A kind of double power transfer switch's padlock device

Abstract

The utility model provides a kind of padlock device of dual power transfer switch, padlock device includes: first stop piece;Push plate, its upper is equipped with push end;Connecting rod is connected with push plate and is equipped with slot, fixed shaft is equipped on shell, and fixed shaft is arranged in slot;Lock catch, it is movably arranged in the lock catch mouth of shell, it is sequentially equipped with limit surface, lock slot and connecting portion from top to bottom;Second stop piece, it is horizontally slidably arranged on shell, second stop piece is connected by second spring with fixed shaft, and it is abutted with push end, and it can be moved under the pushing of push end;Lock catch is locked from the outside of shell lock slot, and all operating holes on shell are respectively shielded by first stop piece and second stop piece.The utility model has the beneficial effect that operating personnel can manually make all operating holes on dual power transfer switch be shielded, avoid artificial misoperation caused economic or personnel loss.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical switch technology, and in particular to a padlock device for a dual power supply transfer switch. Background Technology

[0002] Dual power transfer switches generally have three operating states: main power closed, backup power closed, and dual open. Their operating modes include automatic switching mode, manual operation mode, and padlock mode.

[0003] When the dual power transfer switch is in manual operation mode, the operator can manually operate it through the three operating holes on the switch. Specifically, the operator can manually switch the load circuit to the main power supply or the backup power supply through the selector hole, quickly disconnect all power through the dual disconnect hole, or perform closing and opening operations through the handle operating hole. When the dual power transfer switch is in automatic switching mode, the controller controls the closing and opening operations of the switch.

[0004] When the power supply system needs maintenance, the dual power transfer switch must be in the dual open state. Then, the dual power transfer switch is locked in the dual open state by a padlock device, and its operation mode is switched to padlock mode. This prevents other personnel from manually operating the dual power transfer switch in the dual open state, thus preventing economic or personnel losses caused by such actions. This provides protection and ensures electrical safety.

[0005] Chinese utility model patent CN217544404U discloses an operation mode locking module for an automatic selector switch device. This module includes components such as a cam, rocker arm, padlock plate, control box, and hidden door. It achieves interlocking between three positions: "automatic," "manual," and "padlock." Only when the automatic selector switch is in the split position, with the cam rotating to the middle position and the rocker arm's limit released, can the padlock plate be pulled out. Simultaneously, the hidden door is closed by the pushing force of the curved protrusion, obstructing the manual operation hole area. When the operating mechanism is in other positions, the padlock plate is limited and cannot be pulled out for padlocking. While this device effectively prevents accidental operation, its numerous parts, complex structure, and high manufacturing difficulty make it challenging to manufacture and maintain, requiring further improvement. Utility Model Content

[0006] The purpose of this utility model is to provide a padlock device with a dual power supply changeover switch, which has a simple overall structure, is easy to process and maintain, and has a good effect in preventing misoperation.

[0007] This utility model provides a padlock device with a dual power supply changeover switch. The padlock device includes: a first stop, slidably mounted on the housing; a push plate, slidably mounted on the housing and connected to the first stop, having a push end thereon; a connecting rod, connected to the push plate and having a slot, with a fixed shaft on the housing, the fixed shaft passing through the slot; a latch, movably mounted in the latch opening of the housing, having a limiting surface, a latch groove, and a connecting part arranged sequentially from top to bottom, the limiting surface being located on the outside of the housing to prevent the latch from disengaging from the latch opening; the connecting part being located in the slot and above the fixed shaft; the connecting part being connected to the fixed shaft via a first spring; and a second stop, slidably mounted on the housing, the second stop being connected to the fixed shaft via a second spring and abutting against the push end, and being movable under the push of the push end; when the lock limits and fixes the latch groove on the outside of the housing, all operating holes on the housing are blocked by the first stop and the second stop, respectively.

[0008] Preferably, the push plate is further provided with a first groove and a second groove arranged opposite to each other, and the push plate portion located between the first groove and the second groove is a plate body; it also includes a limiting member provided on the housing, the upper end of the limiting member is provided with an elastic bending portion, the elastic bending portion includes a first piece and a second piece connected together, the outer convex surface at the connection between the two is the limiting portion, the limiting portion elastically abuts against the housing, and is used to limit the plate body.

