JPS625052B2 - - Google Patents

Info

Publication number
JPS625052B2
JPS625052B2 JP54015908A JP1590879A JPS625052B2 JP S625052 B2 JPS625052 B2 JP S625052B2 JP 54015908 A JP54015908 A JP 54015908A JP 1590879 A JP1590879 A JP 1590879A JP S625052 B2 JPS625052 B2 JP S625052B2
Authority
JP
Japan
Prior art keywords
molded product
resin molded
foamed resin
foamed
layer
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.)
Expired
Application number
JP54015908A
Other languages
Japanese (ja)
Other versions
JPS55107432A (en
Inventor
Shigeo Amagi
Toshikazu Narahara
Hideki Asano
Morimichi Unno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1590879A priority Critical patent/JPS55107432A/en
Publication of JPS55107432A publication Critical patent/JPS55107432A/en
Publication of JPS625052B2 publication Critical patent/JPS625052B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Description

【発明の詳細な説明】 本発明は、発泡樹脂成形品、特に、発泡剤を含
む樹脂成形材料を用いて成形され、その一部に他
部材が接合される発泡樹脂成形品に関するもので
ある。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foamed resin molded product, particularly a foamed resin molded product that is molded using a resin molding material containing a foaming agent and to which other members are joined to a portion thereof.

例えば、内層に発泡量の多い樹脂層を用い、外
層に発泡量の少ない樹脂層を用いた、内層と外層
の発泡量を変えた樹脂成形品は、軽量で断熱効果
が優れているため、冷蔵庫等に使用されるが、こ
のような樹脂成形品に他部材、例えば、モータ、
コンデンサ等を接合する場合には、ボルト、ナツ
トによる締結法、あるいは接着法が用いられる。
For example, resin molded products with different foaming amounts in the inner and outer layers, such as a resin layer with a high foaming amount for the inner layer and a resin layer with a small foaming amount for the outer layer, are lightweight and have excellent heat insulation effects, so they can be used in refrigerators. However, other parts such as motors, etc. can be added to such resin molded products.
When joining capacitors and the like, a fastening method using bolts or nuts, or an adhesive method is used.

第1〜第3図はボルト、ナツトにより締結する
場合を説明するもので、1は発泡樹脂成形品、2
は他部材の接合部材、3はボルト、4はナツト、
5は座金であり、ボルト3を接合部材2の孔と発
泡樹脂成形品1に設けた貫通孔に通し、座金5を
介してナツト4で締結される。しかし、このよう
な締結方法においては、一般に内層と外層との発
泡量を変えた発泡樹脂成形品の圧縮強さ、引張強
さは無発泡の樹脂成形品に比べて低いのみなら
ず、ボルト、ナツトによる締結法においては力を
伝達する面積が小さいため、樹脂材料に生じる応
力が発泡樹脂成形品の強度を超え易い。第2図は
その一例として、樹脂成形品1の両端部を固定し
た状態で、ボルト3にFなる張力と、時計廻りの
回転力Mが働いた場合の状況を示すもので、図に
示すように、発泡樹脂成形品1と接合部材2ある
いは座金5の端部との接続部にはき裂6を生じ
る。また、発泡樹脂成形品の肉厚方向の縦弾性率
は無発泡樹脂成形品に比べて低いため、発泡樹脂
成形品1と接合部材2あるいは座金5との接触面
に十分な摩擦抵抗が得られず、第3図に示すよう
に、ボルト3に直角方向に力Fが働くと、発泡樹
脂成形品1と接合部材2あるいは座合5との間に
滑りを生じやすい。さらに、滑りを生じた後、ボ
ルト3が発泡樹脂成形品1の孔に接触した場合に
は、発泡樹脂成形品1の圧縮強さが低いため、圧
縮破壊部7を生じる場合がある。
Figures 1 to 3 explain the case of fastening with bolts and nuts, 1 is a foamed resin molded product, 2 is a foamed resin molded product,
is a joining member for other parts, 3 is a bolt, 4 is a nut,
Reference numeral 5 designates a washer, and the bolt 3 is passed through a hole in the joining member 2 and a through hole provided in the foamed resin molded product 1, and is fastened with a nut 4 via the washer 5. However, in such fastening methods, compressive strength and tensile strength of foamed resin molded products with different foaming amounts between the inner and outer layers are not only lower than those of non-foamed resin molded products, but also bolts, In the fastening method using nuts, the area for transmitting force is small, so the stress generated in the resin material tends to exceed the strength of the foamed resin molded product. As an example, Fig. 2 shows the situation when both ends of the resin molded product 1 are fixed and a tension F and a clockwise rotational force M are applied to the bolt 3, as shown in the figure. In addition, cracks 6 occur at the connection between the foamed resin molded product 1 and the end of the joining member 2 or washer 5. In addition, since the modulus of longitudinal elasticity in the thickness direction of a foamed resin molded product is lower than that of a non-foamed resin molded product, sufficient frictional resistance can be obtained at the contact surface between the foamed resin molded product 1 and the joining member 2 or the washer 5. First, as shown in FIG. 3, when a force F is applied to the bolt 3 in a direction perpendicular to the bolt 3, slippage is likely to occur between the foamed resin molded product 1 and the joining member 2 or the seat 5. Furthermore, if the bolt 3 comes into contact with the hole in the foamed resin molded product 1 after slippage occurs, a compressive fracture portion 7 may occur because the compressive strength of the foamed resin molded product 1 is low.

第4図および第5図は、接着剤を用いて接合す
る場合を説明するもので、1は発泡樹脂成形品、
2は他部材の接合部材、8は接着層を示しいる。
この方法で接合した場合には、発泡樹脂成形品1
と接合部材2が接着層8を介して十分に接着され
ていても、発泡樹脂成形品1の強度が無発泡樹脂
成形品に比べて低いため、第5図に示すように発
泡樹脂成形品1にき裂6を生じる場合がある。
Figures 4 and 5 explain the case of bonding using adhesive; 1 is a foamed resin molded product;
Reference numeral 2 indicates a joining member for other members, and reference numeral 8 indicates an adhesive layer.
When joined using this method, the foamed resin molded product 1
Even if the bonding member 2 and the bonding member 2 are sufficiently bonded via the adhesive layer 8, the strength of the foamed resin molded product 1 is lower than that of a non-foamed resin molded product. Cracks 6 may occur in some cases.

本発明は、これら問題点を除去し、他部材を強
固に接合できる発泡樹脂成形品を提供することを
目的とするもので、発泡剤を含む樹脂成形材料を
用いて成形した樹脂層の一部に他部材が接合され
る発泡樹脂成形品において、前記発泡樹脂成形品
よりも強度および弾性率の大なる材料よりなり、
前記他部材が接合される接合部の面積より大きい
面積を有し、前記樹脂層中に埋設され該樹脂層に
平行な板状体と、該板状体と一体で前記接合部に
おいて前記外層に露出する柱状体とからなり前記
接合部に加わる集中荷重を分散させる補強部材が
前記発泡樹脂成形品と一体に成形されていること
を特徴とするものである。
The purpose of the present invention is to eliminate these problems and provide a foamed resin molded product that can be firmly bonded to other parts. In a foamed resin molded product to which other members are joined, the foamed resin molded product is made of a material having higher strength and elastic modulus than the foamed resin molded product,
a plate-shaped body having an area larger than the area of the joint part to which the other members are joined, embedded in the resin layer and parallel to the resin layer; A reinforcing member comprising exposed columnar bodies and dispersing concentrated loads applied to the joint portion is molded integrally with the foamed resin molded product.

すなわち、本発明は、発泡剤を含む樹脂成形材
料を用いて成形される発泡樹脂成形品、特に、発
泡量の多い樹脂層よりなる内層と発泡量の少ない
樹脂層よりなる外層とからなる発泡樹脂成形品
は、引張、圧縮などの強さが無発泡樹脂成形品に
比べて低いため、発泡樹脂成形品の他部材を接合
する部分に補強部材を挿入し、発泡樹脂成形品と
一体に成形することにより発泡樹脂成形品の他部
材との接合の強度の向上を可能とするもである。
すなわち、発泡樹脂成形品よりも強度、弾性率の
高い材料を用いた補強部材を挿入することによ
り、接合部に加わる集中荷重を補強部材が入つて
いる範囲全体に分散させることが可能となる。こ
れによつて、発泡樹脂成形品の強さは無発泡樹脂
成形品に比べて低いにも拘らず、十分は接合強度
を得ることが可能となる。
That is, the present invention relates to a foamed resin molded product molded using a resin molding material containing a foaming agent, and in particular, a foamed resin molded product that has an inner layer made of a resin layer with a large amount of foaming and an outer layer made of a resin layer with a small amount of foamed. Molded products have lower tensile and compressive strengths than non-foamed resin molded products, so reinforcing members are inserted into the parts of the foamed resin molded product where other parts are joined, and molded integrally with the foamed resin molded product. This makes it possible to improve the strength of the bond between the foamed resin molded product and other members.
That is, by inserting a reinforcing member made of a material with higher strength and modulus of elasticity than the foamed resin molded product, it is possible to disperse the concentrated load applied to the joint over the entire area where the reinforcing member is inserted. As a result, although the strength of the foamed resin molded product is lower than that of a non-foamed resin molded product, it is possible to obtain sufficient bonding strength.

以下、実施例について説明する。 Examples will be described below.

第6図は、一実施例として、ボルト、ナツトを
用いて他部材を発泡樹脂成形品に接合する場合を
説明するもので、図において、第1図と同一部分
には同一符号が付してあり、10は発泡樹脂成形
品1より強度、弾性率の高い材料よりなる補強部
材で、補強部材10は発泡樹脂成形品1の内層に
位置する円板状の部分101とこれと一体にな
り、ボルト3の貫通孔を有し、その両端面がそれ
ぞれ発泡樹脂成形品の表面に露出している円柱状
の部分102よりなり、補強部材10が他部材の
接合部材2および座金5と直接接触する形になつ
ている。このような補強部材10を用いる場合に
は、他部材の接合部材2に加わる荷重を直接補強
部材10に伝達できるため、接合部材2あるいは
座金5に接触する部分の発泡樹脂成形品の圧縮に
よる破壊を防止でき、高い接合強度を得ることが
できる。一般に、発泡樹脂成形品と他部材の結合
部材をボルト、ナツトを用いて締結する場合に
は、肉厚方向の圧縮強さが低い発泡樹脂成形品の
みでは十分な締結力が得られない。これに対し
て、この実施例では、発泡樹脂成形品内に設けた
補強部材の一部が表面に露出しており、発泡樹脂
成形品より圧縮強度が大きい補強部材が接合部
材、ナツトあるいは座金に直接接触し締結力が伝
わるため高い締結力を得ることができる。さら
に、このようにして他部材の接合されている場合
は、ボルトに直角方向に力が加わつたり、ボルト
の位置が仮にずれたとしても、発泡樹脂成形品よ
り圧縮強度が高い補強部材とボルトが当たるた
め、補強部材が無い場合に比べ破壊強度が強くな
る。
FIG. 6 illustrates an example of joining other parts to a foamed resin molded product using bolts and nuts. In the figure, the same parts as in FIG. 1 are given the same reference numerals. 10 is a reinforcing member made of a material having higher strength and modulus of elasticity than the foamed resin molded product 1, and the reinforcing member 10 is integrated with a disc-shaped portion 101 located in the inner layer of the foamed resin molded product 1, It consists of a cylindrical part 102 that has a through hole for the bolt 3 and whose both end faces are exposed to the surface of the foamed resin molded product, so that the reinforcing member 10 directly contacts the joining member 2 and washer 5 of other members. It's taking shape. When such a reinforcing member 10 is used, the load applied to the joining member 2 of another member can be directly transmitted to the reinforcing member 10, so that the portion of the foamed resin molded product that contacts the joining member 2 or the washer 5 is not destroyed due to compression. can be prevented and high bonding strength can be obtained. Generally, when fastening a connecting member between a foamed resin molded product and another member using bolts or nuts, sufficient fastening force cannot be obtained only with the foamed resin molded product whose compressive strength in the thickness direction is low. In contrast, in this example, a part of the reinforcing member provided inside the foamed resin molded product is exposed on the surface, and the reinforcing member, which has a higher compressive strength than the foamed resin molded product, is attached to the joint member, nut, or washer. Since there is direct contact and the fastening force is transmitted, high fastening force can be obtained. Furthermore, when other parts are joined in this way, even if a force is applied to the bolt in a perpendicular direction or the position of the bolt is shifted, the reinforcing member, which has a higher compressive strength than the foamed resin molded product, and the bolt Because of this, the breaking strength is stronger than when there is no reinforcing member.

第7図は、さらに他の実施例を説明するもので
他部材の接合部材を接着材により接合する場合を
示しており、第4図と同一部分には同一符号が付
してある。第4図の場合と異なる所は、発泡樹脂
成形品の発泡量が多い樹脂層よりなる内層に位置
する円板状の部分111と、これと一体になつて
おりその端面が発泡樹脂成形品の表面に露出して
いる円柱状の部分112とよりなる補強部材11
を有している点である。すなわち、この実施例に
おいては、接合部材2は発泡樹脂成形品1の補強
部材11の発泡樹脂成形品1の表面に露出してい
る円柱状の部分112に接着層8を介して接合さ
れる。このような構造になつているため、発泡樹
脂成形品の強度不足をおぎなうことができ接合部
材に加わる力は直接補強部材11に伝達すること
ができ、このため、補強部材の無い部分に接着材
を用いて接合部材を接合する従来の場合に比べて
高い接合力を得ることができる。
FIG. 7 explains still another embodiment, and shows a case where joining members of other members are joined by an adhesive, and the same parts as in FIG. 4 are given the same reference numerals. The difference from the case shown in Fig. 4 is that there is a disc-shaped portion 111 located in the inner layer of the resin layer with a large amount of foaming of the foamed resin molded product, and its end face is integrated with this. A reinforcing member 11 consisting of a cylindrical portion 112 exposed on the surface
The point is that it has the following. That is, in this embodiment, the joining member 2 is joined to the cylindrical portion 112 of the reinforcing member 11 of the foamed resin molded product 1 exposed on the surface of the foamed resin molded product 1 via the adhesive layer 8. This structure makes up for the lack of strength of the foamed resin molded product, and the force applied to the joining member can be directly transmitted to the reinforcing member 11. Therefore, the adhesive can be applied to the parts where there is no reinforcing member. It is possible to obtain a higher joining force than in the conventional case of joining joining members using the method.

以上の実施例においては、補強部材の主要部、
例えば、第6図の示施例における円板状の部分1
01を樹脂層の内層に配設した例を示したが、こ
の場合には補強部材を発泡樹脂成形品と一体に成
形する場合に発泡剤などから発生したガスが迅速
に移動できる点で効果的であるが、補強部材の主
要部が発泡樹脂成形品の外層の何れか一方側に配
設されている場合、あるいは外層の両方側に配設
されてはいるが、補強部材の主要部に発生ガスの
脱出用の孔が設けられている場合には同様に用い
ることができる。
In the above embodiments, the main parts of the reinforcing member,
For example, the disk-shaped portion 1 in the embodiment shown in FIG.
An example is shown in which 01 is disposed in the inner layer of the resin layer, but in this case, it is effective in that the gas generated from the foaming agent etc. can move quickly when the reinforcing member is integrally molded with the foamed resin molded product. However, if the main part of the reinforcing member is placed on either side of the outer layer of the foamed resin molded product, or even if the main part of the reinforcing member is placed on both sides of the outer layer, The same can be used if holes are provided for gas escape.

また、以上の実施例においては、発泡樹脂成形
品と他部材との接合を接合部材を介して結合した
例について説明したが、ここで用いる補強部材の
端部を他部材の接合部材と一体に形成しておき、
他部材を直接補強部材に接合するようにすること
もできる。
In addition, in the above embodiment, an example was explained in which the foamed resin molded product and other members were joined via a joining member, but the end of the reinforcing member used here was integrated with the joining member of the other member. Form it,
It is also possible to directly join other members to the reinforcing member.

なお、実施例の発泡樹脂成形品を構成する樹脂
にはポリウレタンが最も一般的に使われ、これに
対して、補強部材としてはABS(アクリロニト
リル、ブタジエンゴム、スチレン共重体)樹脂が
用いられるが、この組合せに限定されるものでは
なく、発泡樹脂成形品よりも強度および弾性率の
大なる材料であれば、補強部材として使用するこ
とができる。
Note that polyurethane is most commonly used as the resin constituting the foamed resin molded product in the examples, whereas ABS (acrylonitrile, butadiene rubber, styrene copolymer) resin is used as the reinforcing member. The combination is not limited to this, and any material having higher strength and elastic modulus than the foamed resin molded product can be used as the reinforcing member.

以上の如く、本発明の発泡樹脂成形品は、他の
接合部材を強固に接合することを可能にするも
で、産業上の効果の大なるものである。
As described above, the foamed resin molded product of the present invention enables other joining members to be firmly joined, and has great industrial effects.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図、第2図および第3図は、従来の発泡樹
脂成形品と他部材との接合状態を説明するための
断面図、第4図および第5図は、同じく他の接合
状態を説明する断面図、第6図および第7図は、
本発明の発泡樹脂成形品のそれぞれ異なる実施例
の断面図である。 1…発泡樹脂成形品、2…(他部材の)接合部
材、3…ボルト、4…ナツト、5…座金、8…接
着層、10,11…補強部材。
Figures 1, 2, and 3 are cross-sectional views for explaining the bonding state between a conventional foamed resin molded product and other parts, and Figures 4 and 5 similarly illustrate other bonding states. The sectional views, Figures 6 and 7, are
FIG. 3 is a cross-sectional view of different embodiments of the foamed resin molded product of the present invention. DESCRIPTION OF SYMBOLS 1... Foamed resin molded product, 2... Joining member (of other members), 3... Bolt, 4... Nut, 5... Washer, 8... Adhesive layer, 10, 11... Reinforcement member.

Claims (1)

【特許請求の範囲】 1 発泡剤を含む樹脂成形材料を用いて成形され
た樹脂層の一部に他部材が接合される発泡樹脂成
形品において、前記発泡樹脂成形品よりも強度お
よび弾性率の大なる材料よりなり、前記他部材が
接合される接合部の面積より大きい面積を有し、
前記樹脂層中に埋設され該樹脂層に平行な板状体
と、該板状体と一体で前記接合部において前記外
層に露出する柱状体とからなり前記接合部に加わ
る集中荷重を分散させる補強部材が前記発泡樹脂
成形品と一体に成形されていることを特徴とする
発泡樹脂成形品。 2 前記発泡樹脂成形品が、発泡量の多い樹脂層
よりなる内層部と発泡量の少ない樹脂層よりなる
外層部とから構成され、前記板状体が前記内層部
に埋設されている特許請求の範囲第1項記載の発
泡樹脂成形品。 3 前記柱状体が、その端面において前記他部材
との接合部を構成している特許請求の範囲第1項
記載の発泡樹脂成形品。
[Scope of Claims] 1. A foamed resin molded product in which another member is bonded to a part of a resin layer molded using a resin molding material containing a foaming agent, which has higher strength and elastic modulus than the foamed resin molded product. It is made of a large material and has an area larger than the area of the joint where the other member is joined,
Reinforcement for dispersing concentrated loads applied to the joint, comprising a plate-like body embedded in the resin layer and parallel to the resin layer, and a columnar body integral with the plate-like body and exposed to the outer layer at the joint. A foamed resin molded product, characterized in that the member is integrally molded with the foamed resin molded product. 2. The foamed resin molded product is composed of an inner layer part made of a resin layer with a large amount of foaming and an outer layer part made of a resin layer with a small amount of foamed, and the plate-shaped body is embedded in the inner layer part. A foamed resin molded product according to scope 1. 3. The foamed resin molded article according to claim 1, wherein the columnar body constitutes a joint portion with the other member at an end surface thereof.
JP1590879A 1979-02-14 1979-02-14 Molded product by foaming resin Granted JPS55107432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1590879A JPS55107432A (en) 1979-02-14 1979-02-14 Molded product by foaming resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1590879A JPS55107432A (en) 1979-02-14 1979-02-14 Molded product by foaming resin

Publications (2)

Publication Number Publication Date
JPS55107432A JPS55107432A (en) 1980-08-18
JPS625052B2 true JPS625052B2 (en) 1987-02-03

Family

ID=11901863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1590879A Granted JPS55107432A (en) 1979-02-14 1979-02-14 Molded product by foaming resin

Country Status (1)

Country Link
JP (1) JPS55107432A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6063241U (en) * 1983-10-08 1985-05-02 愛知株式会社 Top plates of tables, desks, etc.
JPS6283056U (en) * 1985-11-14 1987-05-27
US5427449A (en) * 1991-11-05 1995-06-27 Mcneilus Truck And Manufacturing, Inc. Concrete mixing drum fin structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS519153A (en) * 1974-07-12 1976-01-24 Pirelli
JPS5173090A (en) * 1975-11-13 1976-06-24 Satsuki Kitani GOSEIMOKUZAI
JPS5345113U (en) * 1976-09-16 1978-04-18

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114369U (en) * 1975-03-11 1976-09-16

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS519153A (en) * 1974-07-12 1976-01-24 Pirelli
JPS5173090A (en) * 1975-11-13 1976-06-24 Satsuki Kitani GOSEIMOKUZAI
JPS5345113U (en) * 1976-09-16 1978-04-18

Also Published As

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