Moving contact support and isolating switch
By designing a simplified moving contact bracket, including the bracket body and specific mounting holes, the complex structure and inconvenient assembly of the moving contact assembly in the prior art are solved, and a simpler structure and a more convenient assembly process are achieved, saving costs.
Patent Information
- Application Number
- CN202510244121.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-05-06
AI Technical Summary
The composition structure of the existing disconnector center dynamic contact assembly is relatively complex and inconvenient to assembly.
A movable contact bracket is provided, including a bracket body, a first mounting hole and a second mounting hole, through which the elastic members and movable contacts of the movable contact assembly are installed, simplifying the structure and assembly process of the movable contact assembly.
The structural composition of the dynamic contact assembly is simplified, the composition structure is reduced, the assembly is more convenient, and the cost is saved.
Smart Images
Figure CN119943606A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical connection devices, and in particular to a moving contact bracket and an isolating switch. Background Art
[0002] An isolating switch is an electrical device used in power systems. It is mainly used to safely disconnect part of a circuit from other live parts during maintenance, repair or troubleshooting to ensure that workers can operate in a power-free state.
[0003] An existing isolating switch drives a movable contact assembly by rotating a handle to drive a connecting rod, and realizes the connection and disconnection of the movable contact and the static contact through the reciprocating linear motion of the movable contact assembly. The defect of this type of isolating switch is that the structure of the movable contact assembly is relatively complex. Summary of the invention
[0004] The present application provides a moving contact bracket and an isolating switch, wherein the moving contact bracket helps to simplify the structural composition of the moving contact assembly, thereby also simplifying the structural composition of the isolating switch.
[0005] The technical solutions of this application are as follows:
[0006] In a first aspect, the present application provides a moving contact bracket, including a bracket body, wherein a first mounting hole and a second mounting hole are formed in the bracket body.
[0007] The first mounting hole is arranged at one end of the bracket body, the axial direction of the first mounting hole is parallel to the sliding direction of the bracket body, and the first mounting hole is used to mount the elastic member of the moving contact assembly.
[0008] The second mounting hole is arranged along the circumference of the first mounting hole and is connected to the first mounting hole. The first opening size of the second mounting hole is larger than the second opening size, the measuring direction of the first opening size is parallel to the sliding direction of the bracket body, and the measuring direction of the second opening size is along the circumference of the bracket body. The second mounting hole is used to connect the connecting rod and the elastic member in the isolating switch.
[0009] By using the moving contact bracket provided by the first aspect, when the moving contact bracket is used to form a moving contact assembly, the moving contact assembly only includes the moving contact bracket, the moving contact and the elastic member. Compared with the moving contact assembly provided by the prior art, while achieving the same function, the connecting block and the second elastic member are saved, the structure is simpler, the assembly is more convenient, and the cost is saved.
[0010] In a possible design, a third mounting hole is further provided on the bracket body. The third mounting hole is provided in the extension direction of the first mounting hole. The third mounting hole intersects with the first mounting hole. The third mounting hole is used to install the moving contact of the isolating switch.
[0011] Based on the moving contact bracket provided in this embodiment, a third mounting hole connected with the first mounting hole is arranged in the extension direction of the first mounting hole, and the third mounting hole intersects with the first mounting hole. The third mounting hole is used to install the moving contact. In this way, when the moving contact assembly is assembled, the moving contact can provide axial positioning for the elastic member. In this way, the assembly of the moving contact assembly is facilitated, and the structure of the moving contact bracket itself is also simplified.
[0012] In a possible design, the third mounting hole includes a main body hole, and the main body hole is used for interference fit with the moving contact plate of the moving contact.
[0013] Based on the moving contact bracket provided in this embodiment, the main body hole and the moving contact plate are interference fit, so that the relative positions of the moving contact plate and the moving contact bracket are fixed, and the moving contact plate will not move relative to the moving contact bracket. In this way, the position stability of the moving contact can be ensured, and the phenomenon of position deviation of the moving contact can be avoided, thereby improving the contact stability between the moving contact and the static contact.
[0014] In a possible design, the third mounting hole also includes a through hole.
[0015] In the extension direction of the first mounting hole, the through hole is located on one side or both sides of the main body hole and is connected to the main body hole. The through hole can allow the moving contact point of the moving contact to pass through.
[0016] Based on the movable contact bracket provided in this embodiment, the third mounting hole includes a through hole, and the through hole can allow the movable contact of the movable contact to pass through. In this way, before the movable contact and the movable contact bracket are assembled, the movable contact and the movable contact plate can be fixed by riveting, welding, etc., and then the complete movable contact and the movable contact bracket are assembled. In this way, the assembly efficiency of the movable contact and the movable contact bracket can be improved, and the assembly of the movable contact itself is more convenient. In addition, the through hole also helps the heat dissipation of the isolating switch.
[0017] In a possible design, the first mounting hole is a cylindrical hole or a square hole.
[0018] Based on the moving contact bracket provided in this embodiment, the first mounting hole is set as a cylindrical hole, and the elastic member and the first mounting hole are gap-matched. In this way, the first mounting hole can play a good guiding role in the movement of the elastic member, reduce the force deviation phenomenon of the elastic member during the compression process, and the force on the moving contact is more uniform and stable, and the contact between the moving contact and the static contact is more reliable.
[0019] Based on the moving contact bracket provided in this embodiment, the second mounting hole is a waist-shaped hole, so that the moving contact bracket can better cooperate with the connecting rod to meet the displacement requirements of the connecting rod when the disconnector is closed or opened, and the matching degree between the connecting rod and the moving contact bracket is better, and the processing and manufacturing is also more convenient.
[0020] In a possible design, a convex arc surface is also provided on the circumference of the bracket body to facilitate the sliding of the bracket body.
[0021] Based on the moving contact bracket provided in this embodiment, during the closing and opening process of the isolating switch, the bracket body moves linearly relative to the shell. In order to cooperate with the linear movement of the bracket body, the part where the shell and the bracket body cooperate is a plane. In some embodiments of the present application, the bracket body is provided with a convex arc surface that facilitates the sliding of the bracket body, so that the matching part between the bracket body and the shell is in line contact. This matching structure can not only reduce the wear of the bracket body during the sliding process, but also prevent the bracket body and the shell from getting stuck.
[0022] In the second aspect, based on the same inventive concept, the present application also provides a disconnector, including a housing, a rotating part, a moving contact assembly, a stationary contact and a connecting rod.
[0023] The rotating member is rotatably connected to the shell.
[0024] The moving contact assembly comprises a moving contact bracket, a moving contact and an elastic member. The contact bracket is any one of the moving contact brackets described above. The elastic member is arranged through the first mounting hole. The moving contact is linked to the bracket body.
[0025] The stationary contact is arranged at one end of the bracket body away from the rotating member and is opposite to the moving contact.
[0026] The connecting rod includes a first end and a second end, the first end is hinged to the rotating member, and the second end is inserted into the second mounting hole and abuts against the elastic member. The connecting rod can make the moving contact contact with the static contact and maintain the contact force by compressing the elastic member.
[0027] Based on the isolating switch provided in the second aspect, the isolating switch adopts the moving contact bracket of the first aspect. Its beneficial effects can be referred to the beneficial effects brought by the first aspect and each possible implementation method of the first aspect, which will not be repeated here.
[0028] In addition, based on the isolating switch provided in the second aspect, the housing, the rotating member, the connecting rod, and the moving contact assembly are connected to each other to form a four-bar mechanism. When the isolating switch is closed, the rotating member drives the moving contact assembly through the connecting rod, and after passing the dead point of the four-bar mechanism, the moving contact contacts the stationary contact. In this way, the contact between the moving contact and the stationary contact is relatively stable.
[0029] In a possible design, the elastic member is a cylindrical spring.
[0030] Based on the isolating switch provided by this embodiment, the isolating switch selects a cylindrical spring as the elastic member. The cylindrical spring itself has a relatively symmetrical structure. When the connecting rod acts on the moving contact through the cylindrical spring, the cylindrical spring has a lighter force offset phenomenon than asymmetric structures such as spring plates, which is conducive to maintaining reliable contact between the moving contact and the static contact.
[0031] In a possible design, the isolating switch further includes a torsion spring, one end of which is connected to the housing, and the other end of which is connected to the rotating member, for accelerating the closing and opening of the isolating switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 Shown is a structural schematic diagram of a moving contact assembly in the prior art.
[0033] Figure 2 Shown is a schematic structural diagram of a moving contact bracket provided in an embodiment of the present application.
[0034] Figure 3 for Figure 2 Left view of .
[0035] Figure 4 The figure shows a schematic structural diagram of an isolating switch in an open state provided by an embodiment of the present application.
[0036] Figure 5 Shown is a schematic structural diagram of an isolating switch in a closed state provided in an embodiment of the present application.
[0037] Figure 6 Shown Figure 4 , Figure 5 Schematic diagram of the structure of the moving contact assembly.
[0038] Figure 7 for Figure 6 Top view of .
[0039] Figure 8 for Figure 7 AA cross-section diagram.
[0040] Fig. 9 for Figure 2 The structure schematic diagram of the moving contact support shown in another perspective.
[0041] Fig.10 A schematic structural diagram of an isolating switch provided in an embodiment of the present application when a torsion spring is in a maximum compression state during a closing process.
[0042] The accompanying drawings in the prior art are:
[0043] 3', moving contact assembly; 31', moving contact bracket; 311', first elastic member mounting hole; 312', second elastic member mounting hole; 32', moving contact; 33', first elastic member; 34', connecting block; 35', second elastic member; 4', connecting rod;
[0044] The accompanying drawings in this application are as follows:
[0045] 1. Shell; 11. First half shell; 111. Slideway;
[0046] 2. Rotating part; 21. Operating part; 22. Driving part;
[0047] 3. Moving contact assembly; 31. Moving contact bracket; 311. Bracket body; 311A. First convex arc surface; 311B. Second convex arc surface; 311C. Third convex arc surface; 311D. Fourth convex arc surface; 312. First mounting hole; 313. Second mounting hole; 313A. First opening size; 313B. Second opening size; 314. Third mounting hole; 3141. Main body hole; 3142. Through hole; 32. Moving contact; 321. Moving contact plate; 322. Moving contact point; 33. Elastic member; 4. Static contact; 5. Connecting rod; 6. Torsion spring. DETAILED DESCRIPTION
[0048] 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.
[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein 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 and claims and the accompanying drawings of this application are intended to cover non-exclusive inclusions.
[0050] 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.
[0051] 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.
[0052] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a barrier member, such as a fixed connection through screws, bolts or other barrier members. The physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit connection. The physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0053] The following is a detailed description of the present application based on the background technology.
[0054] As described in the background technology, the existing isolating switch drives the moving contact assembly by rotating the handle to drive the connecting rod, and the moving contact and the static contact are connected and disconnected through the reciprocating linear motion of the moving contact assembly. The defects of this type of isolating switch are: the composition structure of the moving contact assembly is relatively complex and inconvenient to assemble.
[0055] For more information, see Figure 1 , Figure 1 The figure shows a structural schematic diagram of a movable contact assembly 3' in the prior art. In the prior art, the movable contact assembly 3' includes a movable contact bracket 31', a movable contact 32', a first elastic member 33', a connecting block 34' and a second elastic member 35', etc., wherein the movable contact 32' is linked with the movable contact bracket 31', the movable contact bracket 31' is provided with a first elastic member mounting hole 311' and a second elastic member mounting hole 312', the first elastic member mounting hole 311' and the second elastic member mounting hole 312' are relatively arranged at opposite ends of the movable contact bracket 31', the first elastic member 33' is arranged at the first elastic member mounting hole 311', and the second elastic member 35' is arranged at the second elastic member mounting hole 312'. The connecting block 34' contacts the first elastic member 33', and the connecting block 34' is provided with a connecting rod mounting hole for connecting the connecting rod 4'.
[0056] The working principle of the moving contact assembly 3' of this structure is as follows:
[0057] When the disconnector is closed, the connecting rod 4' applies downward pressure to the first elastic member 33' through the connecting block 34', the first elastic member 33' is compressed, and the pressure is transmitted to the moving contact 32', the moving contact 32' drives the moving contact bracket 31' to move toward the static contact under the pressure, the moving contact 32' contacts the static contact, and the disconnector is closed. During the closing process, the second elastic member 35' is compressed by the moving contact bracket 31' and stores energy.
[0058] When the disconnector is opened, the connecting rod 4' drives the connecting block 34' to move upward, and the first elastic member 33' gradually recovers its deformation. At the same time, the second elastic member 35' releases the stored energy, pushing the moving contact bracket 31' to move upward, and the moving contact 32' moves upward accordingly, thereby realizing the separation of the moving contact 32' and the static contact, and completing the opening.
[0059] The movable contact assembly 3' of the above structure has a relatively complex structure and is inconvenient to assemble.
[0060] In order to solve the technical problems of the complex structure and inconvenient assembly of the moving contact assembly in the existing isolating switch, the present application provides a moving contact bracket.
[0061] Figure 2 FIG. 1 is a schematic diagram of the structure of a moving contact bracket provided in an embodiment of the present application. Figure 3 for Figure 2 Please refer to Figure 2 and Figure 3 The moving contact bracket 31 provided in the present application includes a bracket body 311 , and a first mounting hole 312 and a second mounting hole 313 are formed on the bracket body 311 .
[0062] The first mounting hole 312 is disposed at one end of the bracket body 311 . The axial direction of the first mounting hole 312 is parallel to the sliding direction of the bracket body 311 . The first mounting hole 312 is used to mount the elastic member 33 of the moving contact assembly 3 .
[0063] The second mounting hole 313 is arranged along the circumference of the first mounting hole 312 and communicates with the first mounting hole 312. The first opening dimension 313A of the second mounting hole 313 is larger than the second opening dimension 313B, the measuring direction of the first opening dimension 313A is parallel to the sliding direction of the bracket body 311, and the measuring direction of the second opening dimension 313B is along the circumference of the bracket body 311. The second mounting hole 313 is used to connect the connecting rod 5 and the elastic member 33 in the isolating switch.
[0064] Based on the same inventive concept, the present application also provides a disconnector using the above-mentioned moving contact bracket. Figure 4 FIG. 1 is a schematic diagram of the structure of an isolating switch in an open state provided by an embodiment of the present application. Figure 5FIG. 1 is a schematic diagram of the structure of an isolating switch in a closed state provided in an embodiment of the present application. Figure 6 Shown Figure 4 , Figure 5 Schematic diagram of the structure of the moving contact assembly.
[0065] Please refer to Figure 4 , Figure 5 and Figure 6 The isolating switch provided in the present application comprises a housing 1, a rotating member 2, a moving contact assembly 3, a stationary contact 4 and a connecting rod 5. The rotating member 2 is rotatably connected to the housing 1. The moving contact assembly 3 comprises a moving contact bracket 31, a moving contact 32 and an elastic member 33.
[0066] The moving contact support 31 includes a support body 311, which is slidably connected to the housing 1. The support body 311 is provided with a first mounting hole 312 and a second mounting hole 313. The axial direction of the first mounting hole 312 is parallel to the sliding direction of the support body 311. The second mounting hole 313 is arranged along the circumference of the first mounting hole 312 and is connected to the first mounting hole 312. The first opening size 313A of the second mounting hole 313 is larger than the second opening size 313B, the measuring direction of the first opening size 313A is parallel to the sliding direction of the support body 311, and the measuring direction of the second opening size 313B is along the circumference of the support body 311.
[0067] The elastic member 33 is disposed through the first mounting hole 312. The moving contact 32 is linked with the bracket body 311. The stationary contact 4 is disposed at one end of the bracket body 311 away from the rotating member 2, and is opposite to the moving contact 32.
[0068] The connecting rod 5 includes a first end and a second end. The first end is hinged to the rotating member 2, and the second end is inserted into the second mounting hole 313 and contacts the elastic member 33. The connecting rod 5 can compress the elastic member 33 to make the moving contact 32 contact with the static contact 4 and maintain the contact force.
[0069] For more details, please refer to Figure 4 and Figure 5 The working principle of the isolating switch provided in the present application is: the forward and reverse rotational motion of the rotating member 2 is converted into the reciprocating linear sliding of the moving contact assembly 3 through the connecting rod 5, so that the contact and separation of the moving contact 32 and the stationary contact 4 can be achieved.
[0070] One of the innovations of the present application is that the structural composition of the moving contact assembly 3 is simplified by changing the structure of the moving contact bracket 31, and the specific connection structure between the connecting rod 5 and the moving contact assembly 3 in the disconnector is also changed.
[0071] Specifically, please combine Figure 2 , Figure 4 and Figure 5The movable contact bracket 31 of the present application includes a first mounting hole 312 and a second mounting hole 313. The first opening size 313A of the second mounting hole 313 is larger than the second opening size 313B. The connecting rod 5 of the present application contacts the elastic member 33 in the first mounting hole 312 through the second mounting hole 313 on the bracket body 311. In this way, the following functions can be generated:
[0072] First aspect: when the disconnector is closed, the rotating member 2 rotates clockwise to drive the connecting rod 5. The second end of the connecting rod 5 applies pressure to the elastic member 33. The elastic member 33 transfers the pressure to the bracket body 311 or the moving contact 32. The bracket body 311 moves downward together with the moving contact 32, and the moving contact 32 comes into contact with the static contact.
[0073] The rotating member 2 continues to rotate and the bracket body 311 no longer moves. At this time, since the first opening size 313A of the second mounting hole 313 is larger than the second opening size 313B, the special shape of the second mounting hole 313 provides space for the further movement of the connecting rod 5, so that the connecting rod 5 can continue to move downward relative to the bracket body 311, thereby continuing to compress the elastic member 33, so that the elastic member 33 applies greater pressure to the moving contact 32, thereby improving the contact reliability between the moving contact 32 and the static contact 4.
[0074] Second aspect: When the isolating switch is opened, the rotating part 2 rotates counterclockwise to drive the connecting rod 5 to move upward, and the elastic part 33 in the first mounting hole 312 gradually recovers its deformation. Since the second end of the connecting rod 5 is plugged into the second mounting hole 313 of the bracket body 311, the connecting rod 5 will drive the bracket to move upward, and the moving contact 32 is separated from the static contact 4.
[0075] Please Figure 6 The moving contact assembly 3 shown is Figure 1 Compared with the movable contact assembly 3′ in the isolating switch of the present application, the movable contact assembly 3 only includes the movable contact bracket 31, the movable contact 32 and the elastic member 33. In the prior art, the movable contact assembly 3′ not only includes the movable contact bracket 31′, the movable contact 32′, the first elastic member 33′, but also includes the connecting block 34′ and the second elastic member 35′. Thus, compared with the movable contact assembly 3′ provided in the prior art, the movable contact assembly 3 provided in the present application saves the connecting block 34′ and the second elastic member 35′ while achieving the same function, and has a simpler structure, more convenient assembly, and saves costs.
[0076] Based on the above description, the present application provides a moving contact bracket 31, which helps to simplify the component structure of the moving contact assembly 3. When in use, the connecting rod 5 can be directly connected to the elastic member 33 through the moving contact bracket 31. In this way, compared with the prior art, the component structure of the moving contact assembly 3 is reduced, and it has the characteristics of convenient assembly and cost saving.
[0077] Based on the above description, the present application further provides an isolating switch, which adopts the moving contact bracket 31 provided in the present application. Compared with the existing isolating switches, the structure is more streamlined and the assembly is simpler.
[0078] It should be noted that the rotating member 2 mentioned in the present application can be operated manually or driven by an electric mechanism.
[0079] It should also be noted that the housing 1 mentioned in the present application may include a first half housing 11 and a second half housing that can be interlocked. The rotating member 2 is rotatably connected to the first half housing 11 or the second half housing, and the rotating member 2 includes an operating portion 21 and a driving portion 22, wherein the operating portion 21 is located outside the housing 1 for manual or electric operation, and the driving portion 22 is located inside the housing 1 and connected to the connecting rod 5. The connecting rod 5, the moving contact assembly 3, and the stationary contact 4 are all located inside the housing 1, and at least one of the first half housing 11 or the second half housing may also be provided with a slideway 111 for guiding the sliding of the moving contact bracket 31.
[0080] It should also be noted that, in the present application, the housing 1, the rotating member 2, the connecting rod 5, and the moving contact assembly 3 are interconnected to form a connecting rod mechanism. When the disconnector is closed, the rotating member 2 drives the moving contact assembly 3 through the connecting rod 5. After passing the dead point of the four-bar mechanism, the moving contact 32 contacts the stationary contact 4. In this way, the contact between the moving contact 32 and the stationary contact 4 is relatively stable.
[0081] Please combine Figure 2 and Figure 6 In one embodiment of the present application, a third mounting hole 314 is further provided on the bracket body 311. The third mounting hole 314 is provided in the extension direction of the first mounting hole 312. The third mounting hole 314 intersects with the first mounting hole 312. The third mounting hole 314 is used to install the moving contact 32 of the isolating switch.
[0082] Based on the moving contact bracket 31 provided in this embodiment, when using the moving contact bracket 31 to assemble the moving contact assembly 3, the moving contact 32 can be first assembled through the third mounting hole 314, and then the elastic member 33 can be installed into the first mounting hole 312. At this time, the moving contact 32 first assembled with the moving contact bracket 31 provides axial positioning for the elastic member 33.
[0083] Please continue to combine Figure 2 , Figure 4 and Figure 5 Based on the moving contact bracket 31 provided in this embodiment, when the isolating switch using the moving contact bracket 31 is closed, the connecting rod 5 presses the elastic member 33, the elastic member 33 presses the moving contact 32, and the moving contact 32 moves toward the static contact 4 together with the moving contact bracket 31.
[0084] In other embodiments of the present application, the axial positioning of the elastic member 33 may also be achieved in other ways, for example, by providing an axial positioning portion in the first mounting hole 312. Then, when the isolating switch using the moving contact bracket 31 is closed, the connecting rod 5 presses the elastic member 33, the elastic member 33 presses the moving contact bracket 31, and the moving contact bracket 31 moves toward the stationary contact 4 together with the moving contact 32.
[0085] It can be seen from the above that, based on the moving contact bracket 31 provided in this embodiment, a third mounting hole 314 intersecting the first mounting hole 312 is arranged in the extension direction of the first mounting hole 312, and the third mounting hole 314 is used to install the moving contact 32. In this way, when the moving contact assembly 3 is assembled, the moving contact 32 can provide axial positioning for the elastic member 33. In this way, it is convenient to assemble the moving contact assembly 3 and also convenient to simplify the structure of the moving contact bracket 31 itself.
[0086] Please continue to refer to Figure 2 , Figure 4 and Figure 6 In some embodiments of the present application, the third mounting hole 314 includes a main body hole 3141 , and the main body hole 3141 is used for interference fit with the moving contact plate 321 of the moving contact 32 .
[0087] Specifically, if Figure 6 As shown, the moving contact 32 of the isolating switch generally includes a moving contact plate 321 and a moving contact point 322 fixed at a position close to the end of the moving contact plate 321 .
[0088] When the moving contact 32 is installed with the moving contact bracket 31 , the moving contact plate 321 is interference fit with the main body hole 3141 , and the moving contact point 322 is located outside the main body hole 3141 for contacting and separating with the stationary contact 4 .
