CN105590804B - The brake separating mechanism and its breaker of breaker - Google Patents

Abstract

The invention relates to an opening mechanism of a circuit breaker and a circuit breaker thereof. In the opening mechanism of the circuit breaker, a fixed contact piece (10) is arranged on the circuit breaker. The moving contact piece (20) is rotatably arranged on the circuit breaker and has a contact end (22) and a stop end (24). The rotation of the moving contact piece can make the contact end contact or separate from the fixed contact piece. The stopper (30) has a stopper end (32), and if the stopper end abuts against the stopper end, the contact end is separated from the fixed contact piece. The handle (40) is rotatably arranged on the circuit breaker, and it can drive the stopper to move along a release direction for disengaging the stop end from the stop end. If the stop end is separated from the stop end, the driving part (50) can drive the moving contact part to rotate so that the contact end contacts the fixed contact part. The movement of the stopper along the release direction can reduce the redundant stroke of the stopper, increase the action speed of the opening mechanism, and improve the reliability of the transmission from the handle to the stopper.

Description

Opening mechanism of circuit breaker and its circuit breaker

technical field

The invention relates to an opening mechanism for driving a movable contact to contact a fixed contact, in particular to an opening mechanism for a circuit breaker. The invention also relates to a circuit breaker using the opening mechanism.

Background technique

During the closing process of the opening mechanism of the miniature circuit breaker or residual current operated circuit breaker, when the moving contact and the fixed contact contact, the air will be ionized, and even sparks will be generated to burn the contacts, which is not good for product function and life. The opening mechanism requires quick contact between the moving contact and the fixed contact so that the contacts can be protected.

Contents of the invention

One of the objectives of the present invention is to provide an opening mechanism of a circuit breaker to realize rapid contact between the fixed contact and the moving contact.

Another object of the present invention is to provide a circuit breaker using the opening mechanism.

The invention provides an opening mechanism of a circuit breaker, which includes a fixed contact piece, a moving contact piece, a stopper piece, a handle, and a driving piece. The fixed contact is provided on the circuit breaker. The moving contact is rotatably arranged on the circuit breaker, and has a contact end and a stop end. The rotation of the moving contact can make the contact end contact or separate from the fixed contact. The stopper has a stopper end, and if the stopper end abuts against the stopper end, the contact end is separated from the fixed contact piece. The handle is rotatably arranged on the circuit breaker, and it can drive the stopper to move along a release direction for disengaging the stop end and the stop end from contacting each other. If the stopping end and the limiting end disengage, the driving part can drive the moving contact part to rotate so that the contact end contacts the fixed contact part. The movement of the stopper along the release direction can effectively reduce the redundant stroke of the stopper, thereby increasing the action speed of the entire opening mechanism and improving the reliability of the transmission from the handle to the stopper.

In yet another exemplary embodiment of the opening mechanism of the circuit breaker, the handle has a driving rib. The opening mechanism includes a plug and a connecting rod. The insert block has a first transmission end, a second transmission end, and a connecting portion arranged between the first transmission end and the second transmission end. When the handle is turned, the transmission rib can abut against the first transmission end or The second transmission end drives the plug to move. The connecting rod has a first connecting end which can be pivotally connected to the connecting part, and a second connecting end which can be pivotally connected to the limiting end.

In another exemplary embodiment of the opening mechanism of the circuit breaker, the stopper has a rail end connected to the stopper end, which extends in the release direction.

In another exemplary embodiment of the opening mechanism of the circuit breaker, the driving member is a compression spring.

In a further exemplary embodiment of the opening mechanism of the circuit breaker, the moving contact has a transition which is arranged between the contact end and the stop end. One end of the driver abuts against the transition portion, and the other end abuts against the circuit breaker.

The present invention provides a circuit breaker, which comprises a casing and the above-mentioned opening mechanism.

In yet another exemplary embodiment of the circuit breaker, the stopper has a rail end connected to the stopper end, which extends in the release direction. The casing is provided with a track groove, and the track end can be passed through the track groove.

The present invention provides a circuit breaker, which comprises a casing and the above-mentioned opening mechanism.

In yet another exemplary embodiment of the circuit breaker, the casing is provided with a track groove, and the track end can pass through the track groove.

Description of drawings

The following drawings only illustrate and explain the present invention schematically, and do not limit the scope of the present invention.

FIG. 1 is an exploded perspective view illustrating an exemplary embodiment of an opening mechanism of a circuit breaker.

Fig. 2 shows the combined structure of the opening mechanism of the circuit breaker in Fig. 1 .

Figures 3 to 5 are used to illustrate the closing process of the circuit breaker.

Label description

10 Fixed contacts

20 moving contacts

22 contact end

24 stop end

26 Transition

30 stop

32 stop end

34 track end

40 handle

42 Drive Rib

50 drives

60 plugs

62 First drive end

64 Second drive end

66 connection part

70 connecting rod

72 First connection end

74 Second connection terminal

80 shell

82 track slots.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions.

In order to make the drawing concise, the parts related to the present invention are only schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked.

Herein, "a" not only means "only one", but also means "more than one".

In this article, "first", "second" and so on are only used to distinguish each other, not to indicate their importance and order, and the premise of mutual existence.

FIG. 1 is an exploded perspective view illustrating an exemplary embodiment of an opening mechanism of a circuit breaker. Fig. 2 shows the combined structure of the opening mechanism of the circuit breaker in Fig. 1 . Referring to FIG. 1 and FIG. 2 , the opening mechanism of the circuit breaker includes a fixed contact 10 , a moving contact 20 , a stopper 30 , a handle 40 , and a drive 50 . The fixed contact 10 , the moving contact 20 , the stopper 30 , the handle 40 , and the driving member 50 are all disposed on a housing 80 of the circuit breaker, and the handle 40 and the moving contact 20 can rotate relative to the housing 80 .

The moving contact 20 has a contact end 22 and a stop end 24 . The contact end 22 can be in contact with the fixed contact piece 10. When the contact end 22 is in contact with the fixed contact piece 10, the circuit breaker is in a closed state, and the current can pass through the circuit breaker; when the contact end 22 is separated from the fixed contact piece 10, the circuit breaker is in a closed state. In the disconnected state, current cannot pass through the circuit breaker. In the exemplary embodiment shown in FIGS. 1 and 2 , a transition 26 is provided between the contact end 22 and the stop end 24 .

The stopper 30 has a stop end 32 . When the moving contact 20 rotates in the housing 80, the stop end 24 of the moving contact 20 can touch and abut against the stop end 32, and when the stop end 24 abuts against the stop end 32, the moving contact The member 20 cannot rotate, thereby preventing the contact end 22 from contacting the fixed contact member 10 .

The handle 40 is used to reset the circuit breaker, that is to make the contact end 22 and the fixed contact 10 contact again. The handle 10 is rotatable in the housing 80 . When the handle 40 is rotated to reset the circuit breaker, the rotation of the handle 40 can be transmitted to the stopper 30 , thereby driving the stopper 30 to move along the release direction shown by the arrow in FIG. 1 and FIG. 2 . When the stopper 30 moves along the release direction indicated by the arrow in FIGS. 1 and 2 , the stop end 24 disengages from the stop end 32 .

As shown in FIG. 1 and FIG. 2 , in an exemplary embodiment of the opening mechanism of a circuit breaker, the handle 40 has a driving rib 42 . The opening mechanism also includes an insert block 60 and a connecting rod 70 . The insert block 60 has a first transmission end 62 , a second transmission end 64 , and a connecting portion 66 between the first transmission end 62 and the second transmission end 64 . The first transmission end 62 and the second transmission end 64 can contact the transmission rib 42 respectively, so as to transmit the rotation of the handle 40 to the inserting block 60 . The connecting rod 70 has a first connecting end 72 and a second connecting end 74 . The first connecting end 72 is pivotally connected to the connecting portion 66 , and the second connecting end 74 is pivotally connected to the limiting end 32 . When the inserting block 60 moves, it can be transmitted to the stopper 30 through the connecting rod 70 . The transmission rib 42 can move between the first transmission end and the second transmission end, so that the handle needs to be rotated at a certain angle to drive the plug to move, and the transmission rib 42 cannot rotate the handle until it contacts the first transmission end 62. Contact of the contact end with the fixed contact is triggered.

When the stop end 24 disengages from the stop end 32, that is, the stop end 32 no longer prevents the movable contact piece 20 from rotating, the driving member 50 applies a force to the movable contact piece 20, so that the movable contact piece 20 rotates rapidly. And the contact end 22 contacts the fixed contact piece 10 quickly. In an exemplary embodiment of the opening mechanism of the circuit breaker, the driving member 50 is a spring, one end of which abuts against the housing 80 , and the other end abuts against the transition portion 26 .

Figures 3 to 5 are used to illustrate the closing process of the circuit breaker. As shown in FIG. 3 , the circuit breaker is in an off state at this time, and the contact end 22 of the moving contact 20 is away from the fixed contact 10 . The position of the handle 40 is such that the stop end 32 abuts against the stop end 24 and the moving contact member 20 cannot rotate.

When the handle 40 starts to rotate counterclockwise, the rotation of the handle 40 is transmitted to the stopper 30 through the plug 60 and the connecting rod 70 . The stopper 30 moves along the release direction indicated by the arrow in FIG. 4 , so that the stop end 32 moves relative to the stop end 24 , but the stop end 32 is still in contact with the stop end 24 . The contact end 22 of the moving contact 20 is still away from the stationary contact 10 .

When the handle 40 continues to rotate counterclockwise, the rotation of the handle 40 drives the stopper 30 to continue moving along the release direction shown by the arrow in FIG. 4 , and the stopper end 32 is separated from the stopper end 24 . Under the push of the driving member 50, the moving contact member 20 rotates rapidly clockwise, so that the contact end 22 contacts the fixed contact member 10, and the closing process ends.

The translational movement of the stopper along the release direction can effectively reduce the redundant travel of the stopper, thereby increasing the action speed of the entire opening mechanism and improving the reliability of the transmission from the handle to the stopper.

Referring to FIGS. 1 and 2 , the stop 30 has a track end 34 . The track end 34 is connected to the limiting end 32 , and the track end 34 extends along the release direction in FIG. 1 . A track groove 82 is provided in the housing 80 , and the track end 34 can be inserted into the track groove 82 and move along the track groove 82 , thereby improving the stability of the movement of the stopper.

It should be understood that although this specification is described according to various implementations, not each implementation only includes an independent technical solution, and this description of the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present invention, and they are not intended to limit the protection scope of the present invention. Changes, such as combination, division or repetition of features, should be included in the protection scope of the present invention.

Claims (7)

1. The opening mechanism of the circuit breaker is characterized in that it includes: A fixed contact piece (10) arranged on the circuit breaker; A moving contact (20) rotatably arranged on the circuit breaker has a contact end (22) and a stop end (24), the rotation of the moving contact (20) causes the contact end ( 22) Contacting or separating from the fixed contact (10); a stopper (30), which has a stop end (32), if said stop end (24) abuts against said stop end (32), said contact end (22) and said fixed end The contacts (10) are separated; A handle (40) rotatably arranged on the circuit breaker, which can drive the stopper (30) along a release that disengages the stopper end (24) from the stopper end (32) direction movement, the handle (40) has a transmission rib (42); A driving part (50), if the stop end (24) is out of contact with the stop end (32), the driving part (50) can drive the moving contact part (20) to rotate so that all The contact end (22) is in contact with the fixed contact piece (10); a plug (60), which has a first drive end (62), a second drive end (64), and a set on the The connecting portion (66) between the first transmission end (62) and the second transmission end (64), when the handle (40) is rotated, the transmission rib (42) can abut against the first transmission end (64). the transmission end (62) or the second transmission end (64) to drive the movement of the insert block (60); and A connecting rod (70), which has a first connection end (72) pivotally connected to the connecting portion (66), and a second connection end (72) pivotally connected to the limiting end (32) 74). 2. The opening mechanism of a circuit breaker as claimed in claim 1, wherein said stopper (30) has a track end (34) connected to said stopper end (32), and it extends along said release direction. extend. 3. The opening mechanism of a circuit breaker according to claim 1, wherein the driving member (50) is a compression spring. 4. The opening mechanism of a circuit breaker according to claim 3, wherein said moving contact (20) has a transition portion arranged between said contact end (22) and said stop end (24) (26), One end of the driving member (50) abuts against the transition portion (26), and the other end abuts against the circuit breaker. 5. A circuit breaker, characterized in that it comprises: a casing (80); and The opening mechanism according to any one of claims 1, 3, and 4, which is arranged on the housing (80). 6. The circuit breaker as claimed in claim 5, wherein said stopper (30) has a track end (34) connected to said stopper end (32), which extends along said release direction, The casing (80) is provided with a track groove (82), and the track end (34) can pass through the track groove (82). 7. A circuit breaker, characterized in that it comprises: a casing (80); and The opening mechanism according to claim 2, which is arranged on the casing (80).