CN116985895B - Split type automobile steering assembly - Google Patents
Split type automobile steering assembly Download PDFInfo
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- CN116985895B CN116985895B CN202310942602.8A CN202310942602A CN116985895B CN 116985895 B CN116985895 B CN 116985895B CN 202310942602 A CN202310942602 A CN 202310942602A CN 116985895 B CN116985895 B CN 116985895B
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- steering
- push rod
- assembly
- ball
- shell
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- 239000000428 dust Substances 0.000 claims description 20
- 239000011324 bead Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
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- 238000005457 optimization Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
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- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- 230000002393 scratching effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0421—Electric motor acting on or near steering gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0846—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments
- B60R13/0853—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments specially adapted for movable parts, e.g. gears levers, pedals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/04—Steering gears mechanical of worm type
- B62D3/06—Steering gears mechanical of worm type with screw and nut
- B62D3/08—Steering gears mechanical of worm type with screw and nut using intermediate balls or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/20—Links, e.g. track rods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Power Steering Mechanism (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention provides a split type automobile steering assembly which comprises a frame, two steering knuckles, two steering gears and a driving device. The frame is provided with two connecting seats which are arranged symmetrically left and right; the two steering knuckles are arranged at the left side and the right side of the frame; the two steering gears are in one-to-one correspondence with the steering knuckles, one end of each steering gear is connected with the corresponding steering gear, and the other end of each steering gear is connected with the corresponding connecting seat on the corresponding side; the driving device is arranged on the steering gear to drive the steering knuckle to steer. The split type automobile steering assembly provided by the invention is provided with the pair of split type steering gears, and the two steering gears are respectively driven by the corresponding driving devices, so that the mechanical connection between the two steering gears is omitted, the space occupation of the steering assembly is reduced, the overall weight is reduced, and the optimization of the automobile structure is facilitated; the connection structure between the two steering gears is omitted, so that the two front wheels do not affect each other in steering.
Description
Technical Field
The invention belongs to the technical field of automobile steering, and particularly relates to a split type automobile steering assembly.
Background
Steering-by-wire technology is a new trend in the development of future automobile chassis technology. The operation intention of a driver and various parameter information in the running process of the automobile are acquired in real time through sensors distributed at all positions of the automobile and transmitted to the electronic control unit, the electronic control unit analyzes and processes the information to obtain proper control parameters, the proper control parameters are transmitted to each executing mechanism to control the automobile, and the dynamic property, the braking property, the control stability and the smoothness of the automobile are greatly improved.
The prior art steering gear 1000 ' has a structure that a housing of the steering gear 1000 ' is fixedly connected with a frame 2000 ', the steering gear 1000 ' spans the whole frame 2000 ', and after the steering gear 1000 ' is connected with a left side mounting seat and a right side mounting seat of the frame 2000 ', two ends of the steering gear 1000 ' are respectively connected with steering knuckles 3000 ' on the left side and the right side, and the following problems exist: 1) Since the left output shaft 1001 ' and the right output shaft 1002 ' of the steering gear 1000 ' are connected to each other through the middle driving structure 1003 ', the left output shaft 1001 ' and the right output shaft 1002 ' of the steering gear 1000 ' are affected with each other when the wheels are steering to jump, resulting in that the wheels on both sides cannot reach an ideal motion state; 2) Because the existing steering gear 1000 ' adopts a cross-type structural design, and the middle driving structure 1003 ' has larger volume and high energy consumption, the whole volume of the steering gear 1000 ' is large, the weight is large, and the lightweight design of a vehicle is not facilitated.
Disclosure of Invention
The embodiment of the invention provides a split type automobile steering assembly, which aims to solve the problems that in the prior art, steering gears are connected with steering knuckles on the left side and the right side to enable left wheels and right wheels to move simultaneously, the movement effect is not ideal, the size and the weight of the steering gears greatly influence the automobile structure arrangement, and the manufacturing cost is increased.
In order to achieve the above purpose, the invention adopts the following technical scheme:
there is provided a split automotive steering assembly comprising:
the frame is provided with two connecting seats which are arranged symmetrically left and right;
the two steering knuckles are arranged on the left side and the right side of the frame and correspond to the connecting seats on the corresponding sides respectively;
the two steering gears are in one-to-one correspondence with the steering knuckles, one end of each steering gear is connected with the corresponding steering knuckle, and the other end of each steering gear is connected with the corresponding connecting seat on the corresponding side; and
the driving device is arranged on the steering gear to drive the steering knuckle to steer.
In one possible implementation, the diverter includes:
the shell is a cylindrical member, the driving device is arranged in the shell, and the output end of the driving device rotates by taking the long shaft of the shell as an axis;
the first connecting assembly comprises a push rod and a first ball pin seat which are integrally connected, the push rod stretches into the shell and is in spiral rotation fit with the output end of the driving device, and the first ball pin seat is connected with the steering knuckle;
the dustproof assembly is sleeved on the periphery of the push rod, and two ends of the dustproof assembly are respectively connected with the push rod and the shell in a sealing way; and
and one end of the second connecting component is connected with the corresponding connecting seat, and the other end of the second connecting component is connected with one end of the shell, which is far away from the first connecting component.
In one possible implementation manner, the driving device specifically includes:
the driving motor is arranged in the shell;
the lead screw rotates by taking the long shaft of the shell as an axis, the lead screw is connected to the output part of the driving motor, and one end of the lead screw, which is close to the first connecting component, forms the output end; and
and the bearing is connected between the lead screw and the shell.
In one possible implementation, the push rod includes:
one end of the push rod main body is fixedly connected with the first ball pin seat, the other end of the push rod main body stretches into the shell, and the push rod main body is sleeved on the periphery of the screw rod;
the matching ring module is arranged at the extending end of the push rod main body, the matching ring module is sleeved on the periphery of the screw rod, a threaded ball groove is formed in the inner annular wall, the outer threads of the screw rod and the ball groove are enclosed to form a ball channel, a bead return pipe is arranged on the periphery of the matching ring module, and the bead return pipe is communicated with the ball channel to form a circulating channel structure;
the two ball nuts are respectively connected to the two shaft ends of the matching ring module; and
and a plurality of balls circularly roll in the channel structure.
In one possible implementation, the housing is connected with a control structure corresponding to the periphery of the driving motor, and the control structure comprises a power interface and a signal interface which are respectively electrically connected with the driving motor.
In one possible implementation manner, a limiting convex ring is arranged in the shell, the limiting convex ring divides the interior of the shell into an installation space and an assembly space, the driving motor is installed in the installation space, and the lead screw penetrates through the limiting convex ring and stretches into the assembly space;
a guide part is formed in the assembly space, and the side edge of the ball nut is in sliding fit with the guide part along the axis of the shell;
the assembly space is close to one end of the first ball pin seat is provided with a sliding sleeve, a sliding hole is formed in the sliding sleeve, and the push rod main body is arranged in the sliding hole in a sliding penetrating mode.
In one possible implementation, the two ends of the assembly space are respectively provided with a travel switch, the travel switch is electrically connected with the driving motor, and the travel switch can be in contact with the lower end of the ball nut.
In one possible implementation, the dust-proof assembly includes a flexible dust-proof cover, the dust-proof cover is sleeved on the periphery of the push rod, one end of the dust-proof cover, which is close to the housing, is fixed on the housing through a first clamp, and the other end of the dust-proof cover is fixed on one end of the push rod, which is far away from the housing, through a second clamp.
In one possible implementation, the second connection assembly includes a second ball socket, an outer periphery of the second ball socket forming a connection ring, the connection ring being sealingly connected to the housing, the second ball socket being connected to the corresponding connection socket.
In one possible implementation manner, the shell forms a connection convex ring towards one end of the connection ring, and the connection convex ring and the connection ring are mutually abutted and connected through fasteners penetrating through the connection convex ring and the connection ring in sequence.
Compared with the prior art, the split type automobile steering assembly provided by the invention has the following beneficial effects:
(1) The steering device is provided with a pair of split steering gears, the two steering gears are mutually independent and do not affect each other, the left wheel and the right wheel are not limited by the same driving structure, the rotation angle of each wheel can be automatically adjusted, the steering of the automobile can reach an ideal state, and the driving safety is improved;
(2) The steering gear is independently driven, the power of a single driving device is low, and a driving device with small volume can be selected, so that the cost is reduced; the driving device is relatively light, and the steering gears are mutually independent, so that the crossing type design of the traditional steering gear is avoided, the space occupation is reduced, and the lightweight design of a vehicle is facilitated;
(3) The single driving device has low power and low noise;
(4) The two steering gears are not mutually influenced, the pure rolling of the wheels can be realized when the automobile steers, the excessive rapid abrasion of the tires is avoided, the resultant force direction of the external force applied to the wheels is more uniform, and the over-bending gesture of the automobile body is smoother and more stable.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic structural view of a split type automobile steering assembly according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the assembly of a diverter and a frame as used in the prior art;
FIG. 3 is a schematic view of a steering gear according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a diverter employed in an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a driving device according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a first connection assembly according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a first connection assembly according to an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7A;
FIG. 9 is a schematic cross-sectional view of a housing employed in an embodiment of the present invention;
fig. 10 is a schematic diagram of an assembly of a push rod and a lead screw employed in an embodiment of the present invention.
Reference numerals illustrate:
1000. a diverter;
1. a housing; 11. a limit convex ring; 12. a guide part; 13. a sliding sleeve; 131. a slide hole; 14. a travel switch; 15. connecting convex rings;
2. a first connection assembly; 21. a push rod; 211. a push rod main body; 212. a mating ring module; 2121. a ball groove; 213. a bead return tube; 214. a ball nut; 215. a ball; 22. a first ball pin holder; 221. a first ball pin;
3. a dust-proof assembly; 31. a dust cover; 32. a first clip; 33. a second clip;
4. a second connection assembly; 41. a second ball pin holder; 411. a connecting ring; 412. a second ball pin;
5. a driving device; 51. a driving motor; 52. a screw rod; 53. a bearing;
6. a control structure; 61. a power interface; 62. a signal interface;
7. a fastener;
2000. a frame; 2001. a connecting seat;
3000. and a knuckle.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.
It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Furthermore, the meaning of "a plurality of", "a number" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 10, a split type steering assembly for a vehicle according to the present invention will now be described. The split automobile steering assembly includes a frame 2000, two knuckles 3000, two steerer 1000, and a drive 5. The frame 2000 has two symmetrically arranged connection seats 2001; the two knuckles 3000 are arranged on the left and right sides of the frame 2000 and respectively correspond to the connecting seats 2001 on the corresponding sides; two steering gears 1000 are in one-to-one correspondence with the steering knuckles 3000, one end of each steering gear 1000 is connected with the corresponding steering knuckle 3000, and the other end is connected with the corresponding connecting seat 2001; the driving device 5 is disposed on the steering gear 1000 to drive the steering knuckle 3000 to steer.
As shown in fig. 1, a conventional steering gear 1000 'is mounted on a frame 2000' in a crossing manner, the steering gear 1000 'has a left output shaft 1001' and a right output shaft 1002 ', the left output shaft 1001' and the right output shaft 1002 'are driven by a driving structure 1003', and one steering gear 1000 'controls rotation of left and right steering knuckles 3000', so that a conventional steering gear occupies a lot of space in crossing a front chassis of a nacelle.
Compared with the prior art, the split type automobile steering assembly provided by the embodiment has the following beneficial effects:
(1) The pair of split type steering gears 1000 are arranged, the two steering gears 1000 are mutually independent and do not affect each other, the left wheel and the right wheel are not limited by the same driving structure, the rotation angle of each wheel can be automatically adjusted, the steering of the automobile can reach an ideal state, and the driving safety is improved;
(2) The steering gear 1000 is independently driven, the power of a single driving device 5 is low, and the driving device 5 with small volume can be selected, so that the cost is reduced; the driving device 5 is relatively light, and the steering gears 1000 are mutually independent, so that the crossing design of the traditional steering gear 1000' is avoided, the space occupation is reduced, and the lightweight design of a vehicle is facilitated;
(3) The single driving device 5 has low power and generates little noise;
(4) The two steering gears 1000 are not mutually influenced, so that the pure rolling of wheels can be realized when the automobile steers, the excessive rapid abrasion of tires is avoided, the resultant force directions of the external force applied to the wheels are more uniform, and the over-bending gesture of the automobile body is smoother and more stable.
In some embodiments, referring to fig. 3, a diverter 1000 includes a housing 1, a first connection assembly 2, a dust assembly 3, and a second connection assembly 4. The shell 1 is a cylindrical member, the shell 1 is internally provided with a driving device 5, and the output end of the driving device 5 rotates by taking the long shaft of the shell 1 as an axis; the first connecting component 2 comprises a push rod 21 and a first ball pin seat 22 which are integrally connected, the push rod 21 stretches into the shell 1 and is in spiral running fit with the output end of the driving device 5, and the first ball pin seat 22 is connected with the knuckle 3000; the dustproof component 3 is sleeved on the periphery of the push rod 21, and two ends of the dustproof component are respectively connected with the push rod 21 and the shell 1 in a sealing way; one end of the second connecting component 4 is connected with the corresponding connecting seat 2001, and the other end is connected with one end of the shell 1 far away from the first connecting component 2.
In particular, the first pin boss 22 has a first pin 221 whose axis is arranged in the up-down direction, and the first pin 221 is connected to the knuckle 3000.
The steering gear 1000 that this embodiment provided is connected with drive arrangement 5, and first coupling assembling 2 and knuckle 3000 are connected, and second coupling assembling 4 and frame 2000 are connected, and drive arrangement 5's output can drive push rod 21 and do reciprocal rectilinear motion, and then drive corresponding knuckle 3000 motion, can satisfy current user demand, realizes the operation that single steering gear 1000 controlled single wheel to turn to for the rotation of two front wheels does not influence each other. The rotation angle of each wheel can be automatically adjusted, so that the steering of the automobile can reach an ideal state, and the driving safety is improved. The dustproof assembly 3 can prevent dust from entering the housing 1 from a gap between the push rod 21 and the housing 1, and prevent dust particles and the like from scratching the push rod 21 to affect the service life.
In some embodiments, referring to fig. 5, the driving device 5 specifically includes a driving motor 51, a screw 52, and a bearing 53. The driving motor 51 is provided in the housing 1; the lead screw 52 rotates around the long shaft of the shell 1 as an axis, the lead screw 52 is connected to the output part of the driving motor 51, and one end of the lead screw 52, which is close to the first connecting component 2, forms an output end; the bearing 53 is connected between the screw 52 and the housing 1.
The brushless motor is selected as the driving motor 51, and has high control accuracy and long service life. When the brushless motor is selected, the lead screw 52 penetrates the brushless motor, two bearings 53 are arranged, the two bearings 53 are respectively arranged on two sides of the driving motor 51, the inner ring of the bearing 53 is connected with the lead screw 52, and the outer ring of the bearing 53 is connected with the shell 1.
The driving device 5 provided by the embodiment has a simple structure and can stably provide power; the output shaft of the driving motor 51 is rotationally connected with the lead screw 52, so that the lead screw 52 can rotate along the axis of the lead screw, and the output end of the driving motor 51 is ensured to stably provide power; the bearing 53 supports the space where the driving motor 51 is located, so that the driving motor 51 can normally operate, the bearing 53 is further connected with the screw rod 52, a supporting point of the screw rod 52 is provided, and the screw rod 52 can normally rotate.
In some embodiments, referring to fig. 4, 6-8, the push rod 21 includes a push rod body 211, a mating ring module 212, two ball nuts 214, and a plurality of balls 215 and a first ball socket 22. One end of the push rod main body 211 is fixedly connected with the first ball pin seat 22, the other end of the push rod main body 211 stretches into the shell 1, and the push rod main body 211 is sleeved on the periphery of the screw rod 52; the matching ring module 212 is arranged at the extending end of the push rod main body 211, the matching ring module 212 is sleeved on the outer periphery of the screw rod 52, a threaded ball groove 2121 is formed on the inner annular wall, the outer threads of the screw rod 52 and the ball groove 2121 are enclosed to form a ball channel, a bead return pipe 213 is arranged on the outer periphery of the matching ring module 212, and the bead return pipe 213 is communicated with the ball channel to form a circulating channel structure; two ball nuts 214 are respectively connected to two shaft ends of the mating ring module 212; a plurality of balls 215 circulate within the channel structure.
