CN1240579C - Front and rear wheel brake interlinking device for vehicle - Google Patents

Abstract

The present invention provides an interlocking device with a simple structure capable of actuating rear wheel and front wheel brakes when a brake pedal is actuated. A connecting member (20) is installed in the middle part of the front brake cable (4), and the crank lever (27) is pivotally supported on the cover (28) provided on the car body with the connecting member (20), The first arm (27a) of the curved lever (27) is connected to the brake pedal (3) through the interlocking brake cable (6), and the second arm (27b) can abut and separate from the above-mentioned connecting member (20). Opposed to each other, when the brake pedal (3) is indexed to link the brake cable (6), the crank lever (27) moves the connecting member (20) in the actuating direction of the front wheel brake (Bf). When the front brake cable (4) is pulled by the brake lever (2), the connecting member (20) is separated from the curved lever (27).

Description

Front and rear wheel brake linkage device for vehicles

technical field

The invention relates to a front and rear wheel brake linkage device for a vehicle.

Background technique

In the existing braking device for motorcycles, the left brake lever and the right brake lever respectively pivotally support the left end and the right end of the joystick, and the right brake lever passes through the front brake cable and the front wheel brake. The actuating lever of the left brake lever is connected with the actuating lever of the rear brake through the rear brake cable. Simultaneously, the right brake lever is acted by pulling the interlocking brake cable through the equalizer bar, thereby making the front wheel brake action, and such front and rear wheel brake interlocking devices are well known (with reference to JP 9-58434 No.).

However, in the brake device with the brake lever and the brake pedal as the object of the present invention, since the distance between the brake lever and the brake pedal is very long, when the original interlocking device is used for the brake device, Not only does it need to arrange a long interlocking brake cable between the brake lever and the brake pedal, but also the transmission efficiency of the steering force is lowered due to the arrangement of the cable with many bends, which is unsatisfactory.

Contents of the invention

The object of the present invention is to provide a front and rear wheel brake interlocking device for a vehicle, which supports the brake lever shaft actuating the front wheel brake through the front brake cable on the control handle. The brake pedal shaft for actuating the rear wheel brake is supported on the vehicle body, and not only the rear wheel brake but also the front wheel brake can be actuated when the brake pedal is actuated. This brake interlocking device can operate not only the rear wheel brake but also the front wheel brake when the brake pedal is actuated without causing the above-mentioned disadvantages.

In order to achieve the above object, the vehicle brake interlocking device of the present invention supports the brake lever shaft for actuating the front wheel brake through the front brake cable on the joystick, and supports the brake pedal shaft for actuating the rear brake. Supported on the vehicle body, it is characterized in that the middle part of the front brake cable near the head pipe that supports the joystick is connected to the brake pedal through the interlocking brake cable, and is pulled and linked by the brake pedal. When braking the cable, pull the front brake cable from the middle part above.

According to the first feature, when the brake pedal is operated, the rear wheel brakes are actuated, and the front brakes can also be actuated by the interlocking brake cable pulling the intermediate portion of the front brake cable.

Also, since the linked brake cable is connected to the front brake cable near the head tube below the joystick, the linked brake cable can be relatively short, and can be formed to bend along the main frame engaged with the head tube. Since there are few good cable arrangement states, it is possible to suppress the decrease in the transmission efficiency of the operation force.

In addition, in the present invention, the brake lever for actuating the front wheel brake through the front brake cable is pivotally supported on the joystick, and the brake pedal for actuating the rear brake is pivotally supported on the vehicle body. In the device, it is characterized in that a connecting member is installed in the middle part of the front brake cable, and the crank lever shaft is supported on a supporting part provided on the vehicle body close to the connecting member, and the first arm of the crank lever The interlocking brake cable is connected to the brake pedal, and the second arm is opposed to the front wheel brake side end of the above-mentioned connecting member in such a way that it can abut against and separate from. When the interlocking brake cable is indexed by the brake pedal , the curved lever moves the connecting member in the actuating direction of the front wheel brake, and when the front brake cable is pulled by the brake lever, the connecting member is separated from the curved lever.

According to the second feature, when only the brake lever is operated, the front wheel brake can be operated by the front brake cable. At this time, since the connecting member moves upward away from the crank lever, the operation force of the brake lever is not transmitted to the brake pedal, and the non-operating state of the rear brake can be maintained.

When only the brake pedal is operated, the rear wheel brake is activated, and the crank lever is shaken by interlocking the brake cable, and the connecting member is pushed up to pull the lower cable of the front brake cable upwards, and the front brake cable can also be pulled upward. Brake action.

In addition, since the interlocking brake cable is connected to the middle part of the front brake cable through the curved lever, the interlocking brake cable can be configured as a relatively short cable, and the operation force can be suppressed by disposing the interlocking brake cable as a cable with less bending. reduction in transmission efficiency.

In addition, the front and rear wheel brake interlocking device for a vehicle according to the present invention is characterized in that, in addition to the above-mentioned second feature, it also has the following third feature. The third feature is that the first brake cable is divided into brake The upper cable on the lever side and the lower cable on the front wheel brake side attach a connecting element to each split end, connect the connecting element to the connecting member, and set When the connecting member is moved by the curved lever in the direction of action of the front wheel brake, there is a play that makes its movement invalid relative to the upper cable.

According to the third feature, when only the brake pedal is operated, when the connecting member is moved in the direction of action of the front wheel brake by the rocking of the crank lever, the upper cable is left behind within the range of play and does not move, and the brake can be released. The moving lever remains in the non-action position.

In addition, the vehicle front and rear wheel brake interlocking device of the present invention is characterized in that, in addition to the above-mentioned second or third feature, it also has the following fourth feature. The fourth feature is that the curved lever and the connecting member are accommodated and fixed The cover attached to the side surface of the head pipe constitutes the support portion, and the interlocking brake cable is arranged along the side surface of the main frame, and the front end of the main frame is joined to the head pipe.

According to the fourth feature, since the interlocking brake cable can be arranged with a short length along the side surface of the main frame in a good cable arrangement state with little bending, it is possible to suppress a reduction in the operating force transmission efficiency. In addition, the crank lever and the connection member can be unitized together with the cover, and the mountability and maintainability to the head pipe can be improved. In addition, the cover can realize the waterproof and dustproof of the curved lever and the connecting member.

Description of drawings

Fig. 1 is an overall schematic diagram of a brake device for a motorcycle having a front and rear wheel brake interlocking device according to the present invention.

Fig. 2 is a side view of main parts of the aforementioned front and rear brake interlocking device.

Fig. 3 is an enlarged cross-sectional view along line 3-3 of Fig. 2 .

Fig. 4 is an enlarged cross-sectional view of line 4-4 in Fig. 2 .

Fig. 5 is an enlarged cross-sectional view of line 5-5 in Fig. 2 .

Fig. 6 is an exploded perspective view of essential parts of the aforementioned front and rear brake interlocking device.

Detailed ways

Embodiments of the present invention will be described below based on the embodiments of the present invention shown in the drawings.

Fig. 1 is an overall schematic diagram of a brake device for a motorcycle having a front and rear wheel brake interlocking device according to the present invention. Fig. 2 is a side view of main parts of the aforementioned front and rear brake interlocking device. Fig. 3 is an enlarged cross-sectional view along line 3-3 of Fig. 2 . Fig. 4 is an enlarged cross-sectional view of line 4-4 in Fig. 2 . Fig. 5 is an enlarged cross-sectional view of line 5-5 in Fig. 2 . Fig. 6 is an exploded perspective view of essential parts of the aforementioned front and rear brake interlocking device.

First, in Fig. 1, a rod support 10 is fixedly installed adjacent to its right sleeve 1a on the operating handle 1 of the motorcycle, on which the brake lever 2 is pivotally supported. Lever 2 is connected with the actuating lever 7f of drum type front brake Bf by front brake cable 4. In addition, a brake pedal 3 is pivotally supported on the lower part of the vehicle body 8, and the brake pedal 3 is connected with the actuating lever 7r of the drum type rear wheel brake Br through the rear brake cable 5. In addition, the brake pedal 3 is connected to the front brake cable 4 through the front and rear wheel brake interlocking device D including the interlocking brake cable 6 .

On the brake lever 2 and the brake pedal 3, the return springs 11, 12 that are elastically pressed to the non-actuating direction are connected. In addition, return springs 13, 14 for urging the actuation levers 7f, 7r of the front wheel brake Bf and the rear wheel brake Br in the non-actuation direction are also connected.

The front and rear wheel brake interlocking device D will be described with reference to FIGS. 2 to 6 .

As shown in FIG. 2, the body 8 of the motorcycle has a head pipe 8h that supports the joystick 1 in a steerable direction, and a main frame 8m that extends obliquely rearward from the head pipe 8h. out. The front brake cable 4 is arranged along the side of the head pipe 8h. The front brake cable 4 is divided into an upper cable 4a on the side of the brake lever 2 and a lower cable 4b on the side of the front wheel brake Bf at the side of the head pipe 8h, and a cylinder is fixedly installed at each divided end. Shaped connecting elements 15a, 15b. The connection elements 15 a , 15 b are connected to each other by a connection member 20 .

The connection member 20 has, as shown in FIGS. 5 and 6 , a pair of left and right side plates 21, 21 whose upper parts are integrally connected by a U-shaped connection portion 21a. The elongated holes 22, 22 are fitted with the left and right end portions of the connecting elements 15a, 15b. At this time, the upper and lower stay cables 4a, 4b are inserted between the two side plates 21, 21 through the gap 23 provided on the side plate 21, and at least the upper connecting element 15a in the two connecting elements 15a, 15b can be connected to The long hole 22 slides within the play range L from the position where the upper end arm of the long hole 22 abuts to the position where the lower connection element 15b abuts. Further, a front contact piece 24 protruding toward the front of the vehicle is provided on one side of the side panels 21 , 21 , and a rear contact piece 25 is provided on the other side to bend toward the left and right outer sides.

The crank lever 27 cooperating with the above-mentioned connecting member 20 is freely swingably mounted on a cover 28 covering the connecting member 20 and the crank lever 27 by a pivot 29, and the cover 28 is fixed on the side of the head pipe 8h by a bolt 30, and the crank lever 27 A pair of left and right side plates 31, 31 having a first arm 27a and a second arm 27b are integrally connected by a connecting arm 32 at the front end. The first arm 27a extends above the pivot 29, and the second arm 27b Extends to the front of pivot 29. The end of the first arm 27a of the left and right side plates 31, 31 is provided with a connecting hole 33, and a guide piece 34 protruding upward is protruded from the second arm 27b, and the above-mentioned connection is inserted between the left and right guide pieces 34, 34. In the member 20, the lower surfaces of the front and rear abutment pieces 24, 25 of the connecting member 20 and the upper surface of the second arm 27b are opposed to each other so as to be able to contact and separate from each other. A return spring 41 is connected to the crank lever 27 , and the return spring 41 biases the flex lever 27 toward a retracted position where the second arm 27 b contacts the bottom wall of the cover 28 .

The first arm 27a of the two side plates 31, 31 is connected to the above-mentioned brake pedal 3 through the interlocking brake cable 6, and the connecting element 35 of the interlocking brake cable 6 is fitted in the connecting hole 33 of the first arm 27a. . Furthermore, the connecting brake cable 6 is arranged along the side surface of the main frame 8m, and the front end of the main frame 8m is joined to the head pipe 8h. A balancer 40 (see FIG. 1 ) is interposed between the brake pedal 3 and the rear brake cable 5 and interlocking brake cable 6. The balancer 40 can adjust the operating force of the brake pedal 3 to The ratio is distributed to the two brake cables 5,6.

The respective brake cables 4, 5, 6 are inserted through flexible guide tubes 37, 38, 39 whose both ends are held by fixed portions.

The action of this embodiment will be described below.

In the rest state of the brake lever 2 and the brake pedal 3, generally as shown in FIG. The position where the upper and lower ends of the hole 22 are in contact with each other. In addition, the lower surface of the second arm 27b of the crank lever 27 abuts against the inner surface of the cover 28, and the upper surface of the second arm 27b abuts against the front and rear abutment pieces 24, 25 of the connecting member 20, such that The state can be obtained by adjusting the end positions of the guide tubes 37 and 39 of the front brake cable 4 and the interlocking brake cable 5 .

Therefore, if only the brake lever 2 is operated, the traction force generated by its operation will be transmitted to the upper cable 4a, the connecting member 20, and the lower cable 4b to act on the actuating lever 7f, and the actuating lever 7f will move toward the actuating direction. By turning, the front wheel brake Bf can be activated.

During this period, the connecting member 20 moves upward together with the upper and lower cables 4a, 4b, so that the front and rear abutment pieces 24, 25 move away from the second arm 27b, thereby leaving the crank lever 27 down. Therefore, the operation force of the brake lever 2 is not transmitted to the interlocking brake cable 6 and the brake pedal 3, and the non-actuated state of the rear wheel brake Br is maintained.

When the operating force is removed from the brake lever 2, the brake lever 2 and the actuating lever 7f return to the original non-actuating position by the rebound force of the respective return springs 11, 13, and the front wheel brake Bf can be returned to non-active state.

Then, when only the brake pedal 3 is operated, the traction force is distributed to the rear brake cable 5 and the linkage brake cable 6 through the balancer 40, and the traction force added to the rear brake cable 5 acts on the actuating lever 7r, the actuating lever 7r is turned in the actuating direction, so the rear wheel brake Br can be actuated.

In addition, the traction force acting on the interlocking brake cable 6 acts on the first arm 27a and makes the crank lever 27 swing in the direction of arrow A in FIG. During the reset torque, the curved lever 27 still remained in the retreat position. At this time, the front and rear abutment pieces 24, 25 of the connecting member 20 are in contact with the upper surface of the second arm 27b.

And when the above-mentioned rocking moment is greater than the return moment of the return spring 41, the crank lever 27 rocks in the direction of the arrow A, and pulls the lower cable 4b of the front brake cable 4 upwards, so that the actuating lever 7f rotates in the actuating direction. , thereby actuating the front wheel brake Bf.

In this way, only by operating the brake pedal 3, the rear brake Br can be actuated in advance, and the front wheel Bf can be actuated with a slight time lag, whereby the front and rear brakes can be braked approximately simultaneously while suppressing the bowing phenomenon of the front end of the vehicle body. wheel.

During this period, when the connecting member 20 is pushed up by the rocking connection member 20 of the crank lever 27 in the direction of arrow A as described above, since the long hole 22 leaves the connecting element 15a of the upper cable 4a and moves upward, the upper part Pull cable 4a does not move, and brake lever 2 can be kept in the original non-actuating position.

When the operating force is released from the brake pedal 3, the brake pedal 3 and the actuating lever 7f, 7r return to the original non-actuating position due to the rebound force of the respective return springs 12, 13, 14, and the front wheel brake Bf And the rear wheel brake Br can be returned to the non-actuated state.

When the brake lever 2 and the brake pedal 3 are operated at the same time, their operating forces act on the connecting member 20 additively, and the front wheel brake Bf can be strongly actuated.

Since the interlocking brake cable 6 is arranged along the side of the main frame 8m, and is connected to the middle part of the front brake cable 4 through the curved lever 27 on one side of the head pipe 8h, the interlocking brake cable The cable 6 can have a short length and can be easily arranged on the side of the main frame 8m, not only can avoid interference with other objects, but also can obtain a good cable arrangement state with less bending, and can suppress the transmission efficiency of the operating force. reduce.

Moreover, since the crank lever 27 is pivotally supported on the cover 28 fixed to the head pipe 8h and covering the crank lever 27 and the connecting member 20, it is possible to constitute a small assembly composed of the cover 28, the crank lever 27 and the connecting member 20. Assemblability and maintainability can be improved, and waterproof and dustproof of the curved lever 27 and the connection member 20 can be realized.

The present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist thereof. For example, the connecting element 15b of the lower cable 4b may also be connected to the connecting member 20 in a relatively immovable manner. In addition, the front wheel brake Bf and the rear wheel brake Br may be disc brakes. In addition, the present invention is not limited to motorcycles, but can also be applied to three-wheeled or four-wheeled carts having brake levers and brake pedals.

According to the first technical feature of the present invention as described above, the brake lever shaft for actuating the front wheel brake through the front brake cable is supported on the joystick, and the brake pedal shaft for actuating the rear brake is supported on the joystick. On the vehicle body, the middle part of the front brake cable near the head pipe supporting the control handle is connected to the brake pedal through the interlocking brake cable. When the interlocking brake cable is pulled by the brake pedal, Pull the front brake cable from the middle part above. Therefore, when the brake pedal is operated, the rear brake is actuated, and the front brake can also be actuated by interlocking the brake cable and the front brake cable. Moreover, the interlocking brake cable is connected with the front brake cable near the head pipe of the bottom of the joystick, so the interlocking brake cable can be made relatively short. Furthermore, since the cables can be arranged in a good cable arrangement state with little bending along the main member coupled to the head pipe, it is possible to suppress a reduction in the operating force transmission efficiency.

In addition, according to the second technical feature of the present invention, the brake lever for actuating the front wheel brake via the front brake cable is pivotally supported on the joystick, and the brake pedal for actuating the rear brake is pivotally supported on the vehicle body. On the above, it is characterized in that a connecting member is installed in the middle part of the front brake cable, and the crank lever shaft is supported on the supporting part provided on the vehicle body close to the connecting member, and the first arm of the crank lever passes through The interlocking brake cable is connected to the brake pedal, and the second arm is opposed to the front wheel brake side end of the above-mentioned connecting member so as to be in contact with and separated from. When the interlocking brake cable is indexed by the brake pedal, The curved lever moves the connecting member in the actuating direction of the front wheel brake, and when the front brake cable is pulled by the brake lever, the connecting member is separated from the curved lever. Therefore, when only the brake lever is operated, the front wheel brake can be activated by the front brake cable. At this time, since the connecting member moves upward away from the crank lever, the operation force of the brake lever is not transmitted to the brake pedal, and the non-operating state of the rear wheel brake can be maintained.

When only the brake pedal is operated, the rear wheel brake is activated, and the crank lever is shaken through the interlocking brake cable, and the lower part of the front brake cable is pulled upward by pushing up the interlocking member. Front brake action.

In addition, since the interlocking brake cable is connected to the middle part of the front brake cable through the curved lever, the interlocking brake cable can be configured as a relatively short cable, and the operation force can be suppressed by disposing the interlocking brake cable as a cable with less bending. reduction in transmission efficiency.

In addition, according to the third technical feature of the present invention, the first brake cable is divided into an upper cable on the brake lever side and a lower cable on the front wheel brake side, and a connecting element is attached to each split end, and the The connection element is connected with the connection member, and the connection part of the connection element of the upper cable and the connection member is provided with a play that makes the movement of the connection member invalid relative to the upper cable when the connection member is moved by the crank lever in the direction of action of the front wheel brake. . Therefore, when only the brake pedal is actuated, when the connecting member is moved in the direction of action of the front wheel brake by the rocking of the crank lever, the upper cable is left without movement within the range of play, and the brake lever can be held is the non-action position.

In addition, according to the fourth technical feature of the present invention, the above-mentioned support portion is constituted by a cover that accommodates the crank lever and the connecting member and is fixedly mounted on the side surface of the head pipe, and the interlocking brake cable is arranged on the side surface along the joint main frame. On the side of the main frame, the front end of the above-mentioned main frame is joined to the head pipe. Since the interlocking brake cable can be arranged with a short length along the side surface of the main frame in a good cable arrangement state with little bending, it is possible to suppress a decrease in operating force transmission efficiency. In addition, the crank lever and the connection member can be unitized together with the cover, and the mountability and maintainability of the head pipe can be improved. In addition, the cover can realize the waterproof and dustproof of the curved lever and the connecting member.

Claims (4)

1. front and rear wheel brake interlinking device for vehicle, to brake lever (2) axle of front-wheel brake (Bf) action be bearing on the bar handle (1) by preceding brake cable pull (4), to be used to make brake pedal (3) axle of rear brake (Br) action to be bearing in car body (8), it is characterized in that, near the head pipe (8h) of the supporting bar handle (1) of preceding brake cable pull (4) pars intermedia is connected with brake pedal (3) by interlock brake cable pull (6), by this brake pedal (3) traction interlock brake cable pull (6) time, from the preceding brake cable pull (4) of above-mentioned pars intermedia traction.

2. front and rear wheel brake interlinking device for vehicle, to brake lever (2) axle of front-wheel brake (Bf) action be bearing on the bar handle (1) by preceding brake cable pull (4), to be used to make brake pedal (3) axle of rear brake (Br) action to be bearing in car body (8), it is characterized in that, pars intermedia at preceding brake cable pull (4) is installed with transom (20), closely bent lever (27) axle is bearing on the support (28) that is located on the car body (8) with this transom (20), the first arm (27a) of this song lever (27) is connected with brake pedal (3) by interlock brake cable pull (6), the front-wheel brake (Bf) of second arm (27b) and above-mentioned transom (20) but the side end butt, it is opposed to leave ground, by brake pedal (3) index interlock brake cable pull (6) time, bent lever (27) makes transom (20) move to the start direction of front-wheel brake (Bf), by before brake lever (2) traction during brake cable pull (4), transom (20) is left from bent lever (27).

3. front and rear wheel brake interlinking device for vehicle as claimed in claim 2, it is characterized in that, preceding brake cable pull (4) is divided into the top drag-line (4a) of brake lever (2) side and the bottom drag-line (4b) of front-wheel brake (Bf) side, with Connection Element (15a, 15b) be attached on each minute cut node, with this Connection Element (15a, 15b) be connected, and be provided with at the connecting portion of the Connection Element (15a) of top drag-line (4a) and transom (20) and make the invalid play of this motion by bent lever (27) relative top drag-line (4a) when the direction of action of front-wheel brake (Bf) makes transom (20) motion with transom (20).

4. as claim 2 or 3 described front and rear wheel brake interlinking device for vehicle, it is characterized in that, constitute above-mentioned support with taking in bent lever (27) and transom (20) and being fixedly mounted on a cover (28) of the side of pipe (8h), interlock brake cable pull (6) is carried over being configured in laterally on main truss (8m) side of main truss (8m), and its front end of above-mentioned main truss (8m) engages with head pipe (8h).

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