Suspension control arm, suspension system and vehicle

Abstract

The utility model relates to a suspension control arm, a suspension system and a vehicle. One end of the suspension control arm is a bushing clamping part (2), the other end of the suspension control arm is a bushing press-fitting part (3), the bushing clamping part is provided with a weakening structure (4), and the weakening structure is configured to induce the suspension control arm to deform at the position of the weakening structure when bearing a lateral impact load. According to the technical scheme, the suspension control arm can be induced to generate local instability deformation at the bushing clamping part, and displacement deformation caused by the local instability deformation is smaller, so that when the suspension control arm is subjected to lateral impact load, the suspension control arm can be perceived by a user due to the first deformation, and the deformation of the suspension control arm is reduced. And meanwhile, the local small displacement deformation cannot generate adverse effects on other parts connected and matched with the displacement deformation.

Description

Technical Field

[0001] The present disclosure relates to the technical field of suspension systems, and in particular to a suspension control arm, a suspension system and a vehicle. Background Art

[0002] The control arm is a key component of the suspension system. When a lateral impact load occurs, the control arm is the first to deform due to buckling instability, allowing users to notice it before the suspension system is seriously damaged. Therefore, whether the control arm design is reasonable will affect the safety performance of the vehicle operation. In related technologies, buckling failure usually occurs in the middle of the control arm, accompanied by obvious overall structural instability, that is, the control arm undergoes a large displacement deformation in a short period of time. This structural design of the control arm makes it easy to cause damage to other components connected to it when the control arm is buckled and unstable, such as damage to other connecting rod structures in the multi-link suspension system. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a suspension control arm, a suspension system and a vehicle.

[0004] According to a first aspect of an embodiment of the present disclosure, a suspension control arm is provided, wherein one end of the suspension control arm is a bushing clamping portion, and the other end is a bushing pressing portion, wherein the bushing clamping portion is provided with a weakening structure, and wherein the weakening structure is configured to induce the suspension control arm to deform at the position of the weakening structure when subjected to a lateral impact load.

[0005] Optionally, the suspension control arm comprises a top wall and two side walls arranged opposite to each other, wherein the weakened structure is arranged on the top wall, and the two side walls are respectively provided with reinforcing structures at positions corresponding to the weakened structure.

[0006] Optionally, the weakened structure is configured as a notch, and the notch is longitudinally extended from an end portion to a middle portion of the suspension control arm.

[0007] Optionally, the notch includes a straight line segment and an arc segment, and the straight line segment is connected between the bushing clamping portion and the arc segment.

[0008] Optionally, the ratio of the buckling load to the ultimate strength load of the suspension control arm is in the range of 1.2 to 1.4.

[0009] Optionally, the suspension control arm includes an arm body located between the bushing clamping portion and the bushing pressing portion, wherein the bushing pressing portion and the arm body have the same lateral width dimension, and the lateral width dimension of the bushing clamping portion is greater than the lateral width dimensions of the arm body and the bushing pressing portion.

[0010] Optionally, a height of a transition portion between the bushing clamping portion and the arm body and a height of a transition portion between the bushing press-fitting portion and the arm body are both higher than a height of the arm body.

[0011] Optionally, the suspension control arm is an integrated structure formed by forging.

[0012] According to a second aspect of an embodiment of the present disclosure, there is provided a suspension system comprising any one of the above-mentioned suspension control arms.

[0013] Optionally, the suspension system is a multi-link suspension system.

[0014] According to a third aspect of an embodiment of the present disclosure, a vehicle is provided, comprising the above-mentioned suspension system.

[0015] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the suspension control arm provided by the present disclosure is provided with a weakening structure at the bushing clamping portion, and the weakening structure can undergo lateral displacement deformation when the suspension control arm is subjected to a lateral impact load. That is, by providing a weakening structure at the bushing clamping portion, the suspension control arm is induced to undergo local unstable deformation at the bushing clamping portion when subjected to a lateral impact load. Compared with the overall large displacement deformation in the related technology, the design of such local unstable deformation has smaller displacement deformation, so that when the suspension control arm is subjected to a lateral impact load, it can be noticed by the user due to the initial deformation, and at the same time, the local small displacement deformation will not have an adverse effect on other components connected and matched therewith.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0018] Figure 1 is a perspective view of a suspension control arm according to an exemplary embodiment.

[0019] Figure 2 yes Figure 1 Top view of the center suspension control arm.

[0020] Figure 3 yes Figure 2 A partial enlarged view of part A.

[0021] Figure 4 yes Figure 1 Side view of the center suspension control arm.

[0022] Description of Reference Numerals

[0023] 1-arm body, 11-top wall, 12-side wall, 2-bushing clamping portion, 3-bushing pressing portion, 4-weakened structure, 41-straight line segment, 42-arc segment, 5-reinforced structure. DETAILED DESCRIPTION

[0024] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0025] The embodiments described in some embodiments of the present disclosure below do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0026] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0027] like Figures 1 to 4 As shown, an exemplary embodiment of the present disclosure provides a suspension control arm, which can be applied to any known suspension system, for example, can be used in a multi-link suspension system. Generally, the suspension control arm includes an arm body 1, a bushing clamping portion 2 arranged at one end of the suspension control arm, and a bushing pressing portion 3 arranged at the other end of the suspension control arm. The bushing clamping portion 2 is provided with a weakening structure 4, and the weakening structure 4 is configured to induce the suspension control arm to deform at the position of the weakening structure 4 when subjected to a lateral impact load.

[0028] It is worth noting that weakening means that the structural strength is lower than other positions of the suspension control arm. The weakening structure 4 can be achieved, for example, by local thinning or by setting a notch as will be introduced later. When subjected to a lateral load, displacement deformation often occurs first at a position with lower structural strength. Therefore, by reasonably setting the position of the weakening structure 4, the purpose of inducing the suspension control arm to undergo displacement deformation can be achieved, and more specifically, the suspension control arm can be induced to undergo smaller displacement deformation at a local position of the bushing clamping portion 2.

[0029] It is also worth noting that the local small displacement deformation here is compared with the overall large displacement deformation of the suspension control arm in the related art. Specifically, in the related art, due to the large deflection and low structural stiffness of the middle position of the suspension control arm, its buckling instability generally occurs in the middle position, accompanied by obvious overall structural instability, that is, a large displacement deformation occurs in a short time. The present disclosure sets a weakening structure at the position of the bushing clamping portion 2 to induce the suspension control arm to undergo displacement deformation at the bushing clamping portion 2. Compared with the related art, this displacement deformation is a local and small displacement deformation.

[0030] Since the displacement deformation that can occur in the suspension control arm of the present disclosure when subjected to a lateral impact load is a local deformation with a small displacement, this deformation can occur first compared to other positions of the suspension control arm, such as the middle position, due to the presence of the weakening structure 4. In this way, the user can be aware of the deformation first, and at the same time, the local small displacement deformation will not have an adverse effect on other parts connected and matched therewith. For example, in a multi-link suspension system, only the local small displacement deformation of the suspension control arm will not damage other links.

[0031] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the suspension control arm provided by the present disclosure is provided with a weakening structure 4 at the bushing clamping portion 2, and the weakening structure 4 can undergo lateral displacement deformation when the suspension control arm is subjected to a lateral impact load. That is, by providing a weakening structure 4 at the bushing clamping portion 2, the suspension control arm is induced to undergo local unstable deformation at the bushing clamping portion 2 when subjected to a lateral impact load. Compared with the overall large displacement deformation in the related technology, the design of such local unstable deformation has smaller displacement deformation, so that when the suspension control arm is subjected to a lateral impact load, it can be noticed by the user due to the first deformation, and at the same time, the local small displacement deformation will not have an adverse effect on other components connected and matched therewith.

[0032] In some embodiments, Figure 1 As shown, the suspension control arm includes a top wall 11 and two side walls 12 arranged opposite to each other, that is, the cross-section of the suspension control arm is similar to a structure in the shape of a letter "J". The suspension control arm in the shape of a letter "J" can be formed in an integrated manner by, for example, forging. The suspension control arm formed in this manner can help reduce the unsprung mass of the vehicle while meeting the requirements of mechanical properties. Among them, the weakening structure 4 is arranged on the top wall 11, and the two side walls 12 are respectively provided with reinforcing structures 5 at positions corresponding to the weakening structure 4. The reinforcing structure 5 can be, for example, a reinforcing rib integrally formed on the side wall 12.

[0033] By setting the weakening structure 4 and the reinforcing structure 5 on different walls of the suspension control arm, the reinforcing structure 5 is "decoupled" from the weakening structure 4, that is, the existence of the reinforcing structure 5 will not interfere with the further design of the weakening structure 4. Specifically, by reasonably designing the weakening structure 4 in terms of shape and size, different transverse bending moduli can be obtained, thereby defining the maximum buckling failure load that the suspension control arm can withstand, realizing the adjustable proportional design of the control arm buckling load, and meeting the performance design requirements of the platform architecture. If the reinforcing structure 5 is also set on the top wall 11, the setting position of the reinforcing structure 5 will change with different designs of the weakening structure 4, so different molds need to be designed to meet the different setting positions of the reinforcing structure 5, resulting in poor versatility of the mold. If the reinforcing structure 5 is decoupled from the weakening structure 4, even if the design of the weakening structure 4 changes, the setting position of the reinforcing structure 5 will not change, and the mold has high versatility, which is conducive to reducing the product production cycle and cost.

[0034] The weakened structure 4 can be configured as a notch extending longitudinally from the end to the middle of the suspension control arm. The notch is a subtractive design, the process required for the structure to be realized is simpler, and it is also more convenient to configure the notch with different shapes and sizes.

[0035] Wherein, in some embodiments, Figure 2 and Figure 3 As shown, the notch can be constructed to include a straight segment 41 and an arc segment 42, wherein the straight segment 41 is connected between the bushing clamping portion 2 and the arc segment 42. The straight segment 41 and the arc segment 42 have a smooth transition, for example, the end points of the straight segment 41 and the arc segment 42 are tangent, which is beneficial to reduce stress concentration. Figure 3 In the figure, the length of the straight line segment 41 is defined as L, and the fillet of the arc segment 42 is defined as R. By properly designing the parameters L and R, different transverse bending moduli can be obtained, thereby defining the maximum buckling failure load that the suspension control arm can withstand, realizing the adjustable proportional design of the control arm buckling load, and meeting the performance design requirements of the platform architecture. Optionally, the ratio of the buckling load of the suspension control arm to the ultimate strength load is in the range of 1.2 to 1.4.

[0036] In some embodiments, the bushing press-fitting portion 3 and the arm body 1 have the same transverse width dimension, and the transverse width dimension of the bushing clamping portion 2 is greater than the transverse width dimensions of the arm body 1 and the bushing press-fitting portion 3. Figure 2 As shown, the lateral width D3 of the bushing press-fitting portion 3 is equal to the lateral width D2 of the arm body 1, while the lateral width D1 of the bushing clamping portion 2 is greater than the lateral width D3 of the bushing press-fitting portion 3 and the lateral width D2 of the arm body 1. This design has sufficient design space to arrange the weakening structure 4, and is also helpful to further induce local displacement deformation in the bushing clamping portion 2.

[0037] In other embodiments, Figure 4 As shown, the height of the transition part between the bushing clamping part 2 and the arm body 1 and the height of the transition part between the bushing press-fitting part 3 and the arm body 1 are both higher than the height of the arm body 1, that is, the suspension control arm provided by the present disclosure is actually a design of unequal cross-sections, wherein the transition part is shown in the dotted box. This unequal cross-section design is compared with the equal cross-section design in the related art. The equal cross-section design is more easily damaged because the deflection of the middle part is relatively larger. The present disclosure adopts an unequal cross-section design, specifically, the transition parts at both ends are higher than the middle part, which is actually equivalent to adding a small oblique support to the transition parts at both ends, which is beneficial to reduce the deflection of the middle part and at the same time play a role in improving the stiffness and strength of the transition parts at both ends.

[0038] According to a second aspect of an embodiment of the present disclosure, there is also provided a suspension system, which includes a suspension control arm in any one of the above-mentioned embodiments and has all its beneficial effects, which will not be described in detail here.

[0039] Optionally, the suspension system may be a multi-link suspension system, such as a more commonly used five-link suspension system. Since the displacement deformation that can occur to the suspension control arm of the present disclosure when subjected to a lateral impact load is local and small, it is not easy to damage other connecting rods connected thereto.

[0040] According to a third aspect of an embodiment of the present disclosure, a vehicle is also provided, comprising the above-mentioned suspension system.

[0041] In the above detailed description, reference is made to the accompanying drawings, which illustrate specific aspects of the present disclosure that can be practiced by way of illustration. In this regard, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating directions or representing positional relationships, can be used with reference to the orientation of the described figures. Since the components of the described device can be positioned in a plurality of different orientations, directional terms can be used for illustrative purposes rather than restrictive. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concepts of the present disclosure. Therefore, the following detailed description should not be considered in a limiting sense.

[0042] It should be understood that, unless otherwise specifically noted, the features of some embodiments of the various present disclosures described herein may be combined with each other. As used herein, the term "and / or" includes any one of the related listed items and any combination of any two or more; similarly, "at least one of . . . " includes any one of the related listed items and any combination of any two or more.

[0043] It should be understood that, unless otherwise clearly specified and limited, the terms "joining", "attaching", "installing", "connecting", "connecting", "fixing" and the like used in the embodiments of the present disclosure should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0044] In addition, the term "above" used in relation to a component, element or material layer formed "above" or located "above" a surface may be used herein to indicate that the component, element or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements or layers are arranged between the surface and the component, element or material layer. However, the term "above" used in relation to a component, element or material layer formed "above" or located "above" a surface may also optionally have a specific meaning: the component, element or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, such as in direct contact with the surface.

[0045] Although terms such as "first", "second" and "third" can be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, component, region, layer or section from another component, component, region, layer or section. Therefore, without departing from the teachings of each example, the first component, component, region, layer or section mentioned in the examples described herein may also be referred to as the second component, component, region, layer or section. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may expressly or implicitly include at least one of the features. In the description herein, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] It should be understood that spatially relative terms such as "above", "upper", "below", and "lower" are used herein to describe the relationship of one element to another element shown in the figures. In addition to the orientation depicted in the drawings, such spatially relative terms are also intended to include different orientations of the device in use or operation. For example, if the device in the drawings is turned over, the element described as being "above" or "upper" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" includes both upper and lower orientations. The device may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0047] In addition, the word "exemplary" is used herein to indicate serving as an example, instance, or diagram. Any aspect or design described as "exemplary" in this article is not necessarily understood to be advantageous compared to other aspects or designs. On the contrary, the use of the word exemplary is intended to present concepts in a specific way. As used herein, the term "or" is intended to represent an inclusive "or" rather than an exclusive "or". That is, unless otherwise specified or clear from the context, "X applies A or B" is intended to represent any one of the natural inclusive arrangements. That is, if X applies A; X applies B; or X applies both A and B, "X applies A or B" is satisfied under any of the aforementioned examples. In addition, unless otherwise specified or clearly pointed to a singular form from the context, the articles "one" and "an" as used in this application and the appended claims are generally understood to mean "one or more".

[0048] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art after reading and understanding the specification and drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components (e.g., elements, resources, etc.) described above, unless otherwise noted, the terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific functions of the described components, even if the structure is not equivalent to the disclosed structure. In addition, although the specific features of the present disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations as may be desired and conducive to any given or specific application. In addition, with respect to "including", "having", "having", "having", or variations thereof used in the specific embodiments or claims, such terms are intended to be inclusive in a manner similar to the term "comprising".

[0049] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

[0050] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A suspension control arm, wherein one end of the suspension control arm is a bushing clamping portion, and the other end is a bushing press-fitting portion, characterized in that: The bushing clamping portion is provided with a weakened structure, and the weakened structure is configured to induce the suspension control arm to deform at the position of the weakened structure when subjected to a lateral impact load.

2. The suspension control arm according to claim 1, characterized in that: The suspension control arm comprises a top wall and two side walls arranged opposite to each other, wherein the weakened structure is arranged on the top wall, and the two side walls are respectively provided with reinforcing structures at positions corresponding to the weakened structure.

3. The suspension control arm according to claim 1 or 2, characterized in that: The weakened structure is configured as a notch, and the notch is arranged to extend longitudinally from an end portion to a middle portion of the suspension control arm.

4. The suspension control arm according to claim 3, characterized in that: The notch includes a straight line segment and a circular arc segment, and the straight line segment is connected between the bushing clamping portion and the circular arc segment.

5. The suspension control arm according to claim 4, characterized in that: The ratio of the buckling load to the ultimate strength load of the suspension control arm is in the range of 1.2 to 1.

4.

6. The suspension control arm according to claim 1, characterized in that: The suspension control arm includes an arm body located between the bushing clamping portion and the bushing pressing portion, wherein the bushing pressing portion and the arm body have the same lateral width dimension, and the lateral width dimension of the bushing clamping portion is greater than the lateral width dimensions of the arm body and the bushing pressing portion.

7. The suspension control arm according to claim 6, characterized in that: The height of the transition portion between the bushing clamping portion and the arm body and the height of the transition portion between the bushing press-fitting portion and the arm body are both higher than the height of the arm body.

8. The suspension control arm according to claim 1, characterized in that: The suspension control arm is an integrated structure formed by forging.

9. A suspension system, characterized in that: A suspension control arm comprising any one of claims 1-8.

10. The suspension system according to claim 9, characterized in that The suspension system is a multi-link suspension system.

11. A vehicle, characterized in that: Comprising the suspension system according to claim 9 or 10.

Images