Patent Application
20180148873
This application is based upon and claims the benefit of priority from Japan Patent Application No. 2016-232160, filed on Nov. 30, 2016, the entire contents of which are incorporated herein by reference.
The present disclosure relates to a waste catch plate for a sewing machine which receives wastes created by sewing works.
A type of sewing machines is a lock sewing machine that applies overcast stich on an end of a cloth while cutting the cloth. The overcast stich is a sewing method which sews an end of a cloth by tangling threads, thereby preventing the end of a cloth from being fraying. Such lock sewing machine is provided with a cutting member, such as a knife or a cutter, that cuts a cloth, and when a cloth is cut, tag ends, lint, and dusts, etc., are created.
In order to collect such waste, some sewing machines are provided with a sewing machine flat base including waste catch. That is, this flat base includes an opening to which a bag for catching wastes is attached, and a placement plane on which the sewing machine is placed. Such a flat base is placed in such a way that the opening protrudes from a table and the placement plane is positioned on the table, and by placing the sewing machine on the placement plane, the flat base is held between the table and the sewing machine, and is stationary fastened to such a position.
A lock sewing machine is provided with a guide groove for guiding wastes between a location where the cutting member is provided and the opening for catching the wastes, and the wastes produced when a cloth is cut at the location where the cutting member is provided are guided to the opening via the guiding groove, and are collected by a bag provided at the opening.
Meanwhile, the flat base provided with a waste catch is for placing a sewing machine, thus having a larger area than that of the sewing machine, and the placement plane is formed as a surface of the flat base. In addition, right below the placement plane of the conventional flat base, multiple legs are provided with distance for each other for placing the sewing machine on the table, and the respective legs of the sewing machine are mounted on such legs. That is, markings for positioning the legs of the sewing machine are provided on the placement plane, and a user positions the legs of the sewing machine with the markings, and places the sewing machine on the placement plane.
However, since the sewing machine is heavy and the legs are provided on the bottom, it is difficult to mount the legs of the sewing machine on the respective markings by visual check with the sewing machine being lifted, and the legs of the sewing machine are often not mounted right above the legs of the flat base. In this condition, the placement plane is likely to be bended, causing the sewing machine to vibrate up and down. Hence, there are problems such that it becomes difficult to see the location where a sewing work is performed, making the sewing work difficult. In particular, in the case of lock sewing machines, since a cloth is to be cut, it cannot start over the work, and thus the problems such that the flat base is bended and the sewing machine vibrates up and down are an obstacle for performing a sewing work.
The present disclosure has been made to address the above technical problems, and an objective is to provide a waste catch plate for sewing machine that suppresses a vibration to facilitate a sewing work.
A waste catch plate for sewing machine according to the present disclosure is held between a sewing machine and a table, and catches wastes produced by a sewing work by the sewing machine, and the waste catch plate employs the following structure.
(1) A plate main body in a tabular shape.
(2) The plate main body includes a placement plane provided in a partial region of the plate main body, and on which the sewing machine is to be placed, and an opening provided in a remaining region of the plate main body continuous and adjacent to the partial region, and to which a bag for collecting the wastes is attached.
(3) On a back surface of the region of the plate main body where the placement plane is provided, a thin leg spreading on the back surface is provided so as to cover a region surrounded by a plurality of legs of the sewing machine being placed on the placement plane.
According to the present disclosure, the following structure may be employed.
(1) The leg is formed of an elastic material, and a thickness of the leg is equal to or smaller than 3 mm.
(2) The leg is formed of a material containing butyl rubber, nitrile rubber, natural rubber, isoprene rubber, urethane rubber, silicone rubber, styrene-butadiene rubber, chloroprene rubber, acrylic rubber, sponge rubber, or vinyl chloride.
(3) A bent portion standing upright from the placement plane as a bottom is provided along a circumference of the plate main body.
(4) The above waste catch plate further includes a frame body to be fitted in the opening, and for attaching, to the opening, a bag for collecting the wastes, and a restriction portion protruding inwardly in the opening so as to contact the frame body is provided on an inner circumference of the opening.
(5) A shape of an outer circumference of the frame body facing the inner circumference of the opening is symmetrical in vertical, horizontal, and back-and-forth directions.
(6) On a bottom of the inner circumference of the opening, a projection protruding inwardly in the opening, and supporting the frame body fitted in the opening is provided.
(7) The projection is provided circularly on the inner circumference of the opening, and a notch is provided in a part of the projection.
(8) A protrusion protruding more than the leg is provided on aback surface of the region including the opening of the plate main body, and an edge of the protrusion, the edge facing the leg is an abutment to be in contact with an edge of the table.
According to the present disclosure, a waste catch plate for sewing machine that facilitates a sewing work by suppressing a vibration is provided.
A waste catch plate for sewing machine according to an embodiment of the present disclosure will be described below with reference to the accompanying figures.
[1-1. Structure]
As illustrated in
As illustrated in
The plate main body 10 is a substantially flat tabular body, and is formed by, for example, integral molding with a resin like ABS. In this case, the plate main body 10 has an outer shape is formed in a rectangular shape, and roughly divided into two regions. That is, the plate main body 10 is divided into a placement region that occupies large part of the entire region, and a waste catch region that is provided in sequence and adjacent to the placement region and occupies the remaining part. In this embodiment, the plate main body 10 includes a placement plane 11 on which the sewing machine is placed, and an opening 12 which is provided adjacent to the placement plane and which catches the wastes.
The placement plane 11 is a flat surface on which the sewing machine is placed, and occupies large part of the surface of the plate main body 10. The thickness of the region where the placement plane 11 of the plate main body 10 is provided is preferably as thin as possible, and is several mm, e.g., 3 mm.
The opening 12 is a rectangular opening provided adjacent to the placement region where the placement plane 11 is provided, and is provided so as to pass completely through the plate main body 10. Fitted into the opening 12 is a frame body 13 in a shape conforming to the shape of the opening 12 (in this embodiment, a rectangular shape). A bag like a plastic bag for collecting wastes is attached to the frame body 13, and the frame body 13 in this condition is fitted into the opening 12, and thus the bag is placed on the plate 1, and the opening 12 serves as a waste catch. Although the shape of the opening 12 and that of the frame body 13 are rectangular, the present disclosure is not limited to any particular shape as long as it catches wastes.
The leg 20 is a support member for supporting the plate main body 10. The leg 20 is provided on the back surface of the placement region where the placement plane 11 of the plate main body 10 is provided, and is a thin support member that spreads over the back surface. The leg 20 spreads so as to cover substantially entire area of the back surface of the placement region. That is, the leg 20 includes a region surrounded by multiple legs of the sewing machine 30, and is provided on the back surface of the placement region. The surrounded region by the multiple legs of the sewing machine 30 is the maximum range of the region surrounded by the multiple legs of the sewing machine 30. When, for example, the number of legs of the sewing machine 30 is four, the region is a rectangular with each leg as a vertex.
The leg 20 is formed of a material which is softer than the material forming the plate main body 10, and which has an elasticity. It is preferable that the leg 20 should be formed of an elastic material that suppresses the vertical vibration of the sewing machine, i.e., the vibration in the forwarding and retracting direction of a needle provided with the sewing machine. In addition, it is preferable that the leg 20 should be formed of a material that suppresses a slippage of the plate 1 when the plate 1 is placed on a table. Example applicable elastic materials of the leg 20 having the vertical vibration and the slippage suppressing effects are butyl rubber, nitrile rubber, natural rubber, isoprene rubber, urethane rubber, silicone rubber, styrene-butadiene rubber, chloroprene rubber, acrylic rubber, sponge rubber, and vinyl chloride. When the leg 20 is formed of sponge rubber, it is preferable to adopt a sheet material having multiple small suction disks on a surface. For example, the leg 20 can be formed of an acrylic-urethane-rubber co-polymer foam sheet having an embossed surface. The concavities of the surface formed by the embossing work serve as suction disks to accomplish the slippage suppressing effect.
It is preferable that the thickness of the leg 20 should be equal to or smaller than 3 mm. In this embodiment, the leg 20 is formed of butyl rubber and the thickness is 1 mm.
As illustrated in
As illustrated in
A notch 121 is provided in a part of the projection 12a. The notch 121 may be provided anywhere as long as the location is a part of the projection 12a, but in this embodiment, the notch 121 is provided in a side in parallel with and closest to a side of the rectangular plate main body 10 where no bent portion 14 is provided.
The shape of the inner circumference of the opening 12 is formed so as to match the shape of the frame body 13, and after the frame body 13 is bent so as to be positioned under the restriction portion 12b and attached to the opening 12, the shape of the frame body 13 recovers to the original rectangular shape.
As illustrated in
In addition, as illustrated in
[1-2. Action]
The action of the waste catch plate for sewing machine according to this embodiment will be described. As illustrated in
Thus, the plate 1 can be placed in such a way that the placement plane 11 is positioned on the table 40, and the opening 12 protrudes from the table 40. Such an alignment prevents the legs of the sewing machine 30 from being detached from the table 40 and the plate i from becoming a vibration source. Consequently, an accident such that the sewing machine 30 falls down from the table 40 is preventable.
