A hands-off sensing steering wheel and a control method thereof

Abstract

The application discloses a hand-off sensing steering wheel and a control method thereof, and belongs to the field of automobiles, which comprises a steering wheel body, a handle one arranged at the rear of the steering wheel body, a handle two arranged at the front of the steering wheel body, the handle one and the handle two are both arranged in a U shape, a threaded transmission sleeve arranged at the right side of the steering wheel body, a rotating sleeve spirally transmitted on the outer surface of the threaded transmission sleeve, a fixing sleeve arranged at the right side of the rotating sleeve, the rotating sleeve is rotationally connected with the fixing sleeve, and a motor fixedly installed at the right end of the fixing sleeve. The contraction mechanism one is arranged, the output shaft of the motor drives the gear one to rotate, so that the rotating sleeve rotates, the threaded transmission sleeve is retracted into the interior of the rotating sleeve through the threaded transmission of the rotating sleeve and the threaded transmission sleeve, meanwhile, the steering wheel body is retracted into the instrument panel direction, so that the space occupied by the steering wheel body is reduced, the space of the cockpit is saved, and the comfort of the driver is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobiles, and more particularly, to a hands-off sensing steering wheel and a control method thereof. BACKGROUND

[0002] With the development of electronic technology, automobile automatic driving has become the development situation of future automobiles. For an automatic driving automobile, a steering wheel is no longer a necessity. The reduction of the steering wheel can save more space for the interior of the automobile. However, a part of drivers still hope to retain the fun of manual driving. At this time, the steering wheel is essential. Therefore, in order to meet the needs of the two groups of people, we need a steering wheel that can be stored when the automobile is in an automatic driving mode, so as not to occupy the interior space, and can be extended when the automobile is in a manual driving mode to meet the driving fun of the driver.

[0003] A Chinese patent with the authorized publication number CN106627724B discloses a telescopic and foldable steering wheel mechanism. The steering wheel is pushed outwards and retracted inwards by a lifting motor connected to the steering wheel. The rotation of the steering wheel is driven by a rotating motor connected to the steering wheel, so that the steering wheel can be stored when the automobile is in an automatic driving mode, and can be extended when the automobile is in a manual driving mode.

[0004] With the development of technology, the unmanned driving technology is becoming mature. When the automobile enters the unmanned driving state, the driver's hand leaves the steering wheel and is operated by the computer without manual operation. At this time, the steering wheel is particularly conspicuous and occupies a lot of space in the cockpit. Therefore, a hands-off sensing steering wheel is needed, which can automatically enter the unmanned driving state after sensing that the driver's hand leaves the steering wheel and can fold and retract the steering wheel, so as to normally use the steering wheel in the manual driving scene and reduce the occupied space of the steering wheel in the automatic driving scene, saving the space of the cockpit.

[0005] Therefore, a hands-off sensing steering wheel and a control method thereof are provided. SUMMARY

[0006] In view of the problems in the prior art, the purpose of the present application is to provide a hands-off sensing steering wheel and a control method thereof, which can achieve the above purposes.

[0007] To solve the above problems, the present application adopts the following technical solutions.

[0008] The hand-off induction steering wheel, including the steering wheel body, the rear of the steering wheel body is provided with handle one, the front of the steering wheel body is provided with handle two, the handle one and handle two are all arranged in U type, the right side of the steering wheel body is provided with threaded transmission sleeve, the outer surface of the threaded transmission sleeve is screw driven with rotating sleeve, the right side of the rotating sleeve is provided with fixed sleeve, the rotating sleeve is rotatably connected with the fixed sleeve, the right end of the fixed sleeve is fixedly installed with motor, the inside of the threaded transmission sleeve is provided with threaded rod one, the threaded rod one extends to the inside of the rotating sleeve and is provided with contraction mechanism one between the rotating sleeve, the threaded rod one and the steering wheel body one are provided with folding mechanism, the right end surface of the steering wheel body is rotatably connected with worm in the middle of the threaded rod one, the worm and the threaded rod one are provided with universal joint mechanism, the inside of the steering wheel body is provided with contraction mechanism two, the worm penetrates the steering wheel body one and extends to the inside and is drivingly connected with the contraction mechanism two, the handle one and handle two all penetrate the steering wheel body and extend to the inside and are drivingly connected with the contraction mechanism two, the outer surface of the handle one and handle two is provided with inductor, the inside of the steering wheel body is provided with hand-off induction module, the inductor and the hand-off induction module are electrically connected through wire, the hand-off induction module and the motor are electrically connected through wire.

[0009] Further, the contraction mechanism one includes gear one arranged on the inside right side of the rotating sleeve, the output shaft of the motor penetrates the fixed sleeve and extends to the inside of the rotating sleeve and is fixedly connected with the gear one, the inner wall of the rotating sleeve is fixedly installed with gear ring corresponding to the gear one, the gear one and the gear ring are mutually engaged.

[0010] Further, the contraction mechanism one further includes taper gear one fixedly installed on the right end of the threaded rod one, the lower end of the rear end of the threaded transmission sleeve is fixedly installed with connecting piece three, the upper end of the connecting piece three is fixedly installed with fixed shaft two, the outer surface of the fixed shaft two is rotatably connected with gear two, the upper end of the gear two is fixedly installed with taper gear two, the taper gear one and the taper gear two are mutually engaged.

[0011] Further, the left end of the fixed sleeve is fixedly installed with rack corresponding to the gear two, the rack and the gear two are mutually engaged, the right end of the threaded transmission sleeve is provided with socket corresponding to the rack.

[0012] Further, the folding mechanism includes slot opening on the upper end of the threaded transmission sleeve, the outer surface of the threaded rod one is screw driven with threaded sleeve, the upper end of the threaded sleeve is fixedly connected with connecting piece four, the connecting piece four is slidingly connected in the inside of the slot, the rear end upper side of the steering wheel body is fixedly installed with fixing piece, the fixing piece and the connecting piece four are movably connected with connecting rod.

[0013] Further, the folding mechanism further comprises a connecting piece one fixedly installed on both sides of the left end of the threaded transmission sleeve, the outer sides of the two groups of connecting piece one are provided with connecting piece two, the two groups of connecting piece two are fixedly connected with the steering wheel body, the outer side of the connecting piece one is fixedly installed with a fixed shaft one, the fixed shaft one is rotationally connected with the connecting piece two, the connecting piece one is circularly arranged, and the fixing piece is arcuately arranged corresponding to the connecting piece one.

[0014] Further, the universal joint mechanism comprises a universal joint fork two fixedly installed at the left end of the threaded rod one, the worm is fixedly installed with a universal joint fork one at the right end, the universal joint fork one is arranged in the Y-axis direction, the universal joint fork two is arranged in the X-axis direction, and the universal joint fork one and the universal joint fork two are movably connected with a cross pin.

[0015] Further, the second contraction mechanism comprises a threaded rod two and a threaded rod three rotationally connected inside the steering wheel body, the threaded rod two is arranged on the upper side of the threaded rod three, the outer surface of the threaded rod three is fixedly installed with a transmission tooth one in the middle, the outer surface of the threaded rod two is fixedly installed with a transmission tooth two in the middle, and the worm penetrates through the steering wheel body and extends to the inside to mesh with the transmission tooth one and the transmission tooth two for transmission.

[0016] Further, the second contraction mechanism further comprises a threaded groove one opened in the U-shaped upper end of the handle one, a threaded groove three opened in the U-shaped lower end of the handle one, a threaded groove two opened in the U-shaped upper end of the handle two, and a threaded groove four opened in the U-shaped lower end of the handle two, the U-shaped upper end and the lower end of the handle one penetrate through and extend to the inside of the steering wheel body, and the threaded groove one is screw transmission connected with the left end of the threaded rod one, the threaded groove three is screw transmission connected with the left end of the threaded rod two, the U-shaped upper end and the lower end of the handle two penetrate through and extend to the inside of the steering wheel body, and the threaded groove two is screw transmission connected with the right end of the threaded rod one, and the threaded groove four is screw transmission connected with the right end of the threaded rod two.

[0017] A hand-off sensing steering wheel control method, comprising the following steps:

[0018] S1: The steering wheel body is retracted: when entering the unmanned driving mode, the sensor senses that the driver's hand is away from the handle one and the handle two, the sensor transmits an electric signal to the hand-off sensing module, the hand-off sensing module synchronously starts the motor, the output shaft of the motor carries the gear one to rotate, thereby driving the rotating sleeve to rotate, the rotating sleeve retracts into the inside of the rotating sleeve, and the threaded transmission sleeve is synchronously rotated through the bevel gear one and the bevel gear two in the retracting process, thereby driving the folding mechanism;

[0019] S2: steering wheel main body folding: when the threaded rod one rotates, the threaded sleeve connected with the threaded rod one through the screw transmission on the outer surface will pull the steering wheel main body to deflect ninety degrees around the fixed shaft one through the connecting piece four and the connecting rod, so that the steering wheel main body is folded to reduce the space occupation, and the universal joint mechanism arranged between the threaded rod one and the worm can ensure that the steering wheel main body is folded while still being able to drive the contraction mechanism two;

[0020] S3: handle one and handle two contraction: the threaded rod one rotates to drive the worm through the universal joint mechanism, so that the worm drives the threaded rod two and the threaded rod three to rotate, and the threaded rod two and the threaded rod three are respectively screwed into the threaded groove one, the threaded groove two, the threaded groove three and the threaded groove four, so that the handle one and the handle two are retracted into the inside of the steering wheel main body.

[0021] Compared with the prior art, the advantages of the present application are:

[0022] (1) The present scheme sets up the contraction mechanism one, uses the output shaft of the motor to drive the gear one to rotate, so that the rotating sleeve rotates, the rotating sleeve is retracted into the inside of the rotating sleeve through the screw transmission of the threaded transmission sleeve, at the same time, the steering wheel main body is retracted towards the instrument panel, so as to reduce the space occupied by the steering wheel main body, save the space of the cockpit, and increase the comfort of the driver;

[0023] (2) The present scheme sets up the folding mechanism, uses the threaded rod one to rotate at the same time to drive the threaded sleeve to displace inward, the threaded sleeve pulls the steering wheel main body to deflect around the fixed shaft one through the connecting piece four and the connecting rod, deflects ninety degrees, and further reduces the space occupied by the steering wheel main body;

[0024] (3) The present scheme sets up the contraction mechanism two, uses the universal joint mechanism to drive the worm, and then drives the threaded rod two and the threaded rod three to rotate, the threaded rod two and the threaded rod three rotate at the same time to retract the handle one and the handle two into the inside of the steering wheel main body, further reducing the presence of the steering wheel main body, and saving the space of the cockpit. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall structure schematic diagram of the present application;

[0026] Figure 2 It is the overall mechanism section view of the present application;

[0027] Figure 3 It is the Figure 2 enlarged schematic view of A in the present application;

[0028] Figure 4 It is the Figure 2 enlarged schematic view of B in the present application;

[0029] Figure 5 Sectional view of folding mechanism of the present application;

[0030] Figure 6 Sectional view of folding mechanism of the present application; Figure 5 Enlarged view of C in the above figure;

[0031] Figure 7 Sectional view of folding mechanism of the present application; Figure 5 Enlarged view of D in the above figure;

[0032] Figure 8 Sectional view of folding mechanism of the present application;

[0033] Figure 9 Sectional view of folding mechanism of the present application; Figure 8 Enlarged view of E in the above figure;

[0034] Figure 10 Sectional view of folding mechanism of the present application; Figure 8 Enlarged view of F in the above figure;

[0035] Figure 11 Side view of the overall structure of the present application.

[0036] Explanation of figure numbers:

