JPH0533929Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a plumb bob spool used to check the verticality of a construction site, and particularly to a plumb bob spool suitable for being attached to various types of pillars.

For example, if the pillars of the construction site are made of expensive wood whose surface needs to be protected from damage, special measures will be required for attaching the spools.

The present invention was developed based on this point, and an object of the present invention is to provide a bobbin bobbin spool that is devised so that it can be easily used on a pillar.

In order to achieve the above object, the spool according to the first aspect of the present invention includes a plate made of a rigid material having an appropriate length and having a locking protrusion erected near one end in the longitudinal direction;
It is characterized by having a bobbin main body that is slidable in the longitudinal direction of the plate with respect to the plate and is fixed to the plate at an arbitrary position.

Further, in the bobbin winder according to the first claim, the bobbin main body becomes free when sliding in the direction approaching the locking protrusion between the plate and the bobbin body; The present invention is characterized in that it is provided with a ratchet that engages and prevents the slide when it slides away from the slider.

Moreover, the thread winding according to the third aspect is characterized in that the thread winding body according to the first aspect is rotatable with respect to the plate.

Further, the thread winding according to the fourth aspect is characterized in that, in the thread winding according to the first aspect, an elastomer for preventing slipping is adhered to the surface of the locking protrusion.

Next, embodiments of the present invention will be described with reference to the drawings.

As shown in the figure, the pincushion has a plate 1 made of a rigid material having an appropriate length and a locking protrusion 2 erected near one end in the longitudinal direction;
The plate 1 can be slid freely in the longitudinal direction,
It also has a bobbin main body 7 fixed to the plate 1 at an arbitrary position.

Plate 1 is approximately 220mm long and 55mm wide in actual size.
mm, thickness 2 mm, and a long hole 3 for guiding the sliding of the bobbin main body 7 along the longitudinal direction is bored approximately in the center of the plate surface, and a ratchet (described later) is formed on one edge of the long hole 3. A tooth portion 4 constituting the tooth portion 10 is formed. The locking protrusion 2 has a cylindrical shape with a length of about 25 mm in actual size, is perpendicular to the plate 1, and has a shape on its circumferential surface.
Equipped with anti-slip 5 made of elastomer.

The bobbin main body 7 has a disc shape with a diameter of approximately 75 mm and a height (length in the axial direction of the disc) of approximately 25 mm in actual size, and is located between the case 8 and the mounting member 9 which are divided into two in the height direction. Both members 8 and 9 sandwich the plate 1 therebetween.
is screwed to the plate 1 so as to be slidable and rotatable along the elongated hole 3.

The inside of the mounting member 9 engages with the teeth 4 of the plate 1 and becomes free when the bobbin main body 7 slides in the direction approaching the locking protrusion 2, so that the bobbin main body 7 is free from the locking protrusion 2. A ratchet 10 is provided which engages and prevents the slide when sliding in a far direction;
is equipped with an engagement release means for releasing the engagement.

A thread feeding hole 11 is provided at one end of the case 8 in the sliding direction so as to span both cases 8, 8. The other end of the case 8 in the sliding direction is a mating material contact surface 12 formed by cutting out a part of the disc, and the surface 12 has an actual size centered on the thread feeding hole 11. It is said to be a curved surface (curved in the height direction of case 8) with a radius of approximately 70 mm.

Inside the case 8, there is a pivot shaft 13, a rotating drum 14 around which a thread 15 is wound, and the drum 1.
A spiral spring 16 is installed to rotate the thread 4 in the direction of unwinding the thread 15, and the thread 15 is led out from the thread payout hole 11 via a pin 17 set up inside the thread payout hole 11. A flanged cylindrical mouthpiece 18 as shown in FIG. 7 is attached to the thread feeding hole 11. As shown in FIG.

When the above-mentioned spool is used, a heavy weight (19, a plumb bob) which has a suitable weight is connected to the tip of the thread 15, and is attached to the side of the pillar 20 as shown in FIG. 4. That is, first, the bobbin main body 7 is slid with respect to the plate 1 to widen the distance between the main body 7 and the locking projection 2, and the pillar 20 is sandwiched between the main body 7 and the locking projection 2, so that the main body 7 comes into contact with the mating material. Face 12
Slide the main body 7 in the direction in which the main body 7 approaches the locking protrusion 2 until it comes into contact with the pillar 20. Even if you release your hand after finishing this slide, the ratchet 10
Due to this function, the thread spool will not fall from the mounting portion of the pillar 20. Next, the required amount of thread 15 is let out from the main body 7 to measure the verticality of the pillar 20.

The above-mentioned thread winding has the following effects.

Dedicated plate 1 for attaching to pillar 20
Since this is provided, the work of attaching and detaching the thread winding to and from the pillar 20 becomes extremely easy, and the efficiency of the work can be improved. Moreover, this effect is further enhanced by providing the ratchet 10.

The thickness of the pillar 20 varies in size,
The spool is applicable over this wide range. Moreover, it can also be attached to either the left or right side of the pillar 20.

In the above thread winding, the plate 1 was originally the pillar 2.
0 parallel to the column 20 and its longitudinal direction
Although it is planned that the pillar 20 will be installed perpendicular to the longitudinal direction of the pillar 20, the verticality of the pillar 20 can be measured even if it is not installed in this direction. That is, first, considering the case where the plate 1 is not parallel to one surface of the column 20, even in this case, since the mating material contact surface 12 is formed into a curved surface centered on the thread feeding hole 11, the surface 12 is in contact with column 20, column 2 is always in contact with column 20.
The verticality of the pillar 20 can be measured by keeping the distance m between the thread feeding hole 11 and the thread feeding hole 11 constant at 70 mm. Further, even when the plate 1 does not face the pillar 20, since the bobbin main body 7 is rotatable with respect to the plate 1, the mating material contact surface 12 of the main body 7 faces the pillar 20.
The verticality of the column 20 can be measured for the same reason as long as it is in contact with the column 20.

Since a soft elastomer anti-slip 5 is attached to the locking protrusion 2 installed upright on the plate 1, even if vibration is applied to the column 20 during construction work (verticality correction work), the plate 1 will not move or the column 20 will
It never comes off.

A pin 17 set up in the case 8 is connected to the pin 1.
The case 8 is also provided with a cylindrical cap 18, so that the thread 15 rubs against the opening edges 18a, 18b of the cap 18. Therefore, the resistance value can be precisely controlled.

The above-mentioned pincushion can be attached to various objects, not only the square pillar-shaped pillar 20. Further, the locking protrusion 2 can be used as a hook to hang the entire bobbin. In this case, the thread 15 is engaged with the notch 6 formed in the plate 1.

As described above, the bobbin bobbin spool of the present invention can provide various conveniences in the work of checking verticality.

[Brief explanation of the drawing]

FIG. 1 is a front view of a spool according to an embodiment of the present invention;
Figure 2 is a plan view, Figure 3 is a side view, Figures 4 and 8 are perspective views showing the state of use, Figures 5 and 6 are explanatory diagrams of the internal structure, and Figure 7 is a view of the base. It is an enlarged sectional view. 1... Plate, 2... Locking protrusion, 3... Long hole, 4... Teeth, 5... Anti-slip, 6... Notch,
7... Bottle main body, 8... Case, 9... Mounting member, 10... Ratchet, 11... Thread pay-out hole, 1
2...Mating material contact surface, 13...Pivot, 14...Rotating drum, 15...Thread, 16...Spiral spring, 1
7...pin, 18...cap, 19...heavyweight, 20
...pillar.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A plate made of rigid material having an appropriate length and having a locking protrusion erected near one end in the longitudinal direction, and which is slidable in the longitudinal direction of the plate with respect to the plate. and a bobbin main body that is fixed to the plate at an arbitrary position. 2. Between the plate and the bobbin body, when the bobbin body slides toward the locking protrusion, it becomes free, and when the bobbin body slides away from the locking protrusion, it engages and locks the slide. 2. The bobbin bobbin spool according to claim 1, which is provided with a ratchet for blocking. 3. The bobbin bob spool according to item 1, in which the spool main body is rotatable relative to the plate. 4. The bobbin bobbin spool according to item 1, wherein an elastomer for preventing slipping is attached to the surface of the locking protrusion.