Contact conducting rod of vacuum circuit breaker

Abstract

The utility model relates to a contact conducting rod of a vacuum circuit breaker. The technical problem to be solved by the utility model is to provide the contact conducting rod of the vacuum circuit breaker, which is tight in contact. According to the technical scheme, the conductive rod comprises a conductive rod connecting part and a conductive rod contact part, the lower end of the conductive rod connecting part is provided with a conductive rod lower thread, the conductive rod contact part is provided with a conductive rod penetrating part, a conductive rod front guide part, a conductive rod conductive part and a conductive rod rear blocking part, the front end of the conductive rod front guide part is provided with a conductive rod front conical surface, and the conductive rod rear blocking part is provided with a conductive rod rear conical surface. A conducting rod orientation block is arranged at the front end of the conducting rod penetrating part, and the thickness of the conducting rod orientation block is smaller than the height of the partition plate positioning groove. The utility model has the advantages that the conducting rod orientation block enables the conducting rod to be fixed in the positioning groove of the partition plate after being butted, so that the conducting rod is not easy to move back and forth and loosen due to vibration influence, and the connection is tighter and firmer.

Description

Technical Field

[0001] The utility model relates to a contact conductive rod of a vacuum circuit breaker. Background Art

[0002] A vacuum circuit breaker contact conductive rod is a conductive rod used in a vacuum circuit breaker to connect with a plum blossom contact. The plum blossom contact comprises a plum blossom partition plate (41), a stationary contact (42) arranged at intervals around the plum blossom partition plate (41), and a return spring (43) sleeved outside the stationary contact (42). The conductive rod generally comprises a conductive rod contact portion and a conductive rod body portion connected and fixed to a base. The stationary contact (42) comprises a stationary contact portion (45) in contact with the conductive rod contact portion and a stationary contact limiting groove (46) for clamping the plum blossom partition plate (41). A partition plate clamping opening (47) for the stationary contact (42) arranged at intervals around a circular arc is provided on the outer side of the plum blossom partition plate (41). A partition plate passage is provided inside the plum blossom partition plate (41). The plum blossom partition plate (41) is provided with partition plate orientation openings (48) at intervals around a circular arc at the partition plate through hole (52); the back of the plum blossom partition plate (41) is provided with a partition plate docking block (49) staggered with the partition plate orientation opening (48); the partition plate docking block (49) is provided with a partition plate positioning groove (50); the plum blossom partition plate (41) is provided with a partition plate protrusion (51) at the partition plate positioning groove (50); the existing vacuum circuit breaker contact conductive rod is found to be easily affected by factors such as vibration during actual use, resulting in loosening during the contact between the existing vacuum circuit breaker contact and the plum blossom contact, making it easy to shift forward and backward and have poor contact, and the service life of the conductive rod is greatly reduced. Improvements are made in view of this. Utility Model Content

[0003] In order to solve the above problems, the technical problem to be solved by the utility model is to provide a vacuum circuit breaker contact conductive rod which is not easy to loosen and has tight contact.

[0004] The technical solution adopted by the conductive rod of the contact of the vacuum circuit breaker of the utility model: comprises a conductive rod connecting part and a conductive rod contact part, the lower end of the conductive rod connecting part is provided with a conductive rod lower thread connected to the base, and is characterized in that the conductive rod contact part is provided with a conductive rod penetration part connected to the through hole of the partition plate, a conductive rod front guide part, a conductive rod conductive part for contacting the static contact contact part, and a conductive rod rear stopper from the outside to the inside, the front end of the conductive rod front guide part is provided with a conductive rod front cone surface for facilitating the introduction of the static contact contact part, the front end of the conductive rod penetration part is provided with conductive rod orientation blocks corresponding to the orientation opening of the partition plate at intervals around the arc, and the thickness of the conductive rod orientation block is less than the height of the positioning groove of the partition plate;

[0005] A conductive rod conductive groove is provided inside the conductive part of the conductive rod for strengthening the contact with the contact part of the static contact, the outer diameter of the front guide part of the conductive rod is the same as the outer diameter of the rear stop part of the conductive rod, the outer diameter of the front guide part of the conductive rod is larger than the outer diameter of the conductive part of the conductive rod, and the outer diameter of the conductive part of the conductive rod is larger than the outer diameter of the conductive part of the conductive rod.

[0006] A directional block limiting opening corresponding to the protrusion of the partition plate is provided on one side of the conductive rod directional block close to the front guide portion of the conductive rod, and the depth of the directional block limiting opening is 0.2 mm to 0.5 mm.

[0007] The conductive rod directional blocks are of square structure and there are two of them.

[0008] The conductive rod connecting portion is provided with a conductive rod upper thread near the conductive rod contact portion.

[0009] The rear end of the front guide portion of the conductive rod is provided with a rear inclined surface of the conductive rod which facilitates the moving out of the contact portion of the static contact.

[0010] The conductive rod connecting portion and the conductive rod contact portion are manufactured by integral extrusion.

