Opening and closing mechanism and isolating switch

Abstract

The utility model provides an opening and closing mechanism and an isolating switch, and belongs to the technical field of electrical components. Two pins of the torsional spring are respectively connected with the operating handle and a first connecting end of the connecting piece, a moving contact is arranged on one side, close to the static contact, of the first connecting end of the connecting piece, and a second connecting end of the connecting piece is rotationally connected to the shell. The first end of the elastic piece abuts against the shell, and the second end of the elastic piece abuts against the connecting piece. When the operating handle drives the connecting piece to rotate towards a first direction through the torsion spring, the first connecting end of the connecting piece drives the moving contact to rotate towards the static contact, so that the isolating switch is switched on. Moreover, when the connecting piece rotates towards the first direction, the connecting piece abuts against the elastic piece, so that the elastic piece is compressed to store energy. And when the operating handle drives the first pin to rotate towards a second direction, the elastic piece releases energy and pushes the connecting piece, so that the first connecting end of the connecting piece drives the moving contact to rotate back to the static contact, and the disconnecting switch is switched off. The opening and closing mechanism is simple in structure and beneficial to popularization and application of the isolating switch.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electrical components, and in particular to a switching mechanism and an isolating switch. Background Art

[0002] An isolating switch is a switch used to safely isolate equipment or lines in a power system. The isolating switch generally controls the opening and closing of the isolating switch through an opening and closing mechanism disposed in the housing to disconnect or connect the current circuit controlled by the isolating switch.

[0003] Existing opening and closing mechanisms usually use multi-link transmission and other methods to achieve opening and closing, but the structure of such opening and closing mechanisms is relatively complex, which is not conducive to the promotion and application of disconnectors. Utility Model Content

[0004] The present application provides an opening and closing mechanism and an isolating switch. The opening and closing mechanism has a relatively simple structure, which is conducive to the promotion and application of isolating switches.

[0005] In a first aspect, the present application provides a switch-on / off mechanism, which is applied to a disconnector, wherein the disconnector comprises a static contact and a movable contact that cooperate with each other, and the switch-on / off mechanism comprises a housing, an operating handle, a connecting piece, a torsion spring, and an elastic piece. The static contact, the torsion spring, and the elastic piece are all installed in the housing, and the operating handle is rotatably connected to the housing.

[0006] The first pin of the torsion spring is connected to the operating handle, the second pin of the torsion spring is connected to the first connecting end of the connecting member, a moving contact is provided on the side of the first connecting end of the connecting member close to the static contact, and the second connecting end of the connecting member is rotatably connected to the housing. The first end of the elastic member abuts against the housing, and the second end of the elastic member abuts against the connecting member. When the operating handle drives the connecting member to rotate in the first direction through the torsion spring, the first connecting end of the connecting member drives the moving contact to rotate toward the static contact to close the isolating switch.

[0007] Furthermore, when the connecting member rotates in the first direction, the connecting member pushes against the elastic member, so that the elastic member is compressed to store energy. When the operating handle drives the first pin to rotate in the second direction, the elastic member releases energy and pushes against the connecting member, so that the first connecting end of the connecting member drives the moving contact to rotate back to the static contact, so that the isolating switch is opened.

[0008] Through the above scheme, the first pin of the torsion spring is connected to the operating handle, the second pin of the torsion spring is connected to the first connecting end of the connecting member, and the connecting member is provided with a moving contact. The first end of the elastic member abuts against the housing, and the second end of the elastic member abuts against the connecting member. The opening and closing mechanism only needs the housing, the operating handle, the connecting member, the torsion spring and the elastic member to complete the opening and closing operation of the isolating switch, so as to realize the opening and closing operation of the isolating switch, so that the number of parts required for the opening and closing mechanism is small, and the connection relationship between the parts in the opening and closing mechanism is also relatively simple, so that the structure of the opening and closing mechanism is relatively simple, which is conducive to the promotion and application of the isolating switch.

[0009] In a possible design, the connector includes a body, a first connecting part, and a second connecting part, wherein the first connecting part is connected to an end of the body close to the moving contact, and the second connecting part is connected to an end of the body away from the moving contact. The first connecting part is connected to the second pin, and the second connecting part is rotatably connected to the housing.

[0010] Through the above scheme, since the first connecting part and the second connecting part are both arranged at the ends of the main body, the arrangement of the first connecting part and the second connecting part makes it easier for the connecting piece to be connected and matched with other components, so as to facilitate the installation and maintenance of the opening and closing mechanism, and is beneficial to improving the production and processing efficiency of the opening and closing mechanism.

[0011] In a possible design, the shell is provided with a limiting portion, a side of the main body facing the stationary contact is provided with a pushing portion, the first end of the elastic member cooperates with the limiting portion, and the second end of the elastic member cooperates with the pushing portion.

[0012] Through the above scheme, the push portion and the limit portion cooperate with the two ends of the elastic member respectively, so that the two ends of the elastic member are restricted in position, so that the elastic member can maintain good position stability, and the probability of displacement and misalignment of the elastic member during the opening and closing process of the disconnector can be reduced.

[0013] In a possible design, the limiting portion includes a first limiting wall, the first limiting wall is substantially parallel to a side of the main body facing the stationary contact, and the first end of the elastic member abuts against the first limiting wall.

[0014] Through the above scheme, the arrangement of the first limiting wall and the side of the main body facing the static contact being roughly parallel can enable the two ends of the elastic member to maintain stable contact with the first limiting wall and the main body respectively. On the one hand, it can facilitate the installation of the elastic member, and on the other hand, it can avoid large lateral displacement of the elastic member, so that the elastic member maintains good position stability.

[0015] The arrangement in which the first end of the elastic member abuts against the first limiting wall enables the first end to maintain a good contact degree with the first limiting wall, so that the first end maintains a good position stability, and the opening and closing mechanism maintains good working stability.

[0016] In a possible design, the limiting portion further includes a second limiting wall and a third limiting wall that are positioned opposite to each other, an activity space is formed between the first limiting wall, the second limiting wall and the third limiting wall, and the first end of the elastic member is located in the activity space.

[0017] Through the above scheme, the movable space formed between the first limiting wall, the second limiting wall and the third limiting wall can make the first end of the elastic member swing in a small range in the movable space, so that the first end of the elastic member can still maintain good position stability during the opening and closing process of the disconnector, thereby preventing the first end from separating from the limiting part.

[0018] In a possible design, the push portion is configured as a protrusion, and the second end of the elastic member is sleeved on the protrusion. Alternatively, the push portion is configured as a groove, and the second end of the elastic member is located in the groove.

[0019] Through the above scheme, when the push portion is a protrusion, the second end of the elastic member can be sleeved on the protrusion to limit the second end of the elastic member. When the push portion is a groove, the second end of the elastic member can be clamped in the groove to limit the second end of the elastic member. Through the cooperation of the push portion and the limiting portion, both ends of the elastic member can have a good limiting effect, so that the elastic member can maintain a good position stability during the opening and closing operation of the disconnector.

[0020] In a possible design, a limit piece is provided on the housing, and after the isolating switch is closed, the torsion spring abuts against the limit piece so that the moving contact is continuously subjected to the pressure exerted by the torsion spring.

[0021] Through the above solution, the cooperation between the limiter and the torsion spring can keep the moving contact and the static contact in good contact, so that the disconnector can maintain a stable closed state to obtain a stable working state.

[0022] In a second aspect, the present application further provides a disconnector, comprising the opening and closing mechanism of the first aspect.

[0023] In a possible design, the disconnector further includes an anti-mistaken closing member, the housing is provided with a mounting hole, and the anti-mistaken closing member is rotatably mounted in the mounting hole. When the anti-mistaken closing member rotates to the movement path of the operating handle, the anti-mistaken closing member can block the rotation of the operating handle to limit the closing of the disconnector.

