CN210318265U - Electric control hub braking device - Google Patents
Electric control hub braking device Download PDFInfo
- Publication number
- CN210318265U CN210318265U CN201820073145.8U CN201820073145U CN210318265U CN 210318265 U CN210318265 U CN 210318265U CN 201820073145 U CN201820073145 U CN 201820073145U CN 210318265 U CN210318265 U CN 210318265U
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- China
- Prior art keywords
- main shaft
- nut
- hub
- sleeve
- shaft
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- Expired - Fee Related
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Abstract
The utility model discloses an electric control hub braking device, which comprises a hub component, a main shaft and a braking component, wherein the main shaft and the braking component are arranged in the hub component; the main shaft is a fixed shaft; the main shaft is arranged at the axis of the hub assembly, and the hub assembly is connected with a wheel through a spoke; the right end of the hub component is provided with a chain wheel connected with a chain; the brake assembly comprises a lead screw shaft sleeve which is sleeved on the main shaft in a clearance mode; the two sides of the outer surface of the screw rod shaft sleeve are respectively provided with a left nut and a right nut which can only axially move and have opposite rotation directions; the right end of the lead screw shaft sleeve is also provided with a transmission gear; the stepping motor is fixed on the main shaft and drives the lead screw shaft sleeve to rotate through a gear belt; a plurality of brake blocks are arranged on the opposite surfaces of the left nut and the right nut; the annular brake disc is arranged between the left nut and the right nut and is fixedly connected to the inside of the hub assembly; the brake pads are parallel to the surface of the brake disc. The utility model discloses make the braking mode of bicycle by manual extension to automatically controlled, increased bicycle braking system's reliability.
Description
Technical Field
The utility model relates to a wheel hub stopper field, concretely relates to automatically controlled wheel hub arresting gear.
Background
The popularization of sharing bicycles prompts the technical innovation of bicycle equipment, and more intelligent devices are developed and applied. Wheel hub braking is generally applied to automobiles, and a braking device of a bicycle adopts a wheel edge band-type brake or a disc brake type. The hub brake is beneficial to improving the reliability and the driving safety of a bicycle brake system, has a certain application prospect in the field of bicycle equipment, is gradually implemented by some manufacturers, but the brake for the bicycle, which realizes the brake by means of electric driving, is not invented.
SUMMERY OF THE UTILITY MODEL
The utility model provides an automatically controlled wheel hub arresting gear enables bicycle braking system and realizes the electrocontrolled.
For solving the technical problem, the utility model discloses the technical scheme who adopts does:
an electric control hub braking device comprises a hub assembly, a main shaft and a braking assembly, wherein the main shaft and the braking assembly are arranged in the hub assembly;
the main shaft is a fixed shaft; the two ends of the main shaft are arranged at the axle center of the hub assembly through the cylindrical roller bearings, the hub assembly can rotate by taking the main shaft as the axle center through the cylindrical roller bearings, and the hub assembly is connected with a wheel through a spoke; the right end of the hub component is provided with a chain wheel connected with a chain;
the brake assembly comprises a lead screw shaft sleeve sleeved on the main shaft, and the lead screw shaft sleeve is in clearance fit with the main shaft; the left side and the right side of the outer surface of the screw rod shaft sleeve are respectively provided with a left nut and a right nut which can only axially move and have opposite screwing directions;
the right end of the lead screw shaft sleeve is also provided with a transmission gear; the stepping motor is fixed on the main shaft, a gear is arranged on a rotating shaft of the stepping motor, and the rotating shaft of the stepping motor is meshed with the transmission gear through a gear belt for transmission;
a plurality of brake blocks are arranged on the opposite surfaces of the left nut and the right nut; the annular brake disc is arranged between the left nut and the right nut and is fixedly connected to the inside of the hub assembly; the surfaces of the brake pad and the brake disc are parallel to each other;
key grooves are respectively formed in the left end and the right end of the main shaft;
the key groove at the left end of the main shaft is fixedly connected with a left fixing sleeve through a flat key, and the bottom of the left fixing sleeve extends downwards to form a limiting groove; the bottom of the left nut extends leftwards to form a limiting column, and the limiting column of the left nut is embedded in a limiting groove of the left fixing sleeve;
a key groove at the right end of the main shaft is fixedly connected with the lower part of the right fixing sleeve through a flat key, and a limiting groove extends downwards from the bottom of the right fixing sleeve; the bottom of right nut extends to the right and has a spacing post, and the spacing post of right nut inlays in the spacing inslot of fixed cover on the right side.
