CN211494208U - Steering column rotation limiting mechanism, steering system and vehicle - Google Patents
Steering column rotation limiting mechanism, steering system and vehicle Download PDFInfo
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- CN211494208U CN211494208U CN201921691045.2U CN201921691045U CN211494208U CN 211494208 U CN211494208 U CN 211494208U CN 201921691045 U CN201921691045 U CN 201921691045U CN 211494208 U CN211494208 U CN 211494208U
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Abstract
The utility model relates to a rotatory stop gear of steering column, a steering system and vehicle, this rotatory stop gear of steering column includes barrel casing and pipe box, the barrel casing is fixed and can axial displacement for steering column circumference, the tip of barrel casing near-end is provided with first axial bulge, the tip of barrel casing distal end is provided with second axial bulge, the pipe box cover is established and is fixed in the steering shaft, the barrel casing is established on the pipe box with screw-thread fit, the rotatory stop gear of steering column includes the first spacing portion that sets up corresponding to the first end of pipe box and the spacing portion of second that sets up corresponding to the second end of pipe box, the radial protrusion of first spacing portion and second is in the surface of pipe box, first spacing portion and the spacing portion of second backstop first axial bulge and second axial bulge respectively in circumference. Through above-mentioned technical scheme, the rotatory stop gear of steering column that this disclosure provided can effectively avoid the dead phenomenon of steering spindle extreme position card and the condition emergence of reversal torque increase.
Description
Technical Field
The disclosure relates to the technical field of steering systems, in particular to a steering column rotation limiting mechanism, a steering system and a vehicle.
Background
The steering system is one of important systems of an automobile chassis, and has the function of converting the moment acted on a steering wheel by a driver into the movement of wheels through a steering column, an intermediate shaft and other components so as to achieve the aim of steering the vehicle.
The steering column serves as an important component of the steering system, and its main function is to transmit the steering wheel torque to the intermediate shaft. The limiting function of the conventional steering system is usually realized by arranging limiting pieces at the upper end and the lower end of a motion axis of a steering shaft, and because the limiting surfaces of the limiting pieces are arranged on the motion axis, the steering shaft is blocked at a limit position or the reversing torque is increased, so that the driving safety of a vehicle is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The purpose of the present disclosure is to provide a steering column rotation limiting mechanism, a steering system and a vehicle, wherein the rotation limiting mechanism can effectively avoid the occurrence of the phenomenon of the steering shaft extreme position being stuck and the situation of the steering shaft reversing torque being increased.
In order to achieve the above object, the present disclosure provides a steering column rotation limiting mechanism, which includes a sleeve and a tube housing,
the sleeve is circumferentially fixed and axially movable relative to the steering column, the sleeve has a proximal end and a distal end opposite to each other in the axial direction, a first axial projection is provided at the end of the proximal end, a second axial projection is provided at the end of the distal end,
the pipe sleeve is sleeved and fixed on the steering shaft, the pipe sleeve is provided with a first end and a second end along the axial direction, an external thread extending between the first end and the second end is formed on the outer surface of the pipe sleeve, the sleeve is sleeved on the pipe sleeve in a threaded fit manner,
the steering column rotation limiting mechanism comprises a first limiting part and a second limiting part, the first limiting part is arranged corresponding to the first end, the second limiting part is arranged corresponding to the second end, the first limiting part and the second limiting part radially protrude out of the outer surface of the pipe sleeve, and the first limiting part stops the first axial protrusion in the circumferential direction so as to limit the barrel sleeve to rotate relative to the pipe sleeve continuously along a first rotation direction; the second limiting part stops the second axial protrusion in the circumferential direction to limit the barrel sleeve to rotate relative to the barrel sleeve continuously along a second rotation direction; wherein the first rotational direction is opposite the second rotational direction.
