Wheel steering driving device and vehicle with same

Abstract

The utility model discloses a steering driving device of a wheel and a vehicle with the steering driving device. The steering driving device of the wheel comprises a moving part and a driving part, one end of the joint fork is fixed to the moving part so as to be driven by the moving part to move, the other end of the joint fork is suitable for being matched with the transmission part so as to drive a wheel to steer through the transmission part when the joint fork moves, one of the moving part and the joint fork is provided with a first rotation stopping part, and the other one of the moving part and the joint fork is provided with a first rotation stopping matching part matched with the first rotation stopping part; therefore, rotation of the yoke relative to the moving part is limited. According to the steering driving device of the wheel, rotation of the joint fork is limited, the position of the joint fork relative to the transmission piece is guaranteed, the other end of the joint fork can be smoothly matched with the transmission piece, the position of the joint fork does not need to be repeatedly adjusted, the installation difficulty of the joint fork is conveniently reduced, and installation steps are simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a steering drive device for a wheel and a vehicle with the same. Background Art

[0002] The steering device of a vehicle is used to drive the steering of the wheels, thereby realizing the turning of the vehicle. The steering device includes a yoke, and a fixed arm on the yoke is fixed to a transmission rod. When the yoke moves, the wheel is driven to steer via the transmission rod. In the related art, the position of the yoke in the steering device is fixed by screws. When the screws are tightened, the yoke is easily rotated due to the force, which causes the position of the fixed arm to change, affecting the fixation of the fixed arm to the transmission rod. When this happens, the position of the yoke needs to be reinstalled, making the assembly process of the steering device very cumbersome and complicated. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a wheel steering drive device, which ensures the position of the yoke relative to the transmission member by limiting the rotation of the yoke, so that the other end of the yoke can smoothly cooperate with the transmission member, so that there is no need to repeatedly adjust the position of the yoke, which is convenient for reducing the difficulty of installing the yoke and simplifying the installation steps.

[0004] The utility model also provides a vehicle with the steering drive device of the wheel.

[0005] The steering drive device for a wheel according to the first aspect of the utility model embodiment comprises: a reciprocating movable member; a yoke, one end of the yoke is fixed to the movable member so as to be driven to move by the movable member, and the other end is suitable for cooperating with a transmission member so as to drive the wheel to steer through the transmission member when the yoke moves, wherein one of the movable member and the yoke is provided with a first anti-rotation portion, and the other is provided with a first anti-rotation mating portion mating with the first anti-rotation portion so as to limit the rotation of the yoke relative to the movable member.

[0006] The steering drive device of the wheel according to the embodiment of the utility model ensures the position of the yoke relative to the transmission member by limiting the rotation of the yoke, so that the other end of the yoke can smoothly cooperate with the transmission member. This eliminates the need to repeatedly adjust the position of the yoke, thereby reducing the difficulty of installing the yoke and simplifying the installation steps.

[0007] In addition, the wheel steering drive device according to the above embodiment of the utility model may also have the following additional technical features:

[0008] According to some embodiments of the utility model, one of the moving part and the yoke has a matching hole, and the other has a matching protrusion, and the matching protrusion is plugged into and matched with the matching hole, wherein the first anti-rotation portion is arranged on the inner wall of the matching hole, and the first anti-rotation matching portion is arranged on the outer periphery of the matching protrusion.

[0009] According to some optional embodiments of the present invention, the first anti-rotation portion includes a first plane located on the inner wall of the mating hole, and the first anti-rotation fitting portion includes a second plane located on the outer periphery of the mating protrusion; and\or, the first anti-rotation portion includes a first groove located on the inner wall of the mating hole, and the first anti-rotation fitting portion includes a first protrusion located on the outer periphery of the mating protrusion; and\or, the first anti-rotation portion includes a second protrusion located on the inner wall of the mating hole, and the first anti-rotation fitting portion includes a second groove located on the outer periphery of the mating protrusion.

[0010] According to some optional embodiments of the utility model, the movable member is provided with a first fixing hole, the yoke is provided with a second fixing hole, and the first fixing member cooperates with the first fixing hole and the second fixing hole respectively to fix the yoke and the movable member together.

[0011] According to some specific embodiments of the present invention, the first fixing member passes through the first fixing hole and is threadedly engaged with the second fixing hole.

[0012] According to some specific embodiments of the utility model, the movable part has the matching hole, the yoke has the matching protrusion, the first fixing hole is connected to the matching hole and is located on the side of the matching hole away from the yoke, and the second fixing hole passes through the matching protrusion.

[0013] According to some embodiments of the utility model, the steering drive device of the wheel also includes a shell, a housing cavity for accommodating the moving part is provided in the shell; a sliding bearing is provided in the housing cavity, and the moving part includes a first shaft segment, and the first shaft segment is slidably matched with the sliding bearing.

[0014] According to some optional embodiments of the present invention, a second anti-rotation portion is provided on the moving member, and a second anti-rotation matching portion matching with the second anti-rotation portion is provided in the accommodating cavity to limit the rotation of the moving member.

[0015] According to some specific embodiments of the present invention, the second anti-rotation portion is provided on a second shaft segment of the moving member, and a radial dimension of the second shaft segment is smaller than a radial dimension of the first shaft segment.

