JPH019812Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention makes it possible to omit the socket or ring body that fits into the lower inner surface of the bobbin body, thereby reducing the weight and cost of the bobbin. This invention relates to a thread winding bobbin that can smoothly transmit the rotation of a spindle to the bobbin.

[Prior art]

Conventionally, in order to transmit spindle rotation of a winder to a bobbin for thread winding, a socket or a ring body into which a spindle rotation drive unit is fitted is fitted into the lower inner surface of the bobbin body. Since this bobbin is fitted with a socket or ring body, an increase in weight is unavoidable, and since the socket or ring body is a molded product made of synthetic resin or metal, it is difficult to mold it. There is a problem in that an expensive mold is required, which increases costs.

In addition, as an improvement on this, as shown in FIG.
A bobbin has been proposed in which a notch 15 is provided in the fitting hole 11 and a locking tool 14 that engages with the drive engagement surface of the spindle rotation drive unit is attached to the notch 15 (Utility Model Publication No. 54-28497). However, in this bobbin, the diameter of the fitting hole 11 at the lower end of the bobbin body expands due to the rotational stress and centrifugal force of the spindle, and the width of the notch 15 becomes wider, making it easy for the locking tool 14 to come off during rotation. There is a risk that the locking tool 14 may fly off, wind pressure due to rotation and centrifugal force may cause delamination at the notch 15, and this may spread and cause the surface paper to turn over. From locking tool 1
4 may come off, the rotation transmission function is likely to be lost due to these, and the relative positional relationship with the spindle rotation drive section has been taken into consideration.
4 and the notch 15 must be manufactured to fairly accurate dimensions, which poses problems such as increased costs.

[Purpose of invention]

In view of the above-mentioned conventional problems, an object of the present invention is to omit the socket or ring body that fits into the lower inner surface of the bobbin body, to reduce the weight and cost of the bobbin, and to reduce the weight and cost of the bobbin. An object of the present invention is to provide a bobbin for winding a thread that can smoothly transmit the rotation of the bobbin to the bobbin.

[Structure of the idea]

The bobbin for thread winding of the present invention that achieves the above purpose is:
At least three approximately U-shaped linear metal members are fixed to the lower part of the bobbin body located in the spindle rotation drive section by driving the protruding portions thereof through the bobbin body, and the inner surface of the bobbin body of each metal member is fixed. The present invention is characterized in that a rotation transmission portion is formed in which the component portion serves as an engagement portion with the spindle rotation drive portion.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially longitudinal side view showing a first embodiment of the bobbin for thread winding according to the present invention, and FIG.
It is a sectional view taken along arrow A.

1 and 2, a rotation transmission part 2 and a spindle contact part 3 are provided on the inner surface of the lower part of the bobbin body 1, and a spindle contact part 3 is provided on the inner surface and upper part of the middle part of the bobbin body 1. A bearing 5 into which the shaft portion 4 is fitted and a cap 6 necessary for fixing the denier marking etc. are fitted respectively. Note that 7 is a spindle rotation drive section.

Therefore, in this embodiment, three approximately U-shaped linear metal members 8 are driven into the lower part of the bobbin body 1 corresponding to the spindle rotation drive unit 7 from the outer surface of the bobbin body 1, and penetrate the inner surface. The metal members 8 are fixed by bending their ends, and the rotation conducting portion 2 is formed by the bent portions of each metal member 8 .

As the metal member 8, staples for cases, stationery, building materials, etc. can be used,
Its thickness and dimensions can be appropriately selected depending on the material, wall thickness, etc. of the bobbin body 1. Therefore, depending on the driving conditions, the metal member 8
As shown in FIG. 2, the bent portion can be formed into a curved shape, and the tip thereof can be shaped so as to bite into the inner surface, so that the metal member 8 can be firmly fixed to the bobbin body 1. In addition, the curved portion becomes an engaging portion with the spindle rotation drive unit 7, and the rotation of the spindle is smoothly transmitted to the bobbin.

FIG. 3 shows a second embodiment of the bobbin for thread winding according to the present invention, and the difference from the first embodiment is that the metal member 8 is driven from the inner surface of the bobbin body 1, and the through-end of the outer surface is This is a point fixed by bending the part. In this example, the first
As in the case of the embodiment, the metal member 8 can be firmly fixed to the bobbin body, and the relatively long straight portion of the metal member 8 on the inner surface of the bobbin body serves as the spindle rotation drive unit. 7, the rotation of the spindle can be smoothly transmitted to the bobbin by eliminating vibration due to play in the engaging portion.

When driving the metal member 8 from the inner surface of the bobbin body 1, a relatively hard block body of an appropriate shape is interposed between the metal member 8 and the inner surface of the bobbin body, and the block body is inserted into the inner surface of the bobbin body. By fixing them at the same time, it is also possible to adjust the area and height of the engaging portion.

Furthermore, when driving the metal member 8 from the outer surface of the bobbin body 1, as shown in FIG. Can be done. In this case, the shape and size of the tongue-shaped member 9,
The thickness, material, etc. can be appropriately selected depending on the type and thickness of the thread Y, winding conditions, etc.

Note that the present invention can be effectively applied to paper bobbins.

[Effect of idea]

As described above, the bobbin for thread winding of the present invention has at least three substantially U-shaped wire metal members driven into the lower part of the bobbin body located in the spindle rotation drive part so that the protruding portions thereof penetrate the bobbin body. At the same time, the inner surface of the bobbin body of each metal member is configured to form a rotation conduction portion that serves as an engagement portion with the spindle rotation drive portion. The ring body can be omitted, making it possible to reduce the weight and cost of the bobbin, and the engagement of the inner surface of the bobbin body of each metal member with the spindle rotation drive section allows the spindle to rotate smoothly. You can tell the bobbin. Moreover, in the present invention, each metal member is fixed to the bobbin body by driving the protruding portion through the bobbin body, so that the fixation can be made strong, and the rotational stress of the spindle can be reduced. There is no risk that the metal member will come off the bobbin body due to centrifugal force or during transportation or handling, resulting in excellent safety and maintaining a good rotation transmission function. In addition, since each metal member is fixed to the bobbin body by driving the protruding portion through the bobbin body, a tongue-like shape is formed on the outer surface of the bobbin body during driving. There are effects such as being able to simultaneously fasten the members to form a thread stopper, or to simultaneously fasten appropriately shaped blocks to the inner surface of the bobbin body to adjust the engagement part.

[Brief explanation of the drawing]

FIG. 1 is a partially longitudinal side view showing a first embodiment of the bobbin for thread winding according to the present invention, and FIG.
3 shows a second embodiment of the bobbin for thread winding according to the present invention, and FIG. 4 shows a sectional view of the same part as in FIG. 2, and FIG. FIG. 5 is a perspective view of a conventional bobbin for thread winding. 1...Bobbin body, 2...Rotation transmission part, 7...
Spindle rotation drive unit, 8... Linear metal member.

Claims (1)

[Scope of utility model registration request] At least three approximately U-shaped linear metal members are fixed to the lower part of the bobbin body located in the spindle rotation drive section by driving the protruding portions thereof through the bobbin body, and the inner surface of the bobbin body of each metal member is fixed. A bobbin for winding a thread, in which a rotation transmission part is formed in which the component part serves as an engagement part with a spindle rotation drive part.