JPS6347513Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blackboard, particularly a blackboard equipped with measuring tools.

The purpose of this invention is to provide a blackboard that allows measurement and recording to be performed simultaneously at construction sites and the like.

2. Description of the Related Art It is extremely common to record the progress and progress of construction work at construction sites and the like. In this case, in order to specifically record the construction work being photographed, a method is used in which a blackboard with necessary information written on it is placed in front of the subject and the photograph is taken along with the blackboard. However, in these cases, there is no way to record the dimensions (actual size) of the subject, so if you want to record, for example, the pitch of reinforcing bars, the height of column reinforcement, etc. in reinforcing steel construction, you will have to place measuring tools near the blackboard. There was an inconvenience in that an assistant had to take both measurements and records at the same time.

The present invention aims to eliminate these inconveniences, and has achieved its purpose by completing the invention described below.

Specific examples of the present invention will be described below with reference to the drawings. That is, the present invention is constituted by a combination of a blackboard main body 1 and a measuring tool 2 that is detachably attached to the blackboard main body 1. The blackboard main body 1 is selected to be of an appropriate size, and a display section 11 is provided on its surface where the name of the construction work, construction contractor, recording department, etc. can be written as necessary, and a measurement scale 12 is provided around the periphery.
etc. are displayed. The display section 11 has a subject entry field 30 in which the name of the construction work is entered in the upper part, and a partial entry field 31 in which the construction part of the structure is entered in the lower part. On the right side of the reinforcement drawing entry field 32, there is a main reinforcement entry field 33 and a rib entry field 34, respectively.In the bottom of each entry field, there is an administrator entry field 35 and a date and time entry field. An entry column 36 is provided on the left and right, and a builder entry column 37 and a notes column 38 are provided on the left and right at the bottom of these entry columns, and the measurement scale 12 is used to measure the reinforcement situation. The scale is divided into 13 divisions at intervals of 5 cm, and the intervals are color-coded at intervals of 5 cm. The measurement scale 12 was provided around the blackboard by placing or locking the blackboard on the reinforcement on a wide floor surface or on the reinforcement on a wide wall surface. The scale at 5 cm intervals is used to measure reinforcement at narrow intervals, and at the same time, as a rule of thumb, the smallest scale that can be accurately seen when taking regular photographs is used as a rule of thumb. It was established based on the following. The scale is color-coded (black and white in the example) so that even if the photograph becomes blurred and the scale becomes unclear due to the polarization or light conditions at the time of photography, it can be determined by color-coding. The equally spaced 5 cm13 sections were created by dividing a blackboard into even sections, which are suitable for normal use on a mobile device and suitable for close-up photography. 13...13 are locking tools provided on the back side of the blackboard main body 1, and locking parts 21...21 attached to the measuring tool 2.
It is removably engaged with. In addition, locking tool 1
3...13 is preferably provided both along the upper side of the back surface of the blackboard main body 1 and along the side sides, as illustrated in FIG. It becomes possible to measure and record both directions. Also, the locking tools 13, 13
In addition to the structure shown in Figure 3, the structure is shown in Figures 4 and 5.
As shown in the figure, screw holes 14...1 are provided on the back side of the blackboard main body 1.
4, and the measuring tool 2 is provided with locking plates 22...22 with screw insertion holes 23, and both are connected with screws 3...3.
It can also be configured to be removably screwed. The measuring tool 2 is expandable and retractable, and in addition to the measuring tool 2, which has a structure in which a measuring rod of an appropriate length is extended sequentially as shown in the embodiment, a foldable measuring tool or a belt-stretchable measuring tool can be freely used. Can be used selectively. Reference numerals 4 and 4 denote locking hooks attached to the upper end of the blackboard main body 1, which can be bent in an L shape and protruded toward the rear of the blackboard main body 1, in addition to being placed upright above the blackboard as shown in the illustration. Sometimes. 5 in the figure is a reinforcing bar.

As described above, in this invention, the measuring tool 2 is telescopically combined with the blackboard main body 1, so when it is necessary to record the measurements, the blackboard main body 1 on which necessary information is written is placed against the shooting location and the measuring tool 2 is attached from the side of the blackboard main body 1. By letting out the measuring tool 2 and the measuring scale 12 on the blackboard 1, it becomes possible to accurately measure the pitch of the reinforcing bars, etc., and record the photograph, thereby saving the trouble of assistance from an assistant. Not only is this possible, but it also eliminates the need for the assistant to partially obscure the subject. Furthermore, the scales of the measurement scale 12 are set at equal intervals of 5 cm and are color-coded, so measurements can be made accurately.Also, even if the image becomes blurred or unclear due to the condition of the light beam during shooting, color-coding makes it easy to adjust the reinforcement arrangement. It has the effect of being able to distinguish pitch etc. Yet another blackboard 1
Since the minimum certification conditions required at the construction site are listed in the document, there is no need to provide entry fields on a blackboard as in the past, and there is no risk of entry errors.

In addition, since the measuring tool 2 can be attached to and detached from the blackboard main body 1, by changing its mounting direction, the first
The measurement direction can be changed freely, such as by attaching the device illustrated by the solid line in the figure in the direction illustrated by the dotted line in the figure and measuring in the vertical direction, and the measuring tool 2 can be used alone. It is also economical. Also, since the blackboard body 1 is equipped with locking hooks 4, 4, it has many features such as not only the blackboard body 1 can be placed on the ground plane, but also can be locked in the middle of the reinforcement to take pictures. ing.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and Fig. 1 is a front view, Fig. 2 is a partially enlarged perspective view showing the feeding part of the measuring instrument, and Fig. 3 is a blackboard with the measuring instrument removed. 4 is a rear view of the blackboard with the measuring tool locked by another locking means, FIG. 5 is an enlarged perspective view showing the locking part of the same figure as above, and FIG. 6 is a perspective view showing an example of usage. It is. 1... Blackboard body, 13... Locking tool, 14... Screw hole, 2
... Measuring tool, 21... Locking part, 22... Locking plate, 23...
Screw insertion hole, 3... screw, 4... locking hook, 5... reinforcing bar.

Claims (1)

[Scope of utility model registration request] A measuring instrument 2 that can be expanded and retracted is removably locked on the back of a blackboard main body 1 with locking hooks 4, 4 attached to the upper end, and a display section 11 is provided on the surface of the blackboard main body 1, and the construction name is displayed from the top. There is a subject entry field 30 for entering the information and a partial entry field 31 for entering the construction part of the structure below it.
are provided separately, and a reinforcement drawing entry field 32 in which the outline of the reinforcement arrangement is entered in the lower part of the partial entry field, and a main reinforcement entry field 33 and a rib entry field 34 on the right side of the reinforcement diagram entry field. An administrator entry field 35 and a date and time entry field 36 are provided on the left and right at the bottom of each of the above entry fields, and a builder entry field 37 and a notes field 38 are provided on the left and right at the bottom of the entry fields. The surface of the blackboard 11 has a measuring scale 12 for measuring the reinforcement arrangement situation around the blackboard 11, and the measuring scale is divided into 13 sections at 5 cm intervals. is a blackboard for recording and photographing construction sites that is color-coded every 5cm.