阅读说明：本技术 一种刹把及使用该刹把的自行车 (Brake lever and bicycle using same ) 是由 晁志伟 王一雄 于 2019-08-27 设计创作，主要内容包括：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。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,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,把手上设有副支撑臂,副支撑臂两端与保护壳、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向拉紧手刹线的方向运动完成刹车动作。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。(the invention relates to the technical field of bicycles, in particular to a brake lever and a bicycle using the same. The utility model provides a brake lever, including the protective housing, the fixed subassembly of the fixed protective housing of cooperation, a connecting piece and the manual brake subassembly for connecting hand brake cable, the manual brake subassembly includes that one end and protective housing rotate the main arm of being connected, the other end and the handle of main arm rotate to be connected, through applying the effort to the handle and drive the main arm and rotate, the main arm drives the direction motion of connecting piece toward taut hand brake cable through the driving medium when rotating, be equipped with vice support arm on hand, vice support arm both ends and protective housing, the handle rotates to be connected. The main arm is driven to rotate by applying acting force to the handle, and when the main arm rotates, the connecting piece is driven by the transmission piece to move in the direction of tensioning the hand brake cable to complete braking action. When the handle rotates to be close to the handlebar, the angle between the main arm and the auxiliary supporting arm is reduced, the force arm of the lever is increased, the required acting force is reduced, and the braking action can be kept by the force of the small hand of a child.)

1. the utility model provides a brake lever, includes fixed subassembly (2) of protective housing (1), the fixed protective housing of cooperation (1), is used for connecting piece (3) and manual brake subassembly (4) of hand brake cable, characterized by: hand brake subassembly (4) include that one end and protective housing (1) rotate main arm (30) of being connected, and the other end and handle (28) of main arm (30) rotate to be connected, drive main arm (30) and rotate through applying effort to handle (28), and main arm (30) drive connecting piece (3) through the driving medium when rotating and move toward the direction of taut hand brake cable, be equipped with vice support arm (29) on handle (28), vice support arm (29) both ends rotate with protective housing (1), handle (28) and are connected.

2. The brake lever according to claim 1, wherein: the transmission piece comprises strip-shaped teeth (26) formed on the side face of the connecting piece (3) and a circular arc-shaped rack (32) located on the main arm (30), the strip-shaped teeth (26) are meshed with the circular arc-shaped rack (32), and the circle center of the circular arc-shaped rack (32) is superposed with the rotating center lines of the main arm (30) and the protective shell (1).

3. the brake lever according to claim 1, wherein: the transmission piece comprises a stress block (34) formed on the side surface of the connecting piece (3) and a force application block (35) moving along with the main arm (30), and the force application block (35) is abutted against the stress block (34) in the rotating process of the main arm (30).

4. a brake lever according to any of claims 1 to 3, wherein: the main arm (30) is parallel to the rotation center lines of the protective shell (1) and the handle (28), and the auxiliary supporting arm (29) is parallel to the rotation center lines of the protective shell (1) and the handle (28), and the four rotation center lines are respectively positioned on four points of a parallelogram; the handle (28) comprises a hand-holding section which is parallel to the handlebar in the rotating process of the main arm (30) and the auxiliary supporting arm (29).

5. The brake lever according to claim 4, wherein: the connecting point of the auxiliary supporting arm (29) and the protective shell (1) is located in the rotating direction of the main arm (30) when the connecting point of the main arm (30) and the protective shell (1) faces the brake, and compared with the connecting point of the auxiliary supporting arm (29) and the protective shell (1), the connecting point of the main arm (30) and the protective shell (1) is closer to a handlebar.

6. A brake lever according to any of claims 1 to 3, wherein: a square hole (12) with two ends penetrating is formed in the protective shell (1), the connecting piece (3) comprises a cylinder (14) penetrating in the square hole (12), and a circular groove (15) with the diameter slightly larger than that of a hammer head of the hand brake cable is formed in one side, facing the side wall of the square hole (12), of the cylinder (14); the cylinder (14) is provided with a circular groove (15), one side of the circular groove (15) is provided with a first side groove (16) communicated with the circular groove (15), one side of the first side groove (16) far away from the circular groove (15) penetrates through the side face of the cylinder (14), one side of the cylinder (14) facing the port of the square hole (12) is provided with a second side groove (17), and the second side groove (17) extends to the position of the same side face of the cylinder (14) from the middle of the cylinder (14).

7. the brake lever according to claim 6, wherein: all the shaping has guide way (13) along square hole (12) length direction on two relative lateral walls of square hole (12), and protective housing (1) is run through with the end in twice guide way (13), connecting piece (3) are still including being located cylinder (14) side stay wire ratch (18), and the side of stay wire ratch (18) all the shaping has guide block (19) of card income guide way (13).

8. the brake lever according to claim 7, wherein: internal thread hole (20) have been seted up to the one end of protective housing (1), internal thread hole (20) threaded connection has brake cable locking cap (21), brake cable locking cap (21) include with internal thread hole (20) screw-thread fit's double-screw bolt (22) and connect in operation post (23) that double-screw bolt (22) left end diameter is greater than double-screw bolt (22), the terminal surface shaping of operation post (23) has third recess (24) that extend to in double-screw bolt (22), the side shaping of operation post (23) and double-screw bolt (22) has dodges groove (25) that are linked together with third recess (24).

9. The brake lever according to claim 1, wherein: a first groove (5) with an arc-shaped bottom surface is formed in the lower side of the protective shell (1) when the bottom surface of the protective shell is observed from a longitudinal section, the diameter of the first groove (5) is equal to that of a handlebar, and the arc length of the section of the bottom of the groove is less than 180 degrees; the fixing assembly (2) comprises a lower connecting shell (8) positioned below the protective shell (1), a second groove (9) with the same diameter as that of the first groove (5) is formed in the upper side of the lower connecting shell (8), the bottom surface of the second groove (9) is arc when viewed from the longitudinal section, and the radian is smaller than 180 degrees; all shaping in first recess (5) front and back side position has first connection arch (6) on protective housing (1), first screw hole (7) that the direction link up about all seting up on every first connection arch (6), it has second connection arch (10) to lie in second recess (9) front and back side position and all shaping on lower connection shell (8), all set up on every second connection arch (10) along through-hole (11) that the direction link up from top to bottom, bolt/screw pass behind through-hole (11) with first screw hole (7) threaded connection.

10. A bicycle is characterized in that: comprising a brake lever according to claim 1.

Technical Field

The invention relates to the technical field of bicycles, in particular to a brake lever and a bicycle using the same.

Background

The existing well-known child bicycle brake crank generally adopts an adult bicycle brake crank or a reduced version of the adult bicycle brake crank, and the child cannot normally use the brake crank due to the fact that the hand of the child is small and the child is in a normal starting position state; if the starting position of the brake crank is adjusted to the position which can be operated by the small hand of a child, the brake crank is short in stay wire stroke, and the requirement for a brake with a long stay wire stroke cannot be met.

For example, the utility model with the publication number of CN202609008U discloses a brake handle for children bicycle. Just support the hand (hold) through the bolt among this scheme, adjust the initial angle state of hand (hold) for the distance of hand (hold) and handlebar shortens after rotating certain initial angle, makes children use more comfortablely.

The above prior art solution has the following drawbacks: after the brake lever rotates by a certain initial angle, although the operation stroke is shortened, the maximum angle which can be rotated by a subsequent handle is reduced, so that the problem that the brake lever has a short stay wire stroke and cannot meet the requirement of a long stay wire stroke still cannot be solved.

Disclosure of Invention

One of the objects of the present invention is to provide a brake lever which is advantageous in that a sufficient pull-up stroke can be achieved with a short operating stroke.

The above object of the present invention is achieved by the following technical solutions: the utility model provides a brake lever, includes fixed subassembly, the connecting piece and the manual brake subassembly that are used for connecting the hand brake cable of the fixed protective housing of protective housing, cooperation, the manual brake subassembly includes that one end and protective housing rotate the main arm of being connected, and the other end and the handle of main arm rotate to be connected, drive the main arm rotation through exerting the effort to the handle, and the main arm drives the direction motion of connecting piece toward taut hand brake cable through the driving medium when rotating, be equipped with vice support arm on hand, vice support arm both ends are rotated with protective housing, handle and are connected.

Through adopting above-mentioned technical scheme, drive the main arm and rotate through applying the effort to the handle, when the main arm rotates, drive the connecting piece through the driving medium and accomplish the braking action to the direction motion of taut hand brake cable. Due to the fact that the main arm portion and the handle portion are divided, only the main arm portion is much shorter than the force arm of the brake handle in the prior art, and therefore under the same operation stroke, the brake handle has a larger rotation angle compared with the brake handle in the prior art, and the larger the rotation angle is, the longer the cable pulling stroke is. The auxiliary supporting arm is rotatably connected with the protective shell and the handle to assist in supporting the handle, so that the handle moves along a determined path. When the handle exerts the effort to the handle, the handle is injectd the rotation path and is removed along main arm and vice support arm, and the main arm receives the rotation of handle effort and converts the rotation into rectilinear motion through the driving medium simultaneously, and the main arm cooperates with vice support arm when rotating and makes the handle keep the state parallel with the handle, need not reserve the rotation space of traditional brake lever, realizes making things convenient for children's operation's short distance to hold the distance, and can reach sufficient line drawing stroke with shorter operation stroke. When the handle rotates to be close to the handlebar, the angle between the main arm and the auxiliary supporting arm is reduced, the force arm of the lever is increased, the required acting force is reduced, and the braking action can be kept by the force of the small hand of a child.

