EP0442876A1 - Non-circular hoop frame for embroidery. - Google Patents
Non-circular hoop frame for embroidery.Info
- Publication number
- EP0442876A1 EP0442876A1 EP89905096A EP89905096A EP0442876A1 EP 0442876 A1 EP0442876 A1 EP 0442876A1 EP 89905096 A EP89905096 A EP 89905096A EP 89905096 A EP89905096 A EP 89905096A EP 0442876 A1 EP0442876 A1 EP 0442876A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- embroidery
- frame
- axes
- cross
- outer frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C9/00—Appliances for holding or feeding the base fabric in embroidering machines
- D05C9/02—Appliances for holding or feeding the base fabric in embroidering machines in machines with vertical needles
- D05C9/04—Work holders, e.g. frames
Definitions
- the invention relates to an embroidery hoop according to the preamble of claim 1 (Pfaff data sheet No. 296-12-16263 9/86 / G multi-head embroidery machine KSM 200).
- Embroidery heads of embroidery machines used embroidery frames consist of a closed inner frame and a slotted outer frame connected at its ends by a tensioning device, which surrounds the inner frame with the interposition of the fabric.
- the frames are made of the same material as wood or plastic.
- To edit embroidery designs of different geometrical dimensions embroidery frames with a circular, elliptical to almost rectangular-like outline shape are included
- the tensioning device arranged on the outer frame outside the plane of symmetry serves to adjust the holding force between the inner and outer frame and enables adaptation to different fabric thicknesses.
- Frame parts in certain diameter gradations are known in order to eliminate the influence of the different radii of curvature.
- the use of circular clamping frames is not appropriate.
- the invention has for its object to develop an embroidery frame according to the preamble of claim 1 so that a largely uniform pressure distribution is achieved over the entire circumference of the embroidery frame between the inner and outer frame.
- the pressure distribution is very even across the entire clamping area of the embroidery frame by reducing the tensile stiffness of the inner frame in the area of the smallest radius of curvature while maintaining a high bending stiffness and the associated low flexibility in the area of the small axis.
- a particularly advantageous embodiment of the inner frame for realizing the features specified in claim 1 is specified in claim 2. Through this Shaping also achieves remarkable material savings.
- the pressure distribution is further smoothed.
- 1 is a plan view of a rectangular embroidery hoop with fillets and two turnbuckles
- Fig. 2 is a plan view of a portion of the
- Fig. 4 is a section along the line IV-IV of Fig. 2 and
- the embroidery hoop consists of a closed inner hoop (1) of approximately rectangular outline shape with fillets and one at (2) in the exemplary embodiment Slotted outer frame (3) in two places, which surrounds the inner frame (1) with embroidery material interposed.
- the small axis of the embroidery frame is labeled (Sl) and the large axis is labeled (S2).
- the areas of the inner and outer frame (1 and 3) with the smallest radius of curvature are designated with (R min). These are the areas in which there are high pressure concentrations if the cross-section of the inner and outer frame over the entire development length is uniformly continuous z.
- B. is rectangular.
- a turnbuckle (4) is provided, which consists of two tabs (5, 6) on both sides of the separation point (2) on the outside of the outer frame (3) z. B. are attached by riveting and are bent at their separation point (2) adjacent end to an eyelet (7, 8).
- eyelet (7) of the one tab (5) is a cylindrical, provided with a transverse threaded bore
- the horizontal web (14) has a threaded hole for fastening the embroidery frame by toggle screws (15) which are carried out through a through hole in the frame guide (12).
- the cross-sectional shape in addition to other conceivable cross-sectional shapes, is preferably designed such that the inner frame has an essentially rectangular cross-section in the region of both the small and the large axis, which, starting therefrom, merges continuously into a T-shaped cross-section with a horizontally inwardly directed web and in Area of the smallest radius of curvature reached a minimum.
- a uniform pressure distribution is also achieved by a corresponding design of the outer frame (3) with a stiffness distribution that is opposite to that of the inner frame (1) and a modulus of elasticity that is half that of the inner frame (1).
- the sections of the outer frame (3) between two axes have, according to the invention, on the outside of the large axis (S2) and the smallest cross section starting against the small axis (Sl), there is a steady transition from a T-profile rotated by 90 with a horizontally outwardly directed web according to FIG. 3 to a rectangular cross section corresponding to FIG. 4, which is in the region of the smallest radius of curvature (R min) reached a maximum and from there continued into the profile rotated by 90 with a horizontally outwardly directed web according to FIG. 5, the smallest cross section of which is reached on the small axis (S1).
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Ce tambour a pour but d'obtenir une distribution égale de la pression sur toute la surface par serrage entre le cadre intérieur et le cadre extérieur. A cet effet, la forme de la section du cadre intérieur (1), dans la portion entre les deux axes (S1, S2), est telle que la résistance à la flexion sur tout le pourtour de ce cadre (1) est approximativement constante et que la résistance à l'allongement entre ces deux axes (S1, S2) est continuellement diminuée de façon à atteindre un minimum dans la région du plus petit rayon de courbure (Rmin). La forme de la section du cadre extérieur (3), dans la portion entre les axes (S1, S2), est telle que la résistance à l'allongement entre les axes (S1, S2) varie en sens inverse de celle du cadre intérieur (1). Le tambour est destiné à serrer la matière à broder. Il est utilisable dans le brodage manuel et dans le brodage à la machine.The purpose of this drum is to obtain an equal distribution of the pressure over the entire surface by clamping between the inner frame and the outer frame. For this purpose, the shape of the section of the inner frame (1), in the portion between the two axes (S1, S2), is such that the bending resistance over the entire periphery of this frame (1) is approximately constant and that the resistance to elongation between these two axes (S1, S2) is continuously reduced so as to reach a minimum in the region of the smallest radius of curvature (Rmin). The shape of the section of the outer frame (3), in the portion between the axes (S1, S2), is such that the resistance to elongation between the axes (S1, S2) varies in the opposite direction to that of the inner frame (1). The drum is intended to clamp the material to be embroidered. It can be used in manual embroidery and in machine embroidery.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3820215A DE3820215C1 (en) | 1988-06-14 | 1988-06-14 | |
DE3820215 | 1988-06-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0442876A1 true EP0442876A1 (en) | 1991-08-28 |
EP0442876B1 EP0442876B1 (en) | 1993-11-24 |
Family
ID=6356517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89905096A Expired - Lifetime EP0442876B1 (en) | 1988-06-14 | 1989-04-21 | Non-circular hoop frame for embroidery |
Country Status (5)
Country | Link |
---|---|
US (1) | US5237941A (en) |
EP (1) | EP0442876B1 (en) |
JP (1) | JPH04506837A (en) |
DE (1) | DE3820215C1 (en) |
WO (1) | WO1989012710A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5819675A (en) * | 1997-04-02 | 1998-10-13 | French; Nick L. | Finished cap frame for embroidery of logos |
US6189468B1 (en) | 2000-03-21 | 2001-02-20 | Nick L. French | Support for cap embroidery frames with tension member |
US6394012B1 (en) | 2001-05-11 | 2002-05-28 | Nick L. French | Fabric frame holder for embroidery |
US6679190B1 (en) | 2001-06-01 | 2004-01-20 | Nick L. French | Fabric holder for embroidery frames |
JP2006144200A (en) * | 2004-11-24 | 2006-06-08 | Brother Ind Ltd | Embroidery frame |
JP6102569B2 (en) * | 2013-06-27 | 2017-03-29 | ブラザー工業株式会社 | Embroidery frame and sewing machine |
JP6155901B2 (en) | 2013-06-27 | 2017-07-05 | ブラザー工業株式会社 | Embroidery frame and sewing machine |
JP2015175071A (en) * | 2014-03-14 | 2015-10-05 | ブラザー工業株式会社 | holding member |
CN114855379B (en) * | 2022-04-29 | 2023-08-08 | 常州纺织服装职业技术学院 | Embroidery frame convenient for tensioning embroidery cloth |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US623301A (en) * | 1899-04-18 | Em broidery-frame | ||
SU761636A1 (en) * | 1975-04-28 | 1980-09-07 | Elizar G Kabirov | Embroidering frame |
US4422251A (en) * | 1979-04-16 | 1983-12-27 | Hedrick Virginia L | Apparatus for quilting |
US4247998A (en) * | 1979-11-29 | 1981-02-03 | Foss Mildred B | Machine embroidery hoop |
JPS6035458B2 (en) * | 1980-08-02 | 1985-08-14 | アイシン精機株式会社 | embroidery frame |
US4451997A (en) * | 1981-03-30 | 1984-06-05 | Bruna Jones | Stretcher frame for holding fabric |
US4642924A (en) * | 1984-01-10 | 1987-02-17 | Blue Bell, Inc. | Embroidery hoop |
JPH047198Y2 (en) * | 1986-11-14 | 1992-02-26 |
-
1988
- 1988-06-14 DE DE3820215A patent/DE3820215C1/de not_active Expired
-
1989
- 1989-04-21 EP EP89905096A patent/EP0442876B1/en not_active Expired - Lifetime
- 1989-04-21 US US07/634,162 patent/US5237941A/en not_active Expired - Fee Related
- 1989-04-21 WO PCT/EP1989/000434 patent/WO1989012710A1/en active IP Right Grant
- 1989-04-21 JP JP1504497A patent/JPH04506837A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO8912710A1 * |
Also Published As
Publication number | Publication date |
---|---|
US5237941A (en) | 1993-08-24 |
JPH04506837A (en) | 1992-11-26 |
EP0442876B1 (en) | 1993-11-24 |
WO1989012710A1 (en) | 1989-12-28 |
DE3820215C1 (en) | 1989-08-17 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19901117 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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26N | No opposition filed |