Drive-by-wire telescopic mechanical redundancy type steering column

Abstract

The utility model relates to the technical field of automatic driving steering systems, and discloses a drive-by-wire telescopic mechanical redundancy type steering column which comprises a transmission shaft, a coupler is fixedly connected to the middle of the top end of the transmission shaft, a hollow sleeve is arranged in the coupler, and an outer gear sleeve is fixedly connected to the bottom of the hollow sleeve. The outer gear sleeve is clamped with the coupler, the bottom of the inner wall of the hollow sleeve is fixedly connected with a telescopic rod, the top of the telescopic rod is fixedly connected with a telescopic column, the telescopic column is slidably connected with the hollow sleeve, and the top of the inner wall of the hollow sleeve is fixedly connected with a first inner gear sleeve. According to the utility model, the connection and separation of the rotating seat and the transmission shaft are realized through the movement of the telescopic column, so that the rotating seat is in a static state during automatic driving, the steering motor drives the steering wheel to rotate the steering wheel to a storage space during automatic driving, the space of a driving position is increased, and a driver can get on and off the vehicle conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic driving steering system technical field especially relates to a line control telescopic mechanical redundancy type steering column. BACKGROUND

[0002] With the scientific and technological leap, vehicles have realized unmanned driving, and the safety and intelligence of vehicles are required higher and higher in civil and military aspects, and the automatic control technology of the steering system of the vehicle is in the core position, therefore need to use a line control telescopic mechanical redundancy type steering column.

[0003] Through the retrieval, the patent of China announcement number for CN204937210U discloses a kind of unmanned steering transmission, including electric steering column, first transmission shaft, steering gear and angle sensor, electric steering column is fixedly connected with the frame of vehicle, first transmission shaft is fixedly connected with the output shaft of electric steering column, steering gear is installed on the frame, and is fixedly connected with first transmission shaft, angle sensor is arranged on the input shaft of electric steering column, can detect the change of input shaft angle, the steering transmission can make up the insufficient installation space below steering wheel, simultaneously, steering angle can be monitored in real time, reach high-precision steering and unmanned automatic control, but the device is rotated while realizing automatic steering, and steering wheel is fixed in front of user, not only affect the experience of user and make it inconvenient for user to get on and off. UTILITY MODEL CONTENT

[0004] In order to make up for the above insufficient, the utility model provides a line control telescopic mechanical redundancy type steering column, to improve the prior art in the device while realizing automatic steering steering wheel also follow rotation, and steering wheel is fixed in front of user, not only affect the experience of user and make it inconvenient for user to get on and off the problem.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of line control telescopic mechanical redundancy formula steering column, including transmission shaft, the top end middle part of the transmission shaft is fixedly connected with shaft coupling, the inside of the shaft coupling is provided with hollow sleeve, the bottom of the hollow sleeve is fixedly connected with outer tooth cover, the outer tooth cover is engaged with the shaft coupling, the inner wall bottom of the hollow sleeve is fixedly connected with telescopic rod, the top of the telescopic rod is fixedly connected with telescopic column, the telescopic column is slidably connected with the hollow sleeve, the inner wall top of the hollow sleeve is fixedly connected with inner tooth cover one, the bottom of the telescopic column is fixedly connected with tooth ring, the tooth ring is engaged with the inner tooth cover one, the inner wall top of the inner tooth cover one is fixedly connected with limit block around, the top of the telescopic column is rotatably connected with bearing, the inner wall top of the bearing is rotatably connected with steering seat, the inner wall bottom of the steering seat is fixedly connected with inner tooth cover two, the top of the telescopic column is fixedly connected with gear, the inner tooth cover two is engaged with the gear, the top of the bearing is rotatably connected with angle sensor, the angle sensor is engaged with the steering seat, the top of the steering seat is provided with contraction assembly, the outer wall of the telescopic column is provided with protection mechanism.

[0006] Through the above technical scheme: in initial state, telescopic rod is in the contraction state, at this time telescopic column is contracted in the inside of hollow sleeve, at this time steering seat is disconnected with telescopic column, when vehicle turns, transmission shaft drives hollow sleeve and telescopic column in its inside to rotate, and rotating seat is in stationary state, steering wheel is in hidden state, to provide spacious space for cab, so as to facilitate driver to get on and off the vehicle, when manual driving is needed, steering motor drives steering wheel to rotate to vertical state after angle sensor automatically matches the corresponding angle of steering wheel and wheel, telescopic rod drives telescopic column to move, so that telescopic column is engaged with rotating seat and hollow sleeve, steering motor drives steering wheel to rotate to the appropriate position of driver again, and automatic driving system is closed, and steering can be realized by steering wheel.

[0007] As further description of the above technical scheme:

[0008] The protection mechanism includes fixed ring one, the fixed ring one is fixedly connected on the outer wall of the telescopic column upside, the bottom of the fixed ring one is threadedly connected with a plurality of hollow tubes around, the outer wall bottom of the hollow sleeve is fixedly connected with fixed ring two, the top of the fixed ring two is threadedly connected with a plurality of protection rods around, a plurality of the protection rods are slidably connected with corresponding protection rods respectively, a plurality of the hollow tubes and a plurality of the protection rods are fixedly connected with support ring on the outer wall.

[0009] Through the technical scheme, the first fixed ring and the second fixed ring are fixed to the outer wall of the telescopic column and the hollow sleeve, the hollow pipe moves along with the telescopic column, and the hollow pipe and the protection rod can protect the telescopic column and the hollow sleeve, prevent the hollow sleeve and the telescopic column from being damaged by external force, and affect the use of the steering system.

[0010] Further description of the above technical scheme:

[0011] The telescopic assembly comprises a steering wheel, the steering wheel is rotationally connected to the top of the steering seat, the outer wall of the steering seat is fixedly connected with a steering motor at the rear side, and the output end of the steering motor penetrates the steering seat and is fixedly connected with the steering wheel.

[0012] Through the technical scheme, the steering motor can drive the reverse steering wheel to rotate and be accommodated in the space, thereby reducing the occupied space of the cab and bringing good driving experience to passengers.

[0013] Further description of the above technical scheme:

[0014] The outer wall of the steering wheel is provided with a reserved slot at the left side, and the inner wall of the reserved slot is fixedly connected with an airbag.

[0015] Through the technical scheme, the reserved slot is used for the airbag, and the airbag can protect the safety of the driver when the vehicle collides with external objects.

[0016] Further description of the above technical scheme:

[0017] A plurality of anti-skid grooves are formed around the outer wall of the reserved slot, and the plurality of anti-skid grooves are equidistantly arranged around the outer wall of the steering wheel.

[0018] Through the technical scheme, the anti-skid grooves are used to increase the friction between the hands and the steering wheel, and prevent the hands from slipping to cause safety accidents when the steering wheel is rotated.

[0019] Further description of the above technical scheme:

[0020] The outer wall of the hollow sleeve is provided with an information board, the outer wall of the information board is threadedly connected with a plurality of screws, and the information board is threadedly connected with the hollow sleeve through the screws.

[0021] Through the technical scheme, the information board is used to record the information parameters of the device, and prevent installation errors from causing driving safety hazards.

[0022] Further description of the above technical scheme:

[0023] The outer wall of the telescopic column is provided with a plurality of sliding grooves, and the plurality of sliding grooves are respectively in sliding connection with the corresponding limiting blocks.

[0024] Through the above technical scheme, the sliding groove and the sliding block are in sliding connection, which can ensure synchronous rotation of the telescopic column and the hollow sleeve while not affecting movement of the telescopic column, and avoids failure of the inner tooth sleeve and the tooth ring in clamping due to inconsistent rotation angles.

[0025] As a further description of the above technical scheme:

[0026] The outer wall left side of the transmission shaft is fixedly connected with a controller, and the controller is electrically connected with the telescopic rod, the angle sensor and the steering motor

[0027] Through the above technical scheme, the controller can control the telescopic rod, the angle sensor and the steering motor at the same time, realizes intelligentization, and facilitates quick conversion of driving modes.

[0028] The utility model has the advantages of:

[0029] 1、The utility model discloses a telescopic rod drives the telescopic column to move to realize the connection and separation of rotating seat and transmission shaft, so that the rotating seat is in the stationary state when automatic driving, and the steering motor drives the steering wheel to rotate to the storage space in the automatic driving, increases the space of the driving position, and facilitates the driver to get on and off the vehicle to solve the problem that the steering wheel rotates and occupies space when the vehicle turns in the automatic driving.

[0030] 2、The utility model discloses a telescopic rod drives the telescopic column to move to realize the connection and separation of rotating seat and transmission shaft, so that the rotating seat is in the stationary state when automatic driving, and the steering motor drives the steering wheel to rotate to the storage space in the automatic driving, increases the space of the driving position, and facilitates the driver to get on and off the vehicle to solve the problem that the steering wheel rotates and occupies space when the vehicle turns in the automatic driving. ACCOUT OF DRAWINGS

[0031] Figure 1 A line control telescopic mechanical redundant steering column is provided for the utility model, and a three-dimensional view is shown in the figure.

[0032] Figure 2 A line control telescopic mechanical redundant steering column is provided for the utility model, and a partial structure split view is shown in the figure.

[0033] Figure 3 A line control telescopic mechanical redundant steering column is provided for the utility model, and a partial structure schematic view is shown in the figure.

[0034] Figure 4 A line control telescopic mechanical redundant steering column is provided for the utility model, and a partial structure schematic view is shown in the figure.

[0035] Figure 5 A kind of wire control telescopic mechanical redundancy steering column's protection mechanism schematic view is proposed for the utility model.

[0036] Legend:

[0037] 1, transmission shaft;2, protection mechanism;201, fixed ring one;202, hollow tube;203, fixed ring two;204, protection rod;205, support ring;3, shaft coupling;4, hollow sleeve;5, outer tooth sleeve;6, telescopic rod;7, inner tooth sleeve one;8, limit block;9, telescopic column;10, gear ring;11, bearing;12, steering seat;13, inner tooth sleeve two;14, gear;15, rotation angle sensor;16, steering wheel;17, steering motor;18, reserved slot;19, airbag;20, antiskid groove;21, sliding groove;22, controller;23, information board;24, screw two. Specific embodiments

[0038] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3The utility model provides a kind of embodiment: a kind of line control telescopic mechanical redundancy formula steering column, including transmission shaft 1, transmission shaft 1 is used to control the steering of tire, the top end middle part of the transmission shaft 1 is fixedly connected with shaft coupling 3, the inside of the shaft coupling 3 is provided with hollow sleeve 4, the bottom of the hollow sleeve 4 is fixedly connected with outer tooth sleeve 5, the outer tooth sleeve 5 is engaged with the shaft coupling 3, hollow sleeve 4 is engaged with shaft coupling 3 by outer tooth sleeve 5, so that connection is more fixed, and it is convenient when disassembling, the inner wall bottom of the hollow sleeve 4 is fixedly connected with telescopic link 6, the top of the telescopic link 6 is fixedly connected with telescopic column 9, telescopic column 9 mainly plays the role of connection, by telescopic link 6 can drive telescopic column 9 to connect other components, the telescopic column 9 is slidably connected with the hollow sleeve 4, telescopic column 9 is slidably connected in the inner wall of outer tooth sleeve 5, increase its moving distance, the inner wall top of the hollow sleeve 4 is fixedly connected with inner tooth sleeve one 7, the bottom of the telescopic column 9 is fixedly connected with gear ring 10, the gear ring 10 is engaged with the inner tooth sleeve one 7, gear ring 10 is engaged with inner tooth sleeve one 7, when hollow sleeve 4 can drive telescopic column 9 to rotate, the inner wall top of the inner tooth sleeve one 7 is fixedly connected with limit block 8 all around, limit block 8 is used to prevent telescopic column 9 from excessively moving up and disengaging from hollow sleeve 4, the top of the telescopic column 9 is rotatably connected with bearing 11, bearing 11 mainly plays the role of connection, the inner wall top of the bearing 11 is rotatably connected with steering seat 12, the inner wall bottom of the steering seat 12 is fixedly connected with inner tooth sleeve two 13, the top end of the telescopic column 9 is fixedly connected with gear 14, the inner tooth sleeve two 13 is engaged with the gear 14, when telescopic column 9 moves up, gear 14 is engaged with inner tooth sleeve two 13, can make steering seat 12 and telescopic column 9 synchronous rotation, the top of the bearing 11 is rotatably connected with corner sensor 15, the corner sensor 15 is engaged with the steering seat 12, corner sensor 15 can rotate according to the steering angle of wheel, the top of the steering seat 12 is provided with contraction assembly, the outer wall of the telescopic column 9 is provided with protection mechanism 2;The contraction assembly includes steering wheel 16, and contraction steering wheel 16 is rotatably connected at the top of the steering seat 12, and steering wheel 16 can be rotated to hidden position when unmanned, increase the space of driving, facilitate driver to get on and off, the rear side of the outer wall of the steering seat 12 is fixedly connected with steering motor 17, the steering motor 17 is used to adjust the rotation angle of steering wheel 16, the output end of the steering motor 17 penetrates the steering seat 12 and is fixedly connected with the steering wheel 16;The outer wall of the telescopic column 9 is provided with a plurality of sliding grooves 21 all around, a plurality of the sliding grooves 21 are slidably connected with corresponding limit block 8 respectively, limit block 8 and sliding groove 21 slidably connected can drive telescopic column 9 and hollow sleeve 4 synchronous rotation while playing the limiting effect to telescopic column 9;

[0040] Specifically, when automatic driving, the telescopic rod 6 is in the retracted state, at this time the telescopic column 9 is retracted inside the hollow sleeve 4, the gear 14 is disengaged from the steering seat 12, and the transmission shaft 1 rotates only to drive the hollow sleeve 4 and the telescopic column 9 to rotate, while the steering seat 12 does not rotate, so that the steering wheel 16 is in a silent state in a hidden space. When manual takeover of the vehicle is required, the steering motor 17 first drives the steering wheel 16 to rotate to the vertical state, and the angle sensor 15 adjusts the steering wheel 16 to rotate to the same angle according to the angle of rotation of the transmission shaft 1. Then the telescopic rod 6 extends to drive the telescopic column 9 to move upward, driving the gear 14 and the gear ring 10 to move upward, so that the gear 14 is engaged with the steering seat 12, and the gear ring 10 is engaged with the gear 14. After the steering motor 17 drives the steering wheel 16 to rotate to the appropriate position, the automatic steering system stops working, so that the steering wheel 16 drives the steering seat 12, the angle sensor 15, the telescopic column 9, the hollow sleeve 4 and the transmission shaft 1 to rotate synchronously when rotating, thereby realizing manual driving.

[0041] With reference to Figure 1 and Figure 5 , the protection mechanism 2 comprises a fixed ring one 201, which mainly plays a connecting role and is fixedly connected to the outer wall of the telescopic column 9. The fixed ring one 201 is fixed to the outer wall of the telescopic column 9, which does not affect the telescopic movement of the telescopic column 9. The bottom of the fixed ring one 201 is threadedly connected with a plurality of hollow tubes 202 around the periphery. The hollow tubes 202 mainly serve as sliding carriers. The outer wall of the bottom of the hollow sleeve 4 is fixedly connected with a fixed ring two 203. The top of the fixed ring two 203 is threadedly connected with a plurality of protection rods 204 around the periphery. The plurality of hollow tubes 202 are respectively in sliding connection with the corresponding protection rods 204. The hollow tubes 202 are in sliding connection with the protection rods 204, forming a protection ring outside the telescopic column 9 and the hollow sleeve 4, preventing the telescopic column 9 and the hollow sleeve 4 from being damaged due to external pressure. The outer walls of the plurality of hollow tubes 202 and the plurality of protection rods 204 are fixedly connected with a support ring 205.

[0042] Specifically, the hollow tubes 202 and the protection rods 204 are connected by threads, which facilitates replacement of damaged hollow tubes 202 and protection rods 204. When the telescopic column 9 extends or retracts, the protection rods 204 are in close contact with the hollow tubes 202, forming a protection ring outside the telescopic column 9 and the hollow sleeve 4, preventing the hollow sleeve 4 and the telescopic column 9 from being damaged due to external pressure. At the same time, when the vehicle is hit, the protection rods 204 and the hollow tubes 202 can absorb part of the impact force, thereby protecting the safety of the driver in the cab.

[0043] With reference to Figure 1 , Figure 2 and Figure 4The outer wall of the steering wheel 16 is provided with a reserved groove 18, and the inner wall of the reserved groove 18 is fixedly connected with a safety air bag 19, which can be popped out in time when the vehicle is hit by external force; a plurality of anti-skid grooves 20 are arranged around the outer wall of the steering wheel 16, and the anti-skid grooves 20 can increase the friction between the hands and the steering wheel 16, preventing the hands from slipping when the steering wheel 16 is rotated.

[0044] Specifically, when the vehicle collides with external objects, the safety air bag 19 can be popped out in the first time, thereby ensuring the safety of the driver in the cab; the anti-skid grooves 20 can prevent the hands from slipping when the steering wheel 16 is rotated during manual driving.

[0045] Referring to Figure 1 , Figure 2 and Figure 3 , the outer wall of the hollow sleeve 4 is provided with an information board 23, the outer wall of the information board 23 is threadedly connected with a second screw 24, and the information board 23 is threadedly connected with the hollow sleeve 4 through the second screw 24; the information board 23 can record the information parameters of the hollow sleeve 4, preventing installation errors from affecting driving; the outer wall of the transmission shaft 1 is fixedly connected with a controller 22, the controller 22 is electrically connected with the telescopic rod 6, the angle sensor 15 and the steering motor 17, and the controller 22 can control multiple devices to operate simultaneously, forming automation and facilitating quick switching of driving modes.

[0046] Specifically, the information board 23 is used to record the information parameters and installation methods of the hollow sleeve 4, preventing installation errors from affecting driving; the controller 22 can control multiple devices to work cooperatively, facilitating quick switching of driving modes and forming automatic conversion of driving modes.

[0047] Working principle: in normal state, the telescopic rod 6 is in the contracted state, the steering wheel 16 is in the hidden space, and the spacious space is provided for the cab, at this time, the telescopic column 9 is retracted into the inside of the hollow sleeve 4, the gear 14 is disengaged from the clamping of the steering seat 12, and the transmission shaft 1 rotates only to drive the hollow sleeve 4 and the telescopic column 9 to rotate, while the steering seat 12 does not rotate, so that the steering wheel 16 is in the silent state in the hidden space, when manual takeover of the vehicle is needed, the steering motor 17 first drives the steering wheel 16 to rotate to the vertical state, the angle sensor 15 adjusts the steering wheel 16 to rotate to the same angle according to the rotation angle of the transmission shaft 1, then the telescopic rod 6 extends to drive the telescopic column 9 to move upward, drive the gear 14 and the gear ring 10 to move upward, so that the gear 14 is clamped with the steering seat 12, the gear ring 10 is clamped with the gear 14, after the steering motor 17 drives the steering wheel 16 to rotate to the appropriate position, the automatic steering system stops working, so that the steering wheel 16 drives the steering seat 12, the angle sensor 15, the telescopic column 9, the hollow sleeve 4 and the transmission shaft 1 to rotate synchronously when rotating, so as to realize manual driving, and the hollow pipe 202 and the protection rod 204 are connected through threads, so as to facilitate replacement of the damaged hollow pipe 202 and the protection rod 204, when the telescopic column 9 extends or retracts, the protection rod 204 is close to the hollow pipe 202, a protection ring is formed outside the telescopic column 9 and the hollow sleeve 4, so as to prevent the hollow sleeve 4 and the telescopic column 9 from being extruded and damaged by external force, at the same time, when the vehicle is impacted, the protection rod 204 and the hollow pipe 202 can absorb part of the impact force, so as to protect the safety of the driver in the cab and improve the safety.

[0048] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A by-wire telescopic mechanically redundant steering column comprising a transmission shaft (1), characterized in that: The top end of the transmission shaft (1) is fixedly connected with a shaft coupling (3), the inside of the shaft coupling (3) is provided with a hollow sleeve (4), the bottom of the hollow sleeve (4) is fixedly connected with an external tooth sleeve (5), the external tooth sleeve (5) is clamped with the shaft coupling (3), the inner wall bottom of the hollow sleeve (4) is fixedly connected with a telescopic rod (6), the top of the telescopic rod (6) is fixedly connected with a telescopic column (9), the telescopic column (9) is slidably connected with the hollow sleeve (4), the inner wall top of the hollow sleeve (4) is fixedly connected with an internal tooth sleeve I (7), the bottom of the telescopic column (9) is fixedly connected with a tooth ring (10), the tooth ring (10) is clamped with the internal tooth sleeve I (7), the inner wall top of the internal tooth sleeve I (7) is fixedly connected with a limiting block (8) around, the top of the telescopic column (9) is rotatably connected with a bearing (11), the inner wall top of the bearing (11) is rotatably connected with a steering seat (12), the inner wall bottom of the steering seat (12) is fixedly connected with an internal tooth sleeve II (13), the top of the telescopic column (9) is fixedly connected with a gear (14), the internal tooth sleeve II (13) is clamped with the gear (14), the top of the bearing (11) is rotatably connected with a rotation angle sensor (15), the rotation angle sensor (15) is clamped with the steering seat (12), the top of the steering seat (12) is provided with a contraction assembly, the outer wall of the telescopic column (9) is provided with a protection mechanism (2).

2. A by-wire telescopic mechanically-redundant steering column according to claim 1, characterized in that: The protection mechanism (2) comprises a fixed ring I (201), the fixed ring I (201) is fixedly connected on the outer wall of the telescopic column (9), the bottom of the fixed ring I (201) is threadedly connected with a plurality of hollow tubes (202) around, the outer wall bottom of the hollow sleeve (4) is fixedly connected with a fixed ring II (203), the top of the fixed ring II (203) is threadedly connected with a plurality of protection rods (204) around, a plurality of protection rods (204) are slidably connected with corresponding protection rods (204) respectively, a plurality of hollow tubes (202) and a plurality of protection rods (204) are fixedly connected with a support ring (205) on the outer wall.

3. A by-wire telescopic mechanically-redundant steering column according to claim 1, characterized in that: The contraction assembly comprises a steering wheel (16), the steering wheel (16) is rotatably connected on the top of the steering seat (12), the outer wall rear side of the steering seat (12) is fixedly connected with a steering motor (17), the output end of the steering motor (17) penetrates the steering seat (12) and is fixedly connected with the steering wheel (16).

4. A by-wire telescopic mechanically-redundant steering column according to claim 3, characterized in that: The outer wall left side of the steering wheel (16) is provided with a reserved slot (18), the inner wall of the reserved slot (18) is fixedly connected with an airbag (19).

5. A by-wire telescopic mechanically-redundant steering column according to claim 4, characterized in that: A plurality of anti-skid grooves (20) are arranged around the outer wall of the steering wheel (16).

6. A by-wire telescoping mechanically-redundant steering column as defined in claim 1, characterized in that: The outer wall front side of the hollow sleeve (4) is provided with an information board (23), the outer wall of the information board (23) is evenly screwed with a screw (24), and the information board (23) is screwed with the hollow sleeve (4) through the screw (24).

7. A by-wire telescoping mechanically-redundant steering column as defined in claim 1, characterized in that: A plurality of sliding grooves (21) are formed in the outer wall of the telescopic column (9), and the plurality of sliding grooves (21) are respectively and slidably connected with the corresponding limiting blocks (8).

8. A by-wire telescoping mechanically-redundant steering column as defined in claim 1, characterized by: The outer wall left side of the transmission shaft (1) is fixedly connected with a controller (22), and the controller (22) is respectively and electrically connected with the telescopic rod (6), the angle sensor (15) and the steering motor (17).

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