CN219029534U

CN219029534U - Steering angle limiting device for hand feeling simulation steering column

Info

Publication number: CN219029534U
Application number: CN202222516879.8U
Authority: CN
Inventors: 邓健; 徐刚春
Original assignee: Hangzhou Qingdong Zhixing Technology Co ltd
Current assignee: Hangzhou Qingdong Zhixing Technology Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-05-16
Anticipated expiration: 2032-09-22

Abstract

The utility model discloses a steering angle limiting device of a hand feeling simulation steering column, which comprises an input shaft, an output screw rod, a nut, a limiting block, a shell, a motor and a gear box, wherein one end of the input shaft is fixedly connected with the steering wheel, the other end of the input shaft is fixedly connected with one end of the output screw rod, the other end of the output screw rod is connected with the motor through the gear box, one end of the gear box is fixedly connected with one end of the shell, and the input shaft penetrates through the shell and is connected with the output screw rod positioned in the shell; the shell is provided with a travel groove, the nut is arranged on the output screw rod and in the travel groove, the limiting block is positioned at one end of the travel groove close to the gear box, and the limiting block is provided with a through groove for the output screw rod to pass through and a clamping groove matched with the nut; according to the utility model, the travel groove is formed in the shell, and the limit block is arranged at one end of the travel groove and is matched with the shape of the nut, so that the nut is prevented from rotating, the nut is axially displaced, and the requirements of different rotation limit angles are met by adjusting the position of the nut.

Description

Steering angle limiting device for hand feeling simulation steering column

Technical Field

The utility model relates to the technical field of automobiles, in particular to a steering angle limiting device of a hand feeling simulation steering column.

Background

With the development of automatic driving of automobiles, the steering-by-wire steering is increasingly and widely applied to the automobile steering field, and comprises a steering actuating mechanism and a steering hand feeling simulation mechanism. Therefore, there is an urgent need for a steering angle limiter.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a steering angle limiting device of a hand feeling simulation steering column.

In order to achieve the above purpose, the utility model provides a steering angle limiting device of a hand feeling simulation steering column, which comprises an input shaft, an output screw rod, a nut, a limiting block, a shell, a motor and a gear box, wherein one end of the input shaft is fixedly connected with a steering wheel, the other end of the input shaft is fixedly connected with one end of the output screw rod, the other end of the output screw rod is connected with the motor through the gear box, one end of the gear box is fixedly connected with one end of the shell, and the input shaft penetrates through the shell and is connected with the output screw rod positioned in the shell;

wherein the shell is provided with a travel groove, the nut is arranged on the output screw rod and in the travel groove, the limiting block is positioned at one end of the travel groove close to the gear box, and the limiting block is provided with a through groove for the output screw rod to pass through and a clamping groove matched with the nut.

Preferably, one end of the limiting block is fixedly connected with a connecting cover covered on the travel groove, connecting holes are correspondingly formed in the connecting cover and the shell, and the connecting cover penetrates through the connecting holes through bolts to be fixedly connected with the shell.

Preferably, the outer surface of the nut at least comprises a plane, and the clamping groove is internally provided with an inner wall matched with the plane.

Preferably, the input shaft and the output screw are both passed through the housing by bearings.

Preferably, the output screw rod and the input shaft are provided with stop shoulders, and the bearings arranged on the output screw rod and the input shaft are respectively attached to the stop shoulders.

Preferably, two sides of the bearing are provided with check rings.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the travel groove is formed in the shell, and the limit block is arranged at one end of the travel groove and is matched with the shape of the nut, so that the nut is prevented from rotating, the nut is axially displaced, and the requirements of different rotation limit angles are met by adjusting the position of the nut.

Drawings

FIG. 1 is a front view of a steering angle limiting device of a feel-simulated steering column of the present utility model;

FIG. 2 is a cross-sectional view at A in FIG. 1;

FIG. 3 is a diagram showing the connection between the input shaft and the housing in the steering angle limiting device of the hand feel simulation steering column of the present utility model;

FIG. 4 is a block diagram of an output screw in the steering angle limiting device of the hand feel simulation steering column of the present utility model;

FIG. 5 is a block diagram of a housing in the steering angle limiting device of the feel simulation steering column of the present utility model;

FIG. 6 is a block diagram of a stop block and nut in the steering angle stop device of the feel-simulated steering column of the present utility model;

FIG. 7 is a block diagram of a steering angle limiting device of a feel-simulated steering column of the present utility model;

fig. 8 is an assembly view of a steering angle limiter device of the hand feel simulation steering column of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model is described in further detail below with reference to fig. 1:

referring to fig. 1, the utility model provides a steering angle limiting device of a hand feeling simulation steering column, which comprises an input shaft 11, an output screw rod 5, a nut 7, a limiting block 6, a shell 14, a motor 1 and a gear box 2, wherein one end of the input shaft 11 is fixedly connected with the steering wheel, the other end of the input shaft is fixedly connected with one end of the output screw rod 5, the other end of the output screw rod 5 is connected with the motor 1 through the gear box 2, one end of the gear box 2 is fixedly connected with one end of the shell 14, the input shaft 11 passes through the shell 14 to be connected with the output screw rod 5 positioned in the shell 14, and a spline matched with the input shaft 11 is arranged on the output screw rod 5;

referring to fig. 2, a travel groove is formed in the housing 14, the nut 7 is disposed on the output screw 5 and in the travel groove, the stopper 6 is located at one end of the travel groove near the gear case 2, and a through groove for the output screw 5 to pass through and a clamping groove matched with the nut 7 are formed in the stopper 6. That is, the opening direction of the clamping groove of the limiting block 6 faces the direction of the input shaft 11, the nut 7 is positioned in the clamping groove, and the clamping groove limits the rotation direction of the nut 7, so that the nut 7 axially displaces.

Further, the output screw rod 5 and the input shaft 11 are respectively provided with a shoulder, and bearings arranged on the output screw rod 5 and the input shaft 11 are respectively attached to the shoulders. And retaining rings are arranged on two sides of the bearing.

Referring to fig. 3, the input shaft 11 is provided with a shoulder and a groove, the housing 14 is provided with a bearing position and a groove, the bearing 9 is pressed into the bearing position of the housing 14, the retainer ring 13 is installed in the groove of the housing 14, the input shaft 11 passes through the bearing 9, the bearing 9 is attached to the shoulder of the input shaft 11, and the retainer ring 12 is installed in the groove of the input shaft 11.

Referring to fig. 4 and 6, the outer ring of the output screw rod 5 is provided with an external thread 5-1, the nut 7 is provided with an internal thread 7-1, and the internal thread 7-1 is meshed with the external thread 5-1 to form a thread pair. The output screw rod 5 is screwed into the nut 7, the output screw rod 5 is also provided with a bearing position, a retaining shoulder and a groove, the bearing 4 is pressed into the bearing position to be attached to the retaining shoulder, the retainer ring 10 is arranged in the groove, and the retainer ring 3 is arranged in the groove formed in the shell 14.

Referring to fig. 5, the inner wall of the travel slot has a surface 14-1, and screw holes 14-2 are formed in the periphery of the housing 14 located in the travel slot.

Referring to fig. 6, the outer surface of the nut 7 at least comprises a plane 7-3, and the clamping groove is provided with an inner wall 6-2 matched with the plane. When the outer ring of the nut 7 is provided with the surface 7-3, the inner part of the limiting block 66 is provided with the surface 6-2, and the nut 7 is assembled in the limiting block 66. When the steering wheel drives the screw rod 55 to rotate through the input shaft 11, and the nut 7 rotates under the friction force between the thread pairs, the inner surface 6-2 of the limiting block 6 can block the surface 7-3 of the nut 7 to limit the rotation of the nut 7, and the nut 7 axially moves along the axis of the nut. One end of the limiting block 6 is fixedly connected with a connecting cover covered on the travel groove, connecting holes are correspondingly formed in the connecting cover and the shell 14, and the connecting cover is fixedly connected with the shell 14 by penetrating through the connecting holes through bolts; that is, the stopper 6 is provided with the connecting hole 6-3 corresponding to the screw hole 14-2, so that the stopper 6 is fixed to the housing 14 by the bolt 8.

Further, the through groove and the clamping groove of the limiting block 6 enable the limiting block 6 to form a surface 6-1, and the surface 14-1 is arranged on the inner wall of the travel groove, namely the surface 6-1 of the limiting block 6 and the surface 14-1 of the shell 14 can limit the axial displacement range of the screw rod 5 nut 7 and control the total displacement distance of the screw rod 5 nut 77.

Referring to fig. 7, assuming the lead S of the nut 7, the width L1 of the nut 7, and the distance L2 between the surface 6-1 of the stopper 6 and the surface 14-1 on the inner wall of the travel groove, the total steering angle range of the steering wheel is: α=360° × (L2-L1)/S.

In this embodiment, the mounting connection of the bearing and the retainer ring is a conventional structure of a mechanical structure, which is not described in detail herein. Therefore, the axial displacement of the screw rod is limited by the arranged retainer ring and the bearing.

Referring to fig. 8, the motor 1 and gear box 2 assembly is fastened on the casing 1414 by a bolt 8, and the output shaft of the gear box 2 is provided with a spline, a limiting plane and other structures matched with the screw rod 5, which are all common mechanical structures.

In this embodiment, there is also included a steering upper column tube assembly 15 connected to the steering wheel, which is bolted to the housing 14, and assembled.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The steering angle limiting device of the hand feeling simulation steering column is characterized by comprising an input shaft, an output screw rod, a nut, a limiting block, a shell, a motor and a gear box, wherein one end of the input shaft is fixedly connected with a steering wheel, the other end of the input shaft is fixedly connected with one end of the output screw rod, the other end of the output screw rod is connected with the motor through the gear box, one end of the gear box is fixedly connected with one end of the shell, and the input shaft penetrates through the shell and is connected with the output screw rod positioned in the shell;

2. The steering angle limiting device of the hand feeling simulation steering column according to claim 1, wherein one end of the limiting block is fixedly connected with a connecting cover covered on the travel groove, connecting holes are correspondingly formed in the connecting cover and the shell, and the connecting cover is fixedly connected with the shell through bolts penetrating through the connecting holes.

3. The steering angle limiting device of the hand feeling simulation steering column according to claim 2, wherein the outer surface of the nut at least comprises a plane, and the clamping groove is internally provided with an inner wall matched with the plane.

4. The steering angle limiting device of a feel-simulated steering column of claim 1, wherein the input shaft and the output screw both pass through the housing via bearings.

5. The steering angle limiting device of the hand feeling simulation steering column according to claim 4, wherein the output screw rod and the input shaft are respectively provided with a shoulder, and the bearings arranged on the output screw rod and the input shaft are respectively attached to the shoulders.

6. The steering angle limiting device of a feel simulation steering column according to claim 5, wherein two sides of the bearing are provided with check rings.