[0009] Preferably, the width of the elastic bend is smaller than the width of both the first groove and the second groove.

[0010] Preferably, the connecting part is a limiting rod.

[0011] Preferably, the second stop has an inclined surface that gradually moves away from the connecting rod from top to bottom, and the inclined surface abuts against the pushing end.

[0012] Preferably, the housing is provided with a vertical groove, and the first stop is slidably connected to the groove via a sliding member.

[0013] Preferably, the push plate is connected to the slider.

[0014] Preferably, the push plate and the connecting rod are detachably connected or integrally formed.

[0015] Preferably, the first stop is disposed on the outside of the housing, and the push plate, connecting rod and second stop are both disposed on the inside of the housing.

[0016] Preferably, the inner side of the housing is provided with a horizontally extending guide shaft, and the second stop is slidably disposed on the guide shaft.

[0017] Preferably, the operating holes on the housing include a split hole, a selection hole, and a handle operating hole. The split hole and the selection hole are both distributed on the sliding path of the first stop, and the handle operating hole is distributed on the sliding path of the second stop.

[0018] The advantage of this invention lies in providing a simple and easy-to-assemble padlock device. This device includes a first stop, a second stop, and a transmission structure between them. The operator can manually move both stops simultaneously to block all operating holes on the dual-power transfer switch, preventing economic or personnel losses due to human error and effectively ensuring the safety of line maintenance. When it is necessary to open the operating holes, the padlock is released, allowing the first and second stops to return to their original positions. This padlock device is simple to use and easy to operate, avoiding the problems of complex usage or difficult maintenance caused by numerous parts. It has a good effect in preventing misoperation and effectively ensures electrical safety. Attached Figure Description

[0019] Figure 1 This diagram illustrates the position of the first stop on the housing when all operating holes are open. Figure 1 ;

[0020] Figure 2 This diagram illustrates the position of the first stop on the housing when all operating holes are open. Figure 2 ;

[0021] Figure 3 This is a three-dimensional view of the shell;

[0022] Figure 4 This is a schematic diagram showing how to operate the control mechanism inside the housing using a handle through the handle operation hole;

[0023] Figure 5 This is a schematic diagram of the padlock device in Embodiment 1;

[0024] Figure 6 This is a structural schematic diagram of the first stop component;

[0025] Figure 7 This is a schematic diagram of the push plate structure;

[0026] Figure 8 This is a schematic diagram of the connecting rod structure;

[0027] Figure 9 A schematic diagram of the structure in which the push plate and connecting rod are integrally formed and connected;

[0028] Figure 10 This is a schematic diagram of the latch structure;

[0029] Figure 11 This is a structural schematic diagram of the second stop;

[0030] Figure 12 This is a schematic diagram showing the position of the first stop on the housing when all operating holes are closed.

[0031] Figure 13 This is a schematic diagram of the padlock device in Embodiment 2;

[0032] Figure 14 This is a structural schematic diagram of the limiting component;

[0033] Figure 15 A schematic diagram of the padlock device in Example 2 with all operating holes in the open position;

[0034] Figure 16 This is a schematic diagram of the padlock device in Example 2 when all operating holes are closed.

[0035] In the picture:

[0036] 1. Housing; 1a. Dual split hole; 1b. Selection hole; 1c. Handle operation hole; 1d. Locking hole; 11. Slide groove; 12. Guide shaft; 13. Fixed shaft; 14. Front wall; 15. Left wall; 16. Top wall;

[0037] 2. First stop; 21. Sliding component;

[0038] 3. Push plate; 31. Connecting shaft; 321. First groove; 322. Second groove; 323. Plate body; 33. Pushing end;

[0039] 4. Connecting rod; 41. Connecting hole; 42. Slot;

[0040] 5. Lock; 51. Connecting part; 52. Lock groove; 53. Limiting surface;

[0041] 6. Second stop; 61. Inclined surface; 62. Sliding bracket; 63. Connecting bracket;

[0042] 71. First spring; 72. Second spring;

[0043] 8. Limiting component; 81. Fixing hole; 82. Elastic bending part; 821. First piece; 822. Second piece; 823. Limiting part; 83. Clearance part;

[0044] 9. Lock;

[0045] 100; wrench; 200; operating mechanism. Detailed Implementation

[0046] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0047] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0050] Figure 1 The diagram shows the position of the first stop on the housing. In the following description, it will be referred to as... Figure 1 The attached diagram serves as a reference for orientation. The height direction of the housing 1 is defined as the up-down direction or the vertical direction, and the double-splitting hole 1a is located above the first stop 2. The length direction of the housing 1 is defined as the left-right direction or the horizontal direction, and the double-splitting hole 1a is located to the left of the selection hole 1b. The width direction of the housing 1 is defined as the front-back direction, and the first stop 2 is located on the front side of the front wall 14.

[0051] like Figure 1-4 As shown, the dual power supply changeover switch includes a housing 1, which includes a front wall 14, a left wall 15 disposed on the left side of the front wall 14, and a top wall 16 disposed above the front wall 14. The front wall 14 is provided with three operating holes, including a dual-splitting hole 1a, a selection hole 1b, and a handle operating hole 1c.

[0052] When the dual power transfer switch is in manual operation mode, the operator can manually switch the load circuit to the main power supply or the backup power supply through the selection hole 1b, or quickly cut off all power through the dual disconnect hole 1a, or use the wrench 100 to adjust the operating mechanism 200 inside the housing 1 through the handle operation hole 1c to complete the corresponding closing and opening operations.

[0053] When the power supply system needs maintenance, the dual power transfer switch must be in the open position. Then, a padlock device should be used to lock the dual power transfer switch in the open position to prevent other personnel from manually operating the dual power transfer switch in the open position.

[0054] This utility model provides a padlock device with a dual power supply changeover switch, which has the following two embodiments:

[0055] Example 1

[0056] like Figure 1-5 As shown, the padlock device in Embodiment 1 includes a first stop 2, a push plate 3, a connecting rod 4, a latch 5, and a second stop 6.

[0057] like Figure 1-6 As shown, the first stop 2 is vertically slidable on the outside of the housing 1. Specifically, the front wall 14 has two vertically spaced grooves 11, and the back of the first stop 2 has two sets of sliding members 21, which are slidably disposed in the two grooves 11 respectively. The first stop 2 is slidably connected to the grooves 11 through the sliding members 21. The number of sliding members 21 in each set is not limited and can be one or more.

[0058] like Figure 5-7 As shown, the push plate 3 is vertically slidably disposed inside the housing 1 and connected to the first stop 2. Specifically, the push plate 3 is connected to two sets of sliding members 21. Under the action of external force, the first stop 2 and the push plate 3 move up and down synchronously along the slide groove 11. A pushing end 33 is provided on the left side of the push plate 3.

[0059] like Figure 5 , Figure 7-9 As shown, connecting rod 4 is connected to push plate 3, and connecting rod 4 has a vertical slot 42 located above push plate 3. A fixed shaft 13 is provided on the inner side of front wall 14, and fixed shaft 13 passes through slot 42. Specifically, push plate 3 and connecting rod 4 are connected in a detachable manner or integrally formed. When push plate 3 and connecting rod 4 are connected in a detachable manner, they are two independent parts. A connecting shaft 31 is provided on push plate 3, and a connecting hole 41 for connecting to the connecting shaft 31 is provided at the bottom of connecting rod 4. Slot 42 is located above connecting hole 41. When push plate 3 and connecting rod 4 are connected in an integral form, connecting rod 4 is located at the top of push plate 3. Under the action of external force, push plate 3 and connecting rod 4 move up and down synchronously.

[0060] like Figure 2 , Figure 5 and Figure 10As shown, the latch 5 is movably inserted into the latch opening 1d on the top wall 16 (i.e., the top of the housing 1). From top to bottom, the latch 53 has a limiting surface 53, a locking groove 52, and a connecting part 51. The length of the limiting surface 53 is greater than the length of the latch opening 1d, and the width of the limiting surface 53 is greater than the width of the latch opening 1d. Therefore, the limiting surface 53 can remain outside the housing 1 and prevent the latch 5 from disengaging from the latch opening 1d and falling completely into the housing 1. The connecting part 51 is disposed in the slot 42 and located above the fixed shaft 13. In the initial state, the connecting part 51 abuts against the upper inner wall of the slot 42; simultaneously, the connecting part 51 is connected to the fixed shaft 13 via a first spring 71. The locking groove 52 is specifically an elongated cylindrical groove, which can move up and down with the latch 5 and be located outside or inside the housing 1. When the locking groove 52 moves to the outside of the housing 1, a lock 9 can be installed within the locking groove 52 to limit the latch 5. When the limiting surface 53 is pulled upward by an external force, so that the locking groove 52 is located outside the housing 1, the connecting part 51 moves upward synchronously. The first spring 71 is in a stretched state and has an elastic restoring force that moves the latch 5 downward and drives the locking groove 52 back to the inside of the housing 1. The form of the connecting part 51 is not limited. It can be a limiting rod or screw extending in the front-back direction, or it can be a hook, as long as it can achieve the function of connecting with the upper end of the first spring 71.

[0061] like Figure 5 and Figure 11 As shown, the second stop 6 is horizontally slidably disposed inside the housing 1. The second stop 6 is connected to the fixed shaft 13 through the second spring 72 and abuts against the push end 33. It can be translated in the left and right direction under the push of the push end 33.

[0062] Specifically, two horizontally extending guide shafts 12 are provided at intervals on the inner side of the left wall 15. A sliding bracket 62 is provided at the top and bottom of the second stop 6, and a connecting bracket 63 is provided in the middle. The two sliding brackets 62 are slidably mounted on the two guide shafts 12 respectively, and the second spring 72 is connected between the connecting bracket 63 and the fixed shaft 13.

[0063] The second stop 6 and the pushing end 33 have several possible fits. In the first fit, the bottom right side of the second stop 6 has an inclined surface 61 that gradually moves away from the connecting rod 4 from top to bottom. The pushing end 33 is triangular in shape, with its width gradually increasing from left to right. The inclined surface 61 abuts against the pushing end 33, and the second spring 72 provides a tension force to keep the inclined surface 61 tightly against the pushing end 33. When the push plate 3 is driven upward by an external force, the upward-moving pushing end 33 applies a horizontal component force to the inclined surface 61, driving the second stop 6 to move away from the connecting rod 4 along the guide shaft 12. At the same time, the second spring 72 is further stretched and has an elastic restoring force that causes the second stop 6 to move in the opposite direction along the guide shaft 12, and applies a downward vertical component force to the pushing end 33 through the inclined surface 61. The triangular pushing end 33 can reduce the friction between the pushing end 33 and the inclined surface 61, preventing jamming or blockage. In the second type of fit, the bottom right side of the second stop 6 has an inclined groove that gradually moves away from the connecting rod 4 from top to bottom, and the inclined groove abuts against the triangular push end 33. In the third type of fit, the push end 33 has an inclined surface that gradually moves towards the guide shaft 12 from top to bottom, and the bottom right side of the second stop 6 has a triangular protrusion, with the inclined surface abutting against the protrusion. The working principles of the second and third types of fit are similar to those of the first type of fit, and will not be described in detail here.

[0064] Furthermore, both the dual-splitting hole 1a and the selection hole 1b are distributed along the sliding path of the first stop 2, and the handle operation hole 1c is distributed along the sliding path of the second stop 6. Specifically, as shown... Figure 1-5 As shown, the handle operation hole 1c, the dual-splitting hole 1a, and the selection hole 1b are arranged alternately from left to right on the front wall 14. Two sliding grooves 11 are respectively arranged below the dual-splitting hole 1a and the selection hole 1b, and two guide shafts 12 are respectively arranged directly above and directly below the handle operation hole 1c.

[0065] Combination Figure 1-12 As can be seen, the working principle of Example 1 is as follows:

[0066] In the initial state, the first stop 2 is located below the dual-splitting hole 1a and the selection hole 1b, and the second stop 6 is located to the right of the handle operation hole 1c. All three operation holes are in the open state, and the operator can perform manual operation through the three operation holes.

[0067] When the dual power supply changeover switch is in the dual-opening state, the operator pulls the limiting surface 53 upward from the outside of the housing 1, causing the locking groove 52 inside the housing 1 to move through the latch opening 1d to the outside of the housing 1. During this process, the connecting part 51 on the latch 5 drives the push plate 3 and the first stop 2 to move upward simultaneously via the connecting rod 4. The pushing end 33 moves upward with the push plate 3, pushing the second stop 6 to move to the left along the guide shaft 12. Finally, the lock 9 is used to lock the locking groove 52, limiting and fixing the locking groove 52 to the outside of the housing 1, thus completing the limiting of the latch 5, and fixing the position of the first stop 2. At this time, the first stop 2 blocks the dual-opening hole 1a and the selection hole 1b, and the second stop 6 blocks the handle operation hole 1c. All three operation holes are in the closed state, and the operator cannot perform any manual operation through the three operation holes. The dual power supply changeover switch is switched to the padlock mode.

[0068] When it is necessary to release the padlock mode, remove the lock 9 from the lock groove 52. The latch 5 will move downward under its own weight and the elastic reset action of the first spring 71. The second stop 6 will move to the right under the elastic reset action of the second spring 72. At the same time, the push end 33 will move downward, and the first stop 2 will move downward accordingly. The double split hole 1a, the selection hole 1b and the handle operation hole 1c will reopen.

[0069] As can be seen from the above, the padlock device provided in Embodiment 1 has a simple structure, is easy to assemble, and has a low cost. When using this padlock device, all operating holes are blocked after the padlock is completed, making it impossible to perform manual operation, which can effectively ensure the safety of line maintenance.

[0070] The distribution of the three operating holes on the housing 1 is not limited. For example, if the double split hole 1a and the selection hole 1b are set on the sliding path of the second stop 6, and the handle operating hole 1c is set on the sliding path of the first stop 2, the above-mentioned padlock device can still achieve the same function.

[0071] Example 2

[0072] like Figure 7 , Figure 13-14 As shown, the difference between the padlock device provided in Embodiment 2 and the padlock device provided in Embodiment 1 is that the push plate 3 is further provided with a first groove 321 and a second groove 322 arranged vertically opposite to each other, wherein the first groove 321 is located above the second groove 322, the first groove 321 is U-shaped and its opening faces upward; the second groove 322 is U-shaped and its opening faces downward; the push plate 3 portion located between the first groove 321 and the second groove 322 is defined as a plate body 323.

[0073] Furthermore, the padlock device provided in Embodiment 2 also includes a limiting member 8 disposed on the inner side of the front wall 14. In the initial state, the limiting member 8 is disposed between two sliding grooves 11. The upper end of the limiting member 8 is provided with an elastic bending portion 82, which includes a first piece 821 and a second piece 822 connected in a "<" shape. The first piece 821 and the second piece 822 have an included angle, and the outward convex surface at the connection between the first piece 821 and the second piece 822 is defined as a limiting portion 823. The limiting portion 823 is horizontally disposed and elastically abuts against the inner side of the housing 1. Specifically, the limiting portion 823 elastically abuts against the position on the inner side of the front wall 14 corresponding to the first groove 321 or the second groove 322. The elastic bending portion 82 is disposed on the vertical movement path of the first groove 321 and the second groove 322 to limit the plate 323. Furthermore, the limiting member 8 is made of a spring sheet, which should satisfy the following: when the limiting part 8 abuts against the inner side of the front wall 14, the frictional force between the two is greater than the sum of the weight of the push plate 3, the weight of the connecting rod 4, and the vertical component force applied to the pushing end 33 by the second stop 6 under the elastic reset action of the second spring 72.

[0074] Combination Figure 1 , Figure 12-16 As can be seen, the working principle of Example 2 is as follows:

[0075] In the initial state, the limiting part 823 elastically abuts against the position corresponding to the first groove 321 on the inner side of the front wall 14, that is, the limiting part 823 is located in the first groove 321, the first stop 2 is held below the double-splitting hole 1a and the selection hole 1b, and the second stop 6 is held to the right of the handle operation hole 1c. All three operation holes are in the open state, and the operator can perform manual operation through the three operation holes. When no large external force is applied, the upward movement of the push plate 3 is restricted by the limiting part 823.

[0076] When the dual power supply changeover switch is in the dual-open state, the operator pushes the first stop 2 upwards by hand, that is, applies an upward force to the push plate 3. During this process, the plate body 323 will push open the limiting part 823, so that the limiting part 823 separates from the inner side of the front wall 14 and abuts against the plate body 323, until the second groove 322 moves upwards to the position directly opposite the limiting part 823. The limiting part 823 elastically abuts against the position on the inner side of the front wall 14 corresponding to the second groove 322, that is, the limiting part 823 is located in the second groove 322. At the same time, the pushing end 33 of the push plate 3 moves upwards with the push plate 3, and the pushing end 33 pushes the second stop 6 to move to the left along the guide shaft 12. At this point, the upward pushing of the first stop 2 stops. The downward movement of the push plate 3, caused by its own weight, the weight of the connecting rod 4, and the elastic restoring force of the second spring 72, is limited by the limiting part 823. The first stop 2 remains in the cover of the double split hole 1a and the selection hole 1b, and the second stop 6 remains in the cover of the handle operation hole 1c. All three operation holes remain closed. Next, the operator pulls the latch 5 upward, causing the lock groove 52 to move through the latch opening 1d to the outside of the housing 1. The lock 9 is used to lock the lock groove 52, limiting and fixing the lock groove 52 to the outside of the housing 1, thus completing the limitation of the latch 5. At this time, the connecting part 51 is at the upper end of the slot 42, further limiting the downward movement of the connecting rod 4 and the push plate 3, ensuring that the positions of the first stop 2 and the second stop 6 are fixed. The operator cannot perform any manual operation through the three operation holes, and the dual power conversion switch switches to the padlock mode.

[0077] When it is necessary to disengage the padlock mode, remove the lock 9 from the lock groove 52. The latch 5 will move downward under its own weight and the elastic reset action of the first spring 71. Pull the first stop 2 downward by hand, that is, apply a downward force to the push plate 3. During this process, the plate 323 will push open the limiting part 823 under the combined action of the external force, the weight of the push plate 3, the weight of the connecting rod 4, and the elastic reset force of the second spring 72, so that the limiting part 823 separates from the inner wall of the front wall 14 and abuts against the plate 323, until the first groove 321 moves downward to the position directly opposite the limiting part 823. The limiting part 823 is located in the first groove 321 and abuts against the inner wall of the front wall 14 again. The first stop 2 moves down accordingly, and the double split hole 1a and the selection hole 1b reopen. At the same time, the second stop 6 will also move to the right under the elastic reset action of the second spring 72, so that the handle operation hole 1c reopens.

[0078] As can be seen from the above, the padlock device provided in Embodiment 2 not only has the advantages of simple structure and easy assembly, but is also more convenient to use. After the operator pushes the first stop 2 upward a certain distance by hand, the three operating holes can be kept closed. Then, the padlock can be completed without the need to pull the latch 5. After the padlock is completed, all operating holes are blocked and cannot be operated manually, which can effectively ensure the safety of line maintenance.

[0079] like Figure 13-14 As shown, the limiting member 8 is provided with the aforementioned elastic bending portion 82, an L-shaped clearance portion 83, and a fixing hole 81 in sequence from top to bottom. The limiting member 8 is fixed to the inner wall of the housing 1 through the fixing hole 81 and fasteners. The L-shaped clearance portion 83 is used to avoid the plate 323, thus preventing resistance to the up-and-down movement of the push plate 3. The width of the elastic bending portion 82 is smaller than the width of both the first groove 321 and the second groove 322. This arrangement ensures that when the limiting portion 823 is in the first groove 321 or the second groove 322, the limiting portion 823 elastically abuts against the inner wall of the housing 1 rather than against the portion of the push plate 3 located at the left or right edge of the groove, thereby limiting the upward or downward movement of the plate 323.

[0080] In summary, this utility model provides a simple and easy-to-assemble padlock device. The padlock device includes a first stop, a second stop, and a transmission structure between them. The operator can manually move both stops simultaneously to block all operating holes on the dual-power transfer switch, thus placing the dual-power switch in padlock mode. This prevents economic or personnel losses due to human error and effectively ensures the safety of line maintenance. When it is necessary to open the operating holes, the padlock is released, allowing the first and second stops to return to their original positions. This padlock device is simple to use and easy to operate, avoiding the problem of complex usage caused by numerous parts. It has a good effect in preventing misoperation and effectively ensures electrical safety.

[0081] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A padlock device for a dual-power transfer switch, the dual-power transfer switch comprising a housing (1), characterized in that, The padlock device includes: The first stop (2) is slidably disposed on the housing (1); A push plate (3) is slidably disposed on the housing (1) and connected to the first stop (2), and a push end (33) is provided thereon. The connecting rod (4) is connected to the push plate (3) and has a slot (42). The housing (1) has a fixed shaft (13) which passes through the slot (42). The latch (5) is movably inserted into the latch opening (1d) of the housing (1). It is provided with a limiting surface (53), a locking groove (52) and a connecting part (51) from top to bottom. The limiting surface (53) is located on the outside of the housing (1) to prevent the latch (5) from disengaging from the latch opening (1d). The connecting part (51) is disposed in the slot (42) and located above the fixed shaft (13). The connecting part (51) is connected to the fixed shaft (13) by a first spring (71). The second stop (6) is slidably disposed on the housing (1). The second stop (6) is connected to the fixed shaft (13) through the second spring (72) and abuts against the pushing end (33). It can move under the push of the pushing end (33). When the lock (9) limits and fixes the lock groove (52) to the outside of the housing (1), all the operating holes on the housing (1) are blocked by the first stop (2) and the second stop (6) respectively.

2. The padlock device for the dual power supply transfer switch according to claim 1, characterized in that, The push plate (3) is also provided with a first groove (321) and a second groove (322) arranged opposite to each other, and the push plate (3) located between the first groove (321) and the second groove (322) is a plate body (323). It also includes a limiting member (8) provided on the housing (1). The upper end of the limiting member (8) is provided with an elastic bending part (82). The elastic bending part (82) includes a first piece (821) and a second piece (822) connected together. The outer convex surface at the connection between the two is a limiting part (823). The limiting part (823) elastically abuts against the housing (1) and is used to limit the plate (323).

3. The padlock device for the dual power supply transfer switch according to claim 2, characterized in that, The width of the elastic bending portion (82) is smaller than the width of both the first groove (321) and the second groove (322).

4. The padlock device for the dual power supply transfer switch according to claim 1, characterized in that, The connecting part (51) is a limiting rod.

5. The padlock device for the dual power supply transfer switch according to claim 1, characterized in that, The second stop (6) has an inclined surface (61) that gradually moves away from the connecting rod (4) from top to bottom, and the inclined surface (61) abuts against the push end (33).

6. The padlock device for the dual power supply transfer switch according to claim 1, characterized in that, The housing (1) is provided with a vertical groove (11), and the first stop (2) is slidably connected to the groove (11) through a sliding member (21).

7. The padlock device for the dual power supply transfer switch according to claim 6, characterized in that, The push plate (3) is connected to the slider (21).

8. The padlock device for the dual power supply changeover switch according to claim 1, characterized in that, The push plate (3) and the connecting rod (4) can be detachably connected or integrally formed.

9. The padlock device for the dual power supply transfer switch according to claim 1, characterized in that, The first stop (2) is located on the outside of the housing (1), and the push plate (3), connecting rod (4) and the second stop (6) are both located on the inside of the housing (1).

10. The padlock device for the dual power supply changeover switch according to claim 9, characterized in that, The housing (1) has a horizontally extending guide shaft (12) on its inner side, and the second stop (6) is slidably disposed on the guide shaft (12).

11. The padlock device for the dual power supply transfer switch according to claim 1, characterized in that, The operating holes on the housing (1) include a split hole (1a), a selection hole (1b) and a handle operating hole (1c). The split hole (1a) and the selection hole (1b) are both distributed on the sliding path of the first stop (2), and the handle operating hole (1c) is distributed on the sliding path of the second stop (6).

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