Magnetic reset knob switch

Abstract

The invention provides a magnetic reset knob switch, and belongs to the technical field of knob switches, the magnetic reset knob switch comprises a rotating member, a fixed member and a magnetic assembly, the rotating member is rotatably arranged relative to the fixed member, and the magnetic assembly comprises a first magnet and a second magnet; the first magnet and the second magnet are arranged between the rotating part and the fixed part along the rotating track of the rotating part, when the rotating part rotates, one of the first magnet and the second magnet rotates along with the rotating part, and the other of the first magnet and the second magnet is limited and cannot rotate, so that the first magnet and the second magnet generate a magnetic attraction effect along the rotating track of the rotating part. The pre-tightening device is used for pre-tightening and resetting the rotating part; hand feeling and resetting of the switch are achieved through attraction force of the magnets, performance is stable and reliable, the magnets are long in service life, hand feeling decline after a traditional spring structure is used for a long time is avoided, and the service life of the switch is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of knob switches, and in particular to a magnetic reset knob switch. Background Art

[0002] With the diversification of automobile technology, users' requirements for the user experience of automobile switches are gradually increasing. The switch operation form, operation feel, service life, etc. have become issues that people are concerned about during use. The knob switch is a common switch device that realizes the on and off of the circuit or the switching of modes by rotation. Its structure usually includes a rotatable dial or knob, which is connected to the electrical contacts through a linkage mechanism.

[0003] In the existing knob switch structure, the reset function is usually realized by using a torsion spring, a reed, rubber, etc. This structure has a stiff feel and will experience a problem of feel degradation after long-term use. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a magnetic reset knob switch.

[0005] The technical solution adopted by the present invention is as follows: The present application provides a magnetic reset knob switch, comprising a rotating part, a fixed part and a magnetic assembly, wherein the rotating part is rotatably arranged relative to the fixed part, and the magnetic assembly comprises a first magnet and a second magnet, wherein the first magnet and the second magnet are arranged between the rotating part and the fixed part along a rotation trajectory of the rotating part, and when the rotating part rotates, one of the first magnet and the second magnet follows the rotating part to rotate, and the other is restricted from rotating, so that the two produce a magnetic attraction along the rotation trajectory of the rotating part, which is used to realize pre-tightening and resetting of the rotating part.

[0006] In some embodiments, the first magnet and the second magnet are both provided with a linkage block and a first limiting groove, the rotating member is provided with a linkage arm matched with the linkage block, and the fixed member is provided with a first limiting block matched with the first limiting groove;

[0007] When the rotating member rotates, the linkage arm drives the corresponding magnet to rotate through the linkage block, and the other magnet cannot rotate due to the restriction of the first limit block, so that the two magnets are separated.

[0008] In some embodiments, a track portion is provided on the rotating member along the rotation track of the first magnet and the second magnet, and the first magnet and the second magnet are installed in the track portion so that the first magnet and the second magnet can only rotate.

[0009] In some embodiments, a linkage groove is provided on the linkage arm corresponding to the first magnet and the second magnet, and the linkage block can be rotated into or out of the linkage groove as the rotating member rotates.

[0010] In some embodiments, it also includes a shell, the first magnet and the second magnet are further provided with a second limiting groove, the inner wall of the shell is provided with a second limiting block adapted to the second limiting groove, and the first limiting groove and the second limiting groove are respectively provided on the inner periphery and the outer periphery of the corresponding magnet;

[0011] When the rotating member rotates, the linkage arm drives the corresponding magnet to rotate through the linkage block, and the other magnet cannot rotate due to the restriction of the first limit block and the second limit block, so that the two magnets are separated.

[0012] In some embodiments, the outer ring of the fixing member is provided with a positioning groove, and the inner wall of the outer shell is provided with a positioning protrusion matched with the positioning groove.

[0013] In some embodiments, a reset member is also included, and the reset member is used to assist the rotating member in resetting.

[0014] In some embodiments, there are two magnetic components that are symmetrically arranged on the rotating part. The reset part adopts a torsion spring, and its two ends are respectively abutted against the magnets of adjacent parts in the two magnetic components. When the rotating part rotates, the linkage arm drives the corresponding magnet to rotate through the linkage block, and the rotation of the magnet will compress the torsion spring.

[0015] In some embodiments, a shift assembly is also included, which includes a shift pin, a spring and a track body. One of the shift pin and the track body rotates with the rotating member, and the other is fixed to the fixed member. Under the action of the spring, the shift pin abuts against the track body. At least two grooves are provided on the track body, and the shift pin can abut against the grooves.

[0016] In some embodiments, there are two shift assemblies symmetrically arranged with respect to the rotation center of the rotating member, the track body and the fixed member are integrated, and the shift pin abuts against the inner ring of the track body. When the shift pin rotates with the rotating member, it can abut against each groove to achieve positioning and shifting effects.

[0017] The present invention at least includes the following beneficial effects: in the present invention, the feel and reset of the switch are achieved through the attraction force of the magnet, the performance is stable and reliable, the service life of the magnet is long, the feel degradation of the traditional spring structure after long-term use is avoided, and the life of the switch is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0019] Figure 1 An exploded view of a partial structure of a magnetic reset knob switch in the present invention;

[0020] Figure 2 is a schematic diagram of the first magnet and the second magnet in the present invention;

[0021] Figure 3 is a schematic diagram of a rotating member, a first magnet and a second magnet in the present invention;

[0022] Figure 4 is a schematic diagram of a housing in the present invention;

[0023] Figure 5 A schematic diagram of the structure of a magnetic reset knob switch in the present invention Figure 1 ;

[0024] Figure 6 is a schematic diagram of the gear assembly in the present invention;

[0025] Figure 7 A schematic diagram of the structure of a magnetic reset knob switch in the present invention Figure 2 ;

[0026] Figure 8 It is a cross-sectional view of a magnetic reset knob switch in the present invention. DETAILED DESCRIPTION

[0027] The following description provides specific application scenarios and requirements of this specification, with the purpose of enabling those skilled in the art to make and use the contents of this specification. Various local modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but to the widest scope consistent with the claims.

[0028] In the description of the present application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Secondly, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components and should not be understood as limitations on the embodiments of the present application.

[0030] In addition, the terms "installed", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components.

[0031] For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] Regarding the drawings of the present application, it should be clearly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of the present specification. It should also be understood that the drawings are not drawn to scale.

[0033] The current knob switch structure usually relies on torsion springs, reeds or rubber components to achieve the reset function. However, this design often results in a hard operating feel, and over time and with the increase in frequency of use, the feel will significantly decrease, affecting user experience and operating accuracy.

[0034] To solve this problem, Figures 1 to 8 As shown, a magnetic reset knob switch is provided in the present specification, including a rotating member 1, a fixed member 2 and a magnetic assembly, wherein the rotating member 1 is rotatably arranged relative to the fixed member 2, and the magnetic assembly includes a first magnet 3 and a second magnet 4. Preferably, the first magnet 3 and the second magnet 4 are made of neodymium iron boron magnets, and the two have the same structure, so as to facilitate mass production and reduce production costs.

[0035] Secondly, the first magnet 3 and the second magnet 4 are arranged between the rotating member 1 and the fixed member 2 along the rotation trajectory of the rotating member 1. The rotation trajectory is a circle formed along the rotation center of the rotating member 1. The first magnet 3 and the second magnet 4 are arc-shaped and arranged along the circle.

[0036] With such arrangement, when the rotating member 1 rotates, one of the first magnet 3 and the second magnet 4 rotates with the rotating member 1, while the other is restricted from rotating, so that the two produce a magnetic attraction along the rotation trajectory of the rotating member 1, which is used to realize the pre-tightening and resetting of the rotating member 1, and can realize the pre-tightening and resetting of the rotating member 1 in both bidirectional rotation.

[0037] Firstly, the feel and reset of the switch are achieved through the attraction of the magnet, and the performance is stable and reliable. In particular, the permanent magnet has a long service life, which avoids the deterioration of the feel of the traditional spring structure after long-term use and increases the life of the switch.

[0038] Secondly, when the first magnet 3 is separated from the second magnet 4, there is a more obvious operational feedback and a smoother operating feel, which reduces the stiff feeling in the traditional knob switch.

[0039] Additionally, unlike mechanical components, magnets do not require lubrication or frequent maintenance, reducing the complexity and cost of product maintenance.

[0040] In some embodiments, the first magnet 3 and the second magnet 4 are both provided with a linkage block 5 and a first limiting groove 6, the rotating member 1 is provided with a linkage arm 7 that cooperates with the linkage block 5, and the fixed member 2 is provided with a first limiting block 8 that matches the first limiting groove 6. When the rotating member 1 rotates, the linkage arm 7 drives the corresponding magnet to rotate through the linkage block 5, and the other magnet cannot rotate due to the restriction of the first limiting block 8, thereby separating the two magnets. With such a setting, the relative positions of the two magnets during rotation can be accurately controlled, stable magnetic attraction and separation functions can be achieved, and the reliability of knob resetting can be ensured. Secondly, magnetic resetting provides a natural and smooth operating feel, reducing the sudden jump or jamming that may occur in traditional mechanical structures.

[0041] In some embodiments, the rotating member 1 is detachably connected to a knob 24 , for example, the knob 24 is plugged into the rotating member 1 , and the rotation of the rotating member 1 can be controlled by the knob 24 .

[0042] In some embodiments, Figure 3 As shown, a track portion 9 is provided on the rotating member 1 along the rotation track of the first magnet 3 and the second magnet 4. The first magnet 3 and the second magnet 4 are installed in the track portion 9, so that the first magnet 3 and the second magnet 4 can only rotate. The track portion 9 limits the movement range of the magnets so that they can only rotate along a predetermined track, thereby achieving more precise magnetic control and ensuring that the reset process of the knob is stable and reliable. Secondly, the installation and layout of the magnets can be optimized to make the entire switch device structure more compact.

[0043] Optionally, the inner and outer peripheries of the first magnet 3 and the second magnet 4 are both protruded with the linkage blocks 5, and at the same time, the inner and outer peripheries of the track portion 9 are correspondingly provided with the linkage arms 7. In this way, when the rotating member 1 rotates, the two linkage arms 7 drive the linkage blocks 5 to rotate the magnets, which can make the rotation of the magnets more stable and reliable.

[0044] In some embodiments, a linkage groove 10 is provided on the linkage arm 7 corresponding to the first magnet 3 and the second magnet 4, and the linkage block 5 can be rotated into or out of the linkage groove 10 following the rotation of the rotating member 1. Figure 5 As shown, the linkage arm 7 on the outer periphery of the track portion 9 is L-shaped, and the linkage groove 10 can be formed thereon, which helps to limit the magnet and improve the precision of the magnet movement. Secondly, the connection between the magnet and the rotating member 1 does not require fasteners, and is easy to disassemble and adjust.

[0045] Furthermore, it also includes a shell 11, the first magnet 3 and the second magnet 4 are further provided with a second limiting groove 12, the inner wall of the shell 11 is provided with a second limiting block 13 adapted to the second limiting groove 12, the first limiting groove 6 and the second limiting groove 12 are respectively provided on the inner periphery and the outer periphery of the corresponding magnet, Figure 2 As shown, the first limit groove 6 is the lower end of the inner circumference, and the second limit groove 12 is located at the upper end of the outer circumference. When the rotating member 1 rotates, the linkage arm 7 drives the corresponding magnet to rotate through the linkage block 5, and the other magnet cannot rotate due to the restriction of the first limit block 8 and the second limit block 13, thereby separating the two magnets. This arrangement forms a diagonal limit for the magnet that needs to be fixed, greatly improving its stability.

[0046] In some embodiments, the outer ring of the fixing member 2 is provided with a positioning groove 14, and the inner wall of the housing 11 is provided with a positioning protrusion 15 adapted to the positioning groove 14. Preferably, the positioning groove 14 and the positioning protrusion 15 can be provided in multiple groups, such as Figure 4 and Figure 7 As shown, there are two groups of positioning grooves 14 and positioning protrusions 15 and they are symmetrically arranged in a straight line. At the same time, there are also second positioning grooves 22 and second positioning protrusions 23. The second positioning grooves 22 and the second positioning protrusions 23 are also two groups and they are symmetrically arranged in a straight line, so that the upper end and the lower end of the fixing member 2 are positioned respectively.

[0047] In some embodiments, a reset member 16 is also included, and the reset member 16 is used to assist the rotating member 1 in resetting. For example, there are two magnetic components and they are symmetrically arranged on the rotating member 1. The reset member 16 adopts a torsion spring, and its two ends are respectively abutted against the magnets of adjacent parts in the two magnetic components. When the rotating member 1 rotates, the linkage arm 7 drives the corresponding magnet to rotate through the linkage block 5. The rotation of the magnet compresses the torsion spring. In this way, the torsion spring is used to assist in resetting, so as to avoid the problem that the magnetic attraction force is weakened due to the large separation interval between the first magnet 3 and the second magnet 4, thereby failing to reset.

[0048] Among them, Figure 4 and Figure 8 As shown, a torsion spring positioning column 23 is provided on the housing 11, and an opening for the torsion spring positioning column 23 to pass through is provided on the rotating member 1, and when the rotating member 1 rotates, the torsion spring positioning column 23 can slide in the opening, which not only positions the torsion spring, but also limits the rotation range of the knob.

[0049] Furthermore, it also includes a shift assembly, which includes a shift pin 17, a spring 18 and a track body 19. One of the shift pin 17 and the track body 19 rotates with the rotating member 1, and the other is fixed to the fixed member 2. Under the action of the spring 18, the shift pin 17 abuts against the track body 19. The track body 19 is provided with at least two grooves 20. The shift pin 17 can abut against the grooves 20, wherein the two grooves 20 are used to locate the initial position and limit the final position to improve the rapid change of the hand feel after the magnet is separated. Preferably, the front end of the shift pin 17 is set as a dome, and the rear end thereof is provided with a spring mounting groove for the spring 18 to be embedded.

[0050] With this arrangement, the gear assembly not only solves the problem of single hand feel, but also improves the user experience through elastic feedback.

[0051] Preferably, there are two shift assemblies which are symmetrically arranged with respect to the rotation center of the rotating member 1. The track body 19 and the fixing member 2 are integrated and the two can be one part. The shift pin 17 abuts against the inner ring of the track body 19. When the shift pin 17 rotates with the rotating member 1, it can abut against each groove 20 to achieve positioning and shifting effects.

[0052] It should be understood that the shift assembly may also have another structure: a separate track body 19 is provided, the track body 19 rotates with the rotating member 1 or the knob 24, and the shift pin 17 may abut against the inner ring or outer ring of the track body 19, but this structure will increase the volume of the switch, and therefore the structure of the aforementioned shift assembly is preferred.

[0053] The friction of the knob switch with gear feel is usually difficult to eliminate, and the knob switch with gear feel usually has no reset function. The knob switch in this specification realizes the feel and reset of the switch through the attraction of the magnet, and uses the torsion spring to assist the reset. At the same time, the gear pin structure is used to ensure the initial positioning preload and the final buffer limit impact. Specifically, after the knob 24 is twisted, it drives the rotating part 1 to rotate, and the linkage arm 7 on the rotating part 1 drives one of the magnets of the linkage block 5 to rotate and compress the torsion spring. The other magnet cannot move due to the restriction of the first limit block 8 and the second limit block 13. When the knob is released, the torsion spring elastic force is released to push the magnet back a distance. After the first magnet 3 and the second magnet 4 are close to each other, the attraction will push the linkage arm 7 through the linkage block 5 to drive the rotating part 1 and the knob to reset, and the reverse is the same. Secondly, the shift pin 17 is connected to the rotating part 1 or the knob 24 through the spring 18, and its front end abuts against the V-shaped track of the track body 19 to ensure that the switch is not loose at the beginning. After turning the switch, a groove is designed at the end of the track body 19 to reduce the resistance of the track body, thereby achieving a buffer switch and reducing operating noise.

[0054] In some embodiments, a roller is provided at the front end of the shift pin 17 in the shift assembly, and the roller includes a rotating shaft portion and a rolling portion sleeved on the rotating shaft portion, and the two portions are integrated into one by two-color injection molding, the rotating shaft portion is made of plastic material, and the rolling portion is made of rubber material. With such a configuration, the contact surface of the roller is made of soft rubber material, which has a soft feel and a suction feeling during operation. Secondly, the vibration generated by the collision between the roller and the track body 19 during operation is coupled by the soft rubber, which reduces the operating sound, and part of the impact force during operation is absorbed by the soft rubber, which reduces the risk of shifting gears. In addition, the roller is light in weight as a whole, low in cost and does not require assembly.

[0055] Secondly, the roller adopts two-color injection molding: the first color is plastic material, which ensures the structural strength of the roller and the smoothness of matching the gear pin.

[0056] Preferably, the roller is integrally injection molded at the front end of the shift pin 17 and is rotatably arranged relative to the shift pin 17. In this way, there is rolling friction between the roller shift pin and the track body 19, and the operation feels smoother than a conventional shift pin. At the same time, compared with the roller being assembled at the front end of the shift pin, the use of integral injection molding can simplify the assembly process and avoid the roller being offset due to the assembly gap, which affects the use feel.

[0057] It should be understood that how the knob switch realizes the on / off of the circuit or the switching of the mode can refer to the knob switch in the prior art. Generally, it is necessary to connect a contact piece on the rotating part 1 or the knob 24, and cooperate with the circuit on the circuit board through the contact piece.

[0058] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented only by way of example and may not be restrictive. Although not explicitly stated herein, those skilled in the art will appreciate that the requirements of this application encompass various reasonable changes, improvements and modifications to the embodiments. These changes, improvements and modifications are intended to be proposed by the present application and are within the spirit and scope of the exemplary embodiments of the present application.

[0059] In addition, it should be understood that in the foregoing description of the embodiments of the present application, in order to help understand a feature and for the purpose of simplifying the present application, the present application combines various features in a single embodiment, drawing or its description. However, this does not mean that the combination of these features is necessary. When reading the present application, it is entirely possible for a person skilled in the art to mark out a part of the devices as a separate embodiment. In other words, the embodiments in the present application can also be understood as the integration of multiple secondary embodiments. This is also true when the content of each secondary embodiment is less than all the features of a single aforementioned disclosed embodiment.

[0060] Finally, it should be understood that the embodiments of the application disclosed herein are explanations of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in the present application to implement the application in the present application. Therefore, the embodiments of the present application are not limited to the embodiments accurately described in the application.

Claims

1. A magnetic reset knob switch, characterized in that: The invention comprises a rotating member (1), a fixed member (2) and a magnetic assembly, wherein the rotating member (1) is rotatably arranged relative to the fixed member (2), and the magnetic assembly comprises a first magnet (3) and a second magnet (4), wherein the first magnet (3) and the second magnet (4) are arranged between the rotating member (1) and the fixed member (2) along the rotation trajectory of the rotating member (1); when the rotating member (1) rotates, one of the first magnet (3) and the second magnet (4) rotates with the rotating member (1) and the other is restricted from rotating, so that the two generate a magnetic attraction along the rotation trajectory of the rotating member (1), so as to realize pre-tightening and resetting of the rotating member (1).

2. A magnetic reset knob switch according to claim 1, characterized in that: The first magnet (3) and the second magnet (4) are both provided with a linkage block (5) and a first limiting groove (6); the rotating member (1) is provided with a linkage arm (7) matched with the linkage block (5); and the fixed member (2) is provided with a first limiting block (8) matched with the first limiting groove (6); When the rotating member (1) rotates, the linkage arm (7) drives the corresponding magnet to rotate via the linkage block (5), while the other magnet cannot rotate due to the restriction of the first limit block (8), thereby separating the two magnets.

3. A magnetic reset knob switch according to claim 2, characterized in that: A track portion (9) is provided on the rotating member (1) along the rotation track of the first magnet (3) and the second magnet (4); the first magnet (3) and the second magnet (4) are installed in the track portion (9) so that the first magnet (3) and the second magnet (4) can only rotate.

4. A magnetic reset knob switch according to claim 3, characterized in that: The linkage arm (7) is provided with a linkage groove (10) corresponding to the first magnet (3) and the second magnet (4), and the linkage block (5) can be rotated into or out of the linkage groove (10) following the rotation of the rotating member (1).

5. A magnetic reset knob switch according to claim 2, 3 or 4, characterized in that: It also comprises a shell (11), the first magnet (3) and the second magnet (4) are further provided with a second limiting groove (12), the inner wall of the shell (11) is provided with a second limiting block (13) adapted to the second limiting groove (12), and the first limiting groove (6) and the second limiting groove (12) are respectively provided on the inner periphery and the outer periphery of the corresponding magnet; When the rotating member (1) rotates, the linkage arm (7) drives the corresponding magnet to rotate via the linkage block (5), while the other magnet cannot rotate due to the restriction of the first limit block (8) and the second limit block (13), thereby separating the two magnets.

6. A magnetic reset knob switch according to claim 5, characterized in that: The outer ring of the fixing member (2) is provided with a positioning groove (14), and the inner wall of the outer shell (11) is provided with a positioning protrusion (15) matched with the positioning groove (14).

7. The magnetic reset knob switch according to claim 2, characterized in that: It also comprises a reset member (16), wherein the reset member (16) is used to assist the rotating member (1) in resetting.

8. The magnetic reset knob switch according to claim 7, characterized in that: There are two magnetic assemblies which are symmetrically arranged on the rotating member (1); the reset member (16) is a torsion spring, and its two ends are respectively in contact with the magnets of adjacent members in the two magnetic assemblies; when the rotating member (1) rotates, the linkage arm (7) drives the corresponding magnet to rotate through the linkage block (5), and the rotation of the magnet compresses the torsion spring.

9. A magnetic reset knob switch according to claim 2 or 7, characterized in that: The invention also comprises a shift assembly, wherein the shift assembly comprises a shift pin (17), a spring (18) and a track body (19), wherein one of the shift pin (17) and the track body (19) rotates with the rotating member (1), and the other is fixed to the fixed member (2), and under the action of the spring (18), the shift pin (17) abuts against the track body (19), and the track body (19) is provided with at least two grooves (20), and the shift pin (17) can abut against the grooves (20).

10. The magnetic reset knob switch according to claim 9, characterized in that: The shifting assemblies are two and are symmetrically arranged with respect to the rotation center of the rotating member (1); the track body (19) and the fixing member (2) are integrated; the shifting pin (17) abuts against the inner ring of the track body (19); when the shifting pin (17) rotates with the rotating member (1), it can abut against each groove (20) to achieve positioning and shifting effects.

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