TWI477672B - Driving structure for an upper circular sewing hook of a sewing machine - Google Patents

Description

Sewing machine upper loop hook drive structure

The invention relates to a loop sewing hook driving structure of a sewing machine, in particular to a structure in which a power source is directly driven by rotation of a needle bar driving shaft of a driving needle bar.

According to the driving structure of the loop hook on the sewing machine, the structure of the power source and the power transmission of the upper loop seam hook has been separately transmitted by the main shaft at the machine base, which is a continuous linkage system, and the system has a complicated structure. The cost of production and maintenance is high, and the adjustment of the accuracy of the motion coordination is not easy. Therefore, the author proposes Taiwan No. 86118935 "Coaxial timing driving needle bar and upper ring sewing mechanism sewing machine", and the power of the upper ring sewing hook is indeed The needle bar drive structure is used to simplify the structure and increase the accuracy of the action coordination. The creator is still not complacent. Another case of Taiwan No. 88205627 "Coaxial timing driving needle bar and upper ring sewing mechanism sewing machine (2)" will be proposed. The timing-driven transmission mechanism is optimized, but the stability of the components and the certainty of the swing of the upper ring hook are still important topics for the creator to continue to develop.

The object of the present invention is to provide a sewing machine upper ring hook driving structure, which mainly provides the upper ring sewing hook and the matching driving device at the end of the cantilever near needle bar of the sewing machine, the driving device can simplify the structure of the related transmission. In addition, the matching design between the upper ring stitch hook driving device is adopted to improve the efficiency and stability of the transmission; In order to achieve the purpose, the driving device is configured to cooperate with the needle bar drive shaft of the needle bar to provide a driving member for swinging a driving rod and a driving device to directly or indirectly drive an upper ring arm and a top ring arm end. The upper ring slit hook, the driving device is mainly arranged to cooperate with the pivoting member of the transmission rod and cooperate with the elastic resetting member disposed on the transmission rod, and the power form of the needle rod transmission shaft is rotated back and forth. The action form which is stably oscillated back and forth on the horizontal surface can effectively transmit the power to the upper ring-slit arm while maintaining the maximum amount of displacement in the vertical direction; wherein the structure of the driving device is included in the The transmission rod is directly pivoted at a middle portion of the upper ring-slit arm in a directly driven structural form; or the transmission rod drives a link through a swinging member and is pivotally connected to the middle portion of the upper annular arm at the other end of the connecting rod for indirect transmission Power, or through the transmission rod through a shaft that swings the center of the swinging shaft, the power transmitted to the other end of the swinging member drives the middle portion of the upper loop swing arm through a connecting rod One end of the slit swing arm is pivotally disposed at the bottom of the cantilever, and the other end is a free end combined to drive the upper loop slit hook, so that the back and forth rotation of the needle rod drive shaft can be effectively converted into a horizontal swing shape, which becomes another indirect driving implementation. For example.

Another object of the present invention is to provide a loop sewing hook drive structure for a sewing machine, which can be quickly assembled or disassembled at the end of the upper loop seam arm for facilitating the upper loop seam hook between the upper loop swing arm and the upper loop seam hook Further, a quick release device is provided, the quick release device has a positioning sleeve and a button disposed on the sleeve end of the upper ring slit arm, and the button is sleeved on the positioning sleeve to control the positioning sleeve and the sleeve end The relationship between positioning or not, the upper loop seam hook is connected to the positioning sleeve, so as to achieve the purpose of quick release and quick change of the upper loop seam hook.

A second object of the present invention is to provide a sewing machine upper ring hook driving structure, and a clutch device is further disposed between the needle bar driving structure and the driving device, and the clutch device is coupled to the driving device and the needle of the driving device. A clutch lever is disposed between the rod driving structure, and one end of the clutch rod is driven by the clutch member of the clutch lever to move axially parallel to the needle rod driving shaft, so that the power of the needle rod driving structure can pass through the clutch rod simultaneously Or at the same time, the driving structure and the driving member of the driving device are passed through, so that the power can synchronously drive or not drive the driving member, and the clutch member is a switching member and a pressing member and an upper ring spacer base structure. Correspondingly, the user can adjust the position of the clutch by pressing the pressing member to achieve the power transmission of the driving device for controlling the upper loop hook. The purpose of the person.

The preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.

First, please refer to FIG. 4 and FIG. 4, and the present invention provides a preferred embodiment of the sewing machine upper loop hook driving structure, wherein the main structure of the sewing machine 10 includes a base 11 and a An inverted L-shaped cantilever 12 extending from the side of the base 11 is laterally provided with a drive shaft 13 for rotating a power source such as a motor, and the cantilever 12 is parallel to the drive shaft 13 There is further provided a needle bar drive shaft 14 for driving the drive shaft 13 to rotate back and forth. The pin drive shaft 14 has one end driven by the drive shaft 13 and the other end extends to the end of the cantilever 12 to which the needle bar 15 is disposed. The connecting block 150 on the needle bar 15 and the connecting rod 16 are connected to each other via the swinging member 17 disposed on the needle bar drive shaft 14. The driving structure of the needle bar 15 is a conventional structure. I will not go into details here.

The sewing machine 10 further has an upper loop stitch 18 driven by an upper loop arm 19, which is also a conventional structure; the invention is characterized by the swinging member 17 in the driving structure of the needle bar 15 and the upper loop seam A driving device 20 is disposed between the arms 19 to change the power mode of the needle bar drive shaft 14 to drive the needle bar 15, until the upper ring arm 19 swings horizontally.

