JP2689832B2 - Handbrake controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a hand brake controller for vehicles such as buses.

[0002]

2. Description of the Related Art Generally, in a vehicle such as a bus, a hand brake (also called a center brake) is attached to a transmission at a rear portion of a vehicle body mainly for the purpose of preventing the vehicle from moving when the vehicle is parked or stopped. As a controller of this handbrake, a handbrake lever installed in the driver's seat so that it can be pulled, a long wire interlocking with this, a camshaft lever that can be pulled and rotated by this wire, and the like are provided. As the wire, a flexible Bowden wire including an outer tube and an inner wire is used.

When the camshaft lever is pulled and rotated by this wire, the cam inside the hand brake operates, the brake shoe is pressed against the brake drum, and the rotation of the propeller shaft connected to this drum is braked. Then, the movement of the vehicle is prevented.

[0004]

By the way, in the above-mentioned conventional handbrake controller, due to the structure of the handbrake, a camshaft lever is rotatably supported on the upper side portion of the handbrake so as to be able to rotate in a slightly obliquely rising state. Therefore, in order to rotate this camshaft lever, it must be pulled diagonally downward. For this reason, the wire cannot be installed in a straight line due to the layout of the surrounding equipment, and the tip of the camshaft lever is inevitably lowered once it is lowered to a lower position of the vehicle body and then the terminal is raised diagonally upward. It is connected to the department.

In the wiring of such a wire (Bowden wire), since the terminal is directed obliquely upward, the outer tube portion of the wire terminal is caulked or the bellows tube is connected to waterproof the terminal. There was a problem that water was introduced into the outer tube from the terminal while it was in use, which could easily cause rust of the inner wire and corrosion of the outer tube.

Further, since the wire is bent so that it is first lowered and then raised, the force transmission efficiency is poor, and the wire end is directly connected to the camshaft lever. There was a problem that a large operating force was required for the handbrake lever to pull and rotate the shaft lever.

The present invention has been made in view of the above circumstances, and it is an object of the invention to prevent the entry of water into the outer tube of a wire (Bowden wire) so that the end of the wire can be installed diagonally downward. (EN) Provided is a handbrake controller that is effective in reducing the operating force of a handbrake lever for pulling and rotating a camshaft lever, which is effective in transmitting the force of a wire.

[0008]

In order to achieve the above-mentioned object, a handbrake controller of the present invention is mounted on a transmission at the rear of a vehicle body and has a propeller shaft.
The hand brake that stops the rotation of the
A handbrub that is controlled via a wire by operating a rake lever
In lakes controller, the cross shaft disposed adjacent the side of said hand brake, provided the pivot lever that rotates integrally with the cross shaft, the wire as and which can be rotated to pull the one end of the pivot lever upward Is provided in a state in which the terminal is directed obliquely downward from above, the lower end is connected to the other end of the rotating lever, the upper end is connected to the camshaft lever of the handbrake, and the camshaft lever is moved downward by rotating the rotating lever. It is characterized in that it is configured by being provided with a link rod for pulling and rotating.

[0009]

According to the handbrake controller having the above-mentioned structure, by operating the handbrake lever in the driver's seat, the rotary lever of the cross shaft is rotated in association with the wire so that one end of the rotary lever is pulled upward. Then, the link rod is pulled down by the other end of the rotary lever that is interlocked with this, and the camshaft lever of the hand brake is pulled downward to rotate. This allows the hand brake to perform the braking operation.

Since the wire (Bowden wire) can be installed so that the end of the wire is directed obliquely downward by providing the cross shaft, the turning lever and the link rod, the outer tube portion of the wire end is attached. Even if you simply give water proof such as caulking or connecting bellows pipe as before, water will not enter the outer tube from the terminal, and it is excellent in waterproofness and the inner wire rust and outer tube No more worrying about corrosion.

Further, since the wire need not be bent so much, the transmission efficiency of the force of the wire is improved, and if the length (turning radius) of the rotating lever of the cross shaft is appropriately selected to be large, the cam The operation force of the handbrake lever for pulling and rotating the shaft lever is reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the hand brake controller of the present invention will be described below with reference to the drawings. 1 is a side view of the main part, and FIG. 2 is a plan view of the main part. In the figure, reference numeral 1 indicates a hand brake (center brake) attached to a transmission at the rear of the vehicle body of a vehicle such as a bus. This handbrake 1 is similar to the conventional one, and a camshaft lever 2 is pivotally attached to the upper side portion in a state of standing up slightly obliquely, and by pulling the camshaft lever 2 downward and rotating the handbrake 1. A cam (not shown) inside the brake 1 is actuated to press the brake shoe onto the brake drum to brake the rotation of the propeller shaft connected to the drum to prevent the vehicle from moving. In order to operate the handbrake 1, a wire 3 that interlocks with a handbrake lever of a driver's seat (not shown) is arranged substantially horizontally up to the rear part of the vehicle body.

On the other hand, a vibration absorbing type first cross shaft 4 is provided adjacent to the handbrake 1 and a cross shaft of the present invention.
A second cross shaft 5 serving as a shaft is rotatably attached to a frame 6 of the body via a ball joint 7 or the like. These first cross shafts 4
And the second cross shaft 5 are arranged in a horizontal state and in a direction orthogonal to the propeller shaft.
The cross shaft 4 is arranged at a high position substantially right next to the handbrake 1, and the second cross shaft 5 is arranged at a position rearward and lower than the first cross shaft 4.

In the middle of the first cross shaft 4, a first
The rotary lever 8 is fixed so as to rotate integrally. The first rotating lever 8 is usually slightly forwardly projected to project obliquely downward, and the wire 3 is connected to the lower end of the first rotating lever 8 with the terminal oriented obliquely downward from above. The wire 3 is a Bowden wire, and the end of the outer tube 3a is caulked to the stopper 9 to secure the fixing member 1
It is positioned and fixed to the frame 11 of the body at 0, and the bellows tube 12 is connected to the end of the frame 11 to allow the inner wire 3b to move back and forth. The end of the inner wire 3b is connected to the lower end of the first rotating lever 8 via a pin 13.

In the middle portion of the second cross shaft 5 ,
The second turning lever 14 as the turning lever of the present invention is fixed so as to rotate integrally. The second rotation lever 14 is usually slightly rearward and is provided so as to project obliquely upward. A first link rod 16 is provided by connecting the upper end and the lower end of the second rotating lever 14 to the upper end of the first rotating lever 8 via a ball joint 15. The length of the first link rod 16 can be adjusted.

A third rotating lever 17 is fixed to the end portion of the second cross shaft 5 on the handbrake side so as to rotate integrally therewith. This third rotation lever 17
Has a bent piece portion 17a which is provided so as to project obliquely downward in the opposite direction to the second rotation lever 14 and which rises in an L shape from the lower end thereof. The lower end of the third rotating lever 17 is bent at the bent piece portion 17a, and the lower end thereof is connected to the ball joint 18
And the upper end is connected to the tip of the camshaft lever 2 of the handbrake 1.
A second link rod 19 as a pad is provided. The length of this second link rod 19 is also adjustable.

The operation of the handbrake controller having such a structure will be described. First, the inner wire 3b of the wire 3 is operated by operating the handbrake lever of the driver.
There is pulled as shown by the arrow, the first rotating lever 8 rotates together with the first cross shaft 4. As a result, the first link rod 16 is pulled by the first turning lever 8, and the second turning lever 14 is turned so as to be pulled up.

The rotation of the second rotating lever 14 causes the second cross shaft 5 to integrally rotate, thereby rotating the third rotating lever 17 downward. This third rotation lever 1
The rotation of 7 pulls down the second link rod 19 and pulls the camshaft lever 2 of the handbrake 1 downward to rotate it. As a result, a cam (not shown) inside the handbrake 1 is actuated, the brake shoe is pressed against the brake drum, the rotation of the propeller shaft is braked, and the movement of the vehicle is prevented.

Here, as described above, the first and second cross shafts 4 and 5 and the first to third turning levers 8 and 1 are provided.
4, 17 and the first and second link rods 16 and 19 allow the wire (Bowden wire) 3 to be routed so that the end of the wire is directed obliquely downward. Therefore, from the wire end to the inside of the outer tube 3a. Water does not enter the inner wire 3 and has excellent waterproofness.
There is no need to worry about rust on b and corrosion on the outer tube 3a.

Further, since the wire 3 is not required to be bent so much, the power transmission efficiency of the wire 3 is improved, and the lengths (radius of rotation) of the first and second turning levers 8 and 14 are increased. If you select an appropriately large camshaft lever 2
The operation force of the handbrake lever for pulling and rotating the is reduced.

It should be noted that the present invention is not limited to the above-described embodiment, but for example, the first cross shaft 4, the first turning lever 8 and the first link rod 16 are omitted, and the wire 3 is omitted. It is also possible to connect the end portion to the upper end of the second rotating lever 14 and configure it.

[0022]

Since the handbrake controller of the present invention is constructed as described above, the wire end can be installed so that the end of the wire is directed obliquely downward, and it is effective in preventing water from entering the outer tube of the wire. In addition, the force transmission efficiency of the wire is good, and it is effective in reducing the operation force of the handbrake lever for pulling and rotating the camshaft lever.

[Brief description of the drawings]

FIG. 1 is a side view of essential parts showing an embodiment of a hand brake controller of the present invention.

FIG. 2 is a plan view of an essential part of the embodiment.

[Explanation of symbols]

1 ... Hand brake, 2 ... Cam shaft lever, 3 ... Wire, 4 ... First cross shaft, 5 ... Second cross shaft
Shaft (cross shaft), 8 ... first rotation lever, 1
4 ... second turning lever (turning lever), 16 ... first lever
Link rod, 17 ... third rotation lever, 19 ... second lever
Link rod .

Claims (1)

(57) [Claims] 1. A handbrake controller for controlling a handbrake mounted on a transmission at a rear portion of a vehicle body for braking rotation of a propeller shaft via a wire by operating a handbrake lever of a driver seat,
The cross shaft is provided adjacent the side of said hand brake, provided the pivot lever that rotates integrally with the cross shaft,
The wire is provided so that the end is directed obliquely downward from above so that one end of the rotating lever can be pulled upward to rotate, and the lower end is connected to the other end of the rotating lever and the upper end is connected to the hand brake. A hand brake controller comprising a link rod which is connected to a cam shaft lever and which pulls the cam shaft lever downward by the rotation of the rotation lever to rotate the cam shaft lever.