JP2020091382A - Attachment member, and manufacturing method therefor - Google Patents

Abstract

To solve the problem that an impact arising when fitting and locking a male member to a female member is transferred to the hands of an operator so that pain is also caused after repeated work, and further that, in a fitting lock mechanism of a male member and a female member, the male member is prevented from falling off, however, turning of the male member in the female member cannot be inhibited, and therefore, when the turning occurs, a filament is twisted resulting in an extremely poor appearance of a fitting state with respect to a product.SOLUTION: Provided is an attachment member, in which an elastomer is used as a filament, a male member for insertion is fastened to one end of the filament, whereas the other end receives the male member to fit and lock it, and a female member capable of forming the filament into a ring-shape is fastened. In the attachment member, an end of the filament is penetrated and disposed in a center hole along the longer direction of at least the male member, and the filament is exposed to the outside from the center hole at a tip of the male member, and the exposed filament is projecting.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an attach member, and more particularly to a fastener for attaching and hanging a tag indicating a price, a material, etc. on a product, or an attach member that can be used for fastening and bundling, and a manufacturing method thereof.

Conventionally, the above-mentioned attachment member is a male member for insertion into one end of a linear filament, and the male member is inserted into the other end to be in a locked state to form the filament in a ring shape. Known as. In general, a filament is often made of a plastic that is stretched to be tough to avoid cutting, or a yarn that takes into consideration the appearance balance with a product.

However, when using plastic or thread as the filament, it is necessary to prepare several sizes according to the size of the product, so to avoid this, use a stretchable elastomer for the filament. Has been developed (Patent Document 1).

However, even with this attachment member, the male member and the female member are inevitably molded from hard plastic, and the shock during fitting may be transmitted to the hand during repeated work, causing pain. ..

Japanese Patent No. 5345365 Japanese Patent No. 3547324

A problem to be solved by the present invention is that an impact is transmitted to an operator's hand when the male member and the female member are fitted and locked, and pain is caused in repeated work. In the female member fitting lock mechanism, the male member is prevented from coming off, but the rotation of the male member within the female member cannot be suppressed, and when this rotation occurs, the filament is twisted and That is, it looks very bad when it is attached to.

In order to solve the above-mentioned problems, the attach member according to the present invention uses an elastomer as a filament, and a male member for insertion is fixed to one end of the filament, and the male member is received and fitted to the other end. In an attach member to which a female member capable of locking and forming a filament in a ring shape is fixed, an end portion of the filament is provided so as to penetrate at least a central hole along the longitudinal direction of the male member. At the tip of the filament, the filament is exposed from the central hole to the outside.

Further, the attach member according to the present invention is characterized in that the above-mentioned exposure is projected, and the above-mentioned fitting lock is releasable, and at least one of the outer surface of the above-mentioned male member is It is characterized in that an elastomer, which is a material of the filament, is attached to the portion, and the above-mentioned attachment of the elastomer is performed on the surface opposite to the gate position for molding the male member.

Further, a method for manufacturing an attach member according to the present invention is a method for manufacturing the attach member according to claim 1, wherein the attach member is a separation type in which a cavity for forming a male member and a female member is formed. The filament elastomer is passed between the cavities and set in a mold, and then the molds are aligned with each other, and a thermoplastic resin is pressure-injected into each of the cavities through a gate to form a male member and a female member so as to cover the elastomer. It is characterized by molding and cutting the elastomer.

Then, in the method for manufacturing an attach member according to the present invention, the elastomer has a core ball formed at an end, and the above-mentioned cut is made between the core ball and the tip of the male member, at the time of molding the male member. The core ball for the next molding is formed in an elastomer synchronously, and the core ball is fed into the cavity for the female member at the time of the subsequent molding of the continuously molded attach member and is set therein. It is characterized in that the thermoplastic resin is injected under pressure so that the female member covers the elastomer at least twice as long as the diameter of the elastomer.

Further, the manufacturing method of the attach member according to the present invention, at least by the pressure of the pressure injection of the thermoplastic resin for molding the male member, deform the set elastomer to the cavity inner wall surface on the side opposite to the pressure injection gate. It is characterized in that the pressed elastomer is transferred and adhered to the outer wall surface of the male member.

The attachment member and the manufacturing method thereof according to the present invention are configured as described above. Since the elastomer that forms the filament from the tip of the male member is exposed to the outside, when the male member is inserted and fitted into the female member and brought into the locked state, the exposed elastomer serves as a cushioning material and is mounted. The shock of time can be softened, and there is no risk of damaging the operator's hand.

