JP2017001315A - Resin product - Google Patents
Resin product Download PDFInfo
- Publication number
- JP2017001315A JP2017001315A JP2015118529A JP2015118529A JP2017001315A JP 2017001315 A JP2017001315 A JP 2017001315A JP 2015118529 A JP2015118529 A JP 2015118529A JP 2015118529 A JP2015118529 A JP 2015118529A JP 2017001315 A JP2017001315 A JP 2017001315A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- joint
- joining
- groove
- cavity
- 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.)
- Granted
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 64
- 239000011347 resin Substances 0.000 title claims abstract description 64
- 238000005304 joining Methods 0.000 claims abstract description 21
- 230000013011 mating Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 description 36
- 239000004840 adhesive resin Substances 0.000 description 18
- 229920006223 adhesive resin Polymers 0.000 description 18
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K13/00—Seats or covers for all kinds of closets
- A47K13/02—Seats or covers for all kinds of closets of plastic materials
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K13/00—Seats or covers for all kinds of closets
- A47K13/24—Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22, e.g. devices imparting a swinging or vibrating motion to the seats
- A47K13/30—Seats having provisions for heating, deodorising or the like, e.g. ventilating, noise-damping or cleaning devices
- A47K13/305—Seats with heating devices
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Toilet Supplies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
本発明は、例えば、内部にヒータ等を配置することができる中空部を有する便座等、樹脂部材同士を射出により接合して形成される樹脂製品に関するものである。 The present invention relates to a resin product formed by joining resin members by injection, such as a toilet seat having a hollow portion in which a heater or the like can be disposed.
近年、便座に中空部を形成して内部にヒータ等を配置してなる便座が開発されており、中空部を形成するために便座を上側部品と下側部品とにより構成し、上側部品と下側部品とを接合することにより便座を形成することが行われている。
このような便座の上側部品と下側部品等の樹脂部品同士の接合は、振動溶着（特許文献１）によって行われるか、もしくは、上側部品と下側部品との間の隙間（通路）に溶着用の樹脂を射出して固着する（特許文献２）ことによって行われていた。
In recent years, toilet seats have been developed in which a hollow portion is formed in a toilet seat and a heater or the like is disposed therein, and the toilet seat is composed of an upper part and a lower part in order to form a hollow part. A toilet seat is formed by joining side parts.
Such joining of the resin parts such as the upper part and the lower part of the toilet seat is performed by vibration welding (Patent Document 1), or welded to a gap (passage) between the upper part and the lower part. This is done by injecting and fixing a resin for use (Patent Document 2).
しかしながら、上記特許文献１に開示された振動溶着による接合方法は、溶着によって生じたバリ等を削るなどの仕上げ工程が大幅に必要となり、全体として製造工程が増加してしまった。一方、上記特許文献２に開示された樹脂を射出して固着する接合方法は、射出部分の入口に突起を設けて射出時の樹脂漏れを防いでおり、射出後突起を潰すことから、突起の潰しにばらつきが生じて段差が残ってしまうことがあった。 However, the joining method by vibration welding disclosed in Patent Document 1 requires a finishing process such as scraping burrs and the like generated by welding, and the manufacturing process as a whole has increased. On the other hand, in the bonding method for injecting and fixing the resin disclosed in Patent Document 2, a protrusion is provided at the entrance of the injection portion to prevent resin leakage at the time of injection. In some cases, the crushing varies and a step remains.
本発明は、上記事情を鑑みたものであり、製造工程を増やすことなく、樹脂部材の接合を確実に行うことができる樹脂製品を提供することを目的とするものである。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a resin product capable of reliably joining resin members without increasing the number of manufacturing steps.
上記目的を達成するために、本発明は、樹脂部品同士を接合することにより形成される樹脂製品であって、一方の樹脂部品の接合部と、他方の樹脂部品の接合部とを当接して接合されており、一方の樹脂部品の接合部には、溝部と、溝部の一側に沿って延びる嵌合壁部が形成され、他方の樹脂部品の接合部には、溝部と、溝部の一側に沿って延びる嵌合凹部が形成され、一方の樹脂部品と他方の樹脂部品との接合状態において、一方の樹脂部品の溝部と他方の樹脂部品の溝部とによって空洞部が形成されるとともに、空洞部の一側において嵌合壁部と嵌合凹部とが嵌合していることを特徴とする。 In order to achieve the above object, the present invention is a resin product formed by joining resin parts together, wherein a joint part of one resin part and a joint part of the other resin part are brought into contact with each other. A groove portion and a fitting wall portion extending along one side of the groove portion are formed in the joint portion of one resin part, and the groove portion and one of the groove portions are formed in the joint portion of the other resin component. A fitting recess extending along the side is formed, and in the joined state between one resin part and the other resin part, a cavity is formed by the groove part of one resin part and the groove part of the other resin part, The fitting wall and the fitting recess are fitted on one side of the cavity.
樹脂部品同士の接合面を当接させて、接合部に樹脂を射出することにより接合する際に、射出した樹脂が接合面の当接部分から漏れ出すことなく充填することができ、樹脂部品同士を確実に接合することができる。 When joining the resin parts by bringing the joint surfaces into contact with each other and injecting the resin into the joints, the injected resin can be filled without leaking from the contact parts of the joint surfaces. Can be reliably joined.
本発明の樹脂製品の実施形態として、中空部を備える便座を示しながら、図面を参考にして説明する。
−便座（樹脂製品）の構成−
図１（ａ）に示すように、本発明の樹脂製品の実施形態に係る便座１は、全体として平面視で半楕円形状を有し、その中央部に前後方向に長い略楕円形状の開口１ａが形成されており、後側辺に設けたヒンジ部１ｂにより便器本体の上面に対して、回動自在に取り付けられている。
便座１は、例えばポリプロピレン等の樹脂からなる樹脂部品である上側部品１１と下側部品１２とを、その側端部に形成された接合部において上下方向に接合することにより形成されており、中空部１４内にはヒータ１ｃ等が配置されている。
なお、以下の説明において、図１（ｂ）に示すように、開口１ａ側（左側）を「内周側」といい、反開口側（右側）を「外周側」という。
An embodiment of the resin product of the present invention will be described with reference to the drawings while showing a toilet seat having a hollow portion.
-Composition of toilet seat (resin product)-
As shown to Fig.1 (a), the toilet seat 1 which concerns on embodiment of the resin product of this invention has a semi-elliptical shape by planar view as a whole, and the substantially elliptical opening 1a long in the front-back direction in the center part. Is formed and is pivotally attached to the upper surface of the toilet body by a hinge portion 1b provided on the rear side.
The toilet seat 1 is formed by joining an upper part 11 and a lower part 12, which are resin parts made of resin such as polypropylene, for example, in a vertical direction at a joint portion formed on the side end portion thereof, and is hollow. A heater 1c and the like are disposed in the portion 14.
In the following description, as shown in FIG. 1B, the opening 1a side (left side) is referred to as “inner peripheral side”, and the non-opening side (right side) is referred to as “outer peripheral side”.
図２に示すように、便座１の上側部品１１は、中央の開口１ａに向かって下方に傾斜する上面部１１１と、上面部１１１の外周側から下方に向けて延設される上外壁部１１２と、上面部１１１の内周側から下方に向けて延設される上内壁部１１３とから形成されており、一方、便座１の下側部品１２は、略平坦な下面部１２１と、下面部１２１の外周側から上方に向けて延設される下外壁部１２２と、下面部１２１の内周側に形成される下内壁部１２３とから形成されている。そして、上側部品１１の上外壁部１１２と上内壁部１１３の下端部分、下側部品１２の下外壁部１２２と下内壁部１２３の上端部分が上側部品と下側部品とを接合する接合部（図２のＡ，Ｂ，Ｃ，Ｄで示す部分）として構成されている。 As shown in FIG. 2, the upper part 11 of the toilet seat 1 includes an upper surface portion 111 that is inclined downward toward the central opening 1 a and an upper outer wall portion 112 that extends downward from the outer peripheral side of the upper surface portion 111. And an upper inner wall portion 113 extending downward from the inner peripheral side of the upper surface portion 111, while the lower part 12 of the toilet seat 1 includes a substantially flat lower surface portion 121 and a lower surface portion. The lower outer wall portion 122 extends upward from the outer peripheral side of the 121 and the lower inner wall portion 123 formed on the inner peripheral side of the lower surface portion 121. And the lower part of the upper outer wall part 112 and the upper inner wall part 113 of the upper part 11, and the lower outer part 122 and the upper part of the lower inner wall part 123 of the lower part 12 join the upper part and the lower part. (Parts indicated by A, B, C, and D in FIG. 2).
上側部品１１の上外壁部１１２の接合部Ａは略水平な接合面１１２ａを有しており、接合面１１２ａの外周側に下方に開口する上溝部１１２ｂが形成されており、上溝部１１２ｂを構成する外周側の外周壁１１２ｃの下面は接合面１１２ａに比べて上方に位置している。接合面１１２ａの内周側には下方に延設する嵌合壁部１１２ｄが形成されており、嵌合壁部１１２ｄの内面は便座１の中空部の内面と連続している。
下側部品１２の下外壁部１２２の接合部Ｂは略水平な接合面１２２ａを有しており、接合面１２２ａの外周側に上方に開口する下溝部１２２ｂが形成され、下溝部１２２ｂを構成する外周側の外周壁１２２ｃの上面は接合面１２２ａに比べて下方に位置している。接合面１２２ａの内周側には下方にへこむ嵌合凹部１２２ｄが形成されている。
なお、上側部品１１の上内壁部１１３の接合部Ｃ及び下側部品１２の下内壁部１２３の接合部Ｄの構成は、上外壁部１１２及び下外壁部１２２の構成と略同様であるので、説明を省略する。
The joint portion A of the upper outer wall portion 112 of the upper part 11 has a substantially horizontal joint surface 112a, and an upper groove portion 112b that opens downward is formed on the outer peripheral side of the joint surface 112a, forming the upper groove portion 112b. The lower surface of the outer peripheral wall 112c on the outer peripheral side is positioned above the bonding surface 112a. A fitting wall portion 112d extending downward is formed on the inner peripheral side of the joint surface 112a, and the inner surface of the fitting wall portion 112d is continuous with the inner surface of the hollow portion of the toilet seat 1.
