JP5478046B2 - Sewing machine embroidery frame - Google Patents

Description

  The present invention relates to an embroidery frame for a sewing machine that embroiders over a wide area and can be stretched so that almost no wrinkles are generated on a fabric.

  An embroidery frame employed in a home embroidery sewing machine has a structure in which a cloth is sandwiched between two parts such as an “outer frame / inner frame” method or an “upper frame / lower frame” method. In the “outer frame / inner frame” method, an opening is formed in a part of the outer frame, the opening is coupled with a screw, and the area of the opening of the outer frame is reduced by tightening the screw. Is in close contact with the inner frame. However, it is unexpectedly difficult to push the inner frame into the outer frame so that the tension is even with the cloth, and the cloth cannot be attached as expected (Patent Document 1).

  In the “upper frame / lower frame” method, the upper frame and the lower frame are rotatably coupled by a hinge or the like, and a mechanism for clamping the upper frame and the lower frame is provided to be in close contact with each other. In this case, since there is a hinge, there is a restriction on the size (width) of the cloth, and a large-size cloth cannot be mounted (Patent Document 2). In addition, there is a structure in which the embroidery frame is structured to stretch the cloth on the embroidery frame using a one-piece frame and an elastic clip-type holder.

In the clip system, the cross-sectional shape of the frame on which the cloth is to be mounted has a complicated structure because a structure for preventing the clip from being detached is provided, the state of the cloth wound around the frame is not simple, and the load on the cloth is large. On the other hand, with a simple configuration, there is a problem that the clip is easily detached (Patent Document 3).
Utility model registration No. 2526515 JP-A-11-151391 JP 2001-314679 A

  If it is necessary to change the fabric due to a combination of patterns, etc., the inner frame of the embroidery frame must be removed, the fabric moved, and the inner frame must be removed again. Therefore, workability is extremely poor. Furthermore, when sewing frame embroidery on a thick fabric such as quilt fabric with cotton sandwiched between two pieces of fabric, the fabric is thick, so the conventional "outer frame / inner frame" method etc. In the embroidery frame, the fabric concentrates on the corner of the embroidery frame and a lot of wrinkles are generated. Therefore, it is very difficult to stretch the cloth so as to have a uniform surface.

  As described above, since it is difficult to stretch the cloth uniformly, positioning is also difficult. Further, in the “upper frame / lower frame” method, the position for setting the cloth is limited and the embroidery position is also limited due to the structure of the upper frame and the lower frame. The purpose (technical problem) of the present invention is to perform embroidery over a wider range than usual, and when a thick fabric such as a quilt is attached to the embroidery frame, a uniform tension state is obtained over the entire surface. An object of the present invention is to provide an embroidery frame that can be formed and is less likely to cause wrinkles at corners.

  Therefore, as a result of intensive studies and researches to solve the above problems, the inventor of the present invention has a substantially rectangular frame composed of four frame sides that are attached to a sewing machine and spread a cloth. A holder composed of a top portion for spreading the cloth on the frame body and a guide piece formed in a bifurcated shape from both ends in the width direction of the top portion, and attached to one side of the frame body or the holder It consists of a magnet member and a member to be attracted mounted on the other side so as to face the magnet member, and each frame side part of the frame body is detachable with a magnetic force so that a cloth is stretched. In addition, a part of each of the four sides of the frame is formed with frame-side protrusions on both sides in the width direction, and holding inward at the lower ends of both guide pieces of the holder. An embroidering machine for a sewing machine, characterized in that a side protrusion is formed to be engageable with the frame side protrusion. By a it was, and solve the problem.

  The sewing machine embroidery frame characterized in that the lower end position of at least one of the guide pieces of the holder is the same surface as the lower surface of the frame side frame body. As a result, the above problems have been solved. The invention of claim 3 is the sewing machine embroidery frame according to claim 1, wherein the lower end position of at least one of the two guide pieces of the holder is at a position lower than the lower surface of the frame body. The above-mentioned problem has been solved.

  According to a fourth aspect of the present invention, there is provided a sewing machine embroidery frame characterized in that, in the description of any one of the first, second, and third aspects, the magnet member comprises only a magnet body. Settled. According to a fifth aspect of the present invention, the magnet member includes a yoke member and a magnet body, and the yoke member has side portions on both sides in the width direction of the bottom portion. By forming a sewing machine embroidery frame that is formed and the magnet body is inserted between both side portions, the above-mentioned problems are solved.

  According to the first aspect of the present invention, a holder made up of a substantially rectangular frame having four frame sides, a top and a guide piece formed in a bifurcated shape from both ends of the top in the width direction, and the frame. Or a magnet member mounted on one side of the holder and a member to be attracted mounted on the other side so as to face the magnet member. The cloth is stretched by making the tool detachable through magnetic force. Accordingly, the fabric is arranged on the frame body, and the holder is fixed to the frame side portion by the magnet member and the attracted member so as to straddle the frame side portion with both guide pieces of the holder from above the fabric. Thus, the fabric can be easily stretched.

  In addition, when the fabric is replaced with the frame body, the fabric becomes free by simply removing the holder from the frame body, and can be easily replaced. In other words, it is not necessary to detach the frame body from the carriage of the sewing machine main body in order to change the fabric, and the cloth can be easily attached and detached. Further, the both guide pieces of the frame can prevent the holder from being displaced in the width direction from the side of the frame, and can maintain a stable cloth attachment state.

  In this way, the fabric is arranged on the frame body, and the holder is fixed to each side of the frame, thereby fixing the fabric, so that the sewing work of a large combination pattern can be easily and efficiently performed. be able to. Furthermore, the cloth is attached to the frame by fixing a plurality of holders to each frame side of the frame, and in particular, fixing by the holders at the corners of the frame where wrinkles of the fabric are concentrated is excluded. Thus, an excessive load in the diagonal direction of the frame is not applied to the fabric, and a wide range of embroidery areas can be used as a tension surface, and alignment and correction thereof can be facilitated.

  In the present invention, since the holding-side protrusion is formed inward at the lower ends of the both guide pieces, the fabric can be more firmly fixed by the holding-side protrusion. . Further, the frame-side protrusion can make the fabric more firmly fixed, the holding-side protrusion is provided on the holder, and the frame-side protrusion is provided on the side of the frame. The part and the frame side protrusion are engaged with each other, and the fixing force of the holder to the frame side can be further strengthened.

  In the invention of claim 2, the lower end position of at least one of the guide pieces of the holding tool is flush with the lower surface of the frame side portion, so that the fabric attached to the frame is on the inner side of the frame In this case, the fabric can be disposed on the needle plate in a substantially contacting state, and the embroidery work can be further stabilized. In the invention of claim 4, the structure of the embroidery frame can be simplified because the magnet member is composed of only the magnet body. According to a fifth aspect of the present invention, the magnet member includes a yoke member and a magnet body. The yoke member has side portions formed on both sides in the width direction of the bottom portion, and the magnet body is inserted between the both side portions. The magnetic force of the magnet member can be made even stronger, and the fabric can be more firmly attached by the frame and the holder.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embroiderable sewing machine body 6 is composed of an arm machine frame 61 and a bed 62 as shown in FIG. A drive shaft and a needle bar (not shown) are mounted in the arm machine frame 61, and the needle bar moves up and down by the rotation of the drive shaft. The bed 62 incorporates needle thread catching means that operates in synchronization with the vertical movement of the needle bar, and is provided with a work surface for normal sewing and embroidery sewing. A board is installed. An XY drive mechanism that reciprocates the carriage 7 and the frame 1 mounted on the carriage 7 in the XY direction is mounted inside the bed 62.

  As shown in FIGS. 1 and 2, the embroidery frame according to the present invention mainly includes a frame body 1, a holder 2, a magnet member 3, and an attracted member 4. As shown in FIGS. 3A and 3B, the frame 1 is formed as a substantially rectangular frame such as a rectangle or a square, and each of the four sides constituting the frame 1 is framed. These are referred to as sides 11, 11,. The cross-sectional shape of the frame side portion 11 is a square shape such as a square or a rectangle. The frame body 1 is formed with a clamp knob 12, and the clamp knob 12 is fixed to a carriage of an embroidery frame driving mechanism of the sewing machine body, which will be described later, and is attached to the sewing machine. The frame 1 is formed from a synthetic resin.

  As shown in FIG. 4, the holder 2 includes a top portion 21 and two guide pieces 22 and 22 formed from both ends of the top portion 21 in the width direction. Due to the top portion 21 and the two guide pieces 22, 22, the holder 2 has a substantially portal shape (see FIGS. 4A, 4 B, 4 C, and 4 E). Of the two guide pieces 22, 22, at least the guide piece 22 mounted on the inner side of the frame side part 11 has a height dimension substantially the same as the height dimension of the frame side part 11. The fabric 9 held by the frame 1 is stretched so as to be tensioned, and can be brought into close contact with the base surface of the sewing machine (see FIGS. 5A, 5C, and 8).

