CN209776143U - Automotive, powertrain mounts and torsion tie rods - Google Patents

Abstract

The utility model relates to an automobile, power assembly suspension system and antitorque pull rod, antitorque pull rod include the body of rod, first bush and second bush, set up first through-hole and second through-hole respectively at the relative both ends of the body of rod, first rubber body cladding forms first bush in the outside of first inner tube, impresses first bush in the first through-hole, and the outer wall of first rubber body attached in the inner wall of first through-hole, second rubber body cladding form the second bush in the outside of second inner tube, impresses the second bush in the second through-hole, and the outer wall of the second rubber body attached in the inner wall of first through-hole forms antitorque pull rod, therefore the outer tube has been saved to above-mentioned antitorque pull rod, and the subassembly is less, and weight is lighter.

Description

Automotive, powertrain mounts and torsion tie rods

technical field

The utility model relates to the technical field of auto parts, in particular to an automobile, a power assembly suspension system, a torsion-resistant tie rod and a stiffness design method thereof.

Background technique

At present, torsion tie rods are widely used as suspension components in the powertrain suspension system of automobiles. In the powertrain suspension system, one end of the anti-torsion tie rod is connected with the powertrain, and the other end is connected with the body or subframe.

The structure of the traditional anti-torsion tie rod is generally that both ends of the rod body are pressed into the rubber bushing, so there are many components and the weight is relatively heavy. The stiffness design of torsion tie rods is generally calculated directly through finite element analysis. Due to the complex data and heavy analysis workload, the calculation efficiency is low.

Utility model content

Based on this, it is necessary to address the above technical problems to provide a torsion tie rod with fewer components and lighter weight, and an automobile and a powertrain suspension system using the torsion tie rod; and to provide a method that can effectively improve the calculation Stiffness Design Method for Efficient Torsional Tie Rods.

A torsion tie rod comprising:

A rod body, the opposite ends of the rod body are respectively provided with a first through hole and a second through hole;

The first bushing includes a first rubber body and a first inner tube, the first rubber body covers the outside of the first inner tube, and the outer wall of the first rubber body is attached to the first channel the inner wall of the hole; and

The second bushing includes a second rubber body and a second inner tube, the second rubber body covers the outside of the second inner tube, and the outer wall of the second rubber body is attached to the first channel inner wall of the hole.

In one embodiment, the rod body is made of profiles, and the first through hole and the second through hole are formed by an extrusion process.

In one of the embodiments, the first rubber body, the rod body and the first inner tube are vulcanized into one structure, and the second rubber body is vulcanized into the second inner tube and then pressed into the inside the second through hole.

In one of the embodiments, a first weight reducing hole is opened between opposite ends of the rod body.

In one of the embodiments, the first rubber body includes a first covering part, a second covering part and a connecting part integrally formed, and the first covering part covers the inner wall of the first through hole Above, the second cladding part is clad on the outer wall of the inner tube, and the connecting part connects the first cladding part and the second cladding part.

In one of the embodiments, the first covering part protrudes toward the direction close to the second covering part to form a first protrusion; and/or

A second protrusion is formed on the second covering part protruding toward a direction close to the first covering part.

In one of the embodiments, the first inner tube includes an integrally formed tube hole and a reinforcing part, the tube hole of the first inner tube is opened on the tube hole, and the reinforcing part is used to increase the Describe the strength of the first inner tube.

In one of the embodiments, the outer peripheral edge of the first inner tube is further protruded to form a protrusion.

The above-mentioned anti-torsion tie rod has at least the following advantages:

A first through hole and a second through hole are respectively set at opposite ends of the rod body, the first rubber body is coated on the outside of the first inner tube to form a first bush, and the first bush is pressed into the first through hole, And the outer wall of the first rubber body is attached to the inner wall of the first through hole, the second rubber body covers the outer side of the second inner tube to form a second bushing, and presses the second bushing into the second through hole , and the outer wall of the second rubber body is attached to the inner wall of the first through hole to form a torsion-resistant tie rod, so the above-mentioned torsion-resistant tie rod saves the outer tube, has fewer components and is lighter in weight.

A powertrain suspension system, comprising a powertrain, the torsion-resistant tie rod as described in any one of the above items, and a vehicle body or frame, one end of the rod body provided with a first through hole is connected to the powertrain, so One end of the rod body provided with the second through hole is connected with the vehicle body or the vehicle frame.

An automobile, comprising the torsion-resistant tie rod as described in any one of the above or the powertrain suspension system as described above.

