the technical problems and provides the circuit breaker contact arm which is good in heat dissipation, controls temperature rise after power-on and greatly prolongs the service life of a product.

In order to achieve the purpose, the invention provides the following technical scheme:

the circuit breaker touches arm includes: the contact arm comprises a contact arm body, through holes are formed in the top and the bottom of the contact arm body, long strip-shaped through holes are formed in the side face of the contact arm body, and the diameter of the top of the outer wall of the contact arm body is smaller than that of the bottom of the contact arm body.

Wherein, the length of the strip-shaped through hole is 120 mm.

Wherein, the thickness of the top of the contact arm main body is 20 mm.

The bottom of the contact arm main body is provided with a connecting port, a connecting groove is formed in the connecting port, the roughness of the end face of the connecting port is 3.2 mu m, the length of the connecting groove is 12mm, and the roughness of the connecting groove is 1.6 mu m.

Wherein, be equipped with half arc trompil on touching arm main part lateral wall.

Wherein, the outside of the contact arm main body is vulcanized and coated with coffee, and the thickness is 1.2-1.6 mm.

The contact arm main body is divided into an upper part and a lower part, the outer diameter of the upper part is the same, the diameter is 80mm, the diameter side length of the lower part from top to bottom is in a round table shape, the radian of the outer wall is R220, and the diameter of the bottom is 110 mm.

Wherein, the length of the contact arm main body is 182 mm.

Wherein, the thickness of the upper end surface of the contact arm main body is 20 mm.

The invention has the beneficial effects that: the circuit breaker contact arm provided by the invention adopts a casting mode, the productivity is improved, the heat dissipation holes are cast at the two ends, the weight reduction effect is realized, the temperature rise after electrification is controlled, and the service life of a product is greatly prolonged.

For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.

Drawings

The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a circuit breaker contact arm of the present invention.

Figure 2 is a cross-sectional view of the circuit breaker contact arm of the present invention.

Fig. 3 is a bottom view of the circuit breaker contact arm of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Referring to fig. 1 to 3, the circuit breaker contact arm includes: touch arm main part 1, the top and the bottom of touching arm main part 1 are equipped with through-hole 2, the side of touching arm main part 1 is equipped with rectangular shape through-hole 3, the diameter that touches 1 outer wall top of arm main part is less than the diameter of bottom.

Further, the length of the strip-shaped through hole 5 is 120 mm.

Further, the thickness of the top of the contact arm main body 1 is 20 mm.

Further, a connecting port 4 is arranged at the bottom of the contact arm main body 1, a connecting groove is arranged at the connecting port 4, the roughness of the end face of the connecting port 4 is 3.2 microns, the length of the groove is 12mm, and the roughness of the groove is 1.6 microns.

Furthermore, a semi-arc-shaped opening is formed in the side wall of the contact arm main body 1.

Furthermore, the contact arm main body 1 is coated with coffee color by vulcanization and has a thickness of 1.2-1.6 mm.

Further, the contact arm main body 1 is divided into an upper part and a lower part, the outer part of the upper part has the same diameter, the diameter is 80mm, the side length of the diameter of the lower part from top to bottom is in a circular truncated cone shape, the radian of the outer wall is R220, and the diameter of the bottom is 110 mm.

Further, the length of the contact arm main body 1 is 182 mm.

Further, the thickness of the upper end surface of the contact arm main body 1 is 20 mm.

The contact arm is mainly used in a contact box of a high-voltage switch cabinet, and the through hole 2 at the top of the contact arm main body 1 is connected with a copper bar through a bolt. The bottom is connected with the binding spring contact, and the mutual plugging and unplugging between the binding spring contact and the binding spring contact realizes the functions of electrifying and powering off. The contact arm body 1 described in this patent is dimensioned to be the optimum size through a number of tests.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.