JP2000276132A - Mouthpiece having metallic surface and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mouthpiece which is more inexpensive than mouthpieces of castings and has the good feel of a material and touch. SOLUTION: A front surface metallic part 12 having the mouthpiece 11 for exhalation consists of a pressed article of a metallic material. An inner portion 14 enclosing the mouthpiece 11 and an outer portion 15 existing on the outer side of the inner portion 14 are formed to a form rising on the rear side of the front surface metallic part 12. A resin inner wall part 13 is formed in the region enclosed by the inner portion 14 and the outer portion 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air outlet having a metal surface in which a constituent part of an air outlet for inhaling expiration is formed of metal, and a method of manufacturing the same.

[0002]

2. Description of the Related Art For example, a chromatic harmonica has a built-in slide plate (Japanese Utility Model Publication No. 45-27256).
It has a configuration in which a blow port is arranged outside the slide plate.
Conventionally, the outlet is made of a cast product, and is made so that the slide plate can be smoothly operated between the harmonica body and the exhalation leak does not occur. However, there is a problem that it is actually difficult to produce a high-precision cast slide plate, and it must be expensive.

[0003] On the other hand, inexpensive harmonica has a plastic molding outlet made by resin molding. However, plastic molding blow outlets have problems of deformation and sink marks, and as the wall thickness increases, sink marks become particularly noticeable. In addition, there was a problem with the texture and the tactile sensation was not good.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned points, and an object thereof is to provide a blower which is inexpensive and has a good texture and tactile feel as compared with a blow-molded product. To provide.

Another object of the present invention is to make it possible to mass-produce a blow port having the same or higher accuracy and stable quality as the blow port of a cast product by a non-casting technique.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a method for manufacturing a vehicle, wherein a front metal part having an expiration air outlet is made of a pressed metal material, and the front metal part is blown. The inner part surrounding the mouth and the outer part located outside of the inner part are raised on the back side of the front metal part, and are almost surrounded by the rising inner part and the outer part The structure is such that the synthetic resin is integrally held in the separated area.

[0007] The blowout of the present invention having the above-described structure is formed by pressing a metal plate to form a rising inner portion surrounding the breathing blowout port and a similar outer portion located outside the inner portion. Forming a front metal part having a
It is preferable that the front metal part is set in a predetermined mold and subjected to insert molding to form a resin inner wall part in a region surrounded by an inner part and an outer part.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An air outlet having a metal surface according to the present invention is of a type in which a constituent part of an air outlet for inhaling expiration is formed of metal. The front metal part of the outlet becomes a part to be touched by the lips during performance, and thus has a great influence on the tactile sensation. The front metal part having the blow port is formed of a pressed product of a metal material, and the pressed product forming the front metal part has an inner portion surrounding the blow port and an outer portion of the inner portion. The outer part is formed by pressing. The inner part and the outer part are raised on the back side of the front metal part, and the synthetic resin is integrally held in a region surrounded by the raised inner part and the outer part.

[0009] The pressed product of the front metal part has a necessary and sufficient strength as a metal blow port, and has a feeling of quality and tactility comparable to that of a cast product. As the metal material for this purpose, a material that is harmless to the human body and has a feeling of quality and touch similar to that of a conventional casting material is selected.

[0010] The inner portion surrounding the blow-in port and the outer portion outside the blow-in port formed by press working hold the synthetic resin disposed in the region surrounded by them so as not to be separated from the front metal portion. There are various modes of holding the synthetic resin portion. Among them, the first is integration of metal and resin by insert molding, which is the most desirable mode. A second holding form is a form in which a synthetic resin part which has been injection-molded in advance is fitted into a region surrounded by an inner part and an outer part on the back side of the front metal part and held integrally. In any case, the synthetic resin portion is integrally held by the front metal portion by the rise of the inner portion and the outer portion.

In the case of the harmonica, a plurality of blowing ports are arranged at a small interval, and a partition wall for partitioning between the plurality of blowing ports is provided on a synthetic resin portion integrally held on the back side of the front metal portion. The length in the front-rear direction of the partition wall is the effective thickness of the blowout opening according to the present invention. The front metal portion has a structural strength against the external force due to the structure that gives thickness to the blowout opening according to the present invention and the rising structure of the inner portion and the outer portion, and can withstand heat shrinkage after molding. It will be. In addition, by integrating the metal and the resin, a texture, a weight, and the like close to those of a blow port made of a conventional cast product are obtained.

[0012] In the blowout having a metal surface configured as described above, after the front metal portion is formed by press working as described above, this is set in a predetermined mold and insert molding is performed to form a front metal part. The resin inner wall portion is integrally held in a region surrounded by the inner portion and the outer portion, for example, by injection molding. After finishing the front metal portion, it is desirable to perform a plating process before entering the insert molding process. This is because there is no need to perform a plating process after the front metal portion and the resin inner wall portion are integrated, and there is no danger that the resin on the inner wall portion will be deteriorated by the electrolytic solution. The plating in the present invention requires a film having practical strength, and therefore, chemical plating (electrolytic plating) is desirable.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows a front view of a blow port used for a chromatic harmonica. FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. The outlet 10 shown in FIG. 1 and the like is attached to the front of the harmonica H shown in FIGS.

The illustrated blowing port 10 is formed by pressing a front metal portion 12 including each component of a plurality of blowing ports 11 using a metal plate as a material. It has a configuration in which a resin inner wall portion 13 made of a synthetic resin is integrally held. An inner part 14 surrounding the blow-in port 11 of the front metal part 12 and an outer part 15 located outside the inner part 14 are formed in a rising shape on the back side. See FIG.

The front metal part 12 has a thick plating layer (not shown) on the surface in contact with the lips, and the resin inner wall part 13 has a partition wall 16 for partitioning the plurality of blow-in ports 11. The front-rear length of the partition wall 16 is substantially equal to the thickness d of the outlet 10 according to the present invention (FIG. 4), but the thickness of the partition wall itself is the same as the thickness of the peripheral portion 17 of the inlet 11. It is set within a range that does not cause sink marks or deformation.

As for the prototypes which have obtained good results, a brass plate having a thickness of 0.5 mm is pressed to have a trapezoidal cross section having a bottom of about 15 mm, a top of about 10 mm and a height of about 6 mm. Three types of short, medium, and long front metal parts 12 of 100 mm to 140 mm or more were formed. Front metal part 12
Was mirror-finished by buffing and nickel-plated by electrolytic plating to form a film having a thickness of 10 μm.

From the front side of the front metal part 12 to the inner part 14
The final finished product was set in a mold provided with a resin-filled cavity (cavity) having dimensions up to the tip of the outer part 15 and the tip of the outer portion 15, and ABS resin was injection-molded in the cavity. The thickness by this injection molding is shown by the dimension f in FIG. 5, and is set to about three times the thickness of the brass plate. The obtained blowout having a metal surface according to the present invention has a maximum warp of less than 0.2 mm in the longitudinal direction even with the longest type,
It was of high quality with no burrs and a metallic feel on the front. The inner side surface 18 of the resin inner wall portion 13 is made to slightly protrude from the inner side surface 19 of the front metal portion 12, so that it is convenient to attach the completed blow outlet 10 to the harmonica side.

[0018]

Since the present invention is constructed and operates as described above, it is possible to provide an outlet having excellent texture and touch feeling despite being inexpensive as compared with the outlet of a cast product. Was completed. Further, according to the present invention, it has become possible to mass-produce an inexpensive blowhole having a precision equal to or higher than that of a conventional casting.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an outlet having a metal surface according to the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a rear view of the one shown in FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is a plan view of the harmonica equipped with the outlet of FIG. 1;

FIG. 6 is a front view of the same.

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[Procedure amendment]

[Submission date] December 28, 1999 (1999.12.
28)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

In order to solve the above-mentioned problems, according to the present invention, a front metal part having an expiration air outlet is formed of a pressed metal material, and the front metal part has Surrounds the outlet on the back side
Almost along the inner part of the
It has a raised part on the back side and has an outer part
In this configuration, the synthetic resin is integrally held in a region substantially surrounded by the rising inner portion and the outer portion.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] The blowout of the present invention having the above-described structure is formed by pressing a metal plate to form a rising inner portion surrounding the breathing blowout and a ring- shaped space of the pressed product.
Almost along the inner part and the outer part rising in the same direction
Forming a front metal part having a resin inner wall in a region surrounded by an inner part and an outer part by setting the front metal part in a predetermined mold and performing insert molding. Is desirable.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An air outlet having a metal surface according to the present invention is of a type in which a constituent part of an air outlet for inhaling expiration is formed of metal. The front metal part of the outlet becomes a part to be touched by the lips during performance, and thus has a great influence on the tactile sensation. The front metal part having the above-mentioned blow port is formed of a pressed product of a metal material, and the pressed product constituting the front metal part has an inner portion surrounding the blow port and substantially along a ring of the front metal part. Standing on the back side
The rising outer portion is formed by press working.
Since the above-mentioned inner part and the outer part has a shape rising on the back side of the front metal portion, the synthetic resin is held together in a region surrounded by the inner portion and the outer portion.

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

Claims (4)

[Claims] 1. A blow-out port for blowing breath is a blow-out port formed of metal, and a front metal portion having the breath-flow blow-out port is made of a pressed metal material. The inner part surrounding the blow opening of the front metal part and the outer part located outside of the inner part are rising on the back side of the front metal part, and the rising inner part and the outer part An outlet having a metal surface, characterized in that a synthetic resin is integrally held in a region substantially surrounded by the portion. 2. A synthetic resin portion formed in the front metal portion and separating between a plurality of blow-off ports is provided on a synthetic resin portion extending from an inner portion of each blow-out port to an outer portion. A spout having the described metal surface. 3. A method for manufacturing a blow-out port, wherein a component of a blow-out port for blowing in expiration is formed of metal, wherein a metal plate is pressed to form a rising inner side surrounding the blow-in port for expiration. Forming a front metal portion having a portion and a similar outer portion located outside the inner portion, setting the front metal portion in a predetermined mold and insert-molding the inner metal portion and the outer metal portion. A method for manufacturing an outlet having a metal surface, wherein an inner wall portion of a resin is formed in a region surrounded by a side portion. 4. The method for producing an outlet having a metal surface according to claim 3, wherein the front metal portion is subjected to finishing after press working, followed by plating, and then to an insert molding step.