[0024] Through the above solution, the anti-misclosing device is used to limit the closing of the isolating switch by blocking the rotation of the operating handle when the isolating switch needs to remain in the open state. Generally, when maintenance personnel need to perform maintenance on the circuit controlled by the isolating switch or the load in the circuit, the isolating switch needs to remain in the open state to avoid damage to the maintenance personnel or electrical appliances.

[0025] In a possible design, the isolating switch further comprises an observation window, and the housing is provided with the observation window, and the setting position of the observation window corresponds to the setting position of the static contact.

[0026] Through the above scheme, the observation window enables the operator to quickly obtain the opening and closing status of the disconnector, so as to avoid the operator working when the disconnector is closed, thereby avoiding safety accidents that may be caused by live working of the operator, thereby improving the safety performance of the disconnector.

[0027] The beneficial effects of the isolating switch provided in the above-mentioned second aspect and each possible design of the above-mentioned second aspect can be referred to the beneficial effects brought about by the above-mentioned first aspect and each possible implementation method of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the overall structure of an isolating switch provided in an embodiment of the present application.

[0029] Figure 2 A schematic structural diagram of a switch opening and closing mechanism provided in an embodiment of the present application at a first viewing angle.

[0030] Figure 3 A schematic structural diagram of a switch opening and closing mechanism provided in an embodiment of the present application at a second viewing angle.

[0031] Figure 4 A schematic diagram of the structure of a torsion spring provided in an embodiment of the present application.

[0032] Figure 5 A schematic structural diagram of a connector provided in an embodiment of the present application at a first viewing angle.

[0033] Figure 6 A schematic diagram of the structure of a shell provided in an embodiment of the present application.

[0034] Figure 7 A schematic structural diagram of a connector provided in an embodiment of the present application at a second viewing angle.

[0035] Figure 8 for Figure 6 A partial enlarged schematic diagram of position A in the middle.

[0036] Figure symbols: 1. opening and closing mechanism; 11. shell; 111. limiting part; 1111. first limiting wall; 1112. second limiting wall; 1113. third limiting wall; 112. limiting member; 12. operating handle; 13. connecting member; 131. first connecting end; 132. second connecting end; 133. main body; 134. first connecting part; 135. second connecting part; 136. pushing part; 14. torsion spring; 141. first pin; 142. second pin; 15. elastic member; 151. first end; 152. second end; 2. isolating switch; 21. static contact; 22. moving contact; 23. anti-misclosing member; 24. mounting hole; 25. observation window. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

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

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

[0040] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

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

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

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

[0044] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure can refer to a physical connection. For example, the physical connection can be a fixed connection, such as a fixed connection through a barrier, such as a fixed connection through a screw, bolt or other barrier; the physical connection can also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection can also be an integral connection, such as welding, bonding or integral molding to form a connection for connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. The "connection" or "connection" of a circuit structure can refer to not only a physical connection, but also an electrical connection or a signal connection. For example, it can be a direct connection, that is, a physical connection, or it can be indirectly connected through at least one intermediate element, as long as the circuit is connected, and it can also be the internal connection of two elements; the signal connection can refer to a signal connection through a media medium, such as a radio wave, in addition to a signal connection through a circuit. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Figure 1 This is a schematic diagram of the overall structure of an isolating switch provided in an embodiment of the present application. Figure 2 A schematic structural diagram of a switch opening and closing mechanism provided in an embodiment of the present application at a first viewing angle.

[0046] like Figure 1 and Figure 2 As shown, the present application provides a disconnector 2, comprising a moving contact 22, a stationary contact 21, a switch-on / off mechanism 1 and a housing 11. The stationary contact 21 and the switch-on / off mechanism 1 are both installed in the housing 11, and the moving contact 22 is connected to the switch-on / off mechanism 1.

[0047] The opening or closing of the isolating switch 2 is mainly achieved by the separation or contact of the moving contact 22 and the stationary contact 21 .

[0048] The moving contact 22 refers to the part of the actuator that moves with the opening and closing process of the disconnector 2. The stationary contact 21 refers to the part of the actuator that does not move with the opening and closing process of the disconnector 2.

[0049] The housing 11 can block pollution and foreign matter in the external environment, reduce the risk of damage to components in the housing 11 due to the external environment, and thus protect the components installed in the housing 11.

[0050] The specific structural form of the opening and closing mechanism 1 will be described in detail below and will not be expanded here.

[0051] The disconnector 2 further includes an anti-mistaken closing member 23. The housing 11 is provided with a mounting hole 24. The anti-mistaken closing member 23 is rotatably mounted in the mounting hole 24. When the anti-mistaken closing member 23 rotates to the movement path of the operating handle 12, the anti-mistaken closing member 23 can block the rotation of the operating handle 12 to limit the closing of the disconnector 2.

[0052] The anti-misclosing member 23 is used to limit the closing of the isolating switch 2 by blocking the rotation of the operating handle 12 when the isolating switch 2 needs to remain in the open state. Generally, when maintenance personnel need to perform maintenance on the circuit controlled by the isolating switch 2 or the load in the circuit, the isolating switch 2 needs to remain in the open state to avoid damage to the maintenance personnel or electrical appliances.

[0053] The isolating switch 2 further comprises an observation window 25 , and the housing 11 is provided with the observation window 25 . The setting position of the observation window 25 corresponds to the setting position of the static contact 21 .

[0054] The static contact 21 will not move with the actuator during the opening and closing process of the isolating switch 2. When the isolating switch 2 is closed, the moving contact 22 will move with the actuator to the position of the static contact 21 to achieve contact between the moving and static contacts 21, so that the isolating switch 2 is in a closed state. Therefore, the position of the observation window 25 is set corresponding to the position of the static contact 21, so that the contact status of the moving and static contacts 21 can be obtained through the observation window 25, so that the operator can quickly obtain the opening and closing status of the isolating switch 2.

[0055] Specifically, any area on the housing 11 where the contact status of the moving and static contacts 21 can be clearly observed can serve as the location for setting the observation window 25 .

[0056] In an optional embodiment, an observation port is provided on the housing 11, a mounting groove connected to the observation port is provided on the housing 11, an observation window 25 is installed in the mounting groove, and the observation window 25 can cover the observation port. The observation window 25 can be made of a transparent material, for example, a transparent plastic sheet, transparent glass, etc.

[0057] The observation window 25 enables the operator to quickly obtain the opening and closing status of the disconnector 2 to avoid the operator working when the disconnector 2 is closed, thereby avoiding safety accidents that may occur when the operator works under power, thereby improving the safety performance of the disconnector 2.

[0058] Figure 3 A schematic diagram of the structure of a switch opening and closing mechanism provided in an embodiment of the present application at a second viewing angle, Figure 4 A schematic diagram of the structure of a torsion spring provided in an embodiment of the present application.

[0059] See also Figures 2 to 4 The present application provides a switch-on / off mechanism 1, which is applied to a disconnector 2. The disconnector 2 includes a static contact 21 and a moving contact 22 that cooperate with each other. The switch-on / off mechanism 1 includes a housing 11, an operating handle 12, a connecting piece 13, a torsion spring 14, and an elastic piece 15. The static contact 21, the torsion spring 14, and the elastic piece 15 are all installed in the housing 11, and the operating handle 12 is rotatably connected to the housing 11.

[0060] The first pin 141 of the torsion spring 14 is connected to the operating handle 12, the second pin 142 of the torsion spring 14 is connected to the first connection end 131 of the connecting member 13, the first connection end 131 of the connecting member 13 is provided with a moving contact 22 on one side close to the static contact 21, and the second connection end 132 of the connecting member 13 is rotatably connected to the housing 11. The first end 151 of the elastic member 15 abuts against the housing 11, and the second end 152 of the elastic member 15 abuts against the connecting member 13.

[0061] When the operating handle 12 drives the connecting member 13 to rotate in the first direction through the torsion spring 14, the first connecting end 131 of the connecting member 13 drives the moving contact 22 to rotate toward the static contact 21, so that the disconnector 2 is closed. In addition, when the connecting member 13 rotates in the first direction, the connecting member 13 pushes the elastic member 15, so that the elastic member 15 is compressed to store energy. When the operating handle 12 drives the first pin 141 to rotate in the second direction, the elastic member 15 releases energy and pushes the connecting member 13, so that the first connecting end 131 of the connecting member 13 drives the moving contact 22 to rotate away from the static contact 21, so that the disconnector 2 is opened.

[0062] The torsion spring 14, also known as a torsion spring, is a spring that can store and release energy by twisting. The torsion spring 14 is usually made of round or square steel wire and is in a spiral shape.

[0063] In the present application, the first pin 141 of the torsion spring 14 is connected to the operating handle 12, and the second pin 142 is connected to the first connection end 131 of the connecting member 13. This arrangement enables the torsion spring 14 to play a role of connecting the preceding and following, so that the rotation of the operating handle 12 can drive the connecting member 13 to move through the torsion spring 14. Since the moving contact 22 is arranged on the connecting member 13, the moving contact 22 moves synchronously with the connecting member 13.

[0064] The first pin 141 of the torsion spring 14 and the operating handle 12 may be connected in a tight fit manner, and the second pin 142 of the torsion spring 14 and the first connecting end 131 of the connecting member 13 may also be connected in a tight fit manner.

[0065] The connection between the first connection end 131 of the connector 13 and the moving contact 22 may be a non-detachable connection such as welding, gluing, riveting, etc., or a detachable connection such as snap connection, threaded connection, etc.

[0066] The rotational connection between the second connection end 132 of the connection member 13 and the housing 11 can be achieved through a shaft connection.

[0067] The material of the connecting member 13 can be a metal material, so as to form an electrical connection between the connecting member 13 and the moving contact 22, so that a complete circuit can be formed after the isolating switch 2 is closed.

[0068] The elastic member 15 generally refers to a material that can restore to its original shape after the external force is removed, and the elastic member 15 may be a spring, a spring sheet, etc. Under the premise of not affecting the performance of the elastic member 15 , the embodiment of the present application does not limit the specific form of the elastic member 15 .

[0069] The first end 151 of the elastic member 15 abuts against the housing 11, and the second end 152 abuts against the connecting member 13, so that the elastic member 15 can extend and retract following the movement of the connecting member 13. The first end 151 of the elastic member 15 abuts against the housing 11, and the second end 152 of the elastic member 15 abuts against the connecting member 13.

[0070] The first direction is opposite to the second direction, wherein the first direction is a direction toward the stationary contact 21 , and the second direction is a direction away from the stationary contact 21 .

[0071] In the embodiment of the present application, the first pin 141 of the torsion spring 14 is connected to the operating handle 12, the second pin 142 of the torsion spring 14 is connected to the first connecting end 131 of the connecting member 13, and the connecting member 13 is provided with a moving contact 22. The first end 151 of the elastic member 15 abuts against the housing 11, and the second end 152 of the elastic member 15 abuts against the connecting member 13. The opening and closing mechanism 1 only needs the housing 11, the operating handle 12, the connecting member 13, the torsion spring 14 and the elastic member 15 to complete the opening and closing operation of the disconnector 2, so as to realize the opening and closing operation of the disconnector 2, so that the number of parts required for the opening and closing mechanism 1 is small, and the connection relationship of the parts in the opening and closing mechanism 1 is also relatively simple, so that the structure of the opening and closing mechanism 1 is relatively simple, which is conducive to the promotion and application of the disconnector 2. Figure 5 A schematic structural diagram of a connector provided in an embodiment of the present application at a first viewing angle.

[0072] like Figures 3 to 5 As shown, the connecting member 13 includes a body portion 133, a first connecting portion 134 and a second connecting portion 135. The first connecting portion 134 is connected to one end of the body portion 133 close to the moving contact 22, and the second connecting portion 135 is connected to one end of the body portion 133 away from the moving contact 22. The first connecting portion 134 is connected to the second pin 142, and the second connecting portion 135 is rotatably connected to the housing 11.

[0073] The body portion 133 is the main part of the connector 13 , and the shape of the body portion 133 may be columnar, bar-shaped, or the like.

[0074] The first connection part 134 and the second connection part 135 may be in the shape of a sheet, a strip, a column, etc. Without affecting the performance of the connector 13 , the embodiment of the present application does not limit the specific shapes of the body 133 , the first connection part 134 and the second connection part 135 .

[0075] The first connection portion 134 and the main body portion 133 may be connected by welding, gluing, riveting or other non-detachable connections, or by snap-fitting, threading or other detachable connections.

[0076] The second connection portion 135 and the main body portion 133 may be connected by welding, gluing, riveting or other non-detachable connections, or by snap-fitting, threading or other detachable connections.

[0077] In an optional embodiment, the first connection part 134, the second connection part 135 and the main body 133 are made by metal integrated molding, which can not only realize the connection relationship between the first connection part 134, the second connection part 135 and the main body 133, but also simplify the processing steps of the connector 13. Specifically, the connector 13 can be made by metal integrated molding such as metal injection molding, which can improve the production and processing efficiency of the connector 13.

[0078] Since the first connecting portion 134 and the second connecting portion 135 are both arranged at the ends of the main body 133, the setting of the first connecting portion 134 and the second connecting portion 135 makes it easier for the connecting piece 13 to be connected and matched with other components, so as to facilitate the installation and maintenance of the opening and closing mechanism 1, which is beneficial to improving the production and processing efficiency of the opening and closing mechanism 1.

[0079] Figure 6 A schematic diagram of the structure of a housing provided in an embodiment of the present application is shown in FIG. Figure 7 A schematic structural diagram of a connector provided in an embodiment of the present application at a second viewing angle.

[0080] See also Figure 2 , Figure 3 , Figure 6 and Figure 7 The housing 11 is provided with a limiting portion 111 , a push portion 136 is provided on the side of the body 133 facing the stationary contact 21 , a first end 151 of the elastic member 15 cooperates with the limiting portion 111 , and a second end 152 of the elastic member 15 cooperates with the push portion 136 .

[0081] The connection between the limiting portion 111 and the housing 11 may be a non-detachable connection such as welding, gluing, riveting, etc., or a detachable connection such as a snap connection, threaded connection, etc.

[0082] The connection between the push portion 136 and the main body 133 may be a non-detachable connection such as welding, gluing, riveting, etc., or a detachable connection such as a snap connection, threaded connection, etc.

[0083] In an optional embodiment, the limiting portion 111 and the shell 11 are manufactured using an integrated molding process. Specifically, the limiting portion 111 and the shell 11 can be manufactured using an injection molding process. This process can enable the limiting portion 111 and the shell 11 to form a good connection strength, and can also simplify the processing technology of the shell 11, which is beneficial to improving the production and processing efficiency of the shell 11.

[0084] In an optional embodiment, the push portion 136 and the body portion 133 are formed by metal integration. The integrated forming process can not only realize the connection relationship between the push portion 136 and the body portion 133, but also simplify the processing steps of the connector 13. Specifically, the connector 13 can be formed by metal integration such as metal injection molding, which can improve the production and processing efficiency of the connector 13.

[0085] The push portion 136 and the limit portion 111 cooperate with the two ends of the elastic member 15 respectively, so that the two ends of the elastic member 15 are positionally restricted, so that the elastic member 15 can maintain good position stability and reduce the probability of displacement and misalignment of the elastic member 15 during the opening and closing of the disconnector 2.

[0086] Figure 8 for Figure 6 A partial enlarged schematic diagram of position A in the middle.

[0087] like Figure 6 and Figure 8 As shown, the limiting portion 111 includes a first limiting wall 1111 , which is substantially parallel to a side of the body portion 133 facing the stationary contact 21 , and the first end 151 of the elastic member 15 abuts against the first limiting wall 1111 .

[0088] The first limiting wall 1111 is roughly parallel to the side of the main body 133 facing the static contact 21, which means that when the isolating switch 2 is in the open state, the plane where the first limiting wall 1111 is located and the plane where the side of the main body 133 facing the static contact 21 is located are parallel to each other, or the angle between the plane where the first limiting wall 1111 is located and the plane where the side of the main body 133 facing the static contact 21 is located is a small acute angle, such as 5°, 7°, 10°, etc.

[0089] The roughly parallel arrangement of the first limiting wall 1111 and the main body 133 on the side facing the static contact 21 can enable the two ends of the elastic member 15 to maintain stable contact with the first limiting wall 1111 and the main body 133 respectively. On the one hand, it can facilitate the installation of the elastic member 15, and on the other hand, it can prevent the elastic member 15 from producing a large lateral displacement, so that the elastic member 15 maintains good position stability.

[0090] The arrangement in which the first end 151 of the elastic member 15 abuts against the first limiting wall 1111 enables the first end 151 to maintain a good contact degree with the first limiting wall 1111, so that the first end 151 maintains a good position stability, and the opening and closing mechanism 1 maintains good working stability.

[0091] See also Figure 7The limiting portion 111 also includes a second limiting wall 1112 and a third limiting wall 1113 that are positioned opposite to each other. An activity space is formed between the first limiting wall 1111, the second limiting wall 1112 and the third limiting wall 1113, and the first end 151 of the elastic member 15 is located in the activity space.

[0092] The second limiting wall 1112 and the third limiting wall 1113 are located on both sides of the first limiting wall 1111. Specifically, the plane where the second limiting wall 1112 and the plane where the third limiting wall 1113 are located form an angle of about 90° with the plane where the first limiting wall 1111 is located, such as 89°, 90°, 95°, etc.

[0093] The movable space formed between the first limiting wall 1111, the second limiting wall 1112 and the third limiting wall 1113 allows the first end 151 of the elastic member 15 to swing in a small range within the movable space, so that the first end 151 of the elastic member 15 can still maintain good position stability during the opening and closing process of the disconnector 2, thereby preventing the first end 151 from separating from the limiting portion 111.

[0094] In an alternative embodiment, Figure 7 As shown, the push portion 136 is configured as a protrusion, and the second end 152 of the elastic member 15 is sleeved on the protrusion.

[0095] In another optional embodiment, the pushing portion 136 is configured as a groove (not shown in the figure), and the second end 152 of the elastic member 15 is located in the groove.

[0096] When the push portion 136 is a protrusion, the second end 152 of the elastic member 15 can be sleeved on the protrusion to limit the second end 152 of the elastic member 15. And through the cooperation between the protrusion and the limiting portion 111, both ends of the elastic member 15 can be better limited, so that the elastic member 15 can maintain good position stability during the opening and closing of the disconnector 2.

[0097] When the push portion 136 is a groove, the second end 152 of the elastic member 15 can be engaged with the groove to limit the second end 152 of the elastic member 15. The groove and the limiting portion 111 cooperate to limit both ends of the elastic member 15, so that the elastic member 15 can maintain good position stability during the opening and closing of the disconnector 2.

[0098] like Figure 2 , Figure 3 and Figure 6 As shown, a limiter 112 is provided on the housing 11 . After the isolating switch 2 is closed, the torsion spring 14 abuts against the limiter 112 , so that the moving contact 22 is continuously subjected to the pressure applied by the torsion spring 14 .

[0099] During the closing process of the disconnector 2, the rotation of the operating handle 12 causes the torsion spring 14 to deform, and the connecting member 13 connected to the torsion spring 14 is subjected to the force generated by the deformation of the torsion spring 14, so that the connecting member 13 moves in the direction where the stationary contact 21 is located. Since the connecting member 13 is connected to the moving contact 22, the moving contact 22 is also subjected to the force generated by the deformation of the torsion spring 14.

[0100] After the torsion spring 14 abuts against the limiter 112, the deformation of the torsion spring 14 is limited by the limiter 112, so that after the disconnector 2 is closed, the torsion spring 14 still maintains the deformation degree when the disconnector 2 is closed. This makes the moving contact 22 continuously subjected to the pressure applied by the torsion spring 14. At this time, the moving contact 22 is already in contact with the stationary contact 21, so the pressure applied by the torsion spring 14 keeps the moving contact 22 and the stationary contact 21 in good contact.

[0101] Therefore, the cooperation between the stopper 112 and the torsion spring 14 can keep the moving contact 22 and the stationary contact 21 in good contact, so that the isolating switch 2 can maintain a stable closing state to obtain a stable working state.

Claims

1. A switch-on / off mechanism, applied to a disconnector, the disconnector comprising a static contact and a moving contact cooperating with each other, characterized in that: The opening and closing mechanism comprises a housing, an operating handle, a connecting piece, a torsion spring and an elastic piece; the static contact, the torsion spring and the elastic piece are all installed in the housing, and the operating handle is rotatably connected to the housing; The first pin of the torsion spring is connected to the operating handle, the second pin of the torsion spring is connected to the first connecting end of the connecting member, the moving contact is provided on the side of the first connecting end of the connecting member close to the static contact, and the second connecting end of the connecting member is rotatably connected to the housing; the first end of the elastic member abuts against the housing, and the second end of the elastic member abuts against the connecting member; When the operating handle drives the connecting member to rotate in the first direction through the torsion spring, the first connecting end of the connecting member drives the moving contact to rotate toward the static contact, so that the disconnector is closed; and when the connecting member rotates in the first direction, the connecting member pushes against the elastic member, so that the elastic member is compressed to store energy; When the operating handle drives the first pin to rotate in the second direction, the elastic member releases energy and pushes the connecting member, so that the first connecting end of the connecting member drives the moving contact to rotate away from the static contact, so as to open the isolating switch.

2. The opening and closing mechanism according to claim 1, characterized in that: The connecting member comprises a main body, a first connecting part and a second connecting part, wherein the first connecting part is connected to an end of the main body close to the moving contact, and the second connecting part is connected to an end of the main body away from the moving contact; The first connection portion is connected to the second pin, and the second connection portion is rotatably connected to the housing.

3. The opening and closing mechanism according to claim 2, characterized in that: The housing is provided with a limiting portion, a side of the main body facing the stationary contact is provided with a pushing portion, a first end of the elastic member cooperates with the limiting portion, and a second end of the elastic member cooperates with the pushing portion.

4. The opening and closing mechanism according to claim 3, characterized in that: The limiting portion includes a first limiting wall, the first limiting wall is substantially parallel to a side of the main body portion facing the stationary contact, and the first end of the elastic member abuts against the first limiting wall.

5. The opening and closing mechanism according to claim 4, characterized in that: The limiting portion further comprises a second limiting wall and a third limiting wall which are opposite to each other, an activity space is formed among the first limiting wall, the second limiting wall and the third limiting wall, and the first end of the elastic member is located in the activity space.

6. The opening and closing mechanism according to any one of claims 3 to 5, characterized in that: The push portion is configured as a protrusion, and the second end of the elastic member is sleeved on the protrusion; or, The pushing portion is configured as a groove, and the second end of the elastic member is located in the groove.

7. The opening and closing mechanism according to claim 1, characterized in that: The housing is provided with a limiter. After the isolating switch is closed, the torsion spring abuts against one side of the limiter to keep the torsion spring in a deformed state, and the moving contact is continuously subjected to the pressure applied by the torsion spring.

8. An isolating switch, characterized in that: It comprises the opening and closing mechanism as described in any one of claims 1 to 7.

9. The isolating switch according to claim 8, characterized in that: The isolating switch further comprises an anti-mis-closing member, the housing is provided with a mounting hole, and the anti-mis-closing member is rotatably mounted in the mounting hole; When the anti-mis-closing member rotates to the movement path of the operating handle, the anti-mis-closing member can block the rotation of the operating handle to limit the closing of the disconnector.

10. The isolating switch according to claim 9, characterized in that: The isolating switch further comprises an observation window, and the housing is provided with the observation window; The setting position of the observation window corresponds to the setting position of the static contact.

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