WO2014010976A1 - Transmission for bicycle - Google Patents

Transmission for bicycle Download PDF

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Publication number
WO2014010976A1
WO2014010976A1 PCT/KR2013/006226 KR2013006226W WO2014010976A1 WO 2014010976 A1 WO2014010976 A1 WO 2014010976A1 KR 2013006226 W KR2013006226 W KR 2013006226W WO 2014010976 A1 WO2014010976 A1 WO 2014010976A1
Authority
WO
WIPO (PCT)
Prior art keywords
latch
unit
interference
sprocket support
blocking member
Prior art date
Application number
PCT/KR2013/006226
Other languages
French (fr)
Korean (ko)
Inventor
이상옥
김병일
Original Assignee
Lee Sang Ok
Kim Byeongil
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 Lee Sang Ok, Kim Byeongil filed Critical Lee Sang Ok
Publication of WO2014010976A1 publication Critical patent/WO2014010976A1/en

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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
    • 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
    • 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
    • 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
    • B62M9/14—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 the wheels being laterally shiftable
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/24—Freewheels or freewheel clutches specially adapted for cycles
    • F16D41/30—Freewheels or freewheel clutches specially adapted for cycles with hinged pawl co-operating with teeth, cogs, or the like

Definitions

  • the present invention relates to a bicycle transmission, and more particularly, to a bicycle transmission that can be shifted even in a stationary state.
  • the gear transmission of the bicycle is installed to be able to step on the pedal at a constant force and speed according to the driving state, it consists of a method of overlapping the sprocket (sprocket) having a different number of teeth on the pedal and the rear wheel shaft.
  • the gear transmissions of these bicycles have the chain chain on the hill, the pedal shaft on the small sprocket, the rear wheel shaft on the large sprocket, and when the speed is flat on the flat, the bicycle chain on the pedal shaft on the large sprocket and the rear wheel shaft on the small sprocket.
  • By pressing the pedal at a constant force and speed to keep the progress of the bike is disclosed in the prior document (registered utility model No. 20-0274726, automatic transmission for bicycles).
  • the gear transmission as described above can be adjusted only when the bicycle is running, it is impossible to adjust the transmission when the wheel is stopped.
  • the present invention was conceived in view of the above, and an object thereof is to provide a bicycle transmission apparatus having an improved structure to allow a gear shift even in a stationary state.
  • the sprocket support unit rotatably supported on the hub shaft unit to which the wheel of the bike is coupled, the plurality of sprockets are supported on the outside;
  • a latch unit installed between the hub shaft unit and the sprocket support unit to allow rotation of the sprocket support unit in one direction and to suppress rotation in the other direction;
  • a latch control unit for selectively controlling the latch unit to enable free rotation of the sprocket support unit with respect to the hub shaft unit in the other direction so that gear shifting is possible in a stopped state. do.
  • the latch unit may include a latch movably installed at an outer circumferential side of the hub shaft unit; An elastic member for elastically supporting the latch so as to protrude outwardly; And a latch interference part disposed on an inner circumference of the sprocket support unit so as to face the latch and having a latch catching hole for engaging the latch when the sprocket support unit rotates in the other direction.
  • the latch unit may further include a latch support cap coupled to an end of the hub shaft unit to prevent the sprocket support unit from being separated from the hub shaft unit and supporting the latch at an outer circumference thereof.
  • the latch control unit is installed so as to be located between the latch interference portion and the latch or out, and when interposed between the latch interference portion and the latch and the interference part blocking member to separate the latch from the interference portion; ;
  • a position control unit connected to the interference blocking member and selectively moving the interference blocking member during operation, wherein the latch is located when the interference blocking member is positioned between the latch and the latch interference blocking member.
  • the sprocket support unit may be freely rotated in the other direction by sliding in the state of being located at the inner circumference of the interference blocking member.
  • the position controller may further include an elastic member configured to elastically support the interference blocking member to enter between the latch and the latch interference part; And an operation wire which is connected to the interference blocking member and causes the interference blocking member to overcome the elastic force of the elastic member and to be separated between the latch and the latching interference part when a pulling force is applied.
  • the interference blocking member is installed on the support shaft is installed in the center of the hub shaft unit, the blocking member body to which the operation wire is connected; It is preferably formed to protrude in a cylindrical shape on one surface of the blocking member body, the blocking portion to enter between the latch interference portion and the latch to block the latch and the latch interference portion.
  • the latch interference portion is preferably formed integrally on the inner circumference of the sprocket support unit.
  • the sprocket support unit which is rotatably supported by a support bearing on the outside of the hub shaft unit, a plurality of sprockets are fitted to the outer periphery;
  • a release preventing cap which is fastened to an end of the sprocket support housing and prevents detachment of the sprocket coupled to the sprocket support housing, wherein the latch interference part is installed at the release preventing cap.
  • the latch is preferably formed with a guide surface formed inclined upwardly from the end toward the inner side from the outside of the latch support cap.
  • the end portion of the interference part blocking member that is in contact with the latch is formed to be inclined toward the inner side is preferably a tapered portion formed to face the guide surface of the latch.
  • the bicycle transmission device of the present invention not only can the gear shifting while driving, but also the gear shifting in the stationary state.
  • the gear shift can be easily performed even in a state of driving at a low speed, such as when driving on a flat road and driving uphill suddenly, so that the bicycle can be used more conveniently.
  • FIG. 1 is an exploded perspective view showing a shift of the bicycle according to an embodiment of the present invention.
  • FIG. 2A is a cross-sectional view of the transmission of the bicycle shown in FIG.
  • FIG. 2B is a perspective view of the latch unit illustrated in FIG. 1.
  • FIG. 3 is a front view showing the transmission of the bicycle in the state of Figure 2a.
  • FIG. 4 is a cross-sectional view showing the main portion of Figure 2b.
  • FIG. 5 is a view illustrating a state in which the interference blocking member enters between the latch and the latch interference unit in the state of FIG. 4.
  • 6 and 7 are diagrams for explaining a state in which gear shift is possible in the stationary state.
  • FIG. 8 is a view for explaining a transmission device of a bicycle according to another embodiment of the present invention.
  • the bicycle transmission apparatus 10 is rotatably supported by a hub shaft unit 20 to which wheels of a bicycle are coupled, and a plurality of sprockets 30 on the outside thereof. And a latch unit 50 and a latch control unit 60 installed between the sprocket support unit 40, the hub shaft unit 20, and the sprocket support unit 40.
  • the hub shaft unit 20 includes a hub shaft body 21 and a bearing support member 23 coupled to one end of the hub shaft body 21.
  • the hub shaft body 21 has a hollow shaft 21a and a flange portion 21a which is spaced apart from each other on the hollow shaft 21a.
  • One end of the hollow shaft 21a is formed with a screw line to fasten the bearing support member 23.
  • the bearing support member 23 has a cylindrical shape, and a support bearing 70 is installed at an outer circumference thereof, and a screw thread screwed to the hollow shaft 21a is formed at one inner circumferential surface thereof, and a latch to be described later on the outer circumference of the other end thereof.
  • a screw engaging portion 23a having a screw line is formed so that the support cap 51 can be screwed.
  • the bearing support member 23 may be integrally formed with the hollow shaft body 21, or may be manufactured and combined as a separate component.
  • a support bearing 70 is installed between the sprocket support unit 40 and the bearing support member 23 of the hub shaft unit 20.
  • the sprocket support unit 40 is separated from the sprocket support housing 41 in which a plurality of sprockets 30 are inserted and supported on the outer circumference and the sprocket 30 coupled to an end of the sprocket support housing 41 to prevent the sprocket 30 from being separated.
  • the prevention cap 43 is provided. On the outer circumference of the sprocket support housing 41, the locking jaw is formed in a predetermined pattern to prevent free rotation of the sprocket 30 coupled thereto.
  • the separation prevention cap 43 has a ring shape that is screwed to the end of the sprocket support housing 41, and is installed to protrude to the outer circumference of the sprocket support housing 41.
  • a latch interferer 57 which will be described later, is installed on an inner circumference of the sprocket support unit 40, that is, an inner circumference of the sprocket support housing 41, and a latch 53 to be described later. Latch interference hole 57a is formed.
  • Sprocket support unit 40 having the above configuration can be freely rotated in one direction (A (opposite direction of the bicycle wheel driving direction), free rotation in the other direction (B: bicycle wheel driving direction) is latch unit 50 Is optionally limited.
  • the latch unit 50 allows rotation of the sprocket support unit 40 in one direction A and selectively restricts rotation in the other direction B.
  • the latch unit 50 includes a latch support cap 51 coupled to an outer circumference of the end of the bearing support member 23 of the hub shaft unit 20, and a latch movably installed outside the latch support cap 51. 53, an elastic member 55 for elastically supporting so as to protrude outward in the pressed state of the latch 53, and a latch interference portion 57.
  • the latch support cap 51 is screwed to one end of the bearing support member 23, thereby preventing the sprocket support unit 40 and the support bearing 70 from being separated from the hub shaft unit 20.
  • a latch seating groove 51b on which the latch 53 is seated is formed to be pulled out from the outer circumference.
  • an outer circumference of the cap body 51a is formed with an annular groove 51c in which the elastic member 55 is supported in the circumferential direction.
  • the latch 53 is installed to be received in the latch seating groove 51b formed on the outer circumference of the latch support cap 51, and is installed to rotate at a predetermined angle within the latch seating groove 51b, and the attitude of the latch interferer is changed. It can be moved to engage or escape the latch latch (57a) formed in the (57). That is, the latch 53 is caught in the latch latch 57a in the posture (FIGS. 2A to 4) protruding from the outer circumference of the latch support cap 51, so that the sprocket support unit 40 does not freely rotate in one direction A.
  • the sprocket support unit 40 is not caught by the latch 53 and freely restrained to be rotated together with the hub shaft unit 20, while being elastically pressed in the other direction (B) by interfering with the latch latch 57a. Allow it to rotate.
  • the latch 53 is elastically supported by the elastic member 55, and is elastically supported in a direction in close contact with the latch latch 57a.
  • the elastic member 55 includes an elastic ring for supporting the latch 53 in a state of being fitted into the annular groove 51c of the support cap 51, and the elastic member 55 is inserted into a central portion of the latch 53. Supported slots 55a are formed.
  • the latch interference portion 57 is installed on the inner circumference of the sprocket support unit 40 corresponding to the outer circumference of the latch support cap 51, and the latch interference hole 57a at which the end of the latch 53 is caught is fixed in the circumferential direction. Formed at intervals.
  • the latch interference portion 57 has a ring shape, may be installed on the inner circumference of the sprocket support unit 40, and preferably may be integrally formed on the inner circumference of the sprocket support unit 40.
  • the latch 53 preferably has a guide surface 53a formed at an end thereof inclined upward from the outside of the latch support cap 51 toward the inside thereof.
  • the inner circumference of the sprocket support housing 41 that is, the gap between the latch interference portion 57 and the latch 53, is formed gradually closer to the inside of the sprocket support housing 41, and the distance becomes farther toward the outside. Therefore, the interference part blocking member 61 of the latch control unit 60 to be described later can be easily inserted between the latch interference part 57 and the latch 53.
  • the latch control unit 60 selectively controls the latch unit 50 to allow free rotation of the sprocket support unit 40 with respect to the hub shaft unit 20 also in the other direction B. This is to allow gear shifting at.
  • the latch control unit 60 includes an interference part blocking member 61 and a position controller 63 for controlling the position of the interference part blocking member 61.
  • the interference blocking member 61 has a blocking member body 61a movably coupled to the support shaft 1 and a blocking portion 61b protruding in a cylindrical shape from one surface of the blocking member body 61a.
  • the support shaft (1) is coupled to the center of the hub shaft unit 20 is a shaft to which the hub shaft unit 20 is relatively rotatably coupled, such as a bicycle frame can be coupled, the blocking member body (61a) ) May also be slidably installed in the axial direction.
  • the blocking portion 61b moves in the direction of arrow C in a state as shown in FIGS. 2A and 4, that is, positioned outside the latch 53 and the latch interference portion 57, and is located outside.
  • the latch 53 when moved to be positioned between the latch 53 and the latch interference portion 57, the latch 53 is prevented from contacting the latch interference portion 57, and the latch 53 is disposed on the inner circumferential surface of the blocking portion 61b. Be in touch.
  • the sprocket support housing 41 becomes freely rotatable in each of the A and B directions, and thus stops. In this state, the gear can be rotated in the B direction, thereby enabling a gear shift.
  • the tapered portion 61c is preferably formed such that the end portion of the blocking portion 61b is inclined toward the inner diameter, and the blocking portion 61b is contacted with the guide surface 53a of the latch 53. It allows natural entry between the latch 53 and the latch interferer 57 without interfering with the latch 53. That is, as the blocking portion 61b enters between the latch 53 and the latch interference portion 57, the latch 53 is pressed against the inner circumferential surface of the blocking portion 61b so that the blocking portion 61b is naturally spaced apart from the latch interference portion 57. (61b) the inner circumference.
  • the position control unit 63 is for controlling the position of the interference blocking member 61, as an example, a wire holder connected to the operation wire 64 and the operation wire 64 is connected to the interference blocking member 61 ( 65).
  • the wire holder 65 may be fixed to the support shaft 1 or fixed to the bicycle frame.
  • the wire holder 65 may be connected to the interference blocking member 61 while the operation wire 64 is supported.
  • operation wire 64 is connected to an operation lever (not shown) connected to the handle of the bicycle, and the interference part blocking member 61 by allowing the operation wire 64 to be pulled or returned as the bicycle driver operates the operation lever. ) Can be controlled.
  • an elastic member 66 may be further installed between the wire holder 65 and the interference blocking member 61.
  • the elastic member 66 provides an elastic force in the direction in which the interference blocking member 61 enters between the latch interference portion 57 and the latch 53, so that a tensile force (pulling force) is applied to the operation wire 64.
  • the interference blocking member 61 may be moved to a position as shown in FIGS. 5 and 6 by the elastic force of the elastic member 66.
  • the driver pulls the operation wire 64 by operating the operating lever on the handle side the elastic force of the elastic member 66 is overcome, and the interference blocking member 61 is interposed between the latch interference portion 57 and the latch 53. It can be exited and moved to a position as shown in FIG. 4.
  • the configuration of the position control unit 63 may include an operation lever installed on a bicycle handle, and the like.
  • the configuration of the wire operation unit, the operation wire 64, the wire holder 65, and the like is a gear shifting widely applied to a bicycle. Since it can be easily applied from the structure of the lever and the wire or the configuration of the brake lever and the wire further description will be omitted.
  • the position control unit 63 installs a permanent magnet on the interference blocking member 61, and corresponds to the permanent magnet, that is, on the wire holder 65.
  • an interference part blocking member 61 in which the permanent magnet is installed is moved into and out of the latch interference part 57 and the latch 53 while being moved. This can be done.
  • FIGS. 2A, 2B, 3, and 4 show driving states, and in this state, the latch 53 operates normally, so that the sprocket support unit 40 has a hub shaft in one direction (A). It is relatively freely rotatable with respect to the unit 20, and is constrained by the latch 53 so as to rotate integrally with the hub shaft unit 20 in the other direction (B). Therefore, in this state, it is possible to shift the chain by shifting the chain using the gear transmission during driving, and when the pedal is pressed, the power is transmitted to the hub shaft unit 20 through the sprocket support unit 40. You can rotate the bicycle wheels.
  • the position control unit 63 is controlled to move the interference blocking unit 61 back to the initial position (the position of FIGS. 2A to 4), and the blocking unit 61b is connected to the latch 53. It exits between the latch interference parts 57, and the latch 53 comes into contact with the latch interference parts 57 again, and interferes.
  • the sprocket support unit 40 is in a state in which free rotation in the other direction B is impossible again.
  • the latch interference portion 57 ′ in which the latch 53 is selectively restrained, the separation preventing cap of the sprocket support unit 40 It may be formed integrally with 43 '.
  • the release preventing cap 43 ' is screwed to the outer circumferential surface or the inner circumferential surface of the end of the sprocket support housing 41, may have a structure formed to cover each of the outer circumferential surface and the inner circumferential surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
  • Gears, Cams (AREA)

Abstract

Disclosed is a transmission for a bicycle, comprising: a sprocket support unit which is rotationally supported on a hub spindle unit to which the wheels of the bicycle are coupled, and which has a plurality of sprockets supported on the outside thereof; a latch unit which is provided between the hub spindle unit and the sprocket support unit such that the latch unit allows the sprocket support unit to rotate in one direction while restraining the rotation in the opposite direction; a latch control unit which selectively controls the latch unit such that the sprocket support unit can freely rotate with respect to the hub spindle unit in the opposite direction so as to enable the gears to be shifted while in a stopped state.

