JPH0453584Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a target pole that is equipped with a prism on the head for collimating the optical distance meter used in distance measurement work, and the stone protrusion has been devised. This is what was done.

[Prior Art] and [Problems to be Solved by the Invention] Conventionally, the prongs of this type of target pole were pointed and could not be used depending on the hardness or softness of the ground.

[Means for solving problems]

The present invention solves the above-mentioned problems by changing clothes by flipping them upside down so that they can be used depending on the hardness and softness of the ground.

〔Example〕

In the embodiment shown in the figure, a tightening device 3 is used to tighten and loosen an outer cylinder 1 whose peripheral surface is painted with an alternating color scheme such as red and white, and an inner cylinder 2 whose peripheral surface is painted with an alternate color scheme such as red and white. A lower mouthpiece 6 formed of a large diameter part 4 and a small diameter part 5 is disposed below the outer cylinder 1, and the small diameter part 5 is connected to the lower end opening of the outer cylinder 1. The upper surface of the large diameter portion 4 is in contact with the opening end surface of the lower end opening of the outer cylindrical body 1, and the screw hole 7 communicates with the inside and outside of the side surface of the large diameter portion 4 of the lower end cap 6. A lower tightening screw 8 is screwed into the screw hole 7, and separately, one half is made into a pointed conical part 9, the other half is made into a truncated conical part 10, and the middle part is made into a truncated conical part 10. A stone protrusion body 1 with a short cylindrical part 11
2, and a collar part 1 is located at the middle position of the cylindrical part 11.
3 is also provided with annular V-shaped grooves 14 and 15 on the outer periphery of the cylindrical portion 11 near both ends, respectively, and a pointed conical portion 9 or a truncated conical portion 10 is selected within the lower end cap 6. When it is inserted all at once and the lower tightening screw 8 is screwed, the tip of the tightening screw 8 is alternatively fitted into the annular V-shaped groove 14 or the annular V-shaped groove 15, and the flange 13 is attached to the base. 6, so that the stone protrusion body 12 is removably fixed to the lower end of the outer cylinder 1, and the large diameter part 17 and the small diameter part 17 are attached to the upper end of the inner cylinder 2. The upper mouthpiece 19 formed by the portion 18 is fitted in an unremovable manner, and the upper mouthpiece 1
A recess 20 is formed in the top surface of the recess 20, and a screw hole 21 that opens at the tip end surface of the narrow diameter portion 18 is formed in the bottom surface of the recess 20.
3 and the lower half is the threaded rod part 24
5, a screw hole 26 communicating inside and outside is bored in the wall of the cylindrical portion 23, and an upper tightening screw 27 is screwed into the screw hole 26, and the above-mentioned recess is further screwed into the screw hole 26. Small diameter ring part 29 of a size that can be inserted into 20
An auxiliary ring 31 is formed by overlapping a large-diameter ring portion 30 of a size that cannot be fitted into the auxiliary ring 31, and the threaded threaded portion 24 of the adapter 25 is inserted into this auxiliary ring 31, and the threaded threaded portion 24 is connected to the threaded portion of the upper cap 19. It is screwed into the hole 21 so that it can be removed from above.

In the figure, 33 and 34 are the collection chuck and tightening ring that constitute the tightening device 3, 35 is a rattling prevention ring, 36 is a spirit level, 37 is an element type prism, and 38 is used for setting the prism 37. The pillar 39 is an annular V groove provided in the pillar 38, 4
0 indicates the dimension scale.

[Effect]

That is, in the above embodiment, first, depending on the hardness or softness of the ground, the stone protrusion body 12 is set in a state where the pointed conical portion 9 is on the lower side or the truncated conical portion 10 is on the lower side, and When the prism 37 is made by Nikon, the auxiliary ring 31 is oriented so that the large-diameter ring portion 30 is on the top side, and when it is made by Pentax and Topcon, the auxiliary ring 31 is placed so that the large-diameter ring portion 30 is on the bottom side. In the case of the prism 37 made by Sokkisha Co., Ltd., the auxiliary ring 31 is removed.

[Effect of idea]

The present invention has a cap 6 in which the upper half has a small diameter and the lower half has a large diameter, and the narrow diameter portion 5 of the cap 6 is irremovably fitted into the lower end opening, and the upper surface of the large diameter portion 4 is the same. A cylindrical ball that is in contact with the mouth end surface of the lower end opening, a tightening screw 8 that is attached to the large diameter portion 4, one half of which is a pointed conical portion 9, and the other half of which is a truncated conical portion 10. A stone protrusion main body 12 with a short cylindrical part 11 in the middle, a flange 13 provided at an intermediate position of the cylindrical part 11, and an annular V-shaped groove provided on the outer periphery of the cylindrical part 11 near both ends. 14 and 15, the pointed conical part 9 or the truncated conical part 10 is selectively inserted into the base 6 and the tightening screw 8 is inserted.
When tightened, the tip of the tightening screw 8 is fitted into the annular V-groove 14 or the annular V-groove 15, and the flange 13 is in contact with the lower surface of the large diameter part 4 of the cap 6. It is characterized by the fact that it can be used according to the hardness and softness of the ground by performing the changing operation of turning it upside down, and it has an excellent effect that fully achieves the intended purpose. It has the following.

[Brief explanation of the drawing]

The figures show an embodiment of the target pole for a light wave distance meter according to the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is an exploded perspective view, and Fig. 3 is taken along line A-A in Fig. 1. It is an enlarged cross-sectional view of the main parts along the drawing, showing a state in which the truncated conical part 10 is inserted into the base 16 and the tip of the tightening screw 8 is fitted into the annular V-shaped groove 14. DESCRIPTION OF SYMBOLS 1... Outer cylinder, 2... Inner cylinder, 3... Tightening device, 4... Large diameter part, 5... Small diameter part, 6... Lower mouthpiece, 7... Screw hole, 8... ...Tightening screw, 9...Pointed cone-shaped part, 10...Truncated cone-shaped part, 11...
...Cylindrical part, 12... Stone head body, 13... Flange part, 14, 15... V-shaped groove, 17... Large diameter part, 1
8...Small diameter part, 19...Upper cap, 20...Recess, 21...Threaded hole, 23...Cylindrical part, 24...Threaded rod part, 25...Adapter, 26...Screw hole, 2
7...Top tightening screw, 29...Small diameter ring, 30
... Large diameter ring, 31 ... Auxiliary ring, 33 ...
Collet chuck, 34... Tightening ring, 35...
...Anti-rattling ring, 36...Level, 37
...prism, 38...pillar, 39...annular V
Groove, 40...Dimension scale.

Claims (1)

[Scope of utility model registration request] The cap 6 has a small diameter in the upper half and a large diameter in the lower half, and the narrow diameter portion 5 of the cap 6 is irremovably fitted into the lower end opening, and the upper surface of the large diameter portion 4 is connected to the opening in the lower end. A cylindrical ball abutting the end face, a tightening screw 8 attached to the large diameter portion 4, one half of which is a pointed conical portion 9, the other half a truncated conical portion 10, and the middle portion is short. A cylindrical part 11 has a stone end main body 12, a flange part 13 provided at an intermediate position of the cylindrical part 11, and annular V-time grooves 14, 15 provided on the outer periphery of the cylindrical part 11 near both ends. and a pointed conical portion 9 or a truncated conical portion 1
0 into the cap 6 and tighten the tightening screw 8, the tip of the tightening screw 8 will fit into the annular V-shaped groove 1.
4 or an annular V-shaped groove 15, and the flange part 13 is made to abut on the lower surface of the large diameter part 4 of the base 6.