Novel electric operating mechanism for miniature circuit breaker

Abstract

The utility model discloses a novel electric operating mechanism for a miniature circuit breaker, and relates to the technical field of circuit breakers, the novel electric operating mechanism comprises a box body, a handle and a driving lever, one side, close to the handle, of the driving lever is provided with a protective layer, and one side, close to the driving lever, of the protective layer is fixedly connected with a plurality of spherical elastic blocks. A plurality of spherical grooves are formed in the side, close to the protective layer, of the shifting rod, and the spherical elastic blocks are clamped to the spherical grooves in a one-to-one correspondence mode. The handle of the miniature circuit breaker can be protected conveniently, so that the service life of the handle can be prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breakers, and in particular to a novel electric operating mechanism for miniature circuit breakers. Background Art

[0002] At present, for the power sector, switch circuit breaker equipment is an indispensable device to ensure power safety and line switching. With the launch of the country's smart grid plan, circuit breaker equipment has begun to move towards intelligence.

[0003] For related technologies, please refer to the Chinese utility model patent with authorization announcement number CN201655716U, which discloses an electric operating mechanism for realizing the automatic closing function of a miniature circuit breaker, including a box body, inside which are arranged a control circuit board, a motor transmission unit, and a lever connected to the output of the motor transmission unit. The lever extends out of the box body and abuts against the handle of the miniature circuit breaker. The motor transmission unit is controlled by the control circuit board, so that the lever moves the handle of the miniature circuit breaker, ultimately realizing the closing action of the circuit breaker.

[0004] However, when the lever moves the handle of the miniature circuit breaker, a large impact force is generated on the handle, which has an adverse effect on the service life of the handle. Utility Model Content

[0005] The present application provides a novel electric operating mechanism for a miniature circuit breaker, which facilitates protecting the handle of the miniature circuit breaker, thereby extending the service life of the handle, and adopts the following technical solutions:

[0006] A new electric operating mechanism for a miniature circuit breaker includes a box body, a handle, and a lever. A protective layer is installed on the side of the lever close to the handle. A plurality of spherical elastic blocks are fixedly connected to the side of the protective layer close to the lever. A plurality of spherical grooves are formed on the side of the lever close to the protective layer. The plurality of spherical elastic blocks are correspondingly engaged in the plurality of spherical grooves.

[0007] By adopting the above solution, the protective layer is provided to facilitate protection of the handle, thereby extending the service life of the handle; the spherical elastic block and the spherical groove are provided to facilitate installation of the protective layer.

[0008] Preferably, a driving mechanism for driving the protective layer to move is installed in the shifting rod.

[0009] By adopting the above solution, when it is inconvenient to remove the protective layer, the protective layer can be pushed out by the driving mechanism.

[0010] Preferably, the driving mechanism includes a through hole opened in the shift rod, a fixed tube installed in the through hole, a fixed plate fixed to the inner wall of the fixed tube, a push rod slidably connected to the fixed plate, a push plate fixed to the end of the push rod close to the protective layer, and a handle installed at the end of the push rod away from the protective layer; the push plate is slidably connected to the inner wall of the fixed tube, and a spring is provided between the push plate and the fixed plate, and the two ends of the spring are respectively fixed to the opposite inner sides of the fixed plate and the push plate.

[0011] By adopting the above solution, when the protective layer needs to be removed, the push rod is first pushed toward the protective layer by the handle. The movement of the push rod toward the protective layer drives the push plate toward the protective layer, so that the protective layer can be pushed out from the push rod. In summary, the driving mechanism provided facilitates the removal of the protective layer.

[0012] Preferably, the handle is threadedly connected to an end of the push rod away from the protective layer.

[0013] By adopting the above solution, it is convenient to install the handle on the one hand, and to store the handle in the through hole on the other hand.

[0014] Preferably, a sink groove is formed at one end of the through hole away from the protective layer, and a connecting ring is installed on the outer side wall of one end of the fixing pipe away from the protective layer, and the connecting ring is clamped to the inner wall of the sink groove.

[0015] By adopting the above solution, the provided connecting ring and sink groove facilitate the fixation of the fixed pipe.

[0016] Preferably, a plurality of clamping blocks are fixedly connected to one end of the connecting ring close to the sink, a plurality of clamping slots are provided at the bottom of the sink, and the plurality of clamping blocks are clamped in the plurality of clamping slots in a one-to-one correspondence.

[0017] By adopting the above solution, multiple clamping blocks and multiple clamping slots are provided, which facilitates the installation of the connecting ring.

[0018] Preferably, an operating hole is provided on the connecting ring.

[0019] By adopting the above solution, the operating hole is provided, which makes it easy to pull the connecting ring out of the sink.

[0020] Preferably, the connecting ring is threadedly connected to the outer side wall of the fixing tube.

[0021] By adopting the above solution, it is convenient to connect the connecting ring to the outer side wall of the fixed pipe.

[0022] Preferably, the outer side wall of the fixed tube is fixedly connected with a limiting ring, and the connecting ring can abut against the limiting ring; an annular groove for inserting the limiting ring is provided on the sink.

[0023] By adopting the above solution, the limiting ring is provided, which facilitates the limiting of the connecting ring.

[0024] In summary, this application has the following beneficial effects:

[0025] 1. The protective layer is provided to protect the handle, thereby extending the service life of the handle; the spherical elastic block and spherical groove are provided to facilitate the installation of the protective layer;

[0026] 2. When the protective layer needs to be removed, the push rod is first pushed toward the protective layer by the handle. The push rod moves toward the protective layer, which drives the push plate toward the protective layer, thereby pushing the protective layer from the push rod. In summary, the drive mechanism provided facilitates the removal of the protective layer.

[0027] 3. The limiting ring is set to facilitate the limiting of the connecting ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0029] Figure 2 This is a structural diagram highlighting the connection between the protective layer and the shifting rod in the embodiment of the present application;

[0030] Figure 3 This is a structural diagram highlighting the driving mechanism in the embodiment of the present application.

[0031] Explanation of the accompanying reference numerals: 1. Box body; 11. Handle; 2. Push rod; 21. Spherical groove; 3. Protective layer; 31. Spherical elastic block; 4. Driving mechanism; 41. Through hole; 411. Sink; 412. Clamping groove; 413. Annular groove; 42. Fixed tube; 43. Fixed plate; 44. Push rod; 45. Push plate; 46. Handle; 47. Spring; 48. Connecting ring; 481. Clamping block; 482. Operating hole; 49. Limiting ring. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0034] This application discloses a new electric operating mechanism for a miniature circuit breaker, such as Figure 1 and Figure 2As shown, the device comprises a housing 1, a handle 11, and a lever 2. A protective layer 3 is mounted on the side of the lever 2 near the handle 11. Multiple spherical elastic blocks 31 are fixedly attached to the protective layer 3 near the lever 2. Multiple spherical grooves 21 are formed on the side of the lever 2 near the protective layer 3. The spherical elastic blocks 31 are correspondingly engaged with the spherical grooves 21. The protective layer 3 protects the handle 11, thereby extending its service life. The spherical elastic blocks 31 and spherical grooves 21 facilitate the installation of the protective layer 3.

[0035] like Figure 2 and Figure 3 As shown, a driving mechanism 4 for driving the protective layer 3 to move is installed in the shifting rod 2. When it is inconvenient to remove the protective layer 3, the protective layer 3 can be pushed out by the driving mechanism 4.

[0036] like Figure 2 and Figure 3 As shown, the driving mechanism 4 includes a through hole 41 opened in the shift rod 2, a fixed tube 42 installed in the through hole 41, a fixed plate 43 fixed to the inner wall of the fixed tube 42, a push rod 44 connected to the fixed plate 43 by sliding along the axial direction of the fixed tube 42, a push plate 45 fixed to the end of the push rod 44 close to the protective layer 3, and a handle 46 installed at the end of the push rod 44 away from the protective layer 3; the push rod 44 is arranged to pass through the fixed plate 43, the push plate 45 is connected to the inner wall of the fixed tube 42 by sliding along the axial direction of the fixed tube 42, and a spring 47 is arranged between the push plate 45 and the fixed plate 43. The spring 47 is arranged along the axial direction of the fixed tube 42, and the two ends of the spring 47 are respectively fixed to the opposite inner sides of the fixed plate 43 and the push plate 45. When the protective layer 3 needs to be removed, the push rod 44 is first pushed toward the protective layer 3 by the handle 46. The movement of the push rod 44 toward the protective layer 3 drives the push plate 45 toward the protective layer 3, so that the protective layer 3 can be pushed out from the lever 2. In summary, the driving mechanism 4 is provided to facilitate the removal of the protective layer 3.

[0037] like Figure 2 and Figure 3 As shown, the handle 46 is coaxially arranged with the push rod 44 , and the handle 46 is threadedly connected to the end of the push rod 44 away from the protective layer 3 . This makes it easy to install the handle 46 and to accommodate the handle 46 in the through hole 41 .

[0038] like Figure 2 and Figure 3 As shown, a recessed groove 411 is formed at one end of the through hole 41 away from the protective layer 3, and a connecting ring 48 is threadedly connected to the outer wall of the end of the fixing tube 42 away from the protective layer 3. The connecting ring 48 is snapped onto the inner wall of the recessed groove 411. The connecting ring 48 and the recessed groove 411 facilitate the fixing of the fixing tube 42.

[0039] like Figure 2 and Figure 3 As shown, the connecting ring 48 has multiple latches 481 fixedly attached to one end near the sink 411. The bottom of the sink 411 has multiple latching slots 412, and the multiple latches 481 are correspondingly engaged with the multiple latching slots 412. The multiple latches 481 and the multiple latching slots 412 facilitate the installation of the connecting ring 48. The connecting ring 48 also has an operating hole 482, which facilitates the removal of the connecting ring 48 from the sink 411.

[0040] like Figure 2 and Figure 3 As shown, the outer wall of the fixed tube 42 is fixed with a limit ring 49, and the connecting ring 48 can abut against the limit ring 49; the recessed groove 411 is provided with an annular groove 413 for inserting the limit ring 49. The limit ring 49 is provided to facilitate the limiting of the connecting ring 48.

[0041] Working principle: The protective layer 3 is provided to protect the handle 11, thereby extending the service life of the handle 11; the spherical elastic block 31 and the spherical groove 21 are provided to facilitate the installation of the protective layer 3.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A novel electric operating mechanism for a miniature circuit breaker, comprising a box body (1), a handle (11) and a lever (2), characterized in that: A protective layer (3) is installed on the side of the lever (2) close to the handle (11), and a plurality of spherical elastic blocks (31) are fixedly connected to the side of the protective layer (3) close to the lever (2). A plurality of spherical grooves (21) are opened on the side of the lever (2) close to the protective layer (3), and the plurality of spherical elastic blocks (31) are correspondingly connected to the plurality of spherical grooves (21).

2. The novel electric operating mechanism for a miniature circuit breaker according to claim 1, characterized in that: A driving mechanism (4) for driving the protective layer (3) to move is installed in the shifting rod (2).

3. The novel electric operating mechanism for a miniature circuit breaker according to claim 2, characterized in that: The driving mechanism (4) comprises a through hole (41) provided in the shifting rod (2), a fixed tube (42) installed in the through hole (41), a fixed plate (43) fixed to the inner wall of the fixed tube (42), a push rod (44) slidably connected to the fixed plate (43), a push plate (45) fixed to one end of the push rod (44) close to the protective layer (3), and a handle (46) installed to one end of the push rod (44) away from the protective layer (3); the push plate (45) is slidably connected to the inner wall of the fixed tube (42), a spring (47) is provided between the push plate (45) and the fixed plate (43), and two ends of the spring (47) are respectively fixed to the opposite inner sides of the fixed plate (43) and the push plate (45).

4. The novel electric operating mechanism for a miniature circuit breaker according to claim 3, characterized in that: The handle (46) is threadedly connected to an end of the push rod (44) away from the protective layer (3).

5. The novel electric operating mechanism for a miniature circuit breaker according to claim 3, characterized in that: A sink groove (411) is provided at one end of the through hole (41) away from the protective layer (3), and a connecting ring (48) is installed on the outer side wall of one end of the fixed tube (42) away from the protective layer (3), and the connecting ring (48) is clamped to the inner wall of the sink groove (411).

6. The novel electric operating mechanism for a miniature circuit breaker according to claim 5, characterized in that: A plurality of clamping blocks (481) are fixedly connected to one end of the connecting ring (48) close to the sink (411); a plurality of clamping slots (412) are provided at the bottom of the sink (411); and the plurality of clamping blocks (481) are clamped in the plurality of clamping slots (412) in a one-to-one correspondence.

7. The novel electric operating mechanism for a miniature circuit breaker according to claim 6, characterized in that: An operating hole (482) is provided on the connecting ring (48).

8. The novel electric operating mechanism for a miniature circuit breaker according to claim 5, characterized in that: The connecting ring (48) is threadedly connected to the outer wall of the fixing tube (42).

9. The novel electric operating mechanism for a miniature circuit breaker according to claim 6, characterized in that: The outer wall of the fixed tube (42) is fixedly connected to a limiting ring (49), and the connecting ring (48) can abut against the limiting ring (49); and an annular groove (413) for inserting the limiting ring (49) is provided on the sink (411).

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