CN1428473A - Lift device for sewing machine - Google Patents
Lift device for sewing machine Download PDFInfo
- Publication number
- CN1428473A CN1428473A CN02152452A CN02152452A CN1428473A CN 1428473 A CN1428473 A CN 1428473A CN 02152452 A CN02152452 A CN 02152452A CN 02152452 A CN02152452 A CN 02152452A CN 1428473 A CN1428473 A CN 1428473A
- Authority
- CN
- China
- Prior art keywords
- shell
- raising wire
- link component
- sewing machines
- presser feet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Sewing Machines And Sewing (AREA)
Abstract
The presser bar lifting device of the sewing machine is provide with a pressor foot pressed to a throat plate, a tip pulling roller which is arranged in the vicinity of the pressor foot and rotates intermittently, a housing which rotatably supports the tip pulling roller and is fitted with an elastic body for pressing the roller toward the throat plate, a presser bar lifting lever connected with a presser bar and the housing through a link member, and a presser bar lifting tool connected with the presser bar lifting lever. The presser bar and the housing are raised through the operation of the presser bar lifting tool and the holding metal plate and the tip pulling roller are separated from the throat plate. The connection between the housing and the presser bar lifting lever is formed through a hole and an almost J-shaped long hole in the link member using pins fitted in the presser bar lifting lever and the housing respectively.
Description
Technical field
The present invention relates to a kind of Sewing machines that before the nearby configuration of presser feet, draws roller, particularly relate to a kind of by lifting the uplifting device that operating parts makes presser feet and before draws the Sewing machines that roller leaves from needle plate.
Background technology
As the uplifting device that relates to this Sewing machines, as be disclosed in the Japanese kokai publication hei 8-38761 communique, near presser feet, draw roller before the configuration.Fig. 5 is the parts expanded view of wanting portion that relates to this existing apparatus, and Fig. 6 illustrates the elastomeric parts expanded view that the depression bar of this device is applied elastic force.Presser feet 1 is fixed in the depression bar 2 that vertically extends by screw 2a, and depression bar 2 can slide up and down to support to the sleeve 3 of screw engagement in sewing machine frame A.The upper end of depression bar 2 is matched with gland 4, and gland applies elastic force by arch spring 5 (the 1st elastomer) towards the below.The gland 4 that is applied elastic force by arch spring 5 applies elastic force by depression bar 2 towards 6 pairs of presser feets 1 of needle plate.
Before draw roller 7 to be supported on shell 9 pivotally by bolster 7a, the gear 7b of bolster 7a is connected to one-way clutch 8 by the gear 21b of transmitter shaft 21.One-way clutch 8 is connected to an end of both arms handle bar 11 as shown in Figure 4 by connecting elements 10, the other end of both arms handle bar 11 is connected to the bar 12 of the eccentric part that is installed on main shaft S.Shell 9 has the cramp bar 13 that extends towards vertical direction, and cramp bar 13 has a side's of supporting helical spring 14 catch 13a.Helical spring 14 is installed to cramp bar 13, and shell 9 applies elastic force by helical spring 14 (the 2nd elastomer) towards the needle plate side.
The depression bar 2 of presser feet 1 and the cramp bar 13 of shell 9 are connected respectively to raising wire 17 by the link component 15,16 that separates as shown in Figure 5.Raising wire 17 can be decomposed by the loose operations of screw 17a.In addition, raising wire 17 is connected to by connecting rod 18 and lifts operating parts 19.Lifting operating parts 19 is made of not shown pedal and solenoid start ground.
When making main shaft S revolution in order to drive Sewing machines, make transmitter shaft 21 revolutions off and on by one-way clutch 8, the intermittent-rotation of transmitter shaft 21 draws roller 7 before being delivered to by gear 7b, 21b.At this moment, the preceding roller 7 that draws is pushed to needle plate 6 with presser feet 1, and cloth is by preceding drawing roller 7 and carrying towards cloth feeding direction F from the feed dog (not shown) that the groove of needle plate 6 haunts.After the sewing finishing, form the idle loop of regulation, then follow-up cloth is inserted between presser feet 1 and the needle plate 6.
, when inserting follow-up cloth, make the presser feet pin and before draw roller to leave, so the idle loop of staying the sewing pusher side becomes not by the state that preceding draws roller wheel bearing from needle plate by the operation of lifting operating parts.At this moment, as follow-up cloth is set, then idle loop staggers, and does not form stitching in the beginning of cloth seam part, produces the piece of dumpling shape.Like this, existence is as the problem of the degraded appearance of sewings.In addition, as for the problem operator solving with hand operated cloth and idle loop, then be difficult to improve operating efficiency.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of outward appearance that when tailoring cloth continuously, can not make the stitching that is formed at these clothes to carry out the uplifting device of the Sewing machines of operation smoothly with worsening.
The uplifting device of Sewing machines of the present invention comprises presser feet, precedingly draws roller, shell, raising wire and lift operating parts; This presser feet has the depression bar that extends towards vertical direction, is pressed to needle plate by the 1st elastomer; Should before draw roller configuration near this presser feet, by the one-way clutch that is connected with main shaft driving rotational off and on; This shell draws roller before supporting this pivotally, sets up the 2nd elastomer towards needle plate with pushing; This raising wire is supported on the Sewing machines machine frame pivotally, is connected to depression bar and shell by the link component that separates (separately); This lifts operating parts and is connected to raising wire; Revolt two elastomers by the operation of lifting operating parts depression bar and shell are risen, make presser feet and before draw roller to leave from needle plate; It is characterized in that: being connected of shell and raising wire by the hole that is formed at above-mentioned link component with substantially for the slotted hole of J font and be individually fixed in raising wire and the pin of shell carries out, by making the relative raising wire of this link component change the position, changing be the sliding position of the pin in the slotted hole of J word shape substantially, make operate shell when lifting operating parts before draw roller not leave from needle plate.
And, be the pin that J word shape slotted hole is coupled to raising wire preferably with the basic of link component, in addition, the link component that is used to connect depression bar and raising wire can be configured to the inboard of Sewing machines machine frame, the link component that will be used to connect shell and raising wire is configured to the outside of Sewing machines machine frame.
According to the present invention, raising wire changes the position of the link component be used to connect shell and raising wire relatively.When stitching operation continuously, can change basic sliding position by the location change of this link component for the pin in the slotted hole of J word shape, when operating parts is lifted in operation, do not make shell before draw roller to leave from needle plate.On needle plate, keep idle loop when as a result, follow-up cloth being set.In making the way, wish when Sewing machines takes off cloth, change by the position of link component basic sliding position for the pin in the slotted hole of J word shape is changed, when operating parts is lifted in operation, make shell before draw roller to leave from needle plate to get final product with presser feet.In addition, basic for J word shape slotted hole is coupled to the occasion of the pin of raising wire with link component is the pars intermedia of J word shape slotted hole substantially because this pin is positioned at, so, change the position of the relative raising wire of link component easily.
Description of drawings
Fig. 1 is the perspective view of summary that the uplifting device of Sewing machines of the present invention is shown.
Fig. 2 is the key diagram that the active state of this device is shown.
Fig. 3 is the key diagram that the active state of this device is shown.
Fig. 4 is the perspective view that the summary of existing apparatus is shown.
Fig. 5 illustrates the parts expanded view of wanting portion that relates to existing apparatus.
Fig. 6 illustrates the elastomeric parts expanded view that the depression bar of this device is applied elastic force.
The specific embodiment
Below, according to Fig. 1 form of implementation of the present invention is described.With adopt same-sign in the identical part of Fig. 4-existing apparatus illustrated in fig. 6, omit its explanation.The part of presser feet 1 is coupled to the slot part of shell 9 as shown in Figure 1, presser feet 1 not towards about constitute pivotally.The top and the bottom of the cramp bar 13 of shell are by protuberance A1, the A2 supporting of Sewing machines machine frame A, and helical spring 14 is installed on the pars intermedia of cramp bar 13.One end in contact of helical spring 14 is in the upside protuberance A1 of Sewing machines machine frame A, and its other end touches the catch 13a that is fixed in cramp bar 13.Helical spring 14 applies elastic force towards the below to cramp bar 13, and the pushing force of helical spring 14 can be adjusted by pushing adjustment screw 14a.
The catch 13a that is fixed in the cramp bar 13 of shell 9 is connected to raising wire 17 by link component 22.The slotted hole 22a and the hole 22b of J word shape are set at link component 22.J word shape slotted hole 22a is coupled to the pin 23 that is formed at raising wire 17 slidably, and hole 22b is coupled to the pin 24 that is fixed in catch 13a.Like this, connect link component 22 and raising wire 17.When common, the cardinal principle pars intermedia ground that makes the pin 23 of raising wire 17 be positioned at J word shape slotted hole 22a constitutes.
The output shaft 20 of one-way clutch 8 has shaft coupling 20a, and this shaft coupling 20a is coupled to the shaft coupling 21a of transmitter shaft 21.The gear 21b that is fixed in transmitter shaft 21 lower ends be fixed in before draw the bolster 7a of roller 7 gear 7b engagement.The carriage 25 that is installed on shell 9 supports subsidy presser feet 26 pivotally, draws roller 7 to dispose along front and back before presser feet 1 and subsidy presser feet 26 are clamped.
Below, the effect of this device is described.As shown in Figure 2, be positioned at the J word shape slotted hole 22a left part of link component 22, along with the rotation of raising wire 17, catch 13a lifted when then operating parts 19 is lifted in operation by link component 22 as the pin 23 of raising wire 17.At this moment, link component 15 also lifts depression bar 2, so, presser feet 1 and before draw roller 7 to leave from needle plate 6, the result can remove the cloth on the needle plate 6.
In addition, as shown in Figure 3, make link component 22 move (change position), make the pin 23 of raising wire 17 be positioned at the right part of the J word shape slotted hole 22a of link component 22 relative to raising wire.At this moment, even make raising wire 17 rotations by the operation of lifting operating parts 19, the pin 23 of raising wire 17 also only is to slide in J word shape slotted hole 22a, does not lift catch 13a.Therefore,, thereby presser feet 1 is left from needle plate 6 though link component lifts depression bar 2, before draw roller 7 not leave from needle plate 6.When setting like this, when after making, follow-up cloth being inserted on the needle plate 6 of Sewing machines, stay idle loop in the sewing pusher side by preceding drawing roller 7 clampings.As a result, sewing work efficiency can not descend.
In this form of implementation, form the slotted hole of J word shape at the link component that connects shell and raising wire, but be not limited to such shape.What for example also can form " レ " word state etc. at link component is J word shape slotted hole substantially.In addition, in this form of implementation, pin is coupled to each hole of link component, but is not limited thereto, also can utilize the ladder screw.
As described above,, before when presser feet rises, not making, do not draw roller to leave, can not make the idle loop of staying the sewing pusher side that follow-up cloth is set with staggering, can improve the efficient when making continuously from needle plate according to the present invention.In addition,, this pin is positioned at is the pars intermedia of J word shape slotted hole substantially, can easily change the position of the relative raising wire of link component being the occasion that J word shape slotted hole is coupled to the pin of raising wire with the basic of link component.In addition, be configured to the outside of Sewing machines machine frame, can alleviate operational error by the link component that will connect shell and raising wire.
Claims (3)
1. the uplifting device of a Sewing machines comprises presser feet, precedingly draws roller, shell, raising wire and lift operating parts; This presser feet has the depression bar that extends towards vertical direction, is pressed to needle plate by the 1st elastomer; Should before draw roller configuration near this presser feet, by the one-way clutch that is connected with main shaft driving rotational off and on; This shell draws roller before supporting this pivotally, sets up the 2nd elastomer towards needle plate with pushing; This raising wire is supported on the Sewing machines machine frame pivotally, is connected to depression bar and shell by the link component that separates; This lifts operating parts and is connected to raising wire; Revolt two elastomers by the operation of lifting operating parts depression bar and shell are risen, make presser feet and before draw roller to leave from needle plate; It is characterized in that: by the hole that is formed at above-mentioned link component with substantially for the slotted hole of J font and be individually fixed in raising wire and the pin of shell is connected shell and raising wire, by making the relative raising wire of this link component change the position, and change be the sliding position of the pin in the slotted hole of J word shape substantially, make operate shell when lifting operating parts before draw roller not leave from needle plate.
2. the uplifting device of Sewing machines according to claim 1 is characterized in that: with the basic pin that is coupled to raising wire for J word shape slotted hole of link component.
3. the uplifting device of Sewing machines according to claim 1, it is characterized in that: the link component that will be used to connect depression bar and raising wire is configured to the inboard of Sewing machines machine frame, and the link component that will be used to connect shell and raising wire is configured to the outside of Sewing machines machine frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP399090/2001 | 2001-12-28 | ||
| JP2001399090A JP3764867B2 (en) | 2001-12-28 | 2001-12-28 | Sewing machine lifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1428473A true CN1428473A (en) | 2003-07-09 |
| CN100451206C CN100451206C (en) | 2009-01-14 |
Family
ID=19189425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021524521A Expired - Fee Related CN100451206C (en) | 2001-12-28 | 2002-11-28 | Lift device for sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3764867B2 (en) |
| CN (1) | CN100451206C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463710A (en) * | 2015-12-25 | 2016-04-06 | 杰克缝纫机股份有限公司 | Presser foot lifting mechanism of sewing machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237055B (en) * | 2017-08-09 | 2023-08-22 | 浙江中捷缝纫科技有限公司 | Presser foot structure of sewing machine |
| CN113249879B (en) * | 2021-06-18 | 2024-10-11 | 浙江杜马缝纫机股份有限公司 | Presser foot lifting and thread loosening mechanism and sewing machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5023464A (en) * | 1973-07-04 | 1975-03-13 | ||
| US5493979A (en) * | 1994-05-03 | 1996-02-27 | Union Special Corporation | Independent guide system for upper roller feeder |
| TW363095B (en) * | 1997-05-09 | 1999-07-01 | Barudan Co Ltd | Suppresser of sewing machine |
| JP4045519B2 (en) * | 1999-04-20 | 2008-02-13 | 株式会社ハシマ | Intermittent cloth feeder for sewing machine |
-
2001
- 2001-12-28 JP JP2001399090A patent/JP3764867B2/en not_active Expired - Fee Related
-
2002
- 2002-11-28 CN CNB021524521A patent/CN100451206C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463710A (en) * | 2015-12-25 | 2016-04-06 | 杰克缝纫机股份有限公司 | Presser foot lifting mechanism of sewing machine |
| CN105463710B (en) * | 2015-12-25 | 2018-11-23 | 杰克缝纫机股份有限公司 | A kind of mechanism for lifting pressre of sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3764867B2 (en) | 2006-04-12 |
| JP2003190684A (en) | 2003-07-08 |
| CN100451206C (en) | 2009-01-14 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20161128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |