JPH088075Y2 - Log scriber - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a log scriber, and more specifically, in a structure in which two logs are assembled in an orthogonal shape or an inclined shape, one log end portion has the other log outer peripheral portion. The present invention relates to a log scriber used when forming a curved surface for engagement.

[0002]

As is well known, logs are sometimes used in columns, beams, joists, and other places in wooden structures such as log houses. When using these logs, one log and the other log are used. There are cases where the logs are assembled in an orthogonal shape or an inclined shape.

More specifically, as shown in FIG. 7, a structure in which a log 51 in a horizontal state is mounted on the upper end of a log 50 which is vertically erected, and the log 50 is vertically erected as shown in FIG. A structure in which the end of the log 51 in the horizontal state is attached to the outer periphery of the log 50, and a structure in which the end of the inclined log is abutted to the outer periphery of the horizontal or vertical log (not shown) is assembled. There is.

In the assembly structure shown in FIG. 7, it is necessary to form the curved surface 50a along the outer peripheral surface of the horizontal log 51 at the upper end of the vertical log 50, while the above-mentioned FIG.
In the assembly structure shown in (1), it is necessary to form a curved surface 51a along the outer peripheral surface of the vertical log 50 at the end of the horizontal log 51. In this case, in order to avoid deterioration of appearance and to perform firm assembly, there should be no gap in the assembly portion, and therefore, the curved surfaces 50a and 51a on both sides of the outer peripheral surface of the log on the other side are not formed. It must match the curvature.

Among the above-mentioned two types of assembling structures shown in FIG. 7, for example, a vertical log 50 using a scriber disclosed in Japanese Utility Model Laid-Open No. 64-9083 is used.
It is possible to draw the curved surface 50a. As shown in FIG. 9, this scriber has a first branch body 61 and a second branch body 62 that are bifurcated from the connecting portion 60, and a contact needle 61x is provided at the tip of the first branch body 61. A pencil 63 is fixed to the tip of the second branch body 62 while being formed, and a leveler 64 is attached to the connecting portion 60.

In the actual use of the scriber, as shown in FIG. 10, the horizontal log 51 is placed on the upper end of the vertical log 50 before cutting, and the first branch body 61 of the scriber is contacted with the horizontal log 51. The needle 61x is brought into contact with the outer peripheral surface of the horizontal log 51, and the pencil 63 at the tip of the second branch body 62 is brought into contact with the outer peripheral surface of the vertical log 50. A line is drawn in the vicinity of the upper end of the vertical log 50 by moving the scriber while maintaining the contact between the two and 62 and maintaining the horizontal state by the leveler 64 without opening and closing.

By performing such work, as shown in FIG. 11, the contact needle 61x of the first branch body 61 of the scriber is shown.
Moves along the orbits of A1, A2, A3, A4, A5,
The pencil 63 at the tip of 61 moves along the trajectory of B1, B2, B3, B4, B5. In this way, the trajectory B1 drawn on the vertical log 50 ...
B5 has a curvature corresponding to the diameter of the horizontal log 50, and by cutting along this orbit, the upper curved surface of the vertical log 50 is incorporated into the outer peripheral surface of the horizontal log 51 without any gap. Become. By moving the scriber in the same manner as shown in FIG. 12, the contact needle 61x moves along the trajectory of A1, A2, A3, A4, A5 as shown in FIG. At the same time, the pencil 63 moves along the orbits of B1, B2, B3, B4, and B5, so that it is possible to obtain the same effect as above even by such work.

[0008]

By the way, the scriber disclosed in the above publication can perform the wire drawing work satisfactorily as shown in the above example in the assembly structure shown in FIG. 7, but the assembly shown in FIG. It is impossible to perform the wire drawing work accurately for the attached structure.

That is, when the scriber horizontally turns in the ab direction in the state shown in FIG. 10 or 12, the contact needle
Since the two contact points of 61x and pencil 63 exist on the same vertical plane, the scriber only horizontally turns using these two points as fulcrums, and the positions of the two contact points are nothing. Although it does not change, when moving the scriber in the vertical direction in the state as shown in Fig. 14, no matter how exactly the scriber is maintained in the horizontal state, the scriber can freely move in the ab direction. Since the swivel movement is possible, the positions of the two points where the contact needle 61x and the pencil 63 contact each other are not fixed.

In other words, in the state shown in FIG. 14, even if the scriber contacts vertically at two points and moves in the vertical direction while maintaining the horizontal state, the scriber swings in the ab direction and moves at two points. If they were in contact, the orbit would not be uniform. Therefore, the scriber disclosed in the above publication cannot cope with the assembling structure shown in FIG.

Regarding the assembling structure of the inclined log and the horizontal log (not shown), the wire drawing work can be performed accurately in the same manner as the method shown in FIG. 10 or FIG. For the assembly structure with the vertical log, it is impossible to perform the drawing work for the same reason as above.

[0012]

The log scriber according to the present invention is characterized in that it is constructed as follows in order to solve the above-mentioned various problems. That is, a scriber having a first branch body and a second branch body that are bifurcated from a connecting portion and a writing means at the tip of at least one of the two branch bodies. , With a level and a compass.

[0013]

According to the above means, when the scriber according to the present invention is moved up and down in the state shown in FIG.
The operator can maintain the scriber in a horizontal state by visually observing the leveler, and at the same time, by visually observing the azimuth meter, the azimuth of the scriber can be kept constant and the horizontal turning movement in the ab direction can be restricted. The curve drawn on the horizontal log by the scriber has a curvature that matches the outer peripheral surface of the vertical log.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a log scriber 1 according to this embodiment includes a first branch body that is bifurcated from a connecting portion 2.
21 and a second branch body 22, a contact needle portion 3 is formed at the tip of the first branch body 21, and a pencil 4 as a writing means is detachably attached to the tip of the second branch body 22. Has been.

An attachment 5 is detachably attached to the log scriber 1 near the connecting portion 2, and a level 6 (level) and a compass 7 (direction) are attached to the attachment 5. And a magnet) are detachably attached. The mounting position of the leveling device 6 and the compass 7 is preferably near the connecting portion 2 as described above, but if necessary, in the longitudinal direction of the first branch body 21 or the second branch body 22. It is also possible to attach it near the center.

The first branch body 21 and the second branch body 22 are openable / closable, and the opening / closing operation is performed by the bending arm 8.
And is fixed by the fastening screw 9 at a desired opening degree.

Next, the operation of the above embodiment will be described. First, at the work site of a wooden building, as shown in FIG. 3, one end of a horizontal log 51 before cutting is brought into contact with the outer peripheral surface of the vertical log 50, and the log is held in this state. The first branch body 21 and the second branch body 22 of the car scriber 1 are fixed at a predetermined opening with the fastening screw 9.

In this state, the operator holds the log scriber 1 by hand and, as shown in the figure, attaches the contact needle portion 3 of the first branch body 21 to the outer peripheral surface of the vertical log 50. The tip of the pencil 4 of the second branch body 22 is brought into contact with the outer peripheral surface of the horizontal log 51, and the leveler 6 is visually recognized to bring the log scriber 1 into a horizontal state.

Next, the operator makes contact with the contact needle portion 3 and the pencil 4.
While the and are kept in contact with the outer peripheral surfaces of the logs 50 and 51, the log scriber 1 is moved downward while visually checking the leveler 6 and the compass 7.

During this movement, the operator is in a state where both the contact needle portion 3 and the pencil 4 are in contact with each other, that is, the log scriber 1 is in contact at two points, and the leveler 6 is used for the log scriber 1. Is horizontal and the compass 7
Thus, the log scriber 1 is always maintained in a state in which the log scriber 1 faces a certain direction in the north, south, east, and west.

This work is performed in the M direction and N direction shown in FIG.
By doing from both directions, the trajectory A1, A2, A3, A4, A5 of the contact needle 3 in the vertical log 50 and the trajectory B1, B2, B3.B4, B5 of the pencil 4 in the horizontal log 51 Is a front view of FIG.
The curve becomes as shown in FIG. 5 and becomes the curve as shown in FIG.

In this way, by maintaining the log scriber 1 in a horizontal state and at the same time maintaining its orientation constant, the curve drawn on the horizontal log 51 is a vertical log.
The curvature will match the outer circumference of 50, and thus the horizontal log
If 51 is cut along the above curve and this cut surface is engaged with the outer peripheral surface of the vertical log 50, no gap is formed between the two. Then, a nail or the like is driven into the engaging portions of the logs 50 and 51, so that the logs are fixed.

Further, as shown in FIG. 6, when the end face 51x of the slanted log 51a is assembled to the outer peripheral surface of the vertical log 50, the outer peripheral surface of the vertical log 50 is also attached in the same manner as described above. , One end of the inclined log 51a before cutting is brought into contact with and held, and under such a state, in the same manner as above,
An operator performs a wire drawing work with the log scriber 1.

That is, the contact needle portion 3 at the tip of the first branch body 21 of the log scriber 1 is brought into contact with the outer peripheral surface of the vertical log 50, and the pencil 4 at the tip of the second branch body 22 is inclined. log
In this state, the log scriber 1 is brought into contact with the outer peripheral surface of the 51a, and the log scriber 1 is leveled by the leveler 6. The log scriber 1 is moved downward while maintaining the state of facing the direction. Also in this case, the curve drawn on the end face 51x of the inclined log 51a is
The curvature is matched with the outer peripheral surface of the vertical log 50, so that the inclined log 51a can be assembled to the vertical log 50 with a nail or the like without any gap.

Instead of the structure of the above embodiment, if necessary, a pencil 4a as a writing means may be detachably attached to the tip of the first branch body 21 as shown in FIG. . With this configuration, it is possible to set 1 from both sides (M and N directions in Fig. 3) by setting the instrument once.
80 degree reverse graduation makes it possible to perform accurate drawing work. In the configuration of FIG. 2, the same components as those shown in FIG. 1 described above are designated by the same reference numerals and the description thereof will be omitted. Further, the above-mentioned writing means may be other than a pencil as long as it can draw a line.

Further, as shown in FIG. 2, an azimuth meter 7 is superposed on and integrated with the leveler 6, and the combined product is removably attached near the connecting portion 2 via a fixture 5. You may do it. In this case, it is necessary that the level gauge 6 below the azimuth gauge 7 can be visually recognized through the azimuth gauge 7 located above, and therefore the lower surface of the azimuth gauge 7 must be composed of at least a member having optical transparency. Also, level 6
As a means for combining the azimuth meter 7 and the azimuth meter 7, conversely to the above, the level gauge 6 may be superposed on the azimuth meter 7 so as to be combined, or in addition to these, for example, the azimuth gauge may be placed on the side of the level gauge 6. The total 7 may be fixed in parallel, and in such a case, it is preferable to dispose both in close proximity in order to visually recognize both at the same time.

[0027]

As described above, according to the log scriber of the present invention, the tips of both the first branch body and the second branch body have the outer circumference of the vertical log and the outer circumference of the horizontal (tilted) log. When the scriber is moved in the up-and-down direction in a state of being in contact with the surface, the operator keeps the scriber in a horizontal state by visually recognizing the leveler, and by visually observing the compass, Since the horizontal turning movement of the scriber can be regulated by keeping the azimuth of the scriber constant, the curve drawn on one or both logs has a curvature that matches the outer peripheral surface of the other log. Therefore, by cutting along this curve, the cut surface comes into close contact with the outer peripheral surface of the log of the other party without a gap, thereby improving the accuracy of work and the improvement of work efficiency. .

[Brief description of drawings]

FIG. 1 is a front view showing the appearance of a log scriber according to a first embodiment of the present invention.

FIG. 2 is a front view showing the outer appearance of a log scriber according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a usage state of the log scriber.

FIG. 4 is a front view showing a curve drawn by using the log scriber.

FIG. 5 is a plan view showing a curve drawn by using the log scriber.

FIG. 6 is a perspective view showing another log assembling structure in which the log scriber can be used.

FIG. 7 is a perspective view showing an assembly structure of logs that can be used by a conventional scriber.

FIG. 8 is a perspective view showing an assembly structure of logs in which a conventional scriber cannot be used.

FIG. 9 is a perspective view of a single unit showing a configuration of a conventional scriber.

FIG. 10 is a perspective view showing a usage state of a conventional scriber.

FIG. 11 is a front view showing a curve drawn using a conventional scriber.

FIG. 12 is a perspective view showing a usage state of a conventional scriber.

FIG. 13 is a side view showing curves drawn using a conventional scriber.

FIG. 14 is a perspective view showing a problem of a conventional scriber.

[Explanation of symbols]

 1 Log scribe 2 Connection 4 Writing means (pencil) 6 Level 7 Direction meter

Claims (1)

[Scope of utility model registration request] 1. A first branch body and a second branch body which are branched into two from the connecting portion, and a writing means is provided at the tip of at least one of the two branch bodies. A scriber for logs, which has a leveler and a compass attached to the scriber.