CN218482128U - Padlock mechanism and dual-power transfer switch - Google Patents

Abstract

The application discloses padlock mechanism and dual power change over switch, relate to low voltage apparatus technical field, the padlock mechanism of the application, including interior casing and the curb plate that sets up with interior casing interval, the pivot passes the lateral wall and the curb plate of interior casing in proper order, be provided with the axle sleeve of being connected with the pivot rotation in the pivot between interior casing and the curb plate, axial sliding connection between axle sleeve and the pivot, padlock mechanism includes that the axle sleeve is close to the free state of interior casing and the axle sleeve is kept away from to the closure state of casing, be provided with on the axle sleeve and press splenium and spacing portion, press the splenium and be used for pressing down micro-gap switch when the closure state, spacing portion is used for the rotation of restriction axle sleeve when the closure state. The padlock mechanism and the dual-power-supply change-over switch avoid abnormal opening of a power supply after the padlock mechanism is locked, and improve the safety of dual-power supplies of the three-position power-supply change-over switch.

Description

Padlock mechanism and dual-power transfer switch

Technical Field

The application relates to the technical field of low-voltage apparatuses, in particular to a padlock mechanism and a dual-power transfer switch.

Background

An Automatic Transfer Switching Equipment (ATSE) is born in response to the requirement of continuity of power supply. With the continuous and deep requirements of people on the continuity, safety and reliability of power supply, the dual-power transfer switch is more and more widely applied. In important public places such as hotels and theaters where people gather, the power supply interruption causes disorder and even endangers the life safety of guests.

The ATSE has two positions and three positions, wherein the two positions mean that the movable contact of the ATSE can only be switched between the fixed contacts of the first power supply and the second power supply; the moving contact is always connected with a fixed contact in the power supply, so that the load terminal connected with the moving contact is always electrified. Such products do not provide the electrically isolated application requirements for equipment maintenance. The three positions are that the movable contact of the ATSE can stay on the static contacts of the first power supply and the second power supply and can also stay in a double-division position which is not in contact with the static contacts of the first power supply and the second power supply.

Three-position ATSE among the prior art does not have padlock mechanism for ATSE in two branch positions has operating personnel maloperation to make the moving contact jump when equipment maintenance, and the circuit switches on unusually, has reduced the security of dual supply product.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a padlock mechanism and a dual-power-supply change-over switch, which avoid abnormal opening of a power supply after the padlock mechanism is locked, and improve the safety of dual-power supplies of the three-position power-supply change-over switch.

The embodiment of the application provides a padlock mechanism on the one hand, be applied to dual supply change over switch, including interior casing and with the curb plate that interior casing interval set up, the pivot passes lateral wall and the curb plate of interior casing in proper order, be provided with the axle sleeve of being connected with the pivot rotation in the pivot between interior casing and the curb plate, axial sliding connection between axle sleeve and the pivot, the axle sleeve is including the closure state that is close to interior casing and the free state of keeping away from interior casing, be provided with on the axle sleeve and press splenium and spacing portion, it is used for pressing dual supply change over switch's micro-gap switch when closure state to press splenium, spacing portion is used for the rotation of restriction axle sleeve when closure state.

As an implementation manner, a locking hole is radially arranged on the rotating shaft, a handle hole is arranged on the shaft sleeve corresponding to the locking hole, in a free state, the handle hole and the locking hole are coaxial, so that the handle sequentially passes through the handle hole and the locking hole, the rotating of the handle drives the rotating shaft and the shaft sleeve to rotate, so that the dual-power transfer switch is switched on, or in a free state, the micro switch controls the rotating shaft to drive the shaft sleeve to rotate, so that the dual-power transfer switch is switched on or switched off.

As an implementable mode, the pressing part comprises a connecting part extending along the radial direction far away from the shaft sleeve direction and a toggle part connected with the connecting part, the toggle part extends along the axial direction of the rotating shaft, and the end part of the toggle part is used for pressing the microswitch.

As an implementable mode, the shaft sleeve penetrates through the part of the side plate to be exposed, the limiting part comprises a protrusion arranged on the shaft sleeve, the protrusion is arranged at the end part, close to the inner shell, of the shaft sleeve and is arranged opposite to the pressing part, and the protrusion extends in the direction, far away from the shaft sleeve, of the radial direction of the rotating shaft and is used for abutting against the side plate to limit the range of the shaft sleeve moving in the direction far away from the inner shell.

