An additional pole mechanism for a disconnector

Abstract

The utility model relates to an additional pole mechanism of isolating switch, its characterized in that, including shell and the contact support group, wiring terminal and static contact bridge of setting in the shell, the contact support group includes contact support, movable contact bridge and spring, the contact support sliding assembly is in the shell, the movable contact bridge is installed on the contact support, and the spring is equipped between movable contact bridge and contact support, the wiring terminal is equipped with two and respectively located contact support both sides, and the static contact bridge that is equipped with on two wiring terminals, static contact bridge and movable contact bridge are opposite and set up, and the contact support sliding shift can drive movable contact bridge and static contact bridge contact or separate. Adopt the above technical scheme, the utility model provides an additional pole mechanism of isolating switch, and through additional pole mechanism access zero line, realize the access of three -phase four -wire line, and can guarantee in the operation process, zero line and other three -phase circuit can effectively isolate, prevent the security problem caused by misoperation or electrical fault.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, and in particular to an additional pole mechanism for a disconnecting switch. Background Technology

[0002] Disconnecting switches, especially three-phase disconnecting switches, use a knob to control disconnection. When such disconnecting switches are connected to a three-phase four-wire circuit, they cannot be connected to the line. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art by providing an additional pole mechanism for a disconnecting switch. By connecting the neutral wire through the additional pole mechanism, a three-phase four-wire circuit can be connected. It can also ensure that the neutral wire can be effectively isolated from other three-phase circuits during operation, preventing safety problems caused by misoperation or electrical faults.

[0004] The technical solution of this utility model is as follows: An auxiliary pole mechanism for a disconnecting switch includes a housing and a contact support group, terminals, and a stationary contact bridge disposed within the housing. The contact support group includes a contact support, a moving contact bridge, and a spring. The contact support is slidably mounted within the housing. The moving contact bridge is mounted on the contact support. A spring is provided between the moving contact bridge and the contact support. Two terminals are provided, located on both sides of the contact support. Each terminal is provided with a stationary contact bridge. The stationary contact bridge and the moving contact bridge are arranged opposite to each other. Sliding of the contact support can drive the moving contact bridge to contact or separate from the stationary contact bridge.

[0005] Using the above technical solution, the additional pole is used to connect the neutral wire, realizing the connection of three-phase four-wire. During operation, the neutral wire can be effectively isolated from other three-phase circuits to prevent safety problems caused by misoperation or electrical faults.

[0006] A further feature of this invention is that the contact support includes a separately configured contact support base and a contact support cover, with an installation space formed between the contact support base and the contact support cover. The movable contact bridge is located within the installation space, and openings for the movable contact bridge to extend are provided on both sides of the installation space. The two ends of the spring abut against the middle of the movable contact bridge and the bottom wall of the installation space, respectively.

[0007] With the above-mentioned further design, the split design facilitates the installation of the moving contact bridge and the spring, and makes the moving contact bridge structure stable and provides good contact with the stationary contact bridge.

[0008] A further feature of this invention is that the contact support is provided with a connecting arm, and one side of the housing is provided with a through groove. The connecting arm extends out of the housing from the through groove and is used for transmission connection with the drive mechanism of the disconnecting switch.

[0009] With the above-mentioned further configuration, the end of the connecting arm is provided with a chamfer to facilitate embedding into the disconnecting switch. The contacts support linkage with the disconnecting switch drive mechanism, and during the linkage process, the moving contact bridge is driven to synchronously close or open with the disconnecting switch body.

[0010] A further feature of this invention is that the contact support is provided with a positioning boss, and the moving contact bridge is provided with a recessed groove. The positioning boss and the recessed groove cooperate to restrict the left and right sliding of the moving contact bridge.

[0011] By further modifying the above settings, the sliding of the moving contact bridge on the X-axis is restricted, thus preventing the contact between the moving and stationary contact bridges from becoming misaligned and the contact point from becoming unstable.

[0012] A further feature of this invention is that the contact support cover has a connection hole and the contact support base has a connection groove, with the connection hole and the connection groove corresponding to each other for the insertion of an external auxiliary contact.

[0013] The above-mentioned further configuration facilitates the connection between the auxiliary contact and the additional pole mechanism for linkage. When the disconnecting switch mechanism moves, the additional pole mechanism can drive the auxiliary contact to perform closing or opening operations.

[0014] A further feature of this invention is that the outer casing is provided with a sliding groove, the contact is slidably disposed in the sliding groove, the through groove is opened on the sliding groove, and the surface of the sliding groove is mirror-finished.

[0015] With the above-mentioned further design, the guide slide makes the contact support sliding more stable, reducing the risk of the contact support deflection during movement. The slide groove is mirror-shaped, reducing the friction between the contact support and the housing.

[0016] A further feature of this invention is that the contact support base is provided with an insertion hole, and the contact support cover is provided with an insertion post, which is inserted into the insertion hole and fixed by screws.

[0017] The above-mentioned further design results in a simple structure, convenient installation, and a robust structure after the contact support cover and contact support base are assembled together.

[0018] A further feature of this invention is that the other side of the outer shell is provided with a long groove and a fracture structure located in the long groove. The left and right sides of the fracture structure are integrally formed with the sidewall of the long groove, and the upper and lower ends of the fracture structure are separated from the sidewall of the long groove. Under the action of external force, the fracture structure can detach from the long groove to conduct the connection between the inside and outside of the outer shell.

[0019] With the above-mentioned further configuration, when it is necessary to connect an external auxiliary contact, the broken structure can be knocked off with a tool, and the external auxiliary contact can be inserted into the contact support from the long slot. When the main body of the disconnecting switch moves, it can drive the auxiliary contact to move. This structure can reduce product assembly steps, save costs, and the auxiliary contact is convenient and quick to install.

[0020] A further improvement of this invention is that the left and right sides of the fracture structure are V-shaped.

[0021] By adopting the above-mentioned further design, the connection surface between the fractured structure and the sidewall of the long groove is reduced, making it easier and faster to remove the fractured structure from the long groove. Attached Figure Description

[0022] Figure 1 This is an exploded view of a specific embodiment of the present utility model; Figure 2 This is an exploded view of the contact support assembly according to a specific embodiment of the present invention; Figure 3 This is an exploded view of the contact support base according to a specific embodiment of the present utility model; Figure 4 This is a side view of the contact support base according to a specific embodiment of the present utility model; Figure 5 This is a schematic diagram of the moving contact bridge in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the fracture structure installed in a long groove according to a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the long groove after the fracture structure of this utility model is fractured, according to a specific embodiment.

[0023] In the diagram, 1. Outer shell; 11. Through groove; 12. Long groove; 13. Fracture structure; 14. Sliding groove; 2. Contact support group; 21. Contact support; 211. Contact support base; 2111. Insertion hole; 2112. Connection groove; 212. Contact support cover; 2121. Insert post; 2122. Connection hole; 213. Screw; 214. Connection arm; 215. Positioning boss; 22. Moving contact bridge; 221. Recessed groove; 23. Spring; 3. Terminal block; 4. Stationary contact bridge. Detailed Implementation

