JPS5817875A - Variable vibrator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention The present invention relates to an improvement of a variable vibrator in which a fan-shaped fixed weight and a fan-shaped movable weight are installed coaxially, and the amplitude can be changed by changing the angle of the sector-shaped movable weight. Also, the angle of the sector-shaped movable weight can be freely changed to change the amplitude as appropriate.

The most commonly used variable vibrator is a vibration motor, which has a configuration in which a fan-shaped fixed weight and a moving weight of the same shape are fixed to the motor output shaft.
It is designed so that when fixed to the motor output shaft at go'tv angle intervals, the amplitude is calculated to be zero, and when fixed to the motor output shaft with the fixed weight and the movable weight in the same phase, the amplitude is maximum.

The fixed angle of the movable weight can be changed freely, and the above-mentioned amplitude can be changed between zero and maximum amplitude according to the application, but this installation requires changing the motor output shaft. Since the operator has to stop and disassemble the cover to install it, it is not possible to arbitrarily change the mounting angle while checking the amplitude while driving. The same applies to other types of variable vibrators that are driven by a motor and have a fixed weight and a movable weight attached to the main shaft.

In view of the above, the present invention' is designed such that, in normal operation, a vibrator frame provided with a sector-shaped fixed weight and a shaft to which a sector-shaped movable weight is fixed are rotated coaxially and at the same axial speed inside the mounting frame to set the desired settings. Amplitude vibrations are applied to the mounting frame as well as the device to which the frame is fixed, and by switching the clutch at appropriate times during operation, the shaft is rotated independently by the second boob to correspond to the sector-shaped fixed weight of the sector-shaped movable weight. By converting the angle, it is possible to freely set separate amplitudes, and the rotation control direction of the shaft can be controlled in two directions by switching the clutch without connecting the fan-shaped fixed weight and the fan-shaped movable weight with an axial clutch or the like. It is structured so that it can be used in any of the following ways.

A preferred embodiment of the invention will be described with reference to the accompanying drawings.

I in the figure is a mounting frame that is attached and fixed to a device that requires vibration, and a vibration frame 3 with a side plate as a fan-shaped fixed weight is placed in the center of the inner part of the mounting frame. A hollow shaft 41,j fixed to the side plate is pivotally supported on the mounting frame l by a bearing 6.7.

One of the hollow shafts DA protrudes from the mounting frame 1 to secure the first pulley t to its outer periphery, and a seventh clutch engagement tooth ring DT is integrally provided or attached to the side surface of the first pulley 1.

A shaft 10 is inserted into the center of the hollow shaft S and the mounting frame l from the outside and is rotatably supported by bearings // to /l. A mantle /g is fitted and fixed on the outside of the shaft 10 protruding from the hollow shaft DA, and the mantle /3 is provided with a spline 16 on its outer periphery close to the first pulley r, and the spline shown in FIG. The second pulley /1 is freely rotatably fitted to the left side of /4 via a bearing l, and the second clutch tooth ring 19 is integrally attached to the side surface of the first pulley r corresponding to the clutch engagement tooth ring 9. providing or installing, first
A constant distance (L) in the axial direction is created between the clutch gear 9 and the second clutch gear /9P, 4. or,
The outer end of the shaft 10 is supported by a bearing box J/ via a bearing 20. λ2 is between bearing 20 and bearing 17 and between bearing /7 and spline /
This is a spacer tube fitted into the cannula IS between the end face of B and the end face of B.

The sector-shaped movable weights 3 that are closely matched are fixed.

A ring-shaped switching clutch is fitted in the above-mentioned spacing direction so as to be freely movable on the spline 1B, and is restrained by the spline 16 in the rotational direction, and is engageable with the first clutch gear 9 on both end surfaces thereof. A corresponding first switching clutch tooth S, and a second clutch tooth S that is engageable with the second clutch tooth 19.
A switching clutch tooth roller is provided, and a switching command transmission wheel core is fitted to the outer periphery of the switching clutch via p, 7 bearings,
A cylinder 300 and a rod 31 supported swingably by an axle 9 are connected to the ring-shaped arm 2j on the outer periphery of the transmission wheel core.

The cylinder 30 moves the rod 31 as shown by the arrow in two directions σ, moves the switching clutch Jl by the spline 16 of the shaft IO via the ring arm col I and the switching command transmission wheel core, and connects the first switching clutch tooth to the spline 16 of the shaft IO. By engaging the first clutch gear 9 with the first clutch gear 9, the first pulley t connects the hollow shaft DA, j, the vibration frame 3, and the △ shaft IO to connect the fan-shaped fixed weight and the fan-shaped movable weight 3.
and the shaft 10 can be rotated in conjunction with each other at the same shaft speed, or the first switching clutch tooth 3 can be engaged with the second clutch tooth 19 as shown in Fig. 1, and only the shaft 10 can be rotated independently by the second pulley /1. Accordingly, the angle of the fan-shaped movable weight 3 corresponding to the fan-shaped fixed weight can be changed arbitrarily.

The belt 3λ, which is placed around the first pulley t, is driven by a continuously variable speed motor (not shown). The belt 33 placed around the second pulley/1 can be driven by the same motor as described above, but it can also be driven by another motor. When driven by the same motor as described above, the effective diameter of the second pulley/1 is made slightly smaller or slightly larger than the effective diameter of the first pulley t, so that each of the first pulley t and the first pulley r is Change the rotation speed.

In the above embodiment, the fan-shaped fixed weight 2 and the fan-shaped movable weight 23 have different radii, and the fan-shaped fixed weight 2 formed by the side plates of the vibrating frame 3 has side plates (fan-shaped fixed weights) on both sides thereof. Although the weight of the connecting materials such as the cylindrical and rod-shaped parts that connect the parts 9 and 9 is added, the weight balance of both the weights and 23 can be made almost uniform by reducing the thickness. Of course, since zero amplitude control may not be necessary, the weight balance may not need to be exact. The fan-shaped fixed weight and the fan-shaped movable weight do not necessarily have to be fan-shaped. Here, the fan shape simply follows the shape of the fixed weight and movable weight of the conventional variable vibrator (mentioned above), in which the motor is stopped and the cover is removed to adjust the amplitude. Make sure that the weight and movable weight are fan-shaped.

This is for the same reason that there is no principle stating that

To explain the operation of this embodiment, when the corresponding angle between the fan-shaped movable weight 3 and the fan-shaped fixed weight is set to a phase difference of tto O by independent rotation of the shaft 10 as shown in FIG. The frequency is theoretically zero, and the third
If the phases are the same as shown in the figure, the frequency will theoretically reach its maximum.

In order to convert the above-mentioned corresponding angle by independent rotation of the shaft 10 of the sector-shaped movable weight 3, the rod 31 is pulled to the left in FIG. 1 by the cylinder 30, the switching clutch J4+ is moved, and the second switching clutch tooth 2t is No. Koburi! This is done by engaging the second clutch gear 19 of the first clutch gear 19 and separating the first switching clutch gear 3 from the first clutch gear 9 of the first pulley r.

At this time, the first pulley r is driven by the belt 3λ, and even when the hollow shaft member da, j, the vibration frame 3, and the fan-shaped fixed weight 2 are being rotated by the first pulley j△, the shaft 10 is differentially rotated. The relative angle between the sector-shaped fixed weight and the sector-shaped movable weight 23 is changed from a zero angle with no phase difference to a phase difference P of /100, /.

Rotate until it shows. Also, a fan-shaped fixed weight 2 and a fan-shaped movable weight 2
3 at the same shaft speed, the rod 31 is moved to the right in FIG. 1 by the cylinder 30, and the switching clutch 2t
This is done by connecting the clutch to the first pulley r and simultaneously releasing the clutch connection to the first pulley l.

As clarified from the above explanation, the present invention is directed to a hollow shaft that forms the drive shaft of the fan-shaped fixed weight 2 provided on the side plate of the vibrator frame 3.
and the shaft 10 forming the drive shaft of the sector-shaped movable weight 23 are provided coaxially, the first pulley l is attached to the hollow shaft l on the outside of the mounting frame l, the 21st-reit is attached to the shaft io, and the shaft The first switching clutch J4+ is installed on the shaft 10 so as to enable reciprocating movement in the direction and disable rotation.
The hollow shaft DA and the shaft IO are rotated together at the same shaft speed by engaging with the pulley t, or by engaging the clutch q with the second pulley /r. Only the shaft is driven by the second pulley /r, and while the first pulley t is being driven to rotate,
The shaft 10 is switched from coaxial speed interlocking with the first pulley t to rotation by the second pulley /r, and by the switching configuration,
The fan-shaped fixed weight 2 and the fan-shaped movable weight 23 are fixed at the same axial speed while maintaining the set amplitude, or the fan-shaped movable weight 23 is
The above-mentioned amplitude can be freely changed by changing the angle corresponding to the fan-shaped fixed weight, and for a device in which the mounting frame l is fixed, the fan-shaped fixed weight 2 and the fan-shaped movable weight 3 are moved at the same axial speed. Even during rotation and vibration, the amplitude can be freely adjusted without stopping the rotational drive of the first pulley t, and in order to change the amplitude, a switching clutch or ? The amplitude adjustment can be performed with an extremely simple configuration by simply operating 41 outside the mounting P, /3 frame l.

[Brief explanation of the drawing]

The accompanying drawings show one embodiment of the present invention, in which Fig. 1 is a longitudinal sectional plan view of the central part, Fig. 2 shows the adjustment of zero amplitude, and Fig. 3 shows the adjustment of the maximum amplitude. It is a side view cut along the line A-A. Child l - mounting frame, 2 - sector-shaped fixed weight, 3 - frame to vibration, da - hollow shaft, r - first pulley, 9 - first clutch gear, l
O→shaft, l≦→spline, /I-+second pulley, /ri→second clutch gear, 23→sector-shaped movable weight, 2q→
Switching clutch, 27 → switching command transmission wheel, 3 pieces → belt,
33 → Belt applicant Yoshio Tojo 454

Claims (1)

[Claims] A transducer frame having a fan-shaped fixed weight provided on the side wall is built into the mounting frame, and hollow shafts at both ends of the transducer frame are rotatably supported by the mounting frame, and the hollow shafts protrude outside the mounting frame. A first boob is fixed to the shaft, a shaft is rotatably inserted through the center of the hollow shaft and the vibrator frame, a fan-shaped movable weight corresponding to the fan-shaped fixed weight is fixed to the shaft, and the second boob is rotated. A switching clutch is fitted to the shaft with free play, and a switching clutch is fitted to the shaft with only sliding movement, and the rotation of the first or second boot is transmitted to the rear shaft by the switching operation of the switching clutch. The shirt/

P. A variable vibrator characterized in that the amplitude of a sector-shaped movable weight fixed to two points is converted by converting the phase corresponding to the sector-shaped fixed weight.