CN203049233U - Horizontal rotating shuttle for sewing machine and sewing machine - Google Patents
Horizontal rotating shuttle for sewing machine and sewing machine Download PDFInfo
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- CN203049233U CN203049233U CN 201220741227 CN201220741227U CN203049233U CN 203049233 U CN203049233 U CN 203049233U CN 201220741227 CN201220741227 CN 201220741227 CN 201220741227 U CN201220741227 U CN 201220741227U CN 203049233 U CN203049233 U CN 203049233U
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Abstract
The utility model aims to provide a horizontal rotating shuttle for a sewing machine and the sewing machine. According to the horizontal rotating shuttle for the sewing machine, poor thread picking of upper thread can be avoided when the length of the upper thread penetrating an inner rotating shuttle and an outer rotating shuttle is shortened. The bottom surface of the inner rotating shuttle is provided with a first notch portion which is formed when a part of the bottom surface is cut. Under the overlook condition, the first notch portion is placed at a position corresponding to the end portion of a flange portion which is close to the downstream side of a rotation stopping portion of the inner rotating shuttle in the bypass direction of the upper thread of the inner rotating shuttle. The position corresponds to a position, between the inner rotating shuttle and the outer rotating shuttle, of the upper thread. The upper thread caught by a shuttle point passes the position. Therefore, when the upper thread passes between the rotating stopping portion of the inner rotating shuttle and an abutting portion of a faller, the length of the upper thread penetrating between the outer rotating shutter and the inner rotating shutter is shortened.
Description
Technical field
The utility model relates to the use in sewing machine horizontal rotary hook and has the Sewing machines of horizontal rotary hook.
Background technology
Have the Sewing machines that has the horizontal rotary hook of pairing left and right at the downside of needle plate.For example to disclose the Sewing machines that 1996 No. 299645 communiques put down in writing be to utilize two eedles that move up and down in the appearance pin hole of needle plate to form needle trackings to Japan Patent.Each horizontal rotary hook has the interior rotating shuttle that outer rotating shuttle and outer rotating shuttle support.Outer rotating shuttle is the rotation in a clockwise direction that moves up and down matchingly of pivot and eedle with the axle that extends along the vertical direction.Interior rotating shuttle can rotate independently with outer rotating shuttle.Needle plate comprises from the outstanding a pair of abutting part of lower surface.The interior rotating shuttle rotation prevention portion of interior rotating shuttle is connected on the abutting part.Interior rotating shuttle rotation prevention portion rotates and the interior rotating shuttle of prevention for rotating shuttle in preventing is driven in outer rotating shuttle.The spur of the outer rotating shuttle of Sewing machines utilization catches and has run through the upper thread of cloth and this upper thread is passed between rotating shuttle and the interior rotating shuttle outside.Sewing machines is at the staggered upper thread of the bottom line of drawing from the bottom line hole of the interior rotating shuttle of blocked state.
When the thread take-up tension lever of Sewing machines was provoked upper thread, upper thread passed the gap between interior rotating shuttle rotation prevention portion and the abutting part and breaks away from from horizontal rotary hook.Upper thread imports staggered bottom line in the cloth and forms needle tracking.Because upper thread slides, therefore produce resistance to sliding between the abutting part of interior rotating shuttle rotation prevention portion and needle plate.When producing resistance to sliding, upper thread is difficult to by the gap between interior rotating shuttle rotation prevention portion and the abutting part.The rotating shuttle device of the Sewing machines that above-mentioned communique is put down in writing is provided with the inclined plane in the two sides of interior rotating shuttle rotation prevention portion.The resistance to sliding that is applied on the upper thread can be shortened in the inclined plane between interior rotating shuttle rotation prevention portion and abutting part.
But resistance to sliding still produces.Because resistance to sliding, in the time of between upper thread is by interior rotating shuttle rotation prevention portion and abutting part, the length of passing the upper thread between outer rotating shuttle and the interior rotating shuttle is elongated.Its result has and produce the situation of constantly provoking elongated unnecessary upper thread such " take-up is bad " when thread take-up tension lever is provoked upper thread.
The utility model content
The purpose of this utility model is to provide a kind of and passes the length of the upper thread between outer rotating shuttle and the interior rotating shuttle by shortening and can suppress bad use in sewing machine horizontal rotary hook and the Sewing machines of take-up of upper thread.
The use in sewing machine horizontal rotary hook of technical scheme 1 comprises: outer rotating shuttle, and it is supported in the mode that can pivot; And interior rotating shuttle, its with can with respect to above-mentioned outer rotating shuttle in relative rotation mode be bearing in the above-mentioned outer rotating shuttle, and has a diapire, this diapire has and above-mentioned outer rotating shuttle opposed bottom surface, this use in sewing machine horizontal rotary hook is characterised in that, above-mentioned outer rotating shuttle comprises the spur that can catch upper thread, above-mentioned in rotating shuttle comprise: sidewall, its from least a portion of the periphery of above-mentioned diapire to extending axially; Interior rotating shuttle rotation prevention portion, it is above-mentioned outstanding to radial outside from the first end as the end of the above-mentioned sidewall that is positioned at an opposite side with above-mentioned diapire on axially, stop on the abutting part of the needle plate by being connected to the Sewing machines relative with above-mentioned first end above-mentioned in rotating shuttle rotate with above-mentioned outer rotating shuttle; And first notch part, it is arranged on the direction of rotation of rotating shuttle outside above-mentioned of above-mentioned bottom surface than the position of rotating shuttle rotation prevention portion in above-mentioned by the downstream.
In the time of between upper thread is by the abutting part of interior rotating shuttle rotation prevention portion and needle plate, first notch part can shorten the length of passing the upper thread between outer rotating shuttle and the interior rotating shuttle.Upper thread in entering into by the position in downstream than interior rotating shuttle rotation prevention portion rotating shuttle and outside between the rotating shuttle.Therefore, by in this position first notch part being set, thereby can shorten the length of passing the upper thread between outer rotating shuttle and the interior rotating shuttle.The take-up of the upper thread when therefore, the use in sewing machine horizontal rotary hook can suppress thread take-up tension lever and provokes upper thread is bad.
In the use in sewing machine horizontal rotary hook of technical scheme 2, it is characterized in that, rotating shuttle comprises the flange part on the outer peripheral face that is formed on above-mentioned sidewall in above-mentioned, and the direction of rotation with rotating shuttle outside above-mentioned that above-mentioned first notch part is arranged on above-mentioned bottom surface is positioned at than the end corresponding position of above-mentioned rotating shuttle rotation prevention portion by the above-mentioned flange part in downstream.
By in this position first notch part being set, thereby can shorten the upper thread amount when putting into upper thread between outside rotating shuttle and the interior rotating shuttle.Therefore, the use in sewing machine horizontal rotary hook can shorten the upper thread amount of passing between outer rotating shuttle and the interior rotating shuttle, and the take-up of the upper thread in the time of can suppressing thread take-up tension lever and provoke upper thread is bad.
In the use in sewing machine horizontal rotary hook of technical scheme 3, it is characterized in that, rotating shuttle comprises protuberance in above-mentioned, this protuberance is being given prominence to above-mentioned radial outside from the above-mentioned first end of above-mentioned sidewall by the position in downstream than rotating shuttle rotation prevention portion in above-mentioned on the above-mentioned direction of rotation, above-mentioned protuberance has second notch part, and this second notch part is the above-mentioned direction of rotation upstream-side-end of the face of the above-mentioned needle plate side of being positioned at of above-mentioned protuberance to be excised a part towards above-mentioned direction of rotation upstream side form.
Second gap portions is the position between rotating shuttle and the interior rotating shuttle outside the upper thread that the spur with rotating shuttle catches is put into.Therefore, in the time of between upper thread is by the abutting part of interior rotating shuttle rotation prevention portion and needle plate, second notch part can shorten the length of passing the upper thread between outer rotating shuttle and the interior rotating shuttle.The take-up of the upper thread when therefore, the use in sewing machine horizontal rotary hook can suppress thread take-up tension lever and provokes upper thread is bad.
In the use in sewing machine horizontal rotary hook of technical scheme 4, it is characterized in that, above-mentioned sidewall has the 3rd notch part, the 3rd notch part (55) is to form towards the part that above-mentioned radially inner side has excised the above-mentioned direction of rotation downstream of the above-mentioned rotating shuttle rotation prevention portion of being positioned at of above-mentioned protuberance, and the 3rd notch part is to have excised above-mentioned first end from the outer peripheral face side towards above-mentioned radially inner side between the above-mentioned direction of rotation downstream of rotating shuttle rotation prevention portion in above-mentioned and the above-mentioned protuberance to form.
The 3rd gap portions between interior rotating shuttle rotation prevention portion and protuberance, namely in the position of root of rotating shuttle rotation prevention portion.The length of passing the upper thread between outer rotating shuttle and the interior rotating shuttle reaches the longest on every side in this position.Therefore, between the abutting part of rotating shuttle rotation prevention portion and needle plate the time, the 3rd notch part can shorten the length of passing the upper thread between outer rotating shuttle and the interior rotating shuttle in upper thread passes.Therefore, it is bad that the use in sewing machine horizontal rotary hook can further suppress the take-up of the upper thread when thread take-up tension lever is provoked upper thread.
In technical scheme 5,6 use in sewing machine horizontal rotary hook, it is characterized in that, above-mentioned in rotating shuttle comprise: axial region, it extends axially to above-mentioned from above-mentioned diapire, can be inserted in the hole of central authorities of the shuttle that is wound with bottom line; Side-looking is the shuttle pressing plate of L font, and it is bearing in the top ends of above-mentioned axial region in the mode that can rotate, this shuttle pressing plate above-mentioned shuttle can be fixed on above-mentioned on the rotating shuttle; And the sidewall notch part, it is arranged on the above-mentioned first end of above-mentioned sidewall, can insert for the top ends of above-mentioned shuttle pressing plate.
This sewing is directly held shuttle and is utilized the shuttle pressing plate to push down shuttle with horizontal rotary hook.The take-up of the upper thread that this horizontal rotary hook also can suppress thread take-up tension lever when provoking upper thread is bad.
The use in sewing machine horizontal rotary hook of technical scheme 7 is characterised in that, this use in sewing machine horizontal rotary hook also comprises cap, this cap can hold the shuttle that is wound with bottom line, and can be installed on above-mentioned interior rotating shuttle, and can unload from above-mentioned interior rotating shuttle, above-mentioned cap has upper surface, when above-mentioned cap is installed on above-mentioned in during rotating shuttle, this upper surface is positioned at above-mentioned needle plate side, above-mentioned upper surface has the 4th notch part, and the 4th notch part is arranged on than the position of rotating shuttle rotation prevention portion in above-mentioned by the downstream in above-mentioned direction of rotation.
This use in sewing machine horizontal rotary hook is received into shuttle cap and is embedded in interior rotating shuttle.By the upper surface at cap the 4th notch part is set, thus in this horizontal rotary hook, also can shorten pass outside the length of upper thread between rotating shuttle and the interior rotating shuttle.The take-up of the upper thread when therefore, the use in sewing machine horizontal rotary hook can suppress thread take-up tension lever and provokes upper thread is bad.
In the use in sewing machine horizontal rotary hook of technical scheme 8, it is characterized in that, above-mentioned sidewall or above-mentioned cap have the 5th notch part, and the 5th notch part is to form from the part that the above-mentioned radially inner side of outer peripheral face side direction excises above-mentioned sidewall or above-mentioned cap by the downstream than rotating shuttle rotation prevention portion in above-mentioned on the above-mentioned direction of rotation.
Upper thread in entering into by the position in downstream than interior rotating shuttle rotation prevention portion rotating shuttle and outside between the rotating shuttle.Therefore, the use in sewing machine horizontal rotary hook can shorten by in this position the 5th notch part being set pass outside the length of upper thread between rotating shuttle and the interior rotating shuttle.
In the use in sewing machine horizontal rotary hook of technical scheme 9, it is characterized in that above-mentioned spur has by the radially inner side to above-mentioned outward turning shuttle and excised the spur cutting portion that the outer peripheral face side forms.
Excised the outer peripheral face of spur by the radially inner side of outside rotating shuttle, thereby can shorten the length of the upper thread of spur cutting portion institute hook, the length of the upper thread in the time of can shortening upper thread and pass between outer rotating shuttle and the interior rotating shuttle.The take-up of the upper thread when therefore, the use in sewing machine horizontal rotary hook can suppress thread take-up tension lever and provokes upper thread is bad.
In technical scheme 10,11 use in sewing machine horizontal rotary hook, it is characterized in that, be in the scopes of 42 degree～47 degree from base portion to the angle of top ends with respect to above-mentioned axle of above-mentioned spur.
In the past the angle with respect to axle is bigger than the upper limit (47 degree) of above-mentioned scope to the top from the base portion of spur.Lack by the length ratio that makes spur, thereby the time that the upper thread of spur institute hook can be passed between outer rotating shuttle and the interior rotating shuttle shifts to an earlier date in the past.Take-up when therefore, the use in sewing machine horizontal rotary hook can further suppress thread take-up tension lever and provokes upper thread after having passed through between outer rotating shuttle and the interior rotating shuttle is bad.
Because the Sewing machines of technical scheme 12 to 15 has each described use in sewing machine horizontal rotary hook in the claim 1 to 11 respectively, therefore can realize the effect identical with the use in sewing machine horizontal rotary hook of technical scheme 1 to 11.
Description of drawings
Fig. 1 is horizontal rotary hook 2,12 and the vertical view of needle plate 1.
Fig. 2 is the left side view of needle plate 1.
Fig. 3 is the exploded perspective view of horizontal rotary hook 2.
Fig. 4, Fig. 5 are the stereograms of interior rotating shuttle 4.
Fig. 6 is the stereogram of the variation of interior rotating shuttle 4.
Fig. 7 is horizontal rotary hook 20,120 and the vertical view of needle plate 1.
Fig. 8 is the exploded perspective view of horizontal rotary hook 20.
Fig. 9, Figure 10 are the stereograms of interior rotating shuttle 80.
Figure 11, Figure 12 are the stereograms of the variation of interior rotating shuttle 80.
Figure 13 is the side view of outer rotating shuttle 3.
Figure 14 is that the X-X of Figure 13 is to the apparent direction cutaway view.
Figure 15 is the figure of the length of expression spur 32.
Figure 16 is the figure that represents the length of spur 232 in the past.
Figure 17 is the side view of outer rotating shuttle 30 in the past.
Figure 18 is that the Y-Y of Figure 17 is to the apparent direction cutaway view.
The specific embodiment
Embodiment with reference to description of drawings Sewing machines of the present utility model and use in sewing machine horizontal rotary hook.The top of Fig. 1, below, left, right-hand, paper face side, paper rear side are respectively the rear, the place ahead, left of dial plate 1, right-hand, top, below.With reference to Fig. 1, Fig. 2 needle plate 1 and horizontal rotary hook 2,12 are described.
This Sewing machines is provided with the two-needle sewing machine of two eedles about being.Sewing machines overlook the needle plate 1 that is rectangle about below and have horizontal rotary hook 2,12 with respect to the position of needle plate 1 symmetry.Needle plate 1 has pairing left and right work feed hole 10,11 at central portion. Work feed hole 10,11 has cloth-feeding plate (work feed tooth) 8,18 in inside.Cloth-feeding plate 8 has the pin hole 81 of appearance in fore-and-aft direction substantial middle portion, and cloth-feeding plate 18 has the pin hole 181 of appearance in fore-and-aft direction substantial middle portion.Two eedles can run through separately along the vertical direction and hold pin hole 81,181.Cloth-feeding plate 8,18 has jagged concavo-convex (omitting diagram) at upper surface.Cloth-feeding plate 8,18 moves along fore-and-aft direction in work feed hole 10,11.Cloth-feeding plate 8,18 and the presser feet (not shown) of needle plate 1 top clamping cloth and come and go mobile and carry cloth along fore-and-aft direction in the process of making.
Needle plate 1 has the abutting part 7 of interior rotating shuttle rotation prevention portion 41 butts of the flat rotating shuttle 2 that supplies water at the left part lower surface.Abutting part 7 is outstanding downwards from the lower surface of needle plate 1.Abutting part 7 comprises that first abutting part 71, second abutting part 72 and gap 73(are with reference to Fig. 2).Second abutting part 72 is positioned at the position that has separated certain intervals with first abutting part 71.Gap 73 is arranged between first abutting part 71 and second abutting part 72.Needle plate 1 also has the abutting part 17 of interior rotating shuttle rotation prevention portion 141 butts of the flat rotating shuttle 12 that supplies water on the lower surface of right part.Abutting part 17 has the structure identical with abutting part 7, has first abutting part 171, second abutting part 172 and the gap.
The detailed construction of horizontal rotary hook 2 is described with reference to Fig. 1, Fig. 3.The above-below direction of Fig. 3 is the above-below direction of horizontal rotary hook 2.Because the structure of horizontal rotary hook 12 is identical with the structure of horizontal rotary hook 2, so detailed.
Horizontal rotary hook 2 is positioned at the lower left of needle plate 1.Horizontal rotary hook 2 is the rotating shuttles that are rotated centered by the axis that extends along the vertical direction.Horizontal rotary hook 2 has outer rotating shuttle 3, interior rotating shuttle 4 and as rotary shuttle shaft 34 of rotating shaft etc.Outer rotating shuttle 3 turns clockwise overlooking under the state.Interior rotating shuttle 4 is entrenched in the outer rotating shuttle 3 with free rotation mode.The shuttle 6 that is wound with bottom line can be installed in the interior rotating shuttle 4.Horizontal rotary hook 12 is positioned at the lower right of needle plate 1.Horizontal rotary hook 12 has outer rotating shuttle 13 and interior rotating shuttle 14 etc.Outer rotating shuttle 13 turns clockwise overlooking under the state.Interior rotating shuttle 14 embeds in the outer rotating shuttle 13 with free rotation mode.The shuttle 16 that is wound with bottom line can be installed in the interior rotating shuttle 14.
Outer rotating shuttle 3 is fixed on the upper end of rotary shuttle shaft 34.Rotary shuttle shaft 34 rotates synchronously with the elevating movement of eedle (omitting diagram).Outer rotating shuttle 3 comprises interior rotating shuttle accommodation section 31, slot part 35, spur 32 and rotating shuttle pressing plate 33 etc.Interior rotating shuttle accommodation section 31 is members that bottom tube-like is arranged, can be in inside holds rotating shuttle 4.Interior rotating shuttle accommodation section 31 has the slot part 35 that forms along interior Zhou Fangxiang.Flange part 45 by rotating shuttle 4 in making is entrenched on the slot part 35, thereby slot part 35 is so that the mode that interior rotating shuttle 4 can rotate supports interior rotating shuttle 4.Spur 32 direction of rotation of the outside rotating shuttle 3 of peripheral part of rotating shuttle 3 is outside given prominence to.Spur 32 catches the ring of upper threads, around the periphery of interior rotating shuttle 4 upper thread is staggered on the bottom line, forms needle tracking.Rotating shuttle pressing plate 33 is positioned at the upper end of outer rotating shuttle 3, rotating shuttle 4 in pressing from the top.
The structure of interior rotating shuttle 4 is described with reference to Fig. 3～Fig. 6.Interior rotating shuttle 4 embeds in the interior rotating shuttle accommodation section 31 of outer rotating shuttle 3, can rotate independently with outer rotating shuttle 3.Interior rotating shuttle 4 comprises shuttle accommodation section 47, interior rotating shuttle rotation prevention portion 41, axle 43, shuttle pressing plate 42, flange 45, opener (opener) abutting part 46, bottom line hole 44 and bottom line groove 49.Interior rotating shuttle 4 with shuttle 6(with reference to Fig. 1) be contained in and utilize shuttle pressing plate 42 to press shuttle 6 from the top and prevent that shuttle 6 from coming off under the state in the shuttle accommodation section 47.As shown in Figure 1, rotating shuttle rotation prevention portion 141, axle 143, shuttle pressing plate 142, flange part (not shown), opener abutting part 146, bottom line hole (not shown) and bottom line groove (not shown) in the interior rotating shuttle 14 of horizontal rotary hook 12 comprises.Because the structure of horizontal rotary hook 12 is identical with the structure of horizontal rotary hook 2, so following detailed.
Interior rotating shuttle rotation prevention portion 41 is outstanding tabular projections of radial outside of the inside rotating shuttle 4 in upper end (end of an opposite side with diapire) from sidewall 48.Interior rotating shuttle rotation prevention portion 41 enters into first abutting part 71 of needle plate 1 and the gap 73(between second abutting part 72 with reference to Fig. 2) in.When under the state of interior rotating shuttle 4 with free rotation mode and outer rotating shuttle 3 tablings, making outer rotating shuttle 3 rotations, make masterpiece that interior rotating shuttle 4 is rotated to the direction identical with the rotation of outer rotating shuttle 3 for interior rotating shuttle 4.But the interior rotating shuttle rotation prevention portion 41 and second abutting part 72 that enter in the gap 73 connect and rotating shuttle 4 rotations in stoping.
When the operator was received into shuttle 6 in the shuttle accommodation section 47, the operator drew bottom line and it is stretched out to the outside of shuttle accommodation section 47 from groove 481 from shuttle 6.The operator passes between the leaf spring 56 and sidewall 48 on the outer peripheral face that is fixed on sidewall 48 bottom line that reaches 47 outsides, shuttle accommodation section.56 pairs of bottom lines of leaf spring apply predetermined tension force.The operator makes the bottom line that has passed between leaf spring 56 and the outer peripheral face 48 pass to the inboard of shuttle accommodation section 47 from groove 482.The operator makes the bottom line that has passed 47 inboards, shuttle accommodation section pass bottom line groove 49, and 44 derivation from the bottom line hole.
As shown in Figure 4, bottom surface 40 is looked up and is circular, comprises the bight 40A as the inclined plane that is connected with the outer peripheral face bottom of sidewall 48.Bottom surface 40 is relative with outer rotating shuttle 3.Bottom surface 40 has first notch part 51 that comprises cutting portion 51A and cutting portion 51B.Cutting portion 51A forms by a part of cutting and excising sidewall 48 sides of bight 40A.Cutting portion 51B forms by a part of cutting and excising the cutting portion 51A below that is positioned at bight 40A.First notch part 51 is positioned at ratio rotating shuttle rotation prevention portion 41 with flange part 45 by corresponding position, the end in downstream in the direction (direction of rotation of outer rotating shuttle 3, in Fig. 4 for counterclockwise) of passing through of the upper thread of interior rotating shuttle 4.This position is corresponding with the position that upper thread enters between interior rotating shuttle 4 and the outer rotating shuttle 3.That is first notch part 51 position between rotating shuttle 3 and the interior rotating shuttle 4 outside the upper thread that flange part 45 catches the spur 32 of outer rotating shuttle 3 is put into.The length in path when first notch part, 51 shortening flange parts 45 are put into upper thread between outer rotating shuttle 3 and the rotating shuttle 4.Therefore, when upper thread by between interior rotating shuttle rotation prevention portion 41 and the abutting part 7 time, compare when not being provided with first notch part 51, first notch part 51 can shorten the length of passing the upper thread between outer rotating shuttle 3 and the interior rotating shuttle 4.The take-up of the upper thread when therefore, interior rotating shuttle 4 can suppress thread take-up tension lever and provokes upper thread is bad.
As shown in Figure 5, interior rotating shuttle 4 is upward leaning on the position in downstream to have protuberance 53 than interior rotating shuttle rotation prevention portion 41 in the direction (direction of rotation of outer rotating shuttle 3 is clockwise direction in Fig. 5) of passing through of upper thread.Protuberance 53 is outstanding from the radial outside of the inside rotating shuttle 4 in the upper end of sidewall 48.The upper surface of protuberance 53 (being positioned at the face of needle plate 1 side) has second notch part 54 in the end of rotating shuttle rotation prevention portion 41 sides.Second notch part 54 is to form to the cutting of oblique below and excision upper surface by the direction upstream side that passes through towards upper thread.Second notch part 54 is the position between rotating shuttle 3 and the interior rotating shuttle 4 outside the upper thread that flange part 45 catches the spur 32 of outer rotating shuttle 3 is put into.Therefore, when upper thread by between interior rotating shuttle rotation prevention portion 41 and the abutting part 7 time, compare when not being provided with second notch part 54, second notch part 54 can shorten the length of passing the upper thread between outer rotating shuttle 3 and the interior rotating shuttle 4.The take-up of the upper thread when therefore, interior rotating shuttle 4 can suppress thread take-up tension lever and provokes upper thread is bad.Variation as shown in Figure 6 is such, and interior rotating shuttle 4 also can necessarily have second notch part 54.
As Fig. 5, shown in Figure 6, sidewall 48 has the 3rd notch part 55 between interior rotating shuttle rotation prevention portion 41 and protuberance 53.The 3rd notch part 55 is from the protuberance 53 in outer peripheral face side rotating shuttle rotation prevention portion 41 downstreams in the radially inner side excision of interior rotating shuttle 4 and formation on the direction of rotation of rotating shuttle 3 outside.The 3rd notch part 55 is positioned at the position of passing through the root on the direction (direction of rotation of outer rotating shuttle 3) at upper thread of rotating shuttle rotation prevention portion 41.The length of the upper thread in passing between rotating shuttle 4 and the outer rotating shuttle 3 reaches the longest on every side in this position.Therefore, when upper thread by between interior rotating shuttle 41 and the abutting part 7 time, compare when not being provided with the 3rd notch part 55, the 3rd notch part 55 can shorten the length of passing the upper thread between outer rotating shuttle 3 and the interior rotating shuttle 4.The take-up of the upper thread when therefore, interior rotating shuttle 4 can suppress thread take-up tension lever and provokes upper thread is bad.
The horizontal rotary hook 20,120 of the Sewing machines of another embodiment is described with reference to Fig. 7～Figure 12.The Sewing machines of another embodiment is the two-needle sewing machine identical with above-mentioned embodiment, comprise be configured in overlook the needle plate 1 that is rectangle about horizontal rotary hook 20,120.Because the structure of the needle plate 1 except horizontal rotating shuttle 20,120 etc. is identical with above-mentioned embodiment, therefore omit explanation.
The detailed construction of horizontal rotary hook 20 is described with reference to Fig. 7, Fig. 8.The above-below direction of Fig. 8 is the above-below direction of horizontal rotary hook 20.Because the structure of horizontal rotary hook 120 is identical with horizontal rotary hook 20, so detailed.
Horizontal rotary hook 20 is positioned at the lower left of needle plate 1.Horizontal rotary hook 20 is the rotating shuttles that are rotated centered by the axis that extends along the vertical direction.Horizontal rotary hook 20 comprises outer rotating shuttle 3, interior rotating shuttle 80, rotary shuttle shaft 34 etc.Because outer rotating shuttle 3 is identical with above-mentioned embodiment, therefore simplify describing in detail.Interior rotating shuttle 80 is entrenched in the outer rotating shuttle 3 with free rotation mode.Cap 90 can be loaded and unloaded on interior rotating shuttle 80.The shuttle (not shown) that is wound with bottom line can be received in the cap 90.Horizontal rotary hook 120 is positioned at the lower right of needle plate 1.Horizontal rotary hook 120 has outer rotating shuttle 13, interior rotating shuttle 180 etc.Because outer rotating shuttle 13 is identical with above-mentioned embodiment, so detailed.Interior rotating shuttle 180 is entrenched in the outer rotating shuttle 13 with free rotation mode.The same with cap 90, cap 190 can be loaded and unloaded on interior rotating shuttle 180.
Outer rotating shuttle 3 can be received into interior rotating shuttle 80 in the interior rotating shuttle accommodation section 31.The slot part 35 of rotating shuttle accommodation section 31 in flange part 88 by rotating shuttle 80 in making is embedded in, thus slot part 35 so that the mode that interior rotating shuttle 80 can rotate support in rotating shuttle 80.Spur 32 catches the ring of upper threads, around the periphery of interior rotating shuttle 80 upper thread is staggered on the bottom line, forms needle tracking.Rotating shuttle pressing plate 33 is pressed interior rotating shuttle 80 from the top.
The structure of interior rotating shuttle 80 is described with reference to Fig. 8～Figure 12.Interior rotating shuttle 80 is embedded in the interior rotating shuttle accommodation section 31 of outer rotating shuttle 3, can rotate independently with outer rotating shuttle 3.Interior rotating shuttle 80 comprises shuttle accommodation section 82, axle 85, lid pressing plate 86, interior rotating shuttle rotation prevention portion 84 and the flange part 88 etc. that can load and unload cap 90.Interior rotating shuttle 80 is installed at the cap 90 that will accommodate shuttle (omit diagram) to utilize under the state of shuttle accommodation section 82 and covers pressing plate 86 and press cap 90 from the top and prevent that shuttle from coming off.As shown in Figure 7, the interior rotating shuttle 180 of horizontal rotary hook 120 comprises shuttle accommodation section (omitting diagram), axle 185, lid pressing plate 186, interior rotating shuttle rotation prevention portion 184 and the flange part (omitting diagram) etc. that can load and unload cap 90.Because the structure of horizontal rotary hook 120 is identical with the structure of horizontal rotary hook 20, therefore, following detailed.
Interior rotating shuttle rotation prevention portion 84 is to be upper wall portions 832 in detail from sidewall 83() the outstanding tabular projection of radial outside of the inside rotating shuttle 80 in upper end.Interior rotating shuttle rotation prevention portion 84 enters in first abutting part 71 and the gap 73 between second abutting part 72 of needle plate 1.When under the state of interior rotating shuttle 80 with free rotation mode and outer rotating shuttle 3 tablings, making outer rotating shuttle 3 rotations, make masterpiece that interior rotating shuttle 80 is rotated to the direction identical with the rotation of outer rotating shuttle 3 for interior rotating shuttle 80.But the interior rotating shuttle rotation prevention portion 84 and second abutting part 72 that enter in the gap 73 connect and the rotation of rotating shuttle 80 in stoping.Flange part 88 is outstanding along the radial outside of the inside rotating shuttle 80 of the outer peripheral face of peripheral part 831.Flange 88 is arranged on the upper end of peripheral part 831 with certain width.
The peripheral part 91 of cap 90 has bottom line hole 92 and bottom line groove 93(with reference to Figure 11, Figure 12).Bottom line hole 92 is formed in the central authorities of above-below direction of peripheral part 91 a little by the through hole of upside.The outer derivation of the inside rotating shuttle 80 of bottom line that the shuttles in being contained in cap 92 are drawn in bottom line hole 92.Bottom line groove 93 is to the groove of bottom line hole 92 linearly formation from the lower end of cap 90.Bottom line groove 93 guides to bottom line hole 92 with bottom line.Bottom line hole 92 is being positioned near the notch part 96 and is being positioned at than notch part 96 position on the lower between notch part 96 and the opener abutting part 94.Bottom line groove 93 also can be for example from the bottom line hole 92 with the lower end of cap 90 horizontal-extending, at right angles crooked and further extend to the font of falling L of lower end abreast.
In the rotating shuttle 80 time, the operator is received into shuttle in the cap 90 in shuttle that the operator will be wound with bottom line is received into.The operator draws bottom line and bottom line is stretched out to the outside of cap 90 from groove (omit diagram) from shuttle.Between the leaf spring 911 and peripheral part 91 that the operator passes the bottom line outside above-mentioned groove reaches cap 90 to be fixed on the peripheral part 91.911 pairs of bottom lines of leaf spring apply predetermined tension force.The operator makes the bottom line that has passed between leaf spring 911 and the peripheral part 91 pass to the inboard of cap 90 from another groove (not shown).The operator makes the bottom line of the inboard of having passed cap 90 pass to bottom line groove 93, and 92 derivation from the bottom line hole.The align sidewall 83(of notch part 96 and interior rotating shuttle 80 of cap 90 of operator is upper wall portions 832 in detail) the position, cap 90 is entrenched on the shuttle accommodation section 82.
As shown in Figure 9, bottom surface 97 is looked up and is circular, comprises the bight 97A as the inclined plane that is connected with the peripheral part bottom of sidewall 83.Bottom surface 97 has first notch part 89 that comprises cutting portion 89A and cutting portion 89B.Cutting portion 89A forms by a part of cutting and excising sidewall 83 sides of bight 97A.Cutting portion 89B forms by a part that is positioned at cutting portion 89A below of cutting and excising bight 97A.First notch part 89 overlook under the state the upper thread of interior rotating shuttle 80 pass through direction (direction of rotation of outer rotating shuttle 3) be positioned at than rotating shuttle fixed part 84 by corresponding position, the end of the flange part 88 in downstream.This position is corresponding with the position that upper thread enters between interior rotating shuttle 80 and the outer rotating shuttle 3.That is, the position of first notch part 89 is positions that upper thread that the spur 32 for outer rotating shuttle 3 catches passes through.Therefore, in the time of between upper thread is by the abutting part 7 of interior rotating shuttle rotation prevention portion 84 and needle plate, compare when not being provided with first notch part 89, first notch part 89 can shorten the length of passing the upper thread between outer rotating shuttle 3 and the interior rotating shuttle 80.The take-up of the upper thread when therefore, interior rotating shuttle 80 can suppress thread take-up tension lever and provokes upper thread is bad.
As shown in figure 10, cap 90 is upward leaning on the position in downstream to have the 4th notch part 98A than interior rotating shuttle rotation prevention portion 84 in the direction (direction of rotation of outer rotating shuttle 3 is clockwise direction in Figure 10) of passing through of upper thread.The 4th notch part 98A passes through the direction upstream side to position that the outer circumferential side of the upper surface of oblique below cutting cap 90 (being positioned at the face of needle plate 1 side in cap 90 is installed on the rotating shuttle 80 time) 98 forms towards upper thread.In the time of between upper thread is by the abutting part 7 of interior rotating shuttle rotation prevention portion 84 and needle plate, compare when not being provided with the 4th notch part 98A, the 4th notch part 98A can shorten the length of passing the upper thread between outer rotating shuttle 3 and the interior rotating shuttle 80.The take-up of the upper thread when therefore, the interior rotating shuttle 80 that cap 90 is installed can suppress thread take-up tension lever and provokes upper thread is bad.As Figure 11, shown in Figure 12, cap 90 also can not have the 4th notch part 98A on upper surface 98.
As Figure 10～shown in Figure 12, the sidewall 83 of interior rotating shuttle 80 or cap 90 are gone up and are had the 5th notch part 99 than interior rotating shuttle rotation prevention portion 84 by the position in downstream in the direction (direction of rotation of outer rotating shuttle 3) of passing through of upper thread.The 5th notch part 99 is to have excised the position that the upper outer edges of the upper end of sidewall 83 or cap 90 forms from outer peripheral face side direction radially inner side.The 5th notch part 99 is positioned at the position of passing through the root on the direction of the upper thread of rotating shuttle rotation prevention portion 84.The length of the upper thread in passing between rotating shuttle 80 and the outer rotating shuttle 3 reaches the longest on every side in this position.In the time of between upper thread is by the abutting part 7 of interior rotating shuttle rotation prevention portion 84 and needle plate, compare when not being provided with the 5th notch part 99, the 5th notch part 99 can shorten the length of passing the upper thread between outer rotating shuttle 3 and the interior rotating shuttle 80.The take-up of the upper thread when therefore, interior rotating shuttle 80 or cap 90 can suppress thread take-up tension lever and provoke upper thread is bad.
The shape of the spur 32 of the outer rotating shuttle 3 during with reference to spur 232 contrasts of Figure 13～Figure 18 explanation and in the past outer rotating shuttle 30.Spur 32 has as the spur cutting portion 32A, the spur cutting portion 32B that have implemented the position that machining forms at lateral surface.The end 232A that the radially inner side of spur cutting portion 32A, the outside rotating shuttle 3 of spur cutting portion 32B has excised the outer peripheral face that holds together line portion of spur in the past 232 shown in Figure 180 forms.The member that spur 32 is equivalent to make the radial thickness attenuation of holding together line portion of spur 232 in the past to form.Hold together line portion and be the part for the hook upper thread.Compared with the past, spur 32 can shorten after the upper thread that held together line portion hook, pass outside the length of upper thread between rotating shuttle 3 and the interior rotating shuttle 4 time.The take-up of the upper thread when therefore, horizontal rotary hook 2 can suppress thread take-up tension lever and provokes upper thread is bad.
As shown in figure 15, spur 32 is shorter than spur in the past shown in Figure 16 232.That is, compare with spur 232, the spur radius of spur 32 is little.The spur radius is from as the base portion of the root of the spur angle with respect to the axis of rotation of outer rotating shuttle to top ends.The spur radius is more little, spur more can in the time more early, make upper thread pass outside action between rotating shuttle and the interior rotating shuttle.Thereby horizontal rotary hook 2 is compared with the horizontal rotary hook with outer rotating shuttle 30 in the past, can shorten the length of passing the upper thread between outer rotating shuttle 3 and the interior rotating shuttle 4, and the take-up that can suppress upper thread is bad.Specifically, as shown in figure 16, the spur radius θ 1 of spur 232 in the past is about 52 degree.As shown in figure 15, the spur radius θ 2 of spur 32 is in the scope of 42 degree～47 degree.That is, the angle θ 3 as spur radius θ 1 and the difference of spur radius θ 2 is 5 degree～10 degree.Spur 32 ratios spur 232 short and angle θ 3 corresponding parts in the past.Therefore, horizontal rotary hook 2 can in the time more early, make upper thread pass outside action between rotating shuttle 3 and the interior rotating shuttle 4.If this time in advance, then upper thread finishes in the time more early by between outer rotating shuttle 3 and the interior rotating shuttle 4.Therefore, when spur 32 make upper thread pass outside between rotating shuttle 3 and the interior rotating shuttle 4 after, the take-up of the upper thread that horizontal rotary hook 2 can suppress thread take-up tension lever when provoking upper thread is bad.When angle θ 3 spent less than 5, the time of above-mentioned action was compared with the past than growing and can't shifting to an earlier date.When angle θ 3 spends greater than 10, exist spur 32 to catch the possibility of upper thread failure.Therefore, expect that above-mentioned angle θ 3 is 5 degree～10 degree.
The utility model can also carry out various distortion except above-mentioned embodiment.For example, interior rotating shuttle 4 both can comprise the whole of first notch part 51, second notch part 54, the 3rd notch part 55, also can comprise any one or two in above-mentioned three notch parts.Similarly interior rotating shuttle 80 both can comprise the first whole notch parts 89, the 4th notch part 98A, the 5th notch part 99, also can comprise any one or two in above-mentioned three notch parts.Also can make the outer rotating shuttle 3 that comprises spur 32 and include one or more interior rotating shuttle 4 in the above-mentioned notch part, 80 combined.Can to be that section is circular-arc by grinding also make the thickness attenuation to the lateral surface of spur 32.Spur 32 also can not have spur cutting portion 32A, spur cutting portion 32B.
Sewing machines also can comprise be used to rotating shuttle 4,80 in making to the direction rotation opposite with the direction of rotation of outer rotating shuttle 3 and rotating shuttle rotation prevention portion 41,84 with abutting part 7 between the opener in making gap.
Claims (15)
1. use in sewing machine horizontal rotary hook comprises:
Outer rotating shuttle (3,13), it can pivot; And
Interior rotating shuttle (4,14,80,180), its with can with respect to above-mentioned outer rotating shuttle in relative rotation mode be bearing in the above-mentioned outer rotating shuttle, and have diapire, this diapire has and above-mentioned outer rotating shuttle opposed bottom surface (40,97);
This use in sewing machine horizontal rotary hook (2,12,20,120) is characterised in that,
Above-mentioned outer rotating shuttle comprises the spur (32) that can catch upper thread,
Rotating shuttle comprises in above-mentioned:
Sidewall (48,83), its from least a portion of the periphery of above-mentioned diapire to extending axially;
Interior rotating shuttle rotation prevention portion (41,141,84,184), it is from outstanding to radial outside as the first end in the end of the above-mentioned above-mentioned sidewall that is located axially at an opposite side with above-mentioned diapire, the abutting part (7,17) of the needle plate (1) by being connected to the Sewing machines relative with above-mentioned first end go up stop above-mentioned in rotating shuttle rotate with above-mentioned outer rotating shuttle; And
First notch part (51,89), it is arranged on the direction of rotation of rotating shuttle outside above-mentioned of above-mentioned bottom surface than the position of rotating shuttle rotation prevention portion in above-mentioned by the downstream.
2. use in sewing machine horizontal rotary hook according to claim 1 is characterized in that,
Rotating shuttle comprises the flange part (45,88) on the outer peripheral face that is formed on above-mentioned sidewall in above-mentioned,
The direction of rotation with rotating shuttle outside above-mentioned that above-mentioned first notch part is arranged on above-mentioned bottom surface is positioned at than the end corresponding position of above-mentioned rotating shuttle rotation prevention portion by the above-mentioned flange part in downstream.
3. use in sewing machine horizontal rotary hook according to claim 2 is characterized in that,
Rotating shuttle (4,14) comprises protuberance (53) in above-mentioned, and this protuberance (53) is being given prominence to above-mentioned radial outside from the above-mentioned first end of above-mentioned sidewall (48) by the position in downstream than rotating shuttle rotation prevention portion in above-mentioned on the above-mentioned direction of rotation,
Above-mentioned protuberance has second notch part (54), and this second notch part (54) is the above-mentioned direction of rotation upstream-side-end of the face of the above-mentioned needle plate side of being positioned at of above-mentioned protuberance to be excised a part towards above-mentioned direction of rotation upstream side form.
4. use in sewing machine horizontal rotary hook according to claim 3 is characterized in that,
Above-mentioned protuberance has the 3rd notch part (55), and the 3rd notch part (55) is to form towards the part that above-mentioned radially inner side has excised the above-mentioned direction of rotation downstream of the above-mentioned rotating shuttle rotation prevention portion of being positioned at of above-mentioned protuberance.
5. use in sewing machine horizontal rotary hook according to claim 3 is characterized in that,
Rotating shuttle comprises in above-mentioned:
Axial region (43), it extends axially to above-mentioned from above-mentioned diapire, can be inserted in the hole of central authorities of the shuttle that is wound with bottom line;
Side-looking is the shuttle pressing plate (42) of L font, and it is bearing in the top ends of above-mentioned axial region in the mode that can rotate, above-mentioned shuttle can be fixed on above-mentioned on the rotating shuttle; And
Sidewall notch part (50), it is arranged on the above-mentioned first end of above-mentioned sidewall, can insert for the top ends of above-mentioned shuttle pressing plate.
6. use in sewing machine horizontal rotary hook according to claim 4 is characterized in that,
Rotating shuttle comprises in above-mentioned:
Axial region (43), it extends axially to above-mentioned from above-mentioned diapire, can be inserted in the hole of central authorities of the shuttle that is wound with bottom line;
Side-looking is the shuttle pressing plate (42) of L font, and it is bearing in the top ends of above-mentioned axial region in the mode that can rotate, above-mentioned shuttle can be fixed on above-mentioned on the rotating shuttle; And
Sidewall notch part (50), it is arranged on the above-mentioned first end of above-mentioned sidewall, can insert for the top ends of above-mentioned shuttle pressing plate.
7. use in sewing machine horizontal rotary hook according to claim 2 is characterized in that,
This use in sewing machine horizontal rotary hook also comprises cap (90), and this cap (90) can hold the shuttle that is wound with bottom line, and can be installed on above-mentioned interior rotating shuttle (80,180), and can unload from above-mentioned interior rotating shuttle (80,180),
Above-mentioned cap has upper surface (98), when above-mentioned cap is installed on above-mentioned in during rotating shuttle, this upper surface (98) is positioned at above-mentioned needle plate side,
Above-mentioned upper surface is leaning on the position in downstream to have the 4th notch part (98A) than rotating shuttle rotation prevention portion in above-mentioned on the above-mentioned direction of rotation.
8. use in sewing machine horizontal rotary hook according to claim 7 is characterized in that,
Above-mentioned sidewall or above-mentioned cap have the 5th notch part (99), and the 5th notch part (99) is to form from the part that the above-mentioned radially inner side of outer peripheral face side direction excises above-mentioned sidewall or above-mentioned cap than the place of rotating shuttle rotation prevention portion in above-mentioned by the downstream on the above-mentioned direction of rotation.
9. according to each described use in sewing machine horizontal rotary hook in the claim 1 to 8, it is characterized in that,
Above-mentioned spur has by the radially inner side to above-mentioned outward turning shuttle and has excised the spur cutting portion (32A, 32B) that the end of outer peripheral face forms.
10. according to each described use in sewing machine horizontal rotary hook in the claim 1 to 8, it is characterized in that,
Be in the scope of 42 degree～47 degree from base portion to the angle of top ends with respect to above-mentioned axle of above-mentioned spur.
11. use in sewing machine horizontal rotary hook according to claim 9 is characterized in that,
Be in the scope of 42 degree～47 degree from base portion to the angle of top ends with respect to above-mentioned axle of above-mentioned spur.
12. a Sewing machines is characterized in that,
This Sewing machines comprises each described use in sewing machine horizontal rotary hook in the claim 1 to 8.
13. a Sewing machines is characterized in that,
This Sewing machines comprises the described use in sewing machine horizontal rotary hook of claim 9.
14. a Sewing machines is characterized in that,
This Sewing machines comprises the described use in sewing machine horizontal rotary hook of claim 10.
15. a Sewing machines is characterized in that,
This Sewing machines comprises the described use in sewing machine horizontal rotary hook of claim 11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011289624A JP2013138700A (en) | 2011-12-28 | 2011-12-28 | Shuttle for sewing machine and sewing machine |
| JP2011-289624 | 2011-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203049233U true CN203049233U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220741227 Expired - Fee Related CN203049233U (en) | 2011-12-28 | 2012-12-28 | Horizontal rotating shuttle for sewing machine and sewing machine |
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| Country | Link |
|---|---|
| JP (1) | JP2013138700A (en) |
| CN (1) | CN203049233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904799A (en) * | 2017-12-26 | 2018-04-13 | 池州市旭豪机械有限公司 | A kind of sewing-machine rotating shuttle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0233752Y2 (en) * | 1987-10-31 | 1990-09-11 | ||
| JPH0616610Y2 (en) * | 1990-07-12 | 1994-05-02 | 株式会社廣瀬製作所 | Full turn bite |
| JP2817755B2 (en) * | 1992-08-05 | 1998-10-30 | 三菱電機株式会社 | Horizontal stitch of sewing machine and this operation method |
-
2011
- 2011-12-28 JP JP2011289624A patent/JP2013138700A/en active Pending
-
2012
- 2012-12-28 CN CN 201220741227 patent/CN203049233U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904799A (en) * | 2017-12-26 | 2018-04-13 | 池州市旭豪机械有限公司 | A kind of sewing-machine rotating shuttle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013138700A (en) | 2013-07-18 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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