JPH0741418U - Attachment for surveying instrument - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an attachment for a surveying instrument whose installation position can be adjusted. [Structure] Attachment is magnet unit 10
And a slide plate 12. Unit 10
Is a non-magnetic material plate 14 and a pair of magnetic blocks 1
6 and 18. A dovetail groove 20 is provided in the blocks 16 and 18. Between blocks 16 and 18,
The hole 26 is formed, and the magnet is rotatably arranged in the hole 26. The same magnetic pole and different magnetic poles are generated between the edges of the blocks 16 and 18 depending on the rotational position of the magnet. The laser planer 32 is fixed to the plate 12 with a mounting screw 34, and a dovetail projection 36 that fits into the dovetail groove 20 is formed. A rack 38 is engraved on the lower surface side of one of the dovetail projections 36. A pinion 40 that meshes with the rack 38 is rotatably installed on the magnetic block 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an attachment for fixedly supporting a surveying instrument such as a rotary irradiation type automatic leveling device at a predetermined position.

[0002]

[Prior art]

 As one type of surveying instrument, there is known a device that projects a laser beam on a horizontal plane or a vertical plane and indicates a position on the same plane.This type of device is called a rotary irradiation type automatic level device or a laser planer. ing. When using such a device, a light receiver for receiving a laser beam is fixedly supported by a column or the like. By the way, as an attachment used in such applications, a mounting plate on which the surveying instrument is mounted and fixed is integrally formed at one end of a U-shaped clamp frame, and a tightening screw is attached to one of the U-shaped parts of the clamp frame. A screwed structure is known.

In the attachment having such a structure, the support pillar is attached to the U-shaped portion of the clamp frame, and the tightening screw is turned to clamp and fix the support pillar between the tip of the tightening screw and the clamp frame. However, with an attachment having such a structure, although a large tightening force can be obtained by screwing the tightening screw, in consideration of supporting a plurality of types of fixed members of different sizes, the U-shaped part of the clamp frame is considered. Since the interval becomes large and the length of the tightening screw becomes correspondingly long, there was a problem that the amount of rotation operation of the screw became extremely large when fixing a small member.

Further, this kind of attachment is stored in a storage case together with a surveying instrument. In this case, considering storage efficiency, the tightening screw should be turned to the most tightened position. This work was troublesome when the attached screw became long. Then, for example, Japanese Utility Model Laid-Open No. 3-63813 discloses an attachment capable of solving such a problem.

In the attachment disclosed in this publication, the shape of the clamp frame is the same as that described above, but instead of the tightening screw, an operation rod having a plurality of pins protruding therefrom is used. The distal end side of the operating rod has a double cylinder structure, and the pressing member that abuts against the fixed member is urged by a spring in the protruding direction. The pin of the operation rod is locked in an engagement groove of a through hole formed through one wall surface of the clamp frame.

In the attachment configured as described above, when the operation rod is rotated and pushed in, the fixed member can be fixedly supported, and when the operation rod is stored in the case, it is in the most pushed state with one touch. be able to. By the way, Japanese Patent Application No. 5-22677 proposes a laser planarizer developed by the present applicant. The laser planarizer according to the present application has a protrusion on the fixed member side as a structure for mounting a light emitter. An attachment for sandwiching is attached integrally.

However, the above-described conventional attachments have been pointed out to have the technical problems described below.

[0008]

[Problems to be solved by the device]

 That is, since the attachment disclosed in the above publication uses the U-shaped clamp frame, the light receiver cannot be directly attached to, for example, a flat wall surface of a building structure. Further, in the laser planar attachment according to the above application, the light emitter cannot be similarly attached unless the wall surface or the like has a protrusion.

By the way, under such a condition, for example, an attachment structure in which a light receiver or a light emitter is fixed by a magnet to a steel frame portion which is embedded or exposed in the wall surface of a building structure is conceivable. However, such an attachment structure has the following problems. That is, since the receiver of the laser planer is quite heavy, the magnet needs a fairly strong magnetic force, but if a magnet with a strong magnetic force is used, the receiver can be firmly fixed to the steel frame part etc. However, the movement of the attachment is very troublesome when finely adjusting the position of the light receiver. The present invention has been made in view of such conventional problems, and an object of the present invention is to easily and surely attach to a flat surface, for example, a horizontal surface and a vertical surface, Moreover, it is to provide an attachment that allows the position of the surveying instrument to be easily adjusted.

[0010]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a pair of magnetic blocks facing each other with a non-magnetic material interposed, and a magnet rotatably installed in a hole provided between the magnetic blocks. And a magnet unit for rotating the magnet to generate magnetic poles of the same or different polarities between the edges of the magnetic block that is in contact with the fixed member side made of a magnetic material. An attachment for a surveying instrument, which has a slide plate slidably supported and to which a surveying instrument is fixed, and a rack and pinion mechanism for moving the slide plate between the magnet unit and the slide plate. It is characterized by being provided.

[0011]

[Action]

 According to the surveying instrument attachment having the above configuration, the surveying instrument attachment includes a pair of magnetic blocks facing each other with a non-magnetic material interposed therebetween, and a magnet rotatably installed in a hole provided between the magnetic blocks. Since the magnet unit has a magnet unit for generating magnetic poles of the same polarity or different polarities between the edges of the magnetic block that is brought into contact with the fixed member side by rotating the magnet, the magnet unit is rotated. When magnetic poles of different polarities are generated between the edges of the magnetic block, a magnetic force is generated between the edges of the magnetic block, and this magnetic attachment force fixes the attachment to a member to be fixed that has magnetism, such as a steel frame. You can

Further, when the magnet is rotated to generate magnetic poles of the same polarity between the edges of the magnetic block, the coercive force disappears, so that the attachment can be removed from the fixed member. Furthermore, a rack and pinion mechanism that moves this slide plate is provided between the magnet unit and the slide plate to which the surveying instrument is fixed.Therefore, by rotating the pinion, the attachment is fixed to the fixed member. The slide plate can be moved with.

[0013]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 3 show an embodiment of an attachment for a surveying instrument according to the present invention. The attachment shown in the figure has a magnet unit 10 and a slide plate 12. The magnet unit 10 has a flat non-magnetic material plate 14 and a pair of magnetic blocks 16 and 18 fixed to both sides of the plate 14 as a center.

The magnetic blocks 16 and 18 are formed in the same shape, and a dovetail groove 20 is provided on the upper end surface side so as to straddle between the two blocks 16 and 18, and at the same time, Flat seating surfaces 24 that come into contact with the fixed member 22 made of a magnetic material are formed at both ends on the end surface side. Further, between the magnetic blocks 16 and 18, there is formed a hole portion 26 extending along the surface direction of the non-magnetic material plate 14, and the inside of this hole portion 26 is not shown in FIGS. A cylindrical magnet 28 is rotatably arranged.

A rotation operating portion 30 is connected to the magnet 28, and the rotation operating portion 30 projects forward from the end faces of the blocks 16 and 18. FIG. 3 shows the operating principle of the magnet unit 10 having the above configuration. In the magnet unit 10 shown in the same figure, when the magnet 28 is rotated by the rotation operation section 30 so that the N and S magnetic poles of the magnet 28 are positioned so as to be orthogonal to the magnetic blocks 16 and 18, FIG. As shown, in one magnetic block 16, the vicinity of the magnet 28 is magnetized to the N pole, and the seating surface 24 that abuts the fixed member 22 is magnetized to the S pole.

At this time, in the other magnetic block 18, the vicinity of the magnet 28 is magnetized to the S pole, and the seating surface 24 that abuts the fixed member 22 is magnetized to the N pole. That is, in the state shown in FIG. 3A, magnetic poles having different polarities are generated between the seating surfaces 24 located at the edges of the magnetic blocks 16 and 18. Therefore, a magnetic force is generated between the seating surfaces 24 of the magnetic blocks 16 and 18, and the magnetic force can fix the attachment to the fixed member 22 made of a magnetic material.

On the other hand, when the magnet 28 is rotated by the rotation operation unit 30 and the N and S magnetic poles of the magnet 28 are positioned so as to be parallel to the magnetic blocks 16 and 18, as shown in FIG. In the one magnetic block 16, the vicinity of the magnet 28 is magnetized to the N pole, and the seating surface 24 that abuts the fixed member 22 is magnetized to the S pole. At this time, in the other magnetic block 18, the vicinity of the magnet 28 is magnetized to the N pole, and the seating surface 24 contacting the fixed member 22 is magnetized to the S pole. That is, in the state shown in FIG. 3B, magnetic poles having the same polarity are generated between the seating surfaces 24 located at the edges of the magnetic blocks 16 and 18. Therefore, there is no magnetic attraction between the seating surfaces 24 of the magnetic blocks 16 and 18, and the attachment can be removed from the fixed member 22.

The slide plate 12 is, for example, a plate-shaped member formed of a non-magnetic material such as aluminum in a substantially rectangular shape, and the laser planar 32 is fixed to the upper surface side thereof with a mounting screw 34, and A pair of dovetail-shaped projections 36 are formed on both edges of the lower surface over the entire length in the longitudinal direction. The dovetail projections 36 are fitted into the dovetail grooves 20 provided in the magnetic blocks 16 and 18, and by this fitting, the slide plate 12 is slidably supported along the upper surfaces of the magnetic blocks 16 and 18. To be done.

A rack 38 is formed on one side of the dovetail-shaped projection 36 of the slide plate 12 on the lower surface side over the entire length. A pinion 40 that meshes with the rack 38 is rotatably installed on the magnetic block 16, and a knob 42 that projects toward the front side of the block 16 is connected to the pinion 40. The member 44 shown in FIG. 2 is a fixed screw for fixing the slide plate 12 at an arbitrary position.

In the attachment configured as described above, for example, as shown in FIG. 1, the rack 38 is oriented so that the rack 38 is oriented in the up-down direction of the fixed member 22 made of a flat magnetic material. , 18 are brought into contact with the fixed member 22, and the rotation operating portion 30 is operated in this state to rotate the magnet 28 so that magnetic poles having different polarities are generated between the seating surfaces 24. The attachment force is fixedly supported on the fixed member 22 by the magnetic force of the magnet 28.

At this time, when it is necessary to adjust the installation position of the laser planar 32, the knob 42 is operated to rotate the pinion 40, and the rack 38 is meshed with the pinion 40. With the attachment fixed to the fixing member 22, the slide plate 12 can be moved in the vertical direction, and the installation position of the laser planar 32 can be finely adjusted.

In the above embodiment, the laser planar 32 is fixed to the slide plate 12, but the present invention is not limited to this, and the slide plate 12 includes the laser planar 32. It is also possible to fix the photodetector for receiving the laser light emitted by.

[0023]

[Effect of device]

 As described above in detail in the embodiments, the attachment for a surveying instrument according to the present invention can be easily and surely mounted on a flat surface, for example, a horizontal surface and a vertical surface, and easily. Since the position of the surveying instrument can be adjusted, it is very easy to use.

[Brief description of drawings]

FIG. 1 is a side view of a mounting state showing an embodiment of an attachment for a surveying instrument according to the present invention.

FIG. 2 is a top view of FIG.

FIG. 3 is an operation principle diagram of a magnet unit of the attachment for a surveying instrument according to the present invention.

[Explanation of symbols]

 10 magnet unit 12 slide plate 14 non-magnetic material plate 16 magnetic block 18 magnetic block 20 dovetail groove 22 fixed member 24 seating surface 28 magnet 32 laser planer (surveyor) 36 dovetail protrusion 38 rack 40 pinion

Claims (1)

[Scope of utility model registration request] 1. A pair of magnetic blocks facing each other with a non-magnetic material interposed therebetween, and a magnet rotatably installed in a hole provided between the magnetic blocks, wherein the magnet is rotated. , A magnet unit that produces magnetic poles of the same polarity or different polarities between the edges of the magnetic block that is abutted on the side of the fixed member made of a magnetic material; A surveying instrument attachment having a slide plate to which the machine is fixed, characterized in that a rack and pinion mechanism for moving the slide plate is provided between the magnet unit and the slide plate. attachment.