Transmission mechanism and reclosing circuit breaker

Abstract

The utility model provides a transmission mechanism and a reclosing circuit breaker, and belongs to the technical field of electrical equipment. The transmission mechanism comprises a handle, a driving disc, a connecting rod and a limiting shaft. The handle is provided with a push block, the push block is provided with a mounting groove and a limiting hole, and the limiting hole is communicated with the mounting groove. The connecting rod comprises a first end and a second end which are opposite in position, the first end is provided with a first mounting hole, the second end is provided with a second mounting hole, the second end is located in the mounting groove, and the second mounting hole is opposite to the limiting hole in position. The driving disc is arranged on one side of the handle, and a driving shaft is arranged on the surface of the driving disc. And the driving shaft penetrates through the first mounting hole. The limiting shaft penetrates through the limiting hole and the second mounting hole to limit the second end. When the driving disc rotates, the driving shaft can drive the connecting rod to move, and when the connecting rod moves, the pushing block can be driven to swing between the first position and the second position. According to the transmission mechanism, the connecting mode between the structural parts is simple, use of bolts is reduced, and the production cost and the maintenance cost of the transmission mechanism are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical equipment, and particularly relates to a transmission mechanism and a reclosing circuit breaker. BACKGROUND

[0002] The reclosing circuit breaker refers to a switching device capable of closing, carrying and opening the current under normal circuit conditions, and capable of closing, carrying and opening the current under abnormal circuit conditions within a specified time. The reclosing refers to the meaning that the reclosing circuit breaker can be automatically reclosed after tripping.

[0003] The transmission mechanism is often needed to operate the reclosing circuit breaker during the opening and closing process. In the prior art, the connection structure between the various components in the transmission mechanism of the reclosing circuit breaker is relatively complex, so that the production cost of the reclosing circuit breaker is high, and the subsequent maintenance cost is also high. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a transmission mechanism and a reclosing circuit breaker to reduce the production cost and maintenance cost of the reclosing circuit breaker.

[0005] In a first aspect, the present application provides a transmission mechanism, which comprises a handle, a connecting rod, a driving disc and a limiting shaft. The handle is provided with a push block, the push block is provided with a mounting groove and a limiting hole, and the limiting hole is in communication with the mounting groove. The connecting rod comprises opposite first and second ends, the first end is provided with a first mounting hole, the second end is provided with a second mounting hole, the second end is located in the mounting groove, and the second mounting hole is opposite to the limiting hole. The driving disc is arranged on one side of the handle, and the surface of the driving disc is provided with a driving shaft. The driving shaft passes through the first mounting hole and is rotationally connected with the connecting rod. The limiting shaft is arranged through the limiting hole and the second mounting hole to limit the second end. When the driving disc rotates, the driving shaft can drive the connecting rod to move, the connecting rod can drive the push block to swing between the first position and the second position when the connecting rod moves, and the second position is closer to the driving disc relative to the first position.

[0006] By the above scheme, the transmission mechanism mentioned in the application can realize the opening and closing of the circuit breaker through the cooperation of the handle, the driving disc and the connecting rod. The driving shaft is arranged on the driving disc, and the first mounting hole is arranged on the first end of the connecting rod. When the connecting rod is connected with the driving disc, the driving shaft can pass through the first mounting hole. The mounting groove and the limiting hole are arranged on the push block. When the connecting rod is connected with the handle, the second end is inserted into the mounting groove, the second mounting hole is aligned with the limiting hole, and then the limiting shaft is inserted into the second mounting hole and the limiting hole. The connection mode of the handle, the driving disc and the connecting rod is simple, which can reduce the time cost of the transmission mechanism during installation. When using this connection mode, a large number of bolts are not needed for fixing during connection, which can reduce the production cost of the transmission mechanism and the maintenance cost of the subsequent transmission mechanism.

[0007] In a possible design, the driving disc is a gear, the driving shaft is arranged on the end face of the gear, and the driving shaft is arranged on the edge of the end face. The rotation of the driving disc can drive the first end to move along the rotation track of the driving disc.

[0008] By the above scheme, the gear has the advantages of simple arrangement and compact structure. When the driving disc is a gear, the installation difficulty of the transmission mechanism can be reduced, and the driving disc can realize efficient power transmission in limited space, thereby improving the use reliability of the transmission mechanism. When the driving shaft is arranged on the edge of the end face, the driving shaft can drive the first end to move along the rotation track of the driving disc, so that the connecting rod can drive the second end to move towards the driving disc, thereby enabling the connecting rod to drive the push block to move from the first position to the second position.

[0009] In a possible design, the driving disc is perpendicular to the axis direction of the limiting shaft. The first end and the second end are parallel to each other and parallel to the driving disc. The second end can rotate in the mounting groove.

[0010] By the above scheme, the structure of the connecting rod is simple and convenient to manufacture. Moreover, the opening direction of the connecting rod is parallel to the mounting groove, which can reduce the probability of interference between the push block and the connecting rod, thereby improving the use reliability of the transmission mechanism.

[0011] In a possible design, the driving disc is parallel to the axis direction of the limiting shaft. The second end is perpendicular to the first end, and the first end is parallel to the driving disc. The second end can rotate and swing in the mounting groove.

[0012] By the above scheme, since the driving disc is arranged parallel to the axis direction of the limiting shaft, the driving disc can be parallel to the inner bottom surface of the middle cover. Therefore, when the driving disc is installed in the middle cover, the contact area with the middle cover is larger, and the installation is more stable.

[0013] In a possible design, the slot wall of the mounting slot has a gap with the second end, and the hole wall of the second mounting hole has a gap with the side wall of the limiting shaft.

[0014] Through the above scheme, when the slot wall of the mounting slot has a gap with the second end, the second end can swing in the mounting slot. The probability of the problem that the internal elements of the transmission mechanism are stuck due to the fact that the slot wall of the mounting slot has no gap with the second end is reduced. Since the limiting shaft passes through the second mounting hole, when the hole wall of the second mounting hole has a gap with the side wall of the limiting shaft, the second end can swing, and the probability of the problem that the second end cannot swing due to the fact that the hole wall of the second mounting hole has no gap with the side wall of the limiting shaft is reduced.

[0015] In a possible design, the limiting shaft includes a third end and a fourth end opposite to each other. After the third end or the fourth end passes through the limiting hole and the second mounting hole, the third end and the fourth end are riveted to the push block.

[0016] Through the above scheme, the structure of the limiting shaft is relatively simple, and the manufacturing is relatively convenient. The riveting mode can make the installation of the limiting shaft more firm, so that the use reliability of the transmission mechanism can be improved.

[0017] In a possible design, the limiting shaft includes a fifth end and a sixth end opposite to each other. The fifth end is provided with a first limiting block, and the sixth end is provided with a through hole in which a shaft pin is inserted. After the sixth end passes through the limiting hole and the second mounting hole, the first limiting block abuts against a first side wall of the push block, the shaft pin abuts against a second side wall of the push block, and the first side wall and the second side wall are opposite to each other.

[0018] Through the above scheme, the disassembly and installation of the limiting shaft are more flexible. When the connecting rod or the handle needs to be repaired, the limiting shaft can be disassembled from the push block by pulling out the shaft pin, so that the maintenance cost of the transmission mechanism in the later period can be saved.

[0019] In a possible design, the limiting shaft includes a seventh end and an eighth end opposite to each other. The seventh end is provided with a second limiting block, and the side wall of the eighth end is provided with a limiting slot in which a clamping spring is clamped. After the eighth end passes through the limiting hole and the second mounting hole, the second limiting block abuts against the first side wall of the push block, the clamping spring abuts against the second side wall of the push block, and the first side wall and the second side wall are opposite to each other.

[0020] Through the above scheme, the disassembly and installation of the limiting shaft are more flexible. When the connecting rod or the handle needs to be repaired, the limiting shaft can be disassembled from the push block by taking the clamping spring off the limiting slot, so that the maintenance cost of the transmission mechanism in the later period can be saved.

[0021] In a second aspect, the application provides a reclosing circuit breaker, which comprises a middle cover and the transmission mechanism mentioned in the first aspect. The middle cover is internally provided with a mounting space, and the transmission mechanism is arranged in the mounting space.

[0022] In a possible design, the mounting space is provided with a mounting table, the mounting table is provided with a third mounting hole, and the driving disc of the transmission mechanism is provided with a mounting shaft. The mounting shaft is located in the third mounting hole, and the mounting shaft is rotationally connected to the mounting table.

[0023] The reclosing circuit breaker provided in the second aspect has the beneficial effects of the first aspect and the possible implementation manners of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 An assembly view of the middle cover and the transmission mechanism provided in the embodiment of the application.

[0025] Figure 2 An exploded view of the middle cover and the driving disc provided in the embodiment of the application.

[0026] Figure 3 A structural schematic view of one implementation manner of the transmission mechanism provided in the embodiment of the application.

[0027] Figure 4 A structural schematic view of the handle provided in the embodiment of the application.

[0028] Figure 5 A structural schematic view of the driving disc provided in the embodiment of the application.

[0029] Figure 6 A structural schematic view of the connecting rod provided in the embodiment of the application.

[0030] Figure 7 A structural schematic view of the transmission mechanism in a first state provided in the embodiment of the application.

[0031] Figure 8 A structural schematic view of the transmission mechanism in a second state provided in the embodiment of the application.

[0032] Figure 9 A structural schematic view of the transmission mechanism in a third state provided in the embodiment of the application.

[0033] Figure 10 A structural schematic view of the transmission mechanism in a fourth state provided in the embodiment of the application.

[0034] Figure 11 A structural schematic view of another implementation manner of the transmission mechanism provided in the embodiment of the application.

[0035] Figure 12 The first setting form of the limiting shaft provided for the embodiment of the application.

[0036] Figure 13 The second setting form of the limiting shaft provided for the embodiment of the application.

[0037] Figure 14 The third setting form of the limiting shaft provided for the embodiment of the application.

[0038] Explanation of reference signs:

[0039] 100, handle; 110, push block; 111, mounting groove; 112, limiting hole;

[0040] 200, driving disc; 210, driving shaft; 220, mounting shaft;

[0041] 300, connecting rod; 310, first end; 311, first mounting hole; 320, second end; 321, second mounting hole;

[0042] 400, limiting shaft; 410, third end; 420, fourth end; 430, fifth end; 431, first limiting block; 440, sixth end; 441, shaft pin; 450, seventh end; 451, second limiting block; 460, eighth end; 461, circlip;

[0043] 500, middle cover; 510, mounting table; 511, third mounting hole. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme of the embodiments of the application will be described clearly and completely below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, not all embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0045] 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 belongs; the terminology used in the specification herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0046] The terms "comprise" and "have" and any variations thereof used in the specification and claims of the application and the drawings explanation are intended to cover, without excluding other content. The word "one" or "a" does not exclude the presence of more than one.

[0047] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] 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 represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0049] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] 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.

[0051] In the description of this application, it should be noted that, unless otherwise expressly 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. A physical connection can be a fixed connection, such as a connection secured by fasteners, such as a connection secured by screws, bolts, or other fasteners; 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 according to the specific circumstances.

[0052] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0053] Figure 1 This is an assembly drawing of the middle cover and transmission mechanism provided in an embodiment of this application. Figure 2 An exploded view of the middle cover and drive disk provided in an embodiment of this application. Figure 1 as well as Figure 2 As shown, this application provides a reclosing circuit breaker, which includes a middle cover 500 and a transmission mechanism. The middle cover 500 has an installation space inside, and the transmission mechanism is located within the installation space.

[0054] The reclosing circuit breaker includes a base, a middle cover 500, and a front cover. The coils, sensors, and tripping mechanisms of the reclosing circuit breaker are all housed within the base. The middle cover 500 covers the base and has an internal installation space. The transmission mechanism of the reclosing circuit breaker is located within this installation space. The transmission mechanism includes a handle 100, a drive disc 200, and a connecting rod 300. Part of the handle 100 extends through the middle cover 500 into the base and connects to the tripping mechanism within the base. The other part of the handle 100 is located within the middle cover 500 and connects to the drive disc 200 via the connecting rod 300. The front cover covers the middle cover 500 and protects the transmission mechanism within the installation space.

[0055] Please continue to refer to Figure 1 as well as Figure 2 As shown, a mounting platform 510 is provided in the mounting space inside the middle cover 500. The mounting platform 510 has a third mounting hole 511, and the drive disc 200 of the transmission mechanism has a mounting shaft 220. The mounting shaft 220 is located in the third mounting hole 511, and the mounting shaft 220 is rotatably connected to the mounting platform 510.

[0056] Mounting platform 510 can be a raised structure inside the middle cover 500. Since the portion of the handle 100 located within the mounting space has a push block 110, and the push block 110 needs to be connected to the drive disc 200 via a connecting rod 300, but the drive disc 200 is typically thin, a height difference often occurs between the drive disc 200 and the push block 110 after it is installed inside the middle cover 500. By setting up mounting platform 510 within the mounting space, the mounting position of the drive disc 200 can be raised, thereby eliminating the height difference between the drive disc 200 and the push block 110, making the connection between the drive disc 200 and the handle 100 more convenient.

[0057] The third mounting hole 511 can be a hole structure provided on the mounting platform 510. After the middle cover 500 is placed on the base, the third mounting hole 511 can connect the internal space of the base with the mounting space inside the middle cover 500. The mounting shaft 220 can be a rotating shaft structure located at the center point of the surface of the drive disk 200. When the drive disk 200 is mounted on the mounting platform 510, the mounting shaft 220 can be inserted into the third mounting hole 511. In this way, the mounting platform 510 can limit the drive disk 200, reducing the possibility of displacement of the drive disk 200 within the middle cover 500.

[0058] The length of the mounting shaft 220 can be greater than the length of the channel in the third mounting hole 511. When the drive disk 200 is mounted on the mounting platform 510, the end of the mounting shaft 220 away from the drive disk 200 can extend into the base. The end of the mounting shaft 220 away from the drive disk 200 can also be provided with a threaded hole. After the end of the mounting shaft 220 away from the drive disk 200 extends into the base, a bolt is fixed to the mounting shaft 220 through the threaded hole. The head size of the bolt can be larger than the diameter of the mounting shaft 220, so that the bolt head and the side of the middle cover 500 facing the base can form a limiting position, thereby limiting the drive disk 200 in the opening direction of the third mounting hole 511. This reduces the probability of the drive disk 200 falling off the mounting platform 510. Furthermore, since the length of the mounting shaft 220 can be greater than the length of the third mounting hole 511 channel, when the bolt is installed in the threaded hole at the end of the mounting shaft 220 away from the drive disk 200, the drive disk 200 will not be fixed to the middle cover 500, thus not affecting the rotation of the drive disk 200.

[0059] The transmission mechanism mentioned in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Figure 3 This is a structural schematic diagram of one implementation of the transmission mechanism provided in the embodiments of this application. Figure 4 This is a schematic diagram of the handle provided in an embodiment of this application. Figure 3 as well as Figure 4 As shown, the transmission mechanism mentioned in this application includes a handle 100, a drive disc 200, a connecting rod 300, and a limiting shaft 400. The handle 100 is provided with a push block 110, which is provided with a mounting groove 111 and a limiting hole 112, and the limiting hole 112 communicates with the mounting groove 111.

[0060] The push block 110 can be fixedly connected to the handle 100. Moving the handle 100 will cause the push block 110 to swing. The mounting groove 111 can be a through groove structure provided on the push block 110. When the mounting groove 111 is provided on the push block 110, the handle 100 can be divided into two identical parts by the mounting groove 111. The limiting hole 112 can be a through hole structure provided on the push block 110. The axial direction of the limiting hole 112 can be perpendicular to the opening direction of the mounting groove 111. When the limiting hole 112 is provided on the push block 110, the limiting hole 112 can simultaneously penetrate both the first and second parts and communicate with the mounting groove 111.

[0061] Figure 5 This is a schematic diagram of the drive disk provided in an embodiment of this application. Figure 2 , Figure 3 as well as Figure 5 As shown, the drive disk 200 is located on one side of the handle 100, and the surface of the drive disk 200 is provided with a drive shaft 210.

[0062] The drive disk 200 may include an upper surface and a lower surface, with the upper surface and lower surface of the drive disk 200 positioned opposite each other. The mounting shaft 220 of the drive disk 200 may be disposed on the lower surface, and the drive shaft 210 of the drive disk 200 may be disposed on the upper surface. The drive shaft 210 may be a cylindrical protrusion structure disposed on the upper surface.

[0063] Figure 6 This is a schematic diagram of the connecting rod provided in an embodiment of this application. Figure 3 , Figure 4 as well as Figure 6 As shown, the connecting rod 300 includes a first end 310 and a second end 320 positioned opposite each other. The first end 310 has a first mounting hole 311 through which the drive shaft 210 passes. The second end 320 has a second mounting hole 321 located within the mounting groove 111. The second mounting hole 321 is positioned opposite to the limiting hole 112. The limiting shaft 400 passes through the limiting hole 112 and the second mounting hole 321 to limit the second end 320.

[0064] The drive disc 200 is located on one side of the handle 100. When the drive disc 200 needs to be linked with the handle 100, it needs to be connected through the connecting rod 300. The connecting rod 300 can be a long strip plate structure. When the connecting rod 300 is installed in the transmission mechanism, the first end 310 is close to the drive disc 200, and the second end 320 is close to the push block 110.

[0065] The first mounting hole 311 can be a through hole structure provided on the first end 310. When the connecting rod 300 is connected to the drive disk 200, the drive shaft 210 on the drive disk 200 passes through the first mounting hole 311 and contacts the hole wall of the first mounting hole 311.

[0066] The end of the drive shaft 210 away from the drive disk 200 may be provided with a threaded hole. A screw may be installed in the threaded hole on the drive shaft 210. The diameter of the screw head may be larger than the diameter of the drive shaft 210. In this way, the screw can be used to limit the first end 310, reducing the possibility of the first end 310 falling off the drive shaft 210.

[0067] Alternatively, a fourth mounting hole may be provided at the end of the drive shaft 210 away from the drive disk 200. A rivet may be riveted to the fourth mounting hole, and the rivet head may limit the first end 310, reducing the possibility of the first end 310 falling off the drive shaft 210.

[0068] The second mounting hole 321 can be a through hole structure provided on the second end 320. When the connecting rod 300 is connected to the push block 110, the second end 320 can be located in the mounting groove 111. For example, when the connecting rod 300 is connected to the push block 110, the second end 320 is located between the first block and the second block.

[0069] like Figure 3 as well as Figure 4 As shown, the limiting shaft 400 passes through the limiting hole 112 and the second mounting hole 321, and the limiting shaft 400 can limit the second end 320.

[0070] The limiting shaft 400 can be a columnar structure. When the second end 320 is located in the mounting groove 111, the second mounting hole 321 can be aligned with the limiting hole 112 on the push block 110. At this time, after the limiting shaft 400 is inserted into the limiting hole 112 and the second mounting hole 321, the second end 320 can be limited, reducing the probability of the second end 320 separating from the push block 110. This can also improve the reliability of the transmission mechanism.

[0071] Figure 7 This is a schematic diagram of the transmission mechanism provided in the embodiment of this application in the first state. Figure 8 This is a schematic diagram of the transmission mechanism provided in the embodiment of this application in the second state. Figure 9 This is a schematic diagram of the transmission mechanism provided in the embodiment of this application in the third state. Figure 10 This is a schematic diagram of the transmission mechanism provided in the embodiments of this application in its fourth state. Figure 3 as well as Figure 7 to Figure 10 As shown, the operating principle of the transmission mechanism is as follows: when the drive disc 200 rotates, the drive shaft 210 can drive the connecting rod 300 to move, and when the connecting rod 300 moves, it can drive the push block 110 to swing between the first position and the second position. Among them, the second position is closer to the drive disc 200 than the first position.

[0072] For example, the first position can be the position of the push block 110 when the reclosing circuit breaker is in the closed state, and the second position can be the position of the push block 110 when the reclosing circuit breaker is in the open state.

[0073] Figure 7 The state of the transmission mechanism shown can be the initial state of the transmission mechanism, at which time the reclosing circuit breaker can be in the closed state. When the drive disc 200 rotates counterclockwise, the drive shaft 210 can drive the first end 310 to move away from the handle 100. At this time, the second end 320 can drive the push block 110, causing the push block 110 to swing from the first position to the second position.

[0074] Figure 8 The state of the transmission mechanism shown can be an intermediate state during the process of switching the reclosing circuit breaker from the closed state to the open state.

[0075] Figure 9 The state of the transmission mechanism shown can be the state of the transmission mechanism when the reclosing circuit breaker is in the open position. At this time, the drive disc 200 can no longer drive the first end 310 to move away from the handle 100, and the push block 110 is in the second position.

[0076] The above process describes the operating principle of the transmission mechanism during the transition of a reclosing circuit breaker from the closed to the open state. The following is a detailed description of the operating principle of the transmission mechanism during the transition of a reclosing circuit breaker from the open to the closed state.

[0077] Figure 9 The state of the transmission mechanism shown can be the initial state of the transmission mechanism, at which time the reclosing circuit breaker can be in the open state. When the drive disc 200 continues to rotate counterclockwise, the drive shaft 210 can drive the first end 310 to move towards the handle 100. At this time, the second end 320 can drive the push block 110, so that the push block 110 moves from the second position towards the first position.

[0078] Figure 10 The state of the transmission mechanism shown can be the intermediate state during the process of switching the reclosing circuit breaker from the open state to the closed state.

[0079] Figure 7 The state of the transmission mechanism shown can be the state of the transmission mechanism when the reclosing circuit breaker is closed. At this time, the drive disc 200 can no longer drive the first end 310 to move towards the handle 100, and the push block 110 is in the first position.

[0080] As can be seen from the above description, whether the reclosing circuit breaker is switching from the closed state to the open state or from the open state to the closed state, the drive disk 200 always rotates in one direction. Therefore, the drive shaft 210 and the mounting shaft 220 need to be located on two opposite surfaces of the drive disk 200 to avoid interference of the mounting shaft 220 with the movement of the connecting rod 300.

[0081] In summary, the transmission mechanism mentioned in this application, utilizing the handle 100, drive disc 200, and connecting rod 300, enables the opening and closing of the reclosing circuit breaker by driving the drive disc 200. A drive shaft 210 is provided on the drive disc 200, and a first mounting hole 311 is provided on the first end 310 of the connecting rod 300. When the connecting rod 300 is connected to the drive disc 200, the drive shaft 210 passes through the first mounting hole 311. A mounting groove 111 and a limiting hole 112 are provided on the push block 110. When the connecting rod 300 is connected to the handle 100, the second end 320 is inserted into the mounting groove 111, aligning the second mounting hole 321 with the limiting hole 112. Then, the limiting shaft 400 is inserted into the second mounting hole 321 and the limiting hole 112. This connection method of the handle 100, drive disc 200, and connecting rod 300 is relatively simple and can reduce the time cost required for installation of the transmission mechanism. Furthermore, this connection method eliminates the need for numerous bolts during connection, thereby reducing the production cost of the transmission mechanism and its subsequent maintenance costs.

[0082] In some possible embodiments, the drive disk 200 may have a fifth mounting hole, with the first mounting hole 311 positioned opposite to the fifth mounting hole. A rivet is riveted to the fifth mounting hole, the rivet shank passing through the first mounting hole 311 and rotatably connected to the first end 310. The rivet head can limit the first end 310, reducing the possibility of the first end 310 falling off the drive shaft 210. It should be noted that the distance between the rivet head and the surface of the drive disk 200 needs to be greater than the thickness of the first end 310. This way, when the drive disk 200 moves the first end 310, the restriction of the rivet on the first end 310 can be reduced, making the movement of the first end 310 smoother.

[0083] like Figure 3 As shown, the drive disk 200 is a gear, and the drive shaft 210 is disposed on the end face of the gear and on the edge of the end face. The rotation of the drive disk 200 can drive the first end 310 to move along the rotation trajectory of the drive disk 200.

[0084] The end faces of the gear can be two surfaces perpendicular to the gear axis. The drive shaft 210 and the mounting shaft 220 can be respectively disposed on two opposite end faces of the gear.

[0085] The drive shaft 210 can be disposed on the edge of the end face; for example, the drive shaft 210 can be disposed on the end face near the gear teeth. When the gear rotates, the drive shaft 210 can move along the rotation trajectory of the gear of the drive disk 200. In this way, the drive shaft 210 can drive the first end 310 to move along the rotation trajectory of the drive disk 200.

[0086] In summary, gears have advantages such as simple setup and compact structure. When the drive disc 200 is a gear, it not only reduces the installation difficulty of the transmission mechanism but also enables the drive disc 200 to achieve efficient power transmission within a limited space, thus improving the reliability of the transmission mechanism. When the drive shaft 210 is located at the edge of the end face, the drive shaft 210 can drive the first end 310 to move along the rotation trajectory of the drive disc 200. In this way, the connecting rod 300 can drive the second end 320 to move closer to the drive disc 200, thereby enabling the connecting rod 300 to drive the push block 110 to move from the first position to the second position.

[0087] There are several ways to set up a transmission mechanism. The following examples illustrate two such methods with reference to the attached diagram.

[0088] Figure 11 A schematic diagram of another implementation of the transmission mechanism provided in this application embodiment. The first configuration method is as follows: Figure 11 As shown, the drive disc 200 is perpendicular to the axis of the limiting shaft 400. The first end 310 and the second end 320 of the connecting rod 300 are parallel to each other and also parallel to the drive disc 200. The second end 320 can rotate within the mounting groove 111.

[0089] The connecting rod 300 can be in the shape of a long strip plate, and the first end 310 and the second end 320 can be on the same plane. In this way, when the first end 310 and the second end 320 are both parallel to the end face of the drive disk 200, the connecting rod 300 is parallel to the end face of the drive disk 200.

[0090] The end face of the drive disc 200 is perpendicular to the axial direction of the limit shaft 400. Since the connecting rod 300 is parallel to the end face of the drive disc 200, the connecting rod 300 is also perpendicular to the axial direction of the limit shaft 400.

[0091] In this way, when the connecting rod 300 drives the push block 110 to move from the first position to the second position, the mounting groove 111 can make way for the connecting rod 300, reducing the probability of interference between the push block 110 and the connecting rod 300.

[0092] When the first configuration is selected, the structure of the connecting rod 300 is simpler and easier to manufacture. Furthermore, the connecting rod 300 is parallel to the opening direction of the mounting groove 111, which reduces the probability of interference between the push block 110 and the connecting rod 300, thus improving the reliability of the transmission mechanism.

[0093] The second setting method is as follows: Figure 1 as well as Figure 3 As shown, the drive disk 200 is parallel to the axis of the limiting shaft 400. The second end 320 is perpendicular to the first end 310, and the first end 310 is parallel to the drive disk 200. The second end 320 can rotate and swing within the mounting groove 111.

[0094] When the reclosing circuit breaker is in the closed or open state, the first end 310 is parallel to the drive panel 200. When the reclosing circuit breaker switches from the closed state to the open state, the first end 310 can not only rotate along the drive shaft 210, but also swing along the axial direction of the drive shaft 210. Alternatively, when the reclosing circuit breaker switches from the open state to the closed state, the first end 310 can not only rotate along the drive shaft 210, but also swing along the axial direction of the drive shaft 210.

[0095] Transmission mechanism in Figure 3 In the state shown, the drive disc 200 can be positioned above the push block 110. The connecting rod 300 can be an "L"-shaped structure, with the first end 310 and the second end 320 on different planes. When the connecting rod 300 is connected to the handle 100, the second end 320 extends from above the push block 110 into the mounting groove 111. At this time, when the push block 110 moves, the "L"-shaped connecting rod 300 can make way for the push block 110, reducing the probability of interference between the push block 110 and the connecting rod 300.

[0096] The end face of the drive disk 200 is parallel to the axis of the limit shaft 400, and the second end 320 is perpendicular to the first end 310. When the drive disk 200 rotates and drives the first end 310 to move along the rotation trajectory of the drive disk 200, the second end 320 will swing in the mounting groove 111. This can reduce the probability of jamming between the structural components in the transmission mechanism when the second end 320 drives the push block 110 to move.

[0097] When the second setting method is selected, since the drive disk 200 is set parallel to the axis of the limiting shaft 400, the drive disk 200 can be parallel to the inner bottom surface of the middle cover 500. In this way, when the drive disk 200 is installed inside the middle cover 500, the contact area with the middle cover 500 is larger, and the installation is more stable.

[0098] When the transmission mechanism is configured in the second way, there is a gap between the groove wall of the mounting groove 111 and the second end 320, and there is a gap between the hole wall of the second mounting hole 321 and the side wall of the limiting shaft 400.

[0099] The side wall of the second end 320 does not contact the groove wall of the mounting groove 111, and the diameter of the second mounting hole 321 is larger than the diameter of the limiting shaft 400.

[0100] With the above configuration, when there is a gap between the wall of the mounting groove 111 and the second end 320, the second end 320 can swing within the mounting groove 111. This reduces the probability of the second end 320 being unable to swing within the mounting groove 111 due to a lack of gap between the wall of the mounting groove 111 and the second end 320, thus preventing the internal components of the transmission mechanism from jamming. Since the limiting shaft 400 passes through the second mounting hole 321, the second end 320 can only swing when there is a gap between the wall of the second mounting hole 321 and the side wall of the limiting shaft 400. This reduces the probability of the second end 320 being unable to swing due to a lack of gap between the wall of the second mounting hole 321 and the side wall of the limiting shaft 400.

[0101] Alternatively, when the transmission mechanism adopts the second setting method, there is a gap between the groove wall of the mounting groove 111 and the second end 320, the limiting shaft 400 can be tightly fitted with the second end 320, and there can be a gap between the hole wall of the limiting hole 112 and the side wall of the limiting shaft 400.

[0102] When the second end 320 drives the push block 110 to swing, the limiting shaft 400 can swing within the limiting hole 112 under the drive of the second end 320.

[0103] There are several ways to set the limit axis 400. The following describes three of these settings in detail with reference to the attached diagram.

[0104] Figure 12 This is a first configuration of the limiting shaft provided in an embodiment of this application. The first configuration is as follows: Figure 3 , Figure 4 as well as Figure 12 As shown, the limiting shaft 400 includes a third end 410 and a fourth end 420 that are positioned opposite each other. After the third end 410 or the fourth end 420 passes through the limiting hole 112 and the second mounting hole 321, both the third end 410 and the fourth end 420 are riveted to the push block 110.

[0105] The limiting shaft 400 can be cylindrical. The third end 410 and the fourth end 420 are the two ends of the cylindrical limiting shaft 400. After the second end 320 of the connecting rod 300 is located in the mounting groove 111, the limiting shaft 400 is inserted into the limiting hole 112 and the second mounting hole 321. Then, the third end 410 is riveted to the first piece of the push block 110, and the fourth end 420 is riveted to the second piece of the push block 110, thus completing the installation of the limiting shaft 400.

[0106] When the third end 410 and the fourth end 420 of the limiting shaft 400 are both riveted to the push block 110, the limiting shaft 400 and the push block 110 are fixedly connected. At this time, the only way to solve the problem of the second end 320 swinging in the mounting groove 111 is to make the groove wall of the mounting groove 111 and the second end 320 have a gap, and to make the hole wall of the second mounting hole 321 and the side wall of the limiting shaft 400 have a gap.

[0107] When the first setting is selected, the structure of the limit shaft 400 is relatively simple and easier to manufacture. The riveting method can make the installation of the limit shaft 400 more secure, which can improve the reliability of the transmission mechanism.

[0108] Figure 13 This is a second configuration of the limiting shaft provided in the embodiments of this application. The second configuration is as follows: Figure 3 , Figure 4 as well as Figure 13 As shown, the limiting shaft 400 includes a fifth end 430 and a sixth end 440 that are positioned opposite each other. The fifth end 430 is provided with a first limiting block 431, and the sixth end 440 is provided with a through hole in which a pin 441 is inserted. After the sixth end 440 passes through the limiting hole 112 and the second mounting hole 321, the first limiting block 431 abuts against the first side wall of the push block 110, and at the same time, the pin 441 abuts against the second side wall of the push block 110. The first side wall and the second side wall are positioned opposite each other.

[0109] The limiting shaft 400 can be cylindrical. The fifth end 430 and the sixth end 440 are the two ends of the cylindrical limiting shaft 400. The first limiting block 431 can be a protrusion structure provided at the fifth end 430, and the cross-sectional area of ​​the first limiting block 431 along the axis of the limiting shaft 400 can be larger than the opening area of ​​the limiting hole 112. The through hole can be provided along a direction perpendicular to the axis of the limiting shaft 400.

[0110] After the second end 320 of the connecting rod 300 is located in the mounting groove 111, the sixth end 440 first passes through the limiting hole 112 and the second mounting hole 321 until the first limiting block 431 abuts against the side wall of the push block 110. Then, the shaft pin 441 is inserted into the through hole, at which point the shaft pin 441 also abuts against the side wall of the push block 110. At this point, the limiting shaft 400 is installed.

[0111] When the second configuration is selected, the disassembly and installation of the limit shaft 400 are more flexible. When the connecting rod 300 or the handle 100 needs maintenance, the limit shaft 400 can be removed from the push block 110 by pulling out the shaft pin 441, which can save on the later maintenance costs of the transmission mechanism.

[0112] Figure 14 This is a third configuration of the limiting shaft provided in the embodiments of this application. The third configuration is as follows: Figure 3 , Figure 4 as well as Figure 14 As shown, the limiting shaft 400 includes a seventh end 450 and an eighth end 460 positioned opposite each other. The seventh end 450 is provided with a second limiting block 451, and the side wall of the eighth end 460 is provided with a limiting groove, in which a retaining spring 461 is engaged. After the eighth end 460 passes through the limiting hole 112 and the second mounting hole 321, the second limiting block 451 abuts against the first side wall of the push block 110, and at the same time, the retaining spring 461 abuts against the second side wall of the push block 110, with the first and second side walls positioned opposite each other.

[0113] The limiting shaft 400 can be cylindrical. The seventh end 450 and the eighth end 460 are the two ends of the cylindrical limiting shaft 400. The second limiting block 451 can be a protrusion structure provided on the seventh end 450, and the cross-sectional area of ​​the second limiting block 451 in the axial direction of the limiting shaft 400 can be larger than the opening area of ​​the limiting hole 112. The limiting groove can be formed on the side wall of the eighth end 460. The retaining ring 461 can be a plate-like structure with an opening.

[0114] When the second end 320 of the connecting rod 300 is located in the mounting groove 111, the eighth end 460 first passes through the limiting hole 112 and the second mounting hole 321 until the second limiting block 451 abuts against the side wall of the push block 110. At this time, the retaining spring 461 is engaged in the limiting groove, and the side wall of the retaining spring 461 also abuts against the side wall of the push block 110. At this point, the limiting shaft 400 is installed.

[0115] When the third configuration is selected, the disassembly and installation of the limit shaft 400 are more flexible. When the connecting rod 300 or the handle 100 needs maintenance, the limit shaft 400 can be removed from the push block 110 by removing the snap ring 461 from the limit groove, which can save on the later maintenance costs of the transmission mechanism.

Claims

1. A transmission mechanism, characterized in that, include: The handle is provided with a push block, the push block is provided with a mounting groove and a limiting hole, and the limiting hole communicates with the mounting groove; A connecting rod includes a first end and a second end that are positioned opposite each other. The first end is provided with a first mounting hole, and the second end is provided with a second mounting hole. The second end is located in the mounting groove, and the second mounting hole is positioned opposite to the limiting hole. A drive disc is located on one side of the handle, and a drive shaft is provided on the surface of the drive disc; the drive shaft passes through the first mounting hole and is rotatably connected to the connecting rod. A limiting shaft passes through the limiting hole and the second mounting hole to limit the second end; When the drive disk rotates, the drive shaft can drive the connecting rod to move. When the connecting rod moves, it can drive the push block to swing between a first position and a second position. The second position is closer to the drive disk than the first position.

2. The transmission mechanism according to claim 1, characterized in that, The drive disk is a gear, and the drive shaft is disposed on the end face of the gear, and the drive shaft is disposed on the edge of the end face; The rotation of the drive disk can cause the first end to move along the rotation trajectory of the drive disk.

3. The transmission mechanism according to claim 1, characterized in that, The drive disk is perpendicular to the axis of the limiting shaft; The first end and the second end are parallel, and both are parallel to the drive disk; The second end is capable of rotating within the mounting slot.

4. The transmission mechanism according to claim 1, characterized in that, The drive disk is parallel to the axial direction of the limiting shaft; The second end is perpendicular to the first end, and the first end is parallel to the drive disk; The second end is capable of rotating and oscillating within the mounting slot.

5. The transmission mechanism according to claim 4, characterized in that, There is a gap between the wall of the mounting groove and the second end, and there is a gap between the wall of the second mounting hole and the side wall of the limiting shaft.

6. The transmission mechanism according to any one of claims 1-5, characterized in that, The limiting shaft includes a third end and a fourth end that are positioned opposite each other; After the third end or the fourth end passes through the limiting hole and the second mounting hole, both the third end and the fourth end are riveted to the push block.

7. The transmission mechanism according to any one of claims 1-5, characterized in that, The limiting shaft includes a fifth end and a sixth end that are positioned opposite each other; The fifth end is provided with a first limiting block, and the sixth end is provided with a through hole, into which a shaft pin is inserted; After the sixth end passes through the limiting hole and the second mounting hole, the first limiting block abuts against the first side wall of the push block, and the shaft pin abuts against the second side wall of the push block. The positions of the first side wall and the second side wall are opposite.

8. The transmission mechanism according to any one of claims 1-5, characterized in that, The limiting shaft includes a seventh end and an eighth end that are positioned opposite each other; The seventh end is provided with a second limiting block, and the side wall of the eighth end is provided with a limiting groove, in which a retaining spring is engaged. After the eighth end passes through the limiting hole and the second mounting hole, the second limiting block abuts against the first side wall of the push block, and the snap ring abuts against the second side wall of the push block. The first side wall and the second side wall are positioned opposite each other.

9. A reclosing circuit breaker, characterized in that, Includes a middle cover and a transmission mechanism as described in any one of claims 1 to 8; The inner cover has an installation space, and the transmission mechanism is located within the installation space.

10. The reclosing circuit breaker according to claim 9, characterized in that, The installation space is provided with an installation platform, the installation platform is provided with a third installation hole, and the drive disc of the transmission mechanism is provided with an installation shaft; The mounting shaft is located within the third mounting hole, and the mounting shaft is rotatably connected to the mounting platform.

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