Knob switch with built-in microswitch

Abstract

The utility model discloses a knob switch with a built-in microswitch. Comprising an upper shell, a lower shell connected to the lower side of the upper shell, a rotatable rotating component arranged on the upper shell, and a gear limiting structure arranged between the upper shell and the rotating component and used for limiting the rotating position of the rotating component. The moving contact is arranged on the lower side of the rotating part, extends out of the lower shell downwards and is used for being in contact with a plurality of static contacts, and the microswitch is arranged on the lower shell, is located on the outer side of the rotating part and can rotate along with the rotating part to switch on and off a circuit. According to the turn-knob switch with the built-in microswitch, the built-in microswitch is matched with the rotating component, so that a strong current circuit can be automatically cut off when the turn-knob switch rotates to a zero gear, a dual power-off protection effect can be formed, and the safe use of household appliances can be greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of switches, and more specifically, to a rotary switch with a built-in micro switch. Background Art

[0002] With the increasing development of household appliances, the types are becoming more and more abundant, and the penetration rate is also getting higher and higher. For example, wall breakers, blenders, soymilk makers, washing machines, etc. The rotary control switches used in household appliances cannot achieve the dual power-off protection function, so the use safety of household appliances cannot be further improved. Therefore, those skilled in the art urgently need to develop a rotary switch with a built-in micro switch to meet more actual use requirements. Summary of the Utility Model

[0003] The technical problem to be solved by this application is to provide a rotary switch with a built-in micro switch for the above-mentioned existing technical problems.

[0004] To solve the above technical problems, this application is achieved through the following technical solutions:

[0005] A rotary switch with a built-in micro switch includes an upper housing, a lower housing connected to the lower side of the upper housing, a rotatable rotating member provided on the upper housing, a gear position limiting structure provided between the upper housing and the rotating member for limiting the rotation position of the rotating member, a moving contact provided on the lower side of the rotating member and extending downward out of the lower housing for contacting multiple static contacts, and further includes a micro switch provided on the lower housing and located outside the rotating member and capable of conducting and interrupting the circuit as the rotating member rotates.

[0006] For the rotary switch with a built-in micro switch as described above, the micro switch includes a left rear micro switch located on the left rear side of the rotating member and a right rear micro switch located on the right rear side of the rotating member;

[0007] On the lower side of the rotating member, there is a left rear micro switch trigger portion for rotating and triggering the left rear micro switch to contact and conduct an electrical connection, and a right rear micro switch trigger portion located on the right side of the left rear micro switch trigger portion for rotating and triggering the right rear micro switch to contact and conduct an electrical connection.

[0008] For the rotary switch with a built-in micro switch as described above, the left rear micro switch includes a left rear static contact piece and a left rear elastic contact piece;

[0009] One end of the left rear elastic contact piece is fixed to the lower housing, and a left rear contact point capable of contacting the left rear static contact piece is provided at the other end; a left rear elastic bending portion that can be rotationally squeezed by the left rear micro switch trigger portion is also provided on the left rear elastic contact piece;

[0010] The right rear micro switch comprises a right rear static contact piece and a right rear moving contact piece;

[0011] One end of the right rear moving contact piece is fixed to the lower housing, and the other end thereof is provided with a right rear contact point that can contact the right rear static contact piece; the right rear moving contact piece is also provided with a right rear elastic bending portion that can be rotated and squeezed by the right rear micro switch triggering portion;

[0012] The lower side of the rotating component is also provided with a left rear yielding inner concave position which is located on the left side of the left rear micro switch triggering portion and is concave inwardly for yielding the left rear elastic bending portion.

[0013] As described above, the rotary switch with a built-in micro switch has an upwardly protruding middle upper convex portion in the middle of the upper shell, a left clamping portion is provided on the left side of the outside of the middle upper convex portion, and a right clamping portion is provided on the right side of the outside, and the left clamping portion and the right clamping portion cooperate to be used for clamping with an external connecting piece.

[0014] In the rotary switch with a built-in micro switch as described above, the left clamping portion and the right clamping portion are arranged symmetrically.

[0015] In the rotary switch with a built-in micro switch as described above, the left clamping portion and the right clamping portion are both fan-shaped.

[0016] In the rotary switch with a built-in micro switch as described above, the sector angles of the left clamping portion and the right clamping portion are both 173° to 175°.

[0017] As described above, the rotary switch with built-in micro switch has a middle portion of the middle upper convex portion provided with upper and lower through holes which penetrate up and down and are used to make way for the connection of the rotating component.

[0018] The rotary switch with a built-in micro switch as described above, the gear position limiting structure includes:

[0019] A connecting cavity is provided inside the upper shell and is connected with the upper and lower through holes;

[0020] A spring clamping portion, which is arranged inside the connecting cavity and protrudes toward the middle thereof, and is provided with a clamping opening;

[0021] There are multiple gear positions, which are arranged on the inner wall of the connecting cavity along the peripheral direction of the connecting cavity and are far away from the spring clamping part;

[0022] A spring compression portion, which is disposed on the rotating component and extends outwardly in the radial direction of the rotating component, and is provided with a receiving opening;

[0023] A telescopic latching position group, which is arranged on the accommodating opening and is used for being telescopically latched on the gear latching position;

[0024] A spring support part is arranged on the rotating part and is located below the spring compression part, and is used to cooperate with the spring compression part and the spring clamping part to form a pre-tightening spring accommodating cavity;

[0025] A pre-tightening spring is arranged in the pre-tightening spring accommodating cavity, one end of which is clamped on the clamping opening, and the other end is limited by the spring compression part.

[0026] For the rotary switch with an in-built micro switch as described above, the rotary switch with an in-built micro switch further includes a rotary part detachably connected to the rotating part for rotating the rotating part.

[0027] Compared with the prior art, the above application has the following advantages:

[0028] 1. The rotary switch with an in-built micro switch of the present application realizes automatic cutting-off of the strong electric circuit when the rotary switch rotates to the 0 gear by the cooperation of the in-built micro switch and the rotating part, so as to form a double power-off protection function, and further can greatly improve the safe use of household appliances.

[0029] 2. The rotary switch with an in-built micro switch of the present application clamps the left clamping opening on the external connecting part through the left clamping part arranged on the upper shell, and the right clamping part arranged on the upper shell clamps the right clamping opening on the external connecting part, and then can realize one-time rapid installation, so as to not only greatly improve the switch installation efficiency, but also further improve the production efficiency of household appliances and meet the actual production requirements. Description of the Drawings

[0030] Figure 1 is a perspective view of the rotary switch with an in-built micro switch of the present application.

[0031] Figure 2 is an exploded view of the rotary switch with an in-built micro switch of the present application during installation.

[0032] Figure 3 is Figure 2 a partial enlarged view of Figure Ⅰ .

[0033] Figure 4 is an exploded view of the rotary switch with an in-built micro switch of the present application.

[0034] Figure 5 is a perspective view of another angle of the rotary switch with an in-built micro switch of the present application.

[0035] Figure 6 is a perspective view of the upper shell in the rotary switch with an in-built micro switch of the present application.

[0036] Figure 7 It is another perspective three-dimensional view of the upper shell in the rotary switch with built-in microswitch of the present application.

[0037] Figure 8 It is the first cross-sectional view of the rotary switch with built-in microswitch of the present application, mainly showing the main components of the gear position limiting structure.

[0038] Figure 9 It is Figure 8 Partial enlarged view of Figure Ⅱ .

[0039] Figure 10 It is the left view of the upper shell in the rotary switch with built-in microswitch of the present application.

[0040] Figure 11 It is Figure 10 Partial enlarged view of Figure Ⅲ .

[0041] Figure 12 It is the three-dimensional view of the left rear microswitch and the right rear microswitch installed on the lower shell in the rotary switch with built-in microswitch of the present application.

[0042] Figure 13 It is the second cross-sectional view of the rotary switch with built-in microswitch of the present application, mainly showing the positional relationship between the left rear microswitch and the right rear microswitch and the rotating component.

[0043] Figure 14 It is the three-dimensional view of the rotating component in the rotary switch with built-in microswitch of the present application. Specific embodiments

[0044] The present application will be further described in detail below with reference to the accompanying drawings through specific embodiments.

