KR101709756B1 - Clip type hair pin and Method for manufacturing the same - Google Patents

Abstract

According to an aspect of the present invention, there is provided an upper body (10) formed of a resin material; A metal piece 20 accommodated in the longitudinal direction inside the upper body 10 and having a leg portion 24 exposed to the outside; And a lower body (30) hingably connected to the leg portion (24) of the upper body (10) and tightly joined to the upper body (10) to bind the hair.
Accordingly, by introducing a structure in which the metal base is inserted into the resin base, it is possible to maintain the good decorative property and the fit feeling, while maintaining the position of the metal insert precisely during the mass production process, thereby preventing the durability from being weakened.

Description

[0001] The present invention relates to a clip type hair pin and a manufacturing method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an article for binding a head, and more particularly, to a clip-type hair clip and a method of manufacturing the same.

Generally, a clip-type hair clip has a structure in which the hair clip is vertically engaged with an elastic force or the like, and can provide a comfortable fit while maintaining a stable bundle state in a small unit regardless of a lot of hair thinning. However, a design using a resin material and a metal material in combination is preferred in order to prevent the strength from being weakened due to a relatively small structure, but a good moldability is not ensured in the mass production process, resulting in defects and durability deterioration.

As a prior art document which can be referred to in this connection, Korean Public Utility Model Publication No. 1999-0033180 (Prior Art 1) and Korean Patent Laid-Open Publication No. 2011-0105604 (Prior Art 2) are known.

The prior art document 1 includes a pair of plate members having hinge members at one end thereof and a space in which a predetermined plate can be inserted, A plurality of decorative plates provided with a plurality of imitation jewelry and detachably coupled to the outer side space; And detachment means for selectively detachably attaching the decorative plates to each other in the outer side space. Accordingly, it is not necessary to provide the molds in various forms, and the effect of lowering the production cost is expected.

The prior art document 2 discloses a decorative hair clip in which a decorative member made of a resin material and a pin body made of a metal material are integrally formed by thermally adhering to a back portion of a pin body with a root portion cut in the longitudinal direction, And a distal end of the projecting piece has a lateral bent portion. As a result, the effect of extending the life of the ornamental hairpin by thermally adhering the resin decorative member to the metal body is expected.

However, according to the above-mentioned prior art document 1, it is difficult to expect an increase in durability because it is necessary to increase the decorative property and reduce the production cost by a compatible structure, and according to the prior art document 2, the decorative member of resin material is attached to the body and attached As a key point, reveals limitations in increasing productivity.

1. Korean Utility Model Publication No. 1999-0033180 "hairpin" (public date: Aug. 5, 1999) 2. Korean Patent Publication No. 2011-0105604 "Ornamental Hairpin" (Open date: September 27, 2011)

It is an object of the present invention to overcome the above-mentioned problems of the prior art by introducing a structure in which a metal insert is inserted into a resin base to maintain a good ornamental property and a comfortable feeling, while precisely maintaining the position of a metal insert in a mass production process, A clip-type hair clip and a manufacturing method thereof.

According to one aspect of the present invention, there is provided an upper body formed of a resin material. A metal piece received in the longitudinal direction inside the upper body and having a leg portion exposed to the outside; And a lower body coupled to the legs of the upper body so as to be hinged and to be in close contact with the upper body to bind the hair.

In a detailed configuration of the present invention, the metal piece is provided with respective bent portions at its inner end and outer end so as to enhance rigidity and moldability.

As a detailed configuration of the present invention, the binding force is increased by the protrusions formed on the bottom surface of the upper body and the protrusions formed on the lower body.

According to another aspect of the present invention, there is provided a method of manufacturing a clip-type hair clip of claim 1, comprising the steps of: (a) receiving a metal piece in a mold; (b) forming an upper body by injecting a molten resin in a state of restricting the shaking of the metal piece; And (c) coupling the upper body and the lower body so as to be hinge-movable.

In the detailed construction of the present invention, the step (b) is characterized in that the magnet is fixed to the cavity of the metal mold to restrict the oscillation by the magnetic force acting on the metal piece.

As described above, according to the present invention, a structure in which a metal is inserted into a resin base is introduced to maintain a good decorative property and a comfortable feeling, while maintaining the position of a metal insert in a mass production process, thereby preventing durability from being weakened.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.
Fig. 2 is a schematic view showing a hairpin according to the present invention in a separated state; Fig.
Fig. 3 is a schematic view showing a state of coupling of a hair clip according to the present invention
Fig. 4 is a schematic view showing three parts of a metal piece of a hairpin according to the present invention
5 is a view showing a mold construction showing a method of manufacturing a hair clip according to the present invention
Fig. 6 is a configuration diagram showing a state in which a metal piece is supported on a metal mold of Fig. 5

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

According to one aspect of the present invention, a clip-type hair clip comprising an upper body (10), a metal piece (20), and a lower body (30) is disclosed. A clip-type hairpin means, but is not necessarily, a form suitable for binding a small unit of hair.

According to the present invention, the upper body 10 is formed of a resin material. The upper body 10 has an outer surface portion 11 on which a decorative pattern is formed and a pressing portion 13 formed on an inner end of the outer surface portion 11 so as to be pressed by hand. The inner end means a portion pressed by hand, and the outer end means a portion spreading. In addition, a plurality of concave-convex portions 16 are formed linearly on the inner surface portion of the upper body 10 to enhance gripping force against hair. The outer surface portion 11, the pressing portion 13, and the concave-convex portion 16 are simultaneously completed by the resin injection molding in the metal mold 40 described later.

The metal piece 20 of the present invention has a structure in which the leg portion 24 is received in the longitudinal direction inside the upper body 10 and exposed to the outside. As shown in FIG. 4, the metal piece 20 has a cross shape when viewed in plan view, and a cross shape is maintained even after the leg portions 24 on both sides are bent. The leg portion 24 is provided with a through hole 28 for receiving a hinge shaft (not shown) for hinge movement. The metal piece 20 is accommodated in the upper body 10 at a predetermined depth to generate strength corresponding to bending or twisting. However, since it is a miniaturized structure as a whole, it is often difficult to maintain a constant depth in mass production.

On the other hand, the metal piece 20 can be formed by press working including the leg portion 24 and the passage portion 28. [

As a detailed configuration of the present invention, the metal piece 20 is provided with bending portions 21 and 22 at its inner end and outer end, respectively, so as to enhance rigidity and moldability. In FIG. 4, the bent portion 21 at the inner end is short and the slope is urgent, and the bent portion 22 at the outer end is elongated and the inclination is gently illustrated. The height of the metal piece 20 is constantly supported by the bent portions 21 and 22 at both ends when the metal piece 20 is received in the metal mold 40. [ In this way, the rigidity against bending and twisting can be increased, and at the same time, the moldability can be increased so that the metal pieces 20 are accommodated in the upper body 10 at a certain depth.

The lower body 30 of the present invention is hingedly coupled to the legs 24 of the upper body 10 and closely attached to the upper body 10 to bind the hair. The lower body 30 is formed of a metal material as a whole and has a leg portion 34 and a communicating portion 38 on one side. The leg portion 24 of the metal piece 20 supporting the upper body 10 and the leg portion 34 of the lower body 30 are connected by a hinge shaft.

At this time, a torsion spring (not shown) may be installed on the hinge shaft so as to exert a binding force on the upper body 10 and the lower body 30.

The binding force is increased by the protrusions 16 formed on the bottom surface of the upper body 10 and the raised portions 32 formed on the lower body 30 as a detailed configuration of the present invention. The concave and convex portions 16 are formed at regular intervals on opposite sides of the inner surface portion of the upper body 10. The lower body 30 has a protruding portion 32 formed to have a width entering between the concave-convex portions 16 on both sides and protruding over a predetermined length. When the hair is bound to the hair pin, the protruding portion (32) closely contacts the hair with the concave / convex portion (16) to increase the binding force.

