JPH0329732A - Head rotating type fastening piece - Google Patents

Abstract

PURPOSE:To prevent a driving error from generating by a method wherein a cross sectional shape of a base part of a filament, which is connected to a lateral rod part, is formed into a flat shape in the extending direction of the lateral rod. CONSTITUTION:A fastening piece (p) is constituted of a head part 10, a lateral rod 30 and a filament 20 which connects these two parts, and the fastening piece (p) is erected on a connecting rod 50 through a connecting piece 40, which is extended in the extending direction of the filament 20, to constitute a fastening piece aggregate P. This fastening piece aggregate P is integrally formed of a molecular orientation type synthetic resin such as nylon or polypropylene, etc., and a connecting part 20a of the filament 20 is formed into a flat shape to be wider in the direction of the lateral rod 30. For the base part of he filament 20, a central part 20b is formed into an oval shape, and padding parts 20c are added to both sides of the central part 20b. The width of this padding part 20c is largest at the base part and is contracted toward the head part 10 in the order of (a), (b), (c), and at a spot of (d), the shape is formed the same as the central part 20b. By this method, the head part of the fastening piece lies along the side surface of an fastening device, and therefore, the fastening piece does not fit in slits, which are opened on the side surface of the fastening device and the side surface of a hollow needle, and is smoothly carried out and efficiently driven.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a locking piece used for attaching labels to products such as clothing, or for bundling together multiple products such as towels, socks, or athletic shoes. Regarding.

[Conventional technology]

As shown in FIG. 11, the locking piece p has a head 1, a filament part 2 with one end connected perpendicularly to the center of the head 1, and a center part connected to the other end of the filament 2. A plurality of locking pieces p are arranged from the horizontal bar part 3 connected orthogonally to each other, and a plurality of locking pieces p are located at the center of the horizontal bar part 3 and are attached to the filament part 2.
The locking piece assembly P is installed on the connecting rod 5 via the connecting part 4 arranged on the extension line of the locking piece P. This locking piece assembly P is integrally formed of a molecularly oriented synthetic resin such as nylon or polypropylene. When attaching this locking piece P to a product such as clothing, the 8th
As shown in the figure, using the attachment device 7 having the hollow needle 6 at the tip, insert the locking piece assembly P into the guide groove 8, and
As shown in the figure, with the label L inserted into the hollow needle 6, stick it from the front side of the product F toward the back side, and grasp and operate the lever 9a provided in the front of the handle part 9 of the attachment device 7 so as to be expandable. By doing so, the horizontal bar portion 3 is removed from the tip of the hollow needle 6.
By protruding with a piston 12, the horizontal bar portion 3 is positioned on the back side of the product F, and the label L is attached to the front side F. In this operation of attaching the label L, the horizontal bar portion 3 of the locking piece p is reliably projected to the back surface of the product F,
The label L must be securely attached to the product F via this locking piece p. For this purpose, the horizontal bar 3
The filament part 2, which has one end fixed to the filament part 2, is stretched after being shaped so that its cross section is reduced and at the same time the molecules are oriented to increase the strength and stiffness of the filament part 2. This extended portion must always be formed in a portion close to the horizontal bar portion 3.

That is, when driving this locking piece p into the product F, as shown in FIG. 2a, the filament part 2 and the horizontal bar part 3 are parallel to each other, and when the horizontal bar part 3 protrudes from the tip of the hollow needle 6, the horizontal bar part 3
must be restored so that it is perpendicular to the filament portion 2.

The conventional locking piece p is difficult to form due to the workability of the mold used for its formation.
In consideration of the shapeability and the drawing process of the filament part 2, the cross section of the filament part 2 is formed into a circular shape. The material of the locking piece p is tapered so as to gradually expand in the longitudinal direction of the filament part 2 from the vicinity of the horizontal bar part 3 toward the head 1 side. This taper is designed so that the elongation of the filament part 2 starts from the connecting part 2a and progresses toward the head part 1.

Further, as shown in FIG. 10, a large number of locking pieces p are attached to the connecting rod 5.
The locking piece assembly P is formed by processing the above locking pieces P, but when driving the locking pieces P, the head 1 is in the assembled state, so that one piece driven in does not change the posture of the head 1. Move in parallel in the state. This is because the cross section of the filament part 2 is circular as described above, so when one locking piece p is driven into the product F as shown in FIG. is pulled by the horizontal bar 3 moving forward in the hollow needle 6 and bent so as to pass through the product F, and then the horizontal bar 3 returns to its original position perpendicular to the filament 2. To explain further, when the locking piece assembly P is loaded into the guide hole 8 of the attachment device 7 as shown in FIG. 5 or in parallel to the upper surface of the mounting device 7 (see FIG. 8). When driving the locking piece p, the head 1 moves forward while maintaining a horizontal state as shown by the chain line in FIG. [Problems to be Solved by the Invention] In the conventional locking piece p, the thickness of the head 1 is approximately 2 mm, and the thickness between the head l is The locking piece assembly P is arranged so as to have a gap l of about 2 mm (see FIG. 10).

However, recently, the purpose of reducing the number of times the locking piece assembly P is often loaded into the mounting device 7, the purpose of avoiding entanglement of the heads of the locking piece assembly P during transportation and handling, and the purpose of For the purpose of making the aggregate P more compact as a whole, there is a tendency to reduce the thickness of the head 1 and to reduce the spacing. It has been proposed that the most precisely shaped locking piece assembly P is one in which the heads 1 are in contact with each other with substantially no space between them.

As mentioned above, by reducing the distance l between the heads 1 or making it zero, the locking piece assembly P has become quite compact and has excellent handling properties.

Furthermore, in order to make the locking piece p less noticeable with respect to the label L and to reduce the amount of material used, the thickness t of the head l should be set to 2ξ or less, preferably 1.5 to {
I've started to cut it down to 1,000 yen or less.

By the way, as shown in FIG. 8, a slit 15 is opened in the longitudinal direction on the side surface of the hollow needle 6 in order to guide the connecting portion 2a <20a) of the filament portion 2 (20), and a slit 15 is also formed on the side surface of the attachment device 7. A slit 16 is formed as an extension of the slit 15. The slits 15 and 16 are large enough to allow the connection between the filament part 2 (20) and the horizontal bar part 3 (30) to pass through smoothly, but if the head part 1 (10) becomes thin as described above, It is slightly larger than the thickness.

On the other hand, the length of the filament part 2 of the locking piece P used for ordinary purposes such as attaching price tags is about 35 to 10 mm, and the locking piece P has a thin head 1 (10). head 1
Even if (10) passes through the side surface of the mounting device 7 during driving, it is unlikely that it will be inserted into the slits 16 and 15 because it passes through a fairly distant position.

However, a locking piece p with a short filament part 2 (20) of about 5ξ to 15 mm is used to bind multiple items such as gloves, socks, and handkerchiefs, or to close pocket lids when washing jeans. It has been done. In this way, filament part 2
(20) is short, when driving, the edge 1a of the head I is attached to the mounting W as shown by the chain lines in FIGS. 9 and 1l.
It will move while touching the side of 7.

In the above state, the thickness of the head l is the same as that of the slits 15 and l6.
If the edge 1a is thinner than the slits 16, 15
There is a drawback that the filament part 2 is inserted into the inside of the filament and becomes wedged, making it difficult to move even if the horizontal bar part 2 is pressed with the piston 12, and eventually the filament part 2 is cut.

Further, even if the filament part 2 is not cut in this way, the head 1 cannot be removed from the slit openings 6 and 15, and in order to remove it, it is necessary to interrupt the work of driving the locking piece p. The work is extremely complicated when handling large quantities of products. The present invention was obtained in order to solve the problems of the conventional locking piece, and its purpose is to reduce the thickness of the head part by opening the side part of the main body of the mounting device. An object of the present invention is to provide a locking piece that can prevent the occurrence of a driving error even when the locking piece is thin due to a slit formed in the hollow needle or a slit opened on the side surface of a hollow needle, and also when the locking piece has a short filament part. [Means for Solving the Problems] A locking piece according to the present invention for achieving the above-mentioned object includes a head, a horizontal bar portion arranged in parallel with the head at a distance, and A plurality of locking pieces each consisting of a filament part connecting orthogonally between the central part of the horizontal bar part and the central part of the horizontal bar part are mounted on the connecting rod via a connecting part protruding from the horizontal bar part in the extending direction of the filament part. In the erected locking piece assembly, at least the cross-sectional shape of the base of the filament portion with the horizontal bar is flat in the extending direction of the horizontal bar.

[For production]

At least the connecting portion of the filament portion of the locking piece according to the present invention with the horizontal bar portion is formed so that the section modulus when bent in a direction parallel to the horizontal bar portion is large and small in other directions. ing. Specifically, at least the connecting portion of the filament portion is made flat so that the width in the direction parallel to the horizontal bar portion is increased, and the width in the direction perpendicular to or intersecting the horizontal bar portion is decreased.

Therefore, it has the characteristic that it is easy to bend on the narrow side where the section modulus is small, and difficult to bend on the wide side where the section modulus is large. Therefore, the horizontal bar part is driven into the product, and the connecting part of the filament part is bent by being dragged by the horizontal bar part, but because there is a difference in resistance in this bending direction, it will be twisted in the direction that is easier to bend. become.

Since the filament portion is twisted in a direction in which the head is parallel to the attachment device, there is no possibility that the edge of the head will be inserted into the slit.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a locking piece according to the present invention, and FIG. 2 is a side view of the same.

The locking piece P is composed of a head 10, a horizontal bar 30, and a filament part 20 connecting these parts.
The connecting rod 50 is connected via the connecting piece 40 extending in the direction of extension of the connecting rod 50.
It is planted on top to form a locking piece assembly P. In addition,
Since the head 10 is formed quite thin, a horizontal bar-shaped protrusion with a circular cross section is formed on the lower edge, but this protrusion is made up of a spacer and a reinforcing material that prevent the head IOs from coming into contact with each other, and a protruding pin. Also serves as a guide hole.

This locking piece assembly P has various numbers depending on the purpose, but usually it is about 35 to 100 pieces, and the largest number of locking pieces P assembled is about 200 pieces. This pair of locking pieces P is integrally molded from a polymer or resin with molecular orientation such as nylon or polypropylene.

By the way, the filament portion 20 of the locking piece P according to the present invention
At least the connecting portion 20a is different from the conventional one having a circular cross section, and is formed flat with a wider width in the direction of the horizontal bar portion 30. FIG. 3 is an enlarged front view of the connecting portion 20a of the filament portion 20, and a-a-t-b-b-b+c-c.
Cross-sectional views on the +d-d line are (a)...(d)
are shown respectively.

(a) As shown in the figure, the width W of the root portion of the filament portion 20 is formed to be considerably wider than the thickness N. This root part has an oval central part 20b, and thickened parts 20 on both sides thereof.
It is formed in a shape with the addition of c. The width of the thickened portion 20c is also the largest at the base, followed by (a) and (b).
) and (C) are reduced toward the head 10 side, and the portion (d) is formed in the same shape as the central portion 20b. The cross-sectional shape of this filament portion 20 is the central portion 20.
The shape can be improved by making the cross section of b into an ellipse and adding thickened portions 20c on both sides thereof.

4 to 6 show other embodiments,
Fig. 4 shows a locking piece P in which the connecting part 20a is shaped like an ellipse and the flatness of this ellipse is gradually reduced, and Figure 5 shows a locking piece P in which the connecting part 20a is formed into an oval shape. 6 shows the connecting portion 20a with both ends enlarged and the central portion reduced. All of these are formed to provide a difference in resistance to bending in the width direction and bending in the thickness direction, that is, a difference in section modulus. Next, the state in which the filament portion of the locking piece according to the present invention is deformed will be explained.

FIGS. 7(a) and 7(b) are explanatory diagrams drawn to make it easy to understand the behavior of the locking piece according to the present invention, in which the filament part 20 is planted perpendicularly to the center part of the horizontal bar part 30. The filament portion 20 is formed to have a wide width on the side parallel to the horizontal bar portion 30 and a thin thickness on the side perpendicular to the horizontal bar portion 30. Therefore, as basically shown in the mechanics of materials, the filament portion 20 with the irregular cross section requires different forces depending on the bending direction. In other words, the bending moment differs depending on the bending direction.

When a force indicated by an arrow f acts near the connecting portion 20a of the filament portion 20 in FIG. 7(a), the filament portion 20 moves in the direction where the stress is minimum (
The attitude will be automatically changed in the direction in which the section modulus becomes smaller.

Specifically, as shown in FIG. 7(a), the filament portion 20
When the long side of the cross section is oriented as shown by arrow L, a force shown by arrow A is applied (this force occurs when the horizontal bar portion 30 moves forward in the hollow needle 6 and the filament portion 20 penetrates the product F). ) means that the arrow L is bent as shown in the figure.
The direction indicated by ``, that is, the posture is changed by 90'' to make it easier to bend.

Therefore, the head lO fixed to one end of the filament section 20 rotates 90'' as the filament section 20 twists.

FIG. 8 is a diagram showing a state in which the locking piece P according to the present invention is driven in, and for the reason shown in FIG. As the filament portion 20 bends, the head portion 10 of the locking piece p, which had been placed in the same position, is twisted at an angle of 90° and becomes parallel to the side surface of the attachment device 7. In this state, the slits are no longer 16 and 15.
This prevents the side edge portion 1a of the head 10 from being inserted.

In the above embodiment, the axis of the filament part and the wide part were aligned in the axial direction of the horizontal bar, but the axis of the wide part was slightly aligned with the axis of the horizontal bar. By arranging the heads so that they intersect with each other, the head can be rotated in a fixed direction, and it is possible to eliminate rotational defects at all.

〔Effect of the invention〕

The locking piece according to the present invention has at least a flattened cross-section of a portion of the filament that is coupled to the horizontal bar, and a wide cross section parallel to or close to the horizontal bar in a direction intersecting the horizontal bar; Preferably, it is formed thinner in the orthogonal direction, so
The following effects can be achieved. A horizontal bar is driven into the product, and when the connecting part of the filament part passes through a hole drilled in the product, it is forcibly bent, but during this bending, the filament part is oriented in a direction that reduces stress. Since it changes automatically and rotates 90 degrees, the head will be in a state that follows the side of the attachment device, and since it moves in this state, it can be inserted into the slit opened on the side of the attachment device and the side of the hollow needle. It is sent out smoothly without any problems.

In particular, in locking pieces where the filament part is short and the thickness of the head is thinner than the slit, there is a strong tendency for the side green part of the head to fit into the slit, but according to the present invention,
Such defects do not occur at all. Recently, locking pieces with thinner heads are being used,
Even in the case of such a locking piece, it can be driven efficiently.

Therefore, the locking piece according to the present invention has a large number of locking pieces on one connecting rod, so that the driving operation is not affected by the thickness of the head or the length of the filament part. It is now possible to manufacture a locking piece assembly in which pieces are arranged, making manufacturing more efficient, eliminating tangles during transportation, and eliminating the need to frequently load the locking piece assembly into a mounting device during use. This allows for efficient price tagging and other bundling operations.

[Brief explanation of drawings]

1 and 2 are a front view and a side view showing a part of a locking piece assembly according to the present invention, and FIG. 3 is an enlarged front view of a connecting portion of a filament portion, and shows the location of the connecting portion. The figure shows the shape of the cross section with different values. 4, 5, and 6 are enlarged views of connecting portions of filament portions having other cross sections. FIGS. 7(a) and 7(b) are explanatory diagrams of the operation of the locking piece of the present invention. FIG. 8 is an explanatory diagram of the driving state of the locking piece according to the present invention, FIG. 9 is an explanatory diagram of the driving state of the conventional locking piece, FIG. 10 is a perspective view of the locking piece assembly, and FIG. 11 FIG. 2 is an explanatory diagram of a state in which a conventional locking piece is driven in. 1, 10...Head 3, 30...Horizontal bar part 5, 50...Connection rod 7...Mounting device 2, 20...Filament part 4, 40...Connection part 6...・Hollow needle 15. 16...Slit.

Claims (1)

[Scope of Claims] 1. A head, a horizontal bar portion arranged parallel to the head at a distance, and a filament portion orthogonally connecting the head and the center portion of the horizontal bar. A locking piece assembly in which a plurality of locking pieces consisting of the following are planted on a connecting rod via a connecting part protruding from the horizontal bar in the extending direction of the filament, at least the horizontal rod of the filament. A head rotation type locking piece characterized in that the cross-sectional shape of the base of the horizontal bar is flat in the extending direction of the horizontal bar. 2. A rotating head type locking device, characterized in that at least the root portion of the filament portion is formed such that the cross-sectional modulus of the cross-bar portion when bent in the longitudinal direction is larger than the cross-sectional modulus when bending in a direction other than the above-mentioned direction. Piece. 3. A head rotation type locking piece characterized in that the cross-sectional shape of the base of the horizontal bar portion of the filament portion is elliptical.