Rotary reset structure and knob self-reset switch

Abstract

The utility model relates to a rotary reset structure and a rotary knob self-reset switch, and the rotary reset structure is characterized in that the rotary reset structure comprises an elastic part and a rotary variable-pitch assembly, the elastic part is connected with the rotary variable-pitch assembly, and the rotary variable-pitch assembly comprises a first rotating part and a second rotating part which can rotate relative to each other; by rotating the first rotating piece and / or the second rotating piece, the distance between the first rotating piece and the second rotating piece can be changed, and meanwhile the elastic piece is driven to deform. The problem that the reliability of a knob self-reset switch is affected due to the fact that a magnetic field of a magnetic element is easily interfered by an external magnetic field when the reset structure is composed of the magnetic element in an existing rotary reset structure is solved.

Description

Technical Field

[0001] The present application relates to the technical field of knob self-reset switches, and in particular to a rotary reset structure and a knob self-reset switch. Background Art

[0002] To simplify operational processes, automatic reset mechanisms are being adopted in a variety of fields, including industrial manufacturing, electrical equipment, furniture design, and medical devices, to improve product performance, increase production efficiency, and enhance user experience. For example, some existing toilets still use one-way rotary knobs to control various mechanisms. This requires multiple knobs to implement control functions, increasing not only the space occupied by the knobs but also manufacturing costs. Other toilets employ bidirectional rotary knobs to control various mechanisms, thus avoiding the aforementioned issues. Some common bidirectional rotary knobs rely on encoders with self-reset functions to reset. However, these encoders are prone to angular offset after reset, making it impossible to ensure that the knob effectively returns to its initial position. Furthermore, some bidirectional rotary knobs utilize magnetic elements to form a reset mechanism. Multiple strong magnetic elements are employed to magnetically attract the rotating body, causing it to rotate and reset. However, these multiple strong magnets are expensive, and the magnetic field of the magnetic elements is easily disturbed by external magnetic fields, which can cause malfunctions and reduce reliability. Utility Model Content

[0003] The present application provides a rotary reset structure and a knob self-reset switch, which solves the problem that the magnetic element is used to form the reset structure in the existing rotary reset structure, but the magnetic field of the magnetic element is easily disturbed by the external magnetic field, thereby affecting the reliability of the knob self-reset switch.

[0004] In the first aspect, the present application provides a rotational reset structure, comprising an elastic member and a rotational distance changing assembly, wherein the elastic member is connected to the rotational distance changing assembly, and the rotational distance changing assembly comprises a first rotating member and a second rotating member that can rotate with each other, wherein by rotating the first rotating member and / or the second rotating member, the distance between the first rotating member and the second rotating member can be changed, and at the same time, the elastic member can be driven to deform.

[0005] In a second aspect, the present application provides a knob self-reset switch, comprising the above-mentioned rotation reset structure, and also comprising an encoder, wherein the encoder is fixedly connected to the rotational pitch changing assembly so that the encoder is driven to rotate when the rotational pitch changing assembly rotates.

[0006] The above-mentioned technical solution provided by the embodiments of the present application has the following advantages over the prior art: the novel rotational reset structure provided by the embodiments of the present application includes an elastic member and a rotational pitch-changing assembly, the elastic member being connected to the rotational pitch-changing assembly, and the elastic member being positioned above or below the rotational pitch-changing assembly. The rotational pitch-changing assembly includes a first rotating member and a second rotating member, and the elastic member can also be connected between the first rotating member and the second rotating member. By applying an external force to rotate the first rotating member and / or the second rotating member, the distance between the first rotating member and the second rotating member can be changed, thereby causing the elastic member to deform. When the external force is no longer applied, the elastic member returns to its initial state without being affected by the external force. The elastic member drives the first rotating member and / or the second rotating member to rotate, restoring the distance between the first rotating member and the second rotating member to its initial state. In the present application, the characteristics of the elastic member deforming under external force and returning to its initial state when not subjected to external force are utilized to automatically reset the rotational pitch-changing assembly without being disturbed by the external environment, thereby improving the reliability of the rotational reset structure. At the same time, in the knob self-resetting switch adopting this rotary reset structure, the encoder is fixed on the rotating pitch-changing component. When external force is applied to rotate the rotating pitch-changing component, the encoder will also rotate accordingly to generate an electrical signal to control the switch. When the rotating pitch-changing component is restored to its initial state under the action of the elastic member, the encoder will also be driven to restore to its initial state, thereby realizing automatic reset of the switch. The performance of the elastic member will not be disturbed by the magnetic field of the external environment, thereby improving the reliability of the knob self-resetting switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0009] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0010] Figure 1 A schematic structural diagram of a rotary reset structure and a rotary reset switch provided in an embodiment of the present application;

[0011] Figure 2Schematic diagram of an example of achieving reset by a rotary reset structure and a rotary reset structure of a knob self-reset switch provided in an embodiment of the present application;

[0012] Figure 3 A schematic structural diagram of a rotary reset structure and a rotary reset switch provided in an embodiment of the present application;

[0013] Figure 4 A schematic structural diagram of a rotary reset structure and a knob cap of a knob self-reset switch provided in an embodiment of the present application;

[0014] Figure 5 A schematic structural diagram of a rotary reset structure and a first rotating member of a knob self-reset switch provided in an embodiment of the present application;

[0015] Figure 6 A schematic structural diagram of a rotary reset structure and a second rotating member of a knob self-reset switch provided in an embodiment of the present application;

[0016] Figure 7 A schematic diagram of the structure of a rotary reset structure and a knob self-reset switch provided by an embodiment of the present application, wherein the knob cap and the second rotating member cooperate;

[0017] Figure 8 A schematic diagram of the structure of a rotary reset structure and a knob self-reset switch provided in an embodiment of the present application, wherein the first rotating member and the second rotating member cooperate;

[0018] Figure 9 A schematic diagram of the structure of a rotary reset structure and a knob self-reset switch, wherein the fixed seat and the first rotating member cooperate with each other, provided in an embodiment of the present application;

[0019] Figure 10 A schematic diagram of the structure of a rotary reset structure and a knob self-reset switch provided in an embodiment of the present application;

[0020] Figure 11 A schematic cross-sectional view of a rotary reset structure and a knob self-reset switch provided in an embodiment of the present application;

[0021] Figure 12 A schematic top view of a rotary reset structure and a sealed base of a knob self-reset switch provided in an embodiment of the present application;

[0022] Figure 13 This is a schematic diagram of the mechanism of a rotary reset structure and a sealing gasket of a knob self-reset switch provided in an embodiment of the present application.

[0023] Description of reference numerals:

[0024] Knob cap 101, positioning cylinder 102, limiting strip 103, notch 104, limiting groove 105, flexible sleeve 106, elastic member 201, first rotating member 301, reset block 302, snap ring 303, second rotating member 401, reset groove 402, limiting portion 403, buckle 404, fixing seat 501, guide groove 502, encoder 601, sealing gasket 701, annular fixing groove 702, sealing base 801, annular mounting groove 802. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] The disclosure below provides many different embodiments or examples for implementing different configurations of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0027] Figure 1 -9 is a rotation reset structure provided in an embodiment of the present application, including an elastic member 201 and a rotational pitch changing assembly, the rotational pitch changing assembly including a first rotational member 301 and a second rotational member 401, the first rotational member 301 and the second rotational member 401 being rotationally connected, the elastic member 201 being connected to the rotational pitch changing assembly, and the connection between the elastic member 201 and the rotational pitch changing assembly can be that the elastic member 201 is connected above the rotational pitch changing assembly, the elastic member 201 is connected below the rotational pitch changing assembly, the elastic member 201 is connected between the first rotational member 301 and the second rotational member 401 of the rotational pitch changing assembly 401, when external force is applied to rotate the first rotating member 301 and / or the second rotating member 401, the distance between the first rotating member 301 and the second rotating member 401 changes, thereby driving the elastic member 201 connected to the rotating pitch changing assembly to deform; when no external force is applied, the elastic member 201 will return to its initial position, thereby driving the distance between the first rotating member 301 and the second rotating member 401 of the rotating pitch changing assembly to return to its initial value under the action of the elastic member 201, thereby completing the automatic resetting of the first rotating member 301 and the second rotating member 401.

[0028] The way to generate the distance change between the first rotating member 301 and the second rotating member 401 when rotating can be that the reset block 302 is fixedly installed on the first rotating member 301, and a reset groove 402 is opened at the corresponding position of the second rotating member 401 and the reset block 302, and the reset block 302 is slidably installed in the reset groove 402. When the reset block 302 slides in the reset groove 402, the distance between the first rotating member 301 and the second rotating member 401 changes, indicating that there is a change in the slope of the bottom of the reset groove 402. Therefore, the reset groove 402 can be a V-shaped reset groove 402, a U-shaped reset groove 402 or a reset groove 402 of other irregular shapes.

[0029] When the distance between the first rotating member 301 and the second rotating member 401 is changed by the cooperation of the reset groove 402 and the reset block 302, one possible implementation method further includes a knob cap 101 and a fixing seat 501, the first rotating member 301 is rotatably connected to the top of the second rotating member 401, one end of the elastic member 201 abuts against the bottom surface of the knob cap 101, and the other end of the elastic member 201 abuts against the top surface of the first rotating member 301, the first rotating member 301 is rotatably connected to the top of the second rotating member 401, and the second rotating member 401 is rotatably mounted on the fixing seat 501. At the same time, a positioning member is fixedly installed at the bottom of the knob cap. The second rotating member 401 is fixedly connected to the positioning tube 102, and the reset block 302 is slidably installed in the reset groove 402 on the side close to the first rotating member 301. A guide groove 502 is opened on the fixed seat 501 along the axial direction of the fixed seat 501, and the reset block 302 is slidably installed in the guide groove 502 on the side away from the first rotating member 301. When the knob cap 101 is rotated, the fixed seat 501 restricts the rotation of the first rotating member 301 through the cooperation of the guide groove 502 and the reset block 302, so that the first rotating member 301 cannot rotate with the rotation of the knob cap 101, and can only slide up and down along the guide groove 502.

[0030] In the embodiment of the present application, the elastic member 201 is illustrated by a spring as an example, the V-shaped reset groove 402 is illustrated as an example, the first rotating member 301 and the second rotating member 401 are illustrated by annular members as an example, the positioning cylinder 102 passes through the first rotating member 301 and is fixedly connected to the second rotating member 401, so that when the knob cap 101 is rotated, the first rotating member 301 can rotate synchronously with the knob cap 101, therefore, the reset block 302 is fixedly mounted on the outer wall of the first rotating member 301, the reset groove 402 is opened on the outer wall of the second rotating member 401, a cavity is opened on the top surface of the fixed seat 501, the guide groove 502 is opened on the inner wall of the cavity, the first rotating member 301 and the second rotating member 401 are placed in the cavity, and the reset block 302 is installed in the reset groove 402 and the guide groove 502 at the same time. When external force is applied to rotate the knob cap 101, the positioning cylinder 102 on the knob cap drives the second rotating member 401 to rotate, and the inclined surface of the V-shaped reset groove 402 of the second rotating member 401 is against the reset block 302, so that the reset block 302 slides upward, thereby making the elastic member 201 in a compressed state between the knob cap and the first rotating member. When the knob cap 101 is released, the elastic member 201 will be restored to its original length without being affected by external force, thereby driving the first rotating member 301 to return to sliding downward. During the downward sliding process of the first rotating member 301, it drives the second rotating member 401 to rotate in the opposite direction to when the external force is applied, thereby realizing automatic reset of the first rotating member 301 and the second rotating member 401. Another possible implementation method is that the diameter of the fixed seat 501 is smaller than that of the first rotating member 301 and the second rotating member 401, the first rotating member 301 and the second rotating member 401 are sleeved on the outer circumference of the fixed seat 501, the guide groove 502 is opened on the outer wall of the fixed seat 501, the reset block 302 is fixed on the inner wall of the first rotating member 301, and the reset groove 402 is opened at the corresponding position of the inner wall of the second rotating member 401 and the reset block 302, the positioning cylinder 102 is fixed on the outer wall of the second rotating member 401, when the knob cap 101 is rotated, the positioning cylinder 102 can also drive the second rotating member 401 to rotate synchronously, and during the rotation of the second rotating member 401, the distance between the first rotating member 301 and the second rotating member 401 changes through the cooperation of the reset block 302, the reset groove 402 and the guide groove 502, and when not subject to external force, it returns to the initial position under the action of the elastic member 201, thereby also being able to achieve automatic reset of the first rotating member 301 and the second rotating member 401.

[0031] In order to ensure that the reset block 302 can slide up and down in the guide groove 502 , the thickness of the reset block 302 needs to be less than or equal to the width of the V-shaped reset groove 402 plus the depth of the guide groove 502 .

[0032] In order to prevent the reset block 302 from slipping out of the V-shaped reset groove 402, limiting portions 403 are set at both ends of the opening of the V-shaped reset groove 402, and the shape and size of the bottom end of the limiting block are set to match the bottom of the V-shaped reset groove 402, so as to increase the stability of the limiting block at the bottom of the limiting groove 105, and at the same time increase the accuracy of the reset block 302 returning to its initial position under the action of the elastic member 201.

[0033] The second rotating member 401 and the positioning cylinder 102 can be fixed by fixing a buckle 404 on the second rotating member 401 and providing a recess 104 matching the buckle 404 on the lower portion of the positioning cylinder 102. The buckle 404 cooperates with the recess 104 to fix the positioning cylinder 102 to the second rotating member 401. When the knob cap 101 or the second rotating member 401 is damaged, it can be removed and replaced, saving costs. At the same time, in order to prevent the elastic member 201 from abutting against the top surface of the first rotating member 301 and prevent the elastic member 201 from shifting, a snap ring 303 is fixed on the top surface of the first rotating member 301, and the diameter of the snap ring 303 is set to be greater than or equal to the diameter of the elastic member 201. Therefore, when the elastic member 201 is fixed to the snap ring 303, the elastic member 201 and the snap ring fixed position are deformed, thereby better fixing the elastic member 201 to the position of the snap ring 303. In the embodiment of the present application, the first rotating member 301 and the second rotating member 401 are illustrated by taking annular members as an example. A buckle 404 can be fixedly installed on the inner wall of the second rotating member 401, and a recess 104 that cooperates with the buckle 404 is opened at the lower part of the positioning cylinder 102. The positioning cylinder 102 passes through the first rotating member 301 and the second rotating member 401, and the buckle 404 on the inner wall of the second rotating member 401 is embedded in the recess 104 on the positioning cylinder 102. The second rotating member 401 and the positioning cylinder 102 are fixed by the cooperation between the buckle 404 and the recess 104.

[0034] In order to reduce the friction between the elastic member 201 and the positioning cylinder 102, a limit bar 103 is fixedly installed on the positioning cylinder 102 along the axial direction of the positioning cylinder 102, and the elastic member 201 is sleeved on the limit bar 103. The limit bar 103 reduces the contact area between the elastic member 201 and the positioning cylinder 102, thereby reducing the friction of the positioning cylinder 102. Only a small force is needed to complete the control during use, thereby providing a better user experience and extending the service life of the positioning cylinder 102 and the elastic member 201.

[0035] In another feasible manner, the knob cap 101 can be connected to the first rotating member 301 to drive the first rotating member 301 to rotate, thereby realizing the change of the distance between the first rotating member 301 and the second rotating member 401. The first rotating member 301 is rotatably connected above the second rotating member 401, and an upwardly opening cavity is provided on the top surface of the fixed seat 501. One end of the elastic member 201 abuts against the bottom of the cavity, and the other end of the elastic member 201 abuts against the bottom of the second rotating member 401. A guide groove 502 is provided on the inner wall of the cavity of the fixed seat 501 along the axial direction of the fixed seat 501, and a guide block is fixedly installed on the outer wall of the second rotating member 401, and the guide block is slidably installed in the guide groove 502. In the embodiment of the present application, the elastic member 201 is illustrated by a spring, and the V-shaped reset groove 402 is illustrated by an example. One end of the spring is connected to the bottom of the cavity, and the other end of the spring abuts the bottom end of the second rotating member 401. When an external force is applied to rotate the first rotating member 301, the reset block 302 slides in the reset groove 402, and the reset block 302 abuts against the reset groove 402, so that the second rotating member 401 slides downward under the action of the guide block and the guide groove 502. The spring is compressed during the sliding process of the second rotating member 401. When the first rotating member 301 is released, the spring will return to its original length. During the process of the spring returning to its original length, it drives the second rotating member 401 to slide upward. During the upward sliding process of the second rotating member 401, the reset groove 402 cooperates with the reset block 302 to make the first rotating member 301 rotate and return to its initial position, thereby realizing automatic reset of the first rotating member 301 and the second rotating member 401.

[0036] When the distance between the first rotating member 301 and the second rotating member 401 is changed by rotating the first rotating member 301 or the second rotating member 401, the member that generates rotation is defined as the active member, and the member that slides up and down due to the rotation of the active member is defined as the driven member. In order to limit the up and down sliding during the rotation of the active member, a rotation limit groove 105 can be opened on the fixed seat 501 corresponding to the position of the active member, and the active member is rotatably installed in the rotation limit groove 105 to ensure that the rotating member always remains at the same horizontal height.

[0037] like Figure 10 -13, the present application also provides a knob self-resetting switch, including the above-mentioned rotational reset structure, and also including an encoder 601, the encoder 601 is fixedly connected to the rotating pitch changing component, and the rotating pitch changing component rotates to drive the encoder 601 to rotate, so that the encoder 601 generates an electrical signal and transmits it to the main control board of the switch, thereby driving the encoder 601 to complete the control of the switch through the rotating pitch changing component, and the rotating pitch changing component can automatically return to the initial position under the action of the elastic member 201, so the switch using the above-mentioned rotational reset component can also achieve automatic reset.

[0038] In order to reduce the exposure of the rotary reset structure to the external environment, a sealing base 801 is fixedly installed under the encoder 601, and an annular mounting groove 802 is opened at the bottom of the sealing base 801. A sealing rubber gasket 701 is fixedly installed in the annular mounting groove 802, and an annular fixing groove 702 is opened on the sealing rubber gasket 701. The fixing base 501 is fixedly installed in the annular fixing groove 701, so that the connection between the fixing base 501 and the sealing base 801 is more airtight. By fixing the sealing base 801 and the fixing base 501, the encoder 601 is sealed in the sealing ring formed by the sealing base 801 and the fixing base 501, and the shaft diameter of the encoder 601, the fixing base 501, the first rotating member 301, the second rotating member 401, the elastic member 201, and the encoder 601 are sleeved in the sleeve formed by the knob cap 101 and the sealing base 801, thereby reducing the contact between the components and the external environment and extending the service life of each component.

[0039] A flexible sleeve 106 is provided on the outer periphery of the knob cap 101 to increase the friction of the knob cap 101 and provide a better user experience.

[0040] In order to fix the encoder 601 on the knob cap 101 well and ensure that the rotation of the knob cap 101 can drive the encoder 601 to rotate synchronously, a limiting groove 105 with the same shape and size as the shaft diameter of the encoder 601 can be fixed in the positioning tube 102, and the shaft diameter of the encoder 601 is fixed by the limiting groove 105. In order to avoid relative rotation between the encoder 601 and the limiting groove 105 when the knob cap 101 is twisted, the shaft diameter of the encoder 601 is set to be non-circular, and the axis of the encoder 601 is fixed and rotation restricted by the limiting groove 105 to ensure that the encoder 601 can rotate synchronously with the knob cap 101.

[0041] In an embodiment of the present application, in order to reduce the size of the knob self-resetting switch, the main body of the encoder 601 can be fixedly installed in the sealed base 801, and the shaft diameter of the encoder 601 passes through the fixed seat 501, the second rotating member 401, and the first rotating member 301 from bottom to top, and is fixedly installed in the limit groove 105. Therefore, when the knob cap 101 is rotated, the axis of the encoder 601 is driven to rotate to generate a signal change. At the same time, the knob self-resetting switch can be self-reset under the action of the reset block 302, the V-shaped reset groove 402, the elastic member 201 and the guide groove 502.

[0042] One feasible method is that the knob self-resetting switch in the present application is applied to a toilet. The toilet includes a toilet body, a driving mechanism and the knob self-resetting switch in the present application. The knob self-resetting switch is installed on the toilet body, and the driving mechanism is arranged in the toilet body. The knob self-resetting switch is connected to the driving mechanism. The driving mechanism can be controlled by the knob self-resetting switch, thereby realizing the flushing of the toilet and other controls.

[0043] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0044] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A rotation reset structure, characterized in that: The invention comprises an elastic member (201) and a rotational pitch changing assembly, wherein the elastic member (201) is connected to the rotational pitch changing assembly, and the rotational pitch changing assembly comprises a first rotating member (301) and a second rotating member (401) which can rotate with each other, wherein the distance between the first rotating member (301) and the second rotating member (401) can be changed by rotating the first rotating member (301) and / or the second rotating member (401), and at the same time, the elastic member (201) is driven to deform.

2. The rotational reset structure according to claim 1, characterized in that: A reset block (302) is fixedly mounted on the first rotating member (301), a reset groove (402) is provided at a position corresponding to the reset block (302) on the second rotating member (401), the reset block (302) is slidably mounted in the reset groove (402), and the reset block (302) slides in the reset groove (402) to change the distance between the first rotating member (301) and the second rotating member (401).

3. The rotation reset structure according to claim 2, characterized in that: The invention also includes a knob cap (101) and a fixing seat (501), wherein the first rotating member (301) is rotatably connected above the second rotating member (401), one end of the elastic member (201) abuts against the bottom surface of the knob cap (101), and the other end of the elastic member (201) abuts against the top surface of the first rotating member (301), and a guide groove (502) is provided on the fixing seat (501) along the axial direction of the fixing seat (501), and the reset block (302) is slidably installed in the reset groove (402) on the side close to the first rotating member (301), and the reset block (302) is slidably installed in the guide groove (502) on the side away from the first rotating member (301), and a positioning cylinder (102) is fixedly installed on the bottom of the knob cap (101), and the second rotating member (401) is fixedly connected to the positioning cylinder (102).

4. The rotational reset structure according to claim 2, characterized in that: The invention also includes a fixed seat (501), a first rotating member (301) is rotatably connected to the top of the second rotating member (401), a cavity opening upward is provided on the top surface of the fixed seat (501), one end of the elastic member (201) abuts against the bottom of the cavity, and the other end of the elastic member (201) abuts against the bottom end of the second rotating member (401), a guide groove (502) is provided on the inner wall of the cavity along the axial direction of the fixed seat (501), a guide block is fixedly installed on the second rotating member (401), and the guide block is slidably installed in the guide groove (502).

5. The rotational reset structure according to claim 3, characterized in that: A buckle (404) is fixedly mounted on the second rotating member (401), and a recess (104) matching the buckle (404) is provided at the lower portion of the positioning cylinder (102).

6. The rotational reset structure according to claim 2, characterized in that: Limiting portions (403) are provided at both ends of the opening of the reset groove (402), and the bottom end of the reset block (302) matches the bottom of the reset groove (402).

7. The rotational reset structure according to claim 3, characterized in that: A limiting strip (103) is fixedly installed on the outer wall of the positioning cylinder (102) along the axial direction of the positioning cylinder (102).

8. A knob self-reset switch, comprising the rotary reset structure according to any one of claims 1 to 7, characterized in that: It also includes an encoder (601), which is fixedly connected to the rotating pitch-changing component so that the encoder (601) is driven to rotate when the rotating pitch-changing component rotates.

9. The knob self-reset switch according to claim 8, characterized in that: A sealing base (801) is fixedly installed below the encoder (601), an annular mounting groove (802) is provided at the bottom of the sealing base (801), and the fixing seat (501) is fixedly installed in the annular mounting groove (802).

10. The knob self-reset switch according to claim 9, characterized in that: A sealing rubber pad (701) is fixedly installed in the annular installation groove (802), and an annular fixing groove (702) for installing the fixing seat (501) is provided on the sealing rubber pad (701).

Images