Limiting structure for steer-by-wire hand feeling simulator
Through the direct connection between the rotating shaft and the limit nut and the coordination of the guide mechanism, the problems of large space and unstable operation of the traditional limit structure are solved, and a more compact and safer limit structure is achieved, which improves operating stability and use life.
Patent Information
- Application Number
- CN202421163391.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The limit structure of the traditional line-controlled steering feel simulator takes up a lot of space, poor collision safety, and uneven loosening of the intermediate shaft leads to unstable operational feeling.
The rotating shaft is directly connected to the limit nut, and the circular motion of the steering wheel is converted into the linear motion of the limit nut through the guide mechanism, cancel the intermediate shaft, and use the limit block for precise limiting to reduce friction and wear.
Improves system compactness and collision safety, reduces friction and wear, provides a more stable and predictable operating experience, and improves service life and mechanical efficiency.
Smart Images
Figure CN222247358U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wire-controlled steering systems, in particular to a limiting structure for a wire-controlled steering feel simulator. Background Art
[0002] Steer-by-wire simulators are commonly used to simulate the feel of a vehicle's steering system, particularly in driving games or simulators. These devices typically incorporate a series of sensors, actuators, and control systems to mimic the feel and feedback of a real vehicle's steering system. A key component is the stop mechanism, which restricts the steering wheel's movement to a specific range.
[0003] The traditional limiting mechanism connects the column and the steering gear end through an intermediate shaft, and then limits the position through the limit blocks at both ends of the rack inside the steering gear. It takes up a large space in the cabin and has poor collision safety. The contact between the intermediate shaft and the supporting components will cause additional friction and wear, reducing the service life. At the same time, during long-term use, the intermediate shaft may have uneven looseness or errors, resulting in an unstable operating experience.
[0004] Therefore, the present application has developed a limiting structure for a wire-controlled steering feel simulator to solve the problems existing in the prior art. Utility Model Content
[0005] The purpose of the utility model is to provide a limiting structure for a wire-controlled steering feel simulator to solve the problems in the prior art of converting the circular motion of the steering wheel into the linear motion of the limiting nut through the intermediate shaft, resulting in a large cabin space occupation, poor collision safety, and unstable operating feeling caused by the looseness of the intermediate shaft during long-term use.
[0006] The technical solution of the utility model is: a limiting structure for a wire-controlled steering feel simulator, comprising:
[0007] a housing, a rotating shaft mounted within the housing;
[0008] The rotating shaft is arranged along the axial direction of the housing, one end of the rotating shaft is connected to the steering wheel, and the other end is rotatably connected to the limiting mechanism;
[0009] The limiting mechanism includes a limiting nut and a pair of limiting blocks; the limiting nut is rotatably connected to the rotating shaft, and the pair of limiting blocks are fixed on the rotating shaft and distributed at both axial ends of the limiting nut;
[0010] A guide mechanism for limiting the rotation of the limiting nut is provided in the limiting mechanism.
[0011] Preferably, the housing includes a wire-controlled steering column, a booster housing and a sleeve. The booster housing is arranged at the end of the wire-controlled steering column away from the steering wheel. The side of the booster housing away from the steering wheel is fixedly connected to the sleeve, and the limit nut is arranged in the sleeve.
[0012] Preferably, the axial length of the sleeve or the axial length of the booster housing is greater than the distance between the two limit blocks.
[0013] Preferably, the guide mechanism includes a first guide portion and a second guide portion, the first guide portion is arranged on the radially outer side of the limit nut; the second guide portion is arranged along the axial direction of the rotating shaft and on the inner side surface of the sleeve.
[0014] Preferably, the second guide portion corresponds to the first guide portion in position, and the radial outer side surface of the first guide portion fits with the radial inner side surface of the second guide portion.
[0015] Preferably, the outer side surface of the rotating shaft and the inner side surface of the limiting nut are connected by threads, and when the rotating shaft rotates, the limiting nut slides relative to the second guide portion along the axial direction of the rotating shaft.
[0016] Preferably, limiting bosses are respectively provided at both axial ends of the limiting nut.
[0017] Preferably, the distance between the two limiting blocks is greater than the distance between the two limiting bosses.
[0018] Preferably, when the limiting nut moves to a limit position along the axial direction of the rotating shaft, the limiting nut stops moving, and the limit position is a position when the limiting boss abuts against the corresponding limiting block.
[0019] Compared with the prior art, the advantages of the present invention are:
[0020] (1) Through the rotational connection between the rotating shaft and the limit nut, and with the cooperation of the first guide part and the second guide part, the circular motion of the steering wheel is converted into the linear motion of the limit nut, which greatly improves the transmission efficiency;
[0021] (2) Eliminating the traditional intermediate shaft and directly connecting the rotating shaft and the limit nut makes the structure more compact, reduces weight, makes the system lighter, and improves collision safety. At the same time, it can also reduce additional friction and wear, improve mechanical efficiency and durability, and prevent uneven rotation or swing of the intermediate shaft, thus providing a more stable and predictable operating experience;
[0022] (3) By setting a limit block on the rotating shaft, the linear motion of the limit nut is limited, and the traditional limit by gear is replaced. Since the limit block is not affected by wear, the reliability and durability of use are improved, and at the same time, a precise limit position can be provided. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0024] Figure 1 This is an overall structural diagram of a limit structure for a wire-controlled steering feel simulator according to the present invention;
[0025] Figure 2 This is a side sectional view of a limiting structure for a wire-controlled steering feel simulator according to the present invention;
[0026] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A in the middle;
[0027] Figure 4 This is a schematic structural diagram of the rotating shaft in the present invention;
[0028] Figure 5 This is a schematic structural diagram of the limit nut in the utility model;
[0029] Figure 6 This is a schematic structural diagram of the sleeve in the utility model;
[0030] Figure 7 This is a schematic structural diagram of the sleeve and the booster housing in the second embodiment of the present utility model;
[0031] Figure 8 This is a schematic structural diagram of the sleeve and booster housing in the third embodiment of the present utility model;
[0032] Figure 9 This is a structural diagram of one of the limiting mechanisms in the present utility model;
[0033] Figure 10 This is a structural diagram of one type of the limiting mechanism in the utility model.
[0034] in:
[0035] 1. Housing; 11. Wire-controlled steering column; 12. Booster housing; 13. Sleeve; 2. Rotating shaft; 3. Limiting mechanism; 31. Limiting nut; 32. Limiting block; 4. Guide mechanism; 41. First guide portion; 42. Second guide portion; 43. Protrusion; 44. Groove; 5. Limiting boss. DETAILED DESCRIPTION
[0036] The following is a further detailed description of the present invention in conjunction with specific embodiments:
[0037] like Figure 1-Figure 4 As shown, a limiting structure for a wire-controlled steering feel simulator includes a shell 1 and a rotating shaft 2 installed in the shell 1, one end of the rotating shaft 2 is connected to the steering wheel, and the other end is rotationally connected to a limiting mechanism 3, the limiting mechanism 3 includes a limiting nut 31 connected to the rotating shaft 2, and two limiting blocks 32 fixed to the rotating shaft 2 and distributed at both axial ends of the limiting nut 31, the rotating shaft 2 rotates together with the steering wheel, and the rotating shaft 2 is rotationally connected to the limiting nut 31, when the rotating shaft 2 rotates, the limiting nut 31 can only make a linear motion along the axial direction of the rotating shaft 2 under the state of limiting rotation by the guide mechanism 4, and when the axial end face of the limiting nut 31 contacts the corresponding limiting block 32, the limiting nut 31 stops moving, thereby limiting the axial direction of the limiting nut 31.
[0038] In this embodiment, the housing 1 includes a wire-controlled steering column 11, a booster housing 12 and a sleeve 13. The booster housing 12 is arranged at the end of the wire-controlled steering column 11 away from the steering wheel. The sleeve 13 is fixed to the side of the booster housing 12 away from the steering wheel by means of but not limited to bolts, welding, bayonet, hot melt, etc. Preferably, the sleeve 13 is fixed to the booster housing 12 using hexagonal head bolts to improve the stability and firmness of the sleeve 13 and the booster housing 12, which can effectively prevent loosening or displacement between the two components, thereby ensuring the structural stability of the entire assembly.
[0039] like Figure 4-Figure 6 As shown, the guide mechanism 4 includes at least one first guide portion 41 arranged on the radial outside of the limit nut 31 and a second guide portion 42 arranged on the inner side of the sleeve 13. The outer side surface of the first guide portion 41 and the inner side surface of the second guide portion 42 are in contact with each other. When the limit nut 31 moves relative to the sleeve 13, the first guide portion 41 and the second guide portion 42 abut against each other, so that the limit nut 31 cannot rotate relative to the sleeve 13. Because the limit nut 31 is connected to the rotating shaft 2 by a thread, when the rotating shaft 2 rotates, with the cooperation of the first guide portion 41 and the second guide portion 42, the limit nut 31 can only make axial linear motion relative to the sleeve 13.
[0040] In one embodiment, if Figure 5 and Figure 6 As shown, the first guide portion 41 includes two limiting surfaces, and the second guide portion 42 includes two guide blocks. The two limiting surfaces are parallel to the corresponding two guide blocks and correspond one to one. When the rotating shaft 2 rotates, the guide blocks and the limiting surfaces abut against each other, so that the limiting nut 31 cannot rotate and can only move linearly along the axial direction of the rotating shaft 2.
[0041] In other embodiments, Figure 9and Figure 10 The first guide portion 41 and the second guide portion 42 shown can also be a groove 44 and a protrusion 43 that match each other. The groove 44 and the protrusion 43 are engaged with each other. When the rotating shaft 2 rotates, the limit nut 31 cannot rotate due to the engagement of the groove 44 and the protrusion 43, so that the limit nut 31 makes a linear motion on the rotating shaft 2; the limit nut 31 and the sleeve 13 can also be respectively provided with multiple first guide portions 41 and second guide portions 42 along the circumferential direction, and the multiple first guide portions 41 and the multiple second guide portions 42 correspond one to one, and the rotation of the limit nut 31 is limited by multiple groups of guide mechanisms 4.
[0042] As a further explanation, as long as the end face contour shapes corresponding to the first guide portion 41 and the second guide portion 42 are not in the same circle as the outer wall contour of the limit nut 31, they can limit the rotation of the limit nut 31. Therefore, the end faces of the first guide portion 41 and the second guide portion 42 can be constructed into any shape that is not in the same circle as the outer wall contour of the limit nut 31.
[0043] In order to enable the limit nut 31 to move in the sleeve 13 and be limited by the two limit blocks 32 on the rotating shaft 2, the axial length of the sleeve 13 needs to be greater than the distance between the two limit blocks 32. When the limit nut 31 is not in contact with the limit blocks 32, the limit nut 31 is always in the sleeve 13 to prevent the limit nut 31 from escaping from the sleeve 13. As a result, when the rotating shaft 2 rotates, the second guide portion 42 and the first guide portion 41 change from abutting against each other to not contacting each other, causing the limit nut 31 to rotate with the rotating shaft 2, and thus the limit of the limit nut 31 cannot be achieved, resulting in mechanical damage and increased operational risks.
[0044] In order to improve the accuracy and stability of the limit, in this embodiment, Figure 4-Figure 5 As shown, limiting bosses 5 are respectively provided at both axial ends of the limiting nut 31, and the two limiting bosses 5 are located between the two limiting blocks 32. When the limiting nut 31 moves linearly along the axial direction of the rotating shaft 2 and moves to the extreme position, the limiting bosses 5 abut against the corresponding limiting blocks 32, thereby stopping the limiting nut 31 from moving.
[0045] In the second embodiment, Figure 7 As shown, the limit nut 31 is arranged in the booster housing 12, and the second guide portion 42 is arranged on the inner side surface of the booster housing 12. In this embodiment, the rotating shaft 2 rotates, and under the cooperation of the second guide portion 42 and the first guide portion 41 abutting against each other, the limit nut 31 makes a linear motion along the axial direction of the rotating shaft 2 relative to the booster housing 12, and the axial length of the booster housing 12 is greater than the distance between the two limit blocks 32.
[0046] In the third embodiment, Figure 8As shown, the sleeve 13 and the booster housing 12 are cast as one piece, the limit nut 31 is arranged in the sleeve 13 or the booster housing 12, and the corresponding second guide portion 42 is arranged in the sleeve 13 or the booster housing 12. When the rotating shaft 2 rotates, the first guide portion 41 and the second guide portion 42 on the limit nut 31 contact each other and limit the rotation of the limit nut 31. The limit nut 31 rotates with the rotating shaft 2 and makes a linear motion in the sleeve 13 or the booster housing 12 along the axial direction of the rotating shaft 2.
[0047] The implementation principle of the embodiment of this application:
[0048] The sleeve 13 is fixed to the booster housing 12 by a hexagonal bolt. When the steering wheel is turned, the rotating shaft 2 rotates with the steering wheel. The rotating shaft 2 is directly connected to the limit nut 31 by a thread. There is no need to adjust the movement of the limit nut 31 through an intermediate shaft, which greatly improves the transmission efficiency. The elimination of the intermediate shaft makes the system lighter, improves collision safety, reduces additional friction and wear, improves mechanical efficiency and durability, and does not cause uneven rotation or swing of the intermediate shaft. When the rotating shaft 2 rotates, the first guide part 41 and the second guide part 42 contact and abut each other, so that the limit nut 31 cannot rotate with the rotating shaft 2 and can only move in the sleeve 13 along the axial direction of the rotating shaft 2. When the limit bosses 5 at both ends of the limit nut 31 contact the corresponding limit blocks 32, the limit nut 31 cannot continue to move and stops. The limit blocks 32 can accurately limit the moving position of the limit nut 31, thereby improving the accuracy of the limit.
[0049] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.
Claims
1. A limit structure for a wire-controlled steering feel simulator, characterized in that: It includes: a housing, and a rotating shaft installed in the housing; The rotating shaft is arranged along the axial direction of the housing, one end of the rotating shaft is connected to the steering wheel, and the other end is rotatably connected to the limiting mechanism; The limiting mechanism includes a limiting nut and a pair of limiting blocks; the limiting nut is rotatably connected to the rotating shaft, and the pair of limiting blocks are fixed on the rotating shaft and distributed at both axial ends of the limiting nut; A guide mechanism for limiting the rotation of the limiting nut is arranged in the limiting mechanism.
2. The limiting structure for a steering-by-wire feel simulator according to claim 1, characterized in that: The shell includes a wire-controlled steering column, a booster shell and a sleeve. The booster shell is arranged at one end of the wire-controlled steering column away from the steering wheel. The booster shell is fixedly connected to the sleeve on one side away from the steering wheel, and the limit nut is arranged in the sleeve.
3. The limiting structure for a steering-by-wire feel simulator according to claim 2, characterized in that: The axial length of the sleeve or the axial length of the booster housing is greater than the distance between the two limit blocks.
4. The limiting structure for a steering-by-wire feel simulator according to claim 2, characterized in that: The guide mechanism comprises a first guide portion and a second guide portion, wherein the first guide portion is arranged on the radially outer side of the limit nut; and the second guide portion is arranged along the axial direction of the rotating shaft and on the inner side surface of the sleeve.
5. The limiting structure for a steering-by-wire feel simulator according to claim 4, characterized in that: The second guide portion corresponds to the first guide portion in position, and the radial outer side surface of the first guide portion is in contact with the radial inner side surface of the second guide portion.
6. The limiting structure for a steering-by-wire feel simulator according to claim 4, characterized in that: The outer side surface of the rotating shaft and the inner side surface of the limiting nut are connected by threads. When the rotating shaft rotates, the limiting nut slides relative to the second guide portion along the axial direction of the rotating shaft.
7. The limiting structure for a steering-by-wire feel simulator according to claim 1, characterized in that: The limiting nut is provided with limiting bosses at both axial ends thereof.
8. The limiting structure for a steering-by-wire feel simulator according to claim 7, characterized in that: The distance between the two limiting blocks is greater than the distance between the two limiting bosses.
9. The limiting structure for a steering-by-wire feel simulator according to claim 7, characterized in that: When the limiting nut moves to a limit position along the axial direction of the rotating shaft, the limiting nut stops moving, and the limit position is a position when the limiting boss abuts against the corresponding limiting block.