CN201417728Y - Contact device of circuit breaker - Google Patents

Abstract

The utility model discloses a contact device of a circuit breaker. The contact device comprises a conductive part, a transmission rotating shaft, a spring arranged in the transmission rotating shaft and an installing shaft, wherein the conductive part comprises a U-shaped contact, a contact support and a pair of conductive contacts; the U-shaped contact consists of two parallel arranged contact arms and a connection plate which is arranged at the bottom of the contact arms and used for connecting the two contact arms; the contact support is arranged on the connection plate; and the conductivecontacts are arranged on the two contact arms. The contact device of the circuit breaker is characterized in that the end of the contact support forms a nonclosed hook-type bending which is used for installing the conductive part on the transmission rotating shaft and for the insertion of the installing shaft. The contact device has the advantages that the whole assembling process is simpler and more convenient, the time and labor are saved, the one-man operation can be easily carried out, and the contact device can be ensured to have good contact performance.

Description

The contact apparatus of circuit breaker

Technical field

The utility model relates to a kind of contact apparatus of circuit breaker, is the improvement to existing contact of breaker device mounting structure.

Background technology

The contact apparatus of circuit breaker in the prior art, its structure mainly comprises conductive component, drive shaft, spring and pivot pin, described conductive component comprises U-shaped contact and the connecting rod that is arranged on the U-shaped contact, offer in an end end of connecting rod and to be used for conductive component is installed on the drive shaft and for the circular hole of described pivot pin inserting, described spring is arranged in the rotating shaft cavity of drive shaft.When assembling, at first spring is put into the rotating shaft cavity of drive shaft, again conductive component is put into the rotating shaft cavity, pivot pin is installed then, because the connecting rod end of conductive component is a circular hole,, make spring produce certain deflection so when pivot pin is installed, must firmly push conductive component, after the circular hole of bar to be connected one end end exposes rotating shaft, pivot pin could laterally penetrate connecting rod, finishes whole assembling, and such fit is time-consuming, effort, and very inconvenience of one man operation.

Summary of the invention

The purpose of this utility model be to provide a kind of simple in structure, be convenient to assemble and can guarantee that contact has the contact apparatus of the circuit breaker of good contact performance.

The purpose of this utility model reaches like this, a kind of contact apparatus of circuit breaker, comprise conductive component 1, drive shaft 2, place spring 3 and installation shaft 4 in the drive shaft 2, described conductive component 1 comprise by two contact arms that are set in parallel 111 and be positioned at contact arm 111 bottoms be used to connect the U-shaped contact 11 that the connecting plate 112 of two contact arms constitutes, the contact that is located on the connecting plate 112 supports 12, and be located at pair of conductive contact 13 on two contact arms 111, be characterized in: be formed with in the end of described contact support 12 one do not seal be used for conductive component 1 is installed on the drive shaft 2 and for the hook-type bending 121 of described installation shaft 4 insertings.

In a specific embodiment of the present utility model, described contact support 12 is supported the thickness of 12 bodies in other position at the thickness at hook-type bending 121 places less than contact.

In another specific embodiment of the present utility model, the centre of described hook-type bending 121 is formed with and is used for the arcuate socket 1211 that an and end that cooperate with installation shaft 4 has gap, and the aperture of this arcuate socket 1211 is greater than the diameter of described installation shaft 4.

In another specific embodiment of the present utility model, the below of described connecting plate 112 and be positioned at the medium position place and be formed with a flange 1121.

In another specific embodiment of the present utility model, described pair of conductive contact 13 is located at the below of two contact arms 111, with flange 1121 in the same way.

In of the present utility model and then specific embodiment, described spring 3 is a coil spring, and an end of this spring 3 has free bending 31, the other end has U-shaped bending 32.

More of the present utility model and in specific embodiment, be formed with the open ports 25 of two contact arms 111 that are used to hold described U-shaped contact 11 on the described power transmission shaft 2 and be used to hold the bending storage tank 26 that described contact is supported 12 hook-type bending 121.

In again of the present utility model and then specific embodiment, be formed with the installation shaft groove 21 that is used to hold described installation shaft 4 on the described power transmission shaft 2.

