CN216834111U

CN216834111U - Scooter damping front fork and scooter

Info

Publication number: CN216834111U
Application number: CN202220141740.7U
Authority: CN
Inventors: 曾宪财
Original assignee: Shenzhen Boshida Technology Co ltd
Current assignee: Shenzhen Boshida Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-06-28
Anticipated expiration: 2032-01-19

Abstract

The embodiment of the utility model provides a scooter damping front fork and scooter, its front fork branch includes cylinder body and piston rod, the cylinder body top is sealed, its inside wall lower part is equipped with first flange and second flange, first flange is formed by cylinder body inside wall to the axis direction is outstanding, second flange is formed by first flange bottom is further to the axis direction is outstanding; the piston rod comprises a rod body and a rod head, the rod head is located between the top of the cylinder body and the first flange and is in slidable sealing fit with the inner side wall of the cylinder body, a first air chamber is formed between the rod head and the top of the cylinder body, the rod body is in slidable sealing fit with the inner side wall of the second flange, a second air chamber is formed between the rod head and the second flange, the rod body is provided with a hollow air storage chamber, the air storage chamber is communicated with the second air chamber, when the scooter is in a parking state, the air pressure of the first air chamber is greater than that of the second air chamber, and the rod head is attached to the top of the first flange. When the bicycle runs over an uneven road surface, the piston rod slowly extends out through the second air chamber, and riding comfort is improved.

Description

Scooter damping front fork and scooter

Technical Field

The embodiment of the utility model provides a relate to scooter technical field, especially relate to a scooter damping front fork and scooter.

Background

Along with the improvement of living standard of people, the low carbon environmental protection is being advocated vigorously throughout the society, and the scooter receives more and more consumers' liking as a new portable vehicle.

To improve the rider's comfort, the front fork of the scooter generally has a shock-absorbing effect. The front fork of the existing scooter is usually provided with a single-cylinder piston in a middle pipe, when the scooter rides on a bumpy road, a piston rod in the middle pipe can extend out at the highest speed without any buffer, and a rider can feel uncomfortable obviously. Another kind of scooter front fork sets up the spring on the branch of front wheel both sides, does not have any damping effect when the spring is rebounded after being compressed, under great impact force, can appear jolting and shake and cause the unstable problem of shock attenuation.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem that will solve lies in, provides scooter damping front fork and scooter with better shock attenuation effect.

In order to solve the above technical problem, an embodiment of the present invention provides a shock absorbing front fork of a scooter, which includes a bracket, a middle tube and a pair of support rods; the support is horizontally arranged, the middle pipe is vertically arranged in the middle of the support, and the pair of support rods are respectively vertically arranged at the left end and the right end of the support; each support rod comprises a cylinder body and a piston rod which is arranged in the cylinder body in a vertically sliding manner, the top end of the cylinder body is sealed, a first flange and a second flange are arranged at the lower part of the inner side wall of the cylinder body, the first flange is formed by protruding the inner side wall of the cylinder body to the central axis direction of the cylinder body, and the second flange is formed by further protruding the bottom end of the first flange to the central axis direction of the cylinder body; the piston rod includes the body of rod and is located the pole head on body of rod top, the pole head is located the cylinder body top with between the first flange, and with the sealed cooperation of inside wall slidable of cylinder body, in form first air chamber between pole head and the cylinder body top, the sealed cooperation of inside wall slidable of the body of rod and second flange, in form the second air chamber between pole head and the second flange, the body of rod is equipped with hollow air storage chamber, the air storage chamber with the second air chamber is linked together, and when the scooter was in the parking state, the atmospheric pressure of first air chamber was greater than the atmospheric pressure of second air chamber, the pole head subsides are put in first flange top.

Furthermore, the cylinder body is provided with a first air nozzle and a second air nozzle which are respectively communicated with the first air chamber and the second air chamber.

Further, the first air nozzle is positioned at the top end of the cylinder body.

Further, the second air nozzle is located on the side wall of the cylinder body.

Further, the second air tap is located on the first flange.

Furthermore, a sealing end cover is arranged at the top end of the cylinder body, and a sealing ring is clamped between the sealing end cover and the inner side wall of the cylinder body.

Further, the inner space above the first flange in the cylinder body is a rod head sliding space, the outer diameter of the rod head is consistent with the inner diameter of the rod head sliding space, and a sealing ring is clamped between the rod head and the inner side wall of the cylinder body.

Furthermore, the outer diameter of the rod body is consistent with the inner diameter of the second flange, and a sealing ring is clamped between the rod body and the inner side wall of the second flange.

Furthermore, a through hole is formed in the rod body, and two ends of the through hole are respectively communicated with the air storage chamber and the second air chamber.

An embodiment of the utility model provides a scooter is still provided, including footboard, handlebar, front wheel and rear wheel, scooter still includes as above the front fork, handlebar and footboard are all installed on the well pipe of front fork, the front wheel is installed between a pair of branch of front fork to its mid-shaft both ends respectively with the piston rod bottom of a pair of branch connect.

Compared with the prior art, the utility model discloses the front fork is when the scooter is in parking state, because of the atmospheric pressure of first air chamber is greater than the atmospheric pressure of second air chamber, and atmospheric pressure in the first air chamber makes the piston rod be in the biggest state of stretching out, and first flange top is arranged in to the pole head subsides. The scooter is at the in-process of riding, rides passerby's gravity and makes the cylinder body push down, and the piston rod is one section distance of retraction relatively in to the cylinder body, rides passerby's weight by the atmospheric pressure support of first air chamber. When riding on flat ground, the air pressure of the first air chamber and the air pressure of the second air chamber keep balance. When the piston rod extends to the longest state, the air pressure in the second air chamber provides reaction force for the rod head, the extending speed of the piston rod is reduced, and the piston rod extends slowly, so that the riding comfort is improved.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the shock absorbing front fork of the middle scooter of the present invention.

Fig. 2 is a cross-sectional view of the strut of the front fork of fig. 1 when the scooter is in a parked state.

Fig. 3 is a cross-sectional schematic view of the strut of the front fork of fig. 1 when the scooter is in a riding state.

Fig. 4 is a perspective view of a preferred embodiment of the scooter of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention to be solved clearer, the present invention will be described in further detail 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.

In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "horizontal", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the term "mounted" is to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, a preferred embodiment of the shock absorbing front fork of the scooter of the present invention is shown. This front fork includes support 1, well pipe 2 and a pair of branch 3, and support 1 level sets up, and well pipe 2 vertical mounting is in support 1 middle part, and both ends about support 1 are installed perpendicularly respectively to a pair of branch 3. Each rod 3 includes a cylinder 31 and a piston rod 32 slidably mounted in the cylinder 31 up and down. The top end of the cylinder 31 is sealed, and the lower portion of the inner wall of the cylinder is provided with a first flange 311 and a second flange 312, wherein the first flange 311 is formed by the inner wall of the cylinder 31 protruding toward the central axis of the cylinder 31, and the second flange 312 is formed by the bottom end of the first flange 311 further protruding toward the central axis of the cylinder 31. The piston rod 32 includes a rod body 321 and a rod head 322 located at the top end of the rod body 321; the rod head 322 is located between the top of the cylinder 31 and the first flange 311, and is slidably and hermetically matched with the inner side wall of the cylinder 31, and a first air chamber A is formed between the rod head 322 and the top of the cylinder 31; the rod 321 is slidably and hermetically matched with the inner side wall of the second flange 312, a second air chamber B is formed between the rod head 322 and the second flange 312, a hollow air storage chamber 3211 is arranged in the rod 321, and the air storage chamber 3211 is communicated with the second air chamber B; when the scooter is in a parking state, the air pressure of the first air chamber a is greater than the air pressure of the second air chamber B, and the rod head 322 is attached to the top of the first flange 311.

