JP2010149685A - Saddle-riding type vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a saddle-riding type vehicle including an interlocking brake device miniaturizing a coupling part of a cable disposed in a brake arm. <P>SOLUTION: A motorcycle 10 includes a front wheel brake 12 and a rear wheel brake 16; a front brake arm 21 for applying a braking force to the front wheel brake; a front wheel brake operating element 49; a rear wheel brake operating element 31; and an interlock device 33 including an equalizer for branching the operation force applied to the rear wheel brake operating element 31. A first hole 85 to which a distal end 65 of a first cable is coupled, and a second hole 86 to which a distal end 66 of a second cable is coupled are disposed in a front brake arm 21. The first and second holes 85 and 86 are elongated holes and nonparallel to each other, which are arranged to form a V-shape to the rear of the vehicle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an improvement in a saddle riding type vehicle provided with an interlocking brake device.

There is known a bar-handle vehicle interlocking brake device in which a front wheel brake and a rear wheel brake are interlocked by operating one brake operator, and the front wheel and the rear wheel are simultaneously braked (see, for example, Patent Document 1). .)
JP 2004-42908 A (FIG. 1)

  In FIG. 1 of Patent Document 1, an output distributor 24 (hereinafter referred to as “the second brake operation element 13 as a rear wheel brake lever” is used to distribute operating force to a second brake operator 13 (the reference sign is the same as in the same document). And an operating lever 34 of the front wheel brake 6 is connected to the output distributor 24 via the front wheel brake connecting means 21 and the rear wheel brake connecting means 22. An operating lever 34 of the rear wheel brake 8 is connected. Further, the operating lever 34 of the front wheel brake 6 is connected to the first brake operator 12 as the front wheel brake lever through the single connecting means 20. In other words, the operating lever 34 of the front wheel brake 6 is connected to two systems of cables, that is, the individual connecting means 20 and the front wheel brake connecting means 21. The operating lever 34 (hereinafter also referred to as “front brake arm 34”) is provided with two elongated holes as connecting portions to which the individual connecting means 20 and the front wheel brake connecting means 21 are respectively connected. In addition, by providing a long hole, when one of the single connecting means 20 and the front wheel brake connecting means 21 is pulled, the other connecting means is prevented from applying an unnecessary force.

  For example, when an operating force is applied only to the single connecting means 20, the elongated hole provided in the operating lever 34 moves. Therefore, it is difficult to apply a large force to the front end of the front wheel brake connecting means 21 inserted into the elongated hole. . At this time, the leading end of the single connecting means 20 approaches the tip of the front wheel brake connecting means 21.

  In this case, if an adjustment nut or the like as a position adjusting means is provided at the front end of the front wheel brake connecting means 21 and the front end of the single connecting means 20, the front end of the front wheel brake connecting means 21 and the single connecting means are provided. It is conceivable that the distance between the two long holes as the connecting portion is sufficiently wide so that the 20 tips do not hit each other. However, enlarging the width may increase the size of the connecting portion.

  Then, this invention makes it a subject to provide the saddle riding type vehicle provided with the interlocking brake device which can make the connection part of the cable provided in the brake arm small.

  The invention according to claim 1 is supported by the front wheel brake for braking the front wheel of the saddle riding type vehicle and the rear wheel brake for braking the rear wheel, and the front wheel brake so as to be able to turn, and the braking force applied to the front wheel brake according to the turning. A front brake arm that gives the front wheel brake, a front wheel brake operator operated by the occupant when braking the front wheel brake, a rear wheel brake operator operated by the occupant when braking the rear wheel brake, and the rear wheel brake operator In a straddle-type vehicle that includes an interlocking device having an equalizer that branches an applied operating force and transmits it to the front wheel brake and the rear wheel brake, the front brake arm is guided from one of the front wheel brake operator and the interlocking device. A first hole to which the tip of the first cable to be connected is connected, and the tip of the second cable led from the other of the front wheel brake operator and the interlocking device Is defined, a first reference line passing through the center of rotation of the front brake arm is defined, and the first point is placed on the first reference line with a certain distance from the center of rotation. A second reference line passing through the center of rotation of the front brake arm, a second point on the second reference line radially outward from the first point, and a first point centered on the center of rotation. A first circle passing through the first point is defined as a first hole passing through the first point, a second circle passing through the second point about the center of rotation is defined as a first circle passing through the second point A tangent line of the second circle is defined, and the tangent line of the second circle intersects at the second point, and an inclination line that rises from the tangent line of the second circle toward the turning direction of the front brake arm is determined. A long hole extending along the line is a second hole.

  The invention according to claim 2 is characterized in that the front brake arm is curved in a convex shape in a direction opposite to the direction toward the axle (radially outward from the axle).

  According to a third aspect of the present invention, the bottom link type suspension includes a front fork that rotatably supports the front wheel on the axle, and the front axle is sandwiched in the front-rear direction so that the bottom link suspension faces toward the opposite side of the pivot axis of the front brake arm. It is provided.

  The invention according to claim 4 is provided in the brake arm, and a fastening hole into which a rod-like fastening member for fixing between the brake arm and the rotating shaft is inserted is provided below the rotating shaft, and the axis of the fastening hole Is characterized by crossing a straight line connecting the axle and the rotation shaft in a non-braking state.

  The invention according to claim 5 is characterized in that a bottom surface portion is provided at the bottom of the brake arm, and a straight line forming the bottom surface portion in a side view is a shape that rises from an inclined line toward the rotation direction of the front brake arm. To do.

  In the invention according to claim 1, in the saddle riding type vehicle provided with the interlocking device, the first cable and the first cable each connecting the first cable and the second cable to the distal end portion of the front brake arm, and the first hole. Is also provided with a second hole on the outside.

  The first hole is a long hole extending along the tangent of a circle centered on the rotation center, and the second hole is the rotation direction of the front brake arm with respect to the tangent of the circle centered on the rotation center. The elongated holes extend along an inclined line that rises from the tangent to the circle, and these first and second holes are arranged non-parallel to each other.

  When the brake operation force is applied only to the first cable of the first cable and the second cable connected to the front end of the front brake arm in the radial direction with respect to the rotation center, the front brake arm is connected to the first cable. Due to the operation force applied to the center, it rotates backward about the center of rotation. At this time, since the brake operating force is not applied to the second cable, the tip of the second cable stays in the same position as the front brake arm rotates, and the second hole moves. On the other hand, the tip of the first cable moves along with the front brake arm along a first circle about the rotation center. Therefore, the tip of the first cable and the tip of the second cable are close to each other.

In the present invention, the second hole is a long hole extending along an inclined line rising from the tangent of the circle toward the rotation direction of the front brake arm with respect to the tangent of the circle centered on the rotation center. And the second holes were arranged non-parallel to each other. For this reason, as the operating force applied to the front brake arm increases, the tip of the second cable is guided away from the tip of the first cable by the second hole.
Since the first cable and the second cable can be made difficult to approach, the second hole can be made to approach the first hole. As a result, the connecting portion can be reduced, and the front brake arm can be made compact.

  In the invention according to claim 2, the pivot shaft of the front brake arm is provided on the opposite side to the pivot direction across the axle of the front wheel, and the front brake arm is convex in the direction opposite to the direction toward the axle. It is curved. With such a configuration, the axle and the rotation shaft can be brought close to each other while ensuring a sufficient rotation angle for the front brake arm.

  In the invention according to claim 3, the bottom link type suspension is provided on the front fork that rotatably supports the front wheel by the axle, with the axle of the front wheel sandwiched in the front-rear direction and facing the opposite side of the pivot axis of the front brake arm. Since it is provided, a space in front of the axle is secured, and a brake arm or the like can be easily arranged using this space. Since space is secured, maintenance around the front brake can be improved.

  In the invention according to claim 4, the fastening hole is disposed below the rotation shaft, and the fastening hole intersects a straight line connecting the axle and the rotation shaft in the non-braking state. It is arranged on the side close to the vertical direction. Since the axis of the fastening hole is disposed on the side close to the top and bottom, the fastening hole is easily visible. Therefore, it becomes easy to insert the bolt into the fastening hole. Therefore, it is possible to improve the assembling property of the brake arm.

  In the invention which concerns on Claim 5, the bottom face part was provided in the bottom of the brake arm, and the straight line which makes a bottom face part by side view was made into the shape which rises from an inclination line toward the rotation direction of a front brake arm. By turning, the tip of the second cable approaches the bottom surface portion, but since it is inclined, it is difficult to approach even if the bottom surface portion and the second hole are brought close to each other. For this reason, the second hole can be disposed close to the bottom surface, and the brake arm can be made compact.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. Hereinafter, the arrangement relationship of each element described is shown in the direction seen from the motorcycle driver. The drawings are viewed in the direction of the reference numerals.

