Multi-connecting-rod aluminum alloy rear steering knuckle provided with calipers in side direction
By designing a multi-link structure of laterally mounted calipers on the rear steering joint of the aluminum alloy, and using cast bosses and threaded fastening calipers, the problem of high performance requirements for fixed calipers in high-performance models is solved, and the braking performance is improved And avoid stress concentration.
Patent Information
- Application Number
- CN202421632326.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The existing fixed caliper structures have too high requirements for steering knuckle performance in high-performance models, and are prone to stress concentration during the car driving, affecting braking performance.
A multi-link aluminum alloy rear steering joint with lateral calipers is designed. By setting casting bosses and threads on the rear steering joint body, the calipers are tightened sideways with M12 bolts to reduce shear stress and improve braking. performance.
By tightening the caliper with lateral bolts, the shear stress of the rear steering joint during braking conditions is reduced, the braking performance is improved, and the braking performance requirements of high-performance models are met, avoiding stress concentration.
Smart Images
Figure CN222136844U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an aluminum alloy rear steering knuckle structure, in particular to an aluminum alloy rear steering knuckle used for laterally installing a caliper structure. Background Art
[0002] With the advancement of technology, the number of performance models of various brands on the market has gradually increased, and with it comes higher requirements for the performance of components. Performance cars require greater braking force and shorter braking time when braking. The caliper structures currently used mainly include floating calipers and laterally mounted fixed calipers. Compared with floating calipers, laterally mounted fixed calipers have the following main characteristics: compared with floating calipers, fixed calipers have more brake piston cylinders and brake pistons on both sides; fixed calipers have a larger contact braking area than floating calipers; fixed calipers require more assembly space. Based on the above characteristics, fixed calipers can provide higher braking performance, so the use rate of fixed calipers in the market is also increasing, but the application of this structure also leads to higher performance requirements for steering knuckles.
[0003] On the other hand, as one of the most critical components in the independent suspension structure, the steering knuckle is mainly used to connect the swing arms, wheel hub bearings, brake calipers, fenders and other components in the suspension, while transmitting the forces between the components to ensure the smooth driving of the car. The steering knuckle is subjected to alternating loads under different driving conditions of the car, so it is required to have strong stiffness and strength. Utility Model Content
[0004] In order to solve the above problems, the purpose of the utility model is to provide a multi-link aluminum alloy rear steering knuckle with a laterally mounted caliper, which can meet the requirements of high-performance use.
[0005] According to the utility model, a multi-link aluminum alloy rear steering knuckle with a laterally mounted caliper is provided, comprising a rear steering knuckle body, on which are provided: a wheel hub bearing mounting portion located at a central portion, and two cast bosses located at side portions and spaced apart from each other, wherein the wheel hub bearing mounting portion comprises a wheel hub bearing locating hole and a bearing mounting flange surface, and the cast boss constitutes a brake caliper mounting portion, comprising: a boss end face perpendicular to the bearing mounting flange surface, and a thread arranged in a direction perpendicular to the boss end face, wherein the thread is used to laterally fasten the caliper to the brake caliper mounting portion by bolts, wherein the caliper cooperates with the boss end face.
[0006] Preferably, a front upper control arm mounting portion is further provided on the rear steering knuckle body, and a front upper control arm mounting hole is opened on the front upper control arm mounting portion, which is connected to the front upper control arm by bolts.
[0007] Preferably, a front lower control arm mounting portion is further provided on the rear steering knuckle body, a front lower control arm mounting hole is opened on the front lower control arm mounting portion, and the front lower control arm is connected to the front lower control arm by bolts.
[0008] Preferably, a front toe arm mounting portion is further provided on the rear steering knuckle body, and a front toe arm mounting hole is opened on the front toe arm mounting portion, which is connected to the front toe arm by bolts.
[0009] Preferably, a shock absorber mounting portion is further provided on the rear steering knuckle body, and the shock absorber mounting portion is made into an open-crotch form, has a shock absorber mounting hole, and is connected to the shock absorber by bolts.
[0010] Preferably, a rear upper control arm mounting portion is also provided on the rear steering knuckle body, and the rear upper control arm mounting portion is made into an open crotch form, and is respectively provided with mounting hole I and mounting hole II, wherein mounting hole I is used for press-fitting a slider, and mounting hole II is connected to the rear upper control arm by bolts.
[0011] Preferably, a rear lower control arm mounting portion is also provided on the rear steering knuckle body, and the rear lower control arm mounting portion is made into an open-crotch form and is connected to the rear lower control arm by bolts.
[0012] Preferably, the boss distance between the two casting bosses is 180 mm.
[0013] Preferably, the end surface profile and roughness of the boss end surface are 0.5 and Ra6.3 respectively.
[0014] According to the utility model, a transverse bolt installation method of a multi-link rear steering knuckle and a caliper is attempted for the first time, thereby realizing a transverse installation method of a multi-link rear steering knuckle and a brake caliper. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a partial assembly schematic diagram of the utility model.
[0016] Figure 2 It is a structural schematic diagram of the utility model.
[0017] Figure 3 It is a partial engineering diagram of the rear steering knuckle of the utility model. DETAILED DESCRIPTION
[0018] The exemplary embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings. The exemplary embodiments described below and shown in the accompanying drawings are intended to teach the principles of the present utility model, so that those skilled in the art can implement and use the present utility model in several different environments and for several different applications. Therefore, the scope of protection of the present utility model is defined by the attached claims, and the exemplary embodiments are not intended to be, and should not be considered as, a limiting description of the scope of protection of the present utility model.
[0019] Throughout the drawings, the same or similar elements or parts are represented by the same or similar reference numerals. For the convenience of description, the sizes of the various parts shown in the drawings are not necessarily drawn according to the actual proportional relationship. The directions or positional relationships indicated, such as up, down, left, right, top, bottom, etc., are all based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0020] On the aluminum alloy rear steering knuckle to which the utility model is applicable, the fixed caliper 30 is a bolt 31 such as M12 which is laterally (such as Figure 1 The rear steering knuckle body 32 is mounted on the rear steering knuckle body 32. Preferably, the rear steering knuckle is made of aluminum alloy.
[0021] like Figure 2 As shown, the multi-link aluminum alloy rear knuckle (also referred to as rear knuckle) of the laterally mounted caliper of the utility model comprises a rear knuckle body 32, on which are provided: a wheel hub bearing mounting portion 1, a front upper control arm mounting portion 4, a front lower control arm mounting portion 6, a front toe arm mounting portion 8, a shock absorber mounting portion 10, a rear upper control arm mounting portion 12, a rear lower control arm mounting portion 15 and a brake caliper mounting portion 18.
[0022] The wheel hub bearing mounting portion 1 is located at the center of the rear knuckle body 32 and is mainly composed of a wheel hub bearing positioning hole 2 and four surrounding wheel hub bearing mounting bolt holes 3 .
[0023] A front upper control arm mounting hole 5 is provided on the front upper control arm mounting portion 4. The mounting hole needs to be press-fitted with a ball joint and then connected to the front upper control arm by bolts.
[0024] A front lower control arm mounting hole 7 is provided on the front lower control arm mounting portion 6. The mounting hole needs to be press-fitted with a ball joint and then connected to the front lower control arm by bolts.
[0025] A front toe arm mounting hole 9 is provided on the front toe arm mounting portion 8. The mounting hole needs to be threaded on the rear knuckle body 32 and then connected to the front toe arm by bolts.
[0026] The shock absorber mounting portion 10 is made into an open crotch form and is provided with a shock absorber mounting hole 11 for connecting with the shock absorber through bolts.
[0027] The rear upper control arm mounting portion 12 is made into an open crotch form, and is respectively provided with a mounting hole Ⅰ13 and a mounting hole Ⅱ14, wherein the mounting hole Ⅰ13 needs to be press-fitted with a slider, and the mounting hole Ⅱ14 needs to be threaded on the rear steering knuckle body 32 and then connected to the rear upper control arm by bolts.
[0028] The rear lower control arm mounting portion 15 is made into an open crotch form, and is respectively provided with a mounting hole III16 and a mounting hole IV17, wherein the mounting hole III16 needs to be threaded on the rear steering knuckle body 32, and the mounting hole IV17 is a through hole, and then connected to the rear lower control arm by bolts.
[0029] The brake caliper mounting portion 18 is located at the side of the rear knuckle body 32 (eg Figure 2 As shown, two casting bosses are added and set on the left side of the hub bearing positioning hole 2. The boss spacing is 180mm; the boss end face 20 is perpendicular to the bearing mounting flange surface of the hub bearing mounting part 1. The thread 19 is tapped transversely in a direction perpendicular to the boss end face 20. The caliper 30 cooperates with the boss end face 20 and is fastened to the brake caliper mounting part 18 through an M12 thread and an M12 bolt 31.
[0030] like Figure 3 As shown, on the two casting bosses of the brake caliper mounting portion 18, the thread axis spacing 25 is 180 mm, the end surface profile 23 and the roughness 24 are 0.5 and Ra6.3 respectively, and the specifications of the tapped first thread 21 and the second thread 22 are M12×1.5. In this way, the end surfaces of the two casting bosses can be used as the lateral mounting surfaces of the rear steering knuckle.
[0031] As described above, through the design of the utility model, the caliper is fastened to the lateral mounting surface of the rear steering knuckle by the lateral bolts, which greatly reduces the shear stress of the rear steering knuckle in the braking condition, and the braking performance of the caliper is provided by the tensile and compressive material properties. In this way, the stress concentration during the driving process of the car is successfully avoided, so that the braking performance of the rear steering knuckle is improved, and the braking performance requirements of customers' high-performance models can be met.
[0032] In the description of the present application, the meaning of "multiple" is two or more than three, unless otherwise clearly and specifically defined. Unless otherwise clearly stipulated and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, it can also be a detachable connection, or it can be integrated. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. Although the utility model has been described with reference to various specific embodiments, it should be understood that variations can be made within the spirit and scope of the utility model concept described. Therefore, it is intended that the utility model is not limited to the described embodiments, but will have the full scope defined by the language of the appended claims.
Claims
1. A multi-link aluminum alloy rear steering knuckle with a lateral mounted caliper, comprising a rear steering knuckle body (32), It is characterized in that The rear steering knuckle body (32) is provided with: a wheel hub bearing mounting portion (1) located at the center, and two cast bosses located at the side portions and spaced apart from each other, wherein the wheel hub bearing mounting portion (1) comprises a wheel hub bearing positioning hole (2) and a bearing mounting flange surface, and the cast boss is configured as a brake caliper mounting portion (18), comprising: a boss end surface (20) perpendicular to the bearing mounting flange surface, and a thread arranged in a direction perpendicular to the boss end surface (20), wherein the thread is used to laterally fasten the caliper (30) to the brake caliper mounting portion (18) via a bolt (31), wherein the caliper (30) cooperates with the boss end surface (20).
2. The multi-link aluminum alloy rear steering knuckle for the side-mounted caliper according to claim 1, It is characterized in that The rear steering knuckle body (32) is also provided with a front upper control arm mounting portion (4), and a front upper control arm mounting hole (5) is provided on the front upper control arm mounting portion (4) and is connected to the front upper control arm via bolts.
3. The multi-link aluminum alloy rear steering knuckle for the side-mounted caliper according to claim 1, It is characterized in that A front lower control arm mounting portion (6) is also provided on the rear steering knuckle body (32), and a front lower control arm mounting hole (7) is provided on the front lower control arm mounting portion (6) and is connected to the front lower control arm via bolts.
4. The multi-link aluminum alloy rear steering knuckle for the side-mounted caliper according to claim 1, It is characterized in that The rear steering knuckle body (32) is also provided with a front toe arm mounting portion (8), and a front toe arm mounting hole (9) is provided on the front toe arm mounting portion (8) and is connected to the front toe arm via bolts.
5. The multi-link aluminum alloy rear steering knuckle for the side-mounted caliper according to claim 1, It is characterized in that A shock absorber mounting portion (10) is also provided on the rear steering knuckle body (32). The shock absorber mounting portion (10) is made into an open-crotch form and is provided with a shock absorber mounting hole (11) and is connected to the shock absorber via bolts.
6. The multi-link aluminum alloy rear steering knuckle for the side-mounted caliper according to claim 1, It is characterized in that The rear steering knuckle body (32) is also provided with a rear upper control arm mounting portion (12), which is made into an open-crotch form and is respectively provided with a mounting hole I (13) and a mounting hole II (14), wherein the mounting hole I (13) is used for press-fitting a slider, and the mounting hole II (14) is connected to the rear upper control arm via bolts.
7. The multi-link aluminum alloy rear steering knuckle for a side-mounted caliper according to claim 1, It is characterized in that The rear steering knuckle body (32) is also provided with a rear lower control arm mounting portion (15), which is made into an open-crotch form and is connected to the rear lower control arm via bolts.
8. The multi-link aluminum alloy rear steering knuckle for a side-mounted caliper according to claim 1, It is characterized in that The boss distance between the two casting bosses is 180 mm.