JPH0542271Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a motor brake device for converting a normal motor into a non-excitation type brake motor.

[Conventional technology]

Conventionally, geared motors, brake motors, etc.
The anti-load side bracket or the load side bracket of the motor was changed to a bracket with a built-in brake stator, and the brake motor was assembled.

[Problem that the invention attempts to solve]

Motors have different bracket shapes depending on the manufacturer. Therefore, in order to use the motor as a brake motor, it was necessary to prepare a bracket for each manufacturer. In addition, during assembly, the bracket must be removed and a new brake bracket installed, which may involve disassembling the gear section, which may affect the performance of the motor.

The object of the present invention is to attach a brake mechanism to the current motor without disassembling the bracket of the motor, thereby making it possible to create a non-excitation type brake motor.

[Means to solve problems]

In order to achieve the above object, the present invention provides a plate spring 20 having fixing mechanisms at multiple locations on the outer diameter of the bracket 4 from which the output shaft 6 of the motor protrudes;
A stator 16 containing a permanent magnet 19 and a coil 18 fixed to the side surface of the leaf spring 20 opposite to the side facing the bracket 4, and a hub fixable to the output shaft 6 protruding from the bracket 4. 1
0a, and an armature 10 fixed to the output shaft 6 so as to face the stator 16 with a predetermined gap therebetween.

[Effect]

The leaf spring 20 to which the stator 16 containing the coil 18 is fixed is fixed to the bracket 4 of the motor, and the armature 10 is connected to the output shaft 6 of the motor.
The armature 10 is fixed to the stator 16.
and facing each other with a predetermined gap between them. In this state, the magnetic flux of the permanent magnet 19 causes the leaf spring 2 to
The stator 16 is brought into pressure contact with the armature 10 by magnetic force against the elasticity of 0, and a brake is applied to the output shaft 6. When the coil 18 is energized and the coil 18 generates a magnetic flux in the opposite direction to the magnetic flux of the permanent magnet 19, the magnetic force decreases and the stator 16
Due to the return elasticity of 0, it separates from the armature 10 and the brake of the output shaft 6 is released.

〔Example〕

The structure of the present invention will be explained in detail below with reference to the embodiments shown in FIGS. 1 and 2.

A motor case 2 has a built-in motor mechanism, and an output shaft 6 of the motor is rotatably supported by an end cover or bracket 4 fixed to the opposite side of the case 2 via a bearing 8. A portion of the output shaft 6 protruding from the bracket 4 includes:
A hub 10a of the armature 10 is fixed by a known key coupling structure and a fixing screw 12. A fan 14 is fixed to the armature 10 with bolts. Reference numeral 16 denotes a ring-shaped stator containing a coil 18 and a permanent magnet 19 adjacent thereto, one side of which is fixed near the inner diameter of a ring-shaped leaf spring 20 and the outer diameter of the leaf spring 20. , four locations (not limited to four locations) on a circular line centered on the center of the output shaft 6 are fixed to the bracket 4 by four screw shafts 22 and nuts 24, as shown in FIG. ing. Said leaf spring 2
Assumed above 0. A bolt insertion hole 28 is provided at an interval of approximately 120 degrees on a circle whose diameter is slightly smaller than a circle centered on the center of the output shaft 6 passing through the screw shaft 22 insertion hole. A plate nut 30 is transparently provided between the insertion holes and communicates with the bolt insertion hole 28 .
6. It is fixed to the side surface on the installation side. An adjusting bolt 32 is screwed into the plate nut 30, and the shaft portion of the bolt 32 contacts the bracket 4 through the bolt insertion hole 28. The adjusting bolt 32 is rotated relative to the plate nut 30, and the adjusting bolt 32 is connected to the plate spring 20 at the tip thereof. In Figure 1, by adjusting the amount of protrusion in the left direction, the leaf spring 2
0 can be deformed in the axial direction, that is, in the left-right direction in FIG. 1, using the fixed portion to the bracket 4 as a fulcrum, and the opposing distance between the armature 10 and the stator 16 can be set to an appropriate value. The screw shaft 22 and nut 24 constitute a fixing mechanism for fixing the leaf spring 20 to the bracket 4. 34 is a fan cover.

Next, the operation of this embodiment will be explained.

Magnetic flux is generated from the permanent magnet 19, and the stator 1
A magnetic path is formed between the stator 6 and the armature 10, the stator 16 moves toward the armature 10 against the spring force of the leaf spring 20, comes into contact with the armature 10, and brakes the output shaft 6. Furthermore, when the coil 18 is energized and the coil 18 generates a magnetic flux in the opposite direction to the magnetic flux of the permanent magnet 19, the stator 16
is separated from the armature 10 by the spring force of the leaf spring 20, and the braking of the output shaft 6 is released. In this embodiment, the stator 1 is
6. I adjusted the gap between armature 10, but
This mechanism is not particularly limited, and the leaf spring 2
Nut 2 of the fixing mechanism for bracket 4 of
4 and the leaf spring 20 or between the leaf spring 20 and the bracket 4 for adjustment.
2 may be loosened to make a fine adjustment in the axial direction, and then the fixing screw 12 may be tightened tightly to adjust the gap. Note that this device may be provided on the load side of the motor.

〔effect〕

As mentioned above, the present invention eliminates the need to create a special bracket for the brake motor, and allows the brake mechanism to be attached to any manufacturer's motor, making it possible to use this as a brake motor without disassembling the motor. In addition, there are effects such as being able to shorten the assembly time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the main part, and FIG. 2 is a rear view. 2...Motor case, 4...Bracket, 6...
...output shaft, 8...bearing, 10...armature,
10a...Hub, 12...Fixing screw, 14...Fan, 16...Stator, 18...Coil, 20
...Plate spring, 22...Screw shaft, 24...Nut,
28...Bolt insertion hole, 30...Plate nut, 32
...adjustment bolt, 34...fan cover,
32...Motor case, 34...Bracket.

Claims (1)

[Scope of utility model registration request] A plate spring 20 having fixing mechanisms at multiple locations on the outer diameter of the bracket 4 from which the output shaft 6 of the motor protrudes is fixed to the side surface of the plate spring 20 opposite to the side facing the bracket 4. a stator 16 having a built-in permanent magnet 19 and a coil 18;
It has a hub 10a that can be fixed to the output shaft 6 protruding from the bracket 4, and an armature 10 that is fixed to the output shaft 6 so as to face the stator 16 with a predetermined gap therebetween. A motor brake device featuring: