JP3407776B2 - Lock structure for assembled parts - Google Patents
Lock structure for assembled partsInfo
- Publication number
- JP3407776B2 JP3407776B2 JP24744095A JP24744095A JP3407776B2 JP 3407776 B2 JP3407776 B2 JP 3407776B2 JP 24744095 A JP24744095 A JP 24744095A JP 24744095 A JP24744095 A JP 24744095A JP 3407776 B2 JP3407776 B2 JP 3407776B2
- Authority
- JP
- Japan
- Prior art keywords
- engagement
- engaging
- frame
- projection
- lock
- 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 - Lifetime
Links
Landscapes
- Connection Of Plates (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、組付けられる部品
を組付状態に係止するロック構造の改良に関し、部品組
付時に要するロック挿入力を小さくし、作業性の向上を
図るようにしたものである。
【０００２】
【従来の技術】係合突起と孔との嵌合により係止される
組付部品としては、例えば図４に示すようなワイヤハー
ネスプロテクタがある（実公平４−４８３３３号）。即
ち、プロテクタ本体１は底壁２と両側の起立側壁３，４
により樋状に形成され、上部には蓋５が取付けられる。
蓋５の両側壁６，７にはその長手方向に沿って適宜間隔
をおいてロック孔９を有する係合枠８が設けられてい
る。また、プロテクタ本体１の側壁３，４には上記係合
枠８と対応して係合突起１０が設けられている。係合突
起１０は、壁面から最も高い頂面１２、その前方即ち係
合枠８側の案内斜面１１および後方の側壁３，４に直角
な戻り止め面１３とから成る。
【０００３】プロテクタ本体１に蓋５を被せると、係合
枠８の先端部８ａが係合突起１０の案内斜面１１に当接
し、その水平分力によって係合枠８が外側に撓んで拡開
し、或いは側壁３，４が内側に撓む。次いで、先端部８
ａが係合突起１０をのりこえ、該係合突起１０がロック
孔９の位置までくると、係合枠８または側壁３，４が弾
性復帰することにより係合突起１０がロック孔９に嵌入
し、蓋５がプロテクタ本体１にロックされる構造であ
る。
【０００４】上記構造において、プロテクタ本体１と蓋
５の組付の際には、係合枠８の先端部８ａと案内斜面１
１の面接触による摩擦力および係合枠８が係合突起１０
を押す力とによりロック挿入力が徐々に大きくなるか
ら、ロックが固くて組付に大きな力を要し、作業性の悪
いことが問題となっていた。
【０００５】
【発明が解決しようとする課題】本発明は上記の問題点
に着目してなされたものであり、ロックの安定性を損な
わずに組付時のロック挿入力を小さくし、作業性のよい
組付部品のロック構造を提供することを課題とする。
【０００６】
【課題を解決するための手段】前記の課題を達成するた
め、本発明は、一方の部品の側壁の外面に、頂面を境と
して一方の面を案内斜面とし、他方の面を戻り止め面と
した係合突起を設け、他方の部品に該係合突起が嵌入す
るロック孔を有する係合枠を設け、双方の部品の組付時
に該係合枠が該係合突起をのりこえて該係合突起が該ロ
ック孔に係合するロック構造において、前記係合突起の
前記案内斜面および前記戻り止め面を二又に分割し、分
割された各案内斜面を前記頂面に近づく程巾狭に形成し
て前記係合枠との接触面積が漸減するようにし、分割さ
れた一対の各戻り止め面で該係合枠の先端部を二面係止
することを特徴とする。
【０００７】請求項１の発明によれば、二つの部品の組
付けが進むと、係合枠の先端部が係合突起の頂面に近づ
いて次第に拡開し、その弾性変位量が大きくなるから、
ロック挿入力も高くなる。しかし、案内斜面を頂面に近
づく程巾狭に形成し、前記係合突起との接触面積が漸減
するようにしたから、その摩擦力は次第に小さくなる。
従って、係合突起の壁面からの高さが同じであれば、従
来品と比べてロック挿入力を小さくすることができ、作
業性も向上する。
【０００８】
【発明の実施の形態】以下、本発明の実施の形態の具体
例を図１及び図２を参照して説明する。なお、従来例と
同一の構成部材には同一符号を付し、説明を簡略する。
底壁２と両側の起立側壁３，４とから成る樋状のプロテ
クタ本体１の内部にはワイヤハーネス（図示せず）が収
容され、上部には両側壁６，７にロック孔９を有する係
合枠８を設けた蓋５が取付けられる。そして、プロテク
タ本体１の側壁３，４には上記係合枠８と対応する位置
に係合突起１０′設けられている。
【０００９】以上のように、プロテクタＡは従来例と同
様の基本構成を有するが、本発明にあっては、前記係合
突起１０を縦に二分したような係合突起１０′が設けら
れている。即ち、係合突起１０′は側壁３，４の壁面か
ら最も高い頂面１２′、その前方（係合枠８側）の案内
斜面１１′および後方の壁面に直角な戻り止め面１３′
から成り、戻り止め面１３′から案内斜面１１′にかけ
てＶ字形の切欠１４を設けることにより、案内斜面１
１′、頂面１２′および戻り止め面１３′が左右にほぼ
二分割された構造である。これにより、案内斜面１１′
の巾が頂面１２′に近づく程狭くなり、上記係合枠８と
の接触面積が漸減するように形成されている。
【００１０】上記構成において、プロテクタ本体１に対
して蓋５を被せると、係合枠８の先端部８ａが係合突起
１０′の案内斜面１１′に当接し、従来例の場合と同様
に当接力の水平分力によって係合枠８が外側に撓んで拡
開し、或いは側壁３，４が内側に撓む。そして、係合枠
８の先端部８ａが係合突起１０′をのりこえ、ロック孔
９が係合突起１０′に達すると、係合枠８または側壁
３，４が弾性復帰して係合突起１０′がロック孔９に嵌
入し、先端部８ａの内縁８ａ1 が戻り止め面１３′と係
合することにより蓋５がプロテクタ本体１にロックされ
る。
【００１１】係合突起１０′と係合枠８によるロックに
際し、係合枠８は係合突起１０′の案内斜面１１′に沿
って変形する。即ち、係合枠８はその先端部８ａが案内
斜面１１′に摺接し、次いで先端部内縁８ａ1 が頂面１
２′に摺接する。従って、係合突起１０′の頂面１２′
に係合枠８の先端部８ａが近づく程挿入力が高くなる。
しかし、この先端部８ａの接触面積は頂面１２′に近づ
く程小さく、摩擦力も小さくなるから、全体としてロッ
ク挿入力を小さくすることができ、そのピーク値が安定
化する。
【００１２】図３は、係合突起の参考例を示し、図２の
二分割された係合突起１０′の一方を残して、変更を加
えたものである。図３の係合突起１０″は、その頂面１
２″および戻り止め面１３″を図２の係合突起１０′の
頂面１２′と戻り止め面１３′と比べて巾広に形成し、
係合枠８に対応できるように補強したものである。案内
斜面１１″が頂面１２″に近づく程巾狭に形成されるの
は前記と同様であり、係合突起１０′の場合と同様の効
果が得られる。
【００１３】以上は係合枠８と係止突起１０′とからな
るロック構造をプロテクタに適用した例について説明し
たが、電気接続箱の箱本体と上カバー、電気接続箱とそ
の防水カバー、ブラケットとその差込み枠などのように
相対向して組付けられる二分品間に広く用いることがで
きる。また、係合枠８は図１において両側にスリット
（図示せず）を設けて側壁６，７と面一に形成したり、
係合枠８の基端に立上げ基部（図示せず）を設けて全体
を壁面から浮かして設けることもできる。
【００１４】
【発明の効果】以上説明したように、本発明は、一方の
部品の側壁の外面に、頂面を境として一方の面を案内斜
面とし、他方の面を戻り止め面とした係合突起を設け、
他方の部品に該係合突起が嵌入するロック孔を有する係
合枠を設け、双方の部品の組付時に該係合枠が該係合突
起をのりこえて該係合突起が該ロック孔に係合するロッ
ク構造において、前記係合突起の前記案内斜面および前
記戻り止め面を二又に分割し、分割された各案内斜面を
前記頂面に近づく程巾狭に形成して前記係合枠との接触
面積が漸減するようにし、分割された一対の各戻り止め
面で該係合枠の先端部を二面係止する構成を採用したか
ら、組付時のロック挿入力を小さくし、組付作業性をよ
くすることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a lock structure for locking a part to be assembled in an assembled state, and to a lock insertion force required for assembling the part. Thus, the workability is improved. 2. Description of the Related Art A wire harness protector as shown in FIG. 4 is known as an assembled part which is locked by fitting an engaging projection with a hole (Japanese Utility Model Publication No. 4-48333). That is, the protector body 1 has a bottom wall 2 and upright side walls 3 and 4 on both sides.
