CN220009878U - Vehicle, steering system and steering transmission - Google Patents

Abstract

The utility model provides a vehicle, a steering system and a steering transmission device, wherein the steering transmission device is arranged between a steering mechanism and a steering executing mechanism. The steering gear includes a first shaft, a second shaft, and a homodromous drive assembly. The first end of the first shaft is connected to the operating mechanism, and the second end of the first shaft is connected to the homodromous transmission assembly. The first end of the second shaft is connected to the steering actuator, and the second end of the second shaft is connected to the same-direction transmission assembly. The axis of the second shaft is parallel to the axis of the first shaft and is spaced along the direction perpendicular to the axis, and the second shaft can be driven to rotate in the same direction through the same-direction transmission assembly when the first shaft rotates, so that the rotating torque is transmitted from the operating mechanism to the steering executing mechanism. The utility model has the effect of reducing the development cost of the vehicle with the changeable wheelbase.

Description

Vehicles, steering systems and steering transmissions

Technical field

The utility model generally relates to the technical field of vehicle steering, and more specifically to a vehicle, a steering system and a steering transmission device.

Background technique

At present, during the development process of the existing vehicle steering system, if the wheelbase of the vehicle is lengthened in a small area, the cowl will move backward, while the position of the steering gear remains unchanged, causing the intermediate shaft of the control mechanism to be in contact with the gear shaft of the steering gear. The angle between them becomes larger, which causes the steering torque of the control mechanism to fluctuate greatly, affecting the development of the vehicle.

Utility model content

A series of concepts in simplified form are introduced in the Summary section, which are further described in detail in the Detailed Description section. The utility model content part of the present utility model does not mean an attempt to define the key features and necessary technical features of the claimed technical solution, nor does it mean an attempt to determine the protection scope of the claimed technical solution.

In order to at least partially solve the above problems, the first aspect of the present invention provides a steering transmission device, which is disposed between the operating mechanism and the steering actuator and includes a first shaft, a second shaft and a co-directional transmission assembly; the first The first end of the shaft is connected to the operating mechanism, the second end of the first shaft is connected to the co-directional transmission assembly; the first end of the second shaft is connected to the steering actuator, and the second end of the second shaft is connected to the steering actuator. The second end is connected to the co-directional transmission component; the axis of the second shaft is parallel to the axis of the first shaft and spaced apart in a direction perpendicular to the axis. When the first shaft rotates, it can pass through the The co-directional transmission component drives the second shaft to rotate in the same direction to transmit the rotation torque from the operating mechanism to the steering actuator.

According to the steering transmission device of the first aspect of the present invention, the first shaft is connected to the operating mechanism, the second shaft is connected to the steering actuator, and the first shaft and the second shaft are connected through a co-directional transmission assembly, so that the driving of the operating mechanism can be The steering actuator is controlled such that the axis of the second shaft is parallel to the axis of the first shaft and spaced in a direction perpendicular to the axis such that the operating mechanism and the steering actuator are spaced apart in a direction perpendicular to the axis such that the designed position of the operating mechanism It can move rearward with the cowl and maintain the tilt angle of the control mechanism, which facilitates the development of a small range of vehicle wheelbase lengthening, avoids the need to redevelop the steering system, and saves development costs.

Optionally, the co-directional transmission assembly includes a first member, a second member and a third member. The first member is connected to the first shaft and rotates with the rotation of the first shaft. The second member Connected to the second shaft and rotating with the rotation of the second shaft, the third member is disposed between the first member and the second member, so that the first shaft and the The second axis rotates in the same direction.

Optionally, the first member is sleeved on the first shaft and is fixed to the first shaft, the second member is sleeved to the second shaft and is fixed to the second shaft, and the first member and The second member is in contact with the third member respectively, so that when the first member rotates, it drives the third member, and when the third member rotates, it drives the second member.

Optionally, the rotation axis of the third member is parallel to the first axis and the second axis.

Optionally, the first member, the second member and the third member are all gears, and the third member meshes with the first member and the second member respectively.

Optionally, the co-directional transmission assembly includes an odd number of third members located between the first member and the second member, adjacent third members are connected to each other, and the first member and the second member are respectively connected to the two third members arranged at the ends.

Optionally, it also includes a housing, the housing is provided with a first channel for accommodating the first shaft and a second channel for accommodating the second shaft, the centers of the first channel and the second channel are The shafts are parallel and spaced apart in a direction perpendicular to the central axis, and the first channel and the second channel communicate with each other in a direction perpendicular to the central axis to accommodate the co-directional transmission assembly.

Optionally, a first end cap is provided at the entrance of the first channel, and a through hole is provided in the first end cap for the first shaft to penetrate into the housing.

Optionally, the housing is provided with a first tapered surface, and the first end cap is provided with a second tapered surface. When the first end cap is installed to the housing, the first tapered surface The surface fits the second tapered surface.

Optionally, a first sealing cover is further included, the first sealing cover is sleeved to the first shaft, and the first sealing cover can rotate relative to the first shaft along the circumferential direction of the first shaft; A first sealing ring is provided around the through hole, and the first sealing cover can cover the first sealing ring to seal the through hole.

Optionally, the first sealing ring is provided with a first external thread, and the first sealing cover is provided with a first internal thread that matches the first external thread.

Optionally, it also includes an adjustment ring connected to the housing, the adjustment ring is sleeved to the steering actuator, and the adjustment ring is provided with a second internal thread that matches the steering actuator; An elastic pretensioner is provided between the adjustment ring and the steering actuator. The elastic pretensioner is used to press against the adjustment ring when the adjustment ring rotates relative to the steering actuator.

Optionally, the second channel is further provided with a third internal thread, and the adjustment ring is provided with a second external thread that matches the third internal thread.

Optionally, a mounting ring is provided in the second channel, and the mounting ring is provided with a fourth internal thread that matches the steering actuator.

Optionally, the adjustment ring includes a first ring and a second ring, the outer wall of the first ring protrudes from the outer wall of the second ring, and the second external thread is located on the outer wall of the second ring, And the mounting ring is used to limit the second ring along the axial direction of the second shaft.

Optionally, the inner wall of the first ring is spaced apart from the steering actuator, and the elastic pretensioner is sleeved on the steering actuator and is located between the first ring and the steering actuator. ; The first end of the elastic pretensioner is in contact with the steering actuator, and the second end of the elastic pretensioner is in contact with the second ring.

A second aspect of the utility model provides a steering system, including:

According to the aforementioned steering transmission device;

A control mechanism, the control mechanism includes a steering wheel, a steering column, an intermediate shaft and a universal joint, the universal joint is connected to the first shaft;

Steering actuator, the steering actuator is provided with a casing, the casing is connected to the casing, and the second shaft is connected to the input end of the steering actuator, and the output end of the steering actuator Connected to the wheel, the second shaft is used to drive the steering actuator to drive the wheel to steer.

The steering system according to the second aspect of the present invention can be suitable for the development of different vehicles with small wheelbase differences.

A third aspect of the present invention provides a vehicle, including the steering system according to the foregoing.

The vehicle according to the third aspect of the present invention has low development cost.

Description of the drawings

The following drawings of embodiments of the present invention are hereby included as part of the present invention for understanding the present invention. The drawings illustrate embodiments of the present invention and their descriptions to explain the principles of the present invention. In the attached picture,

Figure 1 is a schematic front view of a steering system according to a preferred embodiment of the present invention;

Figure 2 is a three-dimensional schematic diagram of the steering system in Figure 1, in which the steering transmission device is displayed in an exploded manner;

Figure 3 is an exploded schematic diagram of the steering transmission device in Figure 2; and

Figure 4 is a schematic cross-sectional view of the steering transmission device along the axis direction.

Explanation of reference signs

100: Control mechanism 101: Steering column

102: Intermediate shaft 103: Universal joint

110: Steering actuator 111: Housing

120: Housing 121: First channel

122: Second channel 123: First end cap

124: First sealing cover 125: First sealing ring

126: First tapered surface 127: Second tapered surface

128: Snap ring 129: Bearing

130: First axis 140: Second axis

150: Co-directional transmission assembly 151: First component

152: Second component 153: Third component

160: Adjustment ring 161: First ring

162: Second ring 163: Elastic pretensioner

170: Mounting ring 180: Steering gear

Detailed ways

In the following description, numerous specific details are given in order to provide a more thorough understanding of the invention. However, it will be apparent to one skilled in the art that embodiments of the invention may be practiced without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present invention, some technical features that are well known in the art are not described.

In this article, ordinal words such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a specific order, etc. Furthermore, for example, the term "first component" does not by itself imply the presence of a "second component" and the term "second component" does not by itself imply the presence of a "first component".

In this article, "upper", "lower", "front", "back", "left", "right", etc. are only used to express the relative positional relationship between related parts, but not to limit the absolute position of these related parts. .

In this article, "equal", "identical", etc. are not limitations in a strict mathematical and/or geometric sense, but also include errors that are understandable by those skilled in the art and allowed in manufacturing or use.

Unless otherwise stated, numerical ranges herein include not only the entire range within both endpoints, but also several subranges subsumed therein.

1 to 4 show a steering transmission device 180 according to the present invention, which is disposed between the operating mechanism 100 and the steering actuator 110 . The steering transmission device 180 includes a first shaft 130 , a second shaft 140 and a co-directional transmission assembly 150 . The first end of the first shaft 130 is connected to the operating mechanism 100 , and the second end of the first shaft 130 is connected to the co-directional transmission assembly 150 . The first end of the second shaft 140 is connected to the steering actuator 110 , and the second end of the second shaft 140 is connected to the co-directional transmission assembly 150 . The axis of the second shaft 140 is parallel to the axis of the first shaft 130 and is spaced apart in a direction perpendicular to the axis. When the first shaft 130 rotates, the second shaft 140 can be driven to rotate in the same direction through the co-directional transmission assembly 150 to transmit the rotation torque from the operating mechanism 100 to the steering actuator 110 .

According to the steering transmission device 180 of the present invention, the first shaft 130 is connected to the operating mechanism 100, the second shaft 140 is connected to the steering actuator 110, and the first shaft 130 and the second shaft 140 are connected through the co-directional transmission assembly 150, so that The driving of the operating mechanism 100 controls the steering actuator 110, and the axis of the second shaft 140 is parallel to the axis of the first shaft 130 and spaced apart in a direction perpendicular to the axis, so that the operating mechanism 100 and the steering actuator 110 move along a direction perpendicular to the axis. spaced in the direction, so that the designed position of the control mechanism 100 can be moved rearward along with the cowl, and the tilt angle of the control mechanism 100 can be maintained, thereby facilitating the development of vehicle wheelbase lengthening in a small range, avoiding the need to redevelop the steering system, and saving development cost.

Referring to FIGS. 2 to 4 , the co-directional transmission assembly 150 includes a first member 151 , a second member 152 and a third member 153 . The first member 151 is connected to the first shaft 130 and rotates with the rotation of the first shaft 130 , and the second member 152 is connected with the second shaft 140 and rotates with the rotation of the second shaft 140 . The third member 153 is disposed between the first member 151 and the second member 152 so that the rotation directions of the first shaft 130 and the second shaft 140 are the same.

Further, the first member 151 is sleeved on the first shaft 130 and fixed with the first shaft 130 , and the second member 152 is sleeved on the second shaft 140 and fixed with the second shaft 140 . The first member 151 and the second member 152 are respectively in contact with the third member 153, so that when the first member 151 rotates, it drives the third member 153, and when the third member 153 rotates, it drives the second member 152, so that the first shaft 130 It is transmission connected with the second shaft 140 .

Furthermore, the rotation axis of the third member 153 is parallel to the first shaft 130 and the second shaft 140 , which is beneficial to reducing the transmission loss between the first shaft 130 and the second shaft 140 . In detail, the first member 151, the second member 152 and the third member 153 are all gears, and the third member 153 meshes with the first member 151 and the second member 152 respectively. When the first shaft 130 rotates, the first member 151 rotates with the rotation of the first shaft 130. The first member 151 drives the second member 152 to rotate through the transmission of the third member 153, so that the torque of the first shaft 130 is transmitted. to the second axis 140.

