KR20160093252A - Accelerating device for a bicycle which can enhance the travelling speed - Google Patents

Accelerating device for a bicycle which can enhance the travelling speed Download PDF

Info

Publication number
KR20160093252A
KR20160093252A KR1020150014014A KR20150014014A KR20160093252A KR 20160093252 A KR20160093252 A KR 20160093252A KR 1020150014014 A KR1020150014014 A KR 1020150014014A KR 20150014014 A KR20150014014 A KR 20150014014A KR 20160093252 A KR20160093252 A KR 20160093252A
Authority
KR
South Korea
Prior art keywords
gear
latch
ring gear
bicycle
transmission
Prior art date
Application number
KR1020150014014A
Other languages
Korean (ko)
Inventor
박정균
서달원
Original Assignee
(주) 에프엑스기어
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주) 에프엑스기어 filed Critical (주) 에프엑스기어
Priority to KR1020150014014A priority Critical patent/KR20160093252A/en
Publication of KR20160093252A publication Critical patent/KR20160093252A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
    • B62M11/16—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the ground-wheel hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/30—Chain-wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/13—Bicycles; Tricycles

Abstract

Disclosed is an accelerating device for a bicycle capable of increasing the rotating force of a driving wheel of the bicycle by enhancing the supporting force of gearshift, increasing coupling between the components, and minimizing energy loss due to friction between components by having an accelerating device formed in a sprocket of a bicycle, cogs of a gearshift assembly integrally mounted in a gearshift body, and a bearing installed between a ring gear and the gearshift body. The ring gear of the accelerating device is formed in multiple stages to correspond to the shape of the gear shift body. A plurality of latch protrusions are formed on a radial inner surface of a gearshift cover and are connected to be directed in one direction in a cogwheel manner. A first gear tooth is formed on one inner circumferential surface of the ring gear. A plurality of planet gears are disposed on the first gear tooth to be engaged and to be rotated along an inner circumference of the ring gear. A sun gear is disposed in the center of the planet gears to be engaged. A plurality of latch insertion grooves are formed on an outer circumferential surface of a gear carrier disposed and accommodated in the gearshift cover. A latch and a latch spring are disposed in the latch insertion groove. The latch is disposed to be selectively caught by the latch protrusions of the gearshift cover. The chain gears are disposed on an outer circumferential surface of the gearshift body to be integrated with the gearshift body. A third bearing is mounted on an outer circumferential surface of the ring gear accommodated and coupled to the gear shift body to be rolled.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an accelerating device for a bicycle,

The present invention relates to an acceleration device for improving the traveling speed of a bicycle, and more particularly, to an acceleration device for a bicycle which is provided with an acceleration device inside a sprocket of a bicycle, wherein the nose of the transmission assembly is integrally mounted on the transmission body, It is possible to enhance the supporting force of the transmission and increase the coupling force between the components and minimize the energy loss due to the friction between the components, thereby improving the rotation power of the bicycle drive wheels and accelerating the bicycle ≪ / RTI >

Generally, a bicycle is a basic type of driving principle in which a person treads his / her foot force to a rear wheel through a pedal, a crank mechanism, and a chain. BACKGROUND ART [0002] In recent years, a bicycle has been generalized in which a speed ratio is changed according to a running speed and a state to enable a more efficient running.

The structure for changing the transmission includes a sprocket formed on one side of a crankshaft on which a pedal is installed and a sprocket formed on the side of a driving wheel which is a rear wheel, To change the position of the chain which is a power transmission medium.

As an example of the transmission as described above, there is an acceleration device for a bicycle for improving the traveling speed of Korean Registered Utility Model No. 20-0453246 (registered on Apr. 08, 2011), which was previously registered by the present applicant.

Fig. 4 shows the overall configuration of the acceleration device for a bicycle disclosed in the above-mentioned registration utility model. 4, the conventional accelerator 100 has a sun gear 101 integrally provided on the center line of the hub shaft 12 on which the driving wheels of the bicycle are installed, and the sun gear 101 is integrally provided on one side of the gear cover 106 And a planetary gear 103 to be engaged with the sun gear 101 are rotatably installed individually from a fixed shaft 104 formed integrally. A gear housing 108 is installed in such a manner as to receive one side of the hub bush 102 while passing through the hub shaft 12. A ring gear 107 is provided on the radially inner surface of the gear housing 108 so that the planetary gear 103 is internally fitted.

The bicycle acceleration device thus constructed is applied to a general bicycle traveling through a chain using only a gear on the pedal side and a chain wheel on the driving wheel side or a small bicycle having a relatively small diameter wheel, It is possible to provide the user with the satisfaction of the speed. In other words, as the speed is increased more than twice as much as the same force required to make the pedal rotate one time, the bicycle user can conveniently carry the pedal lightly.

