Isolation type change-over switch

Abstract

The utility model relates to the technical field of change-over switches, and discloses an isolation type change-over switch, which comprises a shell, an operating handle arranged on the shell, a mounting hole arranged on the operating handle, handle shafts arranged at two ends of the mounting hole, a spring I fixedly arranged in the mounting hole and between the two handle shafts, and an arc groove arranged below the operating handle, an arc groove is formed in the shell, a connecting rod is slidably arranged in the arc groove, a moving contact assembly is fixedly arranged below the connecting rod, two moving contacts are installed in the moving contact assembly, and two static contact assemblies are fixedly arranged in the shell. The positions of the two moving contacts are locked through the single second spring, the moving contacts are prevented from loosening easily, when the moving contacts are communicated with the static contacts, the second spring assists in pressing the moving contacts, if the arc groove drives the moving contacts to be separated from the static contacts, the moving contacts and the static contacts are separated in time, adhesion is not prone to occurring, the arc groove is connected with the connecting rod in a sliding mode, and the connecting rod is not prone to falling off. The transmission process is not blocked, the operation smoothness is high, the assembly operation is simple and convenient, and the segmentation efficiency of the moving contact is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of change - over switches, and specifically to an isolation type change - over switch. Background Art

[0002] At present, change - over switch appliances are widely used in power systems, used for switching between two power supplies, and reliable disconnection to ensure the continuity, reliability and safety of power supply.

[0003] The prior art discloses an application number: CN201720245097.1, named: Switch device, including a housing, a handle pivotally installed inside the housing with one end extending outside the housing, and a retaining member installed inside the housing. One end of the handle is linked with the retaining member. It also includes a gear - shifting structure that can position the handle in different gears. The gear - shifting structure includes a fixing member provided on the housing and a cooperating member installed on the retaining member. The fixing member and the cooperating member cooperate and limit positions to position the handle in different gears.

[0004] Defects of the prior art: Two springs are used to fixedly support segmented conductive sheets. In the case of adhesion of the conductive sheets, effective circuit segmentation cannot be performed, and transmission through a connecting rod structure is prone to cause transmission jamming, affecting the transmission efficiency of the switch. Therefore, it is necessary to design an isolation type change - over switch. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an isolation type change - over switch to solve the problems in the prior art.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] An isolation type change - over switch, the change - over switch includes a housing, an operating handle is provided on the housing, an installation hole is provided on the operating handle, handle shafts for supporting the rotation of the operating handle are installed at both ends of the installation hole, and a first spring is fixedly provided in the installation hole and between the two handle shafts;

[0008] An arc - shaped groove is provided below the operating handle, a connecting rod slides in the arc - shaped groove, a moving contact assembly is fixedly provided below the connecting rod, two moving contacts are installed in the moving contact assembly, and two static contact assemblies connected to the moving contacts are fixedly provided inside the housing.

[0009] Further, the static contact assembly is of a U - shaped structure, static contacts are fixedly provided at both ends of the static contact assembly, and the moving contact is located between two static contacts on the same static contact assembly.

[0010] Further, an installation groove runs through the moving contact assembly, and two moving contacts are slidably installed in the installation groove.

[0011] Furthermore, protrusions are fixedly provided on opposite sides of the two moving contacts.

[0012] Furthermore, a second spring for fixing the moving contact is fixed on the protrusion, and the second spring is located between the two moving contacts.

[0013] Furthermore, the spring 1 is horizontally arranged in the mounting hole, and both ends of the spring 1 are fixedly connected to the two handle shafts respectively.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model is an isolating type transfer switch, in which the positions of the two moving contacts are locked by a single spring 2 to prevent the moving contact from being easily loosened. When the moving contact is connected to the static contact, the spring 2 assists in pressing the moving contact. If the arc groove drives the moving contact to separate from the static contact, the moving contact and the static contact are separated in time, and adhesion is not easy to occur. At the same time, the arc groove is slidably connected to the connecting rod, and there is no jamming during the transmission process, and the operation is smooth.

[0016] 2. The utility model is an isolated transfer switch that supports the operating handle by pushing the two handle shafts to rotate with the housing through a spring. The assembly operation is simple and the production process is efficient and simple. The installation accuracy of the arc groove and the connecting rod on the operating handle is improved, so as to achieve the effect of improving the assembly accuracy and the segmentation efficiency of the moving contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a structural schematic diagram of the utility model conversion switch;

[0019] Figure 2 It is a cross-sectional view of the utility model transfer switch;

[0020] Figure 3 This is a schematic diagram of the internal structure of the utility model conversion switch;

[0021] Figure 4 This is a front view of the internal structure of the utility model conversion switch;

[0022] Figure 5 This utility model Figure 4 Middle AA section view;

[0023] Figure 6 This is a partial structural diagram of the utility model conversion switch;

[0024] Figure 7 This is a schematic diagram of the utility model conversion switch in a double split state;

[0025] Figure 8It is a schematic diagram of the main closing state of the change-over switch of the present utility model;

[0026] Figure 9 It is a schematic diagram of the standby closing state of the change-over switch of the present utility model.

[0027] The accompanying drawings are described as follows:

[0028] 1. Housing; 2. Moving contact; 10. Operating handle; 11. Static contact assembly; 12. Moving contact assembly; 13. Arc groove; 14. Mounting hole; 15. Spring I; 16. Handle shaft; 17. Connecting rod; 21. Spring II; 22. Bump. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] An isolation type change-over switch, as Figures 1 - 6 shown, the change-over 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 of the change-over switch.

