CN200992638Y

CN200992638Y - Sewing machine reverse-sewing switching control device

Info

Publication number: CN200992638Y
Application number: CN 200620166544
Authority: CN
Inventors: 陈瑞文
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-07
Filing date: 2006-12-07
Publication date: 2007-12-19
Anticipated expiration: 2016-12-07

Abstract

A backstitch switching control device for the sowing machine, which is mainly characterized in that a stirring control part is arrange on the sowing machine body, a primary electronic switch is arranged for the stirring control part and has the press touch relation with the stirring control part. The primary electronic switch is connected with a secondary electronic switch and an actuating mechanism, which is arranged on the base of the sowing machine and driven by the primary electronic switch, a press part, and a moving pivot that is arranged on the sowing machine body and corresponding to a switching device. One end face of the switching control device is connected with one end of the actuating mechanism. The stirring motion of the control part stirs up the primary electronic switch and the secondary electronic switch is started, then the transmission unit generates the horizontal stroke motion, which results in that the press part drives the switching unit to generate the switching control of the primary and secondary rocker arm, and the stitch and backstitch motion of the sowing machine are switched.

Description

Sewing Machine Back Stitch Of Switch Controller

Technical field

The utility model is about Sewing Machine Back Stitch Of Switch Controller, refers to a kind of electronic type control especially, precisely drive just, backstitch switching control, can improve known mechanically operated component wear, misoperation, also reduce the running noise.

Background technology

Known, employed Sewing machines with the function of backstitching all is the switching device shifter that is provided with the clutch module in seeing through one by one at present, see through the driving of a manual or electronic switching control, with as just, backstitch and switch feeding control, design and the control action let alone at switching control and switching device shifter thereof, all will directly react Sewing machines just, backstitch the control usefulness of switching with feeding, so one the design let alone of good switching control or switching device shifter is arranged, will promote and be applied to the control and action smoothness that Sewing machines aligned, backstitched switching.

" industrial sewing machine backstitch structure " utility model patent case as present Taiwan patent gazette M277759 number, the emphasis of this patent case institute demand is that following feed spool one end at Sewing machines is provided with a switching device shifter, switching device shifter sees through first, second rocking arm and straight-bar, connecting rod is with transmission needle bar axle and go up axle, be provided with a pull handle in body in addition, turn-button device in pull handle and the body, the pull bar top is connected in the turn-button rear end, the pull bar bottom is provided with one year seat, carry on the seat and radially be pivoted with a rotating shaft, shaft set one torque spring, the one end is connected with pull bar, the other end is provided with a push rod, moving part forms a long slot bore again, that slides in the long slot bore is equipped with a roller, be pivoted with a swing arm on the moving part of roller side, swing arm is hung with the push rod bottom surface, it is held in addition and has extended a hook part, the hook part is positioned at the roller root edge, roller opposite side and traction piece one end articulate, the traction piece other end is hubbed at the pressing plate bottom, pressing plate top and the swivel base that is fixed in the body articulate the axle contact of pressing plate apical margin inner face and switching device shifter; When implementing to backstitch, making the user draw pulling pull handle to drive turn-button rotates, carrying on the drawing pull bar, and drive rotating shaft and reverse, make push rod press the cantilever beat, while hook part interlock roller, roller opposite side traction piece is to pull and support pressing plate to press axle, changes continuing of axle transmission power and each unilateral bearing, makes each unilateral bearing connect, and be subjected to straight-bar, first rocking arm and the connecting rod of its promotion, second rocking arm to produce reverse passing, to reach its usefulness that backstitches of control.

But, above-mentioned patent case is applied to the switching controls of switching device shifter and forms the assembly complexity, and on the driving traverse of switching controls, by pull handle, turn-button, pull bar, the rotating shaft that is provided with torque spring produces pressing action with rotating push-rod, see through swing arm again, tumbler, the hook part is with the hook roller, could pull and support pressing plate to compress the axle of switching device shifter by indirect driving traction piece, producing switching device shifter to following feeding rod just reaches, backstitch switching controls, obviously the control traverse is quite complicated, easily cause the action hysteresis and the precision problem of transmission between multicompartment, its composition cost and maintenance cost are all comparatively high certainly.

This creator also once proposed one " Sewing Machine Back Stitch Of Switch Controller " to the problems referred to above, (see also Figure 12 as application number the 95209754th patent case, shown in 13), the creation of this patent case mainly is converted to vertical traverse motion in the pressure of utilizing a gear unit 81 will dial control 80, and directly drive the clutch module (being that this creator proposes " Sewing Machine Back Stitch Of Switch Clutch " M296256 number) of establishing in axle 831 cooperations of a casting die 82 voltage-controlled switching device shifters 83, cooperate first,

second joystick

87,88 with to last, following

feeding unit

84,85 and needle bar control module 86 clockwise just stitching and reversing and backstitching the feeding switching controls.

The utility model then is under the patent application case framework of the utility model of the application number the 95209754th created the creator and M296256 patent case, remakes further research and development and obtains.

The utility model content

Main purpose of the present utility model, be to solve above-mentioned tradition disappearance, avoid disappearance to exist, the present invention utilizes first and second electronic switch reaction to dial control and dials the control action, see through electronic switch mechanism and order about a transmission mechanism interlock casting die, produce switching controls with the switching device shifter that drives Sewing machines to first, second rocking arm, with switch Sewing machines clockwise just stitching and reversing backstitch the feeding switching controls, providing the user easier, the cheap but practical Sewing Machine Back Stitch Of Switch Controller of high precision action control.

For reaching above-mentioned purpose and effect, technological means of the present utility model, mainly provide a kind of Sewing Machine Back Stitch Of Switch Controller, be applied to Sewing machines and produce the control of first, second rocking arm being switched transmission to drive its switching device shifter, and control upper and lower feeding unit form clockwise just stitching and reversing backstitch feeding and switch, this switching control includes:

One group of control is located on the sewing machine body, and an end is provided with pinch roller;

One first electronic switch is to press the relation touched to be arranged on the sewing machine body with dialling control;

One second electronic switch is located at the Sewing machines bottom and the first electronic switch electrically connect;

One transmission mechanism is located at sewing machine base and is driven the action that produces a predetermined traverse by second electronic switch;

One casting die, one end utilize an axle bed to be hubbed at the Sewing machines bottom, form contact with switching device shifter and concern, end is the binding drive connection with transmission mechanism in addition;

Wherein, press work by dialling of above-mentioned group of control, touch first electronic switch starting the default traverse action that second electronic switch orders about gear unit generation level, drive switching device shifter with the interlock casting die and produce switching controls first, second rocking arm, with switch Sewing machines just, backstitch action.

In the utility model one preferred embodiment, this first electronic switch is a microswitch, or other touched with generation open and close action or electric signal output assembly, device let alone one.

In the utility model one preferred embodiment, this second electronic switch is an electromagnetic valve, or other is subjected to the control of electronics switching motion, electric signal to let alone one with what produce assembly toward the reaction of renaturation mechanical action, device.

See through such scheme, the utility model can be dialled control by touching, make first, second electronic switch activate transmission mechanism, make casting die drive the switching controls of switching device shifter generation, reach time saving and energy saving, the full-automatic handoff functionality that backstitches, the user is provided optimum convenience first, second rocking arm, when reducing transmission, the parts control of simultaneously full-automatic part consumes, be able to more certain action, also reduce noise, the effective utilization that tool is excellent.

See also the detailed description and the accompanying drawing thereof of following relevant the utility model one preferred embodiment, can further understand technology contents of the present utility model, purpose effect.

Description of drawings

Fig. 1 is incorporated into the composition schematic appearance of Sewing machines for the device architecture of the utility model one embodiment.

Fig. 2 is the perspective exploded view of assemblies such as the device architecture of the utility model one embodiment and switching device shifter.

Fig. 3 is the combination schematic perspective view of assemblies such as the device architecture of the utility model one embodiment and switching device shifter.

Fig. 4 does not backstitch the view of dialling before controlling for group control and first electronic switch of the utility model one embodiment.

Fig. 5 has backstitched the view of dialling after controlling for group control and first electronic switch of the utility model one embodiment.

Fig. 6 is the bottom view of the utility model one embodiment before backstitching group control.

Fig. 7 is the bottom view of the utility model one embodiment after backstitching group control.

Fig. 8 is the forward and backward view of the voltage-controlled gear unit of casting die of the utility model one embodiment.

Fig. 9 is the view of switching device shifter before switching controls not of the utility model one embodiment.

Fig. 9 A is partial enlarged drawing and the cutaway view of Fig. 9.

Figure 10 is the view of switching device shifter after backstitching handover operation of the utility model one embodiment.

Figure 10 A is partial enlarged drawing and the cutaway view of Figure 10.

Figure 11 backstitches switching device shifter composition schematic appearance for the preceding case of this creator application.

Figure 12 backstitches the composition framework schematic perspective view of switching device shifter for the preceding case of this creator application.

The primary clustering symbol description

One, the utility model:

1... backstitch switching control 2... Sewing machines

3... switching device shifter 4... goes up feeding unit

5... following feeding unit 6... needle bar control module

11... dial control 12... first electronic switch

13... the second electronic switch 14... transmission mechanism

15... casting die 16... pivot seat

31... switching shaft unit 32... first transmission group

33... the second transmission group 60... the 3rd electronic switch

61... secondary dialing part 71... first rocking arm

72... the second rocking arm 111... presses portion

130.. holder 141... pole

142... joint seat 143... connecting rod

144... involution assembly 145... lock-in component

311... outer sleeve 312... axle

313... the ball component 314... first hole group

315... group 316... hole, second hole

317... jut 318... elastic component

321,322,331,332... connector

323,324,333,334... Bearing assembly

325,335... first sleeve 326,336... wave wall

711,712,721,722... leg

Two, known:

80... dial control

81... gear unit

82... casting die

83... switching device shifter

84... last feeding unit

85... following feeding unit

86... needle bar control module

87 first joysticks

88 second joysticks

831... axle

The specific embodiment

Now relevant technology contents of the present utility model and detailed description now cooperate graphic being described as follows:

See also shown in Fig. 1,2,3, for combination outward appearance, the assembly of Sewing Machine Back Stitch Of Switch Controller of the present utility model in Sewing machines decomposes and the structural representation that makes up.As shown in the figure: the utility model Sewing Machine Back Stitch Of Switch Controller 1, be applied to Sewing machines 2, produce the control of first, second rocking arm 71,72 being switched transmission to drive its switching device shifter 3, and then control upper and lower feeding unit 4,5 and needle bar control module 6 form clockwise just stitching and reversing backstitch feeding and switch, this switching control 1 mainly comprises one group of control 11, one first electronic switch 12, one second electronic switch 13, a transmission mechanism 14 and a casting die 15.This group control 11 is located on Sewing machines 2 bodies, and be provided with that 12 outstanding of the portion that presses 111, the first electronic switches are fixedly arranged on Sewing machines 2 bodies and with the portion of pressing 111 for pressing the control relation that opens and closes of touching; Second electronic switch 13 utilizes a holder 130 to be located at Sewing machines 2 bodies bottom and first electronic switch, 12 electrically connects, produces Electronic Control action with the shake-up control of reacting first electronic switch 12; This transmission mechanism 14 is located at Sewing machines 2 bodies bottom and is combined with second electronic switch 13, the action that produces a default traverse to accept its Electronic Control action; This casting die 15 utilizes an axle bed 16 to be hubbed on the Sewing machines 2 bodies bottom by the one end, and with the axle 312 formation contact relations of switching device shifter 3, its other end is to link drive connection with transmission mechanism 14.

Above-mentioned first electronic switch 12 is preferable be one touched with generation open and close the electric signal output of action or equivalence assembly, device let alone one, more preferable as microswitch.

Above-mentioned second electronic switch 13 is preferable is one can be subjected to electronics to open and close action or its equivalence electric signal is controlled, and lets alone one with what produce assembly toward the reaction of renaturation mechanical action, device, more preferable as electromagnetic valve.

The above-mentioned transmission mechanism of carrying 14 is made up of a pole 141, a joint seat 142, a connecting rod 143 and an involution assembly 144, and wherein, an end of this pole 141 runs through holder 130 and links with second electronic switch 13; This joint seat 142 is connected to form the synchronization action relation pole 141 and connecting rod 143; One end of connecting rod 143 cooperates involution assembly 144, as spring etc. and lock-in component 145, let alone one as screw rod, screw etc., and link with an end of casting die 15, make pole 141 and connecting rod 143 accept the horizontal stroke that second electronic switch 13 orders about generation, also driven in synchronism casting die 15 produces compressing of angle change formation and acts on switching device shifter 3.

Above-mentioned switching device shifter 3 is located at the bottom of Sewing machines 1 body, comprise that mainly one switches axle unit 31, first transmission group 32 and second transmission group 33, one end of this switching shaft unit 31 links the upper and lower feeding unit 4,5 of transmission, and (this is known structure, please cooperate and consult Figure 12), and by this first transmission group, 32 bindings, first rocking arm 71, second transmission group 33 links second rocking arm 72, (this also is known structure to utilize first, second rocking

arm

71,72 to link control needle bar control module 6, please cooperate and consult Figure 12), switch clockwise just the seam with control and backstitch with reverse;

This switching shaft unit 31, mainly form with most ball components 313 by outer sleeve 311, axle 312, should be provided with first and second hole group 314,315 with a setting spacing on the axial end of outer sleeve 311, and each hole group 314,315 is located on by most holes 316 and forms on the axial end, and group is established a ball component 313 in each hole 316; Axle 312 cooperates elastic component 318 and is movably set in the outer sleeve 311, one end extends and the end that runs through Sewing machines 2 bodies, one wall and casting die 15 is that contact concerns (as shown in Figure 9), the outer surface of axle 312 then is provided with at least one jut 317, make axle 312 compressed the traverse action of generation, switching is to the outside pushing and pressing of ball component 313 in first, second hole group 314,315, with the contact transmission of 313 switchings of ball component in the first or second hole group 314,315 of utilizing top pushed outwards to first transmission group 32 or second transmission group 33;

This first transmission group 32, mainly comprise two connectors 321,322, utilize the Bearing assembly 323,324 and first sleeve 325 group that is nested, first sleeve, 325 inwalls are provided with wave wall 326 with corresponding with the switching shaft unit 31 and the first hole group 314 thereof, and the recess that the ball component 313 that switching is extrapolated by first group of hole 314 can be resisted against wave wall 326 forms the binding form;

This second transmission group 33, roughly the same with above-mentioned first transmission group 32, mainly comprise two connectors 331,332, utilize the Bearing assembly 333,334 and second sleeve 335 group that is nested, second sleeve, 335 inwalls are provided with wave wall 336 with corresponding with the switching shaft unit 31 and the second hole group 315 thereof, and the recess that the ball component 313 that switching is extrapolated by second group of hole 315 can be resisted against wave wall 336 forms the binding form.

Described first, second rocking

arm

71,72 respectively is provided with two legs 711,712,721,722, be connected with the connector 321,322 of first transmission group 32 and the connector 331,332 of second transmission group 33 respectively, the end in addition of first, second rocking

arm

71,72 then is the binding drive connection with needle bar control module 6.

This needle bar control module 6, mainly in order on the control needle bar (not illustrating among the figure), following pin needs in just, when backstitching the generation time difference to needle bar under the pin time, in other words, in just, the following pin that backstitches has 180 ° differing opportunity, and this just, backstitching down pin differs and is controlled by one the 3rd electronic switch 60, the 3rd electronic switch 60 is preferable also can be an electromagnetic valve, be located on Sewing machines 2 bodies, cooperating a secondary dialing part 61 is continuous action relation with dialling control 11, as Fig. 4, shown in 5, promptly backstitch and dial the control action by the switching of dialling control 11, order about secondary dialing part 61 startups the 3rd electronic switch 60 pin that send that differs of 180 ° of needle bar control module 5 generations is switched opportunity, to improve the known disappearance of utilizing rocking arm to drive.

See also Fig. 4 to shown in Figure 10, be each the parts action schematic diagram of Sewing Machine Back Stitch Of Switch Controller of the present utility model and the schematic diagram of the controlled generation change action of switching device shifter.As shown in the figure: Sewing Machine Back Stitch Of Switch Controller 1 of the present utility model, be disposed in the Sewing machines 2 and keep contact and do not compress state in normality with switching device shifter 3, shown in Fig. 8 A, in other words, the switching device shifter 3 of this Sewing machines 2 generally is to be set at the seam state of just becoming a full member, at this moment, the switching shaft unit 31 of switching device shifter 3, be that ball component 313 by the extrapolation of the first hole group 314 forms the contact binding with first sleeve 325 of first transmission group 32 and the recess of wave wall 326 thereof, on drive controlling, following feeding unit 4,5 and utilize first rocking arm 71 to drive needle bar control modules 6 to form and just stitching feeding and sewing, as Fig. 4,6, shown in 9.

When the user will backstitch use, depress the shifting part 11 that backstitches switching control 1, the portion that presses 111 on the shifting part 11 triggers first electronic switch 12, as shown in Figure 5, and produce an Electronic Control signal and start second electronic switch 13, then, the pole 141 and the connecting rod 143 traverse displacement of generation one horizontal axis synchronously of gear unit 14 ordered about in 13 actions of second electronic switch, at this moment, the also synchronous interlock casting die 15 of connecting rod 143, cooperate being pivoted of axle bed 16, it is the angle tilting of pivot that casting die 15 is produced with axle bed 16, in other words, casting die 15 is pulled and the switching shaft unit 31 of voltage-controlled switching device shifter 3 and axle 312 thereof produce a traverse and move, shown in Fig. 7 and Fig. 8 B;

The axle 312 of this switching device shifter 3 is urged the traverse displacement of generation, to make its jut 317 break away from extrapolation action to the set ball component 313 of the first hole group 314, and link with the contact of first sleeve 325 of first transmission group 32 and wave wall 326 recesses thereof, and then switch to the action that the second hole group, 324 set ball components 313 is imposed outside ejection, and then form the driving condition that contact links with second sleeve 335 of second transmission group 33 and wave wall 336 recesses thereof, as shown in figure 10, at this moment, the switching shaft unit 31 of switching device shifter 3 reaches and sees through second rocking arm 72 with on the drive controlling, following feeding unit 4,5 and needle bar control module 6 form and backstitch feeding and sewing.

Above-mentioned is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model.Be that all equalizations of being done according to the utility model claim change and modification, be all the utility model claim and contain.

Claims

1, a kind of Sewing Machine Back Stitch Of Switch Controller is applied to Sewing machines and produces the control of first, second rocking arm being switched transmission to drive its switching device shifter, and control upper and lower feeding unit form clockwise just stitching and reversing backstitch feeding and switch;

It is characterized in that: this switching control includes:

One group of control, an end is hubbed on the sewing machine body;

One casting die is hubbed at the Sewing machines bottom, and one end and transmission mechanism are the binding drive connection, and forms the contact relation with switching device shifter;

Dialling of above-mentioned group of control pressed to touch first electronic switch, first electronic switch starts second electronic switch and orders about the default traverse action of gear unit generation, drive switching device shifter with the interlock casting die and produce switching controls first, second rocking arm, with switch Sewing machines just, backstitch action.

2, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 1 is characterized in that: this group control more comprises: be provided with an outstanding portion that presses, touch the control relation that opens and closes with first electronic switch for pressure.

3, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 1 is characterized in that: this first electronic switch be a microswitch, other touched with generation open and close action or electric signal output assembly, device let alone one.

4, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 1 is characterized in that: this second electronic switch is an electromagnetic valve, other is subjected to the control of electronics switching motion, electric signal to let alone one with what produce assembly toward the reaction of renaturation mechanical action, device.

5, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 1 is characterized in that: this transmission mechanism is made up of a pole, a joint seat, a connecting rod; One end of this pole links with second electronic switch, and this joint seat links pole and connecting rod forms the synchronization action relation.

6, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 5 is characterized in that: this transmission mechanism more comprises: an involution assembly and a lock-in component is the synchronization action relation to link above-mentioned connecting rod and casting die.

7, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 1 is characterized in that: this switching device shifter is located at the bottom of sewing machine body, mainly switches axle unit, first transmission group and second transmission group by one and is constituted; One end of this switching shaft unit links the upper and lower feeding unit of transmission, and link first rocking arm by this first transmission group, second transmission group links second rocking arm, backstitches just to stitch with reverse by first, second rocking arm binding control needle bar control module control switching conrotatory.

8, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 7 is characterized in that: this switching shaft unit mainly comprises: outer sleeve, axle and most ball components are formed;

Should be provided with first and second hole group with a setting spacing on the axial end of outer sleeve, each hole group is located on the axial end by most orifice rings and is formed, and group is established a ball component in each hole;

This axle is movably set in the outer sleeve, one end extends and the end that runs through sewing machine body one wall and casting die is that contact concerns, outer surface in axle is provided with at least one jut in addition, with corresponding at least first, second hole group let alone that ball component outwards pushes against in one the hole, and with the contact transmission of letting alone of first transmission group, second transmission group.

9, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 7, it is characterized in that: this first transmission group mainly comprises two connectors, utilize the Bearing assembly and first sleeve group that is nested, the first sleeve inwall is provided with the wave wall, with corresponding, let alone one binding form by what the ball component of extrapolation was resisted against that the recess of wave wall just forming, backstitching with the switching shaft unit and the first hole group thereof.

10, Sewing Machine Back Stitch Of Switch Controller as claimed in claim 7, it is characterized in that: this second transmission group mainly comprises two connectors, utilize the Bearing assembly and second sleeve group that is nested, second inwall is provided with the wave wall, with corresponding, let alone one binding form by what the ball component of extrapolation was resisted against that the recess of wave wall just forming, backstitching with switching shaft unit and second group.