阅读说明：本技术 开关组件 (Switch assembly ) 是由 张占军 李斌 关雨 秦延龙 贺成柱 吴晓彤 樊红杰 于 2020-05-11 设计创作，主要内容包括：本申请提出一种开关组件,其包括：基座,基座设置有通孔；芯轴,芯轴部分地设置于通孔中,芯轴包括主体和凹部,主体为圆柱状,凹部设置于主体的外周面,每个凹部均包括第一凹部和第二凹部,第一凹部和第二凹部在芯轴的轴向上间隔开；弹性部,弹性部设置于基座,弹性部的一部分突出于基座的通孔的内壁,弹性部能够沿芯轴的径向对芯轴施加弹性力,凹部和弹性部中的至少一者沿芯轴的周向设置有多个；第一开关,第一开关被设置为能沿轴向被按压触发的形式；以及第二开关,第二开关被设置为能沿径向被按压触发的形式。通过采用上述技术方案,由于在芯轴的外周面加工凹部比较容易,使加工精度容易保证,可以降低开关组件的成本。(The application provides a switch assembly, it includes: the base is provided with a through hole; the mandrel is partially arranged in the through hole and comprises a main body and concave parts, the main body is cylindrical, the concave parts are arranged on the outer peripheral surface of the main body, each concave part comprises a first concave part and a second concave part, and the first concave part and the second concave part are spaced in the axial direction of the mandrel; the elastic part is arranged on the base, one part of the elastic part protrudes out of the inner wall of the through hole of the base, the elastic part can apply 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 of concave parts along the circumferential direction of the mandrel; the first switch is arranged in a mode that the first switch can be pressed and triggered along the axial direction; and a second switch provided in a form that can be press-triggered in a radial direction. By adopting the technical scheme, the concave part is easy to machine on the peripheral surface of the mandrel, so that the machining precision is easy to guarantee, and the cost of the switch assembly can be reduced.)

1. A switch assembly, comprising:

the device comprises a base (1), wherein the base (1) is 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 recesses (23), the main body (21) being cylindrical, the recesses (23) being disposed on an outer peripheral surface of the main body (21), each of the recesses (23) including a first recess (231) and a second recess (232), the first recess (231) and the second recess (232) being spaced apart in an axial direction (A) of the mandrel (2);

an elastic part (7), wherein the elastic part (7) is arranged on the base (1), a part of the elastic part (7) protrudes out of the inner wall of the through hole of the base (1), the elastic part (7) can apply elastic force to the mandrel (2) along the radial direction (R) of the mandrel (2), at least one of the concave part (23) and the elastic part (7) is provided with a plurality of concave parts along the circumferential direction (C) of the mandrel (2), and the elastic part (7) can be partially embedded into the concave part (23);

a first switch (5), wherein the first switch (5) is arranged to be pressed and triggered along the axial direction (A), and the mandrel (2) moves along the axial direction (A) to control the first switch (5) to be closed or opened; and

a second switch (6), wherein the second switch (6) is arranged to be pressed and triggered along the radial direction (R), and the mandrel (2) is rotated to control the second switch (6) to be closed or opened.

2. The switch assembly according to claim 1, characterized in that it is intended to be mounted to a casing (100), and it further comprises a first compression nut (8), said first compression nut (8) being connectable to said base (1) through a mounting hole (101) of said casing (100), so that said switch assembly is mounted on said casing (100) as a whole.

3. The switch assembly according to claim 2, characterized in that it further comprises a sealing ring (81) for being arranged between the first gland nut (8) and the housing (100).

4. The switch assembly according to claim 2, characterized in that it further comprises a pressure shaft (3), a second compression nut (9) and a sealing sleeve (10), in the condition of mounting of the switch assembly to the casing (100), the pressure shaft (3) and the mandrel (2) being fixedly connected, an outer peripheral edge portion of the sealing sleeve (10) being sandwiched between the first compression nut (8) and the second compression nut (9), an inner peripheral edge portion of the sealing sleeve (10) being sandwiched between the pressure shaft (3) and the mandrel (2).

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

6. The switch assembly according to claim 1, characterized in that said elastic portion (7) is provided in two, said two elastic portions (7) being oppositely arranged.

7. The switch assembly according to claim 1, characterized in that said recesses (23) are provided in 4, 4 of said recesses (23) being uniformly arranged along said circumferential direction (C).

8. The switch assembly according to claim 1, characterized in that a boss (22) is connected to the main body (21), the boss (22) is located on the outer peripheral surface of the main body (21), the boss (22) surrounds the mandrel (2) for a circle to form a circular ring shape, the radial dimension of the boss (22) is larger than the inner diameter of the through hole, and the boss (22) is used for triggering the first switch (5).

9. The switch assembly according to claim 1, characterized in that a pressing portion (24) is connected to the body (21), said pressing portion (24) being able to trigger the second switch (6) to close the second switch (6) when the spindle (2) is rotated about its axis.

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

Technical Field

The application belongs to the switch field, and particularly relates to a switch assembly.

Background

In an electrical device with higher protection level requirements, for a switch which needs to realize two functions, the prior art is generally realized by the following two ways.

(1) The two independent switches are used for realizing two functions respectively, and the mode has the defects that the two switches occupy larger space and the structure is inconvenient to use under the condition of limited equipment space.

(2) The other is a compound switch.

As shown in fig. 1, a compound switch includes a first switch a1, a second switch a2, a button a3, a pressing column a4, a screw a5, a switch seat a6, a spring a7 and a steel ball a 8. The switch seat a6 has a mounting hole, a plurality of hemispherical recesses are arranged in the mounting hole, a pressing column a4 is arranged in the mounting hole, and a button a3 is connected with the pressing column a4 through a screw a 5. The spring a7 penetrates through the pressure column a4, so that the spring a7 exerts elastic force on the steel ball a8, the steel ball a8 is matched with the concave groove, and the function of limiting the pressure column a4 is achieved. The opening and closing of the first switch a1 can be controlled by pressing and pulling the button a3, and the opening and closing of the second switch a2 can be controlled by rotating the button a 3. The switch has the disadvantages that the size of the hemispherical concave groove processed in the mounting hole is difficult to be accurate, and the processing cost is high.

Disclosure of Invention

The present application aims to provide a switch assembly which can realize two switch functions under the condition of limited space and has lower processing cost.

The application provides a switch assembly, switch assembly includes:

a base provided with a through hole;

a mandrel partially disposed in the through hole, the mandrel including a main body having a cylindrical shape and recesses disposed on an outer circumferential surface of the main body, each of the recesses including a first recess and a second recess, the first recess and the second recess being spaced apart in an axial direction of the mandrel;

the elastic part is arranged on the base, a part of the elastic part protrudes out of the inner wall of the through hole of the base, the elastic part can apply elastic force to the mandrel along the radial direction of the mandrel, at least one of the concave part and the elastic part is arranged along the circumferential direction of the mandrel, and the elastic part can be partially embedded into the concave part;

a first switch configured to be press-activated in the axial direction, wherein the movement of the mandrel in the axial direction controls the closing or opening of the first switch; and

a second switch configured to be press-activated in the radial direction, wherein rotation of the spindle controls the second switch to be turned on or off.

Preferably, the switch assembly is configured to be mounted to a housing, and the switch assembly further includes a first compression nut that is connectable to the base through a mounting hole of the housing such that the switch assembly is integrally mounted to the housing.

Preferably, the switch assembly further comprises a seal ring for being disposed between the first compression nut and the housing.

Preferably, the switch assembly further includes a pressing shaft, a second compression nut, and a sealing sleeve, the pressing shaft and the mandrel being fixedly connected with the switch assembly mounted to the housing, an outer peripheral edge portion of the sealing sleeve being sandwiched between the first compression nut and the second compression nut, and an inner peripheral edge portion of the sealing sleeve being sandwiched between the pressing shaft and the mandrel.

Preferably, the number of the concave portions is an integral multiple of the number of the elastic portions or the number of the elastic portions is an integral multiple of the number of the concave portions.

Preferably, the elastic parts are provided in two numbers, and the two elastic parts are oppositely arranged.

Preferably, the recess is provided with 4, and 4 of the recesses are uniformly arranged in the circumferential direction.

Preferably, the main part is connected with a boss, the boss is located on the outer peripheral surface of the main part, the boss surrounds the mandrel for a circle to form a circular ring shape, the radial size of the boss is larger than the inner diameter of the through hole, and the boss is used for triggering the first switch.

Preferably, the main body is connected with a pressing part, and when the mandrel rotates around the axis of the mandrel, the pressing part can trigger the second switch to close the second switch.

Preferably, the bottom of the concave part is hemispherical, and the elastic part is a ball spring plunger.

By adopting the technical scheme, at least one of the following beneficial effects can be obtained.

(1) The concave part is easy to process on the peripheral surface of the mandrel, so that the processing precision is easy to guarantee, and the cost of the switch assembly can be reduced.

(2) By providing a seal ring between the first compression nut and the housing, liquid, such as water, can be prevented from entering the interior of the housing from the gap between the switch assembly and the housing, damaging the components inside the housing.

(3) By providing a sealing sleeve such that the sealing sleeve covers the gap between the spindle and the first compression nut, liquid, such as water, is prevented from entering the interior of the housing from the gap of the switch assembly, damaging the components inside the housing.

Drawings

Figure 1 shows a cross-sectional block diagram of one possible compound switch.

Fig. 2 illustrates a cross-sectional structural view of a switch assembly according to an embodiment of the present application.

Fig. 3 shows an exploded view of a switch assembly according to an embodiment of the present application.

Description of the reference numerals

a1 first switch a2 second switch a3 button a4 press column a5 screw a6 switch seat a7 spring a8 steel ball

100 casing 101 mounting hole

1 base 11 elastic part mounting hole

2 pressing part for boss 23 concave part 231, first concave part 232 and second concave part 24 of spindle 21 main body 22

3 pressing shaft 31 first through hole

4 button 41 second through hole 42 screw

5 first switch

6 second switch

7 elastic part 71 first elastic part 72 second elastic part

8 first gland nut 81 sealing ring

9 second compression nut

10 sealing sleeve

The A axis R is radial to the C circumferential direction.

Detailed Description

Exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the present application, and is not intended to be exhaustive or to limit the scope of the application.

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.

As shown in fig. 2 and 3, the present application provides a switch assembly including a base 1, a core shaft 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.

The base 1 is provided with the through-hole, and the through-hole is the round hole, and dabber 2 is cylindrical on the whole, and dabber 2 sets up partially in the through-hole. The through hole and the mandrel 2 are matched with each other, so that the mandrel 2 can slide along the axial direction A in the through hole and rotate around the axis of the mandrel 2, and the through hole can play a role in guiding.

The first switch 5 is located below the spindle 2 and the second switch 6 is located below the side of the spindle 2. The first switch 5 and the second switch 6 can be triggered to be closed when being pressed, the closed state is kept when the first switch is pressed, and the open state is kept when the first switch is not pressed or the second switch is pressed and released. The first switch 5 is provided in a form that can be press-activated in the axial direction a, and the second switch 6 is provided in a form that can be press-activated in the radial direction R.

As shown in fig. 2 and 3, the base 1 is provided with an elastic portion 7, a part of the elastic portion 7 protrudes from the inner wall of the through hole of the base 1, the elastic portion 7 can apply an elastic force in the radial direction R of the mandrel 2, and the elastic portion 7 can be partially fitted into a recess 22 described later on the surface of the mandrel 2, thereby locking the mandrel 2 and keeping the position of the mandrel 2 from being changed arbitrarily. The elastic portion 7 can be attached by providing the base 1 with an elastic portion attachment hole 11 extending in the radial direction R, which makes the base easy to process.

Further, the elastic portion 7 may be provided in plurality, and the plurality of elastic portions 7 may be evenly distributed in the circumferential direction C of the through hole. For example, the elastic portion 7 includes a first elastic portion 71 and a second elastic portion 72, the first elastic portion 71 and the second elastic portion 72 are disposed opposite to each other, and the opposing first elastic portion 71 and the second elastic portion 72 can balance the stress of the mandrel 2, so as to avoid excessive friction between the mandrel 2 and the inner wall of the through hole.

The first elastic portion 71 and the second elastic portion 72 may be spring plungers, and the base 1 is provided with elastic portion mounting holes 11 for mounting the spring plungers, which are mounted to the elastic portion mounting holes 11 by screwing.

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 out of the inner wall surface of the through hole.

