Steering wheel switch generating roller hand feeling through magnetic force

Abstract

The utility model relates to a steering wheel switch capable of generating roller hand feeling through magnetic force, which comprises a shell, a PCB (printed circuit board), a support and rollers, the PCB and the support are mounted in the shell, and a magnetic switch is mounted on the PCB; the roller is rotatably installed on the support, a magnet frame is rotatably installed at the bottom of the support, a gear assembly is arranged on the support, the roller drives the magnet frame to rotate through the gear assembly, a magnet ring is fixedly installed on the magnet frame, the magnet ring synchronously rotates along with the magnet frame, and the magnet ring on the magnet frame corresponds to a magnetic switch on a PCB. The magnetic switch is used for detecting the magnetic field intensity and direction of the magnetic ring, and the support is provided with magnets on two sides of the magnetic ring. The magnetic ring and the magnet block are not in contact, physical friction is avoided, the service life is prolonged, good performance can be kept for a long time, and therefore the effect of simulating the hand feeling of a traditional roller is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steering wheel switch, and relates to a steering wheel switch generating the hand feeling of a scroll wheel through magnetic force. BACKGROUND

[0002] With the continuous progress of automobile technology and the increasing demand of users for the entertainment and intelligence of automobile functions, the functions of automobiles are becoming more and more rich. The traditional key type operation mode gradually cannot meet the demand in operation convenience and function integration, and a more efficient and convenient operation mode is needed to realize the control of various functions. For example, during driving, the driver needs to quickly adjust the volume of the sound, switch the display information of the instrument panel, set the cruise speed, etc., and the appearance of the steering wheel scroll wheel switch just meets these needs.

[0003] A steering wheel switch with a five-way scroll wheel is disclosed in the Chinese utility model patent file with the publication number CN221596258U, which comprises a shell, a base, a panel, a PCB board, a bracket and a scroll wheel. The panel is installed on the upper part of the shell, the base is installed on the lower part of the shell, the PCB board is installed on the base, the bracket is arranged in the shell, and the scroll wheel is rotatably installed on the bracket. The scroll wheel can be up and down. The scroll wheel is installed on the bracket through a gear shaft, the other end of the gear shaft has a gear wheel, and the other end of the gear shaft is also sleeved with a gear spring piece. The two spring piece parts of the gear spring piece are in contact with the gear wheel. The gear wheel is provided with grooves and protrusions matched with the spring piece, so that the spring piece realizes the detent. When the scroll wheel is slid, the spring piece will be clamped into a new detent under the action of the elastic restoring force, thereby realizing the switching and positioning during rolling.

[0004] In the above patent file, the gear spring piece is in contact with the gear wheel, and when the scroll wheel is slid, a jamming feeling is generated. The pulley will not change due to slight vibration or external force interference, so as to ensure the stability of the operation. However, in the actual use process, the pressure of the spring piece on the gear wheel is loosened due to long-term consumption and wear, which increases the misoperation of the scroll wheel during use. Therefore, a new scheme is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, one of the purposes of the utility model is to provide a steering wheel switch generating the hand feeling of a scroll wheel through magnetic force.

[0006] The utility model provides a steering wheel switch generating the hand feeling of a scroll wheel through magnetic force, adopts the following technical scheme:

[0007] The application discloses a steering wheel switch capable of generating a roller feeling through magnetic force, and belongs to the technical field of switches.

[0008] By adopting the technical scheme, when the roller drives the magnet holder to rotate through the gear assembly, the magnetic ring also rotates. Since the magnetic ring is composed of a plurality of arc-shaped magnetic blocks and the S poles and the N poles are arranged at intervals, the magnetic field interaction between the magnetic ring, the S pole or the N pole magnet block fixed on the two sides and the magnetic switch on the PCB can periodically change. During the rotation of the roller to drive the rotation of the magnetic ring, the alternating change of different magnetic poles of the magnetic ring can be accurately inducted by the magnetic switch, so that the corresponding circuit signal can be accurately triggered, the switch function can be reliably and accurately realized, and the possibility of misoperation can be reduced.

[0009] Preferably, a gear shaft is arranged on the roller, an installation groove is formed in the roller, the gear shaft passes through the installation groove and is clamped with the installation groove, and the gear shaft is clamped with the roller and rotationally arranged on the support.

[0010] By adopting the technical scheme, the gear shaft is clamped with the roller and rotationally arranged on the support, the freedom of the roller is limited, the roller can only stably rotate around the gear shaft, and the accuracy and reliability of operation are achieved.

[0011] Preferably, the gear assembly comprises a driving gear, an intermediate gear and a driven gear, the driving gear is fixed at one end of the gear shaft, the intermediate gear is rotationally arranged on the support, and the driving gear is engaged with the intermediate gear; the driven gear is fixed at one end of the magnet holder away from the magnetic ring, and the driven gear is engaged with the intermediate gear.

[0012] By adopting the technical scheme, the gear transmission has high transmission efficiency and stability. When the roller rotates, the driving gear uniformly transmits power to the intermediate gear, the intermediate gear transmits power to the driven gear, and the magnet holder is driven to rotate. The accuracy of the magnetic switch in inducting the magnetic field change is realized.

[0013] Preferably, the driving gear is integrally formed at one end of the gear shaft, and the driven gear is integrally formed at one end of the magnet holder away from the magnetic ring.

[0014] By adopting the above technical scheme, when the driving gear is integrally formed at one end of the gear shaft and the driven gear is integrally formed at one end of the magnet holder, the traditional way of fixing the gear through a connecting piece is avoided. The integrally formed way can ensure the tight connection between the gear and the corresponding parts, and the stability of the entire gear transmission system is realized.

[0015] Preferably, a roller cover is mounted on the bracket, the roller cover is used to limit the roller, a roller groove is formed on the roller cover, and the roller is protrudingly arranged through the roller groove.

[0016] By adopting the above technical scheme, the roller cover limits the roller, which can avoid excessive axial or radial displacement of the roller during use. The roller cover can ensure that the roller always works stably within the working range.

[0017] Preferably, a clamping groove is formed on the side surface of the roller cover, the bracket is provided with a clamping block, the clamping groove and the clamping block are clamped and matched, and the roller cover is fixedly connected with the bracket.

[0018] By adopting the above technical scheme, the clamping structure can also accurately position the roller cover. The shape and size of the clamping groove and the clamping block are matched with each other, the roller cover can be accurately positioned at a predetermined position when being mounted on the bracket, the positional relationship between the roller groove on the roller cover and the roller is correct, and the roller can protrude normally and be convenient for the user to operate.

[0019] Preferably, the shell comprises a housing, a base and a panel, the base is mounted at the bottom of the housing, the panel is covered on the top of the housing, the bracket is mounted in the shell, the roller is protrudingly arranged relative to the housing, and the PCB board is located in the base.

[0020] By adopting the above technical scheme, the bracket mounted in the shell can provide support and fixing effect for other parts. The protruding arrangement of the roller makes the device convenient to move, the housing and the panel can provide physical protection for the internal bracket, the roller and the PCB board and other parts, the bracket can be fixed firmly in the shell, the influence of the vibration generated by the motor during operation on other parts is reduced, and the overall stability of the device is improved.

[0021] Preferably, a clamping block is formed on the outer side of the base, a first clamping hole is formed on the housing, and the clamping block and the first clamping hole are clamped and matched, so that the base and the housing are clamped.

[0022] By adopting the technical scheme, the clamping cooperation of the clamping block and the first clamping hole makes the installation process more simple and convenient compared with the traditional screw fixing mode, and the dismounting mode does not cause excessive damage to the base and the shell, facilitating subsequent installation and use.

[0023] Preferably, a second clamping hole is arranged outside the panel, a clamping column is arranged on the inner wall of the shell, and the second clamping hole and the clamping column are clamped and matched to clamp the panel and the shell.

[0024] By adopting the technical scheme, the clamping cooperation of the clamping block and the first clamping hole makes the installation process more simple and convenient compared with the traditional screw fixing mode, and the dismounting mode does not cause excessive damage to the base and the shell, facilitating subsequent installation and use.

[0025] In summary, the utility model has at least one of the following beneficial technical effects:

[0026] 1. When the roller is driven to rotate by the gear assembly, the magnet frame is also rotated. Since the magnetic ring is composed of multiple arc-shaped magnetic blocks and the S-pole and N-pole are arranged alternately, the magnetic field interaction between the magnetic ring, the fixed S-pole or N-pole on both sides and the magnetic switch on the PCB will produce periodic changes.

[0027] 2. The gear shaft is clamped with the roller and installed on the bracket, which limits the freedom of the roller, so that the roller can only rotate stably around the gear shaft. This prevents the roller from shaking, deviating and other unstable conditions during rotation, ensuring the accuracy and reliability of the operation.

