CN112706823A - Decoupling device, steering system and car - Google Patents
Decoupling device, steering system and car Download PDFInfo
- Publication number
- CN112706823A CN112706823A CN201911023008.9A CN201911023008A CN112706823A CN 112706823 A CN112706823 A CN 112706823A CN 201911023008 A CN201911023008 A CN 201911023008A CN 112706823 A CN112706823 A CN 112706823A
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- China
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- end shaft
- steering
- steering wheel
- decoupling
- hollow structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
Abstract
The invention relates to the field of automobiles, and discloses a decoupling device, a steering system and an automobile. Wherein the decoupling means comprises: the electric coupler component comprises an electric driving piece which is connected with the steering wheel end shaft or the steering gear end shaft to synchronously rotate and is used for driving the steering wheel end shaft and the steering gear end shaft to be decoupled or coupled; and a spiral cable wound around the outer periphery of the steering wheel end shaft or the steering end shaft, the incoming line end of the spiral cable being led out through a first lead portion that is stationary with respect to the electric driving member to be electrically connected to the electric driving member, the outgoing line end of the spiral cable being led out through a second lead portion that is stationary with respect to the vehicle body to be electrically connected to a power supply source of the electric driving member, the spiral cable having a stretch margin that does not break when the steering wheel end shaft or the steering end shaft rotates to a limit position. The decoupling device can protect the tire of the wheel, meanwhile, the cable of the decoupling device is prevented from being wound on a steering system at will, and the working reliability of the decoupling device is improved.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a decoupling device and a steering system, and further relates to an automobile.
Background
With the progress of science and technology, the demand of people for the entertainment function of the automobile game is continuously increased. The galloping games such as the best quality galloping and the QQ galloping can enable people to experience mad driving pleasure, and are widely pursued and loved by automobile enthusiasts. The game function is generally realized by operating a conventional keyboard or a professional game steering wheel on a PC terminal. The conventional keyboard can not truly simulate the hand feeling of steering of a driving control steering wheel, the equipment volume of the professional game steering wheel is large, the cost performance of the user for self-purchase and use is low, if the user operates the professional game steering wheel in a related entertainment place, the site limitation can be brought, and the use requirement of the user can not be met anytime and anywhere.
The game is directly experienced by a seat in the automobile through a steering wheel of the automobile. In practice, the inventor of the application finds that the steering system, the steering wheel and the steering gear end shaft of all automobiles on the market are in a meshed state for a long time. Even if the steering wheel is adjusted in the up-down direction or the front-back direction, the torque transmission structures (such as splines and the like) are not disengaged all the time, so that the tire is inevitably driven to move axially while the steering wheel is rotated, and the abrasion of the tire per se is extremely serious due to repeated static friction between the tire and the ground, so that the tire cannot be accepted by consumers.
If the existing steering system is modified, and the decoupling device is arranged on the steering system, the steering wheel and the wheels can be decoupled when the automobile enters a game mode, so that the situation that the wheels are driven to steer when the steering wheel is operated to rotate in the game mode is avoided, and tires of the wheels are protected better.
The decoupling device has few electric driving pieces, and can realize the decoupling and the coupling of the driving decoupling device, the simulation of game scenes, the transmission of road feeling and the like.
Due to the high precision requirement of the decoupling device, the electric drive is often fixed on the steering wheel end shaft or the steering gear end shaft, the steering wheel end shaft can rotate along the axial direction of the steering wheel along with the rotation of the steering wheel, and the steering gear end shaft can also rotate along the axial direction of the steering wheel along with the rotation of the steering wheel in a coupling state. The other end of the electric driving part is connected with a power supply through a cable, and the cable end is fixed and cannot rotate along with the rotation of the electric driving part, so that the cable is wound on a steering system at will, and failure modes such as breaking, connection falling and the like of the cable are easy to occur along with the lengthening of the service time.
Disclosure of Invention
One of the objectives of the present invention is to overcome at least some of the above problems of the prior art, and to provide a decoupling device, which can protect the tire of a vehicle wheel, and at the same time, prevent the cable of the decoupling device from being wound on the steering system, thereby improving the operational reliability of the decoupling device.