[0045] As Figures 1 to 14 shown, a rotary switch 100 with a built-in microswitch includes an upper shell 1, a lower shell 7 connected to the lower side of the upper shell 1, a rotatable rotating component 2 provided on the upper shell 1, a gear position limiting structure provided between the upper shell 1 and the rotating component 2 for limiting the rotation position of the rotating component 2, a moving contact 4 provided on the lower side of the rotating component 2 and extending downward out of the lower shell 7 for contacting a plurality of static contacts, and a microswitch 6 provided on the lower shell 7 and located outside the rotating component 2 for making and breaking the circuit as the rotating component 2 rotates.

[0046] The rotary switch with a built-in micro switch in this application cooperates with the rotating component 2 by means of the built-in micro switch 6 to automatically cut off the strong power circuit when the rotary switch rotates to the 0 position, thereby forming a dual power-off protection function, and further greatly improving the safe use of household appliances.

[0047] Further, the micro switch 6 includes a left rear micro switch 61 located at the left rear side of the rotating component 2 and a right rear micro switch 62 located at the right rear side of the rotating component 2;

[0048] A left rear micro switch trigger part 21 for rotating and triggering the left rear micro switch 61 to contact and conduct electricity is provided on the lower side of the rotating component 2, and a right rear micro switch trigger part 22 located on the right side of the left rear micro switch trigger part 21 for rotating and triggering the right rear micro switch 62 to contact and conduct electricity is provided.

[0049] The left rear micro switch 61 includes a left rear static contact piece 611 and a left rear elastic contact piece 612;

[0050] One end of the left rear elastic contact piece 612 is fixed to the lower housing 7, and a left rear contact point 6121 that can contact the left rear static contact piece 611 is provided at the other end thereof; a left rear elastic bending part 6122 that can be rotated and pressed by the left rear micro switch trigger part 21 is also provided on the left rear elastic contact piece 612;

[0051] The right rear micro switch 62 includes a right rear static contact piece 621 and a right rear moving contact piece 622;

[0052] One end of the right rear moving contact piece 622 is fixed to the lower housing 7, and a right rear contact point 6221 that can contact the right rear static contact piece 621 is provided at the other end thereof; a right rear elastic bending part 6222 that can be rotated and pressed by the right rear micro switch trigger part 22 is also provided on the right rear moving contact piece 622;

[0053] The lower side of the rotating component 2 is also provided with a left rear recessed position 23 which is located on the left side of the left rear micro switch triggering portion 21 and is recessed inwardly for making way for the left rear elastic bending portion 6122 . The advantage is that when the knob switch is rotated to gear 0, the high-voltage circuit can be completely cut off. When the knob switch is rotated to other working gears other than gear 0, the right rear microswitch trigger part 22 can first trigger the right rear microswitch 62 to turn on conduction to make the entire knob switch enter a normal rotation control working state. When it is necessary to rotate and control to a higher gear, the right rear microswitch trigger part 22 rotates over the right rear elastic bending part 6222, and the left rear microswitch trigger part 21 also rotates to trigger the left rear microswitch 61 to turn on conduction. Finally, when the right rear microswitch trigger part 22 completely rotates over the right rear elastic bending part 6222, the right rear microswitch 62 elastically resets and disconnects, while the left rear microswitch 61 continues to be turned on and conducted by the rotation and extrusion of the left rear microswitch trigger part 21. When the knob switch is rotated to gear 0, the rotating component 2 rotates to reset, and the left rear microswitch 61 is disengaged from the left rear microswitch trigger part 21, and the right rear microswitch 62 is disengaged from the right rear microswitch trigger part 22, thereby achieving the overall cutting-off effect of the high-voltage circuit.

[0054] Furthermore, the upper shell 1 is provided with an upwardly protruding middle upper convex portion 11 in the middle portion, a left clamping portion 111 is provided on the outer left side of the middle upper convex portion 11, and a right clamping portion 112 is provided on the outer right side thereof, the left clamping portion 111 and the right clamping portion 112 cooperate with each other for clamping with the external connecting member 300; the external connecting member 300 is provided with a left clamping opening 301 through which the left clamping portion 111 can be clamped, and also with a right clamping opening 302 through which the right clamping portion 112 can be clamped.

[0055] The rotary switch with a built-in micro switch in the present application is connected to the left clamping opening 301 on the external connecting member 300 by the left clamping portion 111 provided on the upper shell 1, and the right clamping portion 112 provided on the upper shell 1 is connected to the right clamping opening 302 on the external connecting member 300, thereby achieving a one-time quick installation, which can not only greatly improve the switch installation efficiency, but also further improve the production efficiency of household appliances to meet actual production needs.

[0056] Furthermore, the static contact is arranged on the PCB circuit board 200 .

[0057] Furthermore, the left clamping portion 111 and the right clamping portion 112 are disposed symmetrically to facilitate processing and production.

[0058] Further, the shapes of the left clamping portion 111 and the right clamping portion 112 are both fan-shaped. The fan angles β of the left clamping portion 111 and the right clamping portion 112 are both 173° - 175°, preferably 174°. The advantage is that it can not only enable the left clamping portion 111 to be smoothly clamped onto the left clamping opening 301 and the right clamping portion 112 to be smoothly clamped onto the right clamping opening 302, but also improve the clamping stability of the entire switch and avoid loosening.

[0059] Further, a vertically penetrating hole 113 for making way for connecting the rotating member 2 is provided in the middle of the middle convex portion 11 and penetrates up and down. The purpose is to make way for the upper end of the rotating member 2 to extend out of the upper housing 1.

[0060] Further, the gear position limiting structure includes a connecting cavity 31, a spring clamping portion 32, a gear position clamping portion 33, a spring compression portion 34, a telescopic clamping group 35, a spring supporting portion 36, and a pre-tightening spring 37;

[0061] The connecting cavity 31 is provided inside the upper housing 1 and communicates with the vertically penetrating hole 113; the spring clamping portion 32 is provided inside the connecting cavity 31 and protrudes towards the middle thereof, and a clamping opening 321 is provided thereon; the number of the gear position clamping portions 33 is multiple, and they are closely arranged along the circumferential direction of the connecting cavity 31 on the inner side wall of the connecting cavity 31 and are far from the spring clamping portion 32; the spring compression portion 34 is provided on the rotating member 2 and protrudes outwards along the radial direction of the rotating member 2, and a receiving opening 341 is provided thereon; the telescopic clamping group 35 is provided on the receiving opening 341 and is used for telescopic clamping onto the gear position clamping portion 33; the spring supporting portion 36 is provided on the rotating member 2 and is located below the spring compression portion 34 and is used to cooperate with the spring compression portion 34 and the spring clamping portion 32 to form a pre-tightening spring receiving cavity; the pre-tightening spring 37 is provided in the pre-tightening spring receiving cavity, and one end thereof is clamped onto the clamping opening 321 and the other end is limited by the spring compression portion 34.

[0062] The purpose of the gear position limiting structure in this application is to achieve switch gear shifting and stabilize the gear position after gear shifting.

[0063] Further, the pre-tightening spring 37 is a telescopic compression spring and is arranged in an arc shape. The purpose is to meet the actual use requirements.

[0064] Further, the rotary switch 100 with an in-built micro switch further includes a rotary member 5 detachably connected to the rotating member 2 for rotating the rotating member 2. The purpose is to enable the rotating member 2 to be easily rotated by the rotary member 5.

[0065] Furthermore, the connection method between the lower housing 7 and the upper housing 1 is a snap connection method. The purpose is to achieve direct snap connection and reduce the installation operation.

[0066] In summary, the embodiments of the present application have been described in detail, but the present application is not limited to the above embodiments. Even if various changes are made to the present application, they still fall within the protection scope of the present application.

Claims

1. A rotary switch with a built-in micro switch, comprising an upper housing (1), a lower housing (7) connected to the lower side of the upper housing (1), a rotatable rotating member (2) provided on the upper housing (1), a gear position limiting structure provided between the upper housing (1) and the rotating member (2) for limiting the rotation position of the rotating member (2), and a moving contact (4) provided on the lower side of the rotating member (2) and extending downward out of the lower housing (7) for contacting a plurality of static contacts, characterized in that: It also includes a micro switch (6) which is arranged on the lower housing (7) and located outside the rotating component (2) and can switch the circuit on and off as the rotating component (2) rotates.

