JPS6359352B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for sewing a tatami mat cover to a tatami floor.

Conventionally, in order to sew the tatami facing N to the tatami floor T, for example, as shown in FIGS. 4 and 5, the surface T ₃ of the tatami floor T is
The tatami face N is placed on the tatami mat face N, and both ends of the tatami face N are folded along the left and right frame faces T ₁ (short sides of the tatami floor) of the tatami floor T, and then folded and sewn to the back face T ₂ . As shown in the figure, the conventional method is to pierce the upper thread a obliquely (indicated by a dotted line) from a required position _P1 on the frame surface _T1 with a sewing needle to a position _P'1 on the back surface _T2 side, and then pass it through the lower thread b. Hook it in a loop shape a ₁ and pull it out again to position P _1. Next, thread the upper thread a through the outside of the stile surface T ₁ and connect the upper thread a and the lower thread b to the lower corner of the tatami floor T. Form a loop entanglement C on R, perform tightening stitches a' and b', and return to the stile surface T ₁ position.
The upper thread a is pierced from P ₁ to position P' ₁ on the back side T ₂ (indicated by the two-dot chain line), hooked onto the lower thread b in a loop shape, and pulled out to position _{P 1 .} Next, the upper thread a is moved by a certain distance parallel to the ridgeline of the lower corner R, and the above sewing operation is repeated sequentially to positions P ₂ , P' ₂ , P ₃ , P' ₃ , etc. until the frame is finished as shown in the figure. A so-called ladder-like stitch was used. However, in this sewing method, the thread stopping portions of the upper thread a and lower thread b are attached to the warp thread Na forming the tatami face N.
A ₁ , A ₂ , ... and B ₁ , B ₂ , ... are all fixed on a straight line that intersects perpendicularly, so that rushes knitted by both sewing threads a and b perpendicularly to the warp thread Na.
Nb cracks in a straight line at the straight part (opening between rushes), spoiling the appearance and each warp thread.
Since Na is tightened at the same level, tatamiomote N
When reusing, that is, turning over, the same parts have to be tightened and sewn again, which weakens the same parts of the warp threads and causes warp threads to break, shortening the durability of the tatami face N.

The present invention has been made to solve the above-mentioned conventional drawbacks, and it prevents the warp threads of the tatami facing from being directly tightened with sewing threads, and also prevents the tatami facing from loosening by tightly winding and sewing near the lower corners of the tatami mat. The purpose of the present invention is to provide a method for sewing tatami mats with a stile.

Next, the first embodiment of the present invention will be explained in FIGS. 1 and 2.
To explain according to the figure, T in the figure is a tatami floor, and the ends of the tatami face N are wrapped along the frame side _T1 and back side _T2 .

First, thread the upper thread Y ₁ diagonally from the ridge line F from a predetermined position Q ₁ on the frame surface T ₁ to a predetermined position Q' ₁ on the back surface T ₂ with a sewing needle, and hook it with the bobbin thread Y ₂ in a loop shape. m ₁ and pull it out again to the position Q ₁ side to form a reciprocating sewing part M _1. Then, in a vertical plane including this reciprocating sewing part M ₁ , thread the upper thread Y ₁ along the frame surface T ₁ to make a reciprocating reciprocating sewing part. Operates and upper threads
Y ₁ and bobbin thread Y ₂ are tied together to form a loop U ₁ on the outside of the frame surface T ₁ and the back surface T ₂ to provide tightening portions S ₁ and S′ ₁ ,
Further, sew back and forth from position Q ₁ to position Q' ₁ on back side T ₂ , and hook it in a loop with bobbin thread Y ₂ , m' ₁ , and then sew the sewing area back and forth.
Perform M′ ₁ to finish winding and sewing part Ma. Next, upper thread Y ₁
Move it from position Q ₁ of winding part Ma to position L ₁ horizontally and diagonally above at a predetermined interval to form presser part x ₁ , and pierce it diagonally from position L ₁ to position L _{′ 1 of} back side T 2 The tension portion _D1 is formed by hooking the bobbin thread _Y2 in a loop shape and pulling _it out toward the original position _L1 . In addition, in this case, the lower thread Y ₂ also corresponds to the upper thread Y ₁ and has a diagonal presser part x′ ₁
is formed. Next, the needle thread Y ₁ moves from the position Q ₁ to the same position Q ₂ separated by a predetermined distance, and the winding stitch Mb is performed in the same manner as the winding stitch Ma. In addition,
At this time, the position L ₁ and the position Q ₂ of the tension part D ₁ and the position
Between L′ ₁ and position Q′ ₂ , upper thread Y ₁ and lower thread Y ₂ correspond to presser portions x ₁ , x′ ₁ and oblique presser portions x ₂ , x having the shape of a mountain as shown in the figure. ′ ₂ is formed. Also,
The tension part D ₁ is provided at approximately the center position between the winding parts Ma and Mb, and is hereinafter referred to as tension parts D ₂ , D ₃ ... and the winding seam part.
By repeating the sewing operations of Mc, . . . , a Y-shaped seam (not shown) is formed on the stile surface T ₁ and the back surface T ₂ , and the tatami face N is sewn to the stile surface T ₁ of the tatami floor T.

Next, to explain the effect of this embodiment, first, the lower corners of the frame surface T ₁ and the back surface T ₂ are made on the same plane using two sewing threads, upper thread Y ₁ and lower thread Y ₂ . At the shared positions Q ₁ and Q′ ₁ , a reciprocating sewing part M ₁ is formed, and then the upper thread Y ₁ and the lower thread Y _{2 are} sewn on the outside of the lower corner.
and are intertwined in a loop U ₁ to provide tightening parts S ₁ and S′ ₁ ,
Furthermore, a reciprocating sewing part M' ₁ is formed at the same position Q ₁ , Q _{' 1} to form a winding sewing part Ma, and then a reciprocating sewing part M' 1 is formed at a predetermined interval from the positions Q 1 , Q' ₁ and at a position Q ₁ , Q' _{1 .} Sewing back and forth at the higher positions L ₁ and L′ ₁ shown in the figure to create the tensioned area D ₁
, and the following winding part Mb, ... and tension part D ₂ ,
... are formed alternately, and diagonal holding parts x ₁ , x ₂ , ... are formed between the winding part and the tension part. Therefore, the winding seams Ma, Mb, ... are tightly tightened and can prevent the bulging of the stile surface _T1 side of the tatami bed T formed by compressing the straw, and also prevent the tatami face N from expanding. It can be sewn firmly to prevent it from coming loose. In addition, tension parts D ₁ , D ₂ , ... are provided between the winding parts Ma, Mb, ..., and presser parts x ₁ , ... are provided between the winding parts and the tension parts.
x ₂ ... is provided, this presser part x can press the rushes Nb of the tatami surface N diagonally to prevent the tatami surface N from loosening, and this presser part x can also directly press the rushes Nb. There is no need to break the rush Nb, and moreover, the seams Ma, Mb, . . . create a substantially Y-shaped seam, and the sewn state of the frame surface _T1 can be beautifully finished. In addition, this presser foot x is a rush Nb
Since the warp threads Na of the tatami facing N are not directly pressed, the warp threads Na can be prevented from breaking and the durability of the tatami facing N can be significantly increased. In addition, by providing the tension parts D ₁ , D ₂ , ... between the winding seams Ma, Mb, ... to form the pressing parts x, x', the winding seam parts Ma, Mb, ...
Mb, ... The upper thread Y ₁ and the lower thread Y ₂ are mutually tensioned to prevent the entire seam from loosening.

Next, FIG. 3 shows a second embodiment of the present invention. The winding parts Ma', Mb', ... of this second embodiment are formed in the same manner as in the first embodiment. In the second embodiment, the tension portion D ₁ is the piercing position l ₁ , l′ ₁ of the upper thread Y ₁ as shown in the figure, the winding portion Ma, Mb,
... piercing positions Q ₁ , Q ₂ , ... and Q' ₁ , Q' ₂ , ...
The winding part Ma,
Mb, . . . and presser portions x ₁ , x ₂ , .
Therefore, this second embodiment also provides the same effects as the first embodiment.

In addition, in the first and second embodiments described above, the tension portions D ₁ , D ₂ , . . . and the tension portions D′ ₁ , ′ ₂ , .
formation positions L ₁ L′ ₁ , L ₂ L′ ₂ , … and positions l ₁ l′ ₁ ,
l ₂ l′ ₂ , ... are the positions of the winding parts Ma, Mb, ..., respectively.
Q ₁ Q′ ₁ , Q ₂ Q′ ₂ , ... are shown as being formed at higher or lower positions, but they may be formed at the same position. Furthermore, it goes without saying that the above-mentioned frame stitching method can be applied not only to machine stitching but also to hand stitching.

As described above, the present invention alternately forms winding parts and tension parts, and uses a substantially Y-shaped seam or a substantially M-shaped seam as a continuous seam to sew the tatami surface.
The rolled and sewn parts provide strong tightening to prevent the bulge of the stile surface of the tatami floor formed by compressing straw, and the tatami surface can be sewn firmly to prevent it from loosening. . In addition, by providing a diagonal pressing part between the winding part and the tension part, the rushes on the tatami surface are pressed diagonally to prevent the tatami surface from loosening, and the rushes are not broken. A Y-shaped or substantially M-shaped continuous stitch can be formed, and the seam condition of the frame surface can be beautifully finished. In addition, since the presser foot does not directly press the warp threads of the tatami surface,
It has many advantages, such as being able to prevent warp threads from breaking and significantly increasing the durability of the tatami facing.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, and FIG.
The figure is a partially enlarged schematic perspective view of the stile showing the sewing order.
Fig. 3 is a partially enlarged schematic perspective view of the frame section showing the second embodiment of the sewing order, Fig. 4 is a perspective view showing the conventional tatami face sewing state, and Fig. 5 also shows the sewing order. FIG. T...Tatami floor, _T1 ...Stile side, _T2 ...Back side, N...
...Tatami facing, Na...Warp thread, Y ₁ ...Upper thread, Y ₂ ...Lower thread, M ₁ , M' ₁ , M ₂ , M' ₂ ... Reciprocating sewing part, S ₁ , S' ₁ ,
S ₂ , S' ₂ ... Tightening part, U ₁ , U ₂ ... Loop entanglement,
m ₁ , m′ ₁ , m ₂ , m′ ₂ , d ₁ , d ₂ ... Latch, Q ₁ ,
Q′ ₁ , Q ₂ , Q′ ₂ , L ₁ , L′ ₁ , L ₂ , L′ ₂ , l ₁ , l′ ₁ , l ₂ ,
l' ₂ ...Piercing position, D ₁ , D ₂ , D' ₁ , D' ₂ ... Tension section, x ₁ , x' ₁ , x ₂ , x' ₂ ... Pressing section.

Claims (1)

[Scope of Claims] 1. When sewing the tatami face to the tatami bed using two sewing threads, the upper thread and the bobbin thread, (a) the upper thread is attached to the tatami bed from a predetermined height position on the frame surface of the tatami bed; Diagonally pierce the back side of the thread, pass the bobbin thread through the loop of the needle thread, hook it, and return to the original position to form a reciprocating sewing part. (b) Next, the needle thread is reciprocated along the frame surface in a vertical plane that includes the same part as the reciprocating sewing part, and the needle thread and bobbin thread are intertwined in a loop on the outer side near the lower corner of the frame surface. to form a tightening part. (c) Next, the upper thread is reciprocated at the same position as in the above (a) to form a reciprocating sewing part and finishing the winding sewing part. (d) Next, move the upper thread and lower thread by a predetermined interval in a crosswise manner with respect to the warp threads of the tatami surface, and move the upper thread from a position higher or lower than the point where the winding part pierces the stile surface of the tatami floor. Diagonally pierce the back side, pass the bobbin thread through the loop of the upper thread, hook it, return to the original position, form a tensioned part, and create a diagonal thread between the winding part and the piercing position of the tensioned part. A shaped holding part is formed. (e) Next, move the upper thread and bobbin thread again by a predetermined distance and perform the sewing operations described in (a), (b), and (c) above to form a winding part and connect it to the piercing position of the tension part. Form a diagonal presser part. Hereinafter, there is provided a method for sewing a tatami mat cover, which is characterized in that the tension portions and the winding portions are alternately formed, and a continuous seam in a substantially Y-shape or a substantially M-shape is formed using a presser portion.