JP3009902U - Plumb bob - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] To enable easy and reliable selection of the distance between the wall surface and the sling. [Structure] A container 2, a drum 3 in which a hanging spring for urging in a winding direction is wound and a hanging string 4 is wound, fixing means 5 and 7 to a wall surface, and the hanging string 4 is externally provided from below the container. In a lowering swinging tool composed of a delivery port 9 that guides to the above and a weight that is detachably connected to the end of the hanging string 4, a movable part 8 in which a part of the container 2 around the delivery port 9 can be moved and fixed. By moving the movable portion 8, it is possible to easily set the interval between the measurement wall surface and the hanging strap that suits the user's preference.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plumb bob used for measuring the verticality of columns and walls during construction of buildings and the like.

[0002]

[Prior art and problems]

 In the known plumb bob, the hanging strap is wound around the drum that is normally biased by the winding spring in the container, and the container is fixed or magnetically attached to the measurement location such as a wall surface or a pillar to pull out the hanging strap. It measures the verticality of the measurement wall by suspending it. The verticality of the wall is measured by comparing the length between the wall surface and the hanging strap of the feeding port with the interval between the wall surface at the arbitrary point below and the hanging strap. Will be vertical. However, the distance between the front surface of the container fixed on the wall, which is the unit of measurement for comparison, and the hanging strap of the payout port may be preferred by the user, or may be different depending on the country when exported to another country. Since the units of measurement are different, it is necessary to make the intervals easy to measure in the units of measurement of each country.

This is because the fixed position of the plumb bob on the wall and the measurement position below are usually quite a distance, and the distance between the upper wall and the suspension strap cannot be ascertained in each case. This is because it is desirable that the measurement unit is easy to remember and that is easy to remember (for example, 5 cm). Even in Japan, some people still use the unit of measurement, and it is desirable that the measurement interval be selectable by the user, but there is no known plumb bob that can easily and surely change the measurement interval.

[0004]

【Purpose】

 An object of the present invention is to provide a plumb bob which allows the distance between the wall surface and the sling to be easily and surely selected according to the preference of the user.

[0005]

[Prior art and problems]

 The gist of the present invention is that a container, a drum in which a hanging spring for urging in a winding direction is internally wound, a fixing means at a measuring place, and a hanging string from below the container are externally attached. In the lower swinging tool consisting of a delivery port that guides to the above and a weight that is continuously connected to the end of the hanging cord, a part of the container around the delivery port becomes a movable part that can be moved and fixed. The swing-down device is characterized in that the movable portion is provided with a feeding port.

The present invention will be described in more detail. The container is usually formed by stacking half containers made of plastic or metal, in which a drum around which a hanging string is wound is freely rotatable. In the drum, a winding spring for biasing the drum in the winding direction, preferably a constant torque spring is provided. Winding energy is accumulated when the sling is unwound.

The fixing means to the measuring place may be a piercing tool or a magnetic stick depending on the material of the wall surface, and both of them may be provided. The feeding port is an opening for feeding the hanging string outward from the drum, and is provided below the container. A weight is connected to the end of the hanging string. This weight is removable and can be replaced with a different weight. The present invention is characterized in that in the plumbing tool as described above, a part of the container around the feeding port is a movable part that can be moved and fixed.

That is, a container portion including a container outlet for guiding the hanging cord is provided as a movable portion, and the movable portion is movable by rotation or slide and is fixed at a desired position. The movable part is preferably a rotatable disc, and the delivery port is provided so as to be offset from the disc. Further, the movable part is not limited to a rotatable disk, but may be a slide plate that slides in the front-rear direction, and its form does not matter. Any means such as fitting, screwing, joining or the like may be used as the fixing means of the movable part. For example, a plurality of protrusions are provided on the movable part and a pin can be inserted into the groove between them from the outside of the container. You may do it.

[0009]

[Action]

 Since the present invention is configured as described above, the movable part having the feeding port through which the sling string penetrates is moved, and the interval between the sling string and the front surface of the container in contact with the wall surface is selected according to the user's preference. The movable part may be fixed by the fixing means before use.

[0010]

【Example】

 DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing the embodiments, reference numeral 1 is a plumb bob body, 2 is a container thereof, 3 is a drum installed in the container 2, and a spring for urging a hanging string 4 in a winding direction ( (Not shown). Reference numeral 5 is a magnet that is mounted almost flush with the front surface 6 of the container 2, and is used when the measurement wall surface is a magnetic material. Numeral 7 is a piercing tool that has a needle at the tip and fixes the main body to the wall surface by pushing the needle out from the front surface. It is used when the measurement wall surface is a pierceable material such as wood. Reference numeral 8 denotes a disk-shaped movable portion which is rotatably fitted to the lower surface of the container 2 and is provided with the feeding port 9 of the hanging string 4 deviated, and the movable portion 8 has two convex portions provided on the upper surface thereof. A groove 11 constituted by a strip 10 and a fixing means 13 composed of a pin 12 which can be inserted from the outside of the container 2 are provided in the groove 11, and the movable portion 8 is prevented from rotating by this and is attached to the container 2. Fixed. Reference numeral 14 is a weight connected to the lower end of the hanging string 4.

[0011]

【effect】

 As described above, according to the present invention, since the movable portion 8 is movably and fixedly provided on the container 2 of the plumb bob, the space between the front surface 6 of the container 2 and the sling cord is necessary or according to the user's request. The measurement interval can be easily changed. Further, in the case of the disk-shaped movable portion 8, if the movable portion 8 is rotated 180 degrees, it is possible to change the distance between the front surface 6 of the container 2 and the hanging strap and easily fix it.

[Brief description of drawings]

[Figure 1] Partially cutaway side view

FIG. 2 is a perspective view of a movable portion and a pin portion.

[Explanation of sign]

1-lower swing main body, 2-container, 3-drum, 4-hanging string, 5-magnet, 6-front surface, 7-piercing tool, 8-movable part,
9-feeding port, 10-ridge, 11-groove, 12-pin, 13
-Fixing means, 14-Weight

Claims (3)

[Scope of utility model registration request] 1. A container, a drum in which a hanging spring for urging in a winding direction is internally wound, a fixing means to a measuring place, and a repeater for guiding the hanging string to the outside from below the container. In a plumbing pendant comprising an outlet and a weight that is removably connected to the end of the hanging strap, a part of the container around the delivery port is a movable part that can be moved and fixed. Plumb bob 2. The swing-down device according to claim 1, wherein the movable portion is a rotatable disc, and the feeding port is provided in an offset manner on the disc. 3. A groove is provided on the upper surface of the movable portion,
The swing-down device according to claim 1, wherein the movable part is fixed by inserting a pin into the groove.