CN214254239U

CN214254239U - Electromagnetic locking device and switch cabinet

Info

Publication number: CN214254239U
Application number: CN202023254493.1U
Authority: CN
Inventors: 朱永文; 鸦玲
Original assignee: Schneider Electric Industries SAS
Current assignee: Schneider Electric Industries SAS
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-21
Anticipated expiration: 2030-12-29

Abstract

The utility model relates to an electromagnetism blocking device and cubical switchboard. The electromagnetic latching device includes: an electromagnetic lock; a support; the first driving piece is connected to the electromagnetic lock; a second driving member having a first end connected to the first driving member and a second end connected to the bracket, wherein the first locking direction and the second locking direction are perpendicular to each other, wherein when the electromagnetic lock is energized, the first driving member moves from the first unlocking position to the first locking position along the first locking direction to lock the ground switch; the second driving piece moves from a second unlocking position to a second locking position along a second locking direction to lock the cable chamber door, and when the electromagnetic lock is powered off, the first driving piece moves from a first locking position to a first unlocking position along a first unlocking direction to unlock the grounding switch; the second driver moves in a second unlocking direction from a second latched position to a second unlatched position to unlock the cable compartment door.

Description

Electromagnetic locking device and switch cabinet

Technical Field

The utility model relates to an electromagnetism blocking device to and a cubical switchboard that contains this electromagnetism blocking device.

Background

A cable chamber is arranged in a switch cabinet of the electrical equipment, and a grounding switch is arranged in the cable chamber. The cable chamber often needs to be overhauled and maintained, and in order to guarantee the safety of workers during overhauling and maintenance, a reliable locking is required to be formed between the cable chamber door and the grounding switch. Specifically, when the grounding switch is in the open state, the cable chamber door should be prohibited from opening; only when the grounding switch is in a closing state, the cable chamber door can be opened.

In some existing switch cabinets, when a main loop of the switch cabinet is electrified, a grounding switch can be locked, and at the moment, the grounding switch cannot be switched on; when the main circuit of the switch cabinet is powered off, the grounding switch can be unlocked, and the grounding switch can be switched on at the moment. In other switchgears, the cable compartment door can be closed when the main circuit of the switchgear is live, but the earthing switch cannot be closed. Therefore, the current switchgear cabinets do not achieve simultaneous latching and simultaneous unlatching between the cable compartment door and the earthing switch.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electromagnetism blocking device to and a cubical switchboard that contains this electromagnetism blocking device. The electromagnetic locking device adopts a modular design, has a simple and compact structure and high flexibility, and can reliably realize simultaneous locking and simultaneous unlocking of a cable chamber door and a grounding switch of the switch cabinet.

The utility model relates to an electromagnetism blocking device for cable chamber door and earthing switch's of cubical switchboard block and unblock simultaneously. The electromagnetic latching device includes: the electromagnetic lock is arranged on the cabinet body of the switch cabinet and is close to the cable chamber door interlocking device; the bracket is arranged between the electromagnetic lock and the cabinet body; the first driving piece is arranged between the electromagnetic lock and the cabinet body, is connected to the electromagnetic lock, and can move along a first locking direction and a first unlocking direction which are opposite to each other under the action of the electromagnetic lock; the first driving piece is arranged between the first driving piece and the cabinet body, the first end of the second driving piece is connected to the first driving piece, the second end of the second driving piece is connected to the bracket, the second driving piece can move along a second locking direction and a second unlocking direction which are opposite to each other under the driving of the first driving piece and the constraint of the bracket, the first locking direction and the second locking direction are perpendicular to each other, and when the electromagnetic lock is powered on, the first driving piece moves from the first unlocking position to the first locking position along the first locking direction to lock the grounding switch; the second driver moves from a second unlocked position to a second locked position in a second locking direction to lock the cable compartment door, and wherein when the electromagnetic lock is de-energized, the first driver moves from a first locked position to a first unlocked position in a first unlocking direction to unlock the grounding switch; the second driver moves in a second unlocking direction from a second latched position to a second unlatched position to unlock the cable chamber door.

In one embodiment, the first driver is provided with a driving groove inclined with respect to the first latching direction, and the second driver is provided with a driving protrusion at a first end thereof, the driving protrusion being inserted into the driving groove.

In one embodiment, the first end of the second driver is further provided with a locking protrusion extending towards the cable compartment door interlock for insertion into the path of movement of the cable compartment door interlock when the second driver is in the second latched position.

In one embodiment, the bracket is provided with a first guide slot, and the second end of the second driving member is located in the first guide slot and can move in the first guide slot.

In one embodiment, the bracket is further provided with a second guide groove, the second driving member is provided with a guide portion far away from the second end portion, and the guide portion is located in the second guide groove and can move in the second guide groove.

In one embodiment, the bracket is further provided with a stopper portion that contacts the guide portion and holds the guide portion in the second guide groove.

In one embodiment, the guide is two projections projecting from either side of the second driver.

In one embodiment, the second drive member comprises a first portion and a second portion connected to each other, wherein the end of the first portion remote from the bracket is the first end, and wherein the second portion has a main body and an extension perpendicular to the main body and has a T-shape, the main body being the guide portion, the end of the extension near the bracket being the second end.

In one embodiment, the bracket is provided with a third guide groove, the third end of the first driving element is located in the third guide groove and can move in the third guide groove, and the fourth end of the first driving element is provided with a baffle plate, wherein when the first driving element is located at the first locking position, the baffle plate shields the operation hole of the earthing switch.

The utility model discloses still relate to a cubical switchboard, this cubical switchboard includes as above the electromagnetism blocking device.

Drawings

The advantages and objects of the present invention will be better understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the relationship of the various components. In the drawings:

fig. 1 shows a schematic view of an electromagnetic blocking device of a switchgear cabinet according to an embodiment of the present invention;

fig. 2 shows an exploded schematic view of an electromagnetic latching device according to an embodiment of the invention;

fig. 3 shows a schematic view of a second driving member of the electromagnetic latching device according to an embodiment of the present invention; and

fig. 4 shows a partial schematic view of a switchgear cabinet according to an embodiment of the present invention.

Detailed Description

Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are given to constituent parts having substantially the same or similar structures and functions, and repeated description thereof will be omitted. The terms "upper", "lower", "left", "right", and the like herein, if not specifically stated, are described with respect to the drawings of the present invention. The description of "first" and its variants is merely for the purpose of distinguishing between the parts and does not limit the scope of the invention, which can be written as "second" and so on without departing from the scope of the invention.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof.

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 and 2 show an assembly schematic view and an exploded schematic view of an electromagnetic locking device 100 of a switch cabinet according to an embodiment of the present invention, fig. 3 shows a schematic view of a component of the electromagnetic locking device 100, and fig. 4 shows a schematic view of the electromagnetic locking device 100 mounted on a cabinet body of the switch cabinet, wherein the electromagnetic locking device is in an unlocked state.

The electromagnetic locking device 100 is used for simultaneous locking and simultaneous unlocking of a cable chamber door of a switchgear cabinet and a grounding switch. As shown in fig. 1, the electromagnetic locking device 100 includes an electromagnetic lock 1, a bracket 2, a first driving member 3, and a second driving member 4.

As shown in fig. 4, the electromagnetic lock 1 is disposed on the cabinet body of the switch cabinet and is close to the cable chamber door interlocking device 5, which is connected to the cable chamber door, and can realize the closing and opening of the cable chamber door. As shown in fig. 1, the bracket 2 is disposed between the electromagnetic lock 1 and the cabinet body of the switch cabinet. The first driving piece 3 is arranged between the electromagnetic lock 1 and the cabinet body of the switch cabinet, is connected to the electromagnetic lock 1, and can move along a first locking direction and a first unlocking direction opposite to each other under the action of the electromagnetic lock 1. In fig. 1, for example, the first latching direction is a vertically downward direction, and the first unlatching direction is a vertically upward direction. The second driving member 4 is disposed between the first driving member 3 and the cabinet body of the switch cabinet. As shown in fig. 1 to 3, the first end 41 of the second driver 4 is connected to the first driver 3, and the second end 42 is connected to the bracket 2, and is movable in a second locking direction and a second unlocking direction opposite to each other under the driving of the first driver 3 and the constraint of the bracket 2. The first latching direction and the second latching direction are perpendicular to each other. In fig. 1, for example, the second locking direction is a substantially horizontal right direction, and the second unlocking direction is a substantially horizontal left direction. When the electromagnetic lock 1 is electrified, the electromagnetic lock drives the first driving piece 3 connected with the electromagnetic lock to move from a first unlocking position to a first locking position along a first locking direction so as to lock the grounding switch; the second driver 4 moves in a second latching direction from a second unlatched position to a second latched position to latch a cable chamber door (not shown in the figures). When the electromagnetic lock 1 is powered off, the first driving member 3 moves from the first locking position to the first unlocking position in the first unlocking direction under the action of an elastic member (for example, a return spring) inside the electromagnetic lock, so as to unlock the grounding switch; the second driver 4 is moved in a second unlocking direction from the second latched position to the second unlatched position to unlock the cable compartment door.

As defined herein, "blocking the earthing switch" means that the earthing switch cannot be closed by the first driving member 3, including but not limited to blocking the operation hole 6 of the earthing switch; the 'unlocking grounding switch' means that the grounding switch can be switched on under the action of the first driving piece 3; "closing the cable compartment door" means that the cable compartment door cannot be opened by the second drive element 4; by "unlocking the cable compartment door" is meant that the cable compartment door can be opened under the influence of the second driver 4. In addition, when the main loop of the switch cabinet is electrified, the electromagnetic lock 1 is electrified; when the main loop of the switch cabinet is powered off, the electromagnetic lock 1 is powered off.

As shown in fig. 2, the second driver 4 comprises a first end 41 and a second end 42, and the first driver 3 comprises a third end 31 and a fourth end 32. The first driver 3 is provided with a drive groove 33 which is inclined with respect to the first latching direction. As shown in fig. 2 and 3, the first end portion 41 of the second driver 4 is provided with a driving protrusion 43, and the driving protrusion 43 is inserted into the driving groove 33. In this way, the first driving member 3 can drive the second driving member 4 to move when moving, and because the slope setting in driving groove, the driving force that the electromagnetic lock provided can reduce, has guaranteed that the electromagnetic lock can all carry out effective drive under electrified actuation or the two kinds of states that lose the power and reset. In addition, a locking projection 44 is also provided on the first end 41 of the second driver 4, said locking projection 44 extending towards the cable compartment door interlock 5, as shown in fig. 4. When the second driver 4 is located at the second locking position, the locking protrusion 44 is inserted into a moving path of the cable chamber door interlocking device 5 to block the movement of the cable chamber door interlocking device 5, so that the cable chamber door can be locked. As shown in fig. 3, the driving protrusion 43 and the locking protrusion 44 are respectively provided on two opposite sides of the plate-shaped second driving member 4 and extend in opposite directions to each other. For example, the driving projection 43 and the locking projection 44 may have the form of pins, fixed to the second driver 4, for example by welding. In other examples, the drive and

locking projections

43, 44 may be integrally formed with the second driver 4.

In order to guide and restrict the movement of the second driving member 4, the bracket 2 is provided with a first guide groove 21, as shown in fig. 2. After the assembly is completed, the second end 42 of the second driver 4 is located in the first guide slot 21 and is movable in the first guide slot 21. Under the guiding constraint of the first guide groove 21 and the driving of the driving groove 33, the second driving member 4 can move in a second locking direction and a second unlocking direction opposite to each other. In order to further guide and restrict the movement of the second driving member 4 for smooth movement, a second guide groove 22 is further provided on the bracket 2, as shown in fig. 2. The second drive element 4 is provided with a guide 45 remote from the second end 42, the guide 45 being located in the second guide slot 22 and being movable in the second guide slot 22. For example, the guide portions 45 are two protrusions protruding from both sides (e.g., upper and lower sides in fig. 3) of the second driver 4. For example, the size of the second guide groove is larger than the size of the first guide groove. The guide portion 45 is sufficiently distant from the second end portion 42 to enable a smooth movement of the second driving member 4. By adopting the guiding mode, the loss of effective stroke caused by position deviation when the end part of the part is driven can be greatly reduced, and meanwhile, the friction force of a kinematic pair is also reduced, so that the movement is reliable and smooth.

The holder 2 is further provided with a stopper portion 24, and the stopper portion 24 contacts the guide portion 45 and holds the guide portion 45 in the second guide groove 22.

For guiding and restraining the first driver 3, the bracket 2 is provided with a third guide groove 23, as shown in fig. 1 and 2. The third end 31 of the first driver 3 is located in the third guide groove 23 and is movable in said third guide groove 23. Furthermore, a stop 34 is provided on the fourth end 32 of the first driver 3. When the first driving member 3 is located at the first locking position, the shutter 34 blocks the operation hole 6 of the earthing switch.

In some examples, as shown in fig. 3, the second driver 4 includes a first portion 46 and a second portion 47 connected to each other, such as by welding or the like, or integrally formed, without limitation. The first portion 46 is, for example, a plate-like structure, and its end (the end on the left side in fig. 3) remote from the bracket 2 is the first end 41. The second portion 47 has a main body and an extension perpendicular to the main body, and thus has a T-shape. For example, the second portion 47 is also of plate-like construction. The body forms a guide 45 and the end of the extension near the bracket 2 is the second end 42 of the second driver 3. For example, the bracket 2 is also of a plate-like structure, and the first guide groove 21, the second guide groove 22, and the third guide groove 23 are all openings in the bracket 2. For example, as shown in fig. 1 and 2, the stopper portion 24 is a bent portion on the holder 2 that prevents the guide portion 45 from leaving the second guide groove 22 in a direction perpendicular to the holder 2 when the guide portion 45 is located in the second guide groove 22.

For example, the bracket 2, the first drive member 3, and the second drive member 4 are all single-piece components formed by laser cutting. For example, the stopper portion 24 is formed by sheet metal bending. Therefore, the integral design of the structure has low requirement on machining precision and low cost.

Through the structure, the utility model discloses an electromagnetism blocking device has the modularized design, therefore simple structure is compact, and the flexibility is high, and can realize blocking and unblock simultaneously in the cable chamber door of cubical switchboard and earthing switch reliably.

The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the present invention to achieve the purpose of the present invention.

Claims

1. An electromagnetic latching device for simultaneous latching and simultaneous unlatching of a cable compartment door of a switchgear cabinet with an earthing switch, characterized in that the electromagnetic latching device (100) comprises:

the electromagnetic lock (1) is arranged on the cabinet body of the switch cabinet and is close to the cable chamber door interlocking device (5);

the bracket (2) is arranged between the electromagnetic lock and the cabinet body;

the first driving piece (3) is arranged between the electromagnetic lock and the cabinet body, is connected to the electromagnetic lock, and can move along a first locking direction and a first unlocking direction which are opposite to each other under the action of the electromagnetic lock;

a second driving member (4) arranged between the first driving member and the cabinet body, having a first end (41) connected to the first driving member (3) and a second end (42) connected to the bracket (2), and being movable in a second locking direction and a second unlocking direction opposite to each other under the driving of the first driving member (3) and the constraint of the bracket (2);

wherein the first latching direction and the second latching direction are perpendicular to each other,

when the electromagnetic lock is electrified, the first driving piece (3) moves from a first unlocking position to a first locking position along a first locking direction to lock the grounding switch; the second drive element (4) is moved in a second locking direction from a second unlocked position into a second locked position in order to lock the cable compartment door, and

when the electromagnetic lock is powered off, the first driving piece (3) moves from a first locking position to a first unlocking position along a first unlocking direction to unlock the grounding switch; the second drive (4) is moved in a second unlocking direction from a second locked position to a second unlocked position in order to unlock the cable compartment door.

2. Electromagnetic latching device according to claim 1, characterized in that the first drive element (3) is provided with a drive groove (33) which is inclined with respect to the first latching direction, and the first end (41) of the second drive element (4) is provided with a drive projection (43) which is inserted into the drive groove.

3. Electromagnetic latching device according to claim 2, characterized in that a latching projection (44) is further provided on the first end (41) of the second drive member (4), which latching projection extends towards the cable compartment door interlocking device for insertion into the path of movement of the cable compartment door interlocking device when the second drive member (4) is in the second latching position.

4. Electromagnetic latching device according to claim 1, characterized in that a first guide groove (21) is provided on the carrier (2), in which first guide groove (21) the second end (42) of the second drive element (4) is located and can be moved in the first guide groove (21).

5. Electromagnetic latching device according to claim 4, characterized in that a second guide groove (22) is provided on the carrier (2), and a guide (45) is provided on the second drive element (4) remote from the second end (42), the guide (45) being located in the second guide groove (22) and being movable in the second guide groove (22).

6. An electromagnetic latching device according to claim 5, characterized in that a stop portion (24) is further provided on the carrier (2), the stop portion (24) being in contact with the guide portion (45) and retaining the guide portion in the second guide groove.

7. An electromagnetic latching device according to claim 5, characterized in that the guide (45) is two protrusions protruding from both sides of the second driver (4).

8. Electromagnetic latching device according to claim 5, characterized in that the second driver (4) comprises a first part (46) and a second part (47) connected to each other, wherein the end of the first part (46) remote from the bracket is the first end (41), and wherein the second part (47) has a body and an extension perpendicular to the body and has a T-shape, the body being the guide (45) and the end of the extension close to the bracket being the second end (42).

9. Electromagnetic latching device according to claim 1, characterized in that a third guide groove (23) is provided on the carrier (2), in that a third end (31) of the first actuating element (3) is located in the third guide groove (23) and is movable in the third guide groove (23), and in that a blocking plate (34) is provided on a fourth end (32) of the first actuating element (3), wherein the blocking plate (34) blocks the operating opening (6) of the earthing switch when the first actuating element (3) is in the first latching position.

10. A switchgear cabinet, characterized in that it comprises an electromagnetic blocking device according to any one of claims 1 to 9.