JPH07246623A - Deformation-proofing structure of resin molded article - Google Patents
Deformation-proofing structure of resin molded articleInfo
- Publication number
- JPH07246623A JPH07246623A JP6040847A JP4084794A JPH07246623A JP H07246623 A JPH07246623 A JP H07246623A JP 6040847 A JP6040847 A JP 6040847A JP 4084794 A JP4084794 A JP 4084794A JP H07246623 A JPH07246623 A JP H07246623A
- Authority
- JP
- Japan
- Prior art keywords
- side wall
- locking
- lock
- side walls
- molded product
- 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
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Details Of Indoor Wiring (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、底部の両側から同方向
に一対の側壁がそれぞれ一体成形された略Ｕ字状の樹脂
成形品において、側壁の内側への倒れを防止する樹脂成
形品の変形防止構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substantially U-shaped resin molded product in which a pair of side walls are integrally molded from both sides of a bottom portion in the same direction. Deformation prevention structure.
【０００２】[0002]
【従来の技術】図４は、ワイヤーハーネスが収容される
プロテクタ１（樹脂成形品）を示す。プロテクタ１はワ
イヤーハーネスが収容されるプロテクタ本体３と、この
プロテクタ本体３の上部を閉止する蓋体５とからなる。
プロテクタ本体３は、底部７の両側から同方向に一対の
側壁９ａ、９ｂが一体成形されて略Ｕ字状に形成されて
いる。蓋体５は平板状で両側部が同方向に折り曲げら
れ、下方に向けて一対のロックアーム１１が両側部１３
ａ、１３ｂにそれぞれ一体成形されている。これらのロ
ックアーム１１には、それぞれ係止突起１５が突設され
ている。2. Description of the Related Art FIG. 4 shows a protector 1 (resin molded product) in which a wire harness is housed. The protector 1 includes a protector body 3 in which a wire harness is housed, and a lid 5 that closes the upper part of the protector body 3.
The protector body 3 is formed in a substantially U-shape by integrally forming a pair of side walls 9a and 9b in the same direction from both sides of the bottom portion 7. The lid 5 has a flat plate shape, and both sides thereof are bent in the same direction.
a and 13b are integrally molded. Locking protrusions 15 are provided on the lock arms 11 in a protruding manner.
【０００３】一方、プロテクタ本体３の側壁９ａ、９ｂ
の外周にはそれぞれ係止枠１７が形成されている。この
係止枠１７と側壁９ａ、９ｂとで囲まれる係止穴１９内
に上記ロックアーム１１を挿通し、係止突起１５の上端
部を係止枠１７の下端部に係止することで、蓋体５がプ
ロテクタ本体３に保持されるようになっている。On the other hand, the side walls 9a and 9b of the protector body 3
A locking frame 17 is formed on the outer periphery of each of the. By inserting the lock arm 11 into the locking hole 19 surrounded by the locking frame 17 and the side walls 9a and 9b, and locking the upper end of the locking projection 15 to the lower end of the locking frame 17, The lid 5 is held by the protector body 3.
【０００４】ところで、上記プロテクタ本体３を合成樹
脂で射出成形すると、成形後の温度の低下による収縮で
一対の側壁９ａ、９ｂが内側に倒れ込み、係止枠１７、
１７間が狭くなる。このため、一対のロックアーム１
１、１１間に対して係止穴１９、１９間の距離が狭くな
り、ロックアーム１１を係止穴１９に挿通させにくくな
り、ロック作業に手間がかかる。By the way, when the protector body 3 is injection-molded from synthetic resin, the pair of side walls 9a and 9b fall inward due to contraction due to a decrease in temperature after molding, and the locking frame 17,
The space between 17 becomes narrower. Therefore, the pair of lock arms 1
The distance between the locking holes 19 and 19 is narrower than the distance between the locking holes 1 and 11, and it becomes difficult to insert the lock arm 11 into the locking hole 19, so that the locking work is troublesome.
【０００５】そこで、側壁９ａ、９ｂの成形後の倒れ込
みを防止したプロテクタが特開昭６４−７２８２１号公
報で提案されている。図５（ａ）に示すプロテクタは、
底部７と側壁９ａとの連結部の厚みを底部７の厚みｔの
１／２としている。また、図５（ｂ）に示すプロテクタ
は側壁９ａの直前位置の底部７の厚みを底部７の厚みｔ
の１／２としている。Therefore, Japanese Patent Laid-Open No. 64-72821 proposes a protector which prevents the side walls 9a and 9b from falling after molding. The protector shown in FIG.
The thickness of the connecting portion between the bottom portion 7 and the side wall 9a is ½ of the thickness t of the bottom portion 7. Further, in the protector shown in FIG. 5B, the thickness of the bottom portion 7 immediately before the side wall 9a is set to the thickness t of the bottom portion 7.
It is set to 1/2.
【０００６】[0006]
【発明が解決しようとする課題】ところが、上記公報で
開示されたプロテクタにおいても、成形条件によっては
側壁９ａ、９ｂの内側への倒れ込みを確実に防止するこ
とが出来なかった。このため、本出願人は、実開平５−
４１３２９号公報で、図６に示すように両側壁９ａ、９
ｂの内側への倒れ込み防止部材２３を両側壁９ａ、９ｂ
間に破断可能に設けたプロテクタ２５を提案している。However, even in the protector disclosed in the above publication, it is not possible to reliably prevent the side walls 9a and 9b from falling inward depending on the molding conditions. Therefore, the applicant of the present invention
No. 41329, both side walls 9a, 9
b to the inside of the falling prevention member 23 on both side walls 9a, 9b
A protector 25 provided so as to be breakable is proposed.
【０００７】しかしながら、このプロテクタ２５では、
プロテクタ本体３内にワイヤーハーネスを収容する場合
には、倒れ込み防止部材２３をプロテクタ本体３から破
断して取り除く作業が必要であり、作業工数が増えると
共に、無駄に部材（倒れ込み防止部材２３）を必要と
し、さらにプロテクタ２５を成形するための金型の構造
も複雑になるので、製造コストが高くつくという問題が
ある。However, in this protector 25,
When accommodating the wire harness in the protector body 3, it is necessary to break and remove the fall-in prevention member 23 from the protector body 3, which increases the number of working steps and wastefully requires the member (the fall-in prevention member 23). In addition, since the structure of the mold for molding the protector 25 is complicated, the manufacturing cost is high.
【０００８】また、本出願人は、実開平５−１５４８７
９号公報で、図７に示すように、略三角形状の倒れ込み
防止リブ２７を、底部７と一対の側壁９ａ、９ｂの連続
部分の外側に設けたプロテクタ２９を提案している。こ
のプロテクタ２９では、成形後に温度が低下してくる
と、三角形状の倒れ込み防止リブ２７が、側壁９ａ、９
ｂを外側に引っ張ることにより、側壁９ａ、９ｂの内側
への倒れ込みを低減するするようになっている。[0008] The applicant of the present invention has also filed in Japanese Utility Model Publication No. 5-15487.
Japanese Patent Laid-Open No. 9-1997 proposes a protector 29 in which a collapse prevention rib 27 having a substantially triangular shape is provided outside a continuous portion of a bottom portion 7 and a pair of side walls 9a and 9b, as shown in FIG. In this protector 29, when the temperature drops after molding, the triangular fall-in prevention ribs 27 cause the side walls 9 a, 9 to fall.
By pulling b outward, the collapse of the side walls 9a and 9b inward is reduced.
【０００９】ところが、このプロテクタ２９では、成形
後の側壁９ａ、９ｂの倒れ込みは防止することが出来る
が、蓋体５でプロテクタ本体３の上部を閉鎖する際に、
ロックアーム１１を係止穴１９内に挿入しずらい。すな
わち、蓋体５のロックアーム１１を係止穴１９内に挿入
する場合、プロテクタ本体３の両側を持って位置合わせ
をする際に側壁９ａ、９ｂが内側に押されて倒れ込み、
ロックアーム１１、１１間より係止穴１９、１９間の距
離が狭くなってしまい、ロックアーム１１を係止穴１９
に挿入しずらい。このため、プロテクタ本体３を持つこ
となく蓋体５のロックアーム１１を係止穴１９に挿入し
ようとすると、位置決めのための目安がないので、ロッ
クアーム１１を係止穴１９に挿入しにくい。そこで、本
発明は、底壁の両側から一対の側壁が同方向にそれぞれ
一体成形された略Ｕ字状の樹脂成形品において、側壁の
倒れ込みを低減することが出来ると共に、相手方の係止
部にロック部を容易にロックすることが出来る樹脂成形
品の変形防止構造の提供を目的とする。However, although the protector 29 can prevent the side walls 9a and 9b from being collapsed after molding, when the upper portion of the protector body 3 is closed by the lid body 5,
It is difficult to insert the lock arm 11 into the locking hole 19. That is, when the lock arm 11 of the lid 5 is inserted into the locking hole 19, the side walls 9a and 9b are pushed inward when the holder body 3 is held by both sides and aligned, and falls.
Since the distance between the locking holes 19 and 19 is narrower than that between the lock arms 11 and 11, the lock arm 11 is locked into the locking holes 19 and 19.
Hard to insert into. Therefore, if the lock arm 11 of the lid body 5 is to be inserted into the locking hole 19 without the protector body 3, it is difficult to insert the lock arm 11 into the locking hole 19 because there is no standard for positioning. Therefore, in the present invention, in a substantially U-shaped resin molded product in which a pair of side walls are integrally molded in the same direction from both sides of the bottom wall, it is possible to reduce the collapse of the side walls and to prevent the other side from engaging with the locking portion. An object of the present invention is to provide a structure for preventing deformation of a resin molded product that can easily lock the lock portion.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
請求項１記載の発明では、底部の両側から一対の側壁が
同方向にそれぞれ一体成形された略Ｕ字状の成形品本体
と、側壁の端部に設けられて相手方係止部に係合するロ
ック部とを備えた樹脂成形品の変形防止構造において、
少なくとも一方の側壁に、前記ロック部から前記底壁に
向けて、前記側壁の内側への倒れを阻止する倒れ込み防
止リブを連続して側壁に一体に形成したことを特徴とし
ている。In order to achieve the above object, according to the invention of claim 1, a pair of side walls are integrally molded from both sides of the bottom part in the same direction, respectively, and a substantially U-shaped molded body, and the side wall. In a structure for preventing deformation of a resin molded product, which is provided at an end part of a lock part that engages with a mating locking part,
At least one of the side walls is continuously formed integrally with the side wall with a collapse prevention rib that prevents the side wall from falling toward the bottom wall from the lock portion.
【００１１】請求項２記載の発明では、請求項１記載の
発明であって、倒れ込み防止リブが、側壁に対して略直
角方向にそれぞれ突設すると共に、所定の間隔をあけて
略平行に設けられた２枚の板状部からなることを特徴と
している。According to a second aspect of the present invention, in the first aspect of the invention, the collapse preventing ribs are provided so as to project in a direction substantially perpendicular to the side wall, and are provided in parallel with each other at a predetermined interval. It is characterized in that it is composed of two plate-shaped parts.
【００１２】請求項３記載の発明では、請求項１、２記
載の発明であって、倒れ込みリブが、一方の側壁の端部
のロック部から底壁を周回し他方の側壁の端部のロック
部まで連続して成形品本体に一体形成されていることを
特徴としている。According to a third aspect of the invention, in the first and second aspects of the invention, the collapsing rib goes around the bottom wall from the lock portion at the end of one side wall and locks at the end of the other side wall. It is characterized in that the parts are continuously formed integrally with the molded product body.
【００１３】[0013]
【作用】請求項１の発明によれば、倒れ込み防止部材を
ロック部から底壁に向かって側壁に一体に成形すること
により、樹脂成形品を成形した後に、倒れ込み防止部材
の収縮により側壁の内側への倒れ込みが低減される。す
なわち、金型内に溶融した樹脂を射出すると、板部材を
形成する金型部分に樹脂が先に充填され、先に充填され
た樹脂は金型の表面と接する。このため、板部材を形成
する部分から先に冷却が始まる。この結果、板部材部分
の冷却による収縮が先に始まり、板部材部分より遅れて
冷却が始まる側壁部分を外側に引っ張ることになり、側
壁の内側への倒れ込みが低減される。また、相手方の係
止部にロック部を係合させる場合、倒れ込み防止リブが
形成されている部分を底壁側から押すことにより、倒れ
込み防止リブがロック部と相手方係止部との位置合わせ
の目安となり、容易に係合させることが出来る。According to the first aspect of the present invention, the collapse prevention member is integrally formed on the side wall from the lock portion toward the bottom wall, so that after the resin molded product is molded, the collapse prevention member shrinks to form the inside of the side wall. Falling into the area is reduced. That is, when the molten resin is injected into the mold, the resin forming the plate member is first filled with the resin, and the previously filled resin comes into contact with the surface of the mold. For this reason, cooling starts first from the portion forming the plate member. As a result, the contraction of the plate member portion due to cooling starts first, and the side wall portion where cooling starts later than the plate member portion is pulled outward, and the collapse of the side wall to the inside is reduced. Also, when engaging the lock part with the mating locking part, by pushing the part where the collapse prevention rib is formed from the bottom wall side, the collapse preventing rib aligns the lock part with the mating locking part. It serves as a guide and can be easily engaged.
【００１４】請求項２の発明によれば、側壁に対して略
直角方向に立設する板部材で倒れ込み防止リブを形成す
ることにより、成形した後に内側への側壁の倒れ込みが
低減される。この場合、２枚の板部材を略平行に側壁か
ら突設させることにより、板部材の冷却による収縮時に
側壁を外側へ引っ張る力が強く働くため、側壁の内側へ
の倒れ込み量をより少なくすることが出来る。According to the second aspect of the present invention, since the collapse preventing rib is formed by the plate member standing upright in a direction substantially perpendicular to the side wall, the collapse of the side wall to the inside after molding is reduced. In this case, by projecting the two plate members substantially parallel to each other from the side wall, the force of pulling the side wall outward when contracting due to cooling of the plate member acts strongly, so that the amount of collapse of the side wall to the inside can be further reduced. Can be done.
【００１５】請求項３の発明によれば、倒れ込み防止リ
ブを一方の側壁の端部のロック部から底壁を周回し、他
方の側壁の端部のロック部まで連続して形成することに
より、側壁の内側への倒れ込みをより少なくすることが
出来る。また、ロック部を相手方の係止部と係合させる
場合、底壁を周回する倒れ込み防止リブを押圧すれば、
この押圧力が倒れ込み防止リブを伝わって、ロック部に
直接加わり、ロック部を相手方の係止部に容易に係合す
ることが出来る。さらに、一方の側壁から底壁を周回し
て他方の側壁まで倒れ込み防止リブが形成されているの
で、両側の側壁及び底壁が補強される。According to the third aspect of the present invention, the collapse prevention rib is formed continuously from the lock portion at the end of one side wall to the circumference of the bottom wall to the lock portion at the end of the other side wall. It is possible to further reduce the collapse of the side wall to the inside. In addition, when the locking portion is engaged with the locking portion on the other side, if the collapse prevention rib that goes around the bottom wall is pressed,
This pressing force is transmitted to the collapse prevention rib and directly applied to the lock portion, so that the lock portion can be easily engaged with the locking portion of the other party. Further, since the collapse prevention ribs are formed from one side wall to the other side wall around the bottom wall, the side walls and the bottom wall on both sides are reinforced.
