JPH0218877B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bell-equipped needle and a method for manufacturing the same, and more particularly to a pin with a bell provided on the head and a method for manufacturing the same.

(Prior technology) Traditionally, in various types of sewing such as Japanese sewing, dressmaking, and futon manufacturing, pins have been used to fasten the cloth before sewing or to pierce the sewing marks. Afterwards, I sometimes forgot to remove the pin, which was extremely dangerous. In particular, if a pin is left behind during the manufacturing process of futons or the like, it is difficult to find it, and it is necessary to spend time and carefully search for it using a metal detector or the like.

Therefore, in recent years, as a solution to this problem, a pin with a bell 20 as shown in FIG. 6 has been provided. That is, a decorative plate 22 formed by pasting two synthetic resin plates together is provided on the head of the needle 21, a chain 23 is attached to this decorative plate 22, and a bell 20 is attached to the chain 23.
The sound prevents the pin from being left behind.

(Problems to be solved by the invention) However, in the case of this conventional bell needle,
The head of the needle 21 becomes heavy due to the chain 23 with the bell 20 attached, and the bell 20 with the chain 23 swings and the center of gravity moves in various ways, which is a nuisance and gets in the way of work such as stabbing into cloth. It was hot.

Moreover, due to the weight of the bell 20 with the chain 23 or due to the bell 20 being caught, the decorative plate 22 may come off from the head of the needle 21, in which case the needle 21
This did not prevent the needle 21 from being left behind, and in fact, this led to neglecting to check whether the needle 21 had been left behind, which was even more dangerous.

Furthermore, there are many parts attached to the needle 21, such as the decorative plate 22, the chain 23, and the bell 20, which complicates the manufacturing process and increases the manufacturing cost.

Therefore, the present invention was created to eliminate the above-mentioned drawbacks that existed in the past, and provides a bell-equipped needle that has good workability, high safety, and can be manufactured at low cost, and a method for manufacturing the same. The task is to do so.

(Means for Solving the Problems) Therefore, the present invention has a bell integrally fixed to the needle head. By providing a fixing part that is inserted into the mounting tube and pressed together, a ridge is formed by drawing on the surface of the required sheet material, and a vertical A mounting cylinder is formed by drilling a small hole penetrating in the direction, and then an upper hemisphere is formed by drawing using this mounting cylinder as a center. A pair of notches constituting a substantially elliptical shape is provided to form continuous left and right wing pieces in the upper hemisphere, and these left and right wing pieces are drawn downward in the upper hemisphere, and at this stage, the naruko is encapsulated, A metal bell is formed by forming the lower hemisphere so that the gaps between the edges of the left and right wing pieces are evenly spaced, while a protrusion is formed on the circumferential side of the needle head, and the needle head with this protrusion is formed. The above-mentioned problem was solved by inserting the cylindrical part into the cylindrical mounting part of the metal bell, and pressing and fixing the cylindrical mounting part and the needle head together.

(Function) According to the invention as described above, the location of the needle can be confirmed by the sound of the bell, which is integrally fixed to the needle head, without interfering with work.

This bell is manufactured by inserting a needle head with a protrusion on the circumference into the mounting tube formed on the bell.
By pressing and fixing the bell into one piece, the bell is firmly fixed to the needle head and does not easily come off.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Reference numeral 1 shown in the figure is a needle, and a bell 2 is integrally fixed to the head of the needle 1. That is, the head of the needle 1 having the protrusion 4 formed on the circumferential side is inserted into the small hole 7 of the mounting tube 6 provided on the opposite side of the mouth 12 of the bell 2, and the attachment tube 6 and the needle are inserted. 1 and the head are pressed together to form a fixing part 3 as shown in FIGS. 2 and 3, and the needle 1 and bell 2 are integrally molded.

The protrusion 4 of the needle 1 head only needs to protrude toward the needle 1 circumference side, and its shape, size, and number are not particularly limited. It needs to be large enough to be inserted into the small hole 7 of the part 6, and is formed when the needle 1 is molded.

Further, in the illustrated example, a pin is shown, but it goes without saying that it can be formed with various types of pins such as insect pins.

Next, the manufacturing method will be explained as follows.

First, as shown in FIGS. 4 and 5, an upper hemispherical ridge 5 is formed by drawing on the sheet surface of a sheet material A exhibiting a desired band shape. A small hole 7 passing through the ridge 5 in the vertical direction is bored to form a mounting cylinder 6. Next, the upper hemispherical upper hemispherical part 8 is squeezed upward around the mounting cylinder part 6, and a pair of notches 9 facing each other and forming a substantially elliptical shape are provided on the circumference of the upper hemispherical part 8. In this way, left and right wing pieces 10 that are continuous with the upper hemisphere portion 8 are formed. Then, these left and right wing pieces 10 are drawn downward in the upper hemisphere 8, and at this stage, an appropriately shaped clapper 13 is sealed in the inner cavity, and the gaps between the open edges 11 of the left and right wing pieces 10 are equally spaced. A lower hemisphere 1 having a mouth 12 such that
4 is molded and simultaneously separated from the sheet material A to form a substantially spherical bell 2 that is integral as a whole.

On the other hand, a protrusion 4 is formed on the circumferential side of the needle 1 head, and the needle 1 head on which the protrusion 4 is formed is inserted into the mounting cylinder part 6 of the bell 2, and the needle 1 head is inserted into the mounting cylinder part 6 and the needle 1. The head and head are pressed together to form a fixing part 3 as shown in FIG. 3, and the needle 1 and bell 2 are integrally formed.

Although not shown, the bell 2 is manufactured using a plate-shaped plate material A instead of a band-shaped plate material A.
By paralleling each process and performing them simultaneously, production efficiency can be further improved.

(Effects of the Invention) Therefore, in the present invention, since the bell 2 is integrally fixed to the head of the needle 1, there is no need for the trouble of the bell 20 with the chain 23 swinging unstablely as in the conventional case, and the workability is extremely high. In good condition. Moreover, it has a good appearance and does not spoil its appearance when used for basting or the like. Further, it has advantages such as a small number of parts and low manufacturing cost.

Furthermore, the head of the needle 1 having the protrusion 4 formed on its circumferential side is inserted into the mounting cylinder 6 formed on the bell 2,
Since the fixing part 3 formed by pressing these together is provided, the bell 2 is not easily removed from the head of the needle 1 and is firmly fixed. Therefore, there is no danger that bell 2 will come off and separate from needle 1 during work, making it impossible to confirm the presence of needle 1 by the sound of bell 2, and the presence of needle 1 can always be confirmed by the sound of bell 2. It is extremely safe.

Moreover, since it can be easily fixed by simply pressing and the fixing part 3 is completely sealed, a clear resonance sound can be obtained from the bell 2 provided at the head of the needle 1.

In addition, since the manufacturing method described above is used, the bell 2 can be integrally molded directly from the sheet material A without any seams, and in the manufacturing process, the ridge 5 formed by drawing on the sheet surface of the sheet material A. A small hole 7 extending vertically can be easily drilled, and the mounting cylinder portion 6 can be formed. Moreover, since the bell 2 and the needle 1 can be manufactured integrally in a continuous manufacturing process in this way, they can be mass-produced and provided at extremely low cost.

Therefore, the bell 2 is integrally molded as a whole, and the mounting cylinder part 6 and the head of the needle 1 are pressed to be completely sealed except for the mouth part 12, so that the bell provided on the head of the needle 1 is completely sealed. From 2, a clearer resonance sound can be obtained.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is an enlarged vertical sectional view of main parts, FIG. 3 is an enlarged sectional view taken along the arrow line in FIG. 1, and FIG. figure,
FIG. 5 is an explanatory diagram showing the manufacturing process of the bell, in which FIG. 4 is a plan view, FIG. 5 is a sectional view, and FIG. 6 is a front view of a conventional example. DESCRIPTION OF SYMBOLS 1... Needle, 2... Bell, 3... Fixing part, 4... Protruding part, 5... Ridge part, 6... Mounting cylinder part, 7... Small hole, 8... Upper hemisphere part, 9... ...notch, 10 ... wing piece, 11 ... edge, 12 ... mouth, 13 ... clapper, 14 ... lower hemisphere, 20 ... bell, 21 ...
Needle, 22...plate, 23...chain, A...plate material.

Claims (1)

[Claims] 1. A needle with a bell, characterized in that a bell is integrally fixed to the needle head. 2. The bell-equipped needle according to claim 1, further comprising a fixing part formed by inserting the needle head having a protruding part on the circumferential side into a mounting cylinder part formed on the bell and pressing them together. 3 Form a ridge on the sheet surface of the required sheet material by drawing, drill a small hole that passes through the ridge in the vertical direction to form a mounting cylinder, and then draw around this mounting cylinder. The upper hemisphere is formed by processing, and then a pair of substantially elliptical notches are formed facing each other on the circumference of the upper hemisphere to form left and right wing pieces that are continuous with the upper hemisphere. The left and right wing pieces are drawn downward in the upper hemisphere, and at this stage the clapper is encapsulated, and the lower hemisphere is formed so that the gaps between the edges of the left and right wing pieces are evenly spaced to form a metal bell. On the other hand, a protrusion is formed on the circumferential side of the needle head, the needle head with the protrusion formed thereon is inserted into the mounting cylinder of the metal bell, and the mounting cylinder and the needle head are pressed together. A method for manufacturing a bell-shaped needle, which is characterized by fixing the needle with a bell.