As a practical mode, the bottom surface of the inner shell extends towards the side plate to form an extension plate, the extension plate is in contact with the side plate, a shaft sleeve limiting table is arranged on the extension plate, the protrusion is used for abutting against the shaft sleeve limiting table in a locking state to prevent the protrusion from rotating, and the protrusion is also used for limiting the shaft sleeve from approaching the inner shell when the protrusion and the shaft sleeve limiting table are overlapped in position in a free state.

As an implementation manner, an elastic member is arranged between the shaft sleeve and the inner shell and used for pushing the shaft sleeve to reset when the padlock mechanism is unlocked.

As an implementation mode, the elastic element includes a compression spring, the compression spring is sleeved on the rotating shaft, one end of the compression spring is connected with the inner shell, and the other end of the compression spring is connected with the shaft sleeve.

As a practical mode, the rotating shaft comprises a prism, and the inner wall of the shaft sleeve is enclosed to form a channel corresponding to the prism.

As an implementation manner, a rotating shaft hole is arranged on the side surface of the inner shell opposite to the side plate, and the side wall of the rotating shaft hole protrudes out of the inner shell.

The padlock mechanism is connected with the operating mechanism, and the padlock mechanism controls the movable contact to rotate through the operating mechanism.

The beneficial effects of the embodiment of the application include:

the padlock mechanism that the embodiment of the application provides, be applied to dual power change over switch, including interior casing and the curb plate that sets up with interior casing interval, the pivot passes the lateral wall and the curb plate of interior casing in proper order, be provided with the axle sleeve of being connected with the pivot rotation in the pivot between interior casing and the curb plate, axial sliding connection between axle sleeve and the pivot, at gliding in-process, the axle sleeve is including being close to the closure state of interior casing and the free state of keeping away from interior casing, be provided with on the axle sleeve and press splenium and spacing portion, it is used for pressing dual power change over switch's micro-gap switch when closure state to press splenium, spacing portion is used for the rotation of restriction axle sleeve when closure state. When the shaft sleeve is in a locked state, the rotation of the shaft sleeve is limited due to the arrangement of the limiting portion, so that the rotation of the rotating shaft is limited, an operator cannot rotate the rotating shaft through a manual operation mode, and the manual operation mode cannot be carried out in the locked state.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of a padlock mechanism according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural view of a padlock mechanism according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a shaft sleeve according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of an inner casing according to an embodiment of the present disclosure;

FIG. 5 is a diagram illustrating one of the states of a padlock according to an embodiment of the present disclosure;

fig. 6 is a second schematic view illustrating a state of a padlock according to an embodiment of the present application;

fig. 7 is a third schematic view illustrating a padlock according to an embodiment of the present invention;

fig. 8 is a fourth state diagram of a padlock structure according to an embodiment of the present application.

An icon: 100-a padlock mechanism; 110-an inner housing; 111-an extension plate; 112-rotating shaft hole; 113-a shaft sleeve limit table; 120-side plate; 130-a rotating shaft; 131-locking holes; 140-a shaft sleeve; 141-a pressing part; 142-a connecting portion; 143-a toggle part; 144-a handle hole; 145-bumps; 150-an elastic member; 20-micro switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The embodiment of the application provides a padlock mechanism 100, which is applied to a dual power transfer switch, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the padlock mechanism 100 includes an inner housing 110 and a side plate 120 spaced from the inner housing 110, a rotating shaft 130 sequentially penetrates through a side wall of the inner housing 110 and the side plate 120, a shaft sleeve 140 rotatably connected with the rotating shaft 130 is arranged on the rotating shaft 130 between the inner housing 110 and the side plate 120, the shaft sleeve 140 is axially and slidably connected with the rotating shaft 130, the shaft sleeve 140 includes a locked state close to the inner housing 110 and a free state far away from the inner housing 110, a pressing portion 141 and a limiting portion are arranged on the shaft sleeve 140, the pressing portion 141 is used for pressing a micro switch 20 of the dual power transfer switch in the locked state, and the limiting portion is used for limiting rotation of the shaft sleeve 140 in the locked state.