After the plate 1 is aligned on the table 40, the sewing machine is placed on the placement plane 11. Since the leg 20 is provided so as to cover substantially entire back surface of the region where the placement plane 11 is provided, no matter where the sewing machine is placed on the placement plane 11, the leg 20 is always located right below the legs of the sewing machine 30. Hence, unlike conventional technologies, cases in which the leg of the flat base is not located right below the legs of the sewing machine, causing a deflection of the plate part on which the sewing machine is placed, and an increase of the vibration in conjunction with the vertical vibration of the sewing machine can be avoidable.
As described above, since the leg 20 covers substantially entire back surface of the placement region, enabling a rough placement of the sewing machine 30, while the leg 20 spreads across the back surface of the placement region, the load will be applied anywhere in the leg 20. When the load of the sewing machine 30 is locally applied to any leg among the multiple legs of the sewing machine 30, and when the leg 20 is thick, a deflection of the leg 20 spreads from the portion where the load is locally applied to the surroundings, causing a vibration. Hence, it is preferable that the thickness of the leg 20 should be thin enough in comparison with the spreading width of the leg 20, and be equal to or smaller than 3 mm. In this embodiment, the leg 20 is formed of a material including butyl rubber that is an elastic material, and the thickness of the leg 20 is set to be 1 mm. This eliminates the necessity of precise alignment of the sewing machine 30 for placement, while at the same time, a disadvantage of the spreading leg 20 is eliminated.
Still further, although a rib may be formed by bending the circumference edge of the plate main body 10 downwardly toward the leg 20, since the leg 20 is thin, due to the vertical vibration, etc., of the sewing machine 30, the rib may contact the table 40, possibly becoming a vibration generation source. Hence, in this embodiment, the bent portion 14 is formed so as to stand upright from the placement plane 11 as the bottom.
When the plate 1 is placed on the table, the sewing machine may be aligned with the alignment portion 15. Since the leg 20 is formed of butyl rubber, nitrile rubber, natural rubber, isoprene rubber, urethane rubber, silicone rubber, styrene-butadiene rubber, chloroprene rubber, acrylic rubber, sponge rubber, and vinyl chloride, the leg 20 is not likely slip over the table, and a vibration due co the vertical vibration of the sewing machine can be suppressed by the elasticity of the rubber. Accordingly, the position of the plate 1 is easily fastened on the table, and an accident such that the plate 1 and the sewing machine fall down from the table due to vibration can be prevented. In addition, since the vibration is suppressed, it becomes easy for the user to see the hand location at which the sewing work is performed, facilitating the sewing work.
Since the restriction portion 12b is provided in the opening 12, when the frame body 13 is fitted into the opening 12, the parallel two sides of the frame body 13 are pinched or the frame body 13 is depressed from the upper space for deflation so as to fit the frame body 13 into the opening 12. After the frame body 13 is fitted in the opening 12, the frame body 13 returns to the original rectangular shape, and is supported by the projection 12a. In addition, since the frame body 13 is caught by the restriction portion 12b provided on the inner circumference of the opening 12, the frame body 13 is prevented from being detached from the opening 12 due to a vibration of the plate 1 and that of the sewing machine.
That is, according to conventional waste catch flat bases for sewing machine, the bag for collecting the wastes is attached to the flat base with the end of the bag being held between the inner circumference of the opening and the frame component. However, when the frame component fitted in the opening for collecting the wastes is displaced or detached due to the vertical vibration of the sewing machine, there is a possibility such that the bag falls down. In contrast, by employing the structure for suppressing the vibration regarding the leg 20 as described above, the displacement of the frame body 13 and the detachment thereof from the opening 12 can be suppressed. In addition, according to this embodiment, since the restriction portion 12b is provided, the frame body 13 is caught by the restriction portion 12b, and thus the frame body 13 is prevented from being detached and the bag is prevented from failing down.
When the frame body 13 is detached from the opening 12, the frame body 13 can be detached by pushing out the frame body 13 with a finger, etc., via the notch 121.
[1-3. Effect]
(1) The waste catch plate for sewing machine according to this embodiment is held between the sewing machine and the table, and catches the wastes produced by a sewing work by the sewing machine, and includes a plate main body 10 in a tabular shape. The plate main body 10 is provided with the placement plane 11 provided in a partial region of the plate main body 10 and on which the sewing machine is to he placed, and an opening provided in the remaining region of the plate main body 10 continuous and adjoining to the partial placement region, and to which a bag for collecting the wastes is attached. In addition, on the back surface of the region of the plate main body 10 where the placement plane is provided, the thin leg 20 spreading on the back surface is provided so as to cover the region surrounded by the plurality of legs of the sewing machine being placed on the placement plane 11.
This prevents the plate main body 10 from being deflected due to an inaccurate placement of the sewing machine because the leg 20 is located right below the legs of the sewing machine without precise alignment and placement of the sewing machine on the placement plane 11.
As described above, according to conventional technologies, it is necessary to place the sewing machine with the legs thereof being aligned with predetermined positions, but according to this embodiment, even if the sewing machine is roughly placed on the placement plane 11, the vertical vibration of the sewing machine and the increase thereof can be suppressed since the sewing machine is supported by the leg 20 that spreads over the back surface of the region of the placement plane 11, the hand location at which the sewing work is carried out is easily viewable, facilitating the sewing work. In addition, there is no restriction for the position where the sewing machine is placed as long as it is on the placement plane 11, the plate 1 is applicable even for sewing machines of different types having different leg positions.
(2) The leg 20 is formed of an elastic material, and the thickness of the leg 20 is equal to or smaller than 3 mm. This suppresses a vibration of the plate main body 10 and that of the sewing machine. That is, when the thickness of the leg 20 exceeds 3 mm, the repulsive force of the leg 20 increases by what corresponds to the thickness of the leg 20, and thus the vertical vibration of the sewing machine is increased and the vibration suppression effect is not obtainable, but by setting the thickness of the leg 20 to be equal to or smaller than 3 mm, the vertical vibration of the sewing machine is absorbed, and the vibration suppress ton effect is obtainable. In addition, even if a local load is applied to the leg 20, it is possible to avoid an occasion such that a deflection of the leg 20 propagates around the location where the local load is applied, and such a location become a vibration source.
(3) The leg 20 is formed of a material that contains butyl rubber, nitrile rubber, natural rubber, isoprene rubber, urethane rubber, silicone rubber, styrene-butadiene rubber, chloroprene rubber, acrylic rubber, sponge rubber or vinyl chloride. Consequently, the vibration suppression effect and the position fastening effect for the plate 1 on the table are obtainable. That is, these materials are relatively hard type among the elastic materials, and even if the sewing machine causes vertical vibration, the vibration is not increased by the repulsive force of such a material, and the vibration is likely to be absorbed. In addition, since those materials have high frictional force relative to the table, the plate 1 is prevented from being displaced on the table due to vibration of the sewing machine, and thus the position of the plate 1 is fastened stationary. Hence, a synergistic effect by vibration suppression with position fastening can be obtained.
(4) The bent portion 14 standing upright from the placement plane 11 as the bottom is provided along the circumference of the plate main body 10. This enhances the stiffness of the plate main body 10, increasing the strength of the plate main body 10 and making the plate main body 10 not easily deflected. Consequently, a vibration of the plate main body 10 due to the vibration of the sewing machine is suppressed. In particular, when the plate main body 10 is integrally molded by resin, there is a possibility such that the plate body 10 is warped when the resin filled in a die is cured, but such a technical problem is addressed. This enables an application of the plate 1 with a usability similar to the table by reducing the thickness of the plate main body 10, in particular, the thickness of the placement region.
(5) The frame body 13 to be fitted in the opening 12 and for attaching a bag collecting the wastes to the opening 12 is provided, and the restriction portion 12b protruding inwardly in the opening 12 so as to contact the frame body 13 is provided on the inner circumference of the opening 12.
Accordingly, even if the plate 1 is vibrated by the sewing machine, the frame body 13 fitted in the opening 12 is caught by the restriction portion 12b, preventing the frame body 13 from being detached from the opening 12. That is, in the case of conventional waste catch flat bases for sewing machine, vibration increases due to the deflection of the flat base originating from an inaccurate placement of the sewing machine, the frame component fitted in the opening is detached, and consequently, the bag for collecting the wastes is detached. The present disclosure can address such a technical problem.
In addition, according to conventional waste catch flat bases for sewing machine, the rectangular frame component is held by the frictional force with the inner circumference of the opening for catching wastes. That is, a protrusion is provided on the outer circumference of the frame component facing the inner circumference of the opening for catching wastes, and the frame component is held by the protrusion in contact with the inner circumference of the opening. At that time, in order to increase the frictional force, the frame component is attached to the opening in a condition curved inwardly, and the recovering force acts as counterforce against the inner circumference of the opening. However, the frame component formed of resin and attached to the opening always has stress applied thereto, causing a creep deformation and the curved shape does not recover to the original rectangular shape. Consequently, the recovery force for pressing the protrusion against the inner circumference of the opening remarkably decreases, and the frame component cannot be held at the opening by frictional force or even if the frame component can be held, the frame component is detached by slight vibration. In addition, since the frame component is attached in a deformed condition, the appearance is not suitable.
In contrast, in this embodiment, since the restriction portion 12b is provided on the inner circumference of the opening 12, stress that causes the frame body 13 to be curved is applied only at the time of attachment or detachment of the frame body 13, and thus no creep deformation occurs. In addition, after being attached, the frame body 13 recovers to the original shape, and thus the aesthetic appearance is maintainable.
(6) The shape of the frame body 13 is symmetrical in the vertical, horizontal, and back-and-forth directions. Accordingly, since the frame body 13 is symmetrical n any directions, a mistake in direction of the frame body 13 to be attached to the opening 12 is eliminatable. That is, the method of attaching the bag for collecting the wastes is often confusable for the user, and since conventional frame components are, for example, asymmetrical in the vertical direction, when the vertical direction is incorrect, the frame component cannot be attached and the user needs to start over the installation of the bag, which is burdensome for the user as well as burdensome on psychological reasons.
In contrast, according to this embodiment, the user can attach the bag without paying attention to the direction of the frame body 13, a work and a psychological burden can be eliminated, and thus a user-friendly product can be provided.
(7) On the bottom, of the inner circumference of the opening 12, the projection 12a protruding inwardly in the opening 12, and supporting the frame body 13 fitted in the opening 12 is provided. Consequently, unlike the conventional technologies, there is no need to hold the frame component by the frictional force depending on the deformation of the frame component, there is no possibility such that the frame body 13 falls due to the decrease in the frictional force.
(8) The projection 12a is provided circularly on the inner circumference of the opening 12, and the notch 121 is provided at a part of the projection 12a. Consequently, the frame body 13 can be easily removed from the opening 12. More specifically, by pushing up the frame body 13 with a finger, etc., via the notch 121, the frame body 13 deforms along the contour of the restriction portion 12b while abutting therewith, so that it can be removed easily.
(9) The protrusion 21 protruding more than the leg 20 is provided on the back surface of the region including the opening 12 of the plate main body 10, and the edge of the protrusion 21, the edge facing the leg 20 is an abutment 21a to be in contact with the edge of the table 40.
Consequently, it is easy to align the plate 1 on the table 40. That is, according to conventional waste catch flat bases for sewing machine, the alignment marking provided on the surface of the flat bases is aligned with the edge of the table, etc., by visual check, but may be displaced when the sewing machine is placed on the flat base, or by vibration of the sewing machine. Conversely, according to this embodiment, it is possible to align the placement plane 11 on the table 40 by simply causing the abutment 21a to abut the edge of the table 40, and thus a positioning can be easily carried out based on a feeling of contact regardless of visual check.
Regardless of where the sewing machine is placed, as long as it is on the placement plane 11, the sewing machine can be supported by the leg 20, but even if the sewing machine is displaced and placed again on the placement plane 11, the plate 1 is prevented from going over the table 10 including the waste catch region. Hence, it is not necessary to position the plate 1 again.
The present disclosure is not limited to the foregoing embodiment, and covers the following other embodiments. In addition, the present disclosure also covers a form in which the first embodiment is combined with one of or all of the following other embodiments. Still further, various omissions, replacements, and modifications can he made to the embodiments without departing from the scope of the present disclosure, and the modified forms thereof are also within the scope of the present disclosure.
(1) In the above embodiment, the plate main body 10 is formed of resin, but may be formed of other materials. For example, in order to suppress a deflection of the plate 1 due to the vibration of the sewing machine, it is appropriate if the stiffness of the plate main body 10 itself is increased, and in order to do so, the plate main body 10 may be formed of highly rigid carbon fiber reinforced plastic, iron, steel, etc.
(2) In the above embodiment, the leg 20 is formed in a thin film shape, but the leg 20 may be in the form of a suction disk. Accordingly, the plate 1 sticks to the table, the stiffness of the table can be adopted as a part of the stiffness of the plate 1. Consequently, a deflection of the plate 1 can be suppressed.
(3) In the above embodiment, the projection 12a is circularly provided on the inner circumference of the opening 12, and the notch 121 is provided in the center portion of a side of the rectangle. However, the projection 12a may be formed on a pair of two parallel sides of the rectangular opening 12, and no projection may be formed on the other two parallel sides. In this case, the two sides where no projection 12a is provided may be utilized as the notch 121.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2016-232160 | Nov 2016 | JP | national |
