CN220382025U - Closing holding mechanism for electric switch and electric switch - Google Patents

Abstract

A closing holding mechanism comprising: a driving member movable between an initial position and a driving position; a padlock member movable between an unlocked position and a locked position; the linkage assembly can move to a first closing position and a second closing position which keep the tripping element in a closing state and a separating position which allows the tripping element to trip; the linkage assembly can be respectively actuated by the driving piece and the padlock piece, and when the padlock piece is in the unlocking position, the linkage assembly can move between a first closing position and a separating brake position, so that when the electric switch is closed, the movement of the driving piece from the initial position to the driving position can actuate the linkage assembly from the first closing position to the separating brake position; when the padlock member moves from the unlocking position to the locking position, the linkage assembly is actuated by the padlock member to the second closing position such that movement of the driving member from the initial position to the driving position does not actuate the linkage assembly to the opening position. According to a second aspect, there is provided an electrical switch comprising the above-described closing holding mechanism.

Description

Closing holding mechanism for electric switch and electric switch

Technical Field

The present application relates to a closing holding mechanism for an electrical switch and an electrical switch comprising such a closing holding mechanism.

Background

In the prior art, an electrical switch generally does not have a mechanism for maintaining the switch in a closed state. However, some users need to maintain or detect the electrical switch in a closed state, and it is desirable to keep the electrical switch closed even if the breaking operation is performed erroneously.

Disclosure of Invention

The object of the present utility model is to solve the above-mentioned need and to provide a mechanism capable of maintaining an electrical switch in a closed state.

The closing holding mechanism for an electrical switch according to the present utility model includes: the driving piece can move between an initial position when the electric switch is closed and a driven position after being driven; a padlock member movable between an unlocked position allowing the electrical switch to be opened and a locked position not allowing the electrical switch to be opened; the linkage assembly is configured to abut against the tripping element of the electric switch and can move to a first closing position and a second closing position for keeping the tripping element in a closing state and a separating position for allowing the tripping element to move towards a tripping direction; the linkage assembly can be respectively actuated by the driving piece and the padlock piece, and when the padlock piece is in the unlocking position, the linkage assembly can move between a first closing position and a separating brake position, so that when the electric switch is closed, the movement of the driving piece from the initial position to the driving position can actuate the linkage assembly from the first closing position to the separating brake position; when the padlock member moves from the unlocking position to the locking position, the linkage assembly is actuated to the second closing position by the padlock member, so that the movement of the driving member from the initial position to the driving position cannot actuate the linkage assembly from the second closing position to the opening position, thereby keeping the electric switch closed.

According to a preferred embodiment of the present utility model, the linkage assembly of the closing holding mechanism includes: the limiting piece is configured to abut against the trip piece of the electric switch, the limiting piece can pivot around the limiting shaft, when the linkage assembly is in the first closing position or the second closing position, the limiting piece and/or the limiting shaft block the trip piece, so that the trip piece cannot move towards the trip direction, and when the linkage assembly is in the opening position, the limiting piece rotates to a position allowing the trip piece to move towards the trip direction; a first linkage member including a first aperture sleeved over the first pin such that the first linkage member is capable of translational and/or rotational movement about the first pin when actuated; when the linkage assembly is in the first closing position, the movement of the driving piece from the initial position to the driving position actuates the movement of the first linkage piece around the first pin, and the movement of the first linkage piece actuates the limiting piece to a position allowing the tripping piece to move towards the tripping direction; when the linkage assembly is in the second closing position, the first linkage member cannot be actuated by the movement of the driving member from the initial position to the driving position, and the limiting member cannot be actuated to a position allowing the tripping member to trip, so that the electric switch is kept closed.

According to a preferred embodiment of the utility model, the linkage assembly further comprises a second linkage member, the padlock member actuating the second linkage member when the padlock member is moved from the unlocked position to the locked position, the second linkage member actuating the first linkage member in a direction away from the driving member such that the linkage assembly is moved to the second closing position and the driving member is not able to actuate the linkage assembly to the opening position after being actuated to the driving position.

According to a preferred embodiment of the utility model, the padlock member is provided with a padlock hole and an actuating protrusion, the padlock member being pivotable about a padlock axis between an unlocked position and a locked position, wherein when the padlock member is in the unlocked position, the padlock hole is located inside the housing of the electrical switch, when the padlock member is pivoted about the padlock axis to the locked position, the padlock hole is located outside the housing of the electrical switch, and the actuating protrusion abuts the second linkage member and actuates the linkage assembly to the second closing position, at which time the lock may be passed through the padlock hole such that the padlock member cannot be pivoted back to the unlocked position, thereby keeping the electrical switch closed.