Further, since a part of the elastomer is attached to the outer surface of the male member, the male member may rotate within the female member while the male member is attached to the female member and locked. It is possible to prevent the twist of the elastomer as a filament by controlling the adhered elastomer.

It is a front view of the attachment member which implemented the present invention. Similarly, it is an enlarged view of a male member. Similarly, it is the figure which made the male member the cross section. Similarly, it is an enlarged view which made the female member a cross section. It is a figure which similarly shows the state which extended the filament. It is a figure which similarly shows a modification. Similarly, it is a figure just before inserting a male member into a female member. FIG. 8 is a diagram obtained by rotating FIG. 7 by 90 degrees. Similarly, it is a figure in which a male member is inserted and fitted in a female member and brought into a locked state. FIG. 10 is also a view obtained by rotating FIG. 9 by 90 degrees. It is a figure which similarly shows a buffer state at the time of inserting and fitting a female member. FIG. 12 is a view obtained by rotating FIG. 11 by 90 degrees. FIG. 5 is a view similarly showing a ring shape with a part thereof broken away. It is a figure which similarly shows an example of a use condition. Similarly, it is the figure which looked at the male member from the back side. It is also a side view. It is a front view which shows the state similarly made into a ring. It is a ring-shaped figure when it is made releasable. Similarly, it is a front view. It is a figure which shows the released state. It is a front view of an attach member which can be released. It is a figure which shows other Examples which made a male member a cross section. It is a figure which shows the outline of a manufacturing method.

This is realized by configuring as shown in the drawing and as described in the embodiment.

Next, a preferred embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 indicates an attach member embodying the present invention, and reference numeral 2 indicates a filament used in the attach member 1. The filament 2 is formed of an elastomer and is a linear body having a predetermined length. As the elastomer, polystyrene-based, polyolefin-based, or polyurethane-based thermoplastic resin is used. Depending on the case, natural rubber or a rubber string shirred with polyester thread may be used.

A male member (insertion portion) 3 is integrally provided at one end of the above-mentioned filament 2 by penetrating the filament 2 into a central hole 4 formed in the longitudinal direction thereof. A tip 3a of the male member 3 is tapered as an insertion guide into an insertion hole of a female member (reception portion) described later, and a base portion of the tip 3a is locked with an engaging portion of the female member to prevent locking. The stepped portion 3b is formed, and the tip of the filament 2 is projected from the through hole 4 to the outside and is exposed to the outside of the tip 3a as a protruding portion 2a.

Further, a trace of the gate 5 for resin injection at the time of molding is left on the outer surface of the male member 3. The other end of the filament 2 is provided with a female member 6 for receiving and locking the male member 3 described above, and the filament is provided in a bottomed hole 7 formed at the center of the female member 6 in the longitudinal direction. The other end of 2 is tightly housed and integrated.

The female member 6 is formed with an opening 6a into which the distal end 3a of the male member 3 is inserted, and an engaging portion 6b which engages with the stepped portion 3b of the male member 3 is provided in the inner portion of the opening 6a. Has been.

The male member 3 and the female member 6 described above are molded of a thermoplastic resin such as polypropylene, polyamide, polyethylene, polystyrene, polystyrene terephthalate. Further, as shown in FIG. 5, the female member 6 and the filament 2 are integrated with each other by providing the bottomed hole 7 with a length B which is more than twice the diameter A of the filament 2 as shown in FIG. Will have. In the form shown in FIG. 5, the diameter of the end portion, which is the portion to be housed in the bottomed hole 7, can be made large beforehand.

Further, as shown in FIG. 6, the tip of the filament 2 may be projected to the inner bottom portion of the opening 6 a of the female member 6.

As described above, the male member 3 is inserted (press-fitted) into the opening 6a of the female member 6 from the tip 3a thereof, and the step portion 3b is engaged with the engaging portion 6b to be in the locked state, so that the filament 2 is It becomes an endless ring. The above-mentioned engagement is made by the resilience of the engaging portion 6b. At this time, the tip 3a of the male member 3 is pushed to the bottom of the opening 6a, and the impact of the collision between the bottom of the opening 6a and the tip 3a of the male member 3 is buffered by the protrusion 2a at the tip of the filament 2. This is the case (see FIGS. 7, 9, and 11).

