Air cushion shock absorber structure of electric tricycle

Abstract

The utility model relates to the technical field of air cushion shock absorbers, in particular to an air cushion shock absorber structure of an electric tricycle. The piston rod is arranged in the damping cylinder, the top end of the piston rod penetrates through the damping cylinder to be arranged above the damping cylinder, the external threads are formed in the top of the periphery of the piston rod, the nut piece is arranged on the top of the periphery of the piston rod in a sleeving mode, and the nut piece is in threaded connection with the external threads; after the nut part is rotated to drive the clamping ring to move upwards to be separated from the clamping groove, the upper limiting ring is transversely pulled to enable the opening of the upper limiting ring to slide and separate along the piston rod, an old spring is axially lifted to be separated from the damping cylinder, when a new spring is installed, the new spring is sleeved into the damping cylinder, the bottom of the new spring is supported by the lower limiting ring, and then the upper limiting ring penetrates into the piston rod again to be reset. And the nut piece is reversely rotated to move downwards, so that the clamping ring is embedded into the clamping groove to be locked, the top of the new spring is fixed through the upper limiting ring, and the spring is conveniently replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air cushion shock absorber technical field especially air cushion shock absorber structure of electric tricycle. BACKGROUND

[0002] In recent years, online shopping becomes more and more common, leading to the rapid development of express delivery industry. Electric tricycles are often used in express delivery, and the shock absorbing structure of electric tricycles can effectively reduce the shock, so that the electric tricycle runs smoothly and avoids damage caused by bumps.

[0003] The common air cushion shock absorber structure of electric tricycle only includes the function of shock absorption and can slow down the vibration, but lacks the function of convenient spring replacement, which cannot guarantee the convenience of spring replacement and is prone to lose its elasticity during long-term use. Therefore, the spring needs to be replaced regularly, but the traditional fixed spring needs to be disassembled from the shock absorber assembly or even the suspension system, which is time-consuming and laborious and affects the convenience of spring replacement.

[0004] Therefore, in view of the above-mentioned air cushion shock absorber structure of electric tricycle lacking the function of convenient spring replacement, leading to low maintenance efficiency of the spring after losing its elasticity during long-term use, and existing problems such as complex replacement operation, time-consuming and laborious, a new type of air cushion shock absorber structure of electric tricycle is urgently needed. INVENTION CONTENTS

[0005] In order to overcome the problem of the common air cushion shock absorber structure of electric tricycle lacking the function of convenient spring replacement, leading to low maintenance efficiency of the spring after losing its elasticity during long-term use, and existing problems such as complex replacement operation, time-consuming and laborious.

[0006] The technical scheme of the utility model is: the air cushion shock absorber structure of electric tricycle, including the shock absorbing cylinder; further including the piston rod, external thread, nut part, clamping ring, upper limit ring and clamping groove, the inside of the shock absorbing cylinder is provided with the piston rod, the top end of the piston rod penetrates the shock absorbing cylinder and is placed above it, the top of the piston rod is provided with external thread, the top of the piston rod is provided with nut part, the nut part is threadedly connected with the external thread, the bottom of the nut part is provided with the clamping ring, the upper limit ring is provided with the clamping groove on the top, and the clamping ring is clamped into the inside of the clamping groove.

[0007] Preferably, by rotating the nut member upward, the nut member drives the clamping ring to move upward until the clamping ring is completely separated from the clamping groove, then the upper limiting ring can be pulled horizontally, so that the piston rod passes through the opening of the upper limiting ring until the upper limiting ring is separated from the piston rod, then the old spring can be lifted upward until the old spring is separated from the shock cylinder, and then the new spring is sleeved on the periphery of the shock cylinder, the bottom end of the new spring is supported by the lower limiting ring, the opening of the upper limiting ring is rethreaded through the piston rod and sleeved on the periphery thereof, and finally the nut member is rotated downward, the nut member drives the clamping ring to move downward until the clamping ring is completely clamped into the clamping groove, at this time the top end of the new spring is supported by the upper limiting ring, realizing the function of conveniently replacing the spring, so as to solve the problem that the common air cushion shock absorber structure of the electric tricycle only contains the function of shock absorption and can slow down the vibration, but lacks the function of conveniently replacing the spring, cannot guarantee the convenience of replacing the spring, and the spring can lose its resilience in a long time of use, so the spring needs to be replaced regularly, but the traditional fixed spring needs to disassemble the shock absorber assembly or even the suspension system, which is time-consuming and laborious and affects the convenience of replacing the spring.