According to a preferred embodiment of the utility model, the second linkage comprises an actuating member pivotable about a first axis and a pushing member pivotable about a second axis, the first axis and the second axis being parallel to and spaced apart from each other, the actuating protrusion actuating the actuating member when the padlock is moved from the unlocked position to the locked position, the actuating member actuating the pushing member, the pushing member pushing the first linkage in a direction away from the driver such that movement of the driver from the initial position to the driven position fails to actuate the first linkage.

According to a preferred embodiment of the utility model, the padlock is further provided with a reset protrusion, which is coupled to a reset spring provided in the electrical switch, such that when the lock is removed from the padlock hole, the padlock is pivoted to the unlocked position under the influence of the reset spring.

According to a preferred embodiment of the utility model, the first linkage is coupled to a first return spring and the pushing member of the second linkage is coupled to a second return spring such that, when the padlock member is returned from the locked position to the unlocked position, the second return spring brings the pushing member and thus the actuating member back to the original position, the first linkage being moved back to the original position under the influence of the first return spring.

According to a preferred embodiment of the utility model, the closing holding mechanism further comprises an interlocking component, the interlocking component is connected to a main shaft of the electric switch, the rotation of the main shaft drives the electric switch to switch between a closing state and a separating state, the interlocking component can be driven by the main shaft to rotate along with the separating and closing of the electric switch, wherein an interlocking concave part is further arranged on the padlock member, when the electric switch is in the separating state, the interlocking component is matched with the interlocking concave part, so that the padlock member is blocked by the interlocking component and cannot move towards the locking position, and when the electric switch is in the closing state, the interlocking component rotates along with the main shaft to a position which does not interfere with the movement of the padlock member, so that the padlock member can move towards the locking position.

According to a preferred embodiment of the utility model, the interlock assembly comprises a cam which is sleeved on the main shaft of the electrical switch and which is rotatable with the main shaft, and a bar which is pivotally mounted to the cam such that when the electrical switch is in the off state, an end of the bar protrudes into the interlock recess, blocking movement of the padlock member towards the locking position, and when the electrical switch is switched to the on state, the end of the bar moves out of the interlock recess under the drive of rotation of the main shaft, enabling movement of the padlock member towards the locking position.

According to a second aspect of the present utility model there is also provided an electrical switch comprising a closing retaining mechanism as described above.

Drawings

The above and other features and advantages of exemplary embodiments of the present utility model will become more apparent from the following detailed description in conjunction with the accompanying drawings, which are provided for illustrative purposes only and do not limit the scope of the present utility model in any way, wherein:

fig. 1 illustrates a closing hold mechanism according to the present utility model with a padlock member in an unlocked position and a linkage assembly in a first closing position;

FIG. 2 illustrates a closing retaining mechanism according to the present utility model with a padlock member in an unlocked position and a driver actuating a linkage assembly to a release position allowing a trip member to trip;

fig. 3 illustrates a closing holding mechanism according to the present utility model with a padlock member in a locked position, and a linkage assembly actuated by the padlock member to a second closing position;

fig. 4 shows a state in which the padlock member of the closing holding mechanism according to the present utility model is pulled out of the electrical switch housing;

figures 5A and 5B show the structure of the padlock respectively from both sides;

FIG. 6 shows the position of the interlock assembly when the electrical switch is in the off state;

FIG. 7 illustrates a position of the interlock assembly when the electrical switch is in a first closed state;

fig. 8 shows the position of the interlock assembly when the electrical switch is in the second closed state.

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the specific embodiments of the present disclosure. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Possible implementations within the scope of the present disclosure may have fewer components, have other components not shown in the drawings, different components, differently arranged components, differently connected components, etc., than the examples shown in the drawings. Furthermore, two or more of the elements in the figures may be implemented in a single element or a single element shown in the figures may be implemented as multiple separate elements.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Where the number of components is not specified, the number of components may be one or more; likewise, the terms "a," "an," "the," and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "mounted," "configured," "connected," or "connected" and the like are not limited to physical or mechanical mounting, configuration, connection, but may include electrical mounting, configuration, connection, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships when the apparatus is in use or positional relationships shown in the drawings, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly.