The invention is further configured to: the transmission part comprises a strip-shaped tooth formed on the side surface of the connecting part and an arc-shaped rack positioned on the main arm, the strip-shaped tooth is meshed with the arc-shaped rack, and the circle center of the arc-shaped rack is superposed with the rotation center lines of the main arm and the protective shell.

By adopting the technical scheme, the arc-shaped rack is matched with the strip-shaped teeth, so that when the main arm rotates, the strip-shaped teeth are driven to move by the arc-shaped rack. Because the circle center of the arc-shaped rack coincides with the rotating center lines of the main arm and the protective shell, the distance between the arc-shaped rack and the rotating center cannot be changed in the rotating process of the main arm, and therefore the arc-shaped rack and the rotating center can be meshed together all the time.

The invention is further configured to: the transmission part comprises a stress block formed on the side surface of the connecting part and a force application block moving along with the main arm, and the force application block is abutted against the stress block in the rotation process of the main arm.

By adopting the technical scheme, in the process that the main arm rotates through the matching of the force application block and the stress block, the force application block applies acting force to the stress block, and the stress block and the connecting piece move together in the direction of tensioning the brake cable.

the invention is further configured to: the rotation center lines of the main arm, the protective shell and the handle, and the rotation center lines of the auxiliary supporting arm, the protective shell and the handle are all parallel to each other, and the four rotation center lines are respectively positioned on four points of a parallelogram; the handle comprises a hand-holding section, and the hand-holding section is parallel to the handlebar in the rotating process of the main arm and the auxiliary supporting arm.

Through adopting above-mentioned technical scheme, through setting up four rotation connection points on parallelogram's four angles for the handle remains at original orientation state throughout at the pivoted in-process. Therefore, the hand-holding section is always parallel to the handlebar in the whole rotating process, and the hand is more comfortable when acting force is applied to the handlebar.

The invention is further configured to: the main arm is connected with the protective housing through the auxiliary supporting arm, the protective housing is connected with the main arm through the auxiliary supporting arm, and the auxiliary supporting arm is connected with the protective housing through the auxiliary supporting arm.

Through adopting above-mentioned technical scheme, the tie point setting through with vice support arm and protective housing is comparing the main arm and the position that the protective housing tie point is more close from the handlebar for the in-process of the rotatory brake of operation main arm, vice support arm and protective housing tie point can not become the hindrance when main arm is rotatory. The main arm can be rotated by operating the handle until the handle stops when abutting against the handlebar, so that the main arm can have the rotation angle as large as possible.

The invention is further configured to: the protective shell is provided with a square hole with two ends penetrating through, the connecting piece comprises a cylinder body penetrating through the square hole, and one side of the cylinder body facing the side wall of the square hole is provided with a circular groove with the diameter slightly larger than that of the hammer head of the hand brake cable; set up circular slot one side on the cylinder and set up the first side groove that is linked together with the circular slot, first side groove is kept away from circular slot one side and is run through the cylinder side, and the cylinder is equipped with the second side groove towards one side of square hole port, and the second side groove extends to and runs through the same side position of cylinder from the cylinder middle part.

Through adopting above-mentioned technical scheme, restrict the connecting piece through square hole cooperation cylinder and only can follow the motion of square hole direction. Turn right from a left side with the tup of hand brake line and pass the square hole, wear out the back with tup embedding circular slot in, the second side inslot is gone into to final card after the hand brake line passes through first side groove, makes the tup of hand brake line can not separate with the connecting piece. The connecting piece can be stably driven to tighten the brake when moving.

The invention is further configured to: all the shaping has the guide way along square hole length direction on two relative lateral walls of square hole, and the protective housing is run through with the one end in twice guide way, the connecting piece still including the line of acting as go-between ratch that is located the cylinder side, the side of the ratch of acting as go-between all the shaping has the guide block of card income guide way.

Through adopting above-mentioned technical scheme, play the guide effect through guide block and guide way cooperation. Meanwhile, only one side of the guide groove penetrates through the protective shell, so that the guide block can only penetrate into the guide groove from one side and cannot penetrate out of the guide groove from the other side, and the guide block and the connecting piece can be matched to play a limiting role.

The invention is further configured to: the internal thread hole has been seted up to the one end of protective housing, and internal thread hole threaded connection has the brake cable locking cap, and the brake cable locking cap includes the double-screw bolt with internal thread hole screw-thread fit and connects in the operation post that double-screw bolt left end diameter is greater than the double-screw bolt, and the terminal surface shaping of operation post has the third recess that extends to in the double-screw bolt, and the side shaping of operation post and double-screw bolt has the groove of dodging that is linked together with the third recess.

Through adopting above-mentioned technical scheme, through the line cap butt of manual brake line in the third recess, the steel wire sinle silk passes the brake line locking cap through dodging the groove, can adjust the position of the line cap of manual brake line in order to adjust the manual brake line elasticity through the position of adjusting the yarn locking cap.

The invention is further configured to: a first groove with an arc-shaped bottom surface is formed on the lower side of the protective shell when the bottom surface of the protective shell is observed from the longitudinal section, the diameter of the first groove is equal to that of a handlebar, and the arc length of the section of the bottom of the groove is less than 180 degrees; the fixing assembly comprises a lower connecting shell positioned below the protective shell, a second groove with the same diameter as the first groove is formed in the upper side of the lower connecting shell, the bottom surface of the second groove is arc-shaped when viewed from the longitudinal section, and the radian is smaller than 180 degrees; first connecting bulges are formed at the front side and the rear side of the first groove on the protective shell, first threaded holes which are communicated in the up-down direction are formed in each first connecting bulge, second connecting bulges are formed at the front side and the rear side of the second groove on the lower connecting shell, through holes which are communicated in the up-down direction are formed in each second connecting bulge, and bolts/screws are connected with the first threaded holes in a threaded mode after penetrating through the through holes.

through adopting above-mentioned technical scheme, pass through the through-hole through bolt/screw and first screw hole threaded connection and make protective housing and lower connecting shell fixed together to make the protective housing extrude the handlebar through first recess and the cooperation of second recess, make the protective housing fixed on the handlebar.

Another object of the present invention is to provide a bicycle using the above mentioned brake lever.

The above object of the present invention is achieved by the following technical solutions:

Through adopting above-mentioned technical scheme, can realize reaching the purpose of sufficient stay wire stroke with short operating stroke under the circumstances of exerting less power when using above-mentioned brake lever, and can strain the brake cable with less power, be fit for children and use.

In conclusion, the beneficial technical effects of the invention are as follows:

1. when the handle applies acting force to the handle, the handle moves along a determined path to smoothly drive the main arm to rotate, and the displacement distance of the acting force applied by the handle at the rotating connection part of the handle and the main arm is shorter than that of the handle in the prior art when a hand brake is held by a hand, so that the wire pulling stroke can be enough by a short operation stroke on the premise of the same force or labor saving, and the wire pulling stroke is favorable for children to use;

2. When the brake lever rotates, the angle between the main arm and the supporting arm is reduced along with the rotation of the handle to be close to the handlebar, the force arm of the lever is increased, the required acting force is reduced along with the reduction of the angle, and the brake action can be kept by the force of a small hand of a child;

3. through rotating four tie points and setting on four angles of parallelogram for the handle remains at original orientation state throughout at the pivoted in-process, consequently can make the section of holding rotate the in-process throughout with the handlebar parallel, and is more comfortable when the hand applys the effort to the handle.

Drawings

FIG. 1 is a schematic structural diagram of the first embodiment;

FIG. 2 is a schematic cross-sectional view of the first embodiment;

FIG. 3 is a schematic view of a portion of the structure of the coupling and handbrake assembly in accordance with one embodiment;

FIG. 4 is a schematic view of the structure of the connecting member and the main driving arm in the second embodiment.

Reference numerals: 1. a protective shell; 2. a fixing assembly; 3. a connecting member; 4. a hand brake assembly; 5. a first groove; 6. a first connecting projection; 7. a first threaded hole; 8. a lower connecting shell; 9. a second groove; 10. a second connecting projection; 11. a through hole; 12. a square hole; 13. a guide groove; 14. a cylinder; 15. a circular groove; 16. a first side groove; 17. a second side groove; 18. a wire pulling toothed bar; 19. a guide block; 20. an internally threaded bore; 21. a brake cable fixing cap; 22. a stud; 23. an operating column; 24. a third groove; 25. an avoidance groove; 26. a bar-shaped tooth; 27. a main drive arm; 28. a handle; 29. a secondary support arm; 30. a main arm; 31. an extension arm; 32. a circular arc-shaped rack; 33. mounting grooves; 34. a stress block; 35. and a force application block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.