CN211969663U - Brake lever and bicycle using same - Google Patents

Abstract

The utility model relates to a brake lever and use bicycle of this brake lever. The utility model provides a brake lever includes protective housing, fixed subassembly, connects the connecting piece of manual brake line and drives the manual brake subassembly of connecting piece motion, the connecting piece includes rotates the rotatory piece of being connected, connects the brake cable installation piece of manual brake line and connects the extension piece of rotatory piece, brake cable installation piece with the protective housing, the manual brake subassembly includes rotates the manual brake pole of being connected with the protective housing, be equipped with on the manual brake pole with the butt piece of rotatory piece butt, butt piece promotes rotatory piece when the manual brake pole rotates and rotates, and the rotation angle of manual brake pole is less than the rotation angle of connecting piece. The larger the rotation angle of the connecting piece is, the longer the cable pulling stroke of the brake cable pulled by the brake cable mounting block is. The smaller the rotation angle of the handbrake lever, the longer the handbrake lever can be used and the shorter the operating stroke. Therefore, the hand brake rod can be pulled by children in a labor-saving way, and the enough wire pulling stroke can be achieved in a short operation stroke.

Description

Brake lever and bicycle using same

Technical Field

The utility model belongs to the technical field of children's bicycle's technique and specifically relates to a bicycle of brake lever and use this brake lever is related to.

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.

SUMMERY OF THE UTILITY MODEL

To the not enough that prior art exists, one of them purpose of the utility model is to provide a brake lever, its advantage lies in can reaching sufficient stay wire stroke with short operation stroke.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a brake lever, includes protective housing, fixed subassembly, connects the connecting piece of manual brake line and drives the manual brake subassembly of connecting piece motion, the connecting piece includes rotates the brake cable installation piece of being connected rotatory piece, connecting the manual brake line and connects the extension piece of rotatory piece, brake cable installation piece with the protective housing, the manual brake subassembly includes rotates the manual brake pole of being connected with the protective housing, be equipped with the butt piece with rotatory piece butt on the manual brake pole, butt piece promotes rotatory piece and rotates when the manual brake pole rotates, and the rotation angle of manual brake pole is less than the rotation angle of connecting piece.

Through adopting above-mentioned technical scheme, the rotatory piece of in-process butt joint piece promotion through manual brake lever pivoted rotates for brake cable installation piece on the connecting piece strains the brake cable. Because the rotation angle of the hand brake lever is smaller than that of the connecting piece, the larger the rotation angle of the connecting piece is, the longer the cable pulling stroke of the brake cable pulled by the brake cable mounting block is. The smaller the rotation angle of the hand brake lever is, the longer the hand brake lever can be used, and the operation stroke still does not exceed the operation stroke suitable for children. Therefore, the hand brake rod can be pulled by children in a labor-saving way, and the enough wire pulling stroke can be achieved in a short operation stroke.

The present invention may be further configured in a preferred embodiment as: the protective housing has the drain pan of mounting groove and the apron of lid on the drain pan including the shaping, the connecting piece is located the mounting groove, the shaping has the spacing post that is located between connecting piece and the mounting groove lateral wall on the mounting groove bottom surface.

Through adopting above-mentioned technical scheme, protect the connecting piece in the mounting groove, come the rotation angle of cooperation restriction connecting piece through spacing post simultaneously, the extreme position of connecting piece is for the position when connecting piece and spacing post butt.

The present invention may be further configured in a preferred embodiment as: the manual brake assembly further comprises a butt spring piece, the butt spring piece comprises a first elastic section and a second elastic section, the joint of the first elastic section and the second elastic section is located at a position between the limiting column and the adjacent mounting groove side wall, the first elastic section is in butt joint with the mounting groove side wall, and the second elastic section is in butt joint with one side of the reverse rotation block of the manual brake rod.

Through adopting above-mentioned technical scheme, make the butt flexure strip exert the effort to rotatory piece direction to the manual brake pole through the cooperation of first elasticity section and second elasticity section for the manual brake pole butt all the time on rotatory piece and can not be to the direction free rotation of keeping away from rotatory piece. Meanwhile, the abutting elastic piece can play a role in assisting power when the child operates the hand brake rod.

The present invention may be further configured in a preferred embodiment as: the manual brake rod is formed with a groove on one side facing the rotating block, and the abutting block is located on the bottom surface of the groove.

Through adopting above-mentioned technical scheme, dodge rotatory piece through setting up the recess and make the manual brake pole have bigger rotation range for manual brake pole pivoted in-process can not be because manual brake pole and rotatory piece the rotation center department interfere and restrict the manual brake pole and rotate.

The present invention may be further configured in a preferred embodiment as: a through hole communicated with the mounting groove is formed in one side of the protective shell, and a threading hole is formed in the other side of the protective shell; the connecting piece is located the mounting groove, the manual brake pole is rotated with the bottom surface of mounting groove and is connected, the one end that the rotation center was kept away from to the manual brake pole stretches out outside the protective housing from the opening.

Through adopting above-mentioned technical scheme, make the manual brake pole wear out outside the protective housing through setting up the opening. The brake cable passes through the protective shell through the threading hole.

The present invention may be further configured in a preferred embodiment as: one side shaping that the protective housing top is close to the through wires hole has the first groove of dodging that is linked together with through wires hole, mounting groove, and the front side shaping of protective housing has and dodges the groove with the first second of dodging that groove, mounting groove are linked together.

Through adopting above-mentioned technical scheme, during the installation hand brake cable, will connect the tup of connecting on hand brake cable back on brake cable installation piece, the hand brake cable finally blocks into the second side inslot through first side groove back, later the operation hand brake cable dodges the groove through the second and first dodges the position that the groove reachs the through wires hole.

The present invention may be further configured in a preferred embodiment as: the bottom surface of mounting groove has lower butt boss in the cooperation position integrated into one piece of the rotation center of manual brake pole and the rotation center of rotatory piece, and the shaping has first through-hole and the second through-hole that runs through the drain pan down on the butt boss, the apron has just to the last butt boss of lower butt boss towards one side shaping of mounting groove bottom, goes up the butt boss and just has first screw hole and second screw hole to the position shaping of first through-hole and second through-hole, and the bolt passes behind first through-hole, the second through-hole and is connected with first screw hole, second screw hole.

Through adopting above-mentioned technical scheme, through lower butt boss and last butt boss formation thick drain pan and apron structure for bolt and drain pan, apron cooperation department all have better intensity.

The present invention may be further configured in a preferred embodiment as: and a limiting plate abutted with the cover plate is formed on the lower side wall of the mounting groove.

Through adopting above-mentioned technical scheme, support the apron through the limiting plate for the apron can not directly compress tightly on the connecting piece when bolted connection drain pan and apron, but compresses tightly on the limiting plate.

The present invention may be further configured in a preferred embodiment as: the fixing assembly comprises a socket piece fixedly connected with the protective shell and a locking piece fixedly fixed on the handlebar in a deformed and compressed manner; the middle part shaping of cup joint spare has circular shape cup joint hole, and the diameter in cup joint hole slightly is greater than the diameter of handlebar. The front side shaping of cup jointing the piece has and cup joints the fracture that the hole is linked together, and the up end shaping that cup joints the piece and is close to the front side position has square constant head tank, and the bottom shaping of constant head tank has runs through the piece of cup jointing and just to the perforation of fracture, and the retaining member is including embedding the nut in the constant head tank and passing perforation and nut threaded connection's bolt.

By adopting the technical scheme, after the sleeving piece is sleeved on the bicycle handle, the sleeving piece is tightly pressed on the bicycle handle to be fixed through the matching locking of the bolt and the nut. The constant head tank and the cooperation of nut for the nut embedding can't rotate at will after the location, conveniently screws up the bolt.

To the deficiencies of the prior art, another object of the present invention is to provide a bicycle, which is advantageous in that it can be operated by a small child to achieve a sufficient pull wire stroke to make the brake wire tense.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a bicycle comprises the brake handle, and when a hand brake rod rotates, the abutting block pushes the rotating block to rotate so as to tighten a brake cable.

Through adopting above-mentioned technical scheme, use above-mentioned brake lever to make children stimulate the manual brake pole comparatively laborsavingly, reach sufficient stay wire stroke in short operating stroke moreover for the brake cable is taut.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the hand brake rod can be pulled by children in a labor-saving manner, and the enough wire pulling stroke can be achieved within a short operation stroke;

2. make the butt flexure strip exert the effort to rotatory piece direction to the manual brake pole through the cooperation of first elasticity section and second elasticity section for the manual brake pole butt all the time on rotatory piece and can not be to the direction free rotation of keeping away from rotatory piece.

Drawings

FIG. 1 is an exploded view of the first embodiment;

FIG. 2 is a schematic structural diagram of a bottom case according to an embodiment;

FIG. 3 is a schematic structural diagram of a cover plate according to a first embodiment;

FIG. 4 is a schematic structural view of a connector according to a first embodiment;

FIG. 5 is a schematic structural diagram of a bottom case and a handbrake assembly in the first embodiment;

FIG. 6 is a schematic view of the hand brake lever and the connecting member engaged with each other in the first embodiment;

FIG. 7 is a schematic view of the embodiment in a state of pulling the brake cable.

Reference numerals: 1. a protective shell; 2. a fixing assembly; 3. a connecting member; 4. a hand brake assembly; 5. mounting grooves; 6. a bottom case; 7. a cover plate; 8. a port; 9. threading holes; 10. a first avoidance slot; 11. a second avoidance slot; 12. a limiting column; 13. the lower part is connected with the boss; 14. a first through hole; 15. a second through hole; 16. a limiting plate; 17. the upper part is connected with the lug boss; 18. a first threaded hole; 19. a second threaded hole; 20. rotating the block; 21. an extension block; 22. a brake cable mounting block; 23. a circular hole; 24. a first side groove; 25. a second side groove; 26. a hand brake lever; 27. abutting against the spring leaf; 28. a groove; 29. a butting block; 30. a first elastic section; 31. a second elastic section; 32. a socket; 33. a locking member; 34. sleeving a hole; 35. breaking off; 36. positioning a groove; 37. and (6) perforating.

Detailed Description

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

As shown in fig. 1, a brake lever comprises a protective shell 1, a fixing component 2 for fixing the protective shell 1 on a handlebar in a matching manner, a connecting piece 3 for connecting a hand brake cable, and a hand brake component 4 for driving the connecting piece 3 to move in the direction of tensioning the hand brake cable. The vertical and horizontal directions in the full-text expression in fig. 1 are defined, and the side facing the person in fig. 1 is defined as the front in the full-text expression. The directional indication is only used to explain the relative positional relationship, movement, and the like between the respective members in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

As shown in fig. 2 and 3, the protective case 1 includes a bottom case 6 having a mounting groove 5 formed at a front side thereof, and a cover plate 7 covering the front side of the bottom case 6. The left side shaping of protective housing 1 has the opening 8 that is linked together with mounting groove 5, and the right side shaping of protective housing 1 has the through wires hole 9 that is linked together with mounting groove 5. The upper right side shaping of protective housing 1 has the first groove 10 of dodging that is linked together with through wires hole 9, mounting groove 5, and the front side shaping of protective housing 1 has the second that is linked together with first groove 10 of dodging, mounting groove 5 of dodging and dodges groove 11. A limiting column 12 extending forwards is formed at the position, close to the upper right corner, of the bottom surface of the mounting groove 5. The bottom surface of mounting groove 5 is close to the position in the lower right corner integrated into one piece has lower butt boss 13, and the shaping has first through-hole 14 and the second through-hole 15 that runs through drain pan 6 on the lower butt boss 13. A limit plate 16 abutting against the cover plate 7 is formed on the lower side wall of the mounting groove 5. An upper abutting boss 17 facing the lower abutting boss 13 is formed on the rear side surface of the cover plate 7, and a first threaded hole 18 and a second threaded hole 19 are formed in the positions, facing the first through hole 14 and the second through hole 15, of the upper abutting boss 17. The bolt passes through the first through hole 14 and the second through hole 15 and then is connected with the first threaded hole 18 and the second threaded hole 19.

As shown in fig. 4, the connecting member 3 includes a rotating block 20 rotatably connected to the first through hole 14 on the bottom surface of the mounting groove 5 at a coaxial position, and an end of the rotating block 20 away from the rotation connection point extends obliquely upward to the left. An extension block 21 is integrally formed at the upper right corner of the rotation block 20, a brake cable mounting block 22 is integrally formed at the upper right corner of the extension block 21, and the brake cable mounting block 22 is located at the left side of the limit post 12. The extension block 21 has a thickness of only half of the rotation block 20 and the brake cable mounting block 22, and the extension block 21 is connected to a portion of the rotation block 20 near the front side. The front side of the cable mounting block 22 is provided with a round hole 23 penetrating through the cable mounting block 22, and the front side of the cable mounting block 22 near the upper end edge is formed with a first side groove 24 communicated with the round hole 23. A second side groove 25 is formed in the middle of the right side face of the brake cable mounting block 22, and the second side groove 25 is communicated with the round hole 23 and the first side groove 24. During the installation hand brake cable, will connect in the tup on the hand brake cable inserts round hole 23 backward from the past, the hand brake cable is finally gone into the second side inslot 25 through the last card in first side groove 24 back, later the operation hand brake cable through the second dodge groove 11 and the first position of dodging groove 10 and reacing through wires hole 9.

As shown in fig. 5 and 6, the handbrake assembly 4 comprises a handbrake lever 26 which is rotatably connected with the second through hole 15 on the bottom surface of the mounting groove 5 in a coaxial line position and an abutting spring piece 27 which is positioned in the mounting groove 5. The rotary joint of the hand brake lever 26 and the mounting groove 5 is positioned on the right side of the rotary joint of the rotary block 20 and the mounting groove 5. The handbrake lever 26 extends towards the upper left corner in the initial state and extends out of the mounting groove 5 from the through opening 8. A groove 28 for avoiding the rotary block 20 is formed on the lower surface of the handbrake lever 26, and an abutment block 29 which abuts against one end of the rotary block 20 away from the rotation center thereof is formed on the bottom surface of the groove 28. The position where the handbrake lever 26 is matched with the connecting piece 3 is positioned between the extension block 21 and the bottom surface of the mounting groove 5. The abutting spring piece 27 is bent to form a first elastic section 30 and a second elastic section 31, wherein the joint of the first elastic section 30 and the second elastic section 31 is located between the limiting column 12 and the side wall of the adjacent mounting groove 5, the first elastic section 30 extends upwards and abuts against the side wall of the mounting groove 5, and the second elastic section 31 abuts against the upper side face of the hand brake lever 26.

As shown in fig. 6, the fixing assembly 2 includes a socket 32 for being fitted over the handlebar and a locking member 33 for deforming the socket 32 to be pressed against the handlebar. The middle of the socket 32 is formed with a circular socket hole 34, and the diameter of the socket hole 34 is slightly larger than that of the handle bar. The front side of the socket 32 is formed with a break 35 communicating with the socket hole 34. The upper end face of the sleeve joint part 32 close to the front side is formed with a square positioning groove 36, the bottom of the positioning groove 36 is formed with a perforation 37 penetrating through the sleeve joint part 32, and the position of the perforation 37 is opposite to the position of the fracture 35. The locking member 33 includes a nut inserted into the positioning groove 36 and a bolt passing through the through hole 37 from bottom to top to be threadedly engaged with the nut. The distance between the two parallel surfaces of the nut is equal to the width of the positioning groove 36, so that the nut cannot rotate freely after being embedded into the positioning groove 36.

The specific using process is as follows:

when the hand brake lever 26 is pulled, the abutting block 29 abuts against the rotating block 20 and drives the connecting element 3 to rotate counterclockwise, and the connecting element 3 pulls the brake cable to complete the braking action when rotating counterclockwise, as shown in fig. 7. Since the hand brake lever 26 directly operated by the hand is only operated at a small angle in the whole process, the operation stroke is not too long even if the long hand brake lever 26 is used. When the hand brake lever 26 drives the rotating block 20 to rotate until the rotating block 20 is in a horizontal state, the rotating angle of the connecting member 3 is greater than the rotating angle of the hand brake lever 26. It is thus possible to move the cable mounting block 22 by a sufficient cable stroke.

When resetting, loosen hand brake pole 26, the pulling force of brake cable drives connecting piece 3 clockwise rotation and resets to stop when connecting piece 3 and spacing post 12 butt.

Example two:

a bicycle comprises a brake lever as described in the first embodiment, and when a hand brake lever 26 of the brake lever rotates, an abutting block 29 pushes a rotating block 20 to rotate so as to tension a brake cable.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides a brake lever, includes protective housing (1), fixed subassembly (2), connects connecting piece (3) of manual brake line and drives manual brake subassembly (4) of connecting piece (3) motion, characterized by: connecting piece (3) include with protective housing (1) rotate rotatory piece (20) of being connected, connect brake cable installation piece (22) and connect extension piece (21) of rotatory piece (20), brake cable installation piece (22), manual brake subassembly (4) include rotate hand brake pole (26) of being connected with protective housing (1), be equipped with on hand brake pole (26) with butt piece (29) of rotatory piece (20) butt, butt piece (29) promote rotatory piece (20) to rotate when hand brake pole (26) rotate, the rotation angle of hand brake pole (26) is less than the rotation angle of connecting piece (3).

2. The brake lever according to claim 1, wherein: protective housing (1) has drain pan (6) and the apron (7) of lid on drain pan (6) of mounting groove (5) including the shaping, connecting piece (3) are located mounting groove (5), the shaping has spacing post (12) that are located between connecting piece (3) and mounting groove (5) lateral wall on mounting groove (5) bottom surface.

3. The brake lever according to claim 2, wherein: hand brake subassembly (4) still include butt spring leaf (27), and butt spring leaf (27) include first elastic segment (30) and second elastic segment (31), and the junction of first elastic segment (30) and second elastic segment (31) is located the position between spacing post (12) and adjacent mounting groove (5) lateral wall, first elastic segment (30) and mounting groove (5) lateral wall butt, second elastic segment (31) and hand brake pole (26) are the butt of rotatory piece (20) one side dorsad.

4. The brake lever according to claim 1, wherein: the manual brake rod (26) is formed with a groove (28) facing one side of the rotating block (20), and the abutting block (29) is located on the bottom surface of the groove (28).

5. The brake lever according to claim 2, wherein: a through hole (8) communicated with the mounting groove (5) is formed in one side of the protective shell (1), and a threading hole (9) is formed in the other side of the protective shell (1); the hand brake rod (26) is connected with the bottom surface of the mounting groove (5) in a rotating mode, and one end, far away from the rotating center, of the hand brake rod (26) extends out of the protective shell (1) from the through opening (8).

6. The brake lever according to claim 5, wherein: protective housing (1) top is close to one side shaping of through wires hole (9) and has the first groove (10) of dodging that is linked together with through wires hole (9), mounting groove (5), and the front side shaping of protective housing (1) has and dodges groove (11) with the first second of dodging that is linked together of dodging groove (10), mounting groove (5).

7. The brake lever according to claim 2, wherein: the bottom surface of mounting groove (5) is put integrated into one piece in the rotation center of manual brake pole (26) and the cooperation of the rotation center of rotatory piece (20) and is had lower butt boss (13), and the shaping has first through-hole (14) and second through-hole (15) that run through drain pan (6) on lower butt boss (13), apron (7) have just last butt boss (17) to butt boss (13) down towards the one side shaping at the bottom of mounting groove (5), go up butt boss (17) and go up the position shaping just to first through-hole (14) and second through-hole (15) and have first screw hole (18) and second screw hole (19), and the bolt passes behind first through-hole (14), second through-hole (15) and is connected with first screw hole (18), second screw hole (19).

8. The brake lever according to claim 7, wherein: and a limiting plate (16) abutted to the cover plate (7) is formed on the lower side wall of the mounting groove (5).

9. The brake lever according to claim 1, wherein: the fixing assembly (2) comprises a sleeve-joint piece (32) fixedly connected with the protective shell (1) and a locking piece (33) which is fixed on the handlebar in a deformed and pressed manner by the sleeve-joint piece (32); the middle part shaping of cup jointing piece (32) has circular shape and cup joints hole (34), the diameter that cup joints hole (34) slightly is greater than the diameter of handlebar, the front side shaping of cup jointing piece (32) has fracture (35) that are linked together with cup jointing hole (34), cup jointing piece (32) are close to the up end shaping of front side position and have square constant head tank (36), the bottom shaping of constant head tank (36) has and runs through cup jointing piece (32) and just to perforation (37) of fracture (35), retaining member (33) are including embedding the nut in constant head tank (36) and pass perforation (37) and nut threaded connection's bolt.

10. A bicycle is characterized in that: comprising a brake lever according to any of claims 1-9, wherein the brake cable is tensioned by the rotation of the hand brake lever (26) which pushes the rotary block (20) to rotate against the abutment block (29).

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