JP4464648B2 - Interlocking brake device for small vehicles - Google Patents

Description

  The present invention relates to an interlocking brake device for a small vehicle, and in particular, operates in conjunction with first and second wheel brakes, a first brake operating member for operating the first wheel brakes, and first and second wheel brakes. The present invention relates to an interlocking brake device for a small vehicle including a second brake operation member that can be damped.

One of a pair of brake levers provided on the steering handle of the bicycle is connected to an interlocking link supported by a pair of brake cables connected to a front wheel and a rear wheel brake so as to be swingable. An interlocking brake device is already known from Patent Document 1 in which the other of the levers is connected to the interlocking link so that the interlocking link can be driven to swing according to the brake operation.
Japanese Patent Laid-Open No. 5-16862

  In the above conventional one, when either one of the brake levers is braked, the front wheel and the rear wheel brake are immediately interlocked with each other at a certain distribution ratio provided in the interlocking link. In some cases, it is desirable to appropriately distribute the brake operation of the pair of wheels by the driver's brake operation force.

  The present invention has been made in view of such circumstances, and provides a small vehicle interlocking brake device capable of appropriately distributing the brake operation of a pair of wheels by a brake operation force of a brake operation member with a compact configuration. The purpose is to provide.

In order to achieve the above object, the first aspect of the invention relates to the first and second wheel brakes, the first brake operating member for operating the first wheel brakes, and the first and second wheel brakes in conjunction with each other. And a second brake operating member that can be operated in a small vehicle, wherein the first outer holding portion and the first inner connecting portion are integrally provided and spring-biased to the inoperative position side. The interlocking member, the second inner connecting portion, and the operation force transmitting member integrally including a second outer holding portion facing the first inner connecting portion from the side opposite to the non-operating position are the first inner connecting portion. And a first brake cable arranged so as to be relatively operable so that the second outer holding portion can be moved closer to and away from the first outer wheel brake, and is connected to the first wheel brake. An end portion of the outer cable provided is held by the first outer holding portion, an inner cable of the first brake cable is connected to the first brake operation member, and an end portion of the outer cable provided in the operation cable connected to the second brake operation member is It is held by the second outer holding portion, and the inner cable of the operation cable is connected to the first inner connecting portion so as to exert a pulling force in the operating direction on the interlocking member according to the brake operation of the second brake operation member. The end portion of the inner cable provided in the second brake cable connected to the second wheel brake is connected to the second inner connecting portion .

According to a second aspect of the invention, in addition to the configuration of the first aspect of the invention, the second brake operation is performed in order to maintain the brake operation state of the second wheel brake according to the operation of the second brake operation member. A lock member that can be operated to a position that engages with the operation force transmission member that is in the state of being operated close to the interlocking member side according to the operation of the member can be operated relative to the interlocking member and the operation force transmission member. In response to a re-operation of the second brake operation member with a stronger force, the operation force transmission member engages with the operation force transmission member in response to the operation closer to the interlocking member side. The lock member is spring-biased on the release side .

Further , the invention according to claim 3 enables the first and second wheel brakes, the first brake operation member for operating the first wheel brakes, and the first and second wheel brakes to be operated in conjunction with each other. In the small vehicle interlocking brake device including the second brake operation member, a cylinder body of a master cylinder connected to the first wheel brake via a pipe line is attached to the steering handle, and the first brake operation member; A knocker provided with a step portion that abuts the piston of the master cylinder and abuts the first brake operation member on a substantially half portion so as to operate to press the piston in response to an operation of the first brake operation member. And an outer holding portion and a pressing arm portion that can come into contact with substantially the remaining half of the stepped portion and are spring-biased toward the non-actuated position side. An interlocking member is rotatably supported on the cylinder body via a common support shaft, and an operating force transmission member having an inner connecting portion facing the outer holding portion from the side opposite to the non-operating position, The outer holding end and the inner connecting portion can be moved closer to and away from each other, and are rotatably supported by the cylinder body. The outer holding end of the outer cable provided in the brake cable connected to the second wheel brake is provided on the outer holding portion. parts is held, the brake cable Lee emissions toner cable is connected to the inner connecting portion, the inner cable of the control cable connecting to the second brake operating member, said inner connection portion in accordance with a brake operation of the second brake operating member The operating force transmitting member is actuated so that the operating force transmitting member is actuated to the side separating the outer holding portion It characterized in that it is coupled to reach member.

According to the first aspect of the present invention, when the second brake operation member is braked, the traction force acting on the inner cable of the operation cable connected to the second brake operation member acts on the interlocking member in its operating direction. When the brake operating force of the second brake operating member is smaller than the spring biasing force biasing the interlocking member toward the non-operating position, the interlocking member is stationary at the non-operating position, and the outer cable included in the operation cable As a result of the reaction force acting on the operating force transmission member, the operating force transmission member operates close to the interlocking member, and the traction force acts on the inner cable of the second brake cable connected to the second wheel brake from the operating force transmission member. Only the second wheel brake is braked. Further, when the brake operating force of the second brake operating member exceeds the spring biasing force that biases the interlocking member, the interlocking member operates from the non-actuated position, and therefore the outer cable of the first brake cable connected to the first wheel brake. Is pushed by the interlocking member, and the traction force acts on the inner cable of the first brake cable, so that the first wheel brake is braked, and the first and second wheel brakes are interlocked to operate the brake. Can do. In this way, the interlocking member and the operating force transmission member are disposed so as to be capable of relative operation, and the brake operation force by the second brake operation member is applied to the second wheel brake via the operation force transmission member, and is also applied to the interlocking member. By doing so, the interlocking member and the operating force transmission member can be compactly disposed in the vicinity of the first brake operating member. That is, by adjusting the spring urging force that urges the interlocking member toward the non-operating position, it is possible to optimally set the brake operation force when the first and second wheel brakes are interlocked, while the second It is possible to switch between the single brake state and the interlocked brake state by the brake operation force of the brake operation member.

According to the second aspect of the present invention, when the operation force transmission member is rotated to the interlocking member side by operating the second brake operation member, the lock member is operated and engaged with the operation force transmission member. As a result, the brake operating state of the second wheel brake is maintained, and the small vehicle enters the parking brake state. Further, by strongly operating the second brake operation member again, the engagement state of the operation force transmission member to the lock member is released, the lock member returns to the non-operating state, and the parking brake state is released. become.

Further, according to the invention of claim 3, wherein, when operating the first brake operating member, the master by knocker the pressing force to the knocker from the stepped portion where the first brake operating member is in contact with a substantially half portion acts cylinder The piston is pressed, and the hydraulic pressure from the master cylinder acts on the first wheel brake via the conduit, and the first wheel brake is braked. On the other hand, when the brake operation is performed on the second brake operation member, the operation force transmission member separates the inner connecting portion from the outer holding portion of the interlocking member by the traction force acting on the inner cable of the operation cable connected to the second brake operation member. The second wheel brake is braked by the traction force acting on the inner cable of the brake cable connected to the second wheel brake. At this time, the reaction force from the outer cable of the brake cable acts on the interlocking member in the operating direction, but the reaction force is more than the spring force urging the interlocking member toward the non-operation position side. When it is small, the interlocking member remains stationary at the non-operating position, and the first wheel brake is not braked. Further, when the brake operating force of the second brake operating member increases and the reaction force of the brake cable from the outer cable exceeds the spring biasing force, the interlocking member operates from the non-operating position, so the remaining half of the stepped portion Since the pressing force acts on the knocker from the portion, the first wheel brake is braked, and the first and second wheel brakes can be operated in conjunction with each other. In this way, the interlocking member and the operating force transmission member are disposed so as to be capable of relative operation, and the brake operation force by the second brake operation member is applied to the second wheel brake via the operation force transmission member, and is also applied to the interlocking member. By doing so, the interlocking member and the operating force transmission member can be compactly disposed in the vicinity of the first brake operating member. In addition, since the first brake operation member, the knocker and the interlocking member are rotatably supported by the common cylinder on the cylinder body of the master cylinder, the first brake operation member, the knocker and the knocker The interlocking members can be arranged in a more compact manner.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.

  1 to 10 show a first embodiment of the present invention. FIG. 1 is a diagram showing the overall configuration of the interlocking brake device, FIG. 2 is an enlarged plan view near the right brake lever, and FIG. FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 2, FIG. 5 is a plan view showing the relative arrangement of the right brake lever and the interlocking member in a non-brake operation state, and FIG. 6 is a non-brake operation state. FIG. 7 is a cross-sectional plan view showing the relative arrangement of the interlocking member and the operating force transmission member along line 6-6 in FIG. 3, FIG. 7 is a plan view corresponding to FIG. 5 with the right brake lever operated, and FIG. Is a cross-sectional plan view corresponding to FIG. 6 when the left brake lever is operated with a small brake operation force, FIG. 9 is a cross-sectional plan view corresponding to FIG. 8 when the left brake lever is operated with a large brake operation force, FIG. Is the operating force transmission member in the parking brake state and Tsu is a cross-sectional plan view showing along line 10-10 of FIG. 3 the relative arrangement of the click member.