In order to achieve the above object, an aspect of the present invention provides a decoupling device, including:
the electric coupler component comprises an electric driving piece which is connected with the steering wheel end shaft or the steering gear end shaft to synchronously rotate and is used for driving the steering wheel end shaft and the steering gear end shaft to be decoupled or coupled;
and a spiral cable wound around the outer periphery of the steering wheel end shaft or the steering end shaft, the incoming line end of the spiral cable being led out through a first lead portion that is stationary with respect to the electric driving member to be electrically connected to the electric driving member, the outgoing line end of the spiral cable being led out through a second lead portion that is stationary with respect to the vehicle body to be electrically connected to a power supply source of the electric driving member, the spiral cable having a stretch margin that does not break when the steering wheel end shaft or the steering end shaft rotates to a limit position.
Preferably, the electrical decoupling component comprises:
a moving member movable from a coupling position to a decoupling position or from the decoupling position to the coupling position to decouple or couple the steering wheel end shaft and the steering gear end shaft;
the electric driving piece is used for providing driving force;
the transmission mechanism is used for transmitting the driving force provided by the electric driving piece to the moving piece so as to drive the moving piece to move from the coupling position to the decoupling position or from the decoupling position to the coupling position.
Preferably, the spiral cable is wound around a rotor provided coaxially with the steering wheel end shaft or the steering end shaft, the rotor being stationary with respect to the electric drive, the first lead portion being a lead hole formed in the rotor; and/or the presence of a gas in the gas,
the electric driving part is a motor, the transmission mechanism comprises a driving block, the driving block is connected with an output shaft of the motor in a synchronous rotation mode and in threaded connection with the moving part, and the driving block is used for converting the rotation of the output shaft into translation of the moving part.
Preferably, the rotor includes an annular turntable and a shaft sleeve extending from an inner edge portion of the annular turntable to one side in the axial direction, the shaft sleeve is sleeved on the outer side of the steering wheel end shaft or the steering gear end shaft, the spiral cable is wound around the outer periphery of the shaft sleeve, and the lead hole is formed in the shaft sleeve.
Preferably, the rotor is further covered with a stator, an annular space for accommodating the spiral cable is formed between the stator and the rotor, the stator is stationary with respect to the vehicle body, and the second lead portion is a lead hole formed in the stator.
Preferably, the steering wheel end shaft and the steering gear end shaft are coaxially arranged, and one of them has a hollow structure, and an axial portion of the other one protrudes into the hollow structure and an outer peripheral surface of the portion is radially spaced from an inner peripheral surface of the hollow structure to accommodate the moving member; an axial portion of the other has a first axial section and a second axial section, a radial spacing dimension between an outer peripheral surface of the first axial section and an inner peripheral surface of the hollow structure is smaller than a radial spacing dimension between an outer peripheral surface of the second axial section and the inner peripheral surface of the hollow structure; the moving member is translatable along an axial direction of the steering wheel end shaft and the steering gear end shaft to decouple or couple the steering wheel end shaft and the steering gear end shaft; at the coupling position, an outer sidewall of the moving member is combined with an inner circumferential surface of the hollow structure, and an inner sidewall is combined with an outer circumferential surface of the first axial section.
Preferably, the moving member is normally engaged with the hollow structural spline and splined to the first axial segment at a coupling location; and/or the presence of a gas in the gas,
the moving piece is a sleeve which is coaxially arranged with the steering wheel end shaft and the steering gear end shaft; and/or the presence of a gas in the gas,
the other is axially rotatably supported within the hollow structure by a bearing; and/or the presence of a gas in the gas,
the electric driving part and the transmission mechanism are both positioned outside the hollow structure, and an opening is formed in the side wall of the hollow structure so that the transmission mechanism is connected with the moving part.
Preferably, the hollow structure is a hollow cylinder, one end of the hollow cylinder is open, a flange flanging which expands radially outwards is formed at the open end, the bearing is installed in the bearing installation flange, the bearing installation flange is coaxially fixed with the flange flanging, the other end of the hollow cylinder penetrates through the bearing and is fixed with the inner ring of the bearing, the rotor is fixed on one side, back to the flange flanging, of the bearing installation flange, and the electric driving piece is fixed on the hollow structure.
Based on the decoupling device provided by the first aspect of the invention, the second aspect of the invention provides a steering system, which comprises the decoupling device according to the first aspect of the invention.
A third aspect of the present invention provides an automobile including the steering system according to the second aspect of the present invention, based on the steering system provided in the second aspect of the present invention.
The technical scheme provided by the invention has the following beneficial effects:
the decoupling device provided by the invention comprises an electrolytic coupling component, wherein the electrolytic coupling component can drive a steering wheel end shaft to be decoupled or coupled with a steering gear end shaft; and under the condition that the steering wheel end shaft is decoupled from the steering gear end shaft, the automobile enters a game mode, and the wheels cannot be driven to turn when a user operates the steering wheel to rotate, so that the abrasion of the tires of the wheels caused by repeated friction between the wheels and the ground after the automobile enters the game mode can be avoided, and the automobile tires can be better protected.
Further, the present invention winds a spiral cable around an outer circumference of a steering wheel end shaft or a steering end shaft, an incoming end of the spiral cable being drawn out through a first lead portion being stationary with respect to the electric driving member to electrically connect the electric driving member, an outgoing end of the spiral cable being drawn out through a second lead portion being stationary with respect to a vehicle body to electrically connect a power supply source of the electric driving member, since the second lead portion is stationary with respect to the vehicle body and the first lead portion is stationary with respect to the electric driving member, so that when the electric driving member rotates with the steering wheel end shaft or the steering end shaft, the cable is only pulled or reversely loosened at the outer circumference of the steering wheel end shaft or the steering end shaft, and a lead portion between the power source and the electrolytic coupling member will not be arbitrarily wound on the steering system, and a lead portion between the electric driving member and the spiral cable will not be arbitrarily wound on the steering system, the spiral cable having a margin of expansion which is not pulled apart when the steering wheel end shaft or the steering end shaft rotates to a limit position, therefore, the cable can be better protected, the reliable power supply of the power supply to the decoupling device is ensured, and the working reliability of the decoupling device is improved.
Drawings
FIG. 1 is a schematic structural view of a steering system without a spiral cable provided by an embodiment of the present invention;
FIG. 2 is a schematic structural view of a decoupling assembly without a spiral cable provided by an embodiment of the present invention;
FIG. 3 is a schematic structural view of a steering system having a spiral cable provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of the coupling of the decoupling assembly with the spiral cable to the wheel and steering system provided by the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a rotor, a stator and a spiral cable provided by an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a decoupling assembly having a spiral cable provided by an embodiment of the present invention;
fig. 7 is a block diagram of an automobile according to an embodiment of the present invention.
Description of the reference numerals
1-a steering wheel end shaft body; 2-a second mating member; 3-a diverter end shaft body; 4-a bearing; 5-a bearing; 6-a moving part; 7-a first mating member; 8-bearing mounting flange; 9-a drive block; 10-a motor; 11-a wire; 12-a vehicle body; 21-a stator; 22-a spiral cable; 23-a rotor; 24-a connector; 25-an intermediate adaptor; 100-an electrolytic coupling component.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right with reference to the accompanying drawings, unless otherwise specified. "inner and outer" refer to the inner and outer contours of the component itself.
Referring to fig. 1-2, an embodiment of the present invention provides a decoupling device, which has an electric decoupling element 100, where the electric decoupling element 100 includes an electric driving element installed to rotate synchronously with a steering wheel end shaft or a steering gear end shaft, and is used to drive the steering wheel end shaft and the steering gear end shaft to be coupled or decoupled; the steering wheel end shaft is an end shaft in transmission connection with a steering wheel, and when the end shaft is used for operating the steering wheel to rotate, the end shaft of the steering wheel can be driven to rotate synchronously; the steering gear end shaft refers to an end shaft in transmission connection with wheels, and under the condition that the steering wheel end shaft is coupled with the steering gear end shaft, the automobile enters a normal driving mode, and the wheels can be driven to steer by operating the steering wheel to rotate; and under the condition that the steering wheel end shaft is decoupled from the steering gear end shaft, the automobile enters a game mode, and the wheels cannot be driven to turn when a user operates the steering wheel to rotate, so that the abrasion of the tires of the wheels caused by repeated friction between the wheels and the ground after the automobile enters the game mode can be avoided, and the automobile tires can be better protected.
The electric drive can only carry out a decoupling or coupling action when it is switched on, and the electric drive needs to be connected to a power supply by means of a line 11 for supplying the power.
In the embodiment shown in fig. 1-2, the decoupling assembly is not provided with the spiral cable 22, and when the decoupling assembly rotates along with the end shaft of the steering wheel, the conducting wire 11 is easy to be wound on the steering system randomly, and the conducting wire 11 is easy to break or be connected with a power supply to fall off along with the increase of the service time.
Referring to fig. 3-6, in order to solve the technical problem, the structure of the decoupling device is further optimized by the present invention. Specifically, the spiral cable 22 is attached to the decoupling member 100 such that the spiral cable 22 is wound around the outer periphery of the steering wheel end shaft or the steering end shaft, the inlet end of the spiral cable 22 is led out through a first lead portion that is stationary with respect to the electric drive element to electrically connect the electric drive element, and the outlet end of the spiral cable 22 is led out through a second lead portion that is stationary with respect to the vehicle body 12 to electrically connect the electric power supply source of the electric drive element.
Since the second lead portion is stationary with respect to the vehicle body 12 and the first lead portion is stationary with respect to the electric drive, when the electric drive rotates with the steering wheel end shaft or the steering gear end shaft, the cable is only pulled tight or loosened in the opposite direction at the outer periphery of the steering wheel end shaft or the steering gear end shaft, and the wire portion between the power supply and the decoupling member 100 will not be arbitrarily wound on the steering system, nor will the wire portion between the electric drive and the spiral cable 22 be arbitrarily wound on the steering system; in addition, in order to avoid the spiral cable 22 from being pulled apart when the steering wheel end shaft or the steering end shaft is rotated to the extreme position, the spiral cable 22 is provided with a telescopic margin that does not pull apart under the condition, thereby ensuring reliable electrical connection between the electric driving member and the power supply source. For example, the rotatable range of the steering wheel of a common passenger car is 2.5-3 turns at present, and the design of the spiral cable 22 in the embodiment of the present invention can ensure the rotation amount of 3.5-4 turns, that is, the left and right half-turn margins are added in the rotatable range of the steering system, so that the spiral cable 22 can be ensured not to be broken when the steering system rotates.
Preferably, the spiral cable 22 is designed by a coil spring type wire, and when the coil spring is stretched or compressed, the coil spring can absorb the energy of rotation; when reversed, the rotational energy is released again. The structure ensures that the lead at the fixed end of the vehicle body cannot be wound in any rotation; the lead does not generate plastic deformation to absorb rotation energy, so that the lead can run reliably for a long time and does not lose effectiveness such as breaking, falling and the like.
In a preferred embodiment, the decoupling assembly 100 comprises a mobile element 6, which mobile element 6 is movable from a coupling position to a decoupling position or from said decoupling position to said coupling position to decouple or couple the steering wheel end shaft and the steering gear end shaft; the electric driving piece is used for providing driving force; a transmission mechanism for transmitting the driving force provided by the electric driving member to the moving member 6 to drive the moving member 6 to move from the coupling position to the decoupling position or from the decoupling position to the coupling position.
In particular, with reference to fig. 5-6, the electric drive may be, for example, an electric motor 10, and the transmission mechanism includes a drive block 9, the drive block 9 being coaxially fixed on an output shaft of the electric motor 10 and being in threaded connection with the moving member 6 so as to be able to convert the rotation of the output shaft into a translation of the moving member 6 so that the moving member 6 can move from the decoupling position to the coupling position or vice versa.
More specifically, as shown in fig. 2, the driving block 9 is a cylindrical structure, and the cylindrical structure is coaxially fixed with the output shaft of the motor 10; the cylindrical structure has threads formed on its outer peripheral surface. And a tooth structure capable of being in threaded connection with the cylindrical structure is formed on the outer side wall of the moving piece 6. When the motor 10 rotates, the cylindrical structure rotates synchronously with the motor 10, and drives the moving member 6 to translate.
The first lead part is stationary with respect to the electric driver, and its specific structure may be various. In a preferred embodiment of the present invention, the spiral cable 22 is wound around a rotor 23 disposed coaxially with the steering wheel end shaft or the steering gear end shaft, the rotor 23 is stationary with respect to the electric driving element, and the first lead portion is a lead hole formed on the rotor 23.
Specifically, referring to fig. 3-6, the steering end shaft and the steering wheel end shaft are coaxially disposed, the electric drive member is fixed to the steering end shaft and is stationary relative to the steering end shaft, the rotor 23 is fixed to the upper end of the steering end shaft, and is coaxial with the steering wheel end shaft and the steering end shaft but is not connected to the steering wheel end shaft, and in the case where the steering wheel end shaft and the steering end shaft are decoupled, the rotation of the steering wheel end shaft does not rotate the rotor 23. Only when the steering wheel end shaft and the steering gear end shaft are coupled, the steering gear end shaft is driven to rotate when the steering wheel end shaft rotates, and the rotor 23 is fixed on the steering gear end shaft, so that the rotor 23 can be driven to rotate.
The structure of the rotor 23 may be various, and in a preferred embodiment of the present invention, the rotor 23 includes an annular turntable and a shaft sleeve extending from an inner edge portion of the annular turntable to one axial side, the shaft sleeve is sleeved outside the steering wheel end shaft or the steering gear end shaft, and the spiral cable 22 is wound around an outer circumference of the shaft sleeve. Preferably, the annular turntable may be, for example, annular. It will be appreciated that the annular turntable may also be of other shapes such as square, triangular or other profile.
The spiral cable 22 is wound around the outer circumference of the sleeve and its weight is supported by an annular turntable. The inlet end of the spiral cable 22 is led out from the innermost circumference of the spiral cable 22, and a first lead portion is formed on the side wall of the boss. The inlet end of the spiral cable 22 is led out from a lead hole formed on the side wall of the sleeve to be electrically connected with the electric driving element.
Further, the rotor 23 is covered with a stator 21, an annular space for accommodating the spiral cable 22 is formed between the stator 21 and the rotor 23, the stator 21 is stationary with respect to the vehicle body 12, and the second lead portion is a lead hole formed in the stator 21.
Specifically, as shown in fig. 4, the stator 21 may be fixed on the vehicle body 12 by an intermediate adaptor 25 and a connector 24, and the shape of the stator 21 is adapted to the shape of the rotor 23, and the stator 21 covers the rotor 23, but is separated from the rotor 23, so that the rotor 23 does not rotate the stator 21.
More specifically, the stator 21 includes an annular cover plate such as an annular cover plate that is coaxial with and independent from the steering wheel end shaft and does not rotate when the steering wheel end shaft rotates, and an annular side wall such as an annular side wall that extends from an outer ring edge portion of the annular cover plate along one side in the axial direction. The radial dimension of the inner ring of the annular cover plate is equivalent to that of the shaft sleeve of the rotor 23, and the radial dimension of the annular side wall is equivalent to that of the outer ring of the annular turntable. Thus, when the stator 21 is covered on the rotor 23, an annular space for accommodating the spiral cable 22 can be formed between the stator and the rotor 23.
The second lead portion may be formed on an annular sidewall of the stator 21. That is, a lead hole is formed in the annular side wall as a second lead portion, and the outlet end of the spiral cable 22 is led out from the outermost cable turn of the spiral cable 22, which is led out from the lead hole in the annular side wall to be electrically connected to the power supply.
The decoupling scheme of the steering wheel end shaft and the steering gear end shaft can be various, for example, the steering wheel end shaft and the steering gear end shaft are coaxially arranged and axially spaced, and the moving member 6 is sleeved on the outer sides of the steering wheel end shaft and the steering gear end shaft and can move along the axial direction of the steering wheel end shaft and the steering gear end shaft under the driving of the electric driving member. The steering wheel end shaft and the steering gear end shaft are coupled when the moving member 6 is moved to engage with both the steering wheel end shaft and the steering gear end shaft, for example, in a spline joint, and the steering wheel end shaft and the steering gear end shaft are decoupled when the moving member 6 is moved to engage with only one of the steering wheel end shaft and the steering gear end shaft.
As another example, referring to fig. 6, the steering wheel end shaft and the steering gear end shaft are coaxially arranged, and one of them has a hollow structure, and the other has a portion in the axial direction that protrudes inside the hollow structure and has an outer peripheral surface that is radially spaced from an inner peripheral surface of the hollow structure to accommodate the moving member 6; an axial portion of the other has a first axial section and a second axial section, a radial spacing dimension between an outer peripheral surface of the first axial section and an inner peripheral surface of the hollow structure is smaller than a radial spacing dimension between an outer peripheral surface of the second axial section and the inner peripheral surface of the hollow structure; the mobile element 6 is able to translate along the axial direction of the steering wheel end shaft and the steering gear end shaft to decouple or couple the steering wheel end shaft and the steering gear end shaft; at the coupling position, the outer side wall of the moving member 6 is joined to the inner peripheral surface of the hollow structure, and the inner side wall is joined to the outer peripheral surface of the first axial section.
The following describes an embodiment of the present invention by taking an example in which a steering end shaft has a hollow structure, and a steering wheel end shaft extends into the steering end shaft from an end opening of the hollow structure.
Referring to fig. 2 and 6, in order to reduce the difficulty of modifying the decoupling function of the steering system, the steering end shaft has a first fitting member 7 having a hollow structure and a steering end shaft body 3, and the steering end shaft body 3 is coaxially fixed to the lower end of the first fitting member 7. The steering wheel end shaft is provided with a second fitting piece 2 and a steering wheel end shaft body 1, and the steering wheel end shaft body 1 and the second fitting piece 2 are connected to rotate synchronously. For example, the steering wheel end shaft body 1 protrudes into the second fitting 2 and is splined and held coaxially with the second fitting 2.
The first matching piece 7 and the second matching piece 2 are used for fixing the steering gear end shaft body 3 and the steering wheel end shaft body 1 respectively, and the moving piece 6 is used for decoupling or coupling the first matching piece 7 and the second matching piece 2 so as to realize decoupling or coupling between the steering wheel end shaft and the steering gear end shaft; therefore, decoupling or coupling between the steering wheel end shaft and the steering gear end shaft can be realized by processing smaller components, structures such as splines and the like matched with clutch elements to realize decoupling do not need to be processed on the steering wheel end shaft body 1 and the steering gear end shaft body 3, and the reconstruction difficulty of the decoupling function of a steering system is facilitated to be simplified.
Preferably, a cylindrical cavity is formed in the first fitting member 7, and the second fitting member 2 extends into the cavity from one axial end of the first fitting member 7; the outer circumferential surface of the second mating member 2 is radially spaced from the inner circumferential surface of the first mating member 7, and the portion of the second mating member 2 protruding into the cavity has a first axial section and a second axial section of different radial dimensions, and the moving member 6 is accommodated in the radial space.
In particular, the first fitting element 7 may be a hollow cylinder and the second fitting element 2 may be a cylindrical structure having a radial dimension smaller than the radial dimension of the hollow cylinder. Thus, when the second fitting member 2 is inserted into the first fitting member 7, an annular space is formed therebetween; since the first and second axial sections of the second fitting part 2 projecting into the cavity have different radial dimensions, the annular space also has two annular sections with different radial spacings in the axial direction; when the moving piece 6 axially moves to an annular section with a smaller radial dimension, the inner side and the outer side of the moving piece 6 are respectively connected with the second matching piece 2 and the first matching piece 7, so that the coupling between the second matching piece 2 and the first matching piece 7 is realized; when the moving member 6 moves to the ring segment with a larger radial dimension, the inner side of the moving member 6 is separated from the second mating member 2, and the outer side thereof is connected with the first mating member 7, so that the second mating member 2 and the first mating member 7 are decoupled.
The moving member 6 can be connected with the first mating member 7 and the second mating member 2 in various ways to achieve the coupling therebetween.
For example, an axially through groove is formed on the inner side surface of the moving member 6, and a protrusion is formed on the outer side surface of the second fitting member 2 corresponding to the groove, and the protrusion can move axially in the groove; the coupling between the second mating member 2 and the moving member 6 is achieved by the reception of the protrusions in the recesses, which brings the moving member 6 into synchronous rotation when the second mating member 2 rotates. The positions of the protrusions and the grooves on the moving member 6 and the second mating member 2 can be interchanged as long as circumferential limitation between the two is achieved.
The first mating member 7 can also be coupled with the moving member 6 in the same manner as described above, except that a groove or a protrusion is formed on the inner side surface of the first mating member 7 or the outer side surface of the moving member 6.
With reference to fig. 1 and 2, in a preferred implementation, the radial dimension of the first axial segment is greater than the radial dimension of the second axial segment and is close to the axially opposite end of the first fitting 7; the moving member 6 is a sleeve coaxial with the first mating member 7, the sleeve is spline-coupled to the first mating member 7 and spline-connected to the first axial segment of the second mating member at a coupling position.
Referring to fig. 2, the lower portion of the second fitting member 2 protruding into the cavity has a larger radial dimension, and the upper portion has a smaller radial dimension; the inner and outer peripheral surfaces of the sleeve are respectively provided with an internal spline and an external spline,
a first spline is formed on the outer peripheral surface of the lower part of the second fitting piece 2 corresponding to the internal spline; a second spline is formed on the inner peripheral surface of the first fitting member 7 corresponding to the external spline; the external spline of the sleeve is always combined with the first spline of the first fitting piece 7, and the sleeve moves axially downwards until the internal spline is combined with the first spline to realize the coupling between the first fitting piece 7 and the second fitting piece 2; the decoupling between the first fitting piece 7 and the second fitting piece 2 is achieved when the sleeve is moved axially upwards to disengage its internal splines from said first splines.
As mentioned above, when the first mating member 7 and the second mating member 2 are decoupled, the first mating member 7 is stationary when the steering wheel rotates the second mating member 2.
