In-wheel motor suspension and vehicle body connecting structure thereof

文档序号:1135990 发布日期:2020-10-09 浏览:12次 中文

阅读说明:本技术 一种轮毂电机悬架及其车身连接结构 (In-wheel motor suspension and vehicle body connecting structure thereof ) 是由 刘威 史建鹏 王秋来 赵春来 王念 于 2020-06-15 设计创作,主要内容包括:本发明公开了一种轮毂电机悬架及其车身连接结构,包括上控制臂、下控制臂和弹簧减振器,上控制臂的一侧和下控制臂的一侧均设有可与转向节铰接连接的转向节连接结构,上控制臂的另一侧和下控制臂的另一侧均设有可与车身铰接连接的车身连接结构,下控制臂上设有与弹簧减振器铰接连接的减振器下支架;上控制臂包括内部中空的环形管和固定连接于环形管左右两侧、与环形管为一体结构且内部中空的上控制臂连管;下控制臂包括内部中空的三角板和固定连接于三角板左右两侧、与三角板为一体结构且内部中空的下控制臂连管,下控制臂连管之间固定连接有内部中空的连接管。通过对悬架的控制臂结构进行优化,控制臂截面采用中空矩形结构,大大提高了承载力。(The invention discloses a wheel hub motor suspension and a vehicle body connecting structure thereof, which comprises an upper control arm, a lower control arm and a spring shock absorber, wherein one side of the upper control arm and one side of the lower control arm are respectively provided with a steering knuckle connecting structure which can be hinged with a steering knuckle, the other side of the upper control arm and the other side of the lower control arm are respectively provided with a vehicle body connecting structure which can be hinged with a vehicle body, and the lower control arm is provided with a shock absorber lower support which is hinged with the spring shock absorber; the upper control arm comprises an annular tube with a hollow interior and upper control arm connecting tubes which are fixedly connected to the left side and the right side of the annular tube, are integrated with the annular tube into a whole and are hollow in the interior; the lower control arm comprises a hollow triangular plate and a hollow lower control arm connecting pipe, wherein the hollow triangular plate and the hollow lower control arm connecting pipe are fixedly connected to the left side and the right side of the triangular plate respectively and are integrated with the triangular plate, and the hollow connecting pipe is fixedly connected between the lower control arm connecting pipes. Through optimizing the control arm structure of suspension, the control arm cross-section adopts hollow rectangle structure, has improved the bearing capacity greatly.)

1. An in-wheel motor suspension, includes control arm (1), lower control arm (2) and spring damper (3), its characterized in that: a steering knuckle connecting structure which can be hinged with a steering knuckle (4) is arranged on one side of the upper control arm (1) and one side of the lower control arm (2), a vehicle body connecting structure which can be hinged with a vehicle body is arranged on the other side of the upper control arm (1) and the other side of the lower control arm (2), and a shock absorber lower support (5) which is hinged with a spring shock absorber (3) is arranged on the lower control arm (2); the upper control arm (1) comprises an annular tube (1.1) with a hollow interior and an upper control arm connecting tube (1.2) which is fixedly connected to the left side and the right side of the annular tube (1.1), integrated with the annular tube (1.1) and hollow in the interior; lower control arm (2) including inside hollow set-square (2.1) and fixed connection in the set-square (2.1) left and right sides, with set-square (2.1) structure and inside hollow lower control arm link pipe (2.2) as an organic whole, fixedly connected with inside hollow connecting pipe between lower control arm link pipe (2.2).

2. The in-wheel motor suspension of claim 1, wherein: an included angle formed by the annular pipe (1.1) and the upper control arm connecting pipe (1.2) is an obtuse angle; be equipped with on annular pipe (1.1) can with the knuckle of knuckle (4) articulated connection goes up connection structure, go up control arm connecting pipe (1.2) and keep away from one side of annular pipe (1.1) be connected with can with the articulated connection of automobile body on the automobile body connection structure.

3. The in-wheel motor suspension of claim 2, wherein: the upper steering knuckle connecting structure is a ball stud mounting bracket (6) fixed in the annular tube (1.1).

4. The in-wheel motor suspension of claim 2, wherein: the connecting structure on the vehicle body is a connecting sleeve (7) on the vehicle body, which is fixed on one side of the upper control arm (1) far away from the annular pipe (1.1).

5. The in-wheel motor suspension of claim 1, wherein: the included angle formed by the triangular plate (2.1) and the lower control arm connecting pipe (2.2) is an obtuse angle; the shock absorber is characterized in that a lower steering knuckle connecting structure which can be connected with the steering knuckle (4) in an articulated mode is arranged on the triangular plate (2.1), one side, far away from the triangular plate (2.1), of the lower control arm connecting pipe (2.2) is connected with a lower vehicle body connecting structure which can be connected with the vehicle body in an articulated mode, the connecting pipe comprises a first connecting pipe (2.3) and a second connecting pipe (2.4), the first connecting pipe is connected between the middle portions of the lower control arm connecting pipe (2.2), the second connecting pipe is connected between the sides of the triangular plate (2.1) and is connected with the lower control arm connecting pipe (2.2), and the shock absorber lower support (5) is arranged on the first connecting pipe (2.3).

6. The in-wheel motor suspension of claim 5, wherein: the lower steering knuckle connecting structure comprises a through hole formed in the triangular plate (2.1) and a ball pin lower mounting support (8) fixed in the through hole.

7. The in-wheel motor suspension of claim 5, wherein: the lower connecting structure of the automobile body is a lower connecting sleeve (9) of the automobile body, wherein the lower connecting pipe (2.2) of the automobile body is fixed to one side, far away from the triangular plate (2.1), of the lower control arm.

8. The in-wheel motor suspension of claim 5, wherein: the lower support (5) of the shock absorber comprises two lug plates which are vertically fixed in the middle of the surface of the first connecting pipe (2.3) and are opposite.

9. The utility model provides a wheel hub motor suspension's automobile body connection structure, includes knuckle (4) and automobile body support (10), its characterized in that: the suspension of the in-wheel motor further comprises a steering knuckle connecting structure on one side of the upper control arm (1) and a steering knuckle connecting structure on one side of the lower control arm (2) which are hinged to the upper portion and the lower portion of the steering knuckle (4), a vehicle body connecting structure on the other side of the upper control arm (1) and a vehicle body connecting structure on the other side of the lower control arm (2) are hinged to the upper portion and the lower portion of the vehicle body support (10) respectively, the lower portion of the spring damper (3) is hinged to the damper lower support (5), and the upper portion of the spring damper is hinged to the vehicle body support (10).

10. The in-wheel motor suspension body attachment structure according to claim 9, wherein: a ball pin (11) is arranged in each of the steering knuckle connecting structure on one side of the upper control arm (1) and the steering knuckle connecting structure on one side of the lower control arm (2), and the two ball pins (11) are respectively hinged to the upper part and the lower part of the steering knuckle (4); the left side and the right side of the upper part of the vehicle body support (10) are respectively provided with an upper control arm connecting support (12), the vehicle body connecting structure at the other side of the upper control arm (1) is hinged to the upper control arm connecting support (12) through a pin shaft (13), the left side and the right side of the lower part of the vehicle body support (10) are respectively provided with a lower control arm connecting support (14), and the vehicle body connecting structure at the other side of the lower control arm (2) is hinged to the lower control arm connecting support (14) through the pin shaft (13); an upper shock absorber support (15) is fixed in the center of the top of the vehicle body support (10), the lower portion of the spring shock absorber (3) is hinged to the lower shock absorber support (5) through a pin shaft (13), and the upper portion of the spring shock absorber (3) is hinged to the upper shock absorber support (15) through the pin shaft (13).

Technical Field

The invention relates to the technical field of new energy automobile structures, in particular to a hub motor suspension and an automobile body connecting structure thereof.

Background

In the new energy automobile field, in-wheel motor is widely used as a new construction, and the motor suspension intensity that designs based on in-wheel motor at present is generally not high, and can't realize the lightweight, and stability is not enough. The invention patent CN201711235812.4 discloses a suspension system in an all-directional steering wheel-side steering suspension mechanism, which comprises an upper control arm and a lower control arm, wherein the upper control arm and the lower control arm are both rod-shaped structures, the bearing capacity of the whole suspension is limited, and the bearing requirements of A-class vehicles and above vehicle types cannot be met.

Disclosure of Invention

The invention aims to solve the defects of the background technology and provide a hub motor suspension with high structural strength and good light weight and a vehicle body connecting structure thereof.

In order to achieve the purpose, the invention designs a wheel hub motor suspension which comprises an upper control arm, a lower control arm and a spring shock absorber, and is characterized in that: a steering knuckle connecting structure which can be hinged with a steering knuckle is arranged on one side of the upper control arm and one side of the lower control arm, a vehicle body connecting structure which can be hinged with a vehicle body is arranged on the other side of the upper control arm and the other side of the lower control arm, and a shock absorber lower support which is hinged with a spring shock absorber is arranged on the lower control arm; the upper control arm comprises an annular tube (the section of which is rectangular) with a hollow inner part and an upper control arm connecting tube (specifically, the upper control arm connecting tube is divided into an upper part and a lower part along the transverse direction and is punched into the upper part and the lower part, and the upper part and the lower part are spliced and then welded together to form the hollow upper control arm, so that the process is simple and reliable); the lower control arm comprises a hollow triangular plate and a hollow lower control arm connecting pipe, wherein the hollow triangular plate and the hollow lower control arm connecting pipe are fixedly connected to the left side and the right side of the triangular plate respectively, and the triangular plate is of an integrated structure and is hollow inside.

Furthermore, an included angle formed by the annular pipe and the upper control arm connecting pipe is an obtuse angle; the annular pipe is provided with a connecting structure on the steering knuckle, wherein the connecting structure can be connected with the steering knuckle in a hinged mode, and one side, far away from the annular pipe, of the upper control arm connecting pipe is connected with a connecting structure on the vehicle body, wherein the connecting structure can be connected with the vehicle body in a hinged mode.

Furthermore, the upper steering knuckle connecting structure is a ball stud mounting bracket fixed in the annular tube.

Furthermore, the connecting structure on the vehicle body is a connecting sleeve on the vehicle body, which is fixed on one side of the upper control arm, which is far away from the annular pipe.

Furthermore, an included angle formed by the triangular plate and the lower control arm connecting pipe is an obtuse angle; the shock absorber connecting structure is characterized in that a lower steering knuckle connecting structure which can be hinged with the steering knuckle is arranged on the triangular plate, one side, far away from the triangular plate, of the lower control arm connecting pipe is connected with a lower vehicle body connecting structure which can be hinged with the vehicle body, the connecting pipe comprises a first connecting pipe which is connected between the middle parts of the lower control arm connecting pipe and a second connecting pipe which is connected between the lower control arm connecting pipe and the side, far away from the triangular plate, of the lower control arm connecting pipe, and the shock absorber lower support is arranged on the first connecting pipe.

Furthermore, the lower steering knuckle connecting structure comprises a through hole formed in the triangular plate and a ball stud lower mounting bracket fixed in the through hole.

Furthermore, the lower vehicle body connecting structure is a lower vehicle body connecting sleeve fixed on one side, far away from the triangular plate, of the lower control arm connecting pipe.

Furthermore, the lower bracket of the shock absorber comprises two lug plates which are vertically fixed in the middle of the surface of the first connecting pipe and are opposite to each other.

