Opening and closing structure and circuit breaker

Abstract

The utility model provides an opening and closing structure and a circuit breaker, and relates to the technical field of low-voltage electrical appliances, the opening and closing structure comprises a gear set, a handle and an operating mechanism, the handle is in transmission connection with the operating mechanism, and the handle is provided with a tripping piece; the tripping piece abuts against the gear set to drive the handle to rotate in the process that a tail end gear of the gear set rotates in the first direction, the handle drives the operating mechanism to be switched off, the tail end gear is connected with the handle to drive the handle to rotate when the tail end gear rotates in the second direction, switching-on of the operating mechanism is achieved, and the first direction is opposite to the second direction. The switching-on and switching-off structure provided by the utility model can realize switching-on and switching-off in an electric mode and a manual mode, and is simple in structure, convenient to operate and relatively good in reliability.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a switching structure and a circuit breaker. Background Art

[0002] A circuit breaker is a switching device that can open, carry and disconnect current under normal circuit conditions, and can close, carry and disconnect current under abnormal circuit conditions within a specified time. With the rapid development of my country's power and communication technology, higher and higher requirements have been put forward for the practicality, safety and reliability of terminal electrical equipment such as circuit breakers. Traditional circuit breakers are far from meeting these requirements. In the continuous research and development, circuit breakers have not only reached a new level in miniaturization, intelligence, and reliability, but also many new designs have emerged, such as smart circuit breakers. Smart circuit breakers use microcontrollers, Internet of Things technology and new detectors to establish a new circuit breaker secondary system. At present, they have been gradually applied to many aspects such as smart parks and smart electricity use.

[0003] At present, the intelligent circuit breaker includes a motor, a gear set connected to the motor, a handle and an operating mechanism. The end gear of the gear set rotates in a first direction to drive the handle to rotate, and the handle is connected to the operating mechanism to drive the operating mechanism to close the circuit. A protrusion structure is arranged on the end gear of the gear set. When opening the circuit, the end gear rotates in the first direction, and the protrusion structure drives the tripping member to trip to realize opening. However, the overall structure of the existing circuit breaker with a manual operating mechanism and an electric operating mechanism is relatively complex, and there is a problem of poor reliability. Utility Model Content

[0004] The purpose of the present application is to provide a switch-opening and closing structure and a circuit breaker to address the deficiencies in the above-mentioned prior art, which can realize both electric and manual switch-opening and closing, and has a simple structure, is easy to operate, and has good reliability.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] On the one hand, an embodiment of the present application provides a closing and opening structure, including: a gear group, a handle and an operating mechanism, the handle is transmission-connected to the operating mechanism, a release member is provided on the handle, the release member abuts against the gear group to drive the handle to rotate when the terminal gear of the gear group rotates along a first direction, the operating mechanism is opened by driving the handle, the terminal gear is connected to the handle to drive the handle to rotate when the terminal gear rotates along a second direction, thereby closing the operating mechanism, the first direction is opposite to the second direction.

[0007] As an practicable method, the handle includes a sector gear, which is meshed with the end gear. The end gear of the gear set rotates in the second direction to drive the sector gear to rotate in the first direction to drive the operating mechanism to close the switch. The first direction is opposite to the second direction.

[0008] As an implementable method, the tripping part is a lever, which is rotatably connected to the handle, and a boss is provided on the terminal gear corresponding to the lever. When the terminal gear rotates along a first direction, it abuts against the lever and drives the lever to rotate along a second direction, thereby driving the handle to rotate along the second direction to realize opening the gate.

[0009] As an implementable manner, a limit block is provided on the handle to abut against the shifting rod when the shifting rod rotates along the second direction, and the shifting rod drives the handle to rotate through the limit block.

[0010] As an implementable manner, a mounting post is protruded from the handle, and the end of the lever is sleeved on the mounting post to be rotatably connected to the handle. An elastic member is also provided between the lever and the handle to drive the lever to reset.

[0011] As an implementable manner, the elastic member is a torsion spring, which is sleeved on the mounting column, with one end connected to the shift rod and the other end connected to the limit block.

[0012] As an implementable method, the opening and closing structure also includes a housing, and the gear set, handle and operating mechanism are arranged in the housing. A limiting protrusion is provided on the housing corresponding to the opening position of the lever to limit the position of the lever after opening.

[0013] As an implementable manner, the opening and closing structure also includes a manual button arranged on the shell, the manual button is rotatably connected to the shell, and one end of the manual button is drivingly connected to the handle through a first connecting rod.

[0014] As an implementable manner, the handle is connected to the operating mechanism through a second connecting rod, and the first connecting rod and the second connecting rod are connected to the handle respectively.

[0015] Another aspect of an embodiment of the present application provides a circuit breaker including the above-mentioned opening and closing structure.

[0016] The beneficial effects of this application include:

[0017] The present application provides a switch-on / off structure, comprising: a gear set, a handle and an operating mechanism, wherein the handle is connected to the operating mechanism by transmission, a release member is arranged on the handle, the release member abuts against the gear set to drive the handle to rotate when the terminal gear of the gear set rotates in a first direction, the operating mechanism is driven to open by the handle, the terminal gear is connected to the handle to drive the handle to rotate when the terminal gear rotates in a second direction, and the operating mechanism is closed, and the first direction is opposite to the second direction. The switch-on / off structure can realize the switch-on / off in both electric and manual modes, and has a simple structure, is easy to operate, and has good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 One of the structural schematic diagrams of a switch-on and switch-off structure provided in an embodiment of the present application;

[0020] Figure 2 A closing state diagram of a split-closing structure provided in an embodiment of the present application;

[0021] Figure 3 An opening state diagram of an opening and closing structure provided in an embodiment of the present application;

[0022] Figure 4 One of the partial schematic diagrams of a switch-opening and closing structure provided in an embodiment of the present application;

[0023] Figure 5 A second partial schematic diagram of a switch-opening and closing structure provided in an embodiment of the present application;

[0024] Figure 6 The third partial schematic diagram of a switch-opening and closing structure provided in an embodiment of the present application.

[0025] Icons: 100-opening and closing structure; 120-gear set; 121-end gear; 122-boss; 130-handle; 131-sector gear; 132-limiting block; 133-mounting column; 140-operating mechanism; 150-tripping member; 160-housing; 161-limiting protrusion; 170-hand-operated button; 171-first connecting rod; 172-second connecting rod; 180-driving source; 190-elastic member. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In one aspect of an embodiment of the present application, a switch-on / off structure 100 is provided. Figure 1 , Figure 2 and Figure 3 As shown, it includes: a gear set 120, a handle 130 and an operating mechanism 140, the handle 130 is connected to the operating mechanism 140 in a transmission manner, and a release member 150 is provided on the handle 130. The release member 150 abuts against the gear set 120 to move the terminal gear 121 of the gear set 120 along the first direction ( Figure 2 The handle 130 is driven to rotate during the rotation process, and the operating mechanism 140 is driven to open the gate by the handle 130; the end gear 121 is connected to the handle 130 so that the end gear 121 is rotated in the second direction ( Figure 3 When the handle 130 is rotated (in the B direction), the handle 130 is driven to rotate, so that the operating mechanism 140 is closed, and the first direction is opposite to the second direction.

[0031] The opening and closing structure 100 of the embodiment of the present application is applied to a circuit breaker to realize the opening and closing of the circuit breaker. Specifically, the opening and closing structure 100 includes a gear set 120, a handle 130 and an operating mechanism 140. The gear set 120 is connected to a driving source 180 so as to rotate under the drive of the driving source 180, so that the end gear 121 rotates. The end gear 121 is connected to the handle 130 or abuts against the release member 150 to rotate the handle 130. The handle 130 is transmission-connected with the operating mechanism 140 to drive the operating mechanism 140 to open or close the circuit breaker. A moving contact is provided on the operating mechanism 140, thereby driving the moving contact to move and contact or separate with the static contact to realize the closing or opening of the circuit breaker.

[0032] Specifically, Figure 3 The opening state of the opening and closing structure 100 is that when the opening and closing structure 100 needs to be closed, the driving source 180 drives the gear set 120 to rotate, so that the end gear 121 rotates along the second direction B, and the end gear 121 drives the handle 130 to rotate along the first direction A, and then drives the operating mechanism 140 to rotate along the second direction B, thereby realizing the closing of the operating mechanism 140. Figure 2 The closing state of the opening and closing structure 100 is that when the opening and closing structure 100 needs to be opened, the driving source 180 drives the gear set 120 to rotate, so that the end gear 121 rotates along the first direction A. When the end gear 121 rotates along the first direction, it abuts against the release member 150 provided on the handle 130, and drives the handle 130 to rotate along the second direction B, thereby driving the operating mechanism 140 to rotate along the first direction A, thereby realizing the opening of the operating mechanism 140.

[0033] It can be seen from the working state of the above-mentioned opening and closing structure 100 that during the opening and closing process of the opening and closing structure 100, the driving direction of the driving source 180 is opposite. It has a simple structure, is easy to operate, and has good reliability.

[0034] It should be noted that Figure 1 and Figure 2 This is a view of the circuit breaker from opposite sides. The clockwise direction of direction A is Figure 2 In addition, the first direction A and the second direction B are both rotation directions along the circumference, wherein one is a clockwise rotation and the other is a counterclockwise rotation.

[0035] The present application provides a switch-on / off structure 100, comprising: a gear set 120, a handle 130 and an operating mechanism 140, wherein the handle 130 is connected to the operating mechanism 140 by transmission, and a release member 150 is arranged on the handle 130, wherein the release member 150 abuts against the gear set 120 to drive the handle 130 to rotate when the end gear 121 of the gear set 120 rotates in a first direction, and the operating mechanism 140 is driven to open the switch by the handle 130, and the end gear 121 is connected to the handle 130 to drive the handle 130 to rotate when the end gear 121 rotates in a second direction, so as to close the operating mechanism 140, and the first direction is opposite to the second direction. The switch-on / off structure 100 is simple in structure, easy to operate, and has good reliability.

[0036] Optional, such as Figure 2 , Figure 3 and Figure 4 As shown, the handle 130 includes a sector gear 131, which meshes with the end gear 121. The end gear 121 of the gear set 120 rotates in the second direction to drive the sector gear 131 to rotate in the first direction, so as to drive the operating mechanism 140 to close the switch.

[0037] The handle 130 includes a sector gear 131, so that the end gear 121 and the sector gear 131 have two working states of engagement and disengagement. Specifically, when the opening and closing structure 100 needs to close, the end gear 121 is engaged with the sector gear 131, and the sector gear 131 rotates under the drive of the end gear 121 to drive the operating mechanism 140 to close. After the closing is completed, the sector gear 131 and the end gear 121 are converted from the meshing state to the disengaged state. When the opening and closing structure 100 needs to open, the end gear 121 rotates along the first direction A, and the boss 122 on the end gear 121 contacts the tripping member 150 and pushes the handle 130 to rotate counterclockwise, driving the operating mechanism 140 to open.

[0038] It is understandable that, in order to achieve transmission, the final gear 121 should have a wheel disc meshing with the upper gear and a wheel disc meshing with the handle. In order to simplify the structure of the final gear 121, the wheel disc meshing with the handle 130 can also be set as a fan-shaped wheel, such as Figure 2 and Figure 3 As shown, the sector wheel is meshed with the sector gear of the handle.

[0039] In one possible implementation of the embodiment of the present application, Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the tripping member 150 is a lever, which is rotatably connected to the handle 130. A boss 122 is provided on the end gear 121 corresponding to the lever. When the end gear 121 rotates along a first direction, it abuts against the lever and drives the lever to rotate along a second direction, thereby driving the handle 130 to rotate along the second direction to realize opening of the gate.

[0040] When the opening and closing structure 100 is opened, the end gear 121 rotates along the first direction, and a boss 122 is provided on the end gear 121 corresponding to the lever. When the boss 122 rotates, it abuts against the end of the lever, thereby driving the lever to rotate, and then driving the handle 130 to rotate to achieve opening.

[0041] In addition, the release member 150 in the prior art is arranged on the housing 160. In order to realize the linkage between the end gear 121 and the handle 130 when opening the gate, the release member 150 includes components that contact the handle 130 and the end gear 121 respectively, making the structure of the release member 150 in the prior art complicated. In the embodiment of the present application, the release member 150 is arranged on the handle 130, so that the release member 150 only needs to abut against the end gear 121, thereby making the lever structure of the present application simple.

[0042] Optional, such as Figure 4 and Figure 5 As shown, a limit block 132 is provided on the handle 130 to abut against the shifting rod when the shifting rod rotates along the second direction, and the shifting rod drives the handle 130 to rotate through the limit block 132 .

[0043] Since the lever is rotatably connected to the handle 130, in order to avoid the situation where the handle 130 starts to rotate only after the end of the lever rotates a large angle along with the boss 122, thereby extending the response time, a limit block 132 is provided on the handle 130 in the embodiment of the present application. After the end of the lever is driven to rotate a small angle along the second direction, the middle part of the lever abuts against the limit block 132. When the lever continues to rotate, it can drive the handle 130 to rotate.

[0044] In one possible implementation of the embodiment of the present application, Figure 2 and Figure 3 As shown, a mounting post 133 protrudes from the handle 130, and the end of the lever is sleeved on the mounting post 133 to be rotatably connected to the handle 130. An elastic member 190 is also provided between the lever and the handle 130 to drive the lever to reset during the closing process.

[0045] The handle 130 protrudes from the mounting post 133 , and the end of the lever is sleeved on the mounting post 133 , so that the lever is rotatably connected to the handle 130 and the rotation is smooth.

[0046] An elastic member 190 is also provided between the lever and the handle 130. Specifically, taking the torsion spring as an example, during the opening process, the release member 150 contacts the limit block 132, and the torsion spring is in the initial position. When the opening is completed, the release member 150 contacts the limit protrusion 161, and the torsion spring angle becomes larger, and the release member 150 is out of contact with the limit block 132; during the closing process, the torsion spring resets to the initial position, and the release member 150 contacts the limit block 132. The torsion spring limits the movement of the release member 150 during the opening process to prevent the release member 150 from interfering with the operating button.

[0047] Optional, such as Figure 2 and Figure 3 As shown, the elastic member 190 is a torsion spring, which is sleeved on the mounting column 133 , and one end of the torsion spring is connected to the shift rod, and the other end is connected to the limit block 132 .

[0048] One end of the torsion spring is overlapped on the side of the release member 150 away from the limit block 132. When the switch is closed, the torsion spring makes 150 overlap on the limit block 132, and the torsion spring is in the initial installation position. When the switch is opened, the boss 122 drives the release member 150 to rotate the fan gear 131. When the switch is opened, the limit protrusion 161 presses against the release member 150 to increase the angle of the torsion spring, and the release member 150 is away from the limit block 132. During the closing process, the limit protrusion 161 is out of contact with the release member 150, and the torsion spring is reset to the initial position, so that the release member 150 overlaps on the limit block 132.

[0049] Among them, Figure 4 and Figure 5 As shown, a mounting groove for the end of the torsion spring is formed on the limit block 132, one force arm of the torsion spring is arranged in the mounting groove, and the other force arm is fixed to the shifting rod, and when the shifting rod rotates along the second direction, the elastic potential energy is compressed and accumulated.

[0050] The elastic member 190 is configured as a torsion spring. On the one hand, it can be sleeved on the mounting column 133 to fully utilize the mounting environment. On the other hand, the end portion is configured in the mounting groove of the limit block 132 to utilize the space on the limit block 132 .

[0051] In one possible implementation of the embodiment of the present application, Figure 6 As shown, the opening and closing structure 100 also includes a housing 160, and the gear set 120, the handle 130 and the operating mechanism 140 are arranged in the housing 160. A limiting protrusion 161 is provided on the housing 160 corresponding to the opening position of the lever to limit the position of the lever after opening.

[0052] The limiting protrusion 161 limits the position of the lever after the switch is opened, so as to prevent the lever from continuing to rotate in the second direction after the switch is opened and interfering with other components of the switch opening and closing structure 100. Figure 2When the upper right corner of the figure is in the middle, the distance to the manual operation button 170 is close, and there is a risk of affecting the normal operation of the manual operation button 170. Figure 6 As shown, a limiting protrusion 161 is provided on the housing 160 , and the limiting protrusion 161 blocks the continued movement of the lever to avoid the above-mentioned risks.

[0053] Optional, such as Figure 1 The switch-opening and closing structure 100 further includes a manual button 170 disposed on the housing 160 . The manual button 170 is rotatably connected to the housing 160 . One end of the manual button 170 is drivingly connected to the handle 130 via a first connecting rod 171 .

[0054] The manual button 170 is pressed by the operator to open or close the opening and closing structure 100. Specifically, the manual button 170 is arranged on the side wall of the housing 160 so that the manual button 170 is exposed from the housing 160 for easy operation. The manual button 170 is rotatably connected to the housing 160, and one end of the manual button 170 is drivingly connected to the handle 130 through the first connecting rod 171. In this way, when the manual button 170 is pressed, the handle 130 is rotated, and the handle 130 is drivingly connected to the operating mechanism 140, thereby realizing the opening and closing of the operating mechanism 140.

[0055] From the above, it can be seen that the opening and closing of the opening and closing structure 100 can be achieved through the manual button 170. Therefore, the opening and closing structure 100 of the embodiment of the present application can be closed and opened by both electric and manual methods, making the operation convenient and safe, and the operability is strong.

[0056] In one possible implementation of the embodiment of the present application, Figure 1 As shown, the handle 130 is transmission-connected to the operating mechanism 140 via the second connecting rod 172 , and the first connecting rod 171 and the second connecting rod 172 are respectively connected to opposite ends of the handle 130 .

[0057] The handle 130 is connected to the manual button 170 through the first connecting rod 171, and is connected to the operating mechanism 140 through the second connecting rod 172. The connection points between the first connecting rod 171, the second connecting rod 172 and the handle 130 are arranged on opposite sides of the handle 130. In this way, when the manual button 170 drives the operating mechanism 140 to rotate through the handle 130, the operating mechanism 140 can be rotated at a larger angle, so that the moving contact connected to the operating mechanism 140 can be rotated at a larger angle, and the opening efficiency is higher.

[0058] The present application also discloses a circuit breaker, including the above-mentioned opening and closing structure 100. The circuit breaker includes the same structure and beneficial effects as the opening and closing structure 100 in the above-mentioned embodiment. The structure and beneficial effects of the opening and closing structure 100 have been described in detail in the above-mentioned embodiment, and will not be repeated here.

[0059] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A switch-on and switch-off structure, characterized in that: include: A gear set (120), a handle (130) and an operating mechanism (140), wherein the handle (130) is transmission-connected with the operating mechanism (140), and a release member (150) is arranged on the handle (130), wherein the release member (150) abuts against the gear set (120) to drive the handle (130) to rotate when the terminal gear (121) of the gear set (120) rotates in a first direction, and the operating mechanism (140) is driven to open the gate through the handle (130), and the terminal gear (121) is connected to the handle (130) to drive the handle (130) to rotate when the terminal gear (121) rotates in a second direction, so as to close the gate of the operating mechanism (140), and the first direction is opposite to the second direction.

2. The opening and closing structure according to claim 1, characterized in that: The handle (130) comprises a sector gear (131), wherein the sector gear (131) is meshed with the end gear (121), and the end gear (121) rotates in a second direction to drive the sector gear (131) to rotate in a first direction, so as to drive the operating mechanism (140) to close the switch, and the first direction is opposite to the second direction.

3. The opening and closing structure according to claim 1, characterized in that: The release member (150) is a lever, which is rotatably connected to the handle (130). A boss (122) is provided on the end gear (121) corresponding to the lever. When the end gear (121) rotates in the first direction, it abuts against the lever and drives the lever to rotate in the second direction, thereby driving the handle (130) to rotate in the second direction to realize opening of the gate.

4. The opening and closing structure according to claim 3, characterized in that: A limit block (132) is provided on the handle (130) to abut against the shifting rod when the shifting rod rotates along the second direction, and the shifting rod drives the handle (130) to rotate via the limit block (132).

5. The opening and closing structure according to claim 4, characterized in that: A mounting post (133) protrudes from the handle (130), and the end of the lever is sleeved on the mounting post (133) to be rotatably connected to the handle (130). An elastic member (190) is also provided between the lever and the handle (130) to drive the lever to reset.

6. The opening and closing structure according to claim 5, characterized in that: The elastic member (190) is a torsion spring, which is sleeved on the mounting column (133), one end of which is connected to the shifting rod, and the other end of which is connected to the limiting block (132).

7. The opening and closing structure according to claim 3, characterized in that: It also comprises a housing (160), wherein the gear set (120), the handle (130) and the operating mechanism (140) are arranged in the housing (160), and a limiting protrusion (161) is arranged on the housing (160) corresponding to the opening position of the lever to limit the position of the lever after opening.

8. The opening and closing structure according to claim 6, characterized in that: It also includes a manual operation button (170) arranged on the housing (160), wherein the manual operation button (170) is rotatably connected to the housing (160), and one end of the manual operation button (170) is drivingly connected to the handle (130) via a first connecting rod (171).

9. The opening and closing structure according to claim 8, characterized in that: The handle (130) is transmission-connected to the operating mechanism (140) via a second connecting rod (172), and the first connecting rod (171) and the second connecting rod (172) are respectively connected to the handle (130).

10. A circuit breaker, characterized in that: It comprises the opening and closing structure (100) as claimed in any one of claims 1 to 9.

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