As shown in fig. 2 and 3, the mandrel 2 includes a main body 21, a boss 22, a recess 23, and a pressing portion 24. The body 21 is cylindrical. The boss 22 is disposed on the outer circumferential surface of the main body 21, the boss 22 may be located at a lower portion of the main body 21, and the boss 22 may be formed in a circular ring shape around the mandrel 2. The radial dimension of the boss 22 is larger than the inner diameter of the through hole, and the boss 22 is positioned below the susceptor 1. When the mandrel 2 moves upwards, the boss 22 limits and blocks the mandrel 2 from completely passing through the through hole. When the mandrel 2 moves downwards, the boss 22 can trigger the first switch 5 located below the mandrel 2 by pressing.

It will be appreciated that the annular boss 22 enables the spindle 2 to be moved downwardly to activate the first switch 5 when the spindle 2 is rotated to any position.

A plurality of concave portions 23 are provided on the outer peripheral surface of the main body 21, the plurality of concave portions 23 are distributed in the circumferential direction, for example, 4 concave portions 23 are uniformly provided at 4 positions, and an angle formed by two adjacent concave portions 23 in the circumferential direction C is 90 degrees. The recess 23 of each position includes 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 spindle 2, the first recess 231 being located above the second recess 232. Each time the spindle 2 is turned 90 degrees, the elastic part 7 can slide out of the original recess 23 and then fit into the other recess 23.

It can be understood that the concave portion 23 is relatively easily machined on the outer peripheral surface of the mandrel 2, the machining accuracy is easily ensured, and the machining cost is also low.

Further, the bottom of the first recess 231 and the second recess 232 may be a hemispherical recess, so that the head of the spring plunger is easily inserted into the recess 23 under the guidance of the hemispherical recess. The head of the spring plunger also slides easily out of the hemispherical recess after an external force is applied to the spindle 2. As the mandrel 2 moves in the axial direction, the elastic portion 7 may be fitted into the first recess 231 or the second recess 232. As the spindle 2 rotates, the elastic portion 7 may be fitted into the first recess 231 or the second recess 232 at different positions.

The pressing portion 24 may be flat, and the pressing portion 24 may be provided below the main body 21. When the mandrel 2 rotates around the axis thereof, the pressing part 24 can trigger the second switch 6 located below the side of the mandrel 2, so that the second switch 6 is closed. It will be appreciated that the pressing portion 24 may have other shapes, as long as the pressing portion 24 can move closer to and away from the second switch 6 along with the rotation of the mandrel 2 when the mandrel 2 rotates around the axis thereof.

Specifically, the base 1 is connected with the elastic sheet 14, the elastic sheet 14 is located between the second switch 6 and the pressing portion 24, the elastic sheet 14 has elasticity and tends to approach the pressing portion 24, and the rotating mandrel 2 can enable the pressing portion 24 to approach or depart from the elastic sheet 14. When the pressing portion 24 approaches the elastic piece 14, the pressing portion 24 pushes the elastic piece 14 to move towards the second switch 6, so that the second switch 6 is closed. When the pressing portion 24 is far away from the elastic piece 14, the elastic piece 14 is separated from the second switch 6 under the action of the elastic force, so that the second switch 6 is turned off.

When the pressing portion 24 triggers the second switch 6 to close the second switch 6, the elastic portion 7 fixes the core shaft 2 and maintains the closed state of the second switch 6. The 4 positions where the recess 23 is provided include a position where the elastic portion 7 can be fitted into the recess 23 when at least one second switch 6 is in a closed state.

As shown in fig. 2, the mandrel 2 and the pressing shaft 3 are fixedly connected, for example, the mandrel 2 and the pressing shaft 3 may be connected by a screw thread. 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 through 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, the second through hole 41 penetrates through the button 4 along the radial direction of the button 4, the first through hole 31 is aligned with the second through hole 41, the first through hole 31 and/or the second through hole 41 are threaded holes, and a screw 42 penetrates 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, the mandrel 2 can be rotated together by rotating the button 4, and the mandrel 2 can be pressed downwards or pulled upwards by pressing the button 4 downwards or pulling the button upwards.

As shown in fig. 2 and 3, the switch assembly of the present application may be mounted to a housing 100. Specifically, the housing 100 is provided with a mounting hole 101, an internal thread is provided at an upper portion of the through hole of the base 1, and the first compression nut 8 is threadedly coupled with the base 1 through the mounting hole 101, so that the switch assembly is integrally coupled to the housing 100.

A sealing ring 81 is provided between the first compression nut 8 and the housing 100, for example, the sealing ring 81 may be an O-ring. The packing 81 may prevent liquid, such as water, from entering the interior of the housing 100 from a gap between the switch assembly and the housing 100, damaging components inside the housing 100. In fig. 2, the upper side of the casing 100 is the outside of the casing 100, and the lower side is the inside of the casing 100.

The second compression nut 9 and the first compression nut 8 are fixedly connected, for example screwed. A sealing sleeve 10 is arranged between the first and second compression nuts 8, 9, the sealing sleeve 10 being made of, for example, a rubber material, the sealing sleeve 10 being able to fill the gap between the first and second compression nuts 8, 9.

The sealing sleeve 10 is annular, and an outer peripheral edge portion of the sealing sleeve 10 is sandwiched between the first and second compression nuts 8 and 9, and an inner peripheral edge portion of the sealing sleeve 10 is sandwiched between the mandrel 2 and the pressing shaft 3. The sealing sleeve 10 covers the gap between the spindle 2 and the first compression nut 8 and prevents liquid, such as water, from entering the interior of the housing 100 from the gap of the switch assembly, damaging the components inside the housing 100.

It should be noted that, in the above-described embodiment, although it is described that only the number of the concave portions 23 is 4 in the circumferential direction and the elastic portion 7 has two and is disposed oppositely, the present application is not limited thereto. The number of the concave portions may be 4 in the circumferential direction, and the number of the elastic portions may be only 1, or the number of the concave portions may be only 1 and the number of the elastic portions may be 4 in the circumferential direction. This still allows the recess to be disengaged from the original resilient portion and then engaged with the other resilient portion for every 90 degrees of rotation of the mandrel. Therefore, at least one of the concave portion 23 and the elastic portion 7 may be provided in plural in the circumferential direction.

Further, the number of the concave portions 23 may be an integral multiple of the number of the elastic portions 7 or the number of the elastic portions 7 may be an integral multiple of the number of the concave portions 23, so that the elastic portions 7 can be slid out of the original concave portions 23 and then fitted into the other concave portions 23 after the mandrel 2 rotates by the same angle each time.

The operation of the switch assembly is described below.

The first switch 5 is closed or opened by the switching assembly.

Pressing the button 4 downwards may close the first switch 5. Pressing the button 4 can make the pressing shaft 3 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. In the process, the ball of the spring plunger is withdrawn from the second recess 232 and then inserted into the first recess 231, so that the spindle 2 maintains the closed state of the first switch 5.

Pulling up the button 4 opens the first switch 5. Pulling up the button 4 can make the pressing shaft 3 drive the mandrel 2 to move upwards, and the boss 22 moves upwards to separate from the first switch 5, so that the first switch 5 is disconnected. In the process, the ball of the spring plunger is withdrawn from the first recess 231 and then is inserted into the second recess 232, so that the mandrel 2 maintains the off state of the first switch 5.

The second switch 6 is closed or opened by the switching assembly.

Rotating the button 4 may close the second switch 6. The press shaft 3 can be driven to rotate the mandrel 2 by rotating the button, the press part 24 is close to the elastic sheet 14 in the rotating process and presses the elastic sheet 14, the elastic sheet 14 moves towards the second switch 6, and the second switch 6 is closed.

Rotating the button 4 may open the second switch 6. When the button 4 is continuously rotated or the button 4 is rotated in the opposite direction, the pressing portion 24 can be far away from the elastic piece 14, and the elastic piece 14 is separated from the second switch 6 under the action of the elastic force, so that the second switch 6 is switched off.

During the rotation of the mandrel 2 for closing or opening the second switch 6, the ball head of the spring plunger is inserted into the concave part 23 at another position after being withdrawn from the concave part 23 at one position in the circumferential direction, so that the mandrel 2 can keep the state that the second switch 6 is closed or opened.

It will be appreciated that the first switch 5, whether in the closed or open state, does not affect the operating switch assembly to close or open the second switch 6, and likewise, the second switch 6, whether in the closed or open state, does not affect the operating switch assembly to close or open the first switch 5. Two different function switches can be controlled independently by a switch assembly that occupies less space than two separate switches.