JP2606431Y2 - Hem pull foot for sewing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a presser with a cloth guide which sew a hem or the like in a sewing machine. .

[0002]

2. Description of the Related Art In a conventional sewing machine, a presser which folds a cloth to sew the cloth is structurally easily deformed in a lateral direction and is low in accuracy, so that the position adjustment of a cloth guide from a needle drop becomes coarse. Further, in the state of being raised and lowered by the operation of the presser lifting lever, the sewing position has not been properly obtained because the object to be upright deformed by the action of the presser spring is inclined.

[0003]

SUMMARY OF THE INVENTION The present invention enables fine adjustment of the distance from the edge of the cloth to the needle drop of the cloth guide and prevents the cloth guide from tilting and changing the position from the needle drop. The purpose of the present invention is to provide an improved plan of the hem presser foot.

[0004]

The present invention enables fine adjustment by adjusting the position of the cloth guide by rotating an operating wheel on a screw shaft, and also maintains the verticality of the cloth guide while maintaining the verticality of the cloth guide. By providing the possibility, a change in the position of the cloth guide is prevented.

[0005]

According to the present invention, in a hem pulling press comprising a presser body pivotally supported by a presser holder attached to a presser bar of a sewing machine, a needle drop portion is recessed slightly behind the presser main body, and a proper position in front is provided. A screw shaft is supported by a supporting portion projecting upward, and is vertically movably supported on the screw shaft, extends long in the feed direction, and has a lower edge projecting downward from the lower surface of the holding body. The guide plate is provided with a hollow shape, and a hollow hole is formed in the guide plate, so that the compression amount of the hollow hole changes even if the thickness of the cloth on which the folded portion is guided by the guide plate is variously changed. As a result, the vertical position of the guide plate is maintained, so that the dimensions from the turn-up portion to the sewing position are always obtained accurately.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below. A needle bar 2 supported at an appropriate position of an arm frame 1 of the sewing machine is reciprocated substantially vertically in synchronization with rotation of a drive shaft (not shown), and a needle 3 is replaceable at a lower end of the needle bar. It is fixed. The arm machine frame 1 further has a presser bar 4 with the needle bar 2.
The holding member 5 is fixed to the lower end of the holding rod 4 with a tightening screw 6.

On the lower surface of the presser holder 5, various cloth pressers are exchangeably and swingably mounted. A connecting pin 8 is provided on the upper surface slightly behind the pressing body of the hem pulling presser 7 of the cloth presser to be connected to a locking portion provided on the lower surface of the presser holder 5, and a portion recessed from the right side surface. Is provided with a needle drop portion 9 (see FIG. 3), a supporting portion 10 protruding from the front upper surface, and a screw shaft 11 is horizontally supported by the supporting portion. Two U-shaped support portions 12, 12 are fitted on the screw shaft, and a right-side support portion is provided with a vertically extending and vertically falling plate-like guide plate 13 extending in the forward and backward feed directions. The lower end of the guide plate projects downward from the lower surface of the presser main body 7 in a state in which the lower end of the guide plate is lifted up by an operation of a presser upper lever (not shown).

[0008] A long hollow 14 is formed in the vertical dropping portion of the guide plate along the feed direction (see FIG. 4).
At the rear upper end of the vertical dropout portion, a horizontal projection 15 is provided, which is engaged with a stopper 16 extending in the lateral direction at the front of the needle dropping portion 9 to prevent backward rotation. A horizontal projection 17 is provided forward of the left support of the two supports 12, 12, and the projection engages with an edge 18 that curves upwardly of the front end of the holding body 7. Forward rotation is prevented.

The screw portion of the screw shaft 11 has the guide plate 1
An operation wheel 19 screwed between the two support portions 12 is mounted. The outer periphery of the operation wheel is knurled.

A coil spring 20 is mounted on the left side wall of the holding holder 5, and one end 21 of the spring is supported by a spring receiver 22 provided on the left side wall of the holding holder.
The front end of the holding member 7 is in contact with a spring locking portion 23 provided on the left side surface of the holding body 7 so as to always rotate the front portion of the hem holding member downward, but is stopped at a fixed position by the stopper.

Since the present invention has the above-described structure, the hem puller is lowered by operating the presser lifting lever, and the guide plate 13 is attached to the cloth W placed on the bed machine frame or the needle plate 24.
Is pressed against the lower end surface of the guide plate.
Since the holes 4 are formed, the hollow holes are compressed by pressing (see FIG. 5), and the vertical state of the guide plate 13 is maintained.

The vertical plate of the guide plate 13 is in contact with the folded edge of the cloth W as shown in FIGS. 1 and 6, and acts to guide the cloth in the cloth feeding direction along the folded edge. Even if is changed, the vertical state can always be maintained by changing the compression amount of the hollow hole, so that the distance from the folded edge to the needle drop position does not change, so that an accurate sewing position can be obtained.
4 shows a state in which the guide body 13 is not bent, and shows a state in which the lower end of the guide body 13 protrudes from the lower surface of the holding body 7 by a dimension A, and FIG. 5 pushes the lower end of the guide body 13 up to the lower surface of the holding body. FIG.

When adjusting the distance from the folded position to the needle dropping position, the support portions 12, 12 of the guide plate 13 are moved in either the left or right direction on the screw shaft 11 by rotating the operation wheel 19. Since the operation wheel 19 and the screw shaft 11 are screw-fitted, fine adjustment is possible.
Further, since the projection 15 at the rear of the guide plate 13 is locked by a stopper 16 located in front of the needle drop portion 9, the length is shortened and formed to be low, so that the periphery of the needle drop portion 9 is an area for the operator. I was able to widen my field of vision without blocking my eyes.

[0014]

According to the present invention, as described above, in a hem pulling press for a sewing machine, a hollow hole is formed in a guide plate having a vertical wall portion by moving horizontally on a screw shaft supported in a horizontal state by a press main body. Even when the cloth thickness changes, the amount of deflection of the guide body is changed to cope with the change, and the vertical state of the guide plate can always be maintained, so that an accurate sewing position can be ensured.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view showing a state in which the present invention is mounted on a sewing machine and a cloth is sewn. FIG. 2 is a state in which a foot presser of the present invention is removed from the sewing machine. FIG. 3 is a plan view of the foot presser of the present invention, FIG. 4 is a side view of the foot presser of the present invention, and FIG. 5 is a side view showing a state where the guide body of the foot presser of the present invention is bent. FIG. 6 is a front view showing the sewing state in which the present invention is mounted on a sewing machine. DESCRIPTION OF SYMBOLS 4 ... Holder bar 5 ... Holder holder 7 ... Holder body 9 ... Needle drop part 10 ... Support part 11 ... Screw shaft 13 ... Guide body 14 ... Center hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A hem pulling presser including a presser body pivotally supported by a presser holder fixed to a presser bar of a sewing machine,
A needle drop portion is provided slightly behind the presser main body, and an upright support portion is provided in front of the needle drop portion, and a screw shaft orthogonal to the cloth feeding direction is provided in the upright support portion, and a shaft is provided on the screw shaft. A hem puller having a thin plate-shaped guide plate mounted so as to be adjustable in the direction, wherein the guide plate is mounted on the screw shaft by a pair of spaced-apart support portions and supports one of the support portions. A bottom hole for the sewing machine, wherein the one support portion, the guide plate, and the hollow hole are provided on the same vertical surface. Presser.