In order to improve the mounting stability of the first fitting member 7 and the second fitting member 2, the portion of the second fitting member 2 protruding into the cavity of the first fitting member 7 is supported in the first fitting member 7 by the rotational bearings 4 and 5.
Specifically, referring to fig. 2, a flange extending radially outward is formed at an upper end opening portion of the first fitting member 7, a through hole is formed in a lower end bottom plate, and the end shaft body 3 of the steering gear extends into the through hole from bottom to top, and can be connected with the through hole in an interference fit manner, or can be fixed with the first fitting member 7 through a connecting member. In addition, a bearing 5 is installed in the through hole, and the steering gear end shaft body 3 and the bearing 5 are separated from each other; an end surface of the second fitting 2 close to the steering end shaft body 3 is formed with a connecting column extending axially downward and fixed, for example, in an interference fit with an inner ring of the bearing 5. The upper part of the second fitting 2 is mounted with the first fitting 7 by a bearing mounting flange 8. Specifically, a bearing 4 is coaxially fixed on the inner side of the bearing mounting flange 8, and the second fitting part 2 penetrates through the bearing 4 and is connected with the inner ring of the bearing 4 in an interference fit manner; the outer race of the bearing 4 is connected to a bearing mounting flange 8, for example by interference fit. The bearing mounting flange 8 and the flange flanging of the first fitting piece 7 are fixed together through a connecting piece. Thus, when the first fitting part 7 and the second fitting part 2 are decoupled, it can be ensured that the first fitting part 7 remains stationary while the second fitting part 2 rotates.
The motor 10 is located outside the first fitting member 7; the driving block 9 is coaxially fixed to an output shaft of the motor 10. As shown in fig. 2, the first mating member 7 has an opening formed in a side wall thereof, and the driving block 9 can be threadedly coupled to the moving member 6 in the first mating member 7 at the opening.
The axial direction of the output shaft of the electric motor 10 is parallel to the axial direction of the first fitting member 7 and the second fitting member 2. When the motor 10 rotates, the cylindrical structure rotates synchronously with the motor 10, and at the same time, the sleeve is driven to move axially along the first fitting member 7 and the second fitting member 2. When the sleeve moves to the upper end, the sleeve is separated from the second matching part 2, and the first matching part 7 and the second matching part 2 are decoupled; when the sleeve is moved to the lower end, the inside of the sleeve is splined with the second fitting 2 and the outside thereof is splined with the first fitting 7, the first fitting 7 being coupled with the second fitting 2.
Referring to fig. 3-6, the rotor 23 is fixedly mounted on the side of the bearing mounting flange 8 facing away from the flange by a connecting member 24, and in order to ensure that the rotor 23 remains stationary relative to the motor 10, the motor 10 is supported and fixedly supported on the outer side of the first mating member 7 by the motor 10, and can rotate synchronously with the first mating member 7.
Based on the decoupling device provided in the first aspect of the embodiment of the present invention, a second aspect of the embodiment of the present invention provides a steering system, which includes the decoupling device according to the first aspect of the embodiment of the present invention.
Referring to fig. 7, a third aspect of the present invention provides an automobile including the steering system according to the second aspect of the present invention, based on the steering system provided in the second aspect of the embodiment of the present invention.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. Including each of the specific features, are combined in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A decoupling device, comprising:
the electric decoupling component (100) comprises an electric driving piece which is connected with the steering wheel end shaft or the steering gear end shaft to synchronously rotate and is used for driving the steering wheel end shaft and the steering gear end shaft to be decoupled or coupled;
and a spiral cable (22) wound around the outer periphery of the steering wheel end shaft or the steering end shaft, the spiral cable (22) having an incoming end led out through a first lead portion that is stationary with respect to the electric drive member to be electrically connected to the electric drive member and an outgoing end led out through a second lead portion that is stationary with respect to the vehicle body (12) to be electrically connected to a power supply source of the electric drive member, the spiral cable (22) having a stretch margin that does not break when the steering wheel end shaft or the steering end shaft is rotated to a limit position.
2. The decoupling device of claim 1 wherein said electrical drive is configured to provide a driving force; the electrical decoupling component (100) further comprises:
a moving member (6), the moving member (6) being movable from a coupling position to a decoupling position or from the decoupling position to the coupling position to decouple or couple the steering wheel end shaft and the steering gear end shaft;
the transmission mechanism is used for transmitting the driving force provided by the electric driving piece to the moving piece so as to drive the moving piece to move from the coupling position to the decoupling position or from the decoupling position to the coupling position.
3. A decoupling device as claimed in claim 2, characterized in that the spiral cable (22) is wound on a rotor (23) arranged coaxially with the steering wheel end shaft or the steering gear end shaft, the rotor (23) being stationary relative to the electric drive, the first lead portion being a lead hole formed in the rotor (23); and/or the presence of a gas in the gas,
the electric driving part is a motor (10), the transmission mechanism comprises a driving block (9), the driving block (9) is connected with an output shaft of the motor (10) to synchronously rotate and is in threaded connection with the moving part (6), and the rotation of the output shaft is converted into translation of the moving part (6).
4. The decoupling assembly of claim 3 wherein said rotor includes an annular turntable and a bushing extending axially to one side from an inner peripheral portion of said annular turntable, said bushing being disposed outside said steering wheel end shaft or said steering gear end shaft, said helical cable (22) being wound around an outer periphery of said bushing, said lead hole being formed in said bushing.
5. The decoupling device of claim 4, wherein the rotor (23) is further covered with a stator (21), an annular space for accommodating the spiral cable (22) is formed between the stator (21) and the rotor (23), the stator (21) is stationary relative to the vehicle body (12), and the second lead portion is a lead hole formed in the stator (21).
6. The decoupling assembly of claim 2 wherein said steering wheel end shaft and said steering gear end shaft are coaxially disposed and one has a hollow structure with an axial portion thereof projecting into said hollow structure and an outer peripheral surface thereof radially spaced from an inner peripheral surface of said hollow structure to accommodate said moving member; an axial portion of the other has a first axial section and a second axial section, a radial spacing dimension between an outer peripheral surface of the first axial section and an inner peripheral surface of the hollow structure is smaller than a radial spacing dimension between an outer peripheral surface of the second axial section and the inner peripheral surface of the hollow structure; the moving member (6) is translatable along the axial direction of the steering wheel end shaft and the steering gear end shaft to decouple or couple the steering wheel end shaft and the steering gear end shaft; at the coupling position, the outer side wall of the moving member (6) is joined to the inner peripheral surface of the hollow structure, and the inner side wall is joined to the outer peripheral surface of the first axial section.
7. The uncoupling device according to claim 6, characterized in that the mobile element (6) is constantly engaged with the hollow structural spline and is splined to the first axial segment at a coupling position; and/or the presence of a gas in the gas,
the moving piece (6) is a sleeve which is coaxially arranged with the steering wheel end shaft and the steering gear end shaft; and/or the presence of a gas in the gas,
the other being axially rotatably supported within the hollow structure by a bearing (4); and/or the presence of a gas in the gas,
the electric driving part and the transmission mechanism are both positioned outside the hollow structure, and an opening is formed in the side wall of the hollow structure so that the transmission mechanism is connected with the moving part.
8. The decoupling device of claim 6, wherein the hollow structure is a hollow cylinder, one end of the hollow cylinder is open, a radially outward-expanded flange is formed at the open end, the bearing (4) is mounted in a bearing mounting flange (8), the bearing mounting flange (8) is coaxially fixed with the flange, the other one is arranged in the bearing (4) in a penetrating manner and fixed with an inner ring of the bearing (4), the rotor (23) is fixed on the side, facing away from the flange, of the bearing mounting flange (8), and the electric driving part is fixed on the hollow structure.
9. A steering system, characterized in that it comprises a decoupling device according to any one of claims 1-8.
10. A motor vehicle, characterized in that it comprises a steering system according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911023008.9A CN112706823B (en) | 2019-10-25 | 2019-10-25 | Decoupling device, steering system and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911023008.9A CN112706823B (en) | 2019-10-25 | 2019-10-25 | Decoupling device, steering system and car |
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| Publication Number | Publication Date |
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| CN112706823A true CN112706823A (en) | 2021-04-27 |
| CN112706823B CN112706823B (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911023008.9A Active CN112706823B (en) | 2019-10-25 | 2019-10-25 | Decoupling device, steering system and car |
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| CN (1) | CN112706823B (en) |
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| DE19954505A1 (en) * | 1999-11-11 | 2001-05-17 | Mercedes Benz Lenkungen Gmbh | Vehicle steering device has on steering column coupling device to couple steering wheel rotationally secured to input shaft when engaged whilst allowing restricted relative rotation of steering wheel when disengaged |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112706823B (en) | 2022-04-15 |
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