[0028] 3. When the driving gear is integrally formed at one end of the gear shaft and the driven gear is integrally formed at one end of the magnet frame, the traditional fixing mode of the gear through a connecting piece is avoided. The integrally formed mode can ensure the tight connection between the gear and the corresponding components, realizing the stability of the entire gear transmission system. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the overall structure schematic view of the utility model;

[0030] Figure 2 is the exploded view of the utility model;

[0031] Figure 3 is the schematic view of the utility model for showing the magnetic pole distribution of the magnetic ring and the magnetic block;

[0032] Figure 4 is the structure schematic view of the utility model for showing the installation position of the magnetic block;

[0033] Figure 5 is the structure schematic view of the utility model for showing the gear assembly;

[0034] Figure 6 is a structural schematic view of the display shell;

[0035] Reference signs: 1, shell; 2, PCB board; 3, support; 30, clamping groove; 31, first clamping block; 4, roller; 41, mounting groove; 5, magnet holder; 51, magnetic ring column; 6, magnetic ring; 7, magnet block; 71, magnet groove; 8, magnetic switch; 10, roller cover; 11, panel; 111, first clamping hole; 112, roller hole; 12, shell; 121, clamping column; 122, second clamping hole; 13, base; 131, second clamping block; 14, gear assembly; 141, driving gear; 142, intermediate gear; 143, driven gear; 15, gear shaft; 16, rubber pad; 17, roller groove; DETAILED DESCRIPTION

[0036] The following will be described in detail with reference to the accompanying drawings Figures 1-6 The application is further described in detail.

[0037] The application discloses a steering wheel switch with a roller hand feeling generated by magnetic force.

[0038] Reference Figure 1 and Figure 2 A steering wheel switch with a roller hand feeling generated by magnetic force, comprising a shell 1, a PCB board 2, a support 3 and a roller 4, the PCB board 2 and the support 3 are installed in the shell 1, a magnetic switch 8 is installed on the PCB board 2; the roller 4 is rotatably installed on the support 3, a magnet holder 5 is rotatably installed at the bottom of the support 3, a gear assembly 14 is arranged on the support 3, the roller 4 drives the magnet holder 5 to rotate through the gear assembly 14, a magnetic ring 6 is fixedly installed on the magnet holder 5, the magnetic ring 6 rotates synchronously with the magnet holder 5, the magnetic ring 6 on the magnet holder 5 corresponds to the magnetic switch 8 on the PCB board 2, the magnetic switch 8 is used for detecting the magnetic field strength and direction of the magnetic ring 6, and the support 3 is provided with a magnet block 7 on each side of the magnetic ring 6.

[0039] Reference Figure 3 Specifically, the magnetic ring 6 is spliced by a plurality of arc-shaped magnetic blocks, the arc-shaped magnetic blocks have S poles and N poles respectively, the S poles and the N poles are sequentially and spacedly arranged along the circumference of the magnetic ring, the arc-shaped magnetic blocks are bonded to form the magnetic ring through epoxy resin glue, and the magnet blocks 7 on the two sides of the magnetic ring 6 also have S poles or N poles. In the embodiment, the S poles on the magnet blocks 7 are arranged towards the direction of the magnetic ring 6.

[0040] When the scroll wheel 4 is actuated, the magnet holder 5 is driven to rotate by the gear assembly 14, and the magnetic ring 6 is driven to rotate, and the magnetic pole change of the magnetic ring 6 is detected by the magnetic switch 8 and a signal is sent. When the S pole on the magnetic ring 6 is opposite to the S pole on the magnet block 7, the magnet block 7 and the magnetic ring 6 repel each other; when the N pole on the magnetic ring 6 is opposite to the S pole on the magnet block 7, the magnet block 7 attracts the magnetic ring 6, so that the magnetic ring 6 is fixed relative to the magnet block 7, and at this time, the scroll wheel 4 remains stationary.

[0041] By continuously actuating the scroll wheel 4, the scroll wheel 4 is rolled by the interaction between the magnetic ring 6 and the magnet block 7; at the same time, when the steering wheel switch is in a non-use state, the scroll wheel 4 can be kept stationary to avoid accidental touch. The magnetic attraction replaces the traditional elastic sheet, eliminating friction and collision, and the operation is quiet and reliable. The operating load can be adjusted by changing the magnetization strength of the magnet, and the adjustment is convenient.

