JPH0726601A - Water-spouting device and production thereof - Google Patents
Water-spouting device and production thereofInfo
- Publication number
- JPH0726601A JPH0726601A JP17284893A JP17284893A JPH0726601A JP H0726601 A JPH0726601 A JP H0726601A JP 17284893 A JP17284893 A JP 17284893A JP 17284893 A JP17284893 A JP 17284893A JP H0726601 A JPH0726601 A JP H0726601A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- water
- gas
- cavity
- water discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Domestic Plumbing Installations (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、吐水装置及びその製造
方法に関するものであり、特に、合成樹脂にて全体を一
体形成され、水洗トイレのロータンク用吐水口またはシ
ャワーヘッド等に適用される吐水装置及びその製造方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water discharge device and a method for manufacturing the same, and in particular, a water discharge device which is integrally formed of synthetic resin and is applied to a low tank water discharge port of a flush toilet or a shower head. The present invention relates to a device and a manufacturing method thereof.
【0002】[0002]
【従来の技術】従来のこの種の吐水装置として、図8及
び図9に示す技術を挙げることができる。2. Description of the Related Art As a conventional water discharge device of this type, there is a technique shown in FIGS.
【0003】図7は水洗トイレのロータンクに吐水装置
を取付けた状態を示す斜視図である。また、図8は従来
の吐水装置を示す断面図、図9は従来の吐水装置を示す
背面図である。FIG. 7 is a perspective view showing a state in which a water discharger is attached to a low tank of a flush toilet. 8 is a cross-sectional view showing a conventional water discharger, and FIG. 9 is a rear view showing the conventional water discharger.
【0004】図7において、水洗トイレのロータンク1
に取付けられる給水用の吐水装置50は、一般に、ステ
ンレス等の耐食性を有する金属により形成されるが、最
近は、コスト低減等の要請から、合成樹脂により形成す
ることが提案されている。かかる合成樹脂製の吐水装置
50は、従来は、射出成形により所望形状に形成されて
いる。In FIG. 7, a low tank 1 of a flush toilet.
The water discharger 50 for water supply attached to is generally formed of a metal having corrosion resistance such as stainless steel, but recently, it has been proposed to form a synthetic resin in order to reduce costs. Conventionally, the water discharge device 50 made of synthetic resin is formed into a desired shape by injection molding.
【0005】例えば、図8及び図9において、吐水装置
50は、吐水部51と、接続部52とキャップ53とを
具備している。吐水部51は、ロータンク1に垂立配置
される垂立部51aと、垂立部51aの上端から側方に
傾斜して延びる傾斜部51bより屈曲筒状に形成され、
傾斜部51bの先端部下面に吐水孔51cを設けてい
る。また、吐水部51は、垂立部51aの上端部の前記
傾斜部51bと反対側側面にキャップ53を装着する装
着孔51dを設けるとともに、垂立部51aの下端部に
拡径部51eを形成している。そして、前記キャップ5
3は吐水部51の装着孔51dに接着固定されている。
一方、前記接続部52は円筒状をなし、その上端部を前
記吐水部51の下端拡径部51eの内周面に密嵌接着さ
れる密嵌部52aとするとともに、下端部外周にロータ
ンク1内に配設される配水管2先端の雌ねじに螺合する
雄螺子52bを螺刻している。そして、接続部52は、
密嵌部52aを吐水部51の拡径部51eに密嵌して接
着固定されるとともに、ロータンク1に雄螺子52bを
介して螺合固定されて配水管2に接続され、配水管2と
連通するようになっている。これにより、吐水装置50
をロータンク1に取付けるよう構成されている。なお、
吐水装置50の吐水部51の吐水孔51cには、吐水の
整流を行なう整流板54が挿着されている。For example, in FIGS. 8 and 9, the water discharge device 50 includes a water discharge portion 51, a connecting portion 52 and a cap 53. The water discharge portion 51 is formed in a bent tubular shape by a vertical portion 51a vertically arranged in the raw tank 1 and a sloped portion 51b extending laterally from the upper end of the vertical portion 51a.
A water discharge hole 51c is provided on the lower surface of the tip of the inclined portion 51b. Further, the water discharge part 51 is provided with a mounting hole 51d for mounting the cap 53 on the side surface of the upper end part of the upright part 51a opposite to the inclined part 51b, and at the lower end part of the upright part 51a, an enlarged diameter part 51e is formed. is doing. And the cap 5
3 is adhered and fixed to the mounting hole 51d of the water discharge part 51.
On the other hand, the connecting portion 52 has a cylindrical shape, and the upper end portion thereof is a close fitting portion 52a which is tightly fitted and adhered to the inner peripheral surface of the lower diameter expanding portion 51e of the water discharge portion 51, and the low tank 1 is provided on the outer periphery of the lower end portion. A male screw 52b that is screwed into a female screw at the tip of the water pipe 2 disposed inside is threaded. Then, the connecting portion 52 is
The tight fitting portion 52a is tightly fitted to the expanded diameter portion 51e of the water discharge portion 51 to be adhesively fixed, and is also screwed and fixed to the low tank 1 via the male screw 52b to be connected to the water distribution pipe 2 to communicate with the water distribution pipe 2. It is supposed to do. Thereby, the water discharge device 50
Is attached to the raw tank 1. In addition,
The water discharge hole 51c of the water discharger 51 of the water discharge device 50 is fitted with a flow straightening plate 54 that straightens the water discharge.
【0006】次に、上記のように構成された従来の吐水
装置50の製造方法を説明する。Next, a method of manufacturing the conventional water discharger 50 configured as described above will be described.
【0007】図8及び図9に示す形状の吐水装置50を
製造するには、まず、吐水部51の垂立部51aの内面
形状に対応する形状の第1のスライド型と、傾斜部51
bの内面形状に対応する形状の第2のスライド型とを使
用して、吐水部51の射出成形を行なう。即ち、吐水部
51成形用の金型内に第1のスライド型及び第2のスラ
イド型をインサートして所定の合成樹脂を射出し、型開
きした後、第1のスライド型を吐水部51の垂立部51
aの下端開口から抜き取るとともに、第2のスライド型
を垂立部51a上端部の装着孔51dから抜き取る。一
方、接続部52及びキャップ53を所定の合成樹脂によ
りそれぞれ別個に射出成形し、吐水部51の完成後に、
それぞれ装着孔51d及び拡径部51e内周面に接着固
定する。これにより、図8及び図9に示す吐水装置50
が完成する。In order to manufacture the water discharger 50 having the shape shown in FIGS. 8 and 9, first, the first slide die having a shape corresponding to the inner surface shape of the upright portion 51a of the water discharge portion 51, and the inclined portion 51.
Injection molding of the water discharge part 51 is performed using a second slide mold having a shape corresponding to the inner surface shape of b. That is, the first slide mold and the second slide mold are inserted into a mold for molding the water discharge part 51, a predetermined synthetic resin is injected, the mold is opened, and then the first slide mold is moved to the water discharge part 51. Vertical section 51
The second slide mold is pulled out from the lower end opening of a and the mounting hole 51d at the upper end of the upright portion 51a. On the other hand, the connecting portion 52 and the cap 53 are separately injection molded from a predetermined synthetic resin, and after the water discharge portion 51 is completed,
Each of them is adhered and fixed to the mounting hole 51d and the inner peripheral surface of the expanded diameter portion 51e. Thereby, the water discharge device 50 shown in FIG. 8 and FIG.
Is completed.
【0008】[0008]
【発明が解決しようとする課題】従来の吐水装置50
は、上記のように構成されているから、部品点数が、吐
水部51、接続部52及びキャップ53の3点と多く、
それぞれの部品の成形のための金型を必要とする。ま
た、吐水部51への接続部52の密嵌及び接着並びにキ
ャップ53の嵌合及び接着作業が必要となるとともに、
吐水部51の拡径部51eと接続部52の密嵌部52a
との間及び吐水部51の装着孔51dとキャップ53と
の間での寸法精度の確保及び接着強度の確保が必要とな
り、それらの作業が煩雑となって生産効率を低下する可
能性がある。更に、キャップ53が外部から視認される
ため、吐水装置50全体の外観品質を低下する可能性も
ある。DISCLOSURE OF THE INVENTION Conventional water discharge device 50
Is configured as described above, the number of parts is as many as three, that is, the water discharge part 51, the connection part 52, and the cap 53,
A mold is required for molding each part. Further, it is necessary to tightly fit and bond the connection part 52 to the water discharge part 51 and fit and bond the cap 53, and
The expanded diameter portion 51e of the water discharge portion 51 and the tight fitting portion 52a of the connection portion 52
It is necessary to secure dimensional accuracy and adhesive strength between the cap 51 and the mounting hole 51d of the water discharge part 51 and the cap 53, which may complicate the work and reduce the production efficiency. Furthermore, since the cap 53 is visually recognized from the outside, the appearance quality of the water discharge device 50 as a whole may be deteriorated.
【0009】また、従来の吐水装置50を製造するに
は、吐水部51、接続部52及びキャップ53をそれぞ
れ別個に射出成形することとなり、製造工程が増加して
生産効率の低下、ひいてはコストの上昇を招くおそれが
ある。更に、吐水部51が屈曲形状をなすため、吐水部
51の射出成形に第1のスライド型及び第2のスライド
型という2つのスライド型を使用する必要があるが、ス
ライド型の使用は相当のコスト上昇を招くことから、コ
スト低減の点で改善すべき余地がある。加えて、吐水部
51の傾斜部51bから第2のスライド型を抜き取るた
めの孔である装着孔51dを吐水部51に設ける必要が
あるため、その装着孔51dをキャップ53で遮蔽する
作業が必要となり、上記のように、生産効率の低下、コ
スト上昇或いは外観品質の低下を招く可能性がある。一
方、吐水部51の形状を複雑化するには、それに対応し
てスライド型の種類及び数を増加する必要があり、か
つ、コスト等の点からスライド型の増加には制限がある
ことから、吐水装置50の主形状である吐水部51の形
状の自由度も低い。特に、吐水部51を複数方向に湾曲
した形状とする場合、その成形は困難である。Further, in order to manufacture the conventional water discharger 50, the water discharger 51, the connecting portion 52, and the cap 53 are separately injection-molded, so that the number of manufacturing steps increases, the production efficiency decreases, and the cost increases. May cause rise. Further, since the water discharger 51 has a bent shape, it is necessary to use two slide molds, a first slide mold and a second slide mold, for injection molding of the water discharger 51, but use of the slide mold is considerable. There is room for improvement in terms of cost reduction, as it will increase costs. In addition, since it is necessary to provide the water discharge part 51 with a mounting hole 51d that is a hole for removing the second slide die from the inclined part 51b of the water discharge part 51, it is necessary to shield the mounting hole 51d with the cap 53. Therefore, as described above, there is a possibility that production efficiency may be reduced, cost may be increased, or appearance quality may be reduced. On the other hand, in order to complicate the shape of the water discharge part 51, it is necessary to increase the number and type of slide molds correspondingly, and there is a limit to the increase of slide molds in terms of cost, etc. The degree of freedom of the shape of the water discharger 51, which is the main shape of the water discharger 50, is also low. In particular, when the water discharge portion 51 is curved in a plurality of directions, its molding is difficult.
【0010】そこで、本発明は、全体を合成樹脂により
一体成形でき、かつ、スライド型を不要として、コスト
低減、生産効率向上及び外観品質向上を図ることができ
る吐水装置及びその製造方法の提供を課題とするもので
ある。Therefore, the present invention provides a water spouting device and a method for manufacturing the same, which can be integrally molded entirely of synthetic resin and which can eliminate costs for a slide mold and can reduce costs, improve production efficiency and improve appearance quality. This is an issue.
【0011】[0011]
【課題を解決するための手段】請求項1の発明にかかる
吐水装置は、配水管に接続自在とされ、配水管と連通す
る筒状をなす接続部と、前記接続部に延設され、前記接
続部と連通する筒状をなす案内部と、前記案内部に所定
の曲げ角度で延設され、前記案内部と連通するととも
に、先端に吐水孔を有する筒状をなす給水部とを、所定
の合成樹脂により一体形成したものである。According to another aspect of the present invention, there is provided a water discharge device which is connectable to a water pipe and has a cylindrical connecting portion which communicates with the water pipe and which is extended to the connecting portion. A tubular guide portion that communicates with the connection portion, and a tubular water supply portion that extends in the guide portion at a predetermined bending angle and that communicates with the guide portion and that has a water discharge hole at the tip are provided in a predetermined manner. It is integrally formed of the synthetic resin.
【0012】請求項2の発明にかかる吐水装置の製造方
法は、所定方向に延設した空間状のキャビティと、前記
キャビティの延設方向一端に連通するガス吹込口と、前
記キャビティの延設方向他端に連通する所定空間状のガ
ス吹出部とを有する金型を使用して、樹脂注入工程にお
いて、前記キャビティ内に溶融合成樹脂を注入し、ガス
注入工程において、前記金型のガス吹込口から前記キャ
ビティ内の溶融合成樹脂内部にガスを注入し、ガス圧に
より前記溶融合成樹脂をキャビティ表面に内部から付勢
圧接してキャビティ形状に対応する形状に保持するとと
もに、前記ガス吹込口から前記ガス吹出部内に流入させ
て、前記溶融合成樹脂内に前記ガス吹込口から前記ガス
吹出部へと延びる給水通路を形成し、切断工程におい
て、冷却固化した合成樹脂の前記ガス吹込口側及び前記
ガス吹出部側を切断して前記給水通路の延設方向両端を
開放するものである。According to a second aspect of the present invention, there is provided a water discharge device manufacturing method, wherein a space-like cavity extending in a predetermined direction, a gas inlet communicating with one end of the cavity in the extending direction, and an extending direction of the cavity. Using a mold having a predetermined space-like gas blowing portion that communicates with the other end, in the resin injecting step, the molten synthetic resin is injected into the cavity, and in the gas injecting step, the gas injecting port of the die is used. A gas is injected into the molten synthetic resin from the inside of the cavity, and the molten synthetic resin is pressed against the cavity surface from the inside by gas pressure to hold the molten synthetic resin in a shape corresponding to the cavity shape. A water supply passage is formed in the molten synthetic resin, the water supply passage extending from the gas inlet to the gas outlet, and is cooled and solidified in the cutting step. Said gas injection port side and the gas outlet side of the resin by cutting is to open the extending direction ends of the water supply passage.
【0013】なお、樹脂注入工程において、キャビティ
内に溶融合成樹脂をフルショットで注入した後、ガス圧
にて溶融合成樹脂をガス吹出部内に注入することもでき
る。In the resin injection step, it is possible to inject the molten synthetic resin into the cavity in a full shot and then inject the molten synthetic resin into the gas blowing portion by gas pressure.
【0014】[0014]
【作用】請求項1の発明においては、吐水装置を配水管
に接続部を介して接続し、給水を行なうと、給水は接続
部及び案内部を経て給水部の吐水孔から外部に吐出され
る。このとき、接続部、案内部及び給水部は全体を同一
の合成樹脂により一体成形されているため、吐水装置に
おける給水の通過経路全体が単一、かつ、均質の成形品
となる。According to the invention of claim 1, when the water spouting device is connected to the water distribution pipe through the connection part to supply water, the water supply is discharged to the outside from the spouting hole of the water supply part through the connection part and the guide part. . At this time, the connection part, the guide part, and the water supply part are integrally formed of the same synthetic resin, so that the entire water supply passage in the water discharge device is a single and homogeneous molded product.
