Operating mechanism and isolating switch

Abstract

The utility model relates to an operating mechanism and an isolating switch, the operating mechanism comprises a shell, an operating handle, a connecting rod transmission assembly and a release, the connecting rod transmission assembly comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod and a lock catch, and the lock catch is connected with the shell; when the connecting rod transmission assembly is in a closed state, the lock catch is buckled with the third connecting rod, the first elastic piece provides an acting force for anticlockwise rotation for the first connecting rod, and the second elastic piece provides an acting force for clockwise rotation for the fifth connecting rod; the release can receive an external signal and drive the lock catch according to the external signal, so that the connecting rod transmission assembly is switched from a closing state or a re-tripping opening state to a tripping state. Compared with the prior art, the disconnecting switch operating mechanism is simple in structure, the height and the size of the operating mechanism are reduced, remote automatic tripping is realized by the tripper and the lock catch, and the safety of the disconnecting switch is improved.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to an operating mechanism and a disconnecting switch. Background Technology

[0002] With rapid economic development, people's living standards have significantly improved, and they have gained a more comprehensive understanding of electrical safety. To increase electrical safety, disconnect switches are usually installed in circuits so that electrical equipment can be disconnected from live parts and maintain an effective isolation distance during maintenance.

[0003] For low-voltage disconnect switches, most products on the market use a manual operating mechanism to close and open the switch body.

[0004] With the improvement of product performance indicators, taking DC operating environment as an example, the rated operating voltage has been increased to DC1500V. The insulation and safety requirements of the product are getting higher and higher to prevent the risk of electric shock to operators during on-site operation. According to the improvement of intelligent needs, customers have the need for remote operation of the main body to open and close the circuit breaker.

[0005] Furthermore, existing disconnect switches have complex structures and multi-layer switching devices that occupy a large space, making it necessary to develop a compact and small-sized operating mechanism. Utility Model Content

[0006] The purpose of this utility model is to overcome the defects of the prior art by providing an operating mechanism and disconnecting switch that can be remotely operated and has a compact structure.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] An operating mechanism, comprising:

[0009] A housing and an operating handle, wherein the operating handle is disposed on the housing;

[0010] A linkage transmission assembly includes a first link, a second link, a third link, a fourth link, a fifth link, and a latch, the latch being connected to the housing; the first link is rotatably connected to the housing and the second link, the third link is rotatably connected to the second link and the fourth link, the fifth link is rotatably connected to the fourth link and the housing, the fifth link is connected to the moving contact transmission shaft of the switch, the first link is drively connected to the operating handle, and the rotation axis of the fifth link coincides with the central axis of the housing and the moving contact transmission shaft;

[0011] A first elastic element is provided between the first connecting rod and the housing, and a second elastic element is provided between the fifth connecting rod and the housing. A limiting block is provided on the housing. When the second elastic element is in its natural state, the fifth connecting rod abuts against the limiting block.

[0012] When the linkage transmission assembly is in the closed state, the latch is engaged with the third link, the first elastic element provides a force for the first link to rotate counterclockwise, and the second elastic element provides a force for the fifth link to rotate clockwise; when the linkage transmission assembly is in the re-clamping / opening state, the latch is engaged with the third link, the first elastic element provides a force for the first link to rotate clockwise, and the second elastic element is in its natural state; when the linkage transmission assembly is in the disengaged state, the latch is disengaged from the third link, the first elastic element is in its natural state, and the second elastic element is in its natural state.

[0013] The trip unit is capable of receiving external signals and driving the latch according to the external signals, so that the linkage transmission assembly switches from the closed state or the re-clamping open state to the tripped state.

[0014] In one embodiment, a handle centering assembly is also included, the handle centering assembly including a first drive shaft connected to the operating handle and a second drive shaft connected to the first linkage.

[0015] In one embodiment, the housing includes a bottom shell, a middle shell, and a top shell that are stacked sequentially. The first connecting rod is rotatably connected to the bottom shell, the handle central assembly is connected to the middle shell, the operating handle is connected to the top shell, the first drive shaft passes through the top shell and is connected to the operating handle, and the second drive shaft passes through the middle shell and is connected to the first connecting rod.

[0016] In one embodiment, the handle center unit adopts a linkage drive structure or a gear drive structure, and provides the operating handle with a rotation angle of not less than 90°.

[0017] In one embodiment, the handle center assembly includes a first handle drive rod, a second handle drive rod, and a third handle drive rod. The first handle drive rod is connected to the first drive shaft, the second handle drive rod is rotatably connected to both the first and third handle drive rods, and the third handle drive rod is connected to the second drive shaft.

[0018] In one embodiment, the housing is provided with a first sliding groove, the shape of which is adapted to the movement path at the connection between the first connecting rod and the second connecting rod, and a first slider is provided at the connection between the first connecting rod and the second connecting rod, the first slider slidingly engaging with the first sliding groove.

[0019] In one embodiment, the housing is provided with a second sliding groove, the first sliding groove and the second sliding groove are interconnected, the shape of the second sliding groove is adapted to the movement path at the connection between the second connecting rod and the third connecting rod, and a second slider is provided at the connection between the second connecting rod and the third connecting rod, the second slider slidingly engaging with the second sliding groove.

[0020] In one embodiment, the latch is rotatably connected to the housing, and a third elastic element is provided between the latch and the housing. When the third elastic element is in its natural state, the latch can be engaged with the third connecting rod.

[0021] In one embodiment, the trip unit is provided with a retractable push rod, which is driven to extend and retract according to an external signal. When the push rod is extended, it abuts against the latch, providing the latch with a force for counterclockwise rotation.

[0022] A disconnecting switch includes a switching device and an operating mechanism, wherein the fifth link of the operating mechanism is connected to the moving contact drive shaft of the switching device.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The aforementioned operating mechanism features a linkage transmission assembly on its housing, connecting the operating handle and the moving contact drive shaft. This allows rotation of the operating handle to be transmitted to the moving contact drive shaft via the linkage transmission assembly, thereby controlling the opening and closing of the disconnector switch. When the latch is engaged with the third link, rotating the operating handle switches the linkage transmission assembly from a re-clamping open state to a closed state. When the latch is disengaged from the third link, rotating the operating handle only switches the linkage transmission assembly from a tripping state to a re-clamping open state. When the linkage transmission assembly is in the closed state, the latch can be driven by the trip unit to switch the linkage transmission assembly from the closed state to the tripping state, or the operating handle can be rotated to switch the linkage transmission assembly from the closed state to the re-clamping open state. Therefore, this operating mechanism incorporates a novel linkage transmission assembly, resulting in a simple structure, reduced height and volume, and remote automatic tripping of the trip unit and latch, which improves the safety of the disconnector switch.

[0025] 2. The above-mentioned operating mechanism realizes the re-clamping, closing, and tripping states through the linkage transmission assembly, ensuring the stability of the transmission. At the same time, a handle centering assembly is set up, retaining the characteristic that the center of the traditional operating handle coincides with the center of the moving contact transmission shaft, resulting in a compact structure and small space occupation.

[0026] 3. The housing includes a bottom shell, a middle shell, and a top shell. The linkage transmission assembly is located on the bottom shell, the handle center assembly is located on the middle shell, and the operating handle is located on the top shell. This achieves a layered arrangement of the transmission structure and provides better limit and positioning support for the linkage transmission assembly and the handle center assembly.

[0027] 4. The housing is provided with a first sliding groove and a second sliding groove that are interconnected. Therefore, the second end of the first connecting rod can move in the first sliding groove, and the second end of the second connecting rod can slide in the second sliding groove. These are used to limit the rotation angle of the first connecting rod and the movement path of the second connecting rod, respectively, to ensure that the connecting rod transmission assembly can accurately complete the switching between the closed state, the re-clamping state and the tripping state, thereby improving the transmission accuracy of the connecting rod transmission assembly.

[0028] 5. A third elastic element is provided between the latch and the housing. Therefore, the third elastic element can keep the latch in the position where it can be engaged with the third link. The latch can only be separated from the third link by driving the latch to rotate through the release device, or by moving the third link to separate the latch from the third link. This helps to ensure the reliability and controllability of the latch engagement with the third link. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the operating mechanism in this utility model.

[0030] Figure 2 This is an exploded view of the operating mechanism in this utility model.

[0031] Figure 3 This is a schematic diagram of the disconnecting switch in this utility model.

[0032] Figure 4 This is a schematic diagram of the linkage transmission assembly in this utility model.

[0033] Figure 5 This is a schematic diagram of the linkage transmission assembly in the disengaged state in this utility model.

[0034] Figure 6 This is a schematic diagram of the linkage transmission assembly in the re-clamping state of this utility model.

[0035] Figure 7 This is a schematic diagram of the linkage transmission assembly in the closed state in this utility model.

[0036] Figure 8 This is a schematic diagram of the centrally located handle component in this utility model.

[0037] Reference numerals: 100, operating mechanism; 10, housing; 11, bottom housing; 111, first slide groove; 112, second slide groove; 113, limiting block; 12, middle housing; 13, top housing; 14, connecting piece; 20, operating handle; 30, linkage transmission assembly; 31, first connecting rod; 32, second connecting rod; 33, third connecting rod; 34, fourth connecting rod; 35, fifth connecting rod; 36, latch; 37, first elastic element; 38, second elastic element; 39, third elastic element; 40, trip unit; 41, top rod; 50, handle center assembly; 51, first transmission shaft; 52, second transmission shaft; 53, first handle transmission rod; 54, second handle transmission rod; 55, third handle transmission rod; 60, switching device; 61, moving contact transmission shaft; 200, disconnecting switch. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0039] The operating mechanism 100 and the disconnecting switch 200 in some embodiments are described in detail below with reference to the accompanying drawings.

[0040] like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in one embodiment, an operating mechanism 100 is provided, including a housing 10, an operating handle 20, a linkage transmission assembly 30, and a trip unit 40;

[0041] The operating handle 20 is mounted on the housing 10. The linkage transmission assembly 30 includes a first link 31, a second link 32, a third link 33, a fourth link 34, a fifth link 35, and a latch 36, which is connected to the housing 10. The first link 31 is rotatably connected to the housing 10 and the second link 32, the third link 33 is rotatably connected to the second link 32 and the fourth link 34, the fifth link 35 is rotatably connected to the fourth link 34 and the housing 10, and the fifth link 35 is connected to the moving contact transmission shaft 61 of the switch. The first link 31 is connected to the operating handle 20, and the rotation axis of the fifth link 35 coincides with the central axis of the moving contact transmission shaft 61.

[0042] Furthermore, a first elastic element 37 is provided between the first link 31 and the housing 10, a second elastic element 38 is provided between the fifth link 35 and the housing 10, and a limiting block 113 is provided on the housing 10. When the second elastic element 38 is in its natural state, the fifth link 35 abuts against the limiting block 113.

[0043] At the same time, such as Figure 7 As shown, when the linkage drive assembly 30 is in the closed state, the latch 36 engages with the third link 33, the first elastic element 37 provides a counterclockwise rotational force to the first link 31, and the second elastic element 38 provides a clockwise rotational force to the fifth link 35; as Figure 6 As shown, when the linkage drive assembly 30 is in the re-clamping / opening state, the latch 36 is engaged with the third link 33, the first elastic element 37 provides a clockwise rotational force to the first link 31, and the second elastic element 38 is in its natural state; as Figure 5 As shown, when the linkage drive assembly 30 is in the disengaged state, the latch 36 is separated from the third link 33, the first elastic element 37 is in the natural state, and the second elastic element 38 is in the natural state.

[0044] Furthermore, the trip unit 40 can accept external signals and drive the latch 36 according to the external signals, so that the linkage transmission assembly 30 switches from the closed state or the re-clamping open state to the tripped state.

[0045] The aforementioned operating mechanism 100 has a linkage transmission assembly 30 on its housing 10, which connects the operating handle 20 and the moving contact transmission shaft 61. This allows rotation of the operating handle 20 to be transmitted to the moving contact transmission shaft 61 via the linkage transmission assembly 30, thereby controlling the opening and closing of the disconnector switch 200. When the latch 36 is engaged with the third link 33, rotating the operating handle 20 switches the linkage transmission assembly 30 from the engaged / disengaged state to the closed state. When the latch 36 is disengaged from the third link 33, rotating the operating handle 20 only disengages the linkage transmission assembly 30 from the disengaged state. When the linkage drive assembly 30 is in the closed state, it can be switched from the closed state to the tripped state by driving the latch 36 through the trip unit 40. Alternatively, the linkage drive assembly 30 can be switched from the closed state to the tripped state by rotating the operating handle 20. Therefore, the operating mechanism 100 is designed with a new type of linkage drive assembly 30, which has a simple structure, reduces the height and volume of the operating mechanism 100, and enables remote automatic tripping of the trip unit 40 and the latch 36, which is beneficial to improving the safety of the disconnect switch 200.

[0046] Specifically, in one embodiment, the first elastic element 37 and the second elastic element 38 can be torsion springs or springs. As long as the first connecting rod 31 and the fifth connecting rod 35 can rotate, the structure of the first elastic element 37 and the second elastic element 38 is not limited here. In this embodiment, torsion springs are preferred.

[0047] In this specific embodiment, the first end of the first connecting rod 31 is rotatably connected to the housing 10 about the first axis; the first end of the second connecting rod 32 is rotatably connected to the second end of the first connecting rod 31 about the second axis; the second end of the second connecting rod 32 is rotatably connected to the third connecting rod 33 about the third axis; one end of the fourth connecting rod 34 is rotatably connected to one end of the third connecting rod 33 about the fourth axis; the other end of the fourth connecting rod 34 is rotatably connected to one end of the fifth connecting rod 35 about the fifth axis; the other end of the fifth connecting rod 35 is rotatably connected to the housing 10 about the sixth axis; the first axis, the second axis, the third axis, the fourth axis, and the fifth axis are all parallel to the axis of the moving contact drive shaft 61, and the sixth axis coincides with the axis of the moving contact drive shaft 61.

[0048] Specifically, such as Figure 5 , Figure 6 and 8 As shown, in one embodiment, the third link 33 is a triangular equivalent link. The second end of the second link 32 is connected to one apex of the third link 33. The fourth link 34 and the latch 36 are located on both sides of the second link 32 and are connected to the other two apexes of the third link 33. Therefore, when the latch 36 is engaged with the third link 33, the third link 33 rotates around the apex of its connection with the latch 36. When the latch 36 is disengaged from the third link 33, the third link 33 rotates around the apex of its connection with the second link 32.

[0049] Specifically, such as Figure 2 and 8 As shown, in one embodiment, it also includes a handle centering assembly 50, which includes a first drive shaft 51 connected to the operating handle 20 and a second drive shaft 52 connected to the first connecting rod 31.

[0050] Furthermore, as shown in Figure 2, in one embodiment, the fifth link 35 is connected to the moving contact drive shaft 61, realizing the concentric installation of the on / off device 60, the link drive assembly 30 and the handle center assembly 50, which is beneficial to improving the transmission accuracy.

[0051] Furthermore, such as Figure 1 and 2 As shown, in one embodiment, the housing 10 includes a bottom shell 11, a middle shell 12 and a top shell 13 that are stacked in sequence. A first connecting rod 31 is rotatably connected to the bottom shell 11. A handle center assembly 50 is connected to the middle shell 12. An operating handle 20 is connected to the top shell 13. A first drive shaft 51 passes through the top shell 13 and is connected to the operating handle 20. A second drive shaft 52 passes through the middle shell 12 and is connected to the first connecting rod 31.

[0052] The housing 10 includes a bottom housing 11, a middle housing 12, and a top housing 13. The connecting rod transmission assembly 30 is disposed on the bottom housing 11, the handle center assembly 50 is disposed on the middle housing 12, and the operating handle 20 is disposed on the top housing 13. This achieves a layered arrangement of the transmission structure and provides better limiting and positioning support for the connecting rod transmission assembly 30 and the handle center assembly 50.

[0053] In this specific embodiment, a plurality of first support blocks are provided between the bottom shell 11 and the middle shell 12. One end of the first support block is connected to the bottom shell 11 and the other end is connected to the middle shell 12. A plurality of second support blocks are provided between the middle shell 12 and the top shell 13. One end of the second support block is connected to the middle shell 12 and the other end is connected to the top shell 13.

[0054] Furthermore, such as Figure 1 and 2 As shown, in one embodiment, the handle center unit adopts a linkage transmission structure or a gear transmission structure, and provides the operating handle 20 with a rotation angle of not less than 90°.

[0055] Furthermore, such as Figure 8 As shown, in one embodiment, the handle center assembly 50 includes a first handle transmission rod 53, a second handle transmission rod 54, and a third handle transmission rod 55. The first handle transmission rod 53 is connected to a first transmission shaft 51, the second handle transmission rod 54 is rotatably connected to the first handle transmission rod 53 and the third handle transmission rod 55 respectively, and the third handle transmission rod 55 is connected to a second transmission shaft 52.

[0056] The aforementioned operating mechanism 100 realizes the re-clamping, closing, and tripping states through the linkage transmission assembly 30, ensuring the stability of the transmission. At the same time, a handle center-mounted assembly 50 is also provided, retaining the characteristic that the center of the traditional operating handle 20 coincides with the center of the moving contact transmission shaft 61, resulting in a compact structure and small space occupation.

[0057] Specifically, such as Figure 5 , Figure 6 and 8 As shown, in one embodiment, the housing 10 is provided with a first sliding groove 111. The shape of the first sliding groove 111 is adapted to the movement path at the connection between the first connecting rod 31 and the second connecting rod 32. A first slider is provided at the connection between the first connecting rod 31 and the second connecting rod 32. The first slider slides in cooperation with the first sliding groove 111.

[0058] Furthermore, such as Figure 5 , Figure 6 and 8As shown, in one embodiment, the housing 10 is provided with a second slide groove 112, the first slide groove 111 and the second slide groove 112 are interconnected, the shape of the second slide groove 112 is adapted to the movement path at the connection between the second link 32 and the third link 33, and a second slider is provided at the connection between the second link 32 and the third link 33, the second slider is slidably engaged with the second slide groove 112.

[0059] The first slide groove 111 is an arc-shaped slide groove with the first end of the first connecting rod 31 as the center and the length of the first connecting rod 31 as the radius. The second slide groove 112 is an arc-shaped slide groove with the apex of the connection between the third connecting rod and the latch as the center and the distance between the apex of the connection between the third connecting rod and the second connecting rod and the apex of the connection between the third connecting rod and the latch as the radius.

[0060] In this specific embodiment, such as Figure 7 As shown, when the linkage drive assembly 30 is in the closed state, the second end of the first link 31 is located at the leftmost end of the first slide groove 111, and the second end of the second link 32 is located at the leftmost end of the second slide groove 112. The included angle between the first link 31 and the second link 32 is greater than 180°. Figure 6 As shown, when the linkage drive assembly 30 is in the re-clamping state, the second end of the first link 31 is located at the rightmost end of the first slide groove 111, and the second end of the second link 32 is located at the rightmost end of the second slide groove 112. The included angle between the first link 31 and the second link 32 is greater than 90° and less than 180°. Figure 5 As shown, when the linkage drive assembly 30 is in the disengaged state, the second end of the first link 31 is located in the middle of the first slide groove 111, and the second end of the second link 32 is located at the leftmost end of the second slide groove 112.

[0061] The housing 10 is provided with a first sliding groove 111 and a second sliding groove 112 that are interconnected. Therefore, the second end of the first connecting rod 31 can move in the first sliding groove 111, and the second end of the second connecting rod 32 can slide in the second sliding groove 112. These are used to limit the rotation angle of the first connecting rod 31 and the movement path of the second connecting rod 32, respectively, to ensure that the connecting rod transmission assembly 30 can accurately complete the switching between the closed state, the re-clamping state and the tripping state, and improve the transmission accuracy of the connecting rod transmission assembly 30.

[0062] Specifically, such as Figure 2 and 5 As shown, in one embodiment, the latch 36 is rotatably connected to the housing 10, and a third elastic member 39 is provided between the latch 36 and the housing 10. When the third elastic member 39 is in its natural state, the latch 36 can be engaged with the third connecting rod 33.

[0063] A third elastic element 39 is provided between the latch 36 and the housing 10. Therefore, the third elastic element 39 can keep the latch 36 in a position that can be engaged with the third link 33. The latch 36 can only be driven to rotate by the release device 40, thereby realizing the separation of the latch 36 from the third link 33, or the latch 36 can be separated from the third link 33 by the movement of the third link 33. This helps to ensure the reliability and controllability of the engagement between the latch 36 and the third link 33.

[0064] Furthermore, in one embodiment, the third elastic element 39 can be a torsion spring or a spring. As long as the latch 36 can be rotated, the structure of the third elastic element 39 is not limited here. In this embodiment, a torsion spring is preferred.

[0065] The rotation axis between the latch 36 and the housing 10 is parallel to the central axis of the moving contact drive shaft 61.

[0066] Furthermore, the latch 36 is disposed on the bottom shell 11, and the bottom shell 11 is provided with a latch limiting block. When the third elastic member 39 is in its natural state, one end of the third elastic member 39 is connected to the latch 36, and the other end abuts against the latch limiting block. The latch limiting block is used to restrict the latch 36 from rotating clockwise. At the same time, the release device 40 can drive the latch 36 to rotate counterclockwise, so that the latch 36 is separated from the third connecting rod 33.

[0067] Furthermore, the latch 36 is provided with a latching protrusion, and the third link 33 is provided with a latching groove. The latching protrusion and the latching groove are latched together to restrict the third link 33 from rotating counterclockwise.

[0068] Specifically, such as Figure 4 and 7 As shown, in one embodiment, the trip unit 40 is provided with a telescopic push rod 41, and the push rod 41 is driven to extend and retract according to an external signal. When the push rod 41 extends, it abuts against the latch 36, providing the latch 36 with a force to rotate counterclockwise.

[0069] like Figure 3 As shown, in one embodiment, a disconnecting switch 200 is provided, including a switching device 60 and an operating mechanism 100, wherein the fifth link 35 of the operating mechanism 100 is connected to the moving contact drive shaft 61 of the switching device 60.

[0070] Multiple on / off devices 60 may be provided, and multiple on / off devices 60 are stacked and connected in sequence.

[0071] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0074] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0075] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0076] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An operating mechanism characterized by comprising: The utility model relates to a circuit breaker, including: A housing (10) and an operating handle (20) are arranged on the housing (10); A connecting rod transmission assembly (30) is arranged on the housing (10), the connecting rod transmission assembly (30) includes a first connecting rod (31), a second connecting rod (32), a third connecting rod (33), a fourth connecting rod (34), a fifth connecting rod (35) and a lock catch (36), the lock catch (36) is connected with the housing (10), the first connecting rod (31) is rotatably connected with the housing (10) and the second connecting rod (32) respectively, the third connecting rod (33) is rotatably connected with the second connecting rod (32) and the fourth connecting rod (34) respectively, the fifth connecting rod (35) is rotatably connected with the fourth connecting rod (34) and the housing (10) respectively, the fifth connecting rod (35) is connected with the moving contact transmission shaft (61) of a switch, the first connecting rod (31) is drivingly connected with the operating handle (20), and the rotating axis of the fifth connecting rod (35) and the housing (10) and the central axis of the moving contact transmission shaft (61) coincide; A first elastic member (37) is arranged between the first connecting rod (31) and the housing (10), a second elastic member (38) is arranged between the fifth connecting rod (35) and the housing (10), and a limiting block (113) is arranged on the housing (10), when the second elastic member (38) is in a natural state, the fifth connecting rod (35) abuts against the limiting block (113); When the connecting rod transmission assembly (30) is in a closing state, the lock catch (36) is buckled with the third connecting rod (33), the first elastic member (37) provides a force for the first connecting rod (31) to rotate counterclockwise, and the second elastic member (38) provides a force for the fifth connecting rod (35) to rotate clockwise, when the connecting rod transmission assembly (30) is in a reclosing opening state, the lock catch (36) is buckled with the third connecting rod (33), the first elastic member (37) provides a force for the first connecting rod (31) to rotate clockwise, and the second elastic member (38) is in a natural state, when the connecting rod transmission assembly (30) is in a tripping state, the lock catch (36) is separated from the third connecting rod (33), the first elastic member (37) is in a natural state, and the second elastic member (38) is in a natural state; A tripping device (40) can receive an external signal and drive the lock catch (36) according to the external signal, so that the connecting rod transmission assembly (30) is switched from the closing state or the reclosing opening state to the tripping state.

2. An operating mechanism according to claim 1, characterised in that The utility model further includes a handle middle arrangement (50), the handle middle arrangement (50) includes a first transmission shaft (51) connected with the operating handle (20) and a second transmission shaft (52) connected with the first connecting rod (31).

3. An operating mechanism according to claim 2, wherein The shell (10) comprises a bottom shell (11), a middle shell (12) and a top shell (13) connected in sequence, the first connecting rod (31) is rotationally connected with the bottom shell (11), the handle middle assembly (50) is connected with the middle shell (12), the operating handle (20) is connected with the top shell (13), the first transmission shaft (51) passes through the top shell (13) and is connected with the operating handle (20), and the second transmission shaft (52) passes through the middle shell (12) and is connected with the first connecting rod (31).

4. An operating mechanism according to claim 2, wherein The handle middle unit adopts a connecting rod transmission structure or a gear transmission structure, and provides a rotation angle of not less than 90° for the operating handle (20).

5. An operating mechanism according to claim 3, wherein The handle middle assembly (50) comprises a first handle transmission rod (53), a second handle transmission rod (54) and a third handle transmission rod (55), the first handle transmission rod (53) is connected with the first transmission shaft (51), the second handle transmission rod (54) is rotationally connected with the first handle transmission rod (53) and the third handle transmission rod (55) respectively, and the third handle transmission rod (55) is connected with the second transmission shaft (52).

6. An operating mechanism according to claim 1, wherein The shell (10) is provided with a first sliding groove (111), the shape of the first sliding groove (111) is adapted to the movement path of the connecting position of the first connecting rod (31) and the second connecting rod (32), the connecting position of the first connecting rod (31) and the second connecting rod (32) is provided with a first sliding block, and the first sliding block is in sliding fit with the first sliding groove (111).

7. An operating mechanism according to claim 6, wherein The shell (10) is provided with a second sliding groove (112), the first sliding groove (111) and the second sliding groove (112) are in communication with each other, the shape of the second sliding groove (112) is adapted to the movement path of the connecting position of the second connecting rod (32) and the third connecting rod (33), the connecting position of the second connecting rod (32) and the third connecting rod (33) is provided with a second sliding block, and the second sliding block is in sliding fit with the second sliding groove (112).

8. An operating mechanism according to claim 1, wherein The lock catch (36) is rotationally connected with the shell (10), a third elastic member (39) is arranged between the lock catch (36) and the shell (10), when the third elastic member (39) is in a natural state, the lock catch (36) can be buckled with the third connecting rod (33).

9. An operating mechanism according to claim 8, wherein The tripping device (40) is provided with a telescopic jack (41), and the telescopic jack (41) is driven to extend or retract according to an external signal, when the telescopic jack (41) is elongated, the telescopic jack (41) abuts against the lock catch (36) to provide a counterclockwise rotation force for the lock catch (36).

10. A disconnector, characterized in that The operating mechanism comprises a switch device (60) and the operating mechanism according to any one of claims 1-9, and a fifth connecting rod (35) of the operating mechanism is connected with a movable contact transmission shaft (61) of the switch device (60).

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