[0016] In some embodiments, the second anti-rotation portion includes a third plane located on the outer periphery of the second shaft segment, and the second anti-rotation mating portion includes a fourth plane located on the inner wall of the accommodating cavity; and\or, the second anti-rotation portion includes a third groove located on the outer periphery of the second shaft segment, and the second anti-rotation mating portion includes a third protrusion located on the inner wall of the accommodating cavity; and\or, the second anti-rotation portion includes a fourth protrusion located on the outer periphery of the second shaft segment, and the second anti-rotation mating portion includes a fourth groove located on the inner wall of the accommodating cavity.

[0017] According to some embodiments of the utility model, the steering drive device of the wheel also includes a shell and a third anti-rotation part, the shell is provided with a accommodating cavity for accommodating the moving part; the inner wall of the accommodating cavity is provided with a guide groove, the third anti-rotation part is arranged on the moving part and slidably cooperates with the guide groove to limit the rotation of the moving part.

[0018] According to some optional embodiments of the present utility model, the movable member is provided with a mounting hole, and the third anti-rotation portion is fixedly matched with the mounting hole.

[0019] According to some optional embodiments of the present invention, the steering drive device of the wheel further includes a detection device for detecting the moving position of the moving member.

[0020] According to some specific embodiments of the present utility model, the detection device includes a first sensing member and a second sensing member, the first sensing member is disposed on the shell, and the second sensing member is disposed on an end of the third anti-rotation portion.

[0021] According to the second aspect of the present invention, a vehicle is provided, comprising: a wheel; and a steering drive device for the wheel according to the first aspect of the present invention, wherein the yoke is connected to the wheel through the transmission member to drive the wheel to steer.

[0022] According to the vehicle of the embodiment of the utility model, by utilizing the steering drive device of the wheel according to the embodiment of the first aspect of the utility model, the rotation of the yoke is limited to ensure the position of the yoke relative to the transmission member, so that the other end of the yoke can be smoothly matched with the transmission member. In this way, there is no need to repeatedly adjust the position of the yoke, which makes it easy to reduce the difficulty of installing the yoke and simplify the installation steps.

[0023] According to some embodiments of the present invention, the wheel is a rear wheel of the vehicle.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a schematic diagram of the structure of the steering drive device according to an embodiment of the utility model in one direction;

[0027] Figure 2 is a schematic structural diagram of the steering drive device according to an embodiment of the utility model in another direction;

[0028] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0029] Figure 4 It is a structural schematic diagram of a moving part and a yoke according to an embodiment of the utility model;

[0030] Figure 5 It is a structural exploded view of the moving member, the yoke and the first fixing member according to an embodiment of the utility model;

[0031] Figure 6 It is a schematic diagram of the structure of a moving part in one direction according to an embodiment of the utility model;

[0032] Figure 7 is a schematic structural diagram of a moving part according to an embodiment of the utility model in another direction;

[0033] Figure 8 is a partial cross-sectional view of a moving part according to an embodiment of the utility model;

[0034] Fig. 9 This is a schematic diagram of the structure of the yoke in one direction according to an embodiment of the utility model;

[0035] Fig.10 It is a schematic structural diagram of the yoke in another direction according to an embodiment of the utility model.

[0036] Reference numerals: Steering drive device 1,

[0037] Moving part 10, first shaft section 101, second shaft section 102, matching hole 11, first plane 12, first fixing hole 13, third plane 14, mounting hole 16,

[0038] yoke 20, matching protrusion 21, second plane 22, second fixing hole 23, first connecting arm 24, third fixing hole 241, first sinking groove 245, second connecting arm 25, fourth fixing hole 252, second sinking groove 255,

[0039] Shell 30, accommodating cavity 31, guide groove 36,

[0040] The first fixing member 61 , the sliding bearing 65 , the third anti-rotation portion 66 , and the second sensing member 68 . DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] The following describes a wheel steering drive device 1 according to an embodiment of the present utility model with reference to the accompanying drawings.

[0043] like Figure 1-Figure 5 As shown, the steering drive device 1 of the wheel according to the embodiment of the utility model includes a moving part 10 and a yoke 20.

[0044] The moving member 10 can move back and forth, one end of the yoke 20 is fixed to the moving member 10 so as to be driven to move by the moving member 10, and the other end of the yoke 20 is suitable for cooperating with the transmission member. When the moving member 10 moves back and forth, the moving member 10 drives the yoke 20 to move back and forth. When the yoke 20 moves, it drives the wheel to turn through the transmission member to adjust the direction of the wheel and facilitate the vehicle to turn.

[0045] Among them, one of the moving part 10 and the yoke 20 is provided with a first anti-rotation portion, and the other is provided with a first anti-rotation matching portion. The first anti-rotation matching portion cooperates with the first anti-rotation portion to limit the rotation of the yoke 20 relative to the moving part 10. In this way, when one end of the yoke 20 is fixed on the moving part 10, on the one hand, the first anti-rotation portion and the first anti-rotation matching portion can be used to determine the position of the yoke 20 relative to the moving part 10. On the other hand, when operating to fix the yoke 20 on the moving part 10, it can be prevented that the yoke 20 will rotate relative to the moving part 10 due to the force applied during the operation, thereby preventing the position of the yoke 20 from changing.

[0046] Specifically, when the yoke 20 is in a specified position, the yoke 20 cooperates with the transmission member. When the yoke 20 rotates and the position of the other end of the yoke 20 changes, it will affect the cooperation between the other end of the yoke 20 and the transmission member, causing the cooperation angle between the yoke 20 and the transmission member to not meet the requirements, thereby causing greater wear and abnormal noise between the yoke 20 and the transmission member when moving back and forth. At this time, the yoke 20 needs to be reinstalled to readjust the position of the other end of the yoke 20.

