TWI784201B - Embroidery frame - Google Patents

Abstract

An embroidery frame, which has: a frame-shaped inner frame; an outer frame with a first end and a second end facing each other, and clamping an object to be sewn from the outside of the aforementioned inner frame; and The fastening unit adjusts the distance between the first end and the second end; the fastening unit has: a connecting shaft, the direction in which the distance between the first end and the second end changes as the axis direction; the operating member is connected to the aforementioned connecting shaft and adjusts the distance between the aforementioned first end portion and the aforementioned second end portion by pushing the aforementioned first end portion or the second end portion; the elastic body passes through The push of the operation member expands and contracts in the axial direction of the communication shaft, and pushes the first end toward the second end; The compressed length of the elastomer.

Description

embroidery frame

The present invention relates to an embroidery frame installed on a sewing machine with embroidery function, in particular to an embroidery frame which can easily adjust the fastening pressure when clamping a sewed object between the inner frame and the outer frame of the embroidery frame.

Conventionally, there is known an embroidery frame device for a sewing machine. The embroidery frame has an outer frame formed so that both ends face each other, and an inner frame formed so as to fit inside the outer frame, and will be sewn. The object is clamped and held between the aforementioned inner frame and the aforementioned outer frame; the embroidery frame device of the sewing machine is equipped with: an operating member arranged to enable the end of the aforementioned outer frame to move between the object to be sewn and the aforementioned inner frame The position of clamping and holding together, and the mode between the position of clamping and releasing; and the interval adjustment member, through the operation of the aforementioned operating member to adjust the clamping and holding of the sewing object in the aforementioned outer frame and The distance between the two ends of the outer frame in the state of the inner frame can be adjusted according to the thickness of the object to be sewn through the distance adjusting member (refer to Patent Document 1).

However, in the embroidery frame device described in the aforementioned Patent Document 1, when the sewing object is clamped between the outer frame and the inner frame, it cannot be confirmed whether the fastening pressure for clamping the sewing object is appropriate. For this problem, there is known an embroidery frame, which is provided with: an outer frame, which has a side divided in a manner that can freely change the inner area; an inner frame, which fixes the processed cloth to the outer frame; The divided side of the frame can adjust the fastening amount of the processed cloth; and the fastened scale can be used to adjust the fastening thread to the fastening position corresponding to the cloth thickness of the processed cloth. Through the lower end of the fastening thread and the fastening The fixed scale is matched so that the embroidery frame can have an appropriate tension that meets the cloth thickness of the processed cloth (refer to Patent Document 2).

Moreover, regarding the aforementioned subject, there is also known an embroidery frame which has: an outer frame; an inner frame embedded in the outer frame and capable of clamping a processed cloth between the outer frame and the outer frame; and a fastening mechanism for Fasten the aforementioned outer frame to the inner frame; and install a pressure detector so that users can easily judge whether the pressure for clamping the processed cloth is appropriate or not. The pressure detector is set on the aforementioned embroidery frame, and by using the aforementioned fastening The outer frame is tightened to detect the pressure acting on the inner peripheral surface of the outer frame and the outer peripheral surface of the inner frame to hold the processed cloth (see Patent Document 3). [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2008-279184 [Patent Document 2] Japanese Utility Model Publication No. 7-15793 [Patent Document 3] Japanese Patent Laid-Open No. 2015-62560

[Problem to be solved by the invention]

However, in the embroidery frame described in the aforementioned Patent Document 2, although the distance between the divided sides can be adjusted according to the thickness of the processed cloth to be used, since the physical properties (elasticity, etc.) of the processed cloth are not taken into consideration, there will be Even if the thickness of the processed cloth does not correspond properly to the cloth thickness of the fastening scale due to the physical properties of the processed cloth, or unexpected pressure is applied to the cloth, problems cannot be confirmed. Furthermore, in the embroidery frame described in the aforementioned Patent Document 3, there is a problem that size and cost are increased due to the wiring of the pressure detector and the like.

The present invention aims to solve the above-mentioned problems, and aims to provide an embroidery frame which can be easily realized by confirming whether the fastening pressure is appropriate when the object to be sewn is clamped between the inner frame and the outer frame of the embroidery frame. Adjust tightening pressure. [Means to solve the problem]

In order to solve the above-mentioned problems, the present invention adopts the following configurations for the embroidery frame: an embroidery frame comprising: a frame-shaped inner frame; and an outer frame having first ends facing each other and the second end, and clamp the sewn object from the outside of the aforementioned inner frame; and a fastening unit, which adjusts the interval between the aforementioned first end and the second end; the aforementioned fastening unit has: a connecting shaft, The direction in which the distance between the first end and the second end changes is taken as the axis direction; the operation member is connected to the communication shaft and adjusted by pressing the first end or the second end. The space between the first end and the second end; the elastic body expands and contracts in the axial direction of the communication shaft by being pressed by the operation member, and moves the first end toward the second end pushing; and a pressure control member for controlling the compressed length of the elastic body due to the pushing of the operation member.

As far as the embodiment of the embroidery frame of the present invention is concerned, the above-mentioned operating member is configured to be arranged on the opposite side of the facing surface of the first end portion of the aforementioned connecting shaft; and the following configuration is adopted: the aforementioned connecting shaft system It has a first longitudinal axis perpendicular to the communication axis on the first end side; the aforementioned operating member has cam surfaces with different distances from the axis center of the aforementioned first longitudinal axis; the aforementioned operating member uses the aforementioned first longitudinal axis to 1 Rotate around the longitudinal axis to push the aforementioned elastic body.

As far as the specific embodiment of the embroidery frame of the present invention is concerned, the following configuration is adopted: the aforementioned operating member has an operating threaded portion screwed with the aforementioned communicating shaft, and the aforementioned operating member moves along the axial direction of the aforementioned communicating shaft. The above-mentioned operating threaded portion pushes the above-mentioned elastic body; moreover, the following structure is adopted: the above-mentioned connecting shaft has a second longitudinal axis perpendicular to the above-mentioned connecting shaft on the second end side, and further has a thickness adjusting portion, The thickness adjusting part has cam surfaces with different distances from the axis of the second longitudinal axis, and pushes the second end toward the first end by rotating around the second longitudinal axis. pressure; again, the following configuration is adopted: the aforementioned first end has a first through hole passing through the aforementioned communication shaft and a housing recess for accommodating the aforementioned elastic body, and the aforementioned second end has a second through hole passing through the aforementioned communication shaft. The hole; the aforementioned pressure grasping member is arranged between the aforementioned elastic body and the operating member; the aforementioned first end portion has a position confirming portion for confirming the position of the aforementioned pressure grasping member; the aforementioned pressure grasping member is interposed The said position confirming part is the structure of the identification mark which recognizes whether the pressure of the said elastic body is appropriate. [Effect of Invention]

The embroidery frame of the present invention is provided with: a connecting shaft, the direction in which the distance between the first end and the second end of the outer frame changes as the axial direction; The first end or the second end pushes to adjust the distance between the first end and the second end; the elastic body expands and contracts in the axial direction of the connecting shaft through the pushing of the operating member, and The first end portion is pushed toward the second end portion side; and the pressure control member grasps the compressed length of the elastic body due to the push of the operation member, whereby it is possible to confirm whether the fastening pressure is appropriate, and The object to be sewn can be clamped between the inner frame and the outer frame through proper fastening pressure.

Moreover, in the embroidery frame of the present invention, the aforementioned connecting shaft system has a second longitudinal axis perpendicular to the aforementioned communicating shaft at the second end side, and further includes a thickness adjusting portion, and the thickness adjusting portion is formed from the aforementioned second The center of the longitudinal axis is a cam surface with different distances, and by rotating around the second longitudinal axis, the second end is pushed toward the first end, so that it can be clamped accordingly Adjust the fastening pressure appropriately according to the thickness of the sewn object between the inner frame and the outer frame.

Next, an embroidery frame according to an embodiment of the present invention will be described with reference to the drawings shown in the examples. In addition, in the following description, looking at the perspective view of FIG. 1 , the vertical direction is referred to as "up and down", the direction from the lower right to the upper left is referred to as "front and rear", and the direction from the lower left to the upper right is referred to as "left and right". [Example]

In Fig. 1, A is an embroidery frame used when sewing embroidery patterns with a sewing machine with an embroidery function or an embroidery sewing machine such as an automatic embroidery machine. The embroidery frame A is equipped with: a frame-shaped inner frame B; an outer frame C , having the first end portion C1 and the second end portion C2 facing each other, and clamping the cloth F of the sewn object from the outside of the aforementioned inner frame B; and adjusting the aforementioned first end portion C1 and the second end portion C2. The fastening unit D for the interval S of the second end portion C2.

The inner frame B is equipped with an inner frame body 1 formed in a rectangular shape such as a substantially rectangular shape or a substantially square shape in plan view, and composed of four sides formed to hold the outer shape of the cloth F. . In addition, the shape of the inner frame body 1 is not limited to a rectangular shape, and may be circular or elliptical.

The outer frame C is provided with: an outer frame body 10 corresponding to the outer shape of the inner frame body 1 of the inner frame B, and consisting of a front edge 10a and a left side 10b formed to hold the inner shape of the cloth F between the inner frame body 1 and the inner frame body 1. , the back side 10c, and the four sides of the right side 10d; Also, the attachment part E is detachably attached to a moving body (not shown) of the embroidery sewing machine which moves in the X-Y direction synchronously with the vertically moving needle of the sewing machine body. Furthermore, at the inner lower ends of the front side 10a, the left side 10b, the rear side 10c, and the right side 10d of the aforementioned outer frame body 10, ribs 11 for setting the lower position of the inner frame B are respectively formed towards the inside.

As shown in FIG. 2, the outer frame C is divided into a first end C1 and a second end C2 at the center of the front side 10a of the outer frame body 10, and protrusions are formed on the first end C1 and the second end C2 respectively. The first block 12 and the second block 13 in front. The first block 12 has a first opposing surface 12a opposite to the second block 13, and a first opposite surface 12b on the opposite side of the first opposing surface 12a; the second block 13 has a 12, the second opposing surface 13a facing to each other, and the second opposing surface 13b on the opposite side to the second opposing surface 13a.

As shown in FIG. 2, in the second block 13, a guide protrusion 14 is formed on the second opposite surface 13b. In the first block 12 and the second block 13, the front side 10a of the outer frame 10 A first through hole 15 penetrating the first opposing surface 12a from the first opposing surface 12b and a second through hole 16 penetrating the second opposing surface 13a from the second opposing surface 13b are formed parallel to the longitudinal direction of the first opposing surface 12b. Moreover, in the first block 12, a receiving recess 17 is formed along the first through hole 15 from the first opposite surface 12b, and an observation window 18 is formed in a direction perpendicular to the receiving recess 17. The observation window 18 is Location Confirmation Department.

As shown in Figures 3 and 4, the fastening unit D is equipped with a connecting shaft 20, an operating rod 22, a detection spring 21, a pressure control member 23, and a cloth thickness adjusting cam (cam) 24, and the connecting shaft 20 passes through the first block. The first through hole 15 of the body 12 and the second through hole 16 of the second block body 13, and the direction in which the distance between the first end C1 and the second end C2 of the outer frame C will change is taken as the axial direction; 22 is connected to the communication shaft 20, and the operation of adjusting the distance S between the first end C1 and the second end C2 by pressing the first opposite surface 12b of the first block 12 Member; the detection spring 21 expands and contracts in the axial direction around the communication shaft 20 by being pushed by the operating lever 22, and is accommodated in order to push the first end C1 toward the second end C2. The elastic body in the receiving recess 17 of the first block 12; the pressure control member 23 is to grasp the compression length of the detection spring 21 caused by the pushing of the operation rod 22; the cloth thickness adjustment cam 24 is connected to the aforementioned The thickness adjustment part communicates with the shaft 20 and adjusts the distance S between the first end C1 and the second end C2 by pressing the second opposite surface 13 b of the second block 13 .

As shown in FIG. 8 , the pressure control member 23 has a front end portion 23 a inserted into the receiving recess 17 , a flange portion 23 b expanding outward from the rear end edge of the front end portion 23 a , and is disposed on the communication shaft 20 . Between the detection spring 21 and the aforementioned operating rod 22 . As shown in FIG. 4, a first threaded portion 25 screwed into the first end portion C1 side and a second threaded portion screwed into the second end portion C2 side are formed at both ends of the communicating shaft 20. 26. The first threaded portion 25 is connected with a first vertical shaft 27 which is threaded perpendicularly to the communication shaft 20 , and the second threaded portion 26 is connected with a second vertical shaft 28 which is threaded perpendicularly with the communication shaft 20 . And, the 1st vertical axis 27 and the 2nd vertical axis 28 are connected so that they may be parallel to each other.

As shown in FIG. 5 , the operating lever 22 is rotatably attached to the first vertical shaft 27 , and the cloth thickness adjustment cam 24 is rotatably attached to the second vertical shaft 28 . The operating lever 22 has a lever portion 22 a for putting a finger on to rotate about the first longitudinal axis 27 , and an operating cam surface 30 at different distances from the center of the first longitudinal axis 27 . In addition, as shown in FIG. 6( a ), the cloth thickness adjusting cam 24 has an adjusting cam surface 31 which, when rotating around the second longitudinal axis 28 , changes to count from the axis center of the second longitudinal axis 28 . It is different distances from A to D to correspond to the cloth thickness of cloth F. And, as shown in FIG. 4 , the cloth thickness adjusting cam 24 has a guide recess 32 that can slide along the guide protrusion 14 formed on the second opposite surface 13 b of the second block 13 .

Next, descriptions will be given on the usage and effects of this embodiment. First of all, to install the cloth F on the embroidery frame A of this embodiment, it is necessary to set the first end C1 of the outer frame C by setting the operating lever 22 to the state shown in Fig. 1, Fig. 3 and Fig. 5 . A state in which the space S from the second end C2 is opened. In this state, in the state where the inner frame body 1 of the inner frame B is opened with the cloth F maintained, it is inserted from above the outer frame C to the inside of the outer frame body 10, and the lower surface of the inner frame body 1 is opened. The cloth F is pushed downward until it abuts against the convex strip 11 of the outer frame body 10 .

Afterwards, in order to adjust the fastening pressure of the outer frame C in response to the cloth thickness of the cloth F used, according to the "thin material" and "medium weight material" marked on the top of the cloth thickness adjustment cam 24 as shown in FIG. 6(b), " and "Thick Material" to select the adjustment cam surface 31 of the cloth thickness adjustment cam 24, and the selected adjustment cam surface 31 will abut against the second opposite surface 13b of the second block body 13, with the second longitudinal axis When turning the cloth thickness adjusting cam 24 around 28, the selected adjusting cam surface 31 will be in contact with the second opposite surface 13b of the second block 13, which can be adjusted by adjusting the distance between the first end C1 and the second end C2. S to adjust the fastening pressure of the outer frame C.

Then, when the rod portion 22a of the operating lever 22 is rotated toward the outer frame body 10 around the first longitudinal axis 27, the operating cam surface 30 formed on the operating lever 22 will push the first cam surface 30 from the first block 12. The pressure grasping member 23 protruding from the opposite surface 12b, thereby, the detection spring 21 pushes the first block 12, and the distance S between the first end C1 and the second end C2 of the outer frame C can be narrowed to reduce the pressure. The cloth F sandwiched between the inner side of the outer frame C and the outer side of the inner frame B is fastened.

Here, the principle of adjusting the fastening pressure of the outer frame C according to the cloth thickness through the cloth thickness adjusting cam 24 will be described. As shown in Fig. 6(a), since the distance between the adjusting cam surface 31 of the cloth thickness adjusting cam 24 and the axis center of the second longitudinal axis 28 increases sequentially in the order of A to D, when the user turns the cloth Thickness adjustment cam 24, as far as the adjustment cam surface 31 corresponding to the cloth thickness is concerned, for example, when selecting "thin material", when the outer frame C is fastened with the operating lever 22, as shown in Figure 7(a), the first end The distance S between the portion C1 and the second end portion C2 becomes smaller, and the gap between the inner frame B and the outer frame C of the sandwiched cloth F also becomes smaller. In contrast, as the adjustment cam surface 31 corresponding to the cloth thickness, when "thick material" is selected, when the outer frame C is fastened with the operating lever 22, as shown in FIG. 7(b), the first end The distance S between C1 and the second end C2 will be larger than that of the "thin material", and the gap between the inner frame B and the outer frame C that clamps the cloth F will also become larger, which can make the cloth F The tightening amount of the change, adjust the tightening pressure of the outer frame C.

However, even if the fastening pressure of the outer frame C is adjusted according to the cloth thickness through the cloth thickness adjusting cam 24 , it is impossible to simply confirm whether the actual fastening pressure is appropriate. Therefore, in the present invention, any one between the operation rod 22 and the first end C1 or between the cloth thickness adjustment cam 24 and the second end C2 is used as a detection mechanism for the fastening pressure. When the detection spring 21 and the pressure control member 23 of the shaft 20 are tightened with the operating rod 22, the pressure control member 23 that moves through the contraction of the detection spring 21 is observed from the observation window 18, thereby confirming whether the tightening pressure is appropriate .

In this embodiment, as the detection mechanism of the fastening pressure, as shown in FIG. structure. As shown in FIG. 8, when the rod portion 22a of the operating lever 22 is rotated in the arrow direction toward the outer frame 10 with the first longitudinal axis 27 as the center, the operating cam surface 30 formed on the operating lever 22 will push The flange portion 23b of the pressure control member 23 protruding from the first opposite surface 12b of the first block 12, the pressed pressure control member 23 is pushed and accommodated in the first block 12 by the front end portion 23a. The detection spring 21 of the concave portion 17 moves leftward in the receiving concave portion 17 in response to the fastening pressure of the outer frame C.

As shown in FIG. 9 , the pressure control member 23 is formed on the first side by giving the mark n which is an identification mark on the end surface 23c or the side surface 23d of the front end portion 23a or by making a color classification p (shown in hatching) in advance. When viewed from the observation window 18 of the block 12, it is used to confirm whether the pressure is appropriate or not. Also, in the case of FIG. 9(E) and (G), the portion surrounded by a lighter dotted line shows that the end surface 23c of the front end portion 23a is used as an identification mark, and there is no actual member.

Next, an example of a method of checking the tightening pressure through the observation window 18 will be described. The first confirmation method is as shown in FIG. 10 , marking the scale m around the rectangular observation window 18 at predetermined intervals, and the mark belonging to the identification mark of the end surface 23c or the side surface 23d of the pressure control member 23 can be seen through the space between the scale m. n or the dividing line of color classification p to confirm the appropriate tightening pressure. Then, as shown in FIG. 11, the second confirmation method is to provide only one scale m around the rectangular observation window 18, which can be seen between the marks n on the side surface 23d of the pressure control member 23 or between the color classification p. The position of the scale m is used to confirm the proper tightening pressure.

Furthermore, the third confirmation method is as shown in FIG. 12, by changing the mark n or the color classification p attached to the end surface 23c or side surface 23d of the pressure control member 23 that can be seen from the circular observation window 18. Appropriate tightening pressure. According to the visual situation viewed from the observation window 18, the third confirmation method can be divided into five stages of modes (A) to (E) as follows. Modes (A), (C) and (E) respectively display the state where the tightening pressure is too small, the state where the tightening pressure is appropriate, and the state where the tightening pressure is too large. Modes (B) and (D) can be set to The appropriate state can also be set to an inappropriate state, and it can be set to any state according to needs.

As a result of checking the fastening pressure through the aforementioned observation window 18 and the pressure control member 23, when it is confirmed that the fastening pressure is too small, as shown in FIG. 2 The vertical axis 28 is rotated toward the direction of "thin material" as the center, which can increase the fastening pressure of the outer frame C. Conversely, when it is confirmed that the fastening pressure is too high, the fastening pressure of the outer frame C can be reduced by turning the cloth thickness adjustment cam 24 in the direction of "heavy material" around the second vertical axis 28 .

In this embodiment, although the operating lever 22 that rotates around the first longitudinal axis 27 and has an operating cam surface 30 at different distances from the center of the first longitudinal axis 27 is used as the operating member, it can also be omitted. The first longitudinal shaft 27 and the operating rod 22 adopt a threaded operating member. The threaded operating member has an operating threaded portion screwed with the first threaded portion 25 of the communicating shaft 20, and rotates the operating threaded portion on the shaft. direction to push the pressure grasping member 23. In the case of using the above-mentioned threaded operating member, the cloth thickness adjusting cam 24 can be omitted, and the outer frame C can be adjusted in a manner of confirming that the tightening pressure is appropriate while viewing the aforementioned observation window 18 by only rotating the threaded operating member. tightening pressure. Also, in the present embodiment, although the operating member such as the aforementioned operating rod 22 or the aforementioned operating threaded portion is arranged on the first end C1 side, it is also possible to arrange the operating member on the second end C2 side to press the second end. end C2. Even in this case, the pressure can be grasped from the compressed length of the elastic body in contact with the first end portion C1. [Possibility of industrial use]

The embroidery frame of the present invention confirms whether the fastening pressure when clamping the sewn object between the inner frame and the outer frame is appropriate by using the position confirmation part and the pressure control member, and can clamp the sewn object with an appropriate fastening pressure , can be widely applied and is beneficial to embroidery sewing machines such as sewing machines with embroidery functions or automatic embroidery machines.

A: embroidery frame B: inner frame C: Outer frame C1: 1st end C2: the second end D: fastening unit E: Installation department F: Cloth (to be sewn) S: Interval m: scale n: mark (identification mark) p: color classification (identification mark) 1: Inner frame 10: Outer frame 10a: front 10b: left 10c: behind 10d: right 11: convex strip 12: The first block 12a: The first opposite surface 12b: Opposite side of 1st 13: The second block 13a: The second opposite surface 13b: The second opposite side 14: Guide convex part 15: 1st through hole 16: Second through hole 17: Storage recess 18: Observation window (position confirmation part) 20: connecting shaft 21: Detection spring (elastomer) 22: Operating lever (operating member) 22a: stem 23: Pressure Control Components 23a: front end 23b: flange part 23c: end face 23d: side 24: Cloth thickness adjustment cam (thickness adjustment part) 25: 1st threaded part 26: 2nd thread part 27: 1st vertical axis 28: Second vertical axis 30: Operation cam surface 31: Adjusting the cam surface 32: Guide recess

Fig. 1 is an overall perspective view showing the appearance of an embroidery frame related to an embodiment of the present invention. Fig. 2 is a diagram showing the main parts of the embroidery frame outer frame related to the embodiment of the present invention; Fig. 2(a) is a top view, and Fig. 2(b) is a perspective view. FIG. 3 is an enlarged perspective view showing the fastening unit in FIG. 1 . Fig. 4 is an exploded perspective view showing the fastening unit of the embroidery frame related to the embodiment of the present invention. Fig. 5 is a top view showing the fastening unit of the embroidery frame related to the embodiment of the present invention. Fig. 6 is a diagram showing the cloth thickness adjusting cam of the embroidery frame related to the embodiment of the present invention; Fig. 6(a) is an explanatory diagram of the cam surface, and Fig. 6(b) is a top view. Fig. 7 is a schematic diagram illustrating the adjustment principle of the fastening pressure caused by the cloth thickness adjustment cam of the embroidery frame of the embodiment of the present invention; Fig. 7 (a) is a schematic diagram of the case of "thin material", Fig. It is a model diagram of "thick material". Fig. 8 is a diagram showing the detection mechanism of the fastening pressure of the embroidery frame related to the embodiment of the present invention; Fig. 8(a) is a sectional view of the released state, and Fig. 8(b) is a sectional view of the fastened state. Fig. 9 is a side view showing the identification mark of the pressure control member of the embroidery frame related to the embodiment of the present invention. Fig. 10 is a schematic diagram showing the first confirmation method of the tightening pressure of the embroidery frame related to the embodiment of the present invention. Fig. 11 is a schematic diagram showing a second confirmation method of the tightening pressure of the embroidery frame related to the embodiment of the present invention. Fig. 12 is a schematic diagram showing a third confirmation method of the tightening pressure of the embroidery frame according to the embodiment of the present invention.

C: Outer frame

C1: 1st end

C2: the second end

D: fastening unit

S: Interval

10: Outer frame

10a: front

12: The first block

13: The second block

14: Guide convex part

15: 1st through hole

16: Second through hole

18: Observation window (position confirmation part)

20: connecting shaft

21: Detection spring (elastomer)

22: Operating lever (operating member)

22a: stem

23: Pressure Control Components

23a: front end

23b: flange part

24: Cloth thickness adjustment cam (thickness adjustment part)

25: 1st threaded part

26: 2nd thread part

27: 1st vertical axis

28: Second vertical axis

30: Operation cam surface

31: Adjusting the cam surface

32: Guide recess

Claims (23)

An embroidery frame comprising: a frame-shaped inner frame; an outer frame having a first end and a second end facing with respective opposing faces, and clamping a sewed object from the outer side of the inner frame; and a fastening unit for adjusting the distance between the aforementioned first end portion and the second end portion, The fastening unit has: a connecting shaft whose axial direction is a direction in which the distance between the first end and the second end changes; an operating member connected to the connecting shaft and or the second end to adjust the distance between the first end and the second end; the elastic body expands and contracts in the axial direction of the connecting shaft through the pushing of the operating member, and moves the first The first end pushes toward the second end; and a pressure grasping member grasps the compressed length of the elastic body due to the pushing of the operating member. Such as the embroidery frame of claim 1, wherein The operation member is disposed on a side of the communicating shaft opposite to a facing surface of the first end portion. Such as the embroidery frame of claim 1, wherein The communication shaft system has a first longitudinal axis perpendicular to the communication shaft on the first end side, The aforementioned operating member has cam surfaces with different distances from the axis center of the aforementioned first longitudinal axis, The operation member presses the elastic body by rotating about the first vertical axis. Such as the embroidery frame of claim 2, wherein The communication shaft system has a first longitudinal axis perpendicular to the communication shaft on the first end side, The aforementioned operating member has cam surfaces with different distances from the axis center of the aforementioned first longitudinal axis, The operation member presses the elastic body by rotating about the first vertical axis. Such as the embroidery frame of claim 1, wherein The aforementioned operating member has an operating threaded portion screwed with the aforementioned connecting shaft, The operation member pushes the elastic body by moving the operation screw portion in the axial direction of the communication shaft. Such as the embroidery frame of claim 2, wherein The aforementioned operating member has an operating threaded portion screwed with the aforementioned connecting shaft, The operation member pushes the elastic body by moving the operation screw portion in the axial direction of the communication shaft. The embroidery frame according to any one of claims 1 to 6, wherein The communication shaft system has a second longitudinal axis perpendicular to the communication shaft on the second end side, Furthermore, a thickness adjusting part is provided, and the thickness adjusting part has cam surfaces with different distances from the axis center of the second longitudinal axis, and the second end part is moved to the center by rotating around the second longitudinal axis. The aforementioned first end side is pressed. The embroidery frame according to any one of claims 1 to 6, wherein The first end portion has a first through hole passing through the communicating shaft and a housing recess for housing the elastic body, The second end portion has a second through hole passing through the communication shaft. Such as the embroidery frame of claim item 7, wherein The first end portion has a first through hole passing through the communicating shaft and a housing recess for housing the elastic body, The second end portion has a second through hole passing through the communication shaft. Such as the embroidery frame of claim 8, wherein The pressure grasping member is disposed between the elastic body and the operation member. Such as the embroidery frame of claim item 9, wherein The pressure grasping member is disposed between the elastic body and the operation member. The embroidery frame according to any one of claims 1 to 6, wherein The first end portion has a position confirming portion for confirming the position of the pressure grasping member. Such as the embroidery frame of claim item 7, wherein The first end portion has a position confirming portion for confirming the position of the pressure grasping member. Such as the embroidery frame of claim 8, wherein The first end portion has a position confirming portion for confirming the position of the pressure grasping member. Such as the embroidery frame of claim item 9, wherein The first end portion has a position confirming portion for confirming the position of the pressure grasping member. Such as the embroidery frame of claim item 10, wherein The first end portion has a position confirming portion for confirming the position of the pressure grasping member. Such as the embroidery frame of claim 11, wherein The first end portion has a position confirming portion for confirming the position of the pressure grasping member. Such as the embroidery frame of claim 12, wherein The pressure control member has an identification mark for identifying whether the pressure of the elastic body is appropriate through the position confirmation part. Such as the embroidery frame of claim 13, wherein The pressure control member has an identification mark for identifying whether the pressure of the elastic body is appropriate through the position confirmation part. Such as the embroidery frame of claim 14, wherein The pressure control member has an identification mark for identifying whether the pressure of the elastic body is appropriate through the position confirmation part. Such as the embroidery frame of claim 15, wherein The pressure control member has an identification mark for identifying whether the pressure of the elastic body is appropriate through the position confirmation part. Such as the embroidery frame of claim 16, wherein The pressure control member has an identification mark for identifying whether the pressure of the elastic body is appropriate through the position confirmation part. Such as the embroidery frame of claim 17, wherein The pressure control member has an identification mark for identifying whether the pressure of the elastic body is appropriate through the position confirmation part.

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