[0042] With reference to Figure 2 and Figure 4 , the support 3 is provided with a gear shaft 15, and the scroll wheel 4 is provided with a mounting groove 41, the gear shaft 15 passes through the mounting groove 41 and is clamped with the mounting groove 41, so that the gear shaft 15 is fixed with the scroll wheel 4, and synchronous rotation of the scroll wheel 4 and the gear shaft 15 is realized, and the two ends of the gear shaft 15 are respectively lapped on the support 3 and are rotatably installed on the support 3; at the same time, one end of the gear shaft 15 is connected with the gear assembly 14, and when the scroll wheel 4 is actuated, the power is transmitted to the gear assembly 14 by the gear shaft 15.

[0043] One end of the magnet holder 5 is provided with a magnetic ring column 51 for mounting the magnetic ring 6, the magnetic ring column 51 is a plastic columnar structure, a plurality of deformation grooves are spaced apart on the circumferential side of the magnetic ring column 51, the magnetic ring 6 is clamped and fixed on the magnetic ring column 51 by inwardly extruding the magnetic ring column 51 to cause elastic deformation of the magnetic ring column 51. The support 3 is provided with a magnet groove 71 on both sides of the magnetic ring 6, and the magnet block 7 is embedded in the magnet groove 71.

[0044] When the scroll wheel is rolled, the magnet holder 5 is driven to rotate by the gear assembly 14, so that the magnetic ring column 51 at one end of the magnet holder 5 drives the magnetic ring 6 to rotate.

[0045] With reference to Figure 4 and Figure 5 , the gear assembly 14 comprises a driving gear 141, an intermediate gear 142 and a driven gear 143, the driving gear 141 is clamped and fixed at one end of the gear shaft 15, the intermediate gear 142 is rotatably installed on the support 3, and the intermediate gear 142 is engaged with the driving gear 141; the driven gear 143 is fixedly connected with the magnet holder 5, the driven gear 143 is located at one end of the magnet holder 5 away from the magnetic ring 6, and the driven gear 143 is engaged with the intermediate gear 142.

[0046] When the dial roller 4 is actuated, the driving gear 141 on the gear shaft 15 drives the intermediate gear 142 to rotate, which in turn drives the driven gear 143 to rotate, and the driven gear 143 drives the magnetic ring column 51 on the magnet holder 5 to rotate, so that the magnetic ring column 51 drives the magnetic ring 6 to rotate. The gear transmission has high precision and stable transmission ratio. In this example, the driving gear 141 is integrally formed at one end of the gear shaft 15, and the driven gear 143 is integrally formed at the end of the magnet holder 5 away from the magnetic ring 6.

[0047] With reference to Figure 2 The bracket 3 is provided with a roller cover 10, the roller cover 10 is provided with a roller groove 17, the roller 4 is located in the roller groove 17, and the roller 4 is protrudingly arranged relative to the roller cover 10. The roller cover 10 protects the roller 4 from swinging left and right, and is used for limiting the roller 4. The roller cover 10 is provided with a clamping groove 30, the bracket 3 is provided with a first clamping block 31, the clamping groove 30 is clamped and matched with the first clamping block 31, so as to fix the roller cover 10 and the bracket 3.

[0048] With reference to Figure 6 The shell 1 comprises a shell body 12, a base 13 and a panel 11. The shell body 12 is a hollow square shell structure, the base 13 is installed at the bottom of the shell body 12, and the panel 11 covers and is clamped at the top of the shell body 12 to close the shell body 12. The bracket 3 is installed in the shell body 12, the roller 4 and the roller cover 10 are protrudingly arranged relative to the shell body 12, and the PCB board 2 is located in the base 13.

[0049] The base 13 is provided with a rubber pad 16 located at the bottom of the PCB board 2, which protects the PCB board 2. The base 13 is provided with six second clamping blocks 131, two of which are arranged on each of the two sides along the axis of the roller 4, and one of which is arranged on each of the remaining two sides. The shell body 12 is provided with first clamping holes 122 corresponding in number and position to the second clamping blocks 131. The second clamping blocks 131 and the first clamping holes 122 are clamped and matched, so that the base 13 and the shell body 12 are clamped.