According to the scheme, the hub assembly comprises a left end cover, a right end cover and a shell; the left end cover is fixedly connected to the left end of the shell, and the right end cover is fixedly connected to the right end of the shell; the left end of the main shaft is connected to the center of the left end cover through a cylindrical roller bearing, and the right end of the main shaft is also connected to the center of the right end cover through a cylindrical roller bearing.
According to the scheme, the upper part of the right fixing sleeve is a motor fixing sleeve; the stepping motor is assembled in the motor fixing sleeve in an interference fit manner.
According to the scheme, a first thrust ball bearing is arranged between the left end of the screw rod shaft sleeve and the left fixed sleeve, and a second thrust ball bearing is arranged between the right end of the screw rod shaft sleeve and the right fixed sleeve.
According to the scheme, the right end of the main shaft is provided with the mutually communicated through holes which are convenient for the electrified wire harness of the stepping motor to pass through along the axial direction and the radial direction of the main shaft; the lower part of the right fixed sleeve is provided with a radial through hole which is mutually communicated with the radial through hole on the main shaft and is convenient for the electrified wire harness of the stepping motor to pass through.
According to the scheme, the ball bodies are placed between the left nut or the right nut and the thread screwing groove of the screw rod shaft sleeve.
According to the scheme, the tooth number of the rotating shaft gear of the stepping motor is smaller than that of the transmission gear of the lead screw shaft sleeve.
Compared with the prior art, the beneficial effects of the utility model are that: the stepping motor is adopted to drive the screw rod shaft sleeve to rotate so as to drive the left nut and the right nut to move in an opposite direction or in a separated direction to realize braking, so that the braking mode of the bicycle is manually extended to electric control, and the reliability and the driving safety of a bicycle braking system are improved.
Drawings
FIG. 1 is a sectional view of the overall structure of the present invention;
FIG. 2 is a schematic half-sectional view of an assembly structure of the spindle and the spindle sleeve of the present invention;
FIG. 3 is a schematic view of a half-section structure of a middle left nut of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic view of a half-section structure of the right-middle nut of the present invention;
FIG. 6 is a right side view of FIG. 5;
fig. 7 is a sectional schematic view of the middle-left fixing sleeve of the utility model;
FIG. 8 is a left side view of FIG. 7;
fig. 9 is a sectional schematic view of the middle-right fixing sleeve of the utility model;
fig. 10 is a left side view of fig. 9.
Detailed Description
The following description will be made in conjunction with the accompanying drawings, wherein the reference numerals are given by way of illustration: 1-main shaft, 2-cylindrical roller bearing, 3-left end cover, 4-screw, 5-shell, 6-left fixed sleeve, 7-right nut, 8-first thrust ball bearing, 9-screw shaft sleeve, 10-left nut, 11-brake pad, 12-brake disc, 13-gear belt, 14-stepping motor, 15-right fixed sleeve, 16-right end cover, 17-chain wheel, 18-transmission gear, 19-second thrust ball bearing.
The utility model discloses a wheel hub subassembly to and arrange inside main shaft 1 and the braking subassembly of wheel hub subassembly in.
The main shaft 1 is a stepped shaft and is made of HT200 steel, and key grooves are formed in the left end and the right end of the main shaft respectively. Through holes which are communicated with each other are processed at the right end of the main shaft 1 along the axial direction and the radial direction of the main shaft, so that an electrified wire harness of the stepping motor 14 can conveniently pass through the through holes. The main shaft 1 is fixed against movement and rotation.
The wheel hub assembly is connected with a wheel through a spoke and comprises a left end cover 3, a right end cover 16 and a shell 5. A circular left end cap 3 is attached to the left end of the housing 5 by four screws 4 and a circular right end cap 16 is also attached to the right end of the housing 5 by four screws 4. The left end of the main shaft 1 is connected to the center of the left end cover 3 through the cylindrical roller bearing 2, and the right end of the main shaft 1 is also connected to the center of the right end cover 16 through the cylindrical roller bearing 2. The right end of the right end cap 16 is provided with a sprocket 17 for transmitting power with a bicycle chain. The hub assembly is rotationally movable about the main shaft 1 by means of cylindrical roller bearings 2 at both ends.
The brake assembly comprises a screw rod shaft sleeve 9, a left nut 10, a right nut 7, a left fixing sleeve 6, a right fixing sleeve 15, a stepping motor 14, a gear belt 13, a brake pad 11 and a brake disc 12.
The lead screw shaft sleeve 9 is sleeved on the main shaft 1, is in clearance fit and can freely rotate on the main shaft 1. The left side and the right side of the outer surface of the lead screw shaft sleeve 9 are provided with threads with opposite screwing directions. Corresponding to the thread on the outer surface of the lead screw shaft sleeve 9, the left side of the lead screw shaft sleeve 9 is provided with a left nut 10, and the right side is provided with a right nut 7. And a ball body is arranged between the thread screwing groove of the left nut 10 or the right nut 7 and the screw shaft sleeve 9 to be used as an intermediate transmission body so as to reduce the friction between the two.
The bottom of the left nut 10 extends to the left with a restraining post. The key groove at the left end of the main shaft 1 is fixedly connected with a left fixing sleeve 6 through a flat key, and the bottom of the left fixing sleeve 6 extends downwards to form a limiting groove. The limit post of the left nut 10 is embedded in the limit groove of the left fixing sleeve 6, so that the left nut 10 cannot rotate and can only move axially.
The bottom of the right nut 7 extends to the right with a limit post. The key groove at the right end of the main shaft 1 is fixedly connected with the lower part of the right fixing sleeve 15 through a flat key, and the bottom of the right fixing sleeve 15 extends downwards to form a limiting groove. The limit post of the right nut 7 is embedded in the limit groove of the right fixing sleeve 15, so that the right nut 7 cannot rotate and can only move axially. The upper portion of the right fixed sleeve 15 is a motor fixed sleeve, and the stepping motor 14 is assembled in the motor fixed sleeve in an interference fit manner, so that the stepping motor 14 cannot move or rotate. The lower portion of the right fixing sleeve 15 is further provided with a radial through hole which is communicated with the radial through hole of the main shaft 1, so that the energizing wire harness of the stepping motor 14 can be led out to the outside through the through hole.
The right end of the lead screw shaft sleeve 9 is provided with a transmission gear 18. The end of the rotating shaft of the stepping motor 14 is provided with a gear, and is meshed with a transmission gear 18 of the lead screw shaft sleeve 9 through a gear belt 13, so that the stepping motor 14 can drive the lead screw shaft sleeve 9 to rotate after rotating, and the left nut 10 and the right nut 7 are driven to move in an opposite direction or in a separated direction. The gear belt 13 is a rubber gear belt. The number of teeth of the rotating shaft gear of the stepping motor 14 is less than that of the teeth of the transmission gear 18 of the lead screw shaft sleeve 9, so that the effects of reducing speed and increasing torque are achieved, and larger braking force can be provided.
A first thrust ball bearing 8 is arranged between the left end of the screw rod shaft sleeve 9 and the left fixed sleeve 6, and a second thrust ball bearing 19 is arranged between the right end of the screw rod shaft sleeve 9 and the right fixed sleeve 15. The screw rod shaft sleeve 9 is restrained by the first thrust ball bearing 8 and the second thrust ball bearing 19, so that the screw rod shaft sleeve 9 cannot move axially and can only rotate.
The opposite surfaces of the left nut 10 and the right nut 7 are uniformly provided with a plurality of brake pads 11, and the brake pads 11 are annular, made of wear-resistant rubber and firmly adhered to the nuts.
A circular annular brake disc 12 is provided between the left nut 10 and the right nut 7 and is fixedly connected to the inside of the housing 5. The surfaces of the brake disk 12 and the brake pad 11 are parallel to each other.
After the stepping motor 14 is electrified and rotates forwards, the screw shaft sleeve 9 is driven to rotate through the gear belt 13, so that the left nut 10 and the right nut 7 move oppositely, and the brake disc 12 is pressed by the brake pad 11, so that the brake of the hub assembly is realized; when the stepping motor 14 rotates reversely, the left nut 10 and the right nut 7 move apart from each other, and the brake pad 11 and the brake disc 12 are released from the braking state of the hub unit.
Claims (7)
1. An automatically controlled wheel hub arresting gear which characterized in that: comprises a hub component, a main shaft (1) and a brake component, wherein the main shaft and the brake component are arranged in the hub component;
the main shaft (1) is a fixed shaft; the two ends of the main shaft (1) are arranged at the axle center of the hub assembly through the cylindrical roller bearings (2), the hub assembly can rotate by taking the main shaft (1) as the axle center through the cylindrical roller bearings (2), and the hub assembly is connected with a wheel through a spoke; the right end of the hub component is provided with a chain wheel (17) connected with a chain;
the brake assembly comprises a screw rod shaft sleeve (9) sleeved on the main shaft (1), and the screw rod shaft sleeve (9) is in clearance fit with the main shaft (1); the left side and the right side of the outer surface of the lead screw shaft sleeve (9) are respectively provided with a left nut (10) and a right nut (7) which can only axially move and have opposite screwing directions;
a transmission gear (18) is also arranged at the right end of the lead screw shaft sleeve (9); a stepping motor (14) is fixed on the main shaft (1), a rotating shaft of the stepping motor (14) is provided with a gear and is in meshed transmission with a transmission gear (18) through a gear belt (13);
a plurality of brake blocks (11) are arranged on the opposite surfaces of the left nut (10) and the right nut (7); the annular brake disc (12) is arranged between the left nut (10) and the right nut (7) and is fixedly connected to the inside of the hub assembly; the surfaces of the brake pad (11) and the brake disc (12) are parallel to each other;
key grooves are respectively formed in the left end and the right end of the main shaft (1);
a key groove at the left end of the main shaft (1) is fixedly connected with a left fixing sleeve (6) through a flat key, and the bottom of the left fixing sleeve (6) extends downwards to form a limiting groove; the bottom of the left nut (10) extends leftwards to form a limiting column, and the limiting column of the left nut (10) is embedded in a limiting groove of the left fixing sleeve (6);
a key groove at the right end of the main shaft (1) is fixedly connected with the lower part of the right fixing sleeve (15) through a flat key, and the bottom of the right fixing sleeve (15) extends downwards to form a limiting groove; the bottom of right nut (7) extends to the right and has a spacing post, and the spacing post of right nut (7) inlays in the spacing inslot of fixed cover (15) on the right side.
2. An electronically controlled hub braking device according to claim 1, wherein: the hub assembly comprises a left end cover (3), a right end cover (16) and a shell (5); the left end cover (3) is fixedly connected to the left end of the shell (5), and the right end cover (16) is fixedly connected to the right end of the shell (5); the left end of the main shaft (1) is connected to the center of the left end cover (3) through the cylindrical roller bearing (2), and the right end of the main shaft (1) is also connected to the center of the right end cover (16) through the cylindrical roller bearing (2).
3. An electronically controlled hub braking device according to claim 1, wherein: the upper part of the right fixing sleeve (15) is a motor fixing sleeve; the stepping motor (14) is assembled in the motor fixing sleeve in an interference fit manner.
4. An electronically controlled hub braking device according to claim 1, wherein: a first thrust ball bearing (8) is arranged between the left end of the screw rod shaft sleeve (9) and the left fixing sleeve (6), and a second thrust ball bearing (19) is arranged between the right end of the screw rod shaft sleeve (9) and the right fixing sleeve (15).
5. An electronically controlled hub braking device according to claim 1, wherein: the right end of the main shaft (1) is provided with through holes which are convenient for an electrified wire harness of the stepping motor (14) to pass through and are communicated with each other along the axial direction and the radial direction of the main shaft; the lower part of the right fixing sleeve (15) is provided with a radial through hole which is mutually communicated with the radial through hole on the main shaft (1) and is convenient for the electrified wire harness of the stepping motor (14) to pass through.
6. An electronically controlled hub braking device according to claim 1, wherein: and a ball body is arranged between the left nut (10) or the right nut (7) and the thread screwing groove of the screw rod shaft sleeve (9).
7. An electronically controlled hub braking device according to claim 1, wherein: the number of teeth of the rotating shaft gear of the stepping motor (14) is less than that of teeth of the transmission gear (18) of the lead screw shaft sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820073145.8U CN210318265U (en) | 2018-01-17 | 2018-01-17 | Electric control hub braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820073145.8U CN210318265U (en) | 2018-01-17 | 2018-01-17 | Electric control hub braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318265U true CN210318265U (en) | 2020-04-14 |
Family
ID=70121124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820073145.8U Expired - Fee Related CN210318265U (en) | 2018-01-17 | 2018-01-17 | Electric control hub braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318265U (en) |
-
2018
- 2018-01-17 CN CN201820073145.8U patent/CN210318265U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 Termination date: 20210117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |