Operating accessories and circuit breaker assemblies
By introducing a buffer groove and driven shaft into the circuit breaker assembly, combined with interference fit and a wobbly linkage design, the problem of transmitting impact force through the operating accessory is solved, thus improving the safety and reliability of the circuit breaker assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DELIXI ELECTRIC
- Filing Date
- 2025-04-15
- Publication Date
- 2026-06-02
AI Technical Summary
During use, the force exerted by the operating mechanism of the existing operating accessories can easily be transmitted to the operator through the linkage, which increases the risk of impact and affects the safety of the circuit breaker assembly.
An operating accessory was designed, including a drive shaft, a drive wheel, a driven wheel, and a connecting rod. By setting a buffer groove on the drive wheel and cooperating with the driven shaft, the possibility of force being transmitted to the operator is reduced. An interference fit and a guide surface are used to improve the connection reliability. The connecting rod and the connecting parts can wobble to reduce the risk of impact.
It effectively reduces the possibility of the force of the operating mechanism being transmitted to the operator, improves the safety and reliability of the circuit breaker assembly, and reduces the possibility of the operating mechanism being affected by the force applied by the operator.
Smart Images
Figure CN224318438U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of low-voltage electrical technology, and more particularly to an operating accessory and circuit breaker assembly. Background Technology
[0002] Circuit breakers provide protection for circuits electrically connected to them. In the event of an overload, short circuit, or other abnormal condition, the circuit breaker's operating mechanism activates, causing the circuit breaker to open and thus preventing the circuit fault from escalating.
[0003] Operators can directly control the operating mechanism to switch the working state of the circuit breaker, or they can control the operating mechanism through the operating accessories to switch the working state of the circuit breaker.
[0004] Based on the existing structure of the operating accessories, during the use of the operating accessories, there is a tendency for the force of the operating mechanism to be applied to the operator through the operating accessories. Utility Model Content
[0005] This application provides an operating accessory and circuit breaker assembly to reduce the likelihood of the force applied by the operating mechanism to the linkage being transmitted to the operator through the operating accessory, thereby reducing the possibility of the force applied by the operating mechanism to the linkage causing impact to the operator and ensuring the safety of the circuit breaker assembly. It also reduces the possibility of the operator's application of force to the operating accessory affecting the operation of the operating mechanism.
[0006] In a first aspect, this application provides an operating accessory applied to a circuit breaker assembly. The circuit breaker assembly includes an operating mechanism, and the operating accessory includes a drive shaft, a drive wheel, a driven wheel, and a connecting rod. The drive wheel is connected to the drive shaft, and rotation of the drive shaft drives the drive wheel to rotate. The driven wheel meshes with the drive wheel. A first end of the connecting rod is connected to the driven wheel, and a second end of the connecting rod is connected to the operating handle of the operating mechanism. The drive wheel includes a buffer groove, and the operating accessory also includes a driven shaft inserted into the drive shaft along its radial direction, rotatably mounted in the buffer groove.
[0007] When the driven wheel is in the critical position of closing or opening, the operating mechanism applies a force to the connecting rod. This force is transmitted to the drive wheel through the connecting rod and the driven wheel, causing the drive wheel to rotate relative to the driven shaft. This positions the driven shaft between the two opposing side walls of the buffer groove. When the driven wheel is in the critical position of opening, the connection point between the connecting rod and the driven wheel is further away from the rotation center of the operating handle compared to when the driven wheel is in the critical position of closing.
[0008] In this example, a buffer groove is located on the drive wheel. Rotation of the drive shaft causes the driven shaft to rotate within the buffer groove, thereby causing the driven shaft to abut against the side wall of the buffer groove and drive the drive wheel to rotate via the buffer groove. Since the driven wheel meshes with the drive wheel, the drive wheel can drive the driven wheel to rotate. Because the first end of the connecting rod is connected to the driven wheel and the second end is connected to the operating handle, rotation of the driven wheel can move the connecting rod, causing the connecting rod to actuate the operating handle, thus switching the circuit breaker assembly between the closed and open states.
[0009] When the driven wheel rotates to the critical position for closing, the operating mechanism applies a force to the driven wheel through the connecting rod. Since the direction of this force is opposite to the direction in which the driven wheel drives the driven wheel to rotate, the driven wheel can rotate in the opposite direction to the direction in which the driven wheel drives the driven wheel to rotate. The driven wheel drives the driven wheel to rotate, causing the buffer groove located on the driven wheel to rotate relative to the driven shaft, thereby causing the driven shaft to be located between the two side walls of the buffer groove that are opposite to each other.
[0010] Therefore, the cooperation between the buffer groove and the driven shaft can reduce the likelihood of the force applied by the operating mechanism to the connecting rod being transmitted to the operator through the driven wheel, drive wheel, driven shaft, and drive shaft. This reduces the possibility of the force applied by the operating mechanism to the connecting rod being applied to the operator and causing impact, thus ensuring the safety of the circuit breaker assembly. It can also reduce the possibility of the operator applying force to the drive shaft, affecting the operation of the operating mechanism.
[0011] In some possible implementations, the buffer groove includes a first buffer groove and a second buffer groove arranged opposite to each other. Along the radial direction of the drive shaft, the driven shaft passes through the drive shaft, with the first end of the driven shaft located in the first buffer groove and the second end of the driven shaft located in the second buffer groove.
