CN218676850U - Padlock structure for dual-power automatic transfer switch and dual-power automatic transfer switch - Google Patents

Abstract

A padlock structure for a dual-power automatic transfer switch and a dual-power automatic transfer switch are provided. The padlock mechanism includes: an indicating member pivotably disposed inside the housing, the indicating member being associated with a drive mechanism of the dual power automatic transfer switch and having a first power position, a double position, and a second power position indicating that the dual power automatic transfer switch is in a first power-on state, a double state, and a second power-on state, respectively; a permission member extending from the mode selector; a lock member pivotably mounted to the drive mechanism and pivotable between an initial position in which a padlock portion of the lock member is located within the housing and a padlock position in which the padlock portion of the lock member is accessible via an opening provided in the housing, the permissive member and the indicating member being interlocked only when the indicating member is in the double-split position, the lock member being pivotable from the initial position to the padlock position.

Description

Padlock structure for dual-power automatic transfer switch and dual-power automatic transfer switch

Technical Field

The utility model relates to a padlock structure and corresponding dual supply automatic transfer switch for dual supply automatic transfer switch.

Background

The dual power automatic transfer switch has an automatic mode and a manual mode of operation. When the dual-power automatic transfer switch is in an automatic mode, the transfer operation of the dual-power automatic transfer switch is automatically executed by a controller or a remote controller of the dual-power automatic transfer switch. When the dual-power automatic transfer switch is in a manual operation mode, the automatic operation control circuit is cut off, and a worker operates the dual-power automatic transfer switch through the operation handle.

The dual-power automatic transfer switch is also provided with a padlock mode. The padlock function is typically set for equipment servicing at the load end. That is, the dual power automatic transfer switch can be attached with a padlock if and only if the dual power automatic transfer switch is in a double-split (i.e., OFF state, the load side is not connected to any power source) isolation position, and all the transfer operations are invalid before the padlock is removed, thereby ensuring that the load side and the power side of the dual power automatic transfer switch are always in an electrical isolation state, and ensuring the personal safety of maintenance personnel.

Therefore, in order to realize a safe padlock, the state of the switch is first linked, and for safety reasons, a padlock is generally required to be in a double-split position.

Therefore, an indicating device capable of correctly indicating the position of the contact and a simpler and more reliable indicating padlock mechanism of the dual-power automatic transfer switch, which can ensure the personal safety of maintenance personnel, are needed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies, it is an object of the present invention to at least solve the above-mentioned problems of the prior art.

The utility model provides a padlock structure for a dual-power automatic transfer switch, which comprises a shell and a mode selection piece, wherein the mode selection piece is arranged on the shell and can move among at least a first position, a second position and a third position to select the operation mode of the dual-power automatic transfer switch, the first position corresponds to the automatic mode of the dual-power automatic transfer switch, the second position corresponds to the manual operation mode of the dual-power automatic transfer switch, and the third position corresponds to the padlock mode of the dual-power automatic transfer switch,

the padlock mechanism includes: an indicating member pivotably disposed inside the housing, the indicating member being associated with a drive mechanism of the dual power automatic transfer switch and having a first power position, a double position, and a second power position indicating that the dual power automatic transfer switch is in a first power-on state, a double state, and a second power-on state, respectively; a permission member extending from the mode selector; a lock member pivotably mounted to a drive mechanism of the dual power automatic transfer switch, pivotable between an initial position in which a padlock portion of the lock member is located within the housing and a padlock position in which the padlock portion of the lock member is exposed via an opening provided on the housing when the mode selector is in the third position,

wherein the permissive member is capable of interlocking with the indicating member only when the indicating member is in the double-split position, such that the locking member is capable of pivoting from the initial position to the padlock position for padlock operation.

Advantageously, the indication member has a first engagement portion and the permission member has a second engagement portion, the first and second engagement portions being engaged with each other to lock each other when the permission member moves to the third position with the mode selector in the double-split position of the indication member.

Advantageously, the first mating portion is a groove and the second mating portion is a protrusion.

Advantageously, the padlock structure further comprises a blocking member mounted in the outer cover of the drive mechanism and fixed to the locking member, the blocking member being movable between a release position, in which it is not located in the path of movement of the moving core of the electromagnet of the drive mechanism, and a blocking position, in which a portion of the blocking member is located in the path of movement of the moving core of the electromagnet of the drive mechanism, blocking the movement of the moving core of the electromagnet, when the locking member is pivoted between the initial position and the padlock position.