  FIG. 1 is a configuration diagram of an interlocking brake device provided in a saddle riding type vehicle according to the present invention. A front wheel brake 12 for braking a front wheel 11 is arranged at a front portion of a motorcycle 10 as a saddle riding type vehicle. A front brake panel 13 serving as a cover member is disposed on the side of the front wheel brake 12.

  A rear wheel brake 16 for braking the rear wheel 14 is disposed at the rear part of the rear swing arm 15 provided at the rear part of the motorcycle 10, and a rear brake as a cover member is provided at a side part of the rear wheel brake 16. A panel 17 is arranged.

  A front brake arm 21 that applies a braking force to the front wheel brake 12 according to the rotation of the front brake arm support shaft 18 can swing on the front brake panel 13 via a front brake arm support shaft 18 as a rotation shaft. A first front wheel cable 23 (interlocking cable) as a first cable and a second front wheel cable 24 as a second cable are connected to the front end portion 22 of the front brake arm.

  The first front wheel cable 23 is connected to a rear wheel brake operator 31 that is disposed at the left end of the steering handle 26 and is operated by an occupant when braking the rear wheel brake 16. An interlocking device 33 is interposed between the first front wheel cable 23.

  The interlock device 33 is connected to the rear wheel brake operator 31 on the input side, and to the output side is connected to the rear wheel cable 35 extending to the rear wheel brake arm 48 and to the first front wheel cable 23 described above. Has been. When the rear wheel brake operation element 31 is operated, a brake operation force is simultaneously applied to the front wheel brake 12 and the rear wheel brake 16 so that the front wheel brake 12 and the rear wheel brake 16 are braked simultaneously. .

The configuration of the interlocking device 33 will be described.
The interlock device 33 is built in the case body 37, the equalizer 38 serving as a distribution lever that distributes the operation force applied by the occupant equally between the front wheel brake 12 and the rear wheel brake 16, and the rear wheel brake operation. An input portion 41 to which the child 31 is attached, a first output portion 42 to which a first front wheel cable 23 branched from the equalizer 38 and extending to the front wheel brake 12 is connected, and a rear wheel extending to the rear wheel brake 16 A second output unit 43 to which the cable 35 is connected.
The equalizer 38 branches the operating force applied to the rear wheel brake operator 31 and transmits it to the front wheel brake 12 and the rear wheel brake 16.

  In the figure, 27 and 27 are grip portions gripped by the driver, 44 is a first urging member for maintaining a distance between a first brake rod 63 (described later) and the front brake arm 21 at a predetermined value, and 45 is a second brake (described later). A second urging member for keeping the distance between the rod 64 and the front brake arm 21 at a predetermined value, 47 is a rear wheel brake rod, 46 is another urging member provided on the rear wheel brake rod 47, and 48 is a rear member. It is a brake arm.

A front wheel brake operator 49 is connected to the second front wheel cable 24 and is provided at the right end of the steering handle 26 and is operated by an occupant when braking the front wheel brake 12.
With the above-described configuration, the front wheel 11 is braked either when the rear wheel brake operation element 31 is operated or when the front wheel brake operation element 49 is operated.

  As described above, the interlocking brake device 52 according to the present invention includes the front wheel brake 12 that brakes the front wheel 11 and the rear wheel brake 16 that brakes the rear wheel 14, and the first front wheel cable 23 is connected to the front wheel brake 12. The second front wheel cable 24 is connected, and the rear wheel cable 35 is connected to the rear wheel brake 16. The interlocking brake device 52 constitutes a part of the brake system of the motorcycle.

  FIG. 2 is a side view of the front wheel provided with the interlocking brake device according to the present invention. The front fork 53 constituting the front portion of the motorcycle 10 as a saddle-ride type vehicle is connected to the lower end portion of the front fork 53 via the axle 56. A front wheel 11 is attached to be rotatable.

The front wheel 11 is provided with an axle 56 provided at the front end 55 of the front fork and a front wheel brake 12 provided around the axle 56 and applying a braking force to the front wheel 11. A front brake panel 13 is provided on a side surface of the front wheel brake 12.
A front brake arm support shaft 18 is provided on the front brake panel 13 so as to be pivotable and to which a brake operating force is input. A front brake arm 21 is provided on the front brake arm support shaft 18 so as to be swingable. The first and second joint pieces 61 and 62 formed in a cylindrical shape on the front brake arm 21 are pivotally supported. The first and second brake rods 63 and 64 are respectively connected to the first and second joint pieces 61 and 62. The first front wheel cable 23 is connected to the first brake rod 63, and the second front wheel cable 24 is connected to the second brake rod 64. Reference numeral 70 denotes a spring member that biases the front brake arm 21 toward the side where the front wheel brake 12 is released. In this embodiment, an application example to a leading arm type suspension is shown.

Hereinafter, the front fork suspension structure that supports the front wheel 11 will be described.
A swing arm 67 that swingably supports the front wheel 11 extends rearward from the front axle 56, and a support shaft 69 is provided at a rear end portion 68 of the swing arm. A fork lower arm 71 extends from the rear to the lower side, and the fork lower arm 71 supports the support shaft 69. Further, a cushion unit 73 is interposed between the end 72 of the axle and the front fork 53, and the axle 56 of the front wheel is swingably supported about the support shaft 69. Such a suspension device is usually referred to as a bottom link type suspension 74.

  In the figure, 75 is a holding part for holding the first and second cables 23 and 24, 76 is a speedometer cable, and G is a road surface. The arm length of the front brake arm 21 is increased within a range that does not interfere with the brake operation force, and the first and second front wheel cables 23 and 24 are positioned close to the front end 22 of the front brake arm. Are connected to each other.

FIG. 3 is a side view of the front brake lever and the connecting portion according to the present invention. The front wheel brake 12 has a first front wheel cable (reference numeral 23 in FIG. 2) and a second front wheel cable ( 2 is provided with a connecting portion 78).
The connecting portion 78 is provided in the radial direction about the rotation center 81 of the front brake arm as a shaft, the first connecting portion 83 to which the first front wheel cable 23 is connected, and the second front wheel cable provided outward from the first connecting portion 83. And a second connecting portion 84 to which 24 is connected.

The first connecting portion 83 has a first hole 85 formed along a tangential direction of a circle with the rotation center 81 of the front brake arm as an axis, and is formed into a columnar shape by being inserted into the first hole 85. The first joint piece 61 movably provided in the first hole 85 and the through-hole portion 87 opened in the cylindrical side surface of the first joint piece 61 are inserted into the first front wheel cable (reference numeral 23 in FIG. 2). A first brake rod 63 and a first adjustment nut 89 that is screwed into the distal end portion 88 of the first brake rod and stops the first joint piece 61 so that the position can be adjusted.
In the figure, reference numeral 21a denotes a front end portion of the front brake arm 21, which is a bottom portion constituting the lowermost portion when the front brake arm 21 is extended downward.
In the present embodiment, the first brake rod 63 is connected to the first front wheel cable 23, but the first brake rod 63 is also connected to the second front wheel cable 24 instead of the first front wheel cable 23. Aim can be achieved.

  The second connecting portion 84 is inserted into the second hole 86, which is disposed radially outside the first hole 85 with the rotation center 81 of the front brake arm 21 as an axis, and the second hole 86. A second joint piece 62 that is formed in a columnar shape and is movably provided in the second hole 86 and a through-hole portion 91 formed in the cylindrical side surface of the second joint piece 62 are inserted and connected to the second front wheel cable 24. It consists of a second brake rod 64 and a second adjustment nut 93 that is screwed into the distal end portion 92 of the second brake rod and stops the second joint piece 62 so that the position can be adjusted.

  In this embodiment, the second brake rod 64 is connected to the second front wheel cable (reference numeral 24 in FIG. 2), but is connected to the first front wheel cable 23 instead of the second front wheel cable 24. Is fine.

  The first hole 85 and the second hole 86 constituting the connecting portion 78 apply an operating force to one of the first front wheel cable 23 and the second front wheel cable 24, and the first joint piece 61 and the second hole 86 are connected to each other. When only one joint piece of the joint pieces 62 moves, the first adjustment nut 89 and the second adjustment nut 93 are arranged at positions that do not contact each other.

  Regarding the arrangement of the first hole 85 and the second hole 86, normally, the two long holes provided inside and outside in the radial direction of the brake arm are parallel to each other in the tangential direction of the rotation arc of the front brake arm. However, in the present invention, the two long holes are arranged non-parallel to each other. The detailed arrangement of the two long holes will be described later.

  The first hole 85 has a long hole having a length in the longitudinal direction A, and the second hole 86 provided outside the first hole 85 is a long hole having a length in the longitudinal direction B. Have The first hole 85 and the second hole 86 have a length relationship of A <B.

  Since the first and second holes 85 and 86 are both long holes, for example, when a brake operating force is applied only to the first brake rod 63, the second joint piece 62 is placed on the second hole 86. By moving, the force applied to the second brake rod 64 to which no brake operating force is applied can be released.

  Referring to FIGS. 1 to 3, the front brake arm 21 is provided with a first hole 85 that is guided to the front wheel brake operator 49 and is connected to a first adjustment nut 89 corresponding to the tip of the first cable 23. In addition, a second hole 86 that is led to the second output portion 43 provided in the interlocking device 33 and to which the second adjustment nut 93 corresponding to the tip of the second cable 24 is connected is provided.

  The front fork 53 that rotatably supports the front wheel 11 by the axle 56 is provided with a bottom link type suspension 74 facing rearward, so that a space in front of the axle is secured, and a brake arm is utilized using this space. Etc. can be easily arranged. Since space is secured, maintenance around the front brake can be improved. Note that a front fork such as a telescopic suspension may be used instead of the bottom link suspension.

  Further, the front brake arm support shaft 18 as a rotation shaft of the front brake arm is provided on the opposite side to the rotation direction across the front wheel axle 56, and the front brake arm 21 is opposite to the direction toward the axle 56. Curved convex in the direction. With such a configuration, the front brake arm support shaft 18 and the front brake arm support shaft 18 as the rotation shaft can be brought close to each other while ensuring a sufficient rotation angle for the front brake arm 21. In this case, if the front brake arm 21 extends downward from the front brake arm support shaft 18, the front brake arm 21 can be arranged in a compact manner.

  It should be noted that the pivot axis of the front brake arm may be lower front than the front axle. Further, the front brake arm 21 does not have to be curved forward in a convex shape. For example, it may be linearly extended from the rotating shaft.

Further, a fastening hole 96 provided in the front brake arm 21 and into which a rod-like fastening member 95 (bolt) for fixing between the front brake arm 21 and the front brake arm support shaft 18 is inserted is formed on the front brake arm support shaft 18. The fastening hole 96 is provided below and intersects a straight line L connecting the axle 56 and the front brake arm support shaft 18 in a non-braking state.
In the figure, reference numeral 97 denotes a nut which is attached by welding to a fastening hole 96 penetrating the lower surface of the front brake arm 21 and into which a fastening member 95 is screwed.

  The fastening hole 96 is disposed below the front brake arm support shaft 18, and the fastening hole 96 intersects a straight line L connecting the axle 56 and the front brake arm support shaft 18 in a non-braking state. J is arranged in a direction approaching the vertical direction. Since the axis J of the fastening hole is arranged in a direction approaching the top and bottom, the fastening hole 96 is easily visible. Therefore, the fastening member 95 can be easily inserted into the fastening hole 96. As a result, the assembling property of the front brake arm 21 can be improved.

FIG. 4 is a front view for explaining the structure of the front end portion of the front brake arm provided in the saddle riding type vehicle according to the present invention, and will be described with reference to FIG.
The front brake arm tip 22 has an outer plate 98 and an inner plate 99 arranged substantially parallel to each other, and is formed in a bag shape. Each of the outer plate 98 and the inner plate 99 has the same position in a side view. A pair of first holes 85, 85 and a pair of second holes 86, 86 are formed, and the first and second holes 85, 85, 86, 86 are formed in the first and second holes, respectively. The joint pieces 61 and 62 are movably inserted, and the first and second brake rods 63 and 64 are passed through the through-hole portions 87 and 91 of the first and second joint pieces 61 and 62, respectively. First and second adjustment nuts 89 and 93 for adjusting the play of the brake and the like are screwed into the end portions 88 and 92 of the second brake rod.

  FIG. 5 is a comparative example and an example diagram for explaining a cable connecting portion provided at the tip of the brake arm, and the arrangement of the first and second holes serving as a connecting portion to which the tip of the cable is connected. Will be described in detail.

In FIG. 5B, an embodiment is shown, in which a first reference line 111 a passing through the rotation center 81 of the front brake arm is defined, and a first distance is maintained from the rotation center 81 with a constant distance (R1). A first point 112 is defined on the line 111a, a second reference line 111b passing through the rotation center 81 of the front brake arm is defined, and a certain distance (from the rotation center 81 radially outward from the first point 112 ( R1) A second point 114 is defined on the second reference line 111b while maintaining a larger distance (R2), a first circle 115 passing through the first point 112 with the rotation center 81 as the center is defined, A long hole extending along the tangent 116 of the first circle passing through the point 112 is defined as the first hole 85, a second circle 117 passing through the second point 114 with the rotation center 81 as the center is defined, A tangent line 118 of a second circle passing through the point 114 of the A slant line 119 that intersects the tangent line 118 at the second point 114 and rises from the tangent line 118 of the second circle toward the turning direction of the front brake arm 21, and extends along the slant line 119. Is a second hole 86.
Note that the angle (θ) formed between the tangent line 118 of the second circle and the inclined line 119 is not limited to the angle shown in the embodiment.

Further, in the bottom surface portion 21 a provided at the bottom of the brake arm, a straight line 131 formed along the bottom surface portion in a side view is assumed to rise from the inclined line 119 toward the rotation direction of the front brake arm 21. In the present embodiment, the bottom surface portion 21 a is arranged in a direction that rises at an ascending angle (α) with respect to the inclined line 119.
By turning, the tip of the second cable approaches the bottom surface portion 21a, but since it is inclined, it is difficult to approach even if the bottom surface portion 21a and the second hole 86 are brought close to each other. Therefore, the second hole 86 can be disposed close to the bottom surface portion 21a, and the brake arm 21 can be made compact.

FIG. 5A shows a comparative example. The first and second holes 85B and 86B, which are two long holes provided inside and outside in the radial direction of the front brake arm 21, are both front brake arms. It is formed in the tangential direction of 21 rotation arcs.
Next, the operation and effect of the above-described change in the arrangement of the second holes 86 will be described.

  6A and 6B are a comparative example and an example diagram for explaining the operation of the cable connecting portion according to the present invention (when the first cable provided inside the connecting portion is pulled). 6 (a) and 6 (b) are comparative examples, and FIGS. 6 (c) and 6 (d) are examples. 6A to 6D, the shape and size of the front brake arm 21 are the same.

  In FIG. 6A, the first hole 85B and the second hole 86B are arranged substantially in parallel. The first and second front wheel cables (reference numerals 23 and 24 in FIG. 2) are in a state where no operating force is applied, and the first adjustment nut 89 corresponding to the tip 65 of the first cable and the tip 66 of the second cable. The second adjustment nuts 93 corresponding to are separated by a distance δa.

  In FIG. 6B, an operating force is applied to the first brake rod 63 from the first front wheel cable (reference numeral 23 in FIG. 2), and the front brake arm 21 is pulled in the direction of the arrow b. 64 shows a state in which no operating force is applied. At this time, the first adjustment nut 89 corresponding to the tip of the first cable and the second adjustment nut 93 corresponding to the tip of the second cable are separated by a distance δb. At this time, since δb is a value close to zero, when the front brake arm 21 is further pulled in the direction of the arrow b, there arises a problem that the first adjustment nut 89 and the second adjustment nut 93 hit each other.

  In order to solve such a problem, the distance between the first brake rod 63 and the second brake rod 64 corresponding to the distance between the tips of the two front wheel cables 23 and 24 can be determined by the mutual rods being in contact with each other. It is necessary to arrange them at a sufficient interval so as not to occur. If it does so, a connection part may become large. In this case, there is means for moving the position of the first hole toward the rotation center side of the brake arm, but a problem remains in that a predetermined rotation torque is ensured. In order to satisfy the above conditions, it has been necessary to take measures such as extending the length of the arm. That is, according to the comparative example, there is a problem that the connecting portion has to be large.

  In FIG. 6C, a first hole 85 and a second hole 86 are arranged in a V shape rearward in the first and second front wheel cables 23 and 24. The first and second front wheel cables 23 and 24 are not subjected to an operating force, and a first adjustment nut 89 corresponding to the tip of the first cable and a second adjustment nut 93 corresponding to the tip of the second cable. Are separated by a distance δc.

  FIG. 6D shows a state where an operating force is applied to the first front wheel cable 23 and the front brake arm 21 is pulled in the direction of the arrow d, but no operating force is applied to the second brake rod 64. At this time, the first adjustment nut 89 and the second adjustment nut 93 are separated by a distance δd. The magnitude of the distance is in the relationship of δb <δd. In contrast to the comparative example, in the embodiment, even when the front brake arm 21 is further pulled in the direction of the arrow d, the first adjustment nut 89 and the second adjustment nut No worries about hitting 93.

FIGS. 7A and 7B are a comparative example and an example diagram for explaining the operation of the cable connecting portion according to the present invention (when the second cable provided outside the connecting portion is pulled).
FIG. 7A is a comparative example. Contrary to the case described in FIG. 6B, an operating force is applied to the second front wheel cable 24, and the second front wheel cable 24 is pulled in the direction of arrow e. However, the operating force is not applied to the first front wheel cable 23. At this time, the second adjustment nut 93 corresponding to the tip of the second cable and the first adjustment nut 89 corresponding to the tip of the first cable are separated by a distance δe. In this case, there is no concern that the second adjustment nut 93 and the first adjustment nut 89 will hit.

  FIG. 7B is an embodiment, and, contrary to the case described in FIG. 6D, an operating force is applied to the second front wheel cable 24, and the second front wheel cable 24 is pulled in the direction of the arrow f. However, the operating force is not applied to the first front wheel cable 23. At this time, the second adjustment nut 93 corresponding to the distal end portion of the second front wheel cable and the first adjustment nut 89 corresponding to the distal end portion of the first front wheel cable are separated by a distance δf. In this case, there is no concern that the first adjustment nut 89 and the second adjustment nut 93 will hit each other.

  The distance (δ) between the first adjustment nut 89 and the second adjustment nut 93 when the operating force is applied to either the first front wheel cable 23 or the second front wheel cable 24 has been described above. Note that when an operating force is applied to either the first front wheel cable 23 or the second front wheel cable 24, the operating force remains within the range of the above-described operation mode, and the description thereof is omitted.

  Referring to FIGS. 5 and 6, the second hole 86 extends along an inclined line 119 that rises from the tangent line 118 of the circle toward the rear of the vehicle with respect to the tangent line 118 of the circle with the rotation center 81 as the center. The first and second holes 85 and 86 are arranged so as to be non-parallel to each other and to form a V shape toward the rear of the vehicle. Therefore, compared to the case where the first and second holes 85 and 86 are arranged in parallel to each other, the first adjustment nut 89 corresponding to the front end of the first front wheel cable 23 and the front end of the second front wheel cable 24 are equivalent. It is possible to make the second adjustment nut 93 difficult to approach. Therefore, it is possible to prevent interference between the first and second adjustment nuts 89 and 93.

  Conventionally, the first cable and the second cable are connected to the tip of the brake arm, but due to the above action, the distance between the first cable and the second cable does not interfere with each other. It is necessary to have a sufficient interval. Since a sufficient interval needs to be ensured, the cable connecting portion may become large.

  In this regard, in the present invention, the second hole 86 is along an inclined line 119 that rises from the tangent line 118 of the circle toward the rear of the vehicle with respect to the tangent line 118 of the circle centering on the rotation center 81 of the front brake arm 21. It was a long hole extending. With the arrangement of the second hole 86, there is a concern that the first front wheel cable 23 and the second front wheel cable 24 may approach excessively even when a brake operating force is applied only to the second front wheel cable 24. Therefore, the second hole 86 can be brought close to the first hole 85. As a result, the connecting portion 78 that connects the brake arm and the cable can be made small, and a predetermined rotational torque can be given to the front brake arm.

  FIG. 8 is a diagram showing another embodiment of FIG. 2, and is greatly different from the embodiment in that it is applied to a so-called trailing arm suspension in which a fork lower arm 71B is provided behind a swing arm 67B. is there. In addition, there is no significant difference from the embodiment and the description is omitted.

  Although the present invention is applied to a motorcycle in the embodiment, it can also be applied to a tricycle and can be applied to a general vehicle.

  The present invention is suitable for a straddle-type vehicle equipped with an interlocking brake device.

It is a block diagram of the interlocking brake device with which the saddle riding type vehicle which concerns on this invention is equipped. It is a side view of the front wheel provided with the interlocking brake device concerning the present invention. It is a side view of the front brake lever and connecting part concerning the present invention. It is a front view explaining the structure of the front-end | tip part of the brake arm provided in the saddle riding type vehicle which concerns on this invention. It is the comparative example figure and example figure explaining the cable connection part with which the front-end | tip part of the brake arm is equipped. It is the comparative example figure and example figure (when the 1st cable provided inside the connection part is pulled) explaining the effect | action of the cable connection part which concerns on this invention. It is a comparative example figure and Example figure explaining the effect | action of the cable connection part which concerns on this invention (when the 2nd cable provided in the outer side of the connection part is pulled). It is another Example figure of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Saddle-type vehicle (motorcycle), 11 ... Front wheel, 12 ... Front wheel brake, 14 ... Rear wheel, 16 ... Rear wheel brake, 18 ... Front brake arm rotating shaft (front brake arm support shaft), 21 ... Front brake arm, 31 ... rear wheel brake operator, 33 ... interlocking device, 38 ... equalizer, 49 ... front wheel brake operator, 52 ... interlocking brake device, 53 ... front fork, 54 ... front wheel, 56 ... axle, 65 ... first 1 end of cable, 66 ... end of second cable, 74 ... bottom link suspension, 85 ... first hole, 86 ... second hole, 95 ... fastening member, 96 ... fastening hole, 111 ... reference line, 112 ... 1st point, 114 ... 2nd point, 115 ... 1st circle, 116 ... 1st circle tangent, 117 ... 2nd circle, 118 ... 2nd circle tangent, 119 ... inclined line, 131 ... Bottom Straight line that forms a part.

Claims (5)

A front wheel brake that brakes the front wheel of the saddle-ride type vehicle and a rear wheel brake that brakes the rear wheel; a front brake arm that is rotatably supported by the front wheel brake and applies a braking force to the front wheel brake according to the rotation; A front wheel brake operator operated by an occupant when braking the front wheel brake, a rear wheel brake operator operated by an occupant when braking the rear wheel brake, and operations applied to the rear wheel brake operator In a straddle-type vehicle comprising: an interlocking device having an equalizer that divides a force and transmits the force to the front wheel brake and the rear wheel brake;
The front brake arm is provided with a first hole for connecting a front wheel brake operator and a tip of a first cable guided from one of the interlocking devices, and is guided from the front wheel brake operator and the other of the interlocking device. A second hole is provided to which the tip of the second cable to be connected is connected;
Defining a first reference line passing through the center of rotation of the front brake arm, defining a first point on the first reference line at a constant distance from the center of rotation;
A second reference line passing through the center of rotation of the front brake arm is defined, and a second point is defined on the second reference line radially outward from the first point;
A first circle passing through the first point about the pivot center is defined;
The long hole passing through the first point is the first hole,
A second circle passing through the second point about the pivot center is defined;
A tangent line of a second circle passing through the second point is defined, the tangent line of the second circle is intersected at the second point, and the second circle is directed toward the turning direction of the front brake arm. A straddle-type vehicle characterized in that an inclined line rising from a tangent line is defined and an elongated hole extending along the inclined line is defined as the second hole.   The straddle-type vehicle provided with the interlocking brake device according to claim 1, wherein the front brake arm is curved in a convex shape in a direction opposite to a direction toward the axle.   A front fork that rotatably supports the front wheel on the axle is provided with a bottom link type suspension with the axle of the front wheel sandwiched in the front-rear direction and facing away from the pivot axis of the front brake arm. A straddle-type vehicle comprising the interlocking brake device according to claim 1 or 2. A fastening hole provided in the brake arm and into which a rod-like fastening member for fixing between the brake arm and the rotating shaft is inserted is disposed below the rotating shaft,
4. The interlock brake device according to claim 1, wherein the axis of the fastening hole intersects a straight line connecting the axle and the rotation shaft in a non-braking state. Saddle type vehicle. A bottom surface is provided at the bottom of the brake arm;
The interlocking brake device according to any one of claims 1 to 3, wherein a straight line forming the bottom surface portion in a side view has a shape rising from the inclined line in a rotation direction of the front brake arm. A straddle-type vehicle.

Images