Referring to Figures 3 and 4, the oscillating member 17 is a block-like structure having a large cross-sectional area at both ends and a thin waist portion, and a through hole 170 is provided at one end for the needle rod drive shaft 14 to pass through and the fixing bolt 171 is screwed. The other end of the swinging member 17 is inserted into one end of the connecting rod 16 , and the other end of the connecting rod 16 is pivotally connected to the connecting block 150 and drives the needle bar 15 . The swinging member 17 is pivoted. A penetrating clutch hole 173 is further disposed in the middle portion for a clutch lever 174 to pass through, and the other end of the clutch lever 174 is coupled with the driving device 20 to transmit power.

The driving device 20 is provided with a driving member 21, a driving rod 22, a wearing rod member 23, a swinging member 24 and a connecting rod 25, which are sequentially connected to each other, and transmits power to the upper ring-slit arm 19; The driving member 21 is a middle section For the bent elongate block, a perforation 210 is provided in the middle portion for the needle rod transmission shaft 14 to pass through, and the driving member 21 has a passive portion 211 having a perforation at one end, and the clutch rod 174 is driven through the driving member. The other end of the 21 is formed with two pivots 212. One end of the transmission rod 22 is disposed between the two pivots 212. The two pivots 212 are oppositely provided with a pivot hole 213. A pivot pin 214 passes through the pivot hole 213 and the transmission rod simultaneously. The end portion of the 22 is such that the driving member 21 is pivotally connected to the end of the transmission rod 22 by the pivot pin 214.

The transmission rod 22 extends into the end of the two pivoting ears 212 to form a pivot portion 220 having a planar shape on both sides of the large diameter cylinder, and the pivot pin 214 passes through the plane of the pivot portion 220, and the pivot portion 220 is disposed. The two pivoting legs 212 are provided with a clearance so that the pivoting portion 220 can move along the pivot pin 214 between the two pivoting ears 212, thereby absorbing the transmission rod 22 to move up and down and cooperate with the driving member 21 to swing back and forth. The amount of displacement generated by the horizontal swinging action of the rod member 23, and the bottom portion of the pivot portion 220 is downwardly provided with a round rod-shaped wearing portion 221; the threading rod member 23 is an elongated 6-shaped block body, and one end thereof is provided The wearing portion 230 has a vertical through-hole shape, and the wearing portion 221 passes through the wearing portion 230, and a receiving member 222 is disposed on the outer diameter of the end portion of the wearing portion 221. The bottom end is further provided with a ring groove, and a C-shaped buckle 223 is buckled and positioned in advance, and the reset member 222 is not pulled out of the wearing portion 221 and one end is directed toward the wearing rod member 23 to pass through the rod portion 230. The bottom portion has an elastic pre-stress between the thread-piercing member 23 and the transmission rod 22, so that the sliding movement of the two members can be more stable; the other end of the thread-piercing member 23 is provided. The bent form of a hairpin, formed a fixed concave portion 231 of the concave shape, and a slit 232 is formed in the fixed shaft portion 231. The side of the narrow hole 232 is provided with a stopper 233 passing through and the other side is screwed tightly to be clamped thereto. a member of the shaft portion 231, one end of a rotating shaft 234 is fixed in the fixed shaft portion 231, and the rotating shaft 234 is driven by the threading member 23; the one end of the swinging member 24 is provided with a shaft hole 240 for the rotating shaft 234 One end of the shaft hole 240 is provided with two locking bolts 241 to be screwed into the shaft hole 240, and is fixed to the rotating shaft 234, so that the swinging member 24 and the rotating shaft 234 are mutually driven, and the swinging member 24 is provided. The other end of the swinging end 242 extends horizontally through a pivot hole 243 for receiving a first pivot pin 244 for pivoting the connecting rod 25; the connecting rod 25 is a two-terminal end a long circular block body having two pivot holes 250 at one end, one end for the first pivot pin 244 to pass through, the other end for the second pivot pin 251 to pass through, and the other end of the pivot pin 251 to be placed The upper ring-slit arm 19 is driven by a vertical block-shaped structure, and a hollow cylindrical portion 190 is formed at one end to be pivotally disposed on the opposite structure of the cantilever 11 In this embodiment, the pivot portion 190 is pivoted through a cylindrical fixed shaft 260. One end of the fixed shaft 260 is disposed at a corner end of the hollow triangular shaped positioning frame 26, and the other end of the positioning frame 26 is hinged. The rotating shaft 234 is disposed, and the third corner end of the positioning frame 26 is provided with another fixed shaft 260 to be fixed to the bottom end surface of the cantilever 12.

A certain bolt hole 191 is further disposed in a middle portion of the upper ring-slit arm 19, and the second pivot pin 251 is inserted into the bolt hole 191 at one end, and the side bolts are matched with the bolt 192. One end is screwed into the locking hole 191 and urged toward the second pivot pin 251 so that the upper ring arm 19 can be pivotally driven by the connecting rod 25.

When the needle bar drive shaft 14 rotates back and forth, the driving member 21 is inserted into the swinging member 17 via the clutch lever 174, so that the driving member 21 and the swinging member 17 are synchronously oscillated coaxially, and the driving rod 22 is as shown in the fourth and fifth. As shown in the figure, the movement from the starting position a1 to the final position b1, back and forth and up and down, causes the threading portion 230 of the rod member 23 to move relative to each other at the wearing portion 221, and the threading portion 230 simultaneously starts. When the horizontal plane between the position a1 and the final position b1 moves back and forth, the rotation shaft 234 of the other end of the rod member 23 generates a rotation angle θ, and simultaneously drives the swing member 24 to rotate at a rotation angle θ, and the pivot bolt of the link 25 is interlocked. 244 moves back and forth between the starting position a2 and the final position b2, and the upper ring arm 19 is centered on the pivot 190, and the other pivot pin 251 on the link 25 is at the starting position a3 and the final position b3. The back and forth movements are made such that the upper loop stitch 18 at the end of the upper loop arm 19 can be moved back and forth at the same swing angle.

The driving device 20' can also be simplified as shown in FIG. 6, that is, one of the driving member 21' and the one swinging member 17' disposed on the needle bar drive shaft 14 can be integrated and powered. The driving rod 21' is pivotally connected to the driving member 21', and the driving member 21' is pivotally connected to a driving rod 22'. The driving rod 22' has a wearing portion 221 Directly passing through the predetermined bolt hole 191' of the upper ring-slit arm 19, and a reset member 222' is disposed on the end portion passing through the bolt hole 191' and cooperates with the C-shaped buckle 223'. The pivot portion 190' at one end of the upper ring arm 19 is pivotally disposed on the sewing machine at an opposite position The other end is combined with the upper ring hook 18 to achieve the aforementioned power transmission. The driving member 21' has two pivots 212' at one end, and a pivot pin 214' passes through the two pivots 212 at the same time. ' The transmission rod 22' extends into the end of the two pivots 212' to form a pivot 220' for the pivot pin 214' to pass through, and to maintain the clearance between the pivot 220' and the two pivots 212' And the swinging member 17 drives the needle bar 15 through a shaft 172' at the other end.

The driving device 20" can also be configured as shown in FIG. 7, that is, a driving member 21" and a swinging member 17" are disposed on the needle bar drive shaft 14 to form an integrated structure, so that the power can be Directly transmitted from the needle bar drive shaft 14 to the swinging member 17" and the driving member 21", the driving member 21" is pivotally connected to a transmission rod 22" having a wearing portion 221" directly Passing through one end of a swinging member 24", the middle portion of the swinging member 24" is pivotally disposed in the cantilever 12, and the other end of the swinging member 24" is pivotally connected to a connecting rod 25" end, and the connecting rod 25" is hinged at the other end. Connected to the certain bolt hole 191" of the upper ring arm 19 to drive the upper ring arm 19 to swing; the middle portion of the swing member 24" is provided with a shaft hole 240" for a pivot shaft 245 fixed to the cantilever 12 to pass through. Pivot, and the two ends of the pendulum 24" respectively have a hollow long tube body provided with a rod hole 246 for passing through the wearing portion 221", and another end portion of the wearing portion 221" The sleeve is provided with a reset member 222" and cooperates with the C-shaped buckle 223" to maintain the elastic force of the wearing portion 221" and the swing member 24"; and the other end of the swing member 24" Flat end 242 extends a wobble ", the wobble end 242" is provided with a central vertical pivot through hole 243 'is provided for through a first pivot pin 244" is pivotally connected to the connecting rod 25"; the connecting rod 25" is a long slab body having a circular shape at both ends, and the two ends are respectively provided with a pivot hole 250", one end of which is passed through the first pivot pin 244". The other end of the upper pivoting arm 19 is provided with a second bolt 251 ′′, and the second pivoting bolt 251 ′′ is disposed at the upper end of the upper annular arm 19 ′′. The locking hole 191' is passed through the second pivot pin 251" and is fixed by a bolt side screw, and the upper ring arm 19 is provided with a pivot portion 190" at a position opposite to the sewing machine. And the other end is combined with the upper ring seam hook 18, which can also achieve the purpose of the power transmission; and the driving member 21" has two pivots 212" at one end, and a pivot pin 214" passes through the two pivot ears 212" at the same time. The transmission rod 22" extends into the end of the two pivots 212" to form a pivot 220" for the pivot pin 214" to pass through, and the pivot 220" and the two pivots 212" maintain a clearance, And the other end of the swinging member drives the needle bar 15 via a shaft 172".

In addition, the upper ring seam hook 18 of the present invention and the upper ring seam arm 19 are separately detachable and replaceable, and a quick release device 30 and an opposite structure are provided. Please cooperate with the third, eighth, ninth, and tenth portions. As shown in the figure, the free end of the upper ring-shaped arm 19 forms a thin plate-shaped sleeve end 193, and the front end of the sleeve end 193 forms a stop portion 194 which is recessed upwardly, and a bolt is locked near the stop portion 194. A plate-shaped elastic top plate 195 is provided, and the bending of the elastic top piece 195 is upwardly convex to provide an upwardly elastic force; the upper end of the upper ring hook 18 is a hook line end which cooperates with the action bar of the needle bar 15 The other end of the second end of the receiving end 180 has a convex stop portion 181, and the connecting end 180 is provided with two coupling holes 182 in the form of a screw hole; the quick release device 30 includes a positioning sleeve 31 and a button 32, wherein the positioning sleeve 31 is in the form of a square hollow sleeve, wherein a through portion 310 having a width corresponding to the joint 180 is formed, and the open end of the wearing portion 310 forms two recessed portions 311. The locking portion 181 is matched to form a locking positioning effect. The bottom portion of the positioning sleeve 31 for the externally threaded plugs of the two coupling bolts 33 penetrates into the wearing portion 310 and is screwed and coupled with the coupling hole 182 of the connecting end 180. The wearing portion 310 can be inserted into the sleeve end 193 of the upper ring-slit arm 19; and the top of the positioning sleeve 31 is further formed by two parallel slots 312 to form an elastic elastic piece 313, and the base of the elastic piece 313 is close to the upper ring. The end of the slot arm 19 penetrates and extends toward the upper loop hook 18 to form a free end. The free end of the elastic piece 313 extends beyond the through portion 310 and forms a concave fixed spring slot 314 at the end to accommodate a One end of the coil spring 34, the other end of the spring 34 is pushed toward the button 32; the wearing portion 310 of the positioning sleeve 31 is opened An inverted U-shaped limiting portion 315 extends upwardly on both sides of the mouth end. The limiting portion 315 extends over the free end of the elastic piece 313 to limit the button 32. The bottom end surface of the elastic piece 313 is further provided with a convex section. The triangular-shaped card portion 316 is elastically snapped into the stop portion 194 of the upper ring-shaped arm 19 as shown in FIG. 9; and the button 32 is a four-square structure having a vertical positioning sleeve 31. a cavity 320 having a groove-shaped recessed opening, the receiving portion 320 is disposed between the spring 34 and the fixed end portion 314 of the free end of the elastic piece 313, and the spring 34 pushes the The bottom of the groove 320 of the receiving portion 320 is a pre-force for separating the button 32 from the positioning sleeve 31. The button 32 extends from the top of the open end of the receiving portion 320 to the limiting portion 315 to extend a plate-like extending portion 321 and extends The end of the portion 321 is perpendicularly disposed with a stop edge 322, and the inner edge of the corner 322 and the corner of the extension portion 321 are separately provided with two guide portions 323. The height of the guide portion 323 is lower than the stop edge 322. The height of the guide portion 323 is further formed with a horizontal flange 324. When the button 32 is sleeved on the free end of the elastic piece 313, the flange 322 passes under the restriction portion 315 and exceeds the restriction portion 315. a stop, when the button 32 is pressed to compress the spring 34, the extension portion 321 of the button 32 is located below the restriction portion 315, and the free end of the elastic piece 313 has a margin of moving up and down. As shown in FIG. 10, the card portion 316 of the elastic piece 313 can be retracted from the position of the locking portion 194 when the upper ring-slit hook 18 is removed from the upper ring-slit arm 19, and can be disassembled immediately. When the upper loop hook 18 is on the upper loop arm 19, the button 32 can also be pressed first, and the card portion 316 can elastically enter the stop portion 19 4, the button 32 is released again, and the button 32 can be pushed back to the locking edge 322 against the vertical end surface of the limiting portion 315, and the guiding portion 323 of the button 32 is the limiting portion 315. The bottom edge is guided to the rim 324, and the bottom surface of the limiting portion 315 is abutted, and the free end of the button 32 and the elastic piece 313 is pressed against the stopping portion 194 of the upper circumferential arm 19, and the locking portion 316 cannot be stopped. The 194 is separated to form a stable locked shape, as shown in Fig. 8.

In addition, the present invention cooperates with the driving device 20 to drive the needle bar 15 . The structure is further provided with a clutch device 40, which is shown in the drawings 1-3, and the clutch device 40 is implemented in a form in which the swinging member 17 is separated from the driving member 21, that is, the swinging member 17 has the same The clutch lever 174 is inserted into or disengaged from the clutch hole 173, and the clutch lever 174 is pivoted to the passive portion 211 of the driving member 21, and the end of the clutch lever 174 passing through the passive portion 211 is the clutch device 40. The driving is performed to control whether the end of the clutch lever 174 enters the clutch hole 173 of the swinging member 17 to transmit power.

The clutch device 40 includes a clutch member 41, a switching member 42 for controlling the position of the clutch member 41, a pressing member 43 and a resilient member 44 in the form of a coil spring disposed in cooperation with the pressing member 43 and the elastic member 44. a central support shaft 45, and an upper annular joint base 121 is further disposed at the bottom of the cantilever 12, so that the foregoing structures can be disposed on the upper annular base frame 121; wherein the upper circumferential joint base frame 121 is a curved The L-shaped plate body is directly fixed to the back surface of the cantilever 12 by two bolts. The horizontal end is provided with a pivot hole 122 near the bend, and is further away from the pivot hole 122. The pivot hole 122 is further provided with two positioning portions 123, 124 of the same aperture and in the shape of a perforation, and a connecting portion between the two positioning portions 123, 124 and having a width slightly smaller than the positioning portion 123, 124. The clutch member 41 of the clutch device 40 is a disc-shaped structure and is provided at the center with a hollow sleeve hole 410 pivoted on the needle bar drive shaft 14 and the clutch member 41 is maintained in an upright state. The needle bar drive shaft 14 slides on the periphery of the clutch member 41 and is provided with a The rod hole 411 for clutch lever 174 Parallel to the needle rod drive shaft 14 in a state of being placed and fixed; a coil spring-shaped top member 412 is sleeved on the outside of the needle rod drive shaft 14, and the top end member 412 has one end mounted on the clutch member 41 The other end of the hole 410 is mounted on the needle rod drive shaft 14 such that the clutch member 41 has a pre-force that drives the clutch lever 174 toward the driving member 21; the switching member 42 is a polygonal plate body. The structure is flatly attached to the top surface of the horizontal end of the upper ring base pedestal 121, and one end of the switching member 42 is provided with a pivot portion 420 in a perforated shape, and a pivot shaft 46 passes through the pivot portion 420 and the pivot hole 122. The top portion of the top portion 421 is further provided with a cylindrical top member 421, and the top portion of the top member 421 extends to an end surface of the clutch member 41 that is not supported by the top member 412. The engaging member 412 can push the clutch member 41 against the top member 421 and drive the top member 421 even if the pre-force provided by the engaging member 412 is biased toward the switching member 42. The top member 421, and when the switching member 42 is actuated, the clutch member 41 can be pushed up through the top member 421 to disengage the clutch lever 174 on the clutch member 41. Or the penetrating member 21 is inserted; the pressing member 43 is disposed below the horizontal end of the upper ring-stitching base 121 and can respectively align the two positioning portions 123, 124 and the connecting portion 125. The pressing member 43 has a downward opening. a housing 430 for receiving the elastic member 44. The top of the support shaft 45 passes through the center of the elastic member 44 and the top of the chamber 430 to the switching member 42 and is fixed. The bottom of the support shaft 45 is provided with a large disc shape. a bolt 450 for supporting the elastic member 44 to the top of the chamber 430, so that the pressing member 43 has a pre-stress against the bottom surface of the horizontal end of the upper ring-slit base frame 121, and the top of the pressing member 43 is further provided with a round-diameter and a narrow-necked restricting portion 431 of the two positioning portions 123, 124, in different clutch states. The lower portion is respectively engaged with the two positioning portions 123, 124; and a pressing portion 432 is horizontally protruded from the bottom of the pressing member 43 toward the user for the user to press the pressing portion 432 with a finger and along the connecting portion. 125 shifting to control the position of the switching member 42 and the clutch member 41 to achieve the clutching power; when the restricting portion 431 of the pressing member 43 is engaged with the positioning portion 123 of the driving member 21, the pressing member 43 The switching member 42 driven by the fulcrum 45 is rotated about the pivoting member 46 to the top member 421 near the driving member 21. The clutch member 41 drives the clutch lever 174 to the driving member 21, and the end of the clutch lever 174 is The switching member 42 can be rotated to the position of the positioning portion 124 away from the driving member 21 when the limiting portion 431 of the pressing member 43 is engaged with the positioning portion 124 of the driving member 21; The top piece 421 pushes the clutch member 41 away from the driving member 21, and the distance The end of the rod 174 can be pulled away from the clutch hole 173 of the swinging member 17 so as not to interlock with each other, and the power of the needle bar cannot be transmitted to the upper loop hook 18.

The rotating shaft 234 and the fixed shaft 260 on the respective corner ends of the positioning bracket 26 can be respectively pivoted or fixed to the bottom surface of the horizontal end of the upper circumferential joint frame 121.

The above description is the main components of the embodiment of the present invention and the configuration description thereof. As for the operation mode and the function of the preferred embodiment of the present invention, the following is explained:

1. The power mechanism and the needle rod 15 drive power transmission is more straightforward and simplified: As can be seen from the foregoing description, the power system of the sewing machine upper loop hook driving device 20 of the present invention directly comes from the structure of the needle bar drive shaft 14 for driving the needle bar 15 instead of the frame, because the structure of the base portion is simplified. The cantilever 12 is disposed on the cantilever 12 so as to be surely driven synchronously with the needle bar 15, to minimize the motion error, and the power output is more direct.

2. Installation, operability and maintenance are convenient and simple: the driving device 20 is located at the cantilever 12, where the user's vision is accessible, and at the position above the working base 11, whether during installation or during maintenance When the operator does not need to be at the machine base 11 where the vision is difficult or the bottom of the sewing machine 10, it can be carried out, and its own convenience,

3. It is more convenient to replace the upper ring hook 18: by means of the quick release device 30 disposed between the upper ring hook 18 and the upper ring arm 19, different upper ring hooks 18 can be quickly and conveniently mounted on the upper ring arm 19 or disassemble, with its convenience.

4. The power transmission control is really convenient: the clutch device 40 can directly press the moving clutch by the user's finger in the sewing operation, thereby achieving the control of power transmission or not, and the positioning of the clutch by the pressing member The restriction portion 431 is respectively engaged with the two different positioning portions 123 and 124, and the positioning is more reliable and stable.

"Knowledge"

10‧‧‧Sewing machine

11‧‧‧After

12‧‧‧ cantilever

13‧‧‧Active shaft

14‧‧‧Needle rod drive shaft

15‧‧‧ needle stick

150‧‧‧Contact block

16‧‧‧ Connecting rod

17‧‧‧Swinger

18‧‧‧Upper ring stitch

19‧‧‧Upper ring arm

"this invention"

20‧‧‧ drive

170‧‧‧Perforation

171‧‧‧ fixing bolt

172‧‧‧Axis

173‧‧‧Clutch hole

174‧‧‧Clutch rod

21‧‧‧ Drives

210‧‧‧Perforation

211‧‧‧ Passive Department

212‧‧‧ 枢 ear

213‧‧‧ pivot hole

214‧‧‧ pivot

22‧‧‧Drive rod

220‧‧‧Border

221‧‧‧ wearing parts

23‧‧‧ wearing rods

230‧‧‧ wearing a pole

222‧‧‧Reset parts

223‧‧‧C-shaped buckle

231‧‧‧ Fixed shaft

232‧‧‧

233‧‧‧

234‧‧‧ shaft

24‧‧‧ ornaments

240‧‧‧ shaft hole

241‧‧‧Lock

242‧‧‧Swing end

243‧‧‧ pivot hole

244‧‧‧First pivot

25‧‧‧ linkage

250‧‧‧ pivot hole

251‧‧‧Second pivot

190‧‧‧

260‧‧‧ fixed axis

26‧‧‧ Positioning frame

191‧‧‧Bolt holes

192‧‧‧

30‧‧‧Quick release device

193‧‧‧ Socket

194‧‧‧

195‧‧‧Caps

180‧‧‧Connected

181‧‧‧

182‧‧‧Combination hole

31‧‧‧ Positioning sleeve

310‧‧‧ wearing parts

311‧‧‧Parts

33‧‧‧ Combined tying

312‧‧‧ slotting

313‧‧‧Elastic film

314‧‧‧ fixed spring slot

34‧‧‧ Spring

315‧‧‧Limited

316‧‧‧Card Department

32‧‧‧ button

320‧‧‧ 容

321‧‧‧

322‧‧‧

323‧‧‧Guide

324‧‧ ‧ rim

40‧‧‧ clutch device

121‧‧‧Upper ring joint frame

122‧‧‧Pivot hole

123,124‧‧‧ Positioning Department

125‧‧‧Connecting Department

41‧‧‧ clutches

410‧‧‧ hole sets

411‧‧‧ Rod hole

412‧‧‧ top fittings

42‧‧‧Switching parts

420‧‧‧Band

46‧‧‧ pivot

421‧‧‧ top piece

43‧‧‧Pressing parts

430‧‧ ‧ room

44‧‧‧Flexible parts

45‧‧‧ fulcrum

450‧‧‧ bolt

431‧‧‧Restrictions

432‧‧‧ Pressing department

20’‧‧‧ drive

17’‧‧‧Swinger

172’‧‧‧Axis

19‧‧‧Upper ring arm

191'‧‧‧ pinning hole

21’‧‧‧ Drives

212’‧‧‧ ‧ ear

214’‧‧‧ pivot

22’‧‧‧Transmission rod

221‧‧‧ wearing parts

222’‧‧‧Reset

223’‧‧‧ buckle

22’‧‧‧Transmission rod

220’‧‧‧Border

20”‧‧‧ drive

21”‧‧‧ Drives

17”‧‧‧Swinger

22”‧‧‧Transmission rod

221"‧‧‧ wearing parts

222"‧‧‧Reset parts

223"‧‧‧C-shaped buckle

19‧‧‧Upper ring arm

191"‧‧‧"

24"‧‧‧ ornaments

240"‧‧‧ shaft hole

246‧‧‧Pole hole

242"‧‧‧Swing end

243"‧‧‧ pivot hole

244"‧‧‧First pivot

25"‧‧‧ Connecting rod

250"‧‧‧ pivot hole

251"‧‧‧Second pivot

21”‧‧‧ Drives

212"‧‧‧ ‧ ear

214"‧‧‧"

220"‧‧‧

172"‧‧‧Axis

Figure 1 is a schematic perspective view of the present invention.

Fig. 2 is a perspective view showing the combination of the driving device of the present invention and the quick release device and the clutch device.

Fig. 3 is a perspective exploded view of the driving device of the present invention in combination with the quick release device and the clutch device.

Fig. 4 is a plan view showing the planar view of the partial assembly of the driving device of the present invention.

Fig. 5 is a side view plane and a schematic view of the action of the driving member and the transmission rod of the driving device of the present invention.

Figure 6 is a perspective view showing a second embodiment of the driving device of the present invention.

Figure 7 is a schematic view showing a third embodiment of the driving device of the present invention.

Fig. 8 is a perspective exploded view of the quick release device of the present invention.

Figure 9 is a schematic view showing the combination of the quick release device of the present invention.

Fig. 10 is a schematic view showing the operation of the quick release device of the present invention.

Fig. 11 is a perspective view showing the operation of the clutch device of the present invention in Fig. 2.

12‧‧‧ cantilever

13‧‧‧Active shaft

14‧‧‧Needle rod drive shaft

15‧‧‧ needle stick

150‧‧‧Contact block

16‧‧‧ Connecting rod

17‧‧‧Swinger

18‧‧‧Upper ring stitch

19‧‧‧Upper ring arm

20‧‧‧ drive

170‧‧‧Perforation

171‧‧‧ fixing bolt

172‧‧‧Axis

173‧‧‧Clutch hole

174‧‧‧Clutch rod

21‧‧‧ Drives

210‧‧‧Perforation

211‧‧‧ Passive Department

212‧‧‧ 枢 ear

213‧‧‧ pivot hole

214‧‧‧ pivot

22‧‧‧Drive rod

220‧‧‧Border

221‧‧‧ wearing parts

23‧‧‧ wearing rods

230‧‧‧ wearing a pole

222‧‧‧Reset parts

223‧‧‧C-shaped buckle

231‧‧‧ Fixed shaft

232‧‧‧

233‧‧‧

234‧‧‧ shaft

24‧‧‧ ornaments

240‧‧‧ shaft hole

241‧‧‧Lock

242‧‧‧Swing end

243‧‧‧ pivot hole

244‧‧‧First pivot

25‧‧‧ linkage

250‧‧‧ pivot hole

251‧‧‧Second pivot

190‧‧‧

260‧‧‧ fixed axis

26‧‧‧ Positioning frame

192‧‧‧

30‧‧‧Quick release device

193‧‧‧ Socket

194‧‧‧

195‧‧‧Caps

180‧‧‧Connected

181‧‧‧

182‧‧‧Combination hole

31‧‧‧ Positioning sleeve

33‧‧‧ Combined tying

34‧‧‧ Spring

32‧‧‧ button

40‧‧‧ clutch device

121‧‧‧Upper ring joint frame

122‧‧‧Pivot hole

123,124‧‧‧ Positioning Department

125‧‧‧Connecting Department

41‧‧‧ clutches

410‧‧‧ hole sets

411‧‧‧ Rod hole

412‧‧‧ top fittings

42‧‧‧Switching parts

420‧‧‧Band

46‧‧‧ pivot

421‧‧‧ top piece

43‧‧‧Pressing parts

430‧‧ ‧ room

44‧‧‧Flexible parts

45‧‧‧ fulcrum

450‧‧‧ bolt

431‧‧‧Restrictions

432‧‧‧ Pressing department

Claims (20)

A sewing machine upper loop hook driving structure, wherein the sewing machine comprises a base and a cantilever extending from a side of the base, the cantilever is provided with a needle drive shaft driving a needle bar disposed on the cantilever to move up and down; The sewing machine further has an upper loop seam hook, the upper loop seam hook is connected to an end of the upper loop seam arm; a driving device is arranged between the needle bar drive shaft and the upper ring slit arm; the driving device has a driving component interlocked with each other; a driving rod, the rotation of the needle rod driving shaft is converted into a swing of the upper ring arm; the driving member is driven by the needle rod driving shaft; the other end of the driving member is pivoted with a pivot pin and the end of the driving rod The other end of the transmission rod is provided with a rod-shaped wearing portion; the upper end of the upper ring arm forms a pivot portion, the pivot portion is pivoted, and the pivot is fixed on the cantilever, the upper ring arm The upper end of the ring is provided with a bolt hole, and the upper ring arm is provided with a certain bolt hole for the through portion to be driven. The sewing machine upper ring-slot hook driving structure according to the first aspect of the invention, wherein the end portion of the wearing portion passing through the fixing bolt hole is additionally provided with a resetting member, so that the resetting member does not come out of the wearing portion, and provides The pre-stress between the upper ring arm and the transmission rod. The sewing machine upper ring hook driving structure according to claim 1, wherein the other end of the driving member forms two pivot ears, and the pivot pin passes through the two pivot ears at the same time; The drive rod extends into the ends of the two pivots to form a pivot portion for the pivot pin to pass through, and the pivot portion of the transmission rod and the two pivot ears are provided with a clearance so that the transmission rod can be along the pivot pin Axial movement. The sewing machine upper ring hook driving structure according to the first aspect of the invention, wherein the driving member is further integrated with a swinging member. The sewing machine upper loop stitch driving structure according to the fourth aspect of the invention, wherein: the swinging member has a perforation at one end for the needle rod drive shaft to pass through and is driven, and the other end of the swinging member drives the needle bar, the swinging member is further a clutch hole parallel to the needle rod drive shaft is disposed, and a clutch rod passes through the clutch hole; the driving device has the driving member, the transmission rod, a wearing rod member, a swing member and a connecting rod which are sequentially interlocked with each other. Passing a power conversion to the upper ring arm; wherein the driving member has a through hole for the needle bar drive shaft to pass through, the driving member has a passive portion having a perforation at one end for the clutch rod to pass through, and the other end of the driving member Having at least one pivoting end, the pivot pin passes through the pivoting lug; the driving rod extends to the end of the pivoting lug and further forms a pivot portion for the pivot pin to pass through, and the pivotal portion of the transmission rod and the pivot There is a clearance between the ear, the pivot portion of the transmission rod is provided with a rod-shaped wearing portion; the wearing rod member is provided with a wearing rod portion at one end for the wearing portion to pass through; the wearing rod member has a certain shaft portion at one end, One end of one shaft is fixed; one end of the swing member is provided with a shaft hole for the rotation The other end of the shaft is inserted and fixed, and the other end of the swinging piece extends out of a swinging end, and the swinging end is provided with a first pivot pin Pivoting the connecting rod; one end of the connecting rod passes through the first pivot pin, and the other end is used for the second pivot pin to pass through and drive the upper ring-slit arm; the upper ring-slit arm is provided with the pivot portion at one end, the upper ring-slit arm The pivoting portion of the pivoting portion is disposed on the cantilever. The upper ringing arm is further provided with a certain bolt hole, and the bolting hole is fixed to the second pivot pin. The sewing machine upper ring hook driving structure according to the fifth aspect of the invention, wherein the end portion of the wearing portion is sleeved with a resetting member, and a blocking member is disposed at the end of the wearing portion for the resetting member Reach the top. The sewing machine upper ring stitch driving structure according to the fifth aspect of the invention, wherein the fixed shaft is further provided with a positioning frame for pivoting the rotating shaft. The sewing machine upper ring hook driving structure according to claim 5, wherein the fixed shaft portion opening of the threading member forms a slit, and the slit side is provided with a bolt passing through and screwed to the screw The shaft of the fixed shaft portion. The sewing machine upper ring stitch driving structure according to the fifth aspect of the invention, wherein the upper ring sewing hook and the upper ring sewing arm are further provided with a quick release device, wherein: the free end of the upper ring sewing arm is a set end. The end of the sleeve has a stop; the end of the upper loop hook is a joint; the quick release device comprises a positioning sleeve and a button, wherein the positioning sleeve has a wearing portion for the end to be inserted and combined with each other, Wearing the upper part of the seam The sleeve is further inserted into the sleeve; the positioning sleeve further has an elastic piece, and the end of the elastic piece is provided with a spring, the spring pushes the button; the positioning sleeve is provided with a limiting portion, and the elastic piece is further provided with a card portion for elasticity The button is fastened to the end of the upper ring arm, and the button is provided with a receiving portion for the spring and the elastic piece to be placed therebetween, so that the button and the positioning sleeve have mutually separated pre-forces, and the button is directed to the limiting portion. a retaining portion is disposed, and a retaining edge is disposed at an end of the extending portion, and the stopping edge is provided with a stopping portion opposite to the limiting portion, such that the stopping edge is the limiting portion stop and the stopping portion is the limiting portion Pressing, the card portion of the elastic piece is surely engaged with the stop portion of the upper ring-slit arm, or the button is pressed to move the stop portion away from the stop of the limit portion, so as to be disassembled. The sewing machine upper ring hook driving structure according to claim 9, wherein the free end of the elastic piece has a spring groove for receiving the spring, and the other end of the spring is pushed toward the button. The sewing machine upper ring hook driving structure according to claim 9, wherein a guiding portion of the guiding portion is further provided between the extending portion and the stopping portion. The sewing machine upper ring hook driving structure according to claim 9, wherein the upper ring arm is further provided with a spring top piece near the stopping portion, and the elastic top piece has an elastic preload force for pushing the positioning sleeve; a convex stop portion is formed on the two sides of the connecting end of the upper ring hook, and the open end of the wearing portion of the positioning sleeve has two abutting portions for engaging with the locking portion, and the bottom portion of the positioning sleeve is provided with external threads of the two combined bolts The plug portion penetrates into the wearing portion and is screw-locked with the joint hole of the joint; the top of the positioning sleeve has two slits to form the elastic piece having elasticity. The sewing machine upper ring hook driving structure according to claim 5, wherein the driving device cooperates with the needle bar to further provide a clutch device, the swinging member has the clutch hole for the clutch rod to penetrate or disengage, The clutch rod is pivoted to the passive portion of the driving member, and the end of the clutch rod passing through the passive portion is driven by the clutch device; the clutch device includes a clutch member, a switching member, a pressing member, and an elastic member And a shaft; the clutch member of the clutch device is slidably sleeved on the needle rod drive shaft, the clutch member fixes the clutch rod; a top fitting member is sleeved on the needle rod drive shaft and elastically topped Abutting the clutch member, the clutch member has a pre-stress against the driving member; the switching member is provided with a pivot portion at one end for a pivot to pass through, and the pivot shaft is fixed on the cantilever; the switching member is further The top of the clutch member is provided with a top piece, and the pre-force provided by the top piece is surely abutted against the top piece of the switching piece, and when the switching piece is actuated, the clutch can be pushed through the top piece. a piece that causes the clutch lever on the clutch to move away or penetrate into the swing The pressing member is passed through the elastic member at the same time, and one end of the supporting shaft is fixed to the switching member, and the other end of the supporting shaft has a bolt of the supporting portion to support the elastic member to press the pressing portion The pressing member has a pre-stress against the cantilever, and the pressing member can be positioned at different positions of the cantilever; the pressing is provided with a pressing portion for the user to press and operate. The sewing machine upper ring-slot hook driving structure according to claim 13, wherein the cantilever is further provided with an upper ring-slot base frame, and the clutch device is disposed on the upper ring-slot base frame; The upper ring joint base frame is fixed to the cantilever arm, and further has a pivot hole, and two positioning portions are arranged on an arc centered on the pivot hole, and the two positioning portions are connected by a connecting portion; the switching member is pivoted a pivoting member disposed on the upper annular base frame; the pressing member is further provided with a restricting portion, the pressing member is slidable along the connecting portion and the restricting portion is respectively clamped to different positioning portions; the pressing member has a chamber for accommodating the elastic member and the support shaft, the support shaft being fixed to the switch member through the elastic member and the top of the chamber. The sewing machine upper ring hook driving structure according to claim 13, wherein the clutch member is provided with a hole and a rod hole, the sleeve hole is for the needle rod transmission shaft to pass through, and the rod hole is fixed to the clutch Rod. The sewing machine upper ring hook driving structure according to the first aspect of the invention, wherein the driving device has the driving member, the transmission rod, a swinging member and a connecting rod interlocking with each other, and rotating the needle rod driving shaft back and forth Converting into the swing of the upper ring arm; the driving member is driven by the needle rod drive shaft; the driving member is pivotally connected to the transmission rod, and the transmission rod has a wearing portion passing through one end of the swing member, the middle portion of the swing member The other end of the swinging member is pivotally connected to one end of the connecting rod, and the other end of the connecting rod drives the upper annular arm to swing. The sewing machine upper ring stitch driving structure of the sewing machine according to claim 16, wherein a middle of the swinging piece is provided with a shaft hole for fixing to the hanging The pivoting shaft of the arm is pivoted, and one end of the swinging member has a through hole for the through portion to pass through, and the other end of the swinging member is a swinging end, and the swinging end is provided with a pivot hole opposite to the end of the connecting rod for the first A pivot pin is pivoted, and the other end of the connecting rod is further provided with a pivot hole, and a second pivot pin is pivotally connected to the upper ring arm through the pivot hole, and one end of the upper ring arm is provided with a pivot The shaft is pivotally mounted on the cantilever. The sewing machine upper loop hook driving structure according to claim 17, wherein the wearing portion is further provided with a resetting member through the end portion of the swinging member to maintain an elastic preload between the wearing portion and the swinging member. A sewing machine upper loop hook driving structure, wherein the sewing machine comprises a base and a cantilever extending from a side of the base, the cantilever is provided with a needle bar drive shaft, one end of the needle bar drive shaft extends toward the cantilever, and Driving a needle bar disposed at an end of the cantilever and an upper ring arm disposed under the cantilever, the upper ring arm is provided with an upper ring slit at the end, and a quick release device is disposed between the upper ring hook and the upper ring arm; The free end of the upper ring arm is a set end, the end of the set has a stop; the end of the upper ring hook is a joint; the quick release device comprises a positioning sleeve and a button, wherein the positioning sleeve has a connection The piercing portion is coupled to each other, and the wearing portion is additionally inserted into the sleeve end of the upper ring-slit arm; the positioning sleeve further has an elastic piece, and the elastic piece is provided with a spring, the spring pushing the button; the positioning The sleeve is provided with a limiting portion, and the elastic piece is further provided with a locking portion for elastically locking the stopping portion of the upper annular arm, the button is provided with a receiving portion for the spring and the elastic piece to be placed therebetween, so that the button The positioning sleeve has a pre-separation force, and the button has a protruding portion extending toward the limiting portion, and a stopping edge is disposed at the end of the extending portion, and the stopping edge is provided with a stopping portion relative to the limiting portion, so that the locking portion The stop edge is the stop portion stop and the stop portion is pressed by the limit portion, so that the card portion of the elastic piece is surely engaged with the stop portion of the upper ring-slit arm. The sewing machine upper ring-slot hook driving structure according to claim 19, wherein the upper ring-slit arm is further provided with a topping piece near the stopping portion, and the elastic top piece has an elastic pre-force for pushing the positioning sleeve; a convex stop portion is formed on the two sides of the connecting end of the upper ring hook, and the open end of the wearing portion of the positioning sleeve has two abutting portions for engaging with the locking portion, and the bottom portion of the positioning sleeve is provided with external threads of the two combined bolts The plug portion penetrates into the wearing portion and is screw-locked with the engaging hole of the connecting end; and the top of the positioning sleeve is provided with two slits to form the elastic piece having elasticity.