CN1722910A - Insertion forming pieces, ear-hang parts of headsets, and method for making same - Google Patents
Insertion forming pieces, ear-hang parts of headsets, and method for making same Download PDFInfo
- Publication number
- CN1722910A CN1722910A CN200510071986.2A CN200510071986A CN1722910A CN 1722910 A CN1722910 A CN 1722910A CN 200510071986 A CN200510071986 A CN 200510071986A CN 1722910 A CN1722910 A CN 1722910A
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- wiry
- plastic material
- wire
- ear
- headphone
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- Injection Moulding Of Plastics Or The Like (AREA)
- Headphones And Earphones (AREA)
Abstract
To provide the manufacturing method of an insert molded product whereby the number of production of defective articles can be reduced, the reliability in the quality can be enhanced and occurrence of shrinkage can be suppressed. An ear hook component 1 for a headphone comprising a curved wire 2 coated by a first plastic member 3 and a second plastic member 4 by insert molding is configured such that both ends of the wire 2 are formed in a form of a taper 2a gradually getting smaller from a wire middle part toward the wire tip part.
Description
Technical field
The present invention relates to insertion forming piece and manufacture method thereof and headphone ear-hang parts and manufacture method thereof.
Background technology
For example, the ear-hang parts that headphone is used have the cradle portion that is used for fixing receiver (headphone), and are wholely formed by bent member.
In the past, the known useful plastic material of ear-hang parts used of this headphone was made curved shape with profile and to be circular wire cover in the cross section forms.
The manufacturing of the ear-hang parts that this headphone is used is adopted and is inlayed forming technique, by cover each end that the cross section is circular bent wire with first plastic material of hard after, cover the realization of assigning to of the part of this first plastic material and crooked pars intermedia wiry with the second soft plastic material again.In this case, when covering crooked each end wiry with first plastic material, need each end wiry (near middle part wiry) of the bending of fixed configurations in molding die, and molten resin (first plastic material) is expelled to molding die near the cast gate that is positioned at these cradle portion.
But, the ear-hang parts that existing headphone is used are owing to be molten resin (first plastic material) to be expelled to each end wiry form to make in the molding die of the state configuration of bending, thereby, in injecting molten resin (when inlaying shaping), as shown in Figure 4, be subjected to each end (leading section wiry) flexural deformation of the wire 40 of this injection (filling) pressure, and at molding die 41 bias internals.In this case, the bending deformation quantity of each end of wire 40 (side-play amount) changes according to the fixed position a of each end of wire 40.That is, the fixed position a and the distance L between the front position b wiry of wire 40 are big more, and then the flexural deformation of each end of wire 40 (amount of deflection) amount is big more.Its result, bending deformation quantity for each end of wire 40, if the length setting that first plastic material 42 of each end of wire 40 is covered is a large-size, then the fixed position a of wire 40 and the distance L between the front position b wiry increase, the bending deformation quantity of each end in molding die 41 of wire 40 also increases thereupon, thereby the problem that exists is, the part of outside can appear not being exposed to by first plastic material, 42 abundant coverings in each end of wire 40, forms waster.
In addition, if each end of wire 40 is insufficient by the covering of first plastic material 42, also following problems can appear, can see the weld mark by first plastic material 42 of wire mid portion (molten resin converge position) of each end of being formed on wire 40 easily, reduce the reliability of product quality aspect.
Therefore, though can consider to shorten wire length (overlay length of first plastic material 42 of each end of wire 40) (reducing the fixed position a of wire 40 and the distance L between the b of front end of wire position), and the bending deformation quantity of each end of the wire 40 when reducing to inlay shaping, but, in this case, because can not guarantee the overlay capacity of each end of 40 pairs of wires 40 of first plastic material fully, so the problem that exists is, can be created in leading section wiry (crack) near the plastic shrink amount of inlaying after the shaping strengthen, and produce insufficient fill.
Summary of the invention
The present invention is in view of existing the problems referred to above to propose, its purpose is to provide a kind of quantity that both can reduce waster, can also improve the reliability of quality aspect and can suppress the insertion forming piece of generation of insufficient fill and ear-hang parts and manufacture method thereof that manufacture method and headphone are used.
In order to achieve the above object, first scheme of the present invention provides a kind of insertion forming piece, make forniciform wire be covered in the insertion forming piece that forms by plastic material by inlaying to be shaped, it is characterized in that the cone that diminishes gradually to leading section wiry from pars intermedia wiry is made at above-mentioned both ends wiry.
Adopt this structure, even when inlaying shaping, be subjected to molten resin injection pressure each end bent distortion wiry and at the molding die bias internal, owing to also can guarantee the thickness of the plastic material on each end wiry, so, each end wiry all can be covered reliably by plastic material and can not be exposed to the outside.
In addition, because each end wiry is covered fully by plastic material, so be difficult to see the weld mark of formed plastic material on the close wire pars intermedia at both ends wiry.
And then, thereby because need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of the plastic material of each end wiry, and reduce the plastic shrink amount after leading section wiry is inlayed shaping.
Alternative plan of the present invention provides a kind of manufacture method of insertion forming piece, be pre-formed forniciform wire and covered in the manufacture method of the insertion forming piece that forms by plastic material by inlaying to be shaped to make, it is characterized in that, before implementing to inlay shaping, the cone that diminishes gradually to leading section wiry from pars intermedia wiry is made at above-mentioned both ends wiry.
Adopt this method, even when inlaying shaping, be subjected to molten resin injection pressure each end bent distortion wiry and at the molding die bias internal, owing to also can guarantee the thickness of the plastic material on each end wiry, so, each end wiry all can be covered reliably by plastic material and can not be exposed to the outside.
In addition, because each end wiry is covered fully by plastic material, so be difficult to see the weld mark of formed plastic material on the close wire pars intermedia at both ends wiry.
And then, thereby because need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of the plastic material of each end wiry, and reduce the plastic shrink amount after leading section wiry is inlayed shaping.
The ear-hang parts that third party's case of the present invention provides a kind of headphone to use, by inlaying in the ear-hang parts that the headphone forniciform wire is covered by plastic material form of being shaped uses, it is characterized in that the cone that diminishes gradually to leading section wiry from pars intermedia wiry is made at above-mentioned both ends wiry.
Adopt this structure, even when inlaying shaping, be subjected to molten resin injection pressure each end bent distortion wiry and at the molding die bias internal, owing to also can guarantee the thickness of the plastic material on each end wiry, so, each end wiry all can be covered reliably by plastic material and can not be exposed to the outside.
In addition, because each end wiry is covered fully by plastic material, so be difficult to see the weld mark of formed plastic material on the close wire pars intermedia at both ends wiry.
And then, thereby because need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of the plastic material of each end wiry, and reduce the plastic shrink amount after leading section wiry is inlayed shaping.
The ear-hang member manufacturing method that cubic case of the present invention provides a kind of headphone to use, be pre-formed forniciform wire and covered by plastic material in the ear-hang member manufacturing method that the headphone that forms uses by inlaying to be shaped to make, it is characterized in that, before implementing to inlay shaping, the cone that diminishes gradually to leading section wiry from pars intermedia wiry is made at above-mentioned both ends wiry.
Adopt this method, even when inlaying shaping, be subjected to molten resin injection pressure each end bent distortion wiry and at the molding die bias internal, owing to also can guarantee the thickness of the plastic material on each end wiry, so, each end wiry all can be covered reliably by plastic material and can not be exposed to the outside.
In addition, because each end wiry is covered fully by plastic material, so be difficult to see the weld mark of formed plastic material on the close wire pars intermedia at both ends wiry.
And then, thereby because need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of the plastic material of each end wiry, and reduce the plastic shrink amount after leading section wiry is inlayed shaping.
The present invention can obtain following effect.
Adopt first scheme of the present invention, even when inlaying shaping, be subjected to molten resin injection pressure each end bent distortion wiry and at the molding die bias internal, owing to also can fully guarantee the thickness of the plastic material on each end wiry, so, each end wiry all can be covered reliably by plastic material and can not be exposed to the outside, thereby can reduce the quantity of waster.
In addition, adopt first scheme of the present invention, because each end wiry is covered fully by plastic material,, can improve the reliability of quality aspect so be difficult to see the weld mark of formed plastic material on the close wire pars intermedia at both ends wiry.
And then, adopt first scheme of the present invention, thereby because need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of the plastic material of each end wiry, and reduce plastic shrink amount after leading section wiry is inlayed shaping, thereby can suppress the generation of insufficient fill.
Adopt alternative plan of the present invention, even when inlaying shaping, be subjected to molten resin injection pressure each end bent distortion wiry and at the molding die bias internal, owing to also can fully guarantee the thickness of the plastic material on each end wiry, so, each end wiry all can be covered reliably by plastic material and can not be exposed to the outside, thereby can obtain to reduce the insertion forming piece of waster quantity.
In addition, adopt alternative plan of the present invention, because each end wiry is covered fully by plastic material,, can obtain to improve the insertion forming piece of the reliability of quality aspect so be difficult to see the weld mark of formed plastic material on the close wire pars intermedia at both ends wiry.
And then, adopt alternative plan of the present invention, thereby because need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of the plastic material of each end wiry, and reduce plastic shrink amount after leading section wiry is inlayed shaping, thereby can obtain to suppress the insertion forming piece that insufficient fill takes place.
Adopt third party's case of the present invention, even when inlaying shaping, be subjected to molten resin injection pressure each end bent distortion wiry and at the molding die bias internal, owing to also can fully guarantee the thickness of the plastic material on each end wiry, so, each end wiry all can be covered reliably by plastic material and can not be exposed to the outside, thereby can reduce the quantity of waster.
In addition, adopt third party's case of the present invention,,, can improve the reliability of quality aspect so be difficult to see the weld mark of formed plastic material on the close wire pars intermedia at both ends wiry because each end wiry is covered fully by plastic material,
And then, adopt third party's case of the present invention, thereby because need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of the plastic material of each end wiry, and reduce plastic shrink amount after leading section wiry is inlayed shaping, thereby can suppress the generation of insufficient fill.
Adopt cubic case of the present invention, even when inlaying shaping, be subjected to molten resin injection pressure each end bent distortion wiry and at the molding die bias internal, owing to also can fully guarantee the thickness of the plastic material on each end wiry, so, each end wiry all can be covered reliably by plastic material and can not be exposed to the outside, thereby can obtain to reduce the ear-hang parts that the headphone of waster quantity is used.
In addition, adopt cubic case of the present invention, because each end wiry is covered fully by plastic material, so be difficult to see the weld mark of formed plastic material on the close wire pars intermedia at both ends wiry, can obtain to improve the ear-hang parts that the headphone of the reliability of quality aspect is used.
And then, adopt cubic case of the present invention, thereby because need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of the plastic material of each end wiry, and reduce plastic shrink amount after leading section wiry is inlayed shaping, thereby can obtain to suppress the ear-hang parts that the headphone of the generation of insufficient fill is used.
Description of drawings
Fig. 1 is the stereogram of the insertion forming piece integral body of expression embodiments of the invention.
Fig. 2 is the stereogram of manufacture method that is used to illustrate the insertion forming piece of embodiments of the invention.
Fig. 3 is the sectional view of the state that covered by plastic material of the end wiry of the insertion forming piece of expression embodiments of the invention.
Fig. 4 is the sectional view of the state that covered by plastic material of the end wiry of the existing insertion forming piece of expression.
Embodiment
The present invention a kind ofly makes forniciform wire be covered the ear-hang parts that the headphone that forms is used by plastic material by inlaying to be shaped, above-mentioned both ends wiry are by making the taper that diminishes gradually to leading section wiry from pars intermedia wiry, thereby realized both can reducing the quantity of waster, the reliability of product quality aspect can also be improved, and the generation of insufficient fill can be suppressed.
Below, in accordance with the embodiments illustrated insertion forming piece of the present invention and manufacture method thereof are described.At first, utilize Fig. 1 that the insertion forming piece of present embodiment is described.Fig. 1 is the stereogram of the insertion forming piece integral body of expression embodiments of the invention.