According to another aspect of the present invention, a method for manufacturing the clip-type hair clip of claim 1 is proposed. The structure of the hairpin upper body 10, the metal piece 20, and the lower body 30 is the same as in FIG.

Step (a) of the present invention proceeds with the process of accommodating the metal piece 20 in the metal mold 40. The mold 40 is divided into an upper part and a lower part as a part constituting the molten resin injection molding machine, and has a cavity 41, an injection port 42, and the like. The leg portion 24 of the metal piece 20 is engaged with the predetermined position of the lower mold 40 and the bent portions 21 and 22 of the metal piece 20 are brought into contact with the bottom surface of the lower mold 40. [ As shown in FIG. 5, it is advantageous to arrange the bending portion 21 at the inner end in the injection port 42 to reduce the flow, but the present invention is not limited thereto. The uneven groove 46 for forming the concave-convex portion 16 of the upper body 10 is not shown in Fig. 5 and is shown in Fig.

The step (b) of the present invention proceeds to a process of forming the upper body 10 by injecting the molten resin while restricting the swing of the metal piece 20. The molten resin flowing into the injection port 42 flows vertically and evenly through a gap formed by the cross shape of the metal piece 20 as shown in FIG. However, care should be taken not to cause molding defects due to the flow of the thin metal plate 20 in the up and down direction depending on the physical properties of the molten resin, the injection pressure, and the temperature.

The step (b) is characterized by fixing the magnet (44) to the cavity (41) of the metal mold (40) and restraining oscillation by the magnetic force acting on the metal piece (20). The magnet (44) is fixed on the lower mold (40) so that the magnet (44) is positioned at the portion where the deflection is the largest in the metal piece (20). Of course, the metal piece 20 should be formed of a magnetic material so that the magnetic force of the magnet 44 is transmitted. As shown in Fig. 5, when the magnet 44 supports the middle of the metal piece 20, the molding can be completed quickly and accurately irrespective of the condition of the molten resin.

The step (c) of the present invention proceeds with a process of hingingly coupling the upper body 10 and the lower body 30. When the hinge shaft and the torsion spring are buried in the state that the leg portion 24 exposed from the upper body 10 and the leg portion 34 of the lower body 30 are overlapped with each other, the clip type hair pin is completed. When the pressing portions 13 on both sides are pressed, the outer end side is opened. When the pressing is released, the engagement and binding state is maintained by the elastic force.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: upper body 11: outer surface
13: pressing portion 16: concave and convex portion
20: metal piece 21, 22:
24: Leg 28:
30: Lower body 32:
34: leg portion 36: concave / convex portion
38: Tongue studying 40: Mold
41: cavity 42:
44: Magnet 46: Uneven groove

Claims (5)

An upper body 10 formed of a resin material and having an uneven pressing portion 13 at one end;
A metal piece 20 accommodated in the longitudinal direction inside the upper body 10 and having a leg portion 24 exposed to the outside; And
And a lower body 30 coupled to the legs 24 of the upper body 10 so as to be hinged and to be in close contact with the upper body 10 to bind the hair,
The metal piece 20 has bending portions 21 and 22 at its inner end and outer end, respectively, so as to be received at a predetermined depth in the upper body 10,
Wherein the binding force is increased by the protrusions (16) formed on the bottom surface of the upper body (10) and the protrusions (32) formed on the lower body (30). delete delete A method for producing the clip-type hair clip of claim 1, comprising:
(a) receiving a metal piece (20) in a mold (40);
(b) injecting a molten resin in a state of restricting the oscillation of the metal piece (20) to form the upper body (10); And
(c) coupling the upper body (10) and the lower body (30) so as to be hingeable. The method of claim 4,
Wherein the step (b) fixes the magnet (44) to the cavity (41) of the metal mold (40) and restrains the swinging motion by the magnetic force acting on the metal piece (20).

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