In specific implementation, the external thread of the screw 52 and the ball groove 2121 cooperate to form a ball channel, the screw 52 rotates under the action of the driving motor 21, the ball 215 is arranged in the ball channel, the ball 215 moves along the ball channel under the pressure of the screw 52, the ball groove 2121 moves left and right under the pressure of the ball 215, and the push rod main body 211 reciprocates along the axis of the push rod main body under the rotation action of the screw 52. The screw 52, the ball groove 2121, and the balls 215 form a ball screw structure that converts the rotation of the screw 52 into the linear motion of the push rod body 211.
The balls 215 are provided in plural numbers and are sequentially arranged in the ball passage and the ball return tube 213.
In the first connection assembly 2 provided in this embodiment, the push rod main body 211, the balls 215 and the screw 52 cooperate to form a ball screw structure, so that the rotation and actuation of the screw 52 are converted into the linear motion of the push rod 21, and the push rod main body 211 is sleeved on the outer periphery of the screw 52 to avoid the linear motion of the push rod 21. The ball return pipe 213 is communicated with the ball channel and is matched with the ball channel to form a circulating rolling path, so that the balls 215 can circularly move in the rolling path, and further, the screw rod 52 is ensured to drive the push rod main body 211 to linearly move; the outer circumference of the ball nut 214 contacts the inner wall of the housing 1, guiding the push rod 21 to make a linear motion.
In some embodiments, referring to fig. 4, a control structure 6 is connected to the outer periphery of the housing 1 corresponding to the driving motor 51, and the control structure 6 includes a power interface 61 and a signal interface 62 electrically connected to the driving motor 51, respectively. The power interface 61 is electrically connected with a power supply, and the signal interface 62 is connected with the main controller to control the start of the driving motor 51.
In some embodiments, referring to fig. 9 and 10, a limiting convex ring 11 is provided in the interior of the housing 1, the limiting convex ring 11 divides the interior of the housing 1 into an installation space and an assembly space, the driving motor 51 is installed in the installation space, and the screw rod 52 penetrates through the limiting convex ring 11 and extends into the assembly space; a guide part 12 is formed in the assembly space, and the side edge of the ball nut 214 is in sliding fit with the guide part 12 along the axis of the shell 1; the assembly space is close to one end laminating of first ball pin seat 22 and is equipped with sliding sleeve 13, and sliding sleeve 13 has seted up slide hole 131, and push rod main part 211 slides and wears to locate slide hole 131.
In particular, the sliding sleeve 13 is made of modified polyoxymethylene, which has good lubricity and bearing property, and can reduce friction of the push rod 314, so that the sliding sleeve 333 can move more smoothly, and simultaneously has both limiting and sealing effects
The shell 1 provided by the embodiment has simple structure and low manufacturing difficulty; the limiting convex ring 11 plays a role of a bearing shoulder, limits the bearing 53, and ensures that the bearing 53 normally supports the formation of an installation space; the sliding hole 131 of the sliding sleeve 13 guides the push rod main body 211 to enter the assembly space, friction between the sliding sleeve and the push rod main body 211 is reduced, abrasion to the push rod main body 211 is reduced, the service life of the push rod 21 is prolonged, and cost is saved. The sliding sleeve 13 seals the gap between the push rod 21 and the shell 1, so that the sealing effect is improved; the cross section shape of the guide part 12 is matched with the shape of the matching ring module 212, so that the matching ring module 212 drives the push rod 21 to move along the extending direction of the guide part 12, and the push rod 21 is ensured not to rotate when doing linear motion.
In some embodiments, referring to fig. 9 and 10, the travel switch 14 is provided at both ends of the assembly space, respectively, the travel switch 14 is electrically connected to the driving motor 51, and the travel switch 14 can be in contact with the lower push rod 21 of the ball nut 214. The travel switches 14 are distributed at the two travel ends of the ball nut 214, when the push rod 21 moves linearly, the ball nut 214 moves along with the push rod 21, when the ball nut 214 touches the travel switch 14, the switch of the travel switch 14 is changed, so that the driving motor 51 is blocked, overload protection is performed on the formation of the ball nut 214, the screw rod 52 is prevented from continuing to rotate, the ball nut 214 is always located between the two travel switches 14, excessive steering of wheels caused by exceeding the travel of the push rod 21 is avoided, and the use safety of the travel switch 14 is improved due to the arrangement of the travel switch 14.
In some embodiments, referring to fig. 4, the dust assembly 3 includes a flexible dust cover 31, the dust cover 31 is sleeved on the periphery of the push rod 21, one end of the dust cover 31 close to the housing 1 is fixed on the housing 1 through a first clamp 32, and the other end is fixed on the end of the push rod 21 far from the housing 1 through a second clamp 33. The dust cover 31 protects the gap between the push rod 21 and the housing 1, prevents smoke from entering, and protects the moving environment of the push rod 21.
In specific implementation, the dust cover 31 has a plurality of folds in the axial direction, and the folds of the dust cover 31 enable the dust cover to stretch and retract along with the movement of the push rod 21, so that the push rod 21 is ensured to be normally operated.
In particular, the dust cap 31 is a cylindrical-like member, two ports of the dust cap 31 are one large and one small, a large port is sleeved on the housing 1, and a small port is sleeved on the push rod main body 211.
In particular, the dust cover 322 is a thermoplastic elastomer, and can also protect the push rod 21 and the lubricating oil in the housing 1 from flowing out.
In some embodiments, referring to fig. 3 and 4, the second connection assembly 4 includes a second ball socket 41, the outer circumference of the second ball socket 41 forms a connection ring 411, the connection ring 411 is in sealing connection with the housing 1, and the second ball socket 41 is connected with a corresponding connection socket 2001. The second ball socket 41 is connected to the housing 1 such that the housing 1 is connected to the frame 2000 and the connection ring 411 provides a mounting location such that the second ball socket 41 can be sealingly connected to the housing 1.
In the implementation process, conical surface fit is adopted between the first ball pin 221 and the knuckle 2, and between the second ball pin 412 and the left connecting seat 2001 or the right connecting seat 2002.
In some embodiments, referring to fig. 4 and 9, the housing 1 forms a connection collar 15 at an end facing the connection collar 411, and the connection collar 15 and the connection collar 411 abut against each other and are connected by a fastener 7 penetrating the connection collar 15 and the connection collar 411 in sequence. The connection convex ring 15 and the connection ring 411 are coaxially abutted, so that the tightness between the shell 1 and the second ball pin seat 41 is improved, and the contact area is increased.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A split automotive steering assembly, comprising:
the frame is provided with two connecting seats which are arranged symmetrically left and right;
the two steering knuckles are arranged on the left side and the right side of the frame and correspond to the connecting seats on the corresponding sides respectively;
the two steering gears are in one-to-one correspondence with the steering knuckles, one end of each steering gear is connected with the corresponding steering knuckle, and the other end of each steering gear is connected with the corresponding connecting seat on the corresponding side; and
the driving device is arranged on the steering gear to drive the steering knuckle to steer;
the diverter includes:
the shell is a cylindrical member, the driving device is arranged in the shell, and the output end of the driving device rotates by taking the long shaft of the shell as an axis;
the first connecting assembly comprises a push rod and a first ball pin seat which are integrally connected, the push rod stretches into the shell and is in spiral rotation fit with the output end of the driving device, and the first ball pin seat is connected with the steering knuckle;
the dustproof assembly is sleeved on the periphery of the push rod, and two ends of the dustproof assembly are respectively connected with the push rod and the shell in a sealing way; and
one end of the second connecting component is connected with the corresponding connecting seat, and the other end of the second connecting component is connected with one end of the shell far away from the first connecting component;
the driving device specifically comprises:
the driving motor is arranged in the shell;
the lead screw rotates by taking the long shaft of the shell as an axis, the lead screw is connected to the output part of the driving motor, and one end of the lead screw, which is close to the first connecting component, forms the output end; and
a bearing connected between the lead screw and the housing;
the push rod includes:
one end of the push rod main body is fixedly connected with the first ball pin seat, the other end of the push rod main body stretches into the shell, and the push rod main body is sleeved on the periphery of the screw rod;
the matching ring module is arranged at the extending end of the push rod main body, the matching ring module is sleeved on the periphery of the screw rod, a threaded ball groove is formed in the inner annular wall, the outer threads of the screw rod and the ball groove are enclosed to form a ball channel, a bead return pipe is arranged on the periphery of the matching ring module, and the bead return pipe is communicated with the ball channel to form a circulating channel structure;
the two ball nuts are respectively connected to the two shaft ends of the matching ring module; and
and a plurality of balls circularly roll in the channel structure.
2. The split car steering assembly of claim 1, wherein the housing is coupled to a control structure corresponding to an outer periphery of the drive motor, the control structure including a power interface and a signal interface electrically coupled to the drive motor, respectively.
3. The split type automobile steering assembly as claimed in claim 1, wherein a limiting convex ring is arranged in the shell, the limiting convex ring divides the interior of the shell into an installation space and an assembly space, the driving motor is installed in the installation space, and the lead screw penetrates through the limiting convex ring and stretches into the assembly space;
a guide part is formed in the assembly space, and the side edge of the ball nut is in sliding fit with the guide part along the axis of the shell;
the assembly space is close to one end of the first ball pin seat is provided with a sliding sleeve, a sliding hole is formed in the sliding sleeve, and the push rod main body is arranged in the sliding hole in a sliding penetrating mode.
4. A split car steering assembly as claimed in claim 3, wherein the two ends of the assembly space are provided with a travel switch, respectively, which is electrically connected with the driving motor, and which is contactable with the lower end of the ball nut.
5. The split car steering assembly of claim 1, wherein the dust assembly comprises a flexible dust cover, the dust cover is sleeved on the periphery of the push rod, one end of the dust cover, which is close to the housing, is fixed on the housing through a first clamp, and the other end of the dust cover, which is far away from the housing, is fixed on the end of the push rod through a second clamp.
6. The split car steering assembly as set forth in claim 1, wherein said second connection member comprises a second ball socket, a periphery of said second ball socket forming a connection ring, said connection ring being sealingly connected to said housing, said second ball socket being connected to a corresponding said connection socket.
7. The split car steering assembly as claimed in claim 6, wherein the housing forms a connection collar toward one end of the connection collar, the connection collar and the connection collar abutting each other and being connected by fasteners sequentially penetrating the connection collar and the connection collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310942602.8A CN116985895B (en) | 2023-07-28 | 2023-07-28 | Split type automobile steering assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310942602.8A CN116985895B (en) | 2023-07-28 | 2023-07-28 | Split type automobile steering assembly |
Publications (2)
| Publication Number | Publication Date |
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| CN116985895A CN116985895A (en) | 2023-11-03 |
| CN116985895B true CN116985895B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310942602.8A Active CN116985895B (en) | 2023-07-28 | 2023-07-28 | Split type automobile steering assembly |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003252231A (en) * | 2002-02-28 | 2003-09-10 | Aisin Seiki Co Ltd | Rear wheel steering device for vehicle |
| KR20100107109A (en) * | 2009-03-25 | 2010-10-05 | 한양대학교 산학협력단 | Left-right independent front steering system |
| KR20190047883A (en) * | 2017-10-30 | 2019-05-09 | 주식회사 만도 | Steer-By-Wire Type Steering Apparatus |
| KR20190104672A (en) * | 2018-03-02 | 2019-09-11 | 주식회사 만도 | Steer-By-Wire Type Steering Apparatus |
| CN216034633U (en) * | 2021-11-18 | 2022-03-15 | 浙江吉利控股集团有限公司 | Steer-by-wire system and vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171472B (en) * | 2019-07-11 | 2023-07-07 | 吉林大学 | Dual-mode rear wheel active steering device |
-
2023
- 2023-07-28 CN CN202310942602.8A patent/CN116985895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003252231A (en) * | 2002-02-28 | 2003-09-10 | Aisin Seiki Co Ltd | Rear wheel steering device for vehicle |
| KR20100107109A (en) * | 2009-03-25 | 2010-10-05 | 한양대학교 산학협력단 | Left-right independent front steering system |
| KR20190047883A (en) * | 2017-10-30 | 2019-05-09 | 주식회사 만도 | Steer-By-Wire Type Steering Apparatus |
| KR20190104672A (en) * | 2018-03-02 | 2019-09-11 | 주식회사 만도 | Steer-By-Wire Type Steering Apparatus |
| CN216034633U (en) * | 2021-11-18 | 2022-03-15 | 浙江吉利控股集团有限公司 | Steer-by-wire system and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116985895A (en) | 2023-11-03 |
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