Tripping mechanism with self-resetting function and rotary switch
The self-resetting of the trip unit is achieved by using a motor-driven gear transmission assembly, which solves the problems of resource waste and increased operating torque during the trip unit reset process, and provides an automated and convenient reset solution.
Patent Information
- Application Number
- CN202423182738.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing trip units require manual operation or linkage with the operating mechanism during the reset process, resulting in resource waste and increased operating torque, which affects the operating feel.
A motor-driven gear transmission assembly is used to transmit the motor's motion to the reset block, thereby achieving the self-reset of the trip unit and avoiding linkage with the operating mechanism.
It enables remote automatic reset of the trip unit, saving manpower and time, while not increasing the operating torque of the switching equipment and improving the operating feel.
Smart Images
Figure CN223680031U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of low-voltage electrical apparatuses, in particular to a tripping mechanism with self-resetting and a rotary switch. BACKGROUND
[0002] A tripping device is usually used as a trigger device in a switch device with automatic opening function. When an overload, short circuit, leakage or the like occurs in a circuit, the tripping device automatically opens the circuit to prevent damage to the device or cause a safety accident.
[0003] After the tripping device is actuated, it needs to be reset to ensure the normal use of the automatic opening function of the switch device in the subsequent use process. In order to save human resources and time, the prior art usually adopts a linkage form to link the tripping device and the operating mechanism of the switch device, so as to drive the tripping device to reset during the operation of the operating mechanism. However, this structure is relatively complex and also increases the operating torque of the switch device, affecting the operation feeling. CONTENT OF THE UTILITY MODEL
[0004] The present application aims at the deficiencies in the prior art, and provides a tripping mechanism with self-resetting and a rotary switch, which is simple in structure and does not need to be linked with the operating mechanism to reset the tripping device.
[0005] To achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows:
[0006] In one aspect of the embodiments of the present application, a tripping mechanism with self-resetting is provided, which comprises a motor, a gear transmission assembly, a reset block and a tripping device. The input end of the gear transmission assembly is drivingly connected with the output shaft of the motor, and the output end of the gear transmission assembly is connected with the reset block. The reset block can press the tripping device to reset under the driving of the gear transmission assembly.
[0007] Optionally, the output shaft of the motor rotates around a first direction, the gear transmission assembly drives the reset block to press the tripping device to reset, the output shaft of the motor rotates around a second direction opposite to the first direction, and the gear transmission assembly drives the reset block to move away from the tripping device.
[0008] Optionally, the center line of the rotation of the output shaft of the motor and the reset direction of the tripping device form a preset included angle, wherein 0°< the preset included angle≤90°.
[0009] Optionally, the gear transmission assembly is used to convert the rotary motion of the output shaft of the motor into the linear motion of the reset block, and the linear motion direction of the reset block is the same as the reset direction of the tripping device.
[0010] Optionally, the gear transmission assembly comprises a first rotating gear and a spur gear, the first rotating gear is drivingly connected with the output shaft of the motor, the first rotating gear is engaged with the spur gear, the reset block is connected with the spur gear, and an axis of the first rotating gear is perpendicular to the reset direction of the tripping device.
[0011] Optionally, the first rotating gear is fixed on the output shaft of the motor, and the first rotating gear is coaxially arranged on the output shaft.
[0012] Optionally, the gear transmission assembly is used to convert the rotating motion of the output shaft of the motor into the rotating motion of the reset block, and the reset block continues to rotate to press the tripping device to reset after abutting against the tripping device.
[0013] Optionally, the gear transmission assembly comprises a second rotating gear, the second rotating gear is drivingly connected with the output shaft of the motor, an axis of the second rotating gear is perpendicular to the reset direction of the tripping device, the reset block is connected with the second rotating gear, the reset block comprises a cam portion, an axis of the cam portion coincides with the axis of the second rotating gear, and the cam portion is used to press the tripping device to reset.
[0014] Optionally, the gear transmission assembly further comprises a third rotating gear engaged with the second rotating gear, the third rotating gear is fixed on the output shaft of the motor, an axis of the third rotating gear coincides with the axis of the output shaft, and the axis of the third rotating gear is parallel to the axis of the second rotating gear.
[0015] In another aspect of the embodiments of the present application, a rotary switch is provided, comprising a housing, an operating mechanism arranged in the housing, a contact unit, and the self-resetting tripping mechanism according to any one of the above, the operating mechanism is used to drive the contact unit to open and close, and the self-resetting tripping mechanism drives the contact unit to open through the tripping device.
[0016] The beneficial effects of the present application include:
[0017] The present application provides a self-resetting tripping mechanism, comprising a motor, a gear transmission assembly, a reset block, and a tripping device, an input end of the gear transmission assembly is drivingly connected with an output shaft of the motor, an output end of the gear transmission assembly is connected with the reset block, and the reset block can press the tripping device to reset under the driving of the gear transmission assembly. The self-resetting tripping mechanism is driven by the motor, the motion of the motor is transmitted to the reset block through the gear transmission assembly, and the reset block is used to press the tripping device to reset, which can be remotely controlled, without the need for staff to be on site, saving human resources and operation time. At the same time, the self-resetting tripping mechanism has a simple structure, does not need to be linked with the operating mechanism, and can realize the reset of the tripping device, thus, does not increase the operating torque of the switch device, and does not affect the operation feeling. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.
[0019] Figure 1 Structure diagram of the self-resetting tripping mechanism provided by the embodiments of the present application;
[0020] Figure 2 Structure diagram of the self-resetting tripping mechanism provided by the embodiments of the present application;
[0021] Figure 3 Structure diagram of the rotary switch provided by the embodiments of the present application.
[0022] Icon: 100 - self-resetting tripping mechanism; 110 - motor; 111 - output shaft; 120 - gear transmission assembly; 121 - first rotary gear; 122 - straight gear; 123 - second rotary gear; 124 - third rotary gear; 130 - reset block; 131 - cam portion; 132 - rotating shaft; 140 - tripping device; 141 - reset structure; 200 - rotary switch; 210 - housing; 220 - contact unit. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. It should be noted that the various features in the embodiments of the present application can be combined with each other without conflict, and the combined embodiments are still within the protection scope of the present application.
[0025] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 mechanical connection or an electrical 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 application based on the specific circumstances.
[0028] Trip units are typically used as triggering devices in switchgear with automatic disconnection functions. When overload, short circuit, or leakage occurs in the circuit, the trip unit automatically disconnects the circuit to prevent equipment damage or safety accidents. After tripping, the trip unit needs to be reset to ensure the normal operation of the automatic tripping function of the switchgear in subsequent use. Currently, there are two main methods for trip unit reset: one is to manually press the reset button after remote disconnection, which wastes manpower and time; the other is to use a linkage to link the trip unit with the operating mechanism of the switchgear, so that the trip unit is reset during the operation of the operating mechanism. This method saves manpower and time, but the structure is complex and it increases the operating torque of the switchgear, affecting the operating feel.
[0029] To address the aforementioned technical problems, one aspect of the embodiments of this application is described below. Figure 1 A self-resetting tripping mechanism 100 is provided to control the contact unit to open in the event of a power distribution system fault, thereby causing the switchgear to trip and the power distribution system to disconnect.
[0030] The self-resetting tripping mechanism 100 comprises a motor 110, a gear transmission assembly 120, a reset block 130 and a tripper 140. The input end of the gear transmission assembly 120 is drivingly connected with the output shaft 111 of the motor 110, and the output end of the gear transmission assembly 120 is connected with the reset block 130. The motor 110 rotates to drive the gear transmission assembly 120 to move, and the gear transmission assembly 120 transmits the movement of the motor 110 to the reset block 130 and drives the reset block 130 to move. The reset block 130 presses the tripper 140 during the movement, so that the tripper 140 is reset.