【００１６】[0016]
【実施例】以下、本発明に係る樹脂成形品の変形防止構
造が適用されたコネクタカバー（樹脂成形品）３１の実
施例について説明する。なお、図１は、コネクタカバー
３１とコネクタブロック３３を示す斜視図、図２
（ａ）、（ｂ）は、コネクタカバー３１とコネクタブロ
ック３３とを示す側面図である。コネクタカバー３１
は、複数個の図示しないコネクタを装着したコネクタブ
ロック３３の背面側に取り付けられて、コネクタの後端
部から引き出された電線を収容し、コネクタの後端部及
び電線を保護する。EXAMPLE An example of a connector cover (resin molded product) 31 to which the deformation preventing structure for a resin molded product according to the present invention is applied will be described below. 1 is a perspective view showing the connector cover 31 and the connector block 33, and FIG.
(A), (b) is a side view which shows the connector cover 31 and the connector block 33. Connector cover 31
Is attached to the back side of the connector block 33 having a plurality of connectors (not shown) mounted thereon, accommodates the electric wire drawn from the rear end of the connector, and protects the rear end and the electric wire of the connector.
【００１７】図１に示すように、コネクタカバー３１
は、底壁３５の両側部から側壁３７、３９が同方向にそ
れぞれ一体成形されたＵ字状のカバー本体４１に、コネ
クタブロック３３の係止部４３に係合するロック部４５
が形成されている。Ｕ字状のカバー本体４１の内側に
は、コネクタブロック３３のコネクタの後端から引き出
された電線を収容する収容部４７が形成され、この収容
部４７の両側の開口が電線引き出し口４９、４９となっ
ている。この電線引き出し口４９、４９の一部は、底壁
３５の長手方向に延出されて電線固定部６５、６５が形
成されている。この電線固定部６５、６５には、収容部
４７内に収容された複数本の電線がテープ等により結束
されて固定される。As shown in FIG. 1, the connector cover 31
Is a lock portion 45 that engages with a locking portion 43 of the connector block 33 on a U-shaped cover body 41 in which side walls 37 and 39 are integrally molded in the same direction from both sides of the bottom wall 35.
Are formed. Inside the U-shaped cover body 41, there is formed an accommodating portion 47 for accommodating the electric wire pulled out from the rear end of the connector of the connector block 33, and the openings on both sides of the accommodating portion 47 have electric wire outlets 49, 49. Has become. Part of the electric wire outlets 49, 49 extends in the longitudinal direction of the bottom wall 35 to form electric wire fixing portions 65, 65. A plurality of electric wires accommodated in the accommodating portion 47 are bundled and fixed to the electric wire fixing portions 65, 65 with a tape or the like.
【００１８】底壁３５の一方の側部に、底壁３５に対し
て略直角に屈曲した側壁３７は、平板状で、底壁３５の
反対側の端部は外側に略直角に屈曲した後に、他方の側
壁３９と略平行に再び屈曲された段部３６が形成されて
いる。この段部３６より先端側に、ロック部４５、４５
が形成されている。On one side of the bottom wall 35, a side wall 37 bent substantially at a right angle to the bottom wall 35 is flat, and the opposite end of the bottom wall 35 is bent at a substantially right angle to the outside. The step portion 36 that is bent again substantially parallel to the other side wall 39 is formed. The lock portions 45, 45 are provided on the tip side of the step portion 36.
Are formed.
【００１９】ロック部４５は、側壁３７の先端部から延
出された挿入板部７９と、この挿入板部７９の先端部の
外側に形成された鉤部８１とからなる。鉤部８１には、
先端部から底壁３５側に向けて上り傾斜の斜面８３が形
成されている。このロック部４５から底壁３５に向けて
倒れ込み防止リブ５３が、側壁３７と一体に形成されて
いる。The lock portion 45 comprises an insertion plate portion 79 extending from the tip of the side wall 37 and a hook portion 81 formed outside the tip of the insertion plate portion 79. The hook 81 has
A slope 83 is formed which is inclined upward from the tip end toward the bottom wall 35. The collapse prevention rib 53 from the lock portion 45 toward the bottom wall 35 is formed integrally with the side wall 37.
【００２０】倒れ込み防止リブ５３は、側壁３７に対し
て略直角にそれぞれ突設すると共に、所定の間隔をあけ
て略平行に設けられた２枚の板状部５５、５５からな
る。これらの板状部５５、５５は、ロック部４５の底壁
３５側の段部３６から、側壁３７と底壁３５とを連結す
る傾斜壁５１まで連続して形成されている。これらの板
状部５５、５５の側壁３７からの高さは、段部３６の高
さに等しく、その厚みは側壁３７の厚みに略等しく設定
されている。The falling-down prevention ribs 53 project from the side wall 37 at substantially right angles, and are composed of two plate-like portions 55, 55 which are provided substantially parallel to each other with a predetermined gap. These plate-shaped portions 55, 55 are continuously formed from the step portion 36 on the bottom wall 35 side of the lock portion 45 to the inclined wall 51 connecting the side wall 37 and the bottom wall 35. The height of these plate-like portions 55, 55 from the side wall 37 is equal to the height of the step portion 36, and the thickness thereof is set to be substantially equal to the thickness of the side wall 37.
【００２１】一方、底壁３５の他方の側部に、底壁３５
に対して略直角に屈曲した側壁３９は、途中で外側に屈
曲した後に一方の側壁３７と略平行に再び屈曲された段
部５７が形成され、さらに、その先端部には、外側に広
がる段部５８が形成されている。この段部５８の先端側
には、側壁３７と同様にロック部５９、５９が形成され
ている。このロック部５９は、上述したロック４５と同
様に、挿入板部７９と、鉤部８１とからなり、鉤部８１
には斜面８３が形成されている。このロック部５９、５
９から段部５７にかけて、側壁３９の外周からは、側壁
３９に対して略直交する方向に突設する倒れ込み防止リ
ブ６１が形成されている。On the other hand, on the other side of the bottom wall 35, the bottom wall 35
A side wall 39 that is bent substantially at a right angle with respect to the side wall is formed with a step portion 57 that is bent halfway outward and then is bent again substantially parallel to the one side wall 37. The portion 58 is formed. Similar to the side wall 37, lock portions 59, 59 are formed on the tip side of the step portion 58. Like the lock 45 described above, the lock portion 59 includes an insertion plate portion 79 and a hook portion 81, and the hook portion 81.
A slope 83 is formed on the. These lock parts 59, 5
From the outer periphery of the side wall 39 from 9 to the step portion 57, a collapse prevention rib 61 protruding in a direction substantially orthogonal to the side wall 39 is formed.
【００２２】倒れ込み防止リブ６１は、側壁３９に設け
た倒れ込み防止リブ５３より長さが短く、側壁３９に対
して略直角方向にそれぞれ突設されると共に、所定の間
隔をあけて略平行に設けられた２枚の板状部６３、６３
からなる。これらの板状部６３、６３は、側壁３９から
の高さが段部５８の高さに等しく、その厚みは側壁３９
の厚みに略等しく設定されている。The collapse preventing ribs 61 have a shorter length than the collapse preventing ribs 53 provided on the side wall 39, are provided so as to project in a direction substantially perpendicular to the side wall 39, and are provided substantially in parallel at a predetermined interval. Two plate-shaped parts 63, 63
Consists of. These plate-shaped portions 63, 63 have a height from the side wall 39 equal to that of the step portion 58, and a thickness thereof.
Is set approximately equal to the thickness of the.
【００２３】このような、コネクタカバー３１が、背面
側に取り付けられるコネクタブロック３３は、ブロック
状の本体６７に、図示しないコネクタが装着される筒状
のコネクタ装着部６９、６９が形成されている。また、
本体６７の外周には、係止部４３、４３が形成されてい
る。この係止部４３は、本体６７の上面６７ａから突設
された断面コ字型の可撓性の係止枠部７３と、この係止
枠部７３で囲まれる内部に形成された係止孔７５とから
なる。係止枠部７３の縁部は、図２（ａ）、（ｂ）に示
すように、上り傾斜の斜面７７が形成されている。そし
て、係止孔７５内にロック部４５、５９が挿入される
と、前記斜面８３と斜面７７とが摺動して係止枠部７３
が撓むようになっている。In such a connector block 33 to which the connector cover 31 is attached on the back side, a block-shaped main body 67 is provided with cylindrical connector mounting portions 69, 69 on which connectors (not shown) are mounted. . Also,
Locking portions 43, 43 are formed on the outer periphery of the main body 67. The locking portion 43 includes a flexible locking frame portion 73 having a U-shaped cross section and protruding from the upper surface 67 a of the main body 67, and a locking hole formed inside the locking frame portion 73. And 75. As shown in FIGS. 2A and 2B, the edge portion of the locking frame portion 73 is formed with an inclined slope 77. Then, when the lock portions 45 and 59 are inserted into the locking hole 75, the slope 83 and the slope 77 slide and the locking frame portion 73.
Is designed to bend.
【００２４】次に、コネクタブロック３３の後端部にコ
ネクタカバー３１を装着する手順について説明する。先
ず、図２（ａ）に示すように、コネクタブロック３３の
背面側にコネクタカバー３１を位置合わせした後に、底
壁３５の外周部分を指等により押圧して、ロック部４
５、５９の挿入板部７９を係止孔７５内に挿入する。挿
入板部７９を係止孔７５内に挿入すると、斜面８３が斜
面７７に摺動して、係止枠部７３を撓ませ、鉤部８１が
係止孔７５を挿通する。係止孔７５内を鉤部８１が挿通
すると、鉤部８１と係止枠部７３とが係合して、コネク
タカバー３１がコネクタブロック３３の背面側に取り付
けられる。Next, a procedure for mounting the connector cover 31 on the rear end portion of the connector block 33 will be described. First, as shown in FIG. 2A, after aligning the connector cover 31 with the rear surface side of the connector block 33, the outer peripheral portion of the bottom wall 35 is pressed with a finger or the like to lock the lock portion 4.
The insertion plate portions 79 of 5, 59 are inserted into the locking holes 75. When the insertion plate portion 79 is inserted into the locking hole 75, the slope 83 slides on the slope 77 to bend the locking frame portion 73, and the hook 81 inserts the locking hole 75. When the hook portion 81 is inserted through the locking hole 75, the hook portion 81 and the locking frame portion 73 are engaged with each other, and the connector cover 31 is attached to the rear surface side of the connector block 33.
【００２５】上記動作において、ロック部４５、５９を
係止孔７５内に挿入しようとする場合、倒れ込み防止リ
ブ５３、６１の延長上にロック部４５、５９が形成され
ているので、この倒れ込み防止リブ４５、５９を目安に
して、ロック部４５、５９を係止部４３の係止孔７５内
に容易に位置合わせすることが出来る。また、底壁３５
を押圧する場合にも、倒れ込み防止リブ５３、６１に対
応する部分を押せば、ロック部４５、５９にこの押圧力
が効率良く伝わり、係止孔７５内にロック部４５、５９
を容易に挿入することが出来る。In the above operation, when the lock portions 45 and 59 are to be inserted into the locking holes 75, the lock portions 45 and 59 are formed on the extension of the collapse prevention ribs 53 and 61. Using the ribs 45 and 59 as a guide, the lock portions 45 and 59 can be easily positioned in the locking holes 75 of the locking portion 43. Also, the bottom wall 35
Also when pressing, the pressing force is efficiently transmitted to the lock portions 45 and 59 by pushing the portions corresponding to the collapse prevention ribs 53 and 61, and the lock portions 45 and 59 are inserted into the locking holes 75.
Can be easily inserted.
【００２６】また、本実施例のコネクタカバー３１は、
樹脂による射出成形後に生じる側壁３７、３９の内側へ
の倒れ込みが、倒れ込み防止リブ５３、６１により低減
されている。すなわち、側壁３７、３９の外側に倒れ込
み防止リブ５３、６１を一体に成形することにより、金
型内に溶融した樹脂を射出すると、倒れ込み防止リブ５
３、６１の部分が先に充填されて金型に接触し、先に冷
却が始まる。このため、倒れ込み防止リブ５３、６１よ
り遅れて冷却が始まる側壁部分より倒れ込み防止リブ５
３、６１は先に収縮するため、遅れて収縮する側壁３
７、３９を外側へ引っ張ることになり、結果として、側
壁３７、３９の内側への倒れ込みが低減される。さら
に、本実施例のコネクタカバー３１は、側壁３７、３９
の外面に倒れ込み防止リブ５３、６１が形成されている
ので、側壁３７、３９を補強することが出来る。従っ
て、側壁３７、３９の厚みを薄くすることが可能とな
り、コストを低減することが出来る。Further, the connector cover 31 of this embodiment is
The fall-in prevention ribs 53 and 61 reduce the fall of the side walls 37 and 39 into the inside after injection molding with resin. That is, when the melted resin is injected into the mold by integrally forming the collapse prevention ribs 53 and 61 on the outside of the side walls 37 and 39, the collapse prevention rib 5
The portions 3, 61 are filled first and come into contact with the mold, and cooling starts first. Therefore, the collapse prevention ribs 5 are delayed from the side wall portions where cooling starts later than the collapse prevention ribs 53 and 61.
Side walls 3, 3 and 61 contract later, because they contract earlier.
7 and 39 are pulled outward, and as a result, the collapse of the side walls 37 and 39 inward is reduced. Further, the connector cover 31 of the present embodiment has the side walls 37, 39.
Since the collapse prevention ribs 53 and 61 are formed on the outer surface of the side wall, the side walls 37 and 39 can be reinforced. Therefore, the thickness of the side walls 37 and 39 can be reduced, and the cost can be reduced.
【００２７】次に、図３に示す他の実施例について説明
する。本実施例のコネクタカバー８５は、側壁３７の端
部のロック部４５から底壁３５を周回し、他方の側壁３
９の端部のロック部５９まで連続する倒れ込み防止リブ
８７が、側壁３７、３９、底壁３５に一体に形成されて
いる。Next, another embodiment shown in FIG. 3 will be described. The connector cover 85 of the present embodiment circulates around the bottom wall 35 from the lock portion 45 at the end of the side wall 37, and the other side wall 3
A fall prevention rib 87 that continues to the lock portion 59 at the end of 9 is formed integrally with the side walls 37, 39 and the bottom wall 35.
【００２８】このように、倒れ込み防止リブ８７を形成
することにより、ロック部４５、５９の位置の目印とな
ると共に、ロック部４５、５９を係止部４３に係合させ
るときに押圧力をロック部４５、５９に効率良く伝える
ことが出来る。また、側壁３７、３９の内側への倒れ込
みを低減することが出来ると共に、側壁３７、３９の機
械的強度が補強され、側壁３７、３９の厚みを薄くする
ことが可能となる。なお、上述した実施例では、樹脂成
形品としてＵ字状のコネクタカバー３１について説明し
たが、本発明に係る樹脂成形品の変形防止構造は、Ｕ字
状のプロテクタ、カバー及び蓋にも適用することが出来
る。さらに、倒れ込み防止リブは、一枚の板状部で構成
しても良く、３枚以上の板状部で構成しても良いが、２
枚の板状部で構成するのが、形状やコストの点を考慮す
ると好ましい。By forming the collapse prevention rib 87 in this way, it serves as a mark for the position of the lock portions 45 and 59 and locks the pressing force when the lock portions 45 and 59 are engaged with the locking portion 43. It can be efficiently transmitted to the parts 45 and 59. In addition, it is possible to reduce the collapse of the side walls 37 and 39 inward, the mechanical strength of the side walls 37 and 39 is reinforced, and the thickness of the side walls 37 and 39 can be reduced. In the above-described embodiment, the U-shaped connector cover 31 is described as the resin molded product, but the deformation preventing structure of the resin molded product according to the present invention is also applied to the U-shaped protector, the cover and the lid. You can Further, the collapse prevention rib may be formed of one plate-shaped portion or three or more plate-shaped portions.
It is preferable to form the plate-shaped portion in consideration of shape and cost.
【００２９】[0029]
【発明の効果】以上説明したように請求項１の発明によ
れば、倒れ込み防止部材を側壁に一体に成形することに
より、樹脂成形品を成形した後に、倒れ込み防止部材の
収縮により側壁の内側への倒れ込みが低減される。ま
た、相手方の係止部にロック部を係合させる場合、倒れ
込み防止リブが形成されている部分を底壁側から押すこ
とにより、倒れ込み防止リブがロック部と相手方の係止
部との位置合わせの目安となり、ロック部と係止部とを
容易に係合させることが出来る。As described above, according to the first aspect of the present invention, the collapse prevention member is integrally molded with the side wall, so that after the resin molded product is molded, the collapse prevention member contracts to the inside of the side wall. The collapse of the vehicle is reduced. Also, when engaging the lock part with the mating locking part, push the part where the fall-in prevention rib is formed from the bottom wall side so that the fall-down preventing rib aligns the lock part with the mating locking part. As a guideline for, the lock portion and the locking portion can be easily engaged with each other.
【００３０】請求項２の発明によれば、側壁に対して略
直角方向に立設する２枚の板部材で倒れ込み防止リブを
形成することにより、成形した後の側壁の内側への倒れ
込みを低減することが出来る。According to the second aspect of the present invention, the collapse prevention ribs are formed by the two plate members standing upright in a direction substantially perpendicular to the side wall, so that the collapse of the side wall after molding into the inside is reduced. You can do it.
【００３１】請求項３の発明によれば、倒れ込み防止リ
ブを一方の側壁の端部のロック部から底壁を周回し、他
方の側壁の端部のロック部まで連続して形成することに
より、側壁の内側への倒れ込みをより少なくすることが
出来る。また、ロック部を相手方の係止部と係合させる
場合、底壁を周回する倒れ込み防止リブを押圧すれば、
この押圧力が倒れ込み防止リブを伝わって、ロック部に
効率良く加わり、ロック部を相手方の係止部に容易に係
合することが出来る。さらに、一方の側壁から底壁を周
回して他方の側壁まで倒れ込み防止リブが形成されてい
るので、両側の側壁及び底壁を補強することが出来る。According to the third aspect of the present invention, the collapse prevention rib is formed continuously from the lock portion at the end portion of one side wall to the bottom wall and the lock portion at the end portion of the other side wall. It is possible to further reduce the collapse of the side wall to the inside. In addition, when the locking portion is engaged with the locking portion on the other side, if the collapse prevention rib that goes around the bottom wall is pressed,
This pressing force is transmitted through the collapse prevention ribs and efficiently applied to the lock portion, so that the lock portion can be easily engaged with the mating locking portion. Further, since the collapse preventing ribs are formed from one side wall to the other side wall around the bottom wall, the side walls and the bottom wall on both sides can be reinforced.
【図１】本発明に係る樹脂成形品の変形防止構造が適用
されたコネクタカバーと、このコネクタカバーが取り付
けられるコネクタブロックを示す斜視図である。FIG. 1 is a perspective view showing a connector cover to which a deformation preventing structure for a resin molded product according to the present invention is applied, and a connector block to which the connector cover is attached.
【図２】本発明に係る樹脂成形品の変形防止構造が適用
されたコネクタカバーと、このコネクタカバーが取り付
けられるコネクタブロックを示し、（ａ）はコネクタカ
バーをコネクタブロックに取り付ける前の状態を示す側
面図、（ｂ）はコネクタカバーをコネクタブロックに取
り付けた状態を示す側面図である。FIG. 2 shows a connector cover to which a deformation preventing structure for a resin molded product according to the present invention is applied, and a connector block to which the connector cover is attached, and (a) shows a state before the connector cover is attached to the connector block. A side view, (b) is a side view showing a state in which the connector cover is attached to the connector block.
【図３】本発明に係る樹脂成形品の変形防止構造が適用
された他の実施例のコネクタカバーと、このコネクタカ
バーが取り付けられるコネクタブロックを示す斜視図で
ある。FIG. 3 is a perspective view showing a connector cover of another embodiment to which a deformation preventing structure for a resin molded product according to the present invention is applied, and a connector block to which the connector cover is attached.
【図４】従来のプロテクタを示す斜視図である。FIG. 4 is a perspective view showing a conventional protector.
【図５】従来のプロテクタを示し、（ａ）は側壁の倒れ
込みを防止した側壁と底壁との連結部分を示す断面図、
（ｂ）は側壁の倒れ込みを防止した他の側壁と底壁との
連結部分を示す断面図である。FIG. 5 shows a conventional protector, FIG. 5A is a cross-sectional view showing a connecting portion between a side wall and a bottom wall, which prevents the side wall from collapsing;
(B) is sectional drawing which shows the connection part of another side wall and the bottom wall which prevented the collapse of a side wall.
【図６】側壁間に倒れ込み防止部材を一体成形した従来
のプロテクタを示す斜視図である。FIG. 6 is a perspective view showing a conventional protector in which a collapse prevention member is integrally molded between side walls.
【図７】側壁と底壁の連結部分の外側に三角形状の倒れ
込み防止リブを設けた従来のプロテクタを示す斜視図で
ある。FIG. 7 is a perspective view showing a conventional protector in which a falling-down prevention rib having a triangular shape is provided on the outer side of a connecting portion of a side wall and a bottom wall.
３１、８５ コネクタカバー（樹脂成形品） ３５ 底壁 ３７、３９ 側壁 ４１ カバー本体 ４３ 係止部 ４５、５９ ロック部 ５３、６１ 倒れ込み防止リブ ５５、６３ 板状部 31, 85 Connector cover (resin molded product) 35 Bottom wall 37, 39 Side wall 41 Cover body 43 Locking part 45, 59 Lock part 53, 61 Fall-in prevention rib 55, 63 Plate part
Claims (3)
れぞれ一体成形された略Ｕ字状の成形品本体と、前記側
壁の端部に設けられて相手方の係止部に係合するロック
部とを備えた樹脂成形品の変形防止構造において、側壁
に、前記ロック部から前記底壁に向けて、前記側壁の内
側への倒れを阻止する倒れ込み防止リブを連続して一体
に形成したことを特徴とする樹脂成形品の変形防止構
造。1. A substantially U-shaped molded product main body in which a pair of side walls are integrally molded in the same direction from both sides of the bottom wall, and engage with a mating locking portion provided at an end of the side wall. In a structure for preventing deformation of a resin molded product including a lock portion, a collapse prevention rib for preventing a collapse of the side wall toward the inside from the lock portion is continuously formed integrally with the side wall. A structure for preventing deformation of a resin molded product, which is characterized in that
込み防止リブが、前記側壁に対して略直角方向にそれぞ
れ突設すると共に、所定の間隔をあけて略平行に設けら
れた２枚の板状部からなることを特徴とする樹脂成形品
の変形防止構造。2. The invention according to claim 1, wherein the collapse prevention ribs are provided so as to respectively project in a direction substantially perpendicular to the side wall and are provided in parallel with each other at a predetermined interval. A structure for preventing deformation of a resin molded product, characterized by comprising a plate-shaped portion.
倒れ込みリブが、一方の側壁の端部のロック部から底壁
を周回し他方の側壁の端部のロック部まで連続して成形
品本体に一体形成されていることを特徴とする樹脂成形
品の変形防止構造。3. The invention according to claim 1, wherein the falling rib continuously extends from a lock portion at an end portion of one side wall to a lock portion at an end portion of the other side wall around the bottom wall. A structure for preventing deformation of a resin molded product, which is integrally formed on the molded product body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6040847A JP3026715B2 (en) | 1994-03-11 | 1994-03-11 | Structure for preventing deformation of resin molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6040847A JP3026715B2 (en) | 1994-03-11 | 1994-03-11 | Structure for preventing deformation of resin molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07246623A true JPH07246623A (en) | 1995-09-26 |
| JP3026715B2 JP3026715B2 (en) | 2000-03-27 |
Family
ID=12591982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6040847A Expired - Fee Related JP3026715B2 (en) | 1994-03-11 | 1994-03-11 | Structure for preventing deformation of resin molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3026715B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012125037A (en) * | 2010-12-08 | 2012-06-28 | Sumitomo Wiring Syst Ltd | Protector |
-
1994
- 1994-03-11 JP JP6040847A patent/JP3026715B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012125037A (en) * | 2010-12-08 | 2012-06-28 | Sumitomo Wiring Syst Ltd | Protector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3026715B2 (en) | 2000-03-27 |
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