[0011] The advantages of the conductive rod of the contact of the vacuum circuit breaker of the utility model are: the conductive rod directional block can make the conductive rod less susceptible to vibration and forward and backward movement and loosening after being connected to the conductive rod by being fixed in the positioning groove of the partition plate, and the connection is tighter and firmer; the conductive groove of the conductive rod can increase the contact area, make the contact more stable, and improve the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0013] Figure 1 This is a schematic diagram of the structure of the contact conductive rod of the vacuum circuit breaker of the utility model;

[0014] Figure 2 yes Figure 1 A magnified image of

[0015] Figure 3 It is a structural schematic diagram of the plum blossom contact of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the static contact of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the plum blossom partition plate of the utility model. DETAILED DESCRIPTION

[0018] like Figure 1-5As shown, the utility model relates to a vacuum circuit breaker contact conductive rod, comprising a conductive rod connecting portion 1 and a conductive rod contact portion 2, wherein the lower end of the conductive rod connecting portion 1 is provided with a conductive rod lower thread 3 connected to the base, and the conductive rod contact portion 2 is provided with a conductive rod penetration portion 6 connected to the partition plate through hole 52, a conductive rod front guide portion 7, a conductive rod conductive portion 8 for contacting the static contact portion 45, and a conductive rod rear stop portion 9 in sequence from the outside to the inside, and the front end of the conductive rod front guide portion 7 is provided with a guide for facilitating the introduction of the static contact portion 45 The front cone surface 12 of the pole, the front end of the conductive rod penetration portion 6 is provided with conductive rod orientation blocks 11 corresponding to the partition plate orientation opening 48 at intervals around the arc, the thickness of the conductive rod orientation block 11 is less than the height of the partition plate positioning groove 50, after the conductive rod orientation block 11 is docked and inserted into the partition plate orientation opening 48, the plum blossom contact is fully rotated so that the conductive rod orientation block 11 is placed in the partition plate positioning groove 50, under the action of the partition plate positioning groove 50, the conductive rod is not easily affected by vibration that causes it to move back and forth and loosen, and the connection is tighter and firmer.

[0019] A conductive rod conductive groove 13 for strengthening the contact with the static contact contact portion 45 is arranged inside the conductive rod conductive portion 8. The outer diameter of the conductive rod front guide portion 7 is the same as the outer diameter of the conductive rod rear stop portion 9. The outer diameter of the conductive rod front guide portion 7 is larger than the outer diameter of the conductive rod conductive portion 8. The outer diameter of the conductive rod conductive portion 8 is larger than the outer diameter of the conductive rod penetration portion 6. The conductive rod penetration portion 6 can easily pass through the partition plate through hole 52. The conductive rod front guide portion 7 and the conductive rod rear stop portion 9 can prevent the static contact 42 from falling off. The conductive rod conductive portion 8 plays a role of close contact with the static contact contact portion 45. The conductive rod conductive groove 13 can strengthen the contact area, make the contact more stable, and improve the overall service life.

[0020] The conductive rod directional block 11 is provided with a directional block limit opening 14 corresponding to the partition plate protrusion 51 on one side close to the conductive rod front guide portion 7. The directional block limit opening 14 has a depth of 0.2mm to 0.5mm, and the limit is reliable. This range will not cause over-tightening, and is convenient for subsequent maintenance and disassembly.

[0021] The conductive rod orientation blocks 11 are of square structure and are two in number, with accurate positioning and stable and reliable operation.

[0022] The conductive rod connecting portion 1 is provided with a conductive rod upper thread 4 near the conductive rod contact portion 2 to facilitate installation of components.

[0023] The rear end of the conductive rod front guide portion 7 is provided with a conductive rod rear inclined surface 15 for facilitating the removal of the static contact portion 45, so as to facilitate later maintenance.

[0024] The conductive rod connecting portion 1 and the conductive rod contact portion 2 are manufactured by integral extrusion, which has high safety and reliability, no risk of cold welding, high production efficiency and energy saving.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A contact conductive rod of a vacuum circuit breaker, comprising a conductive rod connecting portion (1) and a conductive rod contact portion (2), wherein the lower end of the conductive rod connecting portion (1) is provided with a conductive rod lower thread (3) connected to a base, characterized in that: The conductive rod contact portion (2) is provided with a conductive rod insertion portion (6) connected to the partition plate through hole (52), a conductive rod front guide portion (7), a conductive rod conductive portion (8) for contacting the static contact portion (45), and a conductive rod rear stop portion (9) in sequence from the outside to the inside, the conductive rod front guide portion (7) is provided with a conductive rod front cone surface (12) for facilitating the introduction of the static contact portion (45) at the front end, and conductive rod orientation blocks (11) corresponding to the partition plate orientation opening (48) are provided at intervals around a circular arc at the front end of the conductive rod insertion portion (6), and the thickness of the conductive rod orientation block (11) is less than the height of the partition plate positioning groove (50); A conductive rod conductive groove (13) for strengthening contact with the static contact contact portion (45) is provided inside the conductive rod conductive portion (8); the outer diameter of the conductive rod front guide portion (7) is the same as the outer diameter of the conductive rod rear stop portion (9); the outer diameter of the conductive rod front guide portion (7) is greater than the outer diameter of the conductive rod conductive portion (8); and the outer diameter of the conductive rod conductive portion (8) is greater than the outer diameter of the conductive rod penetration portion (6).

2. The contact conductive rod of the vacuum circuit breaker according to claim 1, characterized in that: The conductive rod orientation block (11) is provided with an orientation block limit opening (14) corresponding to the partition plate protrusion (51) on one side close to the conductive rod front guide portion (7), and the orientation block limit opening (14) has a depth of 0.2 mm to 0.5 mm.

3. The contact conductive rod of the vacuum circuit breaker according to claim 1, characterized in that: The conductive rod orientation blocks (11) are of a square structure and are two in number.

4. The contact conductive rod of the vacuum circuit breaker according to claim 1, characterized in that: The conductive rod connecting portion (1) is provided with a conductive rod upper thread (4) near the conductive rod contact portion (2).

5. The contact conductive rod of the vacuum circuit breaker according to claim 1, characterized in that: A conductive rod rear inclined surface (15) is provided at the rear end of the conductive rod front guide portion (7) for facilitating the movement of the static contact contact portion (45).

6. The contact conductive rod of the vacuum circuit breaker according to claim 1, characterized in that: The conductive rod connecting portion (1) and the conductive rod contact portion (2) are manufactured by integral extrusion.

Images