JPH08188956A - Apparatus for installing embroidery frame - Google Patents

Abstract

PURPOSE: To provide an apparatus for installing an embroidery frame capable of readily fitting the embroidery frame into an installing hole without applying an excessive force and easily taking out the embroidery frame from the installing hole by one-touch operation. CONSTITUTION: This apparatus 20 for installing an embroidery frame is obtained by forming three installing holes 25 having different sizes in the apparatus body 21 made of a resin therein, detachably fitting the embroidery frame 1 into the installing hole 25 fit for the size thereof, installing the embroidery frame 1 therein, forming two protruding part escape recessed parts 26 for making protruding parts 7 for fixing installation tools escape at prescribed positions separated by 180 deg. of the inner periphery of each installing hole 25, forming the recessed parts 26 of a slightly smaller width of the protruding parts 7 and a depth greater than the protrusion extent of the protruding parts 7 by at least a dimension capable of admitting a human finger thereinto, further forming slitlike notches 28 at sites slightly separated from both ends of the respective protruding part escape recessed parts 26 and thereby providing a pair of cantilever arms 29 comprising a resin as elastic nipping parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching an embroidery frame which is used for holding and stretching cloth in an embroidery sewing machine.

[0002]

2. Description of the Related Art FIG. 9 shows the most common embroidery frame 1 and its usage. The embroidery frame 1 is composed of an inner frame 2 and an outer frame 3 fitted to the outer periphery thereof, and a cloth 4 is sandwiched between the inner frame 2 and the outer frame 3 and stretched in the inner frame 2. The inner frame 2 and the outer frame 3 are generally made of resin or wood. One portion of the outer frame 3 is cut off, and screwing projections 5 are integrally formed on both of the cut ends, and expansion / contraction adjusting screws 6 are screwed on the screwing projections 5. As shown in FIGS. 10 and 11, the expansion / contraction adjusting screw 6 is used to change the distance between the screw-engaging projections 5 so that the inner and outer diameters of the outer frame 3 can be adjusted to an appropriate size according to the thickness of the fabric 4. It can be adjusted. In addition, mounting fixture fixing projections 7 are formed to project at two positions on the outer periphery of the outer frame 3 that are separated by 180 degrees, and the mounting fixtures 9 fixed to both the mounting fixture fixing projections 7 with screws 8 or the like are attached to the embroidery sewing machine. The drive frame 10 provided on the table (not shown) is attached with screws 11 or the like.

Generally, the embroidery frame 1 is made large so that it can be used when the embroidery range of the cloth 4 is large or small. However, when the embroidery frame 1 is large, the spreading range of the cloth 4 is also large. The stretch tension of the fabric 4 reduces the tension, which may cause the fabric 4 to sag or flap.

Therefore, an embroidery frame mounting device 50 as shown in FIGS. 12 and 13 has been developed so that the embroidery frame 1 having an appropriate size according to the size of the embroidery range of the cloth 4 can be used. The embroidery frame attachment device 50 is a device main body 51 made of wood board.
And a fixture 53 fixed to both ends of the apparatus main body 51 with screws 52 or the like, and attached to the drive frame 10 with screws 54 or the like. The device main body 51 is formed with three mounting holes 55 having different inner diameters such as large, medium, and small so as to be arranged in a straight line, and the embroidery frame 1 having an appropriate size can be mounted according to the size. The holes 55 are detachably fitted and attached.

At this time, the fixture 9 is removed from the fixture fixing projection 7. Then, on the inner circumference of each mounting hole 55, two convex relief recesses 56 for escaping the fixture fixing convex portion 7 and one adjusting portion for escaping the screwing protrusion 5 and the expansion / contraction adjusting screw 6. An escape recess 57 is formed. In particular, the two protrusion relief recesses 56 are formed at fixed positions 180 degrees apart, and have a minimum width and depth such that the fixture fixing protrusions 7 fit tightly together. Therefore, the fixture fixing convex portion 7 is press-fitted into the convex portion relief concave portion 56, and the embroidery frame 1 is held by the natural pressing force generated between the two by the fitting.

[0006]

In the embroidery frame attachment device 50 described above, as shown in FIG. 10, a thin cloth 4 is spread on the embroidery frame 1 and the outer frame 3 is reduced in diameter by the expansion / contraction adjusting screw 6. In this case, the relative position of the two mounting fixture fixing protrusions 7 is 18
The angle is 0 °, and the two convex portion relief concave portions 56 are fitted well. Therefore, as shown in FIG.
When the thick cloth 4 is stretched on the embroidery frame 1 and the outer frame 3 is expanded by the expansion / contraction adjusting screw 6, the two fixing parts 7 for fixing the fixture are fixed.
Since the relative position of is shifted from 180 degrees, it becomes difficult for one of the fixture fixing projections 7 to fit into the projection relief recess 56,
There is a problem that if they are not force-fitted, they will not fit, or that the wood or resin at the contact portion between the fixture fixing convex portion 7 and the convex portion relief concave portion 56 will be gradually shaved and damaged.

Further, in the embroidery frame mounting device 50 described above, since there is almost no gap between the mounting hole 55 and the embroidery frame 1 fitted therein, when removing the embroidery frame 1 from the mounting hole 55, embroidery is performed. It was necessary to pick up some two parts of the frame 1 with fingers and pull it up vertically correctly, which was a troublesome work.

In the embroidery frame mounting device 50, the embroidery frame 1 is fitted and mounted in any of the three mounting holes 55 arranged in a straight line, and the drive frame 10 is moved in the linear direction.
Is displaced so that a certain point of the cloth 4 stretched on the embroidery frame 1 is aligned with the needle drop point of the embroidery sewing machine. Therefore, the embroidery frame attachment device 50 needs to be attached accurately so as not to tilt with respect to the drive frame 10. However, since the embroidery frame attachment device 50 described above does not have auxiliary means for accurately attaching the embroidery frame attachment device 50, the embroidery frame attachment device 50 may be attached at an angle to the drive frame 10 and may not be aligned with the needle drop point.

The object of the present invention is to solve the above-mentioned problems, and regardless of the thickness of the fabric stretched on the embroidery frame, the embroidery frame can be easily applied without applying an excessive force to the mounting hole and without damaging each part. (EN) Provided is an embroidery frame attachment device which can be fitted into and attached to an embroidery frame and which can easily remove the embroidery frame from the attachment hole with one touch.

[0010]

In order to achieve the above object, according to the present invention, a mounting hole for removably mounting an embroidery frame is formed in an apparatus main body, and an outer circumference of the embroidery frame is formed on an inner circumference of the mounting hole. In an embroidery frame attachment device in which an escape recess is formed to escape the fixture fixing protrusion that is formed on the upper side, the relief recess is formed deeper than the protrusion of the fixture fixing protrusion by at least the amount of a human finger. In addition, it is characterized in that an elastic holding portion for holding the fixture fixing convex portion by an elastic force is provided in the relief concave portion.

Here, as the elastic holding portion, a pair of cantilever arms made of resin can be exemplified, and the pair of cantilever arms are constricted at their free ends so that the distance between them is slightly narrowed. Is preferred. Moreover, a pair of leaf springs made of metal can be exemplified as another elastic holding portion.

The small range main part including the escape recess and the elastic clamping part and the apparatus main body other than the small range main part can be integrally formed, or can be separately formed to attach and detach the small range main part to the apparatus main body. It can be attached as much as possible.

It is preferable that the small area main part is made of a resin having high wear resistance and relatively easily elastically deformed, and the main body of the apparatus is made of a resin relatively hard to elastically deform. In the case of the integral formation, two-color molding is used.

Further, when a plurality of mounting holes having different inner diameters are formed in a straight line in the apparatus body, a plurality of needle drop marks spaced in the linear direction may be provided on the upper surface of the apparatus body. preferable.

[0015]

In the embroidery frame attachment device of the present invention, the relief concave portion formed in the inner periphery of the attachment hole of the apparatus main body is provided with the elastic clamping portion for clamping the fixture fixing convex portion with the elastic force. Therefore,
When thin cloth is stretched on the embroidery frame and the outer frame is reduced in diameter,
Even when the outer frame is expanded by spreading a thick cloth on the embroidery frame, even if the relative positions of the multiple fixture fixing projections are misaligned, the elastic clamping part absorbs the deviation and fixes the fixture. Since the use convex portion is sandwiched by the elastic force, the embroidery frame can be easily fitted and attached without applying excessive force to the attachment hole and without damaging each portion.

Further, in the embroidery frame attachment device of the present invention, the relief recess is formed deeper than the protrusion of the fixture fixing protrusion by at least the amount of a human finger. Therefore, when removing the embroidery frame from the mounting hole, it is sufficient to put a finger in the relief recess, hook the finger on the mounting fixture fixing protrusion, and pull up roughly, and it can be easily removed with one touch.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an embroidery frame attachment device embodying the present invention will be described below with reference to FIGS.
The embroidery frame attachment device 20 of this embodiment includes a device main body 21 made of a resin plate, and an attachment 23 fixed to both ends of the device main body 21 with screws 22 or the like is attached to the drive frame 10 with screws 24 or the like. Has become. This device body 21 has a large inner diameter,
Since three mounting holes 25 different from medium and small are arranged in a straight line, the embroidery frame 1 having an appropriate size is detachably fitted into the mounting hole 25 corresponding to the size and is mounted. is there. The structure of the embroidery frame 1 is as shown in FIGS. 9 to 11.

At this time, the fixture 9 of the embroidery frame 1 is removed from the fixture fixing projection 7. Then, on the inner periphery of each mounting hole 25, two convex relief grooves 26 for escaping the fixture fixing convex portion 7 and one adjusting portion for escaping the screw protrusion 5 and the expansion / contraction adjusting screw 6. An escape recess 27 is formed.

The two protrusion relief recesses 26 are located at a fixed position 180 degrees apart, and have a width slightly smaller than the width of the fixture fixing protrusion 7 and at least a finger of the person more than the protrusion amount of the fixture fixing protrusion 7. It is formed with a depth as deep as it can fit (10 to 30 mm). Further, by forming slit-like notches 28 at positions slightly apart from both side portions of each convex portion relief concave portion 26, a pair of cantilever arms 29 made of resin as elastic holding portions are provided on both side portions. There is. The pair of cantilevered arms 29 are narrowed at their free ends so that the distance between them is slightly narrowed, and the distance is the width of the convex relief recess 26.

Therefore, as shown in FIG. 2, the fixture fixing convex portion 7 is fitted into the convex portion relief concave portion 26 so as to elastically spread the pair of cantilever arms 29, and the cantilever arm 29 is The embroidery frame 1 is held by sandwiching the fixture fixing convex portion 7 with an elastic force.

The convex relief recess 26 and the cantilever arm 2 are provided.
The small range main part 30 including 9 (the range indicated by the chain double-dashed line in FIG. 1) is made of a resin having high wear resistance and relatively easily elastically deformed. Both members 30 and 21 are integrally formed by two-color molding using a resin that is inexpensive and relatively less elastically deformable. Therefore, while securing the elastic force by the cantilever arm 29 and preventing the damage due to the scraping of the convex portion escape concave portion 26, the device main body 2
It is possible to secure the rigidity of No. 1 and reduce the cost at the same time.

Further, on the upper surface of the apparatus main body 21, between the mounting hole 25 having a large inner diameter and the mounting hole 25 having a medium inner diameter, and between the mounting hole 25 having a medium inner diameter and the mounting hole 25 having a small inner diameter. V-grooves 31 are provided between them as marks for needle drop, and both V-grooves 31 are separated in the linear direction in which the three mounting holes 25 are arranged. Therefore, when the embroidery frame attachment device 20 is attached to the drive frame 10, the drive frame 10 is displaced in the linear direction,
Drop the needle (not shown) of the embroidery sewing machine into both V grooves 31 in order.
It is possible to know whether or not the embroidery frame attachment device 20 is tilted with respect to the drive frame 10 by checking whether or not the embroidery frame attachment device 20 is in alignment with the bottoms of the two V-shaped grooves 31.
0 can be attached accurately.

According to the embroidery frame attachment device 20 of the present embodiment configured as described above, as shown in FIG.
When the outer frame 3 is reduced in diameter by spreading the thin fabric 4 on it, and when the outer frame 3 is expanded in diameter by spreading the thick fabric 4 on the embroidery frame 1 as shown in FIG. Convex part 7 for fixing one fixture
2, the pair of cantilevered arms 29 in the two projection relief recesses 26 absorbs the deviation and the two fixture fixing projections 7 as shown in FIG.
Since it is sandwiched by the elastic force, the embroidery frame 1 can be easily fitted and attached to the attachment hole 25 without applying an excessive force and without damaging each part. Further, since the pair of cantilevered arms 29 are narrowed at the free ends of the two so that the distance between them is slightly narrowed, even if the free ends of the pair of cantilevered arms 29 are elastically pushed apart by the fixture 7 for fixing the fixture, the free ends of the pair of cantilevered arms 29 are shaped like a letter. Difficult to open,
The fixture fixing convex portion 7 can be reliably held.

Further, when the embroidery frame 1 is removed from the mounting hole 25, as shown in FIG. 3, a finger is put into either one or both of the convex relief grooves 26 to attach the fixing jig 7 to the fixture. All you have to do is hang your finger and pull it up roughly, and you can easily remove it with one touch.

Next, FIGS. 4 and 5 show a modified example of the first embodiment, in which a small range main part 30 including a convex relief recess 26 and a cantilever arm 29 and a device other than the small range main part 30 are provided. Body 21
Are separately formed (each of the resins used is the same as that in the first embodiment), and the small range main part 30 is attached to the device main body 21 with screws 3.
The second embodiment is different from the above-described embodiment only in that it is detachably attached. According to this modified example, when the width of the fixture fixing convex portion 7 is changed, or when the small range main part 30 is worn due to long-term use, only the small range main part 30 is easily and inexpensively replaced. be able to.

Next, FIGS. 6 and 7 show an embroidery frame attaching device 40 of the second embodiment, which is different from the first embodiment in the following points. A point where the device body 41 is formed of a wooden board. One of the protrusion relief recesses 42 is the protrusion 7 for fixing the fixture.
A width slightly larger than the width of the fitting fixing convex portion 7 and a depth substantially equal to the amount of protrusion of the fixture fixing convex portion 7, and the other convex portion relief concave portion 43 is a width slightly larger than the width of the fixture fixing convex portion 7. The point formed at a depth deeper than the protrusion of the fixture fixing convex portion 7 by at least the amount of a human finger. A point in which a pair of U-shaped leaf springs 44 made of metal as elastic holding portions are provided on both sides of each of the convex portion relief concave portions 42, 43. The embroidery frame attachment device 40 of this embodiment can also achieve the same effects as those of the first embodiment.

Next, FIG. 8 shows a modified example of the fitting in the above embodiment, which is disclosed in Japanese Patent Laid-Open No. 5-179559. That is, the device main body 21
The rear attachment 33 attached to the rear of the drive frame 10
Is inserted under the leaf spring 34 provided on the drive frame 10 and sandwiched and held, and the pin 35 erected on the drive frame 10 is provided with the notch 3
By entering 6, the lateral movement is restricted. Further, the front attachment 37 attached to the front of the apparatus main body 21 is magnetically attracted to the magnet 38 provided on the drive frame 10, and the pin 35 standing on the drive frame 10 enters into the hole 39. As a result, the movement in the left-right and front-back directions is restricted. In the figure, the embroidery frame attachment device 20 in which only one attachment hole 25 is formed is shown.

The present invention is not limited to the configuration of the above-described embodiment, but may be embodied with appropriate modifications within the scope not departing from the gist of the invention, for example, as follows. (1) The shapes of the embroidery frame and the mounting holes are not limited to the circular shape, and can be changed to, for example, a quadrangle or a hexagon. (2) The shape of the bottom of the relief recess and the shape of the cantilever arm can be changed as appropriate.

[0029]

As described in detail above, according to the embroidery frame attachment device of the present invention, regardless of the thickness of the fabric stretched on the embroidery frame, the embroidery frame is not forcefully applied to the attachment hole. In addition, the respective parts can be easily fitted and mounted without damaging the parts, and the embroidery frame can be easily removed from the mounting hole with one touch.

[Brief description of drawings]

FIG. 1 is a plan view of an embroidery frame attachment device according to a first embodiment of the present invention.

FIG. 2 is a partial plan view when an embroidery frame is attached to the embroidery frame attachment device.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is an exploded perspective view of essential parts of a modification of the first embodiment.

FIG. 5 is a perspective view of a main part of the modification.

FIG. 6 is a partial plan view of an embroidery frame attaching device according to a second embodiment of the present invention.

FIG. 7 is a cross-sectional view of a main part of the embroidery frame attachment device.

FIG. 8 is a plan view showing a modified example of the fixture in the embodiment.

FIG. 9 is a plan view of a general embroidery frame.

FIG. 10 is a plan view of a thin cloth stretched on the embroidery frame.

FIG. 11 is a plan view when a thick cloth is spread on the embroidery frame.

FIG. 12 is a plan view of a conventional embroidery frame attachment device.

FIG. 13 is a partial plan view when an embroidery frame is attached to the embroidery frame attachment device.

[Explanation of symbols] 1 Embroidery frame 7 Convex part for fixing fixture 20 Embroidery frame mounting device 21 Device body 25 Mounting hole 26 Relief concave part 29 Cantilever arm as elastic clamping part 30 Small range essential part 40 Embroidery frame mounting device 41 Device Main Body 43 Convex Escape Recessed Concave 44 Leaf Spring as Elastic Clamping Part

Claims (8)

[Claims] 1. A mounting hole for removably mounting an embroidery frame is formed on the main body of the apparatus, and an inner peripheral surface of the mounting hole is provided for releasing a mounting tool fixing projection formed on the outer periphery of the embroidery frame. In the embroidery frame attachment device in which the escape recess is formed, the escape recess is formed deeper than the protrusion amount of the fixture fixing projection by at least the amount of a human finger, and the escape recess is provided for fixing the fixture. An embroidery frame attachment device, characterized in that an elastic clamping portion for clamping the convex portion with elastic force is provided. 2. The embroidery frame attachment device according to claim 1, wherein the elastic holding portion is a pair of cantilever arms made of resin. 3. The embroidery frame attachment device according to claim 2, wherein the pair of cantilever arms are constricted at their free ends such that a space between them is slightly narrowed. 4. The embroidery frame attachment device according to claim 1, wherein the elastic holding portions are a pair of leaf springs made of metal. 5. The embroidery frame attachment device according to claim 1, 2 or 3, wherein a small range main part including the escape recess and the elastic sandwiching part and the device body other than the small range main part are integrally formed. 6. A small-range main part including the escape recess and the elastic holding part and the device main body other than the small-range main part are separately formed, and the small-range main part is attachable to and detachable from the device main body. The embroidery frame attachment device according to claim 1, 2 or 3, which is attached. 7. The small area main part is formed of a resin having high wear resistance and relatively easy to elastically deform, and the main body of the apparatus is formed of a resin relatively hard to elastically deform. Embroidery frame attachment device. 8. The apparatus body is formed with a plurality of the mounting holes having different inner diameters arranged in a straight line, and a plurality of needle drop marks spaced in the linear direction are provided on an upper surface of the apparatus body. Item 1. The embroidery frame attachment device according to Item 1.