[0037] 1, steering wheel body; 2, handle one; 3, handle two; 4, threaded transmission sleeve; 5, rotating sleeve; 6, fixed sleeve; 7, motor; 8, connecting piece one; 9, connecting piece two; 10, fixed shaft one; 11, gear one; 12, toothed ring; 13, threaded rod one; 14, bevel gear one; 15, connecting piece three; 16, fixed shaft two; 17, gear two; 18, bevel gear two; 19, rack; 20, notch; 21, threaded sleeve; 22, connecting piece four; 23, fixed piece; 24, connecting rod; 25, worm; 26, universal joint fork one; 27, universal joint fork two; 28, cross pin; 29, threaded rod two; 30, threaded rod three; 31, transmission tooth one; 32, transmission tooth two; 33, threaded groove one; 34, threaded groove two; 35, threaded groove three; 36, threaded groove four. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] Please refer to Figures 1 to 11The utility model provides a kind of hand-off sensing steering wheel, including steering wheel body 1, the rear of steering wheel body 1 is provided with handle one 2, the front of steering wheel body 1 is provided with handle two 3, handle one 2 and handle two 3 are all arranged in U type, the right side of steering wheel body 1 is provided with threaded transmission sleeve 4, the outer surface of threaded transmission sleeve 4 is spirally driven with rotating sleeve 5, the right side of rotating sleeve 5 is provided with fixed sleeve 6, rotating sleeve 5 is rotatably connected with fixed sleeve 6, the right end of fixed sleeve 6 is fixedly installed with motor 7, the inside of threaded transmission sleeve 4 is provided with threaded rod one 13, threaded rod one 13 extends to the inside of rotating sleeve 5 and is provided with contraction mechanism one between rotating sleeve 5, threaded rod one 13 is provided with folding mechanism between steering wheel body 1 one, the right end surface middle part of steering wheel body 1 is rotatably connected with worm 25 corresponding threaded rod one 13, worm 25 is provided with universal joint mechanism between threaded rod one 13, the inside of steering wheel body 1 is provided with contraction mechanism two, worm 25 penetrates steering wheel body 1 one and extends to inside and is drivingly connected with contraction mechanism two, handle one 2 and handle two 3 all penetrate steering wheel body 1 and extend to inside and are drivingly connected with contraction mechanism two, contraction mechanism one includes the inside right side of rotating sleeve 5 and is provided with gear one 11, the output shaft of motor 7 penetrates fixed sleeve 6 and extends to the inside of rotating sleeve 5 and is fixedly connected with gear one 11, the inner wall of rotating sleeve 5 is fixedly installed with gear ring 12 corresponding gear one 11, gear one 11 and gear ring 12 are engaged with each other, contraction mechanism one further includes that threaded rod one 13 right end is fixedly installed with bevel gear one 14, threaded transmission sleeve 4 rear end lower side is fixedly installed with connecting piece three 15, the upper end of connecting piece three 15 is fixedly installed with fixed shaft two 16, the outer surface of fixed shaft two 16 is rotatably connected with gear two 17, the upper end of gear two 17 is fixedly installed with bevel gear two 18, bevel gear one 14 and bevel gear two 18 are engaged with each other, the left end of fixed sleeve 6 is fixedly installed with rack 19 corresponding gear two 17, rack 19 and gear two 17 are engaged with each other, threaded transmission sleeve 4 right end is provided with socket joint corresponding rack 19, the outer surface of handle one and handle two is provided with inductor, the inside of steering wheel body is provided with hand-off sensing module, inductor is electrically connected with hand-off sensing module by wire, hand-off sensing module is electrically connected with motor by wire.

[0040] By adopting the above technical scheme, firstly, it needs to be explained that the fixed sleeve 6 is fixedly connected with the automobile guide rod (the automobile guide rod is not drawn in the prior art figure), in order to increase the space of the cockpit, the folding mechanism is provided, the steering wheel body 1 is retracted to the instrument panel direction, thereby moving away from the driver, and the space of the cockpit is increased, and the comfort of the driver is improved, specifically: firstly, when the driver moves away from the steering wheel body 1, the sensor senses that the driver's hand is away from the handle 2 and the handle 3, the sensor transmits an electric signal to the hand-away sensing module, the hand-away sensing module synchronously starts the motor 7, the output shaft of the motor 7 carries the gear 11 to rotate, the gear 11 is meshed and transmitted with the tooth ring 12 fixedly installed on the inner wall of the rotating sleeve 5, thereby rotating the rotating sleeve 5 under the meshing and transmission of the tooth ring 12 and the gear 11, when the rotating sleeve 5 rotates, since the rotating sleeve 5 and the threaded transmission sleeve 4 are connected through spiral transmission, the threaded transmission sleeve 4 is retracted to the inside of the rotating sleeve 5 along with the rotation of the rotating sleeve 5, secondly, when the threaded transmission sleeve 4 is retracted to the inside of the rotating sleeve 5, the connecting piece three 15 carries the gear two 17 to be retracted to the inside of the rotating sleeve 5 synchronously, the gear two 17 is meshed with the rack 19, thereby rotating the gear two 17 in the process of retraction under the meshing and transmission of the rack 19, the bevel gear two 18 fixedly connected to the upper end of the gear two 17 is synchronously rotated, the bevel gear one 14 fixedly installed on the right end of the threaded rod one 13 is meshed and transmitted with the bevel gear two 18, so that the threaded rod one 13 is rotated, the threaded rod one 13 is transmissionally connected to the folding mechanism and the universal joint mechanism, the threaded transmission sleeve 4 is retracted to carry the steering wheel body 1 to move synchronously, thereby reducing the space occupied by the steering wheel body 1 in the automatic driving mode.

[0041] As shown in Figure 5 , Figure 11 and Figure 7 , the folding mechanism comprises that the upper end of the threaded transmission sleeve 4 is provided with a slot 20, the outer surface of the threaded rod one 13 is spirally transmissionally provided with a threaded sleeve 21, the upper end of the threaded sleeve 21 is fixedly connected with a connecting piece four 22, the connecting piece four 22 is slidingly connected in the inside of the slot 20, the rear end upper side of the steering wheel body 1 is fixedly installed with a fixed piece 23, the fixed piece 23 is movably connected with a connecting rod 24 between the connecting piece four 22, the folding mechanism further comprises that the left end of the threaded transmission sleeve 4 is fixedly installed with a connecting piece one 8, the outer sides of the two groups of connecting piece one 8 are provided with connecting piece two 9, the two groups of connecting piece two 9 are fixedly connected with the steering wheel body 1, the outer side of the connecting piece one 8 is fixedly installed with a fixed shaft one 10, the fixed shaft one 10 is rotationally connected with the connecting piece two 9, the connecting piece one 8 is circularly arranged, and the fixed piece 23 is correspondingly arranged in an arc shape with the connecting piece one 8.

[0042] By adopting the above technical scheme, in order to further reduce the space occupied by the steering wheel body 1 in the cockpit, the steering wheel body 1 is folded, so that the steering wheel body 1 can be folded by 90 degrees while being retracted, and the steering wheel body 1 is embedded in the instrument table, so that the space in the cockpit is further increased. Specifically, when the threaded rod one 13 rotates, the threaded sleeve 21 and the connecting piece four 22 move to the fixed sleeve 6 direction through the screw transmission effect of the threaded rod one 13 and the threaded sleeve 21, and the connecting piece four 22 and the fixed piece 23 fixedly connected with the right end of the steering wheel body 1 are connected through the connecting rod 24. Then, when the threaded sleeve 21 carries the connecting piece four 22 to move to the right side, the steering wheel body 1 is pulled to deflect around the fixed shaft one 10 by 90 degrees, so that the steering wheel body 1 is folded while being retracted.

[0043] As shown in Figure 4 , the universal joint mechanism includes the universal joint fork two 27 fixedly installed at the left end of the threaded rod one 13, the universal joint fork one 26 fixedly installed at the right end of the worm 25, the universal joint fork one 26 arranged in the Y-axis direction, the universal joint fork two 27 arranged in the X-axis direction, and the cross pin 28 movably connected between the universal joint fork one 26 and the universal joint fork two 27.

[0044] By adopting the above technical scheme, the universal joint mechanism is arranged, so that the threaded rod one 13 can still be connected to the retraction mechanism two arranged in the universal joint body while the steering wheel body 1 is folded. Specifically, when the steering wheel body 1 deflects around the fixed shaft one 10, the universal joint fork two 27 fixedly connected with the left end of the threaded rod one 13 is connected to the universal joint fork one 26 fixedly connected with the right end of the worm 25 through the cross pin 28, the worm 25 carries the universal joint fork one 26 to deflect, and the cross pin 28 rotates in the universal joint fork two 27, so that the threaded rod one 13 can still be connected to the worm 25.

[0045] As shown in Figure 8 , Figure 9 and Figure 10As shown, the second retracting mechanism comprises a second threaded rod 29 and a third threaded rod 30 rotatably connected inside the steering wheel body 1, the second threaded rod 29 is arranged on the upper side of the third threaded rod 30, the middle part of the outer surface of the third threaded rod 30 is fixedly provided with a first transmission gear 31, and the middle part of the outer surface of the second threaded rod 29 is fixedly provided with a second transmission gear 32, the worm 25 penetrates through the steering wheel body 1 and extends to the inside to be in meshing transmission with the first transmission gear 31 and the second transmission gear 32, the second retracting mechanism further comprises a threaded groove 33 arranged in the U-shaped upper end of the handle 2, a threaded groove 35 arranged in the U-shaped lower end of the handle 2, a threaded groove 34 arranged in the U-shaped upper end of the handle 3, and a threaded groove 36 arranged in the U-shaped lower end of the handle 3, the U-shaped upper end and the U-shaped lower end of the handle 2 both penetrate through and extend to the inside of the steering wheel body 1, and the threaded groove 33 is in screw transmission connection with the left end of the first threaded rod 13, the threaded groove 35 is in screw transmission connection with the left end of the second threaded rod 29, the U-shaped upper end and the U-shaped lower end of the handle 3 both penetrate through and extend to the inside of the steering wheel body 1, and the threaded groove 34 is in screw transmission connection with the right end of the first threaded rod 13, and the threaded groove 36 is in screw transmission connection with the right end of the second threaded rod 29.

[0046] By adopting the above technical scheme, the steering wheel is divided into three parts: the handle 2, the handle 3 and the steering wheel body 1, so that the handles 2 and 3 on both sides of the steering wheel body 1 can be retracted into the inside of the steering wheel body 1 in the intelligent driving mode, further reducing the presence of the steering wheel in the intelligent driving mode, increasing the space of the driver's cabin, and relatively improving the comfort of the driver, specifically: when the first threaded rod 13 drives the worm 25 to rotate through the universal joint mechanism, the worm 25 will drive the first transmission gear 31 and the second transmission gear 32 to mesh and transmit, since the first transmission gear 31 is fixedly connected with the second threaded rod 29 and the second transmission gear 32 is fixedly connected with the third threaded rod 30, the second threaded rod 29 and the third threaded rod 30 rotate synchronously under the drive of the worm 25, the left end of the second threaded rod 29 is in screw transmission connection with the threaded groove 33 arranged in the upper end of the handle 2, and the right end is in screw transmission connection with the threaded groove 34 arranged in the upper end of the handle 3, the left end of the third threaded rod 30 is in screw transmission connection with the threaded groove 35 arranged in the lower end of the handle 2, and the right end is in screw transmission connection with the threaded groove 36 arranged in the lower end of the handle 3, the second threaded rod 29 and the third threaded rod 30 cooperate with each other to make the handles 2 and 3 close to the steering wheel body 1 and retract into the inside of the steering wheel body 1 through screw transmission while rotating.

[0047] A kind of off-hand inductive steering wheel control method, comprising the following steps:

[0048] S1: the steering wheel body 1 is retracted: when entering the unmanned mode, the sensor senses that the driver's hand leaves the handle 2 and the handle 3, the sensor transmits an electrical signal to the hand-off sensing module, the hand-off sensing module synchronously starts the motor 7, the output shaft of the motor 7 carries the gear 11 to rotate, and then drives the rotating sleeve 5 to rotate, the rotating sleeve 5 retracts into the inside of the rotating sleeve 5, and the screw transmission sleeve 4 is synchronously rotated through the bevel gear 14 and the bevel gear 18 in the retraction process, and then drives the folding mechanism;

[0049] S2: the steering wheel body 1 is folded: when the threaded rod 13 rotates, the threaded sleeve 21 connected by the screw transmission on the outer surface of the threaded rod 13 will pull the steering wheel body 1 to deflect ninety degrees around the fixed shaft 10 through the connecting piece four 22 and the connecting rod 24, so that the steering wheel body 1 is folded to reduce the space occupation, and the universal joint mechanism arranged between the threaded rod 13 and the worm 25 can ensure that the steering wheel body 1 is folded while still being able to drive the second contraction mechanism;

[0050] S3: the handle 2 and the handle 3 are retracted: the threaded rod 13 rotates to drive the worm 25 through the universal joint mechanism, so that the worm 25 drives the threaded rod 29 and the threaded rod 30 to rotate, and the handle 2 and the handle 3 are retracted into the inside of the steering wheel body 1 through the screwing engagement of the threaded rod 29, the threaded rod 30, the threaded groove 33, the threaded groove 34, the threaded groove 35 and the threaded groove 36.

[0051] The above is only the preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical solution and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A hands-free sensing steering wheel, comprising a steering wheel body (1), a first handle (2) disposed at the rear of the steering wheel body (1), and a second handle (3) disposed at the front of the steering wheel body (1), wherein the first handle (2) and the second handle (3) are both U-shaped. Its features are: A threaded transmission sleeve (4) is provided on the right side of the steering wheel body (1). A rotating sleeve (5) is spirally driven on the outer surface of the threaded transmission sleeve (4). A fixed sleeve (6) is provided on the right side of the rotating sleeve (5). The rotating sleeve (5) and the fixed sleeve (6) are rotatably connected. A motor (7) is fixedly installed on the right end of the fixed sleeve (6). The threaded transmission sleeve (4) is provided with a threaded rod (13) inside. The threaded rod (13) extends into the interior of the rotating sleeve (5) and is provided with a retraction mechanism (1) between the rotating sleeve (5). A folding mechanism is provided between the threaded rod (13) and the steering wheel body (1). A worm gear (25) is rotatably connected to the right end face of the steering wheel body (1) corresponding to the threaded rod (13). A universal joint mechanism is provided between the worm gear (25) and the threaded rod (13). A retraction mechanism (2) is provided inside the steering wheel body (1). The worm gear (25) passes through the steering wheel body (1) and extends into the interior to be connected to the retraction mechanism (2). Both the handle (2) and the handle (3) pass through the steering wheel body (1) and extend into the interior to be connected to the retraction mechanism (2). Sensors are provided on the outer surfaces of the first handle (2) and the second handle (3). A hands-off sensing module is provided inside the steering wheel body (1). The sensors and the hands-off sensing module are electrically connected by wires. The hands-off sensing module is electrically connected to the motor (7) by wires. The shrinking mechanism includes a gear (11) disposed on the right side of the inside of the rotating sleeve (5). The output shaft of the motor (7) passes through the fixed sleeve (6) and extends into the inside of the rotating sleeve (5) and is fixedly connected to the gear (11). A toothed ring (12) is fixedly installed on the inner wall of the rotating sleeve (5) corresponding to the gear (11). The gear (11) and the toothed ring (12) mesh with each other. The shrinking mechanism also includes a threaded rod (13) with a conical wheel (14) fixedly installed on the right end. A connecting piece (3) (15) is fixedly installed on the lower rear end of the threaded transmission sleeve (4). A fixed shaft (2) (16) is fixedly installed on the upper end of the connecting piece (3) (15). A gear (2) (17) is rotatably connected to the outer surface of the fixed shaft (2) (16). A conical wheel (2) (18) is fixedly installed on the upper end of the gear (2) (17). The conical wheel (14) and the conical wheel (2) (18) mesh with each other. The left end of the fixed sleeve (6) is fixedly installed with a rack (19) corresponding to the gear two (17), and the rack (19) meshes with the gear two (17). The right end of the threaded transmission sleeve (4) is provided with a socket corresponding to the rack (19).

2. The hands-free sensing steering wheel according to claim 1, characterized in that: The folding mechanism includes a slot (20) at the upper end of the threaded transmission sleeve (4), a threaded sleeve (21) on the outer surface of the threaded rod (13), a connecting piece (22) fixedly connected to the upper end of the threaded sleeve (21), the connecting piece (22) being slidably connected inside the slot (20), a fixing piece (23) fixedly installed on the upper rear end of the steering wheel body (1), and a connecting rod (24) being movably connected between the fixing piece (23) and the connecting piece (22).

3. A hands-free sensing steering wheel according to claim 2, characterized in that: The folding mechanism also includes a connector 1 (8) fixedly installed on both sides of the left end of the threaded transmission sleeve (4). Connectors 2 (9) are provided on the outer side of both sets of connectors 1 (8). Both sets of connectors 2 (9) are fixedly connected to the steering wheel body (1). A fixing shaft 1 (10) is fixedly installed on the outer side of connector 1 (8). The fixing shaft 1 (10) is rotatably connected to connector 2 (9). Connectors 1 (8) are circular. The fixing member (23) is arc-shaped corresponding to connector 1 (8).

4. A hands-free sensing steering wheel according to claim 3, characterized in that: The universal joint mechanism includes a universal joint fork two (27) fixedly installed on the left end of the threaded rod one (13), a universal joint fork one (26) fixedly installed on the right end of the worm (25), the universal joint fork one (26) is arranged in the Y-axis direction, the universal joint fork two (27) is arranged in the X-axis direction, and a cross pin (28) is movably connected between the universal joint fork one (26) and the universal joint fork two (27).

5. A hands-free sensing steering wheel according to claim 4, characterized in that: The second retraction mechanism includes a threaded rod 2 (29) and a threaded rod 3 (30) internally rotatably connected to the steering wheel body (1). The threaded rod 2 (29) is located on the upper side of the threaded rod 3 (30). A transmission gear 1 (31) is fixedly installed in the middle of the outer surface of the threaded rod 3 (30). A transmission gear 2 (32) is fixedly installed in the middle of the outer surface of the threaded rod 2 (29). The worm gear (25) passes through the steering wheel body (1) and extends into the interior to mesh with the transmission gear 1 (31) and the transmission gear 2 (32) respectively.

6. A hands-free sensing steering wheel according to claim 5, characterized in that: The retraction mechanism 2 also includes a threaded groove 1 (33) on the upper U-shaped end of the handle 1 (2), a threaded groove 3 (35) on the lower U-shaped end of the handle 1 (2), a threaded groove 2 (34) on the upper U-shaped end of the handle 2 (3), and a threaded groove 4 (36) on the lower U-shaped end of the handle 2 (3). The upper and lower U-shaped ends of the handle 1 (2) both penetrate and extend into the interior of the steering wheel body (1), and the threaded groove 1 (33) is helically connected to the left end of the threaded rod 1 (13). The threaded groove 3 (35) is helically connected to the left end of the threaded rod 2 (29). The upper and lower U-shaped ends of the handle 2 (3) both penetrate and extend into the interior of the steering wheel body (1), and the threaded groove 2 (34) is helically connected to the right end of the threaded rod 1 (13). The threaded groove 4 (36) is helically connected to the right end of the threaded rod 2 (29).

7. A hands-free steering wheel control method applicable to any one of claims 1-6, characterized in that: Includes the following steps: S1: Steering wheel body (1) retracts: When entering the autonomous driving mode, the sensor senses that the driver's hand leaves handle one (2) and handle two (3). The sensor transmits an electrical signal to the off-hand sensing module, which then causes the motor (7) to start synchronously. The output shaft of the motor (7) carries gear one (11) to rotate, which in turn drives the rotating sleeve (5) to rotate. The rotating sleeve (5) will cause the threaded transmission sleeve (4) to retract into the interior of the rotating sleeve (5). During the retraction process, the threaded transmission sleeve (4) is rotated synchronously through cone wheel one (14) and cone wheel two (18), which in turn drives the folding mechanism. S2: Folding of the steering wheel body (1): When the threaded rod (13) rotates, the threaded sleeve (21) connected by the spiral drive on the outer surface of the threaded rod (13) will pull the steering wheel body (1) around the fixed shaft (10) by ninety degrees through the connecting part (22) and the connecting rod (24), thereby folding the steering wheel body (1) and reducing space occupation. Secondly, the universal joint mechanism set between the threaded rod (13) and the worm (25) can ensure that the steering wheel body (1) can still be connected to the retraction mechanism (2) while it is folding. S3: Handle 1 (2) and Handle 2 (3) retract: Threaded rod 1 (13) rotates and drives worm (25) through universal joint mechanism, so that worm (25) drives threaded rod 2 (29) and threaded rod 3 (30) to rotate. Through the helical meshing of threaded rod 2 (29) and threaded rod 3 (30) with threaded groove 1 (33), threaded groove 2 (34), threaded groove 3 (35) and threaded groove 4 (36) respectively, handle 1 (2) and handle 2 (3) retract into the interior of steering wheel body (1).

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