Automobile suspension and automobile

Abstract

The automobile suspension comprises a lower joint fork and a lower swing arm, the lower joint fork comprises two joint fork arms arranged at intervals, a mounting groove is formed between the two joint fork arms, and a boss is arranged on the side, facing the mounting groove, of at least one joint fork arm in a protruding mode; the lower swing arm is arranged in the mounting groove and rotationally connected with the yoke arm, a guide groove is formed in the side, facing the boss, of the lower swing arm, the boss is inserted into the guide groove, and the end face of the boss is attached to the bottom face of the guide groove. In this way, the shock absorber has the installation guiding function, and installation of the shock absorber and the lower swing arm is facilitated.

Description

Technical Field

[0001] This application belongs to the field of automotive body structures, and particularly relates to an automotive suspension and an automobile. Background Art

[0002] The double wishbone suspension is one of the commonly used front suspension structures in mid - to - high - grade vehicles. The double wishbone suspension includes a connected shock absorber and a lower control arm. The shock absorber is rotatably connected to the lower control arm through a lower knuckle at its bottom.

[0003] In the prior art, due to assembly process limitations, the vehicle often first fixes the shock absorber to the body at a low station and then fixes the lower knuckle of the shock absorber to the lower control arm at a high station. However, the above - mentioned method makes it difficult to align the two, resulting in difficult installation. Utility Model Content

[0004] This application provides an automotive suspension and an automobile, which have an installation guiding function and facilitate the installation of the shock absorber and the lower control arm.

[0005] To solve the above - mentioned technical problems, a technical solution adopted in this application is: to provide an automotive suspension, including a lower knuckle and a lower control arm. The lower knuckle includes two spaced - apart knuckle arms. An installation groove is formed between the two knuckle arms. At least one of the knuckle arms protrudes with a convex platform on the side facing the installation groove. The lower control arm is disposed in the installation groove and the lower control arm is rotatably connected to the knuckle arm. A guiding groove is provided on the side of the lower control arm facing the convex platform. The convex platform is inserted into the guiding groove, and the end face of the convex platform fits with the bottom surface of the guiding groove.

[0006] Preferably, the guiding groove includes a first groove section. The inner side wall of the first groove section is adapted to the outer side wall of at least part of the convex platform. The first groove section is used to position the convex platform. When the outer side wall of the convex platform fits with the inner side wall of the first groove section, accurate positioning can be achieved.

[0007] Preferably, the side wall of the first groove section is an arc surface, and the convex platform is cylindrical. Since both the outer side wall of the convex platform and the inner side wall of the first groove section are arc surfaces, the convex platform can rotate relative to the first groove section while fitting with it, which is used to adjust the angle between the lower knuckle and the lower control arm, and can always ensure accurate positioning of the lower knuckle and the lower control arm during the angle adjustment process.

[0008] Preferably, the first groove section is located at the end of the guiding groove away from the groove opening. When the convex platform moves to the innermost end of the guiding groove, the positioning with the guiding groove is completed.

[0009] Preferably, the guiding groove further includes a second groove section located at the notch of the groove. The width of the second groove section is greater than the width of the boss, and in the direction away from the guiding groove, the width of the second groove section gradually increases. The second groove section forms a flared opening on the guiding groove, increasing the width of the guiding groove, making it easier for the boss to be inserted into the guiding groove from the second groove section. At the same time, since the width of the second groove section gradually decreases, when the boss gradually moves towards the first groove section, the outer side wall of the boss can gradually approach the inner side wall of the first groove section until the two are completely fitted.

[0010] Preferably, the guiding groove further includes a third groove section connected between the first groove section and the second groove section. The third groove section is smoothly connected to the second groove section, and the width of the third groove section is greater than the width of the boss. The third groove section serves as a transition section. Since its width is greater than the width of the boss, when the boss passes through the second groove section, it can fine-tune its position during the movement in the third groove section 121c, facilitating subsequent fitting with the first groove section.

[0011] Preferably, bosses are provided on one side of each of the two joint fork arms facing the mounting groove, and two guiding grooves are respectively provided on both sides of the lower swing arm corresponding to the bosses. This enables both joint fork arms to be installed and guided for positioning, further improving the positioning accuracy.

[0012] Preferably, a first shaft hole is provided on the boss, a second shaft hole is provided in the guiding groove, and a bushing is provided in the second shaft hole; the connecting structure further includes a bolt, the bolt passes through the first shaft hole and the bushing, and the lower joint fork is rotatably connected to the lower swing arm through the bolt.

[0013] Preferably, the extending direction of the guiding groove is the same as the extending direction of the lower swing arm.

[0014] To solve the above technical problems, another technical solution adopted by this application is: to provide an automobile, including the automobile suspension according to any one of the embodiments.

[0015] Different from the prior art situation, the beneficial effect of this application is: The automobile suspension provided by this application is provided with a guiding structure on the lower joint fork and the lower swing arm. When assembling the shock absorber and the lower swing arm, first insert the boss at the bottom end of the lower joint fork into the open end of the guiding groove, the boss fits with the inner wall of the guiding groove, and gradually move the boss towards the bottom end of the guiding groove along the extending direction of the guiding groove until the positioning of the lower joint fork and the lower swing arm is completed. Then, it is convenient to connect the lower joint fork and the lower swing arm through a fixing member. This application realizes the pre-guiding and positioning in the assembly of the lower joint fork and the lower swing arm by setting the guiding structure, improving the convenience of their installation. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings, where:

[0017] Figure 1 is a schematic structural diagram of an embodiment of an automotive suspension of the present application;

[0018] Figure 2 is an exploded view of an embodiment of an automotive suspension of the present application;

[0019] Figure 3 is a schematic structural diagram of an embodiment of a lower control arm of the present application;

[0020] Figure 4 is an exploded view of an embodiment of a lower control arm of the present application. Specific Embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0022] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of an embodiment of an automotive suspension of the present application, Figure 2It is an exploded view of an embodiment of the vehicle suspension of the present application. The vehicle suspension 10 can be a double-wishbone suspension, including a lower fork 11, a lower control arm 12, and a shock absorber 13. Among them, two lower control arms 12 are provided corresponding to one wheel. The lower fork 11 is connected to one lower control arm 12. The lower fork 11 includes a mounting hole 111 at the top. The lower fork 11 is sleeved outside the bottom of the shock absorber 13 through the mounting hole 111 and is fixedly connected to the shock absorber 13 by bolts. The top end of the shock absorber 13 is connected to the vehicle body. The lower fork 11 includes two spaced fork arms 112 at the bottom. An installation groove 112a is formed between the two fork arms 112. The installation groove 112a is a through groove with an opening downward. At least one fork arm 112 is convexly provided with a convex platform 113 on the side facing the installation groove 112a. The lower control arm 12 is arranged in the installation groove 112a, and the lower control arm 12 is rotatably connected to the fork arm 112, so that the lower fork 11 and the lower control arm 12 can rotate relative to each other. A guide groove 121 is provided on the side of the lower control arm 12 facing the convex platform 113. The convex platform 113 is inserted into the guide groove 121, and the end face of the convex platform 113 fits with the bottom surface of the guide groove 121.

[0023] The vehicle suspension provided by the present application is provided with a guiding structure on the lower fork 11 and the lower control arm 12. When assembling the shock absorber and the lower control arm 12, first insert the convex platform 113 at the bottom end of the lower fork 11 into the open end of the guide groove 121. The convex platform 113 fits with the inner wall of the guide groove 121. Among them, the end face of the convex platform 113 fits with the bottom surface of the guide groove 121, and the outer side surface of the convex platform 113 fits with the inner side surface of the guide groove 121. Move the convex platform 113 gradually towards the bottom end of the guide groove 121 along the extending direction of the guide groove 121 until the positioning of the lower fork 11 and the lower control arm 12 is completed. Then it is convenient to connect the lower fork 11 and the lower control arm 12 through a fixing member. The present application realizes the advance guiding and positioning in the assembly of the lower fork 11 and the lower control arm 12 by setting the guiding structure, and improves the convenience of the installation of the two.

[0024] Optionally, convex platforms 113 are provided on the sides of both fork arms 112 facing the installation groove 112a. Two guide grooves 121 are respectively provided on both sides of the lower control arm 12 corresponding to the convex platforms 113. The two convex platforms 113 and the two guide grooves 121 are symmetrically arranged. The above setting enables both fork arms 112 to carry out installation guiding and positioning, further improving the positioning accuracy. In other embodiments, the convex platform 113 and the corresponding guide groove 121 can also be provided on only one side.

[0025] In some other embodiments, the convex platform 113 can be in a rectangular block structure, and the guide groove 121 can be a rectangular groove that is inserted and matched with the convex platform 113. The convex platform 113 realizes guiding and positioning by moving in the guide groove 121.

[0026] Further, the extending direction of the guiding groove 121 is substantially the same as the extending direction of the lower swing arm 12, and the opening of the guiding groove 121 faces away from the end of the wheel connected to the lower swing arm 12 (i.e., the opening faces right in the figure). Since the lower joint fork 11 has been fixed to the vehicle body through the shock absorber 13 before the assembly of the lower joint fork 11 and the lower swing arm 12, there are certain restrictions on the relative position between the lower joint fork 11 and the lower swing arm 12. Therefore, the above setting facilitates the insertion of the boss 113 into the guiding groove 121 from the end away from the wheel and gradually moving along the extending direction of the lower swing arm 12 to achieve positioning.

[0027] Optionally, referring to Figure 3 , Figure 3 is a schematic structural diagram of an embodiment of the lower swing arm of the present application. The guiding groove 121 is a U-shaped groove. The guiding groove 121 includes a first groove section 121a. The inner sidewall of the first groove section 121a is adapted to the outer sidewall of at least part of the boss 113, and the first groove section 121a is used to position the boss 113. Specifically, the sidewall of the first groove section 121a is an arc surface, and the boss 113 is cylindrical. When the outer sidewall of the boss 113 fits with the inner sidewall of the first groove section 121a, accurate positioning can be achieved. Since both the outer sidewall of the boss 113 and the inner sidewall of the first groove section 121a are arc surfaces, the boss 113 can rotate relatively while fitting with the first groove section 121a, which is used to adjust the angle between the lower joint fork 11 and the lower swing arm 12, and can always ensure the accurate positioning of the lower joint fork 11 and the lower swing arm 12 during the angle adjustment process. The arc surface of the sidewall of the first groove section 121a is a minor arc surface, which facilitates the fitting of the boss 113. In other embodiments, the sidewall of the first groove section 121a can also be other shapes such as a plane. Optionally, the first groove section 121a is located at the end of the guiding groove 121 away from the groove opening, that is, the guiding groove 121 is a blind groove, and the first groove section 121a is located at the sealed end of the guiding groove 121, that is, when the boss 113 moves to the innermost end of the guiding groove 121, the positioning with the guiding groove 121 is completed.

[0028] Optionally, continuing to refer to Figure 2 , a chamfer is provided at the edge of the end face of the boss 113, making it more convenient for the boss 113 to be inserted into the guiding groove 121.

[0029] Optionally, referring to Figure 2 and Figure 4 , Figure 4This is an exploded view of an embodiment of the lower control arm of the present application. A first shaft hole 114 is provided on the boss 113, a second shaft hole 122 is provided in the guide groove 121, a bushing 123 is provided in the second shaft hole 122, and the bushing 123 is press-fitted in the second shaft hole 122 for buffering. The connecting structure further includes a bolt 14, and the bolt 14 passes through the first shaft hole 114 and the bushing 123, and the lower fork 11 is rotatably connected to the lower control arm 12 through the bolt 14. The lower fork 11 and the lower control arm 12 are connected through the bolt 14. In the actual assembly process, first, the bushing 123 is installed into the second shaft hole 122, and the end face of the bushing 123 should be lower than the bottom surface of the guide groove 121 or the side surface of the lower control arm 12. Then, after the boss 113 is inserted into the guide groove 121 and positioned, the first shaft hole 114 is aligned with the second shaft hole 122. At this time, the bolt 14 can pass through the first shaft hole 114 and the second shaft hole 122 and then tighten the nut to complete the fixation. At this time, the end face of the boss 113 is in contact with the bottom surface of the guide groove 121 to complete the assembly. It should be noted that there may be a certain gap between the side wall of the boss 113 and the side wall of the guide groove 121 after the assembly is completed, and it is not necessary to be completely in contact. Optionally, the first shaft hole 114, the second shaft hole 122 and the groove wall of the first groove section 121a are coaxially arranged, so that when the boss 113 is in contact with and rotates with the first groove section 121a, the first shaft hole 114 can always be aligned with the second shaft hole 122, further improving the convenience of assembly.

[0030] Furthermore, the guide groove 121 further includes a second groove section 121b located at the notch. The width of the second groove section 121b is greater than the width of the boss 113, and in the direction away from the guide groove 121, the width of the second groove section 121b gradually increases. The second groove section 121b forms a flared opening on the guide groove 121, increasing the width of the guide groove 121, making it easier for the boss 113 to be inserted into the guide groove 121 from the second groove section 121b. At the same time, since the width of the second groove section 121b gradually decreases, when the boss 113 gradually moves towards the first groove section 121a, the outer side wall of the boss 113 can gradually approach the inner side wall of the first groove section 121a until the two are completely in contact.

[0031] In some embodiments, the first groove section 121a can be smoothly connected to the second groove section 121b, so that the boss 113 can quickly transition from the flared opening of the second groove section 121b to being in contact with the first groove section 121a to complete the positioning.

[0032] In some embodiments, the guiding groove 121 further includes a third groove section 121c connected between the first groove section 121a and the second groove section 121b. The third groove section 121c is smoothly connected to the second groove section 121b, and the width of the third groove section 121c is greater than the width of the boss 113. The bottom surfaces of the first groove section 121a, the second groove section 121b, and the third groove section 121c are coplanar. The widths of the ends where the third groove section 121c and the second groove section 121b are connected to each other are the same, so that the third groove section 121c is smoothly connected to the second groove section 121b, and a step difference is formed between the side wall of the third groove section 121c and the side wall of the first groove section 121a. The third groove section 121c serves as a transition section, enabling the boss 113 to move along the side wall of the guiding groove 121. Since the width is greater than the width of the boss 113, when the boss 113 passes through the second groove section 121b, it can fine-tune its position in the third groove section 121c during the movement, facilitating subsequent fitting with the first groove section 121a.

[0033] The present application also provides an automobile, including the vehicle suspension 10 according to any one of the foregoing embodiments. The vehicle suspension 10 provided by the present application is applicable to different vehicle models.

[0034] The above are only embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. An automotive suspension, characterized in that, Comprising: Lower cross fork, the lower cross fork includes two spaced apart fork arms, an installation groove is formed between the two fork arms, and at least one of the fork arms is convex with a boss on the side facing the installation groove; Lower swing arm, the lower swing arm is arranged in the installation groove and the lower swing arm is rotatably connected to the fork arm, a guiding groove is provided on the side of the lower swing arm facing the boss, the boss is inserted into the guiding groove, and the end face of the boss fits against the bottom surface of the guiding groove.

2. The vehicle suspension according to claim 1, wherein The guiding groove includes a first groove section, and the inner side wall of the first groove section is adapted to the outer side wall of at least a part of the boss, and the first groove section is used for positioning the boss.

3. The vehicle suspension according to claim 2, wherein The side wall of the first groove section is an arc surface, and the boss is cylindrical.

4. The vehicle suspension according to claim 2 or 3, wherein The first groove section is located at one end of the guiding groove away from the groove opening.

5. The vehicle suspension according to claim 4, wherein The guiding groove further includes a second groove section located at the groove opening, the width of the second groove section is greater than the width of the boss, and in the direction away from the guiding groove, the width of the second groove section gradually increases.

6. The vehicle suspension according to claim 5, wherein The guiding groove further includes a third groove section connected between the first groove section and the second groove section, the third groove section is smoothly connected to the second groove section, and the width of the third groove section is greater than the width of the boss.

7. The vehicle suspension according to claim 1, wherein Both of the two fork arms are provided with the bosses on the side facing the installation groove, and two guiding grooves are respectively provided on both sides of the lower swing arm corresponding to the bosses.

8. The vehicle suspension according to claim 1, wherein A first shaft hole is provided on the boss, a second shaft hole is provided in the guiding groove, and a bushing is provided in the second shaft hole; The vehicle suspension further includes a bolt, the bolt passes through the first shaft hole and the bushing, and the lower cross fork is rotatably connected to the lower swing arm through the bolt.

9. The vehicle suspension according to claim 1, wherein The extending direction of the guiding groove is the same as the extending direction of the lower swing arm.

10. A vehicle, characterized in that, Comprising: The vehicle suspension according to any one of claims 1-9.

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