The padlock mechanism 100 provided by the embodiment of the application is applied to a double-power-supply change-over switch comprising double separated positions, the shaft sleeve 140 is in sliding connection with the rotating shaft 130, when the shaft sleeve 140 slides to a position close to the inner shell 110, the padlock mechanism 100 is in a locking state, at the moment, the pressing part 141 presses the micro switch 20 of the double-power-supply change-over switch, so that the micro switch 20 of the double-power-supply change-over switch is invalid, meanwhile, due to the existence of the limiting part, the rotation of the shaft sleeve 140 is limited by the arrangement of the limiting part, the rotation of the rotating shaft 130 is limited, an operator cannot rotate the rotating shaft 130 through a manual operation mode, and the manual operation mode cannot be carried out in the locking state. Therefore, when the padlock mechanism 100 is in a locked state, the manual operation mode and the electric operation mode fail simultaneously, abnormal opening of a power supply in the locked state is avoided, and safety of dual power supply of the three-position power supply change-over switch is improved.

It should be noted that, in the padlock mechanism 100 according to the embodiment of the present invention, when maintenance or inspection of the equipment is required, the dual power transfer switch is locked and isolated manually, so that when maintenance or inspection of the equipment is required, the shaft sleeve 140 is slid manually to a position close to the inner housing 110. In addition, when the padlock mechanism 100 is in the locked state, the shaft sleeve 140 is in a fixed position, and in order to ensure the safety of maintenance personnel, when power needs to be supplied again after the maintenance is completed, the shaft sleeve 140 is slid to a position far away from the inner housing 110.

The padlock mechanism 100 provided by the embodiment of the application is applied to a dual power transfer switch, and includes an inner housing 110 and a side plate 120 spaced from the inner housing 110, wherein a rotating shaft 130 sequentially penetrates through a side wall of the inner housing 110 and the side plate 120, a shaft sleeve 140 rotatably connected with the rotating shaft 130 is arranged on the rotating shaft 130 between the inner housing 110 and the side plate 120, the shaft sleeve 140 is axially slidably connected with the rotating shaft 130, in the sliding process, the shaft sleeve 140 includes a locked state close to the inner housing 110 and a free state far away from the inner housing 110, a pressing portion 141 and a limiting portion are arranged on the shaft sleeve 140, the pressing portion 141 is used for pressing a micro switch 20 of the dual power transfer switch in the locked state, and the limiting portion is used for limiting rotation of the shaft sleeve 140 in the locked state. When the shaft sleeve 140 is in the locked state, the rotation of the shaft sleeve 140 is limited due to the arrangement of the limiting portion, so that the rotation of the rotating shaft 130 is limited, an operator cannot rotate the rotating shaft 130 in a manual operation mode, and the manual operation mode cannot be performed in the locked state, in addition, the pressing portion 141 presses the micro switch 20 in the locked state, and the control of the micro switch 20 on the dual-power transfer switch is disconnected, so that the manual operation mode and the automatic control mode fail simultaneously when the padlock mechanism 100 is in the locked state, the abnormal opening of a power supply in the locked state is avoided, and the safety of dual-power supply of the three-position power transfer switch is improved.

Optionally, a locking hole 131 is radially disposed on the rotating shaft 130, a handle hole 144 is disposed on the shaft sleeve 140 corresponding to the locking hole 131, in a free state, the handle hole 144 is coaxial with the locking hole 131, so that a handle sequentially passes through the handle hole 144 and the locking hole 131, the handle rotates to drive the rotating shaft 130 and the shaft sleeve 140 to rotate so as to switch on the dual power transfer switch, or the micro switch 20 controls the rotating shaft 130 to drive the shaft sleeve 140 to rotate so as to switch on or switch off the dual power transfer switch.

When the shaft sleeve 140 slides to a position far away from the inner shell 110, the padlock mechanism 100 is in a free state, the handle hole 144 on the shaft sleeve 140 is coaxial with the locking hole 131 on the rotating shaft 130, the padlock mechanism 100 is in a free state, and the handle sequentially penetrates through the handle hole 144 and the locking hole 131, at the moment, the handle can be rotated, the rotating shaft 130 is driven to rotate by the rotation of the handle due to the fact that the handle penetrates through the locking hole 131, the rotating shaft 130 is connected with the operating mechanism of the dual-power change-over switch, and therefore the state of the dual-power change-over switch is controlled through the handle, and the operating mode of the handle is achieved; or when the shaft sleeve 140 slides to a position far away from the inner housing 110, the padlock mechanism 100 is in a free state, the pressing portion 141 is far away from the micro switch 20 of the dual power transfer switch, so that the micro switch 20 of the dual power transfer switch is in an open state, and the micro switch 20 controls the state of the dual power transfer switch through a signal, thereby realizing an automatic control mode.

In addition, when the shaft sleeve 140 slides to a position close to the inner housing 110, the padlock mechanism 100 is in a locked state, the handle hole 144 and the locking hole 131 are staggered to expose the locking hole 131, in order to improve stability of the locked state, a locking member can be inserted into the locking hole 131 to lock a position relation between the rotating shaft 130 and the shaft sleeve 140, and the arrangement of the locking member can also remind an operator that the padlock mechanism 100 is in the locked state at the moment, so that misoperation is avoided.

In an implementation manner of the embodiment of the present application, the pressing portion 141 includes a connecting portion 142 extending in a direction away from the bushing 140 along a radial direction and a toggle portion 143 connected to the connecting portion 142, the toggle portion 143 extends along an axial direction of the rotating shaft 130, and an end of the toggle portion 143 is used for pressing the micro switch 20.

The microswitch 20 is disposed on the outer wall of the inner housing 110 facing the side plate 120, in order to protect the microswitch 20, a housing is disposed on the outer periphery of the microswitch 20, and the housing protrudes out of the microswitch 20, in order to avoid interference between the housing and the shaft sleeve 140, so that the pressing portion 141 is not pressed successfully, the pressing portion 141 is disposed to include a connecting portion 142 extending in a direction away from the shaft sleeve 140 along a radial direction and a toggle portion 143 connected to the connecting portion 142, so that the toggle portion 143 protrudes out of the shaft sleeve 140 along the radial direction and the axial direction, thereby pressing the microswitch 20.

In an implementation manner of the embodiment of the present application, as shown in fig. 1 and fig. 2, the shaft sleeve 140 is partially exposed through the side plate 120, the limiting portion includes a protrusion 145 disposed on the shaft sleeve 140, the protrusion 145 is disposed at an end of the shaft sleeve 140 close to the inner housing 110 and is opposite to the pressing portion 141, and the protrusion 145 extends in a direction away from the shaft sleeve 140 along a radial direction of the rotating shaft 130, and is used for abutting against the side plate 120 to limit a range of movement of the shaft sleeve 140 in a direction away from the inner housing 110.

As can be seen from the above, the shaft sleeve 140 is partially exposed through the side plate 120, in order to limit the position of the padlock mechanism 100 in the free state, the end of the shaft sleeve 140 close to the inner housing 110 is provided with the protrusion 145, the protrusion 145 extends in the radial direction of the rotating shaft 130 in the direction away from the shaft sleeve 140, when the shaft sleeve 140 moves in the direction away from the inner housing 110, the protrusion 145 is driven to move in the direction away from the inner housing 110 until the protrusion 145 contacts the side plate 120, and as the protrusion 145 extends in the radial direction of the rotating shaft 130 in the direction away from the shaft sleeve 140, the protrusion 145 abuts against the side plate 120, the side plate 120 prevents the protrusion 145 from continuing to move, thereby preventing the shaft sleeve 140 from continuing to move, and limiting the range of the shaft sleeve 140 moving in the direction away from the inner housing 110.

When the protrusion 145 abuts against the side plate 120, the handle hole 144 of the shaft sleeve 140 is coaxial with the locking hole 131 of the rotating shaft 130, and at this time, the padlock mechanism 100 is in a free state.

Optionally, an extension plate 111 extends from the bottom surface of the inner housing 110 to the side plate 120, the extension plate 111 contacts with the side plate 120, a shaft sleeve limiting table 113 is disposed on the extension plate 111, the protrusion 145 is used for abutting against the shaft sleeve limiting table 113 in the locked state, and preventing the protrusion 145 from rotating, and the protrusion 145 is further used for limiting the shaft sleeve 140 from approaching the inner housing 110 when the protrusion 145 overlaps with the shaft sleeve limiting table 113 in the free state.

When the padlock mechanism 100 is in a locked state, the protrusion 145 is limited by the shaft sleeve limiting table 113 and cannot rotate due to the position relationship between the shaft sleeve limiting table 113 and the protrusion 145, the shaft sleeve 140 is fixedly connected with the protrusion 145, so that the shaft sleeve limiting table 113 limits the rotation of the shaft sleeve 140, and the shaft sleeve 140 is rotatably connected with the rotating shaft 130, so that the rotating shaft 130 cannot rotate, and when the padlock mechanism 100 is in the locked state, the manual mode cannot be controlled by manually rotating the rotating shaft 130.

When the padlock mechanism 100 is in a free state, the dual power transfer switch is in an open state or a close state under the control of the handle operation mode or the automatic control mode. When the dual power transfer switch is in the handle operation mode, as shown in fig. 5 and 6, when the dual power transfer switch is in the opening state (fig. 6) or the closing state (fig. 5), the shaft sleeve 140 cannot slide on the rotating shaft 130 because the handle passes through the handle hole 144 on the shaft sleeve 140 and the locking hole 131 on the rotating shaft 130 in sequence, so that the locking of the padlock mechanism 100 cannot be realized. When the dual power transfer switch is in the automatic control mode, as shown in fig. 7, when the dual power transfer switch is in the opening state, the protrusion 145 rotates to the position dislocated with the shaft sleeve limiting table 113 along with the shaft sleeve 140, and at this time, the shaft sleeve 140 can be manually slid to the position close to the inner housing 110, so that the padlock mechanism 100 is locked. As shown in fig. 8, when the dual power transfer switch is in a closing state, the protrusion 145 rotates to a position coinciding with the shaft sleeve limiting table 113 along with the shaft sleeve 140, and at this time, due to the blocking of the shaft sleeve limiting table 113, the protrusion 145 cannot move towards the inner housing 110, that is, the shaft sleeve 140 cannot move towards the inner housing 110, so that the padlock mechanism 100 is prevented from being locked, the danger caused by locking the power transfer switch in the closing state is avoided, and the safety of the dual power device is improved.

Optionally, a resilient member 150 is provided between the sleeve 140 and the inner housing 110 for urging the sleeve 140 to reset when the padlock mechanism 100 is unlocked.

When the shaft sleeve 140 slides on the rotating shaft 130, any position of the rotating shaft 130 between the inner housing 110 and the side plate 120 can be set, when the dual power transfer switch needs to be locked, the shaft sleeve 140 needs to be manually moved to be close to the inner housing 110, when the dual power transfer switch works, the shaft sleeve 140 needs to be moved to be far from the inner housing 110, and the labor intensity of an operator is increased.

In an implementation manner of the embodiment of the present application, as shown in fig. 1, the elastic member 150 includes a compression spring, the compression spring is sleeved on the rotating shaft 130, one end of the compression spring is connected to the inner housing 110, and the other end of the compression spring is connected to the shaft sleeve 140. The middle part of pressure spring forms certain space, and the cover is established on pivot 130, can realize the stable fixed to elastic component 150, moreover because the both ends of pressure spring are circular, and the area of contact with interior casing 110 and axle sleeve 140 is great, realizes the stable holding power of supporting to axle sleeve 140.

Alternatively, as shown in fig. 3 and 7, the shaft 130 includes a prism, and the inner wall of the sleeve 140 encloses to form a channel corresponding to the prism.

The prism-shaped channel and the prism-shaped rotating shaft 130 enable the prism to be clamped in the channel and only slide along the axial direction, and the shaft sleeve 140 is driven to rotate when the rotating shaft 130 rotates.

It should be noted that, in the embodiment of the present application, the prism-shaped channel corresponding to the prism-shaped channel of the rotating shaft 130 is not only that the number of the prisms is the same, but also that the prisms are matched in size, because only if the number and the size are matched, the rotating shaft 130 can drive the shaft sleeve 140 to rotate when rotating, so that the shaft sleeve 140 is located at the opening position or the closing position.

In an implementation manner of the embodiment of the present application, as shown in fig. 4, a rotation shaft hole 112 is disposed on a side surface of the inner housing 110 opposite to the side plate 120, and a sidewall of the rotation shaft hole 112 protrudes from the inner housing 110.

The part of power change over switch sets up outside interior casing 110, because the setting of inner structure, make the distance between the lateral wall of interior casing 110 and the curb plate 120 great, and axle sleeve 140 and pivot 130 need stretch out curb plate 120 and be connected with the handle, make the length of pressure spring great, in order to make the position fixing that axle sleeve 140 was realized to shorter pressure spring, this application is with the lateral wall protrusion in interior casing 110 of pivot hole 112, make the lateral wall of pivot hole 112 occupy certain length, thereby shorten the length of pressure spring.

The embodiment of the application also discloses a dual power transfer switch, which comprises a moving contact, an operating mechanism connected with the moving contact and the padlock mechanism 100 connected with the operating mechanism, wherein the padlock mechanism 100 controls the moving contact to rotate through the operating mechanism. The dual power transfer switch includes the same structure and benefits as the padlock mechanism 100 in the previous embodiment. The structure and advantages of the padlock mechanism 100 have been described in detail in the foregoing embodiments and will not be described in detail herein.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The padlock mechanism (100) is applied to a dual-power transfer switch and is characterized by comprising an inner shell (110) and side plates (120) arranged at intervals on the side walls of the inner shell (110), wherein a rotating shaft (130) sequentially penetrates through the side walls of the inner shell (110) and the side plates (120), a shaft sleeve (140) rotatably connected with the rotating shaft (130) is arranged on the rotating shaft (130) between the inner shell (110) and the side plates (120), the shaft sleeve (140) is axially and slidably connected with the rotating shaft (130), the shaft sleeve (140) comprises a locking state close to the inner shell (110) and a free state far away from the inner shell (110), a pressing portion (141) and a limiting portion are arranged on the shaft sleeve (140), the pressing portion (141) is used for pressing a microswitch (20) of the dual-power transfer switch in the locking state, and the limiting portion is used for limiting rotation of the shaft sleeve (140) in the locking state.

2. The padlock mechanism (100) according to claim 1, wherein a locking hole (131) is radially formed in the rotating shaft (130), a handle hole (144) is formed in the shaft sleeve (140) corresponding to the locking hole (131), in the free state, the locking hole (131) is coaxial with the handle hole (144) so that a handle sequentially penetrates through the handle hole (144) and the locking hole (131), the handle rotates to drive the rotating shaft (130) and the shaft sleeve (140) to rotate so that the dual-power transfer switch is switched on, or in the free state, the microswitch (20) controls the rotating shaft (130) to drive the shaft sleeve (140) to rotate so that the dual-power transfer switch is switched on or switched off.

3. The padlock mechanism (100) according to claim 1, characterized in that the pressing portion (141) comprises a connecting portion (142) extending radially away from the bushing (140) and a toggle portion (143) connected to the connecting portion (142), the toggle portion (143) extending axially of the spindle (130), an end of the toggle portion (143) being used to press the microswitch (20).

4. The padlock mechanism (100) according to claim 3, wherein the shaft sleeve (140) penetrates through the side plate (120) to be partially exposed, the limiting portion comprises a protrusion (145) arranged on the shaft sleeve (140), the protrusion (145) is arranged at an end portion, close to the inner housing (110), of the shaft sleeve (140) and is opposite to the pressing portion (141), and the protrusion (145) extends along a radial direction of the rotating shaft (130) in a direction away from the shaft sleeve (140) and is used for abutting against the side plate (120) to limit a range of movement of the shaft sleeve (140) in a direction away from the inner housing (110).

5. The padlock mechanism (100) according to claim 4, wherein an extension plate (111) extends from the bottom surface of the inner housing (110) to the side plate (120), the extension plate (111) is in contact with the side plate (120), a bushing limit table (113) is arranged on the extension plate (111), the protrusion (145) is used for abutting against the bushing limit table (113) in the locked state to prevent the protrusion (145) from rotating, and the protrusion (145) is further used for limiting the bushing (140) from approaching the inner housing (110) when the protrusion (145) and the bushing limit table (113) are overlapped in position in the free state.

6. A padlock mechanism (100) according to claim 1, characterized in that an elastic member (150) is provided between the bushing (140) and the inner case (110) for urging the bushing (140) to return when the padlock mechanism (100) is unlocked.

7. The padlock mechanism (100) according to claim 6, characterized in that said elastic member (150) comprises a compression spring, which is fitted over said rotating shaft (130), one end of which is connected to said inner housing (110) and the other end of which is connected to said shaft housing (140).

8. The padlock mechanism (100) according to claim 1, characterized in that the spindle (130) comprises a prism, the inner wall of the bushing (140) enclosing a passage corresponding to the prism.

9. The padlock mechanism (100) according to claim 1, characterized in that a rotation shaft hole (112) is provided on the side of the inner housing (110) opposite to the side plate (120), and a side wall of the rotation shaft hole (112) protrudes from the inner housing (110).

10. A dual power transfer switch comprising a movable contact, an operating mechanism coupled to said movable contact, and a padlock mechanism (100) as recited in any one of claims 1 to 9 coupled to said operating mechanism, wherein said padlock mechanism (100) controls rotation of said movable contact via said operating mechanism.

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