Steering mechanism

Abstract

The utility model relates to the technical field of steering mechanisms, and particularly discloses a steering mechanism which comprises a mounting seat, a first rotating shaft, a steering main body and a damper, the upper end of the first rotating shaft is rotatably mounted on the mounting seat, one end of the steering main body is fixedly connected with the mounting seat and used for driving the first rotating shaft to rotate, and the other end of the steering main body is connected with the damper. The damping part comprises a first damping fin fixed on the mounting seat, a second damping fin movably fixed at the lower end of the first rotating shaft and a driving unit, the driving unit can drive the second damping fin to abut against the first damping fin, and under the driving of the driving unit, the second damping fin can always keep abutting against the first damping fin; when the steering main body drives the first rotating shaft to rotate, friction force exists between the first damping fin and the second damping fin and is used for providing damping force for the first rotating shaft, and due to the existence of the driving unit, even if the first damping fin and the second damping fin are abraded, the first damping fin and the second damping fin can keep abutting, the damping force is continuously provided, and the control feeling is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steering mechanisms, in particular to a steering mechanism. Background Art

[0002] In traditional mechanical devices, steering is achieved by driving the steering shaft to rotate via a steering handle, and the steering shaft drives the steering wheel to rotate. In order to improve the steering control feel and avoid oversteering, damping is usually provided to provide resistance to the steering of the steering handle, thereby satisfying the need for control feel.

[0003] Existing damping is usually hydraulic damping, which uses the rotation of the hydraulic oil level steering shaft to provide damping. However, there is a risk of hydraulic oil leakage, which can easily lead to pollution of the environment and the vehicle body. In order to accurately judge the rotation angle, an encoder is usually provided at the lower end of the steering shaft. It monitors the steering angle by monitoring the number of rotations of the steering shaft. However, since the upper end of the steering shaft needs to be connected to the steering handle, the encoder can only be installed at the lower end of the steering shaft, which will take up the installation space of the motor and affect the routing of the wires. Summary of the invention

[0004] The utility model is made in consideration of the above-mentioned problems. The purpose of the utility model is to provide a steering mechanism which can provide damping force through the mutual friction of two damping plates, has good control effect and does not cause pollution. The encoder is installed above the mounting seat and does not interfere with the motor and wires.

[0005] In order to achieve the above object, the utility model provides a steering mechanism, comprising:

[0006] Mounting seat;

[0007] A first rotating shaft, one end of which is rotatably mounted on the mounting seat;

[0008] A steering body, one end of which is fixedly connected to the mounting seat and is used to drive the first rotating shaft to rotate;

[0009] The damping member comprises a first damping plate fixed on the mounting seat, a second damping plate movably fixed on the first rotating shaft, and a driving unit, wherein the driving unit can drive the second damping plate to abut against the first damping plate.

[0010] According to the above-mentioned steering mechanism, a first gear is provided on the lower end of the first rotating shaft, a positioning hole is provided on the top of the first gear, and a positioning protrusion is provided on the bottom of the second damping plate, and the positioning protrusion can be inserted into the positioning hole.

[0011] According to the steering mechanism described above, the second damping plate is located directly below the first damping plate, the driving unit is configured as a spring, one end of the spring is connected to the bottom of the positioning hole, the other end is connected to the bottom of the positioning protrusion, and the spring is in a compressed state.

[0012] According to the above-mentioned steering mechanism, a storage groove is provided between the first damping plate and the second damping plate, and damping grease is provided in the storage groove.

[0013] According to the above-mentioned steering mechanism, it also includes a second rotating shaft and an encoder. The second rotating shaft can be rotatably fixed on the mounting seat, and a second gear is provided on the lower end of the second rotating shaft. The second gear is meshed with the first gear. The encoder is fixed on the upper end of the second rotating shaft and is located above the mounting seat.

[0014] According to the above-mentioned steering mechanism, the first rotating shaft is detachably fixed on the mounting seat.

[0015] The utility model has the following beneficial effects:

[0016] 1. The first damping plate is fixed on the mounting seat, and the second damping plate is fixed on the first rotating shaft, and they can be driven to fit each other through the spring. When the steering body drives the first rotating shaft to rotate, there is friction between the second damping plate and the first damping plate. Due to the existence of the spring, even if there is slight wear, the second damping plate can still be kept in contact with the first damping plate, and the friction is basically consistent. Therefore, when the steering body is controlled, the damping force is relatively balanced, and the control performance is better;

[0017] 2. A storage groove for storing damping grease is provided between the first damping plate and the second damping plate, so that the damping grease can be filled between the first damping plate and the second damping plate, so that the damping is more balanced and the first damping plate and the second damping plate are not easy to wear;

[0018] 3. Through the design of the second rotating shaft, the encoder can be fixed on the top of the mounting base, so the space under the mounting base can be reserved to facilitate the installation of the motor and wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an assembly diagram of a steering body and a mounting seat of an embodiment;

[0020] Figure 2 It is a cross-sectional view of the overall structure of the embodiment.

[0021] In the figure:

[0022] 1. Mounting seat; 2. First rotating shaft; 21. First gear; 211. Positioning hole; 22. Flat key; 3. Steering body; 4. First damping plate; 41. Storage slot; 5. Second damping plate; 51. Positioning protrusion; 6. Spring; 7. Second rotating shaft; 71. Second gear; 8. Encoder. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figure 1-2 As shown, a steering mechanism comprises a mounting seat 1, a first rotating shaft 2, a steering body 3 and a damper, wherein the upper end of the first rotating shaft 2 is rotatably mounted on the mounting seat 1, one end of the steering body 3 is fixedly connected to the mounting seat 1 and is used to drive the first rotating shaft 2 to rotate, and the damping member comprises a first damping plate 4 fixed on the mounting seat 1, a second damping plate 5 movably fixed on the lower end of the first rotating shaft 2 and a driving unit, wherein the second damping plate 5 is located directly below the first damping plate 4, and the driving unit can drive the second damping plate 5 to abut against the first damping plate 4, then under the drive of the driving unit, the second damping plate 5 can always keep in contact with the first damping plate 4, when the steering body 3 drives the first rotating shaft 2 to rotate, there is friction between the first damping plate 4 and the second damping plate 5, which is used to provide damping force to the first rotating shaft 2, and due to the existence of the driving unit, even if the first damping plate 4 and the second damping plate 5 are worn, they will still keep in contact, continue to provide damping force, and improve the control feel.

[0025] In this embodiment, the steering body 3 is configured as a steering handle for controlling the vehicle body to steer.

[0026] In order to realize the movable positioning of the second damping plate 5 and the first rotating shaft 2, a first gear 21 is provided on the lower end of the first rotating shaft 2, and a positioning hole 211 is provided on the top of the first gear 21, and a positioning protrusion 51 is provided on the bottom of the second damping plate 5. The positioning protrusion 51 can be inserted into the positioning hole 211, and the positioning holes 211 are arranged on the first gear 21 along the up and down directions. When the positioning protrusion 51 is inserted into the positioning hole 211, the lateral movement of the second damping plate 5 can be limited so that it can only move up and down. Under the action of the driving unit, it can always maintain the abutment state with the first damping plate 4 by moving upward.

[0027] Specifically, the driving unit is set to be a spring 6, one end of which is connected to the bottom of the positioning hole 211, and the other end is connected to the bottom of the positioning protrusion 51, and the spring 6 is in a compressed state. The spring 6 provides an upward force to the positioning protrusion 51, thereby driving the second damping plate 5 to move upward so that it can be in abutment with the first damping plate 4.

[0028] In order to further improve the control feel, a storage groove 41 is provided between the first damping plate 4 and the second damping plate 5, and damping grease is provided in the storage groove 41. The damping grease will be filled between the first damping plate 4 and the second damping plate 5. When the first damping plate 4 and the second damping plate 5 rotate relative to each other, the damping grease can provide a certain damping effect, so that the damping force at any point between the first damping plate 4 and the second damping plate 5 is relatively uniform, which can further improve the control feel. In addition, due to the presence of the damping grease, the first damping plate 4 and the second damping plate 5 can reduce their wear and tear and increase their service life.

[0029] In order to monitor the steering angle of the vehicle, it also includes a second rotating shaft 7 and an encoder 8. The second rotating shaft 7 can be rotatably fixed on the mounting base 1 and is located on one side of the first rotating shaft 2. A second gear 71 is provided on the lower end of the second rotating shaft 7, and the second gear 71 is meshed with the first gear 21. The encoder 8 is fixed at the upper end of the second rotating shaft 7 and is located above the mounting base 1. Since the lower space of the mounting base 1 needs to install the motor and wiring, if the encoder 8 is installed below the mounting base 1, it will hinder the installation of the motor and the routing of the wires. However, since the upper end of the first rotating shaft 2 needs to be connected to the steering body 3, there is no space for installing the encoder 8. Therefore, in this embodiment, a second rotating shaft 7 is provided on one side of the first rotating shaft 2, and the second rotating shaft 7 is connected to the first rotating shaft 2 through the second gear 71. The encoder 8 can also detect the number of rotations of the first rotating shaft 2 by monitoring the number of rotations of the second rotating shaft 7, which can be calculated by the gear ratio of the first gear 21 and the second gear 71.

[0030] In order to facilitate the maintenance of the first rotating shaft 2, the first rotating shaft 2 is detachably fixed to the mounting base 1. In the present embodiment, the first rotating shaft 2 is connected to the mounting base 1 via a flat key 22. Of course, it can also be fixedly connected by splines, screws or other fixing methods.

[0031] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, and the described embodiments are used to help understand the idea of ​​the utility model. The specific embodiments described herein are merely examples of the spirit of the utility model. A person skilled in the art of the utility model may make various modifications or supplements to the described specific embodiments or replace them in a similar manner, but this will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A steering mechanism, characterized in that: include: Mounting seat; A first rotating shaft, one end of which is rotatably mounted on the mounting seat; A steering body, one end of which is fixedly connected to the mounting seat and is used to drive the first rotating shaft to rotate; The damping member comprises a first damping plate fixed on the mounting seat, a second damping plate movably fixed on the first rotating shaft, and a driving unit, wherein the driving unit can drive the second damping plate to abut against the first damping plate.

2. A steering mechanism according to claim 1, characterized in that: A first gear is disposed on the lower end of the first rotating shaft, a positioning hole is disposed on the top of the first gear, and a positioning protrusion is disposed on the bottom of the second damping plate, and the positioning protrusion can be inserted into the positioning hole.

3. A steering mechanism according to claim 2, characterized in that: The second damping plate is located directly below the first damping plate, the driving unit is configured as a spring, one end of the spring is connected to the bottom of the positioning hole, the other end is connected to the bottom of the positioning protrusion, and the spring is in a compressed state.

4. A steering mechanism according to any one of claims 1 to 3, characterized in that: A storage groove is provided between the first damping plate and the second damping plate, and damping grease is provided in the storage groove.

5. A steering mechanism according to claim 2, characterized in that: It also includes a second rotating shaft and an encoder. The second rotating shaft can be rotatably fixed on the mounting seat, and a second gear is provided on the lower end of the second rotating shaft. The second gear is meshed with the first gear. The encoder is fixed on the upper end of the second rotating shaft and is located above the mounting seat.

6. A steering mechanism according to claim 1, characterized in that: The first rotating shaft is detachably fixed on the mounting seat.

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