Dust-proof transfer switch

Abstract

The present invention relates to the field of switches, and more particularly to a transfer switch with a dustproof function. The transfer switch comprises a mounting cover and a rotating shaft that rotates through the mounting cover. The rotating shaft is provided with a sealing assembly for sealing an assembly gap between the rotating shaft and the mounting cover. The provision of the sealing assembly in this application helps reduce the possibility of external dust entering the transfer switch through the assembly gap and affecting its normal operation.

Description

Technical Field

[0001] The present invention relates to the field of switches, in particular to a transfer switch with a dustproof function. Background Art

[0002] A transfer switch is a low-voltage switch that switches multiple circuits. Multiple moving contacts are welded on the shaft. When the shaft rotates, the moving contacts connect or disconnect with the static contacts in turn, switching the circuit from one set of connections to another set of connected electrical appliances.

[0003] The transfer switch in the related art, refer to Figure 1 , including a mounting cover plate 2 and a rotating shaft 1, the rotating shaft 1 rotates through the mounting cover plate 2, and the rotating shaft 1 is connected to the handle.

[0004] An assembly gap is inevitably present between the mounting cover and the rotating shaft, and external dust may pass through the assembly gap and enter the interior of the transfer switch, thereby affecting the normal use of the transfer switch, which is an obvious deficiency. Summary of the Invention

[0005] In order to improve the dustproof performance of the transfer switch, the present application provides a transfer switch with a dustproof function.

[0006] The present application provides a transfer switch with dustproof function adopting the following technical solution:

[0007] A transfer switch with a dustproof function comprises a mounting cover and a rotating shaft rotating through the mounting cover. The rotating shaft is provided with a sealing component for sealing an assembly gap between the rotating shaft and the mounting cover.

[0008] By adopting the above technical solution, the sealing component seals the assembly gap between the rotating shaft and the mounting cover, thereby reducing the possibility of external dust entering the interior of the transfer switch through the assembly gap and affecting its normal use, which is beneficial to improving the dustproof performance of the transfer switch.

[0009] Optionally, the sealing assembly includes a sealing gasket rotatably sleeved on the rotating shaft, and the sealing gasket is in close contact with the rotating shaft and the sealing gasket is in close contact with the mounting cover.

[0010] By adopting the above technical solution, the sealing gasket is kept in close contact with the rotating shaft and the installation cover, thereby reducing the possibility of dust entering the interior of the transfer switch through the assembly gap.

[0011] Optionally, an extension is circumferentially provided at the edge of the sealing gasket, and the extension is slidably sleeved on the circumferential side wall of the installation cover plate and is tightly attached to the side wall.

[0012] By adopting the above technical solution, the setting of the extension is conducive to improving the sealing performance between the sealing gasket and the installation cover plate, and is conducive to reducing the possibility of dust entering between the sealing gasket and the installation cover plate.

[0013] Optionally, the mounting cover includes a base and a cover, a receiving cavity is opened on a side of the base opposite to the cover, the rotating shaft rotates through the receiving cavity, and the sealing assembly includes a clean soft glue for filling the receiving cavity.

[0014] By adopting the above technical solution, since the cleaning soft glue is fluid, after standing for a period of time, it can wrap the position of the outer wall of the rotating shaft relative to the accommodating cavity under the action of gravity. When the rotating shaft is stationary and rotating, the cleaning soft glue can remain in close contact with the rotating shaft, thereby filling the assembly gap between the rotating shaft and the mounting cover from the inside of the mounting cover, thereby improving the dustproof performance of the switching switch.

[0015] Optionally, the sealing assembly further comprises a limiting ring fixedly sleeved on the rotating shaft, and the limiting ring is in close contact with the sealing cover.

[0016] By adopting the above technical solution, the setting of the limiting ring limits the cleaning soft glue, reducing the possibility that the cleaning soft glue flows into the transfer switch through the assembly gap on one side of the cover, thereby affecting the normal use of the transfer switch.

[0017] Optionally, the limiting ring is elastic and is arranged in a trumpet shape along the direction from the base to the cover, the end of the limiting ring with a larger diameter abuts against the cover, and the shaft of the rotating shaft located in the accommodating cavity is provided with a step and the step abuts against the bottom wall of the accommodating cavity.

[0018] By adopting the above technical solution, when the cover is connected to the base, the step contacts the bottom wall of the accommodating cavity, and at the same time the limit ring is compressed to produce expansion deformation, thereby improving the sealing performance between the limit ring and the cover, and further reducing the possibility of the cleaning soft glue flowing into the interior of the switching switch through the assembly gap.

[0019] Optionally, the base and the cover are detachably connected.

[0020] By adopting the above technical solution, when the cleaning soft rubber is used for a long time and contains a large amount of dust, workers can disassemble the base and the cover to replace the cleaning soft rubber, thereby improving the dust-proof effect.

[0021] Optionally, a plurality of stirring wheels are provided in the accommodating cavity, and the plurality of stirring wheels are circumferentially arranged around the axis of the rotating shaft. The radius of the stirring wheel is equal to the distance between the axis of the stirring wheel and the axis of the rotating shaft, and the stirring wheel rotates to pass through the base.

[0022] By adopting the above technical solution, workers use tools to rotate the stirring wheel from the outside, and the stirring wheel can stir the cleaning soft glue around the rotating shaft, so that the clean cleaning soft glue at other positions in the accommodating cavity can flow close to the rotating shaft to achieve dust attachment.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The sealing assembly seals the assembly gap between the rotating shaft and the mounting cover, thereby reducing the possibility of external dust entering the transfer switch through the assembly gap and affecting its normal use, which is beneficial to improving the dustproof performance of the transfer switch;

[0025] 2. Because the cleaning soft glue is fluid, after standing still for a period of time, it can wrap the position of the outer wall of the shaft relative to the accommodating cavity under the action of gravity. When the shaft is stationary or rotating, the cleaning soft glue can remain in close contact with the shaft, thereby filling the assembly gap between the shaft and the mounting cover from the inside of the mounting cover, thereby improving the dustproof performance of the transfer switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an exploded diagram of the related technology.

[0027] Figure 2 It is an exploded diagram of the connection relationship between the installation cover, sealing gasket and rotating shaft in Example 1 of the present application.

[0028] Figure 3 It is an exploded view of the connection relationship between the clamping block and the spring seat in Example 1 of the present application.

[0029] Figure 4 This is an exploded diagram of the connection relationship between the cleaning soft glue, the base, and the limiting ring in Example 2 of the present application.

[0030] Figure 5 It is a cross-sectional view of the connection relationship between the base, the limiting ring and the stirring wheel in Example 2 of the present application.

[0031] Explanation of the accompanying reference numerals: 1. rotating shaft; 2. mounting cover; 21. sealing cover; 22. base; 221. accommodating chamber; 3. sealing gasket; 4. edge extension; 5. cleaning soft rubber; 6. limiting ring; 7. step; 8. stirring wheel; 9. slot; 10. spring seat; 11. block. DETAILED DESCRIPTION

[0032] The following is combined with Figure 2-5 This application is described in further detail.

[0033] An embodiment of the present application discloses a transfer switch with a dustproof function.

[0034] Example 1

[0035] Reference Figure 2 The transfer switch with dustproof function includes a mounting cover 2 and a rotating shaft 1 that rotates through the mounting cover 2. A sealing component is provided on the rotating shaft 1, which is used to seal the assembly gap between the rotating shaft 1 and the mounting cover 2.

[0036] Reference Figure 2 The sealing assembly includes a sealing gasket 3 that is rotatably sleeved on the rotating shaft 1. The sealing gasket 3 is in close contact with the rotating shaft 1 and the sealing gasket 3 is in close contact with the mounting cover 2.

[0037] By providing the sealing gasket 3, the gap between the mounting cover 2 and the rotating shaft 1 is sealed, thereby reducing the possibility of external dust entering the transfer switch through the assembly gap and affecting its normal use.

[0038] A certain number of bolts are required for the installation of the various parts of the transfer switch. In this application, the bolts on the mounting cover 2 are all installed in a built-in manner, so that the sealing gasket 3 can seal the bolt connection position.

[0039] Reference Figure 2 and Figure 3 The edge of the sealing gasket 3 is integrally formed with a ring-shaped extension 4 in the circumferential direction. The extension 4 is slidably sleeved on the circumferential side wall of the mounting cover 2 and is tightly attached to it. The setting of the extension 4 improves the sealing performance between the sealing gasket 3 and the mounting cover 2, and further reduces the possibility of dust entering between the sealing gasket 3 and the mounting cover 2.

[0040] There are multiple springs in the transfer switch. After long-term use, the springs will gradually age and may need to be replaced. However, when replacing the springs, the transfer switch needs to be disassembled as a whole, which makes the replacement process cumbersome.

[0041] To this end, the spring installation position is set to an open shape, and a slot 9 is opened on the two opposite outer walls. A spring seat 10 with a concave cross-section is provided on the outside of the switch, and a card block 11 for snapping into the corresponding slot 9 is integrally formed on the two opposite inner walls of the spring seat 10.

[0042] Reference Figure 2 and Figure 3 Since the block 11 and the spring seat 10 are both made of plastic, they can be deformed. The worker first puts the spring into the installation position, and then manually presses the spring seat 10 on the opening of the switch relative to the spring. The spring seat 10 is deformed, so that the block 11 is stuck in the slot 9.

[0043] The above method is not only conducive to facilitating the disassembly and assembly of the spring, but also has better sealing performance, and external dust is not easy to enter the transfer switch.

[0044] The implementation principle of Example 1 is: a sealing gasket is provided to be in close contact with the mounting cover 2 and the rotating shaft 1 at the same time, thereby reducing the possibility of external dust entering the interior of the transfer switch through the assembly gap and affecting its normal use, which is beneficial to improving the dustproof performance of the transfer switch.

[0045] Example 2

[0046] Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the mounting cover plate 2 includes a base 22 and a cover 21 bolted to each other, a receiving cavity 221 is opened on the side of the base 22 opposite to the cover 21, the rotating shaft 1 rotates through the receiving cavity 221, and the sealing assembly includes a cleaning soft glue 5 for filling the receiving cavity 221.

[0047] Reference Figure 3 and Figure 4 The worker first sets the base 22 and the cover 21 onto the rotating shaft 1, then puts the cleaning soft glue 5 into the accommodating cavity 221, and finally bolts the base 22 and the cover 21 together.

[0048] Since the cleaning soft glue 5 is fluid, after the above-mentioned installation cover 2 is left to stand for a period of time, the cleaning soft glue 5 can wrap the outer wall of the rotating shaft 1 relative to the installation cover 2 under the action of gravity, thereby sealing the assembly gap from the inside of the installation cover 2, and it is difficult for external dust to pass through the assembly gap and enter the conversion switch.

[0049] At the same time, since the cleaning soft glue 5 itself has a certain degree of integrity, when the assembly gap between the installation cover 2 and the rotating shaft 1 is small, the cleaning soft glue 5 is not easy to pass through the assembly gap.

[0050] Reference Figure 3 and Figure 4 The sealing assembly also includes a limit ring 6 fixedly mounted on the rotating shaft 1. The limit ring 6 is in close contact with the cover 21. The setting of the limit ring 6 has a shielding effect on the assembly gap, reducing the possibility of the cleaning soft glue 5 entering the interior of the transfer switch through the assembly gap on one side of the cover 21.

[0051] Reference Figure 3 and Figure 4 The limiting ring 6 is elastic and is arranged in a trumpet shape along the direction from the base 22 to the cover 21. The end of the limiting ring 6 with a larger diameter contacts the cover 21. The shaft 1 is located in the accommodating cavity 221 and is provided with a step 7, and the step 7 contacts the bottom wall of the accommodating cavity 221.

[0052] When the worker bolts the cover 21 and the base 22 together, the step 7 supports the bottom wall of the accommodating cavity 221, and the end of the limiting ring 6 with a larger diameter contacts the cover 21 and expands and deforms, thereby improving the seal between the limiting ring 6 and the cover 21 and further reducing the possibility of the cleaning soft glue 5 in the accommodating cavity 221 flowing into the interior of the switching switch through the assembly gap.

[0053] Reference Figure 3 and Figure 4 There are also multiple stirring wheels 8 in the accommodating cavity 221. The multiple stirring wheels 8 are evenly arranged around the axis of the rotating shaft 1. The radius of the stirring wheel 8 is equal to the distance between the axis of the stirring wheel 8 and the axis of the rotating shaft 1. The stirring wheel 8 rotates out of the base 22.

[0054] After the above-mentioned sealing assembly has been used for a certain period of time, the worker uses a tool to rotate the stirring wheel 8 from the outside. The stirring wheel 8 can stir the cleaning soft glue 5 around the rotating shaft 1, so that the clean cleaning soft glue 5 at other positions in the accommodating cavity 221 can flow close to the rotating shaft 1 to achieve dust adhesion.

[0055] Reference Figure 3 and Figure 4 When the cleaning soft glue 5 has been used for a long time, the worker can disassemble the base 22 and the cover 21 and replace the cleaning soft glue 5.

[0056] The implementation principle of Example 2 is as follows: a cleaning soft glue 5 is placed in the accommodating cavity 221. The cleaning soft glue 5 is fluid, so under the action of gravity, it can wrap the outer wall of the rotating shaft 1 located in the accommodating cavity 221, thereby filling the assembly gap between the rotating shaft 1 and the mounting cover 2. When the rotating shaft 1 is stationary and rotating, the cleaning soft glue 5 can wrap the outer wall of the rotating shaft 1, thereby reducing the possibility of external dust entering the interior of the transfer switch through the assembly gap, which is beneficial to improving the dustproof effect of the transfer switch.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A transfer switch with a dustproof function, comprising a mounting cover (2) and a rotating shaft (1) that rotates through the mounting cover (2), characterized in that: The rotating shaft (1) is provided with a sealing assembly for sealing the assembly gap between the rotating shaft (1) and the installation cover (2); the installation cover (2) comprises a base (22) and a cover (21); a receiving cavity (221) is provided on a side of the base (22) opposite to the cover (21); the rotating shaft (1) rotates through the receiving cavity (221); the sealing assembly comprises a limiting ring (6) and a cleaning soft glue (5); the cleaning soft glue (5) is used to fill the receiving cavity (221); the limiting ring (6) is fixedly sleeved on the rotating shaft (1) and is in close contact with the cover (21); the limiting ring (6) is elastic and extends along the base (22) The direction to the cover (21) is arranged in a trumpet shape, the end with a larger diameter of the limiting ring (6) contacts the cover (21), the shaft body of the rotating shaft (1) located in the accommodating cavity (221) is provided with a step (7), and the step (7) contacts the bottom wall of the accommodating cavity (221), the base (22) and the cover (21) are detachably connected, and the accommodating cavity (221) is further provided with a plurality of stirring wheels (8), the plurality of stirring wheels (8) are circumferentially arranged around the axis of the rotating shaft (1), the radius of the stirring wheel (8) is equal to the distance between the axis of the stirring wheel (8) and the axis of the rotating shaft (1), and the stirring wheel (8) rotates to pass through the base (22).

2. The transfer switch with dustproof function according to claim 1, characterized in that: The sealing assembly comprises a sealing gasket (3) rotatably sleeved on the rotating shaft (1), wherein the sealing gasket (3) and the rotating shaft (1) are in close contact with each other, as well as with the mounting cover plate (2).

3. The transfer switch with dustproof function according to claim 2, characterized in that: An extension (4) is circumferentially provided at the edge of the sealing gasket (3), and the extension (4) is slidably sleeved on the circumferential side wall of the installation cover plate (2) and is in close contact with the side wall.

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