CN218004747U - plug-in circuit breaker - Google Patents

Abstract

The utility model provides a plug-in circuit breaker, includes circuit breaker casing and the locking mechanical system of setting in the circuit breaker casing, locking mechanical system includes the locking piece, and the locking piece is equipped with and can stretches out the circuit breaker casing outside and retract the locking arch in the circuit breaker casing, still including being used for exerting the drawing mechanism of drawing the effort to plug-in circuit breaker, is equipped with the slider in the circuit breaker casing, is equipped with the slip hole on at least one lateral wall of circuit breaker casing, drawing the mechanism and including stretching into the drive structure in the circuit breaker casing through the slip hole from the circuit breaker casing outside, the drive structure pass the slip hole with the slider is connected, when exerting the pulling force through drawing the mechanism, the drive structure drives the slider and slides the drive locking piece and removes, makes the protruding withdrawal of locking in the circuit breaker casing to extract plug-in circuit breaker, simple structure is convenient, easily installation and change.

Description

plug-in circuit breaker

technical field

The invention relates to the field of low-voltage electrical appliances, in particular to a plug-in circuit breaker.

Background technique

With the development of communication technology, communication cabinets have further put forward requirements on the height direction and the installation method of circuit breakers, and the power distribution space of equipment has been further compressed. 1U size and height circuit breakers and plug-in installation methods follow the trend, but most of the existing 1U The size of the plug-in circuit breaker is difficult to take out after being installed in the cabinet, and it is not easy to operate. This type of plug-in circuit breaker is plugged into the cabinet side by side. When taking it out, the circuit breaker is taken out of the cabinet by pulling the opening and closing button of the circuit breaker. Because the height and thickness of the operating surface of the circuit breaker exposed to the cabinet are about 4cm and 2cm respectively (It can also be thicker or thinner, of course). The button is small and inconvenient to pull out, which may easily lead to false closing or opening operation.

Currently, for a plug-in circuit breaker using a handle as an opening and closing operation part, it is usually necessary to provide an independent unlocking mechanism and/or a pulling mechanism on the circuit breaker housing, which is costly.

In addition, when multiple independent circuit breaker poles are spliced side by side to form a multi-pole plug-in circuit breaker, each circuit breaker pole is equipped with an independent pulling mechanism, and an additional structure is required to pull out each circuit breaker pole. When the mechanisms are spliced together, the structure is more complicated, and the space occupied is also larger, which is not easy to use.

Contents of the invention

The purpose of the invention is to overcome the defects of the prior art and provide a plug-in circuit breaker.

To achieve the above object, the present invention adopts the following technical solutions:

A plug-in circuit breaker, comprising a circuit breaker housing and a locking mechanism arranged in the circuit breaker housing, the locking mechanism includes a locking member, and the locking member is provided with a locking member that can extend out of the circuit breaker housing and retract into the circuit breaker housing The locking protrusion also includes a pull-out mechanism for applying a pull-out force to the plug-in circuit breaker, a slide block is provided in the circuit breaker housing, and a slide hole is provided on at least one side wall of the circuit breaker housing, so The drawing mechanism includes a driving structure extending from the outside of the circuit breaker housing through a sliding hole into the circuit breaker housing. The driving structure passes through the sliding hole and is connected with the slider. When a pulling force is applied by the pulling mechanism, the driving structure drives the sliding block. The sliding block drives the locking member to move, causing the locking protrusion to retract into the circuit breaker housing to pull out the plug-in circuit breaker.

Preferably, the locking piece is installed in the circuit breaker housing for rotation or sliding, and the locking protrusion is provided on the locking piece. The elastic piece drives the locking piece to move so that the locking protrusion protrudes outside the circuit breaker housing, and the sliding block slides directly Or indirectly drive the locking part to move against the force of the elastic part, so that the locking protrusion retracts into the circuit breaker housing.

Preferably, the slider is provided with an inclined surface, and the inclined surface is arranged obliquely relative to the sliding direction of the slider, and the sliding through the inclined surface drives the locking member to move, so that the locking protrusion retracts into the circuit breaker housing.

Preferably, the driving structure includes a driving protruding rod, and the driving protruding rod protrudes from the sliding hole into the inside of the circuit breaker housing.

Preferably, the pulling mechanism includes a puller, the puller includes an operating rod and two connecting rods, one end of the two connecting rods is respectively connected to the operating rod, and the ends of the two connecting rods are bent toward each other. There is a driving lug as a driving mechanism.

Preferably, the circuit breaker housing includes an opposite operating surface and a rear end surface, an opposite upper side wall and a lower side wall, and two opposite side walls. The closing operating part is provided with a locking hole on the upper side wall and/or the lower side wall, the locking protrusion protrudes from the locking hole, and the sliding holes are provided on both side walls; The sliding hole is long, and its length direction is parallel to the direction in which the plug-in circuit breaker is inserted into the cabinet, and perpendicular to the plane where the operation surface is located.

Preferably, the pulling mechanism includes an operating structure, a driving structure and a connecting structure connected between the operating structure and the driving structure, the operating structure is used to apply a pulling force, and at least one side of the circuit breaker housing The wall is also provided with a first accommodation groove for accommodating the connection structure of the pulling mechanism so that the connection structure does not protrude from the side wall of the circuit breaker housing, and the sliding hole is arranged in the first accommodation groove.

Preferably, the operating surface of the circuit breaker housing is provided with a second accommodation groove for accommodating at least part of the operating structure.

Preferably, the pulling mechanism includes an operating structure, a driving structure and a connecting structure connected between the operating structure and the driving structure, the operating structure is set corresponding to the operating surface of the circuit breaker housing, the operating member is a handle, and the handle When turning to the closing position, the operating structure is blocked, and when turning to the opening position, the operating structure is avoided.

Preferably, both sides of the slider are provided with connecting holes for connecting with the driving structure of the pulling mechanism, or the connecting holes pass through the slider.

Preferably, the middle part of the locking piece is rotatably installed in the circuit breaker housing, and the upper side of one end is protruded with the locking protrusion, and the other end is protruded with a driving arm, and the elastic piece drives the locking piece to rotate to make the locking protrusion The slider protrudes out of the circuit breaker housing, and the sliding block drives the locking member to rotate through the driving arm, so that the locking protrusion retracts into the circuit breaker housing.

Preferably, the locking member is linearly slidably arranged in the circuit breaker housing, and the elastic member drives the locking member to slide linearly so that the locking protrusion protrudes out of the circuit breaker housing, and the locking mechanism also includes an unlocking lever, one end of which is hinged to the locking member , the other end of the unlocking lever is located on the sliding route of the slider, and the sliding of the slider drives the unlocking lever to rotate and then drives the locking piece to slide, so that the locking protrusion retracts into the circuit breaker housing.

Preferably, the middle part of the unlocking lever rotates with the unlocking projection in the circuit breaker housing as a fulcrum, or the middle part of the unlocking lever is rotatably mounted on the circuit breaker housing, or the middle part of the unlocking lever is provided with a bending part or a rotating protrusion It is used to abut against the inner wall of the circuit breaker housing as a fulcrum for the rotation of the unlocking lever.

Preferably, a reset member is also provided in the circuit breaker housing, and the reset member acts on the slider to drive the pulling mechanism to reset.

Preferably, it includes a plurality of circuit breaker poles, each circuit breaker pole includes a circuit breaker housing, the side walls on both sides of the circuit breaker housing are provided with the sliding holes, and the circuit breaker housings of the multiple circuit breaker poles are arranged side by side The sliding holes are arranged correspondingly, and the driving structure connects the sliders in the multiple circuit breaker housings through the sliding holes of the multiple circuit breaker housings to drive the locking mechanisms in the multiple circuit breaker housings to unlock synchronously and synchronously Pull multiple breaker poles out of the cabinet.

Preferably, the driving structure includes a driving protrusion and a pull-out linkage, and the pull-out linkage at least passes through the sliding hole of the adjacent side wall of the adjacent circuit breaker housing to move the sliding block in the adjacent circuit breaker housing To connect, the driving protruding rods at least pass through the sliding holes on the outer side walls of the two outermost circuit breaker housings to connect with the corresponding sliders, and the pulling linkage is linked with the driving protruding rods.

Preferably, the driving structure includes a pull-out linkage, and the pull-out linkage passes through a plurality of circuit breaker housings and sliders in the plurality of circuit breaker housings through sliding holes and is linked with the driving protrusion; or, The driving structure includes a plurality of pull-out linkages, each pull-out linkage is arranged between two adjacent circuit breaker housings, and passes through the adjacent side walls of the two adjacent circuit breaker housings. The sliding holes connect the sliding blocks in the adjacent circuit breaker housings, and the multiple pulling linkages and the driving protrusions are linked through the sliding blocks.

The plug-in circuit breaker created by the present invention has a sliding hole on the side wall of the circuit breaker housing, so that the driving structure of the pulling mechanism can be inserted into the circuit breaker housing from the outside of the circuit breaker housing and connected with the slider for The drive locking mechanism is unlocked. When the pulling force is applied by the pulling mechanism, when the driving structure is driven to slide along the sliding hole, the locking mechanism is driven by the slider to unlock, and the plug-in circuit breaker is pulled out at the same time. The structure is simple and convenient, and it is easy to install and replace.

In particular, not only can the plug-in circuit breaker with a single pole of the circuit breaker, or a multi-pole plug-in circuit breaker with multiple circuit breaker poles assembled side by side, the corresponding pulling mechanism can be replaced on the outside, so that the pulling mechanism can form a One-piece structure, easy to install and replace.

In addition, the pulling mechanism includes a puller, and also includes a puller linkage, and the puller linkage passes through the sliding hole of the adjacent side wall of the adjacent circuit breaker housing to connect with the slider, and the puller linkage passes through The slider is plugged and linked and linked with the puller, and the locking mechanism of multiple circuit breaker poles is linked by the puller linkage to synchronously drive the locking mechanism of the multi-pole plug-in circuit breaker to unlock synchronously, and synchronously insert the multi-pole Pull out the circuit breaker from the cabinet.

Description of drawings

Fig. 1 is a schematic structural diagram of a circuit breaker housing and a pulling mechanism of a plug-in circuit breaker in Embodiment 1;

Fig. 2 is a schematic structural view of the circuit breaker housing of Embodiment 1, with the pulling mechanism in Fig. 1 removed;

Fig. 3 is a structural schematic diagram of the locking mechanism and the pulling mechanism in the circuit breaker housing of the first embodiment, and the locking mechanism is in the locked state at this time;

Fig. 4 is a structural schematic diagram of the locking mechanism and the pulling mechanism in the circuit breaker housing of the first embodiment, and the locking mechanism is in an unlocked state at this time;

Fig. 5 is a schematic structural view of the puller of Embodiment 1;

Fig. 6 is a schematic structural view of the slider of Embodiment 1;

Fig. 7 is a structural schematic diagram of the locking mechanism and the pulling mechanism in the circuit breaker housing of the second embodiment;

Fig. 8 is a structural schematic diagram of the locking mechanism and the pulling mechanism in the circuit breaker housing of the second embodiment, with the pulling parts removed;

Fig. 9 is an exploded view of the assembly of the drawing part, the drawing linkage and the slider in the second embodiment;

Fig. 10 is a schematic structural diagram of the assembly of the drawing part, the drawing linkage part and the slider in the second embodiment;

Fig. 11 is a schematic structural view of the slider of the second embodiment;

Fig. 12 is a sectional view of the slider of the second embodiment.

detailed description

The following examples given in conjunction with the accompanying drawings further illustrate the specific implementation of the plug-in circuit breaker created by the present invention. The plug-in circuit breaker created by the present invention is not limited to the description of the following embodiments.

As shown in Figure 1-2, a plug-in circuit breaker includes a circuit breaker housing 4 and an operating mechanism, a moving contact, a static contact, and a protection mechanism arranged in the circuit breaker housing 4 And locking mechanism 2 and other components. The circuit breaker housing 4 has a cuboid hexahedron structure, including an opposite operating surface and a rear end surface, an opposite upper side wall and a lower side wall, and two opposite side walls, the two side walls, the upper The side wall and the lower side wall are connected between the operation surface and the rear end surface. The operating surface is provided with an operating part 3 for driving the circuit breaker to open. The operating part 3 is connected to the operating mechanism. The operating part 3 can be a handle or a button. The busbars in the cabinet are mated, and the operation surface can also be provided with an indication window to indicate the opening and closing status of the circuit breaker. The operation surface can be provided with or without connection terminals, and the plug-in circuit breaker is inserted into the cabinet. Basically only the operating surface is exposed outside the cabinet; locking holes are provided on the upper side wall and/or the lower side wall, and the locking mechanism 2 includes a locking mechanism that can extend out of the circuit breaker housing 4 and retract into the circuit breaker housing 4 The locking protrusion 24 protrudes from the locking hole for limited cooperation with the cabinet, and the plug-in circuit breaker is limitedly locked in the cabinet, and the locking protrusion 24 is retracted from the locking hole to the circuit breaker housing 4 When inside, the plug-in circuit breaker can be pulled out from the cabinet. Usually, the direction of the operating surface is the length direction of the circuit breaker, the direction of the upper side wall to the lower side wall is the height direction of the circuit breaker, and the two sides The direction between the walls is the width direction of the circuit breaker, which is the prior art and will not be repeated here.

An improvement point of the present application is that it also includes a pull-out mechanism 1 for applying a pull-out force to the plug-in circuit breaker. 4 and retract the locking protrusion 24 in the circuit breaker housing 4; a slider 11 is provided in the circuit breaker housing 4, and a sliding hole is provided on at least one side wall of the circuit breaker housing 4, and the pull The pulling mechanism 1 includes a driving structure extending from the outside of the circuit breaker housing 4 through a sliding hole into the circuit breaker housing 4. The driving structure passes through the sliding hole and is connected to the slider 11. When the pulling force is applied by the pulling mechanism 1 , the driving structure drives the sliding block 11 to slide and drive the locking member 20 to move, so that the locking protrusion 24 retracts into the circuit breaker housing 4, and at the same time exerts a pulling force on the plug-in circuit breaker to pull out the plug-in circuit breaker.