Fig. 1 shows the closing holding mechanism according to the utility model with the electrical switch in a closed state, wherein the drive member 10 is in an initial position, the padlock member 20 is in an unlocked position, and the linkage assembly is in a first closed position not actuated by the padlock member 20. Specifically, the driver 10 is a button for opening the electrical switch, which is pivotable about the driver shaft 11 between an initial position and a driving position. The padlock member 20 is a member for holding the electrical switch in a closed state, which is pivotable about a padlock shaft between an unlocked position allowing the electrical switch to be opened and a locked position not allowing the electrical switch to be opened. The padlock member 20 is specifically structured as shown in fig. 5A and 5B, with a hole 21 through which the padlock shaft passes, an actuation protrusion 22, and a return protrusion 24 for coupling to a return spring in an electrical switch. It can be seen that the actuating projection 22 of the padlock member 20 for engagement with the linkage assembly is located on the rear face of the padlock member, and in the cross-section shown in fig. 1-3, only the features of the rear face of the padlock member 20 are shown for clarity in illustrating the engagement of the padlock member 20 with the linkage assembly.

The linkage assembly abuts the trip 30 of the electrical switch and includes a series of cooperating components: the linkage assembly is movable to a first closing position (fig. 1) and a second closing position (fig. 3) holding the trip member 30 in a closed state and a release position (fig. 2) allowing the trip member 30 to move in a trip direction, a second linkage member consisting of an actuating member 210 and a pushing member 220, and a stopper 300 abutting against the trip member 30. The first linkage 100 is provided with an oblong first hole 101, the first hole 101 being arranged over a fixed first pin 102 so as to be movable around the first pin 102 when the first linkage 100 is actuated. The first linkage member 100 is provided with a first fitting protrusion 103 on a side close to the driving member 10, and the protruding direction of the first fitting protrusion 103 is outward from the paper surface in fig. 1. The limit piece 300 against the trip piece 30 of the electrical switch can pivot around the limit shaft 310 together with the limit shaft 310. In fig. 1, the linkage assembly is in a first closing position, with the arcuate portion of the D-shaped limiting shaft 310 abutting the trip 30 such that it cannot rotate in a clockwise direction, thereby maintaining the electrical switch in a closed state.

In fig. 2, the driving member 10 is driven in a force in a left-to-right direction, rotates clockwise around the driving member shaft 11 to the driving position, and the driving protrusion 12 on the driving member 10 abuts against and pushes down the upper surface of the first fitting protrusion 103 of the first link 100, so that the first link 100 rotates counterclockwise around the first pin 102, and the lower surface of the first fitting protrusion 103 abuts against the third fitting protrusion 301 on the stopper 300, so that the stopper 300 rotates clockwise together with the stopper shaft 310. At this time, the arc-shaped portion of the D-shaped limiting shaft 310 no longer abuts against the trip piece 30, and the trip piece 30 pivots clockwise about the trip pivot shaft 31 under the action of an elastic member (not shown), so that the electrical switch is opened. The manner of blocking the trip of the trip member with the D-shaped shaft is merely exemplary, and other blocking manners, such as providing a notch on the stop member 300 itself, staggering the notch of the stop member 300 from the end of the trip member 30 when the linkage assembly is in the first or second closing position, and rotating the stop member 300 to a position allowing the trip member 30 to pivot clockwise into the notch when the linkage assembly is in the opening position, opening the electrical switch, are also contemplated by those skilled in the art.

The process of the linkage assembly being actuated by the driver 10 from the first closed position to the open position without actuation by the padlock member 20 when the padlock member 20 is in the unlocked position is described above in connection with fig. 1 and 2. The operation of the various components of the closing retaining mechanism when padlock member 20 is moved to the locked position and the linkage assembly is actuated to the second closing position will be described below in connection with fig. 3.

In fig. 3, padlock member 20 is pulled out of the electrical switch housing, i.e., from the unlocked position to the locked position. The portion of the padlock member 20 located outside the electrical switch housing is visible in fig. 4, wherein the lock may be passed through the padlock hole 23, maintaining the padlock member 20 in the locked position. In order that movement of the driver 10 from the initial position to the driven position when the padlock member 20 is in the locked position cannot result in opening of the electrical switch, the second linkage of the linkage assembly abutting the padlock member 20 transfers movement of the padlock member 20 to the first linkage 100. In particular, the second linkage comprises an actuation member 210 and a pushing member 220, the actuation member 210 being pivotable about a first axis 211, the pushing member 220 being pivotable about a second axis 221, the first axis 211 and the second axis 221 being parallel and spaced apart from each other. When padlock member 20 is pivoted counterclockwise from the unlocked position to the locked position, actuating protrusion 22 of padlock member 20 abuts the lower surface of second mating protrusion 212 of actuating member 210, pushing actuating member 210 in a clockwise direction, and the upper surface of second mating protrusion 212 abuts pushing member 220, such that pushing member 220 pushes first linkage 100 in a rightward direction in the drawing, i.e., in a direction away from driver 10, at which point the linkage assembly moves to the second closing position. In this way, even if the driving member 10 has moved to the driving position (fig. 3), the driving protrusion 12 still cannot contact the first linkage member 100, and thus the stopper 300 is not actuated by the first linkage member 100, and the trip member 30 is not allowed to move toward the trip direction.

