JPS6128498Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a brake using a liquid, such as oil, as a medium.
In particular, it relates to a brake that causes oil to flow through rotating vanes.

Conventionally, this type of brake is known, but the structure,
In particular, the arrangement of the vanes was complicated and difficult to implement, but the present invention not only simplifies the arrangement of the vanes but also simplifies the overall structure, making it easier to implement, and also increases the amount of oil and increases the braking force. , and to obtain something effective such as automatically returning leaked oil.

The invention will now be described in detail with reference to the illustrated embodiments.

1 is an immovable sealed cylindrical case, and a cylindrical rotor 2 is installed inside this case in sliding contact with both side walls.
are arranged concentrically, and a liquid, such as oil, is filled between the two cylinders.

Reference numeral 3 denotes a rotating shaft for driving this rotor, which is installed through the center of the case 1, and within the rotor, one or more hollow hubs 4 are attached to this rotating shaft, for example, two at 180° intervals.
fixed in the radial direction, and its open end is fixed to the rotor 2.
adheres to the inner surface of the A rectangular wing plate 7 pushed up by a push spring 6 is inserted into the hollow portion 5 of the hub so as to be slidable in the radial direction, and an elongated hole 8 through which the wing plate passes is provided in the rotor 2.

Reference numeral 9 denotes an arc-shaped guide piece that contacts the tip of the vane plate on its inner surface, and is integrated with this at both ends within the cylindrical case 1 to form an eccentric ring with respect to the case, and is connected to the cylindrical rotor 2. Close to the bottom outer surface with a slight gap. A suitable number of oil holes 10, 10' are provided in both sleeves near both ends of this guide piece.

Further, reference numeral 11 denotes an on-off valve for an oil flow path, which is provided between the bottoms of the cylindrical case 1 and the guide piece 9, and its operation handle 12 is provided protruding outside the case. The oil drain hole 1 is located in the guide piece 9 near the oil outflow side of this on-off valve.
3 and is also provided with a check valve 14, and the hollow portion 5 of the hub 4 is also provided with an oil discharge hole 13'.

The liquid brake of the present invention has such a structure, and when it is used in a car, for example, the cylindrical case 1 is fixed to the car body to make it immovable, and the cylindrical case 1 is fixed to the rotating shaft 3 as shown in Fig. 3. The fixed mounting piece 15 is firmly attached to the frame 17 of the wheel 16.

Now, if the engine rotates this rotating shaft clockwise, the hub 4, blades 7, and rotor 2 will integrally rotate in the same direction, and the blades will be pushed up by the push spring 6 and the guide piece 9 It rotates while contacting a part of the case 1 connected thereto, and presses the oil between the case and the rotor, so this oil flows from the oil hole 10' in the right sleeve of the guide piece 9 to the on-off valve 11 and the left side. The oil flows through the oil passage hole 10 in the sleeve part, and since the vane plate contacts the eccentric wheel during that time, it slides through the elongated hole 8 of the rotor 2 in the radial direction.

Next, when the on-off valve 11 is closed with the operating handle 12 in an attempt to brake the wheels 16, the oil flow is cut off, and this oil is transferred to the vane plate 7, and therefore to the rotating shaft 3.
prevents rotation of the wheel and stops the wheel.

As described above, according to the present invention, since braking is performed using a large amount of oil between the cylindrical case 1 and the cylindrical rotor 2, the braking force is large, and it can be easily adjusted using the operating handle 12 of the on-off valve 11. In conventional aircraft of this type, the eccentric wheel that comes into contact with the blade 7 is usually a perfect circle, but in the present invention, the eccentric wheel is a notched circle, and both ends thereof are tapered skirts. The arc-shaped guide piece 9 is integrated with a part of the cylindrical case 1 to form an eccentric ring for this case, and a separate eccentric ring is not required, so the structure is simple and the case and eccentric ring are not required. By integrating the wheels, both are strengthened, and the contact action between the vane and the eccentric wheel is ensured.
Therefore, it is easy to implement. In addition, since the rotor 2 is coupled with the rotating shaft 3 and rotates stably, the case 1
Although there is little leakage of oil into the rotor 2, even if a small amount of leaked oil passes through the periphery of the rotor and accumulates at the bottom of the guide piece 9 due to centrifugal force, it will still leak through the exhaust hole 13' of the hub 4 and the long hole of the rotor. Even if oil leaks from the valve 8 due to the force of the monkey and accumulates at the bottom of the guide piece, this oil will be drained through the drain hole 13 provided on the oil outflow side of the on-off valve 11.
It is pulled back by the spilled oil and returns automatically, and even if the rotating shaft 3 is reversed due to the backing of the vehicle, there is a backflow prevention valve 14 in this discharge hole.
Oil in the channel is prevented from flowing back through the drain hole.

[Brief explanation of the drawing]

FIG. 1 is a cutaway elevational view of an embodiment of the present invention, FIG. 2 is a cutaway side view of the same, and FIG. 3 is a partially cutaway reduced elevation view showing an example of the same in use. 1... Cylindrical case, 2... Cylindrical rotor, 3...
Rotating shaft, 4... hub, 5... hub hollow part, 6...
Pressure spring, 7... Vane plate, 8... Long hole of rotor, 9
...Guide piece, 10, 10'...Oil hole, 11...
...Opening/closing valve, 12...Operation handle, 13, 13'
...Oil drain hole, 14...Return prevention valve, 15...Mounting piece, 16...Wheel.

Claims (1)

[Scope of utility model registration request] A cylindrical rotor 2 is placed in an immovable sealed cylindrical case 1.
are slid concentrically, a liquid such as oil is filled between the two cylinders, a hollow hub 4 is fixed in the radial direction to the rotating shaft 3 of the rotor, and the tip of this hub is fixed to the rotor 2, In addition, a vane plate 7 pushed up by a spring 6 is slid in the hollow part 5 of the hub, and a long hole 8 of the rotor 2 is inserted.
The arc-shaped guide piece 9 that contacts the tip of the vane plate 7 is integrated with a part of the cylindrical case 1 to form an eccentric ring with respect to the case, and approaches the rotor 2 with a slight gap. In addition, an appropriate number of oil holes 10, 10' are provided on both sleeves of the guide piece, and an on-off valve 11 is provided between the guide piece 9 and the approach portion of the case 1, and the oil outlet side of the guide piece is provided with an on-off valve 11. Oil drain hole 13
A liquid brake is provided with a check valve 14, and an oil discharge hole 13' in the hub hollow part 5.