  The holder 2 is formed of a synthetic resin, but may be formed of a metal material. The holder 2 is placed and fixed so as to straddle each frame side portion 11 of the frame body 1 (see FIGS. 2A and 2B). The distance between the opposing inner surfaces of the guide pieces 22, 22 of the holder 2 is slightly wider than the width direction of the frame side portion 11, specifically, 1 to 3 mm from the width of the frame side portion 11. The width is about wide. The fixing means is performed by adsorption between the magnet member 3 and the attracted member 4.

  As shown in FIGS. 2C and 4, the guide pieces 22 and 22 of the holder 2 are formed with holding side protrusions 22a and 22a on the inner side. The holding side protrusion 22 a is formed in a bulging shape at the lower end portion of the guide piece 22. Specifically, the holding-side protrusions 22a and 22a are formed only at both ends in the longitudinal direction of each guide piece 22 [see FIG. 4D]. Further, frame side projections 11e and 11e are formed on both side surface portions 11b and 11b of the frame side portion 11 of the frame body 1 and in the vicinity of the lower ends thereof. The holding side protrusions 22a and 22a of the holder 2 and the frame side protrusions 11e and 11e of the frame side portion 11 are engaged with each other. Further, the fabric 9 can be more firmly attached to the embroidery frame by the frame side protrusions 11e and 11e and the holding side protrusions 22a and 22a.

  The magnet member 3 has two embodiments. The magnet member 3 is provided on either the holder 2 or the frame 1, and the attracted member 4 is provided on the other side. The magnet member 3 of the first embodiment is formed in a band plate shape, and a fixing tool 5 such as a screw is used as the fixing means. An adhesive may be used as another fixing means. In the type in which the magnet member 3 is attached to the holder 2 and the attracted member 4 is attached to the frame 1, the magnet member 3 is attached to the lower surface side of the top portion 21 of the holder 2, and the frame side of the frame 1 is The attracted member 4 is mounted on the upper surface side of the portion 11. The magnet member 3 is a permanent magnet or an electromagnet. Further, the attracted member 4 may be attached to the holder 2 and the magnet member 3 may be attached to the frame body 1.

  Next, in the second embodiment of the magnet member 3, as shown in FIGS. 6 and 7, the magnet member 3 is composed of a magnet body 31 and a yoke member 32. In this embodiment, the magnet member 3 is attached to the frame 1, and the attracted member 4 is attached to the holder 2. The frame body 1 is made of synthetic resin, and a concave portion 11d is formed on the upper surface 11a of each frame side portion 11 as shown in FIGS. 6C and 6F, and the magnet member 3 is formed in the concave portion 11d. Is embedded (see FIGS. 6B and 6E). The yoke member 32 is formed of a metal plate and has a cross-section formed in a substantially gate shape or a substantially U-shape. The magnet body 31 is inserted into the yoke member 32, and the magnet member 3 thus configured has the concave portion. 11d. The upper ends of both side portions 32a and 32a of the yoke member 32 are accommodated in the concave portion 11d so as to slightly protrude from the upper surface 11a of the frame side portion 11. And the magnet member 3 can exhibit a much stronger magnetic force by comprising the magnet body 31 and the yoke member 32.

  As in the first embodiment described above, the holder 2 is sandwiched between the guide pieces 22 and 22 so as to straddle the frame side portion 11 of the frame 1 (see FIG. 7). On the lower surface side of the top portion 21 of the holder 2, a flat member 4 is attached. Of the two guide pieces 22, 22 of the holder 2, it is preferable that at least the guide piece 22 mounted on the inner side of the frame side portion 11 has substantially the same height as the frame side portion 11. A magnetic circuit is formed by inserting the magnet body 31 into the yoke member 32, and a magnetic force is concentrated on the tips of the narrow side portions 32 a and 32 a of the yoke member 32, so that the yoke member 32 used as a pressing portion of the fabric 9 is used. The holding force is concentrated on the tip portions of the both side portions 32a and 32a, and the cloth can be firmly fixed. Although not particularly shown, the magnet member 3 composed of the magnet body 31 and the yoke member 32 is mounted on the holder 2, and the attracted member 4 is mounted on the frame 1. Exists.

  In a state where the holder 2 is mounted so as to straddle the frame side portion 11, the position of the lower end 22 t of at least one of the guide pieces 22, 22 is flush with the lower surface 11 c of the frame side portion 11. Formed. Further, in the state described above, the position of the lower end 22t of the guide piece 22 may be slightly lower than the lower surface 11c of the frame side portion 11. While the fabric 9 of the embroidery object is placed and held at a predetermined position on the upper surface side of the frame body 1, the fabric 9 is held between the frame side portions 11 by the guide pieces 22 and 22 of the holder 2. Fix it. The holder 2 is mounted at a predetermined location excluding the corner portion of the frame 1, and the holder 2 is fixed to the frame side portion 11 by the magnet member 3 and the attracted member 4. The fabric 9 can be stretched at a position substantially equal to the lower surface 11 c of the frame side portion 11 by the guide piece 22 which is on the inner side of the frame body 1 among the guide pieces 22, 22 of the holder 2. .

  A frame body 1 in which a fabric 9 is stretched on a carriage 7 of an embroidery frame driving mechanism mounted on a sewing machine body 6 is fixed via a clamp knob 12. When the fabric 9 is to be replaced with the embroidery frame 1 attached to the sewing machine body 6, the frame 1 is attached to the carriage 7 of the embroidery frame drive mechanism when the operation of the sewing machine body 6 is stopped. Remove the holders 2, 2, ... while still attached. Then, the fabric 9 is moved by a predetermined amount, positioned with a positioning template or the like, and the holders 2, 2,. Thereby, the replacement of the embroidery frame is completed.

(A) is a perspective view of the state where the embroidery frame on which the magnet member of the first embodiment is mounted is mounted on the carriage of the sewing machine, and (B) is an enlarged perspective view of the main part of (A). (A) is a perspective view of a state where a holder is mounted on a frame provided with the magnet member of the first embodiment, (B) is an enlarged cross-sectional view taken along arrow Xa-Xa of (A), and (C) is It is sectional drawing of the state which isolate | separated the frame and holder in 1st Embodiment. (A) is a perspective view of a frame, (B) is a plan view of the frame, and (C) is an enlarged end view taken along the line Xb-Xb of (B). (A) is a perspective view of a holder equipped with the magnet member of the first embodiment, (B) is a perspective view seen from below the holder, (C) is an enlarged cross-sectional view taken along arrow Xc-Xc in (A). (D) is sectional drawing of the state which isolate | separated the magnet member from the holder, (E) is Xd-Xd arrow expanded sectional view of (A). (A) is a perspective view of the state which fixed the fabric to the frame via the holder provided with the magnet member of the first embodiment, and (B) and (C) are process diagrams for fixing the fabric. (A) is a top view of the frame which mounted | wore with the magnet member of 2nd Embodiment in this invention, (B) is Xe-Xe arrow expanded sectional view of (A), (C) is a magnet member from a frame side part. (D) is a cross-sectional view of the magnet body and the yoke member separated, (E) is a perspective view of the main part at the mounting position of the magnet member, and (F) is a main part of the recess formed in the frame side part. FIG. (A) is principal part sectional drawing which is going to mount | wear a embroidery frame with the frame which has the magnet member of 2nd Embodiment, and a holder, (B) is the frame and holding which has the magnet member of 2nd Embodiment. It is principal part sectional drawing of the state which mounted | wore with the embroidery frame with the tool. It is the top view which mounted | wore with the cloth with the embroidery frame of this invention. It is the top view which mounted | wore with the cloth with the conventional type embroidery frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Frame body, 11 ... Frame edge part, 11e ... Frame side protrusion part, 2 ... Holder, 21 ... Top part,
22 ... guide piece, 22a ... holding side protrusion, 3 ... magnet member, 31 ... magnet body,
32 ... Yoke member, 32a ... Side, 32b ... Bottom, 4 ... Adsorbed member.

Claims (5)

Forming a frame body of substantially rectangular shape composed of frame pieces of the four sides to be mounted on the sewing machine to stretched cloth, from both ends in the width direction of top and said top for stretched fabric to the frame forked A holding tool comprising a guide piece formed,
A magnet member mounted on one side of the frame or the holder;
It consists of an attracted member mounted on the other side facing the magnet member,
Each frame side portion of the frame body is made of a fabric that is detachable through magnetic force, and a part of each of the four side frame side portions is provided on both sides in the width direction. A frame-side protrusion is formed, and a holding-side protrusion toward the inside is formed at the lower ends of both guide pieces of the holder so as to be engageable with the frame-side protrusion. Sewing embroidery frame.   2. The sewing machine embroidery frame according to claim 1, wherein a lower end position of at least one of the guide pieces of the holder is flush with a lower surface of the frame side frame. 2. The sewing machine embroidery frame according to claim 1, wherein a lower end position of at least one of the guide pieces of the holding tool is located at a position lower than a lower surface of the frame body. In the description of any one of claims 1, 2 or 3, wherein the magnet member, sewing machine embroidery frame, characterized in that it consists of only the magnet body. In the description of any one of claims 1, 2 or 3, wherein the magnet member is composed of a yoke member and the magnet, the yoke member side is formed on both sides in the width direction of the bottom, between the side portions A sewing machine embroidery frame in which the magnet body is inserted.

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