Push switch and device using same

Abstract

The invention provides a push switch and a device using the push switch. A push switch includes: a moving member configured to be actuatable to move linearly between a first position and a second position to switch an on state and an off state of the push switch; a sleeve including a side wall and an end portion, the side wall and the end portion surrounding a portion of the moving member, the sleeve configured to be attached to and co-move with the moving member; a first housing portion configured to be positioned outside the sleeve; a first locking member configured to be detachably connected to the first housing portion; the sealing ring is configured to be clamped between the first shell part and the first locking component, and the sealing ring is further configured to be in contact with the side wall of the sleeve when the sleeve moves. The push switch has a high liquid protection level.

Description

Technical Field

[0001] The present disclosure relates to a push switch, in particular to a push switch having an arrangement providing a high level of liquid protection and a device using the push switch. Background Art

[0002] The push switch may provide a button that can be pressed by a user to switch the on state and the off state of the push switch. Considering the humidity of the potential use environment of the push switch and the possibility of exposure to liquid, the push switch may be equipped with a sealing ring to prevent liquid (such as water) from invading the internal cavity of the push switch from the outside, for example, in particular to prevent liquid from entering the cavity where the circuit or electrical components of the push switch are located. In the case where the push switch may be exposed to liquid, it is particularly critical to adopt an arrangement that can provide a higher level of liquid protection.

[0003] There are already sealing rings that are arranged on the button of a push switch and move with the button when the button is actuated. Such sealing rings undergo deformation during the process of the button being pressed, actuated and reset. Compared with applying the sealing ring to seal between static components, the expected service life of the same sealing ring is adversely affected and reduced due to such deformation. In addition, since the sealing ring always follows the movement of the button and undergoes deformation during the movement of the button, the deformed sealing ring may have difficulty in achieving the expected liquid protection level, which in turn leads to possible failure of the push switch. Generally speaking, failure of the push switch is unacceptable for the device using the push switch. Summary of the invention

[0004] In order to at least partially solve the above and other possible problems, the present disclosure provides a push switch and a switch cabinet and an electrical device using the push switch.

[0005] According to a first aspect, a push switch is provided. The push switch comprises a moving member, a sleeve, a first housing portion, a first locking component and a sealing ring. The moving member is configured to be actuated to move in a straight line between a first position and a second position, thereby switching the on state and the off state of the push switch. The sleeve comprises a side wall and an end portion. The side wall and the end portion surround a portion of the moving member. The sleeve is configured to be attached to the moving member and move together with the moving member. The first housing portion is configured to be positioned outside the sleeve. The first locking component is configured to be detachably connected to the first housing portion. The sealing ring is configured to be clamped between the first housing portion and the first locking component, and to keep contacting the side wall of the sleeve when the sleeve moves.

[0006] Such a push switch has a sealing arrangement that provides a high level of protection against liquids. In addition, the sealing arrangement can be used to make the deformation of the sealing ring smaller when the moving component and the sleeve move, compared to when the moving component and the sleeve remain stationary, for example, the deformation amplitude can be significantly reduced or reduced to zero. When the sealing ring is used in a push switch, this is particularly useful for increasing the service life of the sealing ring.

[0007] In addition, some of the multiple components included in the push switch (such as the components used in the aforementioned sealing arrangement, for example, the first housing portion, the sealing ring, the first locking component, and the sleeve) can be assembled to form a sealing arrangement according to the first aspect. This implementation allows these components to be replaced with corresponding components (some but not all) of the existing push switch, so that the sealing arrangement can be incorporated into the existing push switch. These corresponding components include, for example: a sleeve to be pressed by a user, a housing portion surrounding the sleeve, and a sealing ring fixed to the sleeve. The remaining components of the push switch can remain unchanged. Therefore, the components of the existing push switch can also be directly adjusted to utilize the sealing arrangement provided in this article, so that the adjusted push switch can also have a high liquid protection level.