Further, the opening 6a of the female member 6 may be formed by forming at least a pair of opposing wall surfaces 6c, 6c, and may be formed at the tips of the opposing wall surfaces 6c, 6c. You can get stronger.

The combined state of the male member 3 and the female member 6 is shown in FIGS. 9 to 12. 11 and 12 show a state in which the tip of the protruding portion 2a of the filament 2 is abutted and pressed against the inner bottom of the opening 6a and undergoes buffer deformation along the inner bottom surface.

By inserting and fitting the male member 3 into the female member 6, the filament 2 is formed into an endless ring shape (see FIG. 13). At this time, as shown in FIG. 14, first, the entire male member 3 is inserted into the through hole H of the tag T, and then the male member 3 is inserted and fitted into the female member 6 to be joined, so that the tag T is suspended. You will be able to do so.

Further, on the side surface of the male member 3 opposite to the gate 5, an elastomer attachment portion 8 made of the same material as the elastomer forming the filament 2 is formed. Due to the presence of the elastomer attachment portion 8, it is possible to prevent the male member 3 from rotating (rotating) inside the female member 6 by friction when the male member 3 is in a locked state in which the male member 3 is fitted with the female member 6. It is possible to prevent twisting of the filament 2 caused by this rotation. The formation of the adhesion portion 8 will be described in the manufacturing method described later.

Further, the female member may have a shape capable of releasing the locked state as shown in FIGS. 18 to 21. The female member 9 shown here has concave portions 9d and 9d formed on both outer side surfaces so that it can be easily picked up and supported by fingers, and an open portion 9b is formed which communicates from the tip opening 9c to the upper surface. The engaging portion 9a is formed so as to be continuous with the opening portion 9b, and a constricted portion formed from the step portion 3a of the male member 3 to the base end is sandwiched between the engaging portions 9a, 9a and the tip end opening. Has become.

With this configuration, the male member 3 is fitted by fitting the tip 3a from the upper rear side of the opening 9b and tilting it toward the tip of the female member 9. From this fitting lock state, conversely, the male member 3 can be released by releasing the lock state by lifting the base end and inverting it.

Furthermore, the configuration of the tip of the male member 3 may be as shown in FIG. In this case, the tip of the filament 2 is cut flush with the top surface of the tip 3a, and the cross section of the filament 2 is exposed to the top surface of the tip 3a. This structure is made by cutting the top of the tip 3a of the male member 3 at the same time when the filament 2 is cut in the manufacturing method described later.

Next, a method for manufacturing the attach member 1 according to the present invention will be described with reference to FIG. 23A shows an empty mold, B shows a state where pre-molding is completed, C shows a state where a core ball is set in the female member cavity, D shows a state where each cavity is filled with resin, E Shows the state where the elastomer wire is cut (sheared). In the figure, the female member 6 and the core ball 14 are hatched differently, but since they are molded by the same resin, they are integrated and become substantially one member. In this manufacturing method, a mating die 10 in which cavities 11 and 12 for molding the male member 3 and the female member 6 are formed is used, and a filament prepared in advance between the cavities 11 and 12 is used. A groove 13 is formed on which the elastomer wire for 2 is bridged.

A cavity 15 for a core ball 14 provided at the end of the elastomer wire for the filament 2 is formed as a separate piece in communication with the cavity 11 on the tip side of the male member 3 of the cavity 11 for the male member 3. There is. The elastomer wire for the filament 2 is set in the groove 13 described above. Initially, since the core ball 14 does not exist at the end of the elastomer wire, the end is bound to form a portion larger in size than the inner diameter of the bottomed hole 7 of the female member 6, and the portion is formed. Is fitted in the cavity 12 to prevent the elastomer wire rod from coming off. The core ball 14 has a configuration in which two bumps are continuously formed in the peripheral region of the elastomer wire. From the state of FIGS. (B) to (E), the elastomer wire is extended outside the mold 10 for the subsequent molding.

From this set state, the thermoplastic resin is pressure-injected into the cavities 11 and 12 through the gate. At this time, in the cavity for the male member 3, the injection pressure of the thermoplastic resin is applied to the preset elastomer wire, and this elastomer wire is deformed, pressed against the inner surface of the cavity facing the gate side, and partially attached. Let

By the subsequent pressure injection of the thermoplastic resin, the thermoplastic resin covers the elastomer wire rod so that the male member 3 is molded. At the same time, the thermoplastic resin also enters the cavity 15 to form the core ball 14 around the elastomer wire. Further, regarding the female member 6, the thermoplastic resin does not press the elastomer wire in the cavity. In this, a gate is formed on the head (tip) side portion of the female member 6. Then, when the product is taken out from the mold, the adhered portion of the elastomer material formed on the inner wall surface of the cavity is transferred (transferred and adhered) to the outer surface of the male member 3 opposite to the gate 5, and the adhered portion 8 is formed. Will be formed. If this attachment portion 8 is formed on the outer side of the circumscribed circle of the male member 3, that is, on the outer surface of the maximum diameter, the anti-slip effect is further enhanced.

In the molded product, the elastomer wire is cut (sheared) in the mold 10 near the tip of the male member 3 by sliding the mold 10 or another piece. By this cutting, the protruding portion 2a of the filament 2 is formed from the tip 3a of the male member 3. At the time of this cutting, if the top surface of the tip 3a of the male member 3 is cut at the same time, the attachment member 1 having the structure shown in FIG. 22 is obtained. Incidentally, in order to deal with the elasticity of the elastomer wire rod in this shear cut, the surface of the elastomer wire rod may be covered with a thin film. After the work of (E) in FIG. 23, the state of (B) is restored.

The attachment member and the manufacturing method thereof according to the present invention are configured as described above. The thermoplastic resin such as polypropylene forming the male member 3 or the female member 6 and the elastomer forming the filament 2 have good adhesiveness, and the filament 2 does not fall out from the central hole of the male member 3 or the female member 6. Although an example of attaching the display tag is shown in FIG. 14 in the embodiment, it can be used for binding by utilizing the elasticity of the elastomer, or the range of use is wide for fastening. Further, shearing in the manufacturing method can be performed by cutting with a cutter, and since the core ball 14 is also configured to prevent the core ball 14 from coming off from the female member 6 or to engage with the female member 6, the bump-shaped portion can be continuously formed. The shape is not limited, and the shape is not specified as long as it is larger than the inner diameter of the bottomed hole 7.

DESCRIPTION OF SYMBOLS 1 Attach member 2 Filament 2a Projection part 3 Male member 3a Tip 3b Step part 4 Center hole 5 Gate 6 Female member 6a Opening 6b Engagement part 6c Wall surface 7 Bottomed hole 8 Adhesive part 9 Female member 9a Engagement part 9b Open part 9c Tip opening 9d Recessed portion 10 Mold 11 Cavity for male member 12 Cavity for female member 13 Groove 14 Core ball 15 Cavity for core ball T tag H Through hole

Claims (9)

An elastomer is used as a filament, and a male member for insertion is fixed to one end of the filament, and the male member is received and locked by fitting at the other end, and a female member capable of forming the filament into a ring is fixed. In the attachment member, the end portion of the filament is provided so as to penetrate at least a central hole along the longitudinal direction of the male member, and the filament is exposed to the outside from the central hole at the tip of the male member. Attaching member. The attachment member according to claim 1, wherein the exposed portion is projected. The attachment member according to claim 1, wherein the fitting lock is releasable. The attach member according to claim 1, wherein an elastomer, which is a material of the filament, is attached to at least a part of the outer surface of the male member. The attachment member according to claim 4, wherein the adhesion of the elastomer is performed on a surface opposite to a gate position for molding the male member. A method for manufacturing an attach member according to claim 1, wherein a separate mold having a cavity for molding a male member and a female member is provided with an elastomer for filament between the cavities. Set by handing over, molds are fitted together, thermoplastic resin is pressure-injected into each of the cavities through a gate to mold male and female members so as to cover and cover the elastomer, and the elastomer is cut. Method of manufacturing member. The above-mentioned elastomer has a core ball formed at the end, and the above-mentioned cut is made between this core ball and the tip of the male member, and the core ball for the next molding is formed in the elastomer in synchronization with the molding of the male member. 7. The method for manufacturing an attach member according to claim 6, wherein the core ball is sent into the cavity for the female member at the time of the next molding of the continuously formed attach member and set. The method for manufacturing an attach member according to claim 6 or 7, wherein the female member covers the elastomer by pressure injection of the thermoplastic resin with a length at least twice the diameter of the elastomer. .. At least by the pressure of the thermoplastic resin for molding the male member, the set elastomer is deformed and pressed against the inner wall surface of the cavity opposite to the pressure injection gate, and the pressed elastomer is pushed outside the male member. The method for manufacturing an attach member according to claim 1, wherein the attach member is transferred to a wall surface and attached.

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