Summary of the invention
The present invention will solve above-mentioned prior art Problems existing, provides a kind of needle gage governor motion of domestic sewing machine, solves that current domestic sewing needle pitch adjustment process is loaded down with trivial details, the problem of troublesome poeration, meets the user demand of domestic sewing machine.
The present invention solves the technical scheme that its technical problem adopts: the needle gage governor motion of this domestic sewing machine, comprises needle gage support, and needle gage support is provided with knob fulcrum, knob fulcrum is provided with needle gage cam; The left surface of needle gage cam is connected with needle gage adjusting rod by rotating shaft, one end of this needle gage adjusting rod and the cam surface of needle gage cam, the other end of needle gage adjusting rod is connected with needle pitch base connecting rod, and needle pitch base connecting rod is connected with needle pitch base; The side of needle gage cam is provided with needle gage perception shell fragment, needle gage support is provided with needle gage perception substrate, needle gage perception shell fragment and needle gage perception substrate contacts.
Perfect further, the L-shaped setting of needle gage adjusting rod.
Perfect further, knob fulcrum is connected with stitch length knob.
Perfect further, the outer ring of needle gage cam is provided with one group of locating aperture, and needle gage support is provided with the needle gage Location resilient piece stopping with locating aperture and coordinate.
The effect that the present invention is useful is: the needle gage governor motion of domestic sewing machine of the present invention, rational in infrastructure, easy to use, when needle gage regulates, Sewing machines can send useful information to user, simple to operation, be applicable to house person operation, can improve the operating efficiency of domestic sewing machine, practical application effect is good, is beneficial to popularization.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
With reference to accompanying drawing: the needle gage governor motion of this domestic sewing machine in the present embodiment, comprises needle gage support 1, and needle gage support 1 is provided with knob fulcrum 8, knob fulcrum 8 is provided with needle gage cam 2; The left surface of needle gage cam 2 is connected with needle gage adjusting rod 3 by rotating shaft, one end of this needle gage adjusting rod 3 and the cam surface of needle gage cam 2, the other end of needle gage adjusting rod 3 is connected with needle pitch base connecting rod 4, needle pitch base connecting rod 4 is connected with needle pitch base 5; The side of needle gage cam 2 is provided with needle gage perception shell fragment 6, needle gage support 1 is provided with needle gage perception substrate 7, needle gage perception shell fragment 6 contacts with needle gage perception substrate 7.
The L-shaped setting of needle gage adjusting rod 3.
Knob fulcrum 8 is connected with stitch length knob 9.
The outer ring of needle gage cam 2 is provided with one group of locating aperture 10, and needle gage support 1 is provided with and stops with locating aperture 10 the needle gage Location resilient piece 11 coordinated.
Sewing machines is provided with control circuit board, display screen and sounding component, control circuit board and display screen, sounding component all realizes electrical connection, control circuit board adopts MCU controller, control is performed according to the program of setting, control circuit board is also provided with memory and sensor, multiple stitching needle gage information is store in memory, the needle gage perception substrate 7 that the needle gage perception shell fragment 6 that needle gage cam 2 is installed and needle gage support 1 are installed together form a multichannel band switch, when needle gage cam 2 rotates, the current positional information of needle gage cam 2 is just sent the current position signal of needle gage cam to the control unit of Sewing machines by this band switch, then control unit contrasts according to the relevant information of the positional information received and memory storage, and by comparative information display on a display screen, if needle gage position is improper, then sounded by machine, prompting mistake, and on a display screen corresponding error message is shown.
During use, user rotates stitch length knob 9 and carries out needle gage adjustment, stitch length knob 9 rotarily drives knob fulcrum 8 and rotates, needle gage cam 2 is driven to rotate again, needle gage cam 2 rotates promotion needle gage adjusting rod 3 and swings up and down, needle gage adjusting rod 3 swings up and down and drives needle pitch base connecting rod 4 to move, thus drive needle pitch base 5 to forward the adjustment that predetermined angle carries out needle gage to, when needle gage cam 2 rotates, needle gage perception shell fragment 6 moves simultaneously, needle gage perception shell fragment 6 thus form multichannel band switch with needle gage perception substrate 7, carries out information transmission.
During use, user rotates stitch length knob 9 and carries out needle gage adjustment, Sewing machines can show the whether applicable current style of needle gage that user regulates on a display screen, be divided into these states best, available, unavailable, help user's rapid adjustment to suitable position, when the special operational such as carry out that buttonhole is made, as long as stitch length knob 9 is adjusted to corresponding gear, machine can set the length and width of making automatically, adjustment process is simple, simple to operation, be applicable to house person operation, the operating efficiency of domestic sewing machine can be improved.
By rotating shaft connecting needle distance regulating rod on the left surface of needle gage cam.
The needle gage governor motion of domestic sewing machine of the present invention, be applied on Sewing machines as shown in Figure 3, Fig. 3 is the structural representation be applied on Sewing machines, Sewing machines shown in Fig. 3 structurally includes sewing machine frame, sewing machine frame is provided with mair motor, the output of mair motor is connected with belt pulley, belt pulley is arranged on sewing machine frame, belt pulley is connected with main shaft, the output of main shaft is provided with shank, the output of shank is provided with eedle, the below of eedle is provided with cloth conveying teeth, cloth conveying teeth is arranged on sewing machine frame, control circuit board is arranged on main shaft, Fig. 2 is needle gage adjustment structure schematic diagram, needle pitch base has groove, slide block is provided with in groove, slide block is connected with tooth fork, slide block is connected to the middle part of tooth fork, main shaft is provided with eccentric wheel, one end of tooth fork is connected on sewing machine frame, the other end of tooth fork contacts with eccentric wheel, the output of main shaft is provided with principal axis balance cam, principal axis balance cam is provided with small rod, the output of small rod is connected with shank, the below of cloth conveying teeth has needle plate, needle plate is arranged on sewing machine frame, the below of needle plate has shuttle, shuttle is arranged on sewing machine frame, needle plate has presser feet, needle gage is formed and Principles of Regulation: during main axis, tooth fork is driven to swing by the eccentric wheel on it, live physical pendulum before and after the swing drive cloth conveying teeth of tooth fork to move, thus formation needle gage, by regulating the needle pitch base angle be connected on tooth fork, change the amplitude that cloth conveying teeth swings, thus carry out the adjustment of needle gage, the concrete adjustment process of needle gage is: rotate stitch length knob 9, stitch length knob 9 rotarily drives knob fulcrum 8 and rotates, needle gage cam 2 is driven to rotate again, needle gage cam 2 rotates promotion needle gage adjusting rod 3 and swings up and down, needle gage adjusting rod 3 swings up and down and drives needle pitch base connecting rod 4 to move, thus drive needle pitch base 5 to forward the adjustment that predetermined angle carries out needle gage to, the course of work of Sewing machines sewing is: start mair motor, mair motor startup drives belt pulley successively, main shaft, shank, eedle moves, then cloth conveying teeth work feed, realize sewing, when needing needle gage to regulate, needle gage adjustment is carried out with regard to turning knob 9, the present invention also can be applicable on common Sewing machines.
The feature of the embodiment of the present invention is: rational in infrastructure, easy to use, when needle gage regulates, Sewing machines can send useful information to user, simple to operation, is applicable to house person operation, can improve the operating efficiency of domestic sewing machine, practical application effect is good, is beneficial to popularization.
Although the present invention has illustrated by reference to preferred embodiment and has described, those skilled in the art should understand, and in the scope of claims, can do the various change in form and details.