As an alternative, the co-drive assembly 150 may be configured to include an odd number of third members 153 located between the first member 151 and the second member 152 . Adjacent third members 153 are connected to each other, and the first member 151 and the second member 152 are respectively connected to the two third members 153 arranged at the ends. Through this solution, the first shaft 130 and the second shaft 140 can also rotate in the same direction under the transmission of the co-directional transmission assembly 150 .

Referring to FIGS. 2 to 4 , the steering transmission device 180 according to the present invention further includes a housing 120 . The housing 120 is provided with a first channel 121 for accommodating the first shaft 130 and a second channel 122 for accommodating the second shaft 140 . The central axes of the first channel 121 and the second channel 122 are parallel and spaced apart in a direction perpendicular to the central axis. The first channel 121 and the second channel 122 are connected with each other in a direction perpendicular to the central axis to accommodate the co-directional transmission assembly 150 . In detail, the second channel 122 protrudes from the bottom of the housing 120, and the entrance of the first channel 121 is provided with a first end cover 123. The first end cover 123 is provided with a through hole for the first shaft 130 to pass through to the housing. Within body 120.

Referring to FIG. 4 , a bearing 129 is provided in the housing 120 , and the end of the first shaft 130 away from the operating mechanism 100 is passed through the bearing 129 to realize the rotational connection of the first shaft 130 to the housing 120 . A snap ring 128 is also provided in the housing 120 . The snap ring 128 is sleeved on the first shaft 130 to fix the first shaft 130 along the axial direction of the first shaft 130 .

Further, referring to FIG. 3 , the housing 120 is provided with a first tapered surface 126 , and the first end cover 123 is provided with a second tapered surface 127 . When the first end cap 123 is installed to the housing 120, the first tapered surface 126 and the second tapered surface 127 fit together, thereby enhancing the sealing performance of the beam housing 120 and conducive to preventing the lubricant used for the co-directional transmission assembly 150. (such as butter) leaks out of the housing 120.

Referring to FIG. 3 , the steering transmission device 180 according to the present invention further includes a first sealing cover 124 . The first sealing cover 124 is sleeved on the first shaft 130 , and the first sealing cover 124 can rotate relative to the first shaft 130 along the circumferential direction of the first shaft 130 . A first sealing ring 125 is provided around the through hole, and the first sealing cover 124 can cover the first sealing ring 125 to seal the through hole to further prevent lubricant from leaking out of the housing 120 . Further, the first sealing ring 125 is provided with a first external thread, and the first sealing cover 124 is provided with a first internal thread that matches the first external thread, so that the worker can easily connect the first sealing cover 124 to the first sealing ring 125 connect.

Specifically, the connection between the housing 120 and the housing 111 of the steering actuator 110 (described in detail later). Referring to Figures 3 and 4, the steering transmission device 180 according to the present invention also includes an adjustment ring 160 connected to the housing 120. The adjustment ring 160 is sleeved on the steering actuator 110. The adjustment ring 160 is provided with the steering actuator 110. Matching second internal thread. An elastic pretensioner 163 is provided between the adjustment ring 160 and the steering actuator 110. The elastic pretensioner 163 is used to press against the adjustment ring 160 when the adjustment ring 160 rotates relative to the steering actuator 110 (casing 111). When the housing 120 is installed, the housing 120 is connected to the adjusting ring 160, and the adjusting ring 160 rotates to a certain angle relative to the steering actuator 110, and the elastic pretensioner 163 presses against the adjusting ring 160, so that the housing 120 is at this angle. time to be stable.

Optionally, the elastic pretensioners 163 are configured such that the adjustment ring 160 can rotate at least 360°, and the elastic pretensioners 163 are all pressed against the adjustment ring 160, so that the housing 120 can be adjusted within 360° relative to the steering actuator 110. of all angles.

Referring to FIG. 4 , the second channel 122 is also provided with a third internal thread, and the adjustment ring 160 is provided with a second external thread that matches the third internal thread. A mounting ring 170 is provided in the second channel 122, and the mounting ring 170 is provided with a fourth internal thread that matches the steering actuator 110 (casing 111). When installing the housing 120, the housing 120 is connected to the adjusting ring 160 through the third internal thread in the second channel 122 and the second external thread of the adjusting ring 160. The staff rotates the housing 120 until the housing 120 is relative to the adjusting ring 160. The ring 160 is tightened to realize the connection between the housing 120 and the adjusting ring 160; during this process, the mounting ring 170 is tightened with the steering actuator 110 as the housing 120 rotates, thereby further strengthening the connection between the housing 120 and the steering actuator 110. Turn to the connection between actuators 110.

In detail, the adjustment ring 160 includes a first ring 161 and a second ring 162. The outer wall of the first ring 161 protrudes from the outer wall of the second ring 162. The second external thread is located on the outer wall of the second ring 162, and the mounting ring 170 Located on the side of the third internal thread away from the adjusting ring 160 . The first ring 161 protrudes from the outer wall of the second ring 162 to limit the threaded connection between the housing 120 and the first ring 161 . The arrangement of the mounting ring 170 limits the threaded connection between the adjusting ring 160 (second ring 162) and the second channel 122.

Further, the inner wall of the first ring 161 is spaced apart from the steering actuator 110 (the outer wall of the casing 111), and the elastic pretensioner 163 is sleeved on the steering actuator 110 (the outer wall of the casing 111) and is located on the first ring 161 and the steering actuator 110. The elastic pretensioner 163 can be selected as a pretension spring. The first end of the elastic pretensioner 163 is in contact with the steering actuator 110 (the protruding structure on the outer wall of the casing 111). The second end of the elastic pretensioner 163 is in contact with Connect to the second ring 162. When the adjusting ring 160 rotates relative to the steering actuator 110, the elastic pretensioners 163 are in a compressed state, so that the adjusting ring 160 is pressed tightly, so that the adjusting ring 160 rotates at multiple angles relative to the steering actuator 110 (machine). Shell 111) is stable.

The utility model also provides a steering system, including the steering transmission device 180, the operating mechanism 100 and the steering actuator 110 according to the aforementioned. The control mechanism 100 includes a steering wheel, a steering column 101 , an intermediate shaft 102 and a universal joint 103 . The universal joint 103 is connected to the first shaft 130 . The steering actuator 110 is provided with a casing 111 , the casing 120 is connected to the casing 111 , and the second shaft 140 is connected to the input end of the steering actuator 110 . The output end of the steering actuator 110 is connected to the wheel for causing the second shaft 140 to drive the steering actuator 110 to drive the wheel to steer. The steering system according to the present invention can be suitable for the development of different vehicles with small wheelbase differences.

In detail, referring to FIGS. 1 and 2 , both ends of the steering column 101 are respectively connected to the steering wheel and the intermediate shaft 102 , the intermediate shaft 102 is connected to the universal joint 103 , and the universal joint 103 is connected to the first shaft 130 . The housing 120 is connected to the casing 111 through the adjusting ring 160 , and the second shaft 140 is inserted into the casing 111 to be connected with the input end of the steering actuator 110 .

The utility model also provides a vehicle, which includes the steering system according to the foregoing, and has low development cost.

Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to the invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "arranged" when used herein may mean that one component is directly attached to another component or that one component is attached to another component through intermediaries. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is inapplicable in that other embodiment or otherwise stated.

The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of illustration and illustration, and are not intended to limit the present invention to the scope of the described embodiments. Those skilled in the art can understand that more variations and modifications can be made based on the teachings of the present invention, and these variations and modifications all fall within the scope of protection claimed by the present utility model.

Claims (18)

1. A steering transmission device, disposed between the operating mechanism and the steering actuator, characterized in that it includes a first shaft, a second shaft and a co-directional transmission assembly; the first end of the first shaft is connected to the Control mechanism, the second end of the first shaft is connected to the co-directional transmission assembly; the first end of the second shaft is connected to the steering actuator, and the second end of the second shaft is connected to the co-directional transmission assembly Assembly; the axis of the second shaft is parallel to the axis of the first shaft and spaced apart in a direction perpendicular to the axis. When the first shaft rotates, the second shaft can be driven by the co-directional transmission assembly. The shafts rotate in the same direction to transmit rotational torque from the operating mechanism to the steering actuator. 2. The steering transmission device according to claim 1, wherein the co-directional transmission assembly includes a first member, a second member and a third member, the first member is connected to the first shaft and is connected to the first shaft. The second member rotates with the rotation of the first shaft, the second member is connected to the second shaft and rotates with the rotation of the second shaft, and the third member is disposed between the first member and the second member. so that the rotation directions of the first shaft and the second shaft are the same. 3. The steering transmission device according to claim 2, wherein the first member is sleeved on the first shaft and fixed to the first shaft, and the second member is sleeved on the second shaft. And fixed with the second shaft, the first member and the second member are respectively in contact with the third member, so that when the first member rotates, the third member is driven, and the third member rotates when driving the second component. 4. The steering transmission device according to claim 3, wherein the rotation axis of the third member is parallel to the first axis and the second axis. 5. The steering transmission device according to claim 3, wherein the first member, the second member and the third member are all gears, and the third member is connected to the first member respectively. member and the second member. 6. The steering transmission device according to claim 2, wherein the co-directional transmission assembly includes an odd number of third members located between the first member and the second member, adjacent to the third member. The three members are connected to each other, and the first member and the second member are respectively connected to the two third members arranged at the ends. 7. The steering transmission device according to claim 1, further comprising a housing provided with a first channel for accommodating the first shaft and a second channel for accommodating the second shaft, The central axes of the first channel and the second channel are parallel and spaced apart in a direction perpendicular to the central axis, and the first channel and the second channel are connected to each other in a direction perpendicular to the central axis. To accommodate the co-directional transmission assembly. 8. The steering transmission device according to claim 7, wherein a first end cover is provided at the entrance of the first channel, and a through hole is provided in the first end cover for the first shaft to pass through. into the housing. 9. The steering transmission device according to claim 8, wherein the housing is provided with a first tapered surface, the first end cover is provided with a second tapered surface, and the first end cover is installed with When reaching the housing, the first tapered surface and the second tapered surface fit together. 10. The steering transmission device according to claim 8, further comprising a first sealing cover, the first sealing cover is sleeved to the first shaft, and the first sealing cover can be moved along the first shaft. The circumferential direction of the through hole rotates relative to the first axis; the through hole is provided with a first sealing ring circumferentially, and the first sealing cover can cover the first sealing ring to seal the through hole. 11. The steering transmission device according to claim 10, wherein the first sealing ring is provided with a first external thread, and the first sealing cover is provided with a first first sealing ring that matches the first external thread. internal thread. 12. The steering transmission device according to claim 7, further comprising an adjustment ring connected to the housing, the adjustment ring being sleeved on the steering actuator, and the adjustment ring being provided with a The second internal thread matched with the steering actuator; an elastic pretensioner is provided between the adjustment ring and the steering actuator, and the elastic pretensioner is used to adjust the adjustment ring relative to the steering The actuator is pressed against the adjusting ring when rotating. 13. The steering transmission device according to claim 12, wherein the second channel is further provided with a third internal thread, and the adjustment ring is provided with a second external thread that matches the third internal thread. thread. 14. The steering transmission device according to claim 13, wherein a mounting ring is provided in the second channel, and the mounting ring is provided with a fourth internal thread that matches the steering actuator. 15. The steering transmission device according to claim 14, wherein the adjustment ring includes a first ring and a second ring, the outer wall of the first ring protrudes from the outer wall of the second ring, and the The second external thread is located on the outer wall of the second ring, and the mounting ring is used to limit the second ring along the axial direction of the second shaft. 16. The steering transmission device according to claim 15, wherein the inner wall of the first ring is spaced apart from the steering actuator, and the elastic pretensioner is sleeved on the steering actuator and located at Between the first ring and the steering actuator; the first end of the elastic pretensioner is in contact with the steering actuator, and the second end of the elastic pretensioner is in contact with the second ring. 17. A steering system, characterized by comprising: The steering transmission device according to any one of claims 1 to 16; A control mechanism, the control mechanism includes a steering wheel, a steering column, an intermediate shaft and a universal joint, the universal joint is connected to the first shaft; Steering actuator, the steering actuator is provided with a casing, the casing is connected to the casing, and the second shaft is connected to the input end of the steering actuator, and the output end of the steering actuator Connected to the wheel, the second shaft is used to drive the steering actuator to drive the wheel to steer. 18. A vehicle comprising a steering system according to claim 17.