[0047] The present application limits the rotation of the yoke 20 relative to the moving member 10 by making the yoke 20 cooperate with the moving member 10 through the first anti-rotation portion and the first anti-rotation matching portion. In this way, when operating to fix the yoke 20 on the moving member 10, since the rotation of the yoke 20 is limited, even if the yoke 20 is subjected to torque, it will not rotate relative to the moving member 10, thereby ensuring the position of the yoke 20, so that the other end of the yoke 20 is in a specified position, and the other end of the yoke 20 can cooperate smoothly with the transmission member. When the moving member 10 drives the yoke 20 to move, the yoke 20 can drive the wheel to turn through the transmission member.

[0048] By limiting the rotation of the yoke 20, when the yoke 20 is fixed on the moving part 10, the yoke 20 can be prevented from rotating due to force, thereby ensuring the position of the yoke 20 relative to the transmission part, and then the other end of the yoke 20 can be smoothly matched with the transmission part. In this way, there is no need to repeatedly adjust the position of the yoke 20, which makes it easier to reduce the installation difficulty of the yoke 20 and simplifies the installation steps.

[0049] According to the steering drive device 1 of the wheel in the embodiment of the utility model, the rotation of the yoke 20 is limited to ensure the position of the yoke 20 relative to the transmission member, so that the other end of the yoke 20 can be smoothly matched with the transmission member. In this way, there is no need to repeatedly adjust the position of the yoke 20, which makes it easier to install the yoke 20 and simplifies the installation steps.

[0050] The following describes a wheel steering drive device 1 according to a specific embodiment of the present utility model with reference to the accompanying drawings.

[0051] In some specific embodiments of the present invention, Figure 1-Figure 5 As shown, the steering drive device 1 of the wheel includes a moving part 10 and a yoke 20 .

[0052] In some embodiments of the present invention, Figure 6 , Fig. 9 As shown, one of the moving part 10 and the yoke 20 has a matching hole 11, and the other has a matching protrusion 21, and the matching protrusion 21 is plugged and matched with the matching hole 11, wherein the first stop portion is arranged on the inner wall of the matching hole 11, and the first stop matching portion is arranged on the outer periphery of the matching protrusion 21. When the matching protrusion 21 and the matching hole 11 are plugged into place, the first stop portion matches with the first stop matching portion. At this time, the position of the yoke 20 can be determined and the axial rotation of the yoke 20 around the matching hole 11 is restricted, thereby ensuring the position of the yoke 20 relative to the transmission member, and then the other end of the yoke 20 can be smoothly matched with the transmission member. In this way, there is no need to repeatedly adjust the position of the yoke 20, which is convenient to reduce the installation difficulty of the yoke 20 and simplify the installation steps.

[0053] In some optional embodiments of the present invention, Figure 6 , Fig. 9 As shown, the first anti-rotation portion includes a first plane 12 located on the inner wall of the mating hole 11, and the first anti-rotation mating portion includes a second plane 22 located on the outer periphery of the mating protrusion 21. When the mating protrusion 21 is plugged into the mating hole 11, the first plane 12 fits with the second plane 22 to limit the rotation of the yoke 20 relative to the moving part 10.

[0054] In some embodiments, Figure 6 , Fig. 9 As shown, the end of the movable member 10 facing the yoke 20 has a mating hole 11, the inner wall of the mating hole 11 is provided with a first plane 12, the end of the yoke 20 facing the movable member 10 has a mating protrusion 21, the outer periphery of the mating protrusion 21 is provided with a second plane 22, when the mating protrusion 21 is plugged into the mating hole 11, the first plane 12 fits with the second plane 22, and by making the first plane 12 fit with the second plane 22, the rotation of the mating protrusion 21 in the mating hole 11 is limited, thereby limiting the rotation of the yoke 20 relative to the movable member 10.

[0055] In some optional embodiments of the present invention, the first anti-rotation portion includes a first groove located on the inner wall of the mating hole 11, and the first anti-rotation mating portion includes a first protrusion located on the outer periphery of the mating protrusion 21. When the mating protrusion 21 is plugged into the mating hole 11, the first protrusion extends into the first groove to limit the rotation of the yoke 20 relative to the moving part 10.

[0056] In some optional embodiments of the present invention, the first anti-rotation portion includes a second protrusion located on the inner wall of the mating hole 11, and the first anti-rotation mating portion includes a second groove located on the outer periphery of the mating protrusion 21. When the mating protrusion 21 is plugged into the mating hole 11, the second protrusion extends into the second groove to limit the rotation of the yoke 20 relative to the moving part 10.

[0057] In some optional embodiments of the present invention, Figure 6 , Fig. 9 As shown, the moving member 10 is provided with a first fixing hole 13, and the yoke 20 is provided with a second fixing hole 23. The first fixing member 61 cooperates with the first fixing hole 13 and the second fixing hole 23 respectively to fix the yoke 20 and the moving member 10 together, so that when the moving member 10 moves back and forth, the moving member 10 can drive the yoke 20 to move back and forth, and then the yoke 20 can drive the wheel to turn through the transmission member.

[0058] In some specific embodiments of the present invention, Figure 5 As shown, the first fixing member 61 passes through the first fixing hole 13 and is threadedly engaged with the second fixing hole 23 to fix the moving member 10 and the yoke 20 together.

[0059] In some embodiments, the first fixing member 61 is a screw, which passes through the first fixing hole 13 and extends into the second fixing hole 23, and the screw is threadedly engaged with the second fixing hole 23, wherein a portion of the yoke 20 is clamped between the screw head of the screw and the moving member 10 to achieve the fixation of the moving member 10 and the yoke 20, so that the moving member 10 can drive the yoke 20 to move back and forth when it moves back and forth, and then the yoke 20 can drive the wheel to turn through the transmission member.

[0060] In some specific embodiments of the present invention, Figure 6 , Fig. 9 As shown, the movable member 10 has a mating hole 11, the yoke 20 has a mating protrusion 21, the first fixing hole 13 is connected with the mating hole 11 and is located on the side of the mating hole 11 away from the yoke 20, and the second fixing hole 23 passes through the mating protrusion 21, so that the first fixing member 61 can pass through the second fixing hole 23 and cooperate with the first fixing hole 13, thereby realizing the fixed fit of the movable member 10 and the yoke 20.

[0061] When the mating protrusion 21 is plugged into the mating hole 11, at least a portion of the second fixing hole 23 is located in the mating hole 11, and the first fixing member 61 passes through the first fixing hole 13 and cooperates with the second fixing hole 23 to fix the moving member 10 and the yoke 20 together.

[0062] In some embodiments, Figure 6 As shown, the aperture of the first fixing hole 13 is smaller than the aperture of the matching hole 11, and a step portion is provided at the bottom end of the matching hole 11. When the matching protrusion 21 extends into the matching hole 11 and is plugged into the matching hole 11, the end of the matching protrusion 21 stops at the step portion. At this time, the first fixing member 61 can pass through the second fixing hole 23 and extend into the first fixing hole 13 to cooperate with the first fixing hole 13, thereby realizing the fixation of the yoke 20 and the moving member 10.

[0063] In some embodiments of the present invention, Figure 2 As shown, the steering drive device 1 also includes a shell 30, a housing 30 is provided with a housing chamber 31, the housing chamber 31 is used to accommodate a moving member 10, a sliding bearing 65 is provided in the housing chamber 31, and the moving member 10 includes a first shaft section 101, the first shaft section 101 and the sliding bearing 65 are slidably matched to support the reciprocating movement of the moving member 10, reduce the friction between the moving member 10 and the housing chamber 31 during the reciprocating movement, so that the moving member 10 can drive the yoke 20 to move when moving, and the yoke 20 can drive the wheel to steer through the transmission member when moving.

[0064] In some optional embodiments of the present invention, Figure 4 , Figure 6As shown, a second anti-rotation portion is provided on the moving member 10, and a second anti-rotation matching portion is provided in the accommodating cavity 31. The second anti-rotation matching portion cooperates with the second anti-rotation portion to limit the rotation of the moving member 10, so that the moving member 10 can only move back and forth in the accommodating cavity 31 without rotating, thereby preventing the moving member 10 from driving the yoke 20 to rotate, and preventing the position of the other end of the yoke 20 from changing, thereby affecting the connection between the yoke 20 and the transmission member.

[0065] In some specific embodiments of the present invention, Figure 6 As shown, the second stop portion is arranged on the second shaft segment 102 of the movable member 10, and the radial dimension of the second shaft segment 102 is smaller than the radial dimension of the first shaft segment 101, wherein the first shaft segment 101 is slidably matched with the sliding bearing 65, and the radial dimension of the sliding bearing 65 is adapted to the radial dimension of the first shaft segment 101, and the second stop portion is arranged on the second shaft segment 102 so as to maintain a radial distance from the sliding bearing 65, so that when the movable member 10 moves back and forth, the second stop portion on the second shaft segment 102 can be prevented from contacting the sliding bearing 65, and the edge of the second stop portion can be prevented from scratching the sliding or damaging the bearing 65.

[0066] In some embodiments, Figure 6 As shown, the second anti-rotation portion includes a third plane 14 located on the outer periphery of the second shaft segment 102, and the second anti-rotation fitting portion includes a fourth plane located on the inner wall of the accommodating chamber 31. The third plane 14 fits in contact with and slides with the fourth plane so that when limiting the rotation of the moving part 10, it will not affect the reciprocating movement of the moving part 10, so that the moving part 10 can only move back and forth in the accommodating chamber 31 without rotating, thereby preventing the moving part 10 from driving the yoke 20 to rotate, and preventing the position of the other end of the yoke 20 from changing, affecting the connection between the yoke 20 and the transmission part.

[0067] In some embodiments, the second anti-rotation portion includes a third groove located on the outer periphery of the second shaft segment 102, and the second anti-rotation mating portion includes a third protrusion located on the inner wall of the accommodating chamber 31, and the third groove extends along the moving direction of the moving part 10, and the third protrusion extends into the third groove and slidably cooperates with the third groove, so as to not affect the reciprocating movement of the moving part 10 when limiting the rotation of the moving part 10, so that the moving part 10 can only move back and forth in the accommodating chamber 31 without rotating, thereby preventing the moving part 10 from driving the yoke 20 to rotate, and preventing the position of the other end of the yoke 20 from changing, affecting the connection between the yoke 20 and the transmission part.

[0068] In some embodiments, the second anti-rotation portion includes a fourth protrusion located on the outer periphery of the second shaft segment 102, and the second anti-rotation mating portion includes a fourth groove located on the inner wall of the accommodating chamber 31, the fourth groove extends along the moving direction of the moving member 10, and the fourth protrusion extends into the fourth groove and slidably cooperates with the fourth groove, so as to not affect the reciprocating movement of the moving member 10 when limiting the rotation of the moving member 10, so that the moving member 10 can only move back and forth in the accommodating chamber 31 without rotating, thereby preventing the moving member 10 from driving the yoke 20 to rotate, and preventing the position of the other end of the yoke 20 from changing, affecting the connection between the yoke 20 and the transmission member.