[0031] Two static contact assemblies 11 are fixedly arranged inside the housing 1. The static contact assemblies 11 are U-shaped structures. Static contacts are fixedly arranged at both ends of the static contact assemblies 11. The two static contacts on the same static contact assembly 11 are arranged oppositely, and the moving contact 2 is located between the two static contacts.

[0032] By moving the moving contact 2 to connect with the static contacts on the two static contact assemblies 11, the connection of the circuit is completed.

[0033] A moving contact assembly 12 is slidably arranged inside the housing 1. The moving contact assembly 12 is located between the two static contact assemblies 11, and the moving contact assembly 12 and the moving contact thereon approach or move away in the direction of the operating handle 10, so as to realize the contact between the moving contact and a certain static contact on the same static contact assembly 11, and conduct the circuit connected to the change-over switch.

[0034] The operating handle 10 is rotatably connected to the change-over switch through a handle shaft 16, and a mounting hole 14 is provided on the operating handle 10. A spring I 15 is fixedly arranged inside the mounting hole 14. The spring I 15 is horizontally arranged inside the mounting hole 14. Handle shafts 16 are installed at both ends of the mounting hole 14. Both ends of the spring I 15 are fixedly connected to the handle shafts 16 at both ends of the mounting hole 14 respectively, so as to push the handle shaft 16 to rotatably connect with the shaft hole on the housing 1, and support and fix the rotation of the operating handle 10.

[0035] An arc groove 13 is formed below the operating handle 10. A connecting rod 17 is fixedly provided on the moving contact assembly 12. The connecting rod 17 is slidably connected to the arc groove 13. When the operating handle 10 rotates, the arc groove 13 is utilized to rotate to control the up-and-down movement of the moving contact assembly 12, thereby operating the moving contact assembly 12.

[0036] An installation groove is formed through the moving contact assembly 12. Two moving contacts 2 are slidably provided in the installation groove. A convex point 22 is fixedly provided on one side of the two moving contacts 2 facing each other. A second spring 21 is fixedly installed on the convex point 22. The second spring 21 is located between the two moving contacts 2 to press the two moving contacts 2 against the upper and lower sides of the installation groove. When the moving contact 2 is connected to the static contact on the upper side or the lower side, the second spring 21 will press the moving contact 2 to improve the connection stability. Moreover, the moving contact assembly 12 and the moving contacts 2 adopt a modular structure, enabling the two moving contacts 2 to move centrally, with high operating stability. And the two moving contacts 2 work separately, enabling the standby circuit and the main circuit of the change-over switch to work independently, improving the safety of the change-over switch.

[0037] Due to the design of the first spring 15 on the operating handle 10, the two handle shafts 16 are connected to the shaft holes on the housing 1. The resistance is provided by the mutual friction between the handle shaft 16 and the shaft hole to ensure the stability of the switch in the three positions of main closing, double opening, and standby closing. As Figure 7 shown, when the switch is in the double-opening state, all the moving contacts are not in contact with the static contacts and maintain a certain distance. When the operating handle 10 rotates counterclockwise by 45 degrees, the moving contact assembly 12 moves downward. The moving contact 2 located below first contacts the static contact, and then the second spring 21 is compressed to provide contact pressure for the moving contact 2, making the switch in the main closing state. On the contrary, when the operating handle 10 rotates clockwise by 45 degrees, the switch is in the standby closing state at this time.

[0038] 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An isolation type transfer switch, the transfer switch comprising a housing (1), characterized in that: The housing (1) is provided with an operating handle (10), the operating handle (10) is provided with a mounting hole (14), handle shafts (16) for supporting the operating handle (10) to rotate are mounted at both ends of the mounting hole (14), and a spring (15) is fixedly mounted in the mounting hole (14) and between the two handle shafts (16); An arc groove (13) is provided below the operating handle (10), a connecting rod (17) is slidably provided in the arc groove (13), a moving contact assembly (12) is fixedly provided below the connecting rod (17), two moving contacts (2) are installed in the moving contact assembly (12), and two stationary contact assemblies (11) connected to the moving contacts (2) are fixedly provided in the housing (1).

2. An isolating transfer switch according to claim 1, characterized in that: The stationary contact assembly (11) is a U-shaped structure, with stationary contacts fixedly provided at both ends of the stationary contact assembly (11), and the moving contact (2) being located between two stationary contacts on the same stationary contact assembly (11).

3. The isolating transfer switch according to claim 1, characterized in that: The movable contact assembly (12) is provided with a mounting groove extending therethrough, and the two movable contacts (2) are slidably mounted in the mounting groove.

4. The isolation type transfer switch according to claim 3, characterized in that: A convex point (22) is fixedly provided on one opposite side of the two moving contacts (2).

5. The isolation type transfer switch according to claim 4, characterized in that: A second spring (21) for fixing the moving contact (2) is fixed on the protrusion (22); the second spring (21) is located between the two moving contacts (2).

6. The isolating transfer switch according to claim 1, characterized in that: The spring one (15) is horizontally arranged in the mounting hole (14), and the two ends of the spring one (15) are respectively fixedly connected to the two handle shafts (16).

Images