Locking structure of isolation type change-over switch

Abstract

The utility model relates to the technical field of change-over switches, and discloses a locking structure of an isolation type change-over switch, which comprises a shell, an operating handle arranged on the shell, and an arc groove arranged on the operating handle; a moving contact assembly, wherein a connecting rod is fixedly arranged on the moving contact assembly; wherein the arc groove is connected with the connecting rod in a sliding mode, and a locking groove is fixedly formed in the arc groove. According to the locking structure of the isolation type change-over switch, the handle rotates, the sliding connecting rod slides to the locking groove on the arc groove along the arc groove, the connecting rod clamped into the locking groove locks the positions of the two moving contacts, the moving contacts are prevented from being loosened easily, when the moving contacts are communicated with the static contacts, the moving contacts are pressed tightly in an auxiliary mode, and the static contacts are prevented from being loosened. When the switch is switched on, the contact between the static contact and the moving contact is more stable, and the electrical performance of the switch is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of changeover switch technology, specifically a locking structure for an isolation type changeover switch. Background Technology

[0002] Currently, transfer switches are widely used in power systems to switch between two power sources and reliably disconnect them to ensure the continuity, reliability, and safety of power supply.

[0003] The prior art discloses application number CN202520917730.1, entitled: "An Isolation Type Changeover Switch", which includes a housing, an operating handle on the housing, a mounting hole on the operating handle, handle shafts for supporting the rotation of the operating handle installed at both ends of the mounting hole, and a spring fixedly installed in the mounting hole and between the two handle shafts; an arc groove is provided below the operating handle, a connecting rod is slidably arranged in the arc groove, a moving contact assembly is fixedly installed below the connecting rod, two moving contacts are installed in the moving contact assembly, and two stationary contact assemblies connected to the moving contacts are fixedly installed inside the housing.

[0004] The shortcomings of the existing technology are that after the switch contacts are turned on, the moving contact assembly is held in place by the spring force and the arc groove on the handle. The two ends of the arc groove on the handle are rounded, and the sliding connecting rod will slide at the arc of the arc groove, which affects the contact stability of the contacts. Therefore, it is necessary to design an isolation type changeover switch locking structure. Utility Model Content

[0005] The purpose of this invention is to provide a locking structure for an isolated changeover switch to solve the problems in the prior art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A locking structure for an isolated changeover switch, the locking structure comprising:

[0008] The outer casing is provided with an operating handle, and the operating handle is provided with an arc groove;

[0009] A moving contact assembly, wherein a connecting rod is fixedly provided on the moving contact assembly;

[0010] The arc groove is slidably connected to the connecting rod, and a locking groove is fixedly provided inside the arc groove.

[0011] Furthermore, two stationary contact assemblies are fixedly installed inside the housing.

[0012] Furthermore, the moving contact assembly is located between two stationary contact assemblies, and the moving contact is disposed on the moving contact assembly.

[0013] Furthermore, the operating handle is rotatably provided with a handle shaft, and the operating handle is provided with a mounting hole.

[0014] Furthermore, a spring is fixedly installed inside the mounting hole, the spring being horizontally positioned within the mounting hole, and both ends of the spring being fixedly connected to the handle shaft.

[0015] Furthermore, the handle shaft is connected to the shaft hole inside the housing.

[0016] The beneficial effects of this utility model are:

[0017] The locking structure of this utility model's isolation type changeover switch involves rotating the handle, causing the sliding connecting rod to slide along the arc groove to the locking groove on the arc groove. The connecting rod, which engages with the locking groove, locks the positions of the two moving contacts, preventing the moving contacts from easily loosening. When the moving contact is in contact with the stationary contact, the compression spring inside the moving contact assembly assists in pressing the moving contact, making the contact between the stationary contact and the moving contact more stable when the switch is turned on, effectively improving the electrical performance of the switch. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of the changeover switch of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the changeover switch of this utility model;

[0021] Figure 3 This is a schematic diagram of the changeover switch part of this utility model;

[0022] Figure 4 This is a schematic diagram of the changeover switch handle of this utility model;

[0023] Figure 5 This is a schematic diagram of the changeover switch of this utility model in the main closed state;

[0024] Figure 6 This is a schematic diagram of the changeover switch of this utility model in the ready-to-operate state.

[0025] The attached diagram is described below:

[0026] 1. Housing; 2. Moving contact; 10. Operating handle; 11. Stationary contact assembly; 12. Moving contact assembly; 13. Arc groove; 131. Locking groove; 14. Mounting hole; 15. Spring; 16. Handle shaft; 17. Connecting rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] A latching structure for an isolated changeover switch, such as Figures 1-6 As shown, the locking structure of the changeover switch includes a housing 1, and an operating handle 10 is provided on the housing 1. The operating handle 10 can be rotated to control the on / off state of the changeover switch.

[0029] Two stationary contact assemblies 11 are fixedly provided inside the housing 1. The stationary contact assembly 11 has a U-shaped structure. Stationary contacts are fixed at both ends of the stationary contact assembly 11. The two stationary contacts on the same stationary contact assembly 11 are arranged opposite to each other, and the moving contact 2 is located between the two stationary contacts.

[0030] The circuit is connected by moving the moving contact 2 and connecting it to the stationary contacts on the two stationary contact assemblies 11.

[0031] A movable contact assembly 12 is slidably disposed inside the housing 1. A movable contact 2 is located on the movable contact assembly 12 and is pressed and fixed by a compression spring. The movable contact assembly 12 is located between two stationary contact assemblies 11, and the movable contact assembly 12 and its movable contact are closer to or further away from the operating handle 10 so that the movable contact makes contact with a stationary contact on the same stationary contact assembly 11, thereby connecting the circuit connected to the changeover switch.

[0032] A handle shaft 16 is rotatably connected to the operating handle 10. The operating handle 10 has a mounting hole 14, and a spring 15 is fixedly installed in the mounting hole 14. The spring 15 is horizontally installed in the mounting hole 14, and both ends of the spring 15 are fixedly connected to the handle shaft 16, so that the handle shaft 16 is installed in the mounting hole 14. The spring force of the spring 15 drives the handle shaft 16 to connect with the shaft hole in the outer casing 1.

[0033] An arc groove 13 is provided below the operating handle 10. Locking grooves 131 are provided at both ends of the arc groove 13. A connecting rod 17 is fixed on the moving contact assembly 12. The connecting rod 17 is slidably connected to the arc groove 13. When the operating handle 10 is rotated, the arc groove 13 is rotated to control the moving contact assembly 12 to move up and down. When the connecting rod 17 moves to the locking grooves 131 at both ends of the arc groove 13, the moving contact assembly 12 is locked by the locking grooves 131.

[0034] In this embodiment, if the production length of the arc groove 13 is too long, a locking groove 131 can also be set in the arc groove 13.

[0035] Furthermore, the connection between the locking groove 131 and the arc groove 13 is smoothly transitioned, allowing the connecting rod 17 to move smoothly and avoiding jamming.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A locking structure for an isolated changeover switch, characterized in that, The locking structure includes: The outer casing (1) is provided with an operating handle (10) and an arc groove (13) is provided on the operating handle (10). Moving contact assembly (12), on which a connecting rod (17) is fixedly provided; The arc groove (13) is slidably connected to the connecting rod (17), and a locking groove (131) is fixedly provided inside the arc groove (13).

2. The locking structure of the isolation type changeover switch according to claim 1, characterized in that, Two stationary contact assemblies (11) are fixedly installed inside the housing (1).

3. The locking structure of the isolated changeover switch according to claim 2, characterized in that, The moving contact assembly (12) is located between two stationary contact assemblies (11), and the moving contact (2) is disposed on the moving contact assembly (12).

4. The locking structure of the isolation type changeover switch according to claim 1, characterized in that, The operating handle (10) is provided with a handle shaft (16) and a mounting hole (14).

5. The locking structure of the isolation type changeover switch according to claim 4, characterized in that, A spring (15) is fixedly installed inside the mounting hole (14). The spring (15) is horizontally installed inside the mounting hole (14), and both ends of the spring (15) are fixedly connected to the handle shaft (16).

6. The locking structure of the isolation type changeover switch according to claim 5, characterized in that, The handle shaft (16) is connected to the shaft hole inside the housing (1).

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