The joint portion B of the lower outer wall portion 122 of the lower part 12 has a substantially horizontal joint surface 122a, and a lower groove portion 122b that opens upward is formed on the outer peripheral side of the joint surface 122a to form the lower groove portion 122b. The upper surface of the outer peripheral wall 122c on the outer peripheral side is located below the bonding surface 122a. A fitting recess 122d that is recessed downward is formed on the inner peripheral side of the joint surface 122a.
In addition, since the structure of the junction part C of the upper inner wall part 113 of the upper part 11 and the junction part D of the lower inner wall part 123 of the lower part 12 is substantially the same as the structure of the upper outer wall part 112 and the lower outer wall part 122, Description is omitted.
−上側部品と下側部品との接合−
上側部品１１と下側部品１２とからなる便座１は、上側部品１１と下側部品１２とを上下方向に当接させた状態で型内に収容し、上側部品１１と下側部品１２の接合部の当接部分に形成される空洞部に対して接合用の樹脂を射出（注入）することにより形成される。
以下、便座１の形成方法について、接合部Ａと接合部Ｂとの接合部分を用いて、詳細に説明する。
-Joining the upper and lower parts-
The toilet seat 1 including the upper part 11 and the lower part 12 is accommodated in a mold in a state where the upper part 11 and the lower part 12 are in contact with each other in the vertical direction, and the upper part 11 and the lower part 12 are joined. It is formed by injecting (injecting) resin for bonding into the cavity formed in the contact portion of the part.
Hereinafter, the method for forming the toilet seat 1 will be described in detail using a joint portion between the joint portion A and the joint portion B.
図３に示すように、上側部品１１と下側部品１２の接合部同士を当接した状態においては、上側部品１１の接合部Ａの接合面１１２ａと下側部品１２の接合部Ｂの接合面１２２ａとが上下方向に水平な当接面をもって当接しており、当接面の外周側には上側部品１１の上溝部１１２ｂと下側部品１２の下溝部１２２ｂとによって便座１の長手方向に沿って延びる空洞部１３が形成されている。
そして、上溝部１１２ｂ及び下溝部１２２ｂの外周側の外周壁１１２ｃ，１２２ｃはともに接合面１１２ａ，１２２ａよりも上下方向で短く形成されていることから、空洞部１３の外周側は当接することなく、空洞部１３と外部とを連通する連通部１３ａが形成されている。
一方、空洞部１３の内周側には、上側部品１１の接合面１１２ａから延設される嵌合壁部１１２ｄが、下側部品１２の接合面１２２ａに形成された嵌合凹部１２２ｄに嵌まりこみ、上側部品１１と下側部品１２とが空洞部１３の内周側（中空部側）で重複して接合されており、接合面１１２ａ，１２２ａ同士が当接して形成される接合面が便座１の中空部に対して直線的に連続しないように形成されている。
なお、上側部品１１と下側部品１２との接合に際して、両者の接合部に、図１（ａ）に点線で示すように、便座の中空部に向かって部分的に突出するように肉厚部を形成するか、もしくは全周に亘って接合部の肉厚を大きくするなどし、該肉厚部、もしくは肉厚を大きくした接合部に凸部と凹部とによる位置決め部１ｄを設けることにより、上側部品１１と下側部品１２の接合部の長手方向の位置決めを行うことができ、製造精度を向上させることができる。
As shown in FIG. 3, in a state where the joint parts of the upper part 11 and the lower part 12 are in contact with each other, the joint surface 112 a of the joint part A of the upper part 11 and the joint surface of the joint part B of the lower part 12. 122a abuts with a horizontal abutment surface in the vertical direction, and along the longitudinal direction of the toilet seat 1 on the outer peripheral side of the abutment surface by the upper groove portion 112b of the upper part 11 and the lower groove portion 122b of the lower part 12 A hollow portion 13 is formed.
And since the outer peripheral walls 112c and 122c on the outer peripheral side of the upper groove portion 112b and the lower groove portion 122b are both formed shorter in the vertical direction than the joint surfaces 112a and 122a, the outer peripheral side of the cavity portion 13 does not come into contact. A communication portion 13a that connects the hollow portion 13 and the outside is formed.
On the other hand, on the inner peripheral side of the cavity part 13, a fitting wall part 112 d extending from the joining surface 112 a of the upper part 11 fits into a fitting recess 122 d formed on the joining surface 122 a of the lower part 12. The upper part 11 and the lower part 12 are overlapped and joined on the inner peripheral side (hollow part side) of the cavity part 13, and the joining surface formed by abutting the joining surfaces 112a and 122a is the toilet seat. It is formed so as not to be linearly continuous with respect to one hollow portion.
When the upper part 11 and the lower part 12 are joined, the thick part of the joint part of the upper part 11 and the lower part 12 protrudes partly toward the hollow part of the toilet seat as shown by the dotted line in FIG. Or by increasing the thickness of the joint part over the entire circumference, and providing the positioning part 1d with the convex part and the concave part in the thick part, or the joint part with increased thickness, Positioning in the longitudinal direction of the joint between the upper part 11 and the lower part 12 can be performed, and the manufacturing accuracy can be improved.
図４に示すように、上下方向に当接して組み立てられた上側部品１１及び下側部品１２は、上型５１及び下型５２により形成される収納空間内に収納される。収納空間は、便座１の外形と略同様の形状をなしており、収納空間内で便座１ががたつくことがないように収容される。空洞部１３と外部とを連通する連通部１３ａは、上型５１及び下型５２の当接部付近に配置され、図１（ａ）に三角の印ａで示すように、便座１の外周側及び内周側の複数箇所において、上型５１と下型５２の当接部に連通部１３ａに連通する樹脂供給口５１ａが形成される。そして、上型５１及び下型５２を型締めした後、樹脂供給口５１ａより接着用樹脂を射出（注入）することにより、空洞部１３の内部に接着用樹脂が供給される。接着用樹脂としては、便座１の材料と同じ例えばポリプロピレン等の熱可塑性樹脂を用いることができ、溶融状態とした接着用樹脂を空洞部１３内に射出（注入）することにより、溶融状態の接着用樹脂が接触した部位の上側部品１１及び下側部品１２が溶融し、注入した樹脂と共に冷却して硬化することで上側部品１１と下側部品１２とが強固に接合される。
接着用樹脂の冷却硬化後、上下の型５１，５２を外して便座１を取り出し、表面を磨くなどの仕上げ処理をすることで便座１が形成される。
As shown in FIG. 4, the upper part 11 and the lower part 12 assembled in contact with each other in the vertical direction are stored in a storage space formed by the upper mold 51 and the lower mold 52. The storage space has substantially the same shape as the outer shape of the toilet seat 1 and is stored so that the toilet seat 1 does not rattle in the storage space. The communicating portion 13a that communicates the cavity portion 13 with the outside is disposed in the vicinity of the abutting portion of the upper die 51 and the lower die 52, and as shown by a triangular mark a in FIG. In addition, at a plurality of locations on the inner peripheral side, resin supply ports 51 a that communicate with the communication portion 13 a are formed at the contact portions of the upper mold 51 and the lower mold 52. After the upper mold 51 and the lower mold 52 are clamped, the adhesive resin is supplied into the cavity 13 by injecting (injecting) the adhesive resin from the resin supply port 51a. As the adhesive resin, the same thermoplastic resin as the toilet seat material, such as polypropylene, can be used. By injecting (injecting) the adhesive resin into the cavity 13 in a molten state, the adhesive in the molten state can be used. The upper part 11 and the lower part 12 at the part in contact with the resin for resin melt and are cooled and cured together with the injected resin, so that the upper part 11 and the lower part 12 are firmly joined.
After the adhesive resin is cooled and cured, the upper and lower molds 51 and 52 are removed, the toilet seat 1 is taken out, and the toilet seat 1 is formed by finishing the surface.