2. The rotary switch with an in-built micro switch according to claim 1, characterized in that: The micro switch (6) comprises a left rear micro switch (61) located on the left rear side of the rotating component (2), and a right rear micro switch (62) located on the right rear side of the rotating component (2); The lower side of the rotating component (2) is provided with a left rear micro switch triggering portion (21) for rotating and triggering the left rear micro switch (61) to contact and conduct electrical connection, and a right rear micro switch triggering portion (22) is provided on the right side of the left rear micro switch triggering portion (21) for rotating and triggering the right rear micro switch (62) to contact and conduct electrical connection.

3. The rotary switch with a built-in microswitch according to claim 2, characterized in that: The left rear micro switch (61) comprises a left rear static contact piece (611) and a left rear elastic contact piece (612); One end of the left rear elastic contact piece (612) is fixed to the lower housing (7), and the other end thereof is provided with a left rear contact point (6121) that can contact the left rear static contact piece (611); the left rear elastic contact piece (612) is also provided with a left rear elastic bending portion (6122) that can be rotated and squeezed by the left rear micro switch triggering portion (21); The right rear micro switch (62) comprises a right rear static contact piece (621) and a right rear moving contact piece (622); One end of the right rear movable contact piece (622) is fixed to the lower housing (7), and the other end thereof is provided with a right rear contact point (6221) that can contact the right rear stationary contact piece (621); the right rear movable contact piece (622) is also provided with a right rear elastic bending portion (6222) that can be rotated and squeezed by the right rear micro switch triggering portion (22); The lower side of the rotating component (2) is also provided with a left rear recessed position (23) which is located on the left side of the left rear micro switch triggering portion (21) and is recessed inwardly for making way for the left rear elastic bending portion (6122).

4. The rotary switch with a built-in microswitch according to claim 1, characterized in that: The upper shell (1) is provided with an upwardly protruding middle upper convex portion (11) in the middle, a left clamping portion (111) is provided on the left side of the outside of the middle upper convex portion (11), and a right clamping portion (112) is provided on the right side of the outside, the left clamping portion (111) and the right clamping portion (112) cooperate to be clamped with an external connecting piece.

5. The rotary switch with a built-in microswitch according to claim 4, wherein: The left clamping portion (111) and the right clamping portion (112) are arranged symmetrically.

6. The rotary switch with a built-in microswitch according to claim 5, characterized in that: The left clamping portion (111) and the right clamping portion (112) are both fan-shaped.

7. The rotary switch with an in-built microswitch according to claim 6, characterized in that: The sector angles of the left clamping portion (111) and the right clamping portion (112) are both 173° to 175°.

8. The rotary switch with an in-built microswitch according to claim 4, characterized in that: The middle portion of the middle upper convex portion (11) is provided with upper and lower through holes (113) which penetrate the upper and lower portions and are used to allow for connection with the rotating component (2).

9. The rotary switch with an in-built microswitch according to claim 8, characterized in that: The gear position limiting structure comprises: A connecting cavity (31) is provided inside the upper shell (1) and is connected to the upper and lower through holes (113); A spring clamping portion (32) is disposed inside the connecting cavity (31) and protrudes toward the middle thereof, and is provided with a clamping opening (321); Gear position latches (33), there are multiple of them, and they are arranged closely along the circumferential direction of the connecting cavity (31) on the inner side wall of the connecting cavity (31), and they are far away from the spring clamping portion (32); Spring compression portion (34), which is arranged on the rotating member (2), extends outward along the radial direction of the rotating member (2), and is provided with a receiving opening (341) thereon; Telescopic latch group (35), which is arranged on the receiving opening (341) and is used for telescopic clamping on the gear position latch (33); Spring support portion (36), which is arranged on the rotating member (2) and is located below the spring compression portion (34), and is used to cooperate with the spring compression portion (34) and the spring clamping portion (32) to form a pre-tightening spring receiving cavity; Pre-tightening spring (37), which is arranged in the pre-tightening spring receiving cavity, and one end of it is clamped on the clamping opening (321), and the other end is limited by the spring compression portion (34).

10. The rotary switch with a built-in microswitch according to claim 1, characterized in that: The rotary switch with the built-in micro switch further includes a rotary member (5) that can be detachably connected to the rotating member (2) for rotating the rotating member (2).

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