CN201634861U

CN201634861U - Presser foot hoisting structure of sewing machine

Info

Publication number: CN201634861U
Application number: CN2010201615053U
Authority: CN
Inventors: 顾飞龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-13
Filing date: 2010-04-13
Publication date: 2010-11-17
Anticipated expiration: 2020-04-13

Abstract

The utility model relates to a presser foot hoisting structure of a sewing machine, which mainly comprises a power source. A transmission rod of the power source is assembled with one end of a connecting rod, the other end of the connecting rod is pivoted to one end of a connecting piece, and a slotted hole is formed at a pivoting position of the connecting rod and the connecting piece. Therefore, during assembly, the power source is assembled on a body of the sewing machine, and the other end of the connecting piece is pivoted with a swinging piece of the sewing machine. When needing to perform operations including disassembling and repairing needle boards and the like, a user needs to hoist a presser foot to a higher height based on the normal stroke through the steps: moving the swinging piece downwards, leading the connecting piece assembled with the swinging piece to match with movement of the swinging piece and then move a certain distance smoothly by utilizing the slotted hole formed with one end of the connecting rod, and then enabling the swinging piece to drive the presser foot to raise to a certain height, thereby facilitating maintenance of the user.

Description

Sewing-machine foot promotes structure

Technical field

The utility model relates to a kind of sewing-machine foot and promotes structure.

Background technology

General Sewing machines all can be set up presser feet, being used for when the sewing cloth, makes cloth when the sewing by presser feet, can keep the effect of smooth wrinkle resistant folding, and after the cloth sewing is finished, make presser feet raise certain height again, so that the cloth activity detaches Sewing machines.

And the structure of existing Sewing machines lifting presser feet, see also " Sewing machines " of the Taiwan patent (announcing No. 427355) of the previous application of the application applicant, this Sewing machines sets firmly main frame on the machine plate, again at the main frame swing sheet that is pivoted, when presser feet control structure interlock swing sheet, the linkage in the main frame can do to promote action by the interlock presser feet; Set firmly a positioning rod in machine plate bottom side in addition, be pivoted pulley for the winding of interlock bar in the location rod end again, the terminal operating bar with electromagnetic valve of interlock bar is affixed; During use, electromagnetic valve energising or outage make its operating bar make move left and right, to spur or not spur the interlock bar, drive pressure foot lifting or reply action further to order about the swing sheet.

Announce the structure of " Sewing machines " that disclose for No. 427355 and make flowing mode as can be known according to above-mentioned Taiwan, the action of its presser feet mainly is after the operating bar by electromagnetic valve draws the interlock bar of pulling, drive backstay and swing sheet again, do the start that promotes or reply to drive presser feet, reach automation control purpose, and the operating bar movement travel of general electromagnetic valve has only and stretches out fully and regain two sections variations fully, therefore, only can drive presser feet in its start merely and do the action that promotes with answer, when running into to keep in repair the time, sometimes needle plate must be taken out by Sewing machines, but often be subject to the position of presser feet, make maintenance work very difficult, if can in time presser feet be improved again, the space that can have greatly improved is convenient to needle plate is taken out, but the stroke of above-mentioned disclosed " Sewing machines " start presser feet is for fixing, so the space that haves much room for improvement on maintenance activity.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of at above-mentioned prior art can cooperate maintenance activity, make presser feet under normal actuating length, the certain altitude that rises again promotes structure with convenient user to the sewing-machine foot that presser feet or needle plate carry out maintenance activity.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this sewing-machine foot promotes structure, it is characterized in that comprising:

One power source is assemblied on the Sewing machines, and has protruded out a power transmission shaft;

One connecting rod, first end of this connecting rod and the drive link of power source are connected with group, and second end of this connecting rod is formed with long slot bore;

A connecting piece, first end of this brace is articulated in the long slot bore of connecting rod with a pivot activity, and second end of this brace is formed with an articulated section, is used for and can be connected with group for the swing sheet that the interlock sewing-machine foot promotes.

As improvement, described brace further includes a long slot bore with the articulated section that the swing sheet is connected with group, and also is formed with a blocking part on described brace, to be butted on swing sheet upper limb.

Compared with prior art, advantage of the present utility model is:

1, the utility model makes the drive link winding connecting rod of power source, make connecting rod articulate brace again, the swing sheet of brace and Sewing machines is articulated, wherein, the end that connecting rod and brace are articulated is provided with long slot bore, by this, when desiring to make presser feet under normal actuating length, when drawing high certain altitude again, the long slot bore that utilizes this connecting rod one end to be shaped can make brace cooperate displacement action, and make the swing sheet be able to smooth and easy displacement, with the interlock presser feet certain altitude that rises again, reach and make things convenient for the user needle plate to be pulled down operations such as maintenance.