Of the present utility model again more and in specific embodiment, be formed with on the described power transmission shaft 2 and be used for for the caulking groove 22 of free bending 31 scarves of described spring 3 one ends and the spring stopper slot 23 that is used for the external diameter of spring 3 is risen position-limiting action.

Of the present utility model again more and then in specific embodiment, be formed with on the described power transmission shaft 2 and be used for the depressed part 24 that cooperates with flange 1121.

The utility model is because after adopting said structure, the beneficial effect that has: make whole assembling process more easy, time saving and energy saving, even the one man operation also can easily finish; In addition, can guarantee that contact apparatus has the excellent contact performance.

Description of drawings

Fig. 1 is an example structure explosive view of the present utility model.

Fig. 2 is the perspective view of the another side of drive shaft 2 among Fig. 1.

Among the figure: 1. conductive component, 11.U shape contact, 111. contact arms, 112. connecting plates, 1121. flanges, 12. contact supports, 121. hook-type bendings, 1211. arcuate sockets, 13. conductive contacts; 2. drive shaft, 21. installation shaft grooves, 22. caulking grooves, 23. spring stopper slots, 24. depressed parts, 25. open ports, 26. bending storage tanks; 3. spring, 31. free bendings, the bending of 32.U shape; 4. installation shaft.

Embodiment

By the description of applicant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to technical solutions of the utility model embodiment.

See also Fig. 1, the contact apparatus of a kind of circuit breaker of the utility model comprises conductive component 1, drive shaft 2, places spring 3 and installation shaft 4 in the drive shaft 2.Described conductive component 1 comprises U-shaped contact 11, contact support 12 and conductive contact 13, U-shaped contact 11 is made of two contact arms that are set in parallel 111 and the connecting plate 112 that is used to connect two contact arms that is positioned at contact arm 111 bottoms, can become U-shaped by integral production between two contact arms 111 and the connecting plate 112, below connecting plate 112 and be positioned at the medium position place and also be formed with a flange 1121, this flange 1121 be welded on two contact arms 111 pair of conductive contact 13 in the same way, promptly pair of conductive contact 13 is located at the below of two contact arms 111.Described contact support 12 is connected on the connecting plate 112 of U-shaped contact 11 by modes such as riveted joint or welding, the end of contact support 12 be formed with one do not seal be used for conductive component 1 is installed to the hook-type bending 121 that drive shaft 2 gets on, and the thickness at hook-type bending 121 places is supported the thickness of 12 bodies in other position less than contact, be formed with the arcuate socket 1211 that an end has gap in the centre of hook-type bending 121, the aperture of this arcuate socket 1211 is greater than the diameter of described installation shaft 4, be convenient to conductive component 1 and on installation shaft 4, produce floating space, make contact support 12 can be when rotating about it along the stroke that axially has an angle of swing of contact support 12, this trip is enough to guarantee to compensate the imbalance between the dynamic/static contact.

Please continue to consult Fig. 1 and in conjunction with Fig. 2, be formed with installation shaft groove 21 respectively on the drive shaft 2 described in the utility model, caulking groove 22, spring stopper slot 23, depressed part 24, open ports 25 and bending storage tank 26, open ports 25 is used to hold two contact arms that are set in parallel 111 of described U-shaped contact 11, bending storage tank 26 is used to hold described contact and supports 12 hook-type bending 121, installation shaft groove 21 is used to hold described installation shaft 4, caulking groove 22 is used for free bending 31 scarves for described spring 3 one ends, spring stopper slot 23 is used for cooperating with the external diameter of spring 3, depressed part 24 is used for cooperating with flange 1121 on the connecting plate 112, be that flange 1121 on the connecting plate 112 contacts with the depressed part 24 of drive shaft 2, make flange 1121 axially rotating along U-shaped contact 11 in the concave surface of depressed part 24, contact between compensation moving conductive contact and the quiet conductive contact is so that it reaches balance, thereby can guarantee that contact apparatus has the excellent contact performance.