Description

자전거 변속장치Bicycle transmission
본 발명은 자전거 변속장치에 관한 것으로서, 보다 상세하게는 정지 상태에서도 변속이 가능한 자전거 변속장치에 관한 것이다.The present invention relates to a bicycle transmission, and more particularly, to a bicycle transmission that can be shifted even in a stationary state.
일반적으로 자전거의 기어 변속기는 주행상태에 따라 페달을 일정한 힘과 속도로 밟을 수 있도록 하기 위하여 설치되는데, 페달과 뒷바퀴 축에 서로 다른 톱니 수를 갖는 스프로킷(sprocket)을 중첩배치하는 방식으로 이루어져 있다.In general, the gear transmission of the bicycle is installed to be able to step on the pedal at a constant force and speed according to the driving state, it consists of a method of overlapping the sprocket (sprocket) having a different number of teeth on the pedal and the rear wheel shaft.
이러한 자전거의 기어 변속기는 언덕에서는 자전거 체인을 페달 축은 작은 스프로킷에, 뒷바퀴 축은 큰 스프로킷에 걸리도록 하고, 평지에서 속도가 빨라지는 경우에는 자전거 체인을 페달 축은 큰 스프로킷에, 뒷바퀴 축은 작은 스프로킷에 걸리도록 하여 페달을 일정한 힘과 속도로 밟아도 자전거의 진행상태를 유지할 수 있도록 하는 것이다. 종래기술의 일예가 선행문헌(등록 실용신안 제20-0274726호, 자전거용 자동변속장치)에 개시되어 있다.The gear transmissions of these bicycles have the chain chain on the hill, the pedal shaft on the small sprocket, the rear wheel shaft on the large sprocket, and when the speed is flat on the flat, the bicycle chain on the pedal shaft on the large sprocket and the rear wheel shaft on the small sprocket. By pressing the pedal at a constant force and speed to keep the progress of the bike. One example of the prior art is disclosed in the prior document (registered utility model No. 20-0274726, automatic transmission for bicycles).
그런데 상기와 같은 기어 변속기는 자전거의 주행시에만 조절을 할 수 있으며, 바퀴가 정지된 상태에서는 변속기의 조절이 불가능하게 된다.By the way, the gear transmission as described above can be adjusted only when the bicycle is running, it is impossible to adjust the transmission when the wheel is stopped.
따라서 종래에는 정지된 상태에서 기어 변속을 하기 위해서는, 자전거의 뒷바퀴를 지면으로부터 이격시켜 놓은 상태에서 변속을 해야 하므로, 매우 번거롭고 사용이 불편한 문제점이 있었다.Therefore, in the related art, in order to shift gears in a stationary state, shifting is required in a state in which the rear wheel of the bicycle is spaced apart from the ground.
특히, 어린이 등의 청소년은 무거운 자전거를 지면에서 이격되도록 한 손으로 자전거 뒷바퀴를 든 상태에서 변속작업을 하는 것이 어렵기 때문에, 실질적으로 정지 상태에서의 기어 변속을 하지 못하는 문제점이 있다.In particular, adolescents, such as children, it is difficult to shift gears while holding the rear wheel with one hand so that heavy bicycles are separated from the ground, and thus there is a problem in that the gears are not shifted in a substantially stopped state.
본 발명은 상기와 같은 점을 감안하여 창안된 것으로서, 정지 상태에서도 기어 변속이 가능하도록 구조가 개선된 자전거 변속장치를 제공하는데 그 목적이 있다.The present invention was conceived in view of the above, and an object thereof is to provide a bicycle transmission apparatus having an improved structure to allow a gear shift even in a stationary state.
상기 목적을 달성하기 위한 본 발명의 자전거 변속장치는, 자전거의 바퀴가 결합되는 허브축 유닛에 회전 가능하게 지지되며, 외측에 복수의 스프라켓이 지지되는 스프라켓 지지유닛; 상기 허브축 유닛과 상기 스프라켓 지지유닛 사이에 설치되어, 상기 스프라켓 지지유닛의 일방향으로의 회전을 허용하고, 타방향으로의 회전을 억제하는 래치 유닛과; 상기 래치 유닛을 선택적으로 제어하여, 상기 타방향으로도 상기 허브축 유닛에 대해 상기 스프라켓 지지유닛의 자유회전이 가능하도록 하여 정지 상태에서 기어 변속이 가능하도록 하는 래치 제어유닛;을 포함하는 것을 특징으로 한다.Bicycle transmission device of the present invention for achieving the above object, the sprocket support unit rotatably supported on the hub shaft unit to which the wheel of the bike is coupled, the plurality of sprockets are supported on the outside; A latch unit installed between the hub shaft unit and the sprocket support unit to allow rotation of the sprocket support unit in one direction and to suppress rotation in the other direction; And a latch control unit for selectively controlling the latch unit to enable free rotation of the sprocket support unit with respect to the hub shaft unit in the other direction so that gear shifting is possible in a stopped state. do.
여기서, 상기 래치 유닛은, 상기 허브축 유닛의 단부 외주측에 움직임 가능하게 설치되는 래치와; 상기 래치가 눌린 상태에서 외측으로 돌출되도록 탄성 지지하는 탄성부재; 및 상기 래치에 마주하도록 상기 스프라켓 지지유닛의 내주에 설치되며, 상기 스프라켓 지지유닛이 상기 타방향으로 회전시 상기 래치가 걸리도록 하는 래치 걸림구를 가지는 래치 간섭부;를 포함하는 것이 바람직하다.The latch unit may include a latch movably installed at an outer circumferential side of the hub shaft unit; An elastic member for elastically supporting the latch so as to protrude outwardly; And a latch interference part disposed on an inner circumference of the sprocket support unit so as to face the latch and having a latch catching hole for engaging the latch when the sprocket support unit rotates in the other direction.
또한, 상기 래치 유닛은, 상기 허브축 유닛의 단부에 결합되어 상기 스프라켓 지지유닛이 상기 허브축 유닛에서 이탈되는 것을 방지하며, 그 외주에서 상기 래치를 지지하는 래치 지지캡을 더 포함하는 것이 좋다.The latch unit may further include a latch support cap coupled to an end of the hub shaft unit to prevent the sprocket support unit from being separated from the hub shaft unit and supporting the latch at an outer circumference thereof.
또한, 상기 래치 제어유닛은, 상기 래치 간섭부와 상기 래치 사이에 위치되거나 벗어나도록 설치되며, 상기 래치 간섭부와 상기 래치 사이에 위치시 상기 래치가 상기 간섭부와 분리되도록 하는 간섭부 차단부재와; 상기 간섭부 차단부재에 연결되며, 동작시 상기 간섭부 차단부재를 선택적으로 이동시키는 위치 제어부;를 포함하며, 상기 간섭부 차단부재가 상기 래치와 상기 래치 간섭부 사이에 위치되면, 상기 래치가 상기 간섭부 차단부재 내주에 위치된 상태로 미끄럼 운동하여 상기 스프라켓 지지유닛이 상기 타방향으로 자유회전 가능한 것이 좋다.In addition, the latch control unit is installed so as to be located between the latch interference portion and the latch or out, and when interposed between the latch interference portion and the latch and the interference part blocking member to separate the latch from the interference portion; ; A position control unit connected to the interference blocking member and selectively moving the interference blocking member during operation, wherein the latch is located when the interference blocking member is positioned between the latch and the latch interference blocking member. The sprocket support unit may be freely rotated in the other direction by sliding in the state of being located at the inner circumference of the interference blocking member.
또한, 상기 위치 제어부는, 상기 간섭부 차단부재를 상기 래치와 래치 간섭부 사이로 진입되도록 탄력적으로 지지하는 탄성부재; 및 상기 간섭부 차단부재에 연결되며, 당기는 힘의 작용시 상기 간섭부 차단부재가 상기 탄성부재의 탄성력을 이기고 상기 래치와 래치 간섭부 사이에서 벗어나도록 하는 동작와이어;를 포함하는 것이 좋다.The position controller may further include an elastic member configured to elastically support the interference blocking member to enter between the latch and the latch interference part; And an operation wire which is connected to the interference blocking member and causes the interference blocking member to overcome the elastic force of the elastic member and to be separated between the latch and the latching interference part when a pulling force is applied.
또한, 상기 간섭부 차단부재는, 상기 허브축 유닛의 중심에 설치되는 지지축에 이동 가능하게 설치되며, 상기 동작 와이어가 연결되는 차단부재 몸체와; 상기 차단부재 몸체의 일면에서 원통형상으로 돌출되게 형성되며, 상기 래치 간섭부와 래치 사이로 진입하여 상기 래치와 래치 간섭부를 차단하는 차단부;를 포함하는 것이 좋다.In addition, the interference blocking member is installed on the support shaft is installed in the center of the hub shaft unit, the blocking member body to which the operation wire is connected; It is preferably formed to protrude in a cylindrical shape on one surface of the blocking member body, the blocking portion to enter between the latch interference portion and the latch to block the latch and the latch interference portion.
또한, 상기 래치 간섭부는, 상기 스프라켓 지지유닛의 내주에 일체로 형성된 것이 좋다.In addition, the latch interference portion is preferably formed integrally on the inner circumference of the sprocket support unit.
또한, 상기 스프라켓 지지유닛은, 상기 허브축 유닛의 외측에 지지베어링에 의해 회전 가능하게 지지되며, 외주에 다수의 스프라켓이 끼워져 결합되는 스프라켓 지지하우징; 및 상기 스프라켓 지지하우징의 단부에 체결되어, 상기 스프라켓 지지하우징에 결합된 스프라켓의 이탈을 방지하는 이탈방지캡;을 포함하며, 상기 래치 간섭부는 상기 이탈방지캡에 설치되는 것이 좋다.In addition, the sprocket support unit, the sprocket support housing which is rotatably supported by a support bearing on the outside of the hub shaft unit, a plurality of sprockets are fitted to the outer periphery; And a release preventing cap which is fastened to an end of the sprocket support housing and prevents detachment of the sprocket coupled to the sprocket support housing, wherein the latch interference part is installed at the release preventing cap.
또한, 상기 래치에는 상기 래치 지지캡의 외측에서 내측방향으로 갈수록 그 끝단이 상향 경사지게 형성된 가이드면이 형성되는 것이 좋다.In addition, the latch is preferably formed with a guide surface formed inclined upwardly from the end toward the inner side from the outside of the latch support cap.
또한, 상기 간섭부 차단부재의 상기 래치와 접하는 단부에는 내측으로 갈수록 경사지게 형성되어 상기 래치의 가이드면에 대향되게 테이퍼부가 형성되는 것이 좋다.In addition, the end portion of the interference part blocking member that is in contact with the latch is formed to be inclined toward the inner side is preferably a tapered portion formed to face the guide surface of the latch.
본 발명의 자전거 변속장치에 따르면, 주행하는 동안에 기어 변속을 할 수 있는 것은 물론이고, 정지 상태에서도 기어 변속이 가능하다.According to the bicycle transmission device of the present invention, not only can the gear shifting while driving, but also the gear shifting in the stationary state.
따라서, 평지를 주행하다가 갑자기 오르막길을 주행할 경우와 같이 저속으로 주행하는 상태에서도 기어변속을 용이하게 할 수 있게 됨으로써, 자전거를 보다 편리하게 이용할 수 있게 된다.Therefore, the gear shift can be easily performed even in a state of driving at a low speed, such as when driving on a flat road and driving uphill suddenly, so that the bicycle can be used more conveniently.
도 1은 본 발명의 실시예에 따른 자전거의 변속장치를 나타내 보인 분리사시도이다.1 is an exploded perspective view showing a shift of the bicycle according to an embodiment of the present invention.
도 2a는 도 1에 도시된 자전거의 변속장치의 결합단면도이다.FIG. 2A is a cross-sectional view of the transmission of the bicycle shown in FIG.
도 2b는 도 1에 도시된 래치유닛을 발췌하여 보인 사시도이다.FIG. 2B is a perspective view of the latch unit illustrated in FIG. 1.
도 3은 도 2a의 상태에서의 자전거의 변속장치를 나타내 보인 정면도이다.3 is a front view showing the transmission of the bicycle in the state of Figure 2a.
도 4는 도 2b의 요부를 발췌하여 나타내 보인 단면도이다.4 is a cross-sectional view showing the main portion of Figure 2b.
도 5는 도 4의 상태에서 간섭부 차단부재가 래치와 래치 간섭부 사이로 진입된 상태를 보인 도면이다.5 is a view illustrating a state in which the interference blocking member enters between the latch and the latch interference unit in the state of FIG. 4.
도 6 및 도 7 각각은 정지 상태에서 기어변속 가능한 상태를 설명하기 위한 도면이다.6 and 7 are diagrams for explaining a state in which gear shift is possible in the stationary state.
8은 본 발명의 다른 실시예에 따른 자전거의 변속장치를 설명하기 위한 도면이다.8 is a view for explaining a transmission device of a bicycle according to another embodiment of the present invention.
이하 첨부된 도면을 참조하여 본 발명의 실시예에 따른 자전거 변속장치를 자세히 설명하기로 한다.Hereinafter, a bicycle transmission apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 1 내지 도 7을 참조하면, 본 발명의 실시예에 따른 자전거 변속장치(10)는, 자전거의 바퀴가 결합되는 허브축 유닛(20)에 회전 가능하게 지지되며 외측에 복수의 스프라켓(30)이 지지되는 스프라켓 지지유닛(40), 허브축유닛(20)과 스프라켓 지지유닛(40) 사이에 설치되는 래치 유닛(50) 및 래치 제어유닛(60)을 구비한다.1 to 7, the bicycle transmission apparatus 10 according to the embodiment of the present invention is rotatably supported by a hub shaft unit 20 to which wheels of a bicycle are coupled, and a plurality of sprockets 30 on the outside thereof. And a latch unit 50 and a latch control unit 60 installed between the sprocket support unit 40, the hub shaft unit 20, and the sprocket support unit 40.
여기서 상기 허브축 유닛(20)은 허브축 몸체(21)와, 허브축 몸체(21)의 일단부에 결합되는 베어링 지지부재(23)를 구비한다. 허브축 몸체(21)는 중공축(21a)과, 중공축(21a)에서 서로 이격되게 설치되는 플랜지부(21a)를 가진다. 중공축(21a)의 일단에는 베어링 지지부재(23)가 체결되도록 나사선이 형성된다.Here, the hub shaft unit 20 includes a hub shaft body 21 and a bearing support member 23 coupled to one end of the hub shaft body 21. The hub shaft body 21 has a hollow shaft 21a and a flange portion 21a which is spaced apart from each other on the hollow shaft 21a. One end of the hollow shaft 21a is formed with a screw line to fasten the bearing support member 23.
상기 베어링 지지부재(23)는 원통형상으로, 그 외주에 지지베어링(70)이 설치되며, 일단 내주면에는 상기 중공축(21a)에 나사 결합되는 나사선이 형성되고, 타단부의 외주에는 후술할 래치 지지캡(51)이 나사 결합될 수 있도록 나사선이 형성된 나사결합부(23a)가 형성된다. 이러한 베어링 지지부재(23)는 중공축 몸체(21)와 일체로 형성될 수도 있고, 별도의 부품으로 제작되어 결합 될 수도 있다.The bearing support member 23 has a cylindrical shape, and a support bearing 70 is installed at an outer circumference thereof, and a screw thread screwed to the hollow shaft 21a is formed at one inner circumferential surface thereof, and a latch to be described later on the outer circumference of the other end thereof. A screw engaging portion 23a having a screw line is formed so that the support cap 51 can be screwed. The bearing support member 23 may be integrally formed with the hollow shaft body 21, or may be manufactured and combined as a separate component.
상기 스프라켓 지지유닛(40)과 허브축 유닛(20)의 베어링 지지부재(23) 사이에는 지지베어링(70)이 설치된다. 스프라켓 지지유닛(40)은 외주에 다수의 스프라켓(30)이 끼워져 지지되는 스프라켓 지지하우징(41)과, 스프라켓 지지하우징(41)의 단부에 결합되어 결합된 스프라켓(30)의 이탈을 방지하는 이탈방지캡(43)을 구비한다. 스프라켓 지지하우징(41)의 외주에는 결합된 스프라켓(30)의 자유로운 회전을 방지하기 위해 걸림턱이 일정한 패턴으로 형성된다. 이탈방지캡(43)은 스프라켓 지지하우징(41)의 단부에 나사 결합되는 링 형상을 가지며, 스프라켓 지지하우징(41)의 외주로 돌출되게 설치된다.A support bearing 70 is installed between the sprocket support unit 40 and the bearing support member 23 of the hub shaft unit 20. The sprocket support unit 40 is separated from the sprocket support housing 41 in which a plurality of sprockets 30 are inserted and supported on the outer circumference and the sprocket 30 coupled to an end of the sprocket support housing 41 to prevent the sprocket 30 from being separated. The prevention cap 43 is provided. On the outer circumference of the sprocket support housing 41, the locking jaw is formed in a predetermined pattern to prevent free rotation of the sprocket 30 coupled thereto. The separation prevention cap 43 has a ring shape that is screwed to the end of the sprocket support housing 41, and is installed to protrude to the outer circumference of the sprocket support housing 41.
또한, 상기 스프라켓 지지유닛(40)의 내주 즉, 구체적으로는 스프라켓 지지하우징(41)의 내주에는 후술할 래치 간섭부(57)가 설치되며, 이 래치 간섭부(57)에는 후술할 래치(53)가 걸리는 래치 간섭구(57a)가 형성된다.In addition, a latch interferer 57, which will be described later, is installed on an inner circumference of the sprocket support unit 40, that is, an inner circumference of the sprocket support housing 41, and a latch 53 to be described later. Latch interference hole 57a is formed.
상기 구성을 가지는 스프라켓 지지유닛(40)은 일방향(A; 자전거 바퀴 주행방향의 반대방향)으로는 자유회전 가능하며, 타방향(B: 자전거 바퀴 주행방향)으로의 자유 회전은 래치 유닛(50)에 의해 선택적으로 제한된다. Sprocket support unit 40 having the above configuration can be freely rotated in one direction (A (opposite direction of the bicycle wheel driving direction), free rotation in the other direction (B: bicycle wheel driving direction) is latch unit 50 Is optionally limited.
상기 래치 유닛(50)은 스프라켓 지지유닛(40)의 일방향(A)으로의 회전을 허용하고, 타방향(B)으로의 회전을 선택적으로 제한한다. 이러한 래치 유닛(50)은, 허브축 유닛(20)의 베어링 지지부재(23)의 단부 외주에 결합되는 래치 지지캡(51)과, 래치 지지캡(51)의 외측에 움직임 가능하게 설치되는 래치(53)와, 래치(53)가 눌린 상태에서 외측으로 돌출되도록 탄성 지지하는 탄성부재(55) 및, 래치 간섭부(57)를 구비한다.The latch unit 50 allows rotation of the sprocket support unit 40 in one direction A and selectively restricts rotation in the other direction B. As shown in FIG. The latch unit 50 includes a latch support cap 51 coupled to an outer circumference of the end of the bearing support member 23 of the hub shaft unit 20, and a latch movably installed outside the latch support cap 51. 53, an elastic member 55 for elastically supporting so as to protrude outward in the pressed state of the latch 53, and a latch interference portion 57.
상기 래치 지지캡(51)은 베어링 지지부재(23)의 일측 단부에 나사 결합됨으로써, 스프라켓 지지유닛(40) 및 지지베어링(70)이 허브축 유닛(20)에서 분리되지 못하도록 하는 역할을 한다. 래치 지지캡(51)의 캡 몸체(51a)의 외주에는 래치(53)가 안착되는 래치 안착홈(51b)이 외주로부터 인입되게 형성된다. 또한, 캡 몸체(51a)의 외주에는 원주 방향으로 상기 탄성부재(55)가 지지되는 환형홈(51c)이 형성된다.The latch support cap 51 is screwed to one end of the bearing support member 23, thereby preventing the sprocket support unit 40 and the support bearing 70 from being separated from the hub shaft unit 20. On the outer circumference of the cap body 51a of the latch support cap 51, a latch seating groove 51b on which the latch 53 is seated is formed to be pulled out from the outer circumference. In addition, an outer circumference of the cap body 51a is formed with an annular groove 51c in which the elastic member 55 is supported in the circumferential direction.
상기 래치(53)는 래치 지지캡(51)의 외주에 형성된 래치 안착홈(51b)에 수용되도록 설치되며, 래치 안착홈(51b) 내에서 소정 각도 회동되도록 설치되어, 자세 변경되면서 상기 래치 간섭부(57)에 형성되는 래치 걸림구(57a)에 걸리거나 벗어나도록 움직일 수 있다. 즉, 래치(53)는 래치 지지캡(51)의 외주로부터 돌출되는 자세(도 2a 내지 도 4)에서는 래치 걸림구(57a)에 걸려서 스프라켓 지지유닛(40)이 일방향(A)으로 자유회전 하지 못하고, 허브축 유닛(20)과 함께 회전되도록 제한하고, 타방향(B)으로는 래치 걸림구(57a)에 간섭되어 탄력적으로 눌려지면서 스프라켓 지지유닛(40)이 래치(53)에 걸리지 않고 자유회전될 수 있도록 한다. 이를 위해 래치(53)는 탄성부재(55)에 의해 탄력적으로 지지되어, 래치 걸림구(57a)에 밀착되는 방향으로 탄력적으로 지지된다.The latch 53 is installed to be received in the latch seating groove 51b formed on the outer circumference of the latch support cap 51, and is installed to rotate at a predetermined angle within the latch seating groove 51b, and the attitude of the latch interferer is changed. It can be moved to engage or escape the latch latch (57a) formed in the (57). That is, the latch 53 is caught in the latch latch 57a in the posture (FIGS. 2A to 4) protruding from the outer circumference of the latch support cap 51, so that the sprocket support unit 40 does not freely rotate in one direction A. FIG. In this case, the sprocket support unit 40 is not caught by the latch 53 and freely restrained to be rotated together with the hub shaft unit 20, while being elastically pressed in the other direction (B) by interfering with the latch latch 57a. Allow it to rotate. To this end, the latch 53 is elastically supported by the elastic member 55, and is elastically supported in a direction in close contact with the latch latch 57a.
상기 탄성부재(55)는 지지캡(51)의 환형홈(51c)에 끼워진 상태로 래치(53)를 지지하는 탄성링을 포함하며, 래치(53)의 중앙부분에는 탄성부재(55)가 끼워져 지지되는 슬롯(55a)이 형성된다.The elastic member 55 includes an elastic ring for supporting the latch 53 in a state of being fitted into the annular groove 51c of the support cap 51, and the elastic member 55 is inserted into a central portion of the latch 53. Supported slots 55a are formed.
상기 래치 간섭부(57)는 래치 지지캡(51)의 외주에 대응되는 스프라켓 지지유닛(40)의 내주에 설치되며, 래치(53)의 끝단이 걸리는 래치 간섭구(57a)가 원주 방향으로 일정 간격으로 형성된다. 이러한 래치 간섭부(57)는 링 형상을 가지며, 스프라켓 지지유닛(40)의 내주에 설치될 수도 있고, 바람직하게는 스프라켓 지지유닛(40)의 내주에 일체로 형성될 수도 있다.The latch interference portion 57 is installed on the inner circumference of the sprocket support unit 40 corresponding to the outer circumference of the latch support cap 51, and the latch interference hole 57a at which the end of the latch 53 is caught is fixed in the circumferential direction. Formed at intervals. The latch interference portion 57 has a ring shape, may be installed on the inner circumference of the sprocket support unit 40, and preferably may be integrally formed on the inner circumference of the sprocket support unit 40.
또한, 바람직하게는 래치(53)는 도 4에 도시된 바와 같이, 래치 지지캡(51)의 외측에서 내측방향으로 갈수록 그 끝단이 상향 경사지게 형성된 가이드면(53a)을 가진다.Also, as shown in FIG. 4, the latch 53 preferably has a guide surface 53a formed at an end thereof inclined upward from the outside of the latch support cap 51 toward the inside thereof.
따라서, 스프라켓 지지하우징(41)의 내주 즉, 래치 간섭부(57)와 래치(53)와의 간격은 스프라켓 지지하우징(41) 내측으로 갈수록 점진적으로 가깝게 형성되고, 외측으로 갈수록 간격이 멀어지게 된다. 그로 인해 후술할 래치 제어유닛(60)의 간섭부 차단부재(61)가 래치 간섭부(57)와 래치(53) 사이로 용이하게 끼워져 진입될 수 있게 된다.Therefore, the inner circumference of the sprocket support housing 41, that is, the gap between the latch interference portion 57 and the latch 53, is formed gradually closer to the inside of the sprocket support housing 41, and the distance becomes farther toward the outside. Therefore, the interference part blocking member 61 of the latch control unit 60 to be described later can be easily inserted between the latch interference part 57 and the latch 53.
상기 래치 제어유닛(60)은 래치 유닛(50)을 선택적으로 제어하여, 상기 타방향(B)으로도 허브축 유닛(20)에 대해 스프라켓 지지유닛(40)의 자유회전이 가능하도록 하여 정지 상태에서 기어 변속이 가능하도록 하기 위한 것이다.The latch control unit 60 selectively controls the latch unit 50 to allow free rotation of the sprocket support unit 40 with respect to the hub shaft unit 20 also in the other direction B. This is to allow gear shifting at.
이러한 래치 제어유닛(60)은 간섭부 차단부재(61)와, 간섭부 차단부재(61)의 위치를 제어하는 위치 제어부(63)를 구비한다.The latch control unit 60 includes an interference part blocking member 61 and a position controller 63 for controlling the position of the interference part blocking member 61.
간섭부 차단부재(61)는 지지축(1)에 이동 가능하게 결합되는 차단부재 몸체(61a)와, 차단부재 몸체(61a)의 일면에서 원통형으로 돌출되는 차단부(61b)를 가진다. 상기 지지축(1)은 허브축 유닛(20)의 중심에 결합되어 허브축 유닛(20)이 상대적으로 회전가능하게 결합되는 축으로서, 자전거 프레임 등이 결합 될 수 있고, 상기 차단부재 몸체(61a)도 축 방향으로 슬라이딩 가능하게 설치될 수 있다.The interference blocking member 61 has a blocking member body 61a movably coupled to the support shaft 1 and a blocking portion 61b protruding in a cylindrical shape from one surface of the blocking member body 61a. The support shaft (1) is coupled to the center of the hub shaft unit 20 is a shaft to which the hub shaft unit 20 is relatively rotatably coupled, such as a bicycle frame can be coupled, the blocking member body (61a) ) May also be slidably installed in the axial direction.
상기 차단부(61b)는 도 2a 및 도 4와 같은 상태 즉, 래치(53)와 래치 간섭부(57) 사이로 끼워지지 않고 외측에 위치된 상태에서, 화살표 C 방향으로 이동하여 도 5 및 도 6과 같이, 래치(53)와 래치 간섭부(57) 사이로 위치되도록 이동되면, 래치(53)가 래치 간섭부(57)와 접하는 것을 차단하고, 차단부(61b)의 내주면에 래치(53)가 접하도록 한다. 이와 같이 래치(53)가 래치 간섭부(57)와 접하지 않도록 차단부(61b)에 의해 차단되면, 스프라켓 지지하우징(41)은 A 방향 및 B 방향 각각으로 자유회전 가능한 상태가 되며, 따라서 정지상태에서도 B 방향으로 회전시킬 수 있게 되어 기어 변속이 가능하게 된다.The blocking portion 61b moves in the direction of arrow C in a state as shown in FIGS. 2A and 4, that is, positioned outside the latch 53 and the latch interference portion 57, and is located outside. As such, when moved to be positioned between the latch 53 and the latch interference portion 57, the latch 53 is prevented from contacting the latch interference portion 57, and the latch 53 is disposed on the inner circumferential surface of the blocking portion 61b. Be in touch. When the latch 53 is blocked by the blocking portion 61b so as not to contact the latch interference portion 57 in this manner, the sprocket support housing 41 becomes freely rotatable in each of the A and B directions, and thus stops. In this state, the gear can be rotated in the B direction, thereby enabling a gear shift.
또한, 바람직하게는 차단부(61b)의 단부가 내경쪽으로 경사지게 형성된 테이퍼부(61c)가 형성되어, 상기 래치(53)의 가이드면(53a)과 상보적으로 접함으로써, 차단부(61b)가 래치(53)에 간섭되지 않고 래치(53)와 래치 간섭부(57) 사이로 자연스럽게 진입할 수 있도록 한다. 즉, 차단부(61b)는 래치(53)와 래치 간섭부(57) 사이로 진입되면서, 래치(53)가 차단부(61b)의 내주면에 눌려서 자연스럽게 래치 간섭부(57)와 이격되고, 차단부(61b) 내주에 접하게 된다.In addition, the tapered portion 61c is preferably formed such that the end portion of the blocking portion 61b is inclined toward the inner diameter, and the blocking portion 61b is contacted with the guide surface 53a of the latch 53. It allows natural entry between the latch 53 and the latch interferer 57 without interfering with the latch 53. That is, as the blocking portion 61b enters between the latch 53 and the latch interference portion 57, the latch 53 is pressed against the inner circumferential surface of the blocking portion 61b so that the blocking portion 61b is naturally spaced apart from the latch interference portion 57. (61b) the inner circumference.
상기 위치제어부(63)는 간섭부 차단부재(61)를 위치 제어하기 위한 것으로서, 일예로서 간섭부 차단부재(61)에 연결되는 동작와이어(64) 및 동작와이어(64)가 연결되는 와이어 홀더(65)를 구비할 수 있다. 와이어 홀더(65)는 지지축(1)에 고정되거나 또는 자전거 프레임에 고정될 수 있다. 이 와이어 홀더(65)에 동작 와이어(64)가 지지된 상태로 간섭부 차단부재(61)에 연결될 수 있다.The position control unit 63 is for controlling the position of the interference blocking member 61, as an example, a wire holder connected to the operation wire 64 and the operation wire 64 is connected to the interference blocking member 61 ( 65). The wire holder 65 may be fixed to the support shaft 1 or fixed to the bicycle frame. The wire holder 65 may be connected to the interference blocking member 61 while the operation wire 64 is supported.
그리고 동작와이어(64)는 자전거의 핸들에 연결되는 작동레버(미도시)에 연결되고, 자전거 운전자가 상기 작동레버를 조작함에 따라서 동작와이어(64)가 당겨지거나 원위치 되도록 함으로써 간섭부 차단부재(61)의 위치를 제어할 수 있다.In addition, the operation wire 64 is connected to an operation lever (not shown) connected to the handle of the bicycle, and the interference part blocking member 61 by allowing the operation wire 64 to be pulled or returned as the bicycle driver operates the operation lever. ) Can be controlled.
이때, 상기 와이어 홀더(65)와 간섭부 차단부재(61) 사이에 탄성부재(66)가 더 설치될 수도 있다. 이 경우, 탄성부재(66)는 간섭부 차단부재(61)가 래치 간섭부(57)와 래치(53) 사이로 진입되는 방향으로 탄성력을 제공함으로써, 동작와이어(64)에 인장력(당기는 힘)이 제거될 경우, 탄성부재(66)의 탄성력에 의해 간섭부 차단부재(61)가 도 5 및 도 6과 같은 위치로 이동되도록 할 수 있다. 그리고, 손잡이쪽에서 운전자가 작동레버를 조작하여 동작와이어(64)를 당기게 되면, 탄성부재(66)의 탄성력을 이기고 간섭부 차단부재(61)가 래치 간섭부(57)와 래치(53) 사이에서 빠져나와서 도 4와 같은 위치로 이동될 수 있게 된다.In this case, an elastic member 66 may be further installed between the wire holder 65 and the interference blocking member 61. In this case, the elastic member 66 provides an elastic force in the direction in which the interference blocking member 61 enters between the latch interference portion 57 and the latch 53, so that a tensile force (pulling force) is applied to the operation wire 64. When removed, the interference blocking member 61 may be moved to a position as shown in FIGS. 5 and 6 by the elastic force of the elastic member 66. Then, when the driver pulls the operation wire 64 by operating the operating lever on the handle side, the elastic force of the elastic member 66 is overcome, and the interference blocking member 61 is interposed between the latch interference portion 57 and the latch 53. It can be exited and moved to a position as shown in FIG. 4.
여기서 상기 위치 제어부(63)의 구성은 자전거 핸들에 설치되는 조작레버 등을 포함할 수 있으며, 이러한 와이어 조작부, 동작와이어(64) 및 와이어 홀더(65) 등의 구성은 자전거에 널리 적용되는 기어변속 레버 및 와이어의 구조 또는 브레이크 레버 및 와이어의 구성으로부터 용이하게 적용할 수 있는 것이므로 더 이상의 자세한 설명은 생략한다.Here, the configuration of the position control unit 63 may include an operation lever installed on a bicycle handle, and the like. The configuration of the wire operation unit, the operation wire 64, the wire holder 65, and the like is a gear shifting widely applied to a bicycle. Since it can be easily applied from the structure of the lever and the wire or the configuration of the brake lever and the wire further description will be omitted.
또한, 상기 위치 제어부(63)는 상기 동작와이어(64)를 이용한 동작제어 이외에도, 간섭부 차단부재(61)에 영구자석을 설치하고, 그 영구자석에 대응되는 쪽 즉, 와이어홀더(65)에 전자석을 설치하고, 전자석을 선택적으로 동작시켜서 영구자석과 작용하도록 함으로써, 영구자석이 설치된 간섭부 차단부재(61)가 위치 이동되면서 래치 간섭부(57)와 래치(53) 사이로 진입되고 빠져나오는 동작이 이루어지도록 할 수도 있다.In addition to the operation control using the operation wire 64, the position control unit 63 installs a permanent magnet on the interference blocking member 61, and corresponds to the permanent magnet, that is, on the wire holder 65. By installing an electromagnet and selectively operating the electromagnet to act as a permanent magnet, an interference part blocking member 61 in which the permanent magnet is installed is moved into and out of the latch interference part 57 and the latch 53 while being moved. This can be done.
이하 상기 구성을 가지는 본 발명의 실시예에 따른 자전거 변속기의 작용효과에 대해서 자세히 설명하기로 한다.Hereinafter will be described in detail the operation and effect of the bicycle transmission according to an embodiment of the present invention having the above configuration.
먼저, 도 2a, 도 2b, 도 3 및 도 4는 주행상태를 나타내 보인 것으로서, 이 상태에서는 래치(53)가 정상적으로 동작을 하게 됨으로써, 스프라켓 지지유닛(40)은 일방향(A)으로는 허브축 유닛(20)에 대해 상대적으로 자유회전 가능하며, 타방향(B)으로는 허브축 유닛(20)과 일체로 회전되도록 래치(53)에 의해 구속된다. 따라서 이러한 상태에서는 주행 중에 기어 변속장치를 이용하여 체인을 위치 이동시켜서 기어 변속 가능하도록 할 수 있으며, 자전거 페달을 밟으면, 그 동력이 스프라켓 지지유닛(40)을 통해 허브축 유닛(20)으로 전달되어 자전거 바퀴를 회전시킬 수 있게 된다.First, FIGS. 2A, 2B, 3, and 4 show driving states, and in this state, the latch 53 operates normally, so that the sprocket support unit 40 has a hub shaft in one direction (A). It is relatively freely rotatable with respect to the unit 20, and is constrained by the latch 53 so as to rotate integrally with the hub shaft unit 20 in the other direction (B). Therefore, in this state, it is possible to shift the chain by shifting the chain using the gear transmission during driving, and when the pedal is pressed, the power is transmitted to the hub shaft unit 20 through the sprocket support unit 40. You can rotate the bicycle wheels.
한편, 상기와 같은 상태로 자전거를 이용하다가, 정지 상태에서 기어 변속을 하고자 할 경우에는, 위치 제어부(63)를 동작시켜서 도 5 내지 도 7에 도시된 바와 같이, 간섭부 차단부재(61)의 차단부(61b)가 래치(53)와 래치 간섭부(57) 사이에 위치되도록 이동시킨다.On the other hand, while using the bicycle in the state as described above, when the gear shift in the stationary state, by operating the position control unit 63 as shown in Figs. 5 to 7, the interference blocking member 61 The blocking portion 61b is moved to be positioned between the latch 53 and the latch interference portion 57.
이 상태에서 자전거 페달을 주행 방향으로 회전시키면, 체인의 힘에 의해 스프라켓 지지유닛(40)에 회전력이 전달되어 회전되며, 이때 래치(53)는 차단부(61b)의 내주로 접하여 래치 간섭부(57)와 분리된 상태이므로, 스프라켓 지지유닛(40)이 타방향(B)으로도 자유 회전 가능한 상태가 된다. 이와 같이, 정지된 상태에서, 스프라켓 지지유닛(40)이 타방향(B)으로도 자유회전 가능하게 되면, 정지 상태에서 기어 변속을 할 수 있게 된다.In this state, when the bicycle pedal is rotated in the driving direction, a rotational force is transmitted to the sprocket support unit 40 by the force of the chain, and rotates. At this time, the latch 53 contacts the inner circumference of the blocking portion 61b to engage the latch interference part ( 57, the sprocket support unit 40 is freely rotated in the other direction (B). As such, when the sprocket support unit 40 is freely rotatable in the other direction B in the stopped state, the gear shift can be performed in the stopped state.
그리고 기어 변속이 끝난 뒤에, 위치 제어부(63)를 제어하여 간섭부 차단부재(61)를 다시 초기위치(도 2a 내지 도 4의 위치)로 이동시키면, 차단부(61b)가 래치(53)와 래치 간섭부(57) 사이에서 빠져나오게 되어, 래치(53)가 다시 래치 간섭부(57)에 접하여 간섭되는 상태가 된다.After the gear shift is completed, the position control unit 63 is controlled to move the interference blocking unit 61 back to the initial position (the position of FIGS. 2A to 4), and the blocking unit 61b is connected to the latch 53. It exits between the latch interference parts 57, and the latch 53 comes into contact with the latch interference parts 57 again, and interferes.
따라서 스프라켓 지지유닛(40)은 다시 타방향(B)으로의 자유회전이 불가한 상태가 된다.Therefore, the sprocket support unit 40 is in a state in which free rotation in the other direction B is impossible again.
한편, 도 8 및 도 9에 도시된 바와 같이, 본 발명의 다른 실시예에 따르면, 래치(53)가 선택적으로 구속되는 래치 간섭부(57')가 상기 스프라켓 지지유닛(40)의 이탈방지캡(43')에 일체로 형성될 수도 있다. 이 경우, 이탈방지캡(43')은 스프라켓 지지하우징(41)의 단부의 외주면 또는 내주면에 나사 결합되며, 외주면 및 내주면 각각을 덮도록 형성된 구조를 가질 수 있다.On the other hand, as shown in Figure 8 and 9, according to another embodiment of the present invention, the latch interference portion 57 ′ in which the latch 53 is selectively restrained, the separation preventing cap of the sprocket support unit 40 It may be formed integrally with 43 '. In this case, the release preventing cap 43 'is screwed to the outer circumferential surface or the inner circumferential surface of the end of the sprocket support housing 41, may have a structure formed to cover each of the outer circumferential surface and the inner circumferential surface.
이상, 본 발명을 본 발명의 원리를 예시하기 위한 바람직한 실시예와 관련하여 도시하고 설명하였으나, 본 발명은 그와 같이 도시되고 설명된 그대로의 구성 및 작용으로 한정되는 것이 아니다. 오히려 첨부된 특허청구범위의 사상 및 범위를 일탈함이 없이 본 발명에 대한 다수의 변경 및 수정이 가능함을 당업자들은 잘 이해할 수 있을 것이다.While the invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.
[부호의 설명][Description of the code]
20..허브축 유닛 30..스프라켓20.Hub shaft unit 30.Sprocket
40..스프라켓 지지유닛 50..래치 유닛40..Sprocket Support Unit 50..Latch Unit
60..래치 제어유닛 70..지지베어링60. Latch control unit 70. Support bearing

Claims (8)

  1. 자전거의 바퀴가 결합되는 허브축 유닛에 회전 가능하게 지지되며, 외측에 복수의 스프라켓이 지지되는 스프라켓 지지유닛;A sprocket support unit rotatably supported by a hub shaft unit to which the wheels of the bicycle are coupled, and having a plurality of sprockets supported on the outside thereof;
    상기 허브축 유닛과 상기 스프라켓 지지유닛 사이에 설치되어, 상기 스프라켓 지지유닛의 일방향으로의 회전을 허용하고, 타방향으로의 회전을 억제하는 래치 유닛과;A latch unit installed between the hub shaft unit and the sprocket support unit to allow rotation of the sprocket support unit in one direction and to suppress rotation in the other direction;
    상기 래치 유닛을 선택적으로 제어하여, 상기 타방향으로도 상기 허브축 유닛에 대해 상기 스프라켓 지지유닛의 자유회전이 가능하도록 하여 정지 상태에서 기어 변속이 가능하도록 하는 래치 제어유닛;을 포함하고,And a latch control unit for selectively controlling the latch unit to enable free rotation of the sprocket support unit with respect to the hub shaft unit in the other direction so that gear shifting is possible in a stopped state.
    상기 래치 유닛은,The latch unit,
    상기 허브축 유닛의 단부 외주측에 움직임 가능하게 설치되는 래치와;A latch movably installed on an outer circumferential side of the hub shaft unit;
    상기 래치가 눌린 상태에서 외측으로 돌출되도록 탄성 지지하는 탄성부재; An elastic member for elastically supporting the latch so as to protrude outwardly;
    상기 래치에 마주하도록 상기 스프라켓 지지유닛의 내주에 설치되며, 상기 스프라켓 지지유닛이 상기 타방향으로 회전시 상기 래치가 걸리도록 하는 래치 걸림구를 가지는 래치 간섭부; 및A latch interference part installed on an inner circumference of the sprocket support unit so as to face the latch and having a latch catching hole for engaging the latch when the sprocket support unit rotates in the other direction; And
    상기 허브축 유닛의 단부에 결합되어 상기 스프라켓 지지유닛이 상기 허브축 유닛에서 이탈되는 것을 방지하며, 그 외주에서 상기 래치를 지지하는 래치 지지캡;을 포함하는 것을 특징으로 하는 자전거의 변속장치.And a latch support cap coupled to an end of the hub shaft unit to prevent the sprocket support unit from being separated from the hub shaft unit and supporting the latch at its outer circumference.
  2. 제1항에 있어서, 상기 래치 제어유닛은,The method of claim 1, wherein the latch control unit,
    상기 래치 간섭부와 상기 래치 사이에 위치되거나 벗어나도록 설치되며, 상기 래치 간섭부와 상기 래치 사이에 위치시 상기 래치가 상기 간섭부와 분리되도록 하는 간섭부 차단부재와;An interference part blocking member disposed between the latch interference part and the latch so as to be separated from the latch interference part when the latch interference part is positioned between the latch interference part and the latch;
    상기 간섭부 차단부재에 연결되며, 동작시 상기 간섭부 차단부재를 선택적으로 이동시키는 위치 제어부;를 포함하며,And a position controller connected to the interference blocking member and selectively moving the interference blocking member during operation.
    상기 간섭부 차단부재가 상기 래치와 상기 래치 간섭부 사이에 위치되면, 상기 래치가 상기 간섭부 차단부재 내주에 위치된 상태로 미끄럼 운동하여 상기 스프라켓 지지유닛이 상기 타방향으로 자유회전 가능한 것을 특징으로 하는 자전거의 변속장치.When the interference blocking member is located between the latch and the latch interference portion, the latch is sliding in the state located in the inner peripheral portion of the interference blocking member, the sprocket support unit is capable of free rotation in the other direction Gearshift of the bicycle.
  3. 제2항에 있어서, 상기 위치 제어부는,The method of claim 2, wherein the position control unit,
    상기 간섭부 차단부재를 상기 래치와 래치 간섭부 사이로 진입되도록 탄력적으로 지지하는 탄성부재; 및An elastic member for elastically supporting the interference blocking member so as to enter between the latch and the latch interference portion; And
    상기 간섭부 차단부재에 연결되며, 당기는 힘의 작용시 상기 간섭부 차단부재가 상기 탄성부재의 탄성력을 이기고 상기 래치와 래치 간섭부 사이에서 벗어나도록 하는 동작와이어;를 포함하는 것을 특징으로 하는 자전거의 변속장치.And an operation wire which is connected to the interference blocking member and causes the interference blocking member to overcome the elastic force of the elastic member and to be released between the latch and the latching interference part when a pulling force is applied. Gearbox.
  4. 제3항에 있어서, 상기 간섭부 차단부재는,The method of claim 3, wherein the interference blocking member,
    상기 허브축 유닛의 중심에 설치되는 지지축에 이동 가능하게 설치되며, 상기 동작 와이어가 연결되는 차단부재 몸체와;A blocking member body movably installed on a support shaft installed at the center of the hub shaft unit, to which the operation wire is connected;
    상기 차단부재 몸체의 일면에서 원통형상으로 돌출되게 형성되며, 상기 래치 간섭부와 래치 사이로 진입하여 상기 래치와 래치 간섭부를 차단하는 차단부;를 포함하는 것을 특징으로 하는 자전거의 변속장치.And a blocking portion formed to protrude in a cylindrical shape from one surface of the blocking member body and intercepting the latch interference portion and the latch to block the latch and the latch interference portion.
  5. 제4항에 있어서, 상기 래치 간섭부는,The method of claim 4, wherein the latch interference portion,
    상기 스프라켓 지지유닛의 내주에 일체로 형성된 것을 특징으로 하는 자전거의 변속장치.Bicycle shifting device characterized in that formed integrally with the inner circumference of the sprocket support unit.
  6. 제1항 내지 제4항 중 어느 한 항에 있어서, 상기 스프라켓 지지유닛은,The sprocket support unit according to any one of claims 1 to 4,
    상기 허브축 유닛의 외측에 지지베어링에 의해 회전 가능하게 지지되며, 외주에 다수의 스프라켓이 끼워져 결합되는 스프라켓 지지하우징; 및A sprocket support housing rotatably supported by a support bearing on an outer side of the hub shaft unit, wherein a plurality of sprockets are fitted and coupled to an outer circumference thereof; And
    상기 스프라켓 지지하우징의 단부에 체결되어, 상기 스프라켓 지지하우징에 결합된 스프라켓의 이탈을 방지하는 이탈방지캡;을 포함하며,And a release preventing cap which is fastened to an end of the sprocket support housing and prevents the sprocket from being separated from the sprocket coupled to the sprocket support housing.
    상기 래치 간섭부는 상기 이탈방지캡에 설치되는 것을 특징으로 하는 자전거의 변속장치.And the latch interference part is installed on the release preventing cap.
  7. 제2항 내지 제5항 중 어느 한 항에 있어서,The method according to any one of claims 2 to 5,
    상기 래치에는 상기 래치 지지캡의 외측에서 내측방향으로 갈수록 그 끝단이 상향 경사지게 형성된 가이드면이 형성되는 것을 특징으로 하는 자전거의 변속장치.The latch of the bicycle, characterized in that the guide surface is formed with the end is inclined upward toward the inward direction from the outside of the latch support cap.
  8. 제7항에 있어서,The method of claim 7, wherein
    상기 간섭부 차단부재의 상기 래치와 접하는 단부에는 내측으로 갈수록 경사지게 형성되어 상기 래치의 가이드면에 대향되게 테이퍼부가 형성되는 것을 특징으로 하는 자전거의 변속장치.And an end portion of the interference member blocking member that is inclined toward the inside thereof so as to be inclined toward the inside thereof, and a tapered portion is formed to face the guide surface of the latch.
PCT/KR2013/006226 2012-07-12 2013-07-11 Transmission for bicycle WO2014010976A1 (en)