なお、接合部の構成をより理解するために各部分の寸法を図４（ｂ）に例示すると、嵌合壁部１１２ｄの厚み寸法ａ＝１．５ｍｍ、接合面１１２ａの厚み寸法ｂ＝１．５ｍｍ、上溝部１１２ｂ（空洞部１３）の厚み寸法ｃ＝２ｍｍ、外周壁１１２ｃの厚み寸法ｄ＝１ｍｍ、連通部１３ａの高さ寸法ｅ＝１ｍｍ、空洞部１３の高さ寸法ｆ＝５ｍｍとしている。
このように、外周壁１１２ｃの厚み寸法ｄを１ｍｍ程度の比較的薄い板状に形成することにより、射出された接着用樹脂が優先的に空洞部１３内を充填するように流れた際に、空洞部１３内に充填された接着用樹脂の圧力によって外周壁１１２ｃ，１２２ｃが撓むなどして上型５１及び下型５２に対して押しつけられるので、外周壁１１２ｃ，１２２ｃと上、下型５１，５２との間に接着用樹脂が漏れることを防ぎ、成型後の便座１の表面に樹脂漏れよるヒケや変形が生じることを抑制することができる。
なお、上側部品１１の外周壁１１２ｃ及び下側部品１２の外周壁１２２ｃをそれぞれ図３（ｂ）に点線で示すように１〜３度程度傾斜させることで、上側部品１１及び下側部品１２に成形変動や収縮率変動等により寸法変動が生じても、両外周壁１１２ｃ，１２２ｃの上、下型５１，５２への当たりむらを無くし、両外周壁１１２ｃ，１２２ｃと上、下型５１，５２との間に隙間が生じて接着用樹脂が漏れることを一層防止することができる。
In order to better understand the configuration of the joint portion, the dimensions of each part are illustrated in FIG. 4B. The thickness dimension a of the fitting wall portion 112d is 1.5 mm, and the thickness dimension b of the joint surface 112a is 1. The thickness dimension c of the upper groove 112b (cavity 13) is 2 mm, the thickness d of the outer peripheral wall 112c is 1 mm, the height e of the communication part 13a is 1 mm, and the height dimension f of the cavity 13 is 5 mm. .
As described above, by forming the outer peripheral wall 112c in a relatively thin plate shape having a thickness dimension d of about 1 mm, when the injected adhesive resin flows preferentially to fill the cavity 13, Since the outer peripheral walls 112c and 122c are bent and pressed against the upper mold 51 and the lower mold 52 by the pressure of the adhesive resin filled in the cavity 13, the outer peripheral walls 112c and 122c and the upper and lower molds 51 are pressed. , 52 can be prevented from leaking and the sink or deformation due to the resin leak can be suppressed on the surface of the toilet seat 1 after molding.
The outer peripheral wall 112c of the upper part 11 and the outer peripheral wall 122c of the lower part 12 are inclined by about 1 to 3 degrees as indicated by dotted lines in FIG. Even if dimensional fluctuations occur due to molding fluctuations, shrinkage ratio fluctuations, etc., uneven contact with the lower molds 51 and 52 on both outer peripheral walls 112c and 122c is eliminated, and both the outer peripheral walls 112c and 122c and upper and lower molds 51 and 52 are eliminated. It is possible to further prevent the adhesive resin from leaking due to a gap between the two.
また、溶融状態の接着用樹脂を射出（注入）する際には、樹脂の射出（注入）によって空洞部１３の内周を構成する接合面１１２ａ，１２２ａの当接部が離間して接着用樹脂が漏れ出す可能性があるが、本実施形態の便座１においては、空洞部１３の内周側は、上側部品１１の接合面１１２ａから延設される嵌合壁部１１２ｄが下側部品１２の接合面１２２ａに形成された嵌合凹部１２２ｄに嵌まりこみ、空洞部１３の内周側において上側部品１１と下側部品１２とが重複するように接合しているので、射出によって上側部品１１と下側部品１２とに若干の反り等が発生した場合であっても、上側部品１１と下側部品１２との間に中空部に直線的に連通する連通路が形成されることがない。 Further, when the molten adhesive resin is injected (injected), the contact portions of the joint surfaces 112a and 122a constituting the inner periphery of the cavity 13 are separated by the injection (injection) of the resin, and the adhesive resin However, in the toilet seat 1 of the present embodiment, the fitting wall portion 112d extending from the joint surface 112a of the upper part 11 is provided on the inner peripheral side of the cavity part 13 in the lower part 12. Since the upper part 11 and the lower part 12 are joined so as to be overlapped on the inner peripheral side of the cavity part 13 by fitting into the fitting recess 122d formed on the joining surface 122a, the upper part 11 and the upper part 11 are joined by injection. Even if a slight warp or the like occurs in the lower part 12, a communication path that communicates linearly with the hollow portion is not formed between the upper part 11 and the lower part 12.
また、空洞部に射出（注入）された溶融状態の接着用樹脂は、接合面１１２ａ，１２２ａの間を通って便座１の中空部内に侵入しようとするが、接合面１１２ａ，１２２ａ同士が当接して形成される当接面は、嵌合壁部１１２ｄと嵌合凹部１２２ｄとの嵌まり込みによって形成される嵌合面に連続して、当接面の内周側が下方に屈曲した後内周に屈曲する屈曲路として形成されているので、射出された溶融状態の接着用樹脂が直線的に中空部内に侵入することがなく、屈曲路によって侵入の勢いが抑えられ、中空部内に達することなく冷却硬化されるので、中空部（裏面）への接着用樹脂の漏れを起こし難い。 Also, the molten adhesive resin injected (injected) into the cavity portion tries to enter the hollow portion of the toilet seat 1 through the joint surfaces 112a and 122a, but the joint surfaces 112a and 122a come into contact with each other. The abutment surface is formed continuously with the engagement surface formed by fitting the engagement wall portion 112d and the engagement recess 122d, and the inner periphery side of the contact surface is bent downward. Since the injected adhesive resin in the molten state does not enter the hollow portion linearly, the bending passage suppresses the momentum of invasion and does not reach the hollow portion. Since it is cooled and hardened, it is difficult for the adhesive resin to leak into the hollow portion (back surface).
