JP2003062375A - Cylindrical sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical sewing machine in which oil can be prevented from leaking out on a table. SOLUTION: This cylindrical sewing machine having a sewing machine frame 10 consisting of an arm part 11 and a bed part 12 with a cylindrical part 12a extending approximately in parallel to the arm part and a bed receiving base 20 placing the sewing machine frame 10 on its top face and fixed on the top face of the table 30 is provided, and in the first invention, an approximately rectangular channel 22a and a plurality of channels 22b connecting the rectangular channel with an oil storing part 21 provided inside of the bed receiving base 20 are provided on the approximately rectangular top face 22 of the bed receiving base, and in the second invention, one end part 42a of a cover 42 closing an opening part 12b provided on the bottom face of the cylindrical part 12a is extended above the inside of the oil storing part 21 on the bed receiving base 20.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a tubular sewing machine.

[0002]

2. Description of the Related Art A conventional tubular sewing machine will be described with reference to FIG.
And a bed pedestal 120 on which the sewing machine frame 10 is placed. The sewing machine frame 10 includes an arm portion 11 and a bed portion 12, and the bed portion 12 has a tubular portion 12a extending substantially parallel to the arm portion 11. The sewing machine frame 10 is attached to the bed pedestal 120 by a hinge 40 so that the sewing machine frame 10 can be raised and lowered. Bed cradle 12
0 is fixed on the upper surface of a table (not shown).

An opening 12b is formed on the bottom surface of the cylindrical portion 12a of the sewing machine frame 10, and the opening 12b is formed.
A cylinder cover 142 that closes the cylinder is attached. In this tubular sewing machine, oil is used to lubricate each portion in the sewing machine frame 10. Also, the bed cradle 120 is
The sewing machine frame 10 is used for fixing the sewing machine frame 10 on a table, but is also used as an oil tank for refueling.

[0004]

In the conventional cylindrical sewing machine, the arm portion 11 of the sewing machine frame 10 is used.
The oil 50 that has moved downward from the respective parts inside the mating surface of the bed 12 and the bed cradle 120 (the bed 12
The table may be soiled by leaking to the outside from the bottom surface of the bed and the top surface 122) of the bed cradle 120.

Further, the oil 50 scattered from the drive unit inside the sewing machine frame 10 leaks outside from the cylinder cover 142 at the lower portion of the cylindrical portion 12a, and travels along the outer wall of the sewing machine frame 10 to fall on a table (not shown) to be soiled. There was an occasion.

The oil 50 leaking on the table in this manner adheres to the sewn product and stains it to deteriorate the quality of the sewn product. Therefore, an object of the present invention is to provide a tubular sewing machine capable of preventing the oil 50 from the arm portion 11 from leaking to the outside from the upper surface 122 of the bed pedestal 120.

Another object of the present invention is to provide a tubular sewing machine capable of preventing the oil 50 from the cylinder cover 142 below the tubular portion 12a from leaking to the outside.

[0008]

In order to achieve the above object, according to the present invention, a sewing machine frame comprising an arm portion and a bed portion having a tubular portion extending substantially parallel to the arm portion, In a tubular sewing machine comprising a bed pedestal having a sewing machine frame mounted on the upper surface and fixed to the table upper surface, a substantially rectangular groove and the rectangular groove are provided on a substantially rectangular upper surface of the bed pedestal. There is provided a tubular sewing machine characterized in that a plurality of grooves are provided to connect the oil receiving portion provided inside the bed pedestal.

Further, in order to achieve the above object, according to the present invention, a sewing machine frame including an arm portion and a bed portion having a tubular portion extending substantially parallel to the arm portion, and the sewing machine frame as an upper surface. A bed pedestal mounted on the table and fixed to the upper surface of the table, wherein one end of a cover that closes an opening provided on the bottom surface of the tubular portion is an oil reservoir of the bed pedestal. There is provided a cylindrical sewing machine, which is characterized in that the cylindrical sewing machine is extended above the inside.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. The tubular sewing machine according to the present embodiment includes a sewing machine frame 10 and a bed pedestal 20 on which the sewing machine frame 10 is placed. The sewing machine frame 10 includes an arm portion 11 and a bed portion 12,
The bed portion 12 has a tubular portion 12a extending substantially parallel to the arm portion 11. The sewing machine frame 10 is attached to a bed pedestal 20 by a hinge 40 so that the sewing machine frame 10 can be raised and lowered. A packing 41 is interposed between the sewing machine frame 10 and the bed pedestal 20. The bed cradle 20 is fixed to the upper surface of the table 30.

The bed pedestal 20 has a box-shaped oil sump portion 21 having an opening at the top, and a substantially rectangular upper surface 22 of the oil sump portion 21 has a return groove 22a that surrounds the upper surface 22. A plurality of grooves 22b connecting the return groove 22a and the oil reservoir 21 are provided. As schematically shown in FIG.
A gradient is formed in the return groove 22a, and the groove 2 is formed at the deepest position.
2b is formed. In addition, as shown in FIG.
The slope 2b is formed so as to become deeper toward the oil reservoir 21. The packing 41 arranged between the bottom surface 12c of the bed portion 12 and the upper surface 22 of the bed pedestal 20 is attached inside the return groove 22a to facilitate the introduction of oil into the return groove 22a.

With such a structure on the upper surface 22 of the bed pedestal 20, the oil accumulated in the return groove 22a can be recirculated into the oil reservoir 21 of the bed pedestal 20. Return groove 22a and groove 2 provided on the upper surface 22 of the bed cradle 20
Since 2b is a structure that does not protrude from the outer contour of the sewing machine and is completely hidden from the outside, the oil recirculation function can be obtained without impairing the outer shape.

An opening 12b is formed on the bottom surface of the cylindrical portion 12a of the sewing machine frame 10, and the opening 12b is formed.
A cylinder cover 42 that closes the cylinder is attached. One end 42a of the cylinder cover 42 extends above the inside of the oil reservoir 21 of the bed pedestal 20 as shown in FIG. A felt 44 is attached to the cylinder cover 42 by a felt support 43. Felt 44
An oil core 45 is attached to the tip of the cylinder cover 45, and the tip of the oil core 45 extends further from the one end 42a of the cylinder cover 42 to the outside. Cylinder cover 42 and bed cradle 20
A gap is provided in the vertical direction between the two so as to prevent oil from being transmitted to the outside of the bed pedestal 20.

With this structure of the cylinder cover 42, the oil attached to the cylinder cover 42 can be returned to the oil reservoir 21 of the bed cradle 20 along the felt 44 and the oil core 45. Cylinder cover 42
The one end 42a, the felt support 43, the felt 44, and the oil core 45 do not project from the outer contour of the sewing machine but are completely hidden from the outside, so that the oil recirculation function can be achieved without impairing the external shape. Can be obtained.

[0015]

According to the present invention, a sewing machine frame including an arm portion and a bed portion having a cylindrical portion extending substantially parallel to the arm portion, and the sewing machine frame placed on the upper surface of the table. In a tubular sewing machine including a bed pedestal fixed to the bed pedestal, a substantially rectangular upper surface of the bed pedestal, a substantially rectangular groove, and the rectangular groove and the inside of the bed pedestal are provided. By providing the plurality of grooves connecting to the oil reservoir, it is possible to prevent oil from the arm from leaking to the outside from the upper surface of the bed pedestal.

According to the present invention, a sewing machine frame including an arm portion and a bed portion having a tubular portion extending substantially parallel to the arm portion, and the sewing machine frame placed on the upper surface of the table. In a tubular sewing machine having a bed pedestal fixed to the bed pedestal, one end of a cover that closes an opening provided on the bottom surface of the tubular portion extends above the inside of the oil reservoir of the bed pedestal. Therefore, it is possible to prevent the oil from leaking to the outside from the cover at the lower portion of the tubular portion.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a tubular sewing machine of the present invention.

2 is a plan view showing the bed pedestal of FIG. 1. FIG.

3A and 3B are diagrams schematically showing a return groove and a groove of the bed pedestal shown in FIG. 1, where FIG. 3A is a sectional view taken along the line AA of FIG. 2 and FIG. 3B is a sectional view taken along the line BB of FIG. In addition to the bed cradle, packing is also shown.

4 is a front view of the tubular sewing machine of FIG. 1. FIG.

FIG. 5 is an exploded perspective view of a conventional tubular sewing machine.

[Explanation of symbols]

10 sewing machine frame 11 Arm 12 beds 12a cylindrical part 12b opening 20 bed cradle 21 Oil reservoir 22 upper surface 22a reflux groove 22b groove 30 tables 42 Cylinder cover 42a One end

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3B150 AA12 CC07 GA04 GB06 GB07                       GB08

Claims (2)

[Claims] 1. A sewing machine frame including an arm portion and a bed portion having a tubular portion extending substantially parallel to the arm portion, and a bed receiver fixed on the table upper surface by mounting the sewing machine frame on the upper surface. In a tubular sewing machine including a table, a substantially rectangular upper surface of the bed pedestal is connected with a substantially rectangular groove and the rectangular groove and an oil reservoir provided inside the bed pedestal. A cylindrical sewing machine having a plurality of grooves. 2. A sewing machine frame including an arm portion and a bed portion having a tubular portion extending substantially parallel to the arm portion, and a bed receiver fixed on the table upper surface by mounting the sewing machine frame on the upper surface. In a tubular sewing machine including a table, one end of a cover that closes an opening provided on the bottom surface of the tubular section extends above the inside of the oil reservoir of the bed cradle. A cylinder type sewing machine.