JP3087807U - Electric tape measure - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to motorize the tape measure. A feeding band 2 is wound around a contact winding portion 19 of a tape measure 1 provided with a tip tool 10, and the other end of the feeding band 2 is wound around a gear reel 3. A worm drive gear 4 is mounted on the gear reel 3. And a motor 5 for rotating the same, and an output switch 6
And the energy is supplied by a battery 8, and is further controlled by a return switch 7.
9 is housed in a mainspring reel 9 containing a mainspring 90.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to an electric tape measure, and more particularly, to a convenient tool for automatically expanding and contracting a tape measure by incorporating a motor and a battery.

[0002]

[Prior art]

 Conventionally, it has been difficult to electrically operate such a tape measure. In the present invention, for example, a tape measure built in a mainspring, such as a cylindrical tape measure disclosed in Japanese Patent Application Laid-Open No. 62-269001, is driven by an electric motor. It is to try. At first, the present inventor simply attached a gear to the mainspring reel and tried driving the mainspring reel via the gear with a motor.However, if there were any obstacles when pushing out the tape measure, the winding part of the tape measure was clogged. It was a problem because it stopped working.

[0003]

[Problems to be solved by the invention]

 The present invention solves the problem that even if the tip of the tape measure hits an obstacle, the wound part of the tape measure becomes stuck and cannot move.It can be expanded and contracted with one touch, and a switch can be pressed with the tip of the tape measure or a button can be pressed. The purpose is to provide an electric tape measure that can be pushed and the door can be pushed.

[0004] That is, an object of the present invention is to provide an electric tape measure such as Son Goku's Iroi stick that can remotely control an object 5 m or 10 m away by making the tape measure rigid and strong.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the electric tape measure according to the present invention is configured such that the pay-out band 2 is wound around the closely wound portion 19 of the tape measure 1, and the other end of the pay-out band 2 is wound around the gear reel 3. The drive gear 4 and the motor 5 are connected to the motor.

The drive gear 4 meshing with the gear reel 3 is a worm gear so that the gear is self-locked.

[0007] Further, the feeding band 2 is made of metal foil and made strong.

Alternatively, the feeding band 2 is made of a high-tensile plastic film.

[0009]

[Action]

 Therefore, according to the electric tape measure of the first aspect, the tape measure 1 is reliably fed out by the operation of the feeding band 2 of the close-contact winding portion 19, and is electrically driven without clogging or slipping.

According to the second aspect, the worm gear reliably stops the movement of the tape measure. In the third and fourth aspects, the feeding band 2 made of a metal foil or a high-tensile plastic film ensures the movement of the tape measure 1.

[0011]

【Example】

 Embodiments will be described with reference to the drawings. In FIG. 1, a finger-shaped tip tool 10 is provided at the tip of a cylindrical tape measure 1, and a pay-out band 2 is wrapped around a tightly wound portion 19 of the tape measure 1. The feeding band 2 is made of a 0.05 mm stainless metal foil or a polyester film, has a strong tensile force, and has a thickness which is not bulky when wound.

The inner end of the feeding band 2 is fixed to the mainspring reel 9 and wound around the tape measure 1, and the other end is wound around the gear reel 3. Since the feeding band 2 is as thin as 0.05 mm, it is not bulky even when wound around the gear reel 3. Since the drive gear 4 of the worm meshes with the gear reel 3 to provide a self-locking function, the tape measure 1 is securely locked in the extending direction, which is extremely advantageous for the pressing force of the tip device 10.

The drive gear 4 is driven by a motor 5. The motor 5 is controlled by an output switch 6 and a return switch 7, and is supplied with energy from a battery 8. The rotation direction of the drive gear 4 is, of course, reversed by the output switch 6 and the return switch 7. A mainspring 90 is provided in the mainspring reel 9, and is held at an inner end by a split shaft 92. As the mainspring 90, a symmetrical mainspring is adopted, and silence and anti-vibration are devised. The split shaft 92 is fixed to the case 11. The tape measure 1 has a mounting portion 12 fixed and slides along a support post 14.

In the electric tape measure having the above structure, the tape measure 1 can be extended by pushing the output switch 6, rotating the drive gear 4 from the motor 5, and rotating the gear reel 3 to take up the feeding band 2. By pressing a distant button or switch with the tip tool 10, it can be conveniently used.

When the return switch 7 is pressed, the drive gear 4 is reversed from the motor 5, the gear reel 3 is turned to loosen the feeding band 2, and the tape measure 1 can be contracted by the force of the mainspring 90. (The force of the motor 5 is also applied.)

The door or the like can be opened by pushing a finger or the like with a finger-shaped tip device 10 provided at the tip of the tape measure 1, and the tape measure 1 is strongly pressed against the column 14 to be locked, and the door is closed by being hooked on the tip device 10. You can also.

FIG. 2 illustrates another example of the electric tape measure of the present invention. This embodiment is different from the previous embodiment in that the winding direction of the feeding band 2 around the gear reel 3 is different, and that a return portion 7 is provided instead of the return switch 7.

That is, in FIG. 2, since the feeding band 2 is closer to the elongation direction of the tape measure 1, the pushing force given to the tape measure 1 is larger and more powerful.

Further, the gear reel 3 and the drive gear are structured so that they can be disengaged from each other. That is, the motor 5 is provided with a fulcrum 52 and can swing about the fulcrum 52 together with the drive gear 4. Further, a restoring spring 56 is provided. The restoring spring 56 constantly meshes the drive gear 4 with the gear reel 3 and operates the return portion 7 to release the meshing. Has been given the role of restoring.

However, in the electric tape measure of FIG. 2, when returning the extended tape measure 1, the drive reel 4 is detached from the gear reel 3 by operating the return part 7, so that the gear reel 3 is in a free state. The tape measure 1 is wound and returned by the force of the mainspring 90.

[0021]

[Effect of the invention]

 Since the present invention is configured as described above, the following effects can be obtained. In the electric tape measure according to the first aspect, the pay-out band 2 is wound around the closely wound portion 19 of the tape measure 1, the other end of the pay-out band 2 is wound around the gear reel 3, and the drive gear 4 and the motor are mounted on the gear reel 3. Since the gear 5 is connected, the gear reel 3 is rotated from the motor 5 via the drive gear 4, and the pay-out band 2 is paid out, whereby the tape measure 1 can be strongly extended.

According to the second aspect, since the drive gear 4 meshing with the gear reel 3 is a worm gear and is self-locked, there is no need for a special lock device, and the tape measure 1 is securely locked in the elongating direction. Endure the power.

According to the third aspect, since the feeding band 2 is made of a metal foil, there is an advantage that even if it is wound around the gear reel 3, it does not become bulky and can withstand strong tension.

According to the fourth aspect, since the feeding band 2 is made of a high-tensile plastic film, it does not become bulky even when it is wound around the gear reel 3, and there is no danger of being damaged by contact with the tape measure 1. Therefore, there is no risk of cracking or cracking.

As described in detail above, the electric tape measure according to the present invention has many advantages, and is useful not only as a tape measure but also as a tool for remote control, and is therefore useful in industrial applications. It greatly contributes to development.

[Brief description of the drawings]

FIG. 1 shows a perspective view of the present invention.

FIG. 2 is a partially cutaway sectional view showing another example of the present invention.

[Explanation of symbols]

 1 Tape measure 2 Feeding band 3 Gear reel 4 Drive gear 5 Motor 6 Out switch 9 Spring reel 90 Spring spring

Claims (4)

[Utility model registration claims] 1. A feeding band 2 is wound around a closely wound portion 19 of a tape measure 1, the other end of the feeding band 2 is wound around a gear reel 3, and a drive gear 4 and a motor 5 are connected to the gear reel 3. An electric tape measure characterized by the following. 2. A drive gear 4 meshing with the gear reel 3.
Is a worm gear, and is self-locked. 3. The electric tape measure according to claim 1, wherein the feeding band 2 is a metal foil. 4. The electric tape measure according to claim 1, wherein the feeding band 2 is a high-tensile plastic film.