JP2000028359A - Aperture laser line marker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the irradiation of straight line light orthogonal to one another from four points forming a regular square in such a way as to be freely displaceable in size with respect to a center point light for opening a regular square or rectangular opening on a ceiling. SOLUTION: An aperture laser line marker is formed of a head 2 for projecting line light and center laser point light arranged at the center of a square opening to be opened on a ceiling and four heads 3a, 3b, 3c, and 3d for projecting laser line light which are squarely arranged in the periphery of the projecting head 2. The projection of the four heads for projecting laser line light can be adjusted in such a way as to be in parallel with and at right angles to the center line light and to be at equal distance from or at equal angle with the center point light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening laser line marker for projecting a laser line light to indicate a position and a size of a square opening for mounting an air conditioner or a duct on a ceiling.

[0002]

2. Description of the Related Art Conventionally, in order to form a rectangular or square square hole in a ceiling, a vertical point on the floor is projected onto a ceiling vertically above using a laser line light, and is equidistant from the vertical point. Position the four points of the four corners of the square on the floor surface, move the vertical laser line marker on it, and project four laser line light vertical points one at a time on the ceiling with the vertical laser marker Was. However, moving and positioning the laser marker every time each point of the four corners of the square is positioned to mark one point of the opening on the ceiling was a very laborious and time-consuming task.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to form a square or rectangular square opening in a ceiling by converting vertical line lights orthogonal to each other from four points forming a square into central point light. To provide an opening laser line marker capable of irradiating the dimension freely with respect to the size.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a central laser point light and line light projection head which is projected at the center of a square opening to be opened in a ceiling, and a square around the projection head. And four linear laser line light projection heads, which can be adjusted and projected parallel and perpendicular to the central line light and at the same distance or angle to the central point light. The problem is solved by an apertured laser line marker.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. FIGS. 1 and 2 respectively show a position for drilling a hole in a ceiling for mounting an air conditioner, an opening for determining a size, a plane including a partial cross section of a leather line marker, and a line II-II. 3 shows a cut vertical section.

[0006] This open leather line marker is the outer cylinder 1
, A laser point light and laser line light projection head 2 at the center located at the center of the laser beam, and four linear laser line light projection heads 3a, 3b, 3c, 3d arranged around the projection head 2. The laser point light and laser line light projection head 2 at the center is
The optical system comprises a storage tube 5 containing an optical system fixed at the center of the optical system. This optical system has a red semiconductor laser 6 as a light source. The light of the semiconductor laser 6 is made substantially parallel by a collimator lens 7 attached to an upper optical path along the optical axis L. Further, a part of the substantially parallel light beam passing through the optical path above the head part 2 projects the point light.
Then, a point light passes through a, and the rest is projected from the laser line light projection head portion 2b, which is horizontally displaced from the point light projection head portion 2a, by the rod lens 9 as a straight line light including the point light. .

Since the four laser line light projection heads 3a, 3b, 3c and 3d existing around the central point light and laser line light projection head 2 have the same structure, one of them has one laser line light projection head. 3a
Will be described. The laser line light projection head is configured by incorporating a lens optical system of a semiconductor laser 6 ′, a collimator lens 7 ′, and a rod lens 9 ′ into a cylinder 10. Each tube 10 has a flange 10a at its base.
An annular plate 11b at one end of the interlocking lever 11 (only the interlocking lever 11 which is clearly seen in FIG. 2, but the same applies to the other interlocking levers) is provided by the (see the left side of the laser line light projection head 3c mounting portion). (Fig. 3)
The annular plate 11b has opposed bearings 11a and 11a 'extending vertically upward on both sides thereof, and these bearings 11a and 11a' are ring-shaped fixed to the bottom plate 4 of the outer cylinder 1. The two shafts 15 (the opposite shafts 1) which are screwed into the bearings 13a, 13b, 13c and 13d of the lever base 13 (see FIGS. 6 and 7), respectively.
The roller 16 at the other end rests on the four lower cam surfaces 17a of the cam ring 17 (see FIG. 5). Not in contact. This is because restraining the interlocking lever impairs free displacement. One cam ring 1
At the top of 7, an internal gear 18 is attached,
The pinion 19 that meshes with the internal gear 18
The circumferential position of the cam ring 17 can be changed by turning a knob 22 of a shaft to which the pinion 19 is fixed, which is rotatably held on a lid 20 of the outer cylinder 1 by a nut 21. Therefore, the lower cam surface 17a, the rollers 16 and 16 'which roll on the top and bottom move up and down, and each of the interlocking levers 11, 12, 14 and 16 is aligned with two shafts 1
It can rotate around 5, 15 '. At this time, for example, when the upper rollers 16 and 16 ′ are displaced downward by the knob 22, the upper part of each cylinder 10 that houses the optical system supported at one end of each interlocking lever rotates toward the inner center. Therefore, the straight laser line light projected by cutting the axis of the rod lens 9 'at a right angle is tilted inward in FIG. 2 and the other cam rollers of each interlocking lever perform the same operation. The distance between the linear laser line lights is also reduced, and a small square is formed.

Conversely, when the roller 16 located below is displaced upward from below by rotating the knob 22, the interlocking lever 11 rotates counterclockwise in FIG. Is tilted outward, the linear laser light projected by cutting the rod axis of the rod lens 7 'perpendicularly spreads outward, and the interval between the four laser lines also increases.

The four interlocking levers 11, 12, 14, 16
As is apparent from the plan view of FIG. 1, the adjacent interlocking levers and the interlocking levers are arranged so that the upper and lower interlocking levers are alternately turned upside down where they overlap, and are always attached downward by the coil spring 23. Power to prevent interference in the operating range. Also, the laser light projection heads 3a, 3b, 3c, 3
A window 25 for emitting a laser beam from d is provided for each projection head, and a window 26 for viewing the bubble tube is provided for each bubble tube.

A casing 27 is fixed below the bottom plate 4, and a tripod 29 is mounted on the outer periphery of the casing 27 having a power supply section 28 via a ring 29a so as to be rotatable in a circumferential direction. The direction of the central straight line light can be set arbitrarily. Also, the center point light 2 can be set vertically by rotating the grip 30 of the tripod leg 29 to expand and contract the leg and align the bubble tube 26 (FIG. 1). When the central point light is vertical, the bubble tube 26 is adjusted to indicate horizontal. Further, a lower portion of the casing 27 has a center pin holding portion 31 as a device for adjusting the ground point just below the optical axis L of the point light of the laser light projection head 2 at the center. In this case, the center pin 3
Although 1 'is used, an LED or a semiconductor laser can also be used.

Since the outer tube 1 has the strap 32 attached thereto, it can be moved with one hand.
Reference numeral 34 denotes a power switch. The power supply is a dry battery 28. The power switch 34, the laser driver circuit 35, and the semiconductor laser 6 are connected by a conducting wire, and are turned on and off by the operation of the switch 34. The surrounding 4
The same effect can be obtained by fixing the projection heads 3a, 3b, 3c, and 3d radially, placing a mirror on the optical path, and changing the angle of the mirror with respect to the optical axis of the projection head.

The center point light may be converted into a line light, and the intersection of the cross lines may be set as a vertical point. As a method for setting the vertical direction of the central point light, an automatic attitude control device using a so-called electronic bubble tube can be used. Although it can be incorporated in an automatic vertical device using a gimbal, it is considered disadvantageous in terms of cost and size.

FIG. 8 is a perspective view showing a use state of the opening laser line marker according to the present invention. There is a device just below the optical axis L of the point light of the central laser light projection head 2 so as to match the ground point, so that the central point light can be set vertically. By using the opening laser line marker of the present invention, a square vertical laser line light of side A is projected on the ceiling, and as shown in FIG. 9, a point B / 2 is obtained on both sides from the laser line light passing through the central point light. , A
A × B rectangle is created.

[Brief description of the drawings]

FIG. 1 is a plan view partially showing a cross section of an opening laser line marker according to the present invention.

2 is a line II of FIG. 1 of the open leather line marker of FIG. 1;
FIG. 3 is a vertical cross-sectional view taken along the line -II.

FIG. 3 is a plan view of an interlocking lever of the opening laser line marker according to the present invention;

FIG. 4 is a side view of the interlocking lever of FIG. 3;

FIG. 5 is a cross-sectional view of the cam ring.

FIG. 6 is a plan view of a lever base on which an interlocking lever is rotatably mounted.

FIG. 7 is a side view including a cross section of the lever base of FIG. 6;

FIG. 8 is an explanatory view of a use state of an open leather line marker according to the present invention arranged in a room.

FIG. 9 is an explanatory diagram showing a process of obtaining a rectangle from the projected square laser line light.

[Explanation of symbols]

2 Central laser point light and line light projection head 3a, 3b, 3c, 3d Surrounding laser line light projection head L Optical axis 6 Semiconductor laser 10 Optical system storage cylinder 11, 12, 14, 16 Interlocking lever 15 For interlocking lever Rotating shaft of 16, 16 'Roller 18 Internal gear 19 Pinion

Claims (5)

[Claims] 1. A central laser point light and line light projection head (2) projected on the center of a square opening to be opened in a ceiling, and four laser line light projection heads arranged in a square around the projection head (3a, 3b, 3c, 3d) that the four laser line light projection heads can adjust and project parallel and perpendicular to the central line light and at the same distance or angle to the central point light. An aperture laser line marker. 2. An optical system including a semiconductor laser (6) forming a vertical optical axis (L) at the center of a rectangle, a point light projection head portion (2a), and a linear laser line passing through the point light. A laser line light projection head part (2b) for projecting light and four laser line light projection heads (3a, 3b, 3c, 3d) for projecting four mutually perpendicular sides arranged around the central point light The opening laser line marker according to claim 1, wherein the cylinder (10) in which the optical systems of the four laser line light projection heads are housed can be tilted inward or outward with respect to the center thereof. . 3. A tiltable cylinder (10) containing an optical system is attached to one end of each of four interlocking levers (11, 12, 14, 16), and said one end is connected to a fixed shaft (15). Rollers (16, 16 ') which are pivotally mounted to the center and are displaced up and down along the cam surface (17a) of the cam ring are attached to the other end of each interlocking lever. ), The optical system housed in the cylinder at one end of the interlocking lever is inclined outward or inward with respect to the optical axis L, so that the square formed by the linear laser line light projected from the cylinder is moved outward. 2. An open leather line marker according to claim 1, wherein the marker is increased toward the inside or decreased toward the inside. 4. Four peripheral laser line light projection heads (3a, 3b, 3c, 3d) are fixed radially around a point light and a line light projection head (2), and are disposed on the optical path of the laser line light. 2. The aperture laser line marker according to claim 1, wherein a mirror is arranged to change an angle of the mirror with respect to an optical axis of the laser line light projection head. 5. A cam roller (16, 16 ') attached to one end of each of four interlocking levers (11, 12, 14, 16).
An internal gear (18) is provided on a cam ring having a cam surface on which the roller rolls, and by rotating a pinion (19) meshing with the internal gear (18), the cam ring (17) is rotated in the circumferential direction, 2. An aperture laser line marker according to claim 1, wherein the cylinder accommodating the optical system is tilted.