JP4114431B2 - Drive device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of, for example, an elevator drive device having a new drive mechanism.
[0002]
[Prior art]
FIG. 3 is a perspective view showing the whole of the new drive device. Drive 10 housed in the main rope 1 in the frame 11 disposed so as to surround the sieve 2 wound around the belt 12 is wound around the three pulleys 13, 14 and 15, and the upper side of the sheave 2 The main rope 1 is arranged to be pressed against the sheave 2. A pulley (not shown) is connected to the pulley 13 and driven to rotate, and the sheave 2 and the main rope 1 are moved together through the circulation movement of the belt 12 to raise and lower the car (not shown). When the car stops on the floor of the building, a normal brake provided in the motor is operated to keep the car stationary.
[0003]
Here, the pulleys 14 and the pulley 15, in order to provide a moderate tension to the belt 12, movable in the vertical direction (e.g., composed of as bolts and nuts and slots shown in FIG. 3) are provided on the frame 11 to the .
[0004]
[Problems to be solved by the invention]
With such a mechanism, if the pressing force of the belt 12 against the sheave 2 is sufficiently ensured, there is a merit that the main rope 1 can be completely prevented from slipping, but due to the centering failure of the pulleys 13, 14, 15, when the belt 12 causes an offset or meandering, there is a possibility that the worst case the belt 12 from falling off.
[0005]
The present invention has been made in view of the above, it is an object to provide a highly reliable drive.
[0006]
[Means for Solving the Problems]
The present invention, the sieve certain arc sections of the tensile member eclipse wound around a rope or belt-shaped tension member for supporting the movable body is sheaves, the belt that circulates driven by the motor wound on the sheave while pressing towards the fitting said tension member in a driving device for driving in the longitudinal direction, the belt is wound around three pulleys, the pulley has a groove, the groove in the belt It has a rib to do .
The rib is a V-shaped rib .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is configured from the viewpoint of preventing the meandering of the belt and improving the reliability .
[0008]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Figure 1 is a sectional view showing an example of a pulley according to the present embodiment, FIG. 2 is Ru sectional view showing an example of the engagement between the pulley and the belt according to the present embodiment.
[0009]
In FIG. 1, reference numeral 20 denotes a pulley according to the present embodiment , which is rotatably provided on a shaft 22 fixed to a shaft block 21 via a bearing 23, and a side 24 is provided with a return 24 around the circumference, The grease leaking from the bearing 23 is received. Then, like donut-shaped oil absorber 25 is inserted into the return 2 4. Therefore, even if the grease leaks out, the oil is absorbed by the oil absorber 25 , so that the oil does not adhere to the belt 30 described later. Reference numeral 26 denotes a cover.
[0010]
Next , as shown in FIG. 2, for example, a V groove 20 a is provided on the outer periphery of the pulley 20. On the other hand, the belt 30 has a rib 30a on the surface facing the pulley 20, and is configured to fit into the groove 20a of the pulley 20 so that the belt 30 does not meander. This is advantageous because the meandering of the belt 30 can be reliably suppressed. Reference numeral 30b denotes a recess that contacts the main rope 1.
[0011]
Here, in the present embodiment describes an example of a V ribbed belt, which may be a ribbed belt of any shape, of course, not limited to this embodiment.
In addition, the present invention is a technique that can naturally be applied to drive devices other than elevator devices.
[0012]
【The invention's effect】
As described above, since according to the present invention meandering of belts can be prevented, it is possible to obtain a highly reliable drive.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of a pulley according to the present invention.
FIG. 2 is a cross-sectional view showing an example of an engagement relationship between a pulley and a belt according to the present invention.
FIG. 3 is a perspective view showing the whole of a new drive device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main rope 2 Sheave 12, 30 Belt 30a Rib 13, 14, 15, 20 of belt 30 Pulley 20a Groove of pulley 20 23 Bearing 24 Return 25 Oil absorber

Claims (2)

Pressed toward rope or belt-shaped tension member for supporting the movable body vignetting wound around the sheave, a constant arc sections of the tensile member belt circulating drive is wound on the sheave by the motor to the sheave While, in the drive device that drives the tension member in its longitudinal direction ,
The belt is wound around three pulleys, the pulley has a groove, the driving apparatus characterized by having a rib which fits into the groove on the belt. The drive device according to claim 1, wherein the rib is a V-shaped rib.

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