JPH0245769Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of a box rule used in surveying for earthworks, etc.

Conventional box scales simply mark the surface of a long box body, so at an earthwork site, etc., the box scale can be lifted to a predetermined height and surveyed, and once the appropriate height is reached, marks are placed on the gauges, etc. To do this, we need a worker with a box measure and another assistant to mark the marks. If you tried to make a mark by yourself with a box measure, you would get fluctuated and couldn't make a mark in the correct position.

The present invention aims to provide a box measure that eliminates such drawbacks and problems. The rod is rotatably inserted and supported together with an upper shaft support member and a lower shaft support member attached to the main body of the box rule. This box measure is characterized in that the branch can be fixed at any position in the longitudinal direction of the box measure body.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a perspective view showing the entire box scale, and FIG. 2 is a partially enlarged view showing the main parts thereof.

In the box scale 1, which is made expandable and retractable by fitting and connecting cannula tubes 2, 3, and 4 having rectangular cross sections with different diameters, the front surface of the cannula tube 4, which is the part supported by the operator, is A main rod 5 having an operating handle 13 at the upper end is rotatably attached to an upper shaft support member 6 and a lower shaft support member 7, and a spring 10 is fitted onto the main rod 5 so that the spring 1
A locking ring 11 joined to the lower end of the rod 5 is fixed to the main rod 5, and is resiliently locked between the support plates 14 and 15 of the lower shaft support member 7.

A marker portion 9 is attached to the lower end of the main rod 5 via a connecting rod 8.
is formed, and the marker part 9 is a writing instrument 12 whose top falls onto the measuring part of the box measure 1 by rotation of the main rod 5.
and a grip ring 19 to which the writing instrument 12 is detachably attached by tightening or loosening the screw 18.

This marker portion 9 is attached to the main rod 5 as shown in FIG.
Grip rings 19, 1 are provided with two continuous rods 8, 8' on the left and right sides, and have writing instruments 12, 12' inserted into their respective ends.
9' (see Figure A), and one in which two writing instruments 12, 12' and grip rings 19, 19' into which they are fitted are formed at the end of one continuous rod 8 (see Figure B). ), or one in which a writing instrument 12 having marking portions on the left and right sides is inserted into one gripping ring 19 (see Fig. C) may be used as needed.

In the above-mentioned embodiment, when the box measure 1 is lifted and its back surface is brought into contact with the glue 17, and the operating handle 13 is rotated while holding it at the required height, the main rod 5 is interlocked and the connecting rod 8 is rotated. The marker portion 9 at the end of the screw rotates around the main rod 5 to mark the glue 17.

In addition, when the marker part 9 is located at the lower end of the box rule 1, the main rod 5 is usually pushed downward by the spring 10 in order to protect the marker part 9 from impact with the ground etc. during surveying work. If pressing force from below is applied to the lower end of the main rod 5 or the marker portion 9, the main rod 5
is moved upward together with the marker portion 9 to avoid impact.

Furthermore, since the lower shaft supporting member 7 can be moved in the longitudinal direction of the box rule 1 and can be fixed at any position with the screw 16, the marker portion located at the lower end of the main rod 5 that is resiliently locked to the lower shaft supporting member 7 9 can also be moved not only to the lower end position of the box measure but also to any desired position.

As described above, the present invention allows the worker who lifts and supports the box scale to easily mark the scale reference point of the box scale on the glue without losing his or her posture. Accurate surveying can be done by one person, and the position of the marker part can be changed freely.In addition, it has the excellent effect that even if the marker part is at the bottom end of the box measure, it will not be damaged by impact with the ground etc. .

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a partially enlarged view showing the main part, Fig. 3 is an explanatory diagram showing another aspect of the marker section, and Fig. 4 is an illustration of the embodiment. It is an explanatory view showing an operating state. 1: Box measure, 5: Main rod, 6: Upper shaft support member, 7:
Lower shaft supporting material, 8: Connecting rod, 9: Marker part, 1
3: Operation handle.

Claims (1)

[Scope of utility model registration request] A main rod having an operating handle at the upper end and a marker section at the lower end via a connecting rod is attached to the box rule main body together with an upper shaft support member and a lower shaft support member that rotatably insert and support the main rod. A box measure, characterized in that the rod is elastically locked to a lower shaft member so as to be pressed down by a spring at all times, and the lower shaft support can be fixed at any position in the longitudinal direction of the box measure body.