CN210429637U

CN210429637U - Change-over switch

Info

Publication number: CN210429637U
Application number: CN201921398046.8U
Authority: CN
Inventors: 林永林
Original assignee: Guangzhou Tongkai Electrical Equipment Co ltd
Current assignee: Guangzhou Tongkai Electrical Equipment Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-04-28
Anticipated expiration: 2029-08-27

Abstract

The utility model provides a change-over switch, its characterized in that: the rotary disc is rotated in the positive and negative directions, so that the movable contact can respectively contact and press the first fixed contact and the second fixed contact, the first fixed contact is pressed to be connected with the first bypass, and the second fixed contact is pressed to be connected with the second bypass. The change-over switch triggers the movable contact to rotate through the rotating disc, the two ends of the movable contact trigger the switches of different bypasses to control the opening or closing of the different bypasses, the mechanical mechanism is simple, the mechanical action is small in the switching process, and the main structure of the change-over switch is an insulator and is not easy to generate electric arcs.

Description

Change-over switch

Technical Field

The utility model relates to an electrical switching equipment technical field especially relates to a change over switch.

Background

A change-over switch is an electrical switch for switching different lines, and is a device capable of switching between different lines, and the change-over switch generally acts on lines connected to coils of different contactors, and switches the lines by operating a knob. The mechanical structure of the existing change-over switch is generally complex, the mechanical action is large in the process of operating a switch knob, electric arcs are easy to generate, the circuit is unstable in the switching moment, and the follow-up problem is easy to generate.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a transfer switch for solving the above problems, in which the mechanical action of the switching process is small and the generation of arc is not easy.

The utility model provides a technical scheme that its technical problem adopted is:

a change-over switch comprises a rotating disc, a movable contact, a first fixed contact and a second fixed contact, wherein a rotating shaft connected with a knob is arranged at the circle center of the rotating disc, the movable contact can be respectively contacted and pressed against the first fixed contact and the second fixed contact by rotating the rotating disc in the positive and negative directions, the first fixed contact is pressed against a first bypass to be switched on, and the second fixed contact is pressed against a second bypass to be switched on.

Further, the movable contact comprises a first contact, a second contact, a central spring shaft and a contact roller, the contact roller is located on the circumference of the rotating disc, the circumference of the rotating disc is provided with an arc-shaped groove, the contact roller is meshed with the arc-shaped groove, the movable contact can rotate along the central spring shaft, the first fixed contact is located on the rotating path of the first contact, and the second fixed contact is located on the rotating path of the second contact.

Further, the central spring shaft is arranged at the tail end of the movable contact, the contact roller is arranged at the head end of the movable contact, and the first contact and the second contact are L-shaped rods and are respectively arranged on two sides of the contact roller.

Furthermore, the first fixed contact and the second fixed contact are respectively arranged on a supporting groove, the bottom surfaces of the first fixed contact and the second fixed contact are connected with spring rods, a contact switch is arranged in the supporting groove in the direction of the bottom surfaces of the first fixed contact and the second fixed contact, and the contact switch is switched on by pressing the bypass.

Furthermore, the head ends of the first fixed contact and the second fixed contact extend out of the supporting groove.

The utility model has the advantages that:

by adopting the technical scheme, the change-over switch triggers the movable contact to rotate through the rotating disc, the two ends of the movable contact trigger the switches of different bypasses to control the disconnection or the connection of the different bypasses, the mechanical mechanism is simple, the mechanical action is small in the switching process, and the main structure of the change-over switch is an insulator and is not easy to generate electric arcs.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic diagram of the state of the transfer switch of the present invention in which the bypass is not to be connected;

fig. 2 is a schematic diagram illustrating a state in which the transfer switch of the present invention switches on the first bypass;

fig. 3 is a schematic diagram illustrating a state in which the transfer switch of the present invention switches on the second bypass;

fig. 4 is a schematic structural diagram of the contact and the fixed contact of the transfer switch of the present invention.

Reference numerals: 1. rotating the disc; 11. a rotating shaft; 12. an arc-shaped slot; 2. a movable contact; 21. a first contact; 22. a second contact; 23. a central spring shaft; 24. a contact roller; 3. a first fixed contact; 4. a second fixed contact; 5. a support groove; 6. a spring lever; 7. a contact switch.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1-3, a change-over switch comprises a rotating disc 1, a movable contact 2, a first fixed contact 3 and a second fixed contact 4, wherein a rotating shaft 11 connected with a knob is arranged at the circle center of the rotating disc 1, the movable contact 2 can be respectively contacted with and presses the first fixed contact 3 and the second fixed contact 4 by rotating the rotating disc 1 in the forward and reverse directions, the first fixed contact 3 is pressed by a first bypass, and the second fixed contact 4 is pressed by a second bypass.