[0089] In some embodiments of the present application, the main body hole 3141 and the moving touch plate 321 are interference fit, so that the relative position of the moving touch plate 321 and the moving contact bracket 31 is fixed, and the moving touch plate 321 will not move relative to the moving contact bracket 31. In this way, the position stability of the moving contact 322 can be ensured, and the position deviation of the moving contact 322 can be avoided, thereby improving the contact stability between the moving contact 322 and the static contact 4.
[0090] Please combine Figure 2 , Figure 4 and Figure 6 In some embodiments of the present application, the third mounting hole 314 also includes a through hole 3142 .
[0091] In the extension direction of the first mounting hole 312 , the through hole 3142 is located on one side or both sides of the main body hole 3141 and is communicated with the main body hole 3141 . The through hole 3142 can allow the moving contact point 322 of the moving contact 32 to pass through.
[0092] For more details, please refer to Figure 6 ,like Figure 6 As shown, in some implementations of the present application, the moving contact 32 includes a moving contact plate 321 and a moving contact point 322 fixed to the moving contact plate 321 near the end thereof. The moving contact point 322 and the moving contact plate 321 are fixed by riveting, welding, and the like.
[0093] When the movable contact point 322 is riveted to the movable contact plate 321 , there will be protrusions on both sides of the movable contact plate 321 at the riveted joint. At this time, the via holes 3142 are located on both sides of the main body hole 3141 .
[0094] When the moving contact 322 is welded to the moving touch plate 321 , the moving contact 322 is located at one side of the moving touch plate 321 . At this time, the via hole 3142 may be located at a side of the main body hole 3141 away from the first mounting hole 312 .
[0095] In some embodiments of the present application, the third mounting hole 314 includes a through hole 3142, and the through hole 3142 can allow the moving contact 322 of the moving contact 32 to pass through, so that before the moving contact 32 is assembled with the moving contact bracket 31, the moving contact 322 and the moving contact plate 321 can be fixed by riveting, welding, etc., and then the complete moving contact 32 is assembled with the moving contact bracket 31. In this way, the assembly efficiency of the moving contact 32 and the moving contact bracket 31 can be improved, and the assembly of the moving contact 32 itself is more convenient. In addition, the through hole 3142 also helps to dissipate heat of the isolating switch.
[0096] In some embodiments of the present application, the size of the via hole 3142 can be set larger, so that it is not only convenient for the moving contact 322 to pass through, but also when the isolating switch is working, the via hole 3142 can play a good role in heat dissipation, thereby preventing the moving contact bracket 31 (generally a plastic part) from overheating and deformation.
[0097] Figure 7 for Figure 6 The top view of Figure 8 for Figure 7 For the AA cross-section diagram, please refer to Figure 8 In some embodiments of the present application, the elastic member 33 is a cylindrical spring.
[0098] Specifically, please combine Figure 4 and Figure 8In the present application, the main function of the elastic member 33 is to smoothly realize the contact and separation of the moving contact 32 and the stationary contact 4, and to provide a higher contact pressure when the moving contact 32 contacts the stationary contact 4, so that the contact between the moving contact 32 and the stationary contact 4 is more reliable.
[0099] In some embodiments of the present application, a cylindrical spring is selected as the elastic member 33. The cylindrical spring itself has a relatively symmetrical structure. When the connecting rod 5 acts on the moving contact 32 through the cylindrical spring, the cylindrical spring has a lighter force offset phenomenon than an asymmetric structure such as a spring clip, which is beneficial to maintaining reliable contact between the moving contact 32 and the static contact 4.
[0100] Please combine Figure 2 and Figure 8 In some embodiments of the present application, the first mounting hole 312 is a cylindrical hole or a square hole.
[0101] Specifically, please combine Figure 2 , Figure 4 and Figure 8 When the disconnector is opened and closed, it is accompanied by the transition between rotary motion and linear motion. Due to the difference in the directions of rotary motion and linear motion, the force applied by the connecting rod 5 to the elastic member 33 has a certain angle with the movement direction of the moving contact bracket 31.
[0102] In some embodiments of the present application, when the first mounting hole 312 is set as a cylindrical hole or a square hole, the elastic member 33 and the first mounting hole 312 are clearance-matched. In this way, the first mounting hole 312 can play a good guiding role in the movement of the elastic member 33, reduce the force deviation phenomenon of the elastic member 33 during the compression process, and the force on the moving contact 32 is more uniform and stable, and the contact between the moving contact 32 and the static contact 4 is more reliable.
[0103] Please continue to refer to Figure 2 , Figure 4 and Figure 5 In some embodiments of the present application, the second mounting hole 313 is a waist-shaped hole.
[0104] For more information, see Figure 4 , for the convenience of description and understanding, Figure 4 In terms of the current status, Figure 4 The isolating switch shown is in the open state, at which the second end of the connecting rod 5 is located near the upper part of the second mounting hole 313 .
[0105] Please refer to Figure 5 ,by Figure 5 In terms of the current status, Figure 5 The isolating switch shown is in a closed state, at which the second end of the connecting rod 5 is located near the bottom of the second mounting hole 313 .
[0106] comprehensive Figure 4 and Figure 5 It can be seen that the connecting rod 5 needs to generate relative displacement relative to the second mounting hole 313 during the opening and closing process of the isolating switch.
[0107] In some embodiments of the present application, the second mounting hole 313 is shaped as a waist-shaped hole, which can satisfy the condition that the first opening size 313A is larger than the second size, thereby satisfying the displacement requirement of the connecting rod 5 during operation.
[0108] In addition, in the present application, the first end of the connecting rod 5 is hinged to the rotating member 2, and the second end of the connecting rod 5 is plugged into the second mounting hole 313. The cross section of the connecting rod 5 is generally circular.
[0109] The present application sets the second mounting hole 313 as a waist-shaped hole. The shape of the waist-shaped hole is more compatible with the shape of the connecting rod 5, which can improve the matching degree between the two, and the production and processing of the waist-shaped hole is also relatively convenient.
[0110] Therefore, based on the moving contact bracket 31 provided in this embodiment, the second mounting hole 313 is a waist-shaped hole, so that the moving contact bracket 31 can better cooperate with the connecting rod 5 to meet the displacement requirements of the connecting rod 5 when the disconnector is closed or opened, and the matching degree between the connecting rod 5 and the moving contact bracket 31 is better, and processing and manufacturing is also more convenient.
[0111] Fig. 9 for Figure 2 The structure diagram of the moving contact bracket shown in another perspective. Please refer to Figure 2 , Figure 4 and Fig. 9 In some embodiments of the present application, the bracket body 311 is also provided with a convex arc surface to facilitate the sliding of the bracket body 311.
[0112] Specifically, during the closing and opening process of the isolating switch, the bracket body 311 moves linearly relative to the shell 1. In order to cooperate with the linear movement of the bracket body 311, the matching part of the shell 1 and the bracket body 311 is a plane, and the bracket body 311 is provided with a convex arc surface for facilitating the sliding of the bracket body 311. In this way, the matching part of the bracket body 311 and the shell 1 is in line contact. This matching structure can not only reduce the wear of the bracket body 311 during the sliding process, but also make it less likely for the bracket body 311 and the shell 1 to get stuck.
[0113] Please continue to refer to Figure 2 , Figure 4 and Fig. 9In some embodiments of the present application, the shell 1 includes a first half shell 11 and a second half shell that are interlocked with each other, and the bracket body 311 is clamped between the first half shell 11 and the second half shell. Then, a first convex arc surface 311A can be set on the side of the bracket body 311 facing the first half shell 11, and a second convex arc surface 311B can be set on the side of the bracket body 311 facing the second half shell.
[0114] Please continue to refer to Figure 2 , Figure 4 and Fig. 9 In some embodiments of the present application, a slideway 111 is provided on at least one of the first half shell 11 or the second half shell to guide the bracket body 311 to move in a straight line. Then, a third convex arc surface 311C and a fourth convex arc surface 311D are provided at the matching position between the bracket body 311 and the slideways 111 on both sides.
[0115] Fig.10 A schematic structural diagram of an isolating switch provided in an embodiment of the present application when a torsion spring is in a maximum compression state during a closing process.
[0116] Please continue to refer to Figure 4 , Figure 5 and Fig.10 In some embodiments of the present application, the isolating switch further includes a torsion spring 6, one end of which is connected to the housing 1, and the other end of the torsion spring 6 is connected to the rotating member 2, for accelerating the closing and opening of the isolating switch.
[0117] Specifically, in the disconnector provided in this embodiment, the torsion spring 6 is in an energy storage stage in the early stage of closing and in a state of releasing stored energy in the late stage of closing through the cooperation of the rotating member 2, the torsion spring 6, the connecting rod 5 and the housing 1, thereby accelerating the closing process. In the opening process, in the early stage of opening, the torsion spring 6 is in an energy storage stage, and in the late stage of opening, the torsion spring 6 is in a state of releasing stored energy, thereby accelerating the opening process.
[0118] Specifically, the end of the torsion spring 6 connected to the rotating member 2 is end A, and the end of the torsion spring 6 connected to the housing 1 is end B. Figure 4 and Fig. 9 In one embodiment of the present application, during the closing process of the isolating switch, the rotating member 2 rotates clockwise, and the torsion spring 6 rotates clockwise around its axis under the drive of the rotating member 2, and the A end and the B end gradually approach each other, and the torsion spring 6 is deformed and stores mechanical energy. When the direction of the force applied by the rotating member 2 to the torsion spring 6 is perpendicular to the torsion spring, this state is the balance point of the torsion spring, at which time the distance between the A end and the B end is the shortest, and the torsion spring 6 is in the maximum compression state. As the rotating member 2 continues to rotate, the torsion spring 6 rotates counterclockwise around its axis under the drive of the rotating member 2, and the torsion spring 6 releases the stored energy, accelerating the clockwise rotation of the rotating member 2, and prompting the isolating switch to close quickly.
[0119] Similarly, during the disconnect switch opening process, the rotating member 2 rotates counterclockwise, and the torsion spring 6 rotates clockwise around its axis driven by the rotating member 2, and the A end and the B end gradually approach each other, and the torsion spring 6 is deformed and stores mechanical energy. When the direction of the force applied by the rotating member 2 to the torsion spring 6 is perpendicular to the torsion spring, this state is the balance point of the torsion spring 6, at which time the distance between the A end and the B end is the shortest, and the torsion spring 6 is in the maximum compression state. As the rotating member 2 continues to rotate, the torsion spring 6 rotates counterclockwise around its axis driven by the rotating member 2, and the torsion spring 6 releases the stored energy, accelerating the counterclockwise rotation of the rotating member 2, and prompting the disconnect switch to open quickly.
[0120] It can be seen from the above that, based on the isolating switch provided in this embodiment, by providing a torsion spring, the closing and opening processes of the isolating switch can be accelerated.
[0121] In addition, it should be noted that in the description of the present application, the directions indicated by the terms "counterclockwise", "clockwise", etc. are directions based on the specific embodiments, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the isolating switch protected by the present application can only be opened when the rotating part 2 rotates counterclockwise, and can only be closed when the rotating part 2 rotates clockwise.
[0122] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.
[0123] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application is described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A moving contact bracket, characterized in that: It comprises a bracket body, and the bracket body is provided with a first mounting hole and a second mounting hole; The first mounting hole is provided at one end of the bracket body, the axial direction of the first mounting hole is parallel to the sliding direction of the bracket body, and the first mounting hole is used to mount the elastic member of the moving contact assembly; The second mounting hole is arranged along the circumference of the first mounting hole and is connected to the first mounting hole; the first opening size of the second mounting hole is larger than the second opening size, the measuring direction of the first opening size is parallel to the sliding direction of the bracket body, and the measuring direction of the second opening size is along the circumference of the bracket body; the second mounting hole is used to connect the connecting rod in the isolating switch and the elastic member.
2. The moving contact support according to claim 1, characterized in that: The bracket body is also provided with a third mounting hole, the third mounting hole is arranged in the extension direction of the first mounting hole, the third mounting hole intersects with the first mounting hole, and the third mounting hole is used to install the moving contact of the isolating switch.
3. The moving contact support according to claim 2, characterized in that: The third mounting hole comprises a main body hole, and the main body hole is used for interference fit with the moving contact plate of the moving contact.
4. The moving contact support according to claim 3, characterized in that: The third mounting hole also includes a via hole; In the extension direction of the first mounting hole, the through hole is located on one side or both sides of the main body hole and is communicated with the main body hole. The through hole can allow the moving contact point of the moving contact to pass through.
5. The moving contact support according to any one of claims 1 to 4, characterized in that: The first mounting hole is a cylindrical hole or a square hole.
6. The moving contact support according to any one of claims 1 to 4, characterized in that: The second mounting hole is a waist-shaped hole.
7. The moving contact support according to any one of claims 1 to 4, characterized in that: The bracket body is also provided with a convex arc surface on its circumference to facilitate the sliding of the bracket body.
8. An isolating switch, characterized in that: It includes a housing, a rotating part, a moving contact assembly, a stationary contact and a connecting rod; The rotating member is rotatably connected to the housing; The moving contact assembly comprises a moving contact bracket, a moving contact and an elastic member; The contact bracket is a moving contact bracket as claimed in any one of claims 1 to 7; The elastic member is arranged through the first mounting hole; the moving contact is linked with the bracket body; The stationary contact is arranged at one end of the bracket body away from the rotating member and opposite to the moving contact; The connecting rod includes a first end and a second end, the first end is hinged to the rotating member, and the second end is inserted into the second mounting hole and abuts against the elastic member. The connecting rod can make the moving contact contact with the static contact and maintain the contact force by compressing the elastic member.
9. The isolating switch according to claim 8, characterized in that: The elastic member is a cylindrical spring.
10. The isolating switch according to claim 8 or 9, characterized in that: It also includes a torsion spring, one end of which is connected to the housing, and the other end of which is connected to the rotating member, for accelerating the closing and opening of the isolating switch.