CN1470700A - Needle driving mechanism of sewing machine - Google Patents
Needle driving mechanism of sewing machine Download PDFInfo
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- CN1470700A CN1470700A CNA031489982A CN03148998A CN1470700A CN 1470700 A CN1470700 A CN 1470700A CN A031489982 A CNA031489982 A CN A031489982A CN 03148998 A CN03148998 A CN 03148998A CN 1470700 A CN1470700 A CN 1470700A
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- shank
- drive link
- needle bar
- pin parts
- eedle
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Abstract
The present invention provides a needle driving mechanism, comprising: a needle bar (20) which supports a sewing machine needle at its distal end part and supported by a sewing machine frame (1) in the state of being reciprocative along a longitudinal direction of its own; a needle driving arm (40) for imparting driving force of the reciprocating operation of this needle bar to the needle bar; and a needle bar driving link (50) for connecting the needle bar with the needle driving arm. The needle bar driving link is connected rotatably by pin members (22 and 42a) with respect to either of the needle bar and the needle driving arm. The respective pin members are formed of steel material, and a ceramic coating film consisting of chromium nitride is formed on a sliding face of at least the respective pin members and the needle bar driving link. The needle bar driving link is formed of light metal, and a hard anodization film is formed on a sliding face of at least the needle bar driving link and the respective pin members. The invention improves the durability of the needle driving mechanism in the state of oil-free.
Description
Technical field
The present invention relates to a kind of sewing machine needle bar driving mechanism, relate in particular to and realize that sewing machine needle does not have the sewing machine needle bar driving mechanism of fuel feedingization on every side.
Background technology
Sewing machines in the past generally has the lubricating structure of forcing fuel system.But the Sewing machines that this has the lubricating structure of forcing fuel system has because of leakage of oil produces and pollutes cloth or Sewing machines possibility on every side.
But fuel feeding is indispensable on the industrial sewing machines that thousands of commentaries on classics with per minute drive, and drives Sewing machines if do not carry out fuel feeding, then can cause the scaling loss of part because of friction, and its durability can be reduced to complete unpractical stage.
To this,, adopted and reduced fuel delivery and carry out micro-fuel system or the wicking mode of fuel feeding is carried out at the regulation position, to realize preventing the leakage of oil of Sewing machines with it by strand shape wick as the countermeasure of such leakage of oil.
But, because micro-fuel feeding or wicking, all be using lubricating oil to be prerequisite, so even reached the purpose of reduction leakage of oil amount, but leakage of oil still is inevitable.In addition, owing to reduced the fuel delivery of lubricating oil, for example, in-house as the overseam Sewing machines on the Sewing machines with high surface pressing position or high-speed slide position, can not be brought up to sufficient lubricant effect.
The object of the present invention is to provide a kind of above-mentioned discomfort in the past of improving, avoid oil leak, even to the also abundant durable needle bar of sewing machine driving mechanism of the high surface pressing of high speed.
Summary of the invention
The present invention's 1 needle bar of sewing machine driving mechanism, have: being supported on the sewing machine frame 1 and supporting Sewing needles with its leading section also can be along the reciprocating shank 20 of the length direction of self, give the eedle actuating arm 40 of the driving force of this its reciprocating action of shank, the shank drive link 50 that connects shank and eedle actuating arm, employing is with pin parts 22,42a rotatably is connected the shank drive link with shank any one with the eedle actuating arm, each pin parts is made by steel, and at least at these each pin parts, with the coated film that forms the pottery that constitutes by chromium nitride on the sliding surface of shank drive link, the shank drive link is made of light metal, and at least in this shank drive link, with the structure that forms horniness anode oxide film on the sliding surface of each pin parts.
As above-mentioned overseam Sewing machines, when carrying out that Sewing needles passed overlapping cloth, particularly along with high speed produces high surface pressing at each position of supporting eedle, so require to have durability to the fretting that results from sliding position.
On the other hand, owing to support the top that the structure of Sewing needles is configured in cloth usually, lubricating oil passes to Sewing needles by shank, and the result has become to pollute the main cause of cloth, so the special structure of wishing to have this no fuel feedingization.
At this, 1 structure according to the invention described above, be the structure that the reciprocating motion of eedle actuating arm can be passed to sleekly shank, this is realized that in this structure raising is easy to generate durability aging, that be used to connect each pin parts of shank drive link and other two structures and bear its position especially.
That is, the periphery of pin parts with the shank drive link part of sliding takes place at least, form chromium nitride film, corresponding with it, at the part that the generation and the pin parts of shank drive link slide, formation horniness anode oxide film.They all are potteries, and its characteristic is to have heat resistance, ABRASION RESISTANCE, corrosion resistance, can bring into play the high-durability to the frictional heat of mutual slip.Therefore, also can be fully anti-because of there not being the fretting of oiling around the Sewing needles.
And, according to said structure,, form porous layer to form horniness anode oxide film because of on the sliding surface of shank drive link, can preserve lubricating grease at the porous part of this porous layer.Therefore, when on this sliding surface, carrying out the lubricating grease preservation, can make the smooth and easy cunning of slip between pin parts and the shank drive link, and can avoid because of the aging of sliding friction heat and wearing and tearing because of sliding.On the other hand, when using the butter different, can not produce pollution because of leakage of oil with aqueous lubricating oil yet.
The present invention's 2 needle bar of sewing machine driving mechanism has and the present invention's 1 same structure, and the coated film of each pin parts has adopted the structure that forms with ion plating method.
According to said structure, can with the present invention's the 1 same durability that realizes improving the pin parts and bear its position, and owing to form chromium nitride film with ion plating method, so for example with thermosol spraying process formation plated film compare, the thickness that forms can approach significantly, and owing to do not carry out heat in the thermosol spraying process, so can not produce the characteristic variations of pin parts base material or aging.
In addition, good with the plated film tack of ion plating method, to peeling off of sliding, aging durability arranged.
The present invention's 3 needle bar of sewing machine driving mechanism has and the present invention's 1 or 2 same structures, and adopts aluminium or its alloy structure as the light metal that forms the shank drive link.
According to said structure because the base material of shank drive link is aluminium or its alloy of light specific gravity, so between eedle actuating arm and shank, reduced during high-speed driving result from and the pin parts between surface pressing.
The present invention's 4 needle bar of sewing machine driving mechanism has and the present invention's 1,2 or 3 same structures, and adopts the SKH material as the steel that form each pin parts.
According to said structure, the SKH in the steel even also be difficult to occurrence features variation or aging at high temperature, even therefore can both keep its intensity when the pin parts are formed ceramic membrane or when the slip of using, and keeps durability.
Description of drawings
Fig. 1 is the front view of the overseam Sewing machines partial cutaway of the embodiment of the invention.
Fig. 2 is the X-X profile of Fig. 1.
Fig. 3 is the key diagram of the connection status of expression eedle actuating arm, shank and shank drive link shown in Figure 1.
Fig. 4 is the curve map about the durability experiment result of pin parts and shank drive link, expression the present invention and other comparative example.
Fig. 5 is the exploded perspective view of other mechanical structure examples of needle bar drive device.
Among the figure: 1-sewing machine frame, 10, the needle drive of 10A-Sewing machines, 20, the 20A-shank, 22, the 22A-first pin parts, 40,40A-eedle actuating arm, 50,50A-shank drive link, 51, the 52-connecting portion, M-eedle.
The specific embodiment
(all formations of the embodiment of the invention)
The needle bar of sewing machine driving mechanism 10 of the embodiment of the invention is described referring to figs. 1 through Fig. 4.Fig. 1 uses lockstitching a border or the front view of overseam Sewing machines 100 partial cutaway that overseam etc. is made of needle bar drive device 10, Fig. 2 is the profile along the X-X line of Fig. 1, and Fig. 3 is the key diagram of the connection status of expression eedle actuating arm 40, shank 20 and shank drive link 50 shown in Figure 1.Below, overseam Sewing machines 100 is placed horizontal plane is that prerequisite describes, with its vertical direction is above-below direction, is left and right directions with the transverse direction on Fig. 1 of a perpendicular direction, being fore-and-aft direction with all vertical direction (transverse direction of Fig. 2) of above-below direction and left and right directions.
Needle bar drive device 10, as shown in Figure 1, have: be supported on the sewing machine frame 1 and with its leading section support eedle and can be along the reciprocating shank 20 of the length direction of self, give the eedle actuating arm 40 and the shank drive link 50 that is connected shank 20 and eedle actuating arm 40 of these shank 20 reciprocating driving forces.
(shank)
This shank 20, as shown in Figure 2, the pars intermedia of its length direction is solid, total length all is hollow in addition.In addition, the solid section of shank 20 along being provided with through hole 21 with center line C vertical direction, in this through hole 21, is running through the second pin parts 22 that are used for connecting rotationally flexibly shank drive link 50 described later.And these second pin parts 22 self can not be fixed on through hole 21 inside by limit screw 23 rotationally.Therefore, when shank drive link 50 was rotated with respect to shank 20, the second pin parts 22 did not slide 20 of shanks, and slide between the sliding contacting part of shank drive link 50.
(eedle actuating arm)
One end 41 of eedle actuating arm 40, the rotation that extends with direction forwards, backwards is that the center is fixedly connected on the eedle driving shaft 30 that is supported on the sewing machine frame 1 rotationally.This eedle driving shaft 30, with not shown structure, rotational angle range is in accordance with regulations carried out back and forth rotating drive of high speed.Therefore, eedle actuating arm 40, its pivoting end 42 is the center, carries out high speed swinging motion in the angular range of afore mentioned rules with eedle driving shaft 30.Concrete is, the pivoting end 42 of eedle actuating arm 40 roughly back and forth rotates along the vertical direction, and its slewing area is between the solid line and double dot dash line of Fig. 1.
The pivoting end 42 of eedle actuating arm 40 as shown in Figure 3, divaricates, the shank drive link 50 of packing in the inboard of bifurcate end and shank 20.And the pivoting end 42 of eedle actuating arm 40 is with shank drive link 50 1 ends, by all connecting rotationally flexibly between mutually along the first pin parts 42a, the 42a of fore-and-aft direction configuration.Respectively the first pin parts 42a, 42a are fixed on the eedle actuating arm 40 un-rotatably by not shown screw.Therefore, when shank drive link 50 was rotated with respect to eedle actuating arm 40, each the first pin parts 42a, 42a be in 40 slips of eedle actuating arm, and slide between the sliding contacting part of shank drive link 50.
(shank drive link)
Shank drive link 50, as mentioned above, on an end 51 of its length direction, can be connected rotationally each other with the pivoting end of eedle actuating arm 40 by the first pin parts 42a, 42a, on the other end 52 of its length direction, can be connected rotationally each other with shank 20 by the second pin parts 22.In addition, these pin parts 22,42a similarly are provided with along fore-and-aft direction abreast with eedle driving shaft 30.
In addition, this shank drive link 50, at one end the section shape vertical in the portion 51 with its length direction, slightly be the コ word shape as shown in Figure 3.And, so that this open side that slightly is the コ font relative with the open side of two pronged shape portions of above-mentioned eedle actuating arm 40 pivoting ends 42 to mode, by each the first pin parts 42a, 42a shank drive link 50 is connected with eedle actuating arm 40, and packing at shank 20, this slightly is under the state of inside part of コ font, makes the length direction of this shank 20 and the roughly configuration as one man of length direction of shank drive link 50.
(the mutual action of each structure of needle bar drive device)
Shank 20, eedle actuating arm 40 and shank drive link 50 are by the above-described binodal linkage that is connected to become.
Their mutual action now is described, at first, eedle actuating arm 40 is along with the driving of eedle driving shaft 30 makes its pivoting end 42 reciprocating motion in the angular range of Fig. 1.At this moment, because it is the circular arc at center that the pivoting end 42 of eedle actuating arm 40 draws with eedle driving shaft 30, so this pivoting end 42 produces displacement and produce displacement at left and right directions (direction vertical with center line C of saying so exactly) in reciprocal process at above-below direction (the center line C direction of the shank 20 of saying so exactly).And the displacement of the direction up and down of the pivoting end 42 of this eedle actuating arm 40 passes to shank 20 by shank drive link 50, carries out moving up and down of eedle with shank 20.In addition, the displacement that the direction to the left and right of the pivoting end 42 of eedle actuating arm 40 produces is constantly rotated with respect to shank 20 because of shank drive link 50 and to be eliminated.
(shank drive link and each pin parts material and surface treatment)
The overseam Sewing machines 100 of present embodiment about the structure of above-mentioned needle bar drive device 10, is not have fuel feedingization in order to realize, prevents that lubricating oil from passing to eedle and polluting cloth, or pollutes environment around the Sewing machines 100 because of oil leak.
