JP2014001825A - Coupling structure of components - Google Patents

Coupling structure of components Download PDF

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JP2014001825A
JP2014001825A JP2012138654A JP2012138654A JP2014001825A JP 2014001825 A JP2014001825 A JP 2014001825A JP 2012138654 A JP2012138654 A JP 2012138654A JP 2012138654 A JP2012138654 A JP 2012138654A JP 2014001825 A JP2014001825 A JP 2014001825A
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engagement
engagement piece
main body
engaging
body case
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JP5950712B2 (en
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Takamitsu Ito
貴光 伊藤
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Tokai Rika Co Ltd
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Tokai Rika Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To make an engagement piece unlikely to be disengaged from an engagement protrusion even when a load acts, in a structure for coupling a mounting component to a mounted component according to a so-called snap-fit method.SOLUTION: An engagement protrusion 29 is provided in an outer wall part of a main body case 12. A cover case 13 comprises an elastically deformable engagement piece 30 including a hole part 30a which is disposed along the outer wall part while extending in the direction of an arrow A and in which the engagement protrusion 29 is disposed, and a hook part 32 which is hung on a lock surface 29b of the engagement protrusion 29 while facing the hole part 30a. In the engagement piece 30, a slit 30b is formed while being positioned in a side portion of the hook part 32. An abutment surface 32a which is hooked on the lock surface 29b of the hook part 32 is made into tapered surface.

Description

本発明は、外壁部に係合凸部を有する被取付部品に対し、係合片を有する取付部品を嵌め込むようにして結合させる部品の結合構造に関する。   The present invention relates to a connecting structure for parts to be connected to an attached part having an engaging convex part on an outer wall part by fitting an attaching part having an engaging piece.

自動車に設けられる部品、例えばレバースイッチ装置においては、各種の構成部品や配線基板等を内部に組込んだ合成樹脂製の本体ケースに対し、その上面開口部を塞ぐように合成樹脂製のカバーケースを結合して構成される（例えば、特許文献１参照）。このとき、従来では、前記本体ケース１に対するカバーケース２の結合構造として、いわゆるスナップフィット方式と称される、図５及び図６に示す構成が採用されていた。   For parts provided in automobiles, such as lever switch devices, a synthetic resin cover case that closes the top opening of a synthetic resin main body case that incorporates various components, wiring boards, etc. (See, for example, Patent Document 1). At this time, conventionally, the structure shown in FIG. 5 and FIG. 6, which is referred to as a so-called snap-fit method, has been adopted as the connecting structure of the cover case 2 to the main body case 1.

即ち、本体ケース１の外壁部には、係合凸部３が一体に設けられている。これに対し、カバーケース２には、前記係合凸部３に係合されるコ字型をなす係合片４が一体に設けられている。係合片４は、カバーケース２の外面から下方（本体ケース１側）に突出して延び、本体ケース１の外壁部に沿うように配置される。これにて、カバーケース２を、本体ケース１に対して嵌め込むようにすることにより、係合片４が弾性変形により係合凸部３を乗越えて係合され、もって本体ケース１にカバーケース２が結合される。このような結合構造を採用することにより、例えばねじ止め等を行う場合と比較して、組立作業が簡単で、部品数も少なく済ませることができる。   In other words, the engagement convex portion 3 is integrally provided on the outer wall portion of the main body case 1. On the other hand, the cover case 2 is integrally provided with a U-shaped engagement piