CN210458560U - Assisting mechanism is lifted to sewing machine's knee - Google Patents
Assisting mechanism is lifted to sewing machine's knee Download PDFInfo
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- CN210458560U CN210458560U CN201921338397.XU CN201921338397U CN210458560U CN 210458560 U CN210458560 U CN 210458560U CN 201921338397 U CN201921338397 U CN 201921338397U CN 210458560 U CN210458560 U CN 210458560U
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Abstract
The utility model provides a power assisting mechanism is lifted to sewing machine's knee belongs to sewing machine technical field. The technical problem that the sewing machine is labor-consuming in presser foot lifting is solved. The sewing machine comprises a presser foot lifting and lifting assembly and a knee control lifting assembly; the knee-controlled lifting assembly comprises an extension shaft and a knee leaning disc capable of driving the extension shaft to rotate, and the presser foot lifting and lifting assembly comprises a presser foot lifting connecting rod capable of driving the presser foot to lift and lower; the power assisting mechanism comprises a lifting electromagnet and an inductor, wherein an induction sheet corresponding to the inductor is fixedly arranged on an extension shaft, and the inductor and the lifting electromagnet are electrically connected with a controller of the sewing machine; the lifting electromagnet is positioned below the lifting and pressing connecting rod and can drive the lifting and pressing connecting rod to swing up and down, and the extension shaft is provided with a return spring. This assist drive device is lifted to knee can drive and lift the motion of pressing connecting rod to lift the presser foot, the operator only need make out to overcome reset spring's external force and make the inductor response after trigger lift the action of piezoelectric magnet, it is more laborsaving, and when lifting the presser foot, forbid main motor motion, the security is high.
Description
Technical Field
The utility model belongs to the technical field of sewing machine, a assist drive device is lifted to sewing machine's knee is related to.
Background
At present, most industrial sewing machines are used for manually lifting a presser foot, a knee lifting rod is hinged on a lever, the work of lifting the presser foot is realized by acting the knee of an operator on the knee lifting rod, sometimes, the operator exerts force on the knee for a long time, and the knee is damaged in the year over the month.
Chinese patent (publication number: CN 109825962A; publication date: 2019-05-31) discloses an electronic knee backrest structure, which comprises an oil pan, a pressure foot lifting and jacking cap, a sensor bracket, a mounting screw, a sensor, an induction magnet, a first nut, a pressure foot lifting crank, a rotating shaft, a fixed crank, a knee backrest disc assembly and a second nut, wherein the sensor is mounted on the sensor bracket; the sensor bracket is fixed on the oil pan through a mounting screw and a second nut; the oil disc is provided with a through hole, and the pressure foot lifting top cap is inserted into the through hole of the oil disc; a step is arranged on the lower side of the presser foot lifting top cap, the lower end of the step is provided with a thread, the induction magnet penetrates through the presser foot lifting top cap, one side of the induction magnet is limited by the step, and the other side of the induction magnet is locked by a first nut and the thread; the presser foot lifting crank is arranged below the presser foot lifting top cap and is fixed on the rotating shaft; the knee backrest plate component is connected and fixed on the rotating shaft through a fixed crank.
The electronic knee rest structure disclosed in the above patent document controls the output of the lifting electromagnet according to the strength of the sensing signal between the sensing magnet fixed on the lifting presser foot top cap and the sensor when the lifting presser foot top cap moves upward, but the lifting electromagnet cannot completely replace the manual force to lift the presser foot, the knee strength is not well grasped, the labor-saving effect is not obvious, and the safety factor is not high under the condition of machine vibration.
Disclosure of Invention
The utility model discloses to the above-mentioned problem that prior art exists, provide a sewing machine's knee and lift assist drive device, the utility model aims to solve the technical problem that: how to make the sewing machine more labor-saving and improve the safety when lifting the presser foot.
The purpose of the utility model can be realized by the following technical proposal:
a knee lifting power-assisted mechanism of a sewing machine comprises a presser foot lifting component and a knee control lifting component; the knee-controlled lifting assembly comprises an extension shaft and a knee rest disc capable of driving the extension shaft to rotate, and the presser foot lifting and lifting assembly comprises a presser foot lifting and pressing connecting rod capable of driving a presser foot of the sewing machine to lift and fall; the knee lifting power-assisted mechanism is characterized by comprising a lifting electromagnet and an inductor, wherein an induction sheet corresponding to the inductor is fixedly arranged on the extension shaft, and the inductor and the lifting electromagnet are electrically connected with a controller of the sewing machine; the lifting electromagnet is positioned below the lifting and pressing connecting rod and can drive the lifting and pressing connecting rod to swing up and down, and the extension shaft is further provided with a return spring.
The working principle is as follows: in the knee lifting assistant mechanism in the technical scheme, when the presser foot needs to be lifted, the knee is abutted against the knee leaning disc, the knee leaning disc drives the extension shaft to rotate, the induction sheet arranged on the extension shaft also rotates along with the extension shaft, when the induction sheet cannot be detected by the inductor, the operation of the main motor is forbidden, the inductor can also transmit the signal to the controller of the sewing machine, the controller of the sewing machine can control the main motor to be forbidden to operate, at the moment, the controller of the sewing machine can control the lifting electromagnet to move, the moving lifting electromagnet can drive the lifting connecting rod to swing so as to drive the presser foot to lift, a worker only needs to make the force which is abutted against the reset spring on the knee control lifting device, the force which is needed to be used for lifting the presser foot is replaced by the lifting electromagnet, the labor is saved, when the induction sheet cannot be detected by the inductor, the main motor is forbidden to operate, and the potential safety hazard of the sewing machine during the operation of the, the safety of the sewing machine when lifting the presser foot is improved. The reset spring on the extension shaft can reset the extension shaft and the sensing piece after the knee leaves the knee leaning disc, namely after the presser foot is lowered, the sensor senses the sensing piece, and the main motor is allowed to run at the moment.
In the knee lifting power-assisted mechanism of the sewing machine, the lifting electromagnet is fixedly arranged on a shell of the sewing machine, an electromagnet cap is fixedly arranged at the upper end of an output shaft of the lifting electromagnet, the lifting presser foot lifting assembly further comprises a swinging plate capable of swinging, the middle part of the swinging plate is hinged on the shell of the sewing machine, one end of the swinging plate is hinged with one end of the lifting and pressing connecting rod, the other end of the swinging plate is provided with a lifting and pressing connecting rod roller, and the electromagnet cap is positioned under the lifting and pressing connecting rod roller and abuts against the lifting and pressing connecting rod roller. When the lifting electromagnet can work, the electromagnet cap head extends out of the upper end of the lifting electromagnet and jacks up the roller of the lifting and pressing connecting rod, so that the swinging plate swings and drives the lifting and pressing connecting rod to lift the presser foot, and labor is saved for an operator to lift the presser foot.
In the knee lifting power-assisted mechanism of the sewing machine, the sewing machine comprises an oil pan, the extension shaft is positioned below the oil pan, the inductor is fixedly arranged at the bottom of the oil pan, the extension shaft is fixedly provided with the knee control positioning seat, one side of the knee control positioning seat is provided with a positioning part which is turned upwards, and the bottom of the oil pan is provided with an abutting inclined plane; the upper end of the positioning part is provided with an abutting plane which is used for abutting against the abutting inclined plane; and the knee control positioning seat is also in threaded connection with a locking screw for locking the knee control positioning seat. The arrangement of the knee control positioning seat and the abutting inclined plane can position the position of the knee abutting disc below the oil disc of the sewing machine; the induction sheet range can be induced by the inductor, so that the knee lifting assisting mechanism can exert the maximum effect, and the safe operation of the sewing machine is guaranteed.
In foretell sewing machine's knee is lifted assist drive device, the bottom of food tray has set firmly the response mounting panel, response mounting panel one end is passed through set screw and is connected the bottom surface of food tray, the inductor sets firmly the other end bottom surface of response mounting panel, the response piece is located the below of response mounting panel, the one end fastening cover of response piece is established on the extension shaft, the other end of response piece outwards extends to under the inductor. The inductor is installed on the response mounting panel, avoids often dismantling the inductor and overhauls, damages the food tray, and this knee is lifted assist drive and is utilized the spare part of many sewing machines itself to operate, for example sets firmly the response piece on the protruding axle, thinks about ingeniously, reforms transform fewly to equipment itself, sparingly reforms transform the cost.
In the knee lifting power-assisting mechanism of the sewing machine, a first mounting seat and a second mounting seat are arranged at the bottom of the oil disc at intervals along the length direction of the extension shaft, the first mounting seat is provided with a first mounting hole, the lower end of the first mounting seat is provided with a first strip-shaped hole communicated with the first mounting hole, the second mounting seat is provided with a second mounting hole, the lower end of the second mounting seat is provided with a second strip-shaped hole communicated with the second mounting hole, the extension shaft penetrates through the first mounting hole and the second mounting hole, two ends of the knee control positioning seat are provided with connecting plates, the connecting plates are sleeved on the extension shaft, the second mounting seat is positioned between the two connecting plates, and the end part of the locking screw penetrates through the second strip-shaped hole and abuts against the outer peripheral surface of the extension shaft; the reset spring is a torsion spring, and the reset spring is sleeved on the extension shaft and is located between the first mounting seat and the second mounting seat. The knee control positioning seat is locked with the extending shaft through the locking screw, so that the position of the knee control positioning seat can be conveniently adjusted, the induction range between the inductor and the induction sheet can be adjusted according to implementation conditions, and the application range is wide.
In the knee lifting power-assisted mechanism of the sewing machine, one end of the swinging plate, which is provided with the lifting and pressing connecting rod roller, is connected with the vertical knee-controlled lifting rod, the other side of the knee-controlled positioning seat is connected with the vertical ejector head, the upper end of the ejector head is provided with the buffer hole, and the lower end of the knee-controlled lifting rod is positioned in the buffer hole of the ejector head. Set up the buffer hole in the top, can avoid because of the vibrations of machine, rock, lead to knee accuse lift rod to rise the jack-up and lift and press the connecting rod, wrong operation appears.
In the knee lifting assisting mechanism of the sewing machine, the end part of the extension shaft is fixedly provided with a connecting block, and the knee leaning disc is connected with the connecting block through a connecting rod. The knee leaning disc is connected with the connecting block of the extending shaft through the connecting rod, and the normal operation of the presser foot lifting of the sewing machine is guaranteed.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model discloses in lift the setting of piezoelectric magnet, inductor and response piece, not only make the operator more laborsaving when lifting the presser foot, still improved the security when lifting the presser foot.
2. The utility model discloses well knee accuse positioning seat and food tray bottom support and lean on the setting on inclined plane, can adjust the response scope of inductor and response piece.
3. The utility model discloses the setting of buffer hole on the well top avoids rocking the action that appears lifting the presser foot because of the vibrations of machine, provides the guarantee for sewing machine normal work, makes the security when lifting the presser foot obtain improving.
Drawings
Fig. 1 is a schematic structural view of the knee lifting assist mechanism in an installation and use state.
Fig. 2 is a schematic perspective view of the knee lifting assist mechanism.
Fig. 3 is a partial structural schematic view of the knee lifting assist mechanism.
FIG. 4 is a schematic view of a connection structure of a top and a knee control lifting rod in the knee lifting power-assisted mechanism.
Fig. 5 is a schematic control flow diagram related to the knee lifting assist mechanism.
In the figure, 1, a presser foot lifting assembly is lifted; 1a, lifting and pressing a connecting rod; 1b, a swing plate; 1c, lifting and pressing the connecting rod roller; 2. a knee-controlled lifting assembly; 21. an extension shaft; 22. a knee rest plate; 23. a return spring; 24. a knee-controlled lifting bar; 25. connecting blocks; 26. a connecting rod; 3. lifting the electromagnet; 31. an electromagnet cap head; 4. an inductor; 5. an induction sheet; 6. an oil pan; 61. abutting against the inclined surface; 62. a first mounting seat; 62a and a first mounting hole; 62b, a strip-shaped hole I; 63. a second mounting seat; 63a and a second mounting hole; 63b and a strip-shaped hole II; 7. a knee control positioning seat; 71. a positioning part; 71a, an abutment plane; 72. a connecting plate; 8. locking the screw; 9. an induction mounting plate; 10. a set screw; 11. ejecting the head; 11a, buffer holes.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the sewing machine comprises a presser foot lifting assembly 1, a knee control lifting assembly 2 and an oil disc 6, wherein the presser foot lifting assembly 1 comprises an extension shaft 21 and a knee rest disc 22, a connecting block 25 is fixedly arranged at the end part of the extension shaft 21, a connecting rod 26 is fixedly arranged on the knee rest disc 22, the end part of the connecting rod 26 is inserted into the connecting block 25 and fixedly connected with the connecting block 25, and the knee rest disc 22 can drive the extension shaft 21 to rotate; the knee lifting power-assisted mechanism comprises a lifting electromagnet 3 and an inductor 4 which are fixedly arranged on a sewing machine shell, an induction sheet 5 corresponding to the inductor 4 is fixedly arranged on an extension shaft 21, the lifting electromagnet 3 and the inductor 4 are both electrically connected with a controller of the sewing machine, an electromagnet cap head 31 is fixedly arranged at the upper end of an output shaft of the lifting electromagnet 3, and a presser foot lifting component 1 comprises a lifting connecting rod 1a and a swinging plate 1b which can drive a presser foot of the sewing machine to lift; the middle part of the swinging plate 1b is hinged on a shell of the sewing machine, one end of the swinging plate 1b is hinged with one end of the lifting and pressing connecting rod 1a, the other end of the swinging plate is provided with a lifting and pressing connecting rod roller 1c, the electromagnet cap head 31 is positioned under the lifting and pressing connecting rod roller 1c, and the lower side surface of the lifting and pressing connecting rod roller 1c is connected with the upper end of the electromagnet cap head 31.
Further, as shown in fig. 2 and 3, the extension shaft 21 is located below the oil pan 6, the bottom of the oil pan 6 is fixedly provided with the sensing mounting plate 9, one end of the sensing mounting plate 9 is connected to the bottom surface of the oil pan 6 through the fixing screw 10, the sensor 4 is fixedly arranged on the bottom surface of the other end of the sensing mounting plate 9, the sensing piece 5 is located below the sensing mounting plate 9, one end of the sensing piece 5 is tightly sleeved on the extension shaft 21, and the other end of the sensing piece extends outwards to a position right below the sensor 4.
Further, as shown in fig. 2, 3 and 4, the bottom of the oil pan 6 is provided with a first mounting seat 62 and a second mounting seat 63 at intervals along the length direction of the extension shaft 21, the first mounting seat 62 is provided with a first mounting hole 62a, the lower end of the first mounting seat is provided with a first strip-shaped hole 62b communicated with the first mounting hole 62a, the second mounting seat 63 is provided with a second mounting hole 63a, the lower end of the second mounting seat is provided with a second strip-shaped hole 63b communicated with the second mounting hole 63a, the extension shaft 21 passes through the first mounting hole 62a and the second mounting hole 63a, the extension shaft 21 is provided with a knee control positioning seat 7, two ends of the knee control positioning seat 7 are provided with connecting plates 72, each connecting plate 72 is sleeved on the extension shaft 21, the second mounting seat 63 is located between the two connecting plates 72 of the knee control positioning seat 7, the knee control positioning seat 7 is screwed with a locking screw 8, the end of the locking screw 8 passes through the second strip-shaped hole 63b, one side of knee accuse positioning seat 7 is equipped with the location portion 71 that turns over up, the upper end of location portion 71 is equipped with butt plane 71a, the bottom of food tray 6 is equipped with and is used for leaning on the inclined plane 61 that leans on of butt plane 71a, the opposite side of knee accuse positioning seat 7 is equipped with vertical top 11, the upper end of top 11 is equipped with buffer hole 11a, the one end that swing board 1b is connected with to lift and press connecting rod roller 1c is connected with vertical knee accuse lift bar 24, the lower extreme of knee accuse lift bar 24 is located the buffer hole 11a of top 11, still be equipped with reset spring 23 on the projecting shaft 21, reset spring 23 is located between mount pad one 62 and the mount pad two 63, reset spring 23 is the torsional spring.
As shown in the figure 5, when the knee lifting power-assisted mechanism is used, the knee is abutted against the knee leaning disc 22, the extension shaft 21 swings, the induction sheet 5 is far away from the inductor 4, the inductor 4 cannot detect the induction sheet 5, the main motor prohibits the movement, the inductor 4 also transmits a signal to the sewing machine controller, the controller can control the lifting electromagnet 3 to move, the electromagnet cap head 31 jacks up the swinging plate 1b to swing to drive the lifting and pressing connecting rod 1a to move, thereby lifting the presser foot, wherein the knee control positioning seat 7 drives the top head 11 to move, the knee lifting power-assisted mechanism can assist the existing sewing machine to lift the presser foot, the labor is saved, or when the knee-control positioning seat 7 drives the top 11 to move but the top 11 is not contacted with the knee-control lifting rod 24, the knee-lifting power-assisted mechanism completes the action of lifting the presser foot, thus, the operator only needs to make the force which is propped against the return spring 23 on the knee-controlled lifting component 2, and the force which needs to be used for lifting and pressing can be replaced by the lifting electromagnet 3.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. A knee lifting power-assisted mechanism of a sewing machine comprises a presser foot lifting component (1) and a knee control lifting component (2); the knee-controlled lifting assembly (2) comprises an extension shaft (21) and a knee rest disc (22) capable of driving the extension shaft (21) to rotate, and the presser foot lifting assembly (1) comprises a presser foot lifting connecting rod (1a) capable of driving a presser foot of a sewing machine to lift; the knee lifting power-assisted mechanism is characterized by comprising a lifting electromagnet (3) and an inductor (4), wherein an induction sheet (5) corresponding to the inductor (4) is fixedly arranged on the extension shaft (21), and the inductor (4) and the lifting electromagnet (3) are electrically connected with a controller of the sewing machine; the pressure lifting electromagnet (3) is positioned below the pressure lifting connecting rod (1a) and can drive the pressure lifting connecting rod (1a) to swing up and down, and a return spring (23) is further arranged on the extension shaft (21).
2. The knee lifting assisting mechanism of the sewing machine according to claim 1, wherein the lifting electromagnet (3) is fixedly arranged on a machine shell of the sewing machine, an electromagnet cap (31) is fixedly arranged at the upper end of an output shaft of the lifting electromagnet (3), the lifting and pressing foot lifting assembly (1) further comprises a swinging plate (1b) capable of swinging, the middle part of the swinging plate (1b) is hinged on the machine shell of the sewing machine, one end of the swinging plate (1b) is hinged with one end of the lifting and pressing connecting rod (1a), the other end of the swinging plate (1b) is provided with a lifting and pressing connecting rod roller (1c), and the electromagnet cap (31) is positioned right below the lifting and pressing connecting rod roller (1c) and abuts against the lifting and pressing connecting rod roller.
3. The knee lifting assisting mechanism of the sewing machine according to claim 2, characterized in that the sewing machine comprises an oil pan (6), the protruding shaft (21) is positioned below the oil pan (6), the sensor (4) is fixedly arranged at the bottom of the oil pan (6), a knee control positioning seat (7) is fixedly arranged on the protruding shaft (21), one side of the knee control positioning seat (7) is provided with a positioning part (71) which is turned upwards, and the bottom of the oil pan (6) is provided with an abutting inclined surface (61); the upper end of the positioning part (71) is provided with an abutting plane (71a) for abutting against the abutting inclined surface (61); and the knee control positioning seat (7) is also in threaded connection with a locking screw (8) for locking the knee control positioning seat (7).
4. The knee lifting assisting mechanism of the sewing machine according to claim 3, wherein an induction mounting plate (9) is fixedly arranged at the bottom of the oil pan (6), one end of the induction mounting plate (9) is connected to the bottom surface of the oil pan (6) through a fixing screw (10), the inductor (4) is fixedly arranged at the bottom surface of the other end of the induction mounting plate (9), the induction sheet (5) is located below the induction mounting plate (9), one end of the induction sheet (5) is tightly sleeved on the extension shaft (21), and the other end of the induction sheet (5) extends outwards to a position right below the inductor (4).
5. The knee lift assist mechanism of a sewing machine according to claim 3 or 4, the bottom of the oil pan (6) is provided with a first mounting seat (62) and a second mounting seat (63) at intervals along the length direction of the extension shaft (21), a first mounting hole (62a) is formed in the first mounting seat (62), a second mounting hole (63a) is formed in the second mounting seat (63), a second strip-shaped hole (63b) communicated with the second mounting hole (63a) is formed in the lower end of the second mounting seat (63), the protruding shaft (21) penetrates through the first mounting hole (62a) and the second mounting hole (63a), two ends of the knee control positioning seat (7) are respectively provided with a connecting plate (72), the connecting plates (72) are sleeved on the extension shaft (21), the second mounting seat (63) is positioned between the two connecting plates (72), and the end part of the locking screw (8) penetrates through the second strip-shaped hole (63b) and abuts against the outer peripheral surface of the extension shaft (21); the reset spring (23) is a torsion spring, and the reset spring (23) is sleeved on the extension shaft (21) and is located between the first mounting seat (62) and the second mounting seat (63).
6. The knee lifting assisting mechanism of the sewing machine according to claim 5, wherein one end of the swinging plate (1b) provided with the lifting link roller (1c) is connected with a vertical knee control lifting rod (24), the other side of the knee control positioning seat (7) is connected with a vertical top head (11), the upper end of the top head (11) is provided with a buffer hole (11a), and the lower end of the knee control lifting rod (24) is positioned in the buffer hole (11a) of the top head (11).
7. The knee lift assist mechanism of a sewing machine according to claim 6, wherein a connecting block (25) is fixedly provided at an end of the protruding shaft (21), and the knee rest plate (22) is connected to the connecting block (25) through a connecting rod (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921338397.XU CN210458560U (en) | 2019-08-16 | 2019-08-16 | Assisting mechanism is lifted to sewing machine's knee |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921338397.XU CN210458560U (en) | 2019-08-16 | 2019-08-16 | Assisting mechanism is lifted to sewing machine's knee |
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| Publication Number | Publication Date |
|---|---|
| CN210458560U true CN210458560U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921338397.XU Active CN210458560U (en) | 2019-08-16 | 2019-08-16 | Assisting mechanism is lifted to sewing machine's knee |
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| Country | Link |
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| CN (1) | CN210458560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112430912A (en) * | 2020-11-13 | 2021-03-02 | 拓卡奔马机电科技有限公司 | Button sewing machine and lifting, pressing and wire shearing mechanism thereof |
-
2019
- 2019-08-16 CN CN201921338397.XU patent/CN210458560U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112430912A (en) * | 2020-11-13 | 2021-03-02 | 拓卡奔马机电科技有限公司 | Button sewing machine and lifting, pressing and wire shearing mechanism thereof |
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Address after: 317502 No.8 Jinxiu Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Meiji Technology Group Co.,Ltd. Address before: 317502 Zhongxiang Industrial Zone, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |