JP2600877Y2 - Motor with built-in brake - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor having a built-in brake.

[0002]

2. Description of the Related Art Conventional motors with built-in brakes are:
For example, it is configured as shown in FIG.
The brake shown in FIG.
A fan motor 3 composed of a drive motor and a cooling air fan is mounted via the motor, and a cooling air guide cover 4 extends beyond the outer circumference of the brake 2 to the outer circumference of the motor body 1.

[0003]

However, the conventional motor with a built-in brake shown in FIG. 3 has the following problems. (i) Brake maintenance is difficult. (ii) Since the cooling air flow path is long, a pressure loss occurs and the cooling capacity is reduced.

[0004]

SUMMARY OF THE INVENTION In order to solve the conventional problems, the present invention provides a motor with a built-in brake, which includes three fan motors and one fan motor on an outer peripheral surface of a motor body in which a stator and a rotor are housed. Provided is a motor with a built-in brake in which a terminal box assembly is attached to one of the three fan motors at substantially equal positions in the circumferential direction, and a part or all of the three fan motors can be selectively operated. What you want to do.

[0005]

The outer peripheral surface of the motor body can be directly cooled by cooling air from three fan motors attached to three locations on the outer peripheral surface of the motor body. Some or all of the fan motors are selectively operated to adjust the amount of cooling air from the fan motors.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a brake built-in motor according to the present invention will be described below with reference to FIGS. 1 and 2, reference numeral 11 denotes a motor body, which houses a rotor including a rotor core 12 and a stator including a stator core 13 and a stator coil 14. Fifteen
Denotes a brake, which is assembled to an axial end of the motor body 11. Reference numeral 16 denotes a rotation detector, which is attached to an axial end of the brake 15. 17a, 1
7b and 17c are three fan motors composed of a drive motor and a cooling air fan, 18 is a terminal box assembly, and the three fan motors 17a, 17b, 17c and the terminal box assembly 18 are provided on the outer peripheral surface of the motor body 11. The outer peripheral surface of the motor main body 11 can be directly cooled by being attached to one of the four fan motors 17 at substantially equal positions in the circumferential direction.
Some or all of the fan motors a, 17b, and 17c are selectively operable according to the degree of heat generation of the motor main body 11, and the fan motors 17a, 17b, and 17c
It is possible to adjust the amount of cooling air from

[0007]

[Effect of the invention] The motor with a built-in brake according to the invention is
The configuration described above has the following excellent effects. The cooling air from the fan motor can directly cool the outer peripheral surface of the motor body. It is possible to selectively operate some or all of the three fan motors to reduce the load.

[Brief description of the drawings]

FIG. 1 is a half sectional side view of an embodiment of a motor with a built-in brake according to the present invention.

FIG. 2 is a diagrammatic front view of FIG. 1;

FIG. 3 is a schematic side view of an example of a conventional motor with a built-in brake.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Motor main body 12 Rotor core 13 Stator core 14 Stator coil 15 Brake 16 Rotation detector 17a, 17b, 17c Fan motor 18 Terminal box assembly

Claims (1)

(57) [Scope of request for utility model registration] 1. A motor having a built-in brake,
Three fan motors and one terminal box assembly are attached to the outer peripheral surface of the motor main body in which the stator and the rotor are housed, and one terminal box assembly is located at approximately four equally spaced positions in the circumferential direction. Or, all the fan motors can be selectively operated, so that the outer peripheral surface of the motor main body can be directly cooled, and the amount of cooling air from the fan motor can be adjusted according to the degree of heat generation of the motor main body. A motor with a built-in brake.