JPH02140190A - Bed slide regulating device for sewing machine - Google Patents

Abstract

PURPOSE:To hide a bed slide regulating device from the surface of a bed slide by forming a recessed part in one sliding and contacting surface between the bed slide and a guide and arranging an elastic body to regulate the free motion of the bed slide in front of the recessed part. CONSTITUTION:On one inclined surface 5 of a bed slide 3 in the bed slide regulating device of a sewing machine, a recessed part 12 is formed in a transverse direction in the central part of the thickness range for the bed slide. A longitudinal hole 13 is bore to pass through a back surface 8 in the central part of the bottom surface in the recessed part. A notch part 15 to pass from the longitudinal hole 13 to the inclined surface 5 is provided in one edge of an edge part 14 (elastic body) positioned in the inclined surface 5 side of the length-wise hole 13. The recessed part 12 and longitudinal hole 13 are formed in a poppet shape and they are not exposed on a surface 7 of a bed slide 3. Then, there is no dust to be stuck to the surface of the bed slide and the removing work of the dust is eliminated. Since the return stop adjustment of the bed slide 3 and the bending work of the edge part 14 in an arrow B direction are executed from the back surface 8 side with detaching the bed slide 3 from a bed 1, the surface of the bed slide is not damaged and beautiful appearance can be kept.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a sliding plate that releasably covers a bobbin storage opening formed in the bed of a sewing machine, and particularly to a sliding plate that prevents displacement of the sliding plate after installation. This invention relates to an improvement in a regulating device that prevents the above.

[Prior Art] Figs. 8 to 10 show a conventional sliding plate regulating device of this type of sewing machine, which is disclosed in, for example, Japanese Utility Model Application Publication No. 60-33985. In the figure, (1) is the bed of the sewing machine, (2) is the bobbin storage opening (hereinafter simply referred to as the opening) formed in the bed (1), and (3) is the opening (
2) is a sliding plate that releasably covers the opening (2), and on both sides thereof there are guide surfaces formed on both side edges of the opening (2), that is, slopes that are slidably guided by engaging with the dovetail grooves (4). (5)
, (B) are provided.

In addition, the sliding plate (3) has a vertical hole (9) penetrating between the front surface (7) and the back surface (8) formed on one slope (5) side thereof, and the slope of this vertical hole (9). A notch (11) is provided at one end of the edge (10) located on the (5) side, which extends from the vertical hole (9) to the slope (5).

In such a sewing machine, the sewing operation is normally performed with the opening (2) closed by the sliding plate (8).
The object to be sewn is prevented from falling. Also,
When taking out a bobbin (not shown), slide the sliding plate (3) along the dovetail groove (4) or pull it out from the dovetail groove (4) to open the opening (2). Work is being carried out in this state.

By the way, the sewing machine is equipped with a sliding plate regulating device to prevent the sliding plate (3) from moving due to vibrations generated from a link mechanism or the like or contact with an object to be sewn during the sewing operation described above. This sliding plate regulating device consists of the above-mentioned vertical hole (9) and an edge (10) arranged in front of this vertical hole.
10) by slightly bending it in the direction of arrow A (FIG. 10). That is, the end of the edge (10) on the notch (11) side protrudes from the slope (5) by the above-mentioned bending process, and this protrusion comes into pressure contact with the dovetail groove (4) when the sliding plate is inserted, and the dovetail groove ( In addition to increasing the frictional force between the sliding plate (3) and the dovetail groove (4), the elastic force of the edge (lO) makes it possible to press and hold the sliding plate (3) in the dovetail groove (4).

[Problems to be Solved by the Invention] However, the sliding plate regulating device does not cover the surface of the sliding plate (3) (
In the conventional device where the vertical hole (9) is exposed, dust accumulates inside the vertical hole (9), which is troublesome to remove, and when the edge (10) is bent, the vertical hole (9) ) The periphery of the vertical hole (9) is scratched by a metal fitting such as a screwdriver inserted into the vertical hole (9), which makes it easier for dirt to adhere to it and impairs its aesthetic appearance.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a sliding plate regulating device for a sewing machine that can hide the sliding plate regulating device from the surface of the sliding plate.

[Means for Solving the Problems] A sliding plate regulating device for a sewing machine according to the present invention is applied to a sewing machine spatula. a sliding plate that engages with and is slidably guided by guide surfaces on both sides of a bobbin storage opening formed in the guide, and covers the opening in an openable manner; A recess is formed in the center or lower part of the sliding plate on one side within the thickness range, and an elastic body is arranged on the front surface of this recess to press against the sliding surface of the other side and restrict the free movement of the sliding plate. .

[Operation] In the present invention, a recessed portion for absorbing inward deflection of the elastic body is set at the center or lower part within the thickness range of the sliding plate on either one of the sliding contact surfaces between the sliding plate and the guide. Therefore, the sliding board regulating device is not exposed on the sliding board surface, there is no risk of scratching the sliding board surface, and the beauty of the sliding board can be maintained by eliminating the adhesion of dirt.

[Examples] The present invention will be explained below with reference to illustrated examples. 1 to 3 show a sliding plate regulating device for a sewing machine according to a first embodiment of the present invention, and parts that are the same as those in the prior art are designated by the same reference numerals and their explanations will be omitted.

On one slope (5) of the sliding plate (3) according to this embodiment,
Four horizontal parts (12) are formed in the central part within the thickness range of the sliding plate, and a back surface (8) is formed in the inner bottom of this recess and in the central part of the surface.
A vertical hole (13) penetrating through the vertical hole (13) is bored at one end of the edge (14) located on the slope (5) side of the vertical hole (13). Notch to come out (1
5) is provided. The configuration other than the above is the same as the conventional one, so a description thereof will be omitted.

In the device of this embodiment having the above configuration, the recess (12) and the vertical hole (13) are formed in a poppet shape when viewed in cross section in FIG. 2, and these are not exposed on the surface (7) of the sliding plate (3). First, there is no longer any dust adhering to the surface of the sliding plate, making removal work unnecessary.

Also, the detent adjustment of the sliding plate (3), that is, the edge (14)
) in the direction of arrow B (Fig. 3), use the sliding plate (8
) is removed from the bed (1) and done from the back side (8), so there is no risk of scratching the surface of the sliding board and the aesthetic appearance can be maintained.

FIG. 4 shows a sliding plate regulating device for a sewing machine according to a second embodiment of the present invention. This example has a vertical hole (
No cutout is formed in the edge (14) located on the slope (5) side of the slope (13), and the central part of the edge (14) is directly pushed out in the direction of arrow C to form a protrusion () on the slope (5) side. 16) is formed, and the protrusion (16) has a function of preventing the sliding plate (3) from returning, which is different from that of the first embodiment described above.

This embodiment has the advantage that the edge (14) can be made stronger, increasing its durability.

5 and 6 show a sliding plate regulating device for a sewing machine according to a third embodiment of the present invention. In this example, a dovetail groove-shaped recess (17) is carved in the vertical direction on the slope (5) at the center of the slide plate thickness range on one slope (5) of the slide plate (3), Inside this four part (17) is a leaf spring (
18) is attached by bending it outward.

In this embodiment, there is a leaf spring (18) that can be deformed freely when pressed into the groove, so that the sliding plate (3) can be smoothly attached and removed, and the pressure part (leaf spring)
It is possible to exchange only.

FIG. 7 shows a sliding plate regulating device for a sewing machine according to a fourth embodiment of the present invention. In this example, the guide surfaces formed on both sides of the opening of the bed (1) are formed into concave grooves (
19), and these concave grooves (19) are provided on both sides of the sliding plate (3).
) and are slidably guided by engaging with the protrusions (20) and (21
), and the dovetail groove-shaped recess 22) and the leaf spring (28) are arranged at a lower position than the protruding strip (20) on the side of the sliding plate on one protruding strip (20) side, as mentioned above. This is different from that of the third embodiment.

This embodiment also provides the same effects as those of the third embodiment.

In each of the above-mentioned embodiments, the sliding plate regulating device is provided only on the negative side of the sliding plate (3), but even if it is installed on both sides, Needless to say, it may be placed.

[Effects of the Invention] As described above, according to the present invention, the four parts for absorbing the inward deflection of the elastic body are formed by adjusting the thickness of the sliding plate at either one of the sliding surfaces of the sliding plate and the guide. Since the sliding plate regulating device is set at the center or bottom of the area and is hidden by the sliding plate surface, there is no risk of scratching the sliding plate surface, and there is no dust attached to the sliding plate. It has the effect of maintaining a beautiful appearance.

[Brief explanation of the drawing]

1 to 3 all show a sliding plate regulating device for a sewing machine according to a first embodiment of the present invention. FIG. 1 is a plan view, and FIG. 3 is a cross-sectional view taken along the line ■-■ of FIG. 2; FIG. 4 is a third cross-sectional view taken along the line ■-■ of FIG. 2;
The corresponding figures, FIGS. 5 and 6, all show a sliding plate regulating device for a sewing machine according to a third embodiment of the present invention.
The figure is a perspective view, FIG. 6 is a view equivalent to FIG. 3, FIG. 7 is a view equivalent to FIG. Both show the sliding plate regulating device of a conventional sewing machine; Figure 8 is a diagram equivalent to Figure 1;
Figure 9 is a cross-sectional view taken along the line IX-IX in Figure 8;
FIG. 0 is a plan view showing an enlarged main part of FIG. 8. (1): Bed, (2) Nibobin storage opening, (3): Sliding plate, (4): Dovetail groove (guide surface), (5), (6): Slope (sliding surface), (12 ): Horizontal recess, (13): Vertical hole, (14): Edge (elastic body), (17), (22): Dovetail groove recess, (18),
(23): Leaf spring (elastic body), (19): Concave groove (guide surface), (20), (21): Convex strip (sliding surface), In addition, the same reference numerals in the figures are the same or equivalent. Show parts.

Claims (1)

[Claims] A sliding plate is provided which engages and is slidably guided by guide surfaces on both sides of a bobbin storage opening formed in the bed of the sewing machine, and covers the opening in an openable manner. A recess is formed in the center or lower part of one of the sliding plates within the thickness range, and an elastic body is arranged on the front surface of this recess to press against the sliding surface of the other side and restrict the free movement of the sliding plate. A sewing machine sliding plate regulating device featuring: