JPH0443762Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a tape measure stopping device that can pull out a tape measure measuring strip from a container body and fix the strip at its length.

(Prior art) An example of a conventional tape measure with a structure in which the measurement band can be pulled out from the container body and fixed to its length is the circumference of the side plate of a rotating drum in which the measurement band is wrapped inside the tape measure box. A lever biased by a spring is brought into contact with the drum to stop the rotation of the rotating drum. In this case, in order to prevent the rotating drum from slipping, the lever is usually provided with non-slip sandpaper or the like. These items tend to wear out due to wear and tear.
In addition, combined with the narrow contact area, there is a drawback that the ability to stop rotation is lost in a relatively short period of time.

(Problems to be solved by the invention) This invention is a tape measure that can pull out the measuring strip of the tape measure and securely fix it at that length, and that can be securely fixed even when used for a long time. The purpose of the present invention is to provide a stop device for a tape measure, and to prevent the stop device of a tape measure from being activated inadvertently when the tape measure is pulled out or when the stop device of the tape measure is not desired to be used.

(Means for Solving the Problems) In the present invention, the inner end of the measuring strip 4 is attached to the central shaft 3 erected inside the container body having a lid, and the outer end can be pulled out from the container body 2. Rotating drum 5 wound around
A tapered hole 7 is formed in an engaging part 6 which is rotatably mounted on a rotary drum 5. A spring 10 for pushing up the push button is interposed between the center shaft 3 and the push button 9, and a retraction spring 11 whose inner end is attached to the center shaft 3 and outer end is attached to the rotating drum 5 is attached to the container. This is a tape measure stopping device characterized by being provided inside the body 2.

In addition, in the present invention, an engaging part 12 is provided on the shoulder part of the push button 9, and a locking part 13 formed on the lid part 1 is used when the rotating drum 5 rotates in the drawing direction when drawing out the measuring strip 4. The push button 9 is moved downward by engaging with the engaging portion 12, and the tapered hole 7 and the tapered portion 8 are separated, thereby avoiding friction between the tapered hole 7 and the tapered portion 8 and preventing wear.

(Function) In the present invention, when the measuring strip 4 of the tape measure is pulled out from the tape measure and the push button 9 is pressed to change its length, the tapered part 8 provided at the lower part of the push button 9 moves from the tapered hole 7. Since the engagement is released, the measurement band 4 is automatically wrapped around the rotating drum 5 by the restoring force of the retraction spring 11. Also, when pulling out the measuring strip 4 longer than the container body 2, the rotating drum 5
rotates and the measuring strip 4 is pulled out to a desired length, and when the pulling operation is stopped and the push button 9 is released, the spring 10 for pushing up the push button is expanded and the push button 9 is raised. , the tapered portion 8 engages with the taper hole 7 to stop the rotation of the rotating drum 5, and the pulled-out measurement strip 4 stops at the position of the pulled-out length, and the measurement strip 4 stops at the position required by the measurement strip 4. The length can be measured.

(Embodiment) In the present invention, a central axis 3 is provided approximately at the center of a container body 2 having a lid part 1 which is entirely made of an appropriate material such as plastic or metal, excluding measuring strips, springs, springs, etc. By interposing a retracting spring 11 between the rotating drum 5 which is rotatable around the rotating drum 5 and the central shaft 3, the measurement band 4 wound around the outer circumference of the rotating drum 5 is pulled out from the container body 2. The pulled out part can be retracted. A spring 10 for pushing up the push button is interposed between the upper part of the central shaft 3, the push button 9, and the interior thereof, and a tapered portion 8 provided on the push button 9 is removably engaged with the taper hole 7.

In this embodiment, the configuration is as described above, and in use, when the measuring strip material 4 is pulled out from the container body 2 and the length thereof is changed, the push button 9 is pressed. The tapered portion 8 is disengaged from the taper hole 7, and the measurement band 4 rotates the rotating drum 5 by the restoring force of the retracting spring 11 to wrap the measurement band 4 around the rotation drum 5. It is something.

In addition, in the present invention, when the engaging part 12 provided on the shoulder of the push button 9 is pushed to a position where it does not engage with the locking part 13 formed on the lid part 1 and then rotated, the force of pushing the push button 9 into the push button 9 is released. Locking part 13 even after
The engaging portion 12 can remain in a free state.

(Effects of the invention) In the tape measure according to the invention, which allows the measuring strip to be pulled out and retracted from the container body, the mechanism for stopping the rotation of the rotating drum engages the tapered part and presses it against it by the extension force of the spring, thereby stopping the rotation. Because it is a stopper, the contact area is narrower than the conventional structure in which the rotation of the rotating drum is stopped with a paper sander attached to a locking lever, and it is easy to wear and wear out.If the number of times of use increases, the rotation of the rotating drum will stop. Unlike when the force weakens, reliable operation is possible even after long-term use. In addition, by pressing the push button lightly, the measuring strip can be set in a free state, so it is not necessary to work while pressing the locking lever as in the conventional method, resulting in good work efficiency. Furthermore, it has a simple structure and can be manufactured at low cost, which has excellent effects.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is an exploded perspective view of main parts, and Fig. 4 is a cross-sectional view showing an embodiment of the present invention.
Figures 5 to 5 are cutaway perspective views of essential parts. 1 is a lid portion, 2 is a container body, 3 is a central shaft, 4 is a measuring strip, 5 is a rotating drum, 6 is an engaging portion, 7 is a tapered hole, 8 is a tapered portion, 9 is a push button, 10 1 is a spring, 11 is a retraction spring, 12 is an engaging portion, 1
3 is a locking part.

Claims (1)

[Scope of utility model registration request] The inner end of a measuring strip is attached to a central shaft that stands upright inside a container body that has a lid, and a rotating drum is rotatably mounted on the rotating drum, the outer end of which is wound so that it can be pulled out from the container body. A tapered hole is formed in the engaging portion fixed to the taper hole, and the head of the push button having the tapered portion that can be freely engaged and detached from the tapered hole protrudes from the lid portion, and a push button for pushing up the push button is formed between the central shaft and the push button. A stop device for a tape measure, characterized in that a retraction spring is provided inside a container body, the inner end of which is attached to a central shaft, and the outer end of which is attached to a rotating drum.