Rear axle damping structure and tricycle thereof

Abstract

The invention provides a rear axle damping structure and a tricycle with the rear axle damping structure. The rear axle damping structure comprises a frame, and damping mechanisms independent of each other are symmetrically arranged on the left side and the right side of the frame; the damping mechanism comprises a supporting assembly and a damping assembly, the supporting assembly comprises a supporting piece, and the supporting piece is movably connected to the bottom of the frame and used for supporting the rear axle; the damping assembly is connected to the frame and the supporting piece and used for buffering movement of the rear wheel. The independent damping mechanisms are arranged on the left side and the right side of the frame correspondingly, the left rear wheel and the right rear wheel are connected with the frame through the supporting assemblies and the damping assemblies correspondingly, rigid or semi-rigid correlation between the left rear wheel and the right rear wheel is structurally avoided, and therefore transverse shaking and vertical bumping of the whole vehicle are effectively reduced; and the concentrated transmission of the impact load between the rear axle and the frame is reduced, so that the service lives of the whole vehicle and the rear axle structure are prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tricycles, in particular to a rear axle damping structure and a tricycle thereof. BACKGROUND

[0002] The rear axle is a key structural component of the whole vehicle. During driving, the vehicle will produce severe up-and-down vibration and lateral swing, and the jolt is severe, which directly affects the safety and comfort of the whole vehicle. Therefore, a damping structure needs to be arranged between the rear axle and the frame.

[0003] The existing damping structure mostly adopts a whole rear axle structure, that is, the left and right rear wheels are rigidly connected through the same rear axle, and the rear axle is connected to the frame through a single or common damping device to realize the shock buffering during driving of the vehicle.

[0004] However, since the left and right rear wheels are rigidly or semi-rigidly connected through the rear axle, when one side of the rear wheel encounters a road bump, a pit or an obstacle during driving, the jumping and impact force generated thereby will be transmitted to the other side of the rear wheel through the rear axle, so that the other side of the rear wheel is passively lifted or subjected to force fluctuation, thereby causing the whole vehicle to produce obvious swing. Not only does this reduce the driving smoothness and ride comfort of the vehicle, but also easily causes fatigue damage of the frame and the rear axle structure, affecting the stability and service life of the vehicle. Meanwhile, when the left and right rear wheels are out of step in force, the contact state of the tire and the ground is also unstable, thereby affecting the controllability and safety of the vehicle. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a rear axle damping structure and a tricycle thereof, so as to solve the technical problem that the rear axle damping structure in the prior art is rigidly connected with the left and right rear wheels, and the vibration and jumping of one side of the rear wheel during driving is transmitted to the other side of the rear wheel, thereby reducing the driving smoothness and ride comfort of the vehicle, and easily causing fatigue damage of the frame and the rear axle structure.

[0006] To achieve the above purpose, the present application adopts the following technical solution:

[0007] A rear axle damping structure, comprising a frame, the left and right sides of the frame are symmetrically provided with independent damping mechanisms; the damping mechanism comprises:

[0008] a support assembly comprising a support piece, the support piece is movably connected to the bottom of the frame and is used for supporting the rear axle;

[0009] a damping assembly connected to the frame and the support piece, used for buffering the movement of the rear wheel.

[0010] Furthermore, the support member includes a support frame and a connector disposed on the support frame, the vehicle frame is provided with a mounting seat, and the connector is movably connected to the mounting seat.

[0011] Furthermore, the support frame is symmetrically provided with two connectors, and the frame is provided with two mounting seats at intervals. The two connectors and the two mounting seats are movably connected in a one-to-one correspondence.

[0012] Furthermore, the mounting base is U-shaped, the connector head has a mounting hole, and both sides of the mounting base have through holes. The mounting hole is connected to the two through holes for bolts to pass through and be locked by nuts.

[0013] Furthermore, the distance between the two sides of the mounting base is greater than the width of the connector, the inner diameter of the through hole is smaller than the inner diameter of the mounting hole, and the bolt and the through hole are clearance-fitted.

[0014] Furthermore, the shock absorption assembly includes a shock absorption spring, the vehicle frame is provided with a first fixed seat, the support frame is provided with a second fixed seat, and the two ends of the shock absorption spring are detachably connected to the first fixed seat and the second fixed seat, respectively.

[0015] Furthermore, the end of the shock-absorbing spring is provided with a lifting ring, which is rotatably mounted on the second fixed seat.

[0016] Furthermore, the longitudinal section of the second fixing seat is U-shaped, and the distance between the two sides of the second fixing seat is greater than the width of the lifting ring.

[0017] Furthermore, the support frame is provided with a connecting seat, and the connecting seat has several connecting holes.

[0018] The present invention also provides a tricycle, including the aforementioned rear axle shock absorption structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting independent shock absorption mechanisms on the left and right sides of the frame, the left and right rear wheels are connected to the frame through their respective support components and shock absorption components. This structurally avoids rigid or semi-rigid connection between the left and right rear wheels, allowing them to bounce up and down independently during driving. This reduces the transmission of vibration from one rear wheel to the other when it is impacted by the road, thereby effectively reducing the lateral sway and vertical bumps of the vehicle and improving the ride smoothness and ride comfort.

[0021] 2. Since the damping load is applied to the damping mechanisms on the left and right sides respectively, the concentrated transmission of impact load between the rear axle and the frame is reduced, effectively reducing fatigue damage to the frame and related structural components, thereby extending the service life of the whole vehicle and the rear axle structure. Attached Figure Description

[0022] Appendix Figure 1 This embodiment illustrates the installation of the rear axle shock absorber structure onto a tricycle. Figure 1 ;

[0023] Appendix Figure 2 This embodiment illustrates the installation of the rear axle shock absorber structure onto a tricycle. Figure 2 ;

[0024] Appendix Figure 3 Appendix Figure 2 A magnified schematic diagram of the local structure;

[0025] Appendix Figure 4 : A schematic diagram of the rear axle damping structure in this embodiment;

[0026] Appendix Figure 5 : A schematic diagram of the support frame in the rear axle damping structure of this embodiment;

[0027] Explanation of icon numbers:

[0028] 10. Frame; 11. Mounting bracket; 12. First mounting bracket;

[0029] 20. Support component; 21. Support frame; 22. Connector; 221. Mounting hole; 23. Second fixing seat; 24. Connecting seat; 241. Connecting hole;

[0030] 30. Vibration damping components; 31. Vibration damping springs; 32. Lifting rings;

[0031] 40. Bolt; 50. Nut; 60. Drive shaft; 70. Brake disc; 80. Disc brake mechanism.

[0032] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the technical solutions of this invention are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0034] In the description of this invention, it should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the implementation conditions of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0035] like Figures 1-5 As shown, this embodiment of the invention proposes a rear axle shock absorption structure, including a frame 10, on which independent shock absorption mechanisms are symmetrically arranged on the left and right sides; the shock absorption mechanism includes: a support assembly 20, including a support member, the support member being movably connected to the bottom of the frame 10 and used to support the drive shaft 60 of the rear wheel; and a shock absorption assembly 30, connected to the frame 10 and the support member, used to buffer the movement of the rear wheel.

[0036] Specifically, during vehicle operation, the left and right rear wheels are detachably mounted on the support components 20 via corresponding connecting seats 24, and each support component is connected to the bottom of the frame 10 via a movable connection, allowing the support component to swing or shift relative to the frame 10. The shock absorption components 30 are respectively connected between the frame 10 and the corresponding support component, and are used to buffer and absorb the vertical movement of the rear wheels during operation.

[0037] When the vehicle is traveling on uneven roads, if one of the rear wheels encounters a bump, pothole, or obstacle and bounces upwards, the movement of that rear wheel is transmitted to the corresponding support member through the connecting seat 24. The support member moves relative to the frame 10, simultaneously causing the corresponding shock absorber 30 to compress or stretch, thereby buffering and absorbing the impact force generated by that rear wheel. Furthermore, since the frame 10 has independent shock absorber mechanisms on both sides, the other rear wheel remains connected to the frame 10 through its corresponding support member 20 and shock absorber 30, and is not directly affected by the bounce of that rear wheel, thus maintaining a relatively stable motion.

[0038] In this way, the left and right rear wheels can move up and down independently during driving, avoiding the situation in existing integral rear axle structures where vibrations from one rear wheel are transmitted to the other. This effectively reduces the vehicle's lateral sway and vertical bumps, improving ride smoothness and passenger comfort. Simultaneously, each shock absorber distributes the impact load to its corresponding rear wheel, effectively reducing the concentration of impact force on the frame 10 and rear axle, thereby improving the vehicle's overall driving stability and structural reliability.

[0039] It should be noted that, in this invention, the rear wheels on both sides of the frame 10 are connected to the frame 10 through independent shock absorption mechanisms. Therefore, the transmission structures used to drive the rotation of the left and right rear wheels are also independently configured.

[0040] Specifically, the left and right rear wheels are connected to the power output end through their respective independent drive shafts 60. While transmitting driving force, each drive shaft 60 can swing relative to the frame 10 to adapt to the displacement changes of the rear wheels during shock absorption, thereby avoiding the problem of transmission limitation or excessive additional stress caused by the up-and-down bouncing of the rear wheels.

[0041] In one embodiment, the driveshaft 60 can be connected to the gearbox or gearbox via a ball cage structure. The ball cage structure allows the driveshaft 60 to swing within a certain angle range while transmitting torque, thereby ensuring the continuity and stability of power transmission even when the left and right rear wheels move independently. However, the present invention is not limited to the above connection method. Any connection structure that allows the driveshaft 60 to change angle while transmitting power can be applied to the present invention.

[0042] like Figures 2-5 As shown, in this embodiment, the support member includes a support frame 21 and a connector 22 disposed on the support frame 21. The frame 10 is provided with a mounting base 11, and the connector 22 is movably connected to the mounting base 11. The connector 22 is installed in the mounting base 11 by means of a movable connection, so that the support frame 21 and the connector 22 can move relative to each other.

[0043] Specifically, when the rear wheels bounce up and down on uneven road surfaces during vehicle operation, the force on the rear wheels is transmitted to the connector 22 through the connecting seat 24. The connector 22 rotates or swings relative to the mounting seat 11, thereby causing the support frame 21 to shift relative to the vehicle frame 10, allowing the rear wheels to move in accordance with road undulations. Simultaneously, because the connector 22 and the mounting seat 11 are movably connected, the changes in the mounting angle caused by the rear wheel bouncing can be compensated, preventing the support components from jamming or experiencing concentrated stress during movement.

[0044] In a preferred embodiment, the support frame 21 is symmetrically provided with two connectors 22, and the frame 10 is provided with two mounting seats 11 spaced apart. The two connectors 22 and the two mounting seats 11 are movably connected in a one-to-one correspondence. By providing two spaced connectors 22 and mounting seats 11, the support frame 21 can be subjected to more even force during movement, avoiding the problems of swaying, tilting, or local stress concentration caused by supporting only a single connection point.

[0045] like Figures 3-5 As shown, in this embodiment, the mounting base 11 is U-shaped, and the connector 22 has a mounting hole 221. Through holes are provided on both sides of the mounting base 11, and the mounting hole 221 communicates with the two through holes for the bolt 40 to pass through and be locked by the nut 50. Specifically, during assembly, the connector 22 is simply placed into the U-shaped mounting base 11, aligning the mounting hole 221 with the through holes on both sides of the mounting base 11, and then tightened with the bolt 40 and nut 50 to complete the connection. The assembly process is simple and reliable, and facilitates subsequent disassembly and maintenance.

[0046] In one embodiment, the distance between the two sides of the mounting base 11 is greater than the width of the connector 22, the inner diameter of the through hole is smaller than the inner diameter of the mounting hole 221, and the bolt 40 and the through hole are clearance-fitted. Specifically, when the rear axle vibrates in the vertical direction, the connector 22 can rotate or deflect within the mounting base 11 around the axis of the bolt 40, so that the connection between the support frame 21 and the rear wheel can adapt to the displacement changes in the vertical direction, thereby avoiding the restriction of the normal bounce of the rear wheel due to rigid constraints. At the same time, when the vehicle sways laterally during driving, the connector 24 causes lateral movement of the rear wheel and the rear axle. Since the distance between the two sides of the mounting base 11 is greater than the width of the connector 22, the connector 22 can generate lateral displacement relative to the mounting base 11 within the distance range, so that the support frame 21 moves relative to the mounting base 11 within a certain range, without having to drive the mounting base 11 as a whole to generate corresponding lateral movement, thereby adapting to and buffering the lateral sway.

[0047] like Figures 1-4 As shown, in this embodiment, the shock absorption assembly 30 includes a shock absorption spring 31. The frame 10 is provided with a first fixed seat 12, and the support frame 21 is provided with a second fixed seat 23. The two ends of the shock absorption spring 31 are detachably connected to the first fixed seat 12 and the second fixed seat 23, respectively. Since both ends of the shock absorption spring 31 are detachably connected, it is convenient for assembly and maintenance, and ensures the normal function of the shock absorption spring 31 during shock absorption. Both ends of the shock absorption spring 31 can be connected by screws.

[0048] Specifically, the end of the damping spring 31 is provided with a lifting ring 32, which is rotatably mounted on the second fixed base 23. The lifting ring 32 is mounted on the second fixed base 23 by rotation, so that the damping spring 31 can change its angle accordingly with the slight movement of the support during vertical compression or tension, thereby making the damping effect smoother.

[0049] In one embodiment, the longitudinal section of the second fixed seat 23 is U-shaped, and the distance between the two sides of the second fixed seat 23 is greater than the width of the lifting ring 32, so that the lifting ring 32 can rotate relatively freely within the second fixed seat 23 and generate a small displacement within a certain range.

[0050] Specifically, when the rear wheel is subjected to vertical vibration or slight lateral sway caused by uneven road surface, the shock absorber spring 31 drives the hanging ring 32 to rotate or move slightly. At this time, the second fixed seat 23 provides a certain amount of movement space for the hanging ring 32, thereby allowing the shock absorber spring 31 to adapt to the slight sway of the support while being compressed or stretched, and avoiding the force concentration at its end or excessive constraint.

[0051] In this embodiment, the shock-absorbing spring 31 can be a helical spring shock absorber (including a telescopic rod and a helical spring sleeved on the outside of the telescopic rod) from the prior art.

[0052] like Figures 4-5 As shown, in this embodiment, the support frame 21 is provided with a connecting seat 24, which provides a channel for the drive shaft 60 to pass through, so that power can be smoothly transmitted to the rear wheel and the drive shaft 60 remains stable during operation. Simultaneously, the connecting seat 24 has several connecting holes 241 for mounting the brake disc 70 and the disc brake mechanism 80, so that the disc brake mechanism 80 acts on the brake disc 70, thereby braking the rear wheel. The specific designs of the disc brake mechanism 80 and the brake disc 70 are existing technologies and will not be described here.

[0053] This embodiment also provides a tricycle, including the rear axle shock absorption structure described above. The specific structure of the rear axle shock absorption structure is as described in the above embodiment. Since this tricycle adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A rear axle damping structure comprising a vehicle frame (10), characterized by, The shock-absorbing mechanism is independently arranged on the left and right sides of the frame (10) and comprises: A support assembly (20) comprising a support member movably connected to the bottom of the frame (10) and used for supporting the rear axle; A shock-absorbing assembly (30) connected to the frame (10) and the support member and used for buffering the movement of the rear wheel.

2. The rear axle damping structure according to claim 1, characterized by The support member comprises a support frame (21) and a connecting head (22) arranged on the support frame (21), and the frame (10) is provided with a mounting seat (11), and the connecting head (22) is movably connected with the mounting seat (11).

3. The rear axle damping structure according to claim 2, characterized by The support frame (21) is symmetrically provided with two connecting heads (22), the frame (10) is provided with two mounting seats (11) at intervals, and the two connecting heads (22) are movably connected with the two mounting seats (11) one by one.

4. The rear axle damping structure according to claim 2, characterized by The mounting seat (11) is in the shape of a U, the connecting head (22) is provided with a mounting hole (221), both sides of the mounting seat (11) are provided with through holes, the mounting hole (221) is in communication with the two through holes, and the mounting hole (221) is used for allowing a bolt (40) to pass through and be locked by a nut (50).

5. The rear axle damping structure according to claim 4, characterized by The distance between the two sides of the mounting seat (11) is greater than the width of the connecting head (22), the inner diameter of the through hole is smaller than the inner diameter of the mounting hole (221), and the bolt (40) is in clearance fit with the through hole.

6. The rear axle damping structure according to claim 2, characterized by The shock-absorbing assembly (30) comprises a shock-absorbing spring (31), the frame (10) is provided with a first fixing seat (12), the support frame (21) is provided with a second fixing seat (23), and the two ends of the shock-absorbing spring (31) are detachably connected with the first fixing seat (12) and the second fixing seat (23) respectively.

7. The rear axle damping structure according to claim 6, characterized by The end of the shock-absorbing spring (31) is provided with a lifting ring (32), and the lifting ring (32) is rotatably arranged on the second fixing seat (23).

8. The rear axle damping structure according to claim 7, characterized by The longitudinal section of the second fixing seat (23) is in the shape of a U, and the distance between the two sides of the second fixing seat (23) is greater than the width of the lifting ring (32).

9. The rear axle damping structure of claim 2, wherein The support frame (21) is provided with a connecting seat (24), and a plurality of connecting holes (241) are arranged on the connecting seat (24).

10. A tricycle characterized in that, The rear axle shock-absorbing structure comprises the rear axle shock-absorbing structure according to any one of claims 1-9.

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