Applications Claiming Priority (2)

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KR1020120076060A KR101196008B1 (en) 2012-07-12 2012-07-12 Bicycle transmission
KR10-2012-0076060 2012-07-12

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WO2014010976A1 true WO2014010976A1 (en) 2014-01-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093261A (en) * 1977-05-09 1978-06-06 Persson Ray S Coaster brake for bicycle with derailleur speed change mechanism
KR960000702A (en) * 1994-06-14 1996-01-25 마재열 Bicycle forward drive
EP1213158A2 (en) * 2000-12-07 2002-06-12 Shimano Inc. Bicycle hub
EP1342657A2 (en) * 2002-03-08 2003-09-10 Shimano Inc. Sprocket assembly for a bicycle
JP2005280591A (en) * 2004-03-30 2005-10-13 Fujiwara Wheel:Kk Transmission device for bicycle
KR20090089520A (en) * 2008-02-19 2009-08-24 김현옥 Two-wheel drive type driving mechanism for cycle
US20100234153A1 (en) * 2008-03-27 2010-09-16 I-Shyong Lu Transmission neutralizing structure for pedal-powered vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093261A (en) * 1977-05-09 1978-06-06 Persson Ray S Coaster brake for bicycle with derailleur speed change mechanism
KR960000702A (en) * 1994-06-14 1996-01-25 마재열 Bicycle forward drive
EP1213158A2 (en) * 2000-12-07 2002-06-12 Shimano Inc. Bicycle hub
EP1342657A2 (en) * 2002-03-08 2003-09-10 Shimano Inc. Sprocket assembly for a bicycle
JP2005280591A (en) * 2004-03-30 2005-10-13 Fujiwara Wheel:Kk Transmission device for bicycle
KR20090089520A (en) * 2008-02-19 2009-08-24 김현옥 Two-wheel drive type driving mechanism for cycle
US20100234153A1 (en) * 2008-03-27 2010-09-16 I-Shyong Lu Transmission neutralizing structure for pedal-powered vehicle

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