CN215851704U - Hub brake flexible connection structure - Google Patents
Hub brake flexible connection structure Download PDFInfo
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- CN215851704U CN215851704U CN202122179007.2U CN202122179007U CN215851704U CN 215851704 U CN215851704 U CN 215851704U CN 202122179007 U CN202122179007 U CN 202122179007U CN 215851704 U CN215851704 U CN 215851704U
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- hub
- hub brake
- flexible connection
- connection structure
- shaft
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Abstract
The utility model discloses a hub brake flexible connection structure which comprises a bottom fork, a hub brake, a wheel shaft and wheels, wherein the front end of the bottom fork is rotatably connected to a frame, one end of the wheel shaft is connected with the rear end of the bottom fork, the hub brake is sleeved on the wheel shaft and is connected with the bottom fork, the wheels are rotatably connected with the wheel shaft, the hub brake flexible connection structure also comprises a flexible connection sleeve, the flexible connection sleeve is sleeved on the wheel shaft, and the hub brake is connected with the wheel shaft through the flexible connection sleeve. The flexible connecting sleeve plays a role in buffering, acts on the wheel shaft and the hub brake, and can effectively absorb impact force generated when the wheel brake stops, so that the problem of abnormal sound generated by the reverse rotation of the hub brake due to the reset of the shock-absorbing spring during braking is solved, the impact force of the hub brake and the bottom fork at the connecting position in the vehicle braking process is relieved, metal fatigue is effectively delayed, the braking safety of the electric two-wheeled vehicle adopting the utility model is ensured, and the service life of the utility model is prolonged.
Description
Technical Field
The utility model relates to the field of electric bicycle brakes, in particular to a hub brake flexible connection structure.
Background
The hub is stopped and is used comparatively extensively on electric bicycle, and general hub is stopped and all links to each other through shaft and wheel, is stopped through setting up the form of draw-in groove or fixed column simultaneously at the hub and is connected with the chain stay. The center of the hub brake is sleeved on the wheel shaft, and the existing clamping groove fixing structure generates impact due to the gap of the clamping groove in the vehicle braking process because the gap of installation needs to be reserved; simultaneously the hub is stopped and is laminated completely because shaft end nut is screwed with the shaft, and the spring that moves away to avoid possible earthquakes contracts at braking in-process and resets and lead to stopping the back at the electric motor car completely, and the spring that moves away to avoid possible earthquakes reset process drives the hub and stops antiport, causes the hub to stop inside shoe and produces reverse power, produces the abnormal sound, aggravates the draw-in groove and assaults, influences braking safety.
Disclosure of Invention
The utility model provides a novel hub brake flexible connection structure aiming at the defects that abnormal sound is generated after a hub brake stops an electric two-wheeled vehicle and the joint of the hub brake and a bottom fork is impacted to influence the braking safety in the prior art.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model provides a hub flexible connection structure of stopping, includes the chain stay, the hub is stopped, shaft, wheel, the front end of chain stay rotates to be connected on the frame, the one end of shaft with the rear end of chain stay is connected, the hub is stopped the cover and is located the shaft is epaxial and with the chain stay is connected, the wheel with the shaft rotates to be connected, still includes flexible adapter sleeve, flexible adapter sleeve establishes the epaxial, the hub is stopped to pass through flexible adapter sleeve with the wheel hub is connected.
The flexible connecting sleeve plays a role in buffering, acts on the wheel shaft and the hub brake, and can effectively absorb impact force generated when the wheel brake stops, so that the problem of abnormal sound generated by the reverse rotation of the hub brake due to the reset of the shock-absorbing spring during braking is solved, the impact force of the hub brake and the bottom fork at the connecting position in the vehicle braking process is relieved, metal fatigue is effectively delayed, the braking safety of the electric two-wheeled vehicle adopting the utility model is ensured, and the service life of the utility model is prolonged.
Preferably, the hub flexible connection structure that stops, flexible adapter sleeve include adapter sleeve inner circle, cushion collar, adapter sleeve outer lane, the adapter sleeve outer lane with the hub is stopped and is connected, the adapter sleeve inner circle with the wheel hub is connected, the cushion collar sets up the adapter sleeve inner circle with between the adapter sleeve outer lane, adapter sleeve inner circle, cushion collar, adapter sleeve outer lane are located same axle center.
The inner ring of the connecting sleeve is used for connecting the wheel shaft, the outer ring of the connecting sleeve is used for connecting the hub brake, and the buffer sleeve plays a role in absorbing and relieving impact force; the three parts are arranged concentrically, when the brake device performs brake action, the outer ring of the connecting sleeve can rotate reversely along with the hub brake, force moving from the hub brake direction is transmitted to the buffer sleeve, the inner ring of the connecting sleeve is sleeved on the wheel shaft and keeps static along with the wheel shaft, and the effects of preventing the wheel shaft from being abraded and protecting the wheel shaft are achieved.
Preferably, in the hub brake flexible connection structure, the length of the inner ring of the connection sleeve is greater than the length of the outer ring of the connection sleeve.
The length of the inner ring of the connecting sleeve is larger than that of the outer ring of the connecting sleeve, so that the inner ring of the connecting sleeve can be fixed without interfering the movement of the outer ring of the connecting sleeve when the screw cap at the wheel shaft end is screwed, and the outer ring of the connecting sleeve can be ensured to rotate along with the brake of the hub.
Preferably, in the hub brake flexible connection structure, the bottom fork is provided with a limiting part, the limiting part is located at the front end of the joint of the wheel shaft and the bottom fork, and the limiting part is connected with the hub brake.
The limiting part is used for fixing the hub brake, when the limiting part is positioned at the front end of the joint of the wheel shaft and the bottom fork, the force which drives the hub brake to rotate when the wheel brake is stopped can be transmitted to the bottom fork through the limiting part and finally acts on the wheel, so that the acting force between the wheel and the ground is increased, and the friction force of the wheel is increased.
Preferably, the hub brake flexible connection structure is provided with a limiting groove, and the limiting part is located in the limiting groove.
The limiting groove is matched with the limiting part and used for increasing the connecting strength of the hub brake and the bottom fork, so that the hub brake is more stable in connection.
Preferably, in the hub brake flexible connection structure, the inner ring and the outer ring of the connection sleeve are made of steel, and the buffer sleeve is made of nitrile rubber.
The strength of the inner ring and the outer ring of the connecting sleeve can be improved by adopting steel materials, so that the inner ring and the outer ring are not easy to wear; the buffer sleeve is made of butadiene-acrylonitrile rubber, and the butadiene-acrylonitrile rubber has high wear resistance and heat resistance and can prolong the service life of the buffer sleeve.
Drawings
FIG. 1 is a sectional view of a flexible connecting sleeve according to the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is an exploded view of the second aspect of the present invention;
fig. 4 is a partial schematic structural view of an electric motorcycle according to the present invention.
Detailed Description
The utility model will be described in further detail below with reference to the accompanying figures 1-4 and the detailed description, but they are not intended to limit the utility model:
example 1
The utility model provides a hub flexible connection structure of stopping, includes bottom fork 1, hub 4, shaft 2, wheel of stopping, the front end of bottom fork 1 rotates to be connected on the frame, the one end of shaft 2 with the rear end of bottom fork 1 is connected, the hub is stopped 4 the cover and is located 2 epaxial and with bottom fork 1 is connected, the wheel with 2 rotations of shaft are connected, still include flexible adapter sleeve 3, the cover of flexible adapter sleeve 3 is established 2 epaxial, the hub is stopped 4 and is passed through flexible adapter sleeve 3 with 2 connections of shaft.
Preferably, the flexible connecting sleeve 3 comprises a connecting sleeve inner ring 31, a buffer sleeve 32 and a connecting sleeve outer ring 33, the connecting sleeve outer ring 33 is connected with the hub brake 4, the connecting sleeve inner ring 31 is connected with the wheel shaft 2, the buffer sleeve 32 is arranged between the connecting sleeve inner ring 31 and the connecting sleeve outer ring 33, and the connecting sleeve inner ring 31, the buffer sleeve 32 and the connecting sleeve outer ring 33 are positioned on the same axis.
Preferably, the length of the inner connecting sleeve ring 31 is greater than the length of the outer connecting sleeve ring 33.
Preferably, the bottom fork 1 is provided with a limiting part 11, the limiting part 11 is located at the front end of the joint of the wheel shaft 2 and the bottom fork 1, and the limiting part 11 is connected with the hub brake 4.
Preferably, the hub brake 4 is provided with a limiting groove 41, and the limiting part 11 is located in the limiting groove 41.
Preferably, the inner ring 31 and the outer ring 33 are made of steel, and the cushion sleeve 32 is made of butadiene-acrylonitrile rubber.
The electric two-wheel vehicle braking process comprises the following steps: the inner shoe block of the hub brake 4 is expanded to brake the wheel; the wheel decelerates and applies force along with the rotation direction of the wheel to the hub brake 4 at the same time, so that the limiting groove 41 is abutted against the limiting part 11, the bottom fork 1 rotates downwards after receiving the force at the limiting part 11, a downward pressure is generated on the wheel, the friction force between the wheel and the ground is increased, and the braking distance is shortened; meanwhile, in the braking process, if the radial runout of the hub brake 4 exceeds the design range, the buffer sleeve 32 in the flexible connecting sleeve 3 is extruded and deformed, and the shoe block in the hub brake 4 is ensured to be fully contacted with the wheel, so that the automatic centering effect is achieved, and the braking force is enhanced;
when the electric two-wheeled vehicle adopting the utility model is completely braked and stopped, the deformation quantity of the shock-absorbing spring is released, at the moment, the shock-absorbing spring is reset to drive the hub brake 4 to rotate reversely, the connecting sleeve outer ring 33 rotates reversely with the hub brake 4, the connecting sleeve inner ring 31 and the wheel shaft 2 keep relatively static, and the buffer sleeve 32 absorbs the force transmitted from the connecting sleeve outer ring 33 to buffer.
The material of the buffer sleeve 32 includes but not limited to nitrile rubber, and can also be silica gel, soft metal such as: aluminum, copper, and the like.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.
Claims (6)
1. The utility model provides a hub flexible connection structure of stopping, includes chain stay (1), hub (4), shaft (2), wheel, the front end of chain stay (1) is rotated and is connected on the frame, the one end of shaft (2) with the rear end of chain stay (1) is connected, hub (4) of stopping the cover locate on shaft (2) and with chain stay (1) are connected, the wheel with shaft (2) rotate to be connected its characterized in that: still include flexible adapter sleeve (3), flexible adapter sleeve (3) cover is established on shaft (2), the hub is stopped (4) and is passed through flexible adapter sleeve (3) with shaft (2) are connected.
2. The hub brake flexible connection structure of claim 1, wherein: flexible adapter sleeve (3) are including adapter sleeve inner circle (31), cushion collar (32), adapter sleeve outer lane (33) with hub (4) of stopping are connected, adapter sleeve inner circle (31) with shaft (2) are connected, cushion collar (32) set up adapter sleeve inner circle (31) with between adapter sleeve outer lane (33), adapter sleeve inner circle (31), cushion collar (32), adapter sleeve outer lane (33) are located the same axle.
3. A hub brake flexible connection structure according to claim 2, wherein: the length of the connecting sleeve inner ring (31) is larger than that of the connecting sleeve outer ring (33).
4. A hub brake flexible connection structure according to claim 3, wherein: the flat fork (1) is provided with a limiting part (11), the limiting part (11) is positioned at the front end of the joint of the wheel shaft (2) and the flat fork (1), and the limiting part (11) is connected with the hub brake (4).
5. A hub brake flexible connection structure according to claim 4, characterized in that: the hub brake (4) is provided with a limiting groove (41), and the limiting part (11) is located in the limiting groove (41).
6. A hub brake flexible connection structure according to claim 2, wherein: the connecting sleeve inner ring (31) and the connecting sleeve outer ring (33) are made of steel, and the buffer sleeve (32) is made of butadiene-acrylonitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122179007.2U CN215851704U (en) | 2021-09-09 | 2021-09-09 | Hub brake flexible connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122179007.2U CN215851704U (en) | 2021-09-09 | 2021-09-09 | Hub brake flexible connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215851704U true CN215851704U (en) | 2022-02-18 |
Family
ID=80258437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122179007.2U Active CN215851704U (en) | 2021-09-09 | 2021-09-09 | Hub brake flexible connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215851704U (en) |
-
2021
- 2021-09-09 CN CN202122179007.2U patent/CN215851704U/en active Active
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