CN213920653U - Prevent turning round engine side support and vehicle of pull rod suspension - Google Patents

Abstract

The utility model discloses a prevent turning round engine side support of pull rod suspension, it includes support subject and microcephaly bush, be equipped with the bolt hole in the microcephaly bush, the bolt hole can with prevent turning round major part bush support of pull rod suspension and pass through bolted connection. The engine side support further comprises a radial spherical plain bearing, the radial spherical plain bearing comprises an outer ring and an inner ring, the inner ring and the outer ring are connected through a friction pair to allow the inner ring to rotate relative to the outer ring and limit the radial movement of the inner ring relative to the outer ring, the outer ring is fixed on the support body, and the small-end bushing is in interference fit in the inner ring. The utility model discloses still relate to the vehicle including this engine side support.

Description

Prevent turning round engine side support and vehicle of pull rod suspension

Technical Field

The utility model relates to a spare part in the vehicle field especially relates to an engine collateral branch frame of preventing turning round pull rod suspension and vehicle including this engine collateral branch frame.

Background

The suspension is used as an important part for connecting the engine and the vehicle body, and is divided into three-point type and four-point type according to different arrangement forms, wherein the suspension is used for providing support and isolating vibration. The three-point suspension saves space and is easy to assemble, so the three-point suspension is widely applied to the car market. The three-point suspension mainly comprises a left suspension single body, a right suspension single body and a rear anti-twist pull rod suspension single body.

The rear torsion-proof pull rod suspension generally adopts a large end and small end structure, a main spring of a large end (big head) is connected with a vehicle body (or an auxiliary vehicle frame) and mainly plays a role in vibration isolation, and the small end (small head) is usually connected with an engine bracket through a bolt. In the analysis model, the rigidity of the torsion-proof pull rod suspension can be simplified into a group of equivalent rigidities comprising three directions of an X axis, a Y axis and a Z axis (a whole vehicle coordinate system). The vehicle has complex working conditions, is influenced by road jolt and self excitation of the power assembly, and has larger position change of the power assembly. When the displacement of the engine is large, the generated lateral or torsional force extrudes the rubber main spring, so that the equivalent stiffness of the rear torsion-proof pull rod suspension in the Y-axis direction and the Z-axis direction is obviously increased, and the stiffness in the X-axis direction is driven to be increased, so that the vibration isolation performance of the rear torsion-proof pull rod suspension is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a novel engine side bracket with torsion-proof pull rod suspension and a vehicle including the same, so as to effectively solve or alleviate at least one of the problems existing at present.

An aspect of the embodiment of the utility model relates to an engine side support of torsion-proof pull rod suspension, it includes support subject and microcephaly bush, be equipped with the bolt hole in the microcephaly bush, the bolt hole can with the major part bush support of torsion-proof pull rod suspension passes through bolted connection, and it further includes radial spherical plain bearing, radial spherical plain bearing includes outer lane and inner circle, the inner circle with the outer lane passes through the vice connection of friction, in order to allow the inner circle for the outer lane rotates, and the restriction the inner circle for the radial motion of outer lane, the outer lane is fixed in the support subject, microcephaly bush interference fit is in the inner circle.

In according to the embodiment of the utility model provides a in, optionally, under whole car coordinate system, the engine passes through in ascending power of X axle direction and displacement the support main part transmit to radial spherical plain bearing the outer lane, and pass through the inner circle transmit to microcephaly bush and with the part that microcephaly bush links to each other, drive as the engine the support main part is around Y axle or when taking place to rotate around Z axle, the outer lane is followed the support main part rotates, the inner circle for the outer lane takes place to deflect, in order to reduce the microcephaly bush is followed the displacement that the support main part produced.

In the embodiment of the present invention, optionally, the inner side of the outer ring and the outer side of the inner ring have a sintered layer.

In the embodiment of the present invention, optionally, the engine side bracket may be connected to the main spring through a main spring connecting rod.

Another aspect of the embodiments of the present invention relates to a vehicle comprising an anti-twist tie-bar mounted engine side bracket according to any of the previous embodiments.

Drawings

Exemplary embodiments of the invention are illustrated in the following drawings, in which like elements are referred to by like reference numerals, and in which:

fig. 1 is an exploded perspective view of an engine side bracket with an anti-twist tie bar suspension according to an embodiment of the present invention;

FIG. 2 is an exploded perspective view of a radial spherical plain bearing in the engine side bracket shown in FIG. 1; and

fig. 3 is an assembly view of the engine side bracket and the main spring shown in fig. 1.

Detailed Description

Some embodiments of the invention will be described in more detail below with reference to the accompanying drawings. Unless clearly defined otherwise herein, the meaning of scientific and technical terms used herein is that which is commonly understood by one of ordinary skill in the art.

The use of "including," "comprising," or "having" and similar referents herein is to be construed to mean that the specified items are included in the range, as well as equivalents thereof. The terms "or", "or" are not meant to be exclusive, but rather denote the presence of at least one of the referenced items and include the cases where a combination of the referenced items may be present. The term "and/or" includes any and all combinations of one or more of the referenced items. References herein to "some embodiments" or the like, indicate that a particular element (e.g., feature, structure, and/or characteristic) described in connection with the invention is included in at least one embodiment described herein, and may or may not be present in other embodiments. In addition, it is to be understood that the elements of the invention may be combined in any suitable manner.

In the working process of the engine, the rigidity of the torsion-proof pull rod suspension in the X-axis direction is mainly used for controlling the displacement of the engine in the front-back direction and the swinging around the Y-axis direction, and the displacement envelope of the engine is controlled within a reasonable range. Therefore, in early suspension design, design requirements are generally only provided for rigidity in the X-axis direction, and no requirements are provided for rigidity in the Y-axis direction and the Z-axis direction. However, analysis and research show that the equivalent rigidity in the Y-axis direction and the Z-axis direction is reduced, so that the vibration isolation performance of the torsion-proof pull rod suspension can be effectively improved. The embodiment of the utility model provides a prevent turning round engine side support of pull rod suspension suitable for among pendulum formula three point suspension. The support main body can be consistent with the traditional engine support main body connected with the anti-torsion pull rod suspension, but a radial spherical plain bearing with a small bushing is added at the joint of the support main body and the anti-torsion pull rod suspension large-end support. Because the inner ring of the radial spherical plain bearing can rotate in the outer ring, the rotational freedom of the engine side bracket around the Y axis and the Z axis can be released through the rotation of the bearing, thereby reducing the displacement change of the torsion-proof pull rod suspension, reducing the equivalent rigidity in the Y axis direction and the Z axis direction and improving the vibration isolation performance of the torsion-proof pull rod suspension. The X-axis, Y-axis and Z-axis are referred to herein as the X-axis, Y-axis and Z-axis in the finished vehicle coordinate system.

As shown in fig. 1-3, an exemplary torsion-bar-proof engine side bracket 10 includes a bracket body 11, a small-end bushing 12, and a radial spherical plain bearing 13. The small-end bushing 12 is internally provided with a bolt hole 120, and the bolt hole 120 can be connected with a large-end bushing bracket suspended by the torsion-proof pull rod through a bolt. The spherical plain radial bearing 13 includes an outer ring 131 and an inner ring 132, and the inner ring 132 is connected to the outer ring 131 by a friction pair to allow the inner ring 132 to rotate relative to the outer ring 131 at a certain angle and restrict the radial movement of the inner ring 132 relative to the outer ring 131. The outer race 131 is fixed to the carrier body 11 to move with the carrier body 11, and the small-end bush 13 is interference-fitted in the inner race 132, for example, interference-fitted in the inner race 132 by a press machine.

In some embodiments, the inner side of the outer ring 131 and the outer side of the inner ring 132 of the radial spherical plain bearing 13 have sintered layers, so that the bearing capacity is high, the wear resistance is good, the inner ring 132 and the outer ring 131 can be rigidly matched and can swing within a certain angle to form a kinematic friction pair, and the axial play of the kinematic friction pair is limited. In addition, the structural form and/or size of the outer ring and the inner ring of the radial spherical plain bearing 13 can be adjusted to meet the structural form of different big-end bush brackets and different power assembly configurations, and the abnormal sound problem caused by part motion interference is avoided.

As shown in fig. 3, the main spring 31 and the engine-side bracket 10 may be connected by a main spring link 20. Because the outer ring 131 of the radial spherical plain bearing 13 is fixedly connected with the bracket body 11, the small-end bushing 12 is pressed into the inner ring 132, and the inner ring 132 is connected with the outer ring 131 through a friction pair, so that the inner ring 132 is allowed to rotate in the outer ring 131 at a certain angle, and the radial movement of the inner ring 132 can be limited. When the engine drives the bracket main body 11 of the engine side bracket 10 to twist within a certain angle around the Y axis or around the Z axis, the outer ring 131 of the radial spherical plain bearing 13 rotates along with the engine, and a certain angle of deflection occurs between the inner ring 132 and the outer ring 131, so that the small-head bushing 12 is reduced along with the displacement of the bracket main body 11, the lateral force or the twisting force of the suspended large-head bushing from the main spring connecting rod 20 is reduced along with the displacement of the bracket main body, and the equivalent stiffness of the torsion-proof pull rod in the Y axis direction and the Z axis direction is effectively reduced. In the X-axis direction, the radial spherical plain bearing 13 can ensure radial force transmission. When the force and displacement of the engine in the X-axis direction are transmitted to the outer ring 131 of the radial spherical plain bearing 13 through the bracket body 11, the outer ring 131 and the inner ring 132 are subjected to radial force, and the transmission to the suspension main spring 31 is not affected. Therefore, the rigidity requirement of the torsion-proof pull rod suspension in the X-axis direction can be met.

Another aspect of the embodiments of the present invention relates to a vehicle including the above-described engine side bracket.

The radial spherical plain bearing with the small-head bushing is additionally arranged on the engine side support, the rotational freedom degrees of the suspension small end in the Y-axis direction and the Z-axis direction are released, the equivalent rigidity in the Y-axis direction and the Z-axis direction can be effectively reduced, the vibration isolation performance of the torsion-proof pull rod suspension is improved, the better automobile vibration noise performance is obtained, the structure is simple, and the cost is lower.

The foregoing specific embodiments are provided so that this disclosure will be thorough and complete, and will not be limited to these specific embodiments. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit of the invention.

Claims (5)

1. The utility model provides an engine side support of torsion-proof pull rod suspension, its includes support subject and microcephaly bush, be equipped with the bolt hole in the microcephaly bush, the bolt hole can with the major part bush support of torsion-proof pull rod suspension passes through bolted connection, its characterized in that, it further includes radial spherical plain bearing, radial spherical plain bearing includes outer lane and inner circle, the inner circle with the outer lane passes through the vice connection of friction, in order to allow the inner circle for the outer lane rotates, and the restriction the inner circle for the radial motion of outer lane, the outer lane is fixed in the support subject, microcephaly bush interference fit is in the inner circle.

2. The torsion-proof pull rod suspended engine side bracket according to claim 1, wherein under a whole vehicle coordinate system, force and displacement of an engine in an X-axis direction are transmitted to the outer ring of the radial spherical plain bearing through the bracket main body and transmitted to the small-end bushing and a component connected with the small-end bushing through the inner ring, when the engine drives the bracket main body to rotate around a Y-axis or a Z-axis, the outer ring rotates along with the bracket main body, and the inner ring deflects relative to the outer ring to reduce displacement of the small-end bushing along with the bracket main body.

3. The torsion brace suspending engine side bracket of claim 1 wherein the inner side of the outer ring and the outer side of the inner ring have a sintered layer.

4. The torsion bar proof hitch mounted engine side bracket of claim 1, wherein said engine side bracket is connectable to a main spring by a main spring link.

5. A vehicle, characterized in that it comprises an anti-twist tie-rod suspended engine-side bracket according to any one of claims 1-4.

Images