Please continue to consult Fig. 1, spring 3 described in the utility model is a spirality torsion spring structure, one end of spring 3 is a free bending 31, be contained in the caulking groove 22 of described drive shaft 2 correspondences, the other end of spring 3 is formed with U-shaped bending 32, be shelved on the connecting plate 112 of U-shaped contact 11 bottoms, and the flange on the connecting plate 112 1121 is positioned at the U-shaped bending 32 of spring 3, and make and remain with certain distance between the two, be convenient to have after contact is scolded out enough spatial accommodations to make contact support 12 around upwards rotation of installation shaft 4, the external diameter of spring 3 is spacing by the spring stopper slot 23 of drive shaft 2.

The utility model assembles like this: the cavity of at first spring 3 being put into drive shaft 2, and the free bending 31 of spring 3 one ends embeds in the caulking groove 22 of drive shaft 2, the external diameter of spring 3 cooperates with spring stopper slot 23, again installation shaft 4 is put into the installation shaft groove 21 of drive shaft 2, assemble conductive component 1 then, wherein: two contact arms that are set in parallel 111 of the U-shaped contact 11 on the conductive component 1 place in the open ports 25 of drive shaft 2, the flange 1121 of connecting plate 112 bottoms places in the U-shaped bending 32 of spring 3 and with depressed part 24 and cooperates, contact supports the hook-type bending 121 of 12 ends to place in the bending storage tank 26, only need push conductive component then with less relatively power, make spring 3 produce less relatively distortion and just can make hook-type bending 121 middle arcuate sockets 1211 hook described installation shaft 4, so assembling is very convenient.

Claims (10)

1, a kind of contact apparatus of circuit breaker, comprise conductive component (1), drive shaft (2), place spring (3) and installation shaft (4) in the drive shaft (2), described conductive component (1) comprises by two contact arms that are set in parallel (111) and is positioned at the U-shaped contact (11) that the connecting plate that is used to connect two contact arms (112) of contact arm (111) bottom constitutes, be located at the contact support (12) on the connecting plate (112), and be located at pair of conductive contact (13) on two contact arms (111), it is characterized in that being formed with in the end of described contact support (12) one do not seal be used for conductive component (1) is installed to that drive shaft (2) is gone up and for the hook-type bending (121) of described installation shaft (4) inserting.

2, the contact apparatus of circuit breaker according to claim 1 is characterized in that thickness that described contact support (12) locates in hook-type bending (121) is less than the thickness of contact support (12) body in other position.

3, the contact apparatus of circuit breaker according to claim 1, the centre that it is characterized in that described hook-type bending (121) be formed be used for cooperating with installation shaft (4) and an end have the arcuate socket (1211) of gap, the aperture of this arcuate socket (1211) is greater than the diameter of described installation shaft (4).

4, the contact apparatus of circuit breaker according to claim 1 is characterized in that the below of described connecting plate (112) and is positioned at the medium position place being formed with a flange (1121).

5, the contact apparatus of circuit breaker according to claim 1 is characterized in that described pair of conductive contact (13) is located at the below of two contact arms (111), with flange (1121) in the same way.

6, the contact apparatus of circuit breaker according to claim 1 is characterized in that described spring (3) is a coil spring, and an end of this spring (3) has free bending (31), the other end has U-shaped bending (32).

7, the contact apparatus of circuit breaker according to claim 1 is characterized in that being formed with on the described power transmission shaft (2) open ports (25) of two contact arms (111) that are used to hold described U-shaped contact (11) and is used to hold the bending storage tank (26) of the hook-type bending (121) of described contact support (12).

8, the contact apparatus of circuit breaker according to claim 1 is characterized in that being formed with on the described power transmission shaft (2) the installation shaft groove (21) that is used to hold described installation shaft (4).

9, the contact apparatus of circuit breaker according to claim 1 is characterized in that being formed with on the described power transmission shaft (2) caulking groove (22) of free bending (31) scarf that is used for described spring (3) one ends of confession and the spring stopper slot (23) that is used for the external diameter of spring (3) is risen position-limiting action.

10, the contact apparatus of circuit breaker according to claim 1 is characterized in that being formed with on the described power transmission shaft (2) and is used for the depressed part (24) that cooperates with flange (1121).

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