JPH026938Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an auxiliary bed for an overedge sewing machine that expands the area of the sewing machine's cloth table and stabilizes the support of the fabric to be sewn.

[Prior Art] As a technology related to a conventional auxiliary table for a sewing machine, there is, for example, Japanese Utility Model Publication No. 60-26791. In this method, the auxiliary bed of the sewing machine was attached to the free arm of the sewing machine when sewing, and was removed from the sewing machine when not sewing.

[Problems to be Solved by the Invention] However, such a removable device is inconvenient for the user to handle.

This idea attaches the auxiliary bed of the sewing machine to the sewing machine's cloth stand, securely fixes it at the same height as the cloth stand when the auxiliary bed is in use, and retracts it downwards when not in use for convenient storage. It does not move freely due to the vibrations of the sewing machine in any position, and when opening and closing the cloth bed for threading the looper in an overlock sewing machine or for thread cutting during sewing, the bed can be placed in the horizontal position or in the downward position. To provide an auxiliary bed for an edge sewing machine which can be easily used without any trouble in any of the following cases.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a cloth stand of an overlock sewing machine, and the front side thereof is arranged so as to be rotatable to the left by means of a vertical hinge (not shown) provided at the rear side.

The upper surface is used to place a workpiece and support the workpiece to be sewn and fed by the sewing machine sewing section. Reference numeral 2 denotes a bed attached to the left side of the cloth table 1 of the sewing machine, and the hinge 4 of the base plate 3 placed front and back on the back of the bed is connected to the hinge 6 of the support plate 5 attached to the cloth table 1, and the sewing machine is It is rotatably pivoted about an axis parallel to the cloth feeding direction, with the top surface at a horizontal position at the same height as the cloth table and the top surface at a lower position along the side surface of the cloth table. This bed 2 expands the support area by adding the upper surface of the cloth stand 1 and the upper surface of the bed.When the workpiece has a relatively large area, the support area of the workpiece is supported by the cloth as it is transported. It cooperates with the stand 1 to provide stable support. For this reason, this bed 2 has an area necessary for cloth feeding to the left from the needle drop point and to the front and back.

Reference numeral 7 denotes a support arm formed in a substantially U-shape, and a bracket 8 with one end disposed on the operator side of the support plate 5.
(first support part) so as to be rotatable around an axis parallel to the rotation axis of the bed 2, and the other end extends toward the distal end from an intermediate locking part 9 in which a retaining ring is fitted in the intermediate part. It is formed in a large diameter portion 10, a stepped portion 11, and a narrow diameter portion 12. This stepped portion 11 is formed in a sloped surface from the large diameter portion 10 to the small diameter portion 12.

Reference numeral 13 denotes a slit piece (second support part) raised from the operator's side of the base plate 3, and a slit 14 having approximately the same width as the narrow diameter part 12 of the support arm 7 is formed in a direction perpendicular to the axis of the bed. , and this slit 14
A support hole 15 (locking portion) having approximately the same diameter as the large diameter portion 10 of the support arm 7 is bored at the cloth stand side end of the support arm 7 . The tip of the support arm 7 is inserted into the slit 14 from the intermediate locking portion 9, and slides as the bed 2 rotates. A bracket 8 formed on the support plate 5 and a retaining ring 1 provided at the tip of the other end 7a of the support arm.
A spring 17 is interposed between the support arm 6 and the support arm 6, and the elastic force of the spring 17 biases the tip of the support arm from the intermediate locking portion 9 to fit into the slit 14.

Note that 18 is a screw fixed to the side surface of the cloth stand of the support plate 5, and 19 is a retaining ring fitted to the tip of the narrow diameter portion 12 of the support arm 7 and having a diameter at least larger than the support hole 15 of the slit 14.

The operation of a sewing machine having such a configuration with an auxiliary bed will be explained.

When the bed 2 is in the lower or intermediate position, the stepped portion 11 of the support arm 7 is pressed against the slit 14 by elastic force. Since the inclined surface of the stepped portion 11 is tightly fitted into the slit 14, even if the sewing machine is driven using only the sewing machine cloth table with the bed 2 in the downward position, the bed 2 will not vibrate or move loosely. .

Next, when the bed 2 is raised from the lower position, the stepped portion 11 comes into pressure contact with the slit 14 and the narrow diameter portion 12 slides on the slit, so that the bed can be moved smoothly.

Further, when the bed is placed in a horizontal position, the large diameter portion 10 is fitted into the support hole 15 by the elastic force of the spring 17, and the locking portion 9 is pressed against the slit piece 13 by the elastic force. Since the support arm 8 and the slit piece 13 are pressed together without loosening by the spring 17, even if downward pressing force is applied to the bed 2, it can be firmly received without coming off.

To lower the bed from the horizontal position, the operator pulls the support arm 7 toward the user against the bias of the spring 17 to disengage the large diameter portion 10, and then inserts the support arm 7 into the slit 13. The bed can be lowered by moving to the left so as to fit the narrow diameter portion 12.

[Other Embodiments] In the above embodiment, the bracket 8 for supporting the support arm 7 was provided on the cloth table 1, but this was placed on the bed 2 together with the spring 17, and the slit piece 13 was attached to the cloth table 1.
It may be placed in

[Effects of the invention] The present invention has the above-mentioned configuration and function, and by providing a bed on the left side of the cloth table at the same height as the cloth table, it is possible to sew items that cover a wide area. The fabric can be stably supported while being fed by the sewing machine.

Furthermore, this bed can be moved between a horizontal position when used as a cloth stand and a downward position when not in use, making it convenient for storage, etc.

In addition, since the sewing machine is directly supported on the cloth stand, there is no problem with internal adjustment work such as threading of the looper before and after sewing due to the leftward rotation of the conventional cloth stand.

[Brief explanation of drawings]

FIG. 1 is a front view showing the bed in a horizontal position relative to the cloth table, FIG. 2 is a front view showing the bed in the downward position, and FIG. 3 is a back view of the bed. 2...Bed, 5...Support plate, 7...Support arm,
13...Slit piece (part), 14...Slit,
17...Spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A support plate 5 provided on the left side of the cloth stand 1 and having a hinge 6 on the upper part; A bed 2 is provided with a hinge 4 which is rotatably attached to the hinge 6 in a horizontal position at approximately the same height as that of the bed 2, and in a downward position where the upper surface is along the side surface of the table bed; It is supported between the support part 8 and a second support part 13 provided on the underside of the bed and is always placed outward from the cloth base, one end is rotatably attached to one of the support parts 8 and 13, and the other end is is slidably inserted into the slit 14 provided in the other support portions 13 and 8, and the locking portion 1 is inserted when the bed is in a horizontal position.
5, and the support arm 7 is connected to the first support part 8 and the second support part 13.
An auxiliary bed for a sewing machine, comprising a spring 17 arranged so as to come into pressure contact with the auxiliary bed of a sewing machine.