JPS6340809A - Target mirror for laser measuring apparatus - Google Patents

Abstract

PURPOSE:To set a vertical surface and a horizontal line containing two points running through the center thereof, by a method wherein a target mirror is suspended having members for retaining latch members as arranged respectively at both upper ends thereof through a pair of hanger members which has a hook part at one end thereof while the latch members are arranged at an equal interval and a cross-hairs target is provided on the surface of the mirror. CONSTITUTION:Hook members 108 and 109 are put on pins 200 and 202 erected at specified two points and large diameter pieces 112 of hanger wires 102 and 104 are engaged with respective retaining members 126 to suspend a target mirror 100 having a flat mirror 120. First, a vertical pole 30 and a laser oscillation part 53 of a laser measuring apparatus are inched to set the laser measuring apparatus almost horizontally and a laser light is projected to the flat mirror 120 to match with cross-hairs by the laser light with a cross-hairs target 124. Then, the intersection of the cross-hairs of the laser lights reflected with the flat mirror 120 is matched with the emission center of a laser light source 52. Here, the laser light is made horizontal in a vertical plane running through the center of two points and the vertical line of the cross-hairs by the laser light represents a vertical plane while the horizontal line thereof represents the horizontal plane respectively running through the mid-point of the two points.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is used in a laser measuring device that forms a cross-shaped laser target image on a screen and positions a device based on the laser target image. Concerning target mirrors. The present invention particularly relates to a target mirror for a laser measuring device for determining the center position between two points in equipment such as automobiles, construction sites, etc.

(Prior Art) In the conventional laser measurement device described above, a screen with crosshairs is used to form a laser target image, but the screen is not directly behind the screen, and the outside surface of the device to be measured is It is difficult to set measurement points because of the screen, and when a laser target image is formed directly on the outer surface of the device to be measured, there is a problem in that the target image is very difficult to see.

In addition, when finding the center between two points, the distance between the two points is measured and the center is calculated, or the wire stretched between the two points is folded in half to find the center, which makes measurement cumbersome. Accuracy was also low.

Furthermore, when the laser beam emitted from a laser measuring device is leveled and used as a reference for level setting at a factory or construction site, an expensive auto-level laser measuring device with an automatic horizontal compensation device is used.

(Objective of the Invention) The present invention was made in view of the problems of the above-mentioned conventional laser measuring device usage and horizontal setting method, and it is possible to find the center between two points with a simple structure. The purpose is to provide a target mirror for laser measurement.

Another object of the present invention is to provide a target for a laser measurement device that can easily set a horizontal line that passes through the center between two points and is perpendicular to a vertical plane that includes the two points, as well as a horizontal plane and a vertical plane. shall be.

(Structure of the Invention) The structure of the present invention is characterized in that, in a target mirror for a laser measurement device that emits a crosshair laser, a hook portion is provided at one end, and the hook portions are arranged at equal intervals over a predetermined length of the target mirror. A pair of hanging wires on which members are arranged, and a reflecting plate provided with locking members that engage with the above-mentioned hook portions at both upper ends, one side surface of which is mirrored, and a crosshair target provided on the mirror surface. It is what happens.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

The laser measurement device is a patent application filed by the applicant in 1986-31.
This is described in the specification of No. 904, and as shown in FIG. 2, it has a horizontal rail 6 that is horizontally arranged on the body mounting table 2 via the legs 4. The leg portion 4 is fixed to the body mounting table 2 with bolts 8 and nuts 10. As shown in FIG. 3, a self-winding tape measure 12 is embedded in the end of the horizontal rail 6, and its scale belt 14 is extended over the entire upper surface of the horizontal rail 6. has been decided. The horizontal rail 6 is made of iron, which is a ferromagnetic material. A paramagnetic piece 20 is attached to the tip of the scale belt 14, and the magnetic strength of the paramagnetic piece 20 is such that it resists the force that causes the scale belt 14 to unwind when it is attracted to the horizontal rail 6. Although it maintains its position, it is determined to be easily movable by a sliding base 32 of a vertical ball 30, which will be described later, or by being held by the operator's hand.

A vertical pole 30 is slidably placed on the horizontal rail 6, and a sliding base 32 of the vertical pole 30 has a clamping device 34, and as shown in FIG. It has an indicator member 36 which has the function of moving the tape measure 12 in the opposite direction 1 and serves as an indicator for reading the scale belt 14.

A laser oscillation unit 52 is slidably attached to the vertical pole 30 via a sliding base 50, and the sliding base 50 is provided with a fixed knob 54, and a weight balancer ( Attached is the end of a wire 56 that is connected to a wire (not shown). Similar to the horizontal rail 6, a self-winding tape measure (not shown) is embedded in the upper part of the iron vertical pole 30, and its scale belt 60
A paramagnetic piece 62 is attached to the tip of the index member 36, while an index member 64 having the same structure and the same function as the index member 36 is provided on the sliding base 50, as shown in FIG. There is.

The laser oscillation unit 52 is rotatable about the rotation axis 66 with respect to the sliding base 50, and can oscillate the laser by swinging it within a vertical plane. The laser emitted from the laser oscillation unit 52 is divided by a beam splitter (not shown) at a light intensity ratio of 2:1, and the divided beam with a large amount of light is diffused in a horizontal plane by a cylindrical lens to set a horizontal reference line. The small amount of divided light beam is diffused in the vertical plane by a semi-cylindrical lens by an angle that is half the diffusion angle in the horizontal plane and used to set a vertical reference line.

The target mirror 100, as shown in FIG. 1, consists of a pair of hanging wires 102, 104 and a reflector 106. The suspension wire 102.104 has a hook member 108.110 at one end, and the suspension wire 102.104 has a hook member 108.110 at one end.
Large-diameter portions 112 are provided in equally spaced layers over the entire length, and the large-diameter portions 112 are colored differently from the pond every 10 g, for example.

The reflector 106 has a plane mirror 120 on the negative side, and a crosshair target 124 is provided on the mirror 120 except for the central portion 122. At both upper end portions of the target mirror 100, locking members 126 with which the large diameter portions 112 of the hanging wires 102 and 104 engage are provided so as to hang the plane mirror 120 vertically.

In the above configuration, as shown in FIG. 6, pins 200.100 and 1100 for hooking the hook members 108 and 110 at two desired points.
202 is planted, and the hook members 108 and 110 are hooked thereto to hang the plane mirror 120. At this time, the locking member 126
is the same large diameter portion 112 counting from the hook member 108 side.
be engaged. In this state, the midpoint between the pins can be found from the intersection of the vertical extension of the crosshair target 124 and the line connecting the pins.

Also, first, the vertical pole 30 and the laser oscillation unit 52 are oscillated to install the above-mentioned laser measurement device almost horizontally,
A laser is applied to the plane mirror 120 to align the laser crosshair with the crosshair target 124. Subsequently, while aligning the crosshairs of the laser with the crosshair target 124, the intersection of the crosshairs of the laser reflected by the plane mirror 120 is made to substantially coincide with the center of the light emitting part of the laser light source. Upon completion of this operation, the laser will be horizontal in the vertical plane passing through the midpoint of the above two points, the vertical line of the laser crosshair will indicate the vertical plane passing through the midpoint of the above two points, and the horizontal line will indicate the horizontal plane. become.

(Effects of the Invention) The present invention has the advantage that the center between two points, a vertical plane passing through the center between the two points, and a horizontal plane can be easily determined using a simple structure.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a target mirror according to an embodiment of the present invention;
FIG. 2 is a perspective view of the laser measuring device, FIG. 3 is an enlarged perspective view of the attachment part of the automatic winding tape measure of the measuring device shown in FIG. 2, and FIG. 4 is an enlarged perspective view of the reading part of the scale belt. FIG. 5 is a side view of the laser oscillation section, and FIG. 6 is an explanatory diagram of the target mirror in use. 2...Body mounting table, 6...Horizontal rail, 12...Automatic retractable tape measure, 14.60...Scale belt, 20.62. ... Paramagnetic piece, 30° ... Vertical pole, 34 ... Clamp device, 52 ... Laser oscillation unit, 100 ... Target mirror, 102.104
...Suspension wire 106...Reflector, 108.110...Hook member, 112...Large diameter portion, 126...Register Stopping member.

Claims (3)

[Claims] (1) A target mirror for a laser measurement device that emits a crosshair laser has a pair of hanging wires with a hook at one end and hook members arranged at equal intervals over a predetermined length, and a pair of hanging wires at both upper ends. A target mirror for a laser measuring device, characterized in that it is provided with a locking member that engages with the hook part, has a mirror surface on one side, and a reflector plate having a crosshair target on the mirror surface. (2) The target mirror for a laser measuring device according to claim 1, wherein the wire hooking members have different appearances at regular intervals. (3) The target mirror for a laser measuring device according to claim 1, wherein the wire hooking member has a large diameter portion with an outer diameter larger than other portions.