JP5981638B2 - Brake equipment for motorcycles - Google Patents

Description

  The present invention includes a brake pedal having a base end portion rotatably supported on a vehicle body frame and a pedal portion provided at a front end portion thereof, and an operating arm that is connected to the base end portion of the brake pedal and extends upward. The present invention relates to a motorcycle brake device comprising a front wheel brake, a rear wheel brake, and an equalizer coupled to the operating arm so as to distribute the operating force of the brake pedal to the front wheel brake and the rear wheel brake.

  For example, Patent Document 1 discloses a motorcycle brake device in which a rear wheel brake is operated by an operation of a brake pedal, and a front wheel brake is also operated by an operation force distributed by an equalizer.

Japanese Unexamined Patent Publication No. 9-58434

  However, in the brake device disclosed in Patent Document 1, since the equalizer moves in the same direction as the moving direction of the operating arm, the direction of the force acting from the equalizer on the operating force transmitting means connected to the equalizer is also the moving direction of the operating arm. When the cable is connected to the equalizer so that it extends forward from the equalizer, the operating force is transmitted by a link mechanism, etc. It is necessary to change the operation direction of the operation force, and the configuration of the operating force transmission means is complicated.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a motorcycle brake device in which a part of an equalizer can be operated in a direction opposite to a moving direction of an operating arm. To do.

  In order to achieve the above object, the present invention provides a brake pedal having a base end portion rotatably supported on a vehicle body frame and provided with a pedal portion at a front end portion thereof, and a continuous connection with the base end portion of the brake pedal. And an operating arm extending upward, a front wheel brake, a rear wheel brake, and an equalizer coupled to the operating arm so as to distribute the operating force of the brake pedal to the front wheel brake and the rear wheel brake. In the motorcycle brake device, an upper end portion of the operating arm is connected to one end portion of the equalizer, a front operation force transmitting means for transmitting an operation force to the front wheel brake is connected to the other end portion of the equalizer, A first feature is that a rear operation force transmission means for transmitting an operation force to the rear wheel brake is coupled to an intermediate portion of the equalizer.

  Further, in addition to the configuration of the first feature, the present invention is further provided above the lower edge of the swing arm that pivotally supports the rear wheel at the rear end and the front end is swingably supported on the vehicle body frame. A second feature is that a connection point between the rear operating force transmission means and the equalizer is arranged.

  According to the present invention, in addition to the configuration of the second feature, a straight line connecting the center of the axle of the rear wheel and the center of the pivot shaft that swingably supports the front end portion of the swing arm on the vehicle body frame. Third, a base end portion of the brake pedal is rotatably supported by the vehicle body frame, and the connection point of the rear operating force transmission means and the equalizer is disposed above the straight line. It is characterized by.

  In addition to the configuration of the second or third feature, the present invention has a fourth feature in that the connection point is arranged offset to one end side of the equalizer with respect to the longitudinal center of the equalizer. .

  In addition to any of the configurations of the first to fourth features, the present invention provides the above-mentioned operation associated with the operation of the brake pedal outside the connecting point of the front operation force transmission means at the other end of the equalizer. A fifth feature is that a delay spring for biasing the equalizer is connected in the same direction as the moving direction of the operating arm.

  Furthermore, the present invention provides the rear wheel brake according to any one of the first to fifth features, wherein a rear end portion of the rear operation force transmitting means disposed on the upper side of the swing arm is a drum brake. A sixth feature is that the brake cam arm is rotatably supported by a support portion of a brake panel included in the brake panel and is connected to an upper end portion of a brake cam arm extending upward from the support portion.

  The interlocking brake cable 29 of the embodiment corresponds to the front operating force transmission means of the present invention, and the brake rod 30 of the embodiment corresponds to the rear operating force transmission means of the present invention.

  According to the first aspect of the present invention, the front end of the operating arm that is connected to the base end of the brake pedal and extends upward is connected to one end of the equalizer and transmits the operating force to the front wheel brake. The force transmission means is connected to the other end portion of the equalizer, and the rear operation force transmission means for transmitting the operation force to the rear wheel brake is connected to the middle portion of the equalizer, so that the brake pedal is operated according to the depression operation of the brake pedal. When rotated, the equalizer operates in the same direction as the moving direction of the operating arm with the other end side as a fulcrum, and the force in the same direction as the moving direction of the operating arm is transmitted to the rear operating force transmission means connected to the middle part of the equalizer. When the brake pedal is further rotated by increasing the depressing operation force of the brake pedal, the reaction force from the rear operating force transmission means side is increased. The other end portion of the equalizer rotates in the direction opposite to the moving direction of the operating arm with the connecting point of the rear operating force transmission means in the middle portion of the riser as a fulcrum, and is connected to the other end portion of the equalizer. A force in the direction opposite to the moving direction of the operating arm can be applied from the equalizer to the front operating force transmission means.

  According to the second feature of the present invention, the connecting point of the rear operating force transmitting means and the equalizer is disposed above the lower edge of the swing arm, so that the connecting point of the equalizer from the base end of the operating arm. Can be secured relatively large, the operating amount of the operating arm can be increased, and the front operating force transmission means can be easily routed while avoiding interference with the engine in front of the equalizer be able to.

  According to the third feature of the present invention, the base end portion of the brake pedal is rotatably supported on the vehicle body frame below the straight line connecting the center of the pivot shaft and the center of the axle of the rear wheel. Since the rear operating force transmission means is connected to the equalizer at the upper side, a relatively large distance from the base end of the operating arm to the connecting point of the equalizer can be secured, and the operating amount of the operating arm can be increased. Can do.

  According to the fourth feature of the present invention, since the rear operating force transmission means is connected to the middle portion of the equalizer at a position offset to one end side from the longitudinal center of the equalizer, the connection point of the front operating force transmission means As a result, the operating amount of the front operating force transmission means can be increased.

  According to the fifth feature of the present invention, the delay spring that biases the equalizer in the same direction as the moving direction of the operating arm is connected to the other end portion of the equalizer. Can be determined by setting the spring load of the delay spring, and the delay spring is connected to the outside of the connecting point of the front operating force transmission means at the other end of the equalizer. A connection point to can be easily secured.

  Further, according to the sixth aspect of the present invention, a brake cam arm that is rotatably supported by a support portion of a brake panel of a rear wheel brake that is a drum brake extends upward from the support portion, Since the rear end portion of the rear operating force transmission means arranged on the upper side is connected to the upper end portion of the brake cam arm, the design can be made without worrying about ensuring the ground height of the brake cam arm.

FIG. 1 is a right side view of the motorcycle according to the first embodiment. (First embodiment) FIG. 2 is a diagram showing the configuration of the brake device. (First embodiment) FIG. 3 is an enlarged view of a main part of FIG. (First embodiment) FIG. 4 is a diagram showing changes in the operating state of the equalizer accompanying the operation of the brake pedal. (First embodiment) FIG. 5 is a diagram showing the configuration of the brake device according to the second embodiment. (Second Embodiment)

18 ... Swing arm 18a ... Lower edge 19 of swing arm ... Pivot shaft 25 ... Brake cam arm 26 ... Brake pedal 26a ... Pedal part 27 ... Actuating arm 28 ... Equalizer 29 ... Interlocking brake cable 30 as front operating force transmission means ... Brake rod 31 as rear operating force transmission means ... Axle 36 ... Delay spring 37 ... Brake panel 37a · Support portion 48 · · · Front operating force transmission means BF1 and BF2 · · · Front wheel brake BR · · · Rear wheel brake C · Equalizer longitudinal center F · Body frame L · Straight line P · ..Rear operation force transmission means and equalizer connection point WR ... Rear wheel

  Embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, front and rear, left and right, and top and bottom refer to directions viewed from a passenger who rides a motorcycle.

First embodiment

  A first embodiment of the present invention will be described with reference to FIGS. 1 to 4. First, in FIG. 1, a front fork 11 that pivotally supports a front wheel WF at a lower end portion, and a bar-like operation connected to the front fork 11. An engine body 15 of the engine E is mounted on a vehicle body frame F having a head pipe 13 that supports the steering handle 12 so as to be steerable at the front end. A fuel tank 16 is disposed on the vehicle body frame F above the engine body 15, and a tandem riding seat 17 is disposed behind the fuel tank 16.

  The vehicle body frame F includes a pivot frame 14 that extends in the vertical direction behind the engine body 15. The pivot frame 14 includes a front end portion of a swing arm 18 that pivotally supports the rear wheel WR at the rear end portion. It is supported through a pivot shaft 19 so as to be swingable. Further, a rear cushion unit 20 is provided between the intermediate portion of the swing arm 18 and the vehicle body frame F in front of the rear wheel WR.

  Referring also to FIG. 2, a front wheel brake BF1 provided on the front wheel WF is operated on the steering handle 12 at a position adjacent to the grip 21 provided on the right end of the steering handle 12 on the inner side. A brake lever 22 for caulking is supported so as to be rotatable, and one end of a front-wheel brake cable 23 is connected to the brake lever 22.

  The front wheel brake BF1 is a drum brake that exhibits a braking force in response to an operation input input to the brake cam arm 24. The rear wheel WR is provided with a rear wheel brake BR. The rear wheel brake BR is also a drum brake that exerts a braking force in response to an operation input input to the brake cam arm 25.

  Referring also to FIG. 3, a brake pedal 26 is rotatably supported on the pivot frame 14 of the vehicle body frame F, and the operating arm 27 integrally connected to the brake pedal 26 is connected to the brake pedal 26. An equalizer 28 for distributing the operating force of the pedal 26 to the front wheel brake BF1 and the rear wheel brake BR is connected. The equalizer 28 is connected to one end portion of an interlocking brake cable 29 as a front operation force transmission means for transmitting an operation force distributed to the front wheel brake BF1, and is distributed to the rear wheel brake BR. A front end portion of the brake rod 30 as a rear operation force transmission means for transmitting the operation force is coupled.

  The other end of the front wheel brake cable 23 and the other end of the interlocking brake cable 29 are connected in parallel to the brake cam arm 24 of the front wheel brake BF1, and are connected to the brake cam arm 25 of the rear wheel brake BR. The rear end of the brake rod 30 is connected. Moreover, the brake cam arm 25 of the rear wheel brake BR is rotatably supported by a support portion 37a of the brake panel 37 included in the rear wheel brake BR and is disposed so as to extend upward from the support portion 37a. A rear end portion of the brake rod 30 disposed on the upper side of the arm 18 is connected to an upper end portion of the brake cam arm 25.

  The brake pedal 26 has a base end portion of the brake pedal 26 supported by a pivot frame 14 of the vehicle body frame F below a straight line L connecting the center of the axle 31 of the rear wheel WR and the center of the pivot shaft 19. The brake pedal 26 is supported so as to be pivotable through 32 and extends forward. A pedal portion 26 a is provided at the tip of the brake pedal 26. The operating arm 27 is integrally connected to the base end portion of the brake pedal 26 and extends upward.

  The equalizer 28 is arranged to extend vertically above the brake pedal 26, and an upper end portion of the operating arm 27 is connected to one end portion (lower end portion) of the equalizer 28, and the interlocking brake cable 29 is connected. Is connected to the other end (upper end) of the equalizer 28, and one end of the brake rod 30 is connected to an intermediate portion of the equalizer 28. Moreover, the connecting point P between the brake rod 30 and the equalizer 28 is above the lower edge 18a of the swing arm 18 and from the straight line L connecting the center of the axle 31 of the rear wheel WR and the center of the pivot shaft 19. Is also disposed above.

  Incidentally, the interlocking brake cable 29 is configured such that the inner cable 34 is movably inserted into the outer cable 33, and is attached to the stay 35 supported by the pivot frame 14 and the engine body 15 in front of the equalizer 28. A cable support portion 35a is provided, and one end portion of the inner cable 34 protruding from one end portion of the outer cable 33 supported by the cable support portion 35a is connected to the upper end portion of the equalizer 28 from the front.

  Further, a delay for energizing the equalizer 28 in the same direction as the movement direction of the operating arm 27 accompanying the operation of the brake pedal 26 outside the connecting point of the interlocking brake cable 29 at the other end of the equalizer 28. A spring 36 is connected.

  The delay spring 36 is a coil spring, and a spring force adjusting member 37 is provided so that the forward / backward position in the front-rear direction can be adjusted to a spring support portion 35b provided on the stay 35 so as to be positioned in front of the cable support portion 35a. Is attached, and the rear end portion of the delay spring 36 to which the front end portion is connected to the spring force adjusting member 37 is connected to the outside of the connecting point of the interlocking brake cable 29 at the upper end portion of the equalizer 28.

  The stay 35 is provided with a stopper 35c that faces the equalizer 28 from the front where the interlocking brake cable 29 is connected. The upper end of the equalizer 28 is not operated when the brake pedal 26 is not operated. The spring is biased by the delay spring 36 and comes into contact with the stopper 35c.

  Next, the operation of the first embodiment will be described. An upper end portion of the operating arm 27 is connected to one end portion (lower end portion) of the equalizer 28, and an interlocking brake cable 29 that transmits an operating force to the front wheel brake BF1 is provided. A brake rod 30 connected to the other end portion (upper end portion) of the equalizer 28 and transmitting an operating force to the rear wheel brake BR is connected to an intermediate portion of the equalizer 28, so that a brake pedal as shown in FIG. When the brake pedal 26 is depressed from the non-operating state of FIG. 26, the brake pedal 26 rotates according to the depression of the brake pedal 26, and the equalizer 28 is connected to the other end side as shown in FIG. The brake is operated in the same direction as the movement direction of the operation arm 27 with the contact portion of the stopper 35c as a fulcrum, and is connected to the intermediate portion of the equalizer 26. The head 30, the moving direction and in the same direction force of the operating arm 27 caused by the rotation of the brake pedal 26 is applied. At this time, since the stopper 35c faces the equalizer 28 from the front at the portion where the interlocking brake cable 29 is connected, no force is applied to the interlocking brake cable 29 from the equalizer 28.

  When the brake pedal 26 is further rotated by increasing the depressing operation force of the brake pedal 26, the reaction force from the brake rod 30 increases, so that the connection point P of the brake rod 30 in the intermediate portion of the equalizer 28 is set. As a fulcrum, a force in the direction opposite to the moving direction of the operating arm 27 acts on the other end portion of the equalizer 28. When the force exceeds the spring force of the delay spring 36, it is shown in FIG. As described above, the other end portion of the equalizer 28 rotates in the direction opposite to the moving direction of the operating arm 27, and a force in the direction opposite to the moving direction of the operating arm 27 is applied to the interlocking brake cable 29. Can act from.

  Further, since the connecting point P of the brake rod 30 and the equalizer 28 is disposed above the lower edge 18a of the swing arm 18, the brake rod 30 and the equalizer are connected from the base end of the brake pedal 26, that is, the base end of the operating arm 27. 28, the distance to the connecting point P can be secured relatively large, the operating amount of the operating arm 27 can be increased, and the interlocking brake cable is provided in front of the equalizer 28 while avoiding interference with the engine E. 29 can be easily routed.

  In addition, below the straight line L connecting the center of the axle 31 of the rear wheel WR and the center of the pivot shaft 19 that swingably supports the front end of the swing arm 18 to the pivot frame 14 of the vehicle body frame F, the brake Since the base end portion of the pedal 26 is rotatably supported by the pivot frame 14 and the connection point P of the brake rod 30 and the equalizer 28 is disposed above the straight line L, the base of the brake pedal 26 is A relatively large distance from the end portion, that is, the base end portion of the operating arm 27 to the connecting point P of the brake rod 30 and the equalizer 28 can be secured, and the operating amount of the operating arm 27 can be increased.

  Further, since the connecting point P is disposed offset from the longitudinal center C of the equalizer 28 toward the one end side of the equalizer 28, the arm ratio to the connecting point of the interlocking brake cable 29 is secured and interlocked. The force acting on the brake cable 29 can be ensured.

  In addition, since the delay spring 36 that biases the equalizer 28 in the same direction as the rotation direction of the brake pedal 26 is connected to the other end portion of the equalizer 28, the operation force is transmitted to the front wheel brake BF1 side by the depression operation of the brake pedal 26. Since the delay spring 36 is connected to the outside of the connecting point of the interlocking brake cable 29 at the other end of the equalizer 28, the timing of the delay spring 36 can be determined. A connection point to the equalizer 28 can be easily secured.

  Further, a rear end portion of the brake rod 30 disposed on the upper side of the swing arm 18 is rotatably supported by a support portion 37a of a brake panel 37 provided in a rear wheel brake BR which is a drum brake, and the support portion 37a. Therefore, the brake cam arm 25 can be designed without worrying about ensuring the ground height.

Second embodiment

  The second embodiment of the present invention will be described with reference to FIG. 5, but the parts corresponding to the first embodiment are only shown with the same reference numerals, and the detailed description is as follows. Omitted.

  The front wheel brake BF2 provided on the front wheel WF is a disc brake in which first, second and third pots 42, 43, 44 arranged in the rotation direction of the brake disc 40 are provided on a caliper 41 straddling the brake disc 40. . A brake lever 45 is supported on the steering handle 12 so as to be rotatable at a position adjacent to the grip 21 provided at the right end of the steering handle 12 on the inner side thereof. A front wheel master cylinder 46 that outputs a brake hydraulic pressure in accordance with an operation is attached to the steering hand 12. The hydraulic pressure output from the front wheel master cylinder 46 is connected to the first and third pots 42 and 44 of the front wheel brake BF2 via a hydraulic pressure path 47.

  The upper end portion of the operating arm 27 integrally connected to the brake pedal 26 is connected to one end portion (lower end portion) of the equalizer 28 that distributes the operating force of the brake pedal 26 to the front wheel brake BF2 and the rear wheel brake BR. The other end portion (upper end portion) of the equalizer 28 is connected to a front operation force transmission means 48 for transmitting an operation force distributed to the front wheel brake BF2 side, and an intermediate portion of the equalizer 28 is connected to a first portion. As in the first embodiment, the brake rod 30 that transmits the operating force distributed to the rear wheel brake BR is connected.

  The front operating force transmitting means 48 is adapted to guide the hydraulic pressure output from the interlocking master cylinder 49 and the interlocking master cylinder 49 having a piston rod 50 connected to the upper end of the equalizer 28. The hydraulic path 51 is connected to the second pot 43 of the front wheel brake BF2.

  The same effect as that of the first embodiment can be obtained also by the second embodiment.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist thereof.

Claims (6)

  A brake pedal (26) in which a base end portion is rotatably supported on the vehicle body frame (F) and a pedal portion (26a) is provided at a tip end portion thereof, and is connected to the base end portion of the brake pedal (26). The operating arm (27), the front wheel brake (BF1, BF2), the rear wheel brake (BR), and the operating force of the brake pedal (26) are applied to the front wheel brake (BF1, BF2) and the rear wheel. In a brake device for a motorcycle comprising an equalizer (28) connected to the operating arm (27) so as to be distributed to a wheel brake (BR), the operating arm (27) is provided at one end of the equalizer (28). The front end operating force transmission means (29, 48) for transmitting the operating force to the front wheel brakes (BF1, BF2) is connected to the other end of the equalizer (28). Concatenated, motorcycle braking device characterized in that it is connected to an intermediate portion of the rear operating force transmitting means for transmitting (30) the equalizer (28) the operating force to the rear wheel brake (BR).   The rear operating force is supported above the lower edge (18a) of the swing arm (18) that pivotally supports the rear wheel (WR) at the rear end and the front end is swingably supported on the vehicle body frame (F). The braking device for a motorcycle according to claim 1, wherein a connecting point (P) of the transmission means (30) and the equalizer (28) is arranged.   A straight line connecting the center of the axle (31) of the rear wheel (WR) and the center of the pivot shaft (19) for pivotally supporting the front end of the swing arm (18) on the vehicle body frame (F) ( L), a base end portion of the brake pedal (26) is rotatably supported by the vehicle body frame (F), and the connection of the rear operating force transmission means (30) and the equalizer (28) is performed. The brake device for a motorcycle according to claim 2, wherein the point (P) is disposed above the straight line (L).   The automatic connection according to claim 2 or 3, wherein the connecting point (P) is arranged offset to one end side of the equalizer (28) with respect to the longitudinal center (C) of the equalizer (28). Brake equipment for motorcycles.   The moving direction of the operating arm (27) accompanying the operation of the brake pedal (26) is outside the connecting point of the front operating force transmission means (29, 48) at the other end of the equalizer (28). The brake device for a motorcycle according to any one of claims 1 to 4, wherein a delay spring (36) for urging the equalizer (28) is connected in the same direction.   A rear end portion of the rear operating force transmission means (30) disposed on the upper side of the swing arm (18) has a support portion (37a) of a brake panel (37) provided in the rear wheel brake (BR) which is a drum brake. And is connected to an upper end portion of a brake cam arm (25) extending upward from the support portion (37a). Brake equipment for motorcycles.

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