Switch assembly

Abstract

The present application provides a switch assembly, which includes: a base provided with a through hole; a mandrel partially disposed in the through hole, the mandrel including a main body and a recess, the main body being cylindrical, the recess being disposed on the outer peripheral surface of the main body, each recess including a first recess and a second recess, the first recess and the second recess being spaced apart in the axial direction of the mandrel; an elastic part disposed on the base, a part of the elastic part protruding from the inner wall of the through hole of the base, the elastic part being capable of applying an elastic force to the mandrel in the radial direction of the mandrel, and at least one of the recess and the elastic part being provided with a plurality of them in the circumferential direction of the mandrel; a first switch configured to be triggered by being axially pressed; and a second switch configured to be triggered by being radially pressed. By adopting the above technical solution, since it is relatively easy to machine the recess on the outer peripheral surface of the mandrel, it is easy to ensure the machining accuracy, and the cost of the switch assembly can be reduced.

Description

Technical Field

[0001] This application belongs to the field of switches, and particularly relates to a switch assembly. Background Art

[0002] In electrical equipment with relatively high protection level requirements, for switches that need to implement two functions, the prior art usually realizes them in the following two ways.

[0003] (1) Using two independent switches to respectively implement two functions. The disadvantage of this method is that the two switches occupy a large space, and it is inconvenient to use this structure when the space of the equipment is limited.

[0004] (2) Another is a composite switch.

[0005] As Figure 1 shown, a composite switch includes a first switch a1, a second switch a2, a button a3, a pressing post a4, a screw a5, a switch base a6, a spring a7, and a steel ball a8. The switch base a6 has a mounting hole, and a plurality of hemispherical recesses are provided in the mounting hole. The pressing post a4 is disposed in the mounting hole, and the button a3 is connected to the pressing post a4 through the screw a5. The spring a7 passes through the pressing post a4, so that the spring a7 applies an elastic force to the steel ball a8, and the steel ball a8 cooperates with the recess to play a role in limiting the pressing post a4. By pressing and pulling up the button a3, the opening and closing of the first switch a1 can be controlled, and by rotating the button a3, the opening and closing of the second switch a2 can be controlled. The disadvantage of this switch is that it is difficult to accurately process the size of the hemispherical recess in the mounting hole, and the processing cost is relatively high. Summary of the Invention

[0006] This application aims to propose a switch assembly, which can realize two switch functions under limited space, and the processing cost of the switch assembly is relatively low.

[0007] This application proposes a switch assembly, which includes:

[0008] A base provided with a through hole;

[0009] A core shaft, part of which is disposed in the through hole. The core shaft includes a main body and a concave portion. The main body is cylindrical, and the concave portion is disposed on the outer peripheral surface of the main body. Each concave portion includes a first concave portion and a second concave portion, and the first concave portion and the second concave portion are spaced apart in the axial direction of the core shaft;

[0010] An elastic part, the elastic part is arranged on the base, a part of the elastic part protrudes from the inner wall of the through hole of the base, the elastic part can apply an elastic force to the mandrel along the radial direction of the mandrel, and at least one of the concave part and the elastic part is provided with a plurality along the circumferential direction of the mandrel, and the elastic part can be partially embedded in the concave part;

[0011] A first switch, the first switch is arranged in a form that can be pressed and triggered along the axial direction, and the movement of the mandrel along the axial direction can control the closing or opening of the first switch; and

[0012] A second switch, the second switch is arranged in a form that can be pressed and triggered along the radial direction, and the rotation of the mandrel can control the closing or opening of the second switch.

[0013] Preferably, the switch assembly is used for being installed on a housing, the switch assembly further includes a first compression nut, and the first compression nut can pass through the installation hole of the housing and be connected to the base, so that the switch assembly is integrally installed on the housing.

[0014] Preferably, the switch assembly further includes a sealing ring for being arranged between the first compression nut and the housing.

[0015] Preferably, the switch assembly further includes a pressure shaft, a second compression nut and a sealing sleeve. When the switch assembly is installed on the housing, the pressure shaft and the mandrel are fixedly connected, the outer peripheral edge part of the sealing sleeve is clamped between the first compression nut and the second compression nut, and the inner peripheral edge part of the sealing sleeve is clamped between the pressure shaft and the mandrel.

[0016] Preferably, the number of the concave parts is an integer multiple of the number of the elastic parts or the number of the elastic parts is an integer multiple of the number of the concave parts.

[0017] Preferably, two elastic parts are arranged, and the two elastic parts are arranged oppositely.

[0018] Preferably, 4 concave parts are arranged, and the 4 concave parts are evenly arranged along the circumferential direction.

[0019] Preferably, the main body is connected with a boss, the boss is located on the outer peripheral surface of the main body, the boss forms a circular ring around the mandrel for one week, the radial dimension of the boss is larger than the inner diameter of the through hole, and the boss is used for triggering the first switch.

[0020] Preferably, the main body is connected with a pressing part, and when the mandrel rotates around its axis, the pressing part can trigger the second switch to make the second switch closed.

[0021] Preferably, the bottom of the recess is hemispherical, and the elastic part is a ball head spring plunger.

[0022] By adopting the above technical solutions, the present application can obtain at least one of the following beneficial effects.

[0023] (1) It is relatively easy to machine the recess on the outer peripheral surface of the mandrel, which is easy to ensure the machining accuracy and can reduce the cost of the switch assembly.

[0024] (2) By providing a sealing ring between the first compression nut and the housing, it is possible to prevent a liquid such as water from entering the interior of the housing through the gap between the switch assembly and the housing and damaging the components inside the housing.

[0025] (3) By providing a sealing sleeve to cover the gap between the mandrel and the first compression nut, it is possible to prevent a liquid such as water from entering the interior of the housing through the gap of the switch assembly and damaging the components inside the housing. Description of the Drawings

[0026] Figure 1 Shows a possible cross-sectional structural view of a composite switch.

[0027] Figure 2 Shows a cross-sectional structural view of a switch assembly according to an embodiment of the present application.

[0028] Figure 3 Shows an exploded view of a switch assembly according to an embodiment of the present application.

[0029] Description of the Reference Numerals

[0030] a1 First switch a2 Second switch a3 Button a4 Pressing column a5 Screw a6 Switch base a7 Spring a8 Steel ball

[0031] 100 Housing 101 Mounting hole

[0032] 1 Base 11 Elastic part mounting hole

[0033] 2 Mandrel 21 Main body 22 Boss 23 Recess 231 First recess 232 Second recess 24 Pressing part

[0034] 3 Pressing shaft 31 First through hole

[0035] 4 Button 41 Second through hole 42 Screw

[0036] 5 First switch

[0037] 6 Second switch

[0038] 7 Elastic part 71 First elastic part 72 Second elastic part

[0039] 8 First compression nut 81 Sealing ring

[0040] 9 Second compression nut

[0041] 10 Sealing sleeve

[0042] A Axial direction R Radial direction C Circumferential direction. Specific implementation manner

[0043] The exemplary implementation manners of the present application will be described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, rather than to exhaust all feasible manners of the present application, nor to limit the scope of the present application.

[0044] In the following description, if not separately stated, the axial direction A refers to the axial direction of the mandrel 2, the radial direction R refers to the radial direction of the mandrel 2, and the circumferential direction C refers to the circumferential direction of the mandrel 2.

[0045] As Figure 2 and Figure 3 shown, the present application provides a switch assembly, which includes a base 1, a mandrel 2, a pressing shaft 3, a button 4, a first switch 5, a second switch 6, an elastic part 7, a first compression nut 8, a second compression nut 9, and a sealing sleeve 10.

[0046] The base 1 is provided with a through hole, the through hole is a round hole, the mandrel 2 is generally cylindrical, and the mandrel 2 is partially disposed in the through hole. The through hole and the mandrel 2 cooperate with each other to enable the mandrel 2 to slide axially A in the through hole and rotate around the axis of the mandrel 2, and the through hole can play a guiding role.

[0047] The first switch 5 is located below the mandrel 2, and the second switch 6 is located below the side of the mandrel 2. The first switch 5 and the second switch 6 can be triggered to close when pressed, and remain closed when pressed, and are in an open state when not pressed or after the pressing is released. The first switch 5 is arranged in a form that can be pressed and triggered axially A, and the second switch 6 is arranged in a form that can be pressed and triggered radially R.

[0048] As Figure 2 and Figure 3 shown, the base 1 is provided with an elastic part 7, a part of the elastic part 7 protrudes from the inner wall of the through hole of the base 1, the elastic part 7 can apply an elastic force radially R along the mandrel 2, and the elastic part 7 can partially be embedded in a recess 22 on the surface of the mandrel 2, thereby locking the mandrel 2 and keeping the position of the mandrel 2 from changing randomly. The elastic part 7 can be installed by providing an elastic part installation hole 11 extending radially R on the base 1, and such an installation method makes the processing of the base relatively easy.

