JPS62247753A - Brake equipment - Google Patents

Abstract

PURPOSE:To enable a brake equipment to make finer adjustment of braking force by moving a flux generator and by controlling the flux that goes through a disc. CONSTITUTION:Under the condition where magnets 3 and 4 are off a disc 2, no braking force can be exercised to an axis of rotation 1 because of the less flux number to go through the disc 2. When an operational lever 9 is moved and displaced, a rod 10 goes towards right against the force of a presser spring, by which magnets 3 and 4 come closer to the disc 2. Thus the number of lines of through flux between magnets 3 and 4 will increase. When the axis of rotation 1 is rotating, the eddy current is generated. So is the electric braking force. The less the clearance is between the disc 2 and the magnets 3 and 4 proportional to the control input of the operational lever 9, the more powerful gets the braking force. By adjusting the control input of the operational lever 9, the braking force can therefore be finely adjusted.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a brake device used in automobiles and machinery, and in particular to a brake device that exhibits a braking effect when used for deceleration at high speeds. Regarding.

(Prior Art) Conventionally, friction-type disc brakes and drum brakes have been used in automobiles and various machines.
These brakes have a problem in that their braking force is weak at high speeds, and their braking action is reduced due to wear. Another problem is that fine adjustment of the braking force is difficult.

(Problems to be Solved by the Invention) In view of the above-mentioned problems, the present invention provides a large braking force at high speeds, a long service life without fear of wear, and the ability to finely adjust the braking force. The present invention is intended to provide a brake device having the following configuration.

(Means for solving the problem) In order to achieve such an object, the brake device of the present invention uses a conductive material, a magnetic material, a combination thereof, or a combination of any of these and an insulator. a rotating disk, a magnetic flux generator disposed with respect to the disk so that magnetic flux passes through the conductor, and a magnetic flux generator that moves the magnetic flux generator to control the amount of magnetic flux penetrating the disk. It is characterized by comprising a device moving mechanism.

(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is an overall view of a brake device according to the present invention, in which 1 is a rotating shaft that is linked to a driven part of an automobile or machinery, 2 is a disk made of a conductor that is fitted integrally with the rotating shaft 1; 3.4 is a magnet (one of which may be replaced with a magnetic material) that is disposed on both sides of the disk so as to be able to approach and separate from each other with a space therebetween, and these are attached by the mechanism described in r.

That is, the magnets 3 and 4 are connected to the guide cylinder 5 fixed to the stationary part.
, 6 are slidably fitted at the tips of rods 7.degree. 8, each of which has several grooves facing the front and back surfaces of the disc 2. The other rod 8 is connected to the rod 1 through a connecting plate 11 so as to be integrally parallel to the rod 1.
0, a lever 13 and a pin 14 are attached to the rotating self-injection centering around a fulcrum pin 12 set in a stationary part.
．． 15. The rod 10 has its middle portion slidably fitted into a guide tube 16 attached to a portion of the acid 11, and its end portion slidably penetrates the end plate 17 and is connected to the end plate 17. A pressing spring 19 is interposed between the opening and the collar 18 provided on the opening 10. In addition, the operation lever 9
is rotatable around a pin 20 fixed to a stationary part, and its lower end is connected to the rod 10 by a pin 21. FIG. 2 shows the arrangement of the magnets 3.4 as seen in the axial direction of the rotating shaft 1.

In this configuration, as shown by the solid line in FIG.
, 4 are separated from the disk 2, the disk 2
Since the number of magnetic fluxes passing through is also small, no braking force is applied to the disc 2, that is, the rotating shaft 1. However, when the operating lever 9 is moved in the direction of arrow a and displaced as shown by the two-dot chain line, the mouth.

The magnet 10 moves to the right in the drawing as shown by the arrow d against the force of the push spring 19, and as a result, one magnet 3 approaches the disc 2 as shown by the arrow C, and the other magnet 4 approaches the disk 2 as shown by the arrow d. As shown in , it moves in the opposite direction and approaches disk 2, so magnet 3,
When the number of penetrating magnetic fluxes between the rotary shafts 1 and 4 increases and the rotary shaft 1 is rotating, eddy currents are generated and electric braking force is generated. This braking force increases as the distance between the disk 2 and the magnet 3.4, which is proportional to the amount of operation of the operating lever 9, becomes smaller, and by adjusting the amount of operation of the operating lever 9, the braking force can be finely adjusted. It becomes possible. Furthermore, the heat generated by the eddy current generated in the disk 2 can be dissipated by rotating the disk 2.

In the embodiment described above, one or both of the magnets 3 and 4 were made of a magnetic material, but as shown in FIG. It is also possible to control the braking force by adjusting the number of magnetic fluxes penetrating the disc 2 by moving the magnet 22 in the radial direction as shown by the arrow e.

In addition, as a magnet, an electromagnet 22 can be used alone or in combination with a permanent magnet as shown in the figure. Furthermore, when an electromagnet is used, the current (usually alternating current) to be passed through the excitation coil 23 is set. By providing a current controller 24 that adjusts the current to the current set by the controller 25, the braking force can be set arbitrarily.

Further, as shown in FIG. 4, the body 27 of the U-shaped magnet 22 is attached so as to be rotatable in the direction of the disk surface of the disk 2 around the pin 26, and the attachment is connected to the end of the body 27. If the operating rod 28 is moved as shown by the arrow f, the magnet 22 moves as shown by the arrow around the pin 26, thereby changing the number of magnetic fluxes penetrating the disk 2. You can also do it.

Further, as shown in FIG. 5, the disk 2 is made of a magnetic material, in particular a plate material 2b made of a ferromagnetic material with a large value of magnetic permeability, and a plate material 2a having electrical conductivity. It is also possible to attach a U-shaped magnet or an electromagnet 3 to the side so as to be able to move close to or separate from each other, thereby increasing the number of magnetic fluxes penetrating the plate material 2a. Further, the disk 2 may be configured to be made of only a conductive magnetic material or a combination of a magnetic material and an insulating material to increase the number of magnetic flux passing through the disk 2. It may be a combination of all.

It is also effective to use, as the disk 2, a disk whose surface has a conductive material or magnetic material in an insulating material in an appropriate pattern, such as a hand-shaped surface or a roller disk of a motor.

To explain a specific example, (BH)max is 23MG
Oe, coercive force He is 6.5KOe, magnetic flux density Br is 7
, using magnets 3 and 4 with a diameter of 20 mm, and a copper plate with a diameter of 300 mm as the disc 2, at a speed of 120 km/hour, approximately 1
When a medium vehicle weighing 0.00 kg was run and the brakes were applied while the magnets 3 and 4 were brought close to the disk surface at a distance of 0.5 mm, it was possible to stop the vehicle in approximately 10 seconds. In reality, for example, it acts on deceleration up to about 50-60km/hour, and from 60-80km/hour until it comes to a stop, normal brakes such as disc brakes or drum brakes are also used, so it can be stopped more quickly. be able to.

(Effects of the Invention) As described above, the brake device of the present invention includes a conductor,
A rotating disk made of a magnetic material, a combination of at least one of these and an insulating material, or a combination of a conductive material and a magnetic material, and a rotating disk that is arranged so that magnetic flux passes through the conductive material with respect to the disk. Consisting of a magnetic flux generator and a magnetic flux generator moving mechanism that moves the magnetic flux generator and controls the amount of magnetic flux penetrating the disc, it has a large braking force at high speeds, has no risk of wear, and has a long life. Therefore, it is possible to provide a brake device in which the braking force can be finely adjusted.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram showing one embodiment of the brake device of the present invention, Fig. 2 is a cross-sectional view of the disc shown in Fig. 1 viewed in the axial direction, and Fig. 3 is a side view showing another embodiment of the invention. FIG. 4 is a cross-sectional view of still another embodiment of the present invention as seen from the axial direction, and FIG. 5 is a partial side cross-sectional view of still another embodiment of the present invention.

Claims (1)

[Claims] A rotating disk made of an electric conductor, a magnetic substance, a combination thereof, or a combination of any of these and an insulator, and the disk is arranged so that magnetic flux passes through the electric conductor. A brake device comprising a magnetic flux generating device and a magnetic flux generating device moving mechanism that moves the magnetic flux generating device and controls the amount of magnetic flux penetrating the disc.