JPH06257630A - Brake device for vehicle - Google Patents

Abstract

PURPOSE:To increase braking force and remarkably eliminate brake lock irrespective of an increase in braking force in a brake device for a vehicle. CONSTITUTION:A brake device comprises a brake disk 2 fixed to an axle 1 of a vehicle; brake plates 3 disposed on either or both sides of the brake disk 2, to be reversely rotated coaxially with the brake disk 2 by rotating force of the axle 1; and an abutting means 11 for forcibly bringing the brake plate 3 into contact with the side surface of the brake disk 2. Accordingly, the reverse rotation driving force of the brake plate 3 is obtained from the rotating force of the axle to be braked, thus increasing the braking force and remarkably eliminating brake lock irrespective of an increase in braking force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake disc fixed to the axle or drive shaft of a vehicle, and a brake plate reversely rotated by utilizing the rotational force of the axle or drive shaft. The present invention relates to a brake device for a vehicle, which can increase the braking force by forcibly contacting with the vehicle and can minimize the brake lock despite the increase in the braking force.

[0002]

2. Description of the Related Art Conventionally, a brake device for a vehicle of this type is
For example, there are drum brakes and disc brakes.

The drum brake is formed by a brake drum fixed to an axle and a brake shoe that comes into contact with the inside of the brake drum by a pressing force such as hydraulic pressure. The disc brake is composed of a brake disc fixed to the axle and a disc pad that holds a part of the brake disc.

[0004]

However, since the inside of the brake drum itself is a space enclosed to some extent, the above-mentioned drum brake often retains heat generated during braking. Become.

Therefore, the heat causes the brake drum itself to thermally expand and change the state of contact with the brake shoe, so that the planned braking cannot be performed, and the brake shoe is operated. In the hydraulic mechanism for the oil, the pipe that feeds the oil is also heated, and air bubbles are often generated in the oil.
There is also a problem that a so-called vapor lock phenomenon occurs.

Furthermore, in the case of this drum brake, since the brake shoe is simply pressed against the inner peripheral surface of the brake drum, in order to apply a strong braking force, the pressure contact is made with an extremely strong force. Need to let. Therefore, a sudden braking force is often generated, and there is also a problem that it is difficult to perform smooth braking intended by the operator.

The latter disc brake solves these problems. However, since the brake disc is exposed to the outside air, heat is dissipated to the outside air, and even if there is thermal expansion, the brake disc is exposed. The contact state with the disc pad that is sandwiched due to the radial direction of the plate does not change much, and since there is no such heating, the vapor lock phenomenon does not occur, and further, the brake disc is Since the disc pads are sandwiched from both sides, the braking can be performed smoothly, so that the braking intended by the operator can be performed to some extent.

However, in the case of this disc brake, since the brake disc is simply sandwiched by the disc pads from both sides, the braking force remains unsatisfactory,
In particular, in automobile races where extreme braking is performed, in order to increase the braking force, a new material such as carbon is used to generate the maximum frictional resistance in the braking temperature range during the braking. I'm using one. However, disc brakes using such new materials are worth four wheels.
It is an expensive thing that costs several million yen with 4 sets, and it will be worn out so that it will be unusable in one car race, so it is difficult to use it on a normal vehicle from the viewpoint of cost There was a problem.

In view of the above-mentioned problems and the like, the present invention adopts a structure such as a disc brake, but can secure an extremely strong braking force without using a particularly expensive material, and can reduce the cost. However, it was created as a problem to provide a vehicle brake device that can be provided at a low cost and that can eliminate brake lock as much as possible during braking.

[0010]

DISCLOSURE OF THE INVENTION According to the present invention, a brake disc fixed to an axle or a drive shaft of a vehicle, and a brake disc disposed on one side or both sides of the brake disc by the rotational force of the axle or drive shaft. The above-mentioned problem is solved by comprising a braking plate concentrically rotating in the opposite direction and a contact means for forcibly contacting the braking plate with the side surface of the brake disc.

[0011]

In the vehicle brake device according to the present invention, the braking plate is reversely rotated in the opposite direction to the rotation of the brake disc by utilizing the rotational force of the axle or the drive shaft, and the braking plate is applied to one side or both sides of the brake disc. When the brake disc is rotated concentrically with the brake disc and brought into contact with the side surface of the brake disc by the contacting means, the brake disc rotates in the reverse direction while the brake disc rotates in the reverse direction, so the braking force is doubled. However, it is reliably braked with a light force.

In that case, since the rotational driving force of the reverse rotation of the brake plate utilizes the rotational force of the axle or the drive shaft that rotates the brake disc, if the brake disc is braked by the contact of the brake disc. Therefore, the braking force is also applied to the axle or the drive shaft to which the brake disc is fixed to reduce the speed and the traveling of the vehicle is also braked, but the reverse rotation of the brake plate is also reduced due to the reduction of the axle or the drive shaft. The sudden braking force is not applied, and the brake lock phenomenon is eliminated as much as possible.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

Basically, a brake disc fixed to an axle or a drive shaft of a vehicle and a brake disc disposed on one side or both sides of the brake disc are concentrically opposite to the brake disc by the rotational force of the axle or drive shaft. It is composed of a rotating braking plate and an abutting means for forcibly contacting the braking plate with the side surface of the brake disc. The concrete structure thereof is the first embodiment shown in FIG.

That is, the first embodiment is formed so that, for example, a circular brake disc 2 is fixed to the axle 1 that drives and rotates the wheels W of the vehicle, and rotates together with the axle 1.

On both sides of the brake disc 2, a braking plate 3 having a diameter slightly larger than that of the brake disc 2.
Is arranged rotatably with respect to the axle 1 with the axle 1 as a rotation axis and also slidable in the axial direction of the axle 1.

Brake disc 2 on this braking plate 3
Reverse rotation gears 7 that are fixed to the braking plate 3 and rotate together are disposed on the opposite sides of the.

On the other hand, a braking plate drive gear 6 is arranged so as to be fixed to the axle 1 so as to face the reverse rotation gear 7.

A crown gear 5 rotatably held by a holding body 8 is arranged so as to mesh with the braking plate drive gear 6 and the reverse rotation gear 7 in a suspended state.

Then, the braking plate 3 is reversely rotated by the rotational force of the axle 1.

Further, a disc spring 4 is arranged between the braking plates 3 which rotate in the opposite directions in this way, at a portion projecting outward from the brake disc 2 so as to be separated from the brake disc 2. It is formed so as to press in the direction.

The braking plates 3 are formed so as to be pressed against the resilient force of the disc spring 4 by the contact means 11 and to be brought into contact with the brake disc 2.

The contact means 11 may have any structure, but since the braking plate 3 is rotating, the rotating body 1
It is desirable to form the braking plate 3 by pressing it by 2. The contact means is formed so that the driver of the vehicle depresses the brake pedal.

On the other hand, in the second embodiment, as shown in FIG.
Instead of the brake plate drive gear 6 and the reverse rotation gear 7 of the first embodiment, the brake plate drive crown gear 26 and the reverse rotation crown gear 2 are used.
7, instead of the crown gear 5, a connecting gear 25, which is a normal gear, is used. Instead of the disc spring 4, the braking plates 23 for braking the rotation of the brake disc 22 rotate at the same number of revolutions. It has a structure in which ordinary coil springs 24 are arranged in the circumferential direction.

The contact means may have the same structure as that of the first embodiment described above, but any structure other than that may be used as long as it is a system of pressing for contact. Anything is fine.

In the case of each of these embodiments, the braking plates 3, 2
It is considered that the movement of 3 in the direction of the brake discs 2, 22 affects the meshing of gears for reverse rotation, but in reality, the brake discs 2, 22 in the state where no braking is performed are performed. There should be a small gap between the brake plate and the brake plate 3, 23, and 0.5mm is enough.
Even if the braking plates 3 and 23 move a distance of about mm, the meshing of the gears is hardly affected.

In addition to the above, a third embodiment shown in FIG.
There is a fourth embodiment shown in FIG.

In these embodiments, the bevel gears 35, 36, 3 are used.
The structure is such that the braking plates 33, 43 are rotated in reverse with respect to the brake discs 32, 42 by utilizing 7, 45, 46, 47. In the case of the third embodiment, the intermediate bevel gear 3
7 so that it can move in the direction of approaching and separating from the axle 1,
Due to the approaching distance, the brake plate 33 causes the brake disc 32 to move.
It is formed so as to be close to and away from.

In the case of the fourth embodiment, the bevel gears 45, 46, 47 are fixed instead of the type in which the intermediate bevel gear 37 is separated from the axle as in the third embodiment. In addition, the braking plate 43 is fixed to the bevel gear 46 on the braking plate side, and the braking plate 43 is attached to the rotating force transmitting plate 48. The slide bearing 49 is movable in the direction of the axle 1 and only the rotational force of the rotating force transmitting plate 48 is transmitted. It is attached and formed through.

Also in the case of the fourth embodiment, the abutting means may be the same as that of the first embodiment described above, and in the case of the third embodiment as well, although not shown, similar ones may be used. good.

On the other hand, in each of the above-mentioned embodiments, the braking plates 3 and 23 are arranged on both sides of the brake discs 2 and 22, but the braking plate may be arranged on only one side and the braking force is slightly different. Although it may drop, on the contrary, it may be better to have an appropriate braking force rather than an excessively strong braking force. Therefore, it is appropriately selected depending on the intended use.

Further, the structure for reversing the braking plate is not limited to the above-mentioned embodiment, and for example, the belt may be reversed by the rotational force of the axle, or other reverse rotation may be caused. Since various structures can be considered, the structure is not limited to the structure. Further, instead of the structure in which the braking plate is rotated in the reverse direction by the axle, the braking plate may be rotated in the reverse direction by the rotation of the drive shaft.

Needless to say, other structures are not limited to the above-mentioned embodiment.

[0034]

According to the present invention thus formed, the braking plate is reversely rotated in the opposite direction to the rotation of the brake disc by utilizing the rotational force of the axle or the drive shaft, and the braking plate is attached to one side of the brake disc. Alternatively, when the brake discs are arranged on both sides and are rotated concentrically with the brake discs and brought into contact with the side faces of the brake discs by the contact means, the braking discs are rotating in the reverse direction while the braking discs are rotating in the reverse direction. Is doubled and can be braked reliably with a light force.

In this case, since the rotational driving force of the reverse rotation of the brake plate utilizes the rotational force of the axle or drive shaft rotating the brake disc, if the brake disc is braked by the contact of the brake disc. Therefore, the braking force is also applied to the axle or the drive shaft to which the brake disc is fixed to reduce the speed and the traveling of the vehicle is also braked, but the reverse rotation of the brake plate is also reduced due to the reduction of the axle or the drive shaft. The brake lock phenomenon can be eliminated as much as possible without applying a sudden braking force.

As described above, according to the present invention, although a structure such as a disc brake is adopted, an extremely strong braking force can be secured without using a particularly expensive material, and the cost is low. It can be provided, and various excellent effects such as the brake lock being eliminated as much as possible during braking can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a first embodiment of the present invention.

FIG. 2 is a schematic sectional view of a second embodiment of the present invention.

FIG. 3 is a schematic front view of a third embodiment of the present invention.

FIG. 4 is a schematic front view of a fourth embodiment of the present invention.

[Explanation of symbols]

W wheel 1 axle 2 brake disc 3 braking plate 4 disc spring 5 crown gear 6 braking plate drive gear 7 reversing gear 8 holding body 11 contact means 12 rotating body 22 brake disc 23 braking plate 24 coil spring 25 connecting gear 26 braking plate drive Crown gear 27 Reverse rotation crown gear 32 Brake disc 33 Braking plate 35 Connecting bevel gear 36 Braking plate driving bevel gear 37 Intermediate bevel gear 42 Brake disc 43 Braking plate 45 Connecting bevel gear 46 Braking plate driving bevel gear 47 Intermediate bevel gear 48 Rotational force transmission Plate 49 slide bearing

Claims (1)

[Claims] 1. A brake disc fixed to an axle or a drive shaft of a vehicle, and braking arranged on one side or both sides of the brake disc so as to rotate concentrically with the brake disc by a rotational force of the axle or drive shaft. A brake device for a vehicle, comprising: a plate; and an abutment unit for forcibly contacting the brake plate with a side surface of the brake disc.