  First, in FIG. 1, a right grip 22 and a right holder 23 are attached to the right end portion of a steering handle 21 provided in a small vehicle such as a scooter type motorcycle, a tricycle, or a bicycle, and the right grip 22 is gripped. A right brake lever 24 as a first brake operation member that can be operated with the right hand is pivotally supported by the right holder 23. A left grip 25 and a left holder 26 are attached to the left end portion of the steering handle 21, and a left brake lever 27 as a second brake operation member that can be operated with the left hand holding the left grip 25 is left. The holder 26 is pivotally supported.

  On the other hand, the first wheel brake B1, which is a drum brake, is mounted on the front wheels, and the second wheel brake B2, which is a drum brake, is mounted on the rear wheels. Both wheel brakes B 1 and B 2 have operating levers 30 and 31 that are biased counterclockwise in FIG. 1 by springs 28 and 29, and these operating levers 30 and 31 are provided with springs 28 and 29 as springs. The brake is actuated in response to the input of the force that rotates clockwise in FIG. 1 against the force.

  2 to 6, the right holder 23 is integrally provided with a pair of support portions 32 and 33 projecting forward at positions spaced apart vertically, and the upper support portion 32. The sliding plate 34 is interposed between the base portion of the right brake lever 24 that is in sliding contact with the base portion of the right brake lever 24 and the interlocking member 35 that is positioned below the right brake lever 24 and the lower support portion 33. A lock member 36 and a torsion spring 37 disposed between the interlocking member 35 and the lock member 36 are disposed between the support portions 32 and 33, and one end of the torsion spring 37 abuts and engages with the right holder 23. The other end of the torsion spring 37 is brought into contact with and engaged with the lock member 36.

  Each of the support portions 32 and 33 includes a support shaft 38 having an enlarged diameter head portion 38 a at one end that contacts and engages with the outer surface of the upper support portion 32, and the upper support portion 32 and the right brake lever 24. The base, the sliding plate 34 and the base of the interlocking member 35 are inserted and screwed into the lower support 33, and the lock nut 39 is screwed into the other end of the support shaft 38 protruding from the lower support 33. . Thus, by tightening the lock nut 39, the support shaft 38 is fixedly mounted between the support portions 32, 33, and the base portion of the right brake lever 24, the interlocking member 35 and the lock member 36 are common. The support shaft 38 is supported so as to be rotatable.

  The interlocking member 35 is connected to the first wheel brake B1 so that the brake force corresponding to the amount of operation is exerted on the first wheel brake B1 when operating from the non-operating position shown in FIGS. There is an arm portion 35 a that is rotatably supported by the support shaft 38 and is disposed adjacent to the right brake lever 24, and so as to go around the support portion 32 side on the inner side of the base portion of the right brake lever 24. And a spring receiving portion 35b that is integrally connected to the arm portion 35a. The spring receiving portion 35b can be rotated counterclockwise in FIGS. 2 and 6 from the non-operating position. Will be.

  Further, the interlocking member 35 extends in the clockwise direction of FIGS. 2 and 6, that is, in the non-operating direction, between the spring receiving projection 23 a that is integrally provided on the right holder 23 so as to face the spring receiving portion 35 b and the spring receiving portion 35 b. The coil-like spring 40 for biasing the spring is contracted, and the regulating protrusion 35c provided integrally with the arm portion 35a of the interlocking member 35 comes into contact with the right holder 23, whereby the interlocking member 35 is moved to the non-operating position side. Pressed against. Moreover, in a state where the interlocking member 35 is in the non-operating position, the right brake lever 24 in the non-operating state is in contact with the spring receiving portion 35b from the side opposite to the spring 40.

  A cylindrical first outer holding portion 35d extending to the opposite side of the right brake lever 24 is integrally provided in the spring receiving portion 35b of the interlocking member 35 at a side position of the spring 40, and the first wheel brake B1. The end portion of the first outer cable 43 provided in the first brake cable 41 connected to the first outer cable 43 is fitted and held in the first outer holding portion 35d, and the end portion of the first inner cable 42 provided in the first brake cable 41 is the first portion. It protrudes from the outer holding part 35d and is connected to the right brake lever 24.

  Thus, when the right brake lever 24 is operated alone to operate the first wheel brake B1, the interlocking member 35 remains held at the non-operating position as shown in FIG. The first wheel brake B <b> 1 is braked by the traction force acting on 42.

  A cylindrical first inner connecting portion 35e is integrally projected at the distal end portion of the arm portion 35a of the interlocking member 35 so as to protrude toward the lower support portion 33 side. Further, the operating force transmission member 46 is disposed at a position substantially corresponding to the first inner connecting portion 35e in the direction along the axis of the support shaft 38. The operating force transmission member 46 is integrally provided with a cylindrical second outer holding portion 46a opposed to the first inner connecting portion 35e from the side opposite to the non-operating position of the interlocking member 35. The holding portion 46a can be rotated so as to approach and separate from the inner connecting portion 35e, and is supported by the right holder 23 via a shaft 47 parallel to the support shaft 38. The operating force transmission member 46 is integrally provided with a cylindrical second inner connecting portion 46b that protrudes on the opposite side of the interlocking member 35 from the first outer holding portion 35d.

  The end portion of the third outer cable 50 provided in the operation cable 48 connected to the left brake lever 27 is fitted and held in the second outer holding portion 46a of the operation force transmission member 46, and the third cable provided in the operation cable 48 is provided. The inner cable 49 protrudes from the second outer holding portion 46a and is connected to the second inner connecting portion 35e of the interlocking member 35.

  An end portion of the second outer cable 53 provided in the second brake cable 51 connected to the second wheel brake B2 is provided integrally with the right holder 23 so as to face the second inner connecting portion 46b of the operating force transmission member 46. The end of the second inner cable 52 provided in the second brake cable 51 protrudes from the third outer holding portion 23b and is fitted to and held by the third outer holding portion 23b. It connects with the inner connection part 46b.

  Thus, when the left brake lever 27 is braked, the traction force acting on the third inner cable 49 of the operation cable 48 connected to the left brake lever 27 acts on the interlocking member 35 in its operating direction. When the brake operating force of the left brake lever 27 is smaller than the spring biasing force of the spring 40 biased to the operating position side, as shown in FIG. When the reaction force from the third outer cable 50 included in the cable 48 acts on the operation force transmission member 46, the operation force transmission member 46 operates close to the interlocking member 35, and the second brake cable 51 connected to the second wheel brake B2. When the traction force is applied to the second inner cable 52 from the operating force transmission member 46, only the second wheel brake B2 operates as a brake. To. Further, when the brake operating force of the left brake lever 27 exceeds the spring biasing force biasing the interlocking member 35, the interlocking member 35 operates from the non-actuated position as shown in FIG. 9, and therefore the first wheel brake B1. The outer cable 43 of the first brake cable 41 connected to the first brake cable 41 is pushed by the interlocking member 35, and the traction force acts on the first inner cable 42 to brake the first wheel brake B1. The two-wheel brakes B1 and B2 can be operated in conjunction with each other.

  That is, the left brake lever 27 and the second wheel brake B2 are connected to the interlocking member 35 so that the brake operating force exerted on the second wheel brake B2 by the left brake lever 27 is applied to the interlocking member 35 in the operating direction. Will be.

  Referring also to FIG. 10, the lock member 36 has an operation portion 36 a on one end side on the right grip 22 side and a substantially L-shaped engagement claw 36 b on the other end portion on the opposite side to the right grip 22. An intermediate portion of the lock member 36 is rotatably connected to the support shaft 38, and the torsion spring 37 rotates the lock member 36 on the side where the operation portion 36 a is separated from the right grip 22. Demonstrate spring force.

  On the other hand, the operating force transmission member 46 is integrally provided with a locking portion 46c capable of engaging and disengaging the engaging claw 36b of the locking member 36. The locking portion 46c is provided with a left brake lever. When the operating force transmission member 46 is rotated to the interlocking member 35 side by operating 27, the engaging claw 36b is engaged by operating the lock member 36 so as to bring the operating portion 36a closer to the right grip 22. It is formed so that it can be combined. Thus, the brake operation state of the second wheel brake B2 is maintained by the engagement of the engagement claw 36b with the locking portion 46c, and the small vehicle enters the parking brake state.

  Further, when the left brake lever 27 is strongly operated again, the locking portion 46c rotates clockwise, the engagement of the locking portion 46c and the engagement claw 36b is released, and the locking force is obtained by the reaction force of the torsion spring 37. The member 36 returns to the non-operating state, and the parking brake state is released.

  Next, the operation of the first embodiment will be described. When the right brake lever 24 is operated alone to operate the first wheel brake B1, the braking force corresponding to the operation amount of the first inner cable 42 is applied to the first wheel brake B1. The left brake lever 27 and the second wheel brake B2 are connected to the interlocking member 35 such that the brake operating force exerted on the brake B1 and exerted on the second wheel brake B2 by the left brake lever 27 is applied to the interlocking member 35 in its operating direction. It is connected to the.

  Therefore, when the left brake lever 27 is braked, the brake operating force reaches the second wheel brake B2 and also the interlocking member 35, and the spring 40 biasing the interlocking member 35 to the non-actuated position side. When the brake operating force is smaller than the spring biasing force, the interlocking member 35 is stationary at the non-operating position, and only the second wheel brake B2 is braked. Thus, when the brake operating force of the left brake lever 27 exceeds the spring biasing force, the interlocking member 35 operates from the non-operating position, so that the outer cable 43 of the brake cable 41 connected to the first wheel brake B1 is connected to the interlocking member 35. Since the first wheel brake B1 is also braked by the traction force acting on the inner cable 42 of the brake cable 41, the first and second wheel brakes B1 and B2 are interlocked with each other. Can be activated.

  That is, by adjusting the spring biasing force of the spring 40 that biases the interlocking member 35 toward the non-actuated position, the brake operation force when interlocking the first and second wheel brakes B1 and B2 is set optimally. It is possible to switch between the single brake state and the interlocked brake state by the brake operation force of the left brake lever 27.

  In addition, the operating force transmission member 46 that can operate so as to approach and separate from the interlocking member 35 is disposed opposite to the interlocking member 35 on the side opposite to the inoperative position, and is connected to the first wheel brake B1. The first inner cable 42 of the first brake cable 41 is connected to the right brake lever 24, and the second inner cable 52 of the second brake cable 51 connected to the second wheel brake B2 is connected to the operating force transmission member 46. The end of the third outer cable 50 provided in the operation cable 48 connected to the left brake lever 27 is held, and the end of the first outer cable 43 provided in the first brake cable 41 is held in the interlocking member 35 and operated. The third inner cable 49 of the cable 48 is connected to the interlocking member 35 according to the brake operation of the left brake lever 27. So as to exert a tractive force in the actuating direction are connected.

  Therefore, when the left brake lever 27 is braked, the traction force acting on the third inner cable 49 of the operation cable 48 connected to the left brake lever 27 acts on the interlocking member 35 in its operating direction. When the brake operation force of the left brake lever 27 is smaller than the spring biasing force biased to the side, the interlocking member 35 is stationary at the non-actuated position, and the reaction force from the third outer cable 50 provided in the operation cable 48 Acts on the operating force transmission member 46, so that the operating force transmission member 46 operates in proximity to the interlocking member 35, and the second inner cable 52 of the second brake cable 51 connected to the second wheel brake B2 is connected to the second inner cable 52 from the operating force transmission member 46. Only the second wheel brake B2 is actuated by the traction force. Further, when the brake operating force of the left brake lever 27 exceeds the spring biasing force biasing the interlocking member 35, the interlocking member 35 operates from the non-actuated position, and therefore the first brake cable 41 connected to the first wheel brake B1. The first outer cable 43 is pushed by the interlocking member 35, and a traction force acts on the first inner cable 42. Therefore, the first wheel brake B1 is braked, and the first and second wheel brakes B1, B2 can be operated in conjunction with the brake.

  Thus, the operating force transmission member 46 is disposed so as to face the interlocking member 35, and the brake operating force by the left brake lever 27 is applied to the second wheel brake B 2 via the operating force transmission member 46, and By making it act, the interlocking member 35 and the operating force transmission member 46 can be disposed in the vicinity of the right brake lever 24 in a compact manner.

  Further, the right brake lever 24 is supported by the right holder 23 attached to the steering handle 21 so that the brake operation is possible, and the interlocking member 35 is rotatably supported by the right holder, so that the first and second wheel brakes B1 are supported. , B2 can be interlocked by rotating the interlocking member to ensure the interlocking operation, and the interlocking member 23 can be compactly disposed in the right holder 23 while avoiding an increase in the number of parts. In addition, since the right brake lever 24 and the interlocking member 35 are rotatably supported by the right holder 23 via the common support shaft 38, the right brake lever 24 and the interlocking member 35 can be further prevented while avoiding an increase in the number of parts. It can be arranged in a compact manner.

  Further, since the operating force transmission member 46 is rotatably supported on the right holder 23, the operation force transmission member 46 can be reliably operated with a simple configuration, and an increase in the number of parts can be avoided while the right holder 23 is operated. The operating force transmission member 46 can be disposed in the holder 23 in a compact manner.

  FIGS. 11 to 16 show a second embodiment of the present invention, FIG. 11 is a diagram showing the overall configuration of the interlocking brake device, FIG. 12 is an enlarged plan view of the vicinity of the right brake lever in a non-operating state, and FIG. 13 is an enlarged sectional view taken along line 13-13 in FIG. 12, FIG. 14 is a plan view corresponding to FIG. 12 in a state where the right brake lever is operated, and FIG. 15 is a diagram when the left brake lever is operated with a small brake operating force. FIG. 16 is a plan view corresponding to FIG. 12 when the left brake lever is operated with a large brake operation force.

  First, in FIG. 11, the right grip 22 is attached to the right end portion of the steering handle 21, and the cylinder body 57 of the master cylinder 56 is attached to function as a holder, and can be operated with the right hand holding the right grip 22. A right brake lever 24 ′ as a first brake operation member is pivotally supported on the cylinder body 57. A left grip 25 and a left holder 26 are attached to the left end portion of the steering handle 21, and a left brake lever 27 as a second brake operation member that can be operated with the left hand holding the left grip 25 is left. The holder 26 is pivotally supported. Further, a first wheel brake B1 'as a disc brake is mounted on the front wheel, and a second wheel brake B2 as a drum brake is mounted on the rear wheel.

  Referring to FIG. 12 and FIG. 13 together, the cylinder body 57 is fitted with substantially half of the steering handle 21 and is attached to fit the remaining half of the steering handle 21. The cylinder body 57 is attached to the steering handle 21 by fastening the member 62 to the cylinder body 57 with a pair of screw members 63, 63, and a reservoir 64 is integrally attached to the cylinder body 57.

  The master cylinder 56 is configured such that a piston 59 having an axis along the longitudinal direction of the steering handle 21 is slidably fitted into the cylinder body 57 with the front face facing the output hydraulic pressure chamber 58. The hydraulic pressure generated in the output hydraulic pressure chamber 58 by driving 58 forward is output from an output port 60 provided at the inner end of the cylinder body 57 along the longitudinal direction of the steering handle 21, and the output port 60 is connected to the pipe line. 61 is connected to the first wheel brake B1 ′.

  The cylinder body 57 is integrally provided with a pair of support portions 65 and 66 projecting forward at positions spaced vertically, and a base portion of the right brake lever 24 ′ slidably contacting the upper support portion 65, A knocker 67 that contacts the rear end of the piston 59 in the master cylinder 56 and an interlocking member 68 that sandwiches the knocker 67 between the base portion of the right brake lever 24 are disposed between the support portions 65 and 66.

  A support shaft 69 is installed between the support portions 65 and 66, and the base portion of the right brake lever 24 ', the knocker 67 and the interlocking member 68 are rotatably supported by a common support shaft 69. .

  The knocker 67 is provided with a pressing portion 67a that comes into contact with the rear end of the piston 59 in the master cylinder 56, and is provided with a stepped portion 67b that faces the front side, and a pressing force is input to the stepped portion 67b. The piston 59 is rotated so as to move forward. Further, the right brake lever 24 'is provided with a pressing portion 70 capable of contacting substantially half of the stepped portion 67b. When the right brake lever 24' is operated alone, as shown in FIG. The hydraulic pressure generated in the master cylinder 56 is applied to the first wheel brake B1 ′ by rotating the knocker 67 with the pressing portion 70 in contact with the stepped portion 67b of the 67 and moving the piston 59 forward.

  The interlocking member 68 is connected to the first wheel brake B1 ′ so that the first wheel brake B1 ′ exerts a braking force corresponding to the operation amount when operated from the non-operating position shown in FIGS. A pressing arm portion 68a that is rotatably supported by a support shaft 69 so as to be able to contact the remaining half of the stepped portion 67b of the knocker 67, and a pressing arm that extends along the radial direction of the support shaft 69. A spring receiving arm portion 68b extending from the base portion of the portion 68a is integrally provided, and the pressing arm portion 68a is driven to rotate from the non-operating position to press and drive the piston 59 of the master cylinder 56 via the knocker 67. become.

  Further, between the spring receiving projection 57a that is integrally provided on the cylinder body 57 so as to face the spring receiving arm 68b and the spring receiving arm 68b, the counterclockwise direction of FIG. 12 and FIG. A coiled spring 71 that biases the interlocking member 68 is stretched, and a regulating projection 68c that is integrally provided on the pressing arm portion 68a of the interlocking member 68 abuts on the cylinder body 57, whereby the interlocking member 68 is It is pressed to the non-operating position side.

  The spring receiving arm portion 68b of the interlocking member 68 is integrally provided with a cylindrical outer holding portion 68d at a position corresponding to the lower support portion 66, and the second brake cable 51 connected to the second wheel brake B2 is provided. The end portion of the outer cable 53 is fitted and held in the outer holding portion 68d.

  An intermediate portion of the operating force transmission member 72 extending in the front-rear direction is rotatably supported on the lower support portion 66 of the both support portions 65 and 66 by a shaft 73. The part is integrally provided with a first inner connecting part 72a facing the outer holding part 68d from the side opposite to the non-operating position of the interlocking member 68. Thus, the operating force transmission member 72 rotates so that the first inner connecting portion 72a can be moved closer to and away from the outer connecting portion 68d of the interlocking member 68, and the second brake cable 51 is provided. An end portion of the inner cable 52 protrudes from the outer holding portion 68d and is connected to the first inner connecting portion 72a of the operating force transmission member 72.

  An end portion of the outer cable 50 provided in the operation cable 48 connected to the left brake lever 27 is fitted and held in an outer holding portion 57 b provided in the cylinder body 57. On the other hand, a second inner connecting portion 72b is provided at the other end portion of the operating force transmission member 72, and an inner cable 49 provided in the operation cable 48 protrudes from the outer holding portion 57b to operate the operation force transmission member 72. To the second inner connecting portion 72b. In other words, the inner cable 49 of the operation cable 48 is connected to the operation force transmitting member 72 so that the first inner connecting portion 72 is separated from the outer holding portion 68d of the interlocking member 68 according to the brake operation of the left brake lever 27. The transmission member 72 is connected to the operation force transmission member 72 so as to operate.

  Thus, when the left brake lever 27 is braked, the operating force transmission member 72 causes the first inner connecting portion 72a to be connected to the interlocking member 68 by the traction force acting on the inner cable 49 of the operation cable 48 connected to the left brake lever 27. It will operate | move so that it may separate from the outer holding | maintenance part 68d, and 2nd wheel brake B2 will act as a brake by the traction force acting on the inner cable 52 of the brake cable 51 connected to 2nd wheel brake B2. At this time, the reaction force of the brake cable 51 from the outer cable 53 acts on the interlocking member 68 in the operating direction, but the reaction force urges the interlocking member 68 toward the non-operating position. As shown in FIG. 15, the interlocking member 68 remains stationary at the non-operating position, and the first wheel brake B1 ′ is not braked.

  When the brake operating force of the left brake lever 27 increases and the reaction force of the brake cable 51 from the outer cable 53 exceeds the spring biasing force of the spring 71, the interlocking member 68 is inoperative as shown in FIG. Since it operates from the position, the knocker 67 is pressed and rotated by the pressing arm portion 68a of the interlocking member 68, and the first wheel brake B1 'is braked, and the first and second wheel brakes B1' and B2 are interlocked. The brake can be activated.

  Thus, the interlocking member 68 and the operating force transmission member 72 are disposed so as to be relatively operable, and the brake operating force by the left brake lever 27 is applied to the second wheel brake B2 via the operating force transmission member 72, and the interlocking member 68 Thus, the interlocking member 68 and the operating force transmission member 72 can be disposed in the vicinity of the right brake lever 24 'in a compact manner.

  According to the second embodiment, the same effect as that of the first embodiment can be obtained.

  The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

  For example, the present invention can be widely applied to small vehicles such as motor tricycles and bicycles in addition to motorcycles.

It is a figure which shows the whole structure of the interlocking brake device of 1st Example. It is an enlarged plan view near the right brake lever. FIG. 3 is a front view taken in the direction of arrow 3 in FIG. 2. FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. It is a top view which shows the relative arrangement | positioning of the right brake lever and interlocking member in a non-brake operation state. FIG. 6 is a cross-sectional plan view showing the relative arrangement of the interlocking member and the operating force transmission member in a non-brake operation state along line 6-6 in FIG. 3. FIG. 6 is a plan view corresponding to FIG. 5 in a state where the right brake lever is operated. FIG. 7 is a cross-sectional plan view corresponding to FIG. 6 when the left brake lever is operated with a small brake operation force. FIG. 9 is a cross-sectional plan view corresponding to FIG. 8 when the left brake lever is operated with a large brake operation force. It is a cross-sectional top view which shows the relative arrangement | positioning of the operating force transmission member in a parking brake state, and a lock member along the 10-10 line | wire of FIG. It is a figure which shows the whole structure of the interlocking brake device of 2nd Example. It is an enlarged plan view near the right brake lever in a non-operating state. It is a 13-13 line expanded sectional view of Drawing 12. It is a top view corresponding to Drawing 12 in the state where the right brake lever was operated. FIG. 13 is a plan view corresponding to FIG. 12 when the left brake lever is operated with a small brake operation force. FIG. 13 is a plan view corresponding to FIG. 12 when the left brake lever is operated with a large brake operation force.

21 ... Steering handle 23 ... Right holder 24, 24 '... Right brake lever 27 as first brake operation member ... Left brake lever 35, 68 as second brake operation member Interlocking members 35d, 46a, 68d ... outer holding portions 35e, 72a ... inner connecting portions
36 ... Lock members 38, 69 ... Spindle 41 ... First brake cables 42, 49, 52 ... Inner cables 43, 50, 53 ... Outer cables 46, 72 ... Operating force Transmission member 48 ... operation cable 51 ... second brake cable
56 ... the master cylinder 57 ... Shea Linda body
59 ... Piston
61 ... Pipe line
67 ... Nokka
67b ... Stepped part
68a ... Pressing arm B1, B1 '... first wheel brake B2 ... second wheel brake

Claims (3)

The first and second wheel brakes (B1, B2), the first brake operation member (24) for operating the first wheel brake (B1), and the first and second wheel brakes (B1, B2) are interlocked. In the small vehicle interlocking brake device including the second brake operation member (27) that can be operated, the first outer holding portion (35d) and the first inner connecting portion (35e) are integrally provided. The interlocking member (35) spring-biased to the non-actuated position side, the second inner coupling part (46b), and the second outer holding member facing the first inner coupling part (35e) from the side opposite to the non-actuated position. An operating force transmission member (46) integrally having a portion (46a) brings the first inner connecting portion (35e) and the second outer holding portion (46a) close to and away from each other. The end of the outer cable (43) provided in the first brake cable (41) connected to the first wheel brake (B1) is held by the first outer holding portion (35d). The outer cable (50) included in the operation cable (48) connected to the first brake operation member (24) and the inner cable (42) of the first brake cable (41) connected to the second brake operation member (27). Is held by the second outer holding portion (46a), and the inner cable (49) of the operation cable (48) is moved in response to the brake operation of the second brake operation member (27). Is connected to the first inner connecting part (35e) so as to exert a traction force in the operating direction, and the second inner connecting part (46b) is connected to the second wheel. Small vehicle interlocking brake system and an end portion of the inner cable (52) comprising rake second brake cable leading to the (B2) (51) it is is connected. The interlocking member (35) side according to the operation of the second brake operation member (27) so as to maintain the brake operation state of the second wheel brake (B2) according to the operation of the second brake operation member (27). A locking member (36) operable to engage with the operating force transmission member (46) in a state of being actuated in proximity to a relative position between the interlocking member (35) and the operating force transmission member (46). In response to the operation force transmission member (46) being moved closer to the interlocking member (35) side in response to the re-operation by the stronger force of the second brake operation member (27). The interlock brake device for a small vehicle according to claim 1 , wherein the lock member (36) is spring-biased on the side where the engagement with the operating force transmission member (46) is released . First and second wheel brakes (B1 ', B2), a first brake operating member (24 ' ) for operating the first wheel brakes (B1 '), and first and second wheel brakes (B1', B2) And a second brake operating member (27) that can be operated in conjunction with each other, and is connected to the first wheel brake (B1 ') via a pipe line (61). The cylinder body (57) of the master cylinder (56) is attached to the steering handle (21), contacts the first brake operation member (24 ') and the piston (59) of the master cylinder (56) and The first brake operation member (24 ') is brought into contact with a substantially half portion so as to operate so as to press the piston (59) in response to the operation of the first brake operation member (24'). A non-operating position side having a knocker (67) provided with a portion (67b), an outer holding portion (68d) and a pressing arm portion (68a) capable of coming into contact with substantially the remaining half of the stepped portion (67b) An interlocking member (68) which is spring-biased by the shaft is rotatably supported on the cylinder body (57) via a common support shaft (69), and the outer holding member is supported from the side opposite to the non-operating position. An operating force transmission member (72) having an inner coupling part (72a) opposite to the part (68d) allows the outer holding part (68d) and the inner coupling part (72a) to approach and separate from each other. The end of the outer cable (53) provided in the brake cable (51) connected to the second wheel brake (B2) is supported on the body (57) so as to be rotatable. Held, said Lee emissions toner cable of the brake cable (51) (52) is connected to the inner connecting section (72a), the inner cable of the control cable connecting to the second brake operating member (27) (48) (49) The operating force transmission member (72) is operated to the side that separates the inner connecting portion (72) from the outer holding portion (68d) in accordance with the brake operation of the second brake operating member (27). An interlocking brake device for a small vehicle, which is connected to an operating force transmission member (72).

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