CN1118392A - Driving apparatus in a sewing machine - Google Patents
Driving apparatus in a sewing machine Download PDFInfo
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- CN1118392A CN1118392A CN95105758A CN95105758A CN1118392A CN 1118392 A CN1118392 A CN 1118392A CN 95105758 A CN95105758 A CN 95105758A CN 95105758 A CN95105758 A CN 95105758A CN 1118392 A CN1118392 A CN 1118392A
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- motor
- tumbler
- clutch
- drive unit
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- 238000009958 sewing Methods 0.000 title claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims description 42
- 230000007246 mechanism Effects 0.000 claims description 37
- 230000001360 synchronised effect Effects 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 description 21
- 238000010168 coupling process Methods 0.000 description 21
- 238000005859 coupling reaction Methods 0.000 description 21
- 230000014509 gene expression Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 239000013256 coordination polymer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
- D05B69/12—Electrical or electromagnetic drives using rotary electric motors
- D05B69/125—Arrangement of clutch-brake construction
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
Abstract
A driving apparatus in a sewing machine. By operating a motor lever 62, a clutch disc 61 mounted on a motor shaft 58 is pressed to a fly wheel 55 mounted on a rotor 52 of a main motor or a rotation member 65, to which rotation from a sub-motor 75 freely rotatable centering on the motor shaft 58 is transmitted, to enable to transmit rotation of a motor pulley 59 mounted on the outer edge of the motor shaft 58 to the sewing machine main shaft via a belt. The driving equipment of a sewing machine constructed as above is provided with a sub-braking device 81 to enable to stop the machine directly braking the rotation member 65.
Description
The present invention relates to the drive unit of Sewing machines, particularly relate to the clutch motor that is used for shank is parked in the precalculated position.
Fig. 4 has shown the clutch motor as the Sewing machines drive unit.In this clutch motor, the rotor portion R of main motor, clutch-plate CD is identical with conventional clutch motor with the layout of motor shaft S and motor pulley P.
In this clutch motor CM, brake disc is rotary with respect to motor shaft S and motor frame, and a helical gear G is enclosed within on the outer peripheral face of brake disc B.Be used for low speed rotation face stand-by motor SM one end and connect with auxiliary electrical arbor SS, the other end is connected with electromagnetic brake MB.Auxiliary electrical arbor SS has a worm gear W, and it is meshed with aforesaid helical gear G.
In this clutch motor CM, a motor lever L similar to conventional clutch motor is urged downwardly clutch-plate CP is pressed against on the flywheel, thereby motor shaft S and electrical machine belt pulley P are rotated at a high speed.
When motor bar thick stick L by on when pushing away, clutch-plate CP is pressed against on the brake disc B that has worm gear G.At this moment, electromagnetic brake MB is released by low speed signal or the pin precalculated position signal that an outside provides, thereby stand-by motor SM is rotated, when stand-by motor rotates like this, brake disc B is rotated by the engagement limit of worm gear W and helical gear G, like this, clutch-plate CP, motor shaft S and electrical machine belt pulley P are with low speed rotation.
Then, end low speed signal or a pin signal is provided, to end the signal that stand-by motor uses, operation electromagnetic brake MB is to stop the low speed rotation of electrical machine belt pulley P.
The utility model publication No.sho of Japanese unexamined, disclosed among the 53-1746B a kind of be used for Sewing machines stop the device of shank in the precalculated position, (below be called " a kind of shank precalculated position arresting stop "), this Sewing machines has used conventional clutch motor.This device as shown in Figure 5.
Among Fig. 5, the arm of label 1 expression Sewing machines; The conventional clutch motor of 19 expressions; 14 expressions are used for the stand-by motor of low speed rotation, and this low speed rotation is to be used for making shank to be positioned at the precalculated position; 7 expressions have the coupling arrangement of one-directional rotation clutch; Transmission mechanism of 22 expressions, it moves the motor lever 20 of clutch motor 19 and places clutch-plate neither to contact with the rotor sidepiece also not and the contacted position of brake sidepiece; Switching device of 26 expressions is used to export that a top dead-centre stops index signal and a bottom dead centre stops index signal.Fig. 6 has shown the details of transmission mechanism 22, and Fig. 7 has shown the details of switching device 22.
Stand-by motor 14 is connected with the arm axle 2 of sewing machine arm 1 by a coupling arrangement 7.One-directional rotation clutch designs in the coupling arrangement 7 be can be freely rotating with the direction of Sewing machines switched in opposite, the rotation of clutch motor 19 is by flywheel and belt 37 transmissions that are contained in arm axle 2 one ends.Motor lever 20 links to each other with 29 with coupling bar 25 respectively with pedal 36, and two coupling bars are coupled to each other together by switching device 26.This switching device 26 has a upper dead center position shutdown switch 27 and a lower dead point position shutdown switch 28, and both manipulations are as follows: be fastened on lever 32 on the coupling bar 29 move up and down master cock 27 and 28.
Under the such structure situation of shank precalculated position arresting stop, when pedal 36 (Fig. 5 shows) is stepped on forward, then coupling bar 29 is pulled down, coupling bar 29 and lever 32 move downward like this, simultaneously stage clip 34 is compressed, this be because the elastic force of stage clip 34 (Fig. 7) less than the elastic force of the returning spring that is used for motor lever 20.The result is close on the support that is against switching device 26 because of the throw-out collar 30 that is contained on the coupling bar 29.
When pedal 36 is further stepped on forward, coupling bar 39, switching device 26 and be installed in coupling bar 25 on 26 the support and do as a wholely to move down together.The result is, is packed in throw-out collar 24 on the coupling bar 25 against the pushed down motor lever 20 that returns extensive spring of motor lever 20, and as shown in Figure 6, final, in clutch motor 19, clutch-plate is pushed against on the rotor, thereby Sewing machines is run up.In this manipulation, the rotation of clutch motor 17 is transmitted by belt 37 and the flywheel 4 that is contained on the arm axle 2, but the unidirectional rotary clutch in the then coupled device 7 of the transmission of the rotation of stand-by motor 14 blocks.
When pedal 38 rotated back into the home position, above-mentioned a series of manipulations were to carry out to anti-order.Finally, the lever 32 that is packed on the coupling bar 29 returns extensive effect and switch 28 disengagements by the elastic force that compresses spring 34, so switch 28 cuts out.That follows this switch 289 opens → closes signal, and the halt instruction of shank lower dead point position is applied in control cabinet 35, the result, and first transmission mechanism 22 (Fig. 6 shows) is operated.
Then, stand-by motor 14 is driven, thereby arm axle 2 is driven by the unidirectional rotary clutch in the coupling arrangement 7.In arm axle 2 rotary courses, when the lower dead point position signal received from flywheel 4 or coupling arrangement 7, stand-by motor 14 is stopped, and transmission device 22 is closed simultaneously.As a result, motor lever 22 is restored by the elastic force that recovers spring, and therefore, in clutch motor 19, clutch-plate is pressed against on the brake disc, and Sewing machines is stopped.
When pedal 36 is stepped on backward, coupling bar 29 and the lever 32 that installs thereon move up against the elastic force of stage clip 33, this be because coupling bar 25 move up and the moving up of support of switching device 26 fixed thereon all is subjected to the restriction of coupling bar 25 and motor frame.Thereby switch 27 is connected, and is packed in throw-out collar 31 on the trip(ping) lever 29 and is close to switch bracket and promotes it and move down, thereby the hypsokinesis of pedal 36 is stopped.
After switch 27 is connected with said method, the halt instruction of shank upper dead center position is applied in control cabinet 35,1 is the same with above-mentioned lower dead point position shut-down operation as a result, transmission mechanism 22 and stand-by motor 14 are handled, and receive a upper dead center position signal from flywheel 4 or coupling arrangement 7, like this, similar with the lower dead point position shut-down operation, Sewing machines just is stopped.
Yet there are the following problems for traditional clutch motor CM shown in Figure 4:
(1) when unexpected braking, because will producing one, the rotation of clutch-plate CP is used to power, it will act between helical gear G and the worm gear W, thereby be easy to produce a kind of impulsive force.
(2) brake operating comes into force by the engagement of helical gear G and worm gear W, therefore, motor pulley will along with helical gear G and worm gear W between the identical direction of backlash vibrate.
(3) when electromagnetic brake MB generation event hinders, that is: when motor can not be braked, motor pulley then can not be stopped, if in order to change and to repair, needed electromagnetic brake MB is pulled down from motor, and it is impossible then using conventional clutch motor.
There is a following difficult problem in traditional shank precalculated position arresting stop shown in Fig. 5 to 7:
(1) in the top dead-centre shut-down operation or in the bottom dead centre shut-down operation, stand-by motor 14 must just be operated after motor lever 20 is in the precalculated position, thereby clutch-plate can not contacted with rotor-end and dog point.That is, this operation is that substep is finished.Therefore this used time of a series of operations that shank is parked in the precalculated position will be extended.
(2) the clutch motor has two positions, and one at round end, and another is stopping end, for clutch-plate, it is similar to traditional clutch motor, but also has a neutral position in addition, wherein, clutch-plate neither be positioned at round end be not positioned at yet stop the end.Therefore, this clutch motor must have the space at an a little relatively greatly clutch-plate place, and does not allow to reduce significantly the stroke that pedal is stepped on downwards.If stroke reduces significantly, then moving of motor lever 2 must accurately significantly be increased.
(3) when clutch-plate or brake disc wear or they when being replaced because of wearing and tearing, motor lever 20 all will have change in location, like this, will regulate the relative position of transmission mechanism 22 and motor lever 20.
(4) if the elastic force of the recovery spring of motor lever 20 is too big, then the operation of transmission mechanism will be very unsafty, at this moment, importantly, clutch-plate can not break away from fully with brake disc, thereby stand-by motor 14 is owing to the loading of brake disc is rotated, and the result causes the unidirectional rotary clutch in stand-by motor 14 or the coupling arrangement 7 to be damaged.
From as seen above-mentioned, the object of the present invention is to provide a kind of drive unit of Sewing machines, it will overcome above-mentioned defective, that is, when unexpected braking, the impulsive force that is produced by being used to power of clutch-plate rotation is passed to the rotation transmitting portions that is used to transmit the stand-by motor rotation, and, under the situation that stand-by motor does not rotate, the vibration of rotation transmitting portions is sent on the motor pulley, causes that it vibrates on direction of rotation.
In order to realize this purpose, first aspect of the present invention has provided a kind of transmission device of Sewing machines, comprises a main motor that has rotor; A flywheel that becomes one with main rotor; A motor shaft; One with this clutch-plate of motor shaft all-in-one-piece clutch-plate facing to flywheel; A motor pulley that is loaded on the motor shaft outer end; Tumbler on motor shaft that is rotatably mounted between motor pulley and the clutch-plate; A stand-by motor; A rotary transfer apparatus is used for the rotation of stand-by motor is delivered to tumbler, a motor lever that is used for the mobile motor axle, and the manipulation motor lever can be pressed against clutch-plate one of flywheel and tumbler selectively and upward rotation is delivered on the electrical machine belt pulley; And, a complemental brake system, it will directly be braked selectively to make to rotate to tumbler and stop.
Second aspect of the present invention is to provide a kind of drive unit according to first aspect, and wherein complemental brake system has a spring, is used to keep the tumbler that is braked.
The 3rd aspect of the present invention is to provide a kind of drive unit according to first aspect, and wherein rotary transfer apparatus has a gear mechanism that is positioned between stand-by motor and tumbler.
The 4th aspect of the present invention is to provide a kind of drive unit according to first aspect, and wherein rotary transfer apparatus includes: an equipment gear that is connected with stand-by motor; With a synchronous belt of being located on equipment gear and the revolving part.
In Sewing machines drive unit of the present invention, tumbler is directly stopped by complemental brake system, and this tumbler can rotate around motor shaft, and its rotation is passed to by stand-by motor.Therefore, when the clutch motor was braked suddenly, the rotary transfer apparatus that the impulsive force of being used to the power generation of being rotated by clutch-plate can not be passed between stand-by motor and tumbler got on.In addition, when stand-by motor is not handled, may cause that the vibration of the rotating transmission device that motor pulley vibrates can not transmitted on rotation direction.
Among the present invention, employing does not make the motor bar be positioned at neutral position and makes the rotating method of motor shaft, therefore, motor shaft with clutch-plate can stably rotate, be not subjected to the influence of motor lever amount of movement and motor lever back stretch, wherein, clutch-plate be pushed against tumbler or with main rotor all-in-one-piece flywheel on.
In drive unit, complemental brake system has a spring that is suitable for keeping the tumbler braking.Therefore, even when transmission mechanism generation event hinders, braking action is still being kept by the elastic force of auxiliary braking spring.