[0031] The self-resetting tripping mechanism 100 described above is driven by the motor 110, transmits the movement of the motor 110 to the reset block 130 through the gear transmission assembly 120, and resets the tripper 140 by pressing the tripper 140 with the reset block 130. The self-resetting tripping mechanism 100 can be remotely controlled without the need for staff to be on site, thereby saving human resources and operation time. Meanwhile, the self-resetting tripping mechanism 100 described above has a simple structure and does not need to be linked with an operating mechanism to reset the tripper 140, so that the operating torque of the switch device is not increased and the operation feeling is not affected.
[0032] Optionally, the output shaft 111 of the motor 110 rotates around a first direction, the gear transmission assembly 120 drives the reset block 130 to press the tripper 140 to reset, the output shaft 111 of the motor 110 rotates around a second direction opposite to the first direction, and the gear transmission assembly 120 drives the reset block 130 to move away from the tripper 140.
[0033] The output shaft 111 of the motor 110 can rotate in two opposite directions. When the output shaft 111 rotates around a first direction, the gear transmission assembly 120 drives the reset block 130 to press the tripper 140 to reset. After the tripper 140 is reset, the output shaft 111 rotates around a second direction opposite to the first direction, and the gear transmission assembly 120 drives the reset block 130 to move away from the tripper 140 to avoid affecting other actions of the contact unit.
[0034] Optionally, the center line of the rotation of the output shaft 111 of the motor 110 and the reset direction of the tripper 140 form a preset included angle, and 0° < the preset included angle ≤ 90°.
[0035] It should be noted that the center line of the rotation of the output shaft 111 of the motor 110 refers to a straight line around which the output shaft 111 of the motor 110 rotates. The reset direction of the tripper 140 refers to the movement direction of the reset structure 141 of the tripper 140 which can reset the tripper 140, wherein the reset structure 141 is a structure on the tripper 140 which is pressed by the reset block 130 during the reset process.
[0036] The rotation center line of the output shaft 111 of the motor 110 is arranged at a preset angle with the reset direction of the tripping device 140, which can reduce the size of the tripping mechanism 100 with self-resetting in the reset direction of the tripping device 140, simplify the structure of the gear transmission assembly 120, and further simplify the structure of the tripping mechanism 100 with self-resetting.
[0037] Preferably, the rotation center line of the output shaft 111 of the motor 110 is perpendicular to the reset direction of the tripping device 140. In this way, the design of the gear transmission assembly 120 is more convenient.
[0038] Optionally, the gear transmission assembly 120 is used to convert the rotary motion of the output shaft 111 of the motor 110 into the linear motion of the reset block 130, and the linear motion direction of the reset block 130 is the same as the reset direction of the tripping device 140.
[0039] When the reset block 130 moves along the linear motion, after abutting against the reset structure 141 on the tripping device 140, the reset of the tripping device 140 is realized by pressing the reset structure 141 of the tripping device 140. Converting the rotary motion of the output shaft 111 of the motor 110 into the linear motion of the reset block 130, and making the motion direction of the reset block 130 the same as the reset direction of the tripping device 140, can make the motion of the reset structure 141 more stable.
[0040] Optionally, the gear transmission assembly 120 includes a first rotary gear 121 and a spur gear 122. The first rotary gear 121 is drivingly connected with the output shaft 111 of the motor 110, and the rotary motion of the output shaft 111 of the motor 110 can be transmitted to the first rotary gear 121 to make the first rotary gear 121 rotate around its own axis. The first rotary gear 121 is engaged with the spur gear 122, so as to convert the rotary motion of the output shaft 111 of the motor 110 into the linear motion of the spur gear 122, and the linear motion direction of the spur gear 122 is perpendicular to the axis of the first rotary gear 121. The reset block 130 is connected with the spur gear 122 and moves along the linear motion with the spur gear 122 under the driving of the spur gear 122. Thus, the rotary motion of the output shaft 111 of the motor 110 is converted into the linear motion of the reset block 130. The axis of the first rotary gear 121 is perpendicular to the reset direction of the tripping device 140, so as to ensure that the motion direction of the reset block 130 is the same as the reset direction of the tripping device 140.
[0041] Optionally, the first rotary gear 121 is fixed on the output shaft 111 of the motor 110, and the first rotary gear 121 is coaxially arranged with the output shaft 111 of the motor 110.
[0042] Directly fixing the first rotary gear 121 on the output shaft 111 of the motor 110 can shorten the transmission path of the motion, and make the structure of the gear transmission assembly 120 simpler.
[0043] Optionally, please refer to Figure 2 The gear transmission assembly 120 is used to convert the rotating motion of the output shaft 111 of the motor 110 into the rotating motion of the reset block 130, and the reset block 130 continues to rotate after abutting against the tripping device 140 to press the tripping device 140 to reset.
[0044] During the rotation of the reset block 130, after abutting against the reset structure 141 on the tripping device 140, the reset block 130 continues to rotate, that is, the reset of the tripping device 140 is realized by pressing the reset structure 141 of the tripping device 140. Converting the rotating motion of the output shaft 111 of the motor 110 into the rotating motion of the reset block 130 can reduce the size of the tripping mechanism 100 in the reset direction of the tripping device 140.
[0045] Optionally, the gear transmission assembly 120 includes a second rotating gear 123, which is drivingly connected with the output shaft 111 of the motor 110. The rotating motion of the motor 110 can be transmitted to the second rotating gear 123 to make the second rotating gear 123 rotate around its own axis. The reset block 130 is connected with the second rotating gear 123, and the second rotating gear 123 rotates while driving the reset block 130 to rotate synchronously. Thus, the rotating motion of the output shaft 111 of the motor 110 is converted into the rotating motion of the reset block 130. The reset block 130 includes a cam portion 131 for pressing the tripping device 140 to reset. The axis of the second rotating gear 123 is perpendicular to the reset direction of the tripping device 140, and the axis of the cam portion 131 coincides with the axis of the second rotating gear 123. In this way, the cam portion 131 can press the reset structure 141 of the tripping device 140 to move in the reset direction of the tripping device 140 by using its arc surface during the rotation of the second rotating gear 123.
[0046] Optionally, the reset block 130 includes a rotating shaft 132 and two opposite cam portions 131 coaxially arranged with the rotating shaft 132. The rotating shaft 132 is coaxially arranged with the second rotating gear 123, and the two cam portions 131 completely coincide in the orthographic projection in the axis direction of the rotating shaft 132. The two cam portions 131 abut against the reset structure 141 of the tripping device 140 at the same time, so that the reset structure 141 is more balanced in force and more stable in movement.
[0047] Optionally, the gear transmission assembly 120 further comprises a third rotating gear 124 engaged with the second rotating gear 123, the third rotating gear 124 is fixed on the output shaft 111 of the motor 110, the axis of the third rotating gear 124 coincides with the axis of the output shaft 111 of the motor 110, and the axis of the third rotating gear 124 is parallel to the axis of the second rotating gear 123. The rotating movement of the output shaft 111 of the motor 110 is transmitted to the reset block 130 through the third rotating gear 124 and the second rotating gear 123, which is simple and compact in structure.
[0048] Please refer to Figure 2 and Figure 3 The embodiment also provides a rotary switch 200, comprising a housing 210, an operating mechanism arranged in the housing 210, a contact unit 220, and the self-resetting trip mechanism 100 according to any one of the above, the operating mechanism is used to drive the contact unit 220 to open and close, and the self-resetting trip mechanism 100 drives the contact unit 220 to open through the tripper 140.
[0049] The rotary switch 200 is a switching device for controlling the on-off of a power distribution system, and the operating mechanism and the self-resetting trip mechanism 100 of the rotary switch 200 are respectively linked with the contact unit 220. By controlling the operating mechanism, the contact unit 220 can be controlled to be turned on or turned off, so that when the contact unit 220 is turned on, the rotary switch 200 is closed, and the power distribution system is turned on, and when the contact unit 220 is turned off, the rotary switch 200 is opened, and the power distribution system is turned off. The self-resetting trip mechanism 100 is used to control the contact unit 220 to be turned off in the case of a fault of the power distribution system, so that the rotary switch 200 is opened, and the power distribution system is turned off.
[0050] The rotary switch 200 comprises the same structure and advantages as the self-resetting trip mechanism 100 in the above-mentioned embodiments. The structure and advantages of the self-resetting trip mechanism 100 have been described in detail in the above-mentioned embodiments, and will not be repeated here.
[0051] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A trip unit with self-resetting trip mechanism, characterized in that, The motor (110), the gear transmission assembly (120), the reset block (130) and the tripping device (140), the input end of the gear transmission assembly (120) is drivingly connected with the output shaft (111) of the motor (110), the output end of the gear transmission assembly (120) is connected with the reset block (130), the reset block (130) can press the reset of the tripping device (140) under the drive of the gear transmission assembly (120). The output shaft (111) of the motor (110) rotates around the first direction, the gear transmission assembly (120) drives the reset block (130) to press the reset of the tripping device (140), the output shaft (111) of the motor (110) rotates around the second direction opposite to the first direction, the gear transmission assembly (120) drives the reset block (130) to move away from the tripping device (140).
2. The band reset tripping mechanism of claim 1, wherein, The center line of the rotation of the output shaft (111) of the motor (110) and the reset direction of the tripping device (140) form a preset angle, wherein 0°<the preset angle≤90°.
3. The band reset tripping mechanism of claim 1, wherein, The gear transmission assembly (120) is used for converting the rotary motion of the output shaft (111) of the motor (110) into the linear motion of the reset block (130), and the linear motion direction of the reset block (130) is the same as the reset direction of the tripping device (140).
4. The band reset tripping mechanism of claim 1, wherein, The gear transmission assembly (120) includes a first rotary gear (121) and a spur gear (122), the first rotary gear (121) is drivingly connected with the output shaft (111) of the motor (110), the first rotary gear (121) is engaged with the spur gear (122), the reset block (130) is connected with the spur gear (122), and the axis of the first rotary gear (121) is perpendicular to the reset direction of the tripping device (140).
5. The band reset tripping mechanism of claim 4, wherein, The first rotary gear (121) is fixed on the output shaft (111) of the motor (110), and the first rotary gear (121) is coaxially arranged with the output shaft (111).
6. The band reset tripping mechanism of claim 5, wherein, The gear transmission assembly (120) is used for converting the rotary motion of the output shaft (111) of the motor (110) into the rotary motion of the reset block (130), and the reset block (130) continues to rotate to press the reset of the tripping device (140) after abutting against the tripping device (140).
7. The band reset tripping mechanism of claim 1, wherein, The gear transmission assembly (120) includes a second rotary gear (123), the second rotary gear (123) is drivingly connected with the output shaft (111) of the motor (110), the axis of the second rotary gear (123) is perpendicular to the reset direction of the tripping device (140), the reset block (130) is connected with the second rotary gear (123), the reset block (130) includes a cam portion (131), the axis of the cam portion (131) coincides with the axis of the second rotary gear (123), and the cam portion (131) is used for pressing the reset of the tripping device (140).
8. The band reset tripping mechanism of claim 7, wherein, 9. The band reset tripping mechanism of claim 8, wherein, The gear transmission assembly (120) further comprises a third rotary gear (124) engaged with the second rotary gear (123), the third rotary gear (124) is fixed on an output shaft (111) of the motor (110), an axis of the third rotary gear (124) coincides with an axis of the output shaft (111), and the axis of the third rotary gear (124) is parallel to an axis of the second rotary gear (123).
10. A rotary switch characterized by comprising: The circuit breaker comprises a housing, an operating mechanism arranged in the housing, a contact unit, and the self-resetting trip unit (100) according to any one of claims 1 to 9, the operating mechanism is used to drive the contact unit to open and close, and the self-resetting trip unit (100) drives the contact unit to open through the tripper (140).