さらに、空洞部１３及び空洞部１３に連通する連通部１３ａは、接合面１１２ａと接合面１２２ａとの当接面を挟んで上下に対称となっており、連通部１３ａより射出された接着用樹脂は、空洞部１３において上側部品１１の上溝部１１２ｂ及び下側部品１２の下溝部１２２ｂに対して均一に射出され、どちらか一方に偏って射出されることで一方の部品が大きく変形することを防止している。 Further, the cavity 13 and the communication portion 13a communicating with the cavity 13 are symmetrical in the vertical direction across the contact surface between the joint surface 112a and the joint surface 122a, and the adhesive resin injected from the communication portion 13a. Is that the hollow part 13 is uniformly injected to the upper groove part 112b of the upper part 11 and the lower groove part 122b of the lower part 12, and that one of the parts is greatly deformed by being injected in either direction. It is preventing.
以上のように、本発明の実施形態に係る便座においては、便座を構成する上側部品と下側部品との接合状態において、接合面を中心とする空洞部を形成するとともに、空洞部の外周側の外周壁が比較的薄く形成されているので、空洞部内に射出されて空洞部内に充填される接着用樹脂の圧力により、外周壁が撓むなどして型に押しつけられて樹脂部材と型との間に接着用樹脂が漏れ出すことが防止される。
また、空洞部の中空部側を上側部材の嵌合壁部と下側部材の嵌合凹部との嵌まり込みにより接合させ、上側部品と下側部品とが空洞部の中空部側で重複して接合されているので、溶融状態の接着用樹脂の射出による空洞部の中空部側が変形することを抑制することができ、上側部品と下側部品との接合部が離間することなく、接着用樹脂が便座の中空部内に漏れ出すことを防止することができる。
また、空洞部に射出される接着用樹脂が空洞内で上側部品と下側部品とに対して均一に射出（注入）されるために、上側部品もしくは下側部品の一方に偏って射出されることによって大きく変形されることを防止できるので、上側部品と下側部品との接合部の離間をさらに抑制し、接着用樹脂が便座の中空部内に漏れ出すことを防止することができる。
As described above, in the toilet seat according to the embodiment of the present invention, in the joined state of the upper part and the lower part constituting the toilet seat, the cavity part is formed around the joining surface and the outer peripheral side of the cavity part is formed. Since the outer peripheral wall is relatively thin, the outer peripheral wall is bent and pressed against the mold by the pressure of the adhesive resin that is injected into the cavity and filled in the cavity. It is possible to prevent the adhesive resin from leaking out.
Further, the hollow part side of the cavity part is joined by fitting the fitting wall part of the upper member and the fitting concave part of the lower member, and the upper part and the lower part overlap on the hollow part side of the cavity part. Therefore, it is possible to suppress deformation of the hollow portion side of the hollow portion due to injection of the adhesive resin in the molten state, and the bonding portion between the upper part and the lower part is not separated and is used for bonding. It is possible to prevent the resin from leaking into the hollow portion of the toilet seat.
In addition, since the adhesive resin injected into the cavity is uniformly injected (injected) into the upper part and the lower part in the cavity, the resin is injected with a bias toward one of the upper part and the lower part. Since it can prevent that it deform | transforms greatly by this, separation of the junction part of an upper part and a lower part is further suppressed, and it can prevent that resin for adhesion leaks in the hollow part of a toilet seat.
以上、本発明の実施形態として、中空部を備える便座を参考に説明したが、本発明の樹脂製品は、便座に限定されるものではなく、射出により接合されて形成されるものであれば、どのようなものであってもよく、本発明の樹脂製品に用いられている接合構造を備えることにより、接合面の外観がよく、特に仕上げ処理を行う必要がないという格別の作用効果を備えるものである。
そして、特に、便座として採用することにより、接合部の隙間がなく、汚水や汚物等が付着しても容易に拭き取りができ、衛生的で好ましい。
なお、上記実施形態において例示された樹脂部品の接合部の寸法は、一例に過ぎず、例えば、位置決め部１ｄを設けるために接合部の全周に亘って肉厚を大きくする場合などには、嵌合壁部１１２ｄ（嵌合凹部１２２ｄ）の寸法を２．０ｍｍ以上とするなど、適宜決定することができる。
また、上記実施形態において、型の構成は、特に上下二つに分割するものに限るものではなく、横方向に分割するものでも、また、三つ以上の複数に分割するものでもよい。
As described above, the embodiment of the present invention has been described with reference to a toilet seat having a hollow portion, but the resin product of the present invention is not limited to the toilet seat, and may be formed by being joined by injection. Whatever may be used, by providing the joint structure used in the resin product of the present invention, the appearance of the joint surface is good, and it has a special effect that there is no need for finishing treatment in particular. It is.
