Rocking handle and drawer type circuit breaker

Abstract

The utility model provides a rocking handle and a drawer type circuit breaker, and relates to the technical field of electrical equipment. The rocking handle comprises a holding rod, an adjusting rod and a connecting rod. The adjusting rod comprises a first adjusting end and a second adjusting end which are opposite in position, the first adjusting end is connected with the holding rod, and a first limiting protrusion is arranged on the portion, close to the second adjusting end, of the adjusting rod. The connecting rod comprises a first connecting end and a second connecting end which are opposite in position, the first connecting end is rotationally connected with the second adjusting end, and the second connecting end is used for being connected with a drawer base. The adjusting rod can rotate from a first position to a second position relative to the connecting rod. When the adjusting rod is located at the first position, the adjusting rod is perpendicular to the connecting rod. When the adjusting rod is located at the second position, the first limiting protrusion abuts against the connecting rod, so that the included angle between the adjusting rod and the connecting rod is larger than 90 degrees. According to the application, the possibility of interference between the rocking handle and the circuit breaker body can be reduced while the force for rocking the circuit breaker body out of the drawer seat by the rocking handle is saved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a crank and drawer-type circuit breaker. Background Art

[0002] A circuit breaker is an electrical device used to protect circuits from faults such as overcurrent, overload, or short circuit. It automatically disconnects the circuit when it detects abnormal current flow, thereby protecting the circuit and equipment from damage.

[0003] A drawer-type circuit breaker is one in which the breaker body is housed in a drawer. To repair or replace the breaker body, a crank handle is typically used to swing the breaker body out of the drawer. However, existing crank handle angle designs have drawbacks: swinging the breaker body out of the drawer requires considerable effort, and the crank handle often interferes with the breaker body. Therefore, further improvements are needed. Utility Model Content

[0004] The present application provides a crank handle and a drawer-type circuit breaker, which saves effort and reduces the possibility of interference between the crank handle and the circuit breaker body when the crank handle swings the circuit breaker body out of the drawer seat.

[0005] In a first aspect, the present application provides a crank handle for use in a drawer-type circuit breaker. The drawer-type circuit breaker includes a drawer seat. The crank handle includes a holding rod, an adjusting rod and a connecting rod. The adjusting rod includes a first adjusting end and a second adjusting end that are positioned opposite to each other. The first adjusting end is connected to the holding rod, and a first limiting protrusion is provided at a portion of the adjusting rod near the second adjusting end. The connecting rod includes a first connecting end and a second connecting end that are positioned opposite to each other, the first connecting end is rotatably connected to the second adjusting end, and the second connecting end is used to connect to the drawer seat. The adjusting rod can rotate from a first position to a second position relative to the connecting rod. When the adjusting rod is in the first position, the adjusting rod and the connecting rod are perpendicular to each other. When the adjusting rod is in the second position, the first limiting protrusion abuts against the connecting rod, so that the angle between the adjusting rod and the connecting rod is greater than 90 degrees.

[0006] The adjustment lever can be rotated from a first position to a second position relative to the connecting rod to meet the user's different usage needs. Specifically, when the adjustment lever is in the first position, the adjustment lever and the connecting rod are perpendicular to each other, which reduces effort when shaking the handle. When the adjustment lever is in the second position, the angle between the adjustment lever and the connecting rod is greater than 90 degrees, which prevents interference between the handle and the circuit breaker body. Furthermore, when the circuit breaker body is being shaken out, the adjustment lever can be first placed in the first position and then switched from the first position to the second position, achieving the dual technical benefits of saving effort and reducing interference.

[0007] In a possible design, the first limiting protrusion and the adjusting rod are integrally formed, or the first limiting protrusion and the adjusting rod are detachably connected.

[0008] The present application provides various connection methods. By integrally forming the first stop protrusion with the adjustment rod, both production efficiency and connection strength can be improved. When the first stop protrusion and the adjustment rod are detachably connected, the detachable connection design also improves the maintainability of the crank handle. If the first stop protrusion becomes damaged, worn, or out of size, only the first stop protrusion can be replaced without replacing the rest of the adjustment rod.

[0009] In one possible design, the first connecting end is provided with a mounting slot comprising first and second opposing slot walls, with the second adjustable end positioned within the mounting slot. The first slot wall is provided with a first mounting hole, the second adjustable end is provided with a second mounting hole, and the second slot wall is provided with a third mounting hole. The crank handle also includes a fastener that passes through the first, second, and third mounting holes to achieve rotational connection between the first connecting end and the second adjustable end.

[0010] The above-mentioned rotating connection structure can facilitate the switching of the adjustment rod between the first position and the second position.

[0011] In one possible design, the first adjustment end is rotatably connected to the handle rod. When the adjustment rod rotates from a first position to a second position relative to the connecting rod, the handle rod can rotate relative to the adjustment rod so that the handle rod and the connecting rod extend in different directions relative to the adjustment rod.

[0012] Because the handle can rotate relative to the adjustment rod, the user can adjust the relative angle between the handle and the adjustment rod as needed when switching between the first and second positions, for example, adjusting the angle between the handle and the adjustment rod from 90 degrees to greater than 90 degrees. Furthermore, the handle and the connecting rod extend in different directions relative to the adjustment rod, allowing them to be located on different sides of the adjustment rod. This prevents interference between the handle and the circuit breaker body when the crank handle is rotated without increasing the length of the adjustment rod, thereby improving the ease of use of the crank handle.

[0013] In one possible design, a second limiting protrusion is provided on the adjustment rod near the first adjustment end. When the handle rod is rotated to extend in a different direction relative to the connecting rod, the second limiting protrusion can abut against the handle rod, making the handle rod parallel to the connecting rod.

[0014] When the second limiting protrusion abuts the holding rod, the holding rod and the connecting rod can remain relatively parallel in a plane. This arrangement is easy for the operator to operate, allowing the operator to rotate the adjusting rod and the connecting rod with less effort by rotating the holding rod, and is convenient for improving the aesthetics of the crank handle.

[0015] In a possible design, the second limiting protrusion and the adjusting rod are integrally formed; or, the second limiting protrusion and the adjusting rod are detachably connected.

[0016] By integrally molding the second stop protrusion with the adjustment rod and sharing the same material properties, the second stop protrusion and the adjustment rod not only improve overall strength and durability, but also reduce assembly steps and improve production efficiency. The removable connection between the second stop protrusion and the adjustment rod allows only the second stop protrusion to be replaced without replacing the rest of the adjustment rod if the second stop protrusion becomes damaged, worn, or out of size, improving the maintainability of the crank handle.

[0017] In a possible design, the holding rod includes a receiving cavity, and the receiving cavity includes a first cavity opening facing the adjusting rod; the adjusting rod can extend from the first cavity opening into the receiving cavity to be received in the receiving cavity.

[0018] By accommodating the adjusting rod in the accommodating cavity, the utilization rate of the space inside the handle can be improved, and the space occupied by the crank handle can also be reduced.

[0019] In one possible design, the accommodating chamber further includes a second cavity opening, the second cavity opening being opposite to the first cavity opening, and the crank further includes a plug fastened to the second cavity opening.

[0020] The second cavity opening can be sealed by the cooperation of the plug and the second cavity opening, which not only reduces the possibility of the adjustment rod falling off from the second cavity opening of the accommodating cavity, but also reduces the possibility of debris entering the accommodating cavity from the second cavity opening.

[0021] In a possible design, the drawer base is provided with a polygonal hole, and the second connecting end is provided with a polygonal cylinder, and the polygonal cylinder cooperates with the polygonal hole, thereby improving the connection reliability between the second connecting end and the drawer base.

[0022] In a second aspect, the present application provides a drawer-type circuit breaker, comprising a drawer base, a circuit breaker body, and the crank handle of the first aspect. The crank handle is connected to the drawer base and is used to swing the circuit breaker body out of the drawer base, or to swing the circuit breaker body into the drawer base.

[0023] As described above, the design of the crank handle can achieve the dual technical effects of saving effort and reducing interference between the crank handle and the circuit breaker body.

[0024] The beneficial effects of the drawer-type circuit breaker provided in the second aspect and the various possible designs of the second aspect can be referred to the beneficial effects brought about by the first aspect and the various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a drawer-type circuit breaker provided in an embodiment of the present application.

[0026] Figure 2 This is a structural schematic diagram of a crank provided in an embodiment of the present application when the adjustment rod is in the first position.

[0027] Figure 3 This is a structural schematic diagram of a crank provided in an embodiment of the present application when the adjustment rod is in the second position.

[0028] Figure 4 This is a structural diagram of an adjustment rod provided in an embodiment of the present application.

[0029] Figure 5 This is a structural schematic diagram of a connecting rod provided in an embodiment of the present application.

[0030] Figure 6 This is an exploded view of a handle rod and a plug provided in an embodiment of the present application.

[0031] Figure 7 This is a schematic diagram of the structure of the crank handle when the adjustment rod provided in an embodiment of the present application is stored in the holding rod.

[0032] Description of reference numerals:

[0033] 100, drawer seat; 200, circuit breaker body;

[0034] 300, crank handle; 310, handle rod; 311, receiving chamber; 320, plug;

[0035] 320, adjustment rod; 321, first adjustment end; 322, second adjustment end; 3221, second mounting hole; 323, first limiting protrusion; 324, second limiting protrusion;

[0036] 330, connecting rod; 331, first connecting end; 3311, mounting groove; 332, second connecting end; 3321, polygonal cylinder. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0039] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists, A and B exist, and B exists. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0041] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the current limiting module of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0042] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0043] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure can refer to a physical connection. For example, the physical connection can be a fixed connection, such as a fixed connection through a barrier, such as a fixed connection through screws, bolts, or other barrier; the physical connection can also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] like Figure 1 As shown, an embodiment of the present application provides a drawer-type circuit breaker, comprising a drawer base 100, a circuit breaker body 200, and a crank handle 300. The crank handle 300 is connected to the drawer base 100 and is used to swing the circuit breaker body 200 out of the drawer base 100, or to swing the circuit breaker body 200 into the drawer base 100.

[0046] A rotating shaft and a support plate are provided in the drawer seat 100. The support plate matches the rotating shaft, and the circuit breaker body 200 is supported on the support plate. An insertion hole (not shown) may be provided on the rotating shaft.

[0047] When the end of the crank handle 300 is inserted into the insertion hole and drives the rotating shaft to rotate in one direction, the support plate can drive the circuit breaker body 200 to move out of the drawer seat, so that the circuit breaker body 200 can be shaken out of the drawer seat 100 by the crank handle 300, thereby facilitating the inspection, maintenance and replacement of the circuit breaker body 200.

[0048] When the crank handle 300 drives the rotating shaft to rotate in the opposite direction, the support plate can drive the circuit breaker body 200 to move toward the drawer seat 100, so that the circuit breaker body 200 can be shaken into the drawer seat 100 through the crank handle 300, thereby facilitating the normal operation of the drawer-type circuit breaker.

[0049] The crank 300 provided in this application will be described in detail below with reference to the accompanying drawings.

[0050] like Figures 2 to 4 As shown, the present application provides a crank handle 300 for use in a drawer-type circuit breaker. The crank handle 300 includes a holding rod 310 , an adjusting rod 320 , and a connecting rod 330 .

[0051] The handle bar 310 is used for the operator to grasp and operate. The length of the handle bar 310 can be adjusted as needed to allow the operator to apply force comfortably during operation. The handle bar 310 can be made of a metal material to ensure its strength and durability. The handle bar 310 can be in any suitable shape, such as a cylinder or a prismatic shape.

[0052] The handle bar 310 may be provided with anti-skid teeth or a wrapping so as to reduce the possibility of the operator's hand slipping off the handle bar 310 when the handle 300 is rotated by the handle bar 310 .

[0053] The connection between the holding rod 310 and the adjusting rod 320 can be achieved by welding, threaded connection or other detachable connecting parts, which is not limited in the embodiment of the present application.

[0054] The adjusting rod 320 is used to connect the holding rod 310 and the connecting rod 330. The adjusting rod 320 can be made of a strong metal material, so that the adjusting rod 320 has sufficient rigidity to withstand the operating force, thereby improving the stability and durability of the adjusting rod 320 during use. The adjusting rod 320 can be an elongated strip as a whole.

[0055] One end of the adjustment rod 320 is connected to the handle rod 310, and the other end is connected to the connecting rod 330. Specifically, the adjustment rod 320 includes a first adjustment end 321 and a second adjustment end 322 located opposite each other. The first adjustment end 321 is used to connect to the handle rod 310, and the second adjustment end 322 is used to connect to the connecting rod 330.

[0056] The connecting rod 330 is a component used to connect the crank handle 300 and the drawer base 100. The connecting rod 330 includes a first connecting end 331 and a second connecting end 332 positioned opposite each other. The first connecting end 331 is rotatably connected to the second adjustment end 322, and the second connecting end 332 is used to connect to the drawer base 100.

[0057] The connecting rod 330 may be made of a metal material to have sufficient strength and rigidity.

[0058] The first connection end 331 and the second adjustment end 322 can be rotatably connected by a hole-shaft coupling, or by a hinge or other structure, which is not limited in this embodiment of the present application. The second connection end 332 can be connected to the drawer base 100 by coupling with the aforementioned rotation shaft and support plate.

[0059] The crank handle 300 provided in the present application has an adjusting rod 320 that can rotate from a first position to a second position relative to the connecting rod 330. In addition, a first limiting protrusion 323 is provided at a portion of the adjusting rod 320 near the second adjusting end 322. Figure 2As shown, when the adjusting rod 320 is in the first position, the adjusting rod 320 and the connecting rod 330 are perpendicular to each other. Figure 3 As shown, when the adjusting rod 320 is in the second position, the first limiting protrusion 323 abuts against the connecting rod 330, so that the angle between the adjusting rod 320 and the connecting rod 330 is greater than 90 degrees.

[0060] Because the first connecting end 331 of the connecting rod 330 is rotatably connected to the second adjusting end 322 of the adjusting rod 320, the adjusting rod 320 can rotate relative to the connecting rod 330 from a first position to a second position. The first position can be the position of the adjusting rod 320 when the circuit breaker body 200 is being pulled out of the drawer 100 and the adjusting rod 320 is parallel to the cover of the circuit breaker body 200. The second position can be the position of the adjusting rod 320 when the circuit breaker body 200 is being pulled out of the drawer 100 and a non-zero angle is formed between the adjusting rod 320 and the cover of the circuit breaker body 200.

[0061] The timing for the adjustment rod 320 to rotate from the first position to the second position relative to the connecting rod 330 may be when the distance between the circuit breaker body 200 and the adjustment rod 320 is about to become less than the safety distance, or in other words, when the circuit breaker body 200 and the adjustment rod 320 are about to touch. The safety distance refers to the minimum distance between the circuit breaker body 200 and the adjustment rod 320, under the premise that the circuit breaker body 200 and the adjustment rod 320 do not touch each other.

[0062] The first limiting protrusion 323 can be a protrusion of any shape, such as a cone, a column, or a cube, or can be a structure that can serve as a limiting function, such as a screw. When the adjusting rod 320 rotates relative to the connecting rod 330 from the first position to the second position, the first limiting protrusion 323 abuts the connecting rod 330, so that the angle between the adjusting rod 320 and the connecting rod 330 is greater than 90 degrees.

[0063] In the embodiment of the present application, the adjustment rod 320 can rotate relative to the connecting rod 330 from a first position to a second position. On the one hand, when the adjustment rod 320 is in the first position, the adjustment rod 320 and the connecting rod 330 can be perpendicular to each other, thereby reducing the force required to rotate the crank 300. On the other hand, when the adjustment rod 320 is in the second position, the angle between the adjustment rod 320 and the connecting rod 330 can be greater than 90 degrees, thereby preventing interference between the adjustment rod 320 of the crank 300 and the circuit breaker body 200. Thus, the crank 300 provided in the embodiment of the present application can save force while reducing the possibility of interference between the crank 300 and the circuit breaker body 200.

[0064] A first limiting protrusion 323 is provided on the adjusting rod 320 near the second adjusting end 322. When the adjusting rod 320 is in the second position, the first limiting protrusion 323 abuts the connecting rod 330, so that the first limiting protrusion 323 can limit the adjusting rod 320, reducing the possibility of the adjusting rod 320 rotating relative to the connecting rod 330 toward the circuit breaker body 200. This facilitates maintaining the angle between the adjusting rod 320 and the connecting rod 330 at greater than 90 degrees, effectively reducing the possibility of interference between the crank handle 300 and the circuit breaker body 200.

[0065] It should be noted that the cover of the circuit breaker body 200 is generally provided with various markings, such as a marking for identifying the circuit breaker type, a marking for identifying the circuit breaker model, and a marking for indicating the circuit breaker disconnection status. When the crank handle 300 interferes with the circuit breaker body 200, the crank handle 300 may damage the aforementioned markings on the circuit breaker body 200, making it impossible for the operator to obtain the information on these markings when using the drawer-type circuit breaker. This causes inconvenience to the operator when using the drawer-type circuit breaker and may even pose a safety hazard. The present application makes the aforementioned structural improvements to the existing crank handle 300. The improved crank handle 300 can effectively reduce the possibility of interference between the crank handle 300 and the circuit breaker body 200, thereby effectively avoiding the problem of marking damage.

[0066] In some embodiments, the first limiting protrusion 323 can be integrally formed with the adjusting rod 320 .

[0067] The one-piece molding method can save assembly steps, thereby improving production efficiency. In addition, the one-piece molding method makes the connection strength between the first limiting protrusion 323 and the adjustment rod 320 higher.

[0068] In other embodiments, the first limiting protrusion 323 may be detachably connected to the adjusting rod 320 .

[0069] For example, the first limiting protrusion 323 and the adjusting rod 320 can be detachably connected by means of a threaded connection, a snap connection, or a latch connection.

[0070] When the first limiting protrusion 323 is detachably connected to the adjustment rod 320, the first limiting protrusion 323 can be easily removed from the adjustment rod 320 and replaced with a first limiting protrusion 323 of a suitable size or shape, thereby improving the performance of the crank 300. In addition, a damaged first limiting protrusion can be replaced without scrapping the adjustment rod 320, thereby extending the service life of the adjustment rod 320 and reducing the maintenance cost of the crank 300.

[0071] In addition to the second adjustment end 322 being rotatably connected to the first connection end 331 so that the adjustment rod 320 can rotate relative to the connection rod 330, the first adjustment end 321 can also be rotatably connected to the holding rod 310 so that the holding rod 310 can rotate relative to the adjustment rod 320. In some embodiments, Figure 2 and Figure 3 As shown, when the adjusting rod 320 rotates from the first position to the second position relative to the connecting rod 330 , the holding rod 310 can rotate relative to the adjusting rod 320 , so that the holding rod 310 and the connecting rod 330 extend in different directions relative to the adjusting rod 320 .

[0072] Assuming that only the adjustment rod 320 can rotate relative to the connecting rod 330, and the adjustment rod 320 cannot rotate relative to the holding rod 310, then the holding rod 310 and the adjustment rod 320 must be rotated together relative to the connecting rod 330. In this way, the holding rod 310 and the connecting rod 330 will be located on the same side of the adjustment rod 320, and the holding rod 310 will be located on the side of the adjustment rod 320 closer to the circuit breaker body 200. In this case, the adjustment rod 320 of the crank handle 300 needs to be longer to ensure that the holding rod 310 does not interfere with the circuit breaker body 200 when the crank handle 300 rotates, allowing the crank handle 300 to properly rock the circuit breaker body 200. In other words, the length of the adjustment rod 320 is relatively high.

[0073] Based on this, this embodiment rotatably connects the second adjustment end 322 with the first connecting end 331, so that when the adjustment rod 320 rotates from the first position to the second position relative to the connecting rod 330, the holding rod 310 can rotate relative to the adjustment rod 320, and the holding rod 310 and the connecting rod 330 can extend in different directions relative to the adjustment rod 320.

[0074] The holding rod 310 and the connecting rod 330 extend in different directions relative to the adjustment rod 320. This allows the holding rod 310 and the connecting rod 330 to be located on different sides of the adjustment rod 320 after the adjustment rod 320 and the holding rod 310 rotate relative to the adjustment rod 320. Specifically, the connecting rod 330 can be located on the side of the adjustment rod 320 closer to the circuit breaker body 200, while the holding rod 310 can be located on the side of the adjustment rod 320 farther from the circuit breaker body 200. This prevents interference between the holding rod 310 and the circuit breaker body 200 during rotation of the crank handle 300 without increasing the length of the adjustment rod 320, thereby improving the ease of use of the crank handle 300.

[0075] On the basis of the rotational connection between the first adjustment end 321 and the handle rod 310, further, in some embodiments, such as Figures 2 to 4As shown, the adjusting rod 320 is provided with a second limiting protrusion 324 near the first adjusting end 321. When the holding rod 310 is rotated to extend in a different direction relative to the connecting rod 330, the second limiting protrusion 324 can abut against the holding rod 310, so that the holding rod 310 and the connecting rod 330 are parallel.

[0076] Similar to the first limiting protrusion 323, the second limiting protrusion 324 can also be a protrusion of any shape, such as a cone, a column, or a cube, or can be a structure that can function as a limiter, such as a screw. Furthermore, the second limiting protrusion 324 can be integrally formed with the adjustment rod 320. Alternatively, the second limiting protrusion 324 can be detachably connected to the adjustment rod 320.

[0077] The function of the second limiting protrusion 324 and the adjusting rod 320 being integrally formed is similar to the function of the first limiting protrusion 323 and the adjusting rod 320 being integrally formed. The implementation method and function of the detachable connection between the second limiting protrusion 324 and the adjusting rod 320 are similar to the implementation method and function of the detachable connection between the second limiting protrusion 324 and the adjusting rod 320. The structure and function of the second limiting protrusion will not be described in detail here.

[0078] like Figures 2 to 4 As shown, the second limiting protrusion 324 and the first limiting protrusion 323 can be located on different sides of the adjustment rod 320 so that when the first limiting protrusion 323 abuts against the connecting rod 330 , the second limiting protrusion 324 abuts against the holding rod 310 .

[0079] In this embodiment, the second limiting protrusion 324 abuts against the handle bar 310, so that the handle bar 310 is parallel to the connecting bar 330. This arrangement allows the operator to rotate the adjustment bar 320 and the connecting bar 330 with less effort by rotating the handle bar 310, and also improves the aesthetics of the crank handle 300.

[0080] In some embodiments, combined Figure 4 and Figure 5 The first connecting end 331 of the connecting rod 330 is provided with a mounting slot 3311. The mounting slot 3311 includes first and second opposing slot walls. The second adjustment end 322 is positioned within the mounting slot 3311. The first slot wall defines a first mounting hole, the second adjustment end 322 defines a second mounting hole 3221, and the second slot wall defines a third mounting hole. The crank handle 300 also includes a fastener that passes through the first, second, and third mounting holes to achieve a rotational connection between the first connecting end 331 and the second adjustment end 322.

[0081] The mounting groove 3311 may be a U-shaped groove, and two opposite groove walls of the U-shaped groove are the first groove wall and the second groove wall.

[0082] The first mounting hole, the second mounting hole 3221, and the third mounting hole are positioned relative to each other. The end of the fastener can first pass through the first mounting hole, then through the second mounting hole 3221, and finally through the third mounting hole, or first pass through the third mounting hole, then through the second mounting hole 3221, and finally through the first mounting hole. This embodiment of the application is not limited to this.

[0083] The fasteners may be pins, screws, etc.

[0084] The fastener passes through the first mounting hole, the second mounting hole 3221, and the third mounting hole, thereby rotatably connecting the first connecting end 331 to the second adjusting end 322. This allows the adjusting rod 320 to rotate relative to the connecting rod 330 from a first position to a second position, thereby reducing the force required to operate the crank handle 300 and minimizing the possibility of interference between the crank handle 300 and the circuit breaker body 200.

[0085] Figure 6 is an exploded view of a handle bar and a plug provided in an embodiment of the present application. According to some embodiments of the present application, such as Figure 6 As shown, the holding rod 310 may include a receiving cavity 311, and the receiving cavity 311 includes a first cavity opening facing the adjustment rod 320. For example, the holding rod 310 may be designed as a hollow structure to form the receiving cavity 311 in the holding rod 310.

[0086] Figure 7 : is a schematic diagram of the structure of the crank handle when the adjustment rod is accommodated in the handle rod according to the embodiment of the present application. Figure 7 As shown, the connecting rod 330 and the adjusting rod 320 can extend from the first cavity opening into the accommodating cavity 311 to be received in the accommodating cavity 311 .

[0087] The cross section of the accommodating cavity 311 can be designed to be circular, square, or other suitable shapes. The first cavity opening is an opening provided at one end of the accommodating cavity 311 toward the adjusting rod 320. The provision of the first cavity opening facilitates the adjusting rod 320 to smoothly extend into the accommodating cavity 311 from the first cavity opening.

[0088] Through the above specific implementation, when the crank 300 is not in use, the adjustment rod 320 can be extended from the first cavity into the accommodating cavity 311 so that the adjustment rod 320 can be compactly stored in the accommodating cavity. This can improve the utilization rate of the space in the holding rod 310 and reduce the space occupied by the crank 300.

[0089] Please continue to refer to Figure 6 According to some embodiments of the present application, the accommodating cavity 311 further includes a second cavity opening, which is located opposite to the first cavity opening. The crank handle 300 may further include a plug 320, which is fastened to the second cavity opening.

[0090] The plug 320 can be fastened to the second cavity opening by means of threaded connection, snap connection, interference fit, etc.

[0091] The plug 320 is fastened to the second cavity opening and can block the second cavity opening. This not only reduces the possibility of the adjustment rod 320 falling off from the second cavity opening of the accommodating cavity 311, but also reduces the possibility of debris entering the accommodating cavity 311 from the second cavity opening.

[0092] Please continue to refer to Figure 5 In some embodiments, the drawer seat 100 may be provided with a polygonal hole, and the second connection end 332 may be provided with a polygonal cylinder 3321 , and the polygonal cylinder 3321 cooperates with the polygonal hole to realize the connection between the second connection end 332 and the drawer seat 100 .

[0093] The polygonal hole is the insertion hole provided on the aforementioned rotating shaft. In the case where the insertion hole is a polygonal hole, the second connecting end 332 is provided with a polygonal cylindrical surface 3321. When the second connecting end 332 is inserted into the insertion hole, the polygonal cylindrical surface 3321 can cooperate with the polygonal hole.

[0094] The polygonal cylindrical surface 3321 cooperates with the polygonal hole to realize a reliable connection between the second connecting end 332 and the drawer seat 100, so that when the crank 300 rotates, the connecting rod 330 can drive the rotating shaft to rotate, thereby indirectly shaking the circuit breaker body 200 out of the drawer seat 100.

[0095] The above is a preferred embodiment of the present invention. Technicians in the field of the present invention can also change and modify the above embodiment. Therefore, the present invention is not limited to the above specific embodiment. Any obvious improvements, replacements or modifications made by technicians in this field on the basis of the present invention are within the scope of protection of the present invention.

Claims

1. A crank handle, applied to a drawer-type circuit breaker, the drawer-type circuit breaker comprising a drawer seat, characterized in that: The crank comprises: handlebar; an adjusting rod, the adjusting rod comprising a first adjusting end and a second adjusting end positioned opposite to each other, the first adjusting end being connected to the holding rod, and a first limiting protrusion being provided at a portion of the adjusting rod near the second adjusting end; A connecting rod, the connecting rod comprising a first connecting end and a second connecting end positioned opposite to each other, the first connecting end being rotatably connected to the second adjusting end, and the second connecting end being used to connect to the drawer seat; Wherein, the adjusting rod can rotate relative to the connecting rod from a first position to a second position; When the adjusting rod is in the first position, the adjusting rod and the connecting rod are perpendicular to each other; when the adjusting rod is in the second position, the first limiting protrusion abuts against the connecting rod, so that the angle between the adjusting rod and the connecting rod is greater than 90 degrees.

2. The crank handle according to claim 1, wherein: The first limiting protrusion is integrally formed with the adjusting rod; Alternatively, the first limiting protrusion is detachably connected to the adjusting rod.

3. The crank handle according to claim 1, wherein: The first connecting end is provided with a mounting groove, the mounting groove comprising a first groove wall and a second groove wall opposite to each other, and the second adjusting end is located in the mounting groove; The first groove wall is provided with a first mounting hole, the second adjustment end is provided with a second mounting hole, and the second groove wall is provided with a third mounting hole; The crank further includes a fastener passing through the first mounting hole, the second mounting hole, and the third mounting hole to achieve a rotational connection between the first connecting end and the second adjusting end.

4. The crank according to any one of claims 1 to 3, characterized in that: The first adjustment end is rotatably connected to the holding rod; When the adjusting rod rotates from the first position to the second position relative to the connecting rod, the holding rod can rotate relative to the adjusting rod, so that the holding rod and the connecting rod extend in different directions relative to the adjusting rod.

5. The crank handle according to claim 4, characterized in that: A second limiting protrusion is provided on the adjusting rod near the first adjusting end; When the holding rod is rotated to extend in a different direction from the connecting rod relative to the adjusting rod, the second limiting protrusion can abut against the holding rod, so that the holding rod is parallel to the connecting rod.

6. The crank handle according to claim 5, characterized in that: The second limiting protrusion is integrally formed with the adjusting rod; Alternatively, the second limiting protrusion is detachably connected to the adjusting rod.

7. The crank handle according to claim 4, characterized in that: The holding rod includes a receiving cavity, and the receiving cavity includes a first cavity opening facing the adjusting rod; The adjusting rod can extend from the first cavity opening into the accommodating cavity to be received in the accommodating cavity.

8. The crank handle according to claim 7, wherein: The accommodating cavity further includes a second cavity opening, and the second cavity opening is opposite to the first cavity opening; The crank handle further includes a plug, which is fastened to the second cavity.

9. The crank handle according to claim 8, characterized in that: The drawer seat is provided with a polygonal hole, and the second connecting end is provided with a polygonal cylinder. The polygonal cylinder cooperates with the polygonal hole to realize the connection between the second connecting end and the drawer seat.

10. A drawer type circuit breaker, characterized in that: It comprises a drawer seat, a circuit breaker body and a crank handle according to any one of claims 1 to 9; The crank handle is connected to the drawer seat, and the crank handle is used to shake the circuit breaker body out of the drawer seat, or the crank handle is used to shake the circuit breaker body into the drawer seat.

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