【0015】請求項2の発明においては、樹脂注入工程
においてキャビティ内に注入された溶融合成樹脂は、ガ
ス注入工程において内部に注入されるガス圧により、内
部に空間を形成して外方に膨張し、キャビティ表面に圧
接されてキャビティ形状と同一外形に付形される。ま
た、溶融合成樹脂内は、ガス圧によりガス吹込口からガ
ス吹出部へと流入し、ガス吹込口からガス吹出部へと連
通する給水通路を形成する。そして、切断工程で冷却固
化した合成樹脂のガス吹込口側及びガス吹出部側を切断
して、給水通路の延設方向両端を開放することにより、
所定方向に延びるとともに、延設方向両端に開口を有す
る筒状の吐水装置が、所定の合成樹脂より一体成形され
る。よって、吐水装置の一端の開口を配水管に接続する
ことにより、他端開口からの吐水が自在となる。一方、
吐水装置が多段湾曲形状等の複雑な形状をなす場合で
も、ガス吹込口からのガスが、キャビティの延設方向に
沿って溶融合成樹脂内をガス吹出部へと流れ、溶融合成
樹脂内に延設方向に沿って延びる内部空間としての給水
通路を形成する。According to the second aspect of the invention, the molten synthetic resin injected into the cavity in the resin injection step forms a space inside and expands outward due to the gas pressure injected into the cavity in the gas injection step. Then, it is pressed against the surface of the cavity and shaped into the same outer shape as the cavity. In the molten synthetic resin, a gas pressure causes gas to flow from the gas inlet to the gas outlet to form a water supply passage that communicates from the gas inlet to the gas outlet. Then, by cutting the gas inlet side and the gas outlet side of the synthetic resin cooled and solidified in the cutting step, by opening both ends in the extending direction of the water supply passage,
A tubular water discharger that extends in a predetermined direction and has openings at both ends in the extending direction is integrally molded of a predetermined synthetic resin. Therefore, by connecting the opening at one end of the water discharger to the water distribution pipe, water can be freely discharged from the opening at the other end. on the other hand,
Even if the water spouting device has a complicated shape such as a multi-step curved shape, the gas from the gas inlet flows through the molten synthetic resin to the gas outlet along the extending direction of the cavity and then spreads into the molten synthetic resin. A water supply passage is formed as an internal space extending along the installation direction.
【0016】[0016]
【実施例】以下、本発明の実施例を説明する。EXAMPLES Examples of the present invention will be described below.
【0017】図1は本発明の第一実施例の吐水装置を示
す断面図、図2は本発明の第一実施例の吐水装置を示す
背面図である。図3は本発明の第一実施例の吐水装置の
製造方法を示す概略工程図であり、(a)は樹脂注入工
程を、(b)はガス注入工程の途中を、(c)はガス注
入工程の終了時を示す。図4は本発明の第一実施例の吐
水装置のガス吹込口及びガス吹出部を切断した状態を示
す断面図である。FIG. 1 is a sectional view showing a water discharger according to the first embodiment of the present invention, and FIG. 2 is a rear view showing the water discharger according to the first embodiment of the present invention. 3A and 3B are schematic process diagrams showing a method for manufacturing a water discharger according to a first embodiment of the present invention, where FIG. 3A is a resin injection process, FIG. 3B is a gas injection process, and FIG. Indicates the end of the process. FIG. 4 is a sectional view showing a state in which the gas inlet and the gas outlet of the water discharger of the first embodiment of the present invention are cut.
【0018】なお、図中、従来例と同一符号及び同一記
号は、従来例の構成部分と同一または相当部分を示すも
のであるから、ここでは、重複する説明を省略する。In the drawings, the same reference numerals and symbols as those of the conventional example indicate the same or corresponding parts as those of the conventional example, and therefore, duplicated description will be omitted here.
【0019】図において、本実施例の吐水装置10は、
水洗トイレのロータンク1の吐水口に具体化され、ガス
中空成形としてのガスインジェクション成形を利用し
て、接続部11、案内部としての垂立部12及び給水部
としての傾斜部13を、所定の合成樹脂により屈曲筒状
に一体成形したものである。前記接続部11は、円筒状
をなすとともに、ロータンク1内の配水管2先端の雌ね
じに螺合する雄螺子を外周に螺刻し、配水管2に接続自
在とされて、配水管2と連通するようになっている。前
記垂立部12は、接続部11と同軸方向に延設して一体
形成されて接続部11と連通する筒状をなし、接続部1
1をロータンク1内の配水管2に接続固定することによ
り、ロータンク1に垂立配置されるようになっている。
また、前記傾斜部13は、垂立部12の上端から側方に
所定の曲げ角度で傾斜して延びるよう垂立部12に一体
形成され、かつ、垂立部12と連通する筒状をなしてい
る。傾斜部13の先端部下面には吐水孔13aが設けら
れている。前記接続部11、垂立部12及び傾斜部13
の各内周面並びに傾斜部13の吐水孔13aにより、配
水管2からの給水をロータンク1の吐水受部1aに供給
する給水通路15が形成されている。なお、図示はしな
いが、吐水装置10の給水部13の吐水孔13aには、
従来例と同様、吐水の整流を行なう整流板54が挿着さ
れる。In the figure, the water discharge device 10 of this embodiment is
The connection part 11, the upright part 12 as a guide part, and the inclined part 13 as a water supply part, which are embodied in the spout of the low tank 1 of the flush toilet, are formed by using gas injection molding as gas hollow molding. It is made of synthetic resin and integrally molded into a bent tubular shape. The connecting portion 11 has a cylindrical shape, and has a male screw threaded on a female screw at the end of the water pipe 2 in the low tank 1 which is threaded on the outer periphery so as to be connectable to the water pipe 2 and communicate with the water pipe 2. It is supposed to do. The upright portion 12 extends in the same direction as the connecting portion 11 and is integrally formed to form a tubular shape that communicates with the connecting portion 11.
By connecting and fixing 1 to the water distribution pipe 2 in the raw tank 1, it is arranged to stand upright in the raw tank 1.
The inclined portion 13 is integrally formed with the upright portion 12 so as to extend laterally from the upper end of the upright portion 12 at a predetermined bending angle, and has a tubular shape that communicates with the upright portion 12. ing. A water discharge hole 13a is provided on the lower surface of the tip of the inclined portion 13. The connection portion 11, the upright portion 12, and the inclined portion 13
A water supply passage 15 for supplying the water supplied from the water distribution pipe 2 to the water discharge receiving portion 1a of the low tank 1 is formed by each inner peripheral surface and the water discharge hole 13a of the inclined portion 13. Although not shown, in the water discharge hole 13a of the water supply unit 13 of the water discharge device 10,
Similar to the conventional example, a rectifying plate 54 for rectifying the discharged water is inserted.
【0020】上記のように構成された吐水装置10は、
ロータンク1内の配水管2の雌ねじに接続部11の雄螺
子を螺入することにより、接続部11を介してロータン
ク1の上面の吐水受部1aの後方所定位置に固定され
る。そして、配水管2を介して吐水装置10に給水を行
なうと、給水は接続部11及び垂立部12を経て傾斜部
13の吐水口13aからロータンク1の吐水受部1aに
吐出され、ロータンク1内に給水を行なうことができ
る。このとき、接続部11、垂立部12及び傾斜部13
は全体を同一の合成樹脂により一体成形されているた
め、吐水装置10における給水の通過経路全体が単一、
かつ、均質の成形品となる。The water discharge device 10 constructed as described above is
By screwing the male screw of the connection portion 11 into the female screw of the water distribution pipe 2 in the low tank 1, it is fixed to a predetermined position behind the water discharge receiving portion 1 a on the upper surface of the low tank 1 via the connection portion 11. Then, when water is supplied to the water discharger 10 via the water distribution pipe 2, the water is discharged from the water discharge port 13a of the inclined portion 13 to the water discharge receiver 1a of the low tank 1 via the connection portion 11 and the upright portion 12, and the low tank 1 Water can be supplied inside. At this time, the connecting portion 11, the upright portion 12, and the inclined portion 13
Is integrally formed of the same synthetic resin, the entire water supply passage in the water discharge device 10 is single,
And it becomes a homogeneous molded product.
【0021】次に、上記のように構成された本実施例の
吐水装置10の製造方法を図3及び図4を参照して説明
する。Next, a method of manufacturing the water discharger 10 of the present embodiment having the above-mentioned structure will be described with reference to FIGS. 3 and 4.
【0022】本実施例の吐水装置10は、図3に示すよ
うに、キャビティ21と、ガス吹込口22と、ガス吹出
部23とを有する金型を使用して、所定の合成樹脂を公
知のガスインジェクション成形法により一体成形して得
られる。前記金型のキャビティ21は、吐水装置10の
外形と同一の、所定方向に延設した屈曲空間状をなし、
その表面により接続部11、垂立部12及び傾斜部13
の付形を行なう。また、ガス吹込口22は、キャビティ
21の延設方向一端(傾斜部13側)の下面の吐水孔1
3aに対応する位置に連通して吐水孔13aの軸心方向
に延びるよう配置され、ガス注入ノズル(図示略)から
のガスGを、ガス吹込口22を介してキャビティ21内
の溶融合成樹脂Rに注入自在となっている。更に、ガス
吹出部23は、キャビティ21の延設方向他端(接続部
11側)に連通して垂立部12及び接続部11の軸心方
向に延びるよう配置され、かつ、接続部11より大径の
所定空間とされている。なお、前記合成樹脂Rは、耐熱
性を有するものを使用し、かつ、ガスGの圧力によりキ
ャビティ21内を円滑に流動可能なよう、粘性に一定の
制限がある。かかる合成樹脂Rとしては、例えば、AB
S樹脂またはポリプロピレン(PP)樹脂等を使用でき
る。As shown in FIG. 3, the water discharger 10 of this embodiment uses a mold having a cavity 21, a gas inlet 22 and a gas outlet 23, and uses a known synthetic resin. It is obtained by integrally molding by a gas injection molding method. The cavity 21 of the mold has the same shape as the outer shape of the water discharge device 10 and has a bent space shape extending in a predetermined direction.
Due to its surface, the connecting portion 11, the upright portion 12, and the inclined portion 13
Shape. Further, the gas injection port 22 is the water discharge hole 1 on the lower surface at one end (on the inclined portion 13 side) in the extending direction of the cavity 21.
The gas G from a gas injection nozzle (not shown) is arranged so as to extend in the axial direction of the water discharge hole 13a so as to communicate with the position corresponding to 3a, and the molten synthetic resin R in the cavity 21 is passed through the gas injection port 22. It can be freely injected into. Further, the gas blowout portion 23 is arranged so as to communicate with the other end (on the side of the connection portion 11) in the extending direction of the cavity 21 and extend in the axial direction of the upright portion 12 and the connection portion 11, and from the connection portion 11. It is a large-diameter predetermined space. It should be noted that the synthetic resin R is one having heat resistance, and the viscosity thereof has a certain limit so that it can smoothly flow in the cavity 21 by the pressure of the gas G. Examples of such synthetic resin R include AB
S resin or polypropylene (PP) resin can be used.
【0023】かかる金型を使用してガスインジェクショ
ン成形を行なうには、まず、図3(a)示すように、樹
脂注入工程において、前記キャビティ21内に溶融合成
樹脂Rをショートショットで注入する。次に、図3
(b)に示すように、ガス注入工程において、前記金型
のガス吹込口22から前記キャビティ21の溶融合成樹
脂R内部にガス(不活性ガスとしての窒素ガス)Gを注
入する。すると、ガスGが、溶融合成樹脂Rに進入して
溶融合成樹脂R内部に空間を形成し、溶融合成樹脂Rを
キャビティ21表面に向かって内部から付勢して膨張さ
せ、キャビティ21表面に圧接させる。また、溶融合成
樹脂R内に注入されるガスGの量が増加すると、図3
(b)に示すように、溶融合成樹脂Rがキャビティ21
からガス吹出部23へと流動及び流入する。そして、図
3(c)に示すように、溶融合成樹脂Rが、ガス吹出部
23全体に流入すると、溶融合成樹脂Rのそれ以上の流
動は停止され、ガスGは溶融合成樹脂Rをキャビティ2
1の表面に圧接状態で保圧し、溶融合成樹脂Rをキャビ
ティ21形状に対応する形状、即ち、第一実施例の吐水
装置10の形状に保持する。一方、ガス吹込口22から
溶融合成樹脂R内に注入したガスG圧により、溶融合成
樹脂Rをガス吹込口22からガス吹出部23内に流入さ
せるときに、ガス吹込口22からガス吹出口23へと連
通して延びる給水通路15が形成される。その後、溶融
合成樹脂Rの冷却固化を行なうことにより、吐水装置1
0が、その両端にガス吹込口22に対応する筒状の合成
樹脂及びガス吹出部23に対応する形状の合成樹脂を一
体形成した状態に成形される。次いで、金型を型開きし
て、図4に示すように、切断工程において、合成樹脂の
ガス吹込口部分25を切断して吐水孔13aを形成する
とともに、合成樹脂のガス吹出部部分26を切断して、
給水通路15のガス吹出部23側である接続部11下端
を開放する。これにより、図1及び図4に示すように、
所定方向に延びるとともに、延設方向両端に開口を有す
る筒状の吐水装置10を、同一合成樹脂により一体成形
することができる。In order to carry out gas injection molding using such a mold, first, as shown in FIG. 3A, in a resin injection step, molten synthetic resin R is injected into the cavity 21 by a short shot. Next, FIG.
As shown in (b), in the gas injection step, a gas (nitrogen gas as an inert gas) G is injected into the molten synthetic resin R in the cavity 21 from the gas injection port 22 of the mold. Then, the gas G enters the molten synthetic resin R to form a space inside the molten synthetic resin R, urges the molten synthetic resin R from the inside toward the surface of the cavity 21 to expand, and press-contacts the surface of the cavity 21. Let In addition, when the amount of the gas G injected into the molten synthetic resin R increases, as shown in FIG.
As shown in (b), the molten synthetic resin R is
Flows and flows into the gas outlet 23. Then, as shown in FIG. 3C, when the molten synthetic resin R flows into the entire gas blowing portion 23, further flow of the molten synthetic resin R is stopped, and the gas G causes the molten synthetic resin R to flow into the cavity 2
The molten synthetic resin R is held in a shape corresponding to the shape of the cavity 21, that is, the shape of the water discharger 10 of the first embodiment by keeping pressure on the surface of No. 1 in a pressed state. On the other hand, when the molten synthetic resin R is caused to flow from the gas blowing port 22 into the gas blowing portion 23 by the gas G pressure injected from the gas blowing port 22 into the molten synthetic resin R, the gas blowing port 22 passes through the gas blowing port 23. A water supply passage 15 that communicates with and extends to is formed. After that, the molten synthetic resin R is cooled and solidified, whereby the water discharger 1
0 is molded into a state in which a cylindrical synthetic resin corresponding to the gas blowing port 22 and a synthetic resin having a shape corresponding to the gas blowing portion 23 are integrally formed at both ends thereof. Next, as shown in FIG. 4, the mold is opened, and in the cutting step, the synthetic resin gas blowing port portion 25 is cut to form the water discharge hole 13a, and the synthetic resin gas blowing portion portion 26 is cut. Disconnect
The lower end of the connecting portion 11 on the gas outlet portion 23 side of the water supply passage 15 is opened. As a result, as shown in FIGS. 1 and 4,
The tubular water discharger 10 that extends in the predetermined direction and has openings at both ends in the extending direction can be integrally molded of the same synthetic resin.
【0024】なお、上記においては、材料の歩留を向上
するため、ガス吹出部23内に流入する合成樹脂が可能
な限り薄肉で、かつ、少量となるよう、注入する溶融合
成樹脂R量及びガス吹出部23の寸法及び体積等を調整
する。In the above, in order to improve the material yield, the amount of the molten synthetic resin R to be injected and the amount of the synthetic resin R to be injected are controlled so that the synthetic resin flowing into the gas blowing portion 23 is as thin as possible and the amount thereof is small. The size, volume, etc. of the gas blowing portion 23 are adjusted.
【0025】次に、本発明による別の実施例を以下に説
明する。なお、各実施例においては上記第一実施例との
相違点のみを説明し、上記第一実施例と同一の構成につ
いては図面に同一符号を付してその説明を省略する。Next, another embodiment according to the present invention will be described below. Only the differences from the first embodiment will be described in each embodiment, and the same components as those in the first embodiment will be designated by the same reference numerals in the drawings and will not be described.
【0026】図5は本発明の第二実施例の吐水装置を示
す断面図である。FIG. 5 is a sectional view showing a water discharger according to the second embodiment of the present invention.
【0027】図5において、本実施例の吐水装置30
は、第一実施例と同様、水洗トイレのロータンク1の吐
水口に具体化され、ガスインジェクション成形を利用し
て、接続部31、案内部としての垂立部32及び給水部
としての傾斜部33を、所定の合成樹脂により屈曲筒状
に一体成形したものであるが、垂立部32をロータンク
1後方に若干傾斜する湾曲筒状とし、全体に丸みを持た
せた点において主に第一実施例の吐水装置10と異な
る。なお、接続部31及び傾斜部33の構成は、第一実
施例の吐水装置10とほぼ同様であり、接続部31をロ
ータンク1内の配水管2に接続固定することにより、ロ
ータンク1に吐水装置30を配置するようになってい
る。また、前記傾斜部33の先端部下面には、第一実施
例と同様、吐水孔33aが設けられている。In FIG. 5, the water discharger 30 of the present embodiment.
Is embodied in the spout of the low tank 1 of the flush toilet, as in the first embodiment, and utilizes gas injection molding to utilize the connection part 31, the upright part 32 as a guide part, and the inclined part 33 as a water supply part. Is formed integrally with a predetermined synthetic resin into a bent tubular shape, but the upright portion 32 is formed into a curved tubular shape that is slightly inclined rearward of the low tank 1 and mainly has a roundness in the first embodiment. It is different from the example water discharger 10. The configurations of the connection portion 31 and the inclined portion 33 are almost the same as those of the water discharger 10 of the first embodiment, and by connecting and fixing the connection portion 31 to the water distribution pipe 2 in the low tank 1, the water discharger is attached to the low tank 1. 30 are arranged. A water discharge hole 33a is provided on the lower surface of the tip of the inclined portion 33, as in the first embodiment.
【0028】上記のように構成された吐水装置30は、
第一実施例の吐水装置10と同様に作用し、同様の効果
を奏する。また、その製造方法も第一実施例と同様であ
り、金型のキャビティ形状等が、吐水装置30の形状に
対応して異なるのみである。The water discharger 30 constructed as described above is
The water discharger 10 of the first embodiment operates in the same manner and has the same effect. The manufacturing method thereof is also the same as that of the first embodiment, and the cavity shape and the like of the mold differ only in accordance with the shape of the water discharger 30.
【0029】図6は本発明の第三実施例の吐水装置を示
す断面図である。FIG. 6 is a sectional view showing a water discharger according to the third embodiment of the present invention.
【0030】図6において、本実施例の吐水装置40
は、シャワーヘッドに具体化される点において上記第一
及び第二実施例と異なる。吐水装置40は、ガスインジ
ェクション成形を利用して、配水管としてのシャワーホ
ース(図示略)先端に螺合して接続される接続部41、
案内部42及び給水部43を、所定の合成樹脂により屈
曲筒状に一体成形したものである。また、給水部43の
先端面には吐水孔43aが設けられている。In FIG. 6, the water discharge device 40 of this embodiment is shown.
Is different from the first and second embodiments in that it is embodied as a shower head. The water spouting device 40 utilizes gas injection molding, and is connected to a shower hose (not shown) as a water distribution pipe by screwing and connecting with a connecting portion 41.
The guide part 42 and the water supply part 43 are integrally molded in a bent cylindrical shape from a predetermined synthetic resin. Further, a water discharge hole 43a is provided on the front end surface of the water supply unit 43.
【0031】上記のように構成された吐水装置40は、
第一及び第二実施例の吐水装置10,30と同様に作用
し、同様の効果を奏する。また、その製造方法も第一及
び第二実施例と同様であり、金型のキャビティ形状等
が、吐水装置40の形状に対応して異なるのみである。The water discharge device 40 constructed as described above is
The water discharge devices 10 and 30 of the first and second embodiments operate in the same manner and have the same effect. The manufacturing method is also the same as in the first and second embodiments, and the cavity shape of the mold and the like differ only in accordance with the shape of the water discharger 40.
【0032】このように、上記実施例の吐水装置10,
30,40は、配水管2に螺合して接続自在とされ、配
水管2と連通する円筒状をなす合成樹脂製の接続部1
1,31,41と、前記合成樹脂により接続部11,3
1,41の上端に同軸上に延設して一体形成され、接続
部11,31,41と連通する筒状をなす案内部12,
32,42と、前記合成樹脂により案内部12,32,
42上端に所定の曲げ角度で延設して一体形成され、案
内部12,32,42と連通するとともに、先端に吐水
孔13a,33a,43aを開口形成した筒状をなす給
水部13,33,43とを具備する。As described above, the water discharger 10 of the above embodiment,
Numerals 30 and 40 are screwed to the water distribution pipe 2 so that they can be freely connected to each other.
1, 31, 41 and the connecting portions 11, 3 made of the synthetic resin
A cylindrical guide portion 12, which is coaxially extended to the upper ends of the terminals 1, 41 and is integrally formed, and which communicates with the connection portions 11, 31, 41.
32, 42 and the guide portions 12, 32, made of the synthetic resin.
42 A cylindrical water supply part 13, 33 which is integrally formed by being extended at a predetermined bending angle at the upper end of 42, communicates with the guide parts 12, 32, 42, and has water discharge holes 13a, 33a, 43a formed at the tips thereof. , 43.
【0033】したがって、上記実施例は、吐水装置1
0,30,40を配水管2に接続部11,31,41を
介して接続し、給水を行なうと、給水は接続部11,3
1,41及び案内部12,32,42を経て給水部1
3,33,43の吐水孔13a,33a,43aから外
部に吐出される。このとき、接続部11,31,41、
案内部12,32,42及び給水部13,33,43は
全体を同一の合成樹脂により一体成形されているため、
吐水装置10,30,40における給水の通過経路全体
が単一、かつ、均質の成形品となる。その結果、各部品
相互間の組付境界部からの水洩れを生じることもなく、
製品品質を向上することができるとともに、吐水装置全
体の外観が単一で均質なものとなるため、外観品質を良
好なものとすることができる。一方、吐水装置10,3
0,40の成形のための金型も1つですみ、かつ、従来
例のように構成部品が複数となる場合のような各部品
(接続部52及びキャップ53)の組付作業は必要な
く、各部品相互の組付部位間での寸法精度の確保等が不
要となるため、生産効率を向上して製品コストを低減す
ることができる。Therefore, in the above embodiment, the water discharger 1
When 0, 30, 40 is connected to the water distribution pipe 2 via the connecting portions 11, 31, 41 and water is supplied, the water is supplied to the connecting portions 11, 3.
1, 41 and the guide portions 12, 32, 42, and then the water supply portion 1
The water is discharged from the water discharge holes 13a, 33a, 43a of 3, 33, 43 to the outside. At this time, the connecting portions 11, 31, 41,
Since the guide portions 12, 32, 42 and the water supply portions 13, 33, 43 are integrally formed of the same synthetic resin,
The entire passage of the water supply in the water discharge device 10, 30, 40 becomes a single and homogeneous molded product. As a result, there is no water leakage from the assembly boundary between the parts,
The product quality can be improved, and the appearance of the entire water discharge device is uniform and uniform, so that the appearance quality can be improved. On the other hand, the water discharge device 10, 3
Only one mold is required for molding 0, 40, and there is no need to assemble each component (connecting part 52 and cap 53) as in the case where there are multiple components as in the conventional example. Since it is not necessary to secure dimensional accuracy between the parts to be assembled with each other, it is possible to improve production efficiency and reduce product cost.
【0034】また、上記実施例の吐水装置10,30,
40の製造方法は、吐水装置10,30,40の外形と
同一の所定方向に延びる屈曲空間状をなすキャビティ2
1と、キャビティ21の延設方向の一端(吐水孔13
a,33a,43a側)に連通するガス吹込口22と、
キャビティ21の延設方向他端(接続部11,31,4
1の開口側)に連通する所定空間のガス吹出部23とを
有する金型を使用し、金型のキャビティ21内に溶融合
成樹脂Rをショートショットで注入する樹脂注入工程
と、金型のガス吹込口22からキャビティ21内の溶融
合成樹脂R内部にガスGを注入し、ガスG圧により溶融
合成樹脂Rをキャビティ21表面に内部から付勢圧接し
てキャビティ21形状に対応する形状に保持するととも
に、ガス吹込口22からガス吹出部23内に流入させ、
ガス吹込口22からガス吹出口23へと連通する給水通
路15を形成するガス注入工程と、冷却固化した合成樹
脂のガス吹込口部分25及びガス吹出部部分26を型開
き後に切断して、給水通路15の両端を開放する切断工
程とを具備する。Further, the water discharge device 10, 30,
The manufacturing method of 40 is a cavity 2 having a bent space shape extending in the same predetermined direction as the outer shapes of the water discharge devices 10, 30, 40.
1 and one end in the extending direction of the cavity 21 (the water discharge hole 13
a, 33a, 43a side), a gas inlet 22 communicating with
The other end of the cavity 21 in the extending direction (connecting portions 11, 31, 4
Resin injection step of injecting the molten synthetic resin R into the cavity 21 of the mold by a short shot, and a gas of the mold. Gas G is injected into the molten synthetic resin R in the cavity 21 from the blow-in port 22, and the molten synthetic resin R is urged and pressed against the surface of the cavity 21 from the inside by the gas G pressure to hold the molten synthetic resin R in a shape corresponding to the shape of the cavity 21. At the same time, it is made to flow into the gas outlet 23 from the gas inlet 22,
A gas injection step of forming a water supply passage 15 communicating from the gas injection port 22 to the gas injection port 23, and cutting the gas injection port portion 25 and the gas ejection portion portion 26 of the cooled and solidified synthetic resin after opening the mold to supply water. And a cutting step of opening both ends of the passage 15.
【0035】したがって、上記実施例は、樹脂注入工程
においてキャビティ21内に注入された溶融合成樹脂R
は、ガス注入工程において内部に注入されるガスG圧に
より、内部に空間を形成して外方に膨張し、キャビティ
21表面に圧接されてキャビティ21形状と同一外形に
付形される。また、溶融合成樹脂Rは、ガスG圧により
ガス吹込口22からガス吹出部23へと流入し、内部に
ガス吹込口22からガス吹出部23へと連通して延びる
空間状の給水通路15を形成する。そして、切断工程
で、冷却固化した合成樹脂のガス吹込口部分25及びガ
ス吹出部部分26を切断して給水通路15の両端を開放
することにより、所定方向に延びる屈曲筒状の吐水装置
10,30,40が、所定の合成樹脂より一体成形され
る。よって、吐水装置10,30,40の一端の接続部
11,31,41を配水管2に接続することにより、他
端開口である吐水口13a,33a,43aからの吐水
が自在となる。その結果、複数の部品を別個に射出成形
する場合と比べ、一つの金型でその成形を行なうことが
でき、製造工程を減少して生産効率を向上できる。ま
た、構成部品が複数となる場合のような各部品間の組付
作業は必要なく、各部品相互の組付部位間での寸法精度
の確保等が不要となるため、生産効率を向上して製品コ
ストを低減することができる。Therefore, in the above embodiment, the molten synthetic resin R injected into the cavity 21 in the resin injection step
In the gas injecting step, the gas G is injected into the inside to form a space inside and expand outward, and is pressed against the surface of the cavity 21 and shaped into the same shape as the shape of the cavity 21. In addition, the molten synthetic resin R flows into the gas blowing portion 23 from the gas blowing port 22 by the gas G pressure, and has a space-like water supply passage 15 that extends in communication with the gas blowing port 22 to the gas blowing portion 23. Form. Then, in the cutting step, by cutting the gas inlet port portion 25 and the gas outlet portion portion 26 of the synthetic resin that has been cooled and solidified to open both ends of the water supply passage 15, a curved tubular water discharge device 10 extending in a predetermined direction, 30 and 40 are integrally molded from a predetermined synthetic resin. Therefore, by connecting the connection portions 11, 31, 41 at one end of the water discharge device 10, 30, 40 to the water distribution pipe 2, water discharge from the water discharge ports 13a, 33a, 43a, which are the other end openings, becomes possible. As a result, compared with the case where a plurality of parts are separately injection-molded, the molding can be performed with one mold, and the manufacturing process can be reduced and the production efficiency can be improved. In addition, it is not necessary to assemble each part as in the case of multiple components, and it is not necessary to secure dimensional accuracy between the parts where each part is assembled, thus improving production efficiency. Product cost can be reduced.
【0036】一方、吐水装置10,30,40が、上記
のように屈曲筒状をなす場合、特に、多段湾曲形状等の
複雑な形状をなす場合でも、ガス吹込口22からのガス
Gが、キャビティ21の延設方向に沿って溶融合成樹脂
R内をガス吹出部23へと流れ、溶融合成樹脂R内に延
設方向に沿って延びる内部空間としての給水通路15を
形成する。その結果、吐水装置10,30,40が複雑
形状をなす場合でも、所望形状の筒状の吐水装置10,
30,40の成形が可能であり、吐水装置10,30,
40の形状を複雑化することができ、形状の自由度も高
い。そして、ガスG圧により吐水装置10,30,40
内部に給水通路15を形成するため、製造費上昇を招く
スライド型を使用する必要はなく、コスト低減を図るこ
とができる。加えて、スライド型を使用しないことか
ら、従来例のように、スライド型を抜き取るための孔で
ある装着孔51dを設ける必要はなく、また、その装着
孔51dを別部材のキャップ53で遮蔽するといった作
業も不要となり、コスト上昇、作業性の低下或いは外観
品質の低下を招くおそれもない。更に、ブロー成形品に
比べて、外観意匠を重視する製品に十分適用することが
できる。On the other hand, when the water discharger 10, 30, 40 has a bent cylindrical shape as described above, particularly when it has a complicated shape such as a multi-step curved shape, the gas G from the gas inlet 22 is The molten synthetic resin R flows along the extending direction of the cavity 21 to the gas blowing portion 23, and the water supply passage 15 is formed in the molten synthetic resin R as an internal space extending along the extending direction. As a result, even if the water dischargers 10, 30, 40 have a complicated shape, the cylindrical water discharger 10 having a desired shape,
It is possible to mold 30, 40, and the water discharge device 10, 30,
The shape of 40 can be complicated, and the degree of freedom of shape is high. Then, the water discharge device 10, 30, 40 is generated by the gas G pressure.
Since the water supply passage 15 is formed inside, it is not necessary to use a slide mold that causes an increase in manufacturing cost, and cost can be reduced. In addition, since the slide mold is not used, it is not necessary to provide the mounting hole 51d which is a hole for removing the slide mold unlike the conventional example, and the mounting hole 51d is shielded by the cap 53 which is a separate member. No such work is required, and there is no fear of cost increase, workability deterioration, or appearance quality deterioration. Further, the present invention can be sufficiently applied to products that emphasize the appearance design, as compared with blow-molded products.
【0037】ところで、上記実施例の吐水装置10,3
0,40は、水洗トイレのロータンク1の吐水口または
シャワーヘッドに具体化されたが、本発明を実施する場
合には、これに限定されるものではなく、水栓用品等の
一体成形品、特に、従来のスライド型による成形を必要
とするような形状の製品に具体化可能である。By the way, the water discharge devices 10 and 3 of the above embodiment.
Although 0 and 40 are embodied in the spout or the shower head of the low tank 1 of the flush toilet, the present invention is not limited to this, and an integrally molded product such as a faucet article, In particular, it can be embodied in a product having a shape that requires molding by a conventional slide mold.
【0038】また、上記実施例の吐水装置10,30,
40は屈曲筒状に形成されているが、本発明を実施する
場合には、これに限定されるものではなく、ガスインジ
ェクション成形による成形が可能な限りにおいて、例え
ば、S字状等の多段湾曲筒状、または、螺旋筒状等、必
要に応じて他の形状としてもよい。Further, the water discharge device 10, 30,
Although 40 is formed in a bent cylindrical shape, the present invention is not limited to this, and as long as molding by gas injection molding is possible, for example, a multi-step curve such as an S shape is formed. Other shapes such as a tubular shape or a spiral tubular shape may be used as required.
【0039】そして、上記実施例の吐水装置10,3
0,40の製造方法では、キャビティ21の一端にガス
吹込口22を、他端にガス吹出部23を設けるととも
に、ガス吹込口22を吐水孔13a,33a,43a側
とし、ガス吹出部23を接続部11,31,41側とし
たが、これを、ガス吹出部23を吐水孔13a,33
a,43a側とし、ガス吹込口22を接続部11,3
1,41側としてもよい。更に、吐水装置を複数の吐水
孔を有する形状に成形し、ガス吹込口22を前記複数の
吐水孔に接続してガスGを注入する構成としてもよい。
また、ガス吹込口22の形状またはガス吹出部23の形
状も適宜変更することができる。更に、樹脂注入工程に
おいて、キャビティ21内に溶融合成樹脂Rをフルショ
ットで注入した後、ガス圧にて溶融合成樹脂Rをガス吹
出部23内に注入することもできる。Then, the water discharge devices 10 and 3 of the above embodiment.
In the manufacturing method of 0 and 40, the gas blowing port 22 is provided at one end of the cavity 21 and the gas blowing port 23 is provided at the other end, and the gas blowing port 22 is set to the water discharge holes 13a, 33a, 43a side, and the gas blowing port 23 is provided. Although the connection portions 11, 31, 41 are provided, the gas blowout portion 23 is used as the water discharge holes 13a, 33.
a, 43a side, and the gas injection port 22 is connected to the connection parts 11, 3
It may be the 1,41 side. Further, the water discharger may be formed into a shape having a plurality of water discharge holes, and the gas inlet 22 may be connected to the plurality of water discharge holes to inject the gas G.
Further, the shape of the gas blowing port 22 or the shape of the gas blowing portion 23 can be appropriately changed. Furthermore, in the resin injecting step, the molten synthetic resin R may be injected into the cavity 21 in a full shot, and then the molten synthetic resin R may be injected into the gas blowing portion 23 by gas pressure.
【0040】[0040]
【発明の効果】以上のように、請求項1の発明にかかる
吐水装置は、配水管に接続自在とされ、配水管と連通す
る筒状をなす接続部と、前記接続部に延設され、前記接
続部と連通する筒状をなす案内部と、前記案内部に所定
の曲げ角度で延設され、前記案内部と連通するととも
に、先端に吐水孔を有する筒状をなす給水部とを、所定
の合成樹脂により一体形成したものである。As described above, the water discharger according to the invention of claim 1 can be freely connected to the water distribution pipe, and has a cylindrical connecting portion that communicates with the water distribution pipe, and extends to the connecting portion. A tubular guide portion that communicates with the connection portion, and a tubular water supply portion that extends in the guide portion at a predetermined bending angle, communicates with the guide portion, and has a tubular shape that has a water discharge hole at the tip, It is integrally formed of a predetermined synthetic resin.
【0041】したがって、吐水装置を配水管に接続部を
介して接続し、給水を行なうと、給水は接続部及び案内
部を経て給水部の吐水孔から外部に吐出される。このと
き、接続部、案内部及び給水部は全体を同一の合成樹脂
により一体成形されているため、吐水装置における給水
の通過経路全体が単一、かつ、均質の成形品となる。そ
の結果、各部品相互間の組付境界部からの水洩れを生じ
ることもなく、製品品質を向上することができるととも
に、吐水装置全体の外観が単一で均質なものとなるた
め、外観品質を良好なものとすることができる。一方、
吐水装置の成形のための金型も1つですみ、かつ、構成
部品が複数となる場合のような各部品間の組付作業は必
要なく、各部品相互の組付部位間での寸法精度の確保等
が不要となるため、生産効率を向上して製品コストを低
減することができる。Therefore, when the water spouting device is connected to the water distribution pipe through the connection part to supply water, the water supply is discharged to the outside from the water spouting hole of the water supply part through the connection part and the guide part. At this time, the connection part, the guide part, and the water supply part are integrally formed of the same synthetic resin, so that the entire water supply passage in the water discharge device is a single and homogeneous molded product. As a result, it is possible to improve product quality without causing water leakage from the assembly boundary between each part, and to make the appearance of the entire water discharge device uniform and uniform. Can be good. on the other hand,
Only one mold is required to mold the water discharge device, and there is no need for assembly work between parts, such as when there are multiple components, and dimensional accuracy between the parts where each part is assembled. Since it is not necessary to secure the production cost, it is possible to improve the production efficiency and reduce the product cost.
【0042】請求項2の発明にかかる吐水装置の製造方
法は、所定方向に延設した空間状のキャビティと、前記
キャビティの延設方向一端に連通するガス吹込口と、前
記キャビティの延設方向他端に連通する所定空間状のガ
ス吹出部とを有する金型を使用して、樹脂注入工程にお
いて、前記キャビティ内に溶融合成樹脂を注入し、ガス
注入工程において、前記金型のガス吹込口から前記キャ
ビティ内の溶融合成樹脂内部にガスを注入し、ガス圧に
より前記溶融合成樹脂をキャビティ表面に内部から付勢
圧接してキャビティ形状に対応する形状に保持するとと
もに、前記ガス吹込口から前記ガス吹出部内に流入させ
て、前記溶融合成樹脂内に前記ガス吹込口から前記ガス
吹出口へと延びる給水通路を形成し、切断工程におい
て、冷却固化した合成樹脂の前記ガス吹込口側及び前記
ガス吹出部側を切断して前記給水通路の延設方向両端を
開放するものである。According to a second aspect of the present invention, there is provided a method for manufacturing a water discharge device, wherein a space-like cavity extending in a predetermined direction, a gas inlet communicating with one end of the cavity in the extending direction, and an extending direction of the cavity. Using a mold having a predetermined space-like gas blowing portion that communicates with the other end, in the resin injecting step, the molten synthetic resin is injected into the cavity, and in the gas injecting step, the gas injecting port of the die is used. A gas is injected into the molten synthetic resin from the inside of the cavity, and the molten synthetic resin is pressed against the cavity surface from the inside by gas pressure to hold the molten synthetic resin in a shape corresponding to the cavity shape. A water supply passage is formed in the molten synthetic resin, the water supply passage extending from the gas inlet to the gas outlet, and is cooled and solidified in the cutting step. Said gas injection port side and the gas outlet side of the resin by cutting is to open the extending direction ends of the water supply passage.
【0043】なお、樹脂注入工程において、キャビティ
内に溶融合成樹脂をフルショットで注入した後、ガス圧
にて溶融合成樹脂をガス吹出部内に注入することもでき
る。したがって、樹脂注入工程においてキャビティ内に
注入された溶融合成樹脂は、ガス注入工程において内部
に注入されるガス圧により、内部に空間を形成して外方
に膨張し、キャビティ表面に圧接されてキャビティ形状
と同一外形に付形される。また、溶融合成樹脂内は、ガ
ス圧によりガス吹込口からガス吹出部へと流入し、ガス
吹込口からガス吹出部へと連通する給水通路を形成す
る。そして、切断工程で冷却固化した合成樹脂のガス吹
込口側及びガス吹出部側を切断して、給水通路の延設方
向両端を開放することにより、所定方向に延びるととも
に、延設方向両端に開口を有する筒状の吐水装置が、所
定の合成樹脂より一体成形される。よって、吐水装置の
一端の開口を配水管に接続することにより、他端開口か
らの吐水が自在となる。その結果、複数の部品を別個に
射出成形する場合と比べ、一つの金型でその成形を行な
うことができ、製造工程を減少して生産効率を向上でき
る。また、構成部品が複数となる場合のような各部品間
の組付作業は必要なく、各部品相互の組付部位間での寸
法精度の確保等が不要となるため、生産効率を向上して
製品コストを低減することができる。In the resin injection step, it is possible to inject the molten synthetic resin into the cavity in a full shot and then inject the molten synthetic resin into the gas blowing portion by gas pressure. Therefore, the molten synthetic resin injected into the cavity in the resin injecting step forms a space inside and expands outward due to the gas pressure injected into the cavity in the gas injecting step, and is pressed against the cavity surface to form a cavity. It has the same outer shape as the shape. In the molten synthetic resin, a gas pressure causes gas to flow from the gas inlet to the gas outlet to form a water supply passage that communicates from the gas inlet to the gas outlet. Then, by cutting the gas inlet side and the gas outlet side of the synthetic resin that has been cooled and solidified in the cutting step, and opening both ends in the extending direction of the water supply passage, the water supply passage extends in a predetermined direction and opens at both ends in the extending direction. The tubular water discharger having the above is integrally molded from a predetermined synthetic resin. Therefore, by connecting the opening at one end of the water discharger to the water distribution pipe, water can be freely discharged from the opening at the other end. As a result, compared with the case where a plurality of parts are separately injection-molded, the molding can be performed with one mold, and the manufacturing process can be reduced and the production efficiency can be improved. In addition, it is not necessary to assemble each part as in the case of multiple components, and it is not necessary to secure dimensional accuracy between the parts where each part is assembled, thus improving production efficiency. Product cost can be reduced.
【0044】一方、吐水装置が多段湾曲形状等の複雑な
形状をなす場合でも、ガス吹込口からのガスが、キャビ
ティの延設方向に沿って溶融合成樹脂内をガス吹出部へ
と流れ、溶融合成樹脂内に延設方向に沿って延びる内部
空間としての給水通路を形成する。その結果、吐水装置
が複雑形状をなす場合でも、所望形状の筒状の吐水装置
の成形が可能であり、吐水装置の形状を複雑化すること
ができ、形状の自由度も高い。そして、ガス圧により吐
水装置内部に給水通路を形成するため、製造費上昇を招
くスライド型を使用する必要はなく、コスト低減を図る
ことができる。加えて、スライド型を使用しないことか
ら、スライド型を抜き取るための孔を設ける必要はな
く、また、その孔を別部材で遮蔽する作業も不要とな
り、コスト上昇、作業性の低下或いは外観品質の低下を
招くおそれもない。On the other hand, even when the water discharger has a complicated shape such as a multi-step curved shape, the gas from the gas inlet flows through the molten synthetic resin to the gas outlet along the extending direction of the cavity and melts. A water supply passage is formed in the synthetic resin as an internal space extending along the extending direction. As a result, even if the water discharger has a complicated shape, a tubular water discharger having a desired shape can be formed, the shape of the water discharger can be complicated, and the degree of freedom of shape is high. Further, since the water supply passage is formed inside the water discharger by the gas pressure, there is no need to use a slide mold which causes an increase in manufacturing cost, and the cost can be reduced. In addition, since the slide mold is not used, it is not necessary to provide a hole for removing the slide mold, and the work of shielding the hole with a separate member is not required, resulting in an increase in cost, a reduction in workability, and a reduction in appearance quality. There is also no risk of deterioration.
【図1】図1は本発明の第一実施例の吐水装置を示す断
面図である。FIG. 1 is a sectional view showing a water discharger according to a first embodiment of the present invention.
【図2】図2は本発明の第一実施例の吐水装置を示す背
面図である。FIG. 2 is a rear view showing the water discharger of the first embodiment of the present invention.
【図3】図3は本発明の第一実施例の吐水装置の製造方
法を示す概略工程図であり、(a)は樹脂注入工程を、
(b)はガス注入工程の途中を、(c)はガス注入工程
の終了時を示す。FIG. 3 is a schematic process diagram showing a method of manufacturing a water discharger according to a first embodiment of the present invention, in which (a) shows a resin injection process,
(B) shows the middle of the gas injection process, and (c) shows the end of the gas injection process.
【図4】図4は本発明の第一実施例の吐水装置のガス吹
込口及びガス吹出部を切断した状態を示す断面図であ
る。FIG. 4 is a sectional view showing a state in which a gas inlet and a gas outlet of the water discharger according to the first embodiment of the present invention are cut.
【図5】図5は本発明の第二実施例の吐水装置を示す断
面図である。FIG. 5 is a sectional view showing a water discharger according to a second embodiment of the present invention.
【図6】図6は本発明の第三実施例の吐水装置を示す断
面図である。FIG. 6 is a sectional view showing a water discharger of a third embodiment of the present invention.
【図7】図7は水洗トイレのロータンクに吐水装置を取
付けた状態を示す斜視図である。FIG. 7 is a perspective view showing a state in which a water discharge device is attached to a low tank of a flush toilet.
【図8】図8は従来の吐水装置を示す断面図である。FIG. 8 is a cross-sectional view showing a conventional water discharger.
【図9】図9は従来の吐水装置を示す背面図である。FIG. 9 is a rear view showing a conventional water discharger.
2 配水管 11 接続部 12 垂立部(案内部) 13 傾斜部(給水部) 15 給水通路 21 キャビティ 22 ガス吹込口 23 ガス吹出部 31 接続部 32 垂立部(案内部) 33 傾斜部(給水部) 41 接続部 42 案内部 43 給水部 G ガス R 溶融合成樹脂 2 Water distribution pipe 11 Connection part 12 Vertical part (guide part) 13 Inclined part (water supply part) 15 Water supply passage 21 Cavity 22 Gas inlet port 23 Gas blowout part 31 Connection part 32 Vertical part (guide part) 33 Inclined part (water supply) Part) 41 connection part 42 guide part 43 water supply part G gas R molten synthetic resin
Claims (2)
する筒状をなす合成樹脂製の接続部と、 前記合成樹脂により前記接続部に延設して一体成形さ
れ、前記接続部と連通する筒状をなす案内部と、 前記合成樹脂により前記案内部に所定の曲げ角度で延設
して一体成形され、前記案内部と連通するとともに、先
端に吐水孔を有する筒状をなす給水部とを具備すること
を特徴とする吐水装置。1. A tubular connecting portion made of synthetic resin, which is connectable to a water pipe and communicates with the water pipe, and a synthetic resin which extends to the connecting portion and is integrally formed with the connecting portion. A cylindrical guide part that communicates with the guide part, which is made of the synthetic resin and extends integrally with the guide part at a predetermined bending angle, is integrally molded, and communicates with the guide part. And a water discharge device.
と、前記キャビティの延設方向の一端に連通するガス吹
込口と、前記キャビティの延設方向の他端に連通する所
定空間状のガス吹出部とを有する金型の前記キャビティ
内に溶融合成樹脂を注入する樹脂注入工程と、 前記金型のガス吹込口から前記キャビティ内の溶融合成
樹脂内部にガスを注入し、ガス圧により前記溶融合成樹
脂をキャビティ表面に内部から付勢圧接してキャビティ
形状に対応する形状に保持するとともに、前記ガス吹込
口から前記ガス吹出部内に流入させて、前記溶融合成樹
脂内に前記ガス吹込口から前記ガス吹出部へと延びる給
水通路を形成するガス注入工程と、 冷却固化した合成樹脂の前記ガス吹込口側及び前記ガス
吹出部側を切断して前記給水通路の延設方向両端を開放
する切断工程とを具備することを特徴とする吐水装置の
製造方法。2. A space-shaped cavity extending in a predetermined direction, a gas inlet communicating with one end of the cavity in the extending direction, and a space-like gas communicating with the other end of the cavity in the extending direction. A resin injection step of injecting a molten synthetic resin into the cavity of a mold having a blowout part, and injecting a gas into the molten synthetic resin inside the cavity from a gas injection port of the mold, and melting the gas by gas pressure. While holding the synthetic resin in a shape corresponding to the cavity shape by pressing the synthetic resin into the cavity from the inside, the synthetic resin is caused to flow into the gas blowing portion from the gas blowing port, and the synthetic resin is melted into the molten synthetic resin from the gas blowing port. A gas injection step of forming a water supply passage extending to the gas outlet, and cutting the gas inlet side and the gas outlet side of the cooled and solidified synthetic resin to extend the water supply passage in both directions. Method for producing a water discharge device, characterized by comprising a cutting step of releasing the.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17284893A JPH0726601A (en) | 1993-07-13 | 1993-07-13 | Water-spouting device and production thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17284893A JPH0726601A (en) | 1993-07-13 | 1993-07-13 | Water-spouting device and production thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0726601A true JPH0726601A (en) | 1995-01-27 |
Family
ID=15949439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17284893A Pending JPH0726601A (en) | 1993-07-13 | 1993-07-13 | Water-spouting device and production thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0726601A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08226150A (en) * | 1995-02-23 | 1996-09-03 | Onda Jiyuken Kogyo:Kk | Faucet and manufacture thereof |
JPH08226149A (en) * | 1995-02-23 | 1996-09-03 | Onda Jiyuken Kogyo:Kk | Faucet |
DE102022103247A1 (en) | 2022-02-11 | 2023-08-17 | Grohe Ag | Fitting housing for a sanitary fitting and method for producing such a fitting housing |
-
1993
- 1993-07-13 JP JP17284893A patent/JPH0726601A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08226150A (en) * | 1995-02-23 | 1996-09-03 | Onda Jiyuken Kogyo:Kk | Faucet and manufacture thereof |
JPH08226149A (en) * | 1995-02-23 | 1996-09-03 | Onda Jiyuken Kogyo:Kk | Faucet |
DE102022103247A1 (en) | 2022-02-11 | 2023-08-17 | Grohe Ag | Fitting housing for a sanitary fitting and method for producing such a fitting housing |
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