JPH0338213Y2 - - Google Patents

Description

[Detailed explanation of the idea] Technical field The present invention relates to a bobbin for a sewing machine.

Prior Art When sewing a suit using a conventional sewing machine bobbin, for example, 10 suits can be sewn continuously on one bobbin.
Moreover, the thread is wound to such an extent that a small amount remains even after sewing. Therefore, after finishing sewing 10 suits, when starting the next sewing job, it is necessary to remove this remaining thread from the bobbin, and to remove it, the remaining thread must be rewound from the bobbin one by one. Nakatsuta.
However, rewinding in this manner is time consuming and extremely troublesome, and furthermore, the sewing operation has to be interrupted each time, resulting in a decrease in efficiency.

Purpose The purpose of this invention is to easily remove the remaining thread on the bobbin, save the trouble of unwinding the remaining thread, and increase the efficiency during sewing work by simply attaching the female bobbin member to the female bobbin member. To provide a bobbin which can be detached by operation and whose locking pin does not catch on remaining yarn when detached.

Configuration In order to achieve the above object, the present invention includes a female bobbin member 1 consisting of a cylindrical bobbin section 2 and a flange 3 at the outer end thereof, a mounting tube 8 inserted and fixed into the bobbin section 2, and a mounting tube 8 that is inserted and fixed into the bobbin section 2. In a bobbin in which a pair of bobbin members 1 and 7 consisting of a male bobbin member 7 constituted by a flange 9 at the outer end are removably assembled to each other, a locking member is provided on the mounting tube 8 of the male bobbin member 7. Spring 10 with pin 11 provided inside mounting tube 8
The inner wall of the bobbin section 2 of the female bobbin member 1 has an insertion groove 5 extending in the axial direction of the bobbin section 2 and a hook extending from the inner end of the insertion groove 5 in the circumferential direction of the bobbin section 2. The locking groove 6 is formed with a mounting recessed groove 4 into which the locking pin 11 can be inserted.

Embodiment An embodiment embodying the present invention will be described below with reference to the drawings of FIGS. 2 and a flange 3 formed integrally with the outer end thereof. Reference numeral 4 denotes a mounting groove formed on the inner wall of the bobbin section 2 of the female bobbin member 1, which includes an insertion groove 5 extending in the axial direction of the bobbin section 2 and a groove extending from the inner end of the insertion groove 5 in the circumferential direction of the bobbin section 2. A locking groove 6 that extends briefly to
It is made up of.

Reference numeral 7 denotes a female bobbin member that is paired with the female bobbin member 1, and includes a mounting tube 8 that can be inserted into the thread winding section 2 of the female bobbin member 1, and an attachment tube 8 that is integrally connected to the outer end of the attachment tube 8. It is constituted by the formed flange 9. Reference numeral 10 denotes a spring installed inside the mounting tube 8, which always has a spring property in the direction of tightly contacting the inner circumferential surface of the attachment tube 8. Note that this spring 10 has a ring shape with a portion cut out. 11 is a locking pin protruding from the upper outer periphery of the spring 10,
The mounting tube 8 is inserted through the hole 12 transparently provided in the attachment tube 8.
protruding upwards.

The locking pin 11 is attached to the mounting groove 4 on the bobbin winding portion 2.
In the state shown in FIG. 1, the end of the locking pin 11 is pressed against the inner wall of the locking groove 6 by the biasing force of the spring 10, and the mounting tube 8 and the bobbin winding part 2 are clamped together to ensure stability.

Now, the bobbin configured as described above can be used in the same manner as a conventional bobbin.

After sewing with this bobbin, to remove the remaining thread on the bobbin, use both bobbin members 1,
7 apart from each other. To separate the bobbin members 1 and 7, first rotate the locking pin 11 of the male bobbin member 7 into the locking groove of the female bobbin member 1 by rotating one of the flanges 3 and 9. 6 and then pull both bobbin members 1 and 7 away from each other, so that the locking pin 11 is pulled out along the insertion groove 5 of the mounting groove 4 toward its distal end. Then, the attachment tube 8 comes out of the thread winding section 2, the inner end of the thread winding section 2 is opened, and the remaining yarn on the thread winding section 2 can be easily pulled out from the open end.

To assemble both bobbin members 1 and 7 after removing the remaining thread as described above, first, hold the tip of the locking pin 11 of the male bobbin member 7 with your finger and attach the female bobbin member 1. The mounting tube 8 of the male bobbin member 7 is inserted straight into the bobbin section 2 of the female bobbin member 1 in a state that it corresponds to the outer end of the groove 4. Then, when the locking pin 11 comes into contact with the inner end of the mounting groove 4, both bobbin members 1 and 7 are rotated slightly relative to each other to engage the locking pin 11 into the locking groove 6.

Note that a plurality of locking pins 11 and mounting grooves 4 in the above embodiment may be provided.

Note that the material of the bobbin member is not limited to metal, and may be synthetic resin.

Effects As detailed above, the present invention eliminates the trouble of easily removing the remaining thread on the bobbin and unwinding the remaining thread, and improves the efficiency of sewing work. This is a practically preferable idea for a bobbin because it can be detached by a one-touch operation on the member and has the effect that the locking pin does not get caught on the remaining yarn when the member is detached.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a bobbin according to an embodiment of the present invention, Fig. 2 is an exploded plan view of the bobbin, Fig. 3 is a front sectional view, and Fig. 4 is a side sectional view. FIG. 5 is a perspective view of the female bobbin member. Female bobbin member 1, bobbin section 2, flange 3,
9.

Claims (1)

[Claims for Utility Model Registration] A female bobbin member 1 consisting of a cylindrical bobbin portion 2 and a flange 3 at its outer end, a mounting tube 8 inserted and fixed into the bobbin portion 2, and a flange 3 at its outer end. In a bobbin in which a pair of bobbin members 1 and 7 consisting of a female bobbin member 7 constituted by a flange 9 are removably assembled to each other, a locking pin 1 is provided on the mounting tube 8 of the female bobbin member 7.
1 is protruded through a spring 10 provided in the mounting tube 8, and the inner wall of the bobbin section 2 of the female side bobbin member 1 has an insertion groove 5 extending in the axial direction of the bobbin section 2 and an inner end of the insertion groove 5. A bobbin characterized in that a locking groove 6 extends from the bobbin winding portion 2 in a short circumferential direction, and a mounting groove 4 into which the locking pin 11 can be inserted is formed.