[0024] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that all directional indicators (such as up, down, forward, backward, etc.) in the description of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] like Figure 1-7 As shown, an additional pole mechanism for a disconnecting switch includes a housing 1 and a contact support group 2, a terminal block 3, and a stationary contact bridge 4 disposed within the housing 1. The contact support group 2 includes a contact support 21, a moving contact bridge 22, and a spring 23. Both the moving contact bridge 22 and the stationary contact bridge 4 are provided with contacts. The contact support 21 is slidably mounted within the housing 1, and the moving contact bridge 22 is mounted on the contact support 21. A spring 23 is provided between the moving contact bridge 22 and the contact support 21. Two terminal blocks 3 are provided, located on both sides of the contact support 21. Both terminal blocks 3 are provided with the stationary contact bridge 4, which is disposed opposite to the moving contact bridge 22. The sliding of the contact support 21 can drive the moving contact bridge 22 to contact or separate from the stationary contact bridge 4. The additional pole is used to connect the neutral wire, realizing the connection of three-phase four-wire circuit. The neutral wire is connected to the terminal block 3, and during operation, the neutral wire can be effectively isolated from other three-phase circuits to prevent safety problems caused by misoperation or electrical faults. The contact support 21 is provided with a positioning boss 215, and the moving contact bridge 22 is provided with a recessed groove 221. The positioning boss 215 and the recessed groove 221 cooperate to restrict the left and right sliding of the moving contact bridge 22, restrict the moving contact bridge 22 to slide left and right on the X-axis, and avoid the moving contact bridge 22 and the stationary contact bridge 4 from being misaligned and the contact point from being unstable.

[0029] The contact support 21 includes a separate contact support base 211 and a contact support cover 212, forming an installation space between them. The moving contact bridge 22 is located within this installation space, and openings for the moving contact bridge 22 to extend are provided on both sides of the installation space. The two ends of the spring 23 abut against the middle of the moving contact bridge 22 and the bottom wall of the installation space, respectively. The separate design facilitates the installation of the moving contact bridge 22 and the spring 23, and ensures the structural stability of the moving contact bridge 22 and the connection between it and the stationary contact bridge 4. The contact is good; specifically, the connection between the contact support cover 212 and the contact support base 211 can be a snap-fit ​​connection, a plug-in connection, or a screw connection 213, etc. The contact support base 211 is provided with a socket 2111, and the contact support cover 212 is provided with a post 2121. The post 2121 is inserted into the socket 2111 and fixed by screws 213. The structure is simple and easy to install, and the structure is firm after the contact support cover 212 and the contact support base 211 are assembled together.

[0030] The contact support 21 is provided with a connecting arm 214, and a through groove 11 is provided on one side of the housing 1. The connecting arm 214 extends out of the housing 1 from the through groove 11 and is used for transmission connection with the drive mechanism of the disconnecting switch. The end of the connecting arm 214 is provided with a chamfer to facilitate embedding into the disconnecting switch. The contact support 21 is linked with the drive mechanism of the disconnecting switch. During the linkage process, the moving contact bridge 22 is driven to synchronously close or open with the body of the disconnecting switch.

[0031] The contact support cover 212 is provided with a connection hole 2122, and the contact support base 211 is provided with a connection groove 2112. The connection hole 2122 and the connection groove 2112 are correspondingly arranged to allow the insertion of an external auxiliary contact, which facilitates the connection between the auxiliary contact and the auxiliary pole mechanism for linkage. When the disconnecting switch mechanism moves, the auxiliary pole mechanism can drive the auxiliary contact to perform closing or opening operations. The other side of the outer shell 1 is provided with a long groove 12 and a fracture structure 13 located in the long groove 12. The left and right sides of the fracture structure 13 are integrally formed with the sidewall of the long groove 12, and the upper and lower ends of the fracture structure 13 are separated from the sidewall of the long groove 12. Under the action of external force, the fracture structure 13 can detach from the long groove 12, thereby connecting the inside and outside of the outer shell 1. When it is necessary to connect the external auxiliary contact, the fracture structure 13 can be knocked off with a tool, and the external auxiliary contact can be inserted into the contact support 21 from the long groove 12. When the main body of the disconnecting switch moves, it can drive the auxiliary contact to move. This structure can reduce the product assembly process, save costs, and the auxiliary contact is convenient and quick to install. Specifically, the left and right sides of the fracture structure 13 are set in a V shape, which reduces the connection surface between the fracture structure 13 and the side wall of the long groove 12, making it easy and quick to remove the fracture structure 13 from the long groove 12.

[0032] The housing 1 is provided with a sliding groove 14, and the contact support 21 is slidably disposed in the sliding groove 14. The through groove 11 is opened on the sliding groove 14. The surface of the sliding groove 14 is mirror-finished. The guiding sliding makes the sliding of the contact support 21 more stable and reduces the risk of the contact support 21 deflecting during movement. The mirror-finished sliding groove 14 reduces the friction between the contact support 21 and the housing 1.

Claims

1. An auxiliary pole mechanism for a disconnecting switch, characterized in that, The device includes a housing (1) and a contact support group (2), a terminal block (3) and a stationary contact bridge (4) disposed within the housing (1). The contact support group (2) includes a contact support (21), a moving contact bridge (22) and a spring (23). The contact support (21) is slidably mounted within the housing (1). The moving contact bridge (22) is mounted on the contact support (21). A spring (23) is provided between the moving contact bridge (22) and the contact support (21). There are two terminals (3) located on both sides of the contact support (21). The stationary contact bridge (4) is provided on both terminals (3). The stationary contact bridge (4) is disposed opposite to the moving contact bridge (22). The sliding of the contact support (21) can drive the moving contact bridge (22) to contact or separate from the stationary contact bridge (4).

2. The additional pole mechanism of the disconnecting switch according to claim 1, characterized in that, The contact support (21) includes a separate contact support seat (211) and a contact support cover (212), forming an installation space between the contact support seat (211) and the contact support cover (212). The movable contact bridge (22) is located in the installation space, and openings for the movable contact bridge (22) to extend are provided on both sides of the installation space. The two ends of the spring (23) abut against the middle of the movable contact bridge (22) and the bottom wall of the installation space, respectively.

3. The additional pole mechanism of the disconnecting switch according to claim 1 or 2, characterized in that, The contact support (21) is provided with a connecting arm (214), and a through groove (11) is provided on one side of the housing (1). The connecting arm (214) extends out of the housing (1) from the through groove (11) and is used for transmission connection with the drive mechanism of the disconnecting switch.

4. The additional pole mechanism of the disconnecting switch according to claim 1 or 2, characterized in that, The contact support (21) is provided with a positioning boss (215), and the moving contact bridge (22) is provided with a recessed groove (221). The positioning boss (215) and the recessed groove (221) cooperate to restrict the left and right sliding of the moving contact bridge (22).

5. The additional pole mechanism of the disconnecting switch according to claim 2, characterized in that, The contact support cover (212) is provided with a connection hole (2122), and the contact support base (211) is provided with a connection groove (2112). The connection hole (2122) and the connection groove (2112) are provided in correspondence for the insertion of external auxiliary contacts.

6. The additional pole mechanism of the disconnecting switch according to claim 3, characterized in that, The outer casing (1) is provided with a sliding groove (14), the contact support (21) is slidably disposed in the sliding groove (14), the through groove (11) is opened on the sliding groove (14), and the surface of the sliding groove (14) is mirror-finished.

7. The additional pole mechanism of the disconnecting switch according to claim 2, characterized in that, The contact support base (211) is provided with a socket (2111), and the contact support cover (212) is provided with a post (2121). The post (2121) is inserted into the socket (2111) and fixed by a screw (213).

8. The additional pole mechanism of the disconnecting switch according to claim 3, characterized in that, The outer shell (1) has a long groove (12) and a fracture structure (13) located in the long groove (12) on the other side. The left and right sides of the fracture structure (13) are integrally formed with the side wall of the long groove (12). The upper and lower ends of the fracture structure (13) are separated from the side wall of the long groove (12). Under the action of external force, the fracture structure (13) can detach from the long groove (12) to conduct the connection between the inside and outside of the outer shell (1).

9. The additional pole mechanism of the disconnecting switch according to claim 8, characterized in that, The fracture structure (13) is arranged in a V-shape on both the left and right sides.

Images