The above-mentioned vehicle and powertrain suspension system also has the advantages of fewer components and lighter weight due to the application of the above-mentioned torsion-resistant tie rod.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a torsion-resistant tie rod in an embodiment;

Fig. 2 is a front view of the torsion-resistant tie rod shown in Fig. 1;

Fig. 3 is a top view of the torsion-resistant tie rod shown in Fig. 1;

Fig. 4 is a sectional view along line A-A in Fig. 3;

Fig. 5 is a cross-sectional view of a torsion tie rod in another embodiment;

FIG. 6 is another cross-sectional view of the torsion-resistant tie rod shown in FIG. 5 .

Detailed ways

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below .

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model. The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

Please refer to FIG. 1 to FIG. 4 , the torsion tie rod 10 in one embodiment has the advantages of less components and lighter weight compared with the traditional torsion tie rod. Specifically, the anti-torsion tie rod 10 in this embodiment includes a rod body 100 , a first bush 200 and a second bush 300 .

A first through hole 110 and a second through hole 120 are respectively defined at opposite ends of the rod body 100 . In the embodiment shown in FIG. 1 , the axis of the first through hole 110 is parallel to the axis of the second through hole 120 . Specifically, the rod body 100 can be made of profiles, and the first through hole 110 and the second through hole 120 are formed by an extrusion process, so the production cycle can be further shortened.

Certainly, referring to FIG. 5 and FIG. 6 , in another embodiment, the axis of the first through hole 110 is spatially perpendicular to the axis of the second through hole 120 . Certainly, in another embodiment, the axis of the first through hole may be neither parallel nor perpendicular to the axis of the second through hole, for example, they may be arranged at an acute angle or an obtuse angle.

A first weight-reducing hole 130 is provided between opposite ends of the rod body 100 . The first weight-reducing hole 130 can reduce the weight of the rod body 100 while ensuring the strength of the rod body 100 , thereby reducing the overall weight of the torsion-resistant tie rod 10 . For example, the number of the first lightening holes 130 is two, and the two first lightening holes 130 are spaced between opposite ends of the rod body 100 . Certainly, in other embodiments, the number of the first lightening holes 130 may be one, three, etc., as long as the weight of the rod body 100 can be reduced while ensuring the strength of the rod body 100 .

The first bushing 200 includes a first rubber body 210 and a first inner tube 220. The first rubber body 210 covers the outside of the first inner tube 220. The outer wall of the first rubber body 210 is attached to the first through hole 110. inner wall. In this embodiment, the first rubber body 210 is vulcanized into an integral structure with the rod body 100 and the first inner tube 220 . Therefore, in this embodiment, the first bush 200 omits the outer tube, which reduces the number of components and effectively reduces the weight.

For example, in this embodiment, the first through hole 110 is a non-circular hole, which can increase the volume of the first rubber body 210 and is beneficial to vibration reduction. The second through hole 120 is a circular hole, and the inner diameter of the first through hole 110 is larger than the inner diameter of the second through hole 120 .

The second bushing 300 includes a second rubber body 310 and a second inner tube 320, the second rubber body 310 covers the outside of the second inner tube 320, and the outer wall of the second rubber body 310 is attached to the first through hole 110. inner wall. In this embodiment, the second rubber body 310 and the second inner tube 320 are vulcanized into an integrated structure and pressed into the second through hole 120 . Therefore, in this embodiment, the second bush 300 omits the outer tube, which reduces the number of components and effectively reduces the weight.

In this embodiment, the outer peripheral edge of the first rubber body 210 is adapted to the shape of the inner wall of the first through hole 110 , and the hollow cylindrical tubular structure of the second rubber body 310 is adapted to the shape of the inner wall of the second through hole 120 Matched, covering the outside of the second inner tube 320.

Specifically in this embodiment, the first rubber body 210 includes an integrally formed first covering portion 211 , a second covering portion 212 and a connecting portion 213 , and the first covering portion 211 covers the inner wall of the first through hole 110 Above, the second covering part 212 covers the outer wall of the inner tube, and the connecting part 213 connects the first covering part 211 and the second covering part 212 . The connecting part 213 does not connect all the first covering part 211 and the second covering part 212 , and a certain gap needs to be left, in order to ensure the rigidity of the first rubber body 210 and further improve the durability of the first rubber body 210 . It should be pointed out that the shape corresponding to the blank space is not limited to the shape shown in the figure, and can also be other shapes under the premise of satisfying the rigidity.

Specifically, in this embodiment, the first covering portion 211 protrudes toward the direction close to the second covering portion 212 to form a first protrusion 214 . And/or the second covering portion 212 protrudes toward the direction close to the first covering portion 211 to form a second protrusion 215 . The design of the first protrusion 214 and the second protrusion 215 is beneficial to further increase the volume of the first rubber body 210, thereby further improving the vibration damping capability.

Specifically in this embodiment, the first inner tube 220 includes an integrally formed tube hole 221 and a reinforced part 222. The tube hole of the first inner tube 220 is opened on the tube hole 221, and the reinforced part 222 is used to increase the strength of the first inner tube. The strength of the tube 220 . The design of the first inner tube 220 to this structure is beneficial to increase the contact area between the first rubber body 210 and the first inner tube 220 on the one hand, and to improve the vibration damping ability; strength, preventing the first inner tube 220 from breaking.

Further, a second weight-reducing hole 223 is opened on the reinforcement part 222, and the second weight-reducing hole 223 is beneficial to reduce the weight of the first inner tube 220 on the premise of ensuring the strength of the first inner tube 220, thereby reducing the weight of the first inner tube 220. The overall weight of the torsion tie rod 10. For example, in this embodiment, the number of the second weight reducing holes 223 may be four, and the four second weight reducing holes 223 are distributed in an array. Of course, in other embodiments, the number of second lightening holes 223 can also be one, two, three, five, etc., as long as the strength of the first inner tube 220 can be reduced while ensuring the strength of the first inner tube 220. The purpose of the weight of the tube 220 is sufficient.

Further, the outer peripheral edge of the first inner tube 220 is protrudingly formed with a convex portion 224, the convex portion 224 is used to further increase the contact area between the first inner tube 220 and the first rubber body 210, and improve the contact area between the first inner tube 220 and the first rubber body. The strength of the rubber body 210 after matching increases the vibration damping ability. For example, in this embodiment, two protrusions 224 may be protrudingly formed on the tube hole 221 , and the two protrusions 224 are located at the periphery of the tube hole 221 at intervals. Two protrusions 224 may also protrude from the reinforcement part 222 , and the two protrusions 224 are lowered to be located at the periphery of the reinforcement part 222 .

The above-mentioned anti-torsion tie rod 10 has at least the following advantages:

A first through-hole 110 and a second through-hole 120 are opened at the opposite ends of the rod body 100 respectively. The first rubber body 210 is coated on the outside of the first inner tube 220 to form a first bushing 200 , and the first bushing 200 is pressed. into the first through hole 110, and the outer wall of the first rubber body 210 is attached to the inner wall of the first through hole 110, and the second rubber body 310 covers the outer side of the second inner tube 320 to form the second bushing 300 , the second bushing 300 is pressed into the second through hole 120, and the outer wall of the second rubber body 310 is attached to the inner wall of the first through hole 110 to form the torsion-resistant tie rod 10, so the above-mentioned torsion-resistant tie rod 10 omits the outer tube, with fewer components and less weight.

The utility model also provides a power assembly suspension system, including the power assembly, the torsion-resistant pull rod 10 as described above, and the vehicle body or vehicle frame. One end of the rod body 100 provided with a first through hole 110 is connected to the power assembly. One end of the rod body 100 provided with the second through hole 120 is connected with the vehicle body or the vehicle frame. The vibration of the powertrain is isolated by the first rubber body 210 and transmitted to the rod body 100 , and then the vibration of the rod body 100 is transmitted to the vehicle body or frame after being isolated by the second rubber body 310 . The powertrain mount system described above also has the advantage of fewer components and lighter weight.

The utility model also provides an automobile, comprising the above-mentioned torsion-resistant tie rod 10 or the above-mentioned powertrain suspension system. The aforementioned car also has the advantage of fewer components and lighter weight.

The utility model also provides a method for designing the stiffness of a torsion-resistant tie rod, which includes the following steps:

Step S110 , wrapping the first rubber body 210 on the outer side of the first inner tube 220 to form the first bushing 200 .

Step S120 , wrapping the second rubber body 310 on the outside of the second inner tube 320 to form the second bushing 300 . It should be noted that the relative order between step S110 and step S120 can also be exchanged.

Step S130 , acquiring stiffness values in all directions of the first bush 200 and the second bush 300 . Wherein, the stiffness values in each direction of the first bush 200 are kx ₁ , ky ₁ , kz ₁ , kα ₁ , kβ ₁ respectively, and the stiffness values in each direction of the second bush 300 are kx ₂ , ky ₂ , kz ₂ , kα ₂ , kβ ₂ . The values of stiffness in all directions of the first bush 200 and the second bush 300 can be obtained by simple formula calculation, stiffness test, finite element calculation and other methods.

Step S140, setting the center horizontal distance L and height distance H between the first bush 200 and the second bush 300, the center horizontal distance L is the level between the axis of the first inner tube 220 and the axis of the second inner tube 320 Distance, Height The distance H is the height distance between the center of the first inner tube 220 and the center of the second inner tube 320 . The center distance between the first bush 200 and the second bush 300 is generally related to the layout of the vehicle, and the horizontal distance between the centers of the first bush 200 and the second bush 300 may be different for different models.

Step S150 , opening a first through hole 110 and a second through hole 120 on the rod body 100 according to the center horizontal distance L. Specifically, the rod body 100 is made of a profile, and the first through hole 110 and the second through hole 120 are formed through a profile extrusion process, further shortening the manufacturing cycle.

Step S160, pressing the first bushing 200 into the first through hole 110, the outer wall of the first rubber body 210 is attached to the inner wall of the first through hole 110, and pressing the second bushing 300 into the second through hole 120 , the outer wall of the second rubber body 310 is attached to the inner wall of the first through hole 110 to form the torsion-resistant tie rod 10 . In this embodiment, the first rubber body 210, the first inner tube 220 and the rod body 100 can be vulcanized into an integral structure by vulcanization, and the second rubber body 310 and the second inner tube 320 can be vulcanized into an integrated structure and then pressed. into the second through hole 120.

Step S170 , calculating the overall stiffness value of the torsional tie rod 10 . The calculation formula is:

X-direction stiffness value:

Y direction stiffness value:

Z direction stiffness value:

If the overall stiffness value of the torsion-resistant tie rod 10 satisfies the stiffness design requirements, the structure of the torsion-resistant tie rod 10 is determined.

If the overall stiffness value of the torsion tie rod 10 does not meet the stiffness design requirements, then according to the structural size of the first rubber body 210 of the first bushing 200 and the hardness of the rubber material used, the structural size of the second rubber body 310 of the second bushing 300 and the hardness of the rubber material used are adjusted until the overall stiffness value of the torsion-resistant tie rod 10 meets the stiffness design requirements.

Since both the first bush 200 and the second bush 300 omit the outer tube, the number of components of the torsional tie rod 10 is relatively small. When obtaining the stiffness values of the first bush 200 and the second bush 300, analyze The workload is smaller, thereby effectively improving computing efficiency. Moreover, the stiffness design method of the above-mentioned torsion tie rod 10 does not directly calculate the overall stiffness value of the torsion tie rod 10 through the finite element analysis method, so it can avoid the defect of heavy analysis workload and effectively improve work efficiency.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be interpreted as a limitation on the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. A torsion-resistant tie rod, characterized in that, comprising: A rod body, the opposite ends of the rod body are respectively provided with a first through hole and a second through hole; The first bushing includes a first rubber body and a first inner tube, the first rubber body covers the outside of the first inner tube, and the outer wall of the first rubber body is attached to the first channel the inner wall of the hole; and The second bushing includes a second rubber body and a second inner tube, the second rubber body covers the outside of the second inner tube, and the outer wall of the second rubber body is attached to the first channel inner wall of the hole. 2. The anti-torsion tie rod according to claim 1, characterized in that, the rod body is made of profiles, and the first through hole and the second through hole are formed by an extrusion process. 3. The anti-torsion tie rod according to claim 2, characterized in that, the first rubber body, the rod body and the first inner tube are vulcanized into one structure, and the second rubber body and the second The inner tube is vulcanized into an integrated structure and pressed into the second through hole. 4. The anti-torsion tie rod according to claim 1, characterized in that, a first weight reducing hole is opened between opposite ends of the rod body. 5. The anti-torsion tie rod according to any one of claims 1 to 4, characterized in that, the first rubber body includes a first covering part, a second covering part and a connecting part integrally formed, and the first covering part A cladding part is clad on the inner wall of the first through hole, the second cladding part is clad on the outer wall of the inner tube, and the connecting part connects the first cladding part and the second cladding part. cladding department. 6. The torsion-resistant tie rod according to claim 5, characterized in that, the first covering part protrudes toward the direction close to the second covering part to form a first protrusion; and/or A second protrusion is formed on the second covering part protruding toward a direction close to the first covering part. 7. The torsion-resistant tie rod according to any one of claims 1 to 4, characterized in that, the first inner tube includes an integrally formed tube hole and a reinforcing part, and the tube hole of the first inner tube is opened in On the tube hole part, the reinforcing part is used to increase the strength of the first inner tube. 8 . The torsion-resistant tie rod according to any one of claims 1 to 4 , characterized in that, a convex portion protrudes from the outer peripheral edge of the first inner tube. 8 . 9. A powertrain suspension system, characterized in that it comprises a powertrain, the torsion-resistant tie rod as claimed in any one of claims 1 to 8, and a vehicle body or frame, and the rod body is provided with a first through hole One end of the rod body is connected with the power assembly, and one end of the rod body provided with a second through hole is connected with the vehicle body or frame. 10. An automobile, characterized by comprising the torsion tie rod according to any one of claims 1 to 8 or the powertrain suspension system according to claim 9.