In particular, by adopting it as a toilet seat, there is no gap in the joint portion, and even if sewage or filth adheres, it can be easily wiped off, which is hygienic and preferable.
In addition, the dimension of the joint part of the resin part illustrated in the above embodiment is merely an example. For example, when the wall thickness is increased over the entire circumference of the joint part in order to provide the positioning part 1d, The dimension of the fitting wall 112d (fitting recess 122d) can be determined as appropriate, for example, 2.0 mm or more.
Moreover, in the said embodiment, the structure of a type | mold is not restricted especially to what is divided | segmented into two upper and lower sides, You may divide | segment into a horizontal direction and may divide | segment into three or more.
１ ：便座
１１ ：上側部品
１１１ ：上面部
１１２ ：上外壁部
１１２ａ ：接合面
１１２ｂ ：上溝部
１１２ｃ ：外周壁
１１２ｄ ：嵌合壁部
１１３ ：上内壁部
１２ ：下側部品
１２１ ：下面部
１２２ ：下外壁部
１２２ａ ：接合面
１２２ｂ ：下溝部
１２２ｃ ：外周壁
１２２ｄ ：嵌合凹部
１２３ ：下内壁部
１３ ：空洞部
１３ａ ：連通部
１４ ：中空部
５１ ：上型
５１ａ ：樹脂供給口
５２ ：下型
1: Toilet seat 11: Upper part 111: Upper surface part 112: Upper outer wall part 112a: Joining surface 112b: Upper groove part 112c: Outer peripheral wall 112d: Fitting wall part 113: Upper inner wall part 12: Lower part 121: Lower surface part 122: Lower outer wall portion 122a: Joining surface 122b: Lower groove portion 122c: Outer peripheral wall 122d: Fitting recess 123: Lower inner wall portion 13: Hollow portion 13a: Communication portion 14: Hollow portion 51: Upper die 51a: Resin supply port 52: Lower die
Claims (1)
一方の樹脂部品の接合部と、他方の樹脂部品の接合部とを当接して接合されており、
一方の樹脂部品の接合部には、溝部と、溝部の一側に沿って延びる嵌合壁部が形成され、
他方の樹脂部品の接合部には、溝部と、溝部の一側に沿って延びる嵌合凹部が形成され、
一方の樹脂部品と他方の樹脂部品との接合状態において、一方の樹脂部品の溝部と他方の樹脂部品の溝部とによって空洞部が形成されるとともに、空洞部の一側において嵌合壁部と嵌合凹部とが嵌合している
ことを特徴とする樹脂製品。
It is a resin product formed by joining resin parts,
The joint part of one resin part and the joint part of the other resin part are abutted and joined,
In the joint part of one resin part, a groove part and a fitting wall part extending along one side of the groove part are formed,
In the joint portion of the other resin part, a groove portion and a fitting concave portion extending along one side of the groove portion are formed,
In a joined state between one resin part and the other resin part, a cavity is formed by the groove of one resin part and the groove of the other resin part, and the fitting wall is fitted on one side of the cavity. A resin product characterized in that the mating recess is fitted.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015118529A JP6275669B2 (en) | 2015-06-11 | 2015-06-11 | Resin products |
| CN201610389828.XA CN106239903B (en) | 2015-06-11 | 2016-06-03 | Resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015118529A JP6275669B2 (en) | 2015-06-11 | 2015-06-11 | Resin products |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018002152A Division JP6340489B2 (en) | 2018-01-10 | 2018-01-10 | Resin products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017001315A true JP2017001315A (en) | 2017-01-05 |
| JP6275669B2 JP6275669B2 (en) | 2018-02-07 |
Family
ID=57612918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015118529A Active JP6275669B2 (en) | 2015-06-11 | 2015-06-11 | Resin products |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6275669B2 (en) |
| CN (1) | CN106239903B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018092851A1 (en) * | 2016-11-18 | 2018-05-24 | 児玉化学工業株式会社 | Resin product |
| JP2021159259A (en) * | 2020-03-31 | 2021-10-11 | 児玉化学工業株式会社 | Hand dryer, molding method of hand dryer, and hand washing drying unit |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6521109B2 (en) * | 2017-04-28 | 2019-05-29 | Toto株式会社 | toilet seat |
| JP6748927B2 (en) * | 2018-03-29 | 2020-09-02 | Toto株式会社 | toilet seat |
| JP6551815B1 (en) * | 2018-09-28 | 2019-07-31 | Toto株式会社 | toilet seat |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09290437A (en) * | 1996-02-26 | 1997-11-11 | Matsushita Electric Works Ltd | Hollow resin product |
| JPH11147265A (en) * | 1997-11-19 | 1999-06-02 | Denso Corp | Production of hollow product made of resin |
| JP2002113785A (en) * | 2000-07-31 | 2002-04-16 | Gp Daikyo Corp | Joining structure for hollow body of synthetic resin and mold structure |
