JP4812927B2 - Embroidery frame - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an embroidery frame of an embroidery sewing machine that forms an embroidery pattern by driving an embroidery frame in which a cloth is stretched in time in a vertical movement of a needle in the X direction and the Y direction.
[0002]
[Prior art]
In a conventional embroidery frame, an embroidery is provided by an attachment portion for attachment to a carriage of an embroidery sewing machine, an outer frame provided with a frame portion for tensioning a cloth, and an inner frame for tensioning a cloth between the outer frame. Constructed a frame. A technique for enabling the embroidery frame to be attached to the carriage by a simple operation has been proposed in Japanese Utility Model Laid-Open No. 6-12296 by the applicant of the present application and is put into practical use.
The cross section of the carriage mounting portion is as shown in FIG. 6, and the embroidery frame outer frame 11 has a pair of guide pins 12 for engaging and positioning in holes provided in the carriage, and a groove portion of the carriage. In addition, a frame fixing pin 13 for fixing the embroidery outer frame 11 to the carriage is mounted by the pressing force of the spring 13a. The frame fixing pin 13 and the pair of guide pins 12 protrude downward from the lower surface 11c of the embroidery outer frame in order to engage with the hole and groove of the carriage. Reference numeral 16 denotes an attachment knob which is attached to the upper end of the frame fixing pin 13. Reference numeral 19 denotes a frame fixing spring which is loosely fitted to the frame fixing pin 13 and always urges the frame fixing pin 13 upward. The lower end of the frame fixing pin 13 protrudes from the lower surface 11 c of the attachment portion 11.
[0003]
Then, the embroidery cloth is arranged on the embroidery outer frame, the embroidery inner frame is arranged from above, and the embroidery cloth is sandwiched between the embroidery outer frame and the embroidery inner frame. For this reason, it is desirable that the embroidery outer frame 11 be disposed in a flat work area to perform the work. However, the frame fixing pin 13 and the pair of guide pins 12 protrude downward from the lower surface 11c of the embroidery outer frame. As a result, the lower surface of the outer embroidery frame is inclined, resulting in poor stability and problems such as the frame fixing pin 13 and the pair of guide pins 12 damaging the work surface. For this reason, there has been a drawback that the embroidery cloth must be mounted at a position where the frame fixing pin 13 and the pair of guide pins 12 are removed from the work table at the end of the work table.
[0004]
This is an obstacle to the free positioning at the center of a wide workbench, such as when adjusting the embroidery location on a large cloth.
[0005]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide an embroidery frame in which the embroidery outer frame does not tilt even at the center of a wide work table and can be freely aligned.
[0006]
[Means for Solving the Problems]
Therefore, the present invention is an embroidery frame for holding an embroidery cloth between an embroidery inner frame and an embroidery outer frame, and the embroidery outer frame is a frame for stretching the embroidery cloth between the embroidery inner frame and the embroidery outer frame. And a mounting portion for mounting on a carriage that is integral with the frame portion and connected to the embroidery frame driving means of the sewing machine, and the mounting portion is positioned by engaging with a hole provided in the carriage. A pair of guide pins for engaging with the groove portion of the carriage, and a frame fixing pin for fixing the embroidery outer frame to the carriage by the pressing force of the spring, and the mounting portion attaches the guide pin to the outer embroidery. By using an embroidery frame that is mounted so as to be movable upward so as not to protrude from the lower surface of the frame, the problem could be solved. Further, the present invention can solve the problem by making the guide pin an embroidery frame that protrudes downward from the lower surface of the embroidery outer frame by the pressing of a spring that is loosely fitted to the guide pin. It was. The frame fixing pin was disposed above the lower surface of the embroidery outer frame to solve the problem.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The object of allowing the embroidery cloth to be attached anywhere on a large work table by eliminating the protrusions from the lower surface of the embroidery outer frame, without changing the attachment state with the carriage on the embroidery machine side.
[0008]
【Example】
1 to 5 show an embodiment of the apparatus of the present invention. FIG. 1 is a plan view of an embroidery outer frame, FIG. 2 is a side view of the embroidery outer frame, FIG. 3 is a plan view of an attachment portion, and FIG. FIG. 5 is an explanatory view in which the guide pin and the frame fixing pin are moved upward from the lower surface of the embroidery outer frame.
[0009]
In FIG. 1, an embroidery outer frame 1 is provided with a frame portion 1a for stretching an embroidery cloth between the embroidery inner frame and an attachment portion 1b for mounting on the carriage integrally with the frame portion 1a. Yes.
[0010]
3 and 4, the mounting portion 1b has a pair of guide pins 2 for engaging and positioning in a hole provided in the carriage, and a groove portion of the carriage, and is pressed by a pressing force of the spring 9. A frame fixing pin 3 for fixing the embroidery outer frame 1 to the carriage is provided.
[0011]
The guide pin 2 is fitted to the attachment portion 1b so as to be movable up and down, and a collar portion 2a is provided at the upper end.
[0012]
A slot 1d is provided in the mounting portion 1b and guides the spring 4 that is loosely fitted to the guide pin 2. Further, an E-ring 5 is attached to the guide pin 2, and the spring 4 is disposed between the E-ring 5 and the bottom of the slot 1d, and always biases the E-ring 5 downward. Therefore, the guide pin 2 is always biased downward, and the collar portion 2a is positioned in contact with the upper surface of the mounting portion 1b. The lower end 2b of the guide pin 2 protrudes from the lower surface 1c of the mounting portion 1b. Yes. The outer shape of the E-ring 5 is smaller than the inner diameter of the slot 1d.
[0013]
The frame fixing pin 3 is fitted to the attachment portion 1b so as to be movable up and down, and an attachment knob 6 is provided at the upper end. The attachment knob 6 is provided with a slot 6a for guiding the spring, and the spring 7 is loosely fitted to the frame fixing pin 3. Further, the disc 8 is loosely fitted to the frame fixing pin 3, and the spring 7 is disposed between the disc 8 and the bottom of the slot 6a. The outer shape of the disk 8 is smaller than the inner diameter of the slot 6a.
[0014]
Reference numeral 9 denotes a frame fixing spring, which is loosely fitted to the frame fixing pin 3 and is arranged between the mounting portion 1b and the disk 8 and always attaches the frame fixing pin 3 together with the spring 7 via the disk 8. It is energizing upward. The lower end 3a of the frame fixing pin 3 does not protrude from the lower surface 1c of the attachment portion 1b.
[0015]
Next, the operation when the embroidery cloth of the present invention is mounted will be described. The case where the embroidery outer frame 1 is operated on a flat work table in the state shown in FIG. 4 will be described. When the embroidery outer frame 1 is pushed down from above in the state of FIG. 4, the spring 4 of the guide pin 2 is compressed, and the guide pin 2 moves upward, as shown in FIG. Thereby, there is no thing protruding from the lower surface 1c of the attachment portion 1b of the embroidery outer frame 1, and the work can be performed anywhere on the flat surface.
[0016]
The embroidery cloth is mounted on the embroidery outer frame 1 by placing the embroidery cloth on the outer embroidery frame 1 and fixing it to the inner embroidery frame.
[0017]
When the embroidery outer frame 1 is picked up from the workbench after the embroidery cloth is mounted, the guide pin 2 protrudes from the lower surface 1c of the mounting portion 1b of the embroidery outer frame 1 by the urging of the spring 4 as shown in FIG. In this state, the pair of guide pins 2 are engaged and positioned in holes provided in the carriage, and the frame fixing pins 3 are guided to the groove portions of the carriage. Then depressing the knob 6, the spring 7 is compressed frame fixing pin 3 projects from the lower surface 1c of the mounting portion 1b of the embroidery outer frame 1. Next, the knob 6 is pushed down against the bias of the frame fixing spring 9, rotated at the lowered position, engaged with the groove of the carriage, and the knob 6 is released to bias the frame fixing spring 9. Thus, the embroidery outer frame 1 is held on the carriage. The structure for holding the embroidery outer frame 1 on the carriage by urging the frame fixing spring 9 is the same as that described in Japanese Utility Model Laid-Open No. 6-12696, and will not be described.
[0018]
【The invention's effect】
As described above, according to the present invention, the embroidery outer frame can be attached to the carriage with a simple operation by the pair of guide pins for positioning on the carriage and the frame fixing pin for fixing the embroidery outer frame to the carriage. In addition, since the guide pin can be moved upward from the lower surface of the embroidery outer frame, the embroidery outer frame does not tilt even at the center of a wide work table, and positioning can be performed freely. Further, since the spring can be moved upward, after the embroidery cloth is mounted, the guide pin and the frame fixing pin are projected by the bias of the spring and function to position the carriage and fix the embroidery outer frame to the carriage. be able to.
[Brief description of the drawings]
FIG. 1 is a plan view of an embroidery frame of the present invention.
FIG. 2 is a side view of the embroidery frame of the present invention.
FIG. 3 is a plan view of the embroidery frame fixing device of the present invention.
FIG. 4 is a cross-sectional view taken along line AA of the embroidery frame fixing device of the present invention.
FIG. 5 is an operation explanatory diagram of an embroidery frame fixing device according to the present invention.
FIG. 6 is an explanatory view of a conventional embroidery frame fixing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Embroidery outer frame 1a Frame part 1b Mounting part 2 Guide pin 3 Frame fixing pin 4 Spring 5 E ring 6 Mounting knob 7 Spring 8 E ring 9 Frame fixing spring

Claims (2)

An embroidery frame for holding an embroidery cloth with an embroidery inner frame and an embroidery outer frame,
The embroidery outer frame is a frame portion for stretching an embroidery cloth between the embroidery inner frame,
An attachment portion for mounting on a carriage that is integral with the frame portion and connected to the embroidery frame driving means of the sewing machine;
The mounting portion includes a pair of guide pins for engaging and positioning in a hole provided in the carriage, and
A frame fixing pin for engaging the groove portion of the carriage and fixing the embroidery outer frame to the carriage by a pressing force of a spring;
The embroidery frame is characterized in that the attachment portion is mounted so as to be movable upward so that the guide pin does not protrude from the lower surface of the embroidery outer frame.   2. The embroidery frame according to claim 1, wherein the guide pin protrudes downward from the lower surface of the embroidery outer frame by a pressure of a spring that is loosely fitted to the guide pin.

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