CN210040100U

CN210040100U - Miniature circuit breaker operating device and miniature circuit breaker

Info

Publication number: CN210040100U
Application number: CN201921166307.3U
Authority: CN
Inventors: 周红兵; 倪育强
Original assignee: Yueqing Sixiang Electric Co Ltd
Current assignee: Yueqing Sixiang Electric Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-02-07
Anticipated expiration: 2029-07-23

Abstract

The utility model provides a miniature circuit breaker operating device and miniature circuit breaker, wherein, miniature circuit breaker operating device includes: the moving contact is rotatably arranged on the shell and is provided with a brake opening position separated from the static contact and a brake closing position in contact communication with the static contact; the push button is arranged on the shell in a translation mode and is connected with the moving contact in a rotating mode, and the push button drives the moving contact to rotate towards a switching-off position or a switching-on position so as to realize switching-on and switching-off actions; and the locking structure is used for locking the push button in a closing state. Compared with the handle of prior art can drive moving contact pivoted scheme through U-shaped push rod, jump and detain, the utility model discloses in under the cooperation of locking structure, the button that pushes away of translation can the direct drive above-mentioned moving contact realize the divide-shut brake action, push away the button and need not to drive above-mentioned moving contact rotation through contact carrier, jump the bracket component that detain, hasp are constituteed, have transmission simple structure, divide-shut brake is fast, advantage that the production and maintenance cost is low.

Description

Miniature circuit breaker operating device and miniature circuit breaker

Technical Field

The utility model relates to a miniature circuit breaker technical field, concretely relates to miniature circuit breaker operating device and miniature circuit breaker.

Background

The miniature circuit breaker is a protective electric appliance installed on a terminal distribution line and is mainly used for overload and short-circuit protection of lines and electric equipment, generally comprises an operating mechanism, an electromagnetic tripping mechanism, a thermal tripping mechanism, an arc extinguishing mechanism and the like, the operating mechanism is a component for opening and closing the circuit breaker, the operating mechanism ensures that the circuit breaker is reliably closed and also ensures that the circuit breaker is quickly opened in a fault state, and the performance of the operating mechanism directly influences the function of the miniature circuit breaker.

As shown in fig. 8, the conventional miniature circuit breaker operating mechanism drives a bracket assembly consisting of a contact bracket 03, a trip button 04, a latch 05 and a moving contact 06 to move by rotating a U-shaped push rod 02 on a handle 01, so as to drive the moving contact 06 to be in contact with or disconnected from a fixed contact, thereby realizing opening and closing operations. Through the linkage of the rotating handle and the moving contact 06, the switching-on and switching-off speed of the circuit breaker can be influenced, and the problems of complex transmission structure and high production and maintenance cost are solved.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming operating device's among the prior art handle need can drive the moving contact action through driving medium such as bracket component, and the divide-shut brake speed that leads to the circuit breaker is slow, and transmission structure is complicated, the problem that the production maintenance cost is high to a miniature circuit breaker operating device is provided, and the miniature circuit breaker who has this miniature circuit breaker operating device.

Therefore, the utility model provides a miniature circuit breaker operating device, include:

the moving contact is rotatably arranged on the shell and is provided with a switching-off position separated from the static contact and a switching-on position in contact communication with the static contact;

the push button is arranged on the shell in a translation mode and is connected with the moving contact in a rotating mode, and the push button drives the moving contact to rotate towards the direction of the opening position or the closing position so as to realize opening and closing actions;

and the locking structure is used for locking the push button in a closing state.

As a preferred scheme, the top of the moving contact is pivoted with the push button, a strip-shaped hole is formed in the middle of the moving contact, the bottom of the moving contact is opposite to the static contact, a first mounting column extending into the strip-shaped hole is arranged on the shell, and the first mounting column is arranged in the strip-shaped hole in a sliding mode.

Preferably, the push button further comprises a first biasing member adapted to drive the push button to return, one end of the first biasing member abuts against the housing, and the other end of the first biasing member abuts against the push button.

As a preferable aspect, the locking structure includes:

the lock catch piece is rotatably arranged on the shell, a first rotating arm of the lock catch piece is provided with a lock tooth matched and locked with the clamping groove of the push button, and the lock catch piece is provided with a locking position matched with the push button to lock the push button and an unlocking position separated from the push button;

and a second biasing member having one end connected to the housing and the other end connected to the latch member, for applying a biasing force to the latch member to rotate in the direction of the locking position.

As a preferred scheme, the contact surface of the lock tooth and the clamping groove which are matched with each other is an inclined surface, so that the push button is driven by external force to drive the clamping groove to be separated from the lock tooth.

Preferably, the housing is provided with a button which is arranged opposite to the first rotating arm and is suitable for driving the locking fastener to rotate from the locking position to the unlocking position.

Preferably, the switch further comprises a third biasing member, one end of the third biasing member is connected to the housing, and the other end of the third biasing member is connected to the movable contact to apply a biasing force to the movable contact to move toward the switching-on position.

As a preferable scheme, one side of the shell, which is close to the inner wall of the shell, is provided with a second mounting column which is in blocking fit with the movable contact so as to limit the opening position of the movable contact.

Preferably, the housing is formed with a slide groove for reciprocating the slider of the push button, and the first biasing member is disposed in the slide groove.

The utility model provides a miniature circuit breaker, include as above miniature circuit breaker operating device. The utility model discloses technical scheme has following advantage:

1. the utility model provides a miniature circuit breaker operating mechanism, which comprises a moving contact, a push button and a locking structure, wherein the push button is arranged on a shell in a translation way, and is connected with the moving contact in a rotating way, the push button drives the moving contact to rotate towards the direction of the opening position or the closing position so as to realize the opening and closing action, because the push button is directly connected with the moving contact in a rotating way, the push button moves in a reciprocating way to drive the moving contact and the static contact to be switched on and off, compared with the handle of prior art can drive moving contact pivoted scheme through U-shaped push rod, jump and detain, the utility model discloses but in the cooperation of locking structure translation push away the button can the direct drive above-mentioned moving contact realize the divide-shut brake action, push away the button and need not to drive above-mentioned moving contact rotation through contact carrier, jump the bracket component that detain, hasp are constituteed, have transmission simple structure, divide-shut brake is fast, advantage that the production and maintenance cost is low.

2. The utility model provides a miniature circuit breaker operating device, the top of moving contact with push away the pin joint of button, the middle part shaping has the bar hole, the bottom sets up with the static contact relatively, is provided with on the casing and stretches into the downthehole first erection column of bar, first erection column slides and sets up downthehole at the bar, pushes away the button when reciprocal translation, when driving the relative first erection column of moving contact and reciprocate, rotates around first erection column, the moving contact has simple structure's advantage.

3. The utility model provides a miniature circuit breaker operating device, the locking structure includes: the lock catch piece is rotatably arranged on the shell, a first rotating arm of the lock catch piece is provided with a lock tooth matched and locked with the clamping groove of the push button, and the lock catch piece is provided with a locking position matched with the push button so as to lock the push button and an unlocking position separated from the push button; and a second biasing member having one end connected to the housing and the other end connected to the latch member for applying a biasing force to the latch member to rotate in a direction toward the locking position. Utility model people creatively sets the hasp piece to and pushes away button locking cooperation, compares with prior art's hasp and jump knot locking complex mode, has saved and has jumped the knot, and the structure is simpler, and the production maintenance cost is low.

4. The utility model provides a miniature circuit breaker operating device, lock tooth and draw-in groove mutually supported contact surface are the inclined plane to the messenger pushes away the button and receives external drive, drives draw-in groove and lock tooth separation, also can manual drive push away the button and realize the separating brake, and the setting on inclined plane has simple structure's advantage.

5. The utility model provides a miniature circuit breaker operating device, be equipped with on the casing and set up with first pivot arm relatively, be suitable for to drive the locking part and rotate the button to the unblock position from the locking position, when button drive snap close piece rotates to the unblock position, push away the button and drive the moving contact under the effect of first biasing part and move to the separating brake position to realize the separating brake, the utility model discloses the people pushes away the button in manual drive and realizes on the basis of separating brake, has increased the mode that button drive pushed away the button and realizes the separating brake, and the separating brake operation is simpler like this.

6. The utility model provides a miniature circuit breaker operating device still includes the third biasing member, and third biasing member one end is connected with the casing, and the other end is connected with the moving contact, applys the biasing force towards the movement of closing the floodgate position for the moving contact, and when closing the floodgate position, the third biasing member makes movable contact and static contact keep the pressfitting butt to can not make movable contact and static contact separate because of vibrations, and then produce electric arc, prolonged the life of moving contact and static contact.

7. The utility model provides a miniature circuit breaker operating device, casing are close to its inner wall one side and are provided with and block the cooperation with the moving contact, with the second erection column of restriction moving contact separating brake position to make the moving contact can keep certain clearance with shells inner wall, prevent that the moving contact of higher temperature from making plastic housing melt.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a miniature circuit breaker of the present invention;

fig. 2 is a schematic structural view of the operating mechanism of the miniature circuit breaker in a closing state;

fig. 3 is a schematic structural view of the operating mechanism of the miniature circuit breaker in the opening state;

FIG. 4 is a perspective view of FIG. 2 with the housing removed;

fig. 5 is an exploded view of the push button and the movable contact;

fig. 6 is a schematic structural view of the fastener;

FIG. 7 is an exploded view of the push button and the housing;

fig. 8 is a schematic structural diagram of an operating mechanism of a small and medium sized circuit breaker in the prior art.

Description of reference numerals: 01. a handle; 02. a U-shaped push rod; 03. a contact holder; 04. jumping and buckling; 05. locking; 06. a moving contact;

1. a housing; 11. a first mounting post; 12. a second mounting post; 13. a chute; 2. a moving contact; 21. a strip-shaped hole; 22. a third biasing member; 3. static contact; 4. a push button; 41. a first biasing member; 42. a card slot; 43. a slider; 5. a fastener; 51. a first rotation arm; 52. locking teeth; 53. a second biasing member; 54. a contact surface; 55. a second rotating arm; 6. a button; 61. and a stop block.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

The present embodiment provides a miniature circuit breaker, as shown in fig. 1, 5 and 7, which is provided with an operating mechanism including a movable contact 2, a push button 4, a push button 6 and a locking structure.

A moving contact 2 which is rotatably arranged on the shell 1 and has a brake separating position separated from the static contact 3, and a switch-on position in contact communication with the static contact 3, the top of the moving contact 2 is pivoted with the push button 4, a strip-shaped hole 21 is formed in the middle, the bottom is arranged opposite to the static contact 3, the shell 1 is provided with a first mounting column 11 extending into the strip-shaped hole 21, the first mounting column 11 is slidably arranged in the strip-shaped hole 21, the shell 1 is provided with a third biasing member 22 and a second mounting column 12, one end of the third biasing member 22 is connected with the shell 1, the other end of the third biasing member 22 is connected with the movable contact 2, and a biasing force moving towards the switching-on position is applied to the movable contact 2, a second mounting column 12 which is in blocking fit with the movable contact 2 to limit the opening position of the movable contact 2 is arranged on one side of the shell 1 close to the inner wall of the shell.

The push button 4 is installed on the shell 1 in a translation mode, the top of the push button 4 protrudes out of the shell 1, a bottom sliding block 43 is connected with the movable contact 2 in a rotating mode, a sliding groove 13 for enabling the sliding block 43 of the push button 4 to move in a reciprocating mode is formed in the shell, the first biasing part 41 is arranged in the sliding groove 13, one end of the first biasing part 41 abuts against the shell 1, and the other end of the first biasing part abuts against the push button 4 and is used for driving the push button 4 to reset.

The locking structure includes: a catch member 5 and a second biasing member 53.

As shown in fig. 6, the locking member 5 is rotatably mounted on the housing 1, and has a first rotating arm 51 and a second rotating arm 55, wherein the first rotating arm 51 is provided with a locking tooth 52 that is matched and locked with the locking slot 42 of the push button 4, a contact surface 54 where the locking tooth 52 is matched with the locking slot 42 is an inclined surface, so that the push button 4 is driven by an external force to drive the locking slot 42 to be separated from the locking tooth 52, and the locking member 5 has a locking position that is matched with the push button 4 to lock the push button 4, and an unlocking position that is separated from the push button 4. The second rotating arm 55 of the locking element 5 is arranged opposite to a push rod of an electromagnetic trip mechanism (it should be noted that the electromagnetic trip mechanism is a mature technology, and therefore, the internal structure and the working principle thereof are not described in detail), when a short circuit occurs, the push rod of the electromagnetic trip mechanism drives the second rotating arm 55 to rotate, so that the locking element 5 rotates from a locking position to an unlocking position, and the push button 4 resets under the action of the first biasing element 41 to drive the moving contact 2 to be separated from the static contact 3, thereby realizing the opening of the brake.

A second biasing member 53, having one end connected to the housing 1 and the other end connected to the locking member 5, applies a biasing force to the locking member 5 to rotate in the direction of the locking position.

The button 6, the top is set to protrude out of the housing 1, the bottom is opposite to the first rotating arm 51, the side wall of the button 6 is formed with an installation groove inserted into the housing 1 and a stop block 61 blocking the top wall and the bottom wall of the installation groove, the button 6 is driven by external force to drive the first rotating arm 51 to rotate, further, the locking member 5 is driven to rotate from the locking position to the unlocking position, the push button 4 resets under the action of the first biasing member 41, and the moving contact 2 is driven to be separated from the static contact 3, so that the brake separating is realized.

The utility model discloses a miniature circuit breaker operating device, but the cooperation of locking structure down the translation push away button 4 can the above-mentioned moving contact of direct drive 2 realize the divide-shut brake action, push away button 4 need not to drive above-mentioned moving contact 2 through contact carrier, jump the bracket component that detain, hasp are constituteed and rotate, have transmission simple structure, divide-shut brake is fast, advantage that the production and maintenance cost is low.

In the present embodiment, the first biasing member 41, the second biasing member 53, and the third biasing member 22 are springs.

As an alternative embodiment, the first mounting post 11 and the second mounting post 12 are two parallel arranged mounting posts of a U-shaped bar inserted into the housing mounting slot.

As shown in fig. 2 to 4, the operating mechanism of the miniature circuit breaker of the present invention has the following working principle:

closing:

in an initial state, the operating mechanism is in a brake opening position shown in fig. 3, the push button 4 is manually pushed to move rightward against the acting force of the first biasing member 41, the push button 4 drives the movable contact 2 to rotate clockwise around the first mounting post 11, when the push button 4 moves to a brake closing position shown in fig. 2, the movable contact 2 is in contact communication with the fixed contact 3 to achieve brake closing, and at this time, the locking tooth 52 of the locking member 5 is matched with the clamping groove 42 of the push button 4 to be locked.

Opening a brake:

1) realize the separating brake through pushing away the button:

the push button 4 is manually pushed to move leftwards, and because the contact surface 54 of the lock tooth 52 and the clamping groove 42 which are matched with each other is an inclined surface, when the push button 4 moves leftwards, the lock fastener 5 is driven to rotate anticlockwise, the moving contact 2 is driven to rotate anticlockwise around the first mounting column 11, the moving contact 2 is separated from the static contact 3, and therefore opening is achieved.

2) Realize the separating brake through the button:

the manual driving button 6 moves downwards, the button 6 abuts against the first rotating arm 51, the locking piece 5 is driven to rotate anticlockwise, the locking tooth 52 of the locking piece 5 is unlocked with the clamping groove 42 of the push button 4, the push button 4 moves leftwards under the action of the first biasing piece 41, the movable contact 2 is driven to rotate anticlockwise around the first mounting column 11, the movable contact 2 is separated from the static contact 3, and therefore opening is achieved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A miniature circuit breaker operating mechanism characterized in that: the method comprises the following steps:

the moving contact (2) is rotatably arranged on the shell (1) and is provided with a brake separating position separated from the static contact (3) and a brake closing position contacted and communicated with the static contact (3);

the push button (4) is translatably arranged on the shell (1) and is rotationally connected with the moving contact (2), and the push button (4) drives the moving contact (2) to rotate towards the direction of the opening position or the closing position so as to realize opening and closing actions;

and the locking structure is used for locking the push button (4) in a closing state.

2. A miniature circuit breaker operating mechanism as set forth in claim 1, wherein: the top of moving contact (2) with push button (4) pin joint, the middle part shaping has bar hole (21), the bottom with static contact (3) set up relatively, be provided with on casing (1) and stretch into first erection column (11) in bar hole (21), first erection column (11) slide and set up in bar hole (21).

3. A miniature circuit breaker operating mechanism as set forth in claim 2, wherein: the push button is characterized by further comprising a first biasing member (41) suitable for driving the push button (4) to reset, wherein one end of the first biasing member (41) is abutted against the shell (1), and the other end of the first biasing member (41) is abutted against the push button (4).

4. A miniature circuit breaker operating mechanism as set forth in claim 3, wherein: the locking structure includes:

the lock catch piece (5) is rotatably arranged on the shell (1), a first rotating arm (51) of the lock catch piece is provided with a locking tooth (52) which is matched and locked with a clamping groove (42) of the push button (4), and the lock catch piece (5) is provided with a locking position which is matched with the push button (4) to lock the push button (4) and an unlocking position which is separated from the push button (4);

and a second biasing member (53) having one end connected to the housing (1) and the other end connected to the locking member (5) and applying a biasing force to the locking member (5) to rotate in the direction of the locking position.

5. A miniature circuit breaker operating mechanism as set forth in claim 4, wherein: the contact surface (54) of the lock tooth (52) and the clamping groove (42) which are matched with each other is an inclined surface, so that the push button (4) is driven by external force to drive the clamping groove (42) to be separated from the lock tooth (52).

6. A miniature circuit breaker operating mechanism according to claim 4 or 5, wherein: the shell (1) is provided with a button (6) which is opposite to the first rotating arm (51) and is suitable for driving the locking fastener (5) to rotate from the locking position to the unlocking position.

7. A miniature circuit breaker operating mechanism as set forth in claim 6, wherein: the switch also comprises a third biasing member (22), one end of the third biasing member (22) is connected with the shell (1), the other end of the third biasing member is connected with the movable contact (2), and a biasing force for moving the movable contact (2) towards the switching-on position is applied to the movable contact.

8. A miniature circuit breaker operating mechanism as set forth in claim 1, wherein: and a second mounting column (12) which is in blocking fit with the moving contact (2) to limit the opening position of the moving contact (2) is arranged on one side of the shell (1) close to the inner wall of the shell.

9. A miniature circuit breaker operating mechanism as set forth in claim 3, wherein: a sliding groove (13) for the sliding block (43) of the push button (4) to move in a reciprocating mode is formed in the shell (1), and the first biasing member (41) is arranged in the sliding groove (13).

10. A miniature circuit breaker, characterized by: comprising a miniature circuit breaker operating mechanism according to any of claims 1-9.