[0069] In some examples, the maximum radial dimension of the second shaft segment 102 is smaller than the radial dimension of the sliding bearing 65, that is, when the second shaft segment 102 moves into the sliding bearing 65, there is a gap between the fourth protrusion and the sliding bearing 65 to prevent the fourth protrusion from contacting the sliding bearing 65 and to prevent the fourth protrusion from scratching or damaging the sliding bearing 65 during reciprocating movement.

[0070] In some embodiments of the present invention, Figure 2 As shown, the steering drive device 1 of the wheel also includes a shell 30 and a third anti-rotation portion 66. The shell 30 is provided with a accommodating cavity 31 for accommodating the moving member 10. The inner wall of the accommodating cavity 31 is provided with a guide groove 36. The third anti-rotation portion 66 is provided on the moving member 10 and slidingly cooperates with the guide groove 36 to limit the rotation of the moving member 10, so that the moving member 10 can only move back and forth but not rotate, thereby preventing the moving member 10 from driving the yoke 20 to rotate, thereby preventing the position of the other end of the yoke 20 from changing, and affecting the connection between the yoke 20 and the transmission member.

[0071] In some optional embodiments of the present invention, Figure 4 As shown, the movable member 10 is provided with a mounting hole 16, and the third stop portion 66 is fixedly matched with the mounting hole 16 to fix the third stop portion 66 on the movable member 10, and the rotation of the movable member 10 is limited by the cooperation between the third stop portion 66 and the guide groove 36, so that the movable member 10 can only move back and forth in the accommodating chamber 31 without rotating, thereby preventing the movable member 10 from driving the yoke 20 to rotate, and preventing the position of the other end of the yoke 20 from changing, thereby affecting the connection between the yoke 20 and the transmission member.

[0072] In some examples, one end of the third stop portion 66 has an external thread and the mounting hole 16 has an internal thread. One end of the third stop portion 66 is fixed to the mounting hole 16 by a thread, and the other end of the third stop portion 66 is slidably matched with the guide groove 36. The third stop portion 66 and the moving part 10 are matched to limit the rotation of the moving part 10, so that the moving part 10 can only move back and forth in the accommodating chamber 31 without rotating, thereby preventing the moving part 10 from driving the yoke 20 to rotate, and preventing the extension direction of the other end of the yoke 20 from changing, thereby affecting the connection between the yoke 20 and the transmission part.

[0073] In some optional embodiments of the present invention, the steering drive device 1 of the wheel also includes a detection device, which is used to detect the moving position of the moving part 10. By detecting the moving position of the moving part 10, the moving distance of the yoke 20 and the transmission part can be indirectly obtained, and then the steering angle of the wheel can be obtained.

[0074] The detection device may be a laser distance measuring sensor, an ultrasonic distance measuring sensor or an infrared distance measuring sensor, and no further restrictions are imposed here.

[0075] In some specific embodiments of the present invention, Figure 2 As shown, the detection device includes a first sensing member and a second sensing member 68, the first sensing member is arranged on the shell 30, and the second sensing member 68 is arranged at the end of the third stop portion 66. When the moving member 10 moves back and forth, the moving member 10 will drive the third stop portion 66 to move, and the third stop portion 66 will drive the second sensing member 68 to move. When the second sensing member 68 is in different positions, the first sensing member can sense different signals, and then the positions of the second sensing member 68 and the third stop portion 66 can be determined according to the sensed signals, and then the moving position of the moving member 10 can be obtained, and the moving distance of the yoke 20 and the transmission member can be obtained, and then the steering angle of the wheel can be obtained.

[0076] In some embodiments, Figure 2 As shown, the guide groove 36 connects the inside and outside of the accommodating cavity 31, one end of the third anti-rotation part 66 extends into the mounting hole 16 and is fixed to the mounting hole 16, and the other end is located in the guide groove 36 and slides with the guide groove 36, and the second sensing member 68 is provided at the other end of the third anti-rotation part 66, and the second sensing member 68 is located in the guide groove 36. When the moving member 10 moves back and forth and drives the third anti-rotation part 66 and the second sensing member 68 to move, the signal sensed by the first sensing member changes, and the moving position of the moving member 10 can be measured.

[0077] In some embodiments of the present invention, Figure 5 , Fig. 9As shown, a first connecting arm 24 and a second connecting arm 25 are provided at one end of the yoke 20 facing away from the moving member 10, and an end portion of the transmission member is clamped between the first connecting arm 24 and the second connecting arm 25. Since the position of the transmission member is fixed, the end portion of the transmission member can be fixed between the first connecting arm 24 and the second connecting arm 25 only when the first connecting arm 24 and the second connecting arm 25 are in specified positions.

[0078] Among them, the moving part 10 is provided with a first fixing hole 13, and the yoke 20 is provided with a second fixing hole 23. When the yoke 20 and the moving part 10 cooperate with each other through the first stop part and the first stop matching part, the position of the yoke 20 can be determined. At this time, the first connecting arm 24 and the second connecting arm 25 are in the specified position, so that the first fixing part 61 cooperates with the first fixing hole 13 and the second fixing hole 23 respectively to fix the yoke 20 and the moving part 10 together. At this time, due to the cooperation between the first stop part and the first stop matching part, even if the yoke 20 is subjected to torque, it will not rotate relative to the moving part 10, so as to ensure that the first connecting arm 24 and the second connecting arm 25 are in the specified position. At this time, the first connecting arm 24, the transmission part and the second connecting arm 25 can be fixed together.

[0079] In some embodiments, Fig. 9 As shown, the first connecting arm 24 is provided with a third fixing hole 241, the second connecting arm 25 is provided with a fourth fixing hole 252, and the end of the transmission member is provided with a fifth fixing hole. When the first connecting arm 24 and the second connecting arm 25 are in a specified position, the third fixing hole 241, the fourth fixing hole 252 and the fifth fixing hole are directly opposite to each other in the axial direction of the fifth fixing hole. At this time, the second fixing member can pass through the third fixing hole 241, the fifth fixing hole and the fourth fixing hole 252 to fix the yoke 20 and the transmission member together.

[0080] In some examples, such as Fig. 9 As shown, the second fixing member is a bolt, which passes through the third fixing hole 241, the fifth fixing hole and the fourth fixing hole 252 in sequence, and the nut cooperates with the bolt thread to clamp the first connecting arm 24, the end of the transmission member and the second connecting arm 25 between the nut and the bolt head, thereby fixing the first connecting arm 24, the transmission member and the second connecting arm 25 together.

[0081] Among them, a first recessed groove 245 is provided on the side of the first connecting arm 24 facing away from the second connecting arm 25. The first recessed groove 245 is used to accommodate the bolt head to prevent the bolt head from protruding from the surface of the first connecting arm 24 and to prevent the bolt head from being accidentally touched, thereby reducing the possibility of loosening the nut and bolt due to accidental touch.

[0082] A second recessed groove 255 is provided on the side of the second connecting arm 25 facing away from the first connecting arm 24. The second recessed groove 255 is used to accommodate the nut to prevent the nut from protruding from the surface of the second connecting arm 25 and to prevent the nut from being accidentally touched, thereby reducing the possibility of the nut and bolt being loosened due to accidental touching.

[0083] In some specific embodiments of the present invention, Figure 5-Figure 9 As shown, the steering drive device 1 includes a moving member 10 , a yoke 20 and a housing 30 . An accommodating chamber 31 for accommodating the moving member 10 is provided in the housing 30 . The moving member 10 can reciprocate in the accommodating chamber 31 .

[0084] The movable member 10 has a mating hole 11 at one end facing the yoke 20, and a first plane 12 is provided on the inner wall of the mating hole 11. The yoke 20 has a mating protrusion 21 at one end facing the movable member 10, and a second plane 22 is provided on the outer periphery of the mating protrusion 21. When the mating protrusion 21 is plugged into the mating hole 11, the first plane 12 fits with the second plane 22. By fitting the first plane 12 with the second plane 22, the rotation of the mating protrusion 21 in the mating hole 11 is limited, and the rotation of the yoke 20 relative to the movable member 10 can be limited.

[0085] The movable member 10 is provided with a first fixing hole 13, the first fixing hole 13 is connected with the matching hole 11 and is located on the side of the matching hole 11 away from the yoke 20, the yoke 20 is provided with a second fixing hole 23, the second fixing hole 23 passes through the matching protrusion 21, and the first fixing member 61 passes through the first fixing hole 13 and is threadedly engaged with the second fixing hole 23 to fix the movable member 10 and the yoke 20 together.

[0086] A third plane 14 is disposed on the outer periphery of the second shaft section 102 of the moving member 10, and a fourth plane is disposed on the inner wall of the accommodating cavity 31. The third plane 14 fits and slides with the fourth plane so that the moving member 10 can only reciprocate in the accommodating cavity 31 without rotating.

[0087] The movable member 10 is provided with a mounting hole 16, and a guide groove 36 is provided on the inner wall of the accommodating cavity 31. One end of the third anti-rotation portion 66 is fixed to the mounting hole 16 by a thread, and the other end is slidably matched with the guide groove 36 to limit the rotation of the movable member 10 so that the movable member 10 can only move back and forth in the accommodating cavity 31 without rotating.

[0088] The yoke 20 includes a first connecting arm 24 and a second connecting arm 25 that are arranged opposite to each other. The first connecting arm 24 is provided with a third fixing hole 241, the second connecting arm 25 is provided with a fourth fixing hole 252, and the end of the transmission member is provided with a fifth fixing hole. When the first connecting arm 24 and the second connecting arm 25 are in a specified position, the third fixing hole 241, the fourth fixing hole 252 and the fifth fixing hole are opposite to each other in the axial direction of the fifth fixing hole. At this time, the second fixing member can pass through the third fixing hole 241, the fifth fixing hole and the fourth fixing hole 252 to fix the yoke 20 and the transmission member together.

[0089] Among them, the lengths of the first plane 12 and the third plane 14 both extend along the axial direction of the first fixing hole 13. When the movable part 10 rotates around the axial direction of the first fixing hole 13, the extension direction of the length of the first plane 12 and the third plane 14 will not change, but the extension direction of the width of the first plane 12 and the third plane 14 will change.

[0090] The length of the second plane 22 extends along the axial direction of the second fixing hole 23 . When the yoke 20 rotates around the axial direction of the second fixing hole 23 , the extension direction of the length of the second plane 22 does not change, but the extension direction of the width of the second plane 22 changes.

[0091] The lengths of the first connecting arm 24 and the second connecting arm 25 both extend along the axial direction of the second fixing hole 23. When the yoke 20 rotates around the axial direction of the second fixing hole 23 and the positions of the first connecting arm 24 and the second connecting arm 25 change, the extension direction of the length of the first connecting arm 24 and the second connecting arm 25 will not change, but the extension direction of the width of the first connecting arm 24 and the second connecting arm 25 will change.

[0092] In some examples, when the first connecting arm 24 and the second connecting arm 25 are in a specified position and the angle between the extension direction of the width of the first connecting arm 24 and the second connecting arm 25 and the horizontal direction is a, the third fixing hole 241, the fourth fixing hole 252 and the fifth fixing hole are opposite to each other in the axial direction of the fifth fixing hole. At this time, the second fixing member can pass through the third fixing hole 241, the fifth fixing hole and the fourth fixing hole 252 to fix the yoke 20 and the transmission member together.

[0093] Since the moving member 10 is arranged in the accommodating cavity 31, the moving member 10 can only move back and forth in the accommodating cavity 31 but cannot rotate in the accommodating cavity 31. The yoke 20 is fixed to the moving member 10 and cannot rotate relative to the moving member 10. After the moving member 10 is arranged in the accommodating cavity 31, the extension direction of the width of the first plane 12 is determined. At this time, after the yoke 20 is fixed on the moving member 10, the extension direction of the width of the first connecting arm 24 and the second connecting arm 25 is also determined.

[0094] Specifically, when assembling the steering drive device 1, it is possible to measure in advance whether the angle between the axial direction of the mounting hole 16 on the movable part 10 and the extension direction of the width of the third plane 14 is c. Since the third limiting portion slides with the guide groove 36 on the shell 30, when the movable part 10 is arranged in the accommodating cavity 31, the axial direction of the mounting hole 16 has been determined, so that the angle between the axial direction of the mounting hole 16 on the movable part 10 and the extension direction of the width of the third plane 14 is c, so as to ensure that when the third limiting portion slides with the guide groove 36, the third plane 14 is in contact with the fourth plane, so that the movable part 10 can be smoothly installed in the accommodating cavity 31. At this time, the extension direction of the width of the first plane 12 on the movable part 10 is determined.

[0095] Measure in advance whether the angle between the extension direction of the width of the second plane 22 on the yoke 20 and the extension direction of the width of the first connecting arm 24 is b. Since the second plane 22 is in contact with the first plane 12, after the extension direction of the width of the first plane 12 is determined, the extension direction of the width of the second plane 22 is also determined, so that the angle between the extension direction of the width of the second plane 22 and the extension direction of the width of the first connecting arm 24 is b, to ensure that when the yoke 20 is fixed on the moving part 10, the angle between the extension direction of the width of the first connecting arm 24 and the second connecting arm 25 and the horizontal direction is a, and the first connecting arm 24 and the second connecting arm 25 are at the specified position.

[0096] That is to say, when assembling the steering drive device 1, it is only necessary to measure the angle between the axial direction of the mounting hole 16 and the extension direction of the width of the third plane 14 before assembly, and to measure the angle between the extension direction of the width of the second plane 22 on the yoke 20 and the extension direction of the width of the first connecting arm 24 to determine whether the structure of the moving part 10 and the yoke 20 meets the requirements. There is no need to measure the angle between the extension direction of the width of the first connecting arm 24 and the horizontal direction after assembly, which reduces the possibility of repeated assembly, facilitates simplification of assembly steps, and reduces assembly difficulty.

[0097] What needs to be explained here is that the angles a, b and c can be a certain value or within a certain range, and there are no excessive restrictions here.

[0098] The vehicle according to the embodiment of the present utility model is described below. The vehicle according to the embodiment of the present utility model comprises a wheel and a wheel steering drive device 1 according to the above embodiment of the present utility model.

[0099] The yoke 20 is connected to the wheel through a transmission member to drive the wheel to turn. When the moving member 10 moves back and forth, the moving member 10 drives the yoke 20 to move back and forth. When the yoke 20 moves, it drives the wheel to turn through the transmission member to adjust the direction of the wheel and facilitate the vehicle to turn.

[0100] According to the vehicle of the embodiment of the utility model, by utilizing the steering drive device 1 of the wheel according to the above-mentioned embodiment of the utility model, the rotation of the yoke 20 is limited, thereby ensuring the position of the yoke 20 relative to the transmission member, so that the other end of the yoke 20 can be smoothly matched with the transmission member, thereby eliminating the need to repeatedly adjust the position of the yoke 20, thereby reducing the difficulty of installing the yoke 20 and simplifying the installation steps.

[0101] In some embodiments of the present invention, the wheel is the rear wheel of the vehicle, and the steering drive device 1 is used to drive the rear wheel of the vehicle to rotate so that the rear wheel of the vehicle can turn to adapt to the road conditions during the vehicle's driving.

[0102] In some embodiments, the vehicle includes two steering drive devices 1 and two rear wheels, and the two steering drive devices 1 independently drive the corresponding rear wheels to steer.

[0103] In some embodiments, each steering drive device 1 has a motor, and a part of the moving part 10 is formed as a screw. The motor is used to drive the nut to rotate. When the nut rotates, the rotational motion is converted into the moving motion of the screw, so that the moving part 10 can move back and forth, thereby driving the yoke 20 to move back and forth. When the yoke 20 moves, it drives the wheel to turn through the transmission part to adjust the direction of the wheel and facilitate the vehicle to turn.

[0104] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0105] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0106] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0107] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0109] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wheel steering drive device (1), characterized in that: include: A reciprocating movable member (10); a yoke (20), one end of which is fixed to the moving member (10) so as to be driven to move by the moving member (10), and the other end of which is adapted to cooperate with a transmission member so as to drive the wheel to turn through the transmission member when the yoke (20) moves. One of the moving member (10) and the yoke (20) is provided with a first anti-rotation portion, and the other is provided with a first anti-rotation matching portion matching with the first anti-rotation portion to limit the rotation of the yoke (20) relative to the moving member (10).

2. The wheel steering drive device (1) according to claim 1, characterized in that: One of the moving member (10) and the yoke (20) has a matching hole (11), and the other has a matching protrusion (21), and the matching protrusion (21) is plug-fitted with the matching hole (11). Wherein, the first anti-rotation portion is arranged on the inner wall of the matching hole (11), and the first anti-rotation matching portion is arranged on the outer periphery of the matching protrusion (21).

3. The wheel steering drive device (1) according to claim 2, characterized in that: The first anti-rotation portion includes a first plane (12) located on the inner wall of the matching hole (11), and the first anti-rotation matching portion includes a second plane (22) located on the outer periphery of the matching protrusion (21); and\or, The first anti-rotation portion comprises a first groove located on the inner wall of the matching hole (11), and the first anti-rotation matching portion comprises a first protrusion located on the outer periphery of the matching protrusion (21); And\or, the first anti-rotation portion includes a second protrusion located on the inner wall of the matching hole (11), and the first anti-rotation matching portion includes a second groove located on the outer periphery of the matching protrusion (21).

4. The wheel steering drive device (1) according to claim 2, characterized in that: The movable member (10) is provided with a first fixing hole (13), the yoke (20) is provided with a second fixing hole (23), and the first fixing member (61) is respectively matched with the first fixing hole (13) and the second fixing hole (23) to fix the yoke (20) and the movable member (10) together.

5. The wheel steering drive device (1) according to claim 4, characterized in that: The first fixing member (61) passes through the first fixing hole (13) and is threadedly engaged with the second fixing hole (23).

6. The wheel steering drive device (1) according to claim 4, characterized in that: The movable member (10) has the matching hole (11), the yoke (20) has the matching protrusion (21), the first fixing hole (13) is connected to the matching hole (11) and is located on a side of the matching hole (11) away from the yoke (20), and the second fixing hole (23) passes through the matching protrusion (21).

7. The wheel steering drive device (1) according to claim 1, characterized in that: It also includes a housing (30), wherein a housing cavity (31) for accommodating the moving element (10) is provided in the housing (30); A sliding bearing (65) is provided in the accommodating cavity (31), and the moving member (10) comprises a first shaft section (101), wherein the first shaft section (101) is in sliding cooperation with the sliding bearing (65).

8. The wheel steering drive device (1) according to claim 7, characterized in that: The moving member (10) is provided with a second anti-rotation portion, and the accommodating cavity (31) is provided with a second anti-rotation matching portion that matches the second anti-rotation portion, so as to limit the rotation of the moving member (10).

9. The wheel steering drive device (1) according to claim 8, characterized in that: The second anti-rotation portion is arranged on the second shaft section (102) of the moving member (10), and the radial dimension of the second shaft section (102) is smaller than the radial dimension of the first shaft section (101).

10. The wheel steering drive device (1) according to claim 9, characterized in that: The second anti-rotation portion includes a third plane (14) located on the outer periphery of the second shaft segment (102), and the second anti-rotation matching portion includes a fourth plane located on the inner wall of the accommodating cavity (31); And\or, the second anti-rotation portion includes a third groove located on the outer periphery of the second shaft segment (102), and the second anti-rotation matching portion includes a third protrusion located on the inner wall of the accommodating cavity (31); And\or, the second anti-rotation portion includes a fourth protrusion located on the outer periphery of the second shaft segment (102), and the second anti-rotation fitting portion includes a fourth groove located on the inner wall of the accommodating cavity (31).

11. The wheel steering drive device (1) according to any one of claims 1 to 10, characterized in that: It also includes a housing (30) and a third anti-rotation portion (66), wherein a receiving cavity (31) for receiving the moving member (10) is provided in the housing (30); A guide groove (36) is provided on the inner wall of the accommodating cavity (31). The third anti-rotation portion (66) is disposed on the moving member (10) and is slidably matched with the guide groove (36) to limit the rotation of the moving member (10).

12. The wheel steering drive device (1) according to claim 11, characterized in that: The moving member (10) is provided with a mounting hole (16), and the third anti-rotation portion (66) is fixedly matched with the mounting hole (16).

13. The wheel steering drive device (1) according to claim 11, characterized in that: It also comprises a detection device for detecting the moving position of the moving member (10).

14. The wheel steering drive device (1) according to claim 13, characterized in that: The detection device comprises a first sensing member and a second sensing member (68), wherein the first sensing member is arranged on the housing (30), and the second sensing member (68) is arranged on the end of the third anti-rotation portion (66).

15. A vehicle, characterized in that: include: wheel; A steering drive device (1), wherein the steering drive device (1) is a steering drive device (1) for a wheel according to any one of claims 1 to 14, wherein the yoke (20) is connected to the wheel via the transmission member to drive the wheel to steer.

16. The vehicle according to claim 15, characterized in that The wheels are rear wheels of the vehicle.

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