[0050] The panel 11 is provided with second clamping holes 111, and the inner wall of the shell body 12 is provided with clamping columns 121. The clamping columns 121 are arranged in four, one on each of the two sides along the axis of the roller 4, and one on each of the remaining two sides. The second clamping holes 111 and the clamping columns 121 are clamped and matched, so that the panel 11 and the shell body 12 are clamped. The panel 11 is provided with a roller hole 112, and the roller 4 and the roller cover 10 are extended from the roller hole 112 and used.

[0051] The implementation principle of the embodiment of the present application is: when the user rotates the scroll wheel 4, the internal gear shaft 15 is rotated in cooperation with the driving gear 141, the driving gear 141 drives the intermediate gear 142 and the driven gear 143 to rotate, so that the driven gear 143 drives the magnetic ring 6 at one end of the magnet frame 5 to rotate, and the magnetic ring 6 and the magnet block 7 interact with each other, thereby realizing the steering wheel switch with the scroll wheel hand feeling generated by the magnetic force, and the magnetic switch 8 on the PCB board 2 detects and sends a signal.

[0052] The steering wheel switch with the scroll wheel hand feeling generated by the magnetic force designed above will not have the problems of scroll wheel loosening, accidental touch and the like, and the friction and collision are eliminated, the operation sound is quiet, the operation load is adjusted by changing the magnetization strength of the magnet, the adjustment is more convenient, and the user experience is greatly improved.

[0053] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A steering wheel switch generating a roller feeling by magnetic force, characterized by, The utility model provides a magnetic switch and the magnetic ring of the magnetic switch are matched, the magnetic ring is composed of a plurality of arc magnetic blocks, the arc magnetic blocks are provided with S pole and N pole respectively, and the S pole and N pole are arranged in sequence and are spaced apart in the circumferential direction of the magnetic ring, and the magnetic block (7) is arranged on the both sides of the magnetic ring (6) of the support (3), and the S pole or N pole on the magnetic block (7) is arranged towards the direction of the magnetic ring (6).

2. A steering wheel switch generating a roller feeling by magnetic force according to claim 1, wherein The gear assembly (14) comprises a driving gear (141), an intermediate gear (142) and a driven gear (143), the driving gear (141) is fixed at one end of the gear shaft (15), the intermediate gear (142) is rotatably installed on the support (3), and the driving gear (141) is engaged with the intermediate gear (142); the driven gear (143) is fixed at one end of the magnet frame (5) away from the magnetic ring (6), and the driven gear (143) is engaged with the intermediate gear (142).

3. A steering wheel switch generating a roller feeling by magnetic force according to claim 2, characterized in that, The driving gear (141) is integrally formed at one end of the gear shaft (15), and the driven gear (143) is integrally formed at one end of the magnet frame (5) away from the magnetic ring (6).

4. The steering wheel switch that generates a roller feeling by a magnetic force according to claim 3, characterized by, The support (3) is provided with a roller cover (10), the roller cover (10) is used for limiting the roller (4), the roller cover (10) is provided with a roller groove (17), and the roller (4) is protrudingly arranged through the roller groove (17).

5. The steering wheel switch generating a roller feeling by magnetic force according to claim 1, wherein The side surface of the roller cover (10) is provided with a clamping groove (30), the support (3) is provided with a first clamping block (31), the clamping groove (30) is clamped and matched with the first clamping block (31), the roller cover (10) and the support (3) are fixedly connected.

6. A steering wheel switch generating a roller feeling by magnetic force according to claim 5, wherein The shell (1) comprises a shell body (12), a base (13) and a panel (11), the base (13) is installed at the bottom of the shell body (12), the panel (11) is covered on the top of the shell body (12), the support (3) is installed in the shell body (12), the roller (4) is protrudingly arranged relative to the shell body (12), and the PCB board (2) is located in the base (13).

7. The steering wheel switch that generates a roller feeling by a magnetic force according to claim 1, wherein ​ 8. A steering wheel switch generating a roller feeling by magnetic force according to claim 7, wherein The second clamping block (131) is formed outside the base (13), a first clamping hole (122) is formed on the shell (12), and the second clamping block (131) and the first clamping hole (122) are clamped and matched, so that the base (13) is clamped with the shell (12).

9. The steering wheel switch that generates a roller feeling by a magnetic force according to claim 7, wherein The second clamping hole (111) is arranged outside the panel (11), the clamping column (121) is arranged on the inner wall of the shell (12), and the second clamping hole (111) and the clamping column (121) are clamped and matched, so that the panel (11) is clamped with the shell (12).

Images