JPS594632Y2 - Auxiliary floor for cylindrical bed sewing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an auxiliary bed for a cylindrical bed sewing machine.

Conventionally, in order to be able to do not only cylindrical stitching but also flat stitching with a cylindrical bed sewing machine, an auxiliary floor was provided on the cylindrical bed sewing machine, and by attaching this auxiliary floor to the cylindrical bed,
The cylindrical bed can be changed to a flat bed.

However, conventional auxiliary beds are generally plate-shaped accessories, and it takes time to attach and remove them from the cylindrical bed.Furthermore, with the auxiliary bed attached, it is difficult to operate the lid part such as replacing the bobbin. The drawback was that it was difficult to do.

On the other hand, in order to improve the above-mentioned drawbacks of the plate-shaped auxiliary bed, a sheath opening at the top is provided at a distance from the cylindrical bed on the sewing machine base, and the upper edge of the sheath covers the opening of the sheath. A cover that closes the space between the cylindrical bed and the cylindrical bed can be opened and closed to form an auxiliary bed, and the cylindrical bed and the flat bed can be switched by rotating the cover, or , the cylindrical bed is in close contact with the sewing machine base,
A box-shaped auxiliary floor that can be moved in parallel to move away is installed.
It has been proposed to switch between a cylindrical bed and a flat bed by moving the auxiliary bed.

However, in the former case, the lid is attached to the sheath fixed to the sewing machine base via a hinge so that it can be opened and closed, so vibrations during sewing may cause the lid to collide with the sheath or the cylindrical bed, causing noise. There was also the disadvantage that the sheath part became a hindrance when used as a cylindrical bed.

On the other hand, with the latter box-shaped auxiliary floor that is movable, there is a risk that the auxiliary floor may shift during sewing, and to prevent this, it is necessary to fix the auxiliary floor with special screws, etc. Met.

This invention was made to eliminate the above-mentioned drawbacks.
The lid of the sheath provided on the base is attached so that it can be opened and closed and moved along the back of the sheath, and a spring is tensioned between the base and the lid, and the spring force closes the lid. When used as a flat bed, the lid is pressed against the upper end surface of the mating part, and when the lid is opened and used as a cylindrical bed, the lid is moved downward along the back surface of the sheath part. This is what we provide.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

A machine frame 3 consisting of an arm 1 and a cylindrical bed 2 is fixed to a base 4, and an auxiliary bed 5 is formed on the rear side of the cylindrical bed 2.

The auxiliary bed 5 is composed of a sheath part 6 and a lid 7, and the phase part 6 has a box shape with an upper opening, and is attached to the base 4 at a distance from the rear wall 2a of the cylindrical bed 2.

Further, the lid 7 covers the opening of the phase portion 6 and has a size that fills the gap between the phase portion 6 and the cylindrical bed 2.
When closed, as shown in FIG. 1, the upper surfaces of the cylindrical bed 2 and the lid 7 form one continuous flat surface.

A pin 8 is provided protruding from the rear end of both side surfaces of the lid 7, and a pin 8 of the lid 7 is provided on both side surfaces of the phase part 6 so that the rear end thereof protrudes from the rear wall surface of the phase part 6. Groove 9 into which 8 fits and slides
are provided vertically along the phase portion 6, and the lid 7 is attached to the phase portion 6 by fitting the pin 8 into the groove 9.

Further, a spring holding chamber 10 is provided inside the phase part 6, and a spring 11 is stretched between the base 4 and the center of the lower surface of the lid 7 within the holding chamber 10, as shown in FIGS. 4 and 5. are doing.

That is, when the lid 7 is closed, the spring 1 is activated as shown in FIG.
The lid 7 is pressed against the upper end surface of the phase part 6 by the spring force of 1 and is elastically fixed.

On the other hand, when the lid 7 is opened, as shown in FIG. It moves downward along the back surface of the phase part 6 and is similarly fixed by the spring force of the spring 11.

As explained above, according to the present invention, the sewing machine bed surface can be switched to a flat bed or a cylindrical bed with one simple action, thereby improving work efficiency.

In addition, when the lid is opened, it moves to the back of the mating part, so the lid does not get in the way of sewing work when it is not needed, and since a spring is installed between the lid and the base, the lid can be moved during sewing work. It can prevent vibration and noise.

On the other hand, the side part of the auxiliary floor has the advantage of being able to store sewing machine accessories, etc.

[Brief explanation of drawings]

Figure 1 is an external perspective view, Figures 2 and 3 are perspective views of the bed with the lid open and closed, Figure 4 is a cross-sectional side view of the bed with the lid closed, and Figure 5 is the lid. FIG. 1... Arm, 2... Cylindrical bed, 3... Machine frame,
4... Base, 5... Auxiliary floor, 6... Phase part, 7...
... Lid, 11... Spring.

Claims (1)

[Scope of utility model registration request] In a sewing machine having a base supporting an arm and a cylindrical bed, and an auxiliary bed additionally formed to enlarge the surface of the cylindrical bed, an upper opening formed on the base at a distance from the cylindrical bed is provided. An auxiliary floor is constituted by a sheath part and a lid provided on the upper part of the sheath part, which covers the phase opening and forms a flat surface continuous with the upper surface of the cylindrical bed, and the iron lid has a rear end part. An auxiliary floor for a cylindrical bed sewing machine, characterized in that the base can be opened and closed at the center and can move up and down along the back surface of the sheath when opened, and a spring is provided between the base and the iron cover.