| JP2002225080A (en) * | 2001-02-01 | 2002-08-14 | Kojima Press Co Ltd | Molding method for resin product |
| JP2003245940A (en) * | 2002-02-22 | 2003-09-02 | Toyoda Spinning & Weaving Co Ltd | Apparatus and method for manufacturing synthetic resin made hollow molded body |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60189431A (en) * | 1984-03-09 | 1985-09-26 | Toyota Motor Corp | Manufacture of hollow product |
| KR200142838Y1 (en) * | 1996-10-15 | 1999-06-01 | 이두평 | Toilet seat with far-infrared lamp |
| JP4256320B2 (en) * | 2004-09-28 | 2009-04-22 | ダイキョーニシカワ株式会社 | Bonding structure and bonding method of resin molded body |
| KR20130046343A (en) * | 2011-10-27 | 2013-05-07 | 코웨이 주식회사 | Toilet seat and manufacturing method thereof |
| CN102512114B (en) * | 2011-12-31 | 2013-08-14 | 厦门倍恩卫浴有限公司 | Fast automatic disassembling structure of toilet bowl cover plate assembly |
-
2015
- 2015-06-11 JP JP2015118529A patent/JP6275669B2/en active Active
-
2016
- 2016-06-03 CN CN201610389828.XA patent/CN106239903B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09290437A (en) * | 1996-02-26 | 1997-11-11 | Matsushita Electric Works Ltd | Hollow resin product |
| JPH11147265A (en) * | 1997-11-19 | 1999-06-02 | Denso Corp | Production of hollow product made of resin |
| JP2002113785A (en) * | 2000-07-31 | 2002-04-16 | Gp Daikyo Corp | Joining structure for hollow body of synthetic resin and mold structure |
| JP2002225080A (en) * | 2001-02-01 | 2002-08-14 | Kojima Press Co Ltd | Molding method for resin product |
| JP2003245940A (en) * | 2002-02-22 | 2003-09-02 | Toyoda Spinning & Weaving Co Ltd | Apparatus and method for manufacturing synthetic resin made hollow molded body |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018092851A1 (en) * | 2016-11-18 | 2018-05-24 | 児玉化学工業株式会社 | Resin product |
| JP2021159259A (en) * | 2020-03-31 | 2021-10-11 | 児玉化学工業株式会社 | Hand dryer, molding method of hand dryer, and hand washing drying unit |
| JP7446584B2 (en) | 2020-03-31 | 2024-03-11 | 児玉化学工業株式会社 | Hand drying device, method for forming the hand drying device, and hand washing drying unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106239903B (en) | 2018-09-21 |
| CN106239903A (en) | 2016-12-21 |
| JP6275669B2 (en) | 2018-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6275669B2 (en) | Resin products | |
| JP2006218666A (en) | Resin leak preventing structure | |
| TWI344413B (en) | ||
| JP6340489B2 (en) | Resin products | |
| JP6275801B1 (en) | Resin products | |
| JPH11179754A (en) | Injection weld molding method | |
| JP5426143B2 (en) | Manufacturing method of injection molded body | |
| JP6374126B2 (en) | Resin products | |
| JP4462370B2 (en) | Manufacturing method of flush toilet | |
| JP2008119878A (en) | Method for producing hollow body made of synthetic resin | |
| JP2012192604A (en) | Injection molding method | |
| KR20170045794A (en) | Apparatus for preventing resin falling of metal mold for injection molding | |
| CN111867416B (en) | Lock fastener | |
| JP4407810B2 (en) | In-mold coating mold | |
| JP2017205978A (en) | Two-color molded product and method for producing two-color molded product | |
| JP2005288808A (en) | Resin molded article | |
| KR102203055B1 (en) | Door trim and its molding machine and its molding method | |
| JP5004125B2 (en) | Mold for resin molding | |
| JP5687523B2 (en) | Resin molded product and display device | |
| JP4666683B2 (en) | Hollow injection-molded body and method for producing the same | |
| JP2008155470A (en) | Cushion pad for headrest, molding method and molding mold thereof | |
| WO2021065214A1 (en) | Clip and clip manufacturing method | |
| JP2003053792A (en) | Injection-molded article and injection mold | |
| JPH06312433A (en) | Insert two-color molding method | |
| JP4666684B2 (en) | Hollow injection-molded body and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20161110 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20170908 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170912 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20171113 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20171212 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20180110 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6275669 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |