JPS5856434Y2 - equipment braking device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brake device for various types of equipment, and is designed to eliminate problems caused by oil adhesion and to always exhibit stable performance.

An example in which the present invention is implemented in a juicer will be described below with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a main body, a switch 2 is fixed to the side wall, and a back plate 4 to which legs 3 are fixed is provided on the lower surface.

On the top surface of the main body 1, there is a container 5 having a spout 5a formed on the front surface.
and a container lid 7 in which a charging lower a, which removably has a push rod 6 for pushing the material, is formed near the center, are removably pressed together by a clamp 8.

A motor 10 having a brake device 9 in which a brake drum 11 is fixed to a lower rotating shaft 10a with screws 12 is fixed inside the main body 1.
On the upper rotating shaft 10b of 0, there is a substantially cylindrical spinner with a cutter 13 on the upper surface and a filter 14 with many small holes on the inner surface, an open upper part and many small holes on the outer periphery. 15 is fixed integrally with a set screw 18 by a rotary table 17 which is removably fixed by a tightening knob 16.

Near the outer periphery of the brake drum 11, a brake arm 20 is fixed to the bottom of the motor 10, one end of which is supported by a support shaft 19 and a portion of which forms an arcuate portion 20a along the brake drum 11. 20 is set to be rotatable about a support shaft 19 as a fulcrum.

Further, on the inner surface of the arcuate portion 20a of the brake arm 20, there is provided a brake shoe 2 that comes into sliding contact with the brake drum 11.
1 is fixed, and a spring 22 that urges the brake arm 20 toward the brake drum 11 is supported and fixed by a brake mounting bracket 23.

Further, the tip end 20b of the brake arm 20 on the spindle side is in contact with a brake cam 24 that rotates in direct connection with the rotation of the operating knob 2a of the switch 2.
4 is press-fitted and fixed to the knob shaft 2b.

Generally, in this type of juicer, when the switch knob 2a is also rotated, the power to the motor 10 is turned on, and at the same time, the brake cam 24 is rotated, so that the cam is connected to the spring 22.
The tip end 20b of the brake arm 20 resists the force of
By pressing , the brake arm 20 rotates about the support shaft 19 in a direction away from the brake drum 11, so the brake shoe 21, which was in close contact with the brake drum 11, is released and the motor shaft rotates.

Then, when the material is pushed from the input lower a by the push rod 6,
It is finely cut by the cutter 13 and accumulates on the inner periphery of the spinner 15.

Then, the juice passes through the small holes of the filter 14 and the small holes of the spinner 15 due to centrifugal force, accumulates inside the container 5, and flows out from the spout 5d.

On the other hand, the lees remains inside the spinner 15 as it is.

In order to turn off the power to the motor 10 after squeezing the juice,
Rotate the switch knob 2a.

As a result, the cam 24 also rotates, and the cam 24 rotates toward the tip 20b of the brake arm 20, so the brake arm 20 rotates due to the biasing force of the spring 22, and the brake shoe 21 comes into sliding contact with the brake drum 11. Stop the motor rotation.

If the brake device operates by repeating such operations, the following problems may occur.

That is, as the motor 10 rotates, oil in the motor bearing flows out along the rotating shaft 10b and adheres to the brake drum 11.

The oil adhering to the brake drum 11 is transmitted in the centrifugal direction due to centrifugal force, drips onto the sliding contact portion with the brake shoe 21, or splashes onto the brake shoe 21.

Therefore, even when the brake shoe 21 and the brake arm 20 are in sliding contact and the brake is applied, the brake shoe 21
An oil film forms between the sliding contact portions of the brake drum 1 and the brake drum 11, causing slippage, making it impossible to brake.

The present invention was developed to solve these conventional problems.The brake drum, which is attached to the lower part of the rotating shaft of the motor, has a plurality of annular protrusions on the end face facing the motor, thereby reducing oil in the motor bearing. This prevents it from scattering on the sliding contact area between the brake drum and brake shoe.

In Fig. 3, reference numeral 11a denotes a double concentric annular protrusion formed on the end face of the brake drum 11 facing the motor 10, that is, the upper end face, and the oil flowing down from the motor bearing and reaching the brake drum 11 drives the juicer. When the motor 10 rotates, the centrifugal force causes the brake drum 11 to move outward along the upper end surface of the brake drum 11 and reach the annular protrusion 11a.

Here, the oil moves upward and reaches the top of the annular protrusion 11a, and the oil moves upward from the upper end surface of the brake drum 11 to the annular protrusion 1.
It will scatter from a position a height of 1a away.

Therefore, oil droplets do not adhere to the sliding contact portion between the brake drum 11 and the brake shoe 21.

Thereby, the sliding contact portion between the brake drum 11 and the brake shoe 21 can be kept clean.

Further, the plurality of annular protrusions 11a function as heat radiation fins that dissipate frictional heat during braking, so that overheating of the brake can be prevented.

Although the embodiments have been described with reference to a juicer, the present invention can also be extremely effective in devices other than juicers, such as dehydrators and centrifuges.

As explained above, the present invention has brake shoes arranged around the outer periphery of a brake drum that has a plurality of annular protrusions on the upper end surface, and therefore prevents oil from splashing on the brake sliding surface and overheating the brake drum. This can significantly enhance the braking effect.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a bottom view of the juicer of FIG. 1 with the back plate removed, and FIG. 3 is an enlarged sectional view of the brake drum portion. 10... Motor, 10a, 10b... Curved rotating shaft, 11... Curved brake drum, 11 a...
Annular projection, 21...Curved brake shoe

Claims (1)

[Scope of utility model registration request] A device comprising a motor with a rotating shaft arranged vertically, a brake drum attached to the lower part of the rotating shaft and having a plurality of annular protrusions on the upper end surface, and brake shoes arranged around the outer periphery of the brake drum. Brake device.