Double-fork-arm independent front suspension device suitable for small truck type with non-bearing body

Abstract

The utility model relates to a double-fork-arm independent front suspension device suitable for a small truck type with a non-bearing body, which comprises a suspension guide component and a connecting component arranged on a frame, the suspension guide component comprises a suspension guide component and a shock absorber assembly, the shock absorber assembly is arranged on the suspension guide component and is provided with an elastic element, and the elastic element is arranged on the suspension guide component. The suspension guide component is arranged on the connecting component and used for being connected with a steering knuckle of a brake system, and the shock absorber assembly is connected with the connecting component. By means of the structure, physical structure separation of the suspension guiding component and the elastic element of the double-fork-arm independent suspension is achieved, the elastic bearing deformation function and the guiding function of the suspension can be decoupled, and the problems that a small truck type adopting a steel plate spring non-independent suspension is poor in smoothness, deviates in the braking direction and is poor in linear driving stability are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of non-bearing body, especially to a double wishbone independent front suspension device suitable for non-bearing body small truck type. BACKGROUND

[0002] Non-bearing body (independent frame) small truck type is configured with steel plate spring non-independent front suspension. The steel plate spring is a guiding element and an elastic element in the suspension. Since the non-bearing body small truck type is configured with the steel plate spring non-independent front suspension, the steel plate spring is a guiding element and an elastic element, and the following problems exist.

[0003] Poor smoothness: due to the non-independence of the steel plate spring, the wheels influence each other when jumping, causing the body to vibrate or tilt, affecting the smoothness.

[0004] Brake direction deviation: it may be that the left and right wheels are unevenly distributed in braking force, or there are problems in the brake system, such as air in the sub-pump, brake pads need to be replaced, etc.

[0005] Poor straight-line driving stability: the elastic load deformation function and the guiding function of the suspension cannot be completely decoupled, affecting the straight-line driving stability.

[0006] Therefore, there is an urgent need for a double wishbone independent front suspension device suitable for non-bearing body small truck type, which separates the physical structure of the guiding element and the elastic element of the double wishbone independent suspension, and the suspension elastic load deformation function and the guiding function can be decoupled. UTILITY MODEL CONTENTS

[0007] Therefore, the utility model provides a double wishbone independent front suspension device suitable for non-bearing body small truck type, which separates the physical structure of the guiding element and the elastic element of the double wishbone independent suspension, and the suspension elastic load deformation function and the guiding function can be decoupled.

[0008] The double wishbone independent front suspension device suitable for non-bearing body small truck type provided by the utility model adopts the following technical scheme:

[0009] A double wishbone independent front suspension device suitable for non-bearing body small truck type, comprising a suspension guiding member and a connecting member arranged on a frame, the suspension guiding member comprising a suspension guiding member and a shock absorber assembly, the shock absorber assembly being arranged on the suspension guiding member, the shock absorber assembly having an elastic element, the suspension guiding member being arranged on the connecting member, the suspension guiding member being used to connect with a steering knuckle of a brake system, and the shock absorber assembly being connected with the connecting member.

[0010] Optionally, the suspension guiding member comprises an upper wishbone, the upper wishbone being arranged on the left and right sides of the frame respectively, and the upper wishbone being connected with the connecting member.

[0011] Optionally, the vehicle frame further comprises a sub-frame, the suspension guiding member comprises a lower fork arm, the shock absorber assembly is arranged on the lower fork arm, and the lower fork arm is connected with the sub-frame through the connecting assembly I.

[0012] Optionally, the connecting member has a fitting surface which is fitted with the upper wing surface and the width surface of the vehicle frame, and the fitting surface is provided with a boss.

[0013] Optionally, the connecting member is provided with a lug, the lug is provided with a mounting hole I, a sliding shaft tube I is arranged in the mounting hole I in the axial direction of the mounting hole I in a sliding fit, the sliding shaft tube I is provided with a limiting portion I for limiting rotation of the sliding shaft tube I in the mounting hole I, and the sliding shaft tube I is arranged on the upper fork arm.

[0014] Optionally, the connecting member has a mounting and positioning surface of the shock absorber assembly, the shock absorber assembly further comprises a damper, the elastic element is a coil spring, the bottom of the damper is arranged on the lower fork arm, the top of the damper is connected with the connecting member, and the coil spring is coaxially sleeved on the damper.

[0015] Optionally, the lower fork arm is provided with a sliding shaft tube II, the lower fork arm is provided with a mounting hole II, the sliding shaft tube II is provided with a limiting portion II for limiting rotation of the sliding shaft tube II in the mounting hole II, and the sliding shaft tube II is arranged on the shock absorber assembly.

[0016] Optionally, the fork arm has a ball pin assembly, and the fork arm is connected with a steering knuckle of a brake system through the ball pin assembly.

[0017] Optionally, the sub-frame has a lower fork arm bushing, and the lower fork arm is connected with the sub-frame through the lower fork arm bushing.

[0018] Optionally, the upper fork arm and the lower fork arm are integrally formed by pressure casting.

[0019] In conclusion, the utility model has at least one of the following beneficial technical effects: the structure separates the suspension guiding member and the elastic element of the double-fork-arm independent suspension, decouples the suspension elastic bearing deformation function and the guiding function, and solves the problems of poor smoothness, brake direction deviation and poor straight-line driving stability of the small truck type using the steel plate spring non-independent suspension. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the embodiment of the utility model;

[0021] Figure 2 is the connecting member structure schematic diagram of the embodiment of the utility model;

[0022] Figure 3 is a schematic view of a connection between a frame and a connecting member according to an embodiment of the present application;

[0023] Figure 4 is a schematic view of a sub-frame structure according to an embodiment of the present application;

[0024] Figure 5 is a schematic view of a damper assembly according to an embodiment of the present application;

[0025] Figure 6 is a schematic view of an upper fork arm structure according to an embodiment of the present application;

[0026] Figure 7 is a schematic view of a structure of a vehicle according to an embodiment of the present application; Figure 2

[0027] is a schematic view of a structure of a vehicle according to an embodiment of the present application; Figure 8 Figure 2 is a schematic view of a structure of a vehicle according to an embodiment of the present application;

[0028] Figure 9 Figure 2 is a schematic view of a structure of a vehicle according to an embodiment of the present application;

[0029] Figure 10 is a schematic view of a structure of a vehicle according to an embodiment of the present application; Figure 2

[0030] is a schematic view of a structure of a vehicle according to an embodiment of the present application; Figure 11 Figure 2 is a schematic view of a lower fork arm structure according to an embodiment of the present application;

[0031] Figure 12 is a schematic view of a structure of a vehicle according to an embodiment of the present application;

[0032] Figure 13 Figure 12 is a schematic view of a structure of a vehicle according to an embodiment of the present application.

[0033] Explanation of reference numerals: 1, connecting member; 2, upper fork arm; 3, lower fork arm; 4, damper assembly; 41, damper; 42, coil spring; 5, frame; 6, sub-frame; 7, steering knuckle; 8, damper mounting hole; 9, widthwise surface mounting hole; 10, upper wing surface mounting hole; 11, upper wing surface abutting surface; 12, widthwise surface abutting surface; 13, longitudinal beam abutting surface; 14, longitudinal beam mounting hole; 15, positioning pin; 16, lower fork arm bushing; 17, boss; 18, raised boss; 19, lower fork arm abutting surface; 20, upper fork arm ball pin; 21, support lug; 22, sliding axle tube 1; 23, limiting portion 1; 24, sliding axle tube 2; 25, limiting portion 2; 26, damper abutting surface; 27, lower fork arm ball pin. DETAILED DESCRIPTION

[0034] The present application will be further described below with reference to the accompanying drawings. Figures 1-13 The present application will be further described below with reference to the accompanying drawings.​​​​

[0035] The utility model discloses a kind of double wishbone independent front suspension devices suitable for non-load-bearing body small truck type.

[0036] Refer to Figures 1-13 A double wishbone independent front suspension device suitable for non-load-bearing body small truck type includes suspension guide member and the connecting member 1 of setting in frame 5, suspension guide member includes suspension guide member and shock absorber assembly 4, shock absorber assembly 4 is set to suspension guide member, the shock absorber assembly 4 has elastic element, suspension guide member is set to connecting member 1, suspension guide member is used to be connected with knuckle 7 of brake system, shock absorber assembly 4 is connected with connecting member 1.This structure realizes the suspension guide member and elastic element physical structure separation of double wishbone independent suspension, suspension elastic load deformation function and guiding function can be decoupled, solve the problem that small truck type using steel plate spring non-independent suspension exists poor smoothness, brake direction deviation, poor straight-line driving stability.

[0037] In the embodiment, connecting member 1 is a cutting finishing piece after casting forming, to ensure the suspension upper wishbone 2, shock absorber installation hard point precision.

[0038] In the embodiment, connecting member 1 is screwed with frame 5, and two connecting members 1 are arranged on the left and right sides of frame 5 respectively.

[0039] In the embodiment, suspension guide member includes upper wishbone 2 and lower wishbone 3, and upper wishbone 2 is arranged on the left and right sides of frame 5 respectively, and upper wishbone 2 is connected with connecting member 1. Upper wishbone 2 and lower wishbone 3 are arranged on each connecting member 1, and upper wishbone 2 and lower wishbone 3 are both cast bodies and have ball pin assemblies. Upper wishbone 2 is symmetrically arranged on the left and right sides, and lower wishbone 3 is symmetrically arranged on the left and right sides.

[0040] Among them, lug 21 is arranged on connecting member 1 to form an upper wishbone 2 bushing mounting portion, mounting hole one is formed on lug 21, sliding shaft tube one 22 is slidably arranged in mounting hole one along the axial direction of mounting hole one, sliding shaft tube one 22 has limiting portion one 23, limiting portion one 23 is a flat surface formed on sliding shaft tube one 22 to form an anti-rotation flat surface, and the limiting portion is used to limit the rotation of sliding shaft tube one 22 in mounting hole one. Sliding shaft tube one 22 is arranged on upper wishbone 2, so that it has no relative rotation freedom with respect to connecting member 1, and the problems of insufficient thread clamping force and clamping force attenuation caused by the difficulty of casting opening can be effectively avoided.

[0041] Similarly, the lower fork arm 3 is provided with a sliding shaft tube two 24, the lower fork arm 3 is provided with a mounting hole two, the sliding shaft tube two 24 is provided with a limiting part two, the limiting part two 25 is used for limiting the rotation of the sliding shaft tube two 24 in the mounting hole two, and the sliding shaft tube two 24 is arranged in the shock absorber assembly 4. Further, the bottom of the damper 41 is provided with a bushing, and the bushing is a vulcanized bushing with rigid inner and outer bushing tubes. The bushing has a lower fork arm fitting surface 19 that fits the lower fork arm 3, and the bushing has a threaded hole for threaded connection with the lower fork arm 3. By this structure, the shock absorber assembly 4 is installed on the lower fork arm 3, and it has no relative rotation freedom relative to the connecting member 1, which can effectively avoid the problem of insufficient thread clamping force and clamping force attenuation caused by the difficulty of deformation of the cast opening.

[0042] The upper fork arm 2 and the lower fork arm 3 both have a ball pin assembly, wherein the upper fork arm 2 is provided with an upper fork arm ball pin 20, and the lower fork arm 3 is provided with a lower fork arm ball pin 27. The corresponding fork arm is connected with the steering knuckle 7 of the brake system through the ball pin assembly. In this embodiment, the upper fork arm 2 includes an upper fork arm 2 body, an upper fork arm 2 front bushing and an upper fork arm 2 rear bushing mounted on the upper fork arm 2. The upper fork arm 2 front bushing and the upper fork arm 2 rear bushing correspondingly have bolt mounting holes for connecting the lug 21 of the connecting member 1 to be mounted on the connecting member 1. The upper fork arm 2 body has a mounting part for mounting the ball pin assembly. The lower fork arm 3 has a shock absorber fitting surface 26 that fits the shock absorber

[0043] In this embodiment, the inner contour of the sliding shaft tube one 22 and the sliding shaft tube two 24 both has a threaded hole.

[0044] Further comprising a subframe 6 arranged on the vehicle frame 5, the suspension guide member comprises the lower fork arm 3, the shock absorber assembly 4 is arranged on the lower fork arm 3, the lower fork arm 3 is provided with a connecting assembly one, and the lower fork arm 3 is connected with the subframe 6 through the connecting assembly one. The subframe 6 is used for mounting two lower fork arms 3. In this embodiment, the subframe 6 is threadedly connected with the lower wing surface of the vehicle frame 5.

[0045] The connecting member 1 has a fitting surface that fits the upper wing surface and the width surface of the vehicle frame 5, and the fitting surface is provided with a boss 17. The connecting member 1 is fitted with the two surfaces of the vehicle frame 5 (the upper wing surface of the vehicle frame 5 and the width surface of the vehicle frame 5), which is used for determining the relative position of the connecting member 1 relative to the vehicle frame 5. The boss 17 is arranged to facilitate the full fitting of the connecting member 1 with the vehicle frame 5.

[0046] The connecting member 1 has a mounting positioning surface of the shock absorber assembly 4, the shock absorber assembly 4 comprising a damper 41 and an elastic element, in this embodiment, the elastic element is a coil spring 42, the bottom of the damper 41 is arranged on the lower fork arm 3, the top is connected with the connecting member 1, and the coil spring 42 is coaxially sleeved on the damper 41. The elastic element is integrated with the shock absorber, which is convenient for assembly and after-sales maintenance, and avoids the assembly and after-sales maintenance difficulties brought by the separation scheme of the coil spring 42 and the damper 41. In this embodiment, there are a plurality of raised platforms 18 on the upper end of the shock absorber assembly to facilitate the full lamination of the connecting member 1 and the shock absorber.

[0047] The auxiliary frame 6 has a lower fork arm bushing 16, and the lower fork arm 3 is connected with the auxiliary frame 6 through the lower fork arm bushing 16.

[0048] The upper fork arm 2 and the lower fork arm 3 are integrally formed by die casting, which ensures the overall hard point precision.

[0049] The auxiliary frame 6 has a longitudinal beam lamination surface 13 for mounting the longitudinal beam of the frame 5, the longitudinal beam lamination surface 13 comprises a left longitudinal beam lamination surface 13 for mounting the left longitudinal beam and a right longitudinal beam lamination surface 13 for mounting the right longitudinal beam of the frame 5, and the auxiliary frame 6 is provided with positioning pins 15 for positioning and mounting the left longitudinal beam of the frame 5 and the right longitudinal beam of the frame 5, and the longitudinal beam lamination surface 13 is provided with longitudinal beam mounting holes 14 for connecting the longitudinal beam of the frame 5.

[0050] The connecting member 1 has a lamination surface for lamination with the upper wing surface and the width surface of the frame 5, the lamination surface comprises an upper wing surface lamination surface 11 and a width surface lamination surface 12, and the lamination surface is provided with a raised platform 17.

[0051] The connecting member 1 is threadedly connected with the damper 41 of the shock absorber assembly 4, the connecting member 1 has a shock absorber mounting hole 8 for mounting the damper 41, and the connecting member 1 has a frame 5 mounting hole for mounting the frame 5, wherein the frame 5 mounting hole comprises a width surface mounting hole 9 for lamination mounting with the width surface of the frame 5 and an upper wing surface mounting hole 10 for lamination mounting with the upper wing surface of the frame 5, and further, the mounting holes are all threaded holes.

[0052] Specifically, the connection relationship of each part of the double-fork-arm independent suspension

[0053] 1. Left side suspension: the connecting member 1 (left) is threadedly connected with the frame 5, the upper fork arm 2 (left) is threadedly connected with the connecting member 1 (left) through the upper fork arm 2 bushing mounting portion, the auxiliary frame 6 is threadedly connected with the frame 5, the lower fork arm 3 (left) is threadedly connected with the auxiliary frame 6 through the lower fork arm bushing 16, the upper fork arm 2 (left) and the lower fork arm 3 (left) are connected with the steering knuckle 7 (left) of the brake system through their ball pins, the upper end of the shock absorber assembly (left) is connected with the connecting member 1 (left), and the lower end bushing of the shock absorber assembly (left) is connected with the lower fork arm 3 (left) through the lower fork arm 3 shock absorber mounting structure.

[0054] 2, right side suspension: connecting member 1 (right) is screwed with the frame 5, the upper wishbone 2 (right) is screwed with the connecting member 1 (right) through the upper wishbone 2 bushing mounting part, the subframe 6 is screwed with the frame 5, the lower wishbone 3 (right) is screwed with the subframe 6 through the lower wishbone bushing 16, the upper wishbone 2 (right) and the lower wishbone 3 (right) are connected with the steering knuckle 7 (right) of the brake system through the ball pin of themselves, the upper end of the shock absorber assembly (right) is connected with the connecting member 1 (right), and the lower end bushing of the shock absorber assembly (right) is connected with the lower wishbone 3 (right) through the lower wishbone 3 shock absorber mounting structure.

[0055] The utility model discloses, suspension guiding member and elastic element physical structure separate, suspension elastic load deformation function and guiding function can realize decoupling, avoid the plate spring front suspension small truck type past brake direction deviation, linear driving stability poor etc. Problem can be effectively solved. Independent suspension (double wishbone) is applied to non-load-bearing type small truck, and compared with non-independent (plate spring) suspension application non-load-bearing type small truck, and its smoothness is better.

[0056] Finally, it is pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A double wishbone independent front suspension arrangement suitable for use on a non- load bearing body pick-up truck, characterised in that: The suspension guiding member comprises a suspension guiding member and a shock absorber assembly arranged on the suspension guiding member, the suspension guiding member is arranged on the connecting member, the shock absorber assembly has an elastic element, the suspension guiding member is used to be connected with a knuckle of a brake system, and the shock absorber assembly is connected with the connecting member.

2. Double wishbone independent front suspension device suitable for use on a small truck with a non-load bearing body according to claim 1, characterized in that: The suspension guiding member comprises upper fork arms arranged on left and right sides of the frame respectively, and the upper fork arms are connected with the connecting member.

3. Double wishbone independent front suspension device suitable for use on a small truck with a non-load bearing body according to claim 2, characterized in that: The suspension guiding member further comprises lower fork arms, the shock absorber assembly is arranged on the lower fork arms, the lower fork arms are provided with connecting assemblies, and the lower fork arms are connected with the sub-frame through the connecting assemblies.

4. The double-wishbone independent front suspension device for a small truck type vehicle with a non-load-bearing body according to claim 2, characterized in that: The connecting member has a fitting surface fitted with an upper wing surface and a width surface of the frame, and the fitting surface is provided with a boss.

5. The double-wishbone independent front suspension device for a small truck type vehicle with a non-load-bearing body according to claim 3, characterized in that: The connecting member is provided with a lug, the lug is provided with a mounting hole, a sliding shaft tube one is arranged in the mounting hole in an axial sliding fit, the sliding shaft tube one has a limiting part one, the limiting part one is used to limit the rotation of the sliding shaft tube one in the mounting hole, and the sliding shaft tube one is arranged on the upper fork arm.

6. The double-wishbone independent front suspension system suitable for a small truck type of non- body-on-frame vehicle according to claim 1, characterized in that: The connecting member has a mounting and positioning surface of the shock absorber assembly, the shock absorber assembly further comprises a damper, the elastic element is a coil spring, the bottom of the damper is arranged on the lower fork arm, the top of the damper is connected with the connecting member, and the coil spring is coaxially sleeved on the damper.

7. Double wishbone independent front suspension device suitable for use on a small truck of the non- load bearing type according to claim 6, characterized in that: The lower fork arm is provided with a sliding shaft tube two, the lower fork arm is provided with a mounting hole two, the sliding shaft tube two has a limiting part two, the limiting part two is used to limit the rotation of the sliding shaft tube two in the mounting hole two, and the sliding shaft tube two is arranged on the shock absorber assembly.

8. The double-wishbone independent front suspension system suitable for a small truck type of non- body-on-frame vehicle according to claim 1, characterized in that: The fork arm has a ball pin assembly, and the fork arm is connected with the knuckle of the brake system through the ball pin assembly.

9. The double-wishbone independent front suspension system suitable for a small truck type of non- body-on-frame vehicle according to claim 3, characterized in that: The sub-frame has a lower fork arm bushing, and the lower fork arm is connected with the sub-frame through the lower fork arm bushing.

10. The double-wishbone independent front suspension system suitable for use in a small truck type vehicle with a non- load-bearing body according to claim 3, characterized in that: The upper fork arm and the lower fork arm are integrally formed by die casting.

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