Isolation type change-over switch

Abstract

The utility model relates to the technical field of isolation type change-over switches, in particular to an isolation type change-over switch which comprises a first shell and a second shell, the first shell and the second shell are installed in a clamping mode, and a first limiting groove and a second limiting groove are formed in the inner wall of the first shell and the inner wall of the second shell respectively. A conversion seat is slidably connected between the first shell and the second shell, an operation mechanism used for driving the conversion seat to move is rotatably connected between the first shell and the second shell, positioning pieces are clamped and mounted on the two sides of the conversion seat, and the two positioning pieces are clamped and matched with the first limiting groove and the second limiting groove respectively; the switching seat is controlled to move through the operating mechanism, so that the two groups of moving contacts are separated from or connected with the first static contact and the second static contact, the positioning piece is matched with the first limiting groove and the second limiting groove, the switching seat reliably runs up and down, the moving contacts and the pressure spring are both located in the switching seat, the energy storage positioning piece is integrated, the number of parts is reduced, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of isolated transfer switches, and specifically to an isolated transfer switch. Background Technique

[0002] An isolated transfer switch is a low-voltage switch for switching multiple circuits. Multiple moving contacts are welded on the shaft. When the shaft rotates, the moving contacts are successively connected or disconnected from the static contacts to switch the circuit and change the circuit connection from one group to another.

[0003] For example, in an existing isolated transfer switch such as a transfer switch proposed in the patent application number "CN202321234868.9", through structures such as an upper moving contact plate, a spring, a lower moving contact plate, a static contact plate, and a linkage assembly, the spring is arranged between the housing and the connecting piece. The on-off of the transfer switch is controlled by driving the linkage assembly through a control handle. The static contact plate is fixed to the housing and the wire is placed between the static contact plate and the wiring frame, and the wire clamping is tighter.

[0004] However, in the prior art, the spring is arranged between the housing and the connecting piece, and the two groups of moving contact plates are located inside the connecting piece. The spring and the connecting piece are separated, with more parts and a complex structure, which is inconvenient for installation. Therefore, an isolated transfer switch is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an isolated transfer switch to solve the problems raised in the above background technique.

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

[0007] An isolated transfer switch includes a first housing and a second housing. The first housing and the second housing are snap-fitted and installed. First limiting grooves and second limiting grooves are respectively formed on the inner walls of the first housing and the second housing. A transfer seat is slidably connected between the first housing and the second housing, and an operating mechanism for driving the transfer seat to move is rotatably connected between the first housing and the second housing;

[0008] Positioning members are snap-fitted and installed on both sides of the transfer seat. The two groups of positioning members are respectively in snap-fit with the first limiting groove and the second limiting groove. Two moving contacts are slidably connected inside the transfer seat. A compression spring is snap-fitted between the two moving contacts. A first static contact and a second static contact are snap-fitted inside the first housing. The moving contacts are in contact and cooperation with the first static contact and the second static contact.

[0009] Preferably, both the first limiting groove and the second limiting groove are arranged in a wave shape. Convex protrusions are fixedly connected to the ends of the two groups of positioning members, and the convex protrusions are in extrusion cooperation with the grooves.

[0010] Preferably, the operating mechanism includes an operating handle which is rotatably connected between the first housing and the second housing. A circular shaft is fixedly connected to the upper end of the conversion base, and one end of the operating handle is in sliding driving cooperation with the circular shaft.

[0011] Preferably, compression feet are fixedly connected to the ends of the two positioning members away from the convex hull, and the compression feet are clamped in the conversion base.

[0012] Preferably, protrusions are fixedly connected to one side of the two moving contacts, and the two ends of the compression spring are respectively clamped and installed with the two protrusions.

[0013] Preferably, a plurality of positioning feet are fixedly connected inside the first housing, and a plurality of positioning grooves are formed inside the second housing. The plurality of positioning feet are respectively in clamping cooperation with the plurality of positioning grooves.

[0014] Advantages of the present utility model:

[0015] The present utility model controls the movement of the conversion base through the operating mechanism, so that the two moving contacts are separated from or connected to the first static contact and the second static contact. The positioning members cooperate with the first limiting groove and the second limiting groove, so that the conversion base runs reliably up and down. The moving contacts and the compression spring are both located inside the conversion base, and the energy storage positioning member is integrated, simplifying the number of parts and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the conversion base of the present utility model;

[0019] Figure 3 is a schematic diagram of the installation structure of the conversion base of the present utility model;

[0020] Figure 4 is a schematic diagram of the structure of the compression spring of the present utility model;

[0021] Figure 5 is a schematic diagram of the structure of the first housing of the present utility model;

[0022] Figure 6 is a schematic diagram of the structure of the second housing of the present utility model;

[0023] The reference numerals in the drawings are as follows:

[0024] 10. First housing; 101. First limiting groove; 102. Positioning foot; 12. Second housing; 121. Second limiting groove; 122. Positioning groove; 20. Round shaft; 21. Conversion seat; 22. Positioning member; 221. Convex hull; 222. Compression foot; 30. First static contact; 31. Second static contact; 40. Moving contact; 401. Protrusion; 41. Compression spring; 50. Operating handle. Detailed implementation manner

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0026] An isolation type changeover switch, as Figures 1-6 shown, includes a first housing 10 and a second housing 12. The first housing 10 and the second housing 12 are snap-fitted and installed. The first housing 10 and the second housing 12 accommodate mechanisms. A first limiting groove 101 and a second limiting groove 121 are respectively formed on the inner walls of the first housing 10 and the second housing 12. A conversion seat 21 is slidably connected between the first housing 10 and the second housing 12. An operating mechanism for driving the conversion seat 21 to move is rotatably connected between the first housing 10 and the second housing 12;

[0027] Positioning members 22 are snap-fitted and installed on both sides of the conversion seat 21. The two groups of positioning members 22 are respectively engaged with the first limiting groove 101 and the second limiting groove 121. Two groups of moving contacts 40 are slidably connected inside the conversion seat 21. A compression spring 41 is snap-fitted between the two groups of moving contacts 40. A first static contact 30 and a second static contact 31 are snap-fitted inside the first housing 10. The moving contacts 40 are in contact and cooperation with the first static contact 30 and the second static contact 31. The two groups of moving contacts 40 are pressed and limited on the conversion seat 21 by a compression spring 41 to ensure the same pressure between the two moving contacts 40, improve the reliability of the operating mechanism for the up and down movement of the moving contacts 40, and the positioning members 22 replace the springs, reducing the assembly difficulty and cost.

[0028] By controlling the movement of the conversion seat 21 through the operating mechanism, the two groups of moving contacts 40 are separated from or connected to the first static contact 30 and the second static contact 31. The positioning members 22 cooperate with the first limiting groove 101 and the second limiting groove 121 to enable the reliable up and down operation of the conversion seat 21. The moving contacts 40 and the compression spring 41 are both located inside the conversion seat 21. The energy storage positioning members 22 are integrated, simplifying the number of parts and facilitating installation.

[0029] As Figure 1As shown, the switch is in the double-break state, and the two sets of moving contacts 40, the first static contact 30, and the second static contact 31 are not in contact and maintain a certain distance. When the operating mechanism rotates counterclockwise by 45 degrees, the conversion seat 21 moves downward, and the moving contact 40 first contacts the first static contact 30 and the second static contact 31, and then compresses the compression spring 41 to provide contact pressure, and the switch is in the main-closed state. When the operating mechanism rotates clockwise by 45 degrees, the switch is in the standby-closed state.

[0030] As Figure 3 shown, both the first limiting groove 101 and the second limiting groove 121 are arranged in a wavy shape, and convex bumps 221 are fixedly connected to the ends of the two sets of positioning members 22, and the convex bumps 221 are in extrusion fit with the grooves.

[0031] The convex bumps 221 at the heads of the positioning members 22 and the first limiting groove 101 and the second limiting groove 121 of the first housing 10 and the second housing 12 friction with each other to provide resistance to ensure the stability of the switch in the three positions of main-closed, double-break, and standby-closed.

[0032] As Figure 1 shown, the operating mechanism includes an operating handle 50, the operating handle 50 is rotatably connected between the first housing 10 and the second housing 12, a circular shaft 20 is fixedly connected to the upper end of the conversion seat 21, and one end of the operating handle 50 is in sliding driving fit with the circular shaft 20.

[0033] When the operating handle 50 rotates and changes the position of the arc track, it will squeeze or pull the circular shaft 20 to move the conversion seat 21 up and down.

[0034] As Figure 2 shown, compression feet 222 are fixedly connected to the ends of the two sets of positioning members 22 away from the convex bumps 221, and the compression feet 222 are clamped in the conversion seat 21.

[0035] The compression feet 222 can replace the spring to achieve energy storage, and are not easy to fall off when installed in the conversion seat 21, making the installation convenient.

[0036] As Figure 4 shown, protrusions 401 are fixedly connected to one side of the two sets of moving contacts 40, and the two ends of the compression spring 41 are respectively clamped and installed with the two sets of protrusions 401.

[0037] By restricting the connection position of the compression spring 41 through the protrusions 401, the two sets of moving contacts 40 share a set of compression springs 41 and are reliably connected, reducing the height of the first static contact 30 and the second static contact 31 and the number of springs of the moving contact 40, thereby reducing costs.

[0038] As Figures 5-6 shown, multiple sets of positioning feet 102 are fixedly connected inside the first housing 10, multiple sets of positioning grooves 122 are opened inside the second housing 12, and the multiple sets of positioning feet 102 are respectively in clamping fit with the multiple sets of positioning grooves 122.

[0039] The first housing 10 and the second housing 12 respectively have at least two positioning feet 102 and positioning grooves 122 that cooperate with each other, thereby reducing the fitting clearance generated by the deformation of the first housing and the second housing, and making the product more beautiful.

[0040] The working principle of an isolation type changeover switch provided by the utility model is as follows:

[0041] By operating the operating mechanism to control the movement of the conversion base 21, the two groups of moving contacts 40 are separated from or connected to the first static contact 30 and the second static contact 31. The positioning member 22 cooperates with the first limiting groove 101 and the second limiting groove 121 to enable the reliable up-and-down operation of the conversion base 21. The moving contact 40 and the compression spring 41 are both located inside the conversion base 21, and the energy storage positioning member 22 is integrated, simplifying the number of parts and facilitating installation.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. An isolated transfer switch, comprising a first housing (10) and a second housing (12), characterized in that, The first housing (10) and the second housing (12) are snap-fitted and installed. The inner walls of the first housing (10) and the second housing (12) are respectively provided with a first limiting groove (101) and a second limiting groove (121). A conversion base (21) is slidably connected between the first housing (10) and the second housing (12). An operating mechanism for driving the conversion base (21) to move is rotatably connected between the first housing (10) and the second housing (12). Positioning members (22) are snap-fitted and installed on both sides of the conversion base (21). The two groups of positioning members (22) are respectively snap-fitted with the first limiting groove (101) and the second limiting groove (121). Two moving contacts (40) are slidably connected inside the conversion base (21). A compression spring (41) is snap-fitted between the two moving contacts (40). A first static contact (30) and a second static contact (31) are snap-fitted inside the first housing (10). The moving contacts (40) are in contact and cooperation with the first static contact (30) and the second static contact (31).

2. The isolated transfer switch according to claim 1, wherein Both the first limiting groove (101) and the second limiting groove (121) are arranged in a wavy shape. Convex bumps (221) are fixedly connected to the ends of the two groups of positioning members (22). The convex bumps (221) are in extrusion cooperation with the grooves.

3. An isolated transfer switch according to claim 1, wherein, The operating mechanism includes an operating handle (50). The operating handle (50) is rotatably connected between the first housing (10) and the second housing (12). A circular shaft (20) is fixedly connected to the upper end of the conversion base (21). One end of the operating handle (50) is in sliding driving cooperation with the circular shaft (20).

4. An isolated transfer switch according to claim 2, characterized in that, Compression feet (222) are fixedly connected to the ends of the two groups of positioning members (22) away from the convex bumps (221). The compression feet (222) are snap-fitted inside the conversion base (21).

5. An isolated transfer switch according to claim 1, characterized in that, Protrusions (401) are fixedly connected to one side of the two groups of moving contacts (40). The two ends of the compression spring (41) are respectively snap-fitted and installed with the two groups of protrusions (401).

6. The isolated transfer switch according to claim 1, characterized in that, Multiple positioning feet (102) are fixedly connected inside the first housing (10). Multiple positioning grooves (122) are provided inside the second housing (12). The multiple positioning feet (102) are respectively snap-fitted with the multiple positioning grooves (122).

Images