When the user has completed detecting the electrical switch in the closed state, the lock may be removed from the padlock hole 23, and since the padlock member 20 has the reset protrusion 24 coupled to the reset spring 25, the padlock member 20 may return to the unlocked position under the influence of the reset spring 25 after losing the outwardly pulling force, and the linkage assembly may also return to the first closed position from the second closed position. Specifically, the push member 220 of the second linkage returns to the original position under the influence of the second return spring (not shown), the push actuating member 210 also returns to the original position, and the first linkage 100 translates leftward back to the original position under the influence of the first return spring 104 coupled thereto.

In summary, the closing holding mechanism according to the present utility model holds the electrical switch closed by holding padlock member 20 in the locked position. When padlock member 20 is in the unlocked position, it does not actuate the linkage assembly, so the linkage assembly in the first closed position can be actuated by driving member 10 to the open position, releasing trip member 30; when the padlock member 20 moves to the locked position, the padlock member 20 actuates the linkage assembly to the second closing position, such that the driver 10 cannot contact the first linkage member 100 of the linkage assembly, and thus cannot actuate the linkage assembly to the opening position.

Preferably, the closing holding mechanism according to the present utility model further includes an interlock assembly for preventing the padlock member 20 from being pulled out of the housing by mistake in a state in which the electrical switch is opened. The interlock assembly includes, for example, a cam 410 and a bar 420 pivotally mounted to the cam 410 by a pin 411. The cam 410 is configured to be sleeved on the main shaft 40 of the electric switch, and when the main shaft 40 is driven to rotate to drive the electric switch to switch between a closing state and a separating state, the cam 410 rotates along with the main shaft, so that the stop lever 420 also moves along with the main shaft. The electric switch to which the closing holding mechanism according to the present utility model is applied is, for example, a double power switch, and thus the main shaft 40 can be rotated to a position where the electric switch is opened (fig. 6), a position where the first power of the electric switch is turned on (fig. 7), and a position where the second power of the electric switch is turned on (fig. 8). In fig. 6, the end of the bar 420 of the interlock assembly protrudes into the interlock recess 26 of the padlock member 20 such that movement of the padlock member 20 towards the locked position is blocked. When the electrical switch is in the closed state of fig. 7 or 8, the padlock member 20 is able to move towards the locked position as the end of the bar 420 moves out of the interlock recess 26 as the spindle 40 moves the interlock assembly. Particularly preferably, the bar 420 may be provided with an oblong hole extending along a length direction thereof, which is sleeved on the positioning pin 421 for guiding movement of the bar 420 between three positions corresponding to three different states of the electrical switch. Note that the interlocking recess 26 is provided on the front surface of the padlock member 20 as shown in fig. 5A, and the actuation protrusion 22 is at a different position in the thickness direction of the padlock member 20 as shown in fig. 5B, in other words, the actuation protrusion 22 protrudes rearward from the plate-like body of the padlock member 20 forming the interlocking recess 26.

Although the utility model has been described in the specification and illustrated in the accompanying drawings on the basis of various embodiments, it will be understood by those skilled in the art that the above embodiments are merely preferred implementations, and that certain technical features in the embodiments may not be necessary to solve a particular technical problem so that these technical features may be omitted or omitted without affecting the solution of the technical problem or the formation of the technical solution; furthermore, the features, elements, and/or functions of one embodiment may be combined, or otherwise matched as appropriate with the features, elements, and/or functions of other one or more embodiments, unless such combination, or match is clearly impractical.

Claims (10)

1. A closing holding mechanism for an electrical switch, the closing holding mechanism comprising:

the driving piece can move between an initial position when the electric switch is closed and a driven position after being driven;

a padlock member movable between an unlocked position allowing the electrical switch to be opened and a locked position not allowing the electrical switch to be opened;

the linkage assembly is configured to abut against the tripping element of the electric switch and can move to a first closing position and a second closing position for keeping the tripping element in a closing state and a separating position for allowing the tripping element to move towards a tripping direction;

the linkage assembly can be respectively actuated by the driving piece and the padlock piece, and can move between a first closing position and a separating position when the padlock piece is in an unlocking position, so that when the electric switch is closed, the movement of the driving piece from the initial position to the driving position can actuate the linkage assembly from the first closing position to the separating position;

when the padlock member moves from the unlocking position to the locking position, the linkage assembly is actuated to the second closing position by the padlock member, so that the movement of the driving member from the initial position to the driving position cannot actuate the linkage assembly from the second closing position to the opening position, thereby keeping the electric switch closed.

2. The closing holding mechanism of claim 1, wherein the linkage assembly comprises:

the limiting piece is configured to abut against a tripping piece of the electric switch, the limiting piece can pivot around a limiting shaft, when the linkage assembly is in a first closing position or a second closing position, the limiting piece and/or the limiting shaft block the tripping piece so that the tripping piece cannot move towards a tripping direction, and when the linkage assembly is in a separating position, the limiting piece rotates to a position allowing the tripping piece to move towards the tripping direction;

a first linkage comprising a first bore sleeved over a first pin such that the first linkage is capable of translational and/or rotational movement about the first pin when actuated;

wherein movement of the drive member from an initial position to a drive position actuates movement of the first link member about the first pin when the link assembly is in a first closing position, the movement of the first link member actuating the limit member to a position that allows movement of the trip member in a trip direction;

when the linkage assembly is in the second closing position, the movement of the driving piece from the initial position to the driving position cannot actuate the first linkage piece to move, and the limiting piece cannot be actuated to a position allowing the tripping piece to trip, so that the electric switch is kept closed.

3. The closing retaining mechanism of claim 2, wherein the linkage assembly further comprises a second linkage member that actuates the second linkage member when the padlock member moves from the unlocked position to the locked position, the second linkage member actuating the first linkage member in a direction away from the driver such that the linkage assembly moves to a second closing position and the driver is unable to actuate the linkage assembly to the open position after being actuated to the driven position.

4. A closing holding mechanism according to claim 3, wherein the padlock member is provided with a padlock hole and an actuating protrusion, the padlock member being pivotable about a padlock axis between an unlocked position and a locked position, wherein when the padlock member is in the unlocked position, the padlock hole is located inside a housing of the electrical switch, and when the padlock member is pivoted about the padlock axis to the locked position, the padlock hole is located outside the housing of the electrical switch, and the actuating protrusion abuts the second linkage member and actuates the linkage assembly to the second closing position, at which time a lock can be passed through the padlock hole such that the padlock member cannot be pivoted back to the unlocked position, thereby holding the electrical switch closed.

5. The switch-on retaining mechanism of claim 4, wherein the second linkage includes an actuating member pivotable about a first axis and a pushing member pivotable about a second axis, the first and second axes being parallel to and spaced apart from each other, the actuating protrusion actuating the actuating member when the padlock moves from the unlocked position to the locked position, the actuating member actuating the pushing member, the pushing member pushing the first linkage to move in a direction away from the driver such that movement of the driver from the initial position to the driven position fails to actuate movement of the first linkage.

6. The closing holding mechanism of claim 5, wherein a reset protrusion is further provided on the padlock member, the reset protrusion being coupled to a reset spring provided in the electrical switch such that when the lock is removed from the padlock hole, the padlock member pivots to an unlocked position under the influence of the reset spring.

7. The closing holding mechanism of claim 5, wherein the first linkage is coupled to a first return spring and the pushing member of the second linkage is coupled to a second return spring such that when the padlock member returns from the locked position to the unlocked position, the second return spring moves the pushing member and thus the actuating member back to the original position, the first linkage moving back to the original position under the influence of the first return spring.

8. The switch-on holding mechanism according to claim 1, further comprising an interlock assembly coupled to a main shaft of the electric switch, rotation of the main shaft driving the electric switch between a switch-on state and a switch-off state, the interlock assembly being rotatable by the main shaft with switching-off and switching-on of the electric switch, wherein the padlock member is further provided with an interlock recess, the interlock assembly being engaged with the interlock recess when the electric switch is in the switch-off state such that the padlock member is blocked from movement toward the lock position by the interlock assembly, and when the electric switch is in the switch-on state, the interlock assembly being rotatable with the main shaft to a position not interfering with movement of the padlock member such that the padlock member is movable toward the lock position.

9. The switch-on retaining mechanism of claim 8, wherein the interlock assembly includes a cam that is sleeved on and rotatable with a main shaft of the electrical switch, and a bar pivotally mounted to the cam such that when the electrical switch is in the off state, an end of the bar extends into the interlock recess to block movement of the padlock toward the locked position, and when the electrical switch is switched to the on state, the end of the bar moves out of the interlock recess under rotation of the main shaft such that the padlock can move toward the locked position.

10. An electrical switch comprising a closing retaining mechanism according to any one of claims 1-9.