CN215513845U

CN215513845U - Amphibious steering column integrated with angle sensor

Info

Publication number: CN215513845U
Application number: CN202121323877.6U
Authority: CN
Inventors: 范卫兵; 徐午; 敖政; 秦孝明; 郑志明
Original assignee: Dongfeng Off Road Vehicle Co Ltd
Current assignee: Dongfeng Off Road Vehicle Co Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-01-14
Anticipated expiration: 2031-06-15

Abstract

The utility model belongs to the technical field of vehicle steering columns, and particularly discloses an amphibious steering column integrated with an angle sensor. The steering wheel comprises an upper shaft, an outer shell, a pressing sleeve and an angle sensor, wherein the outer shell is fixedly connected with a frame, the upper shaft is arranged on the central axis of the outer shell and fixedly connected with a steering wheel, and a step surface is arranged on the upper shaft; the pressing sleeve is press-mounted on the excircle of the upper shaft in an interference manner, one end of the pressing sleeve is in contact with the step surface, and the pressing sleeve is used for limiting the axial movement of the angle sensor assembly along the upper shaft; the rotor of the angle sensor is fixedly sleeved on the periphery of the pressing sleeve and rotates along with the pressing sleeve or the upper shaft, and one end of the stator of the angle sensor penetrates through the outer shell and is limited in the axial direction and the circumferential direction through a cover plate fixedly connected to the outer shell. The utility model provides a structure of a dual-purpose steering column integrated angle sensor, which can perform waterproof and dustproof protection on the angle sensor and reduce the failure rate of the steering angle sensor.

Description

Amphibious steering column integrated with angle sensor

Technical Field

The utility model belongs to the technical field of automobile steering columns, and particularly relates to an amphibious steering column integrated with an angle sensor.

Background

When the amphibious vehicle runs on water, an angle sensor needs to be integrated on an upper shaft of the amphibious steering column, so that an angle input signal can be provided for the water steering system in real time through rotation of a steering wheel to feed back the driving intention of a driver.

In the existing hydraulic steering system, a steering angle sensor is usually arranged on an input shaft or a steering transmission shaft of a steering engine, and the steering angle sensor is exposed outside, so that the steering angle sensor is easy to hit by broken stones and difficult to perform dustproof and waterproof protection on the steering angle sensor, and the fault rate of the steering angle sensor is higher. Chinese patent CN201721505276.0 discloses a heavy-duty car steering angle sensor mounting structure, which includes a steering angle sensor, and the improvement lies in that the steering angle sensor is mounted at the position of the steering column assembly close to the steering wheel through an annular connecting frame. This patent mounting structure can play better guard action to turning to angle sensor, reduces turning to angle sensor's fault rate. However, the structure of the patent does not protect the angle sensor from dust and water, and the angle sensor is easily damaged.

Based on the above problems, there is a need in the art to provide a new amphibious steering column integrated with an angle sensor, which improves the measurement accuracy of the angle sensor, and simultaneously protects the angle sensor from water and dust, thereby reducing the failure rate of the steering angle sensor.

Disclosure of Invention

Aiming at the defects or improvement requirements of the prior art, the utility model provides an amphibious steering column integrated with an angle sensor, wherein a device capable of accurately providing a steering wheel rotation angle signal is correspondingly designed by combining the characteristics of the steering column and the process characteristics of angle measurement of the angle sensor, and the structures and specific arrangement modes of key components of the device, such as an upper shaft, an outer shell, a pressing sleeve, the angle sensor and a cover plate, are researched and designed, so that a rotor of the angle sensor can rotate along with the upper shaft, and the steering system on water can be provided with the angle signal of a steering wheel corner. Simultaneously, the stator part does not take place axial displacement and the deflection of circumference, damages angle sensor when preventing to install or extract the connector, improves angle sensor's measurement accuracy simultaneously, in addition, angle sensor is inside to be enclosed in a sealed casing to realize the waterproof dustproof to angle sensor, reduce and turn to angle sensor fault rate.

In order to achieve the above object, the present invention provides an angle sensor integrated amphibious steering column, comprising an upper shaft, an outer housing, a pressure sleeve and an angle sensor, wherein,

the outer shell is fixedly connected with the frame and is provided with a cavity for accommodating the angle sensor;

the upper shaft is arranged on the central axis of the outer shell, is fixedly connected with the steering wheel and is driven by the steering wheel to rotate relative to the outer shell along the axial direction, and a step surface is arranged on the upper shaft;

the pressing sleeve is pressed on the outer circle of the upper shaft in an interference fit mode, one end of the pressing sleeve is in contact with the step surface, and the pressing sleeve is used for limiting the angle sensor assembly to move along the axial direction of the upper shaft;

the outer circle of the pressing sleeve is fixedly sleeved with a rotor of the angle sensor, the pressing sleeve rotates along with the outer circle of the pressing sleeve, one end of a stator of the angle sensor penetrates through the outer shell, and the axial and circumferential limiting is carried out through a cover plate fixedly arranged on the outer shell.

Preferably, a rotor thrust surface is arranged on the outer side wall of one end of the pressing sleeve in the circumferential direction, a clamp spring groove is formed in the other end of the pressing sleeve, a clamp spring is arranged in the clamp spring groove, and the rotor is arranged between the rotor thrust surface and the clamp spring.

Preferably, the pressing sleeve is provided with a plurality of sliding grooves, the sliding grooves are axially arranged along the upper shaft, and the rotor is provided with a plurality of keys which are arranged in one-to-one correspondence with the sliding grooves, so that the rotor cannot rotate relative to the pressing sleeve.

Preferably, the cover plate is L-shaped, a limit groove for accommodating the stator is formed in the cover plate, the shape of the limit groove is matched with the cross section shape of the stator, and the peripheral side wall of the limit groove is composed of a thrust surface and a rotation stopping surface.

Preferably, the cover plate is fixedly connected with the outer shell through bolts.

Generally, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:

1. according to the utility model, through researching and designing the structures and specific arrangement modes of the upper shaft, the outer shell, the pressing sleeve, the angle sensor and the cover plate of the steering column, the rotor of the angle sensor can rotate along with the upper shaft, so that an angle signal of a steering wheel corner can be provided for the water steering system. Simultaneously, stator part does not take place axial displacement and circumferential deflection, damages angle sensor when preventing to install or extract the connector, and in addition, angle sensor is inside encircleed in a sealed casing to realize the waterproof dustproof to angle sensor, reduce and turn to angle sensor fault rate.

2. According to the utility model, through the matching of the pressing sleeve, the key and the sliding groove and the clamp spring, the angle sensor is convenient to install, and the assembly error is easy to guarantee.

3. The limiting groove is matched with the cross section of the stator of the angle sensor so as to limit the axial sliding and circumferential rotation of the angle sensor.

Drawings

Fig. 1 is a three-dimensional schematic diagram of the general arrangement of an angle sensor integrated amphibious steering column according to an embodiment of the present invention;

FIG. 2 is a three-dimensional schematic view of a mounting structure of a pressing sleeve and an upper shaft according to an embodiment of the present invention;

FIG. 3 is a three-dimensional schematic view of a portion of the upper shaft of FIG. 1;

FIG. 4 is a three-dimensional schematic view of the press sleeve construction referred to in FIG. 2;

FIG. 5 is a three-dimensional schematic view of the structure of the angle sensor referred to in FIG. 1;

FIG. 6 is a three-dimensional schematic view of a partial structure of an angle sensor according to the present invention mounted on an upper shaft;

fig. 7 is a schematic view of a three-dimensional structure of the cover plate installation related to fig. 1.

In all the figures, the same reference numerals denote the same features, in particular: 1-outer shell, 1.1-mounting face, 2-angle sensor, 3-cover plate, 2.1-stator, 2.2-rotor, 2.21-left end face, 2.22-right end face, 2.31-key, 2.32-key, 2.33-key, 3-cover plate, 3.1-limiting groove, 3.11-rotation stop face, 3.12-thrust face, 3.13-thrust face, 3.14-rotation stop face, 4-bolt, 5-upper shaft, 5.1-excircle, 5.2-step face, 6-pressing sleeve, 6.1-left end face, 6.2-inner circle, 6.31-chute, 6.32-chute, 6.33-chute, 6.4-snap spring groove, 6.5-rotor face, and 7-snap spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, 2,3, 6 and 7, an angle sensor-integrated amphibious steering column according to an embodiment of the present invention includes an upper shaft 5, and the upper shaft 5 is fixed to a steering wheel (not shown) and is rotatable together therewith. The periphery of upper shaft 5 is equipped with shell body 1, and shell body 1 is fixed on the frame through the support, and this shell body 1 rotates with upper shaft 5 and is connected, and upper shaft 5 rotates along with the steering wheel under the drive of steering wheel promptly, and shell body 1 is then fixed motionless. The outer housing 1 is a hollow structure having a cavity therein through which the upper shaft 5 is disposed. An outer circle 5.1 is arranged on the upper shaft, a step surface 5.2 is arranged at one end, away from the steering wheel, of the outer circle 5.1, and the diameter of the step surface 5.2 is larger than that of the outer circle 5.1. The pressing sleeve 6 is arranged on the periphery of the excircle 5.1 in an interference press-fitting mode. One end of the pressing sleeve 6 is pressed on the step surface 5.2, and the pressing sleeve 6 is used for limiting the movement of the angle sensor assembly along the axial direction of the upper shaft 5.

As shown in fig. 2 and 4, in one embodiment of the utility model, the press sleeve 6 includes, but is not limited to, a plastic press sleeve or a nylon press sleeve. An inner circle 6.2 is arranged on the pressing sleeve 6, and the diameter of the inner circle 6.2 is matched with that of the outer circle 5.1, so that the pressing sleeve 6 is in interference fit with the upper shaft 5. The pressing sleeve 6 is also provided with a left end surface 6.1, a clamp spring groove 6.4, a rotor thrust surface 6.5 and sliding grooves (6.31,6.32 and 6.33) which are arranged in sequence. Wherein, the left end face 6.1 is arranged at one end of the pressing sleeve 6 and is abutted against the step face 5.2. The rotor thrust surface 6.5 is arranged opposite to the left end surface 6.1, and the rotor thrust surface 6.5 is arranged in a manner of abutting against the left end surface 2.21 of the angle sensor 2. The other end of pressing cover 6 is located to jump ring groove 6.4, presses the one end that cover 6 is close to the steering wheel promptly, is provided with jump ring 7 in this jump ring groove 6.4, holds angle sensor 2's rotor 2.2 between this jump ring 7 medial surface and the rotor thrust surface 6.5 just. The chutes (6.31,6.32,6.33) are arranged in a plurality of, but not limited to three, provided in the present embodiment, and other numbers of chutes can meet the requirements of the present invention. The slide grooves (6.31,6.32,6.33) are arranged axially along the upper shaft 5. Correspondingly, a plurality of keys (2.31, 2.32, 2.33) which are arranged corresponding to the sliding grooves (6.31,6.32,6.33) one by one are arranged on the rotor 2.2, namely, the number of the sliding grooves is provided, the number of the corresponding keys is provided, and each sliding groove is provided with one key. In this way, the movement of the rotor 2.2 along the axis of the upper shaft 5 is limited, as is the rotation of the rotor 2.2 about the upper shaft 5, i.e. the rotor 2.2 follows the steering wheel. Meanwhile, when the angle sensor 2 is installed, the keys (2.31, 2.32 and 2.33) are inserted into the sliding grooves (6.31,6.32 and 6.33) firstly, so that the angle sensor 2 slides along the sliding grooves (6.31,6.32 and 6.33) through the keys (2.31, 2.32 and 2.33) until the rotor 2.2 abuts against the rotor thrust surface 6.5, and then the clamp spring 7 is installed in the clamp spring groove 6.4, so that the initial fixed installation of the angle sensor 2 is completed.

