KR101782780B1

KR101782780B1 - Stand for Electronic Bicyle

Info

Publication number: KR101782780B1
Application number: KR1020150145902A
Authority: KR
Inventors: 김영재
Original assignee: 주식회사 만도
Priority date: 2015-10-20
Filing date: 2015-10-20
Publication date: 2017-09-28
Also published as: KR20170045867A

Abstract

The stand of the electric bicycle is started. The stand of the electric bicycle according to the embodiment of the present invention includes a front frame provided with a front wheel and a handle, a rear frame provided with a rear wheel, and a middle frame positioned between the front frame and the rear frame to provide a pedal and a saddle In a stand of an electric bicycle, a stand includes a support provided at a lower portion of a middle frame provided with a pedal and a pair of stand legs rotatably provided on a support body. In a state where the stand leg is folded along the rotation direction of the pedal When the tip is pointed upward, the tip is turned to face the ground in the spread state.

Description

Stand for Electronic Bicyle}

The present invention relates to a stand of an electric bicycle, and more particularly, to a stand of an electric bicycle provided on a pedal-side frame.

Generally, an electric bicycle includes a motor that rotates a wheel and a battery that supplies power to the motor. That is, a generator is mounted or an electric bicycle of the Series Hybrid type is driven by a motor electrically connected to the battery by rotating the wheel, and charging of the battery is performed by rotating the generator connected to the pedal by a pedal.

On the other hand, a bicycle is basically a chain that steps on a pedal by two feet, and transmits the power of the person who steps on the pedal to the wheel. The chain has a complicated structure due to the connection of a large number of chain pins that mate with the sprocket, the occupied area of the bicycle is large, and there is a problem that the bicycle is detached from the wheel or the passenger's skirt is caught and contaminated.

In recent years, a chainless electric bicycle has been developed and used in consideration of this problem. Electric bicycles without a chain operate by pushing the button located on the handle or by stepping on the pedal.

In addition, the electric bicycle without the chain controls the pedal load so that the user can feel the pedal feeling as if the chain is present when the user depresses the pedal, so that the user can feel the pedal feeling when the pedal is rotated.

Korean Patent Publication No. 10-2014-0038024 (March 28, 2014). This document discloses an electric bicycle comprising a front frame provided with a front wheel and a handle applied by the present applicant, a rear frame provided with a rear wheel, and a center frame positioned between the front frame and the rear frame so as to be provided with a pedal and a saddle Such an electric bicycle is generally not equipped with a stand for standing the bicycle in consideration of appearance.

An embodiment of the present invention is to provide a stand of an electric bicycle having a simple structure and an excellent appearance.

According to an aspect of the present invention, there is provided a stand of an electric bicycle including a front frame provided with a front wheel and a handle, a rear frame provided with a rear wheel, and a middle frame positioned between the front frame and the rear frame, The stand includes a support provided on the lower portion of the middle frame provided with the pedal and a pair of stand legs rotatably provided on the support body. In the folded state of the stand leg along the rotation direction of the pedal, The stand of the electric bicycle may be provided which is pivoted so that its end faces the ground in the head-spread state.

The cam lock unit includes a cam that rotates together with the stand leg, a follower that contacts the cam, and an elastic member that urges the follower toward the cam side. . &Lt; / RTI >

At least two opposing sides of the four sides of the cam form a locking surface and an unlocking surface, respectively, to fix the folded position or the unfolded position of the stand leg, respectively, So that the rotation of the stand leg can be guided.

Further, the cam surface may be provided in an arc shape.

In addition, the cam may form a stopper surface on the other surface between the locking surface and the unlocking surface.

Further, the middle frame provided with the pedal may further include a cylindrical generator, and the stand leg may be provided by bending so as to correspond to the outer shape of the generator.

According to another aspect of the present invention, there is provided a stand of an electric bicycle including a cylindrical middle frame rotatably provided with a pedal, the stand being provided at a lower portion of the middle frame, And the cam lock unit includes a cam that rotates together with the stand leg, a follower that contacts the cam, and a cam follower that moves the follow to the cam side A stand of an electric bicycle including an elastic member to be pressed to elastically rotate the end of the stand leg toward the upper side when the end of the stand leg is folded and toward the ground when the stand leg is in an extended state.

The stand of the electric bicycle according to the embodiment of the present invention is installed in a cylindrical generator provided adjacent to the pedal and the shape of the stand leg corresponds to the generator and the middle frame so that the structure and function of the stand It can be easily implemented.

In addition, the stand of the electric bicycle according to the present embodiment is minimized and optimized so that it can be easily installed in an electromagnet without a chain. Further, the cam of the cam lock unit provided inside the support is provided with a square shape, The user can easily operate the unfolded position, which is very convenient to use the stand.

1 is a perspective view illustrating an electric bicycle having a stand according to an embodiment of the present invention.
2 is a side view of an electric bicycle having a stand according to an embodiment of the present invention.
3 is an exploded view of a stand of an electric bicycle according to an embodiment of the present invention.
4 and 5 are a side view and a sectional view showing a folded state of the stand of the electric bicycle according to the embodiment of the present invention.
6 is a sectional view showing a rotating state of a stand of an electric bicycle according to an embodiment of the present invention.
7 and 8 are a side view and a sectional view showing an unfolded state of a stand of an electric bicycle according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, the embodiments described below are provided as examples so that those skilled in the art will be able to fully understand the spirit of the present invention. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. Further, in order to clearly illustrate the present invention, parts not related to the description are omitted from the drawings, , Length, thickness, etc. may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

1 and 2 are views showing an electric bicycle to which a stand according to an embodiment of the present invention is applied. Prior to the description, the present embodiment exemplifies an electric bicycle having no chain, but the present invention is not limited thereto, and general bicycles and electric bicycles driven by a chain can be applied by a person skilled in the art through appropriate modification and modification.

Referring to the drawings, an electric bicycle of the present embodiment includes a bicycle frame composed of a front frame 10, a middle frame 20, and a rear frame 30.

The front frame 10 includes a front wheel 12 and a handle stay 14 to which the handle portion 13 is connected.

The handle portion 13 includes a handle stem 15 coupled to the lower end of the handle stay 14, a handle bar 16 coupled to the handle stay 14, (17).

The handle stem 15 is provided for height adjustment of the handle portion 13 and the handlebar 16 is provided for determining the steering of the bicycle. In addition, the handle grip 17 is provided with an interface 18 which displays the status of the electric bicycle to the user and transmits the user's requirements to the electronic control unit 40 via a button or a display. The interface 18 is electrically connected to the electronic control unit 40 through wire or wireless. A front wheel 12 is rotatably coupled to a lower end of the handle stay 14.

A generator 21 is provided at one end of the middle frame 20 and pedals 22 are rotatably mounted on both sides of the generator 21. When the user rotates the pedal 22, the rotational force of the pedal 22 is converted into electric energy from the generator 21 and the electric energy of the generator 21 is stored in the battery 23 provided in the rear frame 30, . The generator 21 is provided in a cylindrical shape, and the pedal 22 is located at the center thereof.

Further, the middle frame 20 may further include a saddle tube 25 for installing the saddle 24. The saddle tube 25 is height-adjustably coupled to the seat tube 26 protruding from the rear of the middle frame 20. [

A rear wheel 32 is rotatably mounted on one end of the rear frame 30. A motor 34 is mounted at the center of the rear wheel 32 to rotate the rear wheel 32 to advance the electric bicycle. The motor 34 may include a transmission to allow the user to change the rotational speed of the rear wheels 32 using an interface 18 or a throttle (not shown). The rear frame 30 may be provided with an electronic control unit 40 exemplified as being provided in the middle frame 20 as described above.

3 is an exploded view of a stand of the electric bicycle according to the present embodiment. The stand 50 of the electric bicycle includes a support 51 for installing a stand on a bicycle frame, a stand leg 52 rotatably provided on the support body, And a cam lock unit for controlling the rotation.

The support body 51 includes a pair of mount wells 51a spaced apart from each other by a predetermined distance in the front wheel or rear wheel direction of the bicycle and a mount 51b protruding from the left and right sides of the mount well 51a. The mount well 51a and the mount 51b are formed in a cross shape and are compact so that they can be easily installed on an electric bicycle without deteriorating the appearance.

A stand leg 52 is rotatably provided on the mount well 51a. Since the stand legs 52 are provided as a pair of left and right leg holes 51c through which the sink bar 53 penetrates to allow them to move at the same time, the mount well 51a is provided. The mount 51b has a fastening hole 51d in the vertical direction and fixes the support body 51 to the lower portion of the middle frame 20 by using a fastening member such as a bolt.

The stand legs 52 are made of a metal material and are bent to have a curved shape as a whole. The pair of stand legs 52 are simultaneously operated by the sink bar 53 passing through the mount well 51a.

One end of the stand leg 52 has a bar fixing hole 52a for engaging the sink bar 53 and the stop is bent to correspond to the cylindrical shape of the generator 21 provided in the middle frame 20 . The other end, which is the end side of the pair of stand legs 52 facing the ground, spreads outward in a V shape to stably support the electric bicycle. The bar fixing hole 52a may be formed in a polygonal shape such as a pentagonal shape or a hexagonal shape in addition to the illustrated square, through which a pair of left and right stand legs 52 are simultaneously operated without slippage during rotation.

The cam lock unit is provided inside the mount well 51a to control the turning operation for up-down of the stand leg 52 and includes a cam 54, a follow 55 and an elastic member 56. [

The cam 54 is formed in a square shape and its center is fixed to the sink bar 53 and operates together with the stand leg 52. At least two opposing surfaces of the four sides of the cam 54 form a locking surface 54a and an unlocking surface 54b in a straight line shape to respectively fix the folded position or the unfolded position of the stand leg 52, Shaped cam surface 54c to guide the stand leg 52 so as to smoothly rotate while sliding in contact with the follower 55. [ The remaining surface of the cam 54 forms a linear stopper surface 54d orthogonal to the locking surface 54a and the unlocking surface 54b to prevent excessive rotation of the cam 54. [

The follow 55 is provided in a trapezoidal shape so that the lower bottom surface 55a contacts the cam 54 and the opposite upper surface 55b contacts and receives the elastic member 56. [ The elastic member 56 urges the follow 55 toward the cam 54 to apply force in the direction in which the follow 55 and the cam 54 are always in contact with each other.

4 to 8 are views for explaining the stand operation of the electric bicycle according to the present embodiment.

Referring to the drawings, FIGS. 4 and 5 are views showing a stand installed on an electric bicycle in a folded state.

The stand 50 before use has the end of the stand leg 52 extended upward toward the opposite side of the ground, for example, the middle frame 20, as shown in Fig. The stand leg 52 is bent so as to correspond to the cylindrical body of the generator 21 provided with the pedal 22 and the outer shape of the middle frame 20 so that the folded stand leg 52 can be padded It does not interfere with the user.

5, the locking surface 54a of the cam 54 of the cam lock unit is in contact with the follow 55, as shown in FIG. The stand leg 52 is not easily unfolded by an external impact or the like unless the locking surface 54a supported by the follow 55 by the external force rotates to the cam surface 54c.

When a force is applied to rotate the cam 54 from the outside with the user's arm or foot, the stand leg 52 starts to rotate in the operating direction (clockwise direction) of the pedal. This is because the surface of the stand leg 52 which is in contact with the follower 55 is changed from the locking surface 54a to the cam surface 54c and the cam surface 54c is rounded in an arc shape as shown in Fig. It gently rotates downward clockwise by external force.

FIGS. 7 and 8 are views showing the stand of the electric bicycle according to the present embodiment deployed.

When the external force is sufficiently applied, the stand leg 52 faces the ground as shown in Fig. 7, and the stand leg 52 is rotated 180 degrees from the first folded O road by the rectangular cam 54 . At this time, the surface of the cam 54, which is in contact with the follower 55, is switched from the cam surface 54c to the unlocking surface 54b as shown in Fig.

As described above, the pair of stand legs 52 extended by the contact of the unlocking face 54b of the cam 54 and the follower 55 stably mounts the electric bicycle together with the rear wheel (or the front wheel) on the ground.

On the other hand, since the unlocking face 54b of the cam 54 and the stopper face 54d are in a rectangular shape, the stand leg 52 does not rotate further than the stop position (in the counterclockwise direction) even if an external force acts .

10,20,30 .. Front frame, Middle frame, Rear frame
21 .. Generator 22 .. Pedal
50 .. stand 51 .. support
51a .. Mountwell 51b .. Mount
52 .. stand leg 53 .. sink bar
54. Cams 54a, 54b. Locking faces, unlocking faces
54c .. Cam side 55 .. Follow
56. Elastic member

Claims

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A stand for an electric bicycle comprising a front frame provided with a front wheel and a handle, a rear frame provided with a rear wheel, and a middle frame positioned between the front frame and the rear frame such that a pedal and a saddle are provided,
The stand includes a support provided at a lower portion of the middle frame provided with the pedal and a pair of stand legs rotatably provided at the support,
The stand leg is pivoted in a folded state along the rotation direction of the pedal such that its end is directed upward and its end is directed toward the ground in an extended state,
The support further comprises a cam lock unit for up-down rotation of the stand leg,
Wherein the cam lock unit includes a cam rotating together with the stand leg, a follower contacting the cam, and an elastic member pressing the follow to the cam side.

3. The method of claim 2,
At least two opposing sides of the four sides of the cam form a locking surface and an unlocking surface, respectively, to fix the folded position or the unfolded position of the stand leg, respectively, and a cam surface Thereby guiding the rotation of the stand leg.

The method of claim 3,
Wherein the cam surface is provided in an arc shape.

The method of claim 3,
Wherein the cam forms a stopper surface on the other surface between the locking surface and the unlocking surface.

6. The method according to any one of claims 2 to 5,
The middle frame provided with the pedal further includes a cylindrical generator,
Wherein the stand leg is provided with a banding corresponding to an external shape of the generator.

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