Optionally, the first limiting part is formed at the first end of the pipe sleeve;
and/or the presence of a gas in the gas,
the steering column rotation limiting mechanism comprises a limiting ring, the limiting ring is detachably connected to the second end and fixed relative to the pipe sleeve, the second limiting portion is formed on the limiting ring, and the second limiting portion protrudes out of the outer surface of the limiting ring in the radial direction.
Optionally, a guiding structure is disposed between the sleeve and the steering column, and the guiding structure guides the sleeve to move relative to the steering column along the axial direction and limits the sleeve to rotate relative to the steering column along the circumferential direction.
Optionally, the steering column rotation limiting mechanism includes a guide member disposed between the sleeve and the steering column and fixed to the steering column, the guide structure is disposed between the guide member and the sleeve, and includes a guide rail and a sliding groove extending in the axial direction and capable of being fitted with each other, one of the guide rail and the sliding groove is disposed on an outer surface of the sleeve, and the other of the guide rail and the sliding groove is disposed on a surface of the guide member facing the sleeve.
Optionally, the guide is configured as a cylinder with its inner surface facing the cartridge.
Optionally, the outer surface of the guide member is configured with press-fit splines for an interference fit in the steering column.
Optionally, the sleeve and the stop collar are both interference fit on the steering shaft.
Optionally, a positioning structure is disposed between the first end of the pipe sleeve and the stop collar to constrain the relative positions of the first stop portion and the second stop portion when the pipe sleeve and the stop collar are connected together.
Optionally, the positioning structure includes at least one pair of a groove and a protrusion, which are engaged with each other, one of the groove and the protrusion is disposed on an end surface of the first end of the pipe sleeve, and the other of the groove and the protrusion is disposed on an end surface of the stop collar opposite to the first end.
On the basis of the scheme, the disclosure further provides a steering system, and the steering system comprises the steering column rotation limiting mechanism.
On the basis of the scheme, the disclosure further provides a vehicle, and the vehicle is provided with the steering system.
Through the technical scheme, the sleeve in the steering column rotation limiting mechanism provided by the disclosure is circumferentially fixed and can axially move relative to the steering column, the sleeve is sleeved and fixed on the steering shaft, namely the sleeve is circumferentially and axially fixed relative to the steering shaft, the sleeve is sleeved on the sleeve in a threaded fit manner, when the steering shaft rotates, the sleeve rotates on the sleeve and axially moves relative to the steering column, the first limiting part arranged corresponding to the first end of the sleeve and the second limiting part arranged corresponding to the second end of the sleeve are respectively used for limiting the continuous rotation of the sleeve in the first rotating direction and the second rotating direction relative to the sleeve, so that the rotation and the limiting of the steering shaft in the steering column can be realized, in addition, as the first limiting part is correspondingly arranged on the first end of the sleeve and the second limiting part is correspondingly arranged on the second end of the sleeve, the steering shaft limit blocking phenomenon can be avoided, and does not cause an increase in the steering shaft reverse torque.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic structural view of a steering column rotation limiting mechanism provided in accordance with an embodiment of the present disclosure;
FIG. 2 is an exploded view of a steering column rotation limiting mechanism provided in accordance with an embodiment of the present disclosure;
FIG. 3 is a perspective view of a guide in a steering column rotation limiting mechanism provided in accordance with an embodiment of the present disclosure;
FIG. 4 is a perspective view of a sleeve in a steering column rotation limiting mechanism provided in accordance with an embodiment of the present disclosure;
FIG. 5 is a perspective view of a sleeve in a steering column rotation limiting mechanism provided in accordance with an embodiment of the present disclosure;
fig. 6 is a perspective view of a stop collar in a steering column rotation stop mechanism provided according to an embodiment of the present disclosure.
Description of the reference numerals
1-steering column, 21-guide piece, 211-press-fitting spline, 212-guide rail, 22-sleeve, 221-internal thread, 222-sliding groove, 223-first axial bulge, 224-second axial bulge, 23-sleeve, 231-external thread, 232-first limiting part, 233-groove, 24-limiting ring, 241-second limiting part, 242-bulge and 3-steering shaft.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the use of directional terms such as "inner and outer" means inner and outer with respect to the profile of the component itself, unless otherwise specified; the use of the terms first, second, etc. are intended to distinguish one element from another without order or importance. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.
According to the embodiment of the present disclosure, there is provided a steering column rotation limiting mechanism, the steering column rotation limiting mechanism includes a sleeve 22 and a sleeve 23, the sleeve 22 is circumferentially fixed and axially movable with respect to a steering column 1, the sleeve 22 has a proximal end and a distal end opposite to each other in an axial direction, an end of the proximal end is provided with a first axial protrusion 223, an end of the distal end is provided with a second axial protrusion 224, the sleeve 23 is sleeved and fixed on a steering shaft 3, the sleeve 23 has a first end and a second end in the axial direction, an external thread 231 extending between the first end and the second end is formed on an outer surface of the sleeve 23, the sleeve 22 is sleeved on the sleeve 23 in a threaded fit manner, the steering column rotation limiting mechanism includes a first limiting portion 232 provided corresponding to the first end and a second limiting portion 241 provided corresponding to the second end, the first limiting portion 232 and the second limiting portion 241 radially protrude from the outer surface of the sleeve 23, the first limiting part 232 stops the first axial protrusion 223 in the circumferential direction to limit the barrel sleeve 22 to rotate relative to the barrel sleeve 23 in the first rotating direction; the second limiting portion 241 stops the second axial protrusion 224 in the circumferential direction to limit the barrel sleeve 22 to rotate relative to the barrel sleeve 23 in the second rotation direction; wherein the first rotational direction is opposite to the second rotational direction.
Through the technical scheme, the sleeve 22 in the steering column rotation limiting mechanism provided by the disclosure is circumferentially fixed and can axially move relative to the steering column 1, the sleeve 23 is sleeved and fixed on the steering shaft 3, namely, the sleeve 23 is circumferentially and axially fixed relative to the steering shaft 3, the sleeve 22 is sleeved on the sleeve 23 in a threaded fit manner, when the steering shaft 3 rotates, the sleeve 22 rotates on the sleeve 23 and axially moves relative to the steering column 1, and the first limiting portion 232 arranged corresponding to the first end of the sleeve 23 and the second limiting portion 241 arranged corresponding to the second end of the sleeve 23 are respectively used for limiting the sleeve 22 to continuously rotate relative to the sleeve 23 in the first rotation direction and the second rotation direction, so that the rotation and the limitation of the steering shaft 3 in the steering column 1 can be realized. In addition, since the first stopper 232 is correspondingly provided at the first end of the sleeve 23 and the second stopper 241 is correspondingly provided at the second end of the sleeve 23, the occurrence of the locking phenomenon of the limit position of the steering shaft 3 can be avoided, and the increase of the reverse torque of the steering shaft 3 is not caused.
In particular embodiments provided by the present disclosure, the first and second limiting portions may each be configured in any suitable manner.
As for the first stopper portion, it is possible that, as shown in fig. 2 and 5, the first stopper portion 232 may be formed at a first end of the socket 23, and the second stopper portion 241 is correspondingly provided at a second end of the socket 23. It is also possible that the first stop portion 232 is formed on an additional component, which may be configured in the manner of the stop collar 24 described below.
As for the second limit portion, it is possible that the second limit portion 241 is formed at the steering shaft 3, and the second end of the sleeve 23 is removably abutted against the second limit portion 241. It is also possible that the second stopper portion 241 is formed on an additional component, for example, as shown in fig. 2 and 6, the steering column rotation limiting mechanism may include a stopper ring 24, the stopper ring 24 being detachably coupled to the second end and fixed with respect to the sleeve 23, the second stopper portion 241 being formed on the stopper ring 24, the second stopper portion 241 radially protruding from an outer surface of the stopper ring 24, the first stopper portion 232 being correspondingly provided at the first end of the sleeve 23, for example, the first stopper portion 232 being configured as a stopper ring of the same structure as the second stopper portion 241, the stopper ring being detachably coupled to the first end and fixed with respect to the sleeve 23, the first stopper portion 232 being formed on the stopper ring, and the first stopper portion 232 radially protruding from an outer surface of the stopper ring.
As an example, as shown in fig. 2, 5 and 6, the first stopper 232 may be formed at the first end of the tube housing 23, the second stopper 241 may be formed on the stopper ring 24, and the second stopper 241 may radially protrude from the outer surface of the stopper ring 24.
In the specific embodiment provided by the present disclosure, a guiding structure may be provided between the sleeve 22 and the steering column 1, and the guiding structure can guide the sleeve 22 to move relative to the steering column 1 in the axial direction and can limit the sleeve 22 to rotate relative to the steering column 1 in the circumferential direction.
In the specific implementation mode that this disclosure provided, steering column rotation limiting mechanism can include guide 21, this guide 21 sets up between barrel casing 22 and steering column 1 and be fixed in steering column 1 to can avoid setting up the guide structure on the body of steering column 1, can avoid increasing the processing and the assembly degree of difficulty of steering column 1 on the one hand like this, on the other hand can also guarantee the intensity of steering column 1, avoid leading to the reduction of the intensity of steering column 1 because of set up the guide structure on steering column 1. The guide structure may be disposed between the guide 21 and the cartridge 22, and may include a guide rail 212 and a slide groove 222 extending in the axial direction and capable of cooperating with each other, one of the guide rail 212 and the slide groove 222 may be disposed on an outer surface of the cartridge 22, and the other of the guide rail 212 and the slide groove 222 may be disposed on a surface of the guide 21 facing the cartridge 22. As shown in fig. 2 to 4, the present disclosure is exemplarily described by providing the sliding groove 222 on the outer surface of the sleeve 22, and providing the guide rail 212 on the surface of the guide 21 facing the sleeve 22.
In the specific embodiments provided by the present disclosure, the guide 21 may be configured in any suitable manner. Alternatively, as shown in fig. 2 to 4, the guide member 21 is configured in a cylindrical shape with its inner surface facing the sleeve 22, which can be advantageous for assembling the steering column 1 on the one hand, and can facilitate the arrangement of a plurality of pairs of guide structures for obtaining stable and reliable guiding of the sleeve 22 for smooth axial movement on the other hand. In other embodiments of the present disclosure, the guiding element 21 may have other configurations, and by contrast, the present disclosure is not limited in any way.
Wherein the guide 21 and the steering column 1 may be arranged in any suitable manner to achieve a connection therebetween. Alternatively, as shown in fig. 1, the outer surface of the guide member 21 may be configured with press-fit splines 211 to be interference-fitted in the steering column 1, and the interference-fitting of the guide member 21 in the steering column 1 via the press-fit splines 211 on the outer surface of the guide member may keep the guide member 21 and the steering column 1 relatively fixed, and avoid the relative position between the guide member 21 and the steering column 1 from being changed, thereby preventing the sleeve 22 from being axially moved. In other embodiments of the present disclosure, other configurations between the guide member 21 and the steering column 1 may be provided, such as bonding, welding, etc., for comparison, and the present disclosure is not limited in any way.
In the embodiment provided by the present disclosure, as shown in fig. 1, both the tube housing 23 and the limit ring 24 may be interference-fitted on the steering shaft 3, so that the tube housing 23 and the limit ring 24 are fixed together with respect to the steering shaft 3 in both circumferential and axial directions, and the internal thread 221 on the sleeve housing 22 is fitted with the external thread 231 of the connection tube housing 23, thereby enabling to ensure that the sleeve housing 22 rotates on the tube housing 23 and moves axially with respect to the steering column 1 when the steering shaft 3 rotates.
In the specific embodiment provided by the present disclosure, a positioning structure may be disposed between the first end of the pipe sleeve 23 and the limiting ring 24 to constrain the relative positions of the first limiting portion 232 and the second limiting portion 241 when the pipe sleeve 23 and the limiting ring 24 are connected together.
In the specific embodiments provided by the present disclosure, the positioning structure may be configured in any suitable manner. Alternatively, the positioning structure includes at least one pair of a groove 233 and a protrusion 242 that are fitted to each other, one of the groove 233 and the protrusion 242 is provided on an end surface of the first end of the tube housing 23, and the other of the groove 233 and the protrusion 242 is provided on an end surface of the retainer ring 24 opposite to the first end. As shown in fig. 1, 2, 5 and 6, the groove 233 is disposed on an end surface of the first end of the pipe sleeve 23, and the protrusion 242 is disposed on an end surface of the limiting ring 24 opposite to the first end, wherein, in order to ensure reliability of the positioning structure for restraining the relative position of the first limiting portion 232 and the second limiting portion 241, the positioning structure is configured to include two pairs of grooves 233 and protrusions 242 which are matched with each other. In other embodiments of the present disclosure, the positioning structure may also be configured in other ways, such as a snap and a slot that are matched with each other, for comparison, the present disclosure is not limited in any way.
On the basis of the scheme, the disclosure further provides a steering system, and the steering system comprises the steering column rotation limiting mechanism.
On the basis of the scheme, the disclosure further provides a vehicle, and the vehicle is provided with the steering system.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (11)
1. A steering column rotation limiting mechanism is characterized by comprising a sleeve (22) and a sleeve (23),
the sleeve (22) is fixed in the circumferential direction and can move axially relative to the steering column (1), the sleeve (22) is provided with a near end and a far end which are opposite to each other along the axial direction, the end part of the near end is provided with a first axial bulge (223), the end part of the far end is provided with a second axial bulge (224),
the pipe sleeve (23) is sleeved and fixed on the steering shaft (3), the pipe sleeve (23) is provided with a first end and a second end along the axial direction, an external thread (231) extending between the first end and the second end is formed on the outer surface of the pipe sleeve (23), the barrel sleeve (22) is sleeved on the pipe sleeve (23) in a threaded fit manner,
the steering column rotation limiting mechanism comprises a first limiting part (232) and a second limiting part (241), the first limiting part (232) and the second limiting part (241) are arranged corresponding to the first end, the first limiting part (232) and the second limiting part (241) protrude out of the outer surface of the pipe sleeve (23) in the radial direction, the first limiting part (232) stops the first axial protrusion (223) in the circumferential direction so as to limit the barrel sleeve (22) to rotate relative to the pipe sleeve (23) continuously in the first rotation direction; the second limiting part (241) stops the second axial protrusion (224) in the circumferential direction to limit the barrel sleeve (22) to rotate relative to the pipe sleeve (23) in a second rotating direction; wherein the first rotational direction is opposite the second rotational direction.
2. The steering column rotation limitation mechanism according to claim 1, wherein the first limitation portion (232) is formed at the first end of the tube sleeve (23);
and/or the presence of a gas in the gas,
the steering column rotation limiting mechanism comprises a limiting ring (24), the limiting ring (24) is detachably connected to the second end and fixed relative to the pipe sleeve (23), the second limiting portion (241) is formed on the limiting ring (24), and the second limiting portion (241) protrudes out of the outer surface of the limiting ring (24) in the radial direction.
3. The steering column rotation limiting mechanism according to claim 1, wherein a guide structure is provided between the sleeve (22) and the steering column (1), the guide structure guiding the sleeve (22) to move relative to the steering column (1) in an axial direction and limiting the sleeve (22) to rotate relative to the steering column (1) in a circumferential direction.
4. The steering column rotation limit mechanism according to claim 3, characterized in that the steering column rotation limit mechanism includes a guide member (21), the guide member (21) being provided between the sleeve (22) and the steering column (1) and fixed to the steering column (1), the guide structure being provided between the guide member (21) and the sleeve (22) and including a guide rail (212) and a slide groove (222) extending in the axial direction and capable of fitting with each other, one of the guide rail (212) and the slide groove (222) being provided to an outer surface of the sleeve (22), and the other of the guide rail (212) and the slide groove (222) being provided to a surface of the guide member (21) facing the sleeve (22).
5. Steering column rotation limitation mechanism according to claim 4, characterized in that the guide (21) is configured as a cylinder with its inner surface facing the sleeve (22).
6. A steering column rotation limitation mechanism according to claim 5, wherein the outer surface of the guide member (21) is configured with press-fit splines (211) for an interference fit in the steering column (1).
7. Steering column rotation limitation mechanism according to claim 2, characterized in that the sleeve (23) and the limiting ring (24) are both interference fitted on the steering shaft (3).
8. The steering column rotation limiting mechanism according to claim 7, wherein a positioning structure is provided between the first end of the tube sleeve (23) and the limiting ring (24) to restrain the relative positions of the first limiting portion (232) and the second limiting portion (241) when the tube sleeve (23) and the limiting ring (24) are coupled together.
9. The steering column rotation limiting mechanism according to claim 8, wherein the positioning structure comprises at least one pair of a groove (233) and a protrusion (242) that are fitted to each other, one of the groove (233) and the protrusion (242) is provided on an end surface of the first end of the sleeve (23), and the other of the groove (233) and the protrusion (242) is provided on an end surface of the retainer ring (24) opposite to the first end.
10. A steering system, characterized in that it comprises a steering column rotation limiting mechanism according to any one of claims 1 to 9.
11. A vehicle characterized in that the vehicle is provided with a steering system as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691045.2U CN211494208U (en) | 2019-09-30 | 2019-09-30 | Steering column rotation limiting mechanism, steering system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691045.2U CN211494208U (en) | 2019-09-30 | 2019-09-30 | Steering column rotation limiting mechanism, steering system and vehicle |
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| Publication Number | Publication Date |
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| CN211494208U true CN211494208U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921691045.2U Active CN211494208U (en) | 2019-09-30 | 2019-09-30 | Steering column rotation limiting mechanism, steering system and vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112429073A (en) * | 2020-11-27 | 2021-03-02 | 东风柳州汽车有限公司 | Steering column assembly |
| CN114684247A (en) * | 2020-12-30 | 2022-07-01 | 比亚迪股份有限公司 | Corner limiting mechanism, vehicle steering system with same and vehicle |
| CN114932942A (en) * | 2022-06-24 | 2022-08-23 | 小米汽车科技有限公司 | Limiting device, steer-by-wire system and vehicle |
-
2019
- 2019-09-30 CN CN201921691045.2U patent/CN211494208U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112429073A (en) * | 2020-11-27 | 2021-03-02 | 东风柳州汽车有限公司 | Steering column assembly |
| CN112429073B (en) * | 2020-11-27 | 2022-06-07 | 东风柳州汽车有限公司 | Steering column assembly |
| CN114684247A (en) * | 2020-12-30 | 2022-07-01 | 比亚迪股份有限公司 | Corner limiting mechanism, vehicle steering system with same and vehicle |
| WO2022143804A1 (en) * | 2020-12-30 | 2022-07-07 | 比亚迪股份有限公司 | Steering angle limiting mechanism, and vehicle steering system and vehicle having same |
| CN114684247B (en) * | 2020-12-30 | 2023-09-05 | 比亚迪股份有限公司 | Corner limiting mechanism, vehicle steering system with same and vehicle |
| CN114932942A (en) * | 2022-06-24 | 2022-08-23 | 小米汽车科技有限公司 | Limiting device, steer-by-wire system and vehicle |
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