Change-over switch
By designing a replaceable contact and spring structure, the problems of contact burnout and spring fatigue in the changeover switch were solved, reducing maintenance costs and extending equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-17
- Publication Date
- 2026-04-10
AI Technical Summary
The contacts of existing changeover switches are prone to burnout after prolonged use, resulting in high maintenance costs, and spring metal fatigue leads to poor contact.
A changeover switch was designed with replaceable contacts and springs, which can be replaced separately by disassembling the telescopic housing and rotating the rear cover, thus reducing maintenance costs.
It enables quick replacement of contacts and springs, reduces maintenance costs, avoids complete disassembly, and extends the service life of the equipment.
Smart Images
Figure CN224110195U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a change-over switch technical field especially relates to a change-over switch. BACKGROUND
[0002] Change-over switch is a kind of low-voltage switch that switches multiple circuits. Multiple moving contacts are welded on the shaft, and when the shaft rotates, the moving contacts are sequentially connected or disconnected with static contacts to switch circuits. It is an electrical appliance that changes the connection from one group to another. There are two types: discrete and integrated.
[0003] The existing change-over switch contact is prone to burnout after long-term use, and the burned contact needs to be replaced as a whole, so the maintenance cost is high. At the same time, the contact pressure adjustment depends on the deformation of the spring, and after long-term use, the spring metal fatigue elasticity decreases, which leads to poor contact, so it needs to be further improved. UTILITY MODEL CONTENT
[0004] The utility model discloses a change-over switch, aims at solving the technical problem in the background art.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A change-over switch, comprising a change-over switch main unit and a contact auxiliary unit:
[0007] The change-over switch main unit comprises a main plate, a rotating handle is rotatably installed on one side of the main plate, an outer shell is fixedly installed on the other side of the main plate away from the rotating handle, a contact disc is rotatably installed inside the outer shell, an arc block is fixedly installed on the outer wall of the contact disc, and a contact is fixedly installed on the outer wall of the arc block.
[0008] The contact auxiliary unit comprises a mounting plate, a mounting block is fixedly installed on one side of the mounting plate, a telescopic shell is fixedly installed inside the mounting block, a bolt is inserted into the mounting plate, a protruding end is slidably installed on one end of the telescopic shell, a spring is arranged inside the telescopic shell, and a rear cover is fixedly and threadedly installed on the other end of the telescopic shell away from the protruding end.
[0009] In one preferred scheme, an electrification plate is fixedly installed in the clamping groove of the contact disc, and the outer wall of the contact is electrically installed with the electrification plate.
[0010] In one preferred scheme, the rotating rod of the contact disc penetrates and is rotatably installed on one side of the outer shell, and one end of the rotating rod away from the contact disc is fixedly installed on the rotating handle.
[0011] In one preferred scheme, a threaded hole is formed in the inner part of the outer shell, and the outer shell is threadedly installed with the bolt through the threaded hole.
[0012] In a preferred scheme, the telescopic shell is provided with a through-hole sliding groove at one end, and the extension end is slidably arranged in the telescopic shell through the through-hole sliding groove.
[0013] In a preferred scheme, one end of the spring is tightly abuttingly arranged with the extension end, and the other end of the spring is tightly abuttingly arranged with the rear cover.
[0014] In a preferred scheme, the extension end is fixedly arranged with a limiting plate at one end, and the limiting plate of the extension end is slidably arranged in the telescopic shell.
[0015] As can be seen from the above, the switch has the following technical effects.
[0016] Firstly, when the contact needs to be replaced, the mounting plate and the shell are separated by unscrewing the bolt, and the mounting plate, the mounting block, the telescopic shell, the contact and the arc block are pulled out from the inside of the shell, the telescopic shell can be disassembled, when the arc block and the contact are seriously burned and cannot be used, the telescopic shell can be quickly disassembled and replaced, without the need for overall disassembly, thereby reducing the maintenance cost.
[0017] Secondly, when the spring inside the telescopic shell needs to be replaced, the rear cover is only rotated and unscrewed, the spring can be taken out and replaced, the spring can be replaced alone, when the spring repeatedly rebounds and causes metal fatigue, the spring can be replaced alone, without the need for overall replacement, thereby further reducing the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The utility model provides a front view structure schematic diagram.
[0019] Figure 2 The utility model provides a side sectional structure schematic diagram.
[0020] Figure 3 The utility model provides a part structure schematic diagram.
[0021] Figure 4 The utility model provides a part sectional structure schematic diagram.
[0022] In the drawings: 100, switch main unit; 200, contact auxiliary unit; 101, main plate; 102, handle; 103, shell; 105, touch disc; 106, arc extinguishing grid; 107, contact; 108, arc block; 201, mounting plate; 202, mounting block; 203, telescopic shell; 204, bolt; 205, extension end; 206, spring; 207, rear cover. DETAILED DESCRIPTION
[0023] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments.
[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0025] Referring to Figures 1-4 A change-over switch, comprising a change-over switch main unit 100 and a contact auxiliary unit 200:
[0026] The change-over switch main unit 100 comprises a main plate 101, one side of the main plate 101 is rotatably installed with a handle 102, the handle 102 is convenient for hand rotation, the other side of the main plate 101 away from the handle 102 is fixedly installed with an outer shell 103, which is insulated to prevent electric leakage, the outer shell 103 is rotatably installed with a contact disc 105 inside, the contact disc 105 is fixedly installed with an arc extinguishing grid 106 on the outer wall, the contact disc 105 is fixedly installed with a circular arc block 108 on the outer wall, the circular arc block 108 is fixedly installed with a contact 107 on the outer wall, the arc extinguishing grid 106 extinguishes arc, reduces the burning speed of the contact 107 and the circular arc block 108, and the arc surface of the circular arc block 108 reduces the wear speed by reducing the contact area;
[0027] The contact auxiliary unit 200 comprises a mounting plate 201, one side of the mounting plate 201 is fixedly installed with a mounting block 202, the mounting block 202 is fixedly installed with a telescopic shell 203 inside, the mounting plate 201 is inserted with a bolt 204 inside, the mounting plate 201 can quickly install and dismount the mounting block 202 in cooperation with the bolt 204, the mounting block 202 can be connected with an electric appliance, one end of the telescopic shell 203 is slidably installed with an extension end 205, the telescopic shell 203 is provided with a spring 206 inside, the other end of the telescopic shell 203 away from the extension end 205 is fixedly and threadedly installed with a rear cover 207, the rear cover 207 can be conveniently replaced by rotating to open the rear cover 207.
[0028] When the contact 107 needs to be replaced in the embodiment, the mounting plate 201 and the shell 103 are separated by unscrewing the bolt 204, and the mounting plate 201, the mounting block 202, the telescopic shell 203, the contact 107 and the arc block 108 are pulled out from the inside of the shell 103, that is, the telescopic shell 203 is disassembled. When the arc block 108 and the contact 107 are severely burned and cannot be used, they can be quickly disassembled and replaced without the need for overall disassembly, thereby reducing maintenance costs. At the same time, when the spring 206 inside the telescopic shell 203 needs to be replaced, the spring 206 can be removed and replaced by rotating and unscrewing the rear cover 207, so that the spring 206 can be replaced individually. When the spring 206 is repeatedly rebounded and causes metal fatigue, the spring 206 can be replaced individually without the need for overall replacement, thereby further reducing maintenance costs.
[0029] In a preferred embodiment, a clamping groove is formed in the touch disc 105, and a power passing plate is fixedly installed in the clamping groove of the touch disc 105. The outer wall of the contact 107 is electrically connected to the power passing plate.
[0030] In the embodiment, the contact 107 contacts the power passing plate to turn on the power supply, and the clamping groove can help position the contact 107 to avoid loosening of the contact 107 under the influence of non-human force.
[0031] In a preferred embodiment, a rotating rod is fixedly installed at one end of the touch disc 105, the rotating rod of the touch disc 105 penetrates through and is rotatably installed on one side of the shell 103, and the end of the rotating rod away from the touch disc 105 is fixedly installed on the handle 102.
[0032] In the embodiment, the rotating rod can stably rotate the touch disc 105, and the handle 102 is connected to the rotating rod, so that the touch disc 105 is driven to rotate when the handle 102 is rotated by hand.
[0033] In a preferred embodiment, a threaded hole is formed in the shell 103, and the shell 103 is screwedly installed with the bolt 204 through the threaded hole.
[0034] In the embodiment, the bolt 204 is screwedly installed with the shell 103 to stably position the bolt 204, so that the nut of the bolt 204 tightly abuts against one side of the mounting plate 201.
[0035] In a preferred embodiment, a through hole sliding groove is formed at one end of the telescopic shell 203, and the extension end 205 is slidingly installed with the telescopic shell 203 through the through hole sliding groove.
[0036] In the embodiment, the extension end 205 can slide in and out of the telescopic shell 203 through the through hole sliding groove.
[0037] In a preferred embodiment, one end of the spring 206 is in close contact with the extension end 205, and the other end of the spring 206 is in close contact with the rear cover 207.
[0038] In this embodiment, the position of the spring 206 is stabilized, and the rebound direction of the spring 206 is ensured.
[0039] In a preferred embodiment, one end of the extension end 205 is fixedly installed with a limiting plate, and the limiting plate of the extension end 205 is slidingly installed inside the telescopic shell 203.
[0040] In this embodiment, the limiting plate can prevent the extension end 205 from completely separating from the inside of the telescopic shell 203.
[0041] Working principle: when in use, first rotate the handle 102 to drive the contact disc 105 to rotate, at this time, the contact points 107 and the arc blocks 108 slide on the surface of the contact disc 105 until one of the contact points 107 is clamped into the clamping groove of the contact disc 105, that is, the contact disc 105 is electrified with the contact point 107, and the contact point 107 is clamped into the clamping groove of the contact disc 105 by the rebound of the spring 206 when the power is turned on;
[0042] When the contact point 107 needs to be replaced, the bolt 204 is unscrewed to separate the mounting plate 201 and the shell 103, and the mounting plate 201, the mounting block 202, the telescopic shell 203, the contact point 107 and the arc block 108 are pulled out from the inside of the shell 103, so that the telescopic shell 203 can be disassembled, and when the spring 206 inside the telescopic shell 203 needs to be replaced, the rear cover 207 is rotated and unscrewed, so that the spring 206 can be taken out and replaced.
[0043] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Substitution can be substitution of part of the structure, device, method step, or complete technical solution. According to the technical solution and the inventive concept of the present application, equivalent substitution or change should be covered within the protection scope of the present application.
Claims
1. A change-over switch comprising a change-over switch main unit (100) and a contact auxiliary unit (200), characterized in that: The change-over switch main unit (100) comprises a main plate (101), one side of which is rotatably installed with a handle (102), and the other side away from the handle (102) is fixedly installed with a shell (103), the inside of which is rotatably installed with a contact disc (105), the outer wall of which is fixedly installed with an arc extinguishing grid (106), the outer wall of which is fitted with a circular arc block (108), and the outer wall of which is fixedly installed with a contact (107); The contact auxiliary unit (200) comprises a mounting plate (201), one side of which is fixedly installed with a mounting block (202), the inside of which is fixedly installed with a telescopic shell (203), the inside of which is inserted with a bolt (204), one end of which is slidingly installed with an extension end (205), the inside of which is provided with a spring (206), and the other end away from the extension end (205) is fixedly and threadedly installed with a rear cover (207).
2. A switch according to claim 1, characterised in that The inside of the contact disc (105) is provided with a clamping groove, and the clamping groove of the contact disc (105) is fixedly installed with a power supply plate, and the outer wall of the contact (107) is electrically installed with the power supply plate.
3. A switch according to claim 1, characterised in that One end of the contact disc (105) is fixedly installed with a rotating rod, and the rotating rod of the contact disc (105) is rotatably installed on one side of the shell (103), and the other end away from the contact disc (105) is fixedly installed on the handle (102).
4. A switch according to claim 1, characterized in that The inside of the shell (103) is provided with a threaded hole, and the shell (103) is threadedly installed with the bolt (204) through the threaded hole.
5. A switch according to claim 1, characterized in that One end of the telescopic shell (203) is provided with a through-hole sliding groove, and the extension end (205) is slidingly installed with the telescopic shell (203) through the through-hole sliding groove.
6. A switch according to claim 1, wherein One end of the spring (206) is tightly and abuttingly installed with the extension end (205), and the other end is tightly and abuttingly installed with the rear cover (207).
7. A switch according to claim 1, wherein One end of the extension end (205) is fixedly installed with a limiting plate, and the limiting plate of the extension end (205) is slidingly installed in the inside of the telescopic shell (203).