WO2021036804A1 - 一种刹把及使用该刹把的自行车 - Google Patents

一种刹把及使用该刹把的自行车 Download PDF

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Publication number
WO2021036804A1
WO2021036804A1 PCT/CN2020/108959 CN2020108959W WO2021036804A1 WO 2021036804 A1 WO2021036804 A1 WO 2021036804A1 CN 2020108959 W CN2020108959 W CN 2020108959W WO 2021036804 A1 WO2021036804 A1 WO 2021036804A1
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WIPO (PCT)
Prior art keywords
groove
protective shell
main arm
handle
arm
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PCT/CN2020/108959
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English (en)
French (fr)
Inventor
晁志伟
王一雄
Original Assignee
北京优贝百祺科技股份有限公司
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Application filed by 北京优贝百祺科技股份有限公司 filed Critical 北京优贝百祺科技股份有限公司
Priority to EP20785896.0A priority Critical patent/EP3812258B1/en
Priority to US17/038,077 priority patent/US10974787B2/en
Publication of WO2021036804A1 publication Critical patent/WO2021036804A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K23/00—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
    • B62K23/02—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
    • B62K23/06—Levers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
    • B62L3/00—Brake-actuating mechanisms; Arrangements thereof
    • B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
    • B62L3/00—Brake-actuating mechanisms; Arrangements thereof
    • B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
    • B62L3/026—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever actuation by a turning handle or handlebar

Definitions

  • the invention relates to the technical field of bicycles, in particular to a brake lever and a bicycle using the brake lever.
  • the utility model patent with the authorized announcement number CN202609008U discloses a brake lever of a children's bicycle.
  • the bolt is used to abut the handle to adjust the initial angle state of the handle, so that the distance between the handle and the handle after turning a certain initial angle is shortened, making it more comfortable for children to use.
  • One of the objectives of the present invention is to provide a brake lever, which has the advantage of being able to achieve a sufficient pulling stroke with a short operating stroke.
  • a brake lever comprising a protective shell, a fixing component that cooperates with the protective shell, a connector for connecting a handbrake cable, and a handbrake component
  • the handbrake component includes one end
  • the main arm is rotatably connected to the protective shell.
  • the other end of the main arm is connected to the handle to rotate.
  • the main arm is driven to rotate by applying force to the handle.
  • the connecting piece is driven by the transmission member to move in the direction of tightening the handbrake cable.
  • the handle is provided with an auxiliary support arm, and both ends of the auxiliary support arm are rotatably connected with the protective shell and the handle.
  • the main arm is driven to rotate by applying a force to the handle.
  • the connecting member is driven by the transmission member to move in the direction of tightening the handbrake line to complete the braking action. Since it is divided into two parts, the main arm and the handle, only the main arm part has a much shorter moment arm than the brake handle in the prior art. Therefore, under the same operating stroke, compared with the brake handle in the prior art, it has more The larger the rotation angle, the greater the rotation angle, the longer the cable stroke.
  • the auxiliary support arm is rotationally connected with the protective shell and the handle to assist in supporting the handle, so that the handle moves along a certain path.
  • the handle moves along the rotation path defined by the main arm and the auxiliary support arm.
  • the main arm is rotated by the force of the handle and the rotation is converted into a linear motion by the transmission member.
  • the main arm rotates, it cooperates with the auxiliary support arm.
  • the transmission member includes bar-shaped teeth formed on the side of the connecting member and an arc-shaped rack located on the main arm, the bar-shaped teeth mesh with the arc-shaped rack, and the arc-shaped rack The center of the circle coincides with the rotation center line of the main arm and the protective shell.
  • the arc-shaped rack is matched with the bar-shaped teeth, so that when the main arm rotates, the arc-shaped rack drives the bar-shaped teeth to move. Since the center of the arc-shaped rack coincides with the rotation center line of the main arm and the protective shell, the distance between the arc-shaped rack and the center of rotation will not change during the rotation of the main arm, so it can always be meshed together.
  • the transmission member includes a force receiving block formed on the side of the connecting member and a force applying block that moves with the main arm. During the rotation of the main arm, the force applying block abuts against the force receiving block.
  • the force applying block exerts a force on the force receiving block, and the force receiving block and the connecting member move in the direction of tightening the brake line.
  • the present invention is further configured such that: the rotation center lines of the main arm, the protective shell, and the handle, and the rotation center lines of the auxiliary support arm, the protective shell, and the handle are all parallel to each other, and the four rotation center lines are respectively located in the four parallelograms.
  • the handle includes a hand grip section, in the process of the main arm, auxiliary support arm rotation, the hand grip section is parallel to the handlebar.
  • the handle is always maintained in the original orientation state during the rotation. Therefore, the hand grip section can always be parallel to the handlebar during the entire turning process, and the hand handle is more comfortable when applying force to the handlebar.
  • connection point of the auxiliary support arm and the protective shell is located in the direction of rotation of the main arm when the connection point of the main arm and the protective shell is facing toward the braking, and the connection point of the auxiliary support arm and the protective shell is compared with that of the main arm The protective shell connection point is closer to the handlebar.
  • connection point of the auxiliary support arm and the protective shell at a position closer to the handlebar than the connection point of the main arm and the protective shell, the auxiliary support arm and the The protective shell connection point will not become an obstacle when the main arm rotates.
  • the main arm can be rotated by operating the handle until it stops when the handle abuts the handlebar, so that the main arm can have the largest possible rotation angle.
  • the protective shell is provided with a square hole penetrating at both ends
  • the connecting piece includes a cylinder penetrating through the square hole, and a side of the cylinder facing the side wall of the square hole is provided with a diameter.
  • a circular groove slightly larger than the diameter of the hammer head of the handbrake line;
  • the cylindrical body is provided with a circular groove on one side with a first side groove communicating with the circular groove, and the side of the first side groove away from the circular groove penetrates the side of the cylindrical body.
  • the side facing the square hole port is provided with a second side groove, and the second side groove extends from the middle of the cylinder to the same side surface of the cylinder.
  • the square hole is matched with the column to restrict the connecting piece to only move in the direction of the square hole. Pass the hammer head of the handbrake cable through the square hole from left to right, and insert the hammer head into the circular groove after passing through. The handbrake cable passes through the first side groove and finally snaps into the second side groove, so that the hammer head of the handbrake cable does not Will be separated from the connector.
  • the connecting piece moves, it can stably drive the handbrake cable to tighten the brake.
  • the present invention is further provided that: two opposite side walls of the square hole are formed with guide grooves along the length of the square hole, the same end of the two guide grooves penetrates the protective shell, and the connecting piece further includes a side wall located on the side of the column.
  • the sides of the cable rack and the cable rack are formed with guide blocks that are inserted into the guide grooves.
  • the guide block and the guide groove cooperate to play a guiding role.
  • the guide groove since the guide groove only penetrates the protective shell on one side, the guide block can only penetrate into the guide groove from one side but cannot pass out of the guide groove from the other side, which can limit the cooperation of the guide block and the connecting piece.
  • one end of the protective shell is provided with an internal threaded hole
  • the internal threaded hole is threadedly connected with a brake wire fixing cap
  • the brake wire fixing cap includes a stud threaded with the internal thread hole and a diameter connected to the left end of the stud.
  • the end surface of the operating column is formed with a third groove extending into the stud, and the side of the operating column and the stud are formed with an escape groove communicating with the third groove.
  • the wire cap of the handbrake cable abuts in the third groove, the steel wire core passes through the cable fixing cap through the avoiding groove, and the position of the wire cap of the handbrake cable can be adjusted by adjusting the position of the yarn fixing cap. Position to adjust the tightness of the handbrake cable.
  • the present invention is further provided as follows: a first groove with an arc-shaped bottom surface viewed from the longitudinal section is formed on the underside of the protective case, the diameter of the first groove is equal to the diameter of the handlebar, and the arc length of the groove bottom section is less than 180
  • the fixing assembly includes a lower connecting shell located below the protective shell, a second groove with the same diameter as the first groove is formed on the upper side of the lower connecting shell, and the bottom surface of the second groove is arc-shaped when viewed from the longitudinal section, And the arc is less than 180 degrees;
  • the protective shell is formed with first connecting protrusions at the front and rear positions of the first groove, and each first connecting protrusion is provided with a first threaded hole penetrating through the upper and lower directions, and the lower connecting shell
  • the second connecting protrusions are formed at the front and rear positions of the second groove, and each second connecting protrusion is provided with a through hole that penetrates in the up and down direction.
  • the bolt/screw is thread
  • the protective shell and the lower connecting shell are fixed together by the bolt/screw passing through the through hole and threaded connection with the first threaded hole, so that the protective shell is co-extruded through the first groove and the second groove The handlebar, so that the protective shell is fixed on the handlebar.
  • Another object of the present invention is to provide a bicycle using the above-mentioned brake lever.
  • the brake lever when used, the purpose of achieving a sufficient cable stroke with a short operating stroke can be achieved under the condition of applying a small force, and the brake cable can be tightened with a small force, which is suitable for use by children.
  • the handle is always maintained in the original orientation during the rotation, so that the handle section can be always parallel to the handlebar during the entire rotation , The handle is more comfortable when applying force.
  • Figure 1 is a schematic diagram of the structure of the first embodiment
  • Figure 2 is a schematic cross-sectional view of the first embodiment
  • Figure 3 is a partial structural diagram of the connecting piece and the handbrake assembly in the first embodiment
  • Fig. 4 is a schematic diagram of the structure of the coupling member and the main transmission arm in the second embodiment.
  • a brake lever includes a protective shell 1, a fixing assembly that fits and fixes the protective shell 1 on the handlebar 2, a connector 3 for connecting with the handbrake cable, and a driving connector 3
  • the handbrake assembly 4 that moves in the direction of tightening the handbrake line. It is stipulated that the up, down, left, and right directions of the bicycle brake lever in Figure 1 are the up, down, left, and right directions in the full text.
  • the lower side of the protective shell 1 is formed with a first groove 5 whose bottom surface is arc-shaped when viewed from the longitudinal section.
  • the diameter of the first groove 5 is equal to the diameter of the handlebar, and the arc length of the groove bottom section is smaller than 180 degree.
  • the axis of the first groove 5 is in the left and right direction.
  • the protective shell 1 is formed with first connecting protrusions 6 at the front and rear positions of the first groove 5, and each first connecting protrusion 6 is provided with a vertical penetrating hole. First threaded hole 7.
  • the fixing assembly 2 includes a lower connecting shell 8 located below the protective shell 1, and a second groove 9 with the same diameter as the first groove 5 is formed on the upper side of the lower connecting shell 8.
  • the bottom surface of the second groove 9 is arc-shaped when viewed from the longitudinal section, and the arc is less than 180 degrees.
  • the axial direction of the second groove 9 also faces the left and right direction.
  • the lower connecting shell 8 is formed with second connecting protrusions 10 at the front and rear positions of the second groove 9, and each second connecting protrusion 10 is provided with a flange.
  • the through hole 11 penetrates in the up and down direction.
  • the protective shell 1 and the lower connecting shell 8 are arranged on both sides of the handlebar, and the bolts/screws pass through the through hole 11 and are threadedly connected with the first threaded hole 7 to fix the protective shell 1 on the handlebar.
  • the upper end of the protective shell 1 is formed with a square hole 12 along the left and right directions.
  • the left and right ends of the square hole 12 penetrate the protective shell 1, and the four corners of the inner wall of the square hole 12 are rounded.
  • the front and rear side walls of the square hole 12 are formed with guide grooves 13 along the length of the square hole 12.
  • the guide groove 13 penetrates the protective shell 1 on the right side, and the left end of the guide groove 13 is spaced from the left end of the protective shell 1.
  • a mounting groove 33 communicating with the square hole 12 is opened on the right side of the protective shell 1 at a position below the square hole 12, and the width of the mounting groove 33 is smaller than the width of the square hole 12.
  • the connecting member 3 includes a column 14 whose cross-sectional shape matches the cross-sectional shape of the square hole 12.
  • the front side of the column 14 is provided with a circular groove 15 with a diameter slightly larger than the hammerhead diameter of the handbrake cable.
  • a first side groove 16 is formed on the front side of the column 14 close to the edge of the lower end, and the lower end of the first side groove 16 penetrates the lower side wall of the column 14.
  • the middle part of the left side of the column 14 is formed with a second side groove 17.
  • the second side groove 17 extends from the middle of the left side of the column 14 to a position passing through the lower side.
  • the second side groove 17 and the circular groove 15 and the first side The grooves 16 are all connected.
  • the connecting piece 3 also includes a wire rod 18 formed on the right side of the column 14.
  • the front and rear sides of the wire rod 18 are formed with guide blocks 19 that are inserted into the guide groove 13. Through the cooperation of the guide block 19 and the guide groove 13, the connecting member 3 can only slide in the direction of the square hole 12.
  • the left end of the protective shell 1 is provided with an internal threaded hole 20 at the square hole 12, and a brake wire fixing cap 21 is screwed through the internal threaded hole 20.
  • the brake wire fixing cap 21 includes a stud 22 threadedly fitted with the internal threaded hole 20 and an operating column 23 connected to the left end of the stud 22 with a larger diameter than the stud 22.
  • the left end surface of the operating column 23 is formed with a third groove 24 extending into the stud 22, and the side surfaces of the operating column 23 and the stud 22 are formed with an escape groove 25 communicating with the third groove 24.
  • the wire cap of the handbrake cable abuts in the third groove 24, and the steel wire core passes through the brake wire fixing cap 21 through the escape groove 25.
  • the handbrake assembly 4 includes bar-shaped teeth 26 formed on the lower side of the cable rack 18, a main transmission arm 27 meshing with the bar-shaped teeth 26, a handle 28 connected with the main transmission arm 27, and auxiliary
  • the handle 28 operates the auxiliary support arm 29 that the main transmission arm 27 rotates.
  • the main transmission arm 27 includes a main arm 30 rotatably connected to the protective shell 1 in the mounting slot 33, an extension arm 31 integrally formed on the side of the main arm 30, and an arc-shaped rack connected between the extension arm 31 and the main arm 30 32.
  • the rotation center lines of the main arm 30 and the protective shell 1 are in the front-rear direction.
  • the tooth surface of the arc-shaped rack 32 faces the bar-shaped teeth 26 and meshes with the bar-shaped teeth 26, and the center of the arc-shaped rack 32 coincides with the rotation center line of the main arm 30 and the protective shell 1.
  • the toothed rack 32 and the toothed bar 26 are used as transmission parts.
  • the end of the main arm 30 away from the protective shell 1 is rotatably connected with the left end of the handle 28.
  • the auxiliary support arm 29 is the same length as the main arm 30.
  • the left end of the auxiliary support arm 29 is rotatably connected to the protective case 1, and the connection point is located at the lower right of the connection point between the main arm 30 and the protective case 1.
  • the right end of the auxiliary support arm 29 is connected to the handle 28 Rotate the connection.
  • the rotation center lines of the main arm 30 and the protective shell 1, the handle 28, and the rotation center lines of the auxiliary support arm 29, the protective shell 1, and the handle 28 are all parallel to each other, and the four rotation center lines are respectively located on four points of the parallelogram. .
  • the part of the handle 28 located on the right side of the hinge point is the hand grip section. During the rotation of the main arm 30 and the auxiliary support arm 29, the hand grip section always follows the left and right directions.
  • the main transmission arm 27 and the auxiliary support arm 29 both rotate in a clockwise direction.
  • the arc-shaped rack 32 drives through the bar-shaped teeth 26.
  • the cable gear rod 18 engaged with it moves to the right, so that the hammer head of the handbrake cable moves to the right together, and the handbrake cable tightens the brake.
  • a brake lever differs from the first embodiment only in that a force block 34 is formed on the lower end surface of the cable rack 18, and the main transmission arm 27 includes an integrally formed main arm 30 and an extension arm 31, and A force applying block 35 is formed on the extension arm 31, and the force applying block 35 abuts against the left side surface of the force receiving block 34.
  • a bicycle includes the brake lever described in the first embodiment or the second embodiment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Mechanical Control Devices (AREA)

Abstract

一种刹把及使用该刹把的自行车，刹把包括保护壳（1）、配合固定保护壳（1）的固定组件（2）、用于连接手刹线的连接件（3）和手刹组件（4），手刹组件（4）包括一端与保护壳（1）转动连接的主臂（30），主臂（30）的另一端与把手（28）转动连接，通过对把手（28）施加作用力带动主臂（30）转动，主臂（30）转动时通过传动件带动连接件（3）往拉紧手刹线的方向运动，把手（28）上设有副支撑臂（29），副支撑臂（29）两端与保护壳（1）、把手（28）转动连接。通过对把手（28）施加作用力带动主臂（30）转动，主臂（30）转动时，通过传动件带动连接件（3）向拉紧手刹线的方向运动完成刹车动作。转动时随着把手（28）转动接近车把，主臂（30）与副支撑臂（29）角度变小，杠杆的力臂增大，所需作用力随着变小，能够以儿童小手的力量保持刹车动作。

Description

一种刹把及使用该刹把的自行车 技术领域
本发明涉及自行车的技术领域，尤其是涉及一种刹把及使用该刹把的自行车。
背景技术
目前公知的儿童自行车刹把，普遍采用成人车刹把或是成人车刹把缩小版，由于儿童的手较小，正常起始位状态，儿童是无法正常使用的；若将刹把起始位调节到儿童小手可以操作的位置，则刹把拉线行程短，无法满足需要长拉线行程的刹器。
如授权公告号为CN202609008U的实用新型专利公开了一种儿童自行车刹车把。该方案中就通过螺栓抵住手把，调节手把的初始角度状态，使得手把转过一定的初始角度后与车把的距离缩短，使得儿童用起来更舒适。
上述的现有技术方案存在以下缺陷：其转过一定的初始角度后，虽然缩短了操作行程，但会导致后续手把能转过的最大角度减小，因此刹把拉线行程短、无法满足长拉线行程的问题依然没能够解决。
发明内容
本发明的其中一个目的是提供一种刹把，其优势在于能够以短操作行程达到足够的拉线行程。
本发明的上述发明目的是通过以下技术方案得以实现的：一种刹把，包括保护壳、配合固定保护壳的固定组件、用于连接手刹线的连接件和手刹组件，所述手刹组件包括一端与保护壳转动连接的主臂，主臂的另一端与把手转动连接，通过对把手施加作用力带动主臂转动，主臂转动时通过传动件带动连接件往拉紧手刹线的方向运动，所述把手上设有副支撑臂，所述副支撑臂两端与保护壳、把手转动连接。
通过采用上述技术方案，通过对把手施加作用力带动主臂转动，主臂转动时，通过传动件带动连接件向拉紧手刹线的方向运动完成刹车动作。由于分为主臂和把手两部分，因此仅主臂部分相比较现有技术中的刹车把手的力臂要短得多，因此相同的操作行程下，相比较现有技术中的刹车把手具有更大的旋转角度，旋转角度越大拉线行程越长。通过副支撑臂与保护壳、把手转动连接来辅助支撑把手，使得把手沿确定路径进行移动。当手对把手施加作用力时，把手沿主臂及副支撑臂限定转动路径移动，同时主臂受把手作用力转动并通过传动件将转动转换为直线运动，主臂转动时与副支撑臂配合使把手保持与把手平行的状态，不用预留传统刹把的转动空间，实现方便儿童操作的短距离握距，并能够以较短的操作行程达 到足够的拉线行程。转动时随着把手转动接近车把，主臂与副支撑臂角度变小，杠杆的力臂增大，所需作用力随着变小，能够以儿童小手的力量保持刹车动作。
本发明进一步设置为：所述传动件包括成型在连接件侧面的条形齿以及位于主臂上的圆弧形齿条，条形齿与圆弧形齿条相啮合，且圆弧形齿条的圆心与主臂、保护壳的旋转中心线重合。
通过采用上述技术方案，通过圆弧形齿条与条形齿配合，使得主臂转动时，通过圆弧形齿条带动条形齿移动。由于圆弧形齿条的圆心与主臂、保护壳的旋转中心线重合，因此在主臂转动过程中，圆弧形齿条和旋转中心的距离不会发生变化，因此能够始终啮合在一起。
本发明进一步设置为：所述传动件包括成型在连接件侧面的受力块以及随主臂运动的施力块，主臂转动过程中，施力块与受力块相抵接。
通过采用上述技术方案，通过施力块和受力块配合使得主臂转动的过程中，施力块对受力块施加作用力，受力块与连接件一起向拉紧刹车线的方向运动。
本发明进一步设置为：所述主臂与保护壳、把手的旋转中心线，以及副支撑臂与保护壳、把手的旋转中心线均相互平行，且四根旋转中心线分别位于平行四边形的四个点上；所述把手包括手握段，在主臂、副支撑臂转动的过程中，手握段平行于车把。
通过采用上述技术方案，通过将四个转动连接点设置在平行四边形的四个角上，使得把手在转动的过程中始终维持在原来的朝向状态。因此可以使得手握段在整个转动过程中始终与车把平行，手对手把施加作用力时更加舒适。
本发明进一步设置为：所述副支撑臂和保护壳的连接点位于主臂与保护壳连接点朝向刹车时主臂的旋转方向上，且副支撑臂和保护壳的连接点相比较主臂与保护壳连接点距离车把更近。
通过采用上述技术方案，通过将副支撑臂和保护壳的连接点设置在相比较主臂与保护壳连接点距离车把更近的位置，使得操作主臂旋转刹车的过程中，副支撑臂与保护壳连接点不会成为主臂旋转时的阻碍。可以通过把手操作主臂旋转，直至把手与车把抵接时停止，可以使得主臂有尽可能大的旋转角度。
本发明进一步设置为：所述保护壳上设有两端贯穿的方孔，所述连接件包括穿设于方孔内的柱体，所述柱体朝向方孔侧壁的一侧设有直径略大于手刹线的锤头直径的圆槽；柱体上开设有圆槽一侧开设有与圆槽相连通的第一侧槽，第一侧槽远离圆槽一侧贯穿柱体侧面，柱体面向方孔端口的一侧设有第二侧槽，第二侧槽从柱体中部延伸至贯穿柱体同一侧面位置。
通过采用上述技术方案，通过方孔配合柱体限制连接件仅能够沿方孔方向运动。将 手刹线的锤头从左往右穿过方孔，穿出后将锤头嵌入圆槽内，手刹线通过第一侧槽后最终卡入第二侧槽内，使得手刹线的锤头不会与连接件分离。连接件运动时能够稳定带动手刹线拉紧刹车。
本发明进一步设置为：所述方孔的两个相对侧壁上均成型有沿方孔长度方向的导向槽，两道导向槽同一端贯穿保护壳，所述连接件还包括位于柱体侧面的拉线齿杆，拉线齿杆的侧均成型有卡入导向槽内的导向块。
通过采用上述技术方案，通过导向块与导向槽配合起到导向作用。同时由于导向槽仅单侧贯穿保护壳，因此导向块仅能够从一侧穿入导向槽内而无法从另一侧穿出导向槽，可以对导向块和连接件配合起到限位作用。
本发明进一步设置为：所述保护壳的一端开设有内螺纹孔，内螺纹孔螺纹连接有刹线固定帽，刹线固定帽包括与内螺纹孔螺纹配合的螺柱以及连接于螺柱左端直径大于螺柱的操作柱，操作柱的端面成型有延伸至螺柱内的第三凹槽，操作柱和螺柱的侧面成型有与第三凹槽相连通的避让槽。
通过采用上述技术方案，通过手刹线的线帽抵接在第三凹槽内，钢丝线芯通过避让槽穿过刹线固定帽，通过调节纱线固定帽的位置可以调节手刹线的线帽的位置以调节手刹线松紧。
本发明进一步设置为：所述保护壳的下侧成型有从纵向截面观察底面为弧形的第一凹槽，第一凹槽的直径与车把的直径相等，且槽底截面弧长小于180度；所述固定组件包括位于保护壳下方的下连接壳，下连接壳的上侧成型有直径与第一凹槽相同的第二凹槽，第二凹槽从纵向截面观察底面为弧形，且弧度小于180度；保护壳上于第一凹槽前后侧位置均成型有第一连接凸起，每个第一连接凸起上均开设有上下方向贯通的第一螺纹孔，下连接壳上位于第二凹槽前后侧位置均成型有第二连接凸起，每个第二连接凸起上均开设有沿上下方向贯通的通孔，螺栓/螺钉穿过通孔后与第一螺纹孔螺纹连接。
通过采用上述技术方案，通过螺栓/螺钉穿过通孔与第一螺纹孔螺纹连接来使得保护壳和下连接壳固定在一起，以使得保护壳通过第一凹槽和第二凹槽配合挤压车把，使得保护壳被固定在车把上。
本发明的另一个目的是提供一种使用上述刹把的自行车。
本发明的上述发明目的是通过以下技术方案得以实现的：
通过采用上述技术方案，使用上述刹把时能够在施加较小力的情况下实现以短操作行程达到足够的拉线行程的目的，且能够以较小的力拉紧刹车线，适合儿童使用。
综上所述，本发明的有益技术效果为：
1.手对把手施加作用力时，把手沿确定路径移动才能够顺利带动主臂转动，而手在把手与主臂转动连接处施加作用力经过的位移距离短于现有技术中手握把手刹车时的位移距离，在相同力或者省力的前提下，能够以较短的操作行程达到足够的拉线行程，有利于小孩使用；
2.转动时随着把手转动接近车把，主臂与支撑臂角度变小，杠杆的力臂增大，所需作用力随着变小，能够以儿童小手的力量保持刹车动作；
3.通过将四个转动连接点设置在平行四边形的四个角上，使得把手在转动的过程中始终维持在原来的朝向状态，因此可以使得手握段在整个转动过程中始终与车把平行，手对手把施加作用力时更加舒适。
附图说明
图1是实施例一的结构示意图；
图2是实施例一的剖视示意图；
图3是实施例一中连接件和手刹组件的部分结构示意图；
图4是实施例二中连接件与主传动臂配合的结构示意图。
附图标记：1、保护壳；2、固定组件；3、连接件；4、手刹组件；5、第一凹槽；6、第一连接凸起；7、第一螺纹孔；8、下连接壳；9、第二凹槽；10、第二连接凸起；11、通孔；12、方孔；13、导向槽；14、柱体；15、圆槽；16、第一侧槽；17、第二侧槽；18、拉线齿杆；19、导向块；20、内螺纹孔；21、刹线固定帽；22、螺柱；23、操作柱；24、第三凹槽；25、避让槽；26、条形齿；27、主传动臂；28、把手；29、副支撑臂；30、主臂；31、延伸臂；32、圆弧形齿条；33、安装槽；34、受力块；35、施力块。
具体实施方式
以下结合附图对本发明作进一步详细说明。
实施例一：
如图1和图2所示，一种刹把，包括保护壳1、配合将保护壳1配合固定在车把上的固定组件2、用于与手刹线相连接的连接件3以及带动连接件3往拉紧手刹线方向运动的手刹组件4。规定以图1中自行车刹把的上下左右为全文表述中的上下左右方位，图纸正面为前侧，图纸背面为后侧。
如图1所示，保护壳1的下侧成型有从纵向截面观察底面为弧形的第一凹槽5，第一凹槽5的直径与车把的直径相等，且槽底截面弧长小于180度。第一凹槽5的轴线沿左右方向，保护壳1上于第一凹槽5前后侧位置均成型有第一连接凸起6，每个第一连接凸起6上 均开设有上下方向贯通的第一螺纹孔7。
如图1所示，固定组件2包括位于保护壳1下方的下连接壳8，下连接壳8的上侧成型有直径与第一凹槽5相同的第二凹槽9。第二凹槽9从纵向截面观察底面为弧形，且弧度小于180度。第二凹槽9的轴线方向同样朝向左右方向，下连接壳8上位于第二凹槽9前后侧位置均成型有第二连接凸起10，每个第二连接凸起10上均开设有沿上下方向贯通的通孔11。将保护壳1与下连接壳8设置在车把两侧，螺栓/螺钉穿过通孔11后与第一螺纹孔7螺纹连接将保护壳1固定在车把上。
如图2所示，保护壳1的上端部分沿左右方向成型有方孔12，方孔12的左右两端均贯穿保护壳1，且方孔12内壁的四个拐角处均倒有圆角。方孔12的前后两侧侧壁上均成型有沿方孔12长度方向的导向槽13，导向槽13于右侧贯穿保护壳1，导向槽13的左端与保护壳1的左端留有间距。保护壳1的右侧位于方孔12下方的位置开设有与方孔12相连通的安装槽33，安装槽33的宽度小于方孔12的宽度。
如图2和图3所示，连接件3包括截面形状与方孔12截面形状相吻合的柱体14，柱体14的前侧开设有直径略大于手刹线的锤头直径的圆槽15。柱体14的前侧靠近下端边缘的位置成型有第一侧槽16，第一侧槽16的下端贯穿柱体14下侧壁。柱体14左侧面的中部成型有第二侧槽17，第二侧槽17从柱体14左侧面中部延伸至贯穿下侧面的位置，第二侧槽17与圆槽15、第一侧槽16均相连通。连接件3还包括成型在柱体14右侧面的拉线齿杆18，拉线齿杆18的前后两侧均成型有卡入导向槽13内的导向块19。通过导向块19与导向槽13配合使得连接件3仅能够沿方孔12方向滑动。
如图2和图3所示，将手刹线的锤头从左往右穿过方孔12，穿出后将锤头嵌入圆槽15内，手刹线通过第一侧槽16后最终卡入第二侧槽17内。之后将连接件3穿入方孔12内，沿方孔12滑动至导向块19与导向槽13的左端面抵接的状态。
如图2和图3所示，保护壳1的左端于方孔12处开设有内螺纹孔20，并通过内螺纹孔20螺纹连接有刹线固定帽21。刹线固定帽21包括与内螺纹孔20螺纹配合的螺柱22以及连接于螺柱22左端直径大于螺柱22的操作柱23。操作柱23的左端面成型有延伸至螺柱22内的第三凹槽24，操作柱23和螺柱22的侧面成型有与第三凹槽24相连通的避让槽25。手刹线的线帽抵接在第三凹槽24内，钢丝线芯通过避让槽25穿过刹线固定帽21。
如图2和图3所示，手刹组件4包括成型在拉线齿杆18下侧面的条形齿26、与条形齿26啮合的主传动臂27、与主传动臂27相连的把手28以及辅助把手28操作主传动臂27转动的副支撑臂29。主传动臂27包括于安装槽33内与保护壳1转动连接的主臂30、一体 成型在主臂30侧面的延伸臂31以及连接在延伸臂31和主臂30之间的圆弧形齿条32，主臂30和保护壳1的旋转中心线沿前后方向。圆弧形齿条32的齿面朝向条形齿26并与条形齿26相啮合，且圆弧形齿条32的圆心与主臂30、保护壳1的旋转中心线重合，此时圆弧形齿条32与条形齿26作为传动件。主臂30远离保护壳1的一端与把手28的左端转动连接。副支撑臂29与主臂30等长，副支撑臂29的左端与保护壳1转动连接，且连接点位于主臂30与保护壳1连接点的右下方，副支撑臂29的右端与把手28转动连接。主臂30与保护壳1、把手28的旋转中心线，以及副支撑臂29与保护壳1、把手28的旋转中心线均相互平行，且四根旋转中心线分别位于平行四边形的四个点上。把手28位于铰接点右侧的部分为手握段，在主臂30、副支撑臂29转动的过程中，手握段始终沿左右方向。
具体使用过程：
在对把手28施加向下的作用力时，主传动臂27和副支撑臂29均沿顺时针方向转动，主传动臂27顺指针转动过程中，圆弧形齿条32带动通过条形齿26与其啮合的拉线齿杆18向右运动，使得手刹线的锤头一起向右运动，手刹线拉紧刹车。
实施例二：
如图4所示，一种刹把，和实施例一的区别仅在于拉线齿杆18的下端面成型有受力块34，主传动臂27包括一体成型的主臂30和延伸臂31，且延伸臂31上成型有施力块35，该施力块35与受力块34的左侧面相抵接。
实施例三：
一种自行车，包括实施例一或实施例二所述的刹把。
本具体实施方式的实施例均为本发明的较佳实施例，并非依此限制本发明的保护范围，故：凡依本发明的结构、形状、原理所做的等效变化，均应涵盖于本发明的保护范围之内。

Claims (10)

  1. 一种刹把，包括保护壳(1)、配合固定保护壳(1)的固定组件(2)、用于连接手刹线的连接件(3)和手刹组件(4)，其特征是：所述手刹组件(4)包括一端与保护壳(1)转动连接的主臂(30)，主臂(30)的另一端与把手(28)转动连接，通过对把手(28)施加作用力带动主臂(30)转动，主臂(30)转动时通过传动件带动连接件(3)往拉紧手刹线的方向运动，所述把手(28)上设有副支撑臂(29)，所述副支撑臂(29)两端与保护壳(1)、把手(28)转动连接。
  2. 根据权利要求1所述的刹把，其特征是：所述传动件包括成型在连接件(3)侧面的条形齿(26)以及位于主臂(30)上的圆弧形齿条(32)，条形齿(26)与圆弧形齿条(32)相啮合，且圆弧形齿条(32)的圆心与主臂(30)、保护壳(1)的旋转中心线重合。
  3. 根据权利要求1所述的刹把，其特征是：所述传动件包括成型在连接件(3)侧面的受力块(34)以及随主臂(30)运动的施力块(35)，主臂(30)转动过程中，施力块(35)与受力块(34)相抵接。
  4. 根据权利要求1-3任一项所述的刹把，其特征是：所述主臂(30)与保护壳(1)、把手(28)的旋转中心线，以及副支撑臂(29)与保护壳(1)、把手(28)的旋转中心线均相互平行，且四根旋转中心线分别位于平行四边形的四个点上；所述把手(28)包括手握段，在主臂(30)、副支撑臂(29)转动的过程中，手握段平行于车把。
  5. 根据权利要求4所述的刹把，其特征是：所述副支撑臂(29)和保护壳(1)的连接点位于主臂(30)与保护壳(1)连接点朝向刹车时主臂(30)的旋转方向上，且副支撑臂(29)和保护壳(1)的连接点相比较主臂(30)与保护壳(1)连接点距离车把更近。
  6. 根据权利要求1-3任一项所述的刹把，其特征是：所述保护壳(1)上设有两端贯穿的方孔(12)，所述连接件(3)包括穿设于方孔(12)内的柱体(14)，所述柱体(14)朝向方孔(12)侧壁的一侧设有直径略大于手刹线的锤头直径的圆槽(15)；柱体(14)上开设有圆槽(15)一侧开设有与圆槽(15)相连通的第一侧槽(16)，第一侧槽(16)远离圆槽(15)一侧贯穿柱体(14)侧面，柱体(14)面向方孔(12)端口的一侧设有第二侧槽(17)，第二侧槽(17)从柱体(14)中部延伸至贯穿柱体(14)同一侧面位置。
  7. 根据权利要求6所述的刹把，其特征是：所述方孔(12)的两个相对侧壁上均成型有沿方孔(12)长度方向的导向槽(13)，两道导向槽(13)同一端贯穿保护壳(1)，所述连接件(3)还包括位于柱体(14)侧面的拉线齿杆(18)，拉线齿杆(18)的侧均成型有卡入导向槽(13)内的导向块(19)。
  8. 根据权利要求7所述的刹把，其特征是：所述保护壳(1)的一端开设有内螺纹孔(20)，内螺纹孔(20)螺纹连接有刹线固定帽(21)，刹线固定帽(21)包括与内螺纹孔(20)螺纹配合的螺柱(22)以及连接于螺柱(22)左端直径大于螺柱(22)的操作柱(23)，操作柱(23)的端面成型有延伸至螺柱(22)内的第三凹槽(24)，操作柱(23)和螺柱(22)的侧面成型有与第三凹槽(24)相连通的避让 槽(25)。
  9. 根据权利要求1所述的刹把，其特征是：所述保护壳(1)的下侧成型有从纵向截面观察底面为弧形的第一凹槽(5)，第一凹槽(5)的直径与车把的直径相等，且槽底截面弧长小于180度；所述固定组件(2)包括位于保护壳(1)下方的下连接壳(8)，下连接壳(8)的上侧成型有直径与第一凹槽(5)相同的第二凹槽(9)，第二凹槽(9)从纵向截面观察底面为弧形，且弧度小于180度；保护壳(1)上于第一凹槽(5)前后侧位置均成型有第一连接凸起(6)，每个第一连接凸起(6)上均开设有上下方向贯通的第一螺纹孔(7)，下连接壳(8)上位于第二凹槽(9)前后侧位置均成型有第二连接凸起(10)，每个第二连接凸起(10)上均开设有沿上下方向贯通的通孔(11)，螺栓/螺钉穿过通孔(11)后与第一螺纹孔(7)螺纹连接。
  10. 一种自行车，其特征是：包括权利要求1所述的刹把。
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CN110539840B (zh) 2024-05-24

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