Please refer to fig. 4, which is a preferred embodiment of the scooter of the present invention. The scooter comprises pedals 100, a handlebar 200, a front wheel 300, a rear wheel 400 and the damping front fork. The handle bar 200 and the pedal 100 are mounted on the middle tube 2 of the front fork, the front wheel 300 is mounted between the pair of support rods 3 of the front fork, and the two ends of the middle tube are respectively connected with the bottom ends of the piston rods 32 of the pair of support rods 3.

When the scooter is in a parking state, the air pressure in the first air chamber a is greater than the air pressure in the second air chamber B, so that the piston rod 32 is in a maximum extending state due to the air pressure in the first air chamber a, and the rod head 322 is attached to the top of the first flange 311 (as shown in fig. 2). During the riding process of the scooter, the cylinder 31 is pressed down by the gravity of the rider, the piston rod 32 is relatively retracted into the cylinder 31 for a certain distance, and the weight of the rider is supported by the air pressure of the first air chamber a (as shown in fig. 3). When riding on flat ground, the air pressure of the first air chamber A and the air pressure of the second air chamber B are kept balanced. When the bicycle runs on an uneven road surface, the impact force of the road surface is large, the piston rod 32 is further retracted into the cylinder body 31 in a more flat riding state, when the bicycle runs on the uneven road surface, the piston rod 32 is extended out at the highest speed by the air pressure of the first air chamber A, and when the piston rod 32 is extended to the longest state, the air pressure of the second air chamber B provides a reaction force for the rod head 322, so that the extending speed of the piston rod 32 is reduced, the piston rod 32 is extended out slowly, and the riding comfort is improved.

The cylinder 31 is provided with a first air nozzle 313 and a second air nozzle 314 which are respectively communicated with the first air chamber A and the second air chamber B. Specifically, the first air nozzle 313 is located at the top end of the cylinder 31, in this embodiment, the top end of the cylinder 31 is provided with a sealing end cover 33, and the first air nozzle 313 is located on the sealing end cover 33. The second air nozzle 314 is located on the side wall of the cylinder 31. in this embodiment, the second air nozzle 314 is located on the first flange 311. When in use, the air pump can be used to pump air into the first air chamber A and the second air chamber B through the first air nozzle 313 and the second air nozzle 314 respectively. The softness corresponding to the weight of the rider can be adjusted by controlling the air inflation amount of the first air chamber A, and the speed of the extension and rebound of the piston rod 32 can be adjusted by controlling the air inflation amount of the second air chamber B.

The first air chamber a and the second air chamber B are both in a sealed state, in this embodiment, a sealing ring 34 is clamped between the sealing end cover 33 and the inner side wall of the cylinder 31 to seal the top of the cylinder 31, specifically, a groove (not shown) is formed on the outer side wall of the sealing end cover 33, and the sealing ring 34 is clamped in the groove. The inner space above the first flange 311 in the cylinder 31 is a sliding space of the rod head 322, the outer diameter of the rod head 322 is the same as the inner diameter of the sliding space of the rod head 322, a sealing ring 35 is clamped between the rod head 322 and the inner side wall of the cylinder 31 to seal the bottom of the first air chamber a and the top of the second air chamber B, specifically, a groove (not shown) is formed on the outer side wall of the rod head 322, and the sealing ring is clamped in the groove. The outer diameter of the rod 321 is the same as the inner diameter of the second flange 312, a sealing ring 36 is clamped between the rod 321 and the inner side wall of the second flange 312 to seal the bottom of the second air chamber B, specifically, a groove is formed in the inner side wall of the second flange 312, and the sealing ring 36 is clamped in the groove.

In addition, a transverse through hole 3212 is disposed at a position on the upper portion of the rod 321 near the rod head 322, and two ends of the through hole 3212 are respectively communicated with the air storage chamber 3211 and the second air chamber B. When the piston rod 32 extends downward, the gas in the second air chamber B is squeezed and transferred to the air storage chamber 3211 through the through hole 3212, and when the piston rod 32 retracts upward, the gas in the air storage chamber 3211 is transferred to the second air chamber B through the through hole 3212.

The utility model discloses scooter and damping front fork set up cylinder body 31 and piston rod 32 on front wheel 300's the left and right sides branch 3, the pole head 322 of piston rod 32 separates into sealed first air chamber A and second air chamber B with cylinder body 31's inner space, first air chamber A's atmospheric pressure is greater than second air chamber B's atmospheric pressure, when meetting great impact force at the in-process of riding, the piston rod 32 contracts in, when piston rod 32 outwards kick-backs, second air chamber B can play the effect of buffering, make piston rod 32 can stretch out slowly when being close final position, thereby can improve the travelling comfort of riding.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A shock-absorbing front fork of a scooter comprises a bracket, a middle pipe and a pair of supporting rods; the support is horizontally arranged, the middle pipe is vertically arranged in the middle of the support, and the pair of support rods are respectively vertically arranged at the left end and the right end of the support; the cylinder is characterized in that each supporting rod comprises a cylinder body and a piston rod which can be installed in the cylinder body in a vertically sliding mode, the top end of the cylinder body is sealed, a first flange and a second flange are arranged on the lower portion of the inner side wall of the cylinder body, the first flange is formed by protruding the inner side wall of the cylinder body towards the central axis direction of the cylinder body, and the second flange is formed by further protruding the bottom end of the first flange towards the central axis direction of the cylinder body; the piston rod includes the body of rod and is located the pole head on the body of rod top, the pole head is located the cylinder body top with between the first flange, and with the sealed cooperation of inside wall slidable ground of cylinder body, in form first air chamber between pole head and the cylinder body top, the pole body and the sealed cooperation of inside wall slidable ground of second flange, in form the second air chamber between pole head and the second flange, the pole body is equipped with hollow air storage chamber, the air storage chamber with the second air chamber is linked together, and when the scooter was in the parking state, the atmospheric pressure of first air chamber was greater than the atmospheric pressure of second air chamber, the pole head paste put in first flange top.

2. The shock absorbing front fork of a scooter as claimed in claim 1, wherein said cylinder body is provided with a first air nozzle and a second air nozzle respectively communicating with said first air chamber and said second air chamber.

3. The scooter shock absorbing front fork as claimed in claim 2, wherein said first air port is located at a top end of said cylinder.

4. The scooter shock absorbing front fork as claimed in claim 2, wherein said second air tap is located on a side wall of said cylinder body.

5. The scooter shock absorbing front fork of claim 4, wherein said second air tap is located on said first flange.

6. The shock absorbing front fork of a scooter as claimed in claim 1, wherein a sealing cover is provided on the top end of the cylinder, and a sealing ring is sandwiched between the sealing cover and the inner side wall of the cylinder.

7. The scooter shock absorbing front fork as claimed in claim 1, wherein the inner space of said cylinder above said first flange is a head sliding space, the outer diameter of said head is the same as the inner diameter of said head sliding space, and a seal ring is sandwiched between said head and the inner side wall of said cylinder.

8. The scooter shock absorbing front fork as claimed in claim 1, wherein the outer diameter of said shaft is substantially the same as the inner diameter of said second flange, and a seal ring is interposed between said shaft and the inner side wall of said second flange.

9. The shock absorbing front fork of a scooter as claimed in claim 1, wherein a through hole is provided on the rod body, and both ends of the through hole are respectively communicated with the air storage chamber and the second air chamber.

10. A scooter, comprising a pedal, a handlebar, a front wheel and a rear wheel, wherein the scooter further comprises a front fork according to any one of claims 1 to 9, the handlebar and the pedal are both mounted on a middle tube of the front fork, the front wheel is mounted between a pair of support rods of the front fork, and two ends of a central shaft thereof are respectively connected with bottom ends of piston rods of the pair of support rods.