In Fig. 1, the ear-hang parts as the headphone of the insertion forming piece of representing with label 1 is used are formed by first plastic material 3 and 4 coverings of second plastic material by inlaying the wire 2 that shaping is used that is shaped, and the whole bending part that forms.An end of the ear-hang parts of using at headphone 1 has disposed and has been used to cooperate the fixedly cradle portion 1a of the hook-type of headphone 5.On cradle portion 1a, connection is provided with the ear-hang parts 1b that the ear-hang parts 1 that are used for that headphone is used remain on user's ear.
First plastic material 3 covers the both ends of wire 2, and integral body is formed by rigid plastics such as PP (polyene third) resins.
Second plastic material 4 covers a part and the pars intermedia wiry of first plastic material 3, and whole flexible plastic by elastomer resin etc. forms.
Next, utilize Fig. 2 that the manufacture method of the insertion forming piece (the ear-hang parts that headphone is used) of present embodiment is described.Fig. 2 is the stereogram of manufacture method that is used to illustrate the insertion forming piece of embodiments of the invention.Fig. 2 (a) is that the expression profile is forniciform stereogram wiry.Fig. 2 (b) is the stereogram of the state that covered by first plastic material of the both ends wiry of presentation graphs 2 (a).Fig. 2 (c) is the stereogram of the state that covered by second plastic material of the drip molding of presentation graphs 2 (b).
The manufacture method of the ear-hang parts 1 that the headphone of present embodiment is used is owing to be to implement successively according to the operation of " formation wire " and " covering wire ", so, successively these operations are described.
" formation wiry " shown in Fig. 2 (a), make from pars intermedia wiry after the cone 2a that leading section wiry diminishes gradually at the both ends of the circular metal wire 2 that will cut off by predetermined length, is bent to form the profile of this wire 2.In this case, the formation of cone 2a is implemented after can forming bending in the profile with wire 2.
" covering wiry ", at first, at the both ends and the injecting molten resin (first plastic material 3) of the wire 2 of the first molding die internal fixation band taper, shown in Fig. 2 (b), the both ends of the wire 2 of band taper are covered by first plastic material 3.
Next, intermediate and injecting molten resin (second plastic material 4) at the insertion forming piece shown in second molding die internal fixation Fig. 2 (b), shown in Fig. 2 (c), the part of first plastic material 3 and pars intermedia wiry are covered by second plastic material 4.
Like this, just can make the ear-hang parts 1 that headphone is used.
Promptly, the manufacture method of the ear-hang parts 1 that the headphone of present embodiment is used, be to inlay the manufacture method that is configured as the ear-hang parts of being used by the headphone of first plastic material 3 and 4 coverings of second plastic material 1 by being pre-formed forniciform wire 2, before implementing to inlay shaping, the both ends of wire 2 are made the cone 2a that reduces gradually to leading section wiry from pars intermedia wiry.
Therefore, in the present embodiment, as shown in Figure 3, even when inlaying shaping, be subjected to molten resin injection pressure wire 2 each end because of flexural deformation at molding die C bias internal, thickness owing to the plastic material (first plastic material 3) on each end that can fully guarantee wire 2, thereby each end of wire 2 all can be covered reliably by first plastic material 3 and can not be exposed to the outside, thereby can reduce the quantity of waster.
In addition, in the present embodiment, because each end of wire 2 is all fully covered by first plastic material 3,, can improve the reliability of quality aspect so be difficult to see the weld mark of formed first plastic material 3 of close wire pars intermedia at both ends wiry.
And then, in the present embodiment, thereby owing to need not to shorten the bending deformation quantity that length wiry reduces wire ends, so, can guarantee the overlay capacity of first plastic material 3 of each end of wire 2, and the plastic shrink amount of leading section wiry after inlaying shaping reduced, thereby can suppress the generation of insufficient fill.
In addition in the present embodiment, though to each end of wire 2 is that the situation of Frusto-conical cone 2a is illustrated, but the present invention is not limited thereto, and also can be conical cone, even what difference is the cone of other butt pyramids or pyramid shape do not have yet.That is, the pyramid that reduces gradually to leading section wiry from pars intermedia wiry also can be made in both ends wiry.
In addition, in the present embodiment, though as insertion forming piece explanation is the situation of the ear-hang parts used of headphone, but the present invention is not limited thereto, for example, also can be the ear-hang parts that receivers such as ear-hang parts that earphone is used are used, can certainly be the insertion forming piece outside the ear-hang parts used of receiver.
That is, main is, the present invention can be a kind of by inlaying the insertion forming piece that is shaped forniciform wire is covered by plastic material, and the taper that reduces gradually to leading section wiry from pars intermedia wiry is made at both ends wiry.In addition, its manufacture method is to be pre-formed forniciform wire is covered the insertion forming piece that forms by plastic material manufacture method by inlaying to be shaped to make, before implementing to inlay shaping,, both ends wiry implement to the taper that leading section wiry diminishes gradually by being made from pars intermedia wiry.
If adopt the structure and the manufacture method thereof of this insertion forming piece, then can obtain and adopt resulting same effect under the structure of ear-hang parts of above-mentioned headphone (receiver) usefulness and the manufacture method situation thereof.
Claims (4)
1. an insertion forming piece by inlaying to be shaped forniciform wire is covered in the insertion forming piece that forms by plastic material, is characterized in that,
The cone that diminishes gradually to leading section wiry from pars intermedia wiry is made at above-mentioned both ends wiry.
2. the manufacture method of an insertion forming piece being pre-formed forniciform wire and being covered in the manufacture method of the insertion forming piece that forms by plastic material by inlaying to be shaped to make, is characterized in that,
Before implementing to inlay shaping, the cone that diminishes gradually to leading section wiry from pars intermedia wiry is made at above-mentioned both ends wiry.
3. ear-hang parts that headphone is used by inlaying in the ear-hang parts that the headphone that forniciform wire covered by plastic material form of being shaped uses, is characterized in that,
The cone that diminishes gradually to leading section wiry from pars intermedia wiry is made at above-mentioned both ends wiry.
4. ear-hang member manufacturing method that headphone is used being pre-formed forniciform wire and being covered by plastic material in the ear-hang member manufacturing method that the headphone that forms uses by inlaying to be shaped to make, is characterized in that,
Before implementing to inlay shaping, the cone that diminishes gradually to leading section wiry from pars intermedia wiry is made at above-mentioned both ends wiry.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004185161 | 2004-06-23 | ||
| JP2004185161A JP2006013702A (en) | 2004-06-23 | 2004-06-23 | Insert molded product and manufacturing method thereof, and ear hook component for headphone and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1722910A true CN1722910A (en) | 2006-01-18 |
Family
ID=35780438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510071986.2A Pending CN1722910A (en) | 2004-06-23 | 2005-05-25 | Insertion forming pieces, ear-hang parts of headsets, and method for making same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006013702A (en) |
| CN (1) | CN1722910A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491476A (en) * | 2013-09-18 | 2014-01-01 | 青岛歌尔声学科技有限公司 | Earphone headband, manufacturing method of earphone headband and earphones with earphone headband |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5018130B2 (en) * | 2007-02-23 | 2012-09-05 | 株式会社Ｊｖｃケンウッド | Earphones and earphones |
| CN110587906B (en) * | 2019-08-19 | 2021-06-18 | 现代精密塑胶模具（深圳）有限公司 | Method for forming product with built-in wire |
-
2004
- 2004-06-23 JP JP2004185161A patent/JP2006013702A/en not_active Withdrawn
-
2005
- 2005-05-25 CN CN200510071986.2A patent/CN1722910A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491476A (en) * | 2013-09-18 | 2014-01-01 | 青岛歌尔声学科技有限公司 | Earphone headband, manufacturing method of earphone headband and earphones with earphone headband |
| CN103491476B (en) * | 2013-09-18 | 2016-09-28 | 青岛歌尔声学科技有限公司 | A kind of earphone wearing and manufacture method thereof and use this earphone worn |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006013702A (en) | 2006-01-12 |
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| WD01 | Invention patent application deemed withdrawn after publication |