[0012] In this example, the driven shaft passes through the drive shaft radially, such that both the first and second ends of the driven shaft protrude from the outer surface of the drive shaft. The buffer groove includes a first buffer groove and a second buffer groove disposed opposite to each other. The first end of the driven shaft can be disposed in the first buffer groove, and the second end of the driven shaft can be disposed in the second buffer groove. Through the engagement of the first end of the driven shaft with the sidewall of the first buffer groove and the engagement of the second end of the driven shaft with the sidewall of the second buffer groove, the driven shaft can apply force to the drive wheel from multiple positions, thereby making the engagement between the driven shaft and the drive wheel more reliable.
[0013] In some possible implementations, the sidewall of the buffer groove facing the rotation center of the drive shaft is provided with a receiving groove, the end of the driven shaft extends into the receiving groove, and the driven shaft is rotatable relative to the receiving groove.
[0014] In this application example, a receiving groove is provided on the side wall of the buffer groove facing the rotation center of the drive shaft, so that the driven shaft can extend into the receiving groove. During the assembly and use of the operating accessory, the possibility of the driven shaft disengaging from the buffer groove can be reduced, ensuring the reliability of the operating accessory.
[0015] In some possible implementations, the drive shaft includes a first mounting hole disposed along the radial direction of the drive shaft, and at least part of the driven shaft is interference-fitted with the first mounting hole.
[0016] In this application example, by providing an interference fit between at least part of the driven shaft and the first mounting hole, the possibility of the driven shaft disengaging from the first mounting hole can be reduced. Since the first mounting hole is located on the drive shaft, the interference fit between the first mounting hole and the driven shaft can ensure a reliable connection between the drive shaft and the driven shaft, reducing the possibility of separation between the drive shaft and the driven shaft.
[0017] In some possible implementations, the end of the driven shaft is provided with a first guide surface along the direction in which the driven shaft is inserted into the drive shaft, and the inclination direction of the first guide surface is adapted to the direction in which the driven shaft is inserted into the drive shaft.
[0018] The inclination direction of the first guide surface matches the direction in which the driven shaft is inserted into the drive shaft, allowing the size of the driven shaft to gradually increase along the direction of insertion. During the insertion of the driven shaft into the drive shaft, the end with the smallest size of the driven shaft extends into the drive shaft first, making it easier for the driven shaft to enter the drive shaft and improving the assembly efficiency of the driven shaft and the drive shaft.
[0019] In some possible implementations, the operating accessory also includes a connector that passes through the driven wheel and the connecting rod, the connector connecting the driven wheel and the connecting rod, and the connecting rod being wobbly relative to the connector.
[0020] In this example, the connecting member can pass through the driven wheel and the connecting rod to achieve the connection between the driven wheel and the connecting rod. Since the second end of the connecting rod is connected to the operating mechanism, and the operating mechanism applies a force to the operating accessory during use, by making the connecting rod sway relative to the connecting member, the force applied by the operating mechanism to the driven wheel through the connecting rod can be reduced. This further reduces the possibility that the force applied by the operating mechanism to the connecting rod is transmitted to the operator through the driven wheel, drive wheel, driven shaft, and drive shaft, thus reducing the possibility that the force applied by the operating mechanism to the connecting rod will cause impact to the operator and ensuring the safety of the circuit breaker assembly.
[0021] In some possible implementations, the end of the connecting rod near the driven wheel has an arc-shaped hole, through which the connecting piece passes.
[0022] In this application example, the linkage can swing relative to the connector by cooperating with the arc-shaped hole, which can reduce the force applied by the operating mechanism to the driven wheel through the linkage, further reducing the possibility that the force applied by the operating mechanism to the linkage is transmitted to the operator through the driven wheel, drive wheel, driven shaft and drive shaft, reducing the possibility that the force applied by the operating mechanism to the linkage will be applied to the operator and cause impact to the operator, thus ensuring the safety of the circuit breaker assembly.
[0023] In some possible implementations, the operating accessory also includes a handheld device that is connected to one end of the drive shaft and exposes the housing of the circuit breaker assembly.
[0024] In this example, by setting a handheld device connected to one end of the drive shaft and exposing the circuit breaker assembly housing, the operator can easily apply force to the drive shaft through the handheld device, causing the drive shaft to move and thereby driving other mechanisms of the operating accessory to move.
[0025] In a second aspect, this application provides a circuit breaker assembly, which includes a circuit breaker and an operating accessory provided by the first aspect and various possible implementations of the first aspect, the operating accessory being connected to the circuit breaker.
[0026] The beneficial effects of the operational accessories provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of a circuit breaker assembly provided as an example of this application.
[0028] Figure 2 This application provides a schematic diagram of the internal structure of a circuit breaker assembly.
[0029] Figure 3 This is a schematic diagram illustrating the interaction between an operating accessory and an operating mechanism, as provided as an example in this application.
[0030] Figure 4 This is a schematic diagram of a drive wheel provided as an example in this application.
[0031] Figure 5 This is a schematic diagram illustrating the engagement of a drive shaft, a drive wheel, and a driven shaft, as provided in this application.
[0032] Figure 6 This is a schematic diagram of a drive shaft provided as an example of this application.
[0033] Explanation of reference numerals in the attached figures:
[0034] 100. Operating accessory; 110. Drive wheel; 111. Buffer groove; 1111. First buffer groove; 1112. Second buffer groove; 120. Drive shaft; 121. First mounting hole; 130. Driven shaft; 140. Driven wheel; 150. Connecting rod; 160. Connecting piece; 210. Operating mechanism; 220. Second housing; 230. Third housing. Detailed Implementation
[0035] To make the purpose, technical solutions, and advantages of the examples in this application clearer, the technical solutions in the examples of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only a part of the examples in this application, not all of them. Based on the examples in this application, all other examples obtained by those skilled in the art without inventive effort are within the scope of protection of this application.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terms used herein in the description of the application are for the purpose of describing particular examples only and are not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the description, claims and drawings of this application are intended to cover non-exclusive inclusion.
[0037] In this document, the term "example" means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of this application. The appearance of the phrase "example" in various places in the specification does not necessarily refer to the same example, nor is it a separate or alternative example mutually exclusive with other examples. It will be explicitly and implicitly understood by those skilled in the art that the examples described herein can be combined with other examples.
[0038] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0039] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the operating accessories and circuit breaker components of this application.
[0040] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.
[0041] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).
[0042] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0043] Based on the above, this application provides an example of an operating accessory and a circuit breaker assembly.
[0044] To enable those skilled in the art to better understand the present application, the operating accessories and circuit breaker components provided in the example of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0045] For example, this application provides a circuit breaker component. Figure 1 This application provides a schematic diagram of the structure of a circuit breaker assembly as an example. Figure 2 This application provides a schematic diagram of the internal structure of a circuit breaker assembly. Please refer to... Figure 1 and Figure 2 The circuit breaker assembly includes a circuit breaker and an operating accessory 100, which is connected to the circuit breaker.
[0046] The circuit breaker includes an operating mechanism 210 and a contact mechanism. The operating mechanism 210 can drive the moving contact in the contact mechanism to contact the stationary contact, so that the circuit breaker is in the closed state, and the circuit connected to the circuit breaker is in an electrically connected state. Alternatively, the operating mechanism 210 can drive the contact to separate from the stationary contact, so that the circuit breaker is in the open state, and the circuit connected to the circuit breaker is in an open state.
[0047] The linkage between the operating mechanism 210 and the contact mechanism is the same as that between the operating mechanism and the contact mechanism in the prior art, and will not be described in detail here.
[0048] The circuit breaker assembly includes a first housing (not shown), a second housing 220, and a third housing 230 that cooperate with each other. The first housing and the second housing 220 cooperate to form a first receiving cavity, and the second housing 220 and the third housing 230 cooperate to form a second receiving cavity.
[0049] The operating mechanism 210 includes an operating handle, part of which extends into the first receiving cavity, while the remaining operating handles and other components of the operating mechanism 210 are installed in the second receiving cavity. Components such as the contact mechanism are also installed in the second receiving cavity.
[0050] The operating accessory 100 may include a handheld component, at least a portion of which protrudes from the side of the first receiving cavity opposite to the second receiving cavity, facilitating operator control of the operating accessory 100 via the handheld component. The remaining structure of the operating accessory 100 is installed within the first receiving cavity, and the operating accessory 100 is connected to an operating handle. The operating accessory 100 is capable of controlling the movement of the operating handle.
[0051] For details regarding the specific structure of Annex 100, please refer to the relevant description below. This application example will not be elaborated upon here.
[0052] Next, the specific structure of the operating accessory 100 mentioned in the circuit breaker assembly will be described in detail.
[0053] This application provides an operating attachment 100, Figure 3 This application provides a schematic diagram illustrating the interaction between an operating accessory and an operating mechanism. Figure 4 This application provides a schematic diagram of the structure of a drive wheel as an example. Figure 5 This is a schematic diagram illustrating the engagement of a drive shaft, a drive wheel, and a driven shaft, as provided in this application.
[0054] Please refer to Figures 1-5 The operating accessory 100 is applied to a circuit breaker assembly, which includes an operating mechanism 210. The operating accessory 100 includes a drive shaft 120, a drive wheel 110, a driven wheel 140, and a connecting rod 150. The drive wheel 110 is connected to the drive shaft 120, and rotation of the drive shaft 120 drives the drive wheel 110 to rotate. The driven wheel 140 meshes with the drive wheel 110. The first end of the connecting rod 150 is connected to the driven wheel 140, and the second end of the connecting rod 150 is connected to the operating handle of the operating mechanism 210. The drive wheel 110 includes a buffer groove 111, and the operating accessory 100 also includes a driven shaft 130, which is inserted into the drive shaft 120 along the radial direction and is rotatably mounted in the buffer groove 111.
[0055] When the driven wheel 140 is in the critical position of closing or opening, the operating mechanism 210 applies a force to the connecting rod 150. The force is transmitted to the drive wheel 110 through the connecting rod 150 and the driven wheel 140, so as to drive the drive wheel 110 to rotate relative to the driven shaft 130, so that the driven shaft 130 is located between the two side walls of the buffer groove 111. When the driven wheel 140 is in the critical position of opening, compared with when the driven wheel 140 is in the critical position of closing, the connection position between the connecting rod 150 and the driven wheel 140 is farther away from the rotation center of the operating handle.
[0056] The drive shaft 120 and the driven shaft 130 can be made of the same or different materials. For example, both the drive shaft 120 and the driven shaft 130 can be made of insulating materials such as polyvinyl chloride (PVC) or polycarbonate (also known as PC plastic). Alternatively, both the drive shaft 120 and the driven shaft 130 can be made of metal materials such as stainless steel. Or, the drive shaft 120 can be made of insulating material, and the driven shaft 130 can be made of metal material. This application example does not specifically limit the manufacturing materials of the drive shaft 120 and the driven shaft 130.
[0057] The drive shaft 120 and the driven shaft 130 can be integrally formed, or the drive shaft 120 and the driven shaft 130 can be connected by a hole-shaft mating method. This application example only describes the connection of the drive shaft 120 and the driven shaft 130 by a hole-shaft mating method.
[0058] Both the driving wheel 110 and the driven wheel 140 are gears, and the driving wheel 110 meshes with the driven wheel 140. The number of teeth on the driving wheel 110 can be equal to or less than the number of teeth on the driven wheel 140.
[0059] The driving wheel 110 can be a circular gear or a sector gear. The driven wheel 140 can be a circular gear or a sector gear. The driving wheel 110 and the driven wheel 140 can be the same or different.
[0060] The drive shaft 120 is connected to the drive wheel 110 via the driven shaft 130. The driven wheel 140 cooperates with the drive wheel 110 and is connected to the operating handle of the circuit breaker via the connecting rod 150.
[0061] Please refer to Figure 4 The drive wheel 110 includes a buffer groove 111, which can be a fan-shaped groove, a trapezoidal groove, etc., as long as the driven shaft 130 can rotate within the buffer groove 111. There may be only one buffer groove 111, or there may be two buffer grooves 111 opposite to each other.
[0062] The two side walls of the buffer groove 111 that are arranged opposite each other refer to the two side walls that are arranged opposite each other along the rotation direction of the driven shaft 130 in the buffer groove 111.
[0063] Along the axial direction of the drive wheel 110, the buffer groove can pass through the drive wheel 110, while the buffer groove 111 may not pass through the drive wheel 110. This application example does not impose specific limitations on this.
[0064] The drive shaft 120 includes a first mounting hole, which can be a blind hole or a through hole. When the first mounting hole is a blind hole, one end of the driven shaft 130 protrudes from the outer surface of the drive shaft 120, and in this case, only one buffer groove 111 is provided. When the first mounting hole is a through hole, both ends of the driven shaft 130 can protrude from the outer surface of the drive shaft 120, and in this case, two buffer grooves 111 can be provided opposite each other.
[0065] In some possible implementations, there may be multiple driven shafts, and correspondingly, there may be multiple buffer grooves spaced apart. The number of buffer grooves 111 is equal to the number of the ends of the driven shafts 130 extending out of the drive shaft 120, and they correspond one-to-one.
[0066] The drive shaft 120 can rotate counterclockwise to close the circuit breaker assembly, and the drive shaft 120 can also rotate clockwise to close the circuit breaker assembly. This application only describes the case of the drive shaft 120 rotating clockwise to close the circuit breaker assembly.
[0067] The initial position of the driven shaft 130 within the buffer groove 111 is between the two opposing side walls of the buffer groove 111. The initial position of the connecting rod 150 is the position of the connecting rod 150 when the connection point between the connecting rod 150 and the driven wheel 140 is on the side of the driven wheel 140 closest to the rotation center of the operating handle.
[0068] The rotation of the driven wheel 140 to the critical closing position means that when the driven wheel 140 rotates to this position, the moving contact and the stationary contact of the circuit breaker assembly are just in contact.
[0069] The driven wheel 140 rotating to the tripping critical position means that when the driven wheel 140 rotates to this position, the moving contact and the stationary contact of the circuit breaker assembly are just separated. In this example, when the driven wheel 140 is in the tripping critical position, the connection position between the connecting rod 150 and the driven wheel 140 is further away from the rotation center of the operating handle than when the driven wheel 140 is in the closing critical position.
[0070] The rotation center of the operating handle is fixed inside the second receiving cavity.
[0071] During the circuit breaker assembly's tripping process, the drive shaft 120 rotates clockwise. Since the driven shaft 130 passes through the drive shaft 120, the clockwise rotation of the drive shaft 120 drives the driven shaft 130 to rotate clockwise within the buffer groove 111, causing the driven shaft 130 to abut against the side wall of the buffer groove 111. The driven shaft 130 applies a clockwise force to the side wall of the buffer groove 111. Since the buffer groove 111 is located on the drive wheel 110, the driven shaft 130 can drive the drive wheel 110 to rotate clockwise. Furthermore, since the driven wheel 140 meshes with the drive wheel 110, the drive wheel 110 can drive the driven wheel 140 to rotate counterclockwise. Since the first end of the connecting rod 150 is connected to the driven wheel 140, when the driven wheel 140 rotates counterclockwise, the driven wheel 140 drives the connecting rod 150 to move away from the operating handle. The connecting rod 150 drives the operating handle to move, so that the operating handle can drive the other structures of the operating mechanism 210 to move, so that the circuit breaker assembly is in the open state.
[0072] During the circuit breaker assembly's tripping process, the drive shaft 120 drives the driven shaft 130 to the tripping critical position. At this point, the moving contact and stationary contact in the operating mechanism 210 have just separated. The elastic element in the operating mechanism 210 applies force to the connecting rod 150 through the operating handle and other structures, causing the connecting rod 150 to move in the direction toward the operating handle. The connecting rod 150 drives the driven wheel 140 to rotate clockwise. Since the drive wheel 110 meshes with the driven wheel 140, the drive wheel 110 rotates counterclockwise under the drive of the driven wheel 140. Because the buffer groove 111 is located on the drive gear, the side wall that abuts against the driven shaft 130 rotates away from the driven shaft 130, so that the driven shaft 130 is located between the two opposite side walls of the buffer groove 111.
[0073] After the drive shaft 120 drives the driven wheel 140 to the opening critical position, if the circuit breaker assembly needs to switch to the closing state, the drive shaft 120 continues to rotate clockwise to drive the driven wheel 140 to the closing critical position. The linkage relationship between the drive shaft 120, driven shaft 130, drive wheel 110, and driven wheel 140 during the rotation of the drive shaft 120 towards the closing critical position is the same as the linkage relationship during the rotation of the drive shaft 120 towards the opening critical position. This application example will not be elaborated upon here.
[0074] Because the connection point between the driven wheel 140 and the driven wheel 140 is farther from the rotation center of the operating handle when the driven wheel 140 is in the opening critical position compared to when it is in the closing critical position, the driven wheel 140 drives the connecting rod 150 to move in the direction towards the rotation center of the operating handle after rotating to the opening critical position and then to the closing critical position. This applies a force along the connecting rod 150 towards the operating handle, causing the operating handle to actuate and thus causing the moving contact of the circuit breaker assembly to contact the stationary contact. When the moving contact and the stationary contact just make contact, the elastic element in the operating mechanism 210 applies a force to the connecting rod 150 through the operating handle and other structures, causing the connecting rod 150 to move in a direction away from the rotation center of the operating handle. The connecting rod 150 then drives the driven wheel 140 to rotate clockwise. Since the drive wheel 110 meshes with the driven wheel 140, the drive wheel 110 rotates counterclockwise. Since the buffer groove 111 is located on the drive gear, the side wall that abuts against the driven shaft 130 rotates away from the driven shaft 130, so that the driven shaft 130 is located between the two side walls of the buffer groove 111.
[0075] In this example, a buffer groove 111 is located on the drive wheel 110. Rotation of the drive shaft 120 drives the driven shaft 130 to rotate within the buffer groove 111, causing the driven shaft 130 to abut against the side wall of the buffer groove 111, thus driving the drive wheel 110 to rotate via the buffer groove 111. Since the driven wheel 140 meshes with the drive wheel 110, the drive wheel 110 can drive the driven wheel 140 to rotate. Because the first end of the connecting rod 150 is connected to the driven wheel 140 and the second end is connected to the operating handle, rotation of the driven wheel 140 can move the connecting rod 150, causing the connecting rod 150 to actuate the operating handle, thereby switching the circuit breaker assembly between the closed and open states.
[0076] When the driven wheel 140 rotates to the critical position for closing or opening, the operating mechanism 210 applies a force to the driven wheel 140 through the connecting rod 150. Since the direction of this force is opposite to the direction in which the driven wheel 110 drives the driven wheel 140 to rotate, the driven wheel 140 rotates in the opposite direction to the direction in which the driven wheel 110 drives the driven wheel 140 to rotate. The driven wheel 140 drives the driven wheel 110 to rotate, causing the buffer groove 111 provided on the driven wheel 110 to rotate relative to the driven shaft 130, thereby causing the driven shaft 130 to be located between the two side walls of the buffer groove 111 that are opposite to each other.
[0077] Therefore, the cooperation between the buffer groove 111 and the driven shaft 130 reduces the likelihood that the force applied by the operating mechanism 210 to the connecting rod 150 will be transmitted to the operator through the driven wheel 140, drive wheel 110, driven shaft 130, and drive shaft 120. This reduces the possibility of the force applied by the operating mechanism 210 to the connecting rod 150 being applied to the operator and causing impact, thus ensuring the safety of the circuit breaker assembly. It also reduces the possibility that the operator's application of force to the drive shaft 120 will affect the operation of the operating mechanism 210.
[0078] Based on the operation attachment 100 provided in the above example, please refer to... Figure 4 and Figure 5 The buffer groove 111 includes a first buffer groove 1111 and a second buffer groove 1112 arranged opposite to each other. Along the radial direction of the drive shaft 120, the driven shaft 130 passes through the drive shaft 120. The first end of the driven shaft 130 is located in the first buffer groove 1111, and the second end of the driven shaft 130 is located in the second buffer groove 1112.
[0079] Driven shaft 130 is inserted through drive shaft 120 in the radial direction, that is, the axial direction of driven shaft 130 is perpendicular to the axial direction of drive shaft 120, so that the first end and the second end of driven shaft 130 both protrude from the outer surface of drive shaft 120.
[0080] The first buffer groove 1111 and the second buffer groove 1112 are arranged opposite each other along the axial direction of the drive shaft 120.
[0081] Along the rotation direction of the driven shaft 130, the dimensions of the first buffer groove 1111 and the second buffer groove 1112 can be the same or different. That is, the distance between the two opposite side walls of the first buffer groove 1111 and the distance between the two opposite side walls of the second buffer groove 1112 can be equal or unequal. As long as it is ensured that under the force applied by the operating mechanism 210, the first end of the driven shaft 130 can be located between the two side walls of the first buffer groove 1111, and the second end of the driven shaft 130 can be located between the two side walls of the second buffer groove 1112, it is acceptable.
[0082] In this example, the driven shaft 130 passes through the drive shaft 120 in the radial direction, such that both the first end and the second end of the driven shaft 130 protrude from the outer surface of the drive shaft 120. The buffer groove 111 includes a first buffer groove 1111 and a second buffer groove 1112 disposed opposite to each other. The first end of the driven shaft 130 can be disposed within the first buffer groove 1111, and the second end of the driven shaft 130 can be disposed within the second buffer groove 1112. Through the engagement of the first end of the driven shaft 130 with the sidewall of the first buffer groove 1111 and the engagement of the second end of the driven shaft 130 with the sidewall of the second buffer groove 1112, the driven shaft 130 can apply force to the drive wheel 110 from multiple positions, thereby making the engagement between the driven shaft 130 and the drive wheel 110 more reliable.
[0083] Based on the operation accessory 100 provided in the above example, the buffer groove 111 has a receiving groove on the side wall facing the rotation center of the drive shaft 120, and the end of the driven shaft 130 extends into the receiving groove, and the driven shaft 130 is rotatable relative to the receiving groove.
[0084] The side wall of the buffer groove 111 facing the rotation center of the drive shaft 120 is a mounting wall, which can be flat or curved.
[0085] Along the rotation direction of the driven shaft 130, the size of the receiving groove can be smaller than the size of the mounting wall, or the size of the receiving groove can be equal to the size of the mounting wall, as long as it is ensured that when the drive wheel 110 rotates under the action of the operating mechanism 210, the driven shaft 130 is located between the two side walls of the receiving groove that are opposite to each other.
[0086] The number of receiving slots can be equal to the number of buffer slots 111, or the number of receiving slots can be less than the number of buffer slots 111. This application example does not impose specific restrictions on this.
[0087] For example, when there is only one buffer groove 111, there is only one receiving groove. When the buffer groove 111 includes a first buffer groove 1111 and a second buffer groove 1112, the receiving groove can be provided only on the side wall of the first buffer groove 1111 facing the rotation center of the drive shaft 120, or the receiving groove can be provided only on the side wall of the second buffer groove 1112 facing the rotation center of the drive shaft 120, or the receiving grooves can be provided on both the side wall of the first buffer groove 1111 facing the rotation center of the drive shaft 120 and the side wall of the second buffer groove 1112 facing the rotation center of the drive shaft 120.
[0088] In this application example, a receiving groove is provided on the side wall of the buffer groove 111 facing the rotation center of the drive shaft 120, so that the driven shaft 130 can be inserted into the receiving groove. During the assembly and use of the operating accessory 100, the possibility of the driven shaft 130 disengaging from the buffer groove 111 can be reduced, ensuring the reliability of the operating accessory 100.
[0089] Based on the operation attachment 100 provided in the above example, Figure 6 A schematic diagram of a drive shaft provided as an example in this application is shown below. Figure 2 and Figure 6 The drive shaft 120 passes through the second housing 220. The drive shaft 120 has a threaded structure on the side facing the third housing 230. The threaded structure can be connected with a gasket, fastening screw, or other structure to limit the relative position of the drive shaft 120 and the second housing 220, prevent the drive shaft 120 from detaching from the second housing 220, and ensure the reliability of the connection between the drive shaft 120 and the second housing 220.
[0090] A metal bushing or bearing can be connected to the position where the drive shaft 120 mates with the second housing 220. By setting a metal bushing or bearing, compared to the drive shaft 120 directly mates with the second housing 220, the hardness of the metal bushing or bearing is higher than that of the second housing 220, which can extend the service life of the operating accessory 100 and ensure the reliability of the circuit breaker assembly.
[0091] Based on the operation attachment 100 provided in the above example, please refer to... Figure 6 The drive shaft 120 includes a first mounting hole 121, which is arranged along the radial direction of the drive shaft 120, and at least part of the driven shaft 130 is interference-fitted with the first mounting hole 121.
[0092] The driven shaft 130 extends into the first mounting hole 121 along the radial direction of the drive shaft 120. The diameter of the first mounting hole 121 can gradually decrease, or the diameter of the first mounting hole 121 can remain partially unchanged while the other part gradually decreases. In this application example, the diameter of the first mounting hole 121 is not specifically limited, as long as at least part of the driven shaft 130 can be interference-fitted with the first mounting hole 121.
[0093] In this application example, by providing an interference fit between at least a portion of the driven shaft 130 and the first mounting hole 121, the possibility of the driven shaft 130 disengaging from the first mounting hole 121 can be reduced. Since the first mounting hole 121 is located on the drive shaft 120, the interference fit between the first mounting hole 121 and the driven shaft 130 ensures a reliable connection between the drive shaft 120 and the driven shaft 130, reducing the possibility of separation between the drive shaft 120 and the driven shaft 130.
[0094] For example, when the first mounting hole 121 and the driven shaft 130 are in clearance fit, the hole wall of the first mounting hole 121 is provided with a first limiting structure, and the side wall of the driven shaft 130 is provided with a second limiting structure, and the first limiting structure and the second limiting structure cooperate.
[0095] Along the radial direction of the drive shaft 120, the first mounting hole 121 can be a through hole, in which case the first mounting hole 121 passes through the drive shaft 120, or the first mounting hole can be a blind hole.
[0096] There may be one first limiting structure, or multiple first limiting structures may be provided at intervals. The number of second limiting structures is equal to the number of first limiting structures, and there is a one-to-one correspondence between the second and first limiting structures.
[0097] The first limiting structure can be a protruding structure, and the second limiting structure can be a groove structure, with at least a portion of the protruding structure extending into the groove structure. Alternatively, the first limiting structure can be a groove structure, and the second limiting structure can be a protruding structure, with at least a portion of the protruding structure extending into the groove structure. The protruding structure is a convex ridge extending radially from the drive shaft 120, and the shape of the groove structure matches the shape of the protruding structure.
[0098] The first limiting structure is provided on the wall of the first mounting hole 121, which is located on the drive shaft 120. The second limiting structure is provided on the side wall of the driven shaft 130. Therefore, the first limiting structure and the second limiting structure cooperate with each other. When the first mounting hole 121 and the driven shaft 130 are in clearance fit, the possibility of the driven shaft 130 rotating relative to the first mounting hole 121 can be reduced, making the connection between the driven shaft 130 and the drive shaft 120 more reliable.
[0099] Based on the operation attachment 100 provided in the above example, along the direction in which the driven shaft 130 is inserted into the drive shaft 120, the end of the driven shaft 130 is provided with a first guide surface, and the inclination direction of the first guide surface is adapted to the direction in which the driven shaft 130 is inserted into the drive shaft 120.
[0100] The inclination direction of the first guide surface is adapted to the direction in which the driven shaft 130 is inserted into the drive shaft 120, so that the size of the driven shaft 130 gradually increases along the direction in which it is inserted into the drive shaft 120. During the insertion of the driven shaft 130 into the drive shaft 120, the smallest end of the driven shaft 130 extends into the first mounting hole 121 first, making it easier for the driven shaft 130 to enter the first mounting hole 121 and improving the assembly efficiency of the driven shaft 130 and the drive shaft 120.
[0101] Based on the operation accessory 100 provided in the above example, a second guide surface is provided at the opening of the first mounting hole 121 along the direction in which the driven shaft 130 is inserted into the drive shaft 120, and the inclination direction of the second guide surface is adapted to the direction in which the driven shaft 130 is inserted into the drive shaft 120.
[0102] The inclination direction of the second guide surface is adapted to the direction in which the driven shaft 130 is inserted into the drive shaft 120, so that the size of the first mounting hole 121 gradually decreases along the direction in which the driven shaft 130 is inserted into the drive shaft 120. During the process of inserting the driven shaft 130 into the drive shaft 120, the driven shaft 130 first extends into the larger part of the first mounting hole 121, making it easier for the driven shaft 130 to enter the first mounting hole 121 and improving the assembly efficiency of the driven shaft 130 and the drive shaft 120.
[0103] In this application example, a first guide surface may be provided only at the end of the driven shaft 130, or a second guide surface may be provided only at the opening of the first mounting hole 121, or both a first guide surface and a second guide surface may be provided at the end of the driven shaft 130.
[0104] Based on the operation attachment 100 provided in the above example, please refer to... Figure 3 The operating accessory 100 also includes a connector 160, which passes through the driven wheel 140 and the connecting rod 150. The connector 160 connects the driven wheel 140 and the connecting rod 150, and the connecting rod 150 is swayable relative to the connector 160.
[0105] Connector 160 can be a riveted part or a threaded part.
[0106] The connecting rod 150 can be a straight rod or a curved rod, as long as the connecting rod 150 can achieve the cooperation between the driven wheel 140 and the operating handle.
[0107] The first end of the connecting rod 150 may be provided with a second mounting hole. The second mounting hole may be a round hole, an arc-shaped hole, or a hole of other shapes. As long as the connecting member 160 can swing within the second mounting hole, the connecting member 160 can swing relative to the connecting rod 150, that is, the connecting rod 150 can swing relative to the connecting member 160.
[0108] When the second mounting hole is a round hole, the connector 160 can be made to swing within the second mounting hole by setting the diameter of the second mounting hole to be larger than the diameter of the part of the connector 160 that passes through the second mounting hole. However, it is necessary to ensure that the connector 160 will not detach from the second mounting hole during the use of the accessory 100.
[0109] In this example, the connector 160 can pass through the driven wheel 140 and the connecting rod 150 to achieve the connection between the driven wheel 140 and the connecting rod 150. Since the second end of the connecting rod 150 is connected to the operating mechanism 210, and the operating mechanism 210 applies a force to the operating accessory 100 during use, by setting the connecting rod 150 to be wobbly relative to the connector 160, the force applied by the operating mechanism 210 to the driven wheel 140 through the connecting rod 150 can be reduced. This further reduces the possibility that the force applied by the operating mechanism 210 to the connecting rod 150 will be transmitted to the operator through the driven wheel 140, the drive wheel 110, the driven shaft 130, and the drive shaft 120, thereby reducing the possibility that the force applied by the operating mechanism 210 to the connecting rod 150 will be applied to the operator and cause an impact, thus ensuring the safety of the circuit breaker assembly.
[0110] Furthermore, since the rotation axis of the driven wheel 140 is perpendicular to the rotation axis of the operating handle, by setting the connecting rod 150 to be wobbly relative to the connecting member 160, the possibility of damage to the connecting member 160 due to the relative movement between the driven wheel 140 and the operating handle can be reduced, thus ensuring the reliability of the operating accessory 100.
[0111] In some possible implementations, the end of the connecting rod 150 near the driven wheel 140 is provided with an arc-shaped hole, through which the connecting member 160 passes.
[0112] The center of the arc-shaped hole can be located on the side of the arc-shaped hole facing the rotation center of the driven wheel 140, or on the side of the arc-shaped hole away from the rotation center of the driven wheel 140. Alternatively, the center of the arc-shaped hole can be located in other positions, as long as the connecting member 160 can swing within the arc-shaped hole, so that the connecting rod 150 can swing relative to the connecting member 160.
[0113] In this application example, the linkage 150 can sway relative to the connector 160 by cooperating with the arc-shaped hole, which can reduce the force applied by the operating mechanism 210 to the driven wheel 140 through the linkage 150. This further reduces the possibility that the force applied by the operating mechanism 210 to the linkage 150 will be transmitted to the operator through the cooperation of the driven wheel 140, the drive wheel 110, the driven shaft 130, and the drive shaft 120. This reduces the possibility that the force applied by the operating mechanism 210 to the linkage 150 will be applied to the operator and cause an impact, thus ensuring the safety of the circuit breaker assembly.
[0114] In some possible implementations, the operating accessory 100 also includes a handheld device connected to one end of the drive shaft 120 and exposing the housing of the circuit breaker assembly.
[0115] The handheld component can be a knob, a screwdriver, or other similar structure, as long as it ensures that the drive shaft 120 can rotate through the handheld component.
[0116] The handheld component can be connected to the side of the drive shaft 120 opposite to the second receiving cavity. The handheld component can also protrude from the side of the first housing opposite to the second housing 220.
[0117] In this application example, by setting a handheld device connected to one end of the drive shaft 120 and exposing the circuit breaker assembly housing, it is convenient for the operator to apply force to the drive shaft 120 through the handheld device, so that the drive shaft 120 can move, thereby driving the other mechanisms of the operating accessory 100 to move.
[0118] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An operating accessory, characterized in that, Applied to a circuit breaker assembly, the circuit breaker assembly including an operating mechanism, the operating accessory including: Drive shaft; A drive wheel is connected to the drive shaft, and the rotation of the drive shaft drives the drive wheel to rotate. The driven wheel meshes with the driving wheel; A connecting rod, the first end of which is connected to the driven wheel, and the second end of which is connected to the operating handle of the operating mechanism; The drive wheel includes a buffer groove, and the operating accessory includes a driven shaft. The driven shaft is inserted into the drive shaft in the radial direction and is rotatably mounted in the buffer groove. When the driven wheel is in the critical position of closing or opening, the operating mechanism applies a force to the connecting rod. The force is transmitted to the driving wheel through the connecting rod and the driven wheel, causing the driving wheel to rotate relative to the driven shaft. This causes the driven shaft to be located between the two opposite side walls of the buffer groove. When the driven wheel is in the critical position of opening, compared to when the driven wheel is in the critical position of closing, the connection position between the connecting rod and the driven wheel is farther away from the rotation center of the operating handle.
2. The operating accessory according to claim 1, characterized in that, The buffer groove includes a first buffer groove and a second buffer groove arranged opposite to each other. Along the radial direction of the drive shaft, the driven shaft passes through the drive shaft, with the first end of the driven shaft located in the first buffer groove and the second end of the driven shaft located in the second buffer groove.
3. The operating accessory according to claim 1 or 2, characterized in that, The buffer groove has a receiving groove on its side wall facing the rotation center of the drive shaft. The end of the driven shaft extends into the receiving groove, and the driven shaft is rotatable relative to the receiving groove.
4. The operating accessory according to claim 1 or 2, characterized in that, The drive shaft includes a first mounting hole, which is disposed along the radial direction of the drive shaft, and at least a portion of the driven shaft is interference-fitted with the first mounting hole.
5. The operating accessory according to claim 1, characterized in that, Along the direction in which the driven shaft is inserted into the drive shaft, the end of the driven shaft is provided with a first guide surface, and the inclination direction of the first guide surface is adapted to the direction in which the driven shaft is inserted into the drive shaft.
6. The operating accessory according to claim 5, characterized in that, Also includes: A connector is provided through the driven wheel and the connecting rod, the connector connecting the driven wheel and the connecting rod, and the connecting rod is swayable relative to the connector.
7. The operating accessory according to claim 6, characterized in that, The connecting rod has an arc-shaped hole at its end near the driven wheel, and the connecting member passes through the arc-shaped hole.
8. The operating accessory according to claim 1, characterized in that, It also includes a handheld device that is connected to one end of the drive shaft and exposes the housing of the circuit breaker assembly.
9. A circuit breaker assembly, characterized in that, It includes a circuit breaker and an operating accessory as described in any one of claims 1 to 8, the operating accessory being connected to the circuit breaker.