In addition, in drive unit, the rotary transfer apparatus that is used for rotatablely moving of stand-by motor passed to tumbler is a gear mechanism.Therefore, when the clutch motor is stopped suddenly, can not be passed to the mesh regional of gear mechanism owing to being used to of producing of the rotation of clutch-plate impulsive force that power causes.In addition, when stand-by motor was not handled, the sort of vibration that may cause the vibration of motor pulley on direction of rotation of meshing zone of gears can not transmitted yet.
In addition, in drive unit, being used for the rotary transfer apparatus that rotation with stand-by motor passes to tumbler is a synchronous belt device, therefore, when the clutch motor is braked suddenly, can not be passed to the region of engagement of timing belt pulley and synchronous belt by the impulsive force of being used to the power generation of clutch-plate rotation.In addition, when stand-by motor was handled, the stagnation of synchronous belt can not be transferred to motor pulley, had avoided the vibration of electrical machine belt pulley on direction of rotation like this.
Fig. 1 is the longitudinal section as the example of a clutch motor of drive unit in the Sewing machines, and it is the first embodiment of the present invention;
Fig. 2 is the longitudinal section of the clutch motor of second embodiment of the invention;
Fig. 3 is the longitudinal section of the clutch motor of third embodiment of the invention;
Fig. 4 is the longitudinal section of the clutch motor of drive unit traditional in the Sewing machines;
Fig. 5 is a front view, is the profile diagram of transmission shank precalculated position arresting stop example in the Sewing machines;
Fig. 6 is the thin portion zoomed-in view of transmission mechanism in the arresting stop shown in Figure 5;
Fig. 7 is the thin portion zoomed-in view of the switching device 3 in the arresting stop shown in Figure 5;
Now describe referring to Fig. 1 to 3 pair of preferential enforcement of the present invention.
Fig. 1 has shown in the Sewing machines of the present invention first embodiment as the clutch motor of drive unit.Label 50 expression clutch motors among Fig. 1,51 expression motor frames; The main rotor of 52 expressions; 55 is flywheel; 56 is sliding sleeve; 58 is motor shaft; 59 is motor pulley; 61 is clutch-plate; 62 is motor lever; 64 is the motor lever returning spring; 65 is tumbler; 66 is helical gear; 67 is brake disc; 71 is worm gear; 72 is the auxiliary electrical arbor; 74 is rotary transfer apparatus; 75 is stand-by motor; 81 is complemental brake system; 82 is the auxiliary braking liner; 84 is the auxiliary braking spring; 87 is a transmission mechanism.
As shown in Figure 1, in clutch motor 50, main rotor 52 and axle 53 are arranged in motor frame 51, and this axle 53 is being supported rotationally by two bearings 54.The right-hand member of armature spindle 53 (showing as Fig. 1) is combined with flywheel 55.Sliding sleeve 56 is loaded on the right end position of motor frame 51 slidably, and (as shown in Figure 1), in the sliding sleeve 56 that is provided with like this, motor shaft 58 is supported rotationally by two bearings 57, and its axis of support is coaxial with armature spindle 53.
Above-mentioned sliding sleeve 56 is connected with motor lever 62, lever 62 is articulated on the frame 51 by pin 63, in order to push sliding sleeve 56 to right side that Fig. 1 shows, the returning spring 64 of motor lever, promptly an end of a tension force ring spring is connected on the motor lever 62 between pin 63 and the sliding sleeve 56.The other end of this spring then is connected on the right side part of motor frame 51.
Tumbler 65 is installed in rotation on the motor shaft 58 between sliding sleeve 56 and the clutch-plate 61.Tumbler 65 comprises the helical gear 66 that is positioned at the left side and the brake disc 67 in left side, and promptly tumbler 65, and helical gear 66 and brake disc are integral device, the right side of tumbler 65 by the rotatable twelve Earthly Branches of bearing 68 on motor frame 51.
In order to brake brake disc 67, provide a complemental brake system 81, it comprises an aforesaid auxiliary braking lining 82, is used for the outer circumference surface of brake disc 67 is exerted pressure; A bar 83 that links to each other with auxiliary braking lining 82; An aforesaid auxiliary braking spring 84, it is between auxiliary braking lining 82 and motor frame 51.This auxiliary braking spring 84 is a helical spring specifically, and it is pushed against auxiliary lining 82 on the outer circumference surface of brake disc 67 on bar 83.