Advantageously, the blocking member has a first guide, the outer cover of the drive mechanism being provided with a second guide, the first and second guides cooperating with each other in such a way that the blocking member is translated between the release position and the blocking position.

Advantageously, the first guide is a groove and the second guide is a protrusion.

Advantageously, the padlock portion of the locking member has a padlock aperture for receiving a padlock in a padlock position for operation of the padlock.

Advantageously, the dual power automatic transfer switch further comprises a sensor disposed within the housing, the sensor being switchable between an activated state in which the sensor is capable of signaling the controller to control the operation of the electromagnet of the drive mechanism in an automatic mode and a deactivated state in which the sensor is incapable of signaling the controller to control the operation of the electromagnet in a mode such that the controller does not control the operation of the electromagnet,

in a first position of the mode selector the permissive member abuts the sensor, causing the sensor to be in an activated state, thereby providing a signal to the controller for an automatic mode,

in the second position and the third position of the mode selector, the permitting member is disengaged from the sensor, and the sensor is switched to the deactivated state.

Advantageously, the sensor is a microswitch.

Advantageously, the drive mechanism of the dual power automatic transfer switch has a link pivotably mounted to an outer cover of the drive mechanism and operatively connected to the indicating member, the link being capable of pivoting driven by electromagnetic force or manually operating force in the automatic mode and the manual operating mode, thereby driving the indicating member to pivot between the first power position, the double split position and the second power position,

the indicating member includes a central axis and first and second driven portions disposed symmetrically about the central axis, the link has first and second driving portions,

at the double-division position of the indicating member, the first driving part is abutted with the first driven part, and the second driving part is abutted with the second driven part; when the connecting rod is driven to pivot, the first driving part drives the first driven part to enable the indicating member to pivot along the first direction, and the indicating member pivots from the double-division position to the first power-on position; when the link is driven to pivot, the second driving portion drives the second driven portion to pivot the indicating member in a second direction opposite to the first direction, and the indicating member pivots from the double-split position to the second power position.

The utility model also provides a dual supply automatic transfer switch, it includes as above the padlock structure.

Drawings

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

fig. 1 shows an appearance diagram of a dual power automatic transfer switch according to the present invention in an automatic mode.

Fig. 2 shows a perspective view of the mode selector and the permissive member in the automatic mode of fig. 1.

Fig. 3 shows an appearance diagram of the dual power automatic transfer switch according to the present invention in the manual mode.

Fig. 4 shows a perspective view of the mode selector and the permissive member in the manual mode of fig. 2.

Fig. 5 shows an external view of the dual power automatic transfer switch according to the present invention in the padlock mode.

Figure 6 shows a perspective view of the mode selector, the permission member and the indication member in the padlock mode of figure 5.

Fig. 7 shows an external view of the locking member in an initial position in the padlock mode of fig. 5.

Fig. 8 shows an external view of the locking member in the padlock mode of fig. 5 in the padlock position.

Fig. 9 shows a plan view of the locking member mounted on the outer cover of the drive mechanism, showing the indicator member in the double-split position.

Fig. 10 shows a plan view of the indicating member moved to the first power position.

Fig. 11 shows a plan view of the indicating member moved to the second power position.

Fig. 12 shows a perspective view of the locking member mounted on the outer cover of the drive mechanism.

Fig. 13 shows a perspective view of the blocking member of the padlock structure mounted within the outer cover of the drive mechanism, the outer cover being removed for clarity.

Figure 14 shows a perspective view of the blocking member in the blocking position with the locking member in the padlock position.

Detailed Description

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

The foregoing and other features, aspects and utilities of the present disclosure will be apparent from the following detailed description of the embodiments when read in conjunction with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of description and is not intended to be limiting, and moreover, like reference numerals will be used to refer to like elements throughout.

Fig. 1 and 2 show that dual power automatic transfer switch according to the present invention is in automatic mode. The dual power automatic transfer switch is shown schematically and partially at reference numeral 1. The dual-power automatic transfer switch comprises a shell 2 and a mode selection piece 3, wherein the mode selection piece 3 is arranged on the shell 2. The mode selector 3 is movable among a first position, a second position, and a third position to select an automatic mode, a manual operation mode, and a padlock mode of the dual power automatic transfer switch 1.

As an example, the first position corresponds to the automatic mode of the automatic transfer switch 1, the second position corresponds to the manual operation mode of the automatic transfer switch 1, and the third position corresponds to the padlock mode of the automatic transfer switch 1.

Advantageously, the second position corresponding to the manual operating mode is between the first position corresponding to the automatic mode and the third position corresponding to the padlock mode. In the example shown in figures 1, 3 and 5, the first position corresponding to the automatic mode is at the far left end of travel of the mode selector member 3, as shown in figure 1; the third position, corresponding to the padlock mode, is at the rightmost end of travel of the mode selector 3, fig. 5; the second position, corresponding to the manual operating mode, is in the middle of the travel of the mode selector 3, i.e. between the first position and the third position, as shown in figure 3.

In the manual operation mode, a worker operates the automatic transfer switch by operating the handle. As shown in fig. 4, in the second position of the mode selector 3, the operating handle 4 is exposed, and the mode selector 3 is further provided with a manual operation hole 5, and in the second position, the operating panel 6 is exposed through the manual operation hole 5, so that the worker can insert the operating handle 4 into the operating panel 6 to perform manual operation.

According to the utility model discloses a padlock mechanism 7 includes indicating member 71, but pivot ground sets up inside dual power transfer switch's casing, and this indicating member 71 is associated with dual power transfer switch's actuating mechanism 8 and has the first power switch-on position, two branch positions and the second power switch-on position that instruct dual power transfer switch to be in first power switch-on state, two branch states and second power switch-on state respectively.

Specifically, as shown in fig. 12, the drive mechanism 8 of the dual power transfer switch has an outer cover 81, in which an electromagnet 82 and a drive plate and the like are provided, and a link 83 is provided outside the outer cover 81 (of course, the link 83 may be provided inside the outer cover), as shown in fig. 9. Fig. 10 shows, by way of example, two drive mechanisms for the first and second power sources, respectively, which are identical, so only one drive mechanism is described herein. The link 83 is connected to the drive disc so as to be able to pivot with the movement of the drive disc. For example, in the automatic mode, when the electromagnet 82 is energized, the moving core of the electromagnet 82 moves a connecting rod 84, the connecting rod 84 causes the drive disk to rotate, and the rotation of the drive disk causes the connecting rod 83 to pivot about the pivot point R; in the manual operating mode, insertion of the operating handle 4 into the operating disk 6 rotates the operating disk 6, the operating disk 6 being operatively connected to the drive disk, thereby rotating the drive disk, which causes the link 83 to pivot about the pivot point R. The operation of the drive mechanism is described above only briefly, and the operation of the drive mechanism is well known to those skilled in the art and is not relevant to the inventive purposes of the present application. Note that rotation of the drive disc causes the link 83 to pivot, and pivoting of the link 83 causes the indicating member 71 to pivot, thereby indicating the first power-on state, the double-split state, and the second power-on state.

As shown in fig. 9, the indicating member 71 includes a central axis X and a first driven part 711 and a second driven part 712 disposed symmetrically about the central axis, and the link 83 has a first driving part 831 and a second driving part 832.

When the indicating member 71 is in the double split position, the first driving portion 831 and the first driven portion 711 abut against each other, and the second driving portion 832 and the second driven portion 712 abut against each other, whereby the link 83 can hold the indicating member 71 in the double split position, so that the indicating member 71 does not move away from the double split position when the indicating member 71 is collided with by an unexpected external force. When the link 83 is driven to pivot in the clockwise direction, as shown in fig. 10, the second driving portion 832 is out of abutment with the second driven portion 712, the first driving portion 831 drives the first driven portion 711 so that the indicating member 71 pivots in the counterclockwise direction, and the indicating member 71 pivots from the double split position to the first power-on position; when the link 83 is driven to pivot in the counterclockwise direction, as shown in fig. 11, the first driving portion 831 is out of abutment with the first driven portion 711, the second driving portion 832 drives the second driven portion 712 so that the indicating member 71 pivots in the clockwise direction, and the indicating member 71 pivots from the double-split position to the second power position.

The padlock structure further includes a permission member 72, the permission member 72 extending from the mode selector, in this example, the permission member is configured to be mounted to the mode selector so as to be moveable therewith. The locking member 73 is pivotably mounted to the drive mechanism of the dual power automatic transfer switch and is pivotable when the mode selector is in the third position between an initial position (shown in fig. 7) in which a padlock portion 731 of the locking member is located within the housing and a padlock position (shown in fig. 8) in which the padlock portion of the locking member is exposed via an opening provided on the housing. The padlock portion 731 has a padlock hole 732 for receiving a padlock in the padlock position for operation of the padlock. To move the locking member from the initial position to the padlock position, the locking member may be pivoted to the padlock position, for example, by an operator manually pushing a pushing surface S1 (shown in fig. 7) of the locking member. Of course, other ways of being able to push the locking member are possible.

Only when the indicating member 71 is in the double-split position, the permitting member 72 can be interlocked with the indicating member 71 so that the locking member 73 can be pivoted from the initial position to the padlock position for padlock operation, as described below.

As shown in fig. 6, the indicating member 71 has a first engaging portion 711, and the permitting member 72 has a second engaging portion 721, and in the two-divided position of the indicating member 71, when the permitting member 72 moves to the third position along with the mode selector, the first engaging portion 711 and the second engaging portion 721 engage with each other to lock the permitting member 72 and the indicating member 71 to each other. For example, in one example, the first mating portion 711 is in the form of a groove and the second mating portion 721 is in the form of a protrusion that can be inserted into the groove as the mode selector and the mode permitting member are moved to the third position, thereby locking the indicating member and the permitting member to each other, and the protrusion of the permitting member cannot be inserted into the groove when the indicating member is not in the double split position. Thus, it is ensured that the locking member can only be moved between the initial position and the padlock position when the indicating member is in the double-split position, and it is further ensured that the indicating member 71 does not leave the double-split position when the indicating member 71 is collided by an external force in the double-split position.

The padlock structure further comprises a blocking member 74 mounted to the drive mechanism and connected to the locking member 73, for example via a pin 741, so that when the locking member 73 is pivoted between an initial position and a padlock position, the blocking member 74 is movable in a vertical direction indicated by arrow B, between a release position, as shown in fig. 10 and 11, in which the blocking member 74 is not located on the path of movement of the connecting rod 84 connected to the moving core of the electromagnet of the drive mechanism, and a blocking position, as shown in fig. 9, 13 and 14, in which a portion of the blocking member is located on the path of movement (indicated by arrow a in fig. 14) of the connecting rod 84 connected to the moving core of the electromagnet of the drive mechanism, blocking the moving core of the electromagnet from moving. In this way, the blocking member 74 mechanically prevents the moving core of the electromagnet from moving, and prevents the electromagnet from being erroneously operated at the double-split position.

The blocking member 74 has a first guide 742 (e.g., a groove as shown in fig. 13) and the drive mechanism has a second guide 85 (e.g., a protrusion as shown in fig. 13) that cooperate with each other such that the blocking member 74 translates in a vertical direction between the release position and the blocking position as the locking member 73 pivots.

In addition, the dual power automatic transfer switch further includes a sensor 9 (e.g., a micro switch) disposed within the housing. When the mode selection piece is in the first position, namely when the dual-power automatic transfer switch is in the automatic mode, the permission component 72 presses the microswitch, so that the microswitch is in an activated state, and the microswitch can send a signal of the automatic mode to the controller, so that the controller controls the electromagnet of the driving mechanism to operate; when the mode selector is in the second position or the third position, that is, when the dual power automatic transfer switch is in the manual operation mode or the padlock mode, the permission member 72 is disengaged from the pressing with the micro switch, so that the micro switch is switched to the inactivated state, and thus, the controller does not control the operation of the electromagnet. Through the mode, the electromagnet is electrically ensured not to be operated, and the electromagnet at the double-division position is ensured not to be operated mistakenly.

The signal transfer between the sensor (microswitch) and the controller is well known to the person skilled in the art, can be realized in any suitable way and is not essential to the application and is therefore not described in detail herein.

Through the padlock structure of this application, ensured just can carry out the padlock in two branch positions, guaranteed maintenance personal's personal safety.

Although the present invention has been described in the specification and illustrated in the drawings with reference to various embodiments, it will be understood by those skilled in the art that the above embodiments are merely preferred embodiments, and that certain technical features in the embodiments may not be necessary to solve specific technical problems, so that these technical features may not be included or omitted without affecting the solution of the technical problems or the formation of the technical solutions; furthermore, the features, elements, and/or functions of one embodiment may be combined, coupled, or coordinated with the features, elements, and/or functions of one or more other embodiments as appropriate, unless the combination, coupling, or coordination is clearly not practical.

Claims (11)

1. A padlock structure for a dual power automatic transfer switch, the dual power automatic transfer switch comprising a housing and a mode selection member disposed on the housing and movable between at least a first position corresponding to an automatic mode of the dual power automatic transfer switch, a second position corresponding to a manual operation mode of the dual power automatic transfer switch, and a third position corresponding to a padlock mode of the dual power automatic transfer switch to select an operation mode of the dual power automatic transfer switch,

characterized in that the padlock structure comprises:

an indicating member pivotably disposed inside the housing, the indicating member being associated with a drive mechanism of the dual power automatic transfer switch and having a first power position, a double position, and a second power position indicating that the dual power automatic transfer switch is in a first power-on state, a double state, and a second power-on state, respectively;

a permission member extending from the mode selector;

a lock member pivotably mounted to a drive mechanism of the dual power automatic transfer switch, pivotable between an initial position in which a padlock portion of the lock member is located within the housing and a padlock position in which the padlock portion of the lock member is exposed via an opening provided on the housing when the mode selector is in the third position,

wherein the permissive member is capable of interlocking with the indicating member only when the indicating member is in the double-split position, such that the locking member is capable of pivoting from the initial position to the padlock position for padlock operation.

2. The padlock structure of claim 1, wherein the indicator member has a first engagement portion and the permissive member has a second engagement portion, wherein in the double-split position of the indicator member, the first and second engagement portions engage and interlock with each other when the permissive member moves to the third position with the mode selector.

3. The padlock structure of claim 2, wherein the first engaging portion is a groove and the second engaging portion is a protrusion.

4. The padlock structure of claim 1, further comprising a blocking member mounted to the drive mechanism and secured to the locking member, the blocking member being movable between a release position, in which the blocking member is not in a path of movement of the moving core of the electromagnet of the drive mechanism, and a blocking position, in which a portion of the blocking member is in the path of movement of the moving core of the electromagnet of the drive mechanism, blocking movement of the moving core of the electromagnet, when the locking member is pivoted between the initial position and the padlock position.

5. The padlock structure of claim 4, wherein the blocking member has a first guide, the drive mechanism being provided with a second guide, the first and second guides cooperating with each other such that the blocking member translates between the release position and the blocking position.

6. The padlock structure of claim 5, wherein the first guide is a groove and the second guide is a protrusion.

7. The padlock structure of claim 1, wherein the padlock portion of the locking member has a padlock aperture for receiving a padlock in a padlock position for operation of the padlock.

8. The padlock structure of claim 1, wherein the dual power automatic transfer switch further comprises a sensor disposed within the housing, the sensor being switchable between an activated state in which the sensor is capable of sending a signal to the controller for an automatic mode to cause the controller to control operation of the electromagnet of the drive mechanism, and a deactivated state in which the sensor is incapable of sending a signal to the controller for a mode such that the controller does not control operation of the electromagnet,

in a first position of the mode selector the permissive member abuts the sensor, causing the sensor to be in an activated state, thereby providing a signal to the controller for an automatic mode,

in the second position and the third position of the mode selector, the permitting member is disengaged from the sensor, and the sensor is switched to the deactivated state.

9. The padlock structure of claim 8, wherein the sensor is a microswitch.

10. The padlock structure of claim 1, wherein the drive mechanism of the dual power automatic transfer switch has a linkage pivotally mounted to the drive mechanism and operatively connected to the indicating member, the linkage being capable of pivoting driven by electromagnetic or manual operating forces in the automatic mode and the manual operating mode to drive the indicating member to pivot between the first power position, the double-split position, and the second power position,

the indicating member includes a central axis and first and second driven portions symmetrically disposed about the central axis, the link has first and second driving portions,

at the double-division position of the indicating member, the first driving part is abutted with the first driven part, and the second driving part is abutted with the second driven part; when the connecting rod is driven to pivot, the first driving part drives the first driven part to enable the indicating member to pivot along the first direction, and the indicating member pivots from the double-division position to the first power-on position; when the link is driven to pivot, the second driving portion drives the second driven portion to pivot the indicating member in a second direction opposite to the first direction, and the indicating member pivots from the double-split position to the second power position.

11. A dual power automatic transfer switch, characterized in that it comprises a padlock structure according to any one of claims 1 to 10.

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