JPS6141566Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric brush device intended for household stocking such as cattle.

For example, brushing the epidermis of cows not only improves meat quality in beef cows and increases milk yield in dairy cows, but also removes dirt from the hair, dandruff, etc. It has excellent benefits such as improving health conditions.

However, in conventional brush devices of this type, hairs or tails may become wrapped around the brush body and become locked, resulting in burnout of the motor. One possible solution to this problem is to install a heat-responsive type current breaker in the motor, but since this reacts directly to the heat of the motor, it may malfunction and stop operation inadvertently. There were some drawbacks.

The present invention solves these conventional drawbacks, and embodiments thereof will be described below with reference to the accompanying drawings.

In the figure, this brush device consists of a main body 1 and a brush body 3 that is driven by the main body 1 and is surrounded by a brush cover 2 approximately half its circumference.

First, the main body 1 has a motor 4 provided in a cylindrical housing 5, and the shaft of the motor 4 is connected to a drive shaft 6 that projects forward of the main body 1 via a speed reducer 7. 8 is a motor support made of an elastic material;
9 is a cooling fan for the motor 4, 10 is an operation switch for the motor 4, and 11 is a thermally responsive type current breaker. The housing 5 has a plurality of intake ports 12 on the rear surface and an exhaust port 13 on the surface, and further has a circular shape connected to the front part of a grip part 14 with a smoothly narrowed diameter. Tsuba 1
5 is formed. 16 is a bearing tube that surrounds the outer periphery of the drive shaft 6 that protrudes from the main body 1 and has its base end fixed to the frame of the motor 4, etc.;
Bearings 17 and 18 for supporting the drive shaft 6 are mounted at the tip and inside of the shaft. 19 is a knob for operating the switch 10, and a flange 20
has. This flange 20 has a previous intake port 12.
A plurality of openings 21 are provided corresponding to the openings 21, and when the motor is stopped, these openings 21 and the intake port 12 are opened.
When the switch 10 is operated via the operating knob 19 to rotate the motor 4, both the intake ports 12 and 21 are closed.
match, and the intake passage is opened. 22 is a filter placed over the opening 21, and 23 is a power cord.

The brush body 3 is obtained by planting brush bristles 25 on the outer periphery of a cylindrical base body 24 made of synthetic resin, and has a relatively large diameter for fitting the bearing tube 16 from the rear end surface of the base body 24. A fitting hole 26 and a through hole 27 for the drive shaft 6, which opens to the front end surface of the base body 24, are formed at the center of the rear end.
28 is a radial locking groove formed in the stepped surface between the fitting hole 26 and the through hole 27. That is, in the brush body 3, the base body 24 is removably inserted into the bearing cylinder 16 and the drive shaft 6 through the fitting hole 26 and the through hole 27, and the pin 29 of the drive shaft 6 is inserted into the locking groove 28. By engaging them, rotation can be prevented.

Further, the brush cover 2 that surrounds approximately half the circumference of the brush body 3 has a shaft hole 31 in its front end wall 30 that fits with the tip of the drive shaft 6, and a thumb screw 32 on the outer periphery of the collar 15 at the rear. It is fixed via.

In the above configuration, when the motor 4 is energized now, its rotation is transmitted to the drive shaft 6 via the reducer 7.
It is further transmitted to the brush body 3. Therefore, the operator can brush the cow by holding the grip part 14 of the main body 1. Furthermore, when the motor 4 is in operation, the opening 21 of the flange 20 provided on the operating knob 19 of the switch 10 matches the intake port 12, so air for cooling the motor is drawn into the main body 1 via the cooling fan 9. will be introduced in The cooled air is then discharged from the exhaust port 13 to the brush body 3 side. At this time, since a filter 22 is provided in the opening 21, hair, dander, etc. scattered during brushing will not enter into the main body 1.

By the way, the previous current breaker 11 is connected to the intake port 1.
It is provided facing the cooling air inflow path between the motor 2 and the motor 4, and is always cooled by the air. Therefore, even if the motor 4 is operated under a normal load and heat is radiated thereby, the current breaker 11 will not operate.

Next, when the brush body 3 is wrapped with hair etc. and becomes locked, the flow of cooling air disappears and cooling of the current breaker 11 is stopped. It is activated immediately by heat and cuts off the current.

As described above, the present invention includes a main body that incorporates a motor having a cooling fan and has an intake port and an exhaust port for cooling air, and a brush body that is driven by the motor and whose outer periphery is partially surrounded by a brush cover. Moreover, the cooling air path inside the main body from the intake port to the motor is equipped with a current breaker that senses the heat of the motor and opens the power supply side. Even if the brush body is pressed hard against the skin or the like and the load changes, the operation will not be stopped inadvertently, and once the brush body is locked, the current breaker will immediately operate and cut off the power to the motor. This is to prevent burnout. Therefore, it is possible to provide a brush device that provides stable operability and is also excellent in terms of safety.

[Brief explanation of the drawing]

The figure is a sectional view showing an embodiment of the brush device of the present invention. 1...Body, 2...Brush cover, 3...Brush body, 4...Motor, 9...Cooling fan, 11
...Current circuit breaker, 12...Intake port, 13...Exhaust port.

Claims (1)

[Scope of utility model registration request] A main body that includes a built-in motor with a cooling fan and has an intake port and an exhaust port for cooling air;
The cooling air path inside the main body from the intake port to the motor includes a brush body that is driven by the motor and whose outer periphery is partially surrounded by a brush cover.
This household electric brush device is equipped with a current breaker that opens the power supply side when it senses the heat of the motor.