The left end of connecting rod 85 (Fig. 1 shows) is connected with the position, outer end of the bar 83 that stretches out motor frame 51 outer ends, and the middle part of connecting rod 85 is embedded on the motor frame by pin 86, and connecting rod 85 just can be around pin 86 swings like this.The right-hand member of connecting rod 85 (Fig. 1 shows) is connected with the control stick 88 of transmission mechanism 87, and this transmission mechanism 87 is fixedly mounted on the outer surface of motor frame 51.Transmission mechanism 87 can be a solenoid, a cylinder or a hydraulic cylinder, or other drive source.
Clutch motor 50 is following operations:
Suppose main rotor 52 rotation and stand-by motor 75 stops at a high speed.Like this, the transmission mechanism 87 of complemental brake system 81 does not operate, thereby auxiliary braking lining 82 utilizes the compression stress of auxiliary braking spring 84 to be pressed against on the external peripheral surface of brake disc 67, that is, the revolving part 65 with helical gear 66 directly keeps halted states by complemental brake system 81.
In this case, motor lever 62 is swung around pin 63, and is moved to the left sliding sleeve 56 (Fig. 1 shows) against the elastic force of motor lever spring 64.In this operating process, motor shaft 58 is moved with sliding sleeve 56, thereby, being pushed against on the flywheel 55 with motor shaft 58 all-in-one-piece clutch-plates 61, this flywheel is and main rotor 52 all-in-one-pieces.Thereby main rotor 51 directly is coupled with motor shaft 58, thereby makes and motor shaft 58 all-in-one-piece electrical machine belt pulleys 59 rotate at a high speed.
When require Sewing machines to slowly run so that when last or lower dead point position stop shank, motor lever 62 is to swing in the other direction, thereby the elastic force that clutch-plate 61 returns extensive spring 64 by means of motor lever is pressed against on the side surface of helical gear 66 of tumbler 65.In this case, as outside low speed signal or the shank precalculated position signal that is provided is provided, complemental brake system 81 is released, and stand-by motor 75 is rotated.
That is to say that transmission mechanism 87 is handled to return control stick 88.Thereby connecting rod 85 is around pin 86 swings, and the bar 83 that moves up, and therefore auxiliary lining 82 disengages against the pressure elastic force of auxiliary braking spring 84 and the external peripheral surface of brake disc 67, makes revolving part 65 freely rotate.Then, stand-by motor 75 is activated, and its rotation is stretched 65 by rotation and transmitted, and promptly quotes helical gear 66 and is installed in that the engagement of the worm gear 71 on the auxiliary electrical arbor 72 transmits.Like this, tumbler 65 is just to slowly run.
In this case, clutch-plate 61 is compressed against on the side surface of helical gear 66 of tumbler 65 as described above.Thereby revolving part 65 and clutch-plate 61 are coupled, and as their directly coupling each other, thereby the motor pulley 59 that is installed on the motor shaft 58 are slowly run.
After this, along with low speed signal or letter pin signal termination, stand-by motor 75 is stopped, and simultaneously, complemental brake system 81 directly braking tumbler 65 makes it to stop.Thereby the motor pulley 59 of low speed rotation is stopped.
The second embodiment of the present invention will be described by Fig. 1.The difference of second embodiment and above-mentioned first embodiment only is the arrangement of stand-by motor 95 and its rotary transfer apparatus 94, therefore, among Fig. 2 with Fig. 1 in the shelves number or the symbol of parts of corresponding function be consistent, and second embodiment mainly is described its zone.
As shown in Figure 2, in a second embodiment, the left side of revolving part 65 has a toothed belt wheel, also is timing belt pulley 69 (substituting helical gear 66).Synchronous belt 91 also is positioned at (this band is the flute profile belt) on the timing belt pulley 69.Synchronous belt 91 also is positioned on the gear 921.
Gear 92 is installed on the output shaft 93 of stand-by motor 95.Stand-by motor 95 utilizes electric cover shell 96 to be installed on the outer surface of motor frame 51.For the rotation with stand-by motor 95 passes to rotatable parts 65, the gear 91 of stand-by motor 95, be with synchronously 91 and timing belt pulley constituted a rotary transfer apparatus 94.
By means of rotation transmission device 94, the rotation of stand-by motor can be delivered to tumbler 65, specifically, when stand-by motor is driven, can pass to tumbler 65 by synchronous belt 91 and timing belt pulley 69 from the low speed rotation that is loaded on auxiliary electrical arbor 93.Other manipulations of second embodiment are identical with first embodiment.
The effect of above-mentioned first and second embodiment of the present invention is as follows:
(1) about problem (1) and (2) of traditional clutch motor shown in Figure 4: helical gear 66 or synchronous pulley 69 are directly by complemental brake system 81 brakings.Thereby when the clutch motor was braked suddenly, the impulsive force of being used to the power generation of being rotated by clutch-plate can not affact the mesh regional of helical gear 66 and worm gear, or can not affact the region of engagement of synchronous pulley 69 and synchronous pulley 91.And when the stand-by motor inoperation, the backlash of helical gear and worm gear 71 or the stagnation of synchronous belt 91 will can not cause the vibration of motor pulley 59 in direction of rotation.
(2) about the problem (1) to (4) of the traditional shank precalculated position arresting stop shown in Fig. 4-7: do not adopt among the present invention motor lever 62 is arranged on neutral position makes motor shaft 58 method free to rotate.Therefore, motor shaft 58 can stably rotate, and is not subjected to the influence of the recovery elastic force of the amount of movement of motor lever 62 and clutch-plate 51 amount of movements and motor lever 62.
(3) about the problem (3) of traditional clutch motor shown in Figure 4: even take place so when hindering, braking action is still being kept by auxiliary braking spring 84 when transmission mechanism 87.Therefore, even when electric transmission 87 need to change or maintenance and when dismantling, clutch motor 50 still keeps its use constant.
Referring now to Fig. 3 the third embodiment of the present invention is described.The difference of the 3rd embodiment and first embodiment only is on the layout of complemental brake system 81.Thereby, in Fig. 3 with Fig. 1 in the label or the symbol of parts of corresponding function be identical.And the 3rd embodiment only describes its main difference part.
In the 3rd embodiment, the complemental brake system 81 that is used to brake brake disc 6 is designs like this: as shown in Figure 3, the braking lining 82 that is used to compress brake disc 66 external peripheral surfaces is installed in an end of bar 83, and the left part of bell-crank lever 185 (Fig. 3) is connected with the outer end portion that bar 83 stretches out motor frame 51.Auxiliary braking spring 184, i.e. compression ring spring is by around from the outer end of the overhanging bar 83 of motor frame 51.Specifically, auxiliary braking spring 184 is placed between the left part (Fig. 2 shows) of the outer surface of motor frame 51 and bell-crank lever 185, so that force auxiliary braking lining 82 to break away from the external peripheral surface of brake discs 67.
The middle part of bell-crank lever 185 is contained on the pin 186, and pin is embedded on the motor frame 51, and this mounting means can make bell-crank lever 185 around pin 186 swings.As shown in Figure 3, the upper end of bell-crank lever 185 is connected with the action bars 188 of transmission mechanism 187.And transmission device 187 is installed on the outer surface of motor frame 51 by a support 189.Similar to first embodiment, swing mechanism 187 can be a solenoid, a cylinder, and a hydraulic cylinder maybe can be other drive source.
In the complemental brake system 81 of the 3rd embodiment, the action bars 188 of transmission mechanism 187 mobile is action bars 88 mobile opposite of the transmission mechanism 87 of first embodiment.That is, when the transmission mechanism 187 of complemental brake system 81 was operated, action bars 188 returned left.The result is, bell-crank lever 185 is around pin 186 swings, and carriage release lever 83 moves downward against the elastic force of auxiliary braking spring 184, thereby auxiliary braking lining 82 is pressed against on the external peripheral surface of brake disc 67.Like this, tumbler 65 is directly braked and is stopped.
When complemental brake system 81 was released, transmission mechanism 87 also was released, thereby action bars 188 is moved to right.As a result, bell-crank lever 182 rotates and bar 83 is upwards moved around pin 186, thereby auxiliary braking lining 82 is separated from the external peripheral surface of brake disc 67 by means of the elastic force of auxiliary braking spring 184.As a result, tumbler 65 just can freely rotate.Other operation is identical with first embodiment.
The layout of the complemental brake system 81 among the 3rd embodiment can be used for second embodiment.
The effect of clutch motor 50 of complemental brake system 81 with the 3rd embodiment is identical with (2) with the effect (1) of aforesaid the one the second embodiment.
When being that the clutch motor is described when of the present invention by means of the Sewing machines drive unit, it should be noted that simultaneously the present invention is not limited to this, that is, technical conceive of the present invention can be applied to other drive unit, as if other clutch and motor etc.In addition, technical conceive of the present invention can be used for the Sewing machines of all kinds, and clearly, the structure that other are concrete is as if the rotating transmission device that is provided between auxiliary motor and the tumbler can change under the situation that does not deviate from principle of the present invention or revise.
As mentioned above, in the drive unit of Sewing machines of the present invention, complemental brake system is directly braked tumbler and is stopped, and this driving member can rotate around motor shaft, and its rotation is that stand-by motor passes over.Therefore, when the clutch motor stops suddenly, be used to power and rotating transmission device that the impulsive force that causes can not be delivered between stand-by motor and tumbler gets on by the rotation of clutch-plate.In addition, this feature has also been eliminated a difficult problem,, when the stand-by motor inoperation, may cause that the vibration of the rotating transmission device of the vibration of motor pulley on rotation direction can not transmitted that is.
Among the present invention, do not adopt the sort of by motor lever being adjusted to the mode that neutral position makes the motor shaft rotation, therefore, have and to push against on the tumbler or can stable rotation, be not subjected to motor lever amount of movement and motor lever to return the influence of extensive elastic force with the motor shaft of clutch-plate on the main rotor all-in-one-piece flywheel.
In addition, in drive unit of the present invention, complemental brake system has a spring that is used to keep the tumbler braking, thereby even when transmission mechanism breaks down, braking action still can kept by the elastic force of auxiliary braking spring.Therefore, even when transmission device need be changed or repair and be removed, the function that the clutch motor remains unchanged.
Further say, being used for the rotating transmission device that rotation with stand-by motor passes to tumbler is gear mechanism, therefore, when the clutch motor is braked suddenly, can not be delivered to by being used to of rotating of clutch-plate impulsive force that power produces in the gears engaged zone of gear mechanism and go.When the stand-by motor inoperation, the backlash in gears engaged zone can not passed to motor pulley, thereby has avoided the vibration of motor pulley in direction of rotation.
Say further again, being used for the transfer device that rotation with stand-by motor passes to tumbler is the synchronous belt device, therefore, when the clutch motor stops suddenly, can not be delivered to timing belt pulley and the mesh regional between the band synchronously by being used to of rotating of clutch-plate impulsive force that power produces.When the stand-by motor inoperation, the vibration of the engagement between timing belt pulley and the synchronous belt or the stagnation of synchronous belt can not be delivered on the motor pulley, otherwise above-mentioned vibration or stagnation may be drawn the vibration of electrical machine belt pulley in direction of rotation.
Claims (13)
1. the drive unit of a Sewing machines comprises: the main motor of a band rotor; One and described main rotor all-in-one-piece flywheel; A motor shaft that separates with main rotor; One and said motor shaft all-in-one-piece clutch-plate, its clutch-plate is relative with flywheel; A motor pulley that is loaded on motor shaft one end; A tumbler that is rotatably installed on the said motor shaft, it is placed between motor pulley and the said clutch-plate; A stand-by motor; Rotation with stand-by motor passes to the transfer device of tumbler; A motor lever that is used for the mobile motor main shaft by the operating electrical machines lever, can be close proximity to flywheel or tumbler respectively with clutch-plate selectively, thereby the rotation of flywheel or the rotation of tumbler are passed to motor pulley; Can also comprise a directly braking tumbler and with its complemental brake system that stops.
2. according to the drive unit of claim 1, it is characterized in that said transfer device comprises: the synchronous belt that equipment gear that is connected with stand-by motor and extend out from equipment gear and tumbler.
3. according to the drive unit of claim 1, it is characterized in that said transmission device comprises: the gear mechanism between stand-by motor and driving member.
4. according to the drive unit of claim 3, it is characterized in that said gear mechanism comprises: a helical gear and a worm gear that is installed on the stand-by motor that is positioned on the tumbler, its worm gear is meshed with helical gear.
5. according to the drive unit of claim 1, it is characterized in that said complemental brake system has a spring that tumbler is kept its on-position.
6. according to the drive unit of claim 5, it is characterized in that said transfer device comprises: the synchronous belt that equipment gear that is connected with said stand-by motor and extend out from equipment gear and tumbler.
7. according to the drive unit of claim 5, it is characterized in that said transfer device has a gear and a mechanism between stand-by motor and tumbler.
