CN2898076Y

CN2898076Y - Sewing machine presser foot driving structure

Info

Publication number: CN2898076Y
Application number: CN 200620012816
Authority: CN
Inventors: 廖金旺; 林春祥
Original assignee: Ming Jiang Sewing Machine Co ltd
Current assignee: Ming Jiang Sewing Machine Co ltd
Priority date: 2006-04-07
Filing date: 2006-04-07
Publication date: 2007-05-09
Anticipated expiration: 2016-04-07

Abstract

The utility model discloses a sewing machine compress foot drive structure, it sets up the linkage in order to lead this sewing machine on a sewing machine, makes the compress foot of this linkage one end produce the compress or carry the foot action, and it includes: the sewing machine comprises a group of fixed frames arranged on the sewing machine, an actuator arranged on the fixed frames and provided with a push rod, wherein the push rod is used for pushing a transmission piece of a connecting rod group provided with cloth pressing feet so as to drive the connecting rod group to form cloth pressing and foot lifting actions of the cloth pressing feet, when the foot lifting actions are carried out, the axis of the push rod and the axis of the transmission piece are right-angled, the reverse force transmitted by the transmission piece is just coaxial with the axis of the push rod and is positive force, so that the push rod and the actuator cannot be damaged by shearing stress, and the service life of the actuator is prolonged.

Description

Cloth pressing pin drive structure of sewing machine

Technical field

The utility model relates to a kind of Sewing machines, relates in particular to a kind of driving structure that Sewing machines compress foot-propelled is done that drives.

Background technology

The compress pin of Sewing machines is requisite member in the feed mechanism of Sewing machines, and it makes machine can stablize feeding in order to compress or to clamp sewing, thereby the wire loop that guarantees needlework is shaped smoothly and is colluded device and hooks reliably; And when sewing need take out, the compress pin need be done one and lift the foot-propelled work so that mobile sewing.

General Sewing machines of the prior art utilizes manual type directly the linkage that links to each other with the compress pin to be operated.And control the compress pin lift that foot-propelled is done or the compress action must continue to compress linkage with foot or hand, simultaneously sewing is done and pulled action, preferable mode of operation has appearred afterwards, announce the drive controlling electromagnet apparatus that discloses a kind of Sewing machines in M252719 number as the TaiWan, China utility model patent, it is to connect a controller with a single pedal, and the compress pin is risen with control drive unit drives electromagnet interlock one lead agency, wherein this lead agency is located at Sewing machines inside, drive this compress pin via the linkage of complexity, this kind design exists a lot of problems, for example because the long-time use of connecting rod, make metal produce tired easily and damage, too complicated connecting rod relation also makes machine produce fault easily and reduces its service life.

" electromagnetic driver of Sewing machines " of TaiWan, China patent of invention I246547 number and for example, a kind of compress foot driving device that is arranged at the Sewing machines outside is wherein disclosed, it utilizes the catch bar of electromagnetic valve to promote the outside connecting rod of linkage with vertical direction, make compress pin generation compress or carry the foot-propelled work, wherein, on catch bar produces when electromagnetic valve is subjected to galvanomagnetic-effect, mobile down stroke, during the catch bar elongation outside connecting rod is pressed down generation and carry the foot-propelled work, so carrying foot-propelled each time does all to make outside connecting rod that catch bar is produced shear stress, catch bar with will cause wearing and tearing and deflection between electromagnetic valve is relative, electromagnetic valve is damaged.

In sum, reaching identical purpose and function as how preferable mechanism's configuration, and reach the effect that reduces cost, is to be those skilled in the art's urgent problem.

The utility model content

Main purpose of the present utility model is to overcome the defective of prior art, and a kind of cloth pressing pin drive structure of sewing machine is provided, and its abrasion that can reduce between the catch bar of the connection rod set that is provided with the compress pin and actuator produces, and increases the service life of this actuator.

For achieving the above object, cloth pressing pin drive structure of sewing machine of the present utility model is arranged on the Sewing machines, be used for leading the connection rod set of Sewing machines, make the compress pin of described connection rod set one end produce compress or carry the foot-propelled work, it comprises: one is mounted on the solid frame of Sewing machines; One is disposed at the actuator on the solid frame, and actuator possesses a catch bar; One connection rod set, connection rod set one end winding compress pin, the other end is provided with a driving member, with with the mutual interlock of catch bar with the compress that produces the compress pin or carry foot-propelled and do, wherein, actuator shaft is to becoming an inclination angle with vertical reference line, and is positioned at the compress pin and carries the place, summit that foot-propelled is done, and the relative position of the axis of catch bar and the axis of driving member is rectangular.

Preferably, above-mentioned solid frame possesses has one to establish an end and a socket end in order to the group that is mounted on Sewing machines, and socket end and group are established and also be provided with a tilting section between the end to form the inclination angle.

Preferably, above-mentioned actuator is the cylinder that is connected with air compressor.

Preferably, above-mentioned actuator is the electromagnetic valve that electric power activates.

Preferably, above-mentioned Sewing machines comprises a holder being arranged on the workbench, and solid frame is locked in holder.

Preferably, the said fixing seat can be for the CD-ROM drive motor that drives the Sewing machines action is set.

Preferably, above-mentioned inclination angle is 15 degree.

Because the actuator that the utility model uses is to be positioned on the Sewing machines by a solid frame, actuator is provided with a catch bar and with the driving member that promotes connection rod set the compress pin is mentioned, wherein, the relative vertical reference line of this catch bar forms an inclination angle, when the compress pin being positioned at carry the place, summit that foot-propelled does, the relative position of this catch bar axis and this driving member axis is rectangular, thereby the opposite force of driving member transmission just and the axis coaxle of catch bar and be positive force, can make that catch bar and actuator are unlikely is subjected to shear stress and damages, and has increased the service life of this actuator.

Description of drawings

Fig. 1 is a stereoscopic schematic diagram of the present utility model.

Fig. 2 is a part decomposing schematic representation of the present utility model.

Fig. 3 is the decomposing schematic representation of another part of the present utility model.

Fig. 4～Fig. 5 is an action schematic diagram of the present utility model.

Fig. 6-1～Fig. 6-the 2nd, the action schematic diagram of another embodiment of the present utility model.

The specific embodiment

Relevant detailed description of the present utility model and technology contents, existing accompanying drawings is as follows:

See also Figure 1 and Figure 2, be respectively stereoscopic schematic diagram of the present utility model and part decomposing schematic representation, as shown in the figure, the utility model relates to a kind of cloth pressing pin drive structure of sewing machine, it is arranged on the Sewing machines 1, connection rod set 40 with the compress pin 47 (please consulting Fig. 4 simultaneously) of leading this Sewing machines 1, make the compress pin 47 of these connection rod set 40 1 ends produce compress or carry the foot-propelled work, wherein this Sewing machines 1 is mounted on one and drives on the holder 2 of motor that this Sewing machines 1 carries out sewing work in order to installing, thereby be installed on the workbench, cloth pressing pin drive structure described in the utility model comprises: one is mounted on the solid frame 30 on this holder 2, this solid frame 30 possesses has one to establish the socket end 31 of end 32 and in order to the moving device 20 of configuration consistency in order to be mounted on group on this holder 2, this solid frame 30 possesses a tilting section 33, so that the axial and vertical reference line of this actuator 20 forms an inclination angle, the best angle at this inclination angle is 15 degree, also being provided with on the actuator 20 can axially movable catch bar 21, this catch bar 21 1 ends configuration one compresses 22 to compress the driving member 41 that promotes these connection rod set 40 1 ends, makes connection rod set 40 drive compress pin 47 and forms above-mentioned compresses or carry foot-propelled and do.

The characteristics of the utility model maximum are to utilize the design at this inclination angle, make catch bar 21 when axial summit and this driving member 41 form right angles, so the opposite force that driving member 41 transmits when carrying foot-propelled and do just and the axis coaxle of catch bar 21 and be positive force at every turn, can make that catch bar 21 and actuator 20 are unlikely is subjected to shear stress and damages, see also Fig. 3, it is part combination schematic diagram of the present utility model, as shown in the figure, in embodiment of the present utility model, connection rod set 40 has comprised the force transmission element that is connected with this actuator 20 and has been subjected to this force transmission element and produces the compress heel piece that straight line moves, force transmission element possesses a center pivot joint block 42 is arranged, to articulate above-mentioned driving member 41 and to be articulated with a plurality of arm of force spares 43, one end of arm of force spare 43 is provided with one in order to mention the drivening piece 44 of these compress pin 47 elements, and wherein this drivening piece 44 touches mutually with the compress heel piece.Please cooperate and consult Fig. 4, shown in Figure 4 is action schematic diagram of the present utility model, as shown in the figure, this compress heel piece comprises that one of winding compress pin 47 moves post 45, mobile post 45 is provided with a contact site 451, for these drivening piece 44 contacts, and be subjected to making mobile post 45 produce vertical moving when this drivening piece 44 drives, on the mobile post 45 relatively an end of this compress pin 47 be provided with a sleeve that possesses spring 461, this spring 461 this move post 45 carry foot-propelled as the time be compressed, under the effect of elastic-restoring force, compress pin 47 can recover the compress state.

Please consult Fig. 4 and shown in Figure 5 simultaneously, be respectively the compress action of compress pin of the present utility model and the action schematic diagram of carrying the foot-propelled work, as shown in the figure, expression shown in Figure 4 compress action of the present utility model, under the state that actuator 20 does not move, the spring 461 of this sleeve provides elastic force that mobile post 45 is pressed down, and makes this compress pin 47 carry out the compress action; And the expression shown in Figure 5 foot-propelled of carrying of the present utility model is done, wherein actuator 20 stretches out its catch bar 21 when being activated, utilizing it to compress 22 depresses driving member 41, transmission by center pivot joint block 42 and arm of force spare 43, drivening piece 44 is driven on the contact site 451 carry, mobile simultaneously post 45 upwards promotes the foot-propelled of carrying that reaches compress pin 47 and does.When mobile post 45 arrives summits (utilizing mobile post 45 to push up the formation of pulling mutually with sleeve 46), the axis of the axis of driving member 41 and catch bar 21 relation that just meets at right angles, feature promptly of the present utility model place.

The utility model does not limit and only can be applicable to the Sewing machines type that connection rod set 40 is located at the outside, see also Fig. 6-1～Fig. 6-2, it is the action schematic diagram of another embodiment of the present utility model, as shown in the figure, this kind Sewing machines 1 ' is that connection rod set 40 is arranged at internal body, this kind Sewing machines 1 ' also can be used mechanism design of the present utility model, by mechanism design of the present utility model, can make equally that catch bar 21 and actuator 20 are unlikely to be subjected to shear stress and to damage.In addition, actuator 20 can utilize cylinder, produces the power source of displacement to utilize the air compressor that connects as catch bar 21, also can utilize the electromagnetic valve of electric power for power source, to lead this catch bar 21.

The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. A sewing machine presser foot drive structure, which is arranged on a sewing machine (1) to guide the connecting rod group (40) of the sewing machine (1), so that the presser foot at one end of the connecting rod group (40) (47) Pressing the cloth or raising the foot, characterized by including:

A set of fixing frames (30) arranged on the sewing machine (1);

an actuator (20) configured on the fixing frame (30), and the actuator (20) is provided with a push rod (21);

A connecting rod group (40), one end of the connecting rod group (40) is assembled with the presser foot (47), and the other end is provided with a transmission member (41) to interlock with the pushing rod (21) To produce the pressing or lifting action of the pressing foot (47), wherein,

The axial direction of the actuator (20) forms an oblique angle with the vertical reference line, and when the presser foot (47) is at the apex of the lifting action, the axis of the push rod (21) is aligned with the transmission The relative position of the axis of part (41) is at right angles.

2. The driving structure of the sewing machine presser foot according to claim 1, characterized in that: the fixing frame (30) has an assembly end (32) for assembly on the sewing machine (1) and a The receiving end (31), further includes an inclined section (33) between the receiving end (31) and the assembly end (32) to form the inclined angle.

3. The driving structure of the sewing machine presser foot according to claim 1, characterized in that: the actuator (20) is a pneumatic cylinder connected with an air compressor.

4. The sewing machine presser foot driving structure according to claim 1, characterized in that the actuator (20) is an electrically actuated solenoid valve.

5. The driving structure of the sewing machine presser foot according to claim 1, characterized in that: the sewing machine (1) includes a fixed seat (2) to be set on a working platform, and the fixed frame (30 ) is locked on the fixed seat (2).

6. The driving structure of the sewing machine presser foot according to claim 5, characterized in that: the fixing base (2) can also be provided with a driving motor for driving the sewing machine (1).

7. The driving structure of the sewing machine presser foot according to claim 1, characterized in that: the inclination angle is 15 degrees.