Swing arm structure for stability of two wheels of vehicle

Abstract

The invention relates to a double-wheel stable swing arm structure 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'no head warping ', so that a vehicle runs more stably, and the long-term problem about the safety and comfort of vehicle head warping in the market is solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle engineering technology, and in particular to the stability of the left and right wheels when a motor vehicle is turning. Background Technology

[0002] Motor vehicles typically have a rearward center of gravity, and when driving at a certain speed, the innermost wheel often lifts up during minimum radius turns, resulting in a "wheel-up" phenomenon. The most common occurrence is the front wheel "wheel-up". The existing solution is to add a counterweight to the front of the vehicle, lengthen and soften the front suspension coil springs, increase the stiffness of the rear suspension coil springs, and add an anti-roll bar to the rear suspension. This method can shift the vehicle's center of gravity forward, increase the downward swing of the front suspension wheels, and at the same time keep the vehicle body as flat as possible during turns, preventing the front wheel from lifting up. However, this method has the following disadvantages: (1) the customer does not approve of the front counterweight; (2) the front counterweight will have adverse effects on the front wheels and suspension, such as the wheel camber angle; (3) a large-stiffness anti-roll bar is required; (4) if the anti-roll bar installation position is slightly changed, the front wheel will still lift up, resulting in unstable performance; (5) it affects the suspension stiffness, and the suspension needs to be adjusted to meet the customer's requirements. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art by using a lever principle and a swing arm structure to achieve force compensation and solve the safety and comfort problems of vehicle wheelies.

[0004] This invention provides a vehicle dual-wheel stability swing arm structure, comprising a vehicle frame and a wheel suspension frame. The structure is characterized by further including a bracket fixedly connected to the vehicle frame, the bracket having a central hole located on a line of symmetry. It also includes a swing arm with a central hole at its center, a left connecting hole at its left end, and a right connecting hole at its right end, the left and right connecting holes being symmetrically arranged about the central hole. A central shaft passes through the central hole of the bracket and the central 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 aforementioned vehicle dual-wheel stability swing arm structure, the central shaft passing through the central hole of the bracket and the central hole of the swing arm is a rubber shaft, that is, a thick rubber body is wrapped around the metal shaft; the inner wall of the central hole of the bracket is in close contact with the rubber body of the central shaft, and the inner wall of the central hole of the swing arm is in close contact with the rubber body of the central shaft.

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

[0007] The aforementioned vehicle dual-wheel stability swing arm structure includes a double-layer gantry frame as the support, which consists of a front gantry and a rear gantry. The swing arm is positioned between the front gantry and the rear gantry. The front gantry has a central hole, and the rear gantry has a central hole. The central holes of the front gantry, the swing arm, and the rear gantry are aligned on the same centerline. The left and right limiting plate devices 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. The left connecting plate has a left connecting plate limiting screw hole, and the right connecting plate has a right connecting plate limiting screw hole. 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 aforementioned vehicle dual-wheel stability control arm structure comprises a left connecting hole of the control arm and a left spring of the wheel suspension frame, fixedly connected by a left pin, and a right connecting hole of the control arm and a right spring of the wheel suspension frame, fixedly connected by a right pin. The control arm, the wheel suspension frame, the left spring, and the right spring, when connected, resemble an isosceles trapezoid. The left connecting hole of the control arm is a strip-shaped hole, within which the left pin can slide to adjust the wheel toe-in. The right connecting hole of the control arm is also a strip-shaped hole, within which the right pin can slide to adjust the wheel toe-in.

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

[0010] In the aforementioned vehicle dual-wheel stability swing arm structure, 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.

[0011] By adopting the technical solution of this invention, the swing arm can swing around the central axis. When the left and right wheels swing up and down, the swing arm will compensate for the distance of wheel wheel lift, so as to achieve "no wheel lift", thereby making the vehicle drive more stable and solving the long-standing market problem of vehicle wheel lift safety and comfort.

[0012] Instruction manual illustrations

[0013] Figure 1 This is a schematic diagram of the combination of a vehicle dual-wheel stability swing arm structure with the vehicle frame and wheel suspension frame according to the present invention.

[0014] 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.

[0015] Figure 3 This is an exploded view of a vehicle dual-wheel stability swing arm structure swing arm device according to the present invention. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings.

[0017] like Figure 1 , Figure 2 , Figure 3 The diagram illustrates an embodiment of a vehicle dual-wheel stability swing arm structure according to the present invention. It includes a vehicle frame 1 and a wheel suspension frame 2, and a bracket 3 fixedly connected to the vehicle frame 1 and the wheel suspension frame 2. The bracket 3 has a central hole 31 located on the left-right symmetrical line of the bracket 3. It also includes a swing arm 4, with a central hole 41 at its center, a left connecting hole 421 at its left end 42, and a right connecting hole 431 at its right end 43. The left and right connecting holes 421 and 431 are symmetrically arranged with respect to the central hole 41. A central shaft 5 passes through the central hole 31 of the bracket and the central hole 41 of the swing arm, connecting them. The left connecting hole 421 is fixedly connected to the left spring 21 of the wheel suspension frame 2, and the right connecting hole 431 is fixedly connected to the right spring 22 of the wheel suspension frame 2. Thus, when the left and right wheels swing up and down, if the vehicle is subjected to centrifugal force when turning, the inner wheel will "lift its nose". At this time, the swing arm 4 will compensate for the distance of the wheel lifting its nose to prevent "lifting its nose", thereby making the vehicle more stable and solving the long-standing market problem of vehicle nose lifting safety and comfort.

[0018] In a further embodiment, the central shaft 5, which passes through the central hole 31 of the bracket and the central hole 41 of the swing arm, is a rubber shaft, that is, a thick rubber body 52 is wrapped around the metal shaft 51. The inner wall of the central hole 31 of the bracket is in close contact with the rubber body 52 of the central shaft, and the inner wall of the central hole 41 of the swing arm is in close contact with the rubber body 52 of the central shaft. This close contact is similar to an interference fit, that is, the central shaft 5 does not slide or rotate within the central holes 31 of the bracket and the central hole 41 of the swing arm. In this way, when the wheel swings up and down, the central shaft 5 only rotates relative to the central shaft rubber body 52 due to deformation within the central holes 31 of the bracket and the central hole 41 of the swing arm. In this way, the rotation of the swing arm 4 is damped, which can avoid vibration due to high swing frequency and increase stability.

[0019] In a further embodiment, the support 3 is a double-layer gantry frame, consisting of a front gantry 32 and a rear gantry 33, with the swing arm 4 positioned between the front gantry 32 and the rear gantry 33. The front gantry 32 has a central hole, and the rear gantry 33 has a central hole, with the central holes of the front gantry, the swing arm 41, and the rear gantry all aligned on the same centerline. A left limiting plate device and a right limiting plate device are fixed between the top of the front gantry 32 and the top of the rear gantry 33. The left and right limiting plate devices include a left connecting plate 34 and a right connecting plate 35. The left connecting plate 34 has a left connecting plate limiting screw hole 341, and the right connecting plate 35 has a right connecting plate limiting screw hole 351. A left limiting screw 342 is provided in the left connecting plate limiting hole 341, and a right limiting screw 352 is provided in the right connecting plate limiting hole 351. Thus, by setting the left limit screw 342 and the right limit screw 352, the swing amplitude of the swing arm 4 can be adjusted, that is, the vertical movement amplitude of the left and right wheels can be adjusted. At the same time, the swing arm 4 can be completely locked, restoring the original suspension state. The left connecting hole 421 of the swing arm is fixedly connected to the left spring 21 of the wheel suspension frame 2 by the left pin 61. The left connecting hole 421 of the swing arm is a horizontal strip hole, and the left pin 61 can slide within the strip hole. The right connecting hole 431 of the swing arm is fixedly connected to the right spring 22 of the wheel suspension frame 2 by the right pin 62. The right connecting hole 431 of the swing arm is a strip hole, and the right pin 62 can slide within the strip hole. Of course, the left connecting hole 421 of the swing arm can also be a vertical strip hole, and the right connecting hole 431 of the swing arm can also be a vertical strip hole. The purpose of using strip holes is that the toe-in of the front wheels of the vehicle can be adjusted by adjusting the position or movement of the left pin 61 and the right pin 62.

[0020] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A vehicle dual-wheel stability swing arm structure, comprising a vehicle frame and wheel suspension brackets, characterized in that... It also includes a bracket fixedly connected to the vehicle frame and wheel suspension, the bracket having a central hole located on the left-right symmetrical line of the bracket; it also includes a swing arm, the swing arm having a central hole in its center, a left connecting hole at the left end of the swing arm, and a right connecting hole at the right end of the swing arm, the left and right connecting holes being symmetrically arranged about the central hole; a central shaft is inserted through the central hole of the bracket and the central 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, and the right connecting hole of the swing arm is fixedly connected to the right spring of the wheel suspension.

2. The vehicle dual-wheel stability swing arm structure according to claim 1, characterized in that... The central shaft passing through the central hole of the bracket and the central hole of the swing arm is a rubber shaft, that is, a thick rubber body is wrapped around the metal shaft; the inner wall of the central hole of the bracket is in close contact with the rubber body of the central shaft, and the inner wall of the central 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... The bracket is provided with a left limiting plate device and a right limiting plate device, which are arranged symmetrically with respect to the center hole of the swing arm.

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

5. A 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, the wheel suspension frame, the left spring, and the right spring, when connected, resemble an isosceles trapezoid. The left connecting hole of the swing arm is a strip-shaped hole, and the left pin can slide within the strip-shaped hole to adjust the toe-in of the wheel. The right connecting hole of the swing arm is a strip-shaped hole, and the right pin can slide within the strip-shaped hole to adjust the toe-in of the wheel.

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

7. A 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.

Images