On the other hand, a bicycle acceleration device is disclosed in Korean Patent No. 10-1089683 (registered on November 29, 2011), which is an improvement of the present applicant.

FIG. 5 shows a core configuration of the acceleration device for a bicycle disclosed in the above patent. 5, a large number of latching openings 231 are formed around the inner circumference of the transmission cover 230, bearing insertion grooves 232 are formed around the central openings, and the latching openings 231, And a plurality of bearing balls 112 are seated between the bearing insertion grooves 232 and the planetary gear carrier insertion grooves 233 . A latch insertion groove 215 for receiving a plurality of latches 211 is formed on the radially outer surface of the planetary gear carrier 210 inserted into the planetary gear carrier insertion groove 233. The latch 211 formed on the outer circumferential edge of the planetary gear carrier 210 to which the sun gear 101 and the planetary gear 103 are rotatably mounted is elastically supported on the planetary gear carrier 210 by the latch spring 220 The latch 211 inserted into the latching hole 231 of the transmission cover 230 to rotate the pedal of the bicycle when the user rotates the latch 211. In this case, So that it can be smoothly traveled.

However, in the bicycle acceleration device having such a structure, a plurality of cogs are individually mounted on the transmission body 111, so that the structure is complicated and the stability of operation is poor, and there is a problem of energy loss due to friction between component parts.

Korean Registered Utility Model No. 20-0453246 (Registration date: April 08, 2011) Korean Registered Patent No. 10-1089683 (Registered Date: November 29, 2011)

SUMMARY OF THE INVENTION In order to improve the running speed of a bicycle, an acceleration device is installed inside a sprocket of a bicycle, and the nose of the transmission assembly is integrally mounted on the transmission body, and a bearing is provided between the ring gear and the transmission body And to provide an acceleration device for a bicycle which is capable of enhancing the supporting force of the transmission and increasing the coupling force between the components and minimizing the energy loss due to friction between the components.

In order to solve the above-mentioned technical problems, the present invention provides a transmission comprising: a transmission body fastened to and fixed to a male threaded portion of a hub shaft provided with a drive wheel of a bicycle and formed in a multi- A bicycle accelerator comprising a ring gear, a sun gear, a plurality of planetary gears, and a transmission cover coupled to the outside of the transmission body,

The ring gear is formed in a multi-tiered shape conforming to the shape of the transmission body so as to be seated in the transmission body, and a plurality of latching tabs are formed on the radially inner surface of the transmission cover so as to be connected to each other so as to be gear- , A first gear tooth form is formed on one inner peripheral surface of the ring gear having a relatively large diameter, and a plurality of planetary gears are arranged to engage with the radial inner diameter of the ring gear in the first gear tooth form, A plurality of latch insertion grooves are formed on a radially outer surface of a gear carrier accommodated and disposed in the transmission cover, a latch and a latch spring are disposed in the latch insertion groove, And to selectively engage the latch latches of the transmission cover And a plurality of chain gears are integrally formed with the transmission body on the radially outer surface of the transmission body.

A stopper coupling portion is formed on one radial outer surface of the ring gear having a relatively small diameter, and a ring stopper is engaged with the stopper coupling portion to be fastened.

A recess is defined by a cover projection protruding radially from one side of the transmission body, and the second bearing and the bearing ball are received together in the recess.

A bearing needle is disposed in each of the planetary gears, and a planetary gear rotation shaft protruding from one side of the gear carrier is inserted into the bearing needles.

And a third bearing is rotatably mounted on the radially outer surface of the ring gear which is received in the transmission body.

As described above, according to the present invention, an acceleration device is installed inside a sprocket of a bicycle, the nose of the transmission assembly is integrally mounted on the transmission body, and a bearing is provided between the ring gear and the transmission body to enhance the supporting force of the transmission gear. Thereby increasing the coupling force between the components and minimizing the energy loss due to the friction between the components. Thus, the rotational force of the bicycle drive wheels can be improved.

1 is an exploded perspective view of a bicycle acceleration device according to a preferred embodiment of the present invention;
FIG. 2 is an assembled state of the acceleration device for bicycle shown in FIG. 1; FIG.
3 is a cross-sectional view along line AA of FIG. 2;
4 and 5 show a bicycle acceleration device according to the prior art.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a bicycle acceleration device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show a bicycle acceleration device 300 according to a preferred embodiment of the present invention.

1 to 3, a bicycle acceleration device 300 according to an embodiment of the present invention is fastened and fixed to a male screw portion 302 of a hub shaft 301 on which a driving wheel of a bicycle is installed, A ring gear 320 accommodated in the transmission body 310, a sun gear 330, a plurality of planet gears 340, and a ring gear 340 disposed on one side of the transmission body 310 And a transmission cover 350 coupled to the outside.

The ring gear 320 is formed in a multistage shape in conformity with the shape of the transmission body 310 so as to be seated inside the transmission body 310. On one side of the ring gear 320, that is, on one radial outer surface of a relatively small diameter, The stopper fastening portion 321 is formed. A ring stopper 380 is engaged with the stopper fastening portion 321 and fastened. A first gear tooth 322 is formed on the other inner peripheral surface of the ring gear 320 having a relatively large diameter.

A first bearing 325, a sun gear 330, and a planetary gear 340 are disposed in the ring gear 320. A plurality of planetary gears 340 are disposed in engagement with the first gear teeth 322 in the ring gear 320 such that the planetary gears 340 revolve along the radial inner diameter of the ring gear 320, And the sun gear 330 is disposed at the center thereof. The first bearing 325 is rotatably mounted on the radially outer surface of the sun gear 330.

A first female threaded portion 335 is formed on the radial inner diameter of the sun gear 330 so as to be fastened to the male threaded portion 302 of the hub shaft 301 in a threaded manner. A plurality of planetary gears 340 are arranged to engage with the second gear teeth 332 formed on the radially outer surface of the sun gear 330. A bearing needle 341 is disposed in the interior of the planetary gear 340 and a planetary gear rotation shaft 361 protruding from one side of the gear carrier 360 is inserted into the bearing needle 341.

The gear carrier 360 is accommodated in a recess (not shown) defined by a cover projection 352 formed radially from one side of the transmission cover 350 and includes a second bearing 362, And a bearing ball 364 are accommodated together. At this time, a plurality of latch insertion grooves 366 are formed on the radially outer surface of the gear carrier 360. A latch 370 and a latch spring 372 are disposed in the latch insertion groove 366, respectively. The latch 370 is inserted and arranged in such a manner that the latch 370 is fixedly held by the latch spring 372 in the latch insertion groove 366. In correspondence with this, wedge-shaped latching hooks 354 are formed around the inner periphery of the transmission cover 350 so as to be connected to each other so as to face in one direction.

On the other hand, a third bearing 326 is rotatably mounted on the radially outer surface of the ring gear 320 received in the transmission body 310. A plurality of chain gears C having different diameters are arranged on the radially outer surface of the transmission body 310 so as to be integral with the transmission body 310. The chain gears (C) are configured to be capable of shifting from the gears of the drive chain in accordance with gear shifts as selective engagement of the chain.

The operation of the acceleration device 300 for bicycle according to the preferred embodiment of the present invention constructed as described above will be briefly described below.

The latch 370 is elastically supported by the latch spring 372 on the radially outer surface of the gear carrier 360 on which the sun gear 330 and the planetary gear 340 are rotatably mounted. Therefore, when the bicycle driver turns the pedal of the bicycle, the latch 370 is hung by the latching hole 354 formed on the radially inner surface of the transmission cover 350, so that the bicycle is inflated so as not to be deviated radially outward, .

In other words, the latching hole 354 formed in one direction on the radially inner surface of the transmission cover 350 is formed to be high in the traveling direction and low in the reverse traveling direction, so that the latch 370 is elastically So that the ring gear 320 can be smoothly rotated in the forward direction, and the vehicle can be driven rapidly at a speed of 2.8 to 3 times.

In contrast, when the user turns the pedal of the bicycle in the opposite direction, the latch 370 is released outward by the latch spring 372 and is firmly engaged with the latching hole 354, . Thereby, the ring gear 320 can be freely rotated in the forward or reverse direction, and even if the pedal is rotated in the forward direction or the reverse direction, the ring gear 320 can be smoothly rotated without any hitching or impact.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

300: Bicycle accelerator 301: Hub axis
310: transmission body 320: ring gear
321: Stopper fastening portion 322, 332: Gear tooth type
325, 326, 364: Bearing 330:
340: planetary gear 350: transmission cover
352: cover protrusion 354: latch latch
360: gear carrier 364: bearing ball
370: latch 372: latch spring
380: Ring stopper C: Chain gear

Claims (5)

A transmission body 310 that is fastened to and fixed to a male screw portion 302 of a hub shaft 301 on which a driving wheel of a bicycle is installed and formed in a multi- And a transmission cover (350) coupled to the outside of the transmission body (310), wherein the transmission cover body (320), the sun gear (330)
The ring gear 320 is formed in a multistage shape conforming to the shape of the transmission body 310 so as to be seated in the transmission body 310. The ring gear 320 is formed on the radially inner surface of the transmission cover 350 with a plurality of latching fasteners 354 The first gear teeth 322 are formed on one inner circumferential surface of the ring gear 320 having a relatively large diameter. The first gear teeth 322 are formed on the inner circumferential surface of the ring gear 320, A plurality of planetary gears 340 are arranged to engage to revolve along the radial inner diameter of the ring gear 320 while the sun gear 330 is disposed at the center of the planetary gears 340, A plurality of latch insertion grooves 366 are formed on the radially outer surface of the gear carrier 360 accommodated in the cover 350. A latch 370 and a latch spring 372 are disposed in the latch insertion groove 366 The latch 37 And a plurality of chain gears C are arranged on the radially outer surface of the transmission body 310 so as to be rotatably supported by the transmission body 310 and the transmission case 350. [ Wherein the acceleration device is configured to be integrally formed. The ring gear according to claim 1, wherein a stopper coupling part (321) is formed on one radial outer surface of the ring gear (320) having a relatively small diameter, and a ring stopper (380) is engaged with the stopper coupling part Accelerators for bicycles featured. 3. The transmission according to claim 1 or 2, wherein a recess is defined by a cover projection (352) formed radially projecting from one side of the transmission body (310), the recess being provided with a second bearing (362) Characterized in that a ball (364) is received together. The planetary gear set according to claim 1 or 2, wherein a bearing needle (341) is disposed inside the planetary gear (340), and the bearing needle (341) And a gear rotating shaft (361) is inserted. 3. A bicycle acceleration device according to any one of claims 1 to 3, characterized in that a third bearing (326) is rotatably mounted on the radially outer surface of the ring gear (320) received in the transmission body (310) .
KR1020150014014A 2015-01-29 2015-01-29 Accelerating device for a bicycle which can enhance the travelling speed KR20160093252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150014014A KR20160093252A (en) 2015-01-29 2015-01-29 Accelerating device for a bicycle which can enhance the travelling speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150014014A KR20160093252A (en) 2015-01-29 2015-01-29 Accelerating device for a bicycle which can enhance the travelling speed

Publications (1)

Publication Number Publication Date
KR20160093252A true KR20160093252A (en) 2016-08-08

Family

ID=56711743

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150014014A KR20160093252A (en) 2015-01-29 2015-01-29 Accelerating device for a bicycle which can enhance the travelling speed

Country Status (1)

Country Link
KR (1) KR20160093252A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102251943B1 (en) * 2020-04-29 2021-05-14 서달원 Crank variable speed gear apparatus for increasing a rotational force

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200453246Y1 (en) 2009-07-16 2011-04-20 주식회사 솔텍 Accelerator for bicycle for driving speed elevation
KR101089683B1 (en) 2011-09-19 2011-12-05 주식회사 솔텍 The bicycle an accelerator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200453246Y1 (en) 2009-07-16 2011-04-20 주식회사 솔텍 Accelerator for bicycle for driving speed elevation
KR101089683B1 (en) 2011-09-19 2011-12-05 주식회사 솔텍 The bicycle an accelerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102251943B1 (en) * 2020-04-29 2021-05-14 서달원 Crank variable speed gear apparatus for increasing a rotational force

Similar Documents

Publication Publication Date Title
KR101089683B1 (en) The bicycle an accelerator
JP5716252B2 (en) Power transmission device for chainless bicycles
JP5977895B2 (en) Multi-speed transmission with built-in hub
KR101357220B1 (en) Multi speed transmission
EP3131184A1 (en) Electric bicycle wheel hub motor device
WO2010114689A1 (en) High efficiency bicycle hub
US20070046096A1 (en) Powered spinning hubcap
US8475327B2 (en) Accelerating system for improving the running speed of a bicycle
KR101749896B1 (en) Acceleration and retardation gearing systems
KR102084081B1 (en) Motor with transmission for bicycle
JP4824741B2 (en) Internal gear shifting hub for bicycles
KR100241038B1 (en) Automatic transmission for a bicycle
KR20160093252A (en) Accelerating device for a bicycle which can enhance the travelling speed
KR101932162B1 (en) Crank assembly for increasing a rotational force
US20220024540A1 (en) Crank variable-speed gear device for increasing rotational power
KR101889751B1 (en) Gearing system for increasing a rotational force
KR101160632B1 (en) The bicycle an transmission
KR200441208Y1 (en) Automatic transmission for bicycle
CN218258573U (en) Front speed variator of bicycle
CN103863515B (en) For the transmission device of wheel
CN217994710U (en) Crank device of bicycle
KR20160011325A (en) Automatic transmission for electric motorcycles
KR101895449B1 (en) Crank assembly for increasing a rotational force
KR20190109649A (en) bicycle accelerator power driving device
KR100237978B1 (en) Transmission gear fix structure

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment