KR950007640Y1 - A sewing machine - Google Patents

Abstract

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Description

Portable sewing machine

1 is a perspective view showing a conventional sewing machine.

Figure 2 is an overall coupling cross-sectional view showing the internal configuration of a portable sewing machine according to the present invention.

Figure 3 is an exploded perspective view of the main part of the present invention.

4 and 5 is a side view showing an operating state of the portable sewing machine according to the present invention.

6 is a perspective view showing a thread knot state of a portable sewing machine according to the present invention.

* Explanation of symbols for main parts of the drawings

14: drive motor 16: reducer

18: crankshaft 24: lifting member

30: lifting shaft 32: needle

40: sewing means 42: cam member

42a: first cam 42b: second cam

44: rotating member 44a: locking jaw

50: transfer member A: bar

Y: thread

The present invention relates to a portable sewing machine, and more particularly, to a portable sewing machine that is easy to use and carry by enabling sewing such as wrapping paper or a tent such as grain or cement without a bobbin thread.

Conventional sewing machines are coupled to the lower side of the table (1) installed horizontally as shown in Figure 1, a plurality of legs (2), the sewing on the table (1) in accordance with the operation of the drive motor (3). If the ed 4 to be fixed is installed, the control unit 6 is provided below the drive motor 3 to control the speed and the like of the drive motor 3 according to the operation of the pedal 5.

However, such a conventional sewing machine is mainly used for sewing clothes, etc., there is a problem that it can not be applied to the sewing of the packaging paper such as grain or cement, or the tent of large size, accordingly, the packaging paper such as cement for industrial use Although sewing machines for sewing machines have been proposed, this device is also complicated and large, making it impossible to carry and transport. Not only is it very inconvenient, but there are various problems such as the loss of grain during transportation.

The present invention is made in order to solve the problems of the prior art as described above, the object of the present invention is to simplify the structure and to carry and transport, it is very easy to sew a wrapping paper such as grain without sewing a portable sewing machine To provide.

Portable sewing machine according to the present invention in order to achieve the above object is a drive motor and a reducer for reducing the rotational force of the drive motor, the crank shaft is coupled to the reducer is rotated in accordance with the rotation operation of the crank shaft and fixed to one side It consists of a lifting member equipped with a needle at the tip of the lifting shaft, and sewing means for sewing by rotating according to the operation of the crankshaft. The structure is simplified and is convenient to carry and carry. It is characterized by being done.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to FIGS. 2 to 6.

Figure 2 is a cross-sectional view showing the entire sewing machine according to the present invention, Figure 3 is an exploded perspective view showing the main part of the present invention, Figure 4 is a side view showing the main part of the present invention, reference numeral 10 is the case body Indicates.

A support frame 12 is fixedly installed at one side in the case body 10, and a speed reducer 16 for reducing the rotational force of the driving motor 14 is coupled to one side of the support frame 12.

The reducer 16 is coupled to the intermediate gear 16a engaged with the drive gear 14a of the drive motor 14 to engage the driven gear 16b to reduce the rotational speed of the drive motor 16. The crankshaft 18 which has the crank part 18a at one side is couple | bonded with 16b.

The crankshaft 18 is rotatably supported by the bearings 20a and 20b through the support frame 12, and the crank portion 18a linearly rotates the crankshaft 18 in a linear motion. One end of the connecting rod 22 is replaced with a second end, and the other end is hinged to the elevating member 24 provided above.

The guide pin 26 fixed to one side of the elevating member 24 is slidably inserted into the guide block 28 formed on the support frame 12, and is provided at the tip of the elevating shaft 30 fixed to the other side thereof. The needle 32 is fixed.

On the other hand, the sewing means 40 is coupled to the front end of the crank shaft 18 to rotate in accordance with the operation of the drive motor (14).

As shown in FIGS. 3 and 4, the sewing means 40 includes a cam member having first and second cams 42a and 42b of different sizes and shapes at the tip of the crankshaft 18, respectively. (42) is fixed and coupled, the inner side of the front end of the crankshaft 18, the rotating member 44 having a locking jaw (44a) is fixed to one side, the cam member 42 and the rotating member 44 In the outer side of the support frame 12 is a transport member 50 for moving the left and right and up and down directions in accordance with the operation of the cam member 42 to transfer the bar (A) made of packaging paper such as grains in one direction The slide pin is inserted into the fixing pin 46 protruding from one side.

The transfer member 50 has a plurality of projecting teeth 52 for projecting the bar (A) to the upper side protruding, a pair of vertical portion (54a) that the first cam (42a) is in contact with the lower side And a pair of horizontal portions 54b in contact with the second cam 42b, and elastic means 56 having the other end fixed to the support frame 12 at one side of the vertical portion 54a. One end of is fixedly installed.

In addition, the transfer member 50 slides in the left and right or up and down directions by the operation of the cam member 42 as the cutting groove 58 formed at one side is inserted into the fixing pin 46.

On the other hand, the one side of the support frame 12 is fastened to the fixing plate 60, the sewing material A is placed on the upper side, the presser foot 62 is hinged on the fixing plate 60, the support frame ( One side of the 120 and the elevating member 24 is coupled with a thread guide (64) for guiding the seal (Y).

And one side of the drive motor 14 is coupled to the cooling fan 66 for cooling the drive motor 14 by sucking the outside air into the suction hole (10a) formed in the case body 10 in accordance with the rotation.

In the drawing, reference numeral 68 denotes a hinge pin that couples the connecting rod 22.

Next will be described in detail the operation and effect of the portable sewing machine according to the present invention configured as described above.

First, after the thread (Y) is threaded to the needle (32) through the thread guide (64) on the fixing plate 60 to place the sewing material (A) to be sewn, such as grain packaging, switch not shown When is turned on, the drive motor 14 is driven.

Then, the rotational force of the drive motor 14 is transmitted to the reducer 16 composed of the middle and middle gears 16a and 16b through the drive gear 14a to rotate the crankshaft 18 at a sufficiently reduced speed. Let's go.

Therefore, the connecting rod 22 coupled to the crank part 18a is moved up and down according to the rotation operation of the crankshaft 18, and the lifted up hingedly coupled by the lifting operation of the connecting rod 22 is performed. As for the member 24, the needle 32 fixed to the tip of the lifting shaft 30 is lifted and lifted.

That is, as the needle 32 descends, as the rotary member 44 fixed to the front end of the crankshaft 18 rotates, as shown in FIG. 5, the thread Y is caught on the locking jaw 44a. It creates a ring phenomenon, the cam member 42 consisting of the first and second cams 42a, 42b is rotated in accordance with the continuous operation of the crank shaft 18 to move the conveying member 50 to the left and right and up and down As a result, the sewing material A is advanced.

Then, the ring of the thread (Y) formed in the locking jaw (44a) is released from the rotating member 44 during the next rotation, the thread (Y) of the needle 32 is lowered again the locking of the rotating member 44 A hook is formed at the same time as the jaw 44a is caught, and the outer side of the hook is repeatedly hooked away from the hooking jaw 44a to be hooked to form a thread as shown in FIG. Y) is entangled and sewing is performed.

At this time, the transfer means 50 is moved to the left and right sides when the first cam (42a) is in contact with the vertical portion (54a) formed on both sides in accordance with the rotation operation of the crank shaft 18, the second cam (42a) When contacted with the horizontal portion (45b) formed on the upper and lower sides is transferred in the vertical direction to move the bar (A) forward.

In addition, as the cooling fan 66 is formed at one side of the driving motor 14, external air is sucked into the suction hole 10a during operation and supplied to the periphery of the driving motor 14. It can prevent overheating.

As described above, the portable sewing machine according to the present invention has a simple structure and can be miniaturized. Accordingly, the portable sewing machine can be conveniently carried and transported, and the sewing machine can be sewed without a bobbin thread. This has various effects such as making mass production more suitable.

Claims (4)

A drive motor 14, a reducer 16 for reducing the rotational force of the drive motor 14, a crank shaft 18 coupled to the reducer 16 to rotate, and a rotation operation of the crank shaft 18 Lifting member 24, which is mounted in accordance with the operation of the crank shaft 18, the elevating member 24 mounted on the tip of the elevating shaft 30 fixed to one side and is fixed in accordance with the operation of the crank shaft 18 Portable sewing machine, characterized in that consisting of. According to claim 1, The sewing means 40 is a cam member 42 coupled to the front end of the crankshaft 18, the left and right and up and down in accordance with the operation of the cam member 42 is interlocked with the sewing material (A) Portable sewing machine, characterized in that consisting of a conveying member (50) for conveying and a rotating member (44) rotated integrally with the crank shaft (18) to sew. The portable sewing machine according to claim 2, wherein the cam member (42) comprises a first cam (42a) for moving the conveying member (50) left and right and a second cam (42b) for moving up and down. The portable sewing machine according to claim 2, wherein the rotating member (44) is formed with a locking jaw (44a) which is detached at the same time as the thread (Y) is engaged with rotation.