Swing arm structure for stability of two wheels of vehicle

Abstract

The utility model relates to a stable swing arm structure for two wheels of a vehicle. Comprising a frame, a wheel suspension frame and a support fixedly connected with the frame, and a support center hole is formed in the support and located on the left-right symmetry line of the support. A swing arm center hole is formed in the center of the swing arm, a swing arm left connecting hole is formed in the left end portion of the swing arm, a swing arm right connecting hole is formed in the right end portion of the swing arm, and the swing arm left connecting hole and the swing arm right connecting hole are arranged in a bilateral symmetry mode with the swing arm center hole as the left and right. A central shaft penetrates through the central hole of the bracket and the central hole of the swing arm for connection; the swing arm left connecting hole is fixedly connected with a left spring of the wheel suspension bracket, and the swing arm right connecting hole is fixedly connected with a right spring of the wheel suspension bracket. According to the technical scheme, when the left wheel and the right wheel swing up and down, the swing arms can compensate the head warping distance of the wheels so as to achieve the purpose of no head warping, so that a vehicle runs more stably, and the long-term problem about the safety and comfort of the vehicle head warping in the market is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to the running stability of left and right wheels of a motor vehicle when turning. Background Art

[0002] Usually, because the center of gravity of a motor vehicle is located at the rear, when the speed reaches a certain level during driving, when turning with the minimum radius, one of the inner wheels will often tilt up, resulting in a "tip-up" phenomenon. The most common "tip-up" phenomenon is the front wheel. The existing solution is to add a counterweight to the front of the vehicle, lengthen and soften the front suspension coil spring, increase the stiffness of the rear suspension coil spring, and add an anti-roll bar to the rear wheel suspension. This method can move the center of gravity of the vehicle forward, increase the downward swing of the front suspension wheel, and keep the body from tilting as much as possible during turning, and prevent the front wheel from tilting. However, this method has the following disadvantages: (1) Customers do not accept the front counterweight; (2) The front counterweight will have a negative impact on the front wheel and suspension, such as the wheel caster angle; (3) A relatively rigid anti-roll bar is required; (4) If the anti-roll bar installation position changes slightly, the front wheel will still tilt up, and the performance will be unstable; (5) It affects the hardness of the suspension, and the suspension needs to be adjusted to meet customer requirements. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art, utilize the lever principle and adopt a swing arm structure device to achieve force compensation and solve the safety and comfort problems of vehicle nose tilt.

[0004] The technical solution of the present utility model is a vehicle two-wheel stability swing arm structure, including a frame and a wheel suspension frame, characterized in that it also includes a bracket fixedly connected to the frame and the wheel suspension frame, the bracket is provided with a bracket center hole, and the bracket center hole is located on the left-right symmetry line of the bracket; it also includes a swing arm, the center of the swing arm is provided with a swing arm center hole, the left end of the swing arm is provided with a swing arm left connecting hole, and the right end of the swing arm is provided with a swing arm right connecting hole, the left connecting hole of the swing arm and the right connecting hole of the swing arm are arranged symmetrically with respect to the swing arm center hole; a center shaft is passed through the center hole of the bracket and the center hole of the swing arm for connection; the left connecting hole of the swing arm is fixedly connected to the left spring of the wheel suspension frame, and the right connecting hole of the swing arm is fixedly connected to the right spring of the wheel suspension frame.

[0005] In the above-mentioned vehicle two-wheel stability swing arm structure, the central axis passing through the center hole of the bracket and the center hole of the swing arm is a rubber axis, that is, a circle of thick rubber body is wrapped around the metal shaft; the inner wall of the center hole of the bracket is in close contact with the rubber body of the central axis, and the inner wall of the center hole of the swing arm is in close contact with the rubber body of the central axis.

[0006] The above-mentioned vehicle two-wheel stability swing arm structure is provided with a left limit plate device and a right limit plate device on the bracket, and the left limit plate device and the right limit plate device are symmetrically arranged with respect to the center hole of the swing arm.

[0007] The above-mentioned vehicle two-wheel stability swing arm structure, the bracket is a double-layer gantry, the double-layer gantry is divided into a front gantry and a rear gantry, the swing arm is arranged between the front gantry and the rear gantry; the front gantry has a front gantry center hole, the rear gantry has a rear gantry center hole, the front gantry center hole and the swing arm center hole and the rear gantry center hole are on the same center line; the left limiting plate device and the right limiting plate device include a left connecting plate and a right connecting plate fixed between the top of the front gantry and the top of the rear gantry, a left connecting plate limiting screw hole is provided on the left connecting plate, a right connecting plate limiting screw hole is provided on the right connecting plate, a left limiting screw is provided in the left connecting plate limiting hole, and a right limiting screw is provided in the right connecting plate limiting hole.

[0008] The above-mentioned vehicle two-wheel stability swing arm structure, the left connecting hole of the swing arm is fixedly connected to the left spring of the wheel suspension frame by a left pin, the right connecting hole of the swing arm is fixedly connected to the right spring of the wheel suspension frame by a right pin, and the swing arm and the wheel suspension frame, the left spring and the right spring are connected in a shape similar to an isosceles trapezoid; the left connecting hole of the swing arm is a strip hole, and the left pin can be slidably displaced in the strip hole to adjust the toe of the wheel; the right connecting hole of the swing arm is a strip hole, and the right pin can be slidably displaced in the strip hole to adjust the toe of the wheel.

[0009] In the above-mentioned vehicle dual-wheel stability swing arm structure, the left connecting hole of the swing arm is a transverse strip hole; and the right connecting hole of the swing arm is a transverse strip hole.

[0010] In the above-mentioned vehicle dual-wheel stability swing arm structure, the left connecting hole of the swing arm is a vertical strip hole; and the right connecting hole of the swing arm is a vertical strip hole.

[0011] By adopting the technical solution of the utility model, the swing arm can swing around the middle axis. When the left and right wheels swing up and down, the swing arm will compensate for the distance of the wheel tilting so as to achieve "no tilting", thereby making the vehicle driving more stable and solving the problem of safety and comfort of vehicle tilting that has long plagued the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the combination of a vehicle dual-wheel stability swing arm structure, a vehicle frame and a wheel suspension frame according to the present invention.

[0013] Figure 2 This is a schematic diagram of the combination of a vehicle dual-wheel stability swing arm structure and a wheel suspension frame according to the present invention.

[0014] Figure 3 This is an exploded view of a swing arm device of a dual-wheel stability swing arm structure of a vehicle according to the present invention. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings.

[0016] like Figure 1 、 Figure 2 、 Figure 3 The present invention shows an embodiment of a two-wheel stability swing arm structure for a vehicle. The structure comprises a vehicle frame 1 and a wheel suspension frame 2, a bracket 3 fixedly connected to the vehicle frame 1 and the wheel suspension frame 2, a bracket 3 having a bracket center hole 31 disposed on a line of symmetry between the left and right sides of the bracket 3, and a swing arm 4 having a central swing arm center hole 41 disposed therein. A left swing arm connecting hole 421 is disposed at a left end 42 of the swing arm 4, and a right swing arm connecting hole 431 is disposed at a right end 43 of the swing arm 4. The left swing arm connecting hole 421 and the right swing arm connecting hole 431 are disposed symmetrically about the swing arm center hole 41. A central shaft 5 extends through the bracket center hole 31 and the swing arm center hole 41, connecting them. The left swing arm connecting hole 421 is fixedly connected to the left spring 21 of the wheel suspension frame 2, while the right swing arm connecting hole 431 is fixedly connected to the right spring 22 of the wheel suspension frame 2. In this way, when the left and right wheels swing up and down, such as when the vehicle is turned by centrifugal force, the inner wheel will "lift off". At this time, the swing arm 4 will compensate for the distance the wheel lifts off to achieve "no lift off", thereby making the vehicle more stable and solving the problem of vehicle lift off safety and comfort that has long plagued the market.

[0017] Furthermore, the central shaft 5 passing through the bracket center hole 31 and the swing arm center hole 41 is a rubber shaft, consisting of a metal shaft 51 covered with a thick rubber body 52. ​​The inner wall of the bracket center hole 31 is in close contact with the central shaft rubber body 52, and the inner wall of the swing arm center hole 41 is in close contact with the central shaft rubber body 52. ​​This close contact is similar to an interference fit, meaning that the central shaft 5 does not slide or rotate within the bracket center hole 31 and the swing arm center hole 41. As a result, when the wheel swings up and down, the central shaft 5 rotates relative to the bracket center hole 31 and the swing arm center hole 41 only due to the deformation of the central shaft rubber body 52. ​​This dampens the rotation of the swing arm 4, preventing vibration caused by rapid swing frequency and improving stability.

[0018] Furthermore, the bracket 3 is a double-layer gantry, which is divided into a front gantry 32 and a rear gantry 33. The swing arm 4 is arranged between the front gantry 32 and the rear gantry 33. The front gantry 32 has a front gantry center hole, and the rear gantry 33 has a rear gantry center hole. The front gantry center hole is on the same center line as the swing arm center hole 41 and the rear gantry center hole. A left limit plate device and a right limit plate device are fixed between the top of the front gantry 32 and the top of the rear gantry 33. The left limit plate device and the right limit plate device include a left connecting plate 34 and a right connecting plate 35. The left connecting plate 34 is provided with a left connecting plate limit screw hole 341, and the right connecting plate 35 is provided with a right connecting plate limit screw hole 351. The left connecting plate limit hole 341 is provided with a left limit screw 342, and the right connecting plate limit hole 351 is provided with a right limit screw 352. In this way, by setting the left and right limit screws 342 and 352, the swing amplitude of the swing arm 4 can be adjusted, that is, the amplitude of the up and down movement of the left and right wheels can be adjusted. At the same time, the swing arm 4 can be completely locked, restoring the original vehicle suspension state. The left swing arm connecting hole 421 is fixedly connected to the left spring 21 of the wheel suspension frame 2 via a left pin 61. The left swing arm connecting hole 421 is a horizontal bar hole, and the left pin 61 is slidable within the bar hole. The right swing arm connecting hole 431 is fixedly connected to the right spring 22 of the wheel suspension frame 2 via a right pin 62. The right swing arm connecting hole 431 is a bar hole, and the right pin 62 is slidable within the bar hole. Of course, the left swing arm connecting hole 421 and the right swing arm connecting hole 431 can also be vertical bar holes. The purpose of using bar holes is to adjust the toe of the vehicle's front wheels by adjusting the position or displacement of the left and right pins 61 and 62.

[0019] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A vehicle dual-wheel stability swing arm structure, comprising a vehicle frame and a wheel suspension frame, characterized in that It also includes a bracket fixedly connected to the vehicle frame and the wheel suspension frame, the bracket is provided with a bracket center hole, and the bracket center hole is located on the left-right symmetry line of the bracket; it also includes a swing arm, the swing arm is provided with a swing arm center hole in the center of the swing arm, a swing arm left connecting hole is provided at the left end of the swing arm, and a swing arm right connecting hole is provided at the right end of the swing arm, and the swing arm left connecting hole and the swing arm right connecting hole are arranged symmetrically with respect to the swing arm center hole; a center shaft is passed through the bracket center hole and the swing arm center hole for connection; the swing arm left connecting hole is fixedly connected to the left spring of the wheel suspension frame, and the swing arm right connecting hole is fixedly connected to the right spring of the wheel suspension frame.

2. A vehicle dual-wheel stability swing arm structure according to claim 1, characterized in that The central shaft passing through the center hole of the bracket and the center hole of the swing arm is a rubber shaft, that is, a circle of thick rubber body is wrapped around the metal shaft; the inner wall of the center hole of the bracket is in close contact with the rubber body of the central shaft, and the inner wall of the center hole of the swing arm is in close contact with the rubber body of the central shaft.

3. A vehicle dual-wheel stability swing arm structure according to claim 1 or 2, characterized in that A left limit plate device and a right limit plate device are provided on the bracket, and the left limit plate device and the right limit plate device are symmetrically arranged with respect to the central hole of the swing arm.

4. The vehicle dual-wheel stability swing arm structure according to claim 3, characterized in that The bracket is a double-layer gantry, which is divided into a front gantry and a rear gantry, and the swing arm is arranged between the front gantry and the rear gantry; the front gantry has a front gantry center hole, and the rear gantry has a rear gantry center hole, and the front gantry center hole is on the same center line as the swing arm center hole and the rear gantry center hole; the left limiting plate device and the right limiting plate device include a left connecting plate and a right connecting plate fixed between the top of the front gantry and the top of the rear gantry, a left connecting plate limiting screw hole is provided on the left connecting plate, a right connecting plate limiting screw hole is provided on the right connecting plate, a left limiting screw is provided in the left connecting plate limiting hole, and a right limiting screw is provided in the right connecting plate limiting hole.

5. The vehicle dual-wheel stability swing arm structure according to claim 4, characterized in that The left connecting hole of the swing arm is fixedly connected to the left spring of the wheel suspension frame by a left pin, and the right connecting hole of the swing arm is fixedly connected to the right spring of the wheel suspension frame by a right pin. The swing arm and the wheel suspension frame, the left spring and the right spring are connected in a shape similar to an isosceles trapezoid; the left connecting hole of the swing arm is a strip hole, and the left pin can be slidably displaced in the strip hole to adjust the toe of the wheel; the right connecting hole of the swing arm is a strip hole, and the right pin can be slidably displaced in the strip hole to adjust the toe of the wheel.

6. The vehicle dual-wheel stability swing arm structure according to claim 5, characterized in that The left connecting hole of the swing arm is a transverse strip hole; the right connecting hole of the swing arm is a transverse strip hole.

7. The vehicle dual-wheel stability swing arm structure according to claim 5, characterized in that The left connecting hole of the swing arm is a vertical strip hole; the right connecting hole of the swing arm is a vertical strip hole.

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