JP3738260B2 - Bar handle vehicle brake system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide favorable braking force suitable for a car body condition, performance and a using purpose of a bar handle vehicle on each of front/rear wheel brakes by increasing and decreasing a total output load to the front/rear wheel brakes more or less than an input load of a brake operating element while distributing the input load of the brake operating element as the output load to the front/rear wheel brakes at the time when the front wheel brake and the rear wheel brake interlock with each other. <P>SOLUTION: An output distributor 24 is interposed between a linkage means 21 for the front wheel brake, a linkage means 22 for the rear wheel brake and a linkage means 23 for interlocking. The output distributor 24 is made into a lever mechanism pivotally supporting a part to a base end of an intermediate part of a revolving lever 42 on a bracket 40 at a fixing fulcrum 41 and pivotally supporting an intermediate part of an equalizer lever 44 at a floating fulcrum 43 on one end of the revolving lever 42. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to a brake device applicable to various bar handle vehicles such as motorcycles, motor tricycles, and three- and four-wheel buggy vehicles, and more specifically, this brake device is generated by operation of one brake operator. The present invention relates to a bar handle vehicle brake device having a structure in which the input load is distributed to a front wheel brake and a rear wheel brake by an output distributor, and the front and rear wheel brakes are interlocked.

  As a brake device for interlocking the front wheel brake and the rear wheel brake of a bar handle vehicle, for example, there is one disclosed in Japanese Patent Laid-Open No. 5-16862. This technology employs a mechanical brake that operates by pulling the front wheel brake connecting means or the rear wheel brake connecting means for the front wheel brake and the rear wheel brake, and a pair of brake levers are provided at both ends of the handlebar. An output distributor is disposed in the vicinity of the support shaft of one brake lever, and is connected to the output distributor and connected to the front wheel / rear wheel brake connecting means. On the opposite side of the output distributor with the lever spindle in between, a connecting means for interlocking connected to the other brake lever is connected, and either the front brake or the rear wheel brake is connected by either one or the other brake lever. Both of them can be operated in conjunction with each other.

  The above-mentioned output distributor is a plate-like equalizer lever pivotally supported by a floating fulcrum in the vicinity of the support shaft of one brake lever, on both sides of the output distributor sandwiching the floating fulcrum. The front wheel and rear wheel brake connecting means are connected, and by changing the length from the floating fulcrum to the connecting point of both brake connecting means, the output load to the front wheel brake and rear wheel brake can be made different. I can do it.

  However, since the brake device as described above that mechanically operates the front wheel brake and the rear wheel brake does not have a booster like the hydraulic master cylinder of the hydraulic brake, a brake lever is not provided for the front wheel brake and the rear wheel brake. In some cases, it may be desirable to increase the braking force by outputting a force greater than the input load. However, in the above configuration, the input load from the brake lever is simply distributed as an output load to the front and rear brakes by the output distributor. Therefore, the output load to both brakes could not be increased or decreased beyond the input load.

  Therefore, the present invention can increase or decrease the output load to the front wheel brake and the rear wheel brake when the front wheel brake and the rear wheel brake are interlocked with each other than the input load of the brake operator. An object of the present invention is to provide a bar handle vehicle brake device capable of setting a braking force suitable for a vehicle body condition, performance, and intended use for a brake.

In accordance with the above-described object, the present invention provides a front-wheel brake and a rear-wheel brake of a bar-handle vehicle, each of which is a mechanical brake that operates by traction of a front-wheel brake connecting means or a rear-wheel brake connecting means. An output distributor is interposed between the connecting means for connecting and connecting means for the rear wheel brake and the connecting means for interlocking pulled by the brake operator, and the front wheel brake and the rear wheel are operated by the operation of the brake operator. A brake device for a bar handle vehicle that interlocks with a brake, wherein the output distributor is pivotally supported at a fixed fulcrum on a bracket fixed to the vehicle body, and intermediate between one end of the pivot lever one end side of the part and the pivoted long plate-like equalizer lever by floating fulcrum become more lever mechanism, connected to the interlocking interlocking means on one end of the equalizer lever, the front One of interlocking means and the rear wheel brake interlocking means for braking connected to the other end of the equalizer lever, the other one is connected to the other end of said pivot lever, said pivot lever, an intermediate portion Curved in a substantially U shape, one end side enters between the bracket and the equalizer lever and curves toward the middle part of the rotating lever, the fixed fulcrum is near one end of the middle part, and the floating fulcrum is , And is arranged between the fixed fulcrum and the linkage connecting means connecting point at one end of the equalizer lever .

  According to the present invention using the output distributor of the lever mechanism, when the front wheel brake and the rear wheel brake are operated in conjunction with each other, the input load of the interlocking brake operator is applied to the front wheel brake and the rear brake by the output distributor. By adjusting the lever ratio of the lever mechanism used for the output distributor while distributing the output load to the wheel brake, the total output load to the front wheel brake and rear wheel brake is converted to the input load of the interlocking brake operator. Therefore, a more preferable braking force can be set for each of the front wheel brake and the rear wheel brake according to the vehicle body conditions, performance, and purpose of use of the bar handle vehicle.

  In addition, for existing bar handle vehicles, it is possible to obtain a suitable braking force at a low cost by simply changing the lever ratio of the lever mechanism used in the output distributor by using the front and rear wheel brakes of the target bar handle vehicle. Therefore, it is extremely versatile for practical use.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing a non-operating state of a brake device comprising a combination of a single brake system and an interlocking brake system, FIG. 2 is a front view of a scooter type motorcycle, and FIG. 3 is an operating state of an output distributor. It is a front view.

  The scooter type motorcycle 1 shown in this embodiment includes a rear body (not shown) at the rear of the vehicle body, and a bag-like leg shield 3 that wraps the head pipe 2 is raised at the front of the vehicle body. A front wheel 5 and a front wheel brake 6 are supported at the lower end of the front fork 4 to be supported, and a rear wheel brake 8 is supported at the rear end of the swing arm 7 extending below the rear body.

  A handlebar 9 for steering the front wheel 5 is attached to the upper end of the front fork 4. A first brake operator using an operation lever is provided in front of the accelerator grip 10 on the right end of the handlebar 9 and the fixed grip 11 on the left end. 12 and a second brake operator 13 are disposed, and the brake device 14 of the motorcycle 1 is a single system brake system 15 that operates the front wheel brake 6 alone by a grip operation of the first brake operator 12. And a combination brake system 16 that operates the front wheel brake 6 and the rear wheel brake 8 in conjunction with each other by a grip operation of the second brake operator 13.

  The single system brake system 15 includes a front wheel brake 6 and a first brake operator 12, and single connecting means 20 that connects them. The interlocking brake system 16 includes a front wheel brake 6 and a rear wheel brake 8, front wheel brake connecting means 21 and rear wheel brake connecting means 22 connected to the front and rear wheel brakes 6 and 8, a second brake. The connecting means 23 is connected to the operating element 13 and the second brake operating element 13 and the output distributor 24 is interposed between the connecting means 21 to 23.

  The front and rear wheel brakes 6 and 8 can be accommodated in small-diameter front and rear wheel wheels, and a relatively inexpensive mechanical leading and trailing drum brake is used to move the vehicle forward and backward. In addition, a wire cable is connected to each of the individual connecting means 20, the front wheel brake connecting means 21, the rear wheel brake connecting means 22, and the interlocking connecting means 23 of the interlocking brake system 16. Used.

  The front wheel brake 6 and the rear wheel brake 8 have a pair of arcuate brake shoes 31, 31 facing each other inside a back plate 30 fixed to the front fork 4 or the swing arm 7, and ends of the brake shoes 31, 31. An expansion cam shaft 32 and an anchor pin 33 serving as an expansion fulcrum are disposed between the portions, and an operation lever 34 is fixed to the outer end of the cam shaft 32 protruding from the back plate 30. . Shoe return springs 35, 35 are stretched between the brake shoes 31, 31, and the brake shoes 31, 31 are always urged in the diameter reducing direction by the traction force of the shoe return springs 35, 35.

  The operation lever 34 of the front wheel brake 6 is connected to the individual connection means 20 of the single system brake system 15 and the front wheel brake connection means 21 of the interlock system brake system 16, and the operation lever 34 of the rear wheel brake 8 is connected to the operation lever 34 of the rear wheel brake 8. The interlocking brake system 16 is connected to the rear wheel brake connecting means 22, and the connecting means 20 to 22 are connected to the lever return springs between the wire brackets 30 a protruding from the respective back plates 30 and the operating levers 34. 36 is contracted and always urges the operation levers 34, 34 in the non-operating direction when not in operation.

  The output distributor 24 pulls the interlocking connecting means 23 by a grip operation of the second brake operator 13, and uses the pulling force of the interlocking connecting means 23 as the front wheel brake connecting means 21 and the rear wheel brake connecting means. 22 is a lever mechanism that distributes the input load of the second brake operator 13 to the front wheel brake 6 and the rear wheel brake 8 as an output load, and this output distributor 24 is connected to the vehicle body within the leg shield 3. A bracket 40 fixed to the bracket 40, a pivot lever 42 pivotally supported by a fixed fulcrum 41 near one end of the intermediate portion on the bracket 40, and a floating fulcrum pivoted near one end of the intermediate portion on one end of the pivot lever 42. And an equalizer lever 44 pivotally supported at 43.

  The rotating lever 42 is curved in a substantially U shape at the middle portion, and one end side enters between the bracket 40 and the long plate-like equalizer lever 44 and curves toward the middle portion side, and the other end side is fixed to the vehicle body. The bracket 40 has a shape protruding slightly above the guide wall 40a.

  The other end of the rotating lever 42 is connected to the front wheel brake connecting means 21 through the guide wall 40a of the bracket 40. The equalizer lever 44 is connected to one end of the interlocking connecting means 23 and the other end is connected to the rear wheel brake. The means 22 are connected through the guide walls 40b and 40c of the bracket 40, respectively, the turning lever 42 is interlocked with the tension of the front wheel brake connecting means 21, and the equalizer lever 44 is interlocked with the rear wheel brake connecting means 22. By the balance of the tension of the connecting means 23, they are urged to the inoperative state shown in FIGS. 1 and 2, respectively.

  In the single brake system 15, when the single connecting means 20 is pulled by the grip operation of the first brake operator 12, the operating lever 34 of the front wheel brake 6 rotates integrally with the cam shaft 32, and the cam shaft 32. As a result, the brake shoes 31 and 31 are expanded with the anchor pin 33 as a fulcrum to brake the front wheel, and the input load of the first brake operator 12 is transmitted as it is to the front wheel brake 6 as an output load.

  Further, in the interlocking brake system 16, when the interlocking connecting means 23 is pulled by the grip operation of the second brake operator 13, the equalizer lever 44 of the output distributor 24 is operated in the direction of operation around the floating fulcrum 43 (see FIG. 1 and the counterclockwise direction of FIG. 2, and by the rotation of the equalizer lever 44, the floating fulcrum 43 moves in the same operation direction around the fixed fulcrum 41. The equalizer lever 44 rotates around the fixed fulcrum 41 in the counterclockwise direction of FIGS. 1 and 2 by the movement of the floating fulcrum 43, pulls the rear wheel brake linking means 22, and the rotation lever 42 As the floating fulcrum 43 moves, it rotates about the fixed fulcrum 41 in the operating direction (counterclockwise in FIGS. 1 and 2), and the front wheel brake linking means 21 is pulled and displaced to the state shown in FIG.

  The front wheel brake connecting means 21 and the rear wheel brake connecting means 22 pulled by the rotating lever 42 and the equalizer lever 44 rotate the operating levers 34 of the front wheel brake 6 and the rear wheel brake 8 together with the camshaft 32. Then, by rotating the camshaft 32, the brake shoes 31, 31 are expanded with the anchor pin 33 as a fulcrum, and the front and rear wheels are braked simultaneously. The input load of the second brake operator 13 is The output distributor 24 distributes the output load to the front wheel brake 6 and the rear wheel brake 8.

  Further, in the output distributor 24 of the present embodiment using the lever mechanism as described above, the input load of the second brake operator 13 is distributed as the output load to the front wheel brake 6 and the rear wheel brake 8 while both brakes are applied. The total output load to 6 and 8 can be increased or decreased from the input load of the second brake operator 13, and the connection point between the one end of the equalizer lever 44 and the interlocking connection means 23 is A. The connection point between the other end of the equalizer lever 44 and the rear wheel brake connection means 22 is B, the connection point between the other end of the rotation lever 42 and the front wheel brake connection means 21 is C, and the floating fulcrum 43 and the connection point A are connected. L1 between the floating fulcrum 43 and the connecting point B, L2 between the fixed fulcrum 41 and the floating fulcrum 43, and between the fixed fulcrum 41 and the connecting point C. Is set to length L4 Furthermore, the output load to the rear wheel brake 8 is determined by the input load of the second brake operator 13 and the lever ratio of the lengths L1 and L2 of the equalizer lever 44, and the output load to the front wheel brake 6 is 2 It is determined by the input load of the brake operator 13 + the output load to the rear wheel brake 8 and the lever ratio of the lengths L3 and L4 of the rotating lever 42.

  For example, when the input load of the second brake operator 13 is 1, and the lengths L1 and L2 of the equalizer lever 44 and the lengths L3 and L4 of the rotating lever 42 are in a relationship of L1 = L2 = L3 = L4. The output load to the rear wheel brake 8 is 1, and the output load to the front wheel brake is 2. Further, when the equalizer lever 44 has a lever ratio of length L1 <L2 with respect to the input load 1 of the second brake operator 13, the input load 1> the output load to the rear wheel brake 8, and further to the front wheel brake 6. The output load is determined by the input load 1 and the output load applied to the rear wheel brake 8.

  As described above, in this embodiment, when the interlocking brake system 16 is operated, the input load of the second brake operator 13 is distributed as the output load to the front wheel brake 6 and the rear wheel brake 8 by the output distributor 24. In addition, since the total output load to the front wheel brake 6 and the rear wheel brake 8 can be increased or decreased with respect to the input load of the second brake operator 13 by the output distributor 24 of the lever mechanism, the front wheel brake 6 It is possible to set a more preferable braking force that matches the vehicle body conditions, performance, and purpose of use set for the motorcycle 1 for each of the rear wheel brakes 8.

  Further, in this embodiment, the equalizer lever 44 and the rotation lever 42 of the output distributor 24 are exchanged, and the lever ratio of the equalizer lever 44 and the rotation lever 42 is changed, so that other bar handle vehicles can be moved back and forth. Because it is possible to set a more suitable braking force for the front wheel brake and rear wheel brake of the target bar handle vehicle at low cost without replacing the mechanical brake with other performance, it is practically versatile. Is extremely expensive.

Schematic of the non-operating state of the brake device for a bar handle vehicle showing an embodiment of the present invention The front view of the scooter type motorcycle which shows one example of the present invention The front view of the operating state of the output divider | distributor of the brake device for bar-handle vehicles which shows one example of this invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Scooter type motorcycle, 6 ... Front wheel brake, 8 ... Rear wheel brake, 9 ... Handlebar, 12 ... First brake operator, 13 ... Second brake operator, 14 ... Brake device for motorcycle 1, 15 ... Single brake system for front wheel brake 16, 16 ... Interlock system brake system for interlocking front and rear wheel brakes 6 and 8, 20 ... Single connection means, 21 ... Front wheel brake connection means, 22 ... Rear wheel brake Linking means, 23 ... Linking means for interlocking, 24 ... Output distributor, 31 ... Bow brake shoe, 32 ... Cam shaft, 33 ... Anchor pin, 34 ... Actuation lever, 40 ... Bracket fixed to the vehicle body, 41 ... Fixed Fulcrum, 42 ... rotating lever, 43 ... floating fulcrum, 44 ... equalizer lever, A ... connection point between one end of the equalizer lever 44 and the interlocking connecting means 23, B ... other than the equalizer lever 44 And a connecting point between the connecting means 22 for the rear wheel brake and C, a connecting point between the other end of the rotating lever 42 and the connecting means 21 for the front wheel brake, L1 a length between the floating fulcrum 43 and the connecting point A, L2: length between the floating fulcrum 43 and the connection point B, L3: length between the fixed fulcrum 41 and the floating fulcrum 43, L4: length between the fixed fulcrum 41 and the connection point C

Claims (1)

Each of the front wheel brake and the rear wheel brake of the bar handle vehicle is a mechanical brake that operates by pulling the front wheel brake connecting means or the rear wheel brake connecting means, and the front wheel brake connecting means and the rear wheel brake connecting. For a bar handle vehicle in which an output distributor is interposed between the means and the interlocking connecting means pulled by the brake operator, and the front wheel brake and the rear wheel brake are interlocked by operation of the brake operator. A brake device, wherein the output distributor is pivotally supported at a fixed fulcrum on a bracket fixed to the vehicle body, and a floating fulcrum is located near one end of the intermediate portion at one end of the pivot lever . and the pivoted long plate-like equalizer lever and become more lever mechanism, said one end of the equalizer levers connecting said interlocking interlocking means, interlocking means and the rear wheel blur for the front wheel brake One of keys for interlocking means coupled to the other end of the equalizer lever, the other one is connected to the other end of the pivot lever, the pivot lever, the middle portion is curved in a substantially U shape The one end side enters between the bracket and the equalizer lever and curves toward the intermediate portion of the rotating lever, the fixed fulcrum is near one end of the intermediate portion, and the floating fulcrum is connected to the fixed fulcrum and the equalizer. A brake apparatus for a bar handle vehicle, wherein the brake apparatus is disposed between one end of a lever and the connecting means connecting point for interlocking .

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