The vehicle body connecting structure of the hub motor suspension comprises a steering knuckle, a vehicle body support and the hub motor suspension, wherein the steering knuckle connecting structure on one side of an upper control arm and the steering knuckle connecting structure on one side of a lower control arm are hinged to the upper portion and the lower portion of the steering knuckle, the vehicle body connecting structure on the other side of the upper control arm and the vehicle body connecting structure on the other side of the lower control arm are hinged to the upper portion and the lower portion of the vehicle body support respectively, the lower portion of a spring shock absorber is hinged to the shock absorber lower support, and the upper portion of the spring shock absorber is hinged to the vehicle body support.

Furthermore, a ball pin is arranged in each of the steering knuckle connecting structure on one side of the upper control arm and the steering knuckle connecting structure on one side of the lower control arm, and the two ball pins are respectively hinged to the upper part and the lower part of the steering knuckle; the left side and the right side of the upper part of the vehicle body support are respectively provided with an upper control arm connecting support, a vehicle body connecting structure at the other side of the upper control arm is hinged to the upper control arm connecting support through a pin shaft, the left side and the right side of the lower part of the vehicle body support are respectively provided with a lower control arm connecting support, and a vehicle body connecting structure at the other side of the lower control arm is hinged to the lower control arm connecting support through a pin shaft; the shock absorber upper support is fixed in the center of the top of the vehicle body support, the lower portion of the spring shock absorber is hinged to the shock absorber lower support through a pin shaft, and the upper portion of the spring shock absorber is hinged to the shock absorber upper support through a pin shaft.

The invention has the beneficial effects that: through optimizing the control arm structure of suspension, the control arm cross-section adopts hollow rectangle structure, has improved the bearing capacity greatly. In addition, the structural form of the control arm adopts an A shape, and magnesium-aluminum alloy can be selected as a material, so that the light weight of the whole suspension system is ensured, and the mass of a wheel end and the mass under a spring are reduced, so that the direct impact from uneven ground to a tire is reduced, the impact on the suspension system can be reduced due to the reduction of the impact, the uncomfortable feeling of passengers can be reduced, and the smoothness and the comfort of the passengers are improved.

Drawings

FIG. 1 is a perspective view of the connection of a wheel hub motor suspension to a vehicle body and a wheel hub motor in the present invention;

FIG. 2 is a front view of the hub motor suspension in connection with the vehicle body and the hub motor of the present invention;

FIG. 3 is a top view of the in-wheel motor suspension in connection with the vehicle body and the in-wheel motor of the present invention;

FIG. 4 is a front view of the tire according to the invention attached to FIG. 3;

FIG. 5 is a top view of the upper control arm of the present invention;

FIG. 6 is a front view of the upper control arm of the present invention;

FIG. 7 is a top view of the lower control arm of the present invention;

FIG. 8 is a front view of the lower control arm of the present invention;

the automobile comprises 1-an upper control arm (1.1-a ring pipe, 1.2-an upper control arm connecting pipe), 2-a lower control arm (2.1-a triangle, 2.2-a lower control arm connecting pipe, 2.3-a first connecting pipe, 2.4-a second connecting pipe), 3-a spring damper, 4-a steering knuckle, 5-a damper lower support, 6-a ball stud upper mounting support, 7-an automobile body upper connecting sleeve, 8-a ball stud lower mounting support, 9-an automobile body lower connecting sleeve, 10-an automobile body support, 11-a ball stud, 12-an upper control arm connecting support, 13-a pin shaft, 14-a lower control arm connecting support, 15-a damper upper support, 16-a hub motor, 17-a tire and 18-a steering pull rod.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The in-wheel motor suspension shown in fig. 1-8 comprises an upper control arm 1, a lower control arm 2 and a spring damper 3.