But, according to needle bar drive device 10, because with the moving up and down of the pivoting end 42 of eedle actuating arm 40, pass to shank 20 by shank drive link 50, so the surface pressing that produces between the sliding contacting part of each end 51,52 of each periphery that connects these first and second pin parts 22,42a and shank drive link 50 is because of the inertia force of shank 20 increases.And, under this high surface pressing, between the sliding contacting part of each end 51,52 of each periphery of first and second pin parts 22,42a and shank drive link 50, constantly slide.
For the position of under so high surface pressing, constantly sliding, can not implement not have fuel feeding usually, if implement then obviously to reduce durability or cause scaling loss and can not use at all.
Therefore, according to needle bar drive device 10, at first, all make first and second pin parts 22,42a as base material with steel SKH51 (high-speed steel).These first and second pin parts 22,42a carry out quenching and tempering under the state of base material handles, and after realizing reinforcement, on this whole circumference face that slides, forms the ceramic membrane that is made of chromium nitride.This chromium nitride film is that the ion plating method with a kind of physical vapor deposition forms 2[μ m on the periphery of each pin parts 22,42a] left and right sides thickness.
On the other hand, make shank drive link 50 with aluminium or the aluminium alloy that has more intensity as base material.Aluminium or its alloy and iron are relatively, its proportion only is about 1/3rd, therefore realized the lightweight of shank drive link 50 integral body, and the surface pressing between the sliding contacting part of each end 51,52 of each periphery of each the pin parts 22 that has reduced when moving up and down, to produce, 42a and shank drive link 50.And, consider lightweight, also can adopt magnesium or its alloy, but consider preferably aluminium or its alloy from the intensity aspect.In addition, both ends 51,52 and sliding contact surface pin parts 22,42a of shank drive link 50 is formed the pellumina of horniness anode oxide film.Owing on the surface of this horniness anode oxide film, formed porous layer,, can preserve butter so utilize the loose structure of this porous layer.
Like this, on the outer circumference surface of each pin parts 22,42a, form chromium nitride film, correspondingly with it on the sliding contact surface of shank drive link 50, form horniness anode oxide film, then chromium nitride film still be horniness anode oxide film all be ceramic membrane, have heat resistance, mar proof, corrosion resistance, acid resistance as characteristic, and the frictional heat performance high-durability to producing because of sliding mutually.And, because the coefficient of friction of horniness anode oxide film is low, especially heat resistance is very superior in ceramic membrane for chromium nitride film, thus their combination, between shank drive link 50 and each pin parts 22,42a, brought into play sufficient durability by its fretting that produces that moves up and down.
Fig. 4 be to use various materials and carry out shank drive link and first and second pin parts of various surface-treated same structures, the comparative test result when carrying out the moving up and down of shank 20.As the prerequisite of test, equally the revolution with eedle driving shaft 30 drive sources is 6300[rpm] (the up-down vibration frequency of shank 20 is also identical) obtain its durable time.1. expression is made each pin parts with SUJ2 (bearing steel), make the shank drive link with SCM415 (Chrome molybdenum steel), and the situation of under no fuel feeding, carrying out, 2. expression is made each pin parts with SUJ2 as base material and plating WC/C (tungsten carbide/carbon) film, with SCM415 as the shank drive link, and the situation of under no fuel feeding, carrying out, 3. expression is base material with SUJ2 and plates CrN (Danization Chrome) film makes each pin parts, with SCM415 is that base material and plating NiB (nickel boron) film are made the shank drive link, and the situation of under no fuel feeding, carrying out, 4. expression is base material with SUS440C (stainless steel) and carries out ion Plasma Nitriding Treatment at sliding surface and make each pin parts, make the shank drive link with SCM415, and 5. the situation of carrying out under no fuel feeding represents each pin parts 22 of the needle bar drive device 10 of present embodiment, 42a, shank drive link 50 (use butter).
As shown in Figure 4 as can be known, with the structure of needle bar drive device 10 5., its durable time is 7000 hours, with other comparative example 1.～4. compare, the durability under no fuel feeding situation is obviously superior.In addition, 5. in expression its durable time be 7000 hours, but long duration test still continuing now, the actual durable time is more than 7000 hours.The durable time of sewing machine needle bar driving mechanism of carrying out fuel feeding in the past is generally about 4000 hours, and driving continuously about 5000 hours time also is receiving a mandate of Sewing machines integral body.According to the structure of needle bar drive device 10, expression can make these improve, and has confirmed the durability of no fuel feedingization.
(other)
In addition,, also can use SCM (Chrome molybdenum steel as the base material of each pin parts 22,42a), SKD (alloy tool steel), SUJ (bearing steel), but preferably use at plated film or the high temperature when using under the SKH (high-speed steel) of stability of characteristics.
In addition, being formed at the ceramic membrane of the periphery of each pin parts 22,42a, also can be other potteries that can form epithelium with ion plating method, for example, and TiN (titanium nitride), TiAlN (TiAlN), TiCN (titanium carbonitride), TiC (titanium carbide) etc.But, because these potteries are than CrN (Danization Chrome) heat resistance more or less low, so when the surface pressing height of shank drive link and each pin parts (for example 2.0[MP] more than), had better adopt the CrN film.
(other embodiment of needle bar drive device)
Material and surface-treated thereof about above-mentioned shank drive link 50 of the present invention and each pin parts 22,42a are used, be not limited to the mechanical realization of above-mentioned needle bar drive device 10, so long as the structure that the eedle actuating arm is connected with shank by shank drive link and first and second pin parts, also applicable to the needle bar drive device of other mechanical realizations formations.Below with reference to Fig. 5 these other needle bar drive device 10A is described.
Fig. 5 is the exploded perspective view of needle bar drive device 10A.In this structure, the structure identical with above-mentioned needle bar drive device 10 used identical symbol and omitted its explanation.
Needle bar drive device 10A, have: be supported on that sewing machine frame (omit diagram) is gone up and support eedle M and can be along the shank drive link 50A of the reciprocating shank 20A of the length direction of self, the eedle actuating arm 40A that gives the driving force of this reciprocating action of this shank 20A, connection shank 20A and eedle actuating arm 40A with its leading section, this shank drive link 50A is corresponding with shank 20A and eedle actuating arm 40A respectively and can be connected with it with the first pin parts 22A and the second pin parts 42Aa rotationally.
Such needle bar drive device 10A, main is not at two places up and down and just downside supporting needle rod 20A this point is different with needle bar drive device 10, along with the structure of this each one of difference is also variant slightly.
Above-mentioned shank 20A, it only can be supportted on sewing machine frame to the reciprocating motion twelve Earthly Branches below haply by shank Lower shaft sleeve 3 at the length direction pars intermedia.The bottom of shank 20A is installed with eedle M along its length direction, and the upper end can be connected with the end of shank drive link 50A mutually rotationally by the first pin parts 22A.
In this structure, when eedle actuating arm 40A back and forth rotated, by shank drive link 50A, shank 20A moved up and down.
And the first pin parts 22A is limited it by limit screw and slides with respect to shank 20A rotation and with respect to the end of shank drive link 50A.In addition, the second pin parts 42Aa is limited it by limit screw and slides with respect to eedle actuating arm 40A rotation and with respect to the other end of shank drive link 50A.And, first and second pin parts 22A, 42Aa, the same with above-mentioned pin parts 22,42a, formed Danization Chrome film as base material and on its outer circumference surface with SKH51.And, shank drive link 50A with aluminium or its alloy as base material and with the sliding contact surface of each pin parts 22A, 42Aa on form horniness anode oxide film.
Therefore, as when being applied to the overseam Sewing machines, even be high surface pressing between shank drive link 50A and each pin parts 22A, the 42Aa and slide at high speed, also can bring into play high-durability to fretting.
(invention effect)
According to the present invention 1, sliding part with pin parts and shank drive link, the pin component side is formed Danization Chrome film, shank drive link side is formed horniness anode oxide film, realize heat resistance, ABRASION RESISTANCE, corrosion resistance and reach acid proof raising with this, and realize raising the durability that is easy to generate wearing part.Therefore, can realize wishing no fuel feedingization and realize its high speed, can avoid the no fuel feedingization at the eedle drives structure position that is difficult to realize because of high surface pressing and cloth that produces because of leakage of oil or pollution on every side effectively.
In addition, even particularly carried out the high speed of the structure of eedle driving, the overseam Sewing machines of high surface pressingization, also can realize no fuel feedingization according to its durability.
And, form porous layer owing to be used in the method that forms horniness anode oxide film on the sliding surface of shank drive link, so preserve butter on the surface of porous chamber that can be by forming porous layer using butter on this sliding surface.In addition, when on porous layer, having preserved butter, can make the slip between pin parts and the shank drive link smooth and easy, can avoid to realize the long lifetime of pin parts and shank drive link because of the aging of sliding friction heat and wearing and tearing because of sliding.And,, can not produce the pollution that takes place because of leakage of oil even when using butter yet.
According to the present invention 2 owing to carry out the film forming of Danization Chrome with ion plating method, so can form thin thickness, and the level and smooth processing after not needing film to form can realize the raising of productivity ratio.In addition, do not need the heat of thermosol gunite,, can keep its durability to heavens so can avoid the variation of pin parts substrate property or aging effectively.
In addition, the Danization Chrome film that forms with ion plating method to the tack height of pin parts, can prevent for the peeling off of the film that slides, aging, and can further realize the raising of durability.
According to the present invention 3 because shank drive link base material is aluminium or its alloy of light specific gravity, so it is from heavy and light, produce in the time of reducing high-speed driving between eedle actuating arm and the shank and the pin parts between surface pressing.Therefore, reduced the generation of the aging and wearing and tearing of the mutual sliding surface of shank drive link and pin parts both sides,, also can realize their long lifetime even under no fuel feeding environment.
According to the present invention 4, owing to adopt the steel of SKH as pin parts base material, even, can keep its intensity during when forming ceramic membrane or because of the slip used, even under unlubricated situation, also can keep durability so when high temperature, also be difficult to produce its characteristic variations or aging.
Claims (4)
1. sewing machine needle bar driving mechanism, have: be supported on the sewing machine frame and with its leading section support Sewing needles and can along the reciprocating shank of the length direction of self, give the driving force of this its reciprocating action of shank the eedle actuating arm, connect the shank drive link of described shank and described eedle actuating arm, and have with pin parts with described shank drive link rotatably with any one structure that is connected of described shank and described eedle actuating arm, it is characterized in that:
Described each pin parts are made by steel, and at least these each pin parts, with the sliding surface of described shank drive link on, form the coated film of the pottery that constitutes by chromium nitride,
Described shank drive link is made of light metal, and at least this shank drive link, with the sliding surface of described each pin parts on, form horniness anode oxide film.
2. needle bar of sewing machine driving mechanism according to claim 1 is characterized in that: the coated film of described each pin parts is formed by ion plating method.
3. needle bar of sewing machine driving mechanism according to claim 1 and 2 is characterized in that: the light metal that forms described shank drive link is aluminium or its alloy.
4. according to claim 1,2 or 3 described needle bar of sewing machine driving mechanisms, it is characterized in that: with the steel of SKH as described each the pin parts of formation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002199879 | 2002-07-09 | ||
| JP2002199879A JP2004041304A (en) | 2002-07-09 | 2002-07-09 | Needle bar driving mechanism for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1470700A true CN1470700A (en) | 2004-01-28 |
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ID=30437227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031489982A Pending CN1470700A (en) | 2002-07-09 | 2003-07-03 | Needle driving mechanism of sewing machine |
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| Country | Link |
|---|---|
| JP (1) | JP2004041304A (en) |
| CN (1) | CN1470700A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173430B (en) * | 2007-11-22 | 2011-05-18 | 杭州经纬电子机械制造股份有限公司 | Embroidery machine cap support frame |
| CN101634090B (en) * | 2008-10-21 | 2013-01-23 | 安乡凯斯机械零件有限公司 | Manufacture method of needle bar connecting rod on two-needle sewing machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006304846A (en) * | 2005-04-26 | 2006-11-09 | Juki Corp | Bearing mechanism, needle bar driving mechanism of sewing machine, and looper mechanism of sewing machine |
| CN116421292B (en) * | 2023-03-01 | 2023-10-17 | 常州健力邦德医疗器械有限公司 | Implantation traction mechanism of metal intramedullary pin |
-
2002
- 2002-07-09 JP JP2002199879A patent/JP2004041304A/en active Pending
-
2003
- 2003-07-03 CN CNA031489982A patent/CN1470700A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173430B (en) * | 2007-11-22 | 2011-05-18 | 杭州经纬电子机械制造股份有限公司 | Embroidery machine cap support frame |
| CN101634090B (en) * | 2008-10-21 | 2013-01-23 | 安乡凯斯机械零件有限公司 | Manufacture method of needle bar connecting rod on two-needle sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004041304A (en) | 2004-02-12 |
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