JP6434803B2 - Embroidery frame - Google Patents

Description

  The present invention relates to an embroidery frame on which an object to be embroidered such as cloth, leather, resin sheet or the like is stretched for embroidery processing.

  A conventional embroidery frame includes an inner frame having a constant ring shape and an outer frame having a similar ring shape larger than the inner frame, and includes an outer peripheral surface of the inner frame and an inner peripheral surface of the outer frame. An embroidery object such as a cloth is sandwiched between them, a processing area is expanded in the embroidery frame, and an outer frame is formed according to the thickness of the embroidery object by an expansion / contraction adjustment mechanism using a screw provided in one place of the outer frame. In most cases, a moderate clamping force is obtained by adjusting the expansion and contraction (Patent Document 1).

  Also, an expansion / contraction adjustment mechanism is provided at two locations on the outer frame to obtain a uniform clamping force over the entire circumference (Patent Document 2), or a spring that biases the outer frame expansion / contraction adjustment mechanism in the direction of expanding the outer frame. Is also known (Patent Document 3) that eliminates the trouble of expanding the outer frame by the user.

JP-A-6-101155 JP-A-6-2253 JP 2008-279184 A

  However, the constant ring shape of the conventional embroidery frame is mostly circular or quadrangular, and variation is scarce. Depending on the object to be embroidered, it may be desirable to embroidery to the vicinity of the edges or corners or to narrow places. However, in the case of circular or square embroidery frames (especially embroidery frames with a large ring length) There were many cases where embroidery processing could not be performed because of the inability to extend. In order to make this embroidery work possible, for example, if an embroidery frame having a ring shape such as an ellipse or a triangle is to be produced, it is necessary to form both the inner frame and the outer frame into a desired ring shape. And there was a problem that the number of slots owned increased.

  Further, the expansion / contraction adjustment mechanism using screws not only takes time and effort for adjustment, but also, if not adjusted properly, there is a possibility that the object to be embroidered will loosen during embroidery processing due to insufficient clamping force.

  Accordingly, an object of the present invention is to allow various ring-shaped embroidery frames to be formed without replacing the outer frame, so that the embroidery processing can be carried out by extending even in the vicinity of the edge or corner of the article to be embroidered or in a narrow portion. There is. Furthermore, there is a need to obtain a holding force of the embroidery object without adjusting the enlargement / reduction of the outer frame or to form embroidery frames of various ring lengths.

An embroidery frame of the present invention includes an inner frame having a ring shape and an outer frame having a ring shape larger than the inner frame, and an embroidery object is placed between the outer peripheral surface of the inner frame and the inner peripheral surface of the outer frame. in embroidery frame for clamping the outer frame, the ring-shaped circular, as can also be changed to any of the oval and polygonal, and formed into flexible ring inward and outward directions, the structure of the outer frame of the following aspects (A) or (b) .

  Here, it is preferable that the change to the polygon can be changed to at least either a square or a triangle. This is because squares and triangles are considered to be frequently used. Further, the ring shape of the outer frame can be changed to any of a circle, an ellipse, and a polygon, so that it can be changed to an irregular shape combining these shapes.

(A) The outer frame includes a plurality of abutting bodies that abut on the object to be embroidered, and a plurality of hinges that flexibly connect between the abutting bodies and the abutting bodies in the inner and outer directions of the ring. The aspect which is provided with the band which becomes continuous.
Examples of the band include a mode in which a contact body and a hinge (for example, an integral hinge) are integrally formed of a resin, a mode in which a contact body and a hinge formed separately are connected, and the like. In the aspect in which the contact body and the hinge are integrally formed of resin, a groove for increasing the flexibility of the outer frame may be provided on the ring outer peripheral surface side of the contact body.

