Operating handle

Abstract

The utility model relates to circuit breaker technical field discloses an operating handle, including casing, rotating handle, guide plate, lock catch and support, wherein, guide plate is located in the casing and is driven to rotate by rotating handle, is provided with push piece on the guide plate, lock catch is rotatably connected with the inner wall of casing, and the one end of lock catch forms the cooperation department that links to each other with guide plate, and the other end of lock catch projects casing and forms the lock head part, the through -hole that exposes rotating handle is set up in the support, and one side of through -hole is provided with locking portion. This operating handle structure is simple, and it is convenient to install on circuit breaker and switchgear cabinet door uses, wherein the linkage design of guide plate and lock catch makes rotating handle only switch to open -lock stop position can open the cabinet door, opens the cabinet door and cannot operate the closing after, and only under the condition that the cabinet door is closed, rotating handle can drive circuit breaker closing and opening, can effectively prevent some misoperation, has improved the operating safety greatly.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to an operating handle. Background Technology

[0002] Circuit breakers and other switching devices inherently possess opening and closing switches. To facilitate manual operation, operating handles can be installed on the circuit breakers. Especially when the circuit breaker is installed inside a switch cabinet, the operating handle can be mounted on the cabinet door, allowing operation of the circuit breaker's opening and closing without opening the cabinet door. Furthermore, to improve safety, it is desirable that the operating handle allows the circuit breaker to freely close, open, and trip when the door is closed, while preventing closing control when the door is open.

[0003] The operating handles used in the existing circuit breakers can only control opening and closing, and cannot achieve the linkage of locking and unlocking of the cabinet door. This cannot meet the above requirements and may result in situations such as the door being able to close after being opened or the door being able to open during the opening process, posing a safety hazard. Therefore, further improvement is desired. Utility Model Content

[0004] Based on the above, the purpose of this utility model is to provide an operating handle to improve the safety and convenience of opening and closing the circuit breaker.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An operating handle for mounting on a circuit breaker in a switchgear cabinet includes a housing, a rotary handle, a guide plate, a latch, and a support, wherein:

[0007] The enclosure is mounted on the circuit breaker;

[0008] The rotary handle is located on the cover and can be switched between the unlocking position, the opening position, and the closing position.

[0009] The guide plate is located inside the housing and is driven to rotate by the rotary handle. The guide plate is equipped with a push block, which is used to control the circuit breaker to open when the rotary handle is switched to the open position, and to control the circuit breaker to close when the rotary handle is switched to the close position.

[0010] The latch is rotatably connected to the inner wall of the cover, and one end of the latch forms a mating part that is linked with the guide plate, while the other end of the latch extends out of the cover to form a lock head;

[0011] The support is fixed to the cabinet door of the switch cabinet. The support has a through hole that allows the rotating handle to protrude. A locking part is provided on one side of the through hole.

[0012] When the cabinet door is closed and the locking part is locked with the lock head, the rotating handle can be freely switched to the open and closed positions;

[0013] When the rotary handle is switched to the unlock position, the guide plate linkage part causes the lock head to disengage from the locking part, and the cabinet door can be opened freely;

[0014] When the cabinet door is opened, the mating part restricts the rotation of the guide plate, making it impossible to switch the rotary handle to the closing position.

[0015] As an alternative, the edge of the guide plate is provided with a first protrusion and a second protrusion, and the mating part is hook-shaped;

[0016] When the rotating handle is switched to the unlocking position, the mating part abuts against the first protrusion, causing the lock head to lift up;

[0017] When the cabinet door is opened, the locking part fails to limit the lock head, causing the mating part to lift up and hook onto the second protrusion.

[0018] When the cabinet door is closed and the locking part engages with the lock head to lock, the limiting function of the engaging part on the second protrusion fails.

[0019] As an alternative, a spring connects the latch and the cover, and the spring provides a restoring force to the mating part when it is raised.

[0020] As an alternative, one end of the push block is rotatably connected to the inner wall of the casing, and the other end of the push block is connected to the guide plate through a transmission structure. The push block is equipped with a linkage part for controlling the opening and closing action of the circuit breaker.

[0021] As an alternative, the transmission structure includes a pin on the guide plate and a groove on the push block, with the pin passing through the groove and able to move along the groove.

[0022] As an alternative, the linkage is a slot opened on the push block, into which the opening and closing switch is inserted.

[0023] As an alternative, the cover has an opening, the outer wall of the opening has a stop, the rotating handle is fastened to the stop, the guide plate is against the inner wall of the opening, and the rotating handle and the guide plate are fixed together by bolts.

[0024] As an optional solution, the circuit breaker is equipped with a reset button, and the housing is equipped with a reset button for triggering the reset button.

[0025] As an alternative, the support is located on the inside of the cabinet door, and a panel is provided on the outside of the cabinet door. The panel is fixed to the support by bolts.

[0026] As an optional solution, the rotary handle is equipped with an indicator arrow, and the panel is equipped with a stroke indicator to display the rotation stroke of the rotary handle. The stroke indicator is equipped with three position marks arranged in clockwise or counterclockwise order: a first position mark, a second position mark, and a third position mark.

[0027] When the indicator arrow aligns with the first gear mark, the rotary handle is in the unlock position;

[0028] When the indicator arrow aligns with the second position mark, the rotary handle is in the open position;

[0029] When the indicator arrow aligns with the third gear mark, the rotary handle is in the closed position.

[0030] The beneficial effects of this utility model are:

[0031] The operating handle has a simple structure and is easy to install on circuit breakers and switch cabinet doors. The linkage design between the guide plate and the latch means that the cabinet door can only be opened when the rotating handle is switched to the unlock position. The closing operation cannot be performed after the cabinet door is opened. Moreover, the circuit breaker can only be closed and opened when the cabinet door is closed. This can effectively prevent some misoperations and greatly improve the safety of operation. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the operating handle provided in this embodiment of the utility model being installed on the circuit breaker;

[0033] Figure 2 yes Figure 1 Exploded view;

[0034] Figure 3 This is a schematic diagram of the cooperation between the guide plate and the latch in the operating handle provided in this embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram of the push block in the operating handle provided in this embodiment of the utility model;

[0036] Figure 5 This is a schematic diagram of the operating handle being in the open position according to an embodiment of the present utility model;

[0037] Figure 6 This is a schematic diagram of the operating handle being in the unlocking position according to an embodiment of the present utility model;

[0038] Figure 7 This is a schematic diagram of the operating handle being in the closed position according to an embodiment of the present utility model;

[0039] Figure 8 This is a schematic diagram of the operating handle provided in this embodiment of the utility model failing to close the circuit when the cabinet door is opened.

[0040] In the attached image:

[0041] 1. Cover; 11. Stop; 12. Reset button;

[0042] 2. Rotate the handle; 21. Indicator arrow;

[0043] 3. Guide plate; 31. First protrusion; 32. Second protrusion; 33. Pin;

[0044] 4. Lock; 41. Fitting part; 42. Lock head; 43. Spring;

[0045] 5. Support component; 51. Through hole; 52. Locking part;

[0046] 6. Push block; 61. Slide groove; 62. Bayonet;

[0047] 7. Panel; 71. Travel indicator;

[0048] 8. Circuit breaker; 81. Opening and closing switch; 82. Reset button. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0050] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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.

[0053] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0054] Please see Figures 1 to 4 This embodiment provides an operating handle for installation on a circuit breaker 8 in a switchgear. The operating handle includes a housing 1, a rotary handle 2, a guide plate 3, a latch 4, and a support 5. The housing 1 is installed on the circuit breaker 8. The rotary handle 2 is located on the housing 1 and can switch between an unlocking position, a tripping position, and a closing position. The guide plate 3 is located inside the housing 1 and is driven to rotate by the rotary handle 2. A push block 6 is provided on the guide plate 3. The push block 6 is used to control the circuit breaker 8 to trip when the rotary handle 2 is switched to the tripping position, and to control the circuit breaker 8 to close when the rotary handle 2 is switched to the closing position. The latch 4 is rotatably connected to the inner wall of the housing 1, and one end of the latch 4 forms a mating part 41 that is linked with the guide plate 3. The other end of the latch 4 extends out of the housing 1 to form a lock head 42. The support 5 is fixed to the cabinet door of the switchgear. The support 5 has a through hole 51 that exposes the rotary handle 2, and a locking part 52 is provided on one side of the through hole 51.

[0055] When the cabinet door is closed and the locking part 52 is locked with the lock head 42, the rotating handle 2 can freely switch between the open and closed positions, such as Figure 5 and Figure 7 As shown;

[0056] When the rotating handle 2 is switched to the unlocking position, the guide plate 3 engages with the locking part 41, causing the lock head 42 to disengage from the locking part 52, allowing the cabinet door to open freely. Figure 6 As shown;

[0057] When the cabinet door is opened, the mating part 41 restricts the rotation of the guide plate 3, preventing the rotary handle 2 from switching to the closing position. Figure 8 As shown.

[0058] To achieve linkage between the guide plate 3 and the latch 4 while minimizing structural components, a clever design is needed for their linkage structure. In some embodiments, the edge of the guide plate 3 is provided with a first protrusion 31 and a second protrusion 32, and the mating part 41 is hook-shaped. See details. Figure 3 .

[0059] When the rotating handle 2 is switched to the unlocking position, the mating part 41 abuts against the first protrusion 31, causing the lock head 42 to lift up, as if... Figure 6 As shown;

[0060] When the cabinet door is opened, the locking part 52 fails to limit the locking head 42, causing the mating part 41 to lift up and hook onto the second protrusion 32, as... Figure 8 As shown;

[0061] When the cabinet door is closed and the locking part 52 engages with the lock head 42 to lock, the limiting function of the engaging part 41 on the second protrusion 32 is lost.

[0062] Furthermore, a spring 43 is connected between the latch 4 and the cover 1, and the spring 43 provides a restoring force to the mating part 41 when it is raised. In addition, the continuous restoring force provided by the spring 43 can ensure that the locking part 52 and the lock head 42 are reliably locked when the cabinet door is closed, and that the second protrusion 32 is stably hooked when the cabinet door is opened.

[0063] In some embodiments, one end of the push block 6 is rotatably connected to the inner wall of the cover 1, and the other end of the push block 6 is connected to the guide plate 3 through a transmission structure. The push block 6 is provided with a linkage part for controlling the operation of the opening and closing switch 81 of the circuit breaker 8.

[0064] Optionally, the transmission structure includes a pin 33 disposed on the guide plate 3 and a slide groove 61 opened on the push block 6. The pin 33 passes through the slide groove 61 and can move along the slide groove 61, thereby converting the rotation of the guide plate 3 into the swing of the push block 6, so that the push block 6 can drive the opening and closing switch 81 to operate.

[0065] Optionally, the linkage is a bayonet 62 located on the push block 6, into which the opening / closing switch 81 is inserted. See details. Figure 4 Two arc-shaped protrusions are provided on the side wall of the bayonet 62. The two arc-shaped protrusions clamp the opening and closing switch 81 and ensure a certain degree of flexibility.

[0066] In some embodiments, the cover 1 has an opening, and a stop 11 is provided on the outer wall of the opening. The rotating handle 2 is fastened to the stop 11, and the guide plate 3 is attached to the inner wall of the opening. The rotating handle 2 and the guide plate 3 are fixedly connected by bolts, thereby realizing the linkage between the external rotating handle 2 and the internal guide plate 3.

[0067] In some embodiments, a reset button 82 is provided on the circuit breaker 8, and a reset button 12 for triggering the reset button 82 is provided on the housing 1, thereby facilitating the reset operation of the circuit breaker 8.

[0068] In some embodiments, the support member 5 is located on the inside of the cabinet door, and a panel 7 is provided on the outside of the cabinet door. The panel 7 is fixed to the support member 5 by bolts.

[0069] Furthermore, the rotary handle 2 is provided with an indicator arrow 21, and the panel 7 is provided with a stroke mark 71 for displaying the rotation stroke of the rotary handle 2. The stroke mark 71 is provided with three first gear mark, second gear mark and third gear mark arranged in clockwise or counterclockwise order.

[0070] When the indicator arrow 21 is aligned with the first gear mark, the rotary handle 2 is in the unlock position;

[0071] When the indicator arrow 21 is aligned with the second position mark, the rotary handle 2 is in the open position;

[0072] When the indicator arrow 21 is aligned with the third gear mark, the rotary handle 2 is in the closed position.

[0073] The following provides a detailed explanation of each state.

[0074] Figure 5 The display shows the state of the operating handle when the circuit breaker 8 is in the open position. Under the action of the spring 43, the lock head 42 is limited by the locking part 52, and the cabinet door cannot be opened at this time.

[0075] Figure 6 The display shows the state of the operating handle when the cabinet door is unlocked. The first protrusion 31 of the guide plate 3 pushes the mating part 41 to overcome the force of the spring 43, causing the lock head 42 to lift up and disengage from the locking part 52. At this time, the cabinet door can be opened, and the circuit breaker 8 is in the locked-to-the-bottom state.

[0076] Figure 7 The display shows the state of the operating handle of the circuit breaker 8 during the closing process when the cabinet door is closed. Under the action of the spring 43, the lock head 42 abuts against the locking part 52, and the mating part 41 does not contact the second protrusion 32. Therefore, when the cabinet door is closed, rotating the handle 2 can drive the circuit breaker 8 to freely close, open, and trip.

[0077] Figure 8 The display shows the status of the operating handle during the process of closing the circuit breaker when the cabinet door is opened. Under the action of the spring 43, the lock head 42 is lowered to the lowest point due to the lack of the locking part 52, and the mating part 41 is raised to the highest point. At this time, if the guide plate 3 is rotated, the mating part 41 will hook the second protrusion 32, preventing the guide plate 3 from rotating further. Therefore, when the cabinet door is open, the rotating handle 2 cannot be switched to the closing position, which better ensures personal safety.

[0078] In summary, this operating handle has the following advantages:

[0079] 1) The structure is simple and easy to install on circuit breakers and switch cabinet doors, making it highly adaptable;

[0080] 2) High safety: the cabinet door can only be opened when the load is fully engaged, and the circuit breaker cannot be operated after it is opened, thus avoiding accidental operation;

[0081] 3) The precise structural fit reduces the failure rate and avoids situations such as the door opening before the buckle reaches the bottom or the switch being closed before the cabinet door is fully closed, making the operation more accurate.

[0082] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An operating handle for mounting on a circuit breaker in a switchgear, characterized in that, The operating handle includes a cover, a rotating handle, a guide plate, a latch, and a support, wherein: The housing is mounted on the circuit breaker; The rotary handle is mounted on the cover and can be switched between the unlocking position, the opening position, and the closing position. The guide plate is located inside the housing and is driven to rotate by the rotary handle. A push block is provided on the guide plate. The push block is used to control the circuit breaker to open when the rotary handle is switched to the open position, and to control the circuit breaker to close when the rotary handle is switched to the close position. The latch is rotatably connected to the inner wall of the cover, and one end of the latch forms a mating part that is linked with the guide plate, while the other end of the latch extends out of the cover to form a lock head; The support is fixed to the cabinet door of the switch cabinet. The support has a through hole that exposes the rotary handle. A locking part is provided on one side of the through hole. When the cabinet door is closed and the locking part is locked with the lock head, the rotary handle can be freely switched to the open position and the closed position; When the rotary handle is switched to the unlocking position, the guide plate is linked to the mating part, causing the lock head to disengage from the locking part, and the cabinet door can be opened freely; When the cabinet door is opened, the mating part restricts the rotation of the guide plate, so that the rotating handle cannot be switched to the closing position.

2. The operating handle according to claim 1, characterized in that, The guide plate has a first protrusion and a second protrusion on its edge, and the mating part is hook-shaped; When the rotary handle is switched to the unlocking position, the mating part abuts against the first protrusion, causing the lock head to lift up; When the cabinet door is opened, the locking part fails to limit the lock head, causing the mating part to lift up and hook onto the second protrusion. When the cabinet door is closed and the locking part engages with the lock head to lock, the limiting function of the engaging part on the second protrusion is lost.

3. The operating handle according to claim 2, characterized in that, A spring is connected between the latch and the cover, and the spring provides a restoring force to the mating part when it is raised.

4. The operating handle according to claim 1, characterized in that, One end of the push block is rotatably connected to the inner wall of the cover, and the other end of the push block is connected to the guide plate through a transmission structure. The push block is provided with a linkage part for controlling the opening and closing action of the circuit breaker.

5. The operating handle according to claim 4, characterized in that, The transmission structure includes a pin on the guide plate and a slide groove on the push block. The pin passes through the slide groove and can move along the slide groove.

6. The operating handle according to claim 4, characterized in that, The linkage is a slot opened on the push block, and the opening and closing switch is inserted into the slot.

7. The operating handle according to claim 1, characterized in that, The cover has an opening, and a stop is provided on the outer wall of the opening. The rotating handle is fastened to the stop, and the guide plate is attached to the inner wall of the opening. The rotating handle and the guide plate are fixedly connected by bolts.

8. The operating handle according to claim 1, characterized in that, The circuit breaker is equipped with a reset button, and the housing is equipped with a reset button for triggering the reset button.

9. The operating handle according to claim 1, characterized in that, The support member is located on the inside of the cabinet door, and a panel is provided on the outside of the cabinet door. The panel is fixed to the support member by bolts.

10. The operating handle according to claim 9, characterized in that, The rotary handle is provided with an indicator arrow, and the panel is provided with a stroke mark for displaying the rotation stroke of the rotary handle. The stroke mark is provided with three position marks, namely a first position mark, a second position mark, and a third position mark, arranged in clockwise or counterclockwise order. When the indicator arrow is aligned with the first gear position mark, the rotary handle is in the unlocking position; When the indicator arrow is aligned with the second gear mark, the rotary handle is in the open gear position; When the indicator arrow is aligned with the third gear mark, the rotary handle is in the closing gear position.

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