Single trailing arm rear suspension structure

Abstract

The utility model relates to the technical field of suspension structures, and discloses a single-trailing-arm rear suspension structure which comprises a trailing arm connecting seat, a shock absorber mounting seat is arranged on the side edge of the trailing arm connecting seat, a main trailing arm is mounted on the shock absorber mounting seat, a shock absorber body is arranged at the top of the trailing arm connecting seat, and a rear suspension arm is mounted on the shock absorber body. A longitudinal arm connecting seat is arranged between the shock absorber main body and the shock absorber mounting seat, a bottom connecting seat is arranged at the bottom end of the shock absorber main body, and the bottom connecting seat is connected with the longitudinal arm connecting seat through a shock absorber connecting assembly. A fixed connecting block is arranged at the end of a fixed supporting rod in the shock absorber connecting assembly, when a shock absorber body or the fixed supporting rod is impacted and damaged, a user can replace the shock absorber body more conveniently, and the shock absorber connecting assembly arranged on a shock absorber mounting base is also convenient to disassemble; the maintenance difficulty of workers is greatly reduced, and disassembly and assembly are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension structures, in particular to a single trailing arm rear suspension structure. Background Art

[0002] The rear suspension is a component of a car. The rear suspension includes a rear axle, to which a cantilever and a shock absorber are connected. When in use, the cantilever and shock absorber are connected to the frame to support the rear end of the frame.

[0003] A search revealed a patent application in China with the publication number CN 221392903 U, which discloses a single-trailing-arm rear suspension structure mounted on a vehicle frame. The patent comprises a trailing arm connected to the frame, comprising a main trailing arm and an auxiliary trailing arm, the auxiliary trailing arm extending from the side of the main trailing arm and connected to the frame; a vertical swing arm connected to the trailing arm at its upper end and having a brake attached to its lower end, the brake being located below the trailing arm; and a shock absorber assembly connected to the frame at its upper end and the trailing arm at its lower end, comprising a shock absorber and a spring, the spring being sleeved around the shock absorber. This invention is advantageous in that it reduces width-wise space occupation, improves the trailing arm's ability to resist lateral forces, and offers a compact structure suitable for compact vehicles.

[0004] The suspension structure in the above patent still has certain deficiencies. The bottom of the shock absorber on the existing single-longitudinal arm rear suspension structure is directly connected to the shock absorber mounting seat through a fixed cross bar. When the vehicle encounters an accident and collides, the fixed cross bar and shock absorber are easily twisted or broken. The fixed cross bar makes it inconvenient for users to disassemble and replace the damaged shock absorber, and the entire suspension needs to be disassembled. The operation is cumbersome, greatly increases the difficulty of maintenance for workers, and is inconvenient for users. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a single-trailing-arm rear suspension structure, which solves the problem that the bottom of the shock absorber on the existing single-trailing-arm rear suspension structure is directly connected to the shock absorber mounting seat through a fixed cross bar. When the vehicle encounters an accident and collides, the fixed cross bar and shock absorber are easily twisted or broken. The fixed cross bar is not convenient for users to disassemble and replace the damaged shock absorber, and the entire suspension needs to be disassembled, which is cumbersome and greatly increases the difficulty of maintenance for workers and is inconvenient for users.

[0006] The utility model provides the following technical solution: a single trailing arm rear suspension structure, comprising a trailing arm connecting seat, a shock absorber mounting seat being provided on the side of the trailing arm connecting seat, a main trailing arm being installed on the shock absorber mounting seat, an auxiliary trailing arm being provided on the bottom side of the main trailing arm, a shock absorber body being provided on the top of the trailing arm connecting seat, a bottom connecting seat being provided at the bottom end of the shock absorber body, the bottom connecting seat being connected to the trailing arm connecting seat via a shock absorber connecting assembly;

[0007] The shock absorber connecting assembly includes a side connecting block arranged on the side of the bottom connecting seat, the side of the side connecting block is provided with a mounting groove, the mounting groove is provided with a fixed connecting block, the side of the fixed connecting block is connected to a fixed support rod, a fixing bolt is inserted through the side connecting block, the top of the fixing bolt passes through the middle of the fixed connecting block and the top of the side connecting block in sequence, the top of the fixing bolt is sleeved with a nut, and the fixing bolt is sleeved with a resistance spring, the top of the shock absorber mounting seat is provided with a connecting slot, the bottom end of the fixing support rod is inserted into the connecting slot, and the side of the shock absorber mounting seat is inserted with a side plug-in rod.

[0008] Preferred technical solution 1: The end of the side plug-in rod passes through the middle of the fixed support rod, and a fixing screw hole is opened on the side of the shock absorber mounting seat.

[0009] Preferred technical solution 2: A fixing screw is inserted through the middle of the end of the side plug-in rod, and the end of the fixing screw is inserted into the fixing screw hole.

[0010] Preferred technical solution three: a limiting slot is provided at the bottom of the connecting slot, a limiting plug is provided at the bottom end of the fixed support rod, and the limiting plug is inserted into the limiting slot.

[0011] This solution can make it more stable when the fixed support rod is inserted into the connecting slot.

[0012] Preferred technical solution four: the side plug-in rod consists of a horizontal plate and two vertical rods perpendicular to the horizontal plate.

[0013] This solution can make the side plug-in rod inserted into the fixed support rod more stable.

[0014] Preferred technical solution five: two slots are symmetrically opened on the inner wall of the connecting slot.

[0015] This solution enables the side plug-in rod to penetrate the fixed support rod and then be stably inserted into the connecting slot.

[0016] Compared with the prior art, the present invention provides a single trailing arm rear suspension structure with the following features:

[0017] Beneficial effects:

[0018] (1) The utility model provides a shock absorber connecting assembly between the shock absorber body and the shock absorber mounting seat, wherein the end of the fixed support rod in the shock absorber connecting assembly is provided with a fixed connecting block, and the middle part of the fixed connecting block is fixed by an inserted fixing bolt, and the end of the fixed support rod is inserted into the connecting slot in the shock absorber mounting seat. When the shock absorber body or the fixed support rod is damaged by impact, the user can directly disassemble the fixed support rod, making it more convenient for the user to replace the shock absorber body, and it is also more convenient to disassemble the shock absorber connecting assembly set on the shock absorber mounting seat, which greatly reduces the maintenance difficulty of workers and makes disassembly and assembly more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-section of the structure of the utility model;

[0021] Figure 3 For the utility model Figure 2 An enlarged structural diagram of the middle shock absorber connection assembly;

[0022] Figure 4 For the utility model Figure 3 A magnified view of the structure of the connection slot.

[0023] In the figure: 1. Trailing arm connection seat; 2. Shock absorber mounting seat; 3. Main trailing arm; 4. Auxiliary trailing arm; 5. Shock absorber body; 6. Bottom connection seat; 7. Shock absorber connection assembly;

[0024] 701, side connecting block; 702, mounting groove; 703, fixed connecting block; 704, fixed support rod; 705, fixing bolt; 706, nut; 707, resistance spring; 708, connecting slot; 709, limiting slot; 710, limiting plug-in block; 711, side plug-in rod; 712, fixing screw hole; 713, fixing screw. DETAILED DESCRIPTION

[0025] See also Figure 1-4 ,

[0026] Embodiment 1: A single trailing arm rear suspension structure includes a trailing arm connecting seat 1, a shock absorber mounting seat 2 is provided on the side of the trailing arm connecting seat 1, a main trailing arm 3 is installed on the shock absorber mounting seat 2, an auxiliary trailing arm 4 is provided on the bottom side of the main trailing arm 3, a shock absorber body 5 is provided on the top of the trailing arm connecting seat 1, a bottom connecting seat 6 is provided at the bottom end of the shock absorber body 5, and the bottom connecting seat 6 is connected to the trailing arm connecting seat 1 through a shock absorber connecting assembly 7.

[0027] The shock absorber connecting assembly 7 includes a side connecting block 701 arranged on the side of the bottom connecting seat 6, and a mounting groove 702 is opened on the side of the side connecting block 701. A fixed connecting block 703 is arranged in the mounting groove 702. The side of the fixed connecting block 703 is connected to a fixed support rod 704. A fixing bolt 705 is inserted through the side connecting block 701, and the top of the fixing bolt 705 passes through the middle of the fixed connecting block 703 and the top of the side connecting block 701 in sequence. A nut 706 is sleeved on the top of the fixing bolt 705, and a resistance spring 707 is sleeved on the fixing bolt 705.

[0028] A connecting slot 708 is provided at the top of the shock absorber mounting seat 2, and the bottom end of the fixed support rod 704 is inserted into the connecting slot 708. A side plug-in rod 711 is inserted at the side of the shock absorber mounting seat 2, and the end of the side plug-in rod 711 passes through the middle of the fixed support rod 704. A fixing screw hole 712 is provided at the side of the shock absorber mounting seat 2, and a fixing screw 713 is inserted through the middle of the end of the side plug-in rod 711, and the end of the fixing screw 713 is inserted into the fixing screw hole 712.

[0029] Example 2: The difference between this example and Example 1 is that a limiting slot 709 is provided at the bottom of the connecting slot 708, and a limiting plug block 710 is provided at the bottom end of the fixed support rod 704, and the limiting plug block 710 is inserted into the limiting slot 709.

[0030] This makes it more stable when the fixed support rod 704 is inserted into the connecting slot 708 .

[0031] Embodiment 3: The difference between this embodiment and embodiment 1 is that the side plug-in rod 711 is composed of a horizontal plate and two vertical rods perpendicular to the horizontal plate.

[0032] This makes the side plug-in rod 711 more stable when inserted into the fixed support rod 704 .

[0033] Embodiment 4: The difference between this embodiment and embodiment 1 is that two slots are symmetrically formed on the inner wall of the connecting slot 708 .

[0034] The side plug-in rod 711 passes through the fixed support rod 704 and is stably inserted into the connecting slot 708 .

[0035] In this embodiment, since the bottom of the shock absorber on the existing single-arm rear suspension structure is directly connected to the shock absorber mounting seat through a fixed cross bar, when the vehicle encounters an accident and collides, the fixed cross bar and shock absorber are easily twisted or broken. The fixed cross bar is not convenient for users to disassemble and replace the damaged shock absorber, and the entire suspension needs to be disassembled, which is cumbersome and greatly increases the difficulty of maintenance for workers and is inconvenient for users.

[0036] In summary, in a specific implementation, when the shock absorber body 5 and the shock absorber connecting assembly 7 installed on the vehicle are twisted and damaged by impact, the user can directly pull out the fixing bolt 705 inserted in the middle of the fixed connecting block 703, and the user can pull out the fixing bolt 705 from the side connecting block 701 by turning the nut 706.

[0037] Then, the user screws the fixing screw 713 inserted in the end of the side plug-in rod 711 to pull the fixing screw 713 out of the fixing screw hole 712, and then the user can easily pull out the side plug-in rod 711 from the fixing support rod 704, so that the user can easily pull out the fixing support rod 704 from the connecting slot 708, and can quickly disassemble the shock absorber body 5 and the shock absorber mounting seat 2, making it more convenient for the user to replace the shock absorber body 5, and it is also more convenient to disassemble the shock absorber connecting assembly 7 set on the shock absorber mounting seat 2. Moreover, the shock absorber connecting assembly 7 is connected to the shock absorber mounting seat 2 through the provided shock absorber connecting assembly 7. Even if the shock absorber connecting assembly 7 generates torque, no large impact force will be transmitted to the shock absorber mounting seat 2, thereby providing certain protection for the shock absorber mounting seat 2, making it more convenient for the user to use.

Claims

1. A single trailing arm rear suspension structure, comprising a trailing arm connecting seat (1), characterized in that: A shock absorber mounting seat (2) is provided on the side of the longitudinal arm connecting seat (1), a main longitudinal arm (3) is installed on the shock absorber mounting seat (2), an auxiliary longitudinal arm (4) is provided on the bottom side of the main longitudinal arm (3), a shock absorber body (5) is provided on the top of the longitudinal arm connecting seat (1), a bottom connecting seat (6) is provided at the bottom end of the shock absorber body (5), and the bottom connecting seat (6) is connected to the longitudinal arm connecting seat (1) via a shock absorber connecting assembly (7); The shock absorber connection assembly (7) comprises a side connection block (701) arranged on the side of the bottom connection seat (6), a mounting groove (702) is provided on the side of the side connection block (701), a fixed connection block (703) is provided in the mounting groove (702), a fixed support rod (704) is connected to the side of the fixed connection block (703), a fixing bolt (705) is inserted through the side connection block (701), and the top end of the fixing bolt (705) is sequentially inserted through the fixing bolt (705). The fixing bolt (705) passes through the middle of the fixed connection block (703) and the top of the side connection block (701), and the top end of the fixing bolt (705) is sleeved with a nut (706). The fixing bolt (705) is sleeved with a resistance spring (707). The top of the shock absorber mounting seat (2) is provided with a connection slot (708), the bottom end of the fixed support rod (704) is inserted into the connection slot (708), and the side of the shock absorber mounting seat (2) is inserted with a side plug rod (711).

2. The single trailing arm rear suspension structure according to claim 1, characterized in that: The end of the side plug-in rod (711) passes through the middle of the fixed support rod (704), and a fixing screw hole (712) is provided on the side of the shock absorber mounting seat (2).

3. The single trailing arm rear suspension structure according to claim 2, characterized in that: A fixing screw rod (713) is inserted through the middle of the end of the side plug-in rod (711), and the end of the fixing screw rod (713) is inserted into the fixing screw hole (712).

4. The single trailing arm rear suspension structure according to claim 3, characterized in that: A limiting slot (709) is provided at the bottom of the connecting slot (708), and a limiting plug block (710) is provided at the bottom end of the fixed support rod (704), and the limiting plug block (710) is inserted into the limiting slot (709).

5. The single trailing arm rear suspension structure according to claim 4, characterized in that: The side plug-in rod (711) consists of a horizontal plate and two vertical rods perpendicular to the horizontal plate.

6. The single trailing arm rear suspension structure according to claim 5, characterized in that: The inner wall of the connecting slot (708) is symmetrically provided with two slots.

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