In the plug-in circuit breaker created by the present invention, a sliding hole is provided on the side wall of the circuit breaker housing 4, so that the driving structure of the pulling mechanism 1 can be inserted into the circuit breaker housing 4 from the outside of the circuit breaker housing 4 and slide. Block 11 is connected to drive the locking mechanism 2 to unlock. When the pulling force is applied by the pulling mechanism 1, when the driving structure is driven to slide along the sliding hole, the locking mechanism 2 is driven to unlock through the slider 11, and the plug-in circuit breaker is pulled out at the same time. , Simple and convenient structure, easy to install and replace. In particular, not only for a single circuit breaker pole plug-in circuit breaker, or a multi-pole plug-in circuit breaker in which multiple circuit breaker poles are assembled side by side, the corresponding pull-out mechanism 1 can be replaced on the outside, so that the pull-out mechanism 1 Can form a one-piece structure, easy to install and replace.

Embodiment 1 as shown in Figure 1-6

As shown in Figure 5, the pulling mechanism 1 includes an operating structure, a driving structure and a connecting structure connected between the operating structure and the driving structure, the operating structure is used to apply a pulling force manually or by means of a tool, the The operating structure is set corresponding to the operating surface of the circuit breaker housing 4 for easy operation. Preferably, the operating part 3 is a handle, which blocks the operating structure when the handle is turned to the closing position, and avoids the operating structure when turning to the opening position, so as to ensure that the pulling mechanism can only be operated when the circuit breaker is opened. 1. As shown in Figure 1-2, this is the state when the circuit breaker is off.

As shown in Fig. 5, the pulling mechanism 1 of the present embodiment includes a puller 10, and the puller 10 includes an operating rod 105 as an operating structure and a connecting rod 103 as a connecting structure, and one end of the two connecting rods 103 They are respectively connected with the operating rods 105 to form a U-shaped structure. The ends of the two connecting rods 103 are bent towards each other and provided with a driving protruding rod 101 as a driving structure. The driving protruding rod 101 extends into the circuit breaker housing 4 through the sliding hole. Inside, it cooperates with the limit of the plug-in circuit breaker to pull out the plug-in circuit breaker. Of course, as a degraded embodiment, only one driving protrusion 101 may also be provided. In particular, the driving protrusion 101 can also slide in the sliding hole to directly or indirectly drive the locking mechanism 2 to unlock, even if the locking protrusion 24 is retracted into the circuit breaker housing 4, the limit of the plug-in circuit breaker and the cabinet is released. .

As shown in Figure 1-2, an operating member 3 is provided on the operating surface of the circuit breaker housing 4, a connecting terminal is provided on the rear end surface opposite to the operating surface, and a terminal is provided on the upper side wall of the circuit breaker housing 4. There is a locking hole, and the locking protrusion 24 in the circuit breaker housing 4 protrudes from the locking hole. There are sliding holes on both side walls of the circuit breaker housing 4, and the driving protruding rod 101 extends into the circuit breaker from the sliding hole. Inside the device housing 4. The sliding hole is elongated, and its length direction is parallel to the direction in which the plug-in circuit breaker is inserted into the cabinet, and perpendicular to the plane where the operation surface is located.

The operating rod 105 and the connecting rod 103 are located outside the circuit breaker housing 4, and the operating rod 105 is located on the side of the operating surface, which is convenient for people to pull manually or with the help of tools. The two connecting rods 103 correspond to the two sides of the circuit breaker housing 4 respectively. wall. The operating rod 105 described in this embodiment is a straight-shaped rod-shaped structure, which can also be bent into a V-shape or arc-shaped according to needs. Structures such as handles, handles, rings, or hooks are used as the operating structures.

Preferably, at least one of the side walls on both sides of the circuit breaker housing 4 is further provided with a first accommodation groove 133 for accommodating the connecting structure of the pulling mechanism 1, and the sliding hole is arranged in the first accommodation groove 133, the connection structure can be limited and slid in the first receiving groove 133, and the connection structure does not protrude from both side walls of the circuit breaker housing 4, and does not affect the width of the plug-in circuit breaker, nor does it affect multiple Plug-in circuit breakers are spliced side by side to form a multi-pole circuit breaker. The length of the first receiving groove 133 may be greater than or equal to the length of the sliding hole. Preferably, the operating surface of the circuit breaker housing 4 is further provided with a second accommodation groove 135 for accommodating at least part of the operating structure. The second accommodating groove 135 of this embodiment is used for accommodating the entire operating rod 105 as an operating structure, and a notch is provided in the second accommodating groove 135 to facilitate pulling out the operating rod 105 .

As shown in Figures 3-4, the locking mechanism 2 of this embodiment includes a locking piece 20, which is installed in the circuit breaker housing 4 for rotation or sliding, and the locking piece 20 is provided with a locking protrusion. Lift 24, the elastic member 23 drives the locking member 20 to move so that the locking protrusion 24 protrudes out of the circuit breaker housing 4. A slider 11 is provided inside the circuit breaker housing 4, the sliding of the slider 11 can drive the locking member 20 to overcome the force of the elastic member 23, and drive the locking member 20 to move so that the locking protrusion 24 retracts into the circuit breaker housing 4 Inside, the driving structure of the pulling mechanism 1 is connected with the slider 11 through the sliding hole. The slider 11 can directly or indirectly drive the locking member 20 .

An embodiment as shown in Figures 3-4, the locking member 20 is linearly slidably disposed in the circuit breaker housing 4, and the elastic member 23 drives the locking member 20 to linearly slide so that the locking protrusion 24 protrudes from the circuit breaker housing 4 In addition, the sliding direction of the locking member 20 is perpendicular to the direction in which the circuit breaker is inserted into the cabinet. The locking mechanism 2 also includes an unlocking lever 21, the first end of the unlocking lever 21 is hinged to the locking member 20, and the second end of the other end cooperates with the slider 11, and is located on the sliding route of the slider 11. The sliding of the block 11 lifts the second end of the unlocking lever 21, so that the unlocking lever 21 rotates around the unlocking protrusion 22 in the circuit breaker housing 4, and presses down the locking member 20 through the first end, so that the locking protrusion 24 retracts to break the circuit. In the breaker housing 4, after the slide block 11 is limited by the circuit breaker housing 4, continue to pull out the plug-in circuit breaker from the cabinet through the puller 10. Preferably, the slider 11 is provided with an inclined surface 112, and the inclined surface 112 is arranged obliquely relative to the sliding direction of the slider 11. The sliding of the slider 11 lifts the second end of the unlocking lever 21 through the inclined surface 112, driving the unlocking lever 21 rotates and drives the locking member 20 to slide, so that the locking protrusion 24 retracts into the circuit breaker housing 4 . When the slider 11 is reset, the elastic member 23 drives the locking member 20 to reset and the locking protrusion 24 protrudes out of the circuit breaker housing 4 . The elastic member 23 can be various elastic members such as a compression spring, a torsion spring, and a leaf spring. It should be noted that the unlocking lever 21 in this embodiment rotates with the unlocking protrusion 22 in the circuit breaker housing 4 as a fulcrum. Obviously, the unlocking lever 21 can also be directly rotated and installed on the circuit breaker housing 4 in the middle, or , the middle part of the unlocking lever 21 is provided with a bent part 212 or a rotating protrusion, which is used to abut against the inner wall of the circuit breaker housing 4 as a fulcrum for the unlocking lever 21 to rotate, or other similar solutions are all possible.

Preferably, a reset member 12 is also provided in the circuit breaker housing 4, and the reset member 12 acts on the slider 11. When the puller 10 is released, the reset member 12 can drive the slider 11 to reset, and at the same time The puller 10 is reset to the initial position, such as entering the second receiving groove 135 , and the reset member 12 can be various elastic members such as compression springs, torsion springs, and leaf springs. As a degraded embodiment, the reset member 12 may not be provided, and the puller 10 and the slide block 11 may be manually driven to reset.

Another embodiment is that the middle part of the locking member 20 is rotatably installed in the circuit breaker housing 4, the locking protrusion 24 is protruded on the upper side of one end, and the driving arm is protruded on the other end, and the elastic member 23 drives the locking member 20 to rotate so that the locking protrusion 24 extends out of the circuit breaker housing 4 , and the sliding block 11 slides through the driving arm to drive the locking member 20 to rotate so that the locking protrusion 24 retracts into the circuit breaker housing 4 . Preferably, the slider 11 is provided with an inclined surface 112 that cooperates with the driving arm, and the inclined surface 112 is arranged obliquely relative to the sliding direction of the slider 11. The sliding of the slider 11 lifts the driving arm through the inclined surface 112, so that the locking member 20 rotates and the locking protrusion 24 retracts into the circuit breaker housing 4 , when the slider 11 is reset, the elastic member 23 drives the locking member 20 to rotate and the locking protrusion 24 extends out of the circuit breaker housing 4 .

As shown in Figure 6, a preferred embodiment of the slider 11, the slider 11 of this embodiment includes a connection hole 111 and a slope 112 for connecting with the driving structure of the pulling mechanism 1, and the driving protrusion 101 passes through The sliding hole is inserted into the connecting hole 111 to connect with the sliding 11. In this embodiment, two connecting holes 111 are provided on both sides of the sliding block 11 to cooperate with the two driving protrusions 101 of the drawing member 10, or the connecting The hole 111 runs through the slider 11 , and of course only one connecting hole 111 may be provided. The slope 112 is used to drive the locking member 20 to unlock, so that the locking protrusion 24 retracts into the circuit breaker housing 4 .

Example 2 as shown in Figure 7-12

The cooperation structure of the plug-in circuit breaker and the pull-out mechanism 1 in this embodiment is not only suitable for single-pole plug-in circuit breakers, but also suitable for multi-pole plug-in circuit breakers. The multi-pole plug-in circuit breaker includes a plurality of circuit breaker poles arranged side by side, and each circuit breaker pole includes a circuit breaker housing 4, that is, a plurality of circuit breaker housings 4 shown in FIG. 1 are arranged side by side. The circuit breaker housing 4 includes elements such as an operating mechanism, a moving contact, a static contact, a protection mechanism, and a locking mechanism 2; The circuit breaker housings 4 are arranged side by side, the side walls of the adjacent circuit breaker housings 4 are close to each other, and the sliding holes are arranged correspondingly, and the operating parts 3 of multiple circuit breaker poles are linked.

The improvement of this embodiment is that the driving structure of the pulling mechanism 1 connects the sliders 11 in the multiple circuit breaker housings 4 through the sliding holes of the multiple circuit breaker housings 4 to synchronously drive multiple circuit breakers The locking mechanism 2 inside the casing 4 is unlocked synchronously, and multiple circuit breaker poles are pulled out from the cabinet synchronously.

As shown in Figures 9-10, the drawing mechanism 1 of this embodiment includes a drawing member 10, and also includes a drawing linkage 13, and the driving structure includes a driving protrusion 101 and a drawing linkage 13, and the drawing linkage 13 At least pass through the sliding hole of the adjacent side wall of the adjacent circuit breaker housing 4 to connect the slider 11 in the adjacent circuit breaker housing 4, and the driving protrusion 101 of the puller 10 passes through the outermost side at least The sliding holes on the outer side walls of the two circuit breaker housings 4 are connected to the sliders 11 in the corresponding circuit breaker housings 4, and the pull linkage 13 is linked with the driving protrusion 101 to synchronously drive multiple circuit breakers The locking mechanism 2 inside the casing 4 is unlocked synchronously, and multiple circuit breaker poles are pulled out from the cabinet synchronously.

The structure of the puller 10 is basically the same as that of Embodiment 1, including an operating rod 105 as an operating structure, two connecting rods 103 as a connecting structure, and a drive structure in which the ends of the two connecting rods 103 are bent toward each other. The difference is that the length of the operating rod 105 is greater than that of Embodiment 1, which is used to match plug-in circuit breakers with different numbers of poles. The puller 10 in the figure is suitable for three-pole plug-in circuit breakers , Of course, the puller 10 suitable for two-pole, four-pole or more-pole circuit breakers can also be provided.

The pulling linkage 13 of this embodiment is in the shape of a straight rod, and the driving structure of the pulling mechanism 1 includes a plurality of pulling linkages 13, and each pulling linkage 13 is arranged on two adjacent open circuit breakers. Between the breaker housings 4, and through the sliding holes on the adjacent side walls of two adjacent circuit breaker housings 4, the sliders 11 in the adjacent circuit breaker housings 4 are connected, and multiple pull-out linkages Part 13 and driving convex rod 101 are linked through slide block 11. The pull-out linkage 13 of this embodiment is inserted into the sliding hole of the adjacent circuit breaker housing 4, connected with the slider 11 in the adjacent circuit breaker housing 4, and links the sliders 11 of multiple circuit breaker poles , the driving protrusions 101 of the puller 10 are used to be inserted into the sliding holes of the two outermost circuit breaker housings 4, and connected to the sliders 11 in the two outermost circuit breaker housings 4, through the puller 10 and pull-out linkage 13 realize the synchronous sliding of each slider 11 to synchronously drive the locking mechanism 2 of multiple circuit breaker poles to unlock synchronously, and synchronously pull out the multi-pole plug-in circuit breaker from the cabinet.

The locking mechanism 2 of this embodiment includes a locking member 20, an elastic member 23 and an unlocking lever 21. The slider 11 slides and drives the unlocking lever 21 to press down the locking member 20, so that the locking protrusion 24 retracts into the circuit breaker housing 4, After the slide block 11 is limited by the circuit breaker housing 4 , the plug-in circuit breaker is pulled out from the cabinet through the puller 10 . The locking mechanism 2 and the sliding block 11 of this embodiment can adopt the same or similar scheme as that of the first embodiment, and the principle is the same, so it will not be repeated here.

The locking mechanism 2 and the slider 11 of this embodiment are slightly different from the first embodiment in that the slider 11 of this embodiment does not have a slope 12, and the slider 11 directly drives one end of the unlocking lever 21 to lift, and the other end to go down. Press lock 20. Specifically, when the slider 11 is in the initial position, it avoids the unlocking lever 21, and the middle part of the unlocking lever 21 is also bent so that one end of the unlocking lever 21 is inclined to avoid the slider 11, and the slider 11 will slide the unlocking lever 21 Lift one end. The bending part 212 in the middle of the locking mechanism 2 of this embodiment also serves as the fulcrum for the rotation of the unlocking lever 21, and the unlocking protrusion 22 is no longer provided inside the circuit breaker housing 4. Of course, the unlocking protrusion 22 can also be provided as required. . Preferably, a reset member 12 is also provided in the circuit breaker housing 4, and the reset member 12 acts on the slider 11. When the puller 10 is released, the reset member 12 can drive the slider 11 to reset, and at the same time The puller 10 is reset to the initial position.

As shown in Figures 11-12, the two sides of the slider 11 are provided with connection holes 111 for connecting with the driving linkage 13 as the driving structure or the driving protrusion 101 of the pulling member 10, the slider 11 is also provided with a reset member positioning hole 113 for fixing the reset member 12 . The two connection holes 111 can also be a through connection hole 111, or a long pull-out linkage 13 can be used to pass through multiple circuit breaker housings 4 and sliders in multiple circuit breaker housings 4 through the sliding holes, And it is linked with the driving convex rod 101. In addition, the driving protrusion 101 of the drawing member 10 can also be extended to pass through the sliders 11 of multiple plug-in circuit breakers at one time, but of course this is not convenient for assembly.

It should be noted that the above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or substitutions can be made, which should be deemed to belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" etc. are based on the The orientation or positional relationship, or the orientation or positional relationship that is usually placed during use, is only for the convenience of description, and does not indicate that the referred device or element must have a specific orientation, so it should not be construed as a limitation on the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating relative importance.

Claims (17)

1. A plug-in circuit breaker, comprising a circuit breaker housing (4) and a locking mechanism (2) arranged in the circuit breaker housing (4), the locking mechanism (2) comprising a locking member (20), locking The part (20) is provided with a locking protrusion (24) that can extend out of the circuit breaker housing (4) and retract into the circuit breaker housing (4), and is characterized in that it also includes a The pulling mechanism (1) of the pulling force is provided with a slider (11) in the circuit breaker housing (4), and a sliding hole is provided on at least one side wall of the circuit breaker housing (4). The pulling mechanism (1) includes a driving structure extending from the outside of the circuit breaker housing (4) through a sliding hole into the circuit breaker housing (4), the driving structure passes through the sliding hole and is connected with the slider (11), and the When the pulling mechanism (1) exerts a pulling force, the driving structure drives the slider (11) to slide and drive the locking piece (20) to move, so that the locking protrusion (24) retracts into the circuit breaker housing (4), so that the inserted unplug the circuit breaker. 2. The plug-in circuit breaker according to claim 1, characterized in that: the locking piece (20) is installed in the circuit breaker housing (4) for rotation or sliding, and the locking piece (20) is provided with The locking protrusion (24), the elastic member (23) drives the locking member (20) to move so that the locking protrusion (24) protrudes out of the circuit breaker housing (4), and the sliding block (11) slides to directly or indirectly drive the locking member ( 20) Move against the active force of the elastic member (23), so that the locking protrusion (24) retracts into the circuit breaker housing (4). 3. The plug-in circuit breaker according to claim 2, characterized in that: the slider (11) is provided with an inclined surface (112), and the inclined surface (112) is inclined relative to the sliding direction of the slider (11), and the sliding The block (11) drives the locking piece (20) to move through the inclined plane (112), so that the locking protrusion (24) is retracted into the circuit breaker housing (4). 4. The plug-in circuit breaker according to claim 1, characterized in that: the driving structure comprises a driving protruding rod (101), and the driving protruding rod (101) extends into the inside of the circuit breaker housing (4) from the sliding hole. 5. The plug-in circuit breaker according to claim 1, characterized in that: the pulling mechanism (1) includes a puller (10), and the puller (10) includes an operating rod (105) and two A connecting rod (103), one end of the two connecting rods (103) is connected with the operating rod (105) respectively, and the ends of the two connecting rods (103) are oppositely bent and provided with a driving protruding rod (101) as a driving structure . 6. The plug-in circuit breaker according to claim 1, characterized in that: the circuit breaker housing (4) includes an opposite operating surface and a rear end surface, an opposite upper side wall and a lower side wall, and an opposite The two side walls are provided with an operating piece (3) on the operating surface for driving the circuit breaker to open and close, and a locking hole is provided on the upper side wall and/or the lower side wall, and the locking protrusion (24) Protrude from the locking hole, and the sliding holes are provided on both side walls; the sliding holes are elongated, and their length direction is parallel to the direction in which the plug-in circuit breaker is inserted into the cabinet, and perpendicular to the operating surface on the plane. 7. The plug-in circuit breaker according to claim 6, characterized in that: the pulling mechanism (1) includes an operating structure, a driving structure and a connecting structure connected between the operating structure and the driving structure, the operating structure For applying a pulling force, at least one side wall of the circuit breaker housing (4) is also provided with a first receiving groove (133) for accommodating the connecting structure of the pulling mechanism (1), so that the connecting structure Not protruding from the side wall of the circuit breaker housing (4), the sliding hole is arranged in the first receiving groove (133). 8. The plug-in circuit breaker according to claim 7, characterized in that: the operating surface of the circuit breaker housing (4) is provided with a second receiving groove (135) for receiving at least part of the operating structure. 9. The plug-in circuit breaker according to claim 6, characterized in that: the pulling mechanism (1) includes an operating structure, a driving structure and a connecting structure connected between the operating structure and the driving structure, the operating structure Corresponding to the operating surface of the circuit breaker housing (4), the operating member (3) is a handle, which blocks the operating structure when the handle is turned to the closing position, and avoids the operating structure when turning to the opening position. 10. The plug-in circuit breaker according to claim 1, characterized in that: both sides of the slider (11) are provided with connecting holes (111) for connecting with the driving structure of the pulling mechanism (1), Or the connection hole (111) runs through the slider (11). 11. The plug-in circuit breaker according to claim 2, characterized in that: the middle part of the locking member (20) is rotatably installed in the circuit breaker housing (4), and the upper side of one end is provided with the locking protrusion (24), the other end of which protrudes and is provided with a driving arm, and the elastic piece (23) drives the locking piece (20) to rotate so that the locking projection (24) protrudes out of the circuit breaker housing (4), and the slider (11) Slide the drive arm to drive the lock (20) to rotate, so that the lock protrusion (24) retracts into the circuit breaker housing (4). 12. The plug-in circuit breaker according to claim 2, characterized in that: the locking member (20) is linearly slidably arranged in the circuit breaker housing (4), and the elastic member (23) drives the locking member (20) linearly Sliding makes the locking protrusion (24) extend out of the circuit breaker housing (4), the locking mechanism (2) also includes an unlocking lever (21), one end of the unlocking lever (21) is hinged with the locking piece (20), and the unlocking lever (21) The other end is located on the sliding route of the slider (11), and the slider (11) slides to drive the unlocking lever (21) to rotate and then drives the locking piece (20) to slide, so that the locking protrusion (24) retracts to the circuit breaker housing body (4). 13. The plug-in circuit breaker according to claim 12, characterized in that: the middle part of the unlocking lever (21) rotates with the unlocking protrusion (22) in the circuit breaker housing (4) as a fulcrum, or the unlocking The middle part of the lever (21) is rotatably mounted on the circuit breaker housing (4), or the middle part of the unlocking lever (21) is provided with a bent part (212) or a rotating protrusion for abutting against the circuit breaker housing (4) The inner wall serves as a fulcrum for the unlocking lever (21) to rotate. 14. The plug-in circuit breaker according to claim 1, characterized in that: the circuit breaker housing (4) is also provided with a reset member (12), and the reset member (12) acts on the slider (11) , used to drive the pulling mechanism (1) to reset. 15. The plug-in circuit breaker according to any one of claims 1-14, characterized in that it comprises a plurality of circuit breaker poles, each circuit breaker pole comprises a circuit breaker housing (4), and the circuit breaker housing (4 ) are provided with the sliding holes on the side walls on both sides, the circuit breaker housings (4) of multiple circuit breaker poles are arranged side by side and the sliding holes are correspondingly arranged, and the driving structure passes through the multiple circuit breaker housings (4) The sliding holes connect the sliders (11) in multiple circuit breaker housings (4) to synchronously drive the locking mechanisms (2) in multiple circuit breaker housings (4) Pull out the pole from the cabinet. 16. The plug-in circuit breaker according to claim 15, characterized in that: the driving structure comprises a driving protrusion (101) and a pull-out linkage (13), and the pull-out linkage (13) passes through at least adjacent The sliding holes on the adjacent side walls of the circuit breaker housing (4) connect the sliders (11) in the adjacent circuit breaker housings (4), and the driving protrusions (101) pass through at least two of the outermost The sliding hole on the outer side wall of the circuit breaker housing (4) is connected to the corresponding sliding block (11), and the pulling link (13) is linked with the driving convex rod (101). 17. The plug-in circuit breaker according to claim 16, characterized in that the driving structure comprises a pull-out linkage (13), and the pull-out linkage (13) penetrates multiple circuit breakers through sliding holes The casing (4) and the sliding blocks in the plurality of circuit breaker casings (4) are linked with the driving convex rod (101); Alternatively, the drive structure includes a plurality of pull-out linkages (13), each pull-out linkage (13) is arranged between two adjacent breaker housings (4), and passes through two adjacent The sliding holes of the adjacent side walls of a circuit breaker housing (4) connect the slide blocks (11) in the adjacent circuit breaker housings (4), and a plurality of pull-out linkages (13) and driving lugs ( 101) linkage by slide block (11).

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