Go up control arm 1 including inside hollow annular tube 1.1 and fixed connection in annular tube 1.1 left and right sides, with annular tube 1.1 structure as an organic whole and inside hollow last control arm connecting pipe 1.2, the annular tube 1.1 and last control arm connecting pipe 1.2 become the contained angle and be the obtuse angle. Be equipped with on the ring pipe 1.1 can with knuckle 4 articulated connection's knuckle connection structure: and a bracket 6 is arranged on the ball stud fixed in the annular tube 1.1. One side of the upper control arm connecting pipe 1.2 far away from the annular pipe 1.1 is connected with a connecting structure on the vehicle body which can be connected with the vehicle body in a hinged mode: and a connecting sleeve 7 fixed on the vehicle body at one side of the upper control arm 1 far away from the annular pipe 1.1.

Lower control arm 2 includes inside hollow set-square 2.1 and fixed connection in the set-square 2.1 left and right sides, with set-square 2.1 structure as an organic whole and inside hollow lower control arm connecting pipe 2.2, set-square 2.1 is the obtuse angle with the contained angle that becomes of lower control arm connecting pipe 2.2, the inside hollow connecting pipe of fixed connection between lower control arm connecting pipe 2.2, the connecting pipe is including connecting first connecting pipe 2.3 between lower control arm connecting pipe 2.2 middle part and connecting and keeping away from second connecting pipe 2.4 between set-square 2.1 one side in lower control arm connecting pipe 2.2, be equipped with shock absorber lower carriage 5 on first connecting pipe 2.3. The lower support 5 of the shock absorber comprises two lug plates which are vertically fixed in the middle of the surface of the first connecting pipe 2.3 and are opposite. Be equipped with on the set-square 2.1 can with knuckle 4 articulated connection's under the knuckle connection structure: a through hole arranged in the triangle 2.1 and a ball head pin lower mounting bracket 8 fixed in the through hole. One side that triangle 2.1 was kept away from to control arm connecting pipe 2.2 down is connected with connection structure under the automobile body that can be connected with the automobile body is articulated: and the lower connecting sleeve 9 is fixed on the side of the lower control arm connecting pipe 2.2 far away from the triangular plate 2.1.

As shown in fig. 1 to 4, the vehicle body connection structure of the hub motor suspension comprises a steering knuckle 4, a vehicle body support 10 and the hub motor suspension, a ball stud 11 is arranged in a ball stud upper mounting support 6 in an annular tube 1.1, and a ball stud 11 is also arranged in a ball stud lower mounting support 8 of a triangular plate 2.1. And a ball stud in the ball stud mounting bracket 6 and a ball stud in the ball stud lower mounting bracket 8 are respectively hinged and connected to the upper part and the lower part of the steering knuckle 4.

The left and right sides of the upper part of the vehicle body support 10 are respectively provided with an upper control arm connecting support 12, the left and right sides of the lower part of the vehicle body support 10 are respectively provided with a lower control arm connecting support 14, and the center of the top part of the vehicle body support 10 is fixed with a shock absorber upper support 15. The vehicle body upper connecting sleeve 7 is hinged to the upper control arm connecting support 12 through a pin shaft 13, and the vehicle body lower connecting sleeve 9 is hinged to the lower control arm connecting support 14 through a pin shaft 13. The lower part of the spring damper 3 is hinged with a damper lower support 5 through a pin shaft 13, and the upper part of the spring damper 3 is hinged with a damper upper support 15 through a pin shaft 13.

According to the invention, the structure of the control arm of the suspension is optimized, and the section of the control arm adopts a hollow rectangular structure, so that the bearing capacity is greatly improved. In addition, the structural form of the control arm adopts an A shape, and magnesium-aluminum alloy can be selected as a material, so that the light weight of the whole suspension system is ensured, and the mass of a wheel end and the mass under a spring are reduced, so that the direct impact from uneven ground to a tire is reduced, the impact on the suspension system can be reduced due to the reduction of the impact, the uncomfortable feeling of passengers can be reduced, and the smoothness and the comfort of the passengers are improved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

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