CN2672117Y - Sewing machine clutch belt wheel - Google Patents
Sewing machine clutch belt wheel Download PDFInfo
- Publication number
- CN2672117Y CN2672117Y CN 200420020036 CN200420020036U CN2672117Y CN 2672117 Y CN2672117 Y CN 2672117Y CN 200420020036 CN200420020036 CN 200420020036 CN 200420020036 U CN200420020036 U CN 200420020036U CN 2672117 Y CN2672117 Y CN 2672117Y
- Authority
- CN
- China
- Prior art keywords
- wheel
- friction wheel
- cam
- friction
- clutch
- 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.)
- Expired - Fee Related
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model discloses a sewing machine clutch belt wheel, comprising a belt wheel, a friction plate and a friction wheel in the inside of the nave of the belt wheel. A plane declutching device is arranged on one side of the friction wheel, whose still cam is fixed to a frame and whose upper end is connected with the lower end of a rocker by a spring; a motion cam of the plane declutching device is arranged inside the still cam, whose projection on the wheel rim is fixed to a groove of the motion lever, and the pulley wheel of the rocker is contacted with the slide block of the motion lever; the belt wheel, the friction plate, the friction wheel, the motion cam, the still cam are arranged on the main shaft with the same shaft, wherein the friction wheel and the main shaft are inter-matched in interference fitting way; an eccentric projection is arranged on the wheel face of the friction wheel, and the slide block can prop or separate the eccentric projection on the wheels. The utility model can make needles all along positioned on a proper position above a needle board. The sewing machine clutch belt wheel solves the trouble that an upper wheel needs to be dialed by hands when the sewing machine is power-off; the belt wheel only can be started before lifting needle bars and delivering work pieces. So the work efficiency of the sewing machine is enhanced.
Description
Technical field
The utility model relates to a kind of drive unit of the sewing machine, and it can make Sewing machines when shutting down, and syringe needle rests on a kind of clutch pulley of needle plate top correct position all the time.
Background technology
Existing sewing machine is to rotate by motor or foot pedal drive belt pulley, drives by belt then and goes up wheel and the rotation of whole head, makes the upper and lower motion of syringe needle.The head counter-rotating takes place and the fault of generation broken string, broken needle in this traditional drive unit of the sewing machine easily.Moreover; when Sewing machines is shut down; the position that syringe needle stops is random, when restarting, generally all needs to stir wheel with hand; syringe needle is mentioned earlier; after sending cloth, belt pulley is started rotate, so not only influence operating efficiency and sewing quality; and concerning the beginner, be difficult to grasp the sewing operation main points.
Summary of the invention
The purpose of this utility model is that at the defective of above-mentioned prior art and deficiency for the Sewing machines industry provides a kind of clutch pulley transmission device, it can make Sewing machines when stopping, and syringe needle rests on the correct position of needle plate top all the time.
The technological means that the utility model is taked is: this Sewing machines clutch pulley, in the belt pulley hub inboard wearing piece and friction wheel are housed, opposite side at friction wheel is equipped with the plane arrangement of clutch, the quiet cam of this plane arrangement of clutch is fixed on the vehicle frame, its upper end is connected with spring with the lower end of fork, the moving cam of plane arrangement of clutch is positioned at quiet cam inboard, projection on its wheel rim and moving lever groove plug and are fixing, the pulley that is fixed on the fork can contact with the slide block on the moving lever, belt pulley, wearing piece, friction wheel and moving cam, quiet cam is coaxial to be installed on the main shaft, wherein friction wheel and main shaft stationary fit; Two sides of described wearing piece and friction wheel are equipped with forward and backward pressing plate respectively, and this forward and backward pressing plate is actively socketed on the main shaft; The wheel face of described friction wheel is provided with eccentric projection, and the wheel face with friction wheel behind the top stem casing upper spring fixes; The described slide block that is contained on the moving lever end face can offset with the eccentric projection on the wheel face of friction wheel and close and separate.
The utility model is during with motor or foot pedal, and dynamic and static cam fastens, and forward and backward pressing plate wearing piece is compressed friction pulley, and belt pulley runs well, and shank is moved up and down.When motor stops to drive or step when stopping to trample, moving cam separates with quiet cam, and promotes push rod, makes the spring compression that is linked on the push rod, and friction wheel is separated with wearing piece, and the eccentric projection on slide block and the friction wheel is interlocked, and checks the friction wheel rotation.Head spindle shuts down, and shank rests on the correct position of needle plate top all the time.
The utility model can make Sewing machines when shutting down, and shank rests on the correct position of needle plate top all the time, solves when shutting down starting and need stir wheel with hand, and shank is mentioned by elder generation, send workpiece after, could start the trouble of belt pulley, improved work efficiency.
Description of drawings
Accompanying drawing is the utility model STRUCTURE DECOMPOSITION figure.
The specific embodiment
As shown in the figure, this Sewing machines clutch pulley comprises wearing piece 4 and the friction wheel 6 that is installed in belt pulley 1 wheel hub inboard, front pressuring plate 3 and rear fender 9 place wearing piece 4 and friction wheel 6 both sides, their all coaxial being installed on the main shaft, forward and backward pressing plate 3 and 9 movable sets on main shaft, friction wheel 6 and main shaft stationary fit.On friction wheel 6 wheel rims screw hole 5 is set, the correct position of shank when regulating parking in advance with holding screw.Behind the push rod 8 cover upper springs 7, the centre bore that passes screw on the friction wheel 6 and wearing piece is clipped in the middle pressing plate 4 with nut 3 and makes the three continuous.Screw hole and belt pulley 1 that screw 10 passes on rear fender 9, front pressuring plate 3 wheel faces are fixing, and make rear fender 9 and belt pulley 1 that certain clearance be arranged.The wheel face of friction wheel 6 is provided with eccentric projection.Opposite side at main shaft is equipped with the plane arrangement of clutch, the quiet cam 17 and the vehicle frame of this plane arrangement of clutch are fixed, its upper end is connected with the lower end elasticity of fork 15 by spring 16, the moving cam 11 of plane arrangement of clutch and quiet cam 17 coaxial being installed on the main shaft, the one side of moving cam 11 can offset with push rod 8 and close or separate, the wheel rim of moving cam 11 is provided with a projection, behind the groove tabling on the moving lever 12 lower end wheel rims of this projection and top, and is screwed.The wheel face of fork 15 is provided with elongated slot; its below is fixed with pulley 14; it contacts with slide block 13 on being arranged on moving lever 12; during shutdown; eccentric projection on slide block 13 and the friction wheel 6 offsets and closes; fork 15 is connected with pedal by pull bar (or chain), and the V-belt on the belt pulley 1 links to each other with motor output shaft.
When motor unlatching or the forward and backward swing of pedal, drive fork 15 by pull bar (or chain), pulley 14 on the fork 15 drives slide block 13, promoting moving lever 12 fastens moving cam 11 and quiet cam 17 mutually, spring 7 promotes push rod 8, rear fender 9, friction wheel 6, wearing piece 4, front pressuring plate 3 are pressed mutually, and the belt pulley running makes friction wheel 6 drive head and runs well.
When motor stops operating or pedal when stopping to trample, because the resiliency of the extension spring 16 on the quiet cam 17 drives fork 15 backward rotation, and by moving lever 12, moving cam 11 is separated with quiet cam 17, and promote push rod 8, make spring 7 compressions that are linked on the push rod, friction wheel 6 is separated with wearing piece 4, eccentric projection on slide block 13 and the friction wheel 6 is interlocked, checks friction wheel and rotate, make belt pulley idle running.Head spindle is out of service, and motor is work as usual, and shank just rests on the correct position of the needle plate top of adjusting in advance.
Claims (4)
1, a kind of Sewing machines clutch pulley, it is characterized in that being equipped with wearing piece (4) and friction wheel (6) in the belt pulley hub inboard, opposite side at friction wheel is equipped with the plane arrangement of clutch, the quiet cam (17) of this plane arrangement of clutch is fixed on the vehicle frame, its upper end is connected with spring (16) with the lower end of fork (15), the moving cam of plane arrangement of clutch (11) is positioned at quiet cam (17) inboard, projection on its wheel rim and moving lever (12) groove plug and are fixing, the pulley (14) that is fixed on the fork can contact with the slide block (13) on the moving lever, belt pulley (1), wearing piece (4), friction wheel (6) and moving cam (11), quiet cam (17) is coaxial to be installed on the main shaft, wherein friction wheel (6) and main shaft stationary fit.
2, Sewing machines clutch pulley according to claim 1 is characterized in that in two sides of described wearing piece (5) and friction wheel (6) forward and backward pressing plate (3) and (9) being housed respectively, and this forward and backward pressing plate is actively socketed on the main shaft.
3, Sewing machines clutch pulley according to claim 1 is characterized in that the wheel face of friction wheel (6) is provided with eccentric projection, and push rod (8) cover upper spring (7) back fixes with the wheel face of friction wheel.
4,, it is characterized in that being contained in slide block (13) on moving lever (12) end face and can offset with the eccentric projection on the wheel face of friction wheel (6) and close and separate according to claim 1 or 2 or 3 described Sewing machines clutch pulleys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020036 CN2672117Y (en) | 2004-02-10 | 2004-02-10 | Sewing machine clutch belt wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020036 CN2672117Y (en) | 2004-02-10 | 2004-02-10 | Sewing machine clutch belt wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672117Y true CN2672117Y (en) | 2005-01-19 |
Family
ID=34483251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420020036 Expired - Fee Related CN2672117Y (en) | 2004-02-10 | 2004-02-10 | Sewing machine clutch belt wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2672117Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996678A (en) * | 2012-08-24 | 2013-03-27 | 东阳市创亿针织机械有限公司 | Hosiery machine clutch control mechanism |
| CN104846562A (en) * | 2015-05-21 | 2015-08-19 | 际华三五一七橡胶制品有限公司 | Closure sewing and knotting machine |
| CN106854797A (en) * | 2015-12-08 | 2017-06-16 | 池州市旭豪机械有限公司 | A kind of sewing machine wire clamping prevention driving protection device |
-
2004
- 2004-02-10 CN CN 200420020036 patent/CN2672117Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996678A (en) * | 2012-08-24 | 2013-03-27 | 东阳市创亿针织机械有限公司 | Hosiery machine clutch control mechanism |
| CN102996678B (en) * | 2012-08-24 | 2015-02-04 | 东阳市创亿针织机械有限公司 | Hosiery machine clutch control mechanism |
| CN104846562A (en) * | 2015-05-21 | 2015-08-19 | 际华三五一七橡胶制品有限公司 | Closure sewing and knotting machine |
| CN106854797A (en) * | 2015-12-08 | 2017-06-16 | 池州市旭豪机械有限公司 | A kind of sewing machine wire clamping prevention driving protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |