CN209747427U

CN209747427U - Miniature circuit breaker with switching and tripping display functions

Info

Publication number: CN209747427U
Application number: CN201920793978.6U
Authority: CN
Inventors: 黄文俊; 李�赫; 刘维壬
Original assignee: Xiamen Shihlin Electric & Engineering Co Ltd
Current assignee: Xiamen Shihlin Electric & Engineering Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2019-12-06
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a miniature circuit breaker with switching and jump and take off display function relates to the circuit breaker field, including a bottom plate and an upper cover, the upper cover combines on this bottom plate, and the bottom plate is equipped with a window and a display panel in the dress, and this window sets up in the bottom plate upper portion of this circuit breaker, and this display panel activity is installed in this bottom plate, and this window is located the slip route top of this display panel, and when the circuit breaker jumped off, the display panel was stirred to this window and corresponds the position. The utility model provides a miniature circuit breaker has set up a display panel, and this display panel can be stirred at the in-process that takes off in the jump to the circuit breaker, and the display panel removes to the window and corresponds the position, shows the state of taking off promptly, consequently can clearly and definitely show that the circuit breaker is the state of artificial disconnection or circuit fault to ensure personal safety.

Description

Miniature circuit breaker with switching and tripping display functions

Technical Field

The utility model relates to a circuit breaker field indicates a miniature circuit breaker with switching and jump and take off display function especially.

Background

A miniature circuit breaker can be applied to a main switch and a branch current control switch which are used in a distribution line, is an important element for protecting electric appliances, is mainly used for short-circuit protection and serious overload prevention, can also be used as one of protection devices for motor load line protection on industrial machines, and can be immediately tripped to protect the lines and the electric appliances when the circuit breaker detects the problems of short circuit, electric leakage or serious overload and the like.

As shown in fig. 1, the conventional miniature circuit breaker includes a base plate 80, a handle 81, a supporting base 82, a movable member 83, a main fulcrum 84, a return lever 85, a return torsion spring 86, a two-alloy plate 87, a contact member 88 and a contact 89, wherein the handle 81 is pivotally disposed on the base plate 80, and the supporting base 82 and the movable member 83 are combined with the base plate 80 and sleeved on the main fulcrum 84. The reset lever 85 and the reset torsion spring 86 are coupled and then sleeved on a supporting point (not shown) of the supporting base 82, the contact 88 is coupled to the bottom plate 80, and the contact 89 is disposed on the contact 88.

The existing miniature circuit breaker can not judge the state of artificial disconnection or circuit fault from the outside, if the circuit breaker can not automatically disconnect the circuit due to the distribution line accident, if the circuit breaker is powerfully powered off by an operating handle, the current sensing accident is easy to occur due to the judgment error.

In addition, the conventional small circuit breaker is unstable in mechanism operation, easily causes poor insulation withstand voltage during a short circuit test, is poor in reproducibility during a trip test, and causes a heavy work and a long time.

The people of the utility model are concerned about the reason, and the active research is carried out, and the experience of related product research and development is done for many years, and the utility model is developed through continuous test and improvement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a miniature circuit breaker with switching and jump off display function can clearly and definitely show that the circuit breaker is the state of artificial disconnection or circuit fault to ensure personal safety.

In order to achieve the above object, the present invention provides a miniature circuit breaker with opening and closing and trip display functions, which comprises a bottom plate and an upper cover, wherein the upper cover is combined on the bottom plate, a window and a display panel are installed in the bottom plate, the window is arranged on the upper portion of the bottom plate, the display panel is movably installed in the bottom plate, the window is located above the sliding path of the display panel, and when the circuit breaker trips, the display panel is shifted to the corresponding position of the window.

Furthermore, the bottom plate and the upper cover are both provided with sliding chutes for the display panel to slide, the sliding chutes of the bottom plate and the upper cover are opposite, and two ends of the display panel are respectively accommodated in the sliding chutes of the bottom plate and the upper cover.

Furthermore, a handle is pivoted on the bottom plate, the handle is adjacent to the upper cover, and a mechanism component, a resetting component, a contact and a coil component are arranged in the bottom plate; the mechanism assembly comprises a supporting shaft, a supporting seat, a movable element fixing plate and a tension spring, wherein the supporting seat is pivoted and combined with the movable element fixing plate, the supporting seat is sleeved on the supporting shaft after combination, the supporting shaft is fixedly combined with the bottom plate, the movable element is fixed at the lower end of the movable element fixing plate, one end of the tension spring is fixed relative to the bottom plate, and the other end of the tension spring is fixed on the movable element fixing plate; the resetting component comprises a resetting rod, an upper connecting rod, a U-shaped connecting rod and a tripping pull rod, wherein the upper connecting rod is arranged on the supporting seat and is simultaneously contacted with the resetting rod; the contact element is provided with a contact point, the contact point is arranged corresponding to the end part of the movable element, and the movable element is selectively mutually abutted or separated with the contact point when rotating; and the coil component comprises an iron core, a coil is arranged outside the iron core, and one end of the iron core is opposite to the resetting rod.

As a further improvement, a fast-throw connecting rod is arranged on the bottom plate, the fast-throw connecting rod is provided with a combining part, a groove is arranged on the handle, the combining part is sleeved in the groove on the handle in a sliding mode, one side of the fast-throw connecting rod is opposite to the movable element fixing plate, and an elastic part is arranged on the other side of the fast-throw connecting rod in an extending mode.

When the handle is pushed by external force, the U-shaped connecting rod is linked and drives the upper connecting rod to engage with the resetting rod, the mechanism component is driven to rotate clockwise to reach an opening state, and one end of the resetting rod is located at a position corresponding to the window, namely the opening state is displayed.

When the reset rod is driven by the iron core or pulled by the trip pull rod under the excitation of large current, the reset rod rotates anticlockwise, the meshing position of the reset rod and the upper connecting rod is disengaged, the trip state is achieved, the upper connecting rod rotates anticlockwise in the process, the display panel is shifted to move to the position corresponding to the window, and the trip state is displayed.

When the miniature circuit breaker is in a closed state, one end of the upper connecting rod is located at a position corresponding to the window, namely the closed state is displayed.

Compared with the prior art, the utility model has the advantages of it is following:

1. When the existing circuit breaker is manually switched on or off, one end of the upper connecting rod is located at the position corresponding to the window, namely, the closed state is displayed. The utility model provides a miniature circuit breaker's switching and jump and take off display structure has set up a display panel, and this display panel can be stirred at the jump in-process to the circuit breaker, and the display panel removes to the window and corresponds the position, shows promptly and jumps the state, consequently can clearly and definitely show that the circuit breaker is the state of artificial disconnection or circuit fault to ensure personal safety.

2. Through the quick-throw connecting rod, can be when the short circuit breaker drops into the in-process for but the active cell and the speed of contact son contact reduce the short circuit arc light in order to reduce the active cell loss, with the promotion short circuit characteristic, but active cell and contact son can mesh completely moreover, make contact pressure and trip characteristic stable, and then promote the short circuit capacity, thereby the reproducibility is poor and lead to the problem that heavy work took time when improving the trip test.

3. The mechanism acts in a uniform mode, so that the mechanism cannot turn over, and the movable element and the contact element can be completely meshed, so that the contact pressure and the tripping characteristic are stable, and the short-circuit capacity is improved.

4. The utility model discloses a spare part equipment can adopt automatic mode to come the assemblage to save equipment man-hour and reduce cost.

5. The utility model discloses a throw the connecting rod soon, can the circuit breaker input in-process when the short circuit for but the speed of active cell and contact son contact reduces electric arc consumption active cell and contact son, in order to promote the short circuit characteristic.

Drawings

Fig. 1 is a perspective view of a conventional circuit breaker.

fig. 2 is an exploded perspective view of a base plate and an upper cover of the miniature circuit breaker.

Fig. 3 is an exploded perspective view of the miniature circuit breaker.

Fig. 4 is a schematic perspective view of the miniature circuit breaker of the present invention in an open state (ON).

fig. 5 is a schematic perspective view of the miniature circuit breaker in a trip state according to the present invention.

Fig. 6 is a front view of a partial structure of the miniature circuit breaker of the present invention.

Description of reference numerals:

(the utility model)

Bottom plate 10 and upper cover 11

Spring shaft 13 of handle 12

Mechanism assembly 20 support shaft 21

Support base 22 and movable element fixing plate 23

Tension spring 25 of movable member 24

Reset assembly 30 reset lever 31

Upper link 32U-shaped link 33

Trip lever 34 quick throw link 40

Lower end 42 of coupling portion 41

Elastic portion 43 contact 50

Contact 51 coil assembly 60

Iron core 61 coil 62

Viewing window 70 display panel 71

(Prior Art)

Bottom plate 80 handle 81

Supporting seat 82 and mover 83

Main fulcrum 84 reset lever 85

Two alloy plates 87 of reset torsion spring 86

Contact terminal 88 contact 89

Detailed Description

To further clarify the objects, features and advantages of the present invention, a better understanding of the present invention will be obtained by a person of ordinary skill in the art when considered in connection with the following detailed description of preferred embodiments.

please refer to fig. 2 to 6, fig. 2 is a perspective exploded view of a bottom plate and an upper cover of the miniature circuit breaker, fig. 3 is a perspective exploded view of the miniature circuit breaker, fig. 4 is a perspective view of the miniature circuit breaker in an open state (ON), fig. 5 is a perspective view of the miniature circuit breaker in a trip state, and fig. 6 is a front view of a partial structure of the miniature circuit breaker.

The utility model relates to a miniature circuit breaker with switching and jump and take off demonstration function, including a bottom plate 10 and an upper cover 11, upper cover 11 combines on this bottom plate 10, and the dress is equipped with a window 70 and a display panel 71 in bottom plate 10, and window 70 sets up in this bottom plate 10 upper portion, and the display panel 71 activity is installed in this bottom plate 10, and this window is located the slip path top of this display panel, and the circuit breaker is at the jump and takes off the in-process, and display panel 71 is stirred to this window 70 and corresponds the position, shows the jump status promptly.

The bottom plate and the upper cover are respectively provided with a sliding groove for the display panel to slide, the sliding groove of the bottom plate is opposite to the sliding groove of the upper cover, and two ends of the display panel are respectively accommodated in the sliding groove of the bottom plate and the sliding groove of the upper cover.

A handle 12 is pivotally connected to the base plate 10, the handle 12 is adjacent to the upper cover 11, and a mechanism assembly 20, a return assembly 30, a contact 50 and a coil assembly 60 are installed in the base plate.

The mechanism assembly 20 includes a supporting shaft 21, a supporting base 22, a movable element fixing plate 23, a movable element 24 and a tension spring 25, the supporting base is provided with a position-limiting portion 221, the movable element fixing plate 23 is provided with a front end portion 231, the supporting base 22 is pivotally connected to the movable element fixing plate 23, after being connected, the supporting base 22 is pivotally connected to the supporting shaft 21, the supporting shaft 21 is fixedly connected to the bottom plate 10, the movable element 24 is fixed to the lower end of the movable element fixing plate 23, the bottom plate 10 is fixed with a spring shaft 13, one end of the tension spring 25 is fixed to the spring shaft 13 of the bottom plate, and the other end of the tension spring is fixed to the movable element fixing plate 23.

The resetting assembly 30 includes a resetting rod 31, an upper connecting rod 32, a U-shaped connecting rod 33 and a tripping rod 34, the upper connecting rod 32 is disposed on the supporting base 22 and contacts with the resetting rod 31, the resetting rod 31 is connected with the supporting base 22, one end of the U-shaped connecting rod 33 is sleeved on the handle 12, the other end is sleeved on the upper connecting rod 32, one end of the tripping rod 34 is disposed in the bottom plate 10, and the other end is sleeved on the resetting rod 31.

The contact 50 is provided with a contact 51, the contact 51 is provided corresponding to an end of the movable element 24, and the movable element 24 selectively contacts with or separates from the contact 51 when rotating.

The coil assembly 60 includes an iron core 61, a coil 62 disposed outside the iron core 61, and one end of the iron core 61 is opposite to the return rod 31.

The base plate 10 is provided with a fast-throw connecting rod 40, the fast-throw connecting rod 40 is provided with a combining part 41, the handle 12 is provided with a groove, the combining part 41 is sleeved in the groove on the handle 12 in a sliding mode, and the fast-throw connecting rod 40 is opposite to the movable element fixing plate 23. In a more specific structure, a lower end portion 42 is disposed at a lower end of the quick-throw link 40, the lower end portion 42 is opposite to the front end portion 231 of the mover fixing plate 23, and an elastic portion 43 is extended from a side of the quick-throw link 40 and is located at a side of the quick-throw link 40 away from the mover fixing plate 23. The bottom plate 10 is provided with a plurality of protrusions, and the free end of the elastic part 43 is abutted against the protrusions on the base 10.

The bottom plate 10 is provided with a tension spring 25, the bottom plate 10 is provided with a spring shaft 13 corresponding to the tension spring 25, one end of the tension spring 25 is fixed on the spring shaft 13, and the other end is fixed on the movable element fixing plate 23.

Please refer to fig. 4 to 5, fig. 4 is a schematic perspective view of the present invention in an open state (ON), fig. 5 is a schematic perspective view of the present invention in a trip state, and please refer to fig. 2 synchronously.

When the miniature circuit breaker is in a closed state (OFF), one end of the upper link 32 is located at a position corresponding to the viewing window 70, i.e., the closed state is shown in fig. 2.

The handle 12 is pushed by external force, so that the U-shaped link 33 is linked and drives the upper link 32 to engage with the return rod 31, the mechanism assembly 20 is driven to rotate clockwise, when the mechanism assembly 20 rotates to a critical point, the front end 231 of the mobile sub fixing plate 23 contacts with the lower end 42 of the fast-throw link 40 to store energy, the handle 12 rotates continuously, the elastic part 43 of the fast-throw link 40 limits the fast-throw link 40 to be driven by the handle 12, the limiting part 221 of the supporting seat 22 limits the fast-throw link 40 from twisting, the handle 12 drives the fast-throw link 40 rapidly, so that the fast-throw link 40 is separated from the mobile sub fixing plate 23, the mechanism assembly 20 releases energy instantly, the mobile sub 24 and the contact sub 50 are closed rapidly, an open state (ON) is reached, and at this time, one end of the return rod 31 is located at a position corresponding to the window 70, i.e. the on state, as shown in fig. 4.

When the reset rod 31 is driven by the iron core 61 or the reset rod 31 is driven by the trip rod 34 under the excitation of a large current, the reset rod 31 rotates counterclockwise, the engaging position between the reset rod 31 and the upper connecting rod 32 is disengaged, and the trip state is achieved, the reset rod 31 drives the upper connecting rod 32 to rotate counterclockwise in the counterclockwise rotating process, and the upper connecting rod 32 pulls the display panel 71 to move to the position corresponding to the window 70, i.e. the trip state is displayed, as shown in fig. 5. Then, the holder 22 is rotated counterclockwise and one end of the holder is used to move the display panel 71 back to the original position, so that the display panel is separated from the window 70 and returns to the open state (ON).

To sum up, the utility model discloses a miniature circuit breaker corresponds opening, closing and the state of taking off the jump of circuit breaker, and what see from the window respectively is reset pole 31, upper connecting rod 32 and display panel 71 to can clearly and definitely show that the circuit breaker is the state of artificial disconnection or circuit fault, with the guarantee personal safety.

When opening miniature circuit breaker, through the fast throw connecting rod, can throw the in-process when the short circuit breaker for but the speed of active cell and contact son contact, reduce short circuit arc light in order to reduce the active cell loss, with the promotion short circuit characteristic, but active cell and contact son can mesh completely moreover, make contact pressure and tripping characteristic stable, and then promote the short circuit capacity, thereby the reproducibility is poor and lead to the problem that heavy work took time when improving the tripping test.

The above embodiments are merely examples for convenience of description, and the scope of the claims of the present invention shall be defined by the terms of the claims and not by the limitations of the above embodiments.

although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but may be modified and practiced by those skilled in the art without departing from the spirit and scope of the present invention.

Claims

1. A miniature circuit breaker with switching and tripping display functions is characterized in that: the circuit breaker is characterized by comprising a bottom plate and an upper cover, wherein the upper cover is combined on the bottom plate, a window and a display panel are arranged in the bottom plate, the window is arranged on the upper portion of the bottom plate, the display panel is movably arranged in the bottom plate, the window is positioned above a sliding path of the display panel, and when the circuit breaker is tripped, the display panel is shifted to a position corresponding to the window.

2. A small-sized circuit breaker having an opening and closing and trip display function as claimed in claim 1, wherein: the bottom plate and the upper cover are both provided with sliding chutes for the display panel to slide, the sliding chutes of the bottom plate and the upper cover are opposite, and two ends of the display panel are respectively accommodated in the sliding chutes of the bottom plate and the upper cover.

3. A small-sized circuit breaker having an opening and closing and trip display function as claimed in claim 1, wherein: a handle is pivoted on the bottom plate, the handle is adjacent to the upper cover, and a mechanism component, a resetting component, a contact and a coil component are arranged in the bottom plate;

The mechanism assembly comprises a supporting shaft, a supporting seat, a movable element fixing plate and a tension spring, wherein the supporting seat is pivoted and combined with the movable element fixing plate, the supporting seat is sleeved on the supporting shaft after combination, the supporting shaft is fixedly combined with the bottom plate, the movable element is fixed at the lower end of the movable element fixing plate, one end of the tension spring is fixed relative to the bottom plate, and the other end of the tension spring is fixed on the movable element fixing plate;

The resetting component comprises a resetting rod, an upper connecting rod, a U-shaped connecting rod and a tripping pull rod, wherein the upper connecting rod is arranged on the supporting seat and is simultaneously contacted with the resetting rod;

The contact element is provided with a contact point, the contact point is arranged corresponding to the end part of the movable element, and the movable element is selectively mutually abutted or separated with the contact point when rotating; and

The coil assembly comprises an iron core, a coil is arranged outside the iron core, and one end of the iron core is opposite to the resetting rod.

4. A small-sized circuit breaker having an opening and closing and trip display function according to claim 3, wherein: the bottom plate is provided with a quick-throw connecting rod, the quick-throw connecting rod is provided with a combining part, the handle is provided with a groove, the combining part is sleeved in the groove on the handle in a sliding mode, one side of the quick-throw connecting rod is opposite to the movable element fixing plate, and the other side of the quick-throw connecting rod is provided with an elastic part in an extending mode.

5. A small-sized circuit breaker having an opening and closing and trip display function according to claim 3, wherein: when the handle is pushed by external force, the U-shaped connecting rod is linked and drives the upper connecting rod to engage with the resetting rod, the mechanism component is driven to rotate clockwise to reach an opening state, and one end of the resetting rod is located at a position corresponding to the window, namely the opening state is displayed.

6. A small-sized circuit breaker having an opening and closing and trip display function according to claim 3, wherein: when the reset rod is driven by the iron core or pulled by the trip pull rod under the excitation of large current, the reset rod rotates anticlockwise, the meshing position of the reset rod and the upper connecting rod is disengaged, the trip state is achieved, the upper connecting rod rotates anticlockwise in the process, the display panel is shifted to move to the position corresponding to the window, and the trip state is displayed.

7. a small-sized circuit breaker having an opening and closing and trip display function according to claim 3, wherein: when the miniature circuit breaker is in a closed state, one end of the upper connecting rod is located at a position corresponding to the window, namely the closed state is displayed.