8. according to the drive unit of claim 7, it is characterized in that said gear mechanism comprises: a helical gear that is positioned on the tumbler; With a worm gear that is positioned on the stand-by motor, said worm gear is meshed with helical gear.
9. according to the drive unit of claim 5, it is characterized in that said complemental brake system further comprises: an auxiliary braking lining that is used to be pressed against the external peripheral surface of said tumbler; A controls that links to each other with said auxiliary lining, the optionally mobile auxiliary braking lining of this controls are pressed against on the external peripheral surface of said tumbler or from the tumbler external peripheral surface and are released; And transmission mechanism that moves this controls.
10. according to the drive unit of claim 1, it is characterized in that said complemental brake system comprises: an auxiliary braking lining that is used to be pressed against the external peripheral surface of said tumbler; A controls that links to each other with said auxiliary braking lining, the optionally mobile auxiliary braking lining of this controls are pressed against on the external peripheral surface of said tumbler or are released from the external peripheral surface of tumbler; And transmission mechanism that moves this controls.
11., it is characterized in that said transmission mechanism includes a solenoid or cylinder or hydraulic cylinder according to the drive unit of claim 10.
12. according to the drive unit of claim 10, it is characterized in that said auxiliary lining can with the vertical direction of motor shaft axis on slide.
13. the drive unit according to claim 1 is characterized in that, said motor shaft can slide between first, second position, and its primary importance is clutch-plate and the contacted position of flywheel, and the second place is clutch body sheet and the contacted position of tumbler.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6089971A JPH07289767A (en) | 1994-04-27 | 1994-04-27 | Sewing machine driving device |
| JP89971/94 | 1994-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1118392A true CN1118392A (en) | 1996-03-13 |
Family
ID=13985575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95105758A Pending CN1118392A (en) | 1994-04-27 | 1995-04-27 | Driving apparatus in a sewing machine |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPH07289767A (en) |
| KR (1) | KR950032805A (en) |
| CN (1) | CN1118392A (en) |
| BR (1) | BR9501777A (en) |
| DE (1) | DE19515571A1 (en) |
| GB (1) | GB2288821A (en) |
| IT (1) | IT1279141B1 (en) |
| TW (1) | TW284803B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396029A (en) * | 2020-03-19 | 2020-07-10 | 中国地质大学（北京） | Pushing device in conveying device for lowering and recovering vertical well logging instrument |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978822B (en) * | 2012-08-24 | 2014-06-04 | 东阳市创亿针织机械有限公司 | Control mechanism of hosiery machine clutch |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB750603A (en) * | 1951-03-30 | 1956-06-20 | Rothenborg Specialmaskiner For | Improvements in and relating to driving means particularly for sewing machines |
| CA941044A (en) * | 1968-06-04 | 1974-01-29 | Matsushita Electric Industrial Co., Ltd. | Device for stopping a rotating member at a predetermined angular position |
| JPH07194883A (en) * | 1993-12-28 | 1995-08-01 | Juki Corp | Driving device of sewing machine |
-
1994
- 1994-04-27 JP JP6089971A patent/JPH07289767A/en active Pending
- 1994-10-04 TW TW083109184A patent/TW284803B/zh active
-
1995
- 1995-04-25 KR KR1019950009760A patent/KR950032805A/en not_active Application Discontinuation
- 1995-04-25 BR BR9501777A patent/BR9501777A/en not_active Application Discontinuation
- 1995-04-26 IT IT95TO000327A patent/IT1279141B1/en active IP Right Grant
- 1995-04-27 CN CN95105758A patent/CN1118392A/en active Pending
- 1995-04-27 DE DE19515571A patent/DE19515571A1/en not_active Withdrawn
- 1995-04-27 GB GB9508586A patent/GB2288821A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396029A (en) * | 2020-03-19 | 2020-07-10 | 中国地质大学（北京） | Pushing device in conveying device for lowering and recovering vertical well logging instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO950327A0 (en) | 1995-04-26 |
| TW284803B (en) | 1996-09-01 |
| JPH07289767A (en) | 1995-11-07 |
| GB9508586D0 (en) | 1995-06-14 |
| GB2288821A (en) | 1995-11-01 |
| KR950032805A (en) | 1995-12-22 |
| BR9501777A (en) | 1995-12-05 |
| DE19515571A1 (en) | 1995-11-23 |
| ITTO950327A1 (en) | 1996-10-26 |
| IT1279141B1 (en) | 1997-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |