JPH048321Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tape measure that can also be used as a straight measure.

Metal straight scales that can be rolled up into a case have been available for some time, but these have disadvantages such as being cumbersome to store and difficult to use, as the scales must be inserted into the case one after another after use. .

This device can normally be used as a self-rewinding tape measure, and the entire scale can be pulled out from the case and removed from the case to be used as a straight measure, as well as being able to be automatically rewound back into the case after use. is intended to provide.

Therefore, in the present invention, an engagement hole 2 is formed at the rear end of a long scale 1 made of a curved metal strip, and an unwinding spring 3 is applied to engage the scale 1 with a winding drum 5 housed in a case 4. An elastic connecting piece 6 that removably engages with the matching hole 2 is attached, and the scale outlet 7 of the case 4 is formed into a square shape. a minimum width portion 6a that matches the width of the width, and an intermediate opening portion 7
a wide portion 6b having a sufficient length to fit b;
A bulging width portion 6c that fits the largest opening 7c is provided, the connecting piece 6 is pulled out to position the wide portion 6b at the intermediate opening 7b, and the bulging width portion 6c is locked to the intermediate opening 7b. It is a tape measure that can be used as a straight measure.

Incidentally, the engagement hole 2 of the scale 1 is adapted to be engaged with a triangular engagement portion 6d provided at the tip of the connecting piece 6. When the scale 1 is used as a straight scale, the scale 1 is completely pulled out from the case 4 and then removed from the connecting piece 6. At this time, the connecting piece 6 is pulled into the case 4 by the action of the unwinding spring 3. In order to prevent this, first pull out the bulging width part 6c from the largest opening 7c of the scale outlet 7, and then insert the smallest width part 6a into the narrowest opening 7a (see FIG. 5). Next, move the minimum width part 6a to the intermediate opening part 7b, push it into the case 4, pass the wide part 6b through the intermediate opening part 7b, and move the bulging width part 6c to the intermediate opening part 7.
(see Figure 6), and scale 1.
is removed from the triangular locking portion 6d. Also, in this state, attach the scale 1 to the connecting piece 6, and
Once pulled out, the winding drum 5
It is designed to be wound up. In the figure, reference numeral 8 denotes a locking portion at the base end of the connecting piece 6, which locks into a hole 9 of the winding drum 5.

According to the present invention, the scale 1 is connected to the winding drum 5 by the connecting piece 6, and can of course be used as an automatic rewinding tape measure. It can also be used as a straight scale by detaching it from the connecting piece 6 while it is locked in 7. After use, the scale 1 is automatically rewound into the case 4 by locking the base end of the scale 1 to the connecting piece 6 and releasing the engagement between the connecting piece 6 and the scale outlet 7. Therefore, it is much more convenient and easy to use than conventional ones.

In particular, in the present invention, the wide portion 6b of the connecting piece 6 is formed to have a sufficient length, so that even if the connecting piece 6 is pulled out by the length of the wide portion 6b when attaching or removing the scale 1, the locked state is ensured. Retained.

[Brief explanation of the drawing]

The drawings show an embodiment of the tape measure according to the present invention, in which Fig. 1 is a front view, Fig. 2 is a vertical side view, Fig. 3 is an exploded plan view showing the scale connection part, and Fig. 4 is a front view. 6 to 6 are cross-sectional plan views showing a state in which the scale connecting piece is pulled out from the scale outlet and locked. DESCRIPTION OF SYMBOLS 1... Scale, 2... Engaging hole, 3... Rewinding spring, 4... Case, 5... Winding drum, 6...
...Connection piece, 6a...Minimum width part, 6b...Wide part,
6c...Bulging width part, 7...Scale outlet, 7a
...Narrowest mouth part, 7b... Middle mouth part, 7c... Maximum mouth part.

Claims (1)

[Scope of utility model registration request] An engagement hole 2 is formed at the rear end of a long scale 1 made of a curved metal strip, and a rewinding spring 3 is applied to attach and detach the winding drum 5 housed in a case 4 to the engagement hole 2 of the scale 1. An elastic connecting piece 6 that can be freely engaged is attached, and the scale outlet 7 of the case 4 is formed into a square shape, and the connecting piece 6 is adapted to the width of the narrowest opening 7a of the scale outlet 7. A minimum width part 6a, a wide part 6b having a sufficient length to fit the middle opening part 7b, and a bulging width part 6c matching the largest opening part 7c are provided, and the connecting piece 6 is pulled out to connect the wide part 6b to the middle part. A tape measure that can be used both as a straight measure and as a straight measure, characterized in that it is located at the mouth part 7b and the bulging width part 6c is locked to the intermediate mouth part 7b.