2, the utility model makes the drive link winding connecting rod of power source, make connecting rod articulate brace again, the swing sheet of brace and Sewing machines is articulated, wherein, this brace is formed with long slot bore with the end that the swing sheet articulates, and the design of long slot bore by this can make brace cooperate more smooth and easy with the action of swinging between sheet, be unlikely the middle dead point that produces that relatively moves, and the situation that generation can't be moved.

Description of drawings

Fig. 1 is the overall diagram of the utility model embodiment;

Fig. 2 is the partial perspective view of the utility model embodiment;

Fig. 3 is the state diagram of the utility model embodiment when presser feet resets;

Fig. 4 is the state diagram of the utility model embodiment when pressure foot lifting;

Fig. 5 is the state diagram of the utility model embodiment when presser feet further promotes.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

At first, see also Fig. 1, shown in Figure 2, this Sewing machines 1, be provided with a swing sheet 11 in board one side, this swing sheet 11 is provided with linkage part in board inside, in order to do interlock with the presser feet 12 of Sewing machines 1 front end, make when swing sheet 11 is stressed to press down rotation displacement, can make and carry a predetermined altitude on the presser feet 12, and sewing-machine foot of the present utility model promotes structure, it mainly comprises power source 2, connecting rod 3 and brace 4; Wherein:

Described power source 2 is assembled on the Sewing machines 1, and driven by a signal, and described power source 2 protrudes out a drive link 21;

First end of described connecting rod 3 and the drive link 21 of power source 2 are connected with group, and the second end place of described connecting rod 3 is formed with long slot bore 31;

First end position of described brace 4 is in long slot bore 31 places of connecting rod 3, first end of described brace 4 has a pivot 41, this pivot 41 is arranged in the long slot bore 31 of connecting rod 3, thereby connecting rod 3 and brace 4 first ends are articulated, the swing sheet 11 of the other end of brace 4 and Sewing machines 1 is articulated, the other end that this brace 4 and swing sheet 11 are articulated is then worn the long slot bore 42 of brace 4 by a pivot 44, articulate with swing sheet 11 again, brace 4 is convexly equipped with a blocking part 43 in addition, to be butted on swing sheet 11 upper limbs.

In view of the above, when the presser feet 12 of desiring to make Sewing machines 1 draws high, see also shown in Figure 3, when the user comes to an end in the sewing action, oppositely trample to pedal, withdraw to send the drive link 21 that a signal orders about power source 2 backward, simultaneously, and connecting rod 3 actions of interlock winding, subsequently, connecting rod 3 drives the brace 4 that the is articulated displacement certain amplitude of turning right, and then, the swing sheet 11 that is articulated with brace 4 is driven by brace 4 displacements, and down do the swing [as shown in Figure 4] of an amplitude, when this, the presser feet 12 that is connected with swing sheet 11 is promptly driven rising, makes cloth can detach Sewing machines 1;

Then, if when the user wants the new cloth of sewing again, see also shown in Figure 4, the answer that treadles to send the signal of return, is ordered about drive link 21 projections of power source 2 and is returned original position, then, 4 quilts of brace that are articulated in connecting rod 3 other ends drive displacement of turning left, then, also get back to the origin-location with the swing sheet 11 that brace 4 is articulated, at this moment, presser feet 12 is synchronously toward bottom offset, to press on cloth [as shown in Figure 3], keep cloth smooth, be beneficial to carry out sewing next time.

Moreover, when running into repair and will tear needle plate open, please consult shown in Figure 4 more in the lump, make power source 2 its drive link 21 post-tensionings of action earlier, the connecting rod 3 that is articulated with the drive displacement of turning right, the brace 4 that pulling simultaneously is articulated down be shifted, and presses and swing sheet 11 to lower swing, at this moment, promptly driven with the presser feet that is connected of swing sheet 11 12 and risen; Driven under the normal travel that rises at this presser feet 12, the pivot 41 that articulates connecting rod 3 and brace 4 is positioned at long slot bore 31 left sides of connecting rod 3, and when making presser feet 12 further promote its height, so that needle plate is pulled down when maintenance, see also shown in Figure 5, the user presses swing sheet 11 with subordinate, to drive further displacement action down of swing sheet 11, and the long slot bore 31 that utilizes connecting rod 3 one ends to be shaped, when making swing sheet 11 toward lower swing, the brace 4 that joins with swing sheet 11 can cooperate synchronous shift one amplitude, this moment, the pivot 41 of brace 4 can be moved on to the right side of long slot bore 31 by the left side of long slot bore 31, so, just can make the 11 smooth and easy starts of swing sheet, to drive presser feet 12 certain altitude that rises again, in view of the above, under enough height, can be user-friendly for and needle plate be pulled down operations such as maintenance.

Claims

1. a sewing-machine foot promotes structure, it is characterized in that comprising:

2. sewing-machine foot according to claim 1 promotes structure, it is characterized in that: described brace also includes a long slot bore with the articulated section that the swing sheet is connected with group, and also is formed with a blocking part on described brace, to be butted on swing sheet upper limb.