JP3085496U - Inking device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To use a gyro mechanism to vibrate a gyro mechanism to cut frictional resistance of a bearing when using the gyro mechanism, thereby improving the restoration accuracy of the gyro mechanism and increasing the inking precision. To provide a blackout device that can perform SOLUTION: An apparatus base frame 1 is provided with a beam projector 6 which is pivotally supported by a pivoting means 7 comprising a gyro mechanism using bearings so as to be swingable in a hanging state so as to always come to a vertical position. In a marking device in which the beam 11 from the beam projector 6 is projected from the projection window 12 to the outside, a minute vibration is applied to the gyro mechanism of the pivot support means 7 to cut the frictional resistance of the bearing. Means 9
Is provided on the device base frame 1.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a blackout device used in a construction work site or the like, and relates to a blackout device for blacking a ceiling, a wall, a floor, or the like with a beam.

[0002]

[Prior art]

 This type of inking device is equipped with a beam projector which is pivotally supported on a device base frame so as to be always suspended at a vertical position by a pivoting means comprising a gyro mechanism so as to be able to swing freely. From the projection window to the outside.

In the gyro mechanism constituting the above-mentioned pivot means, a bearing is used on a shaft supporting portion such as a ring member supported by a pin to reduce frictional resistance of the portion, and a beam projector is used. A weight may be provided at the lower end of the beam projector so that it is always kept in a vertical position effectively.

[0004] In order to improve the restoration accuracy of the gyro mechanism that always keeps the beam projector in the hanging state at the vertical position as described above, it is preferable to use a bearing having as small a frictional resistance as possible. The weight should be as heavy as possible. To reduce the weight, the distance from the position of the gyro mechanism to the weight should be as long as possible.

[0005]

[Problems to be solved by the invention]

 However, for convenience, a product with a small size and a light weight is desired as a blackout device. Therefore, how to improve the restoration accuracy of the gyro mechanism while reducing the size and the weight of the product as much as possible is a problem.

[0006] Therefore, the inventor of the present invention determines that the restoring accuracy of the gyro mechanism mainly depends on the frictional resistance of the bearing used in the gyroscopic mechanism, and this frictional resistance greatly affects the restoring accuracy. When using the blackout device, vibration is applied to the gyro mechanism to reduce the frictional resistance of the bearing, thereby improving the restoration accuracy of the gyro mechanism and improving the blackout accuracy. The aim is to provide an inking device that can be enhanced.

[0007]

[Means for Solving the Problems]

 According to the first aspect of the present invention, the apparatus base frame 1 is pivotally supported by a pivoting means 7 including a gyro mechanism 8 using bearings 17 and 19 so as to be always in a vertical position so as to be in a hanging state. In a blackout device equipped with a beam projector 6 and projecting the beam 11 from the beam projector 6 to the outside from a projection window 12, the gyro mechanism 8 of the pivoting means 7 is subjected to minute vibration to provide a bearing. It is characterized in that a microvibration generating means 9 for cutting the frictional resistance of the devices 17 and 19 is provided on the device base frame 1.

According to a second aspect of the present invention, in the blackout device according to the first aspect, the microvibration generating means 9 is provided at a position close to the gyro mechanism 8 of the pivoting means 7. .

According to a third aspect of the present invention, in the blackout device according to the first or second aspect, the minute vibration generating means 9 is operated for several seconds by a timer device 20.

[0010]

[Embodiment of the invention]

 FIG. 1 is a perspective view showing the basic structure of the blackout device according to the present invention. In this figure, reference numeral 1 denotes an apparatus base frame, which is a disk-shaped lower frame 2 and a substantially donut-shaped upper frame 4 horizontally supported and fixed by a plurality of columns 3 erected on the lower frame 2. And a plurality of support legs 5 provided on the lower frame 2. Reference numeral 6 denotes a beam projector, which is pivotally supported on the apparatus base frame 1 by a pivoting means 7 so as to be always in a vertical position so as to be in a hanging state. Reference numeral 9 denotes a micro-vibration generating means for applying micro-vibration to the gyro mechanism 8 of the pivot means 7 (see FIGS. 2 and 3).

Since the beam projector 6 has a well-known structure, detailed illustration is omitted, but the beam 11 emitted from the laser diode for light source provided inside the cylindrical main body 10 is shown in FIG. In addition, the light is projected outside from a projection window 12 protruding from a side portion of the cylindrical main body 10 along a direction orthogonal to the central axis O of the cylindrical main body 10. A weight 13 is attached to the lower end of the cylindrical main body 10.

A pivoting means 7 for pivotally supporting the beam projector 6 in a hanging state so as to always be in a vertical position includes a donut-shaped upper frame 4 forming the apparatus base frame 1 and a central opening of the upper frame 4. The gyroscopic mechanism 8 is interposed between the beam projector 6 and the upper end shaft portion 10a of the cylindrical main body 10 of the beam projector 6 protruding into the inside 4a.

As shown in FIGS. 2 and 3, the gyro mechanism 8 places the upper end shaft 10 a of the cylindrical main body 10 between the upper end shaft 10 a and the central opening 4 a of the donut-shaped upper frame 4. The inserted ring member 14 is rotatably supported by a pin 16 around a first axis 15a extending in the diameter direction of the ring member 14, and one end of each pin 16 is connected to the upper end shaft portion 10a of the cylindrical main body. The ring member 14 is supported by a bearing 17, and the ring member 14 extends in the diameter direction of the ring member 14 with respect to the donut-shaped upper frame 4 and is rotated by a pin 18 around a second axis 15b orthogonal to the first axis 15a. It is pivotally supported as much as possible, and one end of each pin 18 is pivotally supported on the ring member 14 by a bearing 19. The beam projector 6 is swingably supported in all directions, The beam projector 6 is always held at a vertical position by its own weight.

In this case, if there is no frictional resistance between the bearings 17 and 19 of the gyro mechanism 8 and the pins 18 and 18, the beam projector 6 attenuates while swinging from the non-vertical position, and finally Although the beam projector 6 stops precisely at the vertical position, the beam projector 6 cannot accurately stop at the vertical position because the frictional resistance of the bearings 17 and 19 is actually generated to some extent. Due to the frictional resistance of the vertical position, the vehicle may come to rest before the vertical position and become slightly inclined. In that case, a considerable error occurs in the projection angle of the beam 11 by the beam projector 6, and the accuracy of blackout decreases.

In the above case, the microvibration generating means 9 applies microvibration to the gyro mechanism 8 of the pivoting means 7 to temporarily cut the frictional resistance of the bearings 17 and 19. The vibration generating means 9 is composed of, for example, a small vibration motor used as a bambulator for notifying an incoming call of a mobile phone, a piezoelectric ceramic vibrator, or the like. The fine vibration generating means 9 is provided at a position close to the gyro mechanism 8 of the upper frame 4 forming the device base frame 1 as shown by a solid line in FIG. Since the micro-vibration generated by 9 can be effectively transmitted to the gyro mechanism 8, it is possible to use a smaller and less expensive vibration motor or piezoelectric vibrator.

The micro-vibration generating means 9 indicated by the phantom line in FIG. 1 shows a case where the micro-vibration generating means 9 is installed on the lower frame 2 side. In this case, the micro-vibration generating means 9 is located at a relatively distant position from the gyro mechanism 8. It is preferable to use a vibration motor that vibrates more strongly than the case shown by the solid line in FIG.

As shown in FIG. 1, the micro-vibration generating means 9 is electrically connected to a power source battery 21 via a timer device (control circuit) 20, and is operated by the timer device 20 for several seconds. Has become. The power source battery 21 is a battery for supplying electricity to the light source of the beam projector 6 and is connected to the beam projector 6.

The timer device 20 limits the operation time of the micro-vibration generating means 9 to a minimum required period of several seconds to save power. For example, a power switch (not shown) for a beam projector is used. After a few seconds from the start of the projection of the beam 11 from the beam projector 6, the micro-vibration generating means 9 is operated for one to two seconds, or the power switch is turned on, and the beam projector is turned on. After the start of the projection of the beam 11 from 6, the micro-vibration generating means 9 is set to intermittently operate, for example, every few minutes for one to two seconds.

In using the blackout device having the above-described configuration, when the blackout device is placed at a required position on the floor in the room where the blackout is performed, the pivoting means 7 attaches the blackout device to the device base frame 1. Since the pivotally supported beam projector 6 attenuates while oscillating and becomes stationary, the power switch is turned on in this state, and projection of the beam 11 from the beam projector 6 is started. In this case, if the timer device 20 is set so that the microvibration generating means 9 operates for one second, for example, two seconds after the power switch is turned on, the power switch is turned on for two seconds. Later, the micro-vibration generating means 9 is operated, and micro-vibration is applied to the gyro mechanism 8 of the pivot support means 7 for only one second.

When the micro-vibration is applied to the gyro mechanism 8 of the pivoting means 7, the frictional resistance of the bearings 17 and 19 to the pins 16 and 18 of the gyro mechanism 8 is temporarily cut. The beam projector 6 which has been stationary in the inclined posture on the near side of the vertical position as shown by the imaginary line in FIG. 3 returns to the accurate vertical position as shown by the solid line in FIG. Accordingly, the beam 11 projected from the projection window 12 of the beam projector 6 is corrected from the state shown by the imaginary line in FIG. 2 to the state shown by the broken line.

In this case, in short, when the frictional resistance of the bearings 17 and 19 inside the gyro mechanism 8 is cut by the micro vibration of the micro vibration generating means 9, the gyro mechanism 8 moves the beam projector 6 to the vertical posture. In the holding state, the beam projector 6 that was not in the vertical position can be returned to the accurate vertical position and stopped. Therefore, the restoration accuracy of the gyro mechanism 8 is improved, and the error in the projection angle of the beam 11 can be suppressed to 1 second or less.

In FIG. 2, a state in which the beam projector 6 is stationary in an inclined posture in front of the vertical position due to the frictional resistance of the bearings 17 and 19 is indicated by an imaginary line. The projector 6 is excessively displayed for easy understanding of the state in which the projector 6 is inclined with respect to the vertical posture, and the degree of the inclination is actually so small that it cannot be seen.

As shown by the solid line in FIG. 1, when the micro-vibration generating means 9 is provided at a position close to the gyro mechanism 8 of the upper frame 4 forming the apparatus base frame 1, the generated vibration is generated. Even if the vibration is relatively weak, the vibration can be effectively transmitted to the gyro mechanism 8.

In the above-described embodiment of the ink-marking device, the device base frame 1 is left exposed as shown in FIG. 1, but the device base frame 1 is usually provided with a cover that covers it. . In addition, the ink marking device is provided with a beam projector 6 which is pivotally supported on the device base frame 1 by a pivoting means 7 comprising a gyro mechanism 8 so as to be freely suspended so as to be always at a vertical position. Any form may be used as long as it is done.

[0025]

[Effect of the invention]

 The inking device of the invention according to claim 1 is provided with a microvibration generating means for applying a microvibration to the gyro mechanism of the pivoting means to cut the frictional resistance of the bearing in the apparatus base frame. When using the device, when micro vibration is applied to the gyro mechanism of the pivoting means by the micro vibration generating means, the friction resistance of the bearing installed in the gyro mechanism is temporarily cut, thereby causing the gyro mechanism to project the beam projector. The beam projector is maintained in the vertical position, and the beam projector that was not in the vertical position can be returned to the accurate vertical position. Therefore, according to the blackout device, the restoration accuracy of the gyro mechanism can be improved, and the blackout accuracy can be increased.

According to the second aspect of the present invention, if the micro-vibration generating means is provided at a position close to the gyro mechanism of the pivoting means, the micro-vibration generated by the micro-vibration generating means is effectively applied to the gyro mechanism. Therefore, it is possible to use a smaller vibration generating means.

[0027] As in the invention according to claim 3, if the micro-vibration generating means is operated for several seconds by the timer device, the operation time of the micro-vibration generating means is limited to a minimum necessary to save power. Can be planned.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a basic structure of a blackout device according to the present invention.

FIG. 2 is a vertical sectional view of a gyromechanism portion of a pivoting means in the blackout device.

FIG. 3 is a horizontal sectional view of a gyromechanism portion of a pivoting means in the blackout device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device base frame 6 Beam projector 7 Pivot means 8 Gyro mechanism 9 Micro vibration generating means 17, 19 Bearing of gyro mechanism 20 Timer device

Claims (3)

[Utility model registration claims] An apparatus base frame is provided with a beam projector which is pivotally supported by a pivoting means comprising a gyro mechanism using a bearing so as to be swingable in a hanging state so as to always come to a vertical position. In a blackout device that projects the beam from the device from the projection window to the outside, a microvibration generating means for cutting the frictional resistance of the bearing by applying microvibration to the gyro mechanism of the pivoting means is provided on the device base frame. Ink marking device provided. 2. The blackout device according to claim 1, wherein the microvibration generating means is provided at a position close to a gyro mechanism of the pivot means. 3. The micro vibration generating means is operated for several seconds by a timer device.
A blackout device according to item 1.