[0008] As preferred, the top center of the piston rod is provided with an internal screw hole, and the top end of the piston rod is provided with a first connecting head, and the bottom of the first connecting head is provided with a stud.

[0009] As preferred, the front center of the first connecting head is provided with a first circular groove, and the first connecting head is connected with the piston rod by screwing the stud into the internal screw hole.

[0010] As preferred, the lower part of the periphery of the shock cylinder is sleeved with a lower limiting ring corresponding to the position of the upper limiting ring, and the periphery of the shock cylinder is sleeved with a spring corresponding to the positions of the upper limiting ring and the lower limiting ring.

[0011] As preferred, the bottom end of the spring is attached to the top of the lower limiting ring, and the top end of the spring is attached to the bottom of the upper limiting ring.

[0012] As preferred, the bottom of the shock cylinder is provided with a second connecting head, and the front center of the second connecting head is provided with a second circular groove.

[0013] As preferred, the right side of the bottom of the periphery of the shock cylinder is provided with a special-shaped connecting rod, and the end of the special-shaped connecting rod away from the shock cylinder is connected with a gas cylinder.

[0014] The beneficial effects of the present application are as follows:

[0015] 1、through the rotation nut piece makes it to the displacement, drive the clamping ring synchronous up to the complete separation of the clamping groove range of constraints, at this time can lateral traction upper limit ring and make its open position slip along the piston rod axis direction, until the limit ring and piston rod completely separated, then the old spring is pulled to the axial direction and completely separated from the damping cylinder outer wall, when replacing first new spring coaxial sleeve is connected to the damping cylinder outer wall and by the lower limit ring provides the bottom support, again the open end of the upper limit ring is reinserted into the piston rod and reset to the preset assembly position, finally through the reverse rotation nut piece makes it to the lower, synchronous drive clamping ring along the axial precision embedded in the clamping groove inside the lock, in the process by the upper limit ring to the new spring top end effective support, the function of convenient replacement spring is realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure of the air cushion shock absorber of the electric tricycle is shown.

[0017] Figure 2 The piston rod structure of the air cushion shock absorber of the electric tricycle is shown.

[0018] Figure 3 The first connecting head structure of the air cushion shock absorber of the electric tricycle is shown.

[0019] Figure 4 The nut piece structure of the air cushion shock absorber of the electric tricycle is shown.

[0020] Figure 5 The upper limit ring structure of the air cushion shock absorber of the electric tricycle is shown.

[0021] Reference signs: 1, damping cylinder; 2, piston rod; 3, external thread; 4, nut piece; 5, clamping ring; 6, upper limit ring; 7, clamping groove; 8, internal screw hole; 9, first connecting head; 10, first circular groove; 11, stud; 12, lower limit ring; 13, spring; 14, second connecting head; 15, second circular groove; 16, special-shaped connecting rod; 17, air cylinder. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings and examples.

[0023] Please refer to Figures 1-5The utility model provides an embodiment: Electric tricycle's air cushion shock absorber structure, including shock attenuation cylinder 1, still including piston rod 2, outer thread 3, nut piece 4, clamping ring 5, upper limit ring 6 and clamping groove 7, the inside of shock attenuation cylinder 1 is provided with piston rod 2, the top of piston rod 2 is placed above the penetration shock attenuation cylinder 1, the top of the whole body of piston rod 2 is equipped with outer thread 3, the top of the whole body of piston rod 2 is equipped with nut piece 4, nut piece 4 is connected with outer thread 3 by screw thread, the bottom of nut piece 4 is provided with clamping ring 5, the whole body of piston rod 2 is equipped with upper limit ring 6 in the position corresponding clamping ring 5, the top of upper limit ring 6 is equipped with clamping groove 7, clamping ring 5 is inserted into the inside of clamping groove 7, by rotating nut piece 4 and moving upwards, nut piece 4 drives clamping ring 5 and moves upwards, until clamping ring 5 completely separates from clamping groove 7, then can pull upper limit ring 6 transversely, so that piston rod 2 passes through the opening of upper limit ring 6, until upper limit ring 6 and piston rod 2 separate, then can lift old spring 13 upwards, until old spring 13 and shock attenuation cylinder 1 separate, again spring 13 is equipped in the whole body of shock attenuation cylinder 1, the bottom of spring 13 is supported by lower limit ring 12, again the opening of upper limit ring 6 is passed through piston rod 2 and is equipped in the whole body thereof, finally rotate nut piece 4 and move downwards, nut piece 4 drives clamping ring 5 and moves downwards, until clamping ring 5 is completely inserted into clamping groove 7, at this time, the top of spring 13 is supported by upper limit ring 6, realize the function of conveniently replacing spring 13, to solve the common electric tricycle's air cushion shock absorber structure, only contain the function of shock attenuation, can play the role of attenuating vibration, but lack the function of conveniently replacing spring 13, cannot guarantee the convenience of replacing spring 13, spring 13 can lose its resilience in the process of long time use, thus then need to replace spring 13 regularly, but traditional fixed type spring 13 needs to disassemble shock absorber assembly or even suspension system, time-consuming and laborious, influence the problem of the convenience of replacing spring 13.

[0024] Please refer to Figures 2-5 In the embodiment, the top center of piston rod 2 is provided with an internal screw hole 8, the top end of piston rod 2 is provided with a first connecting head 9, the bottom of first connecting head 9 is provided with a stud 11, first connecting head 9 is connected with the connecting shaft of electric tricycle through the stud 11, the front center of first connecting head 9 is provided with a first circular groove 10, first connecting head 9 is connected with piston rod 2 by rotating the stud 11 into the internal screw hole 8, rotating the stud 11 in or out of the internal screw hole 8 by rotating the first connecting head 9 forward or reversely, so that the first connecting head 9 can be replaced, the lower part of the whole body of shock attenuation cylinder 1 is equipped with a lower limit ring 12 in the position corresponding to the upper limit ring 6, the whole body of shock attenuation cylinder 1 is equipped with spring 13 in the position corresponding to the upper limit ring 6 and the lower limit ring 12, the road impact is buffered by the characteristics of spring 13, the weight of the vehicle body is supported, and the vibration is inhibited cooperatively with the shock absorber.

[0025] Please refer to Figures 1-5 In the embodiment, the bottom end of the spring 13 is attached to the top of the lower limiting ring 12, and the top end of the spring 13 is attached to the bottom of the upper limiting ring 6. The position of the spring 13 is limited by the lower limiting ring 12 and the upper limiting ring 6. The bottom of the shock cylinder 1 is provided with a second connecting head 14. A second circular groove 15 is formed in the front center of the second connecting head 14. The second connecting head 14 is connected to another connecting shaft of the electric tricycle. The right side of the bottom of the shock cylinder 1 is provided with a special-shaped connecting rod 16. The special-shaped connecting rod 16 is connected to a gas cylinder 17 at the end away from the shock cylinder 1. The gas cylinder 17 inputs gas into the inside of the shock cylinder 1. The gas pushes the piston rod 2 to move.

[0026] When working, the nut part 4 is rotated to move upward, driving the clamping ring 5 to move upward synchronously until it is completely separated from the constraint range of the clamping groove 7. At this time, the upper limiting ring 6 can be laterally pulled to make its open part slide along the axis direction of the piston rod 2 until the upper limiting ring 6 is completely separated from the piston rod 2. Then, the old spring 13 is pulled along the axial direction until it is completely separated from the outer wall of the shock cylinder 1. When replacing, the new spring 13 is first coaxially sleeved on the outer periphery of the shock cylinder 1 and is supported at the bottom by the lower limiting ring 12. Then, the open end of the upper limiting ring 6 is inserted into the piston rod 2 again and is reset to the preset assembly position. Finally, the nut part 4 is rotated in the opposite direction to move downward, synchronously driving the clamping ring 5 to accurately insert into the inside of the clamping groove 7 for locking. In this process, the upper limiting ring 6 effectively supports the top end of the new spring 13, realizing the function of conveniently replacing the spring 13.

[0027] Through the above steps, the nut part 4 is rotated to move upwards, the nut part 4 drives the clamping ring 5 to move upwards, until the clamping ring 5 is completely separated from the clamping groove 7, then the upper limiting ring 6 can be pulled horizontally, so that the piston rod 2 passes through the opening of the upper limiting ring 6, until the upper limiting ring 6 is separated from the piston rod 2, then the old spring 13 can be lifted upwards until the old spring 13 is separated from the damping cylinder 1, then the new spring 13 is sleeved on the periphery of the damping cylinder 1, the bottom end of the new spring 13 is supported by the lower limiting ring 12, then the opening of the upper limiting ring 6 is sleeved on the periphery of the piston rod 2, finally the nut part 4 is rotated to move downwards, the nut part 4 drives the clamping ring 5 to move downwards, until the clamping ring 5 is completely clamped into the clamping groove 7, at this time the top end of the new spring 13 is supported by the upper limiting ring 6, realizing the function of conveniently replacing the spring 13, to solve the common air cushion shock absorber structure of the electric tricycle, only containing the function of damping, can play the role of reducing vibration, but lacks the function of conveniently replacing the spring 13, cannot guarantee the convenience of replacing the spring 13, the spring 13 may lose its resilience in the process of long-term use, therefore the spring 13 needs to be replaced regularly, but the traditional fixed spring 13 needs to disassemble the shock absorber assembly or even the suspension system, which is time-consuming and laborious, affecting the convenience of replacing the spring 13.

Claims

1. An air cushion shock absorber structure for an electrically driven three-wheeled vehicle, comprising a shock absorber cylinder (1); characterized by: It also includes piston rod (2), external thread (3), nut piece (4), clamping ring (5), upper limit ring (6) and clamping groove (7), the inside of the shock cylinder (1) is provided with piston rod (2), the top end of piston rod (2) penetrates the shock cylinder (1) and is placed above it, the top of piston rod (2) is provided with external thread (3), the top of piston rod (2) is provided with nut piece (4), nut piece (4) is connected with external thread (3), the bottom of nut piece (4) is provided with clamping ring (5), the circumference of piston rod (2) is provided with upper limit ring (6) corresponding to the position of clamping ring (5), the top of upper limit ring (6) is provided with clamping groove (7), clamping ring (5) is clamped into the inside of clamping groove (7).

2. The air cushion damper structure of the electrically driven three wheeled vehicle according to claim 1, characterized by: The top center of piston rod (2) is provided with internal thread (8), the top end of piston rod (2) is provided with first connector (9), the bottom of first connector (9) is provided with stud (11).

3. The air cushion damper structure of the electrically driven three wheeled vehicle according to claim 2, characterized by: The front center of first connector (9) is provided with first circular groove (10), first connector (9) is connected with piston rod (2) by rotating stud (11) into the inside of internal thread (8).

4. The air cushion damper structure of the electrically driven three wheeled vehicle according to claim 1, characterized by: The lower part of the circumference of shock cylinder (1) is provided with lower limit ring (12) corresponding to the position of upper limit ring (6), the circumference of shock cylinder (1) is provided with spring (13) corresponding to the position of upper limit ring (6) and lower limit ring (12).

5. The air cushion damper structure of the electrically driven three wheeled vehicle according to claim 4, characterized by: The bottom end of spring (13) is attached to the top of lower limit ring (12), the top end of spring (13) is attached to the bottom of upper limit ring (6).

6. The air cushion damper structure of the electrically driven three wheeled vehicle according to claim 1, characterized by: The bottom of shock cylinder (1) is provided with second connector (14), the front center of second connector (14) is provided with second circular groove (15).

7. The air cushion damper structure of the motor tricycle according to claim 1, characterized by: The right side of the bottom of the circumference of shock cylinder (1) is provided with special-shaped connecting rod (16), the end of special-shaped connecting rod (16) away from shock cylinder (1) is connected with air cylinder (17).

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