Automobile suspension tie rod structure

Abstract

The utility model discloses a car suspension pull rod structure, including main skeleton and branch skeleton, detachable cooperation between main skeleton and branch skeleton, the ring platform is provided with along the radial convex setting of the plug -in end outside, branch skeleton end face is along the circumferential interval and is provided with a plurality of guide plug -in board, the ring platform is correspondingly provided with the hole of giving place for each guide plug -in board to pass through, still include the lock pin of activity setting on the guide plug -in board along the radial, the lock pin is in working condition and axially leans against ring platform and forms mechanical limit, and the axial movement of branch skeleton relative to main skeleton is limited, the utility model discloses a suspension pull rod is designed as the split type structure of detachable cooperation of main skeleton and branch skeleton, when the performance degradation of partial component (such as bushing) on the pull rod structure, only need to unscrew the lock pin, and quickly detach branch skeleton from main skeleton, can realize modular maintenance and partial replacement, and maintenance cost and resource waste are reduced significantly.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and in particular relates to automotive suspension tie rod structures. Background Technology

[0002] In automotive powertrain mounting systems, the mounting tie rod, as a key connecting component, is mainly used to limit excessive displacement of the engine or transmission, while transmitting torque loads and working with the main mount to achieve vibration isolation.

[0003] Traditional suspension tie rods typically employ an integral structure, such as a metal frame and rubber bushing molded together through a vulcanization process. When such a structure experiences localized performance degradation or functional failure, the entire tie rod assembly generally needs to be replaced, resulting in high maintenance costs and significant resource waste. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution: This utility model provides an automotive suspension tie rod structure, including: The main frame and the sub-frames are detachably connected; The main frame and the sub-frame are respectively provided with a plug-in end and a plug-in groove at their respective ends. The plug-in end is provided with a ring platform that protrudes radially on its outer side. The end face of the sub-frame is provided with a plurality of guide plates at intervals along the circumference. The ring platform is provided with corresponding clearance holes for each guide plate to pass through. It also includes a locking pin that is movably disposed on the guide plate in the radial direction. When the locking pin is in working state, it abuts against the ring platform axially to form a mechanical limit and restrict the axial movement of the sub-frame relative to the main frame.

[0005] As a preferred embodiment of the above technical solution, the guide plate is designed with a through hole to accommodate a locking pin, and the locking pin is threadedly engaged with the through hole.

[0006] As a preferred embodiment of the above technical solution, an elastic washer is also included. The elastic washer is disposed in the annular gap between the outer side of the insertion end and the inner side of the guide plate. One axial end of the elastic washer abuts against the end face of the ring platform, and the other axial end of the elastic washer abuts against the locking pin in the locked state.

[0007] As a preferred embodiment of the above technical solution, the inner side of the sub-frame is provided with an inner core and a bushing that wraps around the outer side of the inner core.

[0008] The beneficial effects of this utility model are as follows: This invention designs the suspension tie rod into a split structure with a main frame and a sub-frame that can be detached and fitted together. When the performance of a local component (such as a bushing) on ​​the tie rod structure deteriorates, the sub-frame can be quickly removed from the main frame by simply loosening the locking pin, thus achieving modular maintenance and partial replacement, significantly reducing maintenance costs and resource waste. Attached Figure Description

[0009] Figure 1 The diagram shown is a front view of the tie rod structure in the embodiment; Figure 2 The diagram shown is a cross-sectional view of the tie rod structure in the embodiment; Figure 3 What is shown is Figure 2 Enlarged schematic diagram of the structure at point A in the diagram; Figure 4 The diagram shown is a side view of the structure of the main frame and the sub-frames in the embodiment. Reference numerals: 10, main frame; 20, sub-frame; 21, inner core; 22, bushing; 31, insertion end; 32, ring platform; 33, guide plate; 34, elastic washer; 35, locking pin. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0011] Example like Figure 1 , Figure 2 As shown, Figure 1 The diagram shown is a front view of the tie rod structure in the embodiment; Figure 2 The diagram shown is a cross-sectional view of the tie rod structure in the embodiment; This device includes: The main frame 10 and the sub-frame 20 are detachable and can be joined together.

[0012] The inner core 21 and the bushing 22 wrapped around the outer side of the inner core 21 are provided on the inner side of the frame 20.

[0013] One end of the main frame 10 is used to connect to the powertrain, and the other end is used to connect to the vehicle frame. The inner core 21 is located inside the sub-frame 20, and the bushing 22 covers the outer side of the inner core 21. The bushing 22 is in contact with the inner wall of the sub-frame 20. When the vehicle is running, the vibration or impact from the powertrain is transmitted to the sub-frame 20 area through the main frame 10. At this time, the bushing 22 absorbs the vibration energy through elastic deformation, effectively isolating high-frequency noise and impact.

[0014] The detachable assembly means that when a local component (such as bushing 22) ages, wears or fails, the entire suspension tie rod assembly does not need to be replaced. Only the sub-frame 20 needs to be removed from the main frame 10, and the inner core 21 and bushing 22 can be replaced or maintained separately. This reduces maintenance costs, improves assembly efficiency, and facilitates modular replacement of bushings with different stiffness or damping characteristics to adapt to various vehicle models or operating conditions.

[0015] like Figure 2 , Figure 3 , Figure 4 As shown, Figure 2 The diagram shown is a cross-sectional view of the tie rod structure in the embodiment; Figure 3 What is shown is Figure 2 Enlarged schematic diagram of the structure at point A in the diagram; Figure 4 The diagram shown is a side view of the structure of the main frame and the sub-frames in the embodiment. The main frame 10 and the sub-frame 20 are respectively provided with a plug-in end 31 and a plug-in groove at their respective ends. The plug-in end 31 is provided with a ring platform 32 protruding radially on its outer side. The end face of the sub-frame 20 is provided with a number of guide plates 33 spaced circumferentially. The ring platform 32 is provided with corresponding clearance holes for each guide plate 33 to pass through.

[0016] The insertion slot is located at the corresponding end of the sub-frame 20 to accommodate the insertion end 31. The annular platform 32 protrudes radially outward from the outer circumferential surface of the insertion end 31, forming an annular flange with multiple clearance holes. Four guide plates 33 are arranged circumferentially along the end face of the sub-frame 20. The guide plates 33 extend outward from the end face of the sub-frame 20, and their shape and position correspond one-to-one with the clearance holes on the annular platform 32. During assembly, the insertion end 31 of the main frame 10 is inserted into the insertion slot of the sub-frame 20, and at the same time, each guide plate 33 passes through the corresponding clearance hole on the annular platform 32 to achieve alignment and guidance. After insertion, the sub-frame 20 and the main frame 10 form a circumferential pre-position and provide a basis for subsequent locking.

[0017] Specifically, the clearance hole is a fan-shaped hole, the width of which is slightly larger than the thickness of the guide plate 33 to allow for assembly tolerances.

[0018] It also includes a locking pin 35 that is radially movable on the guide plate 33. When in operation, the locking pin 35 abuts against the ring platform 32 to form a mechanical limit, restricting the axial movement of the sub-frame 20 relative to the main frame 10.

[0019] Specifically, the guide plate 33 is designed with a through hole to accommodate the locking pin 35, which is threaded into the through hole. The inner wall of the through hole on the guide plate 33 is machined with internal threads, and the outer circumferential surface of the locking pin 35 is provided with matching external threads, so that the locking pin 35 can be screwed into and threaded into the through hole of the guide plate 33.

[0020] When assembled, the locking pin 35 forms a mechanical block in the axial direction, effectively preventing the sub-frame 20 from coming out along the axial direction of the main frame 10, thus achieving reliable locking.

[0021] It also includes an elastic washer 34, which is disposed in the annular gap between the outer side of the insertion end 31 and the inner side of the guide plate 33. One end of the elastic washer 34 abuts against the end face of the ring platform 32 in the axial direction, and the other end abuts against the locking pin 35 in the locked state.

[0022] After the sub-frame 20 is inserted into the plug end 31 of the main frame 10, the guide plate 33 passes through the clearance hole on the ring platform 32, forming a gap between the two. The elastic washer 34 is pre-installed or pressed into the gap. The inner side of the elastic washer 34 is in contact with the outer end face of the plug end 31, and the outer side abuts against the inner side of the guide plate 33. The two ends in the axial direction abut against the ring platform 32 and the locking pin 35 respectively, further improving the impact resistance and anti-loosening performance, absorbing high-frequency vibration energy, and suppressing abnormal noise caused by road surface excitation or powertrain vibration.

[0023] In the above description, axial direction refers to the direction along the centerline L of the main frame 10 (e.g., Figure 1 As shown), the radial direction is the straight line from one end of the main frame 10 (connected to the powertrain) to the other end (connected to the chassis); the radial direction refers to the direction perpendicular to the center line of the main frame 10, that is, any direction radiating outward from the central axis.

[0024] It should be noted that the above-mentioned detachable mating structure, through multiple constraints of plug-in positioning, circumferential guidance and axial mechanical locking, can maintain the overall structural strength and force transmission stiffness of the tie rod while ensuring the quick assembly and disassembly function, without affecting its load-bearing and limiting performance in the whole vehicle.

[0025] Working principle: During assembly, the main frame 10 and the sub-frame 20 are initially connected to the insertion slot through the insertion end 31. The guide plate 33 passes through the clearance hole on the ring platform 32 to complete the circumferential alignment. Then, the locking pin 35, which is threaded with the guide plate 33, is screwed in, so that it abuts against the elastic washer 34 and the ring platform 32 in the axial direction to form a mechanical limit and prevent the sub-frame 20 from coming out.

[0026] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An automotive suspension tie rod structure, characterized in that, include: The main frame (10) and the sub-frame (20) are detachably connected; The main frame (10) and the sub-frame (20) are respectively provided with a plug-in end (31) and a plug-in groove at the ends of the main frame (10) and the sub-frame (20). The plug-in end (31) is provided with a ring platform (32) protruding radially on the outer side. The end face of the sub-frame (20) is provided with a number of guide plates (33) spaced circumferentially. The ring platform (32) is provided with a clearance hole for each guide plate (33) to pass through. It also includes a locking pin (35) that is movably provided radially on the guide plate (33). The locking pin (35) abuts against the ring platform (32) in the working state to form a mechanical limit, thereby restricting the axial movement of the sub-frame (20) relative to the main frame (10).

2. The automotive suspension tie rod structure according to claim 1, characterized in that, The guide plate (33) is designed with a through hole to accommodate a locking pin (35), which is threaded into the through hole.

3. The automotive suspension tie rod structure according to claim 2, characterized in that, It also includes an elastic washer (34), which is disposed in the annular gap between the outer side of the plug end (31) and the inner side of the guide plate (33). One axial end of the elastic washer (34) abuts against the end face of the ring platform (32), and the other axial end of the elastic washer (34) abuts against the locking pin (35) in the locked state.

4. The automotive suspension tie rod structure according to claim 1, characterized in that, The inner side of the sub-frame (20) is provided with an inner core (21) and a bushing (22) wrapped around the outer side of the inner core (21).

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