[0049] Further, a plurality of elastic parts 7 may be provided, and the plurality of elastic parts 7 may be evenly distributed in the circumferential direction C of the through hole. For example, the elastic part 7 includes a first elastic part 71 and a second elastic part 72, and the first elastic part 71 and the second elastic part 72 are oppositely arranged. The oppositely arranged first elastic part 71 and second elastic part 72 can balance the force on the mandrel 2, thereby avoiding excessive frictional force between the mandrel 2 and the inner wall of the through hole.

[0050] Both the first elastic part 71 and the second elastic part 72 may be spring plungers. The base 1 is provided with elastic part mounting holes 11 for mounting the spring plungers, and the elastic plungers are mounted in the elastic part mounting holes 11 by threaded connection.

[0051] Further, the front end of the spring plunger is spherical, and the elastic part 7 is a ball head spring plunger. The ball head part of the ball head spring plunger protrudes from the inner wall surface of the through hole.

[0052] As Figure 2 and Figure 3 shown, the mandrel 2 includes a main body 21, a convex platform 22, a concave part 23, and a pressing part 24. The main body 21 is cylindrical. The convex platform 22 is arranged on the outer peripheral surface of the main body 21. The convex platform 22 may be located at the lower part of the main body 21, and the convex platform 22 may form an annular shape around the mandrel 2 for one week. The radial dimension of the convex platform 22 is greater than the inner diameter of the through hole, and the convex platform 22 is located below the base 1. When the mandrel 2 moves upward, the convex platform 22 limits and blocks the mandrel 2 from completely passing through the through hole. When the mandrel 2 moves downward, the convex platform 22 can trigger the first switch 5 located below the mandrel 2 by pressing.

[0053] It can be understood that the annular convex platform 22 enables the mandrel 2 to trigger the first switch 5 when the mandrel 2 moves downward at any rotated position.

[0054] A plurality of concave parts 23 are arranged on the outer peripheral surface of the main body 21, and the plurality of concave parts 23 are arranged along the circumferential direction. For example, 4 concave parts 23 are evenly arranged at 4 positions, and the angle formed by two adjacent concave parts 23 along the circumferential direction C is 90 degrees. Each concave part 23 at each position includes a first concave part 231 and a second concave part 232. The first concave part 231 and the second concave part 232 are spaced apart in the axial direction A of the mandrel 2, and the first concave part 231 is located above the second concave part 232. Every time the mandrel 2 rotates 90 degrees, the elastic part 7 can slide out of the original concave part 23 and then embed into another concave part 23.

[0055] It can be understood that it is relatively easy to machine the concave parts 23 on the outer peripheral surface of the mandrel 2, the machining accuracy is easy to guarantee, and the machining cost is also relatively low.

[0056] Further, the bottoms of the first recess 231 and the second recess 232 can be hemispherical depressions, making it easy for the head of the spring plunger to be embedded in the recess 23 under the guidance of the hemispherical depression. After an external force is applied to the mandrel 2, the head of the spring plunger can also easily slide out of the hemispherical depression. As the mandrel 2 moves axially, the elastic portion 7 can be embedded in the first recess 231 or the second recess 232. As the mandrel 2 rotates, the elastic portion 7 can be embedded in the first recess 231 or the second recess 232 at different positions.

[0057] The pressing portion 24 can be in the shape of a flat plate and can be provided below the main body 21. When the mandrel 2 rotates about its axis, the pressing portion 24 can trigger the second switch 6 located below the side of the mandrel 2 to close the second switch 6. It can be understood that the pressing portion 24 can also have other shapes as long as the pressing portion 24 can approach and move away from the second switch 6 as the mandrel 2 rotates about its axis.

[0058] Specifically, the base 1 is connected with an elastic piece 14. The elastic piece 14 is located between the second switch 6 and the pressing portion 24. The elastic piece 14 has elasticity and has a tendency to approach the pressing portion 24. Rotating the mandrel 2 can make the pressing portion 24 approach or move away from the elastic piece 14. When the pressing portion 24 approaches the elastic piece 14, the pressing portion 24 deflects the elastic piece 14 to move towards the second switch 6 to close the second switch 6. When the pressing portion 24 moves away from the elastic piece 14, the elastic piece 14 separates from the second switch 6 under the action of the elastic force to open the second switch 6.

[0059] When the pressing portion 24 triggers the second switch 6 to close the second switch 6, the elastic portion 7 fixes the mandrel 2 to maintain the closed state of the second switch 6. At least one of the four positions of the recess 23 includes a position where the elastic portion 7 can be embedded in the recess 23 when the second switch 6 is in the closed state.

[0060] As Figure 2 shown, the mandrel 2 and the pressing shaft 3 are fixedly connected. For example, the mandrel 2 and the pressing shaft 3 can be connected by threads. The pressing shaft 3 and the button 4 are fixedly connected. Specifically, the pressing shaft 3 is provided with a first through hole 31, and the first through hole 31 penetrates the pressing shaft 3 along the radial direction R of the pressing shaft 3. The button 4 is provided with a second through hole 41, and the second through hole 41 penetrates the button 4 along the radial direction of the button 4. The first through hole 31 and the second through hole 41 are aligned. The first through hole 31 and / or the second through hole 41 is a threaded hole, and a screw 42 passes through the pressing shaft 3 and the button 4 to connect the two together. The button 4, the pressing shaft 3 and the mandrel 2 are connected together. Rotating the button 4 can make the mandrel 2 rotate together. Pressing the button 4 downward or pulling the button 4 upward can also make the mandrel 2 be pressed downward or pulled upward together.

[0061] As Figure 2 and Figure 3As shown, the switch assembly of the present application can be installed on the housing 100. Specifically, the housing 100 is provided with a mounting hole 101. An internal thread is provided at the upper part of the through hole of the base 1. The first compression nut 8 passes through the mounting hole 101 and is threadedly connected to the base 1, so that the switch assembly is integrally connected to the housing 100.

[0062] A sealing ring 81 is provided between the first compression nut 8 and the housing 100. For example, the sealing ring 81 can be an O-ring. The sealing ring 81 can prevent a liquid such as water from entering the interior of the housing 100 through the gap between the switch assembly and the housing 100 and damaging the components inside the housing 100. In Figure 2 the upper side of the housing 100 is the outside of the housing 100, and the lower side is the inside of the housing 100.

[0063] The second compression nut 9 and the first compression nut 8 are fixedly connected, for example, by threaded connection. A sealing sleeve 10 is provided between the first compression nut 8 and the second compression nut 9. The sealing sleeve 10 can be made of, for example, rubber material. The sealing sleeve 10 can fill the gap between the first compression nut 8 and the second compression nut 9.

[0064] The sealing sleeve 10 is annular. The outer peripheral edge of the sealing sleeve 10 is clamped between the first compression nut 8 and the second compression nut 9, and the inner peripheral edge of the sealing sleeve 10 is clamped between the core shaft 2 and the pressing shaft 3. The sealing sleeve 10 covers the gap between the core shaft 2 and the first compression nut 8, preventing a liquid such as water from entering the interior of the housing 100 through the gap of the switch assembly and damaging the components inside the housing 100.

[0065] It should be noted that in the above specific embodiments, although only 4 recesses 23 are described as being provided circumferentially, the elastic part 7 has two and is arranged oppositely, but the present application is not limited thereto. It is also possible to have 4 recesses provided circumferentially and only 1 elastic part provided, or alternatively, only 1 recess provided and 4 elastic parts provided circumferentially. In this way, still, every time the core shaft rotates 90 degrees, the recess can be separated from the original elastic part and then engaged with another elastic part. Therefore, at least one of the recess 23 and the elastic part 7 may be provided with a plurality circumferentially.

[0066] Furthermore, the number of the recesses 23 can be an integer multiple of the elastic part 7 or the number of the elastic part 7 can be an integer multiple of the recess 23, so that every time the core shaft 2 rotates through the same angle, the elastic part 7 can slide out of the original recess 23 and then be inserted into another recess 23.

[0067] The working process of the switch assembly is described below.

[0068] The first switch 5 is closed or opened through the switch assembly.

[0069] Pressing the button 4 downwards can close the first switch 5. Pressing the button 4 can cause the pressure shaft 3 to drive the mandrel 2 to move downwards, and the boss 22 moves downwards to press the first switch 5 to close the first switch 5. During this process, the ball head of the spring plunger exits from the second recess 232 and then engages into the first recess 231, so that the mandrel 2 maintains the closed state of the first switch 5.

[0070] Pulling up the button 4 upwards can disconnect the first switch 5. Pulling up the button 4 can cause the pressure shaft 3 to drive the mandrel 2 to move upwards, and the boss 22 moves upwards away from the first switch 5 to disconnect the first switch 5. During this process, the ball head of the spring plunger exits from the first recess 231 and then engages into the second recess 232, so that the mandrel 2 maintains the disconnected state of the first switch 5.

[0071] The second switch 6 is closed or disconnected through the switch assembly.

[0072] Rotating the button 4 can close the second switch 6. Rotating the button can cause the pressure shaft 3 to drive the mandrel 2 to rotate. During the rotation process, the pressing portion 24 approaches and presses the elastic piece 14, and the elastic piece 14 moves towards the second switch 6, and the second switch 6 is closed.

[0073] Rotating the button 4 can disconnect the second switch 6. Continuing to rotate the button 4 or rotating the button 4 in the reverse direction can cause the pressing portion 24 to move away from the elastic piece 14, and the elastic piece 14 separates from the second switch 6 under the action of the elastic force, so that the second switch 6 is disconnected.

[0074] During the rotation of the mandrel 2 for closing or disconnecting the second switch 6, the ball head of the spring plunger exits from the recess 23 at a circumferentially previous position and then engages into the recess 23 at another position, so that the mandrel 2 can maintain the closed or disconnected state of the second switch 6.

[0075] It can be understood that whether the first switch 5 is in the closed state or the disconnected state does not affect operating the switch assembly to close or disconnect the second switch 6. Similarly, whether the second switch 6 is in the closed state or the disconnected state does not affect operating the switch assembly to close or disconnect the first switch 5. The two different function switches can be independently controlled through the switch assembly, and the switch assembly occupies less space compared to two separate switches.

Claims

1. A switch component, characterized in that, The switch assembly includes: A base (1), the base (1) being provided with a through hole; A mandrel (2), the mandrel (2) being partially disposed in the through hole, the mandrel (2) including a main body (21) and a recess (23), the main body (21) being cylindrical, the recess (23) being disposed on the outer peripheral surface of the main body (21), each recess (23) including a first recess (231) and a second recess (232), the first recess (231) and the second recess (232) being spaced apart in the axial direction (A) of the mandrel (2); An elastic part (7), the elastic part (7) being disposed on the base (1), the base (1) being provided with an elastic part mounting hole (11) extending in the radial direction (R) of the mandrel (2), the elastic part (7) being mounted in the elastic part mounting hole (11), a part of the elastic part (7) protruding from the inner wall of the through hole of the base (1), the elastic part (7) being capable of applying an elastic force to the mandrel (2) in the radial direction (R) of the mandrel (2), at least one of the recess (23) and the elastic part (7) being provided with a plurality along the circumferential direction (C) of the mandrel (2), the elastic part (7) being capable of partially embedding into the recess (23); A first switch (5), the first switch (5) being configured to be triggered by pressing along the axial direction (A), the movement of the mandrel (2) along the axial direction (A) being capable of controlling the closing or opening of the first switch (5); and A second switch (6), the second switch (6) being configured to be triggered by pressing along the radial direction (R), the rotation of the mandrel (2) being capable of controlling the closing or opening of the second switch (6).

2. The switch assembly according to claim 1, wherein The switch assembly is for installation onto a housing (100), the switch assembly further including a first compression nut (8), the first compression nut (8) being capable of passing through the mounting hole (101) of the housing (100) and connecting with the base (1), so that the switch assembly is integrally mounted on the housing (100).

3. The switch assembly according to claim 2, wherein, The switch assembly further includes a sealing ring (81) for being disposed between the first compression nut (8) and the housing (100).

4. The switch assembly according to claim 2, wherein, The switch assembly further includes a pressure shaft (3), a second compression nut (9) and a sealing sleeve (10), in the case where the switch assembly is installed onto the housing (100), the pressure shaft (3) and the mandrel (2) are fixedly connected, the outer peripheral edge portion of the sealing sleeve (10) is clamped between the first compression nut (8) and the second compression nut (9), and the inner peripheral edge portion of the sealing sleeve (10) is clamped between the pressure shaft (3) and the mandrel (2).

5. The switch assembly according to claim 1, characterized in that, The number of the recesses (23) is an integer multiple of the number of the elastic parts (7) or the number of the elastic parts (7) is an integer multiple of the number of the recesses (23).

6. The switch assembly according to claim 1, wherein Two elastic parts (7) are provided, and the two elastic parts (7) are oppositely disposed.

7. The switch assembly according to claim 1, wherein, Four recesses (23) are provided, and the four recesses (23) are evenly disposed along the circumferential direction (C).

8. The switch assembly according to claim 1, wherein, The main body (21) is connected with a boss (22). The boss (22) is located on the outer peripheral surface of the main body (21). The boss (22) forms an annular shape around the mandrel (2) for one week. The radial dimension of the boss (22) is greater than the inner diameter of the through hole. The boss (22) is used to trigger the first switch (5).

9. The switch assembly according to claim 1, characterized in that, The main body (21) is connected with a pressing part (24). When the mandrel (2) rotates around its axis, the pressing part (24) can trigger the second switch (6) to make the second switch (6) closed.

10. The switch assembly according to claim 1, characterized in that, The bottom of the recess (23) is hemispherical, and the elastic part (7) is a ball head spring plunger.

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