JPS5839845Y2 - Electric saw for cutting tatami floors - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an electric saw for cutting tatami floors.

If some of the pillars of the Japanese-style room protrude inward from the threshold, or if you dig a hearth or kotatsu in the Japanese-style room, as shown in Figure 1, place a part of the tatami floor 1, for example the corner 1a, above the pillar. , according to the size of the hearth, kotatsu, etc., and the cut surface 1b
, the IC is cut so as to be inclined slightly downward with respect to the vertical plane (the inclination angle θ is approximately 7°), and a tatami mat (not shown) is folded over the cut surface 1b and the IC. .

Traditionally, a knife was used to cut the tatami floor 1, but when a knife is used, the frictional force applied to both sides of the knife is large, so a large amount of force is required to cut the tatami floor. However, when the cutting edge wears out, the sharpness immediately deteriorates.

Therefore, recently, electric saws 2 for woodworking as shown in FIGS. 2 and 3 have been used.

This electric saw 2 has a main body 3 with a built-in motor (not shown), and has a handheld handle 3a on the upper part thereof, and an elongated saw blade 4 that reciprocates in the vertical direction is attached to the lower front surface of the main body 3. Concave bottom surface 5a with an arc-shaped cross section on the lower center surface
A metal 5 is fixed to the support, and a convex upper surface 7a having an arcuate cross section of an adjustment fitting 7 fixed to the upper surface of a flat sliding base 6 rotates on the concave bottom surface 5a of the metal 5. They are fitted freely and fixed in any phase by bolts 8 and nuts 9, and by adjusting the phase, the left and right inclination angles of the saw blade 4 with respect to the vertical line can be arbitrarily set.

However, in the conventional electric saw 2 described above, in order to cut the tatami floor 1 in the direction of arrow P and then in the direction of arrow Q in FIG. At that time, the bolt 8 must be loosened, the inclination direction must be changed, and the bolt 8 must be tightened again while adjusting the inclination angle.
The work was troublesome.

This invention provides an electric saw for cutting tatami floors that does not require changing the direction of the saw blade depending on the cutting direction of the tatami floor.

An embodiment of this invention will be described below with reference to FIGS. 4 and 5.

In FIG. 4, the left and right sliding bases 10.10 are formed in a cross-sectional shape consisting of a low-height projecting edge portion 10a and a flat bottom plate portion 10b.
10, the projecting edges 10a, 10a are located outward,
The bottom plate parts 10b, 10b are connected by a connecting fitting 11 so as to face each other with a long gap in the front-rear direction.

The above-mentioned connecting fitting 11 has a convex upper surface 11 a having an arcuate cross section, similar to the adjusting fitting 7 of FIGS. 2 and 3, and
A long hole 11b in the width direction is bored in the convex upper surface 11a, but the flange portion 11C is bent slightly upward from the horizontal line, so that when the sliding base 10.10 is connected, the left and right The width directions of the bottom plate portions 10b, 10b are each inclined at the angle θ with respect to the horizontal line, so that the outer end is slightly higher than the inner end.

Then, the connection fitting 11 fixed to the sliding base 10° 10 is connected to the electric saw body 3 as shown in FIG.
The receiver fixed to the lower surface of the metal plate 5 is symmetrically fixed to the metal plate 5 by bolts 8 and nuts 9.

In the above structure, as shown in FIG. 5, when the bottom plate part 10a of one sliding base 10 comes into contact with the upper surface of the tatami floor 1, the saw blade 4 is inclined at an angle θ with respect to the vertical line. .

Therefore, when the electric saw body 3 is driven in this state and one of the sliding bases 10 is slid along the upper surface of the tatami floor 1, the tatami floor 1 will be cut with its cut surface inclined by the angle θ. .

Since the left and right sliding bases 10.10 are fixed symmetrically, by bringing the other sliding base 10 into contact with the tatami floor 1, the tatami floor 1 is tilted in the opposite direction by an angle θ. disconnected.

In addition, when cutting the tatami floor 1 along a straight line, the protruding edge 10
Of course, the outer surface of a can be placed against a straight ruler and slid.

In the above embodiment, the receiver may be formed by integrally forming the metal member 5 and the connection fitting 11, or the contact surface between the two may be formed into a flat surface.

Further, instead of the elongated hole 11b, a circular hole through which the bolt 8 can be inserted may be formed.

Furthermore, the protruding edge portion 10a of the sliding base 10 can be omitted.

Furthermore, the left and right sliding bases 10.10 may be connected to each other except for the portion through which the saw blade 4 passes.

As explained above, this device has an elongated saw blade protruding downward from the front lower surface of the main body that reciprocates in the vertical direction, and a pair of left and right sliding bases on the central lower surface of the main body at both left and right ends. Since it is fixed at an angle slightly higher, simply by changing the sliding base that contacts the tatami floor from one side to the other, the direction of inclination of the saw blade can be changed to the opposite direction, unlike the conventional saw blade. The troublesome work of loosening and tightening nuts is no longer necessary.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a tatami floor cutting section, Fig. 2 is a perspective view of a conventional electric saw, Fig. 3 is a front view of a conventional electric saw in use, and Fig. 4 is a schematic diagram of an embodiment of this invention. FIG. 5 is a perspective view of the moving base and a front view of the embodiment in use. 1: Tatami floor, lb, IC: cutting surface, 3: electric saw body, 4: saw blade, 10: sliding base.

Claims (2)

[Scope of utility model registration request] (1) An elongated saw blade that reciprocates in the vertical direction is provided on the lower surface of the front of the main body, protruding downward, and one on the left and right on the lower surface of the center of the main body.
An electric saw for cutting tatami flooring, characterized in that a pair of sliding bases are tilted and fixed at both left and right ends so as to be slightly higher. (2) The electric saw for cutting tatami flooring according to claim 1, wherein the sliding base has an inclination angle of about 7 degrees with respect to the horizontal plane on both the left and right sides.