Wherein, the first fixed contact 3 and the second fixed contact 4 act on the switches of the first bypass and the second bypass respectively, the first fixed contact 3 or the second fixed contact 4 is pressed to be jointed with the corresponding bypass, and the corresponding bypass is not pressed to be disconnected. When the knob of the change-over switch is twisted, the rotating disc 1 rotates along with the knob, so that the first fixed contact 3 and the second fixed contact 4 contact and press the first fixed contact 3 and the second fixed contact 4, and then the corresponding bypass is jointed. The change-over switch and the knob of the existing change-over switch have a limit position, and can only rotate a certain angle. That is, the change-over switch has a first bypass-on range, a second bypass-on range, and a closed range, as in the case of the conventional change-over switch. The mechanical mechanism of the change-over switch is simple, the mechanical action is small in the switching process, and the main structure knob, the rotating disc 1, the movable contact 2, the first fixed contact 3 and the second fixed contact 4 of the change-over switch are insulators, so that electric arcs are not easy to generate.

As an embodiment, a specific structure of the transfer switch, the movable contact 2 includes a first contact 21, a second contact 22, a central spring shaft 23, and a contact roller 24, the contact roller 24 is located on the circumference of the rotating disk 1, the circumference of the rotating disk 1 has an arc-shaped groove 12, the contact roller 24 is engaged with the arc-shaped groove 12, the movable contact 2 is rotatable along the central spring shaft 23, the first fixed contact 3 is located on the rotation path of the first contact 21, and the second fixed contact 4 is located on the rotation path of the second contact 22. As shown in fig. 1, when the changeover switch is in the off position, the contact roller 24 is engaged in the arc-shaped groove 12, and neither the first contact 21 nor the second contact 22 is in contact with the corresponding fixed contact. As shown in fig. 2, when the knob is twisted to the first bypass connection position, that is, in the case that the rotary disk 1 rotates clockwise in the drawing, the arc-shaped groove 12 pushes the contact roller 24 during the rotation, so that the movable contact 2 rotates counterclockwise, the first contact 21 contacts with the first fixed contact 3 and presses the first fixed contact 3, the first bypass is connected, and since the arc-shaped groove 12 exceeds the contact roller 24, the contact roller 24 contacts with the circumference of the rotary disk 1, and the first contact 21 keeps the state of pressing the first fixed contact 3. As shown in fig. 3, when the knob is twisted to the second bypass-on position, the second contact 22 contacts the second fixed contact 4 and presses the second fixed contact 4 to close the second bypass, similarly to the twist of the knob to the second bypass-on position.

More specifically, in a specific structure of the movable contact 2, the central spring shaft 23 is disposed at the tail end of the movable contact 2, the contact roller 24 is disposed at the head end of the movable contact 2, the first contact 21 and the second contact 22 are L-shaped rods, and are disposed at two sides of the contact roller 24, the general structure is in a claw shape in the drawing, and during the rotation of the movable contact 2, the first contact 21 and the second contact 22 approach to move towards the first fixed contact 3 and the second fixed contact 4 in a vertical direction, which is beneficial to pressing the first fixed contact 3 and the second fixed contact 4.

As an embodiment, a specific structure of the transfer switch, as shown in fig. 4, the transfer switch has two supporting grooves 5, contact switches 7 for making a bypass are respectively disposed at bottom positions of the supporting grooves 5, a first fixed contact 3 and a second fixed contact 4 are respectively disposed on the respective supporting grooves 5, and spring rods 6 are connected to bottom surfaces thereof. When the first fixed contact 3 or the second fixed contact 4 is pressed, it moves in the direction of the bottom surface, and the bottom thereof presses the contact switch 7, so that the bypass is closed. When the first fixed contact 3 or the second fixed contact 4 is not pressed, the contact is reset by the action of the spring rod 6, and the contact leaves the contact switch 7, so that the bypass is cut off. Specifically, the head ends of the first fixed contact 3 and the second fixed contact 4 extend out of the supporting groove 5, the side edges of the tail ends approach the supporting groove 5, and the first contact 21 and the second contact 22 can effectively press the contact switch 7.

The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.

Claims

1. A transfer switch, characterized by: the rotary disc is provided with a rotating shaft connected with the knob at the circle center, the movable contact can be respectively contacted and pressed against the first fixed contact and the second fixed contact by rotating the rotary disc in the positive and negative directions, the first fixed contact is pressed against the first bypass to be switched on, and the second fixed contact is pressed against the second bypass to be switched on.

2. A diverter switch according to claim 1, characterized in that: the movable contact comprises a first contact, a second contact, a central spring shaft and a contact roller, the contact roller is located on the circumference of the rotating disc, an arc-shaped groove is formed in the circumference of the rotating disc, the contact roller is meshed with the arc-shaped groove, the movable contact can rotate along the central spring shaft, the first fixed contact is located on the rotating path of the first contact, and the second fixed contact is located on the rotating path of the second contact.

3. A diverter switch according to claim 2, characterized in that: the central spring shaft is arranged at the tail end of the movable contact, the contact roller is arranged at the head end of the movable contact, and the first contact and the second contact are L-shaped rods and are respectively arranged at two sides of the contact roller.

4. A diverter switch according to claim 1, characterized in that: the first fixed contact and the second fixed contact are respectively arranged on the supporting grooves, the bottom surfaces of the first fixed contact and the second fixed contact are connected with the spring rods, the supporting grooves are provided with contact switches in the direction of the bottom surfaces of the first fixed contact and the second fixed contact, and the contact switches are switched on by pressing the bypass.

5. A diverter switch according to claim 4, characterized in that: the head ends of the first fixed contact and the second fixed contact extend out of the supporting groove.