[0008] According to one or more embodiments, the sealing ring includes a fixing portion and an extension portion extending from the fixing portion. The fixing portion is arranged between the first housing portion and the first locking component and is clamped by the first housing portion and the first locking component. The extension portion includes a contact portion that contacts the side wall of the sleeve, and the size of the contact area of ​​the contact portion and the side wall is uniform in the circumferential direction of the side wall.

[0009] According to one or more embodiments, the extension portion may be configured to extend from the fixing portion at an angle so that the sealing ring has a groove with a V-shaped cross-section. In this implementation, the sealing ring can withstand greater extrusion stress without failure, and the contact portion of the sealing ring can be designed to have a larger size, so that the size of the contact area between the contact portion and the side wall can be increased to further improve the reliability of liquid protection.

[0010] In such an embodiment, the sealing ring can also be arranged so that the groove communicates with the space of the external environment of the push switch. In use, the sealing ring can be more closely against the side wall of the sleeve. This is particularly beneficial for improving the liquid protection level of the push switch.

[0011] According to one or more embodiments, the first housing portion includes an internal thread disposed on the inner side of the first housing portion. The first locking member includes an annular member having an external thread disposed on the outer side of the annular member and configured to be threadedly connected to the first housing portion and clamp the sealing ring through the external thread and the internal thread. In this implementation, the annular member can be continuously tightened onto the first housing portion to position and clamp the sealing ring. In this way, the sealing ring can be assembled between the first housing portion and the first locking member and prevented from being disengaged from between the first housing portion and the first locking member.

[0012] According to one or more embodiments, the contact portion comprises a plurality of layers, each of the plurality of layers contacts a corresponding portion of the side wall at a different position on the side wall. In this way, a multi-layer seal can be formed on the side wall of the sleeve. If some of the plurality of layers fail, the other layers can still function to ensure a high level of liquid protection.

[0013] According to one or more embodiments, the first housing part comprises a hollow cylinder. Such an implementation is particularly advantageous for manufacturing and assembly.

[0014] According to a second aspect, a switch cabinet is provided, comprising the push switch according to the first aspect.

[0015] According to a third aspect, an electrical device is provided, comprising the push switch of the first aspect.

[0016] These and other matters will become readily understood and elucidated through reference to the drawings and description of several embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other purposes, features and advantages of the exemplary embodiments disclosed herein will become more easily understood through the following detailed description with reference to the accompanying drawings. In the accompanying drawings, several exemplary embodiments disclosed herein are shown by way of example and not limitation, in which:

[0018] Figure 1 is an example of a push switch provided according to the present disclosure, a cross-sectional view of the push switch is shown on the left side of line BB, and a stereoscopic view of the push switch is shown on the right side of line BB;

[0019] Figure 2 yes Figure 1 An enlarged view of a cross-sectional view of the push switch to the left of line BB is shown;

[0020] Figure 3 yes Figure 1 A partial cross-sectional view of the push switch taken along line AA is shown, wherein the push switch is in a first operating state;

[0021] Figure 4 yes Figure 1 A partial cross-sectional view of the push switch taken along line AA is shown, wherein the push switch is in a second operating state;

[0022] Figure 5 An exemplary sealing ring is shown;

[0023] Figure 6 An exemplary first housing portion is shown, wherein a first locking member has been mounted on the first housing portion; and

[0024] Figure 7 An exemplary sleeve is shown.

[0025] Throughout the drawings, the same or corresponding reference numerals designate the same or corresponding parts. DETAILED DESCRIPTION

[0026] The subject matter described herein will now be discussed with reference to several example embodiments. These embodiments are discussed only to enable those skilled in the art to better understand and thereby implement the subject matter described herein, and do not imply any limitation on the scope of the subject matter.

[0027] The terms "including" or "comprising" and variations thereof should be read as open-ended terms meaning "including but not limited to." The term "or" should be read as "and / or," unless the context clearly indicates otherwise. The term "based on" should be read as "based, at least in part, on." The terms "one embodiment" and "an embodiment" should be read as "at least one embodiment." The term "another embodiment" should be read as "at least one other embodiment."

[0028] Unless otherwise specified or limited, the terms "connected" and "coupled" and variations thereof are used broadly and encompass both direct and indirect connections and couplings. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings. In the following description, like reference numerals and numbers are used to describe the same, similar or corresponding parts in the drawings. Other explicit and implicit definitions may be included below.

[0029] A switch is a control device in a typical electrical device or switch cabinet. A push switch is arranged in a position accessible to a user in the electrical device or switch cabinet to allow the user to operate the push switch. Since the push switch needs to be accessible to the user for operation, a common arrangement of the push switch is to arrange the push switch at the interface between the electrical device or switch cabinet and the external environment, so that the user only needs to reach the vicinity of the electrical device to reach the position of the push switch by hand and switch the on state and the off state of the push switch as needed.

[0030] In view of possible external environments, such as high temperature and humid environments, it is particularly practical to configure the push switch to include a sealing arrangement so that the push switch has the ability to prevent liquid intrusion. For example, using a sealing arrangement such as a sealing ring can ensure that the push switch still operates normally when exposed to a high temperature and humid environment. The electrical device or switch cabinet including the push switch will not be adversely affected by the failure of the push switch due to liquid intrusion.

[0031] A conventional arrangement of the sealing ring is to fix the sealing ring to the movable part of the push switch and abut against the housing of the push switch. In use, the sealing ring will move and / or deform following the movement of the movable part. However, the deformed sealing ring may be difficult to achieve the expected liquid protection level, which in turn leads to possible failure of the push switch. Another conventional arrangement of the sealing ring is to arrange the sealing ring between the movable part and the housing of the push switch, and the sealing ring acts in a manner similar to a gasket. In other words, the sealing ring is not fixed on either the movable part or the housing, but is simply placed between the movable part and the housing. In operation, the movable part squeezes and releases the stress applied to the sealing ring, so that the sealing ring deforms within a small range but still completes the liquid seal. When the movable part of the push switch has a small stroke so that the deformation of the sealing ring during operation is also small enough, it is possible to consider adopting such an arrangement of the sealing ring. However, for a push switch including a movable part with a large stroke, this sealing arrangement will not be considered.

[0032] In addition, the above-mentioned sealing arrangement has the disadvantage that it is difficult to achieve liquid protection for the push switch in a high temperature and humid environment.

[0033] The International Electrotechnical Commission (IEC) has drafted the IEC 60529 standard, the IP (Ingress Protection) protection level system, to evaluate the protection level of electrical equipment housings against foreign body intrusion. For a specific electrical device, the liquid protection level capability of the electrical device can be divided into a certain level in the range of level 0-level 9, and the liquid protection level it possesses can be indicated by a certain symbol in the range of IPX0 to IPX9. The present disclosure describes the corresponding liquid protection level capability of the push switch in conjunction with the liquid protection level.

[0034] The liquid protection level of the push switch with the above-mentioned sealing arrangement was evaluated according to the IEC 60529 standard, and it was found that the liquid protection level of such a push switch is difficult to reach IPX5 or above.

[0035] The present disclosure provides a push switch, which has a sealing arrangement that can achieve a high liquid protection level and can be incorporated into an existing push switch design. In addition, according to existing test data, the sealing arrangement can significantly improve the expected service life of the sealing ring. In a set of control experiments, keeping other factors the same, Test 1 adopts a conventional sealing ring arrangement, which fixedly connects the sealing ring to the movable part of the push switch and abuts against the housing of the push switch. In use, the sealing ring will move up and down following the reciprocating motion of the movable part and / or during part of the reciprocating motion of the movable part, the sealing ring or a part of the sealing ring undergoes forward and backward deformation accordingly. In contrast, in Test 2, a sealing arrangement of a push switch according to the present disclosure is adopted. It is found that the service life of the sealing ring in Test 2 is improved by at least six times compared to the sealing ring in Test 1. This can be at least partially attributed to the reduction of the alternating deformation of the sealing ring. In addition, it is also found that the liquid protection level of the push switch of the present disclosure can be as high as IPX7, IPX8, and IPX9K.

[0036] The following combination Figure 1-Figure 7 To describe a push switch including a sealing arrangement according to the present disclosure. It should be noted that the following examples are only some examples obtained according to the content of the present disclosure. These examples can also be adjusted and changed according to the implementation described below, and these changes and adjustments should also be considered to be included in the scope of the present disclosure. In addition, implementations that are not specifically described here but can be derived according to the spirit and ideas of the present disclosure should also be considered to constitute part of the content of the present disclosure.

[0037] Figure 1 is an example of a push switch provided according to the present disclosure, a cross-sectional view of the push switch is shown on the left side of line BB, and a stereoscopic view of the push switch is shown on the right side of line BB. Figure 1 As shown, the push switch 100 may include a moving member 1 , a sleeve 2 , a first housing portion 3 , a first locking component 4 , a sealing ring 5 and a second housing portion 6 .

[0038] The moving member 1 is configured to be actuated to move in a first position P1 (eg Figure 3 as shown) and a second position P2 (as shown Figure 4 The push switch 100 is moved in a straight line between the moving member 1 and the moving member 1, thereby switching the on state and the off state of the push switch 100. The implementation of the moving member 1 and the control of the on state and the off state of the push switch by the moving member 1 in the prior art can be used and applied here. In order to avoid confusion with the contents of the present disclosure described herein, the moving member 1, the control of the push switch 100 by the moving member 1, and the circuit components of the push switch 100 (not shown, which are generally arranged in the chamber 60 of the second housing part 6) are not described in detail.

[0039] The sleeve 2 includes a side wall 21 and an end portion 22. The sleeve 2 can be attached to the moving member 1. Specifically, the side wall 21 or the end portion 22 of the sleeve 2 or both are connected to the moving member 1. Thereby, the sleeve 2 and the moving member 1 are integrated together, and the sleeve 2 moves with the moving member 1 during the movement of the moving member 1.

[0040] The sealing ring 5 is configured to be clamped between the first housing portion 3 and the first locking component 4. The cooperation between the first housing portion 3 and the first locking component 4 can be utilized to enable a portion of the sealing ring to be clamped between the first housing portion 3 and the first locking component 4. As an example of implementation of clamping the sealing ring 5, the first housing portion 3 includes an internal thread arranged on the inner side of the first housing portion 3. The first locking component 4 includes an annular component. The annular component has an external thread arranged on the outer side of the annular component. The annular component can be configured to be threadedly connected to the first housing portion 3 by the external thread and the internal thread and to clamp a portion of the sealing ring 5. In other examples, the first locking component 4 can be configured to be detachably connected to the first housing portion 3 and to clamp the sealing ring 5 in other ways.

[0041] The sealing ring 5 is also configured to keep in contact with the side wall 21 of the sleeve 2 when the sleeve 2 moves. Specifically, in such an embodiment, a contact area of ​​a certain size is formed between the sealing ring 5 and the side wall 21. In one example, when the height of the sealing ring 5 is 7 mm, the length of the contact area along the length direction of the side wall 21 of the sleeve 2 is 2 mm. When the sleeve 2 moves following the moving component, the side wall 21 of the sleeve 2 moves relative to the sealing ring 5. Although the sealing ring 5 always keeps in contact with the side wall 21, the movement of the side wall 21 does not cause significant deformation of the sealing ring 5. This makes the size of the contact area between the sealing ring 5 and the side wall 21 when the sleeve 2 moves slightly reduced or unchanged compared to the size of the contact area between the sealing ring 5 and the side wall 21 when the sleeve 2 remains stationary. This is particularly conducive to achieving a high liquid protection level and ensuring the consistency of the liquid protection level.