The outer frame may be provided with a band coupling body that elastically stretches between the end portions of the band in the ring length direction.
In addition, the outer frame may include a plurality of the bands and a band connecting body that connects the bands to each other in an elastic stretchable manner in the ring length direction. In this manner, outer frames having various ring lengths can be formed by connecting a plurality of bands.
Examples of the band connection body include a rubber body and a coil spring.
The outer frame may be provided with an expansion / contraction adjustment mechanism that connects the end portions of the band so as to be adjustable in the ring length direction.

(B) The outer frame has a plurality of abutting bodies to be brought into contact with the embroidery object, and a space between the abutting bodies and the abutting body is flexible in the ring inner and outer directions and elastic in the ring length direction. A mode in which connected bodies to be connected are alternately connected.
Examples of the coupling body include a rubber body and a coil spring.

  In the above aspects (a) and (b), the abutment body is not limited to a specific shape, but examples thereof include those formed in a block shape that forms a square when viewed from the inside of the ring. Moreover, it is preferable that the adjacent surfaces of the contact body and the contact body are inclined surfaces whose intervals are increased toward the inner side of the ring. This is because when the outer frame is bent to have a small radius of curvature, the adjacent surfaces of the contact body and the contact body do not hit each other even if they approach each other.

  Further, the total number of contact bodies provided in the outer frame is not particularly limited, but is preferably 12 to 200. This is because if the number of contact bodies is less than 12, the ring shape tends to be irregular when the ring shape is changed to a polygon, and if the number of contact bodies exceeds 200, the outer frame becomes difficult to handle.

  The inner frame does not have to be flexible in the ring inside / outside like the outer frame, but may be flexible in the ring inside / outside like the outer frame. If the inner frame is not flexible, it can be formed of, for example, a resin (including a fiber reinforced resin), a wooden material, or the like. Among wooden materials, an inner frame formed by cutting MDF (medium fiber board), in particular, can be manufactured at low cost because it does not require a mold.

  According to the embroidery frame of the present invention, various ring-shaped embroidery frames can be formed without replacing the outer frame, and the embroidery processing can be performed by expanding even in the vicinity of the edge or corner of the embroidery object or in a narrow part. Therefore, the cost can be reduced. Furthermore, by providing the elastic stretchable band coupling body, it is possible to obtain the clamping force of the embroidery object without adjusting the expansion / contraction of the outer frame. Further, by connecting a plurality of bands with elastic stretchable band connectors, embroidery frames with various ring lengths can be formed.

It is a disassembled perspective view when the outer frame of the embroidery frame of Example 1 and the triangular inner frame are separated. A part of the outer frame is shown, (a) is a perspective view seen from the outside, (b) is an exploded perspective view when the band connector is attached, (c) is a plan view, and (d) is seen from the inside. It is a perspective view. (A) is a plan view showing an embroidery frame and a holding adapter, etc., in which the outer frame is fitted to the inner frame, and (b) is a plan view when the embroidery frame is turned upside down and attached to the holding adapter. It is IV-IV sectional drawing of FIG.3 (b). The rectangular inner frame of the embroidery frame is shown, (a) is a perspective view, and (b) is a plan view when the outer frame is fitted to the inner frame. The circular inner frame of the embroidery frame is shown, (a) is a perspective view, and (b) is a plan view when the outer frame is fitted to the inner frame. It is a disassembled perspective view when the outer frame of the embroidery frame of Example 2 and the inner frame of, for example, a triangle are separated. (A) is a plan view of the outer frame, and (b) is a plan view of an embroidery frame in which the outer frame is fitted to the inner frame.

  As described above, the embroidery frame includes an inner frame having a ring shape and an outer frame having a ring shape larger than the inner frame, and an embroidery object is provided between the outer peripheral surface of the inner frame and the inner peripheral surface of the outer frame. In the embroidery frame sandwiching the outer shell, the outer frame is formed in a flexible manner in the ring inner and outer directions so that the ring shape can be changed to any of a circle, an ellipse and a polygon. For body use.

  The embroidery frame 1 according to the first embodiment shown in FIGS. 1 to 6 is held by a drive mechanism between a sewing head 42 that drives a needle 41 and a bed 44 that drives a shuttle 43 of an embroidery sewing machine. It is driven by.

  As shown in FIG. 4, the drive frame 45 of the drive mechanism of the embroidery sewing machine is provided with two holding frames 46 extending forward and left and right, and if the embroidery frame 1 is close to the distance, 2 If the embroidery frame 1 is directly held by the two holding frames 46 and is considerably smaller than the interval, it is held by the two holding frames 46 via the holding adapter 50. Although the embroidery frame 1 in the illustrated example is the latter, it can also be configured like the former.

  In the holding adapter 50, left and right mounting portions 51 respectively mounted on the two holding frames 46 and two arch portions 52 extending between the front ends and the rear ends of the left and right mounting portions 51 are integrally formed of resin. It has been made. A positioning convex portion 53 is formed at the inner central portion of each arch portion 52.

  Now, the embroidery frame 1 of the present embodiment has an inner frame 2 having a ring shape and larger than the inner frame 2 (the ring length is longer than the inner frame and when deformed to the same shape as the inner frame, the inner frame 2 An outer frame 3 having a ring shape (which is a slightly larger similar shape), and between the outer peripheral surface of the inner frame 2 and the inner peripheral surface of the outer frame 3, an embroidery object W such as cloth, leather, resin sheet or the like. And the processing area is expanded in the embroidery frame.

  Three types of inner frame 2 are illustrated, and three types of predetermined shapes (inner frame 2 in FIG. 1 are triangular, inner frame 2 in FIG. The inner frame 2 has a circular shape and the ring length is the same. In the case of a polygon, each side is curved so as to protrude outward from the ring, and each corner is rounded. The inner frame 2 is additionally formed with a flange 21 for mounting between the two arch portions 52 of the holding adapter 50, and positioning that fits the positioning convex portion 53 at two locations on the outer periphery of the flange 21. A concave portion 22 is formed, and a locking piece 23 is provided to be locked on the positioning convex portion 53. The inner frame 2 and the flange 21 of the present embodiment are integrally formed by cutting MDF. The inner frame 2 does not have flexibility in the inner and outer directions of the ring.

  One type of outer frame 3 is illustrated, and is formed to be flexible in the ring inner and outer directions so that the ring shape can be changed to any of a circle, an ellipse, and a polygon. The outer frame 3 in a natural state that is not fitted in the inner frame 2 has an indefinite shape because of its flexibility, but has a ring shape close to a circle. The outer frame 3 includes a plurality of contact bodies 6 for contacting the embroidery object W, and a plurality of integral hinges 7 that flexibly connect the contact body 6 and the contact body 6. In addition to two bands (first band 4 and second band 5) integrally formed of resin so as to be alternately connected, elastic expansion and contraction between the first band 4 and the second band 5 in the ring length direction Two band connectors 10 that are connected to each other are provided. Since each of the bands 4 and 5 can be integrally formed with resin, the number of parts and the cost can be reduced.

  Each contact body 6 of each of the bands 4 and 5 is formed in a rectangular block shape when viewed from the inside of the ring, and adjacent surfaces 6a and 6a of the contact body 6 and the contact body 6 are located on the inner side of the ring. It is an inclined surface whose interval increases as it goes to, and thus has a trapezoidal shape in plan view. The pitch (center distance) between the adjacent contact bodies 6 is about 15 mm, for example. The abutment body 6 does not have flexibility in the inner and outer rings, but may be a contact body 6 having a smaller flexibility than the hinge.

  Each integral hinge 7 of each band 4, 5 is a thin part formed thinner than the contact body 6, and the contact body 6 and the contact body 6 are flexible in the ring inner and outer directions near the ring outer peripheral surface. It is linked to.

  The band connection body 10 is formed by integrally forming a connection band 11 and fitting projections 12 at both ends thereof with rubber. The fitting projection 12 is fitted into a fitting recess 8 formed in the contact body 6 at the end of each band 4, 5. The space | interval between the band edge parts connected by the band coupling body 10 is 2-5 mm, for example.

  In the illustrated example, the first band 4 has a band length of about 300 mm and includes 20 contact bodies 6 and 19 integral hinges 7 alternately. In addition, the second band 5 has a band length of about 60 mm and includes four contact bodies 6 and three integral hinges 7 alternately. Therefore, the total number of contact bodies 6 included in the outer frame 3 is 24, and the ring length is about 360 mm.

A method of using the embroidery frame 1 configured as described above will be described.
(1) The optimum ring shape of the embroidery frame is selected according to the shape of the embroidery object W, the processing position of the embroidery object W (for example, the vicinity of the edge or corner or a narrow area), and the embroidery processing shape. In this embodiment, the inner frame 2 is selected from the inner frame formed in the triangle of FIG. 1, the quadrangle of FIG. 5, the circle of FIG. 6, or other shapes not shown (for example, an ellipse).

(2) The embroidery object W is sandwiched between the outer peripheral surface of the selected inner frame 2 and the inner peripheral surface of the outer frame 3, and the processing area is expanded in the embroidery frame 1. For this purpose, as shown in FIGS. 1, 3 (a), 4, 5 (b), and 6 (b), first, the embroidery object W is put on the inner frame 2, and the processing area is set to the inner frame 2. The outside of the processing area is hung around the inner frame 2 in accordance with the frame area. Then, the outer frame 3 is placed on the article W to be embroidered, the band connecting body 10 is elastically extended to increase the ring length, and the ring shape is similar to the inner frame 2 by the flexibility of the integral hinge 7. The shape is deformed into a triangle, a quadrangle, or a circle, and is fitted to the outside of the inner frame 2. Since the adjacent surfaces of the contact body 6 and the contact body 6 are inclined surfaces as described above, even if the outer frame 3 is curved to a small radius of curvature at a polygonal corner, it does not hit.

(3) As shown in FIGS. 3A and 3B, the embroidery frame 1 is turned upside down and the flange 21 is press-fitted between the two arch portions 52 of the holding adapter 50 for positioning. The positioning concave portion 22 is fitted to the convex portion 53, and the locking piece 23 is locked on the positioning convex portion 53 (FIG. 4).

(4) While driving the embroidery frame 1 back and forth and right and left by the drive mechanism, the embroidery processing is performed in the processing area of the embroidery object W in cooperation with the sewing head 42 and the bed 44 as shown in FIG.

  According to the embroidery frame 1 of the present embodiment, various ring-shaped embroidery frames 1 can be formed by bending in and out of the ring without replacing the outer frame 3, and the edges or corners of the embroidery object W can be formed. It is possible to embroidery by extending it in the vicinity and narrow places. The embroidery object W such as cloth, leather, resin sheet or the like to be spread on the embroidery frame 1 may be an embroidery object W in a simple sheet state before sewing processing, or sewing processed products such as clothes, trousers and bags after sewing processing. The to-be-embroidered object W in the state of becoming may be sufficient. In particular, the embroidery object W in the state of being a sewing product is often intended to be embroidered by expanding a narrow part, and therefore the present invention that can form various ring-shaped embroidery frames 1 according to the part is useful. . Further, when the ring shape is changed, the inner frame 2 is replaced, but the outer frame 3 can be used without replacement, so that the cost can be reduced.

  Further, since the outer frame 3 tightens the embroidery object W by the elastic force generated when the elastic stretchable band connector 10 is extended, it is not necessary to adjust the expansion / contraction of the outer frame with screws as in the prior art. Sufficient clamping force of the embroidery object W can be obtained.

Further, by connecting a plurality of bands 4 and 5 with an elastic stretchable band connector 10, an outer frame 3 having various ring lengths can be formed, and if an inner frame 2 having a corresponding ring length is prepared, The embroidery frame 1 having various ring lengths can be formed. In the illustrated example, one of the first bands 4 with a band length of about 300 mm and one of the second bands with a band length of about 60 mm are connected. For example, the number of bands and the number of connections are as follows. The outer frame 3 having various ring lengths can be formed by changing or by preparing and connecting bands having other band lengths.
An outer frame 3 in which only one band (for example, the first band 4) is used and the end portions of the band are connected by the band connecting body 10.
-The outer frame 3 which uses 3-5 bands (for example, the 1st band 4), and connects between the edge parts of each band with the band coupling body 10. FIG.

  Moreover, since the inner frame 2 formed by cutting MDF does not require a mold for its production, the cost can be reduced.

  The embroidery frame 1 of Example 2 shown in FIG. 7 and FIG. 8 is provided with a groove 9 for increasing the flexibility of the outer frame 3 on the ring outer peripheral surface side of the contact body 6 in the outer frame 3. The thickness of the integral hinge 7 that connects the contact body 6 to the extent that the ring 9 increases the flexibility of the ring is made larger than that of the first embodiment, and the band 4 ′ (integrated with resin) is integrated into one. The first embodiment is different from the first embodiment in that an expansion / contraction adjusting mechanism 13 is provided at both ends of the band (in place of the band connecting body 10) to connect the ends of the band 4 'in the ring length direction. Since it is different and the others are common to the first embodiment, the description of the first embodiment is used.

  The groove 9 is formed so as to extend in the ring height direction (vertical) at the center in the ring length direction of each contact body 6, and the depth thereof is, for example, 20 to 60% of the thickness of the contact body 6 (more preferably 30-50%). This groove 9 not only increases the flexibility of the ring, but also makes it easy to make good contact with the embroidery object W by elastically deforming each contact member 6 even at a location where the ring is severely deformed.

  The thickness of the integral hinge 7 that connects the contact body 6 and the contact body 6 near the outer peripheral surface of the ring is, for example, 10 to 30% of the thickness of the contact body 6 in the first embodiment. In Example 2, it is 35 to 75% (more preferably 50 to 70%) of the thickness of the contact body 6, for example. For this reason, durability of the integral hinge 7 can be improved.

  The expansion / contraction adjustment mechanism 13 is a well-known type that is also provided on the outer frame of a conventional embroidery frame, and includes terminal portions 14, 14 that are integrally formed with resin at each end of the band 4 ′, 14, female screws 15, 15 provided from the end face to the inside, and two male screws 16, 16 screwed into these female screws, and an adjustment member 18 integrally having a rotary knob 17 between them. .

  One female screw 15 and male screw 16 are right-handed screws, and the other female screw 15 and male screw 16 are left-handed screws. When the screw is deeply screwed in and the interval between the terminal portions 14 and 14 is reduced, and the screw is turned in the other direction, both the male screws 16 and 16 are disengaged from both the female screws 15 and 15 and the interval between the terminal portions 14 and 14 is increased. As described above, in the second embodiment, the ring size of the outer frame 3 can be adjusted for expansion / contraction by adjusting the distance between the terminal portions 14 and 14 by the expansion / contraction adjusting mechanism 13.

  The embroidery frame 1 according to the second embodiment uses the embroidery object W between the outer peripheral surface of the inner frame 2 whose shape is selected and the inner peripheral surface of the outer frame 3, and the processing area is set in the embroidery frame 1. (In the first embodiment, the band connecting body 10 is elastically stretched and the outer frame 3 is fitted to the outside of the inner frame 2). The method of using the embroidery frame 1 of Example 1 except that the ring size is enlarged and positioned outside the inner frame 2 and the ring size of the outer frame 3 is reduced and tightened to the inner frame 2 by the enlargement / reduction adjustment mechanism 13. The same.

  Therefore, the embroidery frame 1 according to the second embodiment can be formed into various ring-shaped embroidery frames 1 by being bent in and out of the ring. Thus, the same effects as the embroidery frame 1 of the first embodiment can be obtained.

The present invention is not limited to the above-described embodiments. For example, the present invention can be modified and embodied as appropriate without departing from the spirit of the invention as follows.
(1) The pitch (center-to-center distance) between the adjacent contact bodies 6 of the bands 4 and 5 is made smaller or larger than about 15 mm of the above embodiment (5 to 20 mm). The range is appropriate.)
(2) The band connector 10 is formed of an elastic material other than rubber (for example, a coil spring).

DESCRIPTION OF SYMBOLS 1 Embroidery frame 2 Inner frame 3 Outer frame 4 1st band 5 2nd band 6 Contact body 7 Integral hinge 8 Fitting recessed part 9 Groove 10 Band connection body 11 Connection band 12 Fitting convex part 13 Expansion / contraction adjustment mechanism 14 Terminal part 1
DESCRIPTION OF SYMBOLS 15 Female screw 16 Male screw 17 Rotation knob 18 Adjustment member 21 Flange 22 Positioning recessed part 23 Locking piece 41 Needle 42 Sewing head 43 Pot 44 Bed 45 Drive frame 46 Holding frame 50 Holding adapter 51 Mounting part 52 Arch part 53 Positioning convex part W Embroidery

Claims (12)

An embroidery frame having an inner frame having a ring shape and an outer frame having a ring shape larger than the inner frame, wherein an embroidery object is sandwiched between the outer peripheral surface of the inner frame and the inner peripheral surface of the outer frame. The frame is formed in a flexible manner inside and outside the ring so that the ring shape can be changed to any of a circle, an ellipse, and a polygon. An embroidery frame comprising: a body, and a band in which a plurality of hinges that flexibly connect the contact body and the contact body in the inner and outer directions of the ring . Band, the abutting member and the embroidery frame according to claim 1, wherein the hinge is formed by integral formation of resin. The embroidery frame according to claim 2, wherein a groove for increasing the flexibility of the outer frame is provided on the ring outer peripheral surface side of the contact body. Embroidery frame of bands, according to claim 1, wherein the abutment body and hinges separately formed are those that are connected. The embroidery frame according to any one of claims 1 to 4 , wherein the outer frame includes a band coupling body that elastically stretches between the end portions of the band in the ring length direction. The outer frame includes a plurality of bands, according to claim 1 between those with a band connecting member for connecting the elastically stretchable in the ring length direction of the band and the band Embroidery frame. The embroidery frame according to any one of claims 1 to 4 , wherein the outer frame includes an expansion / contraction adjustment mechanism that connects the end portions of the band so as to be adjustable in the ring length direction. An embroidery frame having an inner frame having a ring shape and an outer frame having a ring shape larger than the inner frame, wherein an embroidery object is sandwiched between the outer peripheral surface of the inner frame and the inner peripheral surface of the outer frame. The frame is formed in a flexible manner inside and outside the ring so that the ring shape can be changed to any of a circle, an ellipse, and a polygon. An embroidery frame comprising: a body, and a connecting body that connects the contact body and the contact body in a flexible manner and elastically stretchable in a ring length direction. . The embroidery frame according to any one of claims 1 to 8 , wherein the contact body is formed in a block shape having a square shape when viewed from the inside of the ring. The embroidery frame according to claim 9 , wherein adjacent surfaces of the contact body and the contact body are inclined surfaces whose intervals increase toward the inner side of the ring. The embroidery frame according to any one of claims 1 to 10 , wherein a total number of contact bodies provided in the outer frame is 12 to 200. The embroidery frame according to any one of claims 1 to 11 , wherein the inner frame is formed by cutting MDF.

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