And a lid 5 is mounted on the upper part.
Engaging frames 8 having lock holes 9 are provided on both side walls 6 and 7 of the lid 5 at appropriate intervals along the longitudinal direction thereof. Engagement protrusions 10 are provided on the side walls 3 and 4 of the protector body 1 in correspondence with the engagement frames 8. The engagement projection 10 includes a top surface 12 which is the highest from the wall surface, a guide slope 11 in front of the engagement surface 8, that is, on the side of the engagement frame 8, and a detent surface 13 perpendicular to the rear side walls 3 and 4. When the cover 5 is put on the protector body 1, the front end 8a of the engagement frame 8 comes into contact with the guide slope 11 of the engagement projection 10, and the engagement frame 8 is bent outward by the horizontal component force to expand. Alternatively, the side walls 3 and 4 bend inward. Next, the tip 8
a is over the engaging projection 10, and when the engaging projection 10 reaches the position of the lock hole 9, the engaging frame 8 or the side walls 3 and 4 are elastically restored, so that the engaging projection 10 is fitted into the lock hole 9. , The lid 5 is locked to the protector body 1. In the above structure, when the protector body 1 and the lid 5 are assembled, the tip 8a of the engagement frame 8 and the guide slope 1
The frictional force due to the surface contact and the engagement frame 8
Since the lock insertion force is gradually increased by the pressing force, the lock is hard and requires a large force for assembly, and there is a problem that workability is poor. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and reduces the lock insertion force at the time of assembling without deteriorating the stability of the lock. It is an object of the present invention to provide a lock structure of an assembled component that is good. [0006] [Means for Solving the Problems] To achieve the above object, the present invention is the outer surface of the side wall of one part, and a boundary top surface
And the one side and the guide slopes, the engaging projections and the other side detent surface and provided, provided an engagement frame having a locking hole in which the engaging projection on the other component is fitted, both parts the engaging frame during assembling is in the locked structure engaging projections get over the engaging projection is engaged with the b <br/> click holes of the engaging projection
Dividing the guide slope and the detent surface into two
Each of the split guide slopes is formed narrower as approaching the top surface.
The contact area between the engaging frame so as to gradually decrease Te, division of
The front end of the engagement frame is locked on two sides by each pair of detent surfaces
Characterized in that it. According to the first aspect of the present invention, as the two components are assembled, the front end of the engagement frame approaches the top surface of the engagement projection and gradually expands, thereby increasing the amount of elastic displacement. From
The lock insertion force also increases. However, since the guide slope is formed narrower as approaching the top surface, and the contact area with the engagement projection is gradually reduced, the frictional force is gradually reduced.
Therefore, if the height of the engaging projection from the wall surface is the same, the lock insertion force can be reduced as compared with the conventional product, and the workability is improved. A specific example of an embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be simplified.
A wire harness (not shown) is housed inside a gutter-shaped protector body 1 composed of a bottom wall 2 and upstanding side walls 3 and 4 on both sides, and a lock hole 9 is provided on the upper side walls 6 and 7 on both sides. The lid 5 provided with the joint frame 8 is attached. The side walls 3 and 4 of the protector main body 1 are provided with engagement projections 10 'at positions corresponding to the engagement frames 8. As described above, the protector A has the same basic configuration as that of the conventional example. However, in the present invention, the protector A is provided with the engaging protrusion 10 'which is obtained by vertically dividing the engaging protrusion 10 into two. I have. That is, the engagement projection 10 'is the highest surface 12' from the wall surfaces of the side walls 3 and 4, the guide slope 11 'in front of the top surface (the engagement frame 8 side), and the detent surface 13' perpendicular to the rear wall surface.
By providing a V-shaped notch 14 from the detent surface 13 'to the guide slope 11', the guide slope 1
1 ', the top surface 12' and the detent surface 13 'have a structure which is substantially divided into two right and left parts. Thereby, the guide slope 11 '
Is narrowed toward the top surface 12 ', so that the contact area with the engagement frame 8 is gradually reduced. In the above configuration, when the cover 5 is put on the protector main body 1, the distal end portion 8a of the engagement frame 8 comes into contact with the guide slope 11 'of the engagement projection 10', and the same as in the conventional example. The engagement frame 8 bends outward and expands due to the horizontal component force of the contact force, or the side walls 3 and 4 bend inward. When the distal end portion 8a of the engagement frame 8 is over the engagement protrusion 10 'and the lock hole 9 reaches the engagement protrusion 10', the engagement frame 8 or the side walls 3, 4 are elastically restored and the engagement protrusion 10 'is restored. ′ Fits into the lock hole 9, and the inner edge 8 a 1 of the tip 8 a engages with the detent surface 13 ′ to lock the lid 5 to the protector body 1. At the time of locking by the engagement projection 10 'and the engagement frame 8, the engagement frame 8 is deformed along the guide slope 11' of the engagement projection 10 '. That is, engaging frame 8 is in sliding contact with the distal end portion 8a is the guide slope 11 ', then tip inner edge 8a 1 is a top plane 1
2 ′. Therefore, the top surface 12 'of the engagement projection 10'
The insertion force increases as the tip 8a of the engagement frame 8 approaches.
However, the contact area of the tip 8a becomes smaller as it approaches the top surface 12 ', and the frictional force becomes smaller. Therefore, the lock insertion force can be reduced as a whole, and its peak value is stabilized. FIG. 3 shows a reference example of the engagement projection, which is modified with one of the two engagement projections 10 'shown in FIG. 2 remaining. The engagement projection 10 ″ of FIG.
2 "and the detent surface 13" are formed wider than the top surface 12 'and the detent surface 13' of the engagement projection 10 'in FIG.
It is reinforced so as to correspond to the engagement frame 8. As described above, the guide bevel 11 "is formed narrower as it approaches the top surface 12", and the same effect as in the case of the engagement projection 10 'is obtained. In the above, an example in which the lock structure including the engagement frame 8 and the locking projection 10 'is applied to the protector has been described. However, the box body and upper cover of the electric connection box, the electric connection box and its waterproof cover, and the bracket are provided. It can be widely used between two parts that are assembled to face each other, such as a frame and its insertion frame. In addition, the engagement frame 8 is provided with slits (not shown) on both sides in FIG.
It is also possible to provide a rising base (not shown) at the base end of the engagement frame 8 so as to float the whole from the wall surface. As described above, according to the present invention, the outer surface of the side wall of one of the components has one surface as a guide slope and the other surface as a detent surface with the top surface as a boundary. Provide a projection,
The engagement frame having a lock hole to which the engaging protrusions on the other parts are fitted provided, engaging engagement projections the engaging frame when assembling both part rides over the engaging projection into the lock hole In the locking structure, the guide slope and the front of the engagement protrusion are provided.
Dividing the serial detent surface bifurcated, each of the divided guide slopes are formed on Hodohaba narrow closer to the top surface as the contact area between the engaging frame is gradually reduced, a pair of the divided Detent
Since the configuration in which the front end of the engagement frame is locked on two sides by the surface is adopted, the lock insertion force at the time of assembling can be reduced, and the assembling workability can be improved.
【図面の簡単な説明】
【図１】本発明に係るロック部を設けた部品の斜視図で
ある。
【図２】図１の係合突起の拡大斜視図である。
【図３】係合突起の参考例を示す斜視図である。
【図４】従来のロック部を設けた部品の斜視図である。
【符号の説明】
１ プロテクタ本体１
３，４ 側壁
５ 蓋
６，７ 側壁
８ 係合枠
９ ロック孔
１０′，１０″ 係合突起
１１′，１１″ 案内斜面
１２′，１２″ 頂面
１３′，１３″ 戻り止め面BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a component provided with a lock portion according to the present invention. FIG. 2 is an enlarged perspective view of an engagement protrusion of FIG. 1; FIG. 3 is a perspective view showing a reference example of an engagement protrusion. FIG. 4 is a perspective view of a conventional component provided with a lock portion. [Description of Signs] 1 Protector main body 1, 3, 4 Side wall 5 Lid 6, 7 Side wall 8 Engagement frame 9 Lock hole 10 ', 10 "Engagement protrusion 11', 11" Guide slope 12 ', 12 "Top surface 13' , 13 "detent surface
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F16B 21/07 F16B 5/07 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) F16B 21/07 F16B 5/07
Claims (1)
して一方の面を案内斜面とし、他方の面を戻り止め面と
した係合突起を設け、他方の部品に該係合突起が嵌入す
るロック孔を有する係合枠を設け、双方の部品の組付時
に該係合枠が該係合突起をのりこえて該係合突起が該ロ
ック孔に係合するロック構造において、 前記係合突起の前記案内斜面および前記戻り止め面を二
又に分割し、分割された各案内斜面を前記頂面に近づく
程巾狭に形成して前記係合枠との接触面積が漸減するよ
うにし、分割された一対の各戻り止め面で該係合枠の先
端部を二面係止することを特徴とする組付部品のロック
構造。(57) [Claims] [Claim 1] The outer surface of the side wall of one of the components is separated from the top surface by a boundary.
And the one side and the guide slopes, the engaging projections and the other side detent surface and provided, provided an engagement frame having a locking hole in which the engaging projection on the other component is fitted, both parts during assembling the lock structure to which the engaging frame is engaging projections get over the engaging projection is engaged with the b <br/> click hole, the guide inclined surface and the detent surface of the engaging projection Two
Also, each of the divided guide slopes is formed so as to be narrower as approaching the top surface so that the contact area with the engagement frame is gradually reduced . Beyond the border
A locking structure for an assembled part, wherein an end portion is locked on two sides .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24744095A JP3407776B2 (en) | 1995-09-26 | 1995-09-26 | Lock structure for assembled parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24744095A JP3407776B2 (en) | 1995-09-26 | 1995-09-26 | Lock structure for assembled parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0988927A JPH0988927A (en) | 1997-03-31 |
| JP3407776B2 true JP3407776B2 (en) | 2003-05-19 |
Family
ID=17163479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24744095A Expired - Lifetime JP3407776B2 (en) | 1995-09-26 | 1995-09-26 | Lock structure for assembled parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3407776B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4147967B2 (en) * | 2003-02-17 | 2008-09-10 | 株式会社デンソー | Assembly determination device and assembly determination method |
| JP4717041B2 (en) * | 2007-09-04 | 2011-07-06 | 矢崎総業株式会社 | Protector lock structure |
| JP6186922B2 (en) | 2013-06-18 | 2017-08-30 | 住友電装株式会社 | Wiring module |
-
1995
- 1995-09-26 JP JP24744095A patent/JP3407776B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0988927A (en) | 1997-03-31 |
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