As shown in fig. 5 and 7, the stator 2.1 of the angle sensor 2 has a length a and a width B, the outer casing 1 is provided with a cavity for arranging the angle sensor 2, the outer wall of the cavity is provided with an L-shaped mounting surface 1.1, and the cover plate 3 is fixedly connected with the outer casing 1 through a plurality of bolts 4. Correspondingly, in the utility model, the cover plate 3 is L-shaped, the cover plate is provided with a limit groove 3.1, the limit groove 3.1 is used for penetrating through a shell of a stator 2.1 of the angle sensor 2, the limit groove 3.1 is also provided with thrust surfaces (3.12,3.13) and rotation stop surfaces (3.11, 3.14), wherein the distance between the thrust surface 3.12 and the thrust surface 3.13 is larger than the width B of the stator 2.1, so that the installation error of the angle sensor stator along the axial direction of the upper shaft is eliminated, meanwhile, the distance between the rotation stop surface 3.11 and the rotation stop surface 3.14 is equal to the length A of the stator so as to limit the stator 2.1 to rotate along the circumferential direction of the upper shaft 5, and the thrust surface 3.13 is also provided with an interface groove for accommodating the connector interface of the angle sensor 2. After the first fixed mounting of angle sensor 2 was accomplished promptly, overlap the spacing groove 3.1 of apron 3 on angle sensor 2 again, then adopt the bolt to carry out the fixed of apron 3, paint sealed fastening glue in gap department at last, accomplish the final fixed mounting of angle sensor 2 with this, with this mode, the clearance between thrust face (3.12,3.13) and the angle sensor is eliminated, thereby can avoid losing angle sensor when inserting or extracting angle sensor's connector, play waterproof and dirt-proof effect simultaneously.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An amphibious steering column integrated with an angle sensor is characterized by comprising an upper shaft (5), an outer shell (1), a pressing sleeve (6) and the angle sensor (2), wherein,

the outer shell (1) is fixedly connected with a frame, and a cavity for accommodating the angle sensor (2) is formed in the outer shell (1);

the upper shaft (5) is arranged on the central axis of the outer shell (1), the upper shaft (5) is fixedly connected with a steering wheel and driven by the steering wheel to rotate relative to the outer shell (1) along the axial direction, and a step surface (5.2) is arranged on the upper shaft (5);

the pressing sleeve (6) is pressed on the outer circle (5.1) of the upper shaft (5) in an interference fit mode, one end of the pressing sleeve (6) is in contact with the step surface (5.2), and the pressing sleeve (6) is used for limiting the angle sensor assembly to move along the axial direction of the upper shaft (5);

the outer circle of pressing cover (6) is located to the fixed cover in rotor (2.2) of angle sensor (2), and follows pressing cover (6) rotates, and the one end of stator (2.1) of this angle sensor (2) passes shell body (1) to apron (3) through fixed locating on shell body (1) carry out axial and circumferential spacing.

2. An amphibious steering column integrated with an angle sensor according to claim 1, characterized in that one end of the pressing sleeve (6) is provided with a rotor thrust surface (6.5) on the periphery of the outer side wall, the other end of the pressing sleeve (6) is provided with a clamp spring groove (6.4), a clamp spring (7) is arranged in the clamp spring groove (6.4), and the rotor (2.2) is arranged between the rotor thrust surface (6.5) and the clamp spring (7).

3. An angle sensor integrated amphibious steering column according to claim 1, characterised in that the compression sleeve (6) is provided with a number of runners (6.31,6.32,6.33), which runners (6.31,6.32,6.33) are arranged axially along the upper shaft (5), and that the rotor (2.2) is provided with a number of keys (2.31, 2.32, 2.33) arranged in a one-to-one correspondence with the runners (6.31,6.32,6.33), in such a way that the rotor (2.2) does not rotate relative to the compression sleeve (6).

4. The amphibious steering column integrated with the angle sensor according to claim 1, characterized in that the cover plate (3) is L-shaped, a limiting groove (3.1) for accommodating the stator (2.1) is formed in the cover plate (3), the shape of the limiting groove (3.1) is matched with the cross-sectional shape of the stator (2.1), and the peripheral side wall of the limiting groove (3.1) is composed of thrust surfaces (3.12,3.13) and rotation stopping surfaces (3.11, 3.14).

5. An angle sensor integrated amphibious steering column according to any of claims 1-4, where the cover plate (3) is fixedly connected to the outer housing (1) by means of bolts (4).