[0042] In the implementation of the sealing arrangement of the push switch 100 provided by the present disclosure, the sleeve 2, the first shell part 3, the first locking component 4, and the sealing ring 5 provided by the present disclosure can be replaced with the corresponding components of the push switch existing in the prior art, so that the existing push switch can also have the above-mentioned high liquid protection level.

[0043] Figure 2 yes Figure 1 An enlarged view of the cross-sectional view of the push switch to the left of line BB is shown. Figure 2As shown, the sealing ring 5 may include a fixing portion 51 and an extension portion 52 extending from the fixing portion 51. The fixing portion 51 is arranged between the first housing portion 3 and the first locking member 4 and is clamped by the first housing portion 3 and the first locking member 4. The extension portion 52 includes a contact portion 53 that is at least partially in contact with the side wall 21. In the example shown, the contact portion 53 is configured to contact the side wall 21 of the sleeve 2 at a position near the joining line that surrounds the side wall 21 and is located at the same level as the joining point 81. In an alternative example, the contact portion 53 can also be configured to contact the side wall 21 at a position that is a predetermined distance above the level of the joining point 81. In this way, a contact area of ​​a certain size can be formed between the contact portion 53 and the side wall 21 of the sleeve 2.

[0044] In one embodiment, the contact portion 53 further includes a branch portion (not shown). The branch portion extends downward beyond the level of the junction 81 to a predetermined distance, so that the contact portion 53 has a T-shaped cross-section. In use, the branch portion can also be configured to contact a portion of the side wall 21 at a level below the junction 81, thereby forming a larger contact area between the contact portion 53 and the side wall 21 of the sleeve 2. In one example, when the height of the sealing ring 5 is 7 mm, the length of the contact area in the length direction of the side wall 21 of the sleeve 2 is 3 mm.

[0045] Additionally or alternatively, the contact portion 53 includes a plurality of layers. Each of the plurality of layers contacts a corresponding portion of the side wall 21 at a different position on the side wall 21. In one example, the plurality of layers of the contact portion 53 each extend in a direction toward the center of the sealing ring 5 at different positions along the length of the contact portion 53. Alternatively, the plurality of layers of the contact portion 53 each may also extend at an angle relative to the direction pointing to the center of the sealing ring 5 at different positions along the length of the contact portion 53. In use, each of the plurality of layers will be pressed against the side wall 21 of the sleeve 2 to contact a corresponding portion of the side wall 21. The plurality of layers of the contact portion 53 are arranged so that the contact area between the contact portion 53 and the side wall 21 of the sleeve 2 can be increased. Each of the plurality of layers may have a thickness that is smaller than the thickness of the contact portion 53, which enables an increased contact area to be achieved without significantly increasing the volume of the sealing ring 5. In addition, a multi-layer seal can be formed on the side wall of the sleeve by this design. If some of the plurality of layers fail, the other layers can still serve to ensure a high level of liquid protection. It should be noted that the number of sealing rings 5 ​​used in the previous and following embodiments can also be increased (e.g., two, three) to achieve similar effects. The embodiments of multiple sealing rings 5 ​​can also be combined in these embodiments. For the sake of brevity, they will not be described in detail herein.

[0046] In addition, as an alternative or supplement to the above solution, making full use of the space between the sleeve 2 and the first housing portion 3 to arrange the sealing ring 5 can further improve the sealing effect. In one embodiment, the extension portion 52 can be configured to extend from the fixing portion 51 at an angle, so that the sealing ring 5 has a groove with a V-shaped cross-section, such as Figure 2 As shown.

[0047] The first branch of the V-shape close to the fixing portion 51 can be configured to abut against one side of the first locking component, and the second branch of the V-shape connected to the first branch can have a longer length relative to the first branch. In this implementation, the sealing ring 5 can withstand greater extrusion stress without failure, and the contact portion 53 of the sealing ring 5 can be allowed to be designed to have a larger size. In use, the contact portion 53 will have a larger contact area with the side wall 21 of the sleeve 2. This is particularly advantageous when combined with the above scheme of increasing the size of the contact area between the contact portion 53 and the side wall 21 of the sleeve 2. In one example, when the height of the sealing ring 5 is 7 mm, the length of the contact area in the length direction of the side wall 21 of the sleeve 2 is 3.5 mm.

[0048] Continue to refer Figure 3 and Figure 4 Give a description. Figure 3 yes Figure 1 A partial cross-sectional view of the push switch 100 taken along line AA is shown, wherein the push switch 100 is in a first operating state; Figure 4 yes Figure 1 The partial cross-sectional view of the push switch 100 taken along line AA is shown, wherein the push switch 100 is in the second operating state. In the embodiment shown, the first operating state and the second operating state correspond to the on state and the off state of the push switch 100, respectively. In another embodiment, the first operating state and the second operating state may correspond to the off state and the on state of the push switch 100, respectively. It should be noted that in both of the above embodiments, the above description of Figure 1-Figure 2 The sealing arrangement described.

[0049] like Figure 3 and Figure 4As shown, when the sleeve 2 moves from the first position P1 toward the second position P2 or from the second position P2 toward the first position P1, the joint points 81, 82 shown with the marks "81, 82" will move. For example, as shown in the figure, when the sleeve 2 moves from the first position P1 to the second position P2, the joint points 81, 82 will move downward, and new joint points marked as 81', 82' will appear at the original position of the joint points 81, 82 and the sealing ring is still in contact with the side wall 21 of the sleeve 2 at this position. In other words, during the movement of the sleeve 2, the shape of the sealing ring 5 can always remain unchanged or not significantly changed. This sealing arrangement can ensure that the push switch 100 has a consistent high liquid protection level during use.

[0050] In one embodiment, when the sealing ring 5 having a groove with a V-shaped cross section is used, the sealing ring 5 can be arranged so that the groove communicates with the space S of the external environment of the push switch 100. This is practical for preventing the pressure fluid from entering the inside of the push switch 100 by using the sealing ring 5, because the impact of the pressure fluid on the sealing ring 5 will further strengthen the contact between the sealing ring 5 and the side wall of the sleeve 2.

[0051] Additionally or alternatively, the end portion of the sleeve 2 may include a flange, as shown in the figure. The flange will also Figure 7 The size of the flange can be configured to reduce the gap between the flange and the first housing portion 3, so that the fluid flow entering the space S can be reduced. This can reduce the impact of excessive fluid flow on the sealing ring 5, thereby allowing the thickness of the sealing ring 5, especially the thickness of the contact portion 53, to be reduced while meeting the use requirements of the push switch 100.

[0052] Figure 5 An exemplary sealing ring is shown. Figure 5 More clearly shows the Figure 1-Figure 4 The structure of the sealing ring 5 described. Figure 5 As shown in FIG. 1 , the sealing ring 5 has a groove 50 with a V-shaped cross section. The sealing ring 5 further includes a fixing portion 51 , an extending portion 52 and a contact portion 53 .

[0053] Furthermore, the material forming the seal ring 5 may be any one selected from the group consisting of natural rubber, silicone rubber, ethylene-propylene rubber, nitrile rubber, fluorinated rubber, chloroprene rubber, and polyurethane rubber.

[0054] Figure 6 An exemplary first housing part 3 is shown. Figure 5 More clearly shows the Figure 1-Figure 4 The structure of the first housing part 3 is described. Figure 6In the embodiment, the first housing part 3 is configured to include a hollow cylinder. In this example, the first housing part 3 includes an internal thread (partially visible) arranged on the inner surface. The first housing part 3 forms a cavity 30 on its inner side. The cavity 30 is used to at least partially receive a sleeve, such as the above Figure 1-Figure 4 and the following Figure 7 In other examples, the first housing portion 3 may also be designed in other shapes. These shapes may also be different from the Figure 6 The first housing part 3 shown has the same function.

[0055] Figure 7 An exemplary sleeve 2 is shown. The end portion 22 of the sleeve 2 can be designed to be circular. The diameter of the end portion 22 is larger than the outer diameter of the side wall 21. The end portion 22 includes a portion that radially extends beyond the side wall 21, that is, the flange mentioned above. Additionally, the length that the side wall 21 of the sleeve 2 has can be greater than the length of the first housing portion 3. In such a design, the sleeve 2 is only partially surrounded by the first housing portion, and a part of the sleeve 2 extends beyond the first housing portion to the external environment. This can make it easy for the user to access the sleeve of the push switch to actuate the push switch when the push switch is small in size. This is particularly advantageous for users who are accustomed to operating the push switch with their thumbs.

[0056] Combination Figure 1-Figure 7 A plurality of implementations of push switches with a high liquid protection level have been described. Such push switches can be widely used in a plurality of scenarios, for example, in low voltage control. The push switch 100 can be incorporated into a switch cabinet or an electrical device. The switch cabinet includes, for example, a trolley switch cabinet and a fixed switch cabinet. The electrical device includes, for example, a control cabinet, a compensation cabinet, an incoming cabinet, an outgoing cabinet, a frequency conversion control cabinet, and a soft start cabinet. The switch cabinet and the electrical device using the push switch 100 also enjoy the benefits described with respect to the push switch 100. For the sake of simplicity, it will not be described in detail here.

[0057] Although the subject matter has been described in language specific to structural features and / or methodological acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A push switch (100), comprising: A moving member (1) is configured to be actuated to move in a straight line between a first position (P1) and a second position (P2), thereby switching the push switch (100) between an on state and an off state. a sleeve (2), the sleeve (2) comprising a side wall (21) and an end portion (22), the side wall (21) and the end portion (22) surrounding a portion of the moving member (1), the sleeve (2) being configured to be attached to the moving member (1) and to move together with the moving member (1), a first housing part (3), the first housing part (3) being configured to be positioned outside the sleeve (2), a first locking member (4) configured to be detachably connected to the first housing part (3), A sealing ring (5) is configured to be clamped between the first housing portion (3) and the first locking member (4), and the sealing ring (5) is also configured to maintain contact with the side wall (21) of the sleeve (2) when the sleeve (2) moves.

2. The push switch (100) according to claim 1, wherein the sealing ring (5) comprises a fixing portion (51) and an extending portion (52) extending from the fixing portion (51), the fixing portion (51) being arranged between the first housing portion (3) and the first locking component (4) and clamped by the first housing portion (3) and the first locking component (4), the extending portion (52) comprising a contact portion (53) at least partially in contact with the side wall (21), and the size of the contact area between the contact portion (53) and the side wall (21) is uniform in the circumferential direction of the side wall (21).

3. The push switch (100) according to claim 2, The extending portion (52) is configured to extend from the fixing portion (51) at an angle, so that the sealing ring (5) has a groove with a V-shaped cross-section.

4. The push switch (100) according to claim 3, The sealing ring (5) is arranged so that the groove communicates with the space (S) of the external environment of the push switch.

5. The push switch (100) according to claim 1, The first housing part (3) comprises an internal thread arranged on the inner side of the first housing part (3), The first locking member (4) comprises an annular member having an external thread provided on an outer side of the annular member and is configured to be threadedly connected to the first housing portion (3) through the external thread and the internal thread and to clamp the sealing ring (5).

6. The push switch (100) according to claim 2, wherein the contact portion (53) includes a plurality of layers, each of the plurality of layers contacting a corresponding portion of the side wall (21) at a different position on the side wall (21).

7. The push switch (100) according to claim 1, wherein the first housing portion (3) comprises a hollow cylinder.

8. A switch cabinet, comprising the push switch (100) according to any one of claims 1 to 7.

9. An electrical device comprising the push switch according to any one of claims 1 to 7.

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