JPH11257962A - Swing stopping structure of suspended body and laser apparatus for setting-out which is equipped with the structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure horizontal positions of a suspended body and further of an apparatus like a laser collimator arranged above the suspended body, and at need, maintain them in attitudes inclined to desired directions by preventing the suspended body from swinging, by attracting a brake plate which has swung together with the suspended body when it has returned to a vertical attitude, with an electromagnet. SOLUTION: A brake plate 6 having a curved surface along a swing virtual line is movably engaged along a suspended body 2 with the lower adjacent portion of the swingably suspended body 2. At a desired time, one or a plurality of electromagnets 8 which are arranged facing the surface of the brake plate 6 are turned on, and a magnetic attractive force is generated in the electromagnets 8. By the attractive force, the brake plate 6 is moved in the direction of the attractive force, and can be attracted by the electromagnets 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of fitting an approximately donut-shaped brake plate having a curved surface along a virtual oscillating curve so as to be vertically movable along a suspension body and operating an electromagnet when desired. The present invention relates to a suspension suspension structure for suspending the suspension body that can stop or swing the suspension body together with the brake plate by sucking or pressing the brake plate, and a blackout laser device having this structure.

[0002]

2. Description of the Related Art As a means of marking a straight line and a horizontal line at a construction site, a black ink basin has been conventionally used. However, if a line made of black ink is applied to a building material, the building material becomes soiled. Ink-out work requires two people, a person with an inkwell and a person with a drawn-out ink thread. In addition, since inking work requires skill, laser light is now used as an alternative to the inkwell. Laser devices (laser marking devices) for projecting a linear video image on a wall surface and a ceiling surface of a room have been developed and used in large numbers.

[0003] In this type of conventional ink-marking laser device, as shown in FIG. 7, a laser sight 51 provided with a module 50 for irradiating a laser beam is provided on an upper portion of a base via a gyro 53. , The module 50
The laser light A emitted from the camera passes through a cylindrical rod lens arranged in the laser light passage at the end of the module 50, and thereby a straight line image L1 and a straight line of the laser light are projected onto the projection surfaces of the indoor wall surface 55 and the ceiling 56. This video L
An image L2 of a straight line orthogonal to 1 is projected.

[0004] In the ink jetting laser device, an upper end of a rod-shaped or cylindrical suspension 54 is attached to the center of the gyro 53, and the suspension 54 is suspended. The lower body 54 is freely swingable around the gyro 53, and the vertical position restoring force by the weight of the suspension body 54 can accurately set the position when the apparatus is placed on the floor. And the laser sight above it can be oriented directly upward, opposite to the vertical.

[0005] That is, the vertical point of the present apparatus can be easily known from a spot image by a laser beam irradiated downward from the lower part of the suspension body, and the vertical point is an extension of the vertical line based on the vertical point. A linear image can be projected on the ceiling surface by irradiating a laser beam toward the ceiling, and this image allows the user to know, for example, the mounting position of the fluorescent lamp on the ceiling surface.

As described above, the suspension body 54 recovers the vertical posture by its own weight. However, if the recovery force is delayed, that is, if the suspension body oscillates forever,
The laser sight at the upper part swings, and the image formed by the laser light irradiated toward the wall surface, the ceiling surface, and the like also shakes.

For this reason, as shown in FIG. 8, a recent disk marking laser device has a flat disk-shaped brake plate 58 fixed to the lower portion of the suspension body 54, while the upper and lower brake plates 58 are fixed. A plurality of pairs of opposing permanent magnets 59a and 59b are provided at locations having a fixed interval.
Some have been provided with a rocking stop structure in which a brake is applied to the rocking of the rocking plate 58 by the suction force caused by the contact between a and 59b.

[0008]

However, according to the swing stop structure of the prior art inking laser device 52 described later, when the brake plate 58 swings together with the suspension 54, the brake plate 58 is moved up and down. In order to swing between the permanent magnets 59a and 59b provided at the position, that is, when the brake plate 58 has a flat shape, when the brake plate 58 swings, the shake occurs as shown in FIG. However, if there is this deviation, the permanent magnets 59a, 59b
The swing stop force by the magnetic attraction force is such that the swing of the brake plate 58, that is, the suspension body 54 is reduced, and the stop position is stabilized when the suspension body is vertically oriented by its own weight.

For this reason, when an external force is applied to the device and the suspension stops at a position other than the vertical position, or when the user walks on the floor on which the device is placed, the swing is transmitted to the suspension and the suspension is transmitted. There was not a little shaking of the lower body.

The inventor of the present invention has been diligently studying the various problems of the prior art inking laser apparatus, and as a result, has completed the present invention. But I came to the conclusion that it could be applied. So the purpose is,
A brake plate having a curved surface along an imaginary swing line and having an opening in the center corresponding to the outer peripheral shape of the suspended body is provided at a position near the lower portion of the suspended body that is freely swingable. It is fitted movably along, and when desired, especially when the suspension stops swinging due to its own weight and recovers the vertical direction,
By turning on one or more electromagnets provided to face the surface of the brake plate, or by repeatedly turning on these electromagnets several times during the swinging of the suspension, the suspension is placed in a vertical posture. By stopping the swinging of the suspended body by adsorbing the brake plate to the tip, the vertical posture of the suspended body is maintained accurately, and the vertical posture is stabilized. A swing stop structure of a suspension body that can move the laser sight with a fingertip and stop it at a desired inclination and irradiate the laser sight from the laser sight in a diagonal direction, and a laser device for marking out equipped with this structure The purpose is to provide.

[0011]

According to a first aspect of the present invention, there is provided a swing stop structure for solving the above-mentioned problems. The swing stop structure is provided at a position near a lower portion of a swing body suspended swingably. A brake plate having a curved surface along the oscillating imaginary line and having an opening formed in the center thereof in conformity with the outer peripheral shape of the suspension body is movably fitted along the suspension body. When one or a plurality of electromagnets provided opposite to the surface of the brake plate are turned on, the brake plate is attracted to the electromagnet tip and the suspension of the suspension together with the brake plate stops. It is characterized by the following.

The suspension used in the present construction is suspended by a gyro provided on an upper part of a base such as a footrest. A table is provided on the gyro, and desired equipment such as a laser sight or various measuring devices is provided on the table, and these apparatuses are also swung with the swing of the suspension body. It is supposed to.

The swinging motion of the hanging body is to return the inclination of these devices to a horizontal position by the vertical posture restoring force of the weight of the hanging body. If there is, it is generated naturally due to vibration at the time of installation, and is not generated by applying a special external force.

If the swing of the suspension body does not stop immediately, the image formed by the laser beam emitted from the laser sight will continue to shake, and the work efficiency will be reduced, and accurate work will not be possible. This is prevented by the brake plate and the electromagnet that brakes the vibration of the brake plate.

Although the structure in which the brake is applied to the brake plate to converge its swing is also used in the conventional ink jet laser device as described above, in the configuration of the present invention, the following points are taken into consideration. Different from structure. (A) In the conventional structure, the brake plate has a flat shape, whereas in the present structure, the brake plate is formed by a curved surface along the imaginary swing line. (B) In the conventional structure, the brake plate is fixed to the lower part of the suspension, whereas in this configuration, the brake plate is movable along the suspension. (C) In the conventional structure, the suspension of the suspension, that is, the suspension of the brake plate is performed by the attracted force of the contact generated between the pair of permanent magnets located at intervals above and below the brake plate.
In this configuration, the brake plate is attracted to the tip of the electromagnet or the brake plate is pressed by the tip of the electromagnet to stop the swing.

To explain the above (a), the brake plate of this configuration has a disk shape in plan view, but the shape is not flat but formed along the imaginary swing line. This is because even when the brake plate swings, the distance between the brake plate and the electromagnet is always kept constant, so that the suction force or the pressing force of the electromagnet is constantly and uniformly applied to the brake plate, and the swing This is because the operation can be stopped accurately and in a stable state.

The suspension body and the brake plate do not always swing in a fixed direction, but can swing in any direction. Therefore, the imaginary swing line described above is an imaginary swing line extending in the direction of the plane viewed from the vertical point, and the brake plate corresponding thereto is gradually curved upward from the center toward the peripheral end. It has become.

In the case of the above (b), the brake plate is fitted so as to be movable against the suspension body.
Has a great relationship with That is, in the present configuration, the electromagnet is provided at a position having an integral interval with respect to the surface direction of the brake plate, but such a constant interval is provided so that the brake plate and the end of the electromagnet always contact. In this state, a frictional force is applied to these contact surfaces when the brake plate swings, and the suspended body does not recover a stable and accurate vertical posture. For this reason, if an appropriate constant interval is provided for sucking the brake plate, it is necessary to move the brake plate in the direction in which the electromagnet sucks the brake plate. The means for providing the constant interval will be described in detail in the description of the third and fourth configurations described later.

Of course, if the brake plate is placed on the upper surface of each magnet, a frictional force is generated between the brake plate and each magnet when the brake plate swings, which hinders the swing. In this regard, a third or fourth point will be described later.
In this configuration, the problem is solved by preventing the brake plate from directly contacting the front end of the electromagnet.

The brake plate used in this configuration is
It is required that the material be at least attracted by a magnetic force, and among these, a material formed of silicon or a silicon-containing thin plate material having a high magnetic attraction force is preferable.

The electromagnets are provided at several positions opposite to the surface of the brake plate at equal and even intervals from the center of the brake plate so that the attraction force or pressing force of the electromagnet is evenly applied to the brake plate. In addition, the reason why a single electromagnet is described in this configuration is to note that a similar effect can be obtained even if a donut-shaped electromagnet is used in plan view.

The structure for stopping the brake plate by the magnetic attraction force will be described. The switch is pressed by a finger to turn on the electromagnet, and a magnetic attraction force is generated at the tip thereof.
By the magnetic attraction force, the brake plate is moved toward the tip of the electromagnet and is attracted, thereby stopping the swing of the suspension body together with the brake plate.

A structure for pressing the brake plate instead of this structure will be described. By pressing a switch with a fingertip to turn on the electromagnet and projecting the tip evenly to press the brake plate, the suspension plate is pressed together with the brake plate. Stop shaking. In this case, it is necessary that the brake plate does not move more than a certain amount with respect to the suspension body so as to receive the pressing by the tip of the electromagnet. In this case, the brake plate may not be made of a material having a magnetic attraction.

The on / off operation of the electromagnet is performed by a switch operated by a fingertip. The power source varies depending on the device to be mounted. It is preferable that the battery is a battery, similarly to each module for irradiating.

By the way, an opening having a shape and a size corresponding to the outer periphery of the suspension body is opened at the center of the brake plate, and the brake plate is fitted to the suspension body. With the shape just formed, even if the brake plate is fitted to the suspension, it is difficult to obtain a stable posture of the brake plate.

The second configuration of the present invention addresses this problem, and the opening is formed by a tubular portion formed at the center of the brake plate in plan view. That is, since the cylindrical portion has a height (length), the sliding contact surface in the longitudinal direction of the suspension body becomes long, and the posture of the brake plate is stabilized.

The cylinder portion referred to here includes not only a portion integrally formed with the brake plate, but also a material of a separate material attached to the brake plate, and the thickness thereof is not limited. For example, if the cylindrical portion is made of resin, the weight is light and the thickness may be large.

In the above-described structures, when the brake plate swings integrally with the suspension body, the brake plate rubs against the leading end of the electromagnet to cause friction. Therefore, there is a possibility that it will be an obstacle to stopping at an accurate vertical position (Note 1).

A countermeasure against this is a swing stop structure according to a third structure. In this structure, when the electromagnet is in the OFF state, the brake plate is biased by a spring from within the distal end of the electromagnet. It is characterized by being pushed up by a protruding push-up member.

This will be described in more detail. An axially-bottomed hole is formed at the center of the tip of an electromagnet that magnetically attracts the brake plate, and a spring is accommodated in this hole. When the electromagnet is in an OFF state, a part of the reciprocating member protrudes from the tip of the electromagnet to push up the brake plate by pushing an advancing / retreating member such as a pin or a ball that smoothly slides into the brake plate. If the brake plate is lifted by the reciprocating member in this way, the above-mentioned problem (Note 1) can be considerably solved.

On the other hand, when the electromagnet is turned on, a magnetic attractive force is generated at the tip of the electromagnet, and the brake plate is attracted to attract the brake plate to the tip of the electromagnet.
At this time, the advancing / retreating member retracts into the tip of the electromagnet.

As a method of lifting the brake plate from the tip of the electromagnet, not only the above-described third configuration but also a fourth configuration described below may be adopted. In the fourth configuration, when the electromagnet is in the OFF state, the brake plate
It is characterized in that it is urged by a spring supported by the hanging body in a direction slightly away from the tip of the electromagnet.Specifically, from above the brake plate, the brake plate is pulled by the pulling force of the spring. The brake plate is lifted so as to float from the tip of the electromagnet.

Thus, when the electromagnet is off, the brake plate and the end of the electromagnet are in a non-contact state, and the above-mentioned problem (Note 1) is completely eliminated.

The tension force of the spring needs to be smaller than the attraction force of the electromagnet because it is necessary to move the brake plate in the attraction direction when the electromagnet is ON.

As for the structure in which the brake plate is pressed by the tip of the electromagnet to stop the swing of the brake plate, the brake plate may have a structure that does not move along the suspension body. When the end of the brake plate hits the brake plate, the brake plate moves slightly along the suspension body, and stops when it comes into contact with a flexible stopper such as rubber provided on the suspension body. , And stable pressing can be obtained.

Such a suspension structure for suspending the suspension can be used as a part of various products such as a level and an earthquake countermeasure product. When used for the outgoing laser device,
As explained in the preceding column, the utility value is extremely high.
Therefore, in particular, the sixth configuration is characterized in that the swing stop structure of the suspension according to any one of the first to fifth configurations is provided in the blackout laser device. is there.

[0037]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

One embodiment of the suspension structure of the suspension according to the present invention (hereinafter abbreviated to the suspension structure) will be described with reference to FIGS. 1 and 2. FIG. First, as shown in FIGS. 1 and 2,
A support member 3 for suspending the suspension 2 is mounted in an opening 9a formed in the center of a gyro 9 whose outer peripheral portion is supported by a base or the like. A mounting table 4 having a disk shape in a plan view for mounting various measuring devices or laser beam irradiating units or the like which require a posture is fixedly provided. The suspension 2 has a columnar shape or a cylindrical shape, and is mounted with its upper end protruding into the support member 3, and is supported by the biaxial gyro 1 together with the support member 3. Swing in all directions is free. A regulating plate 5 having an opening 5a at the center for regulating the swing of the suspension body 2 within a predetermined range is provided by the opening 5a.
It is mounted on a base or the like in a state where the lower part of the suspension body 2 is located in a.

The suspension plate 2 includes a brake plate 6 having a disk shape in a plan view, having a curved surface along the oscillating imaginary line, and having a cylindrical portion 6a formed in the center. 6a is supported in a state of being fitted to a shaft portion extending from the center to the lower part of the suspension body 2. The oscillating virtual line referred to here is an arc-shaped imaginary line in which the brake plate 6 at a predetermined position of the suspension body 2 swings together with the suspension body 2, and the brake plate 6 swings in any direction around it. Therefore, the curved surface along the imaginary swing line is a so-called dish-shaped curved surface extending from the center to the periphery and along the upper side.

Since the brake plate 6 is fitted to the suspension body 2, the brake plate 6 can be moved up and down with respect to the suspension body 6, and an outer peripheral surface portion of the suspension body 6 below the brake plate 6 is provided. Two rubber O-rings 7, 7 are provided in a state of being in contact with each other in the vertical direction.

On the upper surface of the regulating plate 5, three or more electromagnets 8, 8 are provided at regular intervals in the circumferential direction of the upper surface of the regulating plate 5, and each of the electromagnets 8, 8 is housed in the center thereof. One ends of the iron cores 8b, 8b protrude upward to form magnetic attraction surfaces 8a, 8a.
a is directed to the swing center direction X of the suspension 6. In the attached drawings, the electromagnets 8, 8 are omitted for convenience. Reference numerals 8c, 8c denote coils for generating magnetism in the iron cores 8b, 8b. And each electromagnet 8,8
Is a push button switch 1 using the batteries 10 and 10 as power sources.
It is electrically connected in parallel so as to be activated by one push operation.

At the center of each of the magnetic attraction surfaces 8a, 8a, there is formed a deep round hole 8d, 8d with a bottom along the axial direction, and in this round hole 8d, 8d, a pin shape is formed together with the springs 12, 12. And the upper ends of the push-up members 13, 13 are protruded above the magnetic attraction surfaces 8a, 8a by the biasing force of the springs 12, 12. The upper end surfaces of the push-up members 13, 13 are formed in a smooth hemispherical shape.

To describe the force relationship of each part, the brake plate 6 fitted to the suspension 2 is lowered by its own weight, that is, down to the upper ends of the push-up members 13, 13. 13 is greater than the weight of the brake plate 6, and the magnetic attraction surface 8
The sum of the suction forces of the push-up members 13 and 13 far exceeds the sum of the urging forces of the push-up members 13 and 13.

For this reason, when the electromagnets 8, 8 are in the OFF state, that is, when no magnetic attraction force is generated on the magnetic attraction surfaces 8a, 8a, the push-up members 13, which protrude from the magnetic attraction surfaces 8a, 8a. 13, the brake plate 6 is in a state of being lifted.

On the other hand, when the electromagnets 8, 8 are turned on, as shown in FIG.
A magnetic force is generated in the a and 8a, and the brake plate 6 is attracted and attracted downward, and at this time, the push-up members 13, 13 are in a state of being receded downward in the respective magnetic attraction surfaces 8a, 8a.

When the brake plate 6 swings in the F direction together with the suspension body 2, the brake plate 6 swings in a state where the brake plate 6 is placed on the push-up members 13, 13, that is, in a sliding contact state.
At this time, since the shape of the disk surface of the brake plate 6 has a shape along the virtual oscillating curve as described above, the lower surface of the brake plate 6 and the The distance between the magnetic attraction surfaces 8a, 8a is always substantially constant.

The above-mentioned O-rings 7, 7 are provided at the axial positions of the suspension body 2 against which the central peripheral edge 6c of the brake plate 6 contacts and presses when the brake plate 6 is attracted to the magnetic attraction surfaces 8a, 8a. When the brake plate 6 retreats and presses the O-rings 7 and 7 against each other, the shapes of the O-rings 7 and 7 are slightly flexibly deformed to press the brake plate 6 and the suspension 2 in close contact. And the brake plate 6
The vibration of both the suspension 2 and the suspension 2 is eliminated.

The ON operation of the electromagnets 8 and 8 is optimally performed when the suspension 2 and the brake plate 6 are at the stop position, and the stop position is naturally set in the direction of the center of gravity, that is, in the vertical direction by the weight of the suspension 2. It is the position where it stopped. That is, the suspension 2 and the brake plate 6 are temporarily braked in the vertical direction, and these swings are less likely to occur thereafter, and the vertical posture is stabilized. Of course, even if the suspension body 2 and the brake plate 6 are in a slightly swinging state, when the brake is applied several times, the swing is reduced at once, and the vehicle immediately assumes a vertical posture. The push button switch 11 may be constituted by a changeover switch that repeats ON / OFF, and the suspension body 2 and the brake plate 6 may be locked in the vertical posture.

The brake plate 6 is connected to the magnetic attraction surface 8.
a, 8a, the lifting member 13,
13, the electromagnets 8, 8 are provided by springs 15 supporting the brake plate 6 on the suspension 2, as shown in FIG.
8, supported in a state of being floated from the magnetic attraction surfaces 8a, 8a,
The attraction force of the magnetic attraction surfaces 8a, 8a may be used to move the brake plate 6 downward so as to be attracted to the magnetic attraction surfaces 8a, 8a. In FIG. 4, reference numerals 16 and 16 denote elongated holes formed in the suspension body 6,
Reference numeral 17 denotes a pin for connecting the brake plate 6 and the spring 15, and the pin 17 is inserted into the elongated holes 16.

Next, referring to FIG. 4, a laser beam projection device for blackout having such a structure of the present invention and provided with a suspension body swing stop structure will be described in detail. In FIG. 4, portions common to FIGS. 1 to 3 are denoted by the same reference numerals, and redundant description will be omitted.

In the laser device for marking out according to this embodiment, the gyro 1 is supported at a place where the upper parts of a plurality of legs 21 such as a tripod (not shown) are integrated. The suspension 2 and the brake plate 6 are the same as described above. Then, the laser sight 23 is pinned on the installation table 4 located on the gyro 1
The sight holder 24 pivotally attached at 25 is attached to be swingable in the vertical direction.

Therefore, the laser sight 23 can freely rotate horizontally, swing along with the swing of the hanging body 2, and also can swing vertically.

In this laser sight 23, for example, two modules having a semiconductor laser light oscillator for emitting red laser light are embedded with their light emitting surfaces exposed from the upper surface of the sight. In addition, a rod lens is provided in the passage of the laser light on the front surface of the module, so that an image formed by a cross-shaped crossing line where long straight lines cross can be formed on the image plane.

In FIG. 4, a large opening 3c is formed in the upper part of the holding member 3, and
Is formed in a cylindrical body, and a module 26 provided with a semiconductor laser light oscillator is also provided above the opening 3c with its light emitting surface facing downward, and the vertical point of the suspension 2 is formed in a spot shape. The laser beam can be projected on a floor or the like.

As shown in FIG. 4, a rod 28 for supporting the gyro 1 and the like near the outer peripheral edge of the brake plate 3,
If the position 28 is located, there is a possibility that the movement of the brake plate 3 may be hindered. In the case of such a structure, FIGS.
As shown in FIG.
It is necessary to devise R, 6R,... So as not to hinder the swing.

[0056]

As described above, the suspension of swinging structure of the suspension according to the present invention has a structure in which the brake plate swinging with the suspension can be attracted by the electromagnet so that the brake can be applied. The lower body could be stopped at a vertical position due to its own weight.

Further, by forming the brake plate along the imaginary swinging curve and further fitting the brake plate up and down with respect to the suspension body, the brake plate can be made smaller or smaller in swing with respect to the electromagnet. Irrespective of this, it was possible to always swing the rock while keeping a certain distance, and at the time of the suction, the brake plate was moved toward the electromagnet along the suspension body, so that the plurality of electromagnets could be uniformly sucked.

For this reason, the brake plate is sucked in a well-balanced and stable posture. Further, when the brake plate is attracted to the electromagnet, the brake plate is brought into contact with a rubber O-ring provided on the peripheral surface of the suspension, and the brake plate and the suspension are made of this flexible material. Because it could be in close contact with the O-ring, it was possible to eliminate blurring between the brake plate and the suspension. For this reason,
The suspension could be instantaneously stopped at the vertical position. In addition, by providing the suspending body swing stop structure having such an effect in the laser beam projection device for blackout, the working efficiency and accurate workability can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a suspension structure of a suspension according to an embodiment of the present invention.

FIG. 2 is a front view when the electromagnet is in an ON state.

FIG. 3 is a front sectional view showing a suspension suspension structure of a suspension according to another embodiment of the present invention.

FIG. 4 is a front sectional view of the laser device for marking out according to the present invention.

FIG. 5 is a plan view of a brake plate according to another embodiment.

FIG. 6 is a sectional view taken along the line YY.

FIG. 7 is a perspective view showing a state of use of a laser device for blackout having a conventional structure.

FIG. 8 is a front view showing a swing stop structure of a suspension body in a conventional ink-marking laser device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gyro 2 Suspension body 5 Swing regulating plate 6 Brake plate 7 O-ring 8 Electromagnet 8a Magnetic attraction surface 12 Spring 13 Push-up member

Claims (6)

[Claims] 1. A brake plate having a curved surface along an imaginary swing line at an area near a lower portion of a swingingly suspended suspension, and an opening corresponding to the outer peripheral shape of the suspension is opened at the center thereof. Is mounted movably along the suspension body, and when desired, when one or more electromagnets provided facing the surface of the brake plate are turned on, the brake plate is attracted to the tip of the electromagnet. And a suspension structure for suspending the suspension body, wherein the suspension body and the brake plate are configured to stop swinging. 2. The swing stop structure of a suspension according to claim 1, wherein the opening is formed by a tubular portion formed at a central portion of the brake plate in a plan view. 3. The electro-magnet according to claim 1, wherein when the electromagnet is in an OFF state, the brake plate is pushed up by a push-up member which is urged by a spring and protrudes from within the distal end of the electromagnet. The swing suspension structure of the suspension according to the above. 4. When the electromagnet is in an OFF state, the brake plate is moved by a spring supported by the suspension body.
The suspension suspension structure for a suspension according to any one of claims 1 and 2, wherein the suspension is biased in a direction slightly away from a tip portion of the electromagnet. 5. A stopper made of a flexible material pressed by the brake plate is provided at a portion of the suspension where the brake plate is moved along the suspension by being attracted or pressed by the electromagnet. Item 4. The swing stop structure of the suspension according to any one of Items 1 to 3. 6. Irradiating a laser beam so as to irradiate a laser beam toward an arbitrary projection location from a side to an upper part.
In the light path in front of one or a plurality of modules, a lens was disposed such that a laser beam emitted from the module was formed into an image of a straight line or an image of an intersecting straight line obtained by intersecting two straight lines in a cross shape. The laser sight is provided so as to be horizontally rotatable together with the sight holder, or is provided so as to be vertically rotatable with respect to the sight holder in addition to the horizontal rotation. In a blackout laser device configured to irradiate a laser beam downward from a lower end portion of a hanging body that protrudes downward from a lower part of the hanging body, the suspension body is prevented from swinging. A blackout laser device provided with a swing stop structure for a suspended body, wherein the swing stop structure is used.