A manual operating device for a dual power transfer switch

Abstract

The application relates to the field of double power transfer switch structures, and discloses a manual operating device of a double power transfer switch, which comprises a shell and two sets of manual operating mechanisms, the manual operating mechanism comprises a micro switch, a push plate, a rotating shaft and a push rod, the push plate is slidably arranged on the shell, the micro switch is located on the opposite sides of the two push plates, the rotating shaft is rotationally arranged on the shell and perpendicular to the moving direction of the push plate, a plug-in through hole is formed in the push plate, the push rod is connected to the end of the rotating shaft facing the push plate, one end of the push rod is plugged into the plug-in through hole, a self-locking assembly is arranged on the shell, the self-locking assembly comprises a guide sleeve, a lock pin and a first elastic piece, the guide sleeve is arranged on the shell, the lock pin is arranged in a stepped shaft structure, and the first elastic piece is located in the guide sleeve and abuts against the lock pin; a plug-in slot is formed in the push plate, and the head of the lock pin is plugged into the plug-in slot in a matched mode. The application has the effect of improving the stability of the manual operating device.

Description

Technical Field

[0001] This application relates to the field of dual power transfer switch structures, and in particular to a manual operating device for a dual power transfer switch. Background Technology

[0002] Dual power transfer switches are core devices ensuring continuous power supply and are widely used in critical locations such as hospitals, data centers, and airports where power reliability is extremely important. Their core value lies in their ability to quickly switch to a backup power source when the primary power source fails, preventing safety accidents and significant economic losses caused by power outages. The manual operating mechanism, as the emergency control core of the dual power transfer switch, serves as the last line of defense for accurate power state switching in scenarios such as automatic switching system failure or equipment maintenance. Its structural simplicity and ease of operation directly determine the efficiency and reliability of the emergency response.

[0003] In the prior art, Chinese Patent Publication No. CN222146029U discloses a manual operating mechanism for a dual power supply changeover switch. The dual power supply changeover switch is provided with a common manual operating rotating mechanism connected to the common power supply and a backup manual operating mechanism connected to the backup power supply. Both the common manual operating rotating mechanism and the backup manual operating mechanism are provided with push plates. The manual operating mechanism includes a rotating shaft and a connecting rod. One end of the connecting rod is provided with a connecting rod through hole that is rotatably driven by the rotating shaft. The push plate is provided with a push plate through hole that is engaged with the connecting rod. One end of the rotating shaft is provided with a rotating groove, and the other end is connected to the connecting rod through hole. The end of the connecting rod away from the rotating shaft is located in the push plate through hole.

[0004] However, the shaft of the manual operating mechanism of the aforementioned dual power transfer switch is susceptible to rotation due to vibration, external force, or other factors, which can cause the switch to unexpectedly lose its closed state, posing a power supply safety hazard. This not only affects the accuracy and stability of power switching but also significantly increases the error rate in emergency scenarios. Utility Model Content

[0005] To improve the stability of manual operating devices, this application provides a manual operating device with a dual power transfer switch.

[0006] The manual operating device for a dual power transfer switch provided in this application adopts the following technical solution: A manual operating device for a dual-power transfer switch includes a housing and two sets of manual operating mechanisms symmetrically arranged. Each manual operating mechanism includes a micro switch, a push plate, a rotating shaft, and a push rod. The push plate is slidably mounted on the housing along the distribution direction of the two sets of manual operating mechanisms. The micro switch is located on opposite sides of the two push plates. The rotating shaft is rotatably mounted on the housing perpendicular to the moving direction of the push plate. The push plate has a through-hole for insertion. The push rod is connected to the end of the rotating shaft facing the push plate, and one end of the push rod is inserted into the through-hole. A self-locking assembly is provided on the housing on the side of the push plate near the micro switch. The self-locking assembly includes a guide sleeve, a locking pin, and a first elastic element. The guide sleeve is mounted on the housing. The locking pin has a stepped shaft structure with a hemispherical head and an annular tail. The locking pin is slidably mounted inside the guide sleeve. The first elastic element is located inside the guide sleeve and abuts against the locking pin guide sleeve. The push plate has a slot for insertion, and the head of the locking pin is inserted into the slot.

[0007] By adopting the above technical solution, when using the manual operating device to close the main power supply or the backup power supply, rotating the shaft drives the push rod to rotate. Since one end of the push rod is inserted into the insertion hole of the push plate, the push rod rotates around the shaft, thereby pushing the inner wall of the insertion hole, causing the push plate to slide on the housing along the distribution direction of the two sets of manual operating mechanisms. When the push plate slides to the closed position, the self-locking component takes effect. Under the action of the first elastic element, the locking pin slides in the guide sleeve, and its head extends out of the guide sleeve and inserts into the insertion groove of the push plate, realizing the self-locking of the closed position. This structure effectively reduces the risk of the shaft rotating due to vibration, external force, etc., causing the closed state to accidentally disengage, improves the stability of the manual operating device, improves the accuracy and stability of power switching, reduces the operation error rate in emergency scenarios, and reduces potential power supply safety hazards.

[0008] Optionally, a metal sheet is provided inside the insertion slot.

[0009] By adopting the above technical solution, when the locking pin head is inserted into the plug slot, the locking pin will make a crisp sound when it strikes the metal plate, indicating to the operator that the shaft has been turned to the closed position. There is no need to excessively rotate the shaft, which further improves the accuracy and stability of power switching.

[0010] Optionally, a knob may be detachably provided on the end of the shaft extending out of the housing.

[0011] By adopting the above technical solution, the existing technology relies on an external hex wrench, which is prone to problems such as wrench loss or mismatch in emergency scenarios, resulting in delays in switching actions. However, a knob can be detachably installed on the end of the shaft extending out of the housing, which makes it convenient for operators to rotate the shaft and improves the convenience of manual operation device.

[0012] Optionally, a rotating wheel is rotatably sleeved on the push rod, the rotating wheel is located inside the insertion hole, and the rotating side wall of the rotating wheel is in contact with the inner side wall of the insertion hole.

[0013] By adopting the above technical solution, a rotating wheel is rotatably sleeved on the push rod and positioned inside the insertion hole, with the rotating side wall of the wheel abutting against the inner side wall of the insertion hole. This transforms the sliding friction between the push rod and the push plate into rolling friction, reducing frictional force, making the operation smoother, reducing energy loss during operation, and improving the operating efficiency and service life of the manual operating device.

[0014] Optionally, the push rod is connected to a collar near the end of the rotating shaft. The inner ring of the collar is irregularly shaped, and the outer ring of the end of the rotating shaft is irregularly shaped to fit into the collar.

[0015] By adopting the above technical solution, in the manual operating device of the dual power transfer switch, the push rod is connected to the irregular inner ring collar near the end of the rotating shaft, and the outer ring collar at the end of the rotating shaft is irregularly matched with it, realizing a reliable connection between the push rod and the rotating shaft, avoiding slippage when the two rotate relative to each other, improving the stability and accuracy of power transmission of the manual operating device, and thus ensuring the precision of power switching operation.

[0016] Optionally, an indicator rod is rotatably mounted on the housing. The indicator rod is connected to the status indicator of the dual power supply switch. A drive gear is sleeved on the indicator rod. Several toothed grooves are formed on the push plate along its sliding direction. The drive gear is inserted into the toothed grooves and rotatably meshes with the toothed grooves.

[0017] By adopting the above technical solution, the sliding of the push plate can drive the drive gear to rotate, thereby causing the indicator rod to rotate. The status of the dual power supply changeover switch can be displayed intuitively through the status indicator, making it easy for operators to understand the switch status in a timely manner.

[0018] Optionally, the drive gear is an incomplete gear, and a positioning component is provided on the housing. The positioning component includes a drive rod, a ratchet tip, and a second elastic element. One drive rod is provided for each set of manual operating mechanisms. The two drive rods are arranged crosswise, and the drive rods are rotatably mounted on the housing around the intersection point. The ratchet tip is located on the side wall of the drive rod and abuts against the outer ring side wall of the incomplete gear. The second elastic element is connected to the opposite side walls of the two drive rods.

[0019] By adopting the above technical solution, when operating the manual operating mechanism, the push plate slides accordingly, and the toothed grooves on the push plate drive the drive gear to rotate. Since the drive gear is an incomplete gear, and the ratchet tip of the positioning component abuts against the outer ring sidewall of the incomplete gear, when the push plate slides and causes the drive gear to rotate, the ratchet tip will engage with the tooth tip groove of the incomplete gear under the action of the second elastic element, thus achieving a positioning function. This prevents the drive gear from rotating arbitrarily, improves the accuracy and stability of the status indication of the manual operating device of the dual power transfer switch, ensures accurate indication of the dual power transfer switch status, avoids status indication errors due to inaccurate rotation of the drive gear, and improves the reliability and safety of operation.

[0020] Optionally, the drive lever includes a drive portion and a manual shift portion, with the ratchet tip disposed on the drive portion and the manual shift portion extending out of the housing.

[0021] By adopting the above technical solution, the ratchet tip can be manually disengaged from the tooth tip groove of the drive gear by the manual operation of the hand lever, which facilitates manual intervention and adjustment of the rotation state of the drive gear, improves the flexibility and controllability of operation, and can better cope with different usage scenarios and emergencies.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. When using the manual operating device to close the main power supply or the backup power supply, rotating the shaft drives the push rod to rotate. Since one end of the push rod is inserted into the insertion hole of the push plate, the push rod rotates around the shaft, thereby pushing the inner wall of the insertion hole, causing the push plate to slide on the housing along the distribution direction of the two sets of manual operating mechanisms. When the push plate slides to the closed position, the self-locking component takes effect. Under the action of the first elastic element, the locking pin slides in the guide sleeve, and its head extends out of the guide sleeve and inserts into the insertion slot of the push plate, realizing the self-locking of the closed position. This structure effectively reduces the risk of the shaft rotating due to vibration, external force, etc., causing the closed position to accidentally disengage, improves the stability of the manual operating device, improves the accuracy and stability of power switching, reduces the operation error rate in emergency scenarios, and reduces potential power supply safety hazards. 2. When the locking pin head is inserted into the plug slot, the locking pin will make a crisp sound when it strikes the metal piece, indicating to the operator that the shaft has been turned to the closed position. There is no need to rotate the shaft excessively, which further improves the accuracy and stability of power switching. 3. Existing technology relies on an external hex wrench, which can easily lead to problems such as lost wrench or mismatch in emergency situations, resulting in delays in switching actions. However, a knob can be detachably installed on the end of the shaft that extends out of the housing, which makes it easier for operators to rotate the shaft and improves the convenience of manual operation. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is an exploded view showing the connection relationship between the rotating shaft, push rod, and snap ring in the embodiments of this application.

[0025] Figure 3 This is a cross-sectional view showing the internal structure of the guide sleeve in the embodiments of this application.

[0026] Figure 4 This is a schematic diagram illustrating the positional relationship between the self-locking component, the push plate, and the metal sheet in the embodiments of this application.

[0027] Figure 5 This is a schematic diagram illustrating the connection relationship between the drive rod, the ratchet tip, and the second elastic element in the embodiments of this application.

[0028] Explanation of reference numerals in the attached figures: 1. Housing; 2. Manual operating mechanism; 21. Micro switch; 22. Push plate; 221. Insertion through hole; 222. Insertion slot; 223. Gear groove; 23. Rotating shaft; 231. Snap ring; 24. Push rod; 241. Collar; 3. Self-locking assembly; 31. Guide sleeve; 32. Locking pin; 33. First elastic element; 4. Knob; 5. Rotating wheel; 6. Metal plate; 7. Indicator rod; 71. Drive gear; 711. Incomplete gear; 8. Positioning assembly; 81. Drive rod; 811. Drive part; 812. Manual lever part; 82. Racket tip; 83. Second elastic element; 9. Limiting post. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0030] This application discloses a manual operation device for a dual power supply changeover switch.

[0031] Reference Figure 1 A manual operating device for a dual-power transfer switch includes a housing 1 and two sets of manual operating mechanisms 2, which are symmetrically arranged. Each manual operating mechanism 2 includes a micro switch 21, a push plate 22, a rotating shaft 23, and a push rod 24. The push plate 22 is slidably mounted on the housing 1 along the distribution direction of the two sets of manual operating mechanisms 2. The micro switch 21 is a commercially available on / off device that connects to the corresponding power supply and is located on the opposite sides of the two push plates 22, mounted on the housing 1. The rotating shaft 23 is rotatably mounted on the housing 1 perpendicular to the moving direction of the push plate 22. The push plate 22 has an elongated insertion hole 221. The push rod 24 is connected to the end of the rotating shaft 23 facing the push plate 22, and one end of the push rod 24 is inserted into the insertion hole 221. A self-locking assembly 3 is provided on the housing 1 on the side of the push plate 22 near the micro switch 21.

[0032] Reference Figure 1 One of the two sets of manual operating mechanisms 2 corresponds to the main power supply, and its micro switch 21 is electrically connected to the main power supply; the other set corresponds to the backup power supply, and its micro switch 21 is electrically connected to the backup power supply. When the main power supply is needed, the rotation of the shaft 23 at the main power supply drives the push rod 24 to move in the insertion hole 221, thereby pushing the push plate 22 to slide. When the push plate 22 moves to connect with the self-locking component 3, the push plate 22 contacts the actuating spring of the micro switch 21 on that side, so that the moving contact on the actuating spring contacts the fixed contact on the micro switch 21, realizing the closed and energized state; otherwise, the energized state is realized, thereby changing the power supply state. The operation of the backup power supply is the same as that of the main power supply, and will not be described in detail here.

[0033] Reference Figure 1 and Figure 2 A knob 4 is fitted onto the end of the rotating shaft 23 extending out of the housing 1 and is locked in place by a pin. The surface of the knob 4 is designed with anti-slip texture. The push rod 24 is designed with a right-angle bend, and a collar 241 is integrally formed and connected to the end of the push rod 24 near the rotating shaft 23. The inner ring of the collar 241 is irregularly shaped; in this embodiment, it is elliptical. The outer ring of the end of the rotating shaft 23 is designed with an elliptical structure that fits into the collar 241. A retaining spring 231 is fitted onto the rotating shaft 23, which restricts and positions the collar 241 on the rotating shaft 23. A rotating wheel 5 is rotatably fitted onto the push rod 24. The rotating wheel 5 is located inside the insertion hole 221, and the rotating side wall of the rotating wheel 5 abuts against the inner side wall of the insertion hole 221.

[0034] Reference Figure 1 , Figure 3 and Figure 4 The self-locking assembly 3 includes a guide sleeve 31, a locking pin 32, and a first elastic element 33. The guide sleeve 31 is fixedly mounted on the housing 1. The locking pin 32 is integrally formed with a stepped shaft structure, its head being hemispherical and its tail being annular. The locking pin 32 is slidably disposed within the guide sleeve 31. In this embodiment, the first elastic element 33 is a spring, which is located within the guide sleeve 31 and abuts against the tail of the locking pin 32 and the inner bottom wall of the guide sleeve 31. The push plate 22 has an insertion groove 222, and the head of the locking pin 32 extends out of the guide sleeve 31 to engage with the insertion groove 222. A metal piece 6 is also disposed within the insertion groove 222, and the metal piece 6 is fixed to the side wall of the push plate 22 away from the locking pin 32 by bolts.

[0035] Reference Figure 1 , Figure 3 and Figure 4The operator manually rotates knob 4 to rotate shaft 23. Shaft 23 drives rod to rotate around its axial direction, causing the side wall of wheel 5 to push against the inner wall of insertion hole 221, thereby moving push plate 22. When push plate 22 moves to abut micro switch 21, locking pin 32, under the action of spring, inserts into insertion slot 222 and strikes metal piece 6, producing a crisp sound, indicating to the operator that shaft 23 has reached the closing position. When it is necessary to open the circuit, a certain external force is used to overcome the spring force, causing locking pin 32 to disengage from insertion slot 222, and push plate 22 can then leave the closing position under the action of push rod 24.

[0036] Reference Figure 1 To synchronize the status indicator of the dual power transfer switch with the rotation adjustment of the rotating shaft 23, an indicator rod 7 connected to the status indicator of the dual power transfer switch is rotatably mounted on the housing 1. The length direction of the indicator rod 7 is perpendicular to the sliding direction of the push plate 22. A drive gear 71 is fixedly sleeved on the indicator rod 7 near the push plate 22. The drive gear 71 is an incomplete gear 711. The push plate 22 has several toothed grooves 223 along its own sliding direction, and the drive gear 71 is inserted into the toothed grooves 223, rotatably meshing with the toothed grooves 223.

[0037] Reference Figure 1 When the rotating shaft 23 rotates, the push plate 22 is driven to move by the rotating rod. This not only enables contact and separation with the micro switch 21 to achieve the purpose of closing and disconnecting the power supply, but also drives the tooth groove 223 to move by the movement of the push plate 22, thereby driving the incomplete gear 711 to rotate and realize the corresponding switching of the status indicator.

[0038] Reference Figure 1 and Figure 5 To enhance the stability of the rotating shaft 23 when the power is off, a positioning component 8 is provided on the housing 1. The positioning component 8 includes a drive rod 81, a ratchet tip 82, and a second elastic element 83. One drive rod 81 is provided for each set of manual operating mechanisms 2. The two drive rods 81 are arranged crosswise and rotate around the intersection point on the housing 1. The drive rod 81 includes an integrally formed drive part 811 and a manual lever part 812. The ratchet tip 82 is fixedly mounted on the side wall of the drive part 811 and abuts against the outer ring side wall of the incomplete gear 711. A limiting post 9 is fixedly provided on the opposite sides of the two drive rods 81 on the housing 1. The manual lever part 812 extends out of the housing 1. In this embodiment, the second elastic element 83 is a spring, which is fixedly connected to the opposite side walls of the two drive parts 811.

[0039] Reference Figure 1 and Figure 5When the operator manually rotates knob 4, causing shaft 23 to rotate, shaft 23 drives the rotating rod to rotate around the axis of shaft 23. This causes the side wall of rotating wheel 5 to push the inner side wall of insertion hole 221, thereby moving push plate 22. When push plate 22 moves to the point where the tip of the end tooth of incomplete gear 711 engages with the end tooth groove 223 near shaft 23, ratchet tip 82 will engage in the end tooth tip clamping groove of incomplete gear 711 under the action of spring. This ensures that the indicator rod 7 accurately indicates that the circuit is open. When it is necessary to release the locked state, by overcoming the elastic force of the second elastic element 83, the two hand lever parts 812 are brought closer together. The ratchet tip 82 disengages from the end tooth tip clamping groove of incomplete gear 711, allowing incomplete gear 711 to rotate in the opposite direction. Push plate 22 can then leave the open position under the action of push rod 24.

[0040] The implementation principle of the manual operation device of the dual power transfer switch in this embodiment is as follows: By setting a self-locking component 3, when the push plate 22 is closed, the locking pin 32 inserts into the plug slot 222 to achieve self-locking, thus improving the stability of the manual operation device. A metal piece 6 is set inside the plug slot 222. Utilizing the brittle elasticity of the metal piece 6, it not only provides an audible prompt to the operator for accurate insertion of the locking pin 32, but also buffers the impact force of the locking pin 32 insertion, reducing component damage. A detachable knob 4 is set at the end of the rotating shaft 23, which can be removed when manual operation is not required to prevent accidental operation. A rotating wheel 5 is fitted on the push rod 24, reducing friction between the push rod 24 and the inner wall of the plug hole 221, making the push rod 24 move more smoothly and improving operational flexibility. The push rod 24 and the rotating shaft 23 are connected by a special-shaped collar 241, ensuring the reliability of the connection and improving power transmission efficiency. An indicator rod 7 and a positioning component 8 are set. The indicator rod 7 can intuitively display the status of the dual power transfer switch, and the positioning component 8 can position the drive gear 71, ensuring accurate display by the indicator rod 7. These designs further enhance the performance and ease of operation of the device, significantly improving the reliability and accuracy of manual operation of the dual power transfer switch compared to existing technologies, thus meeting the needs of critical locations with extremely high power supply reliability requirements.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A manual operating device for a dual-power transfer switch, comprising a housing (1) and two sets of manual operating mechanisms (2), the two sets of manual operating mechanisms (2) being symmetrically arranged, each manual operating mechanism (2) comprising a micro switch (21), a push plate (22), a rotating shaft (23), and a push rod (24), wherein the push plate (22) is slidably disposed on the housing (1) along the distribution direction of the two sets of manual operating mechanisms (2), the micro switch (21) is located on the opposite sides of the two push plates (22), the rotating shaft (23) is rotatably disposed on the housing (1) perpendicular to the moving direction of the push plate (22), the push plate (22) is provided with a through hole (221), and the push rod (24) is connected to the end of the rotating shaft (23) facing the push plate (22), one end of the push rod (24) being inserted into the through hole (221), characterized in that, A self-locking assembly (3) is provided on the side of the push plate (22) near the micro switch (21) on the housing (1). The self-locking assembly (3) includes a guide sleeve (31), a locking pin (32) and a first elastic element (33). The guide sleeve (31) is provided on the housing (1). The locking pin (32) is provided with a stepped shaft structure, with a hemispherical head and an annular tail. The locking pin (32) is slidably disposed in the guide sleeve (31). The first elastic element (33) is located in the guide sleeve (31) and abuts against the locking pin (32) and the guide sleeve (31). The push plate (22) is provided with a insertion groove (222). The head of the locking pin (32) is inserted into the insertion groove (222).

2. The manual operation device for a dual power supply changeover switch according to claim 1, characterized in that, A metal sheet (6) is provided inside the insertion slot (222).

3. The manual operation device for a dual power supply changeover switch according to claim 1, characterized in that, A knob (4) is detachably provided on the end of the shaft (23) extending out of the housing (1).

4. The manual operation device for a dual power supply changeover switch according to claim 1, characterized in that, A rotating wheel (5) is rotatably sleeved on the push rod (24). The rotating wheel (5) is located inside the insertion hole (221). The rotating side wall of the rotating wheel (5) is in contact with the inner side wall of the insertion hole (221).

5. The manual operation device for a dual power supply changeover switch according to claim 1, characterized in that, The push rod (24) is connected to a collar (241) near the end of the rotating shaft (23). The inner ring of the collar (241) is irregularly shaped, and the outer ring of the end of the rotating shaft (23) is irregularly shaped to be inserted into the collar (241).

6. The manual operation device for a dual power supply changeover switch according to claim 1, characterized in that, An indicator rod (7) is rotatably mounted on the housing (1). The indicator rod (7) is connected to the status indicator of the dual power supply switch. A drive gear (71) is sleeved on the indicator rod (7). A plurality of toothed grooves (223) are opened on the push plate (22) along its sliding direction. The drive gear (71) is inserted into the toothed grooves (223) and rotates and meshes with the plurality of toothed grooves (223).

7. The manual operation device for a dual power supply changeover switch according to claim 6, characterized in that, The drive gear (71) is an incomplete gear (711). A positioning component (8) is provided on the housing (1). The positioning component (8) includes a drive rod (81), a ratchet tip (82), and a second elastic element (83). Each set of manual operating mechanisms (2) is provided with one drive rod (81). The two drive rods (81) are arranged crosswise, and the drive rods (81) are rotatably arranged on the housing (1) around the intersection point. The ratchet tip (82) is arranged on the side wall of the drive rod (81) and abuts against the outer ring side wall of the incomplete gear (711). The second elastic element (83) is connected to the opposite side walls of the two drive rods (81).

8. The manual operation device for a dual power supply changeover switch according to claim 7, characterized in that, The drive lever (81) includes a drive part (811) and a manual lever part (812), the ratchet tip (82) is disposed on the drive part (811), and the manual lever part (812) extends out of the housing (1).

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