CN217456256U

CN217456256U - Electronic wire pulling device for bicycle and bicycle

Info

Publication number: CN217456256U
Application number: CN202122792235.7U
Authority: CN
Inventors: 于锋; 高海涛; 高昂
Original assignee: Qingdao Magene Intelligence Technology Co Ltd
Current assignee: Qingdao Magene Intelligence Technology Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-09-20
Anticipated expiration: 2031-11-15

Abstract

The utility model discloses an electronic wire-drawing device for a bicycle and a bicycle, which relate to the technical field of bicycle speed change, and the key point of the technical scheme is a wire-winding disc which is connected with one end of a speed change wire and can wind the speed change wire; the outside of the cable drum is provided with a abdicating groove, the abdicating groove comprises two end faces, namely a first end face and a second end face, the first end face is provided with a through hole, the first end face is connected with the second end face, the included angle is not more than 90 degrees, and the length of the second end face is not less than the radius of the cable drum; the motor is used for driving the wire twisting disc to rotate; the main control unit is used for controlling the switch, the rotation direction and the rotation time of the motor; when in transformation, the whole set of the transmission is not required to be replaced, and only the wire pulling device is required to be replaced, so that the cost investment is reduced.

Description

Electronic wire pulling device for bicycle and bicycle

Technical Field

The utility model relates to a technical field of bicycle variable speed, more particularly, the utility model relates to an electronic wire drawing device and bicycle for bicycle.

Background

The traditional speed changer applied to the bicycle is connected with a speed change deflector rod device and a speed changer through a sleeve with a steel wire penetrating inside, the speed change deflector rod is manually shifted, and the deflector rod pulls the steel wire to position and pull the speed changer through a ratchet structure, so that speed change is realized; in the structural transmission process, because the steel wire needs to be routed along the bicycle frame and can pass through a plurality of bends, the resistance in the transmission process is large, the force arm design is lengthened along with the push rod for saving labor, the shifting distance in the shifting process is lengthened, the shifting distance is not easy to control by a user in the use process, and the danger is easily caused by the speed change error;

upgrading a conventional transmission to an electrically variable transmission now requires a significant cost and requires a complete replacement of the conventional transmission.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an electronic guy wire device for bicycle need not to change the whole set of derailleur during transformation, only need change guy wire device can, the cost is reduced drops into.

In order to achieve the above purpose, the utility model provides a following technical scheme: an electronic wire pulling device for a bicycle comprises,

the cable winding disc is connected with one end of the speed change cable and can wind the speed change cable;

the outside of the cable reel is provided with a abdicating groove, the abdicating groove comprises two end faces, namely a first end face and a second end face, the first end face is provided with a through hole, the first end face is connected with the second end face, the included angle is not more than 90 degrees, and the length of the second end face is not less than the radius of the cable reel;

the motor is used for driving the wire twisting disc to rotate;

and a main control unit for controlling the on/off, rotation direction and rotation time of the motor.

By adopting the technical scheme, the length of the speed change line wound on the outer side of the stranded wire plate can be controlled by controlling the rotation direction and the rotation time of the motor, so that the gear change of the transmission is realized; when the existing transmission is modified by the mode, the whole transmission is not required to be replaced, and only the wire drawing device is required to be replaced, so that the cost input is reduced.

The utility model discloses further set up to: the motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the stranded wire disc.

Through adopting above-mentioned technical scheme, through setting up the reduction gear, can slow down the rotational speed of motor output to make the control to the length of variable speed line rolling in the stranded conductor dish outside more accurate.

The utility model discloses further set up to: the speed reducer is used for reducing the rotating speed output by the motor through speed change gears meshed with each other.

The utility model discloses further set up to: the device also comprises a signal input unit which is connected with the main control unit and inputs a speed change instruction to the main control unit; the gear shift command includes a rotation direction and a rotation time of the motor.

By adopting the technical scheme, the signal input unit is arranged, so that an operator can actively input a speed change instruction to adjust the gear of the transmission.

The utility model discloses further set up to: an annular accommodating groove is formed in the outer side of the wire twisting disc, and when the speed change line is wound on the wire twisting disc, the speed change line is embedded into the accommodating groove.

Through adopting above-mentioned technical scheme, through the setting of the groove of stepping down and through-hole, be convenient for install the variable speed line on the capstan.

The utility model discloses further set up to: the first end face of the abdicating groove is a plane, the axial direction of the through hole is perpendicular to the first end face and communicated with the accommodating groove, the end part of the speed change line is connected with an anchoring hammer head which is tightly propped against the first end face, and the speed change line penetrates through the through hole and then is embedded into the abdicating groove.

The utility model discloses further set up to: the junction of the through hole and the accommodating groove is provided with a transition groove, and the transition groove realizes smooth transition of the through hole and the accommodating groove.

By adopting the technical scheme, smooth transition between the through hole and the accommodating groove is realized through the transition groove, so that the speed change line is not bent at a sharp turning part, and the service life of the speed change line is prolonged.

Another object of the present invention is to provide a bicycle, which comprises an electronic cable pulling device.

To sum up, the utility model discloses compare in prior art and have following beneficial effect:

1. the utility model does not need to replace the whole set of the transmission when in reconstruction, and only needs to replace the wire drawing device, thereby reducing the cost investment;

2. the utility model can reduce the rotating speed output by the motor by arranging the speed reducer, thereby enabling the control of the length of the variable speed line wound outside the stranded wire disc to be more accurate;

3. by arranging the signal input unit, the utility model, an operator can actively input a speed change instruction to adjust the gear of the transmission;

4. the utility model is convenient for installing the variable speed line on the cable reel through the arrangement of the abdicating groove and the through hole;

5. the utility model discloses a pass the rounding off between aqueduct realization through-hole and the holding tank to there is not sharp-pointed turn department to buckle the variable speed line, improved the life of variable speed line.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view of a cable reel of an embodiment;

FIG. 3 is a schematic view of an embodiment embodying a transition channel.

In the figure: 1. a motor; 2. a speed reducer; 3. a shift line; 4. a wire stranding disc; 41. accommodating grooves; 42. a yielding groove; 43. A through hole; 44. a transition groove; 5. and a main control unit.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustration and not for limitation of the present invention.

The present invention will be further described with reference to the accompanying drawings and preferred embodiments.

The first embodiment is as follows: an electronic wire pulling device for a bicycle, which is shown in attached figures 1, 2 and 3, comprises a wire twisting disc 4 for winding a speed change wire 3, a motor 1 for driving the wire twisting disc 4 to rotate and a main control unit 5 for controlling the motor 1; one end of a specific speed change line 3 is connected with a stranded wire disc 4, and a main control unit 5 can control the opening and closing, the rotating direction and the rotating time of the motor 1; the rotation direction and the rotation time herein refer to the rotation direction and the rotation time of the output shaft of the motor 1.

The main control unit 5 controls the rotation direction of the motor 1 and can control whether the speed change line 3 is wound or unwound on the stranded wire disc 4, and the main control unit 5 controls the rotation time of the motor 1 and can control the winding and unwinding lengths of the speed change line 3; when the gear of the transmission needs to be adjusted, the rotation direction and the rotation time of the motor 1 are controlled only by the main control unit 5.

Specifically, this embodiment still includes reduction gear 2, and its input is connected with motor 1, and the output is connected with stranded conductor dish 4, can slow down the rotational speed of motor 1 output through setting up of reduction gear 2 to make when controlling the length of 3 rolling of shift line and unreeling through control time, more accurate that can control.

Specifically, the speed reducer 2 comprises a shell and speed reducing gears which are rotatably connected in the shell, and two adjacent speed reducing gears are meshed with each other; the multistage reduction gear can increase the reduction ratio of the reduction gear 2. Specifically, in the present embodiment, five speed change gears are provided in the housing, which are engaged in sequence; in the present embodiment, the reduction ratio of the speed reducer 2 is set to 900:1, and in other embodiments, the reduction ratio of the speed reducer 2 may be set according to specific situations, for example, 700:1, etc.

Specifically, an annular accommodating groove 41 is formed in the outer side of the stranded wire disc 4, and when the speed change wire 3 is wound on the outer side of the stranded wire disc 4, the speed change wire is embedded into the annular accommodating groove 41; specifically, the radius of the inner side of the annular accommodating groove 41 is R, the winding or unwinding distance of the speed change line 3 on the stranding disc 4 is L, and since the rotation speed output by the motor 1 is constant in the embodiment, after the speed is reduced by the speed reducer 2, the rotation speed of the stranding disc 4 is also constant, so that L is 2 pi RNT, where T is the rotation time of the motor 1. Also can verify from among the above-mentioned formula, only need through the rotation time of control motor 1, just can accurate control variable speed line 3 on stranded conductor dish 4 around the distance of rolling up and unreeling.

In this embodiment, when the span speed change is required, that is, the step-by-step speed change, for example, from 3-speed to 5-speed, only the multiple of the time unit for controlling the motor 1 needs to be increased, where the time unit refers to the time required by the motor 1 to drive the transmission to increase the speed or decrease the speed by one step.

Specifically, the outside of the stranded wire disc 4 is provided with a yielding groove 42, one side wall of the yielding groove 42 is a plane, the side wall is provided with a through hole 43 perpendicular to the side wall, and the through hole 43 is communicated with the accommodating groove 41; the end part of the speed change line 3 is connected with an anchoring hammer head which is tightly propped against the plane side wall of the abdicating groove 42, and the speed change line 3 penetrates through the through hole 43 and then is embedded into the abdicating groove 42; one end of the speed change line 3 is convenient to be connected to the wire twisting disc 4 through the arrangement of the anchoring hammer head and the abdication groove 42, and the speed change line 3 can be installed on the wire twisting disc 4 more conveniently and rapidly. Specifically, holding tank 41 includes the both ends face, is first terminal surface and second terminal surface respectively, first terminal surface be equipped with through-hole 43, the axial of through-hole 43 is perpendicular with first terminal surface, first terminal surface with the second terminal surface be connected, the contained angle is not more than 90, the length of second terminal surface be not less than the radius of stranded conductor dish 4.

Specifically, a transition groove 44 is arranged at the connection position of the through hole 43 and the accommodating groove 41, and the smooth transition of the through hole 43 and the accommodating groove 41 is realized by the transition groove 44; by providing the transition groove 44, there is no sharp turn at the connection between the through hole 43 and the receiving groove 41 to bend the shift cable 3, thereby improving the service life of the shift cable 3.

Specifically, the present embodiment further includes a signal input unit, which is connected to the main control unit 5 and inputs a speed change command to the main control unit 5, where the speed change command includes a rotation direction and a rotation time of the motor 1; an operator transmits the rotation direction and the rotation time of the motor 1 serving as a speed change instruction to the main control unit 5 through the signal input unit, and when the main control unit 5 receives the speed change instruction, the main control unit starts the motor 1 according to the speed change instruction and controls the motor 1 to act according to the rotation direction and the rotation time of the motor 1.

Specifically, in this embodiment, the signal input unit adopts a key controller; preferably, the button controller is provided with two buttons, one button is used as a forward rotation signal input of the motor 1, and the other button is used as an electrode reverse rotation signal input; pressing the key once independently, wherein the input rotation time of the motor 1 is the rotation time of the motor 1 required by the speed changer to be adjusted between two adjacent degrees; in addition, the rotation time of the motor 1 input by two times of quick pressing can be set to be twice of the rotation time of the motor 1 required by the speed changer for adjusting between two adjacent degrees, or a long-time pressing button can be set, and the rotation time of the motor 1 input by two times of the rotation time of the motor 1 required by the speed changer for adjusting between two adjacent degrees can be set.

Specifically, in this embodiment, the main control unit 5 is a PCBA board.

In the prior art, among the chinese utility model patent with the publication number CN205737958U, a worm gear type speed change wire 3 forming control mechanism for a bicycle electronic transmission is disclosed, wherein a motor 1 thereof drives a worm to rotate, a winding wheel is fixed on a worm gear, and the worm gear are engaged with each other; the sensor of feedback stroke is provided with in the axis of rotation of worm wheel, and the sensor is used for detecting the worm wheel pivoted number of turns, judges the distance that change speed line 3 was around rolling up and unreeling on the take-up reel through the detection of number of turns. The structure in the prior art has the following disadvantages compared to the structure of the present application; the transmission mode of the worm and the worm wheel is adopted, so that the overall length of the device is increased to a certain extent; according to the device, only the motor 1 needs to be controlled, and the main control unit 5 only needs to be arranged on the side edge of the motor 1, so that the overall length and the size of the device are greatly shortened; in the prior art, a sensor is arranged on the side edge of a worm wheel to detect the number of turns of the rotation of the worm wheel, and a controller connected with the sensor can be arranged on the side edge of the worm wheel only from the outside, so that the overall length of the device is further increased; because the restriction of worm wheel and worm meshing mode, can't control the distance that variable speed line 3 was wound and was unreeled on the take-up reel through the mode of control motor 1 rotation time, only can set up the sensor in addition and detect the number of turns of turbine rotation, because the data feedback that the sensor detected to the controller, there will always be the time difference between controlling motor 1 action by the controller again, this has just also led to its control accuracy to be far below this application control accuracy.

The working principle of the electronic wire pulling device for the bicycle when in use is as follows: when riding, operating personnel can input the rotation direction and the rotation time of the motor 1 through the signal input unit, thereby controlling the motor 1 to rotate through the main control unit 5, winding or unwinding the speed change line 3 through the motor 1, and realizing the adjustment of the gear of the transmission.

Example two: a bicycle comprises the electronic wire pulling device in at least one embodiment.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An electronic wire drawing device for a bicycle, characterized in that:

comprises the steps of (a) preparing a substrate,

a wire winding disc (4) which is connected with one end of the speed change wire (3) and can wind the speed change wire (3);

the outside of the wire twisting disc (4) is provided with a yielding groove (42), the yielding groove (42) comprises two end faces, namely a first end face and a second end face, the first end face is provided with a through hole (43), the first end face is connected with the second end face, the included angle is not more than 90 degrees, and the length of the second end face is not less than the radius of the wire twisting disc (4);

the motor (1) is used for driving the wire twisting disc (4) to rotate;

and a main control unit (5) for controlling the switching, the rotation direction and the rotation time of the motor (1).

2. The electronic wire pulling device for bicycle according to claim 1, wherein: the motor is characterized by further comprising a speed reducer (2), wherein the input end of the speed reducer is connected with the motor (1), and the output end of the speed reducer is connected with the wire twisting disc (4).

3. An electronic wire pulling device for a bicycle according to claim 2, wherein: the speed reducer (2) reduces the rotating speed output by the motor (1) through 5 mutually meshed speed change gears.

4. The electronic wire pulling device for bicycle according to claim 1, wherein: the gear shifting control system further comprises a signal input unit which is connected with the main control unit (5) and inputs a gear shifting command to the main control unit (5); the gear shift command includes a rotation direction and a rotation time of the motor (1).

5. The electronic wire pulling device for bicycle according to claim 1, wherein: an annular accommodating groove (41) is formed in the outer side of the wire winding disc (4), and when the speed change wire (3) is wound on the wire winding disc (4), the speed change wire (3) is embedded into the accommodating groove (41).

6. An electronic wire pulling device for a bicycle according to claim 5, wherein: the first end face of the abdicating groove (42) is a plane, the axial direction of the through hole (43) is perpendicular to the first end face and communicated with the accommodating groove (41), the end part of the speed change line (3) is connected with an anchoring hammer head which is tightly abutted to the first end face, and the speed change line (3) penetrates through the through hole (43) and then is embedded into the abdicating groove (42).

7. The electronic wire pulling device for bicycle according to claim 6, wherein: a transition groove (44) is arranged at the joint of the through hole (43) and the accommodating groove (41), and the transition groove (44) realizes smooth transition of the through hole (43) and the accommodating groove (41).

8. A bicycle, characterized in that: comprising at least one electronic pull-out device according to claims 1-7.