TWI711733B - Transmission configured structure of feed dog of sewing machine - Google Patents

Abstract

A transmission configured structure of feed dog of sewing machine. The sewing machine has a bed. The bed has a chamber. The transmission configured structure includes a micro-half-barrel body, a main delivery gear transmission mechanism, a differential delivery gear transmission mechanism, a main transfer tooth and a differential transfer tooth. The micro-half-barrel body has a cavity. The main transfer teeth include a main base, a main arm and a rear tooth. The differential transfer teeth include a differential base, a differential arm and a front tooth. The main arm and the differential arm are from the chamber into the cavity. The front tooth is corresponded to the arrangement of the rear teeth, and the front teeth and the rear teeth are received in the cavity.

Description

Transmission gear transmission configuration structure of sewing machine

The invention relates to a sewing machine technology, in particular to a transmission gear transmission configuration structure of a sewing machine.

The applicant’s own national patent certificate No. I305241 "Transfer gear transmission structure of cylindrical sewing machine" discloses that the transmission structure between the spindle and the transfer gear is set at the end of the main shaft or the periphery of the transfer table to provide the best configuration. It is suitable for the best positional relationship of sewing conditions, and provides adjustment of the transfer stroke of the front and rear transfer teeth to suit the sewing of different fabrics.

The cylindrical sewing machine of this patent can only be applied to the sewing of children's clothes and pants. Due to the limitation of the outer dimension of the semi-cylindrical member, it cannot be processed at all for younger children or baby clothes. However, the resistance of young children or babies is generally worse than that of longer children. Therefore, it is possible to provide sewing machines for the cuffs and hem of young children or infants, so as to make children or infant clothes with good warmth It is particularly important.

In view of this, the inventor of the present invention focused on the above-mentioned shortcomings of the prior art, and made great efforts to solve the above-mentioned problems, which became the goal of the present inventor's improvement.

One of the objects of the present invention is to provide a transfer gear transmission configuration structure of a sewing machine, which is able to appropriately reduce the size of the miniature half-cylinder body by arranging the various components, which can be applied to the cuffs of children's or baby clothes And sewing processing of the hem.

In order to achieve the above objective, the present invention provides a transfer gear transmission configuration structure of a sewing machine. The sewing machine includes a machine base with an accommodation space inside the machine base. The transfer gear transmission configuration structure includes a miniature half cylinder. Body, a main transmission device transmission mechanism, a differential transmission device transmission mechanism, a main transmission tooth and a differential transmission tooth, the micro semi-cylinder has a cavity, and the micro semi-cylinder is connected to the machine base On one side, and the cavity and the accommodating space are in communication with each other; the main transmission mechanism includes a main transmission table installed in the accommodating space; the differential transmission mechanism includes A differential sending tool table in the accommodating space, the differential sending tool table and the main sending tool table abut against side by side; the main transferring tooth includes a main base, a main arm extending from the main base, and A rear feeding tooth extending from the main arm, the main base is fixed to the main feeding table, and the main arm extends from the accommodating space into the cavity; the differential feeding tooth includes a differential base Seat, a differential arm extending from the differential base, and a forward tooth extending from the differential arm. The differential base is fixed to the differential transmission table, and the differential arm is removed from the container. The setting space extends into the cavity, and the forward feeding teeth are arranged back and forth corresponding to the rear feeding teeth and formed in the cavity.

The present invention also has the following effects. By arranging the main feeder table and the differential feeder table in the accommodating space, the structure of each feeder rocker and each feeder drive shaft is more compact and stable. The fixed rear needle guard member is used to provide good support and protection for each needle during the up and down movement.

The detailed description and technical content of the present invention are described as follows in conjunction with the drawings. However, the drawings are only provided for reference and explanation, and are not intended to limit the present invention.

Please refer to Figures 1 to 7. The present invention provides a transfer gear transmission configuration structure for a sewing machine. The present invention is mainly aimed at the inventor’s previous application and approved patent publication number TWI305241 based on the patent case for further improvement. Therefore, for the same part of this case and the aforementioned patent case, please refer to the description of the aforementioned patent case.

The sewing machine 8 mainly includes a bed 81 and an arm 82 fixed above the bed 81. The bed 81 mainly includes a base 811 and a throat section 812, wherein the throat section 812 can be It is made integrally with the base body 811, or the throat part 812 of this embodiment is fixed on one side of the base body 811 through a plurality of screws, and there is an accommodating space 813 inside the base 81, which contains The space 813 mainly includes a first accommodating space 814 formed inside the seat body 811 and a second accommodating space 815 formed inside the throat portion 812.

Further, the sewing machine 8 also includes a main shaft mechanism 83, a motion conversion mechanism 84, a seam pitch conversion mechanism 85, a seam pitch adjustment mechanism 86, a differential conversion mechanism 87, and a differential adjustment mechanism that are connected to each other. 88. A hook drive mechanism 89 and other related mechanisms and components. The main shaft mechanism 83 is arranged on the machine base 81 and is driven by a motor (not shown) to rotate in a single direction. The motion conversion mechanism 84 arranged in the machine base 81 converts the unidirectional rotary motion of the main shaft mechanism 83 into a predetermined angle For the reciprocating movement within the range, the stitch length conversion mechanism 85 is connected to the motion conversion mechanism 84, and the differential conversion mechanism 87 is connected to the stitch length conversion mechanism 85.

The transfer gear transmission configuration structure of the present invention mainly includes a miniature half-cylinder body 10, a main transfer device transmission mechanism 20, a differential transfer device transmission mechanism 30, a main transfer tooth 40 and a differential transfer tooth 50.

The miniature half-cylinder body 10 mainly includes a flat plate 11 and a half-cylinder member 12 extending outward from the plate 11. The peripheral shape of the flat plate 11 is consistent with the peripheral shape of the aforementioned throat portion 812. The half-cylinder member 12 is approximately a half cylinder When the half-cylinder member 12 is semicircular, its radius must be less than 26.5mm, and the radius of 24mm or 23mm is preferred; when the half-cylinder member 12 is a polygon, The lateral width is 53 mm or less, and the lateral width is preferably 48 mm or less or 46.2 mm or less. There is a cavity 121 inside the half-tube member 12, a protrusion 122 extends in the cavity 121, and a through hole 123 is defined in the protrusion 122. The micro semi-cylinder 10 is fixed on one side of the base 81 through its flat plate 11, and makes the cavity 121 and the aforementioned accommodating space 813 communicate with each other. The micro semi-cylinder body 10 also includes an end cap 13 which is closed on the end of the semi-cylinder member 12 away from the flat plate 11.

Main feed with drive mechanism 20 is mounted within the accommodating space 813 and from 85 connection alteration means and the slit, slit from the adjusting mechanism 86 corresponds to the seam from the converting means 85 configuration, and to vary the respective constituent elements of the seam from the converting means 85, In order to achieve the adjustment of the seam pitch, the main transmission device transmission mechanism 20 mainly includes a main transmission device table 21, a main transmission device rocker 22 and a main transmission device transmission shaft 23, wherein the main transmission device table 21 is set Set in the first accommodating space 814, one end of the main conveyor rocker 22 penetrates the main conveyor table 21 and is used to drive the main conveyor table 21 to move up and down, and the other end of the main conveyor rocker 22 passes through Into the second accommodating space 815 to be connected with the gap changing mechanism 85, one end of the main conveyor shaft 23 penetrates the main conveyor table 21 and is used to drive the main conveyor table 21 to move forward and backward. The other end of the shaft 23 penetrates into the second accommodating space 815 to connect with the motion conversion mechanism 84.

The differential feeder transmission mechanism 30 is installed in the aforementioned accommodating space 813 and connected to the aforementioned differential conversion mechanism 87 , and the differential conversion mechanism 87 is connected to the gap conversion mechanism 85. The differential adjustment mechanism 88 corresponds to the differential The conversion mechanism 87 is configured and used to change the relative directions and positions of the components of the differential conversion mechanism 87 to achieve differential seam pitch adjustment. The differential feeder transmission mechanism 30 includes a differential feeder table 31 and a differential The feeder rocker 32 and a differential feeder drive shaft 33, the differential feeder table 31 and the main feeder table 21 abut against each other side by side, the differential feeder drive shaft 33 sleeves the main feeder drive shaft 23, the differential One end of the feeder rocker 32 penetrates the differential feeder platform 31 and is used to drive the differential feeder platform 31 to move up and down, and the other end of the differential feeder rocker 32 penetrates into the second accommodating space 815 In connection with the differential conversion mechanism 87, one end of the differential feeder transmission shaft 33 penetrates the differential feeder table 31 and is used to drive the differential feeder table 31 to move forward and backward. The other end of the differential feeder transmission shaft 33 One end penetrates into the second accommodating space 815 to connect with the motion conversion mechanism 84.

To further illustrate, the main feeder table 21 has a front fork 211, a rear fork 212 and a middle chute 213, and a rear bump 214 is formed above the rear fork 212, and the differential feeder 31 is also It has a front fork 311, a rear fork 312 and a middle chute 313, and a front bump 314 is formed above the front fork 311. The main feeder table 21 is side by side against the differential feeder table 31 on the left side, and the front fork 211, rear fork 212, and middle chute 213 of the main feeder table 21 correspond to the front fork 311, rear fork 312, and middle chute 313 of the differential feeder 31, respectively. .

Each of the rear forks 212 and 312 collectively accommodates a rear sliding block 24, and the rear sliding block 24 is used for the aforementioned main feeder rocker 22 to pass through. Each of the front fork openings 211 and 311 collectively accommodates a front sliding block 34, and the previous sliding block 34 is used to pass through the aforementioned differential feeder rocker 32. The middle chute 213 of the main feeder table 21 is accommodated by a left slider 25, one end of the main feeder drive shaft 23 penetrates the left slider 25 through a shaft 231, and the middle chute 313 of the differential feeder table 31 is provided for A right slider 35 is accommodated, and one end of the differential feeder transmission shaft 33 penetrates the right slider 35 through a shaft 331.

The main transfer tooth 40 mainly includes a main base 41, a main arm 42 extending from the autonomous base 41, and a rear feeding tooth 43 extending from the autonomous arm 42. The main base 41 is fixed to the rear protrusion 214 of the main feeding tool table 21 Above, the main arm 42 extends from the aforementioned second accommodating space 815 into the aforementioned cavity 121 of the aforementioned half-cylinder member 12.

The differential transfer tooth 50 mainly includes a differential base 51, a differential arm 52 extending from the differential base 51, and a forward feeding tooth 53 extending from the differential arm 52. The differential base 51 is fixed on the differential arm 52. On the front protrusion 314 of the feeding table 31, the differential arm 52 extends from the second accommodating space 815 into the cavity 121 of the semi-cylinder member 12, and the front feeding teeth 53 are arranged back and forth corresponding to the rear feeding teeth 43. And formed in the aforementioned cavity 121.

Further, the transfer gear transmission configuration structure of the present invention further includes a rear needle guard 60, and the rear needle guard 60 is a fixed rear needle guard, which penetrates the aforementioned through hole 123 and is fixed to the half cylinder by a screw The component 12 is also formed in the cavity 121.

Further, the transfer gear transmission configuration structure of the present invention further includes a front needle guard member 65. The previous needle guard member 65 is a movable front needle guard member. The aforementioned hook needle transmission mechanism 89 includes a hook needle seat 891 and fixed on the hook A crochet needle 892 of the needle base 891, the front needle guard member 65 is fixed to the crochet needle base 891 by a screw, and moves with the crochet needle 892.

To sum up, the transfer gear transmission configuration structure of the sewing machine of the present invention can indeed achieve the intended purpose of use, and solve the lack of conventional knowledge. Because of its novelty and advancement, it fully meets the requirements of an invention patent application and is in accordance with the patent law. To apply, please check carefully and grant the patent for this case to protect the rights of the inventor.

10: Mini half cylinder

11: Tablet

12: Half tube member

121: cavity

122: bump

123: Through hole

13: end cap

20: Main transmission mechanism

21: Main delivery table

211: front fork

212: rear fork

213: middle chute

214: Back bump

22: Main delivery with joystick

23: Main transmission shaft

24: Rear slider

25: Left slider

30: Differential transmission mechanism

31: Differential delivery table

311: front fork

312: rear fork

313: Intermediate Chute

314: Front bump

32: Differential delivery rocker

33: Differential transmission shaft

34: Front slider

35: Right slider

40: Main transfer gear

41: Main base

42: main arm

43: rear tooth

50: Differential transfer gear

51: Differential base

52: Differential arm

53: forward tooth

60: Rear needle guard

65: Front needle guard

8: Sewing machine

81: Base

811: Block

812: Throat

813: housing space

814: first accommodation space

815: second accommodation space

82: Arm

83: Spindle mechanism

84: Motion Transformation Mechanism

85: Seam pitch conversion mechanism

86: Sewing distance adjustment mechanism

87: Differential conversion mechanism

88: Differential adjustment mechanism

89: Crochet drive mechanism

891: Crochet seat

892: crochet

Figure 1 is a perspective view of the present invention combined with a sewing machine.

Figure 2 is a schematic diagram of the combination of the present invention and the base.

Figure 3 is an exploded view of the transfer gear transmission configuration structure of the present invention.

Figure 4 is a schematic diagram of the combination of the throat part of the machine base and the sewing machine of the present invention.

Figure 5 is a schematic diagram of the combination of various mechanisms of the present invention combined with the sewing machine.

Fig. 6 is a schematic view of the combination of the mechanisms of the present invention combined with the sewing machine from another perspective.

Fig. 7 is a schematic view of the combination of the mechanisms of the present invention combined with the sewing machine from another perspective.

10: Mini half cylinder

11: Tablet

12: Half tube member

121: cavity

122: bump

123: Through hole

20: Main transmission mechanism

21: Main delivery table

211: front fork

212: rear fork

213: middle chute

214: Back bump

22: Main delivery with joystick

23: Main transmission shaft

24: Rear slider

25: Left slider

30: Differential transmission mechanism

31: Differential delivery table

311: front fork

312: rear fork

313: Intermediate Chute

314: Front bump

32: Differential delivery rocker

33: Differential transmission shaft

34: Front slider

35: Right slider

40: Main transfer gear

41: Main base

42: main arm

43: rear tooth

50: Differential transfer gear

51: Differential base

52: Differential arm

53: forward tooth

60: Rear needle guard

Claims (10)

A transmission gear transmission configuration structure of a sewing machine, the sewing machine includes a machine base with an accommodating space inside the machine base, and the transmission gear transmission configuration structure includes: A miniature half-cylinder body having a cavity, the miniature half-cylinder body is connected to one side of the base, and the cavity and the accommodating space are in communication with each other; A main transmission mechanism, including a main transmission table installed in the accommodating space; A differential transmission tool transmission mechanism, including a differential transmission table installed in the accommodating space, the differential transmission table and the main transmission table abut against each other in parallel; A main transfer tooth includes a main base, a main arm extending from the main base, and a rear tooth extending from the main arm. The main base is fixed to the main transfer table, and the main arm extends from The accommodating space extends into the cavity; and A differential transfer tooth, including a differential base, a differential arm extending from the differential base, and a forward tooth extending from the differential arm, the differential base being fixed to the differential feeding tool The differential arm extends from the accommodating space into the cavity, and the forward feeding teeth are arranged back and forth corresponding to the rear feeding teeth and formed in the cavity. The transfer gear transmission configuration structure of a sewing machine according to claim 1, wherein the miniature half-cylinder body includes a flat plate and a half-cylinder member extending outward from the plate, and the cavity is formed in the half-cylinder member. The transfer gear transmission configuration structure of the sewing machine according to claim 2, wherein the miniature half-cylinder body further includes an end cover, and the end cover is closed on the end of the half-cylinder member away from the flat plate. The transfer gear transmission configuration structure of a sewing machine according to claim 1, wherein the main feeding device transmission mechanism further includes a main feeding device rocker, and the differential feeding device transmission mechanism further includes a differential feeding device rocker. One end of the feeder rocker penetrates the main feeder table and the differential feeder through a rear slider, and one end of the differential feeder rocker penetrates the main feeder and the differential through a front slider The moving tool table is used together to drive the main tool table and the differential tool table to move up and down. The transfer gear transmission configuration structure of a sewing machine according to claim 4, wherein the main feeder transmission mechanism further includes a main feeder drive shaft, and the differential feeder transmission mechanism further includes a differential feeder drive shaft. The transmission shaft of the differential transmission device passes through the transmission shaft of the differential transmission device. One end of the transmission shaft of the main transmission device penetrates the main transmission device table and is used to drive the main transmission device table to move forward and backward. The differential transmission device transmission shaft One end of it penetrates the differential feeder table and is used to drive the differential feeder table to move forward and backward. According to claim 1, the transfer gear transmission configuration structure of a sewing machine further includes a fixed rear needle guard member. The transfer gear transmission configuration structure of a sewing machine according to claim 6, wherein a protrusion extends in the cavity, a through hole is opened in the protrusion, and the rear needle guard is penetrated and fixed in the through hole And formed in the cavity. According to claim 1, the transfer gear transmission configuration structure of a sewing machine further includes a movable front needle guard member. The transfer gear transmission configuration structure of a sewing machine according to claim 8, wherein the sewing machine further includes a crochet transmission mechanism, and the crochet transmission mechanism includes a crochet base and a crochet fixed on the crochet base, The front needle guard member fixes the crochet seat and moves with the crochet. The transfer gear transmission configuration structure of a sewing machine according to claim 1, wherein the main feeder table has a rear fork, and a rear protrusion is formed above the rear fork, and the main base is fixed to the rear protrusion In the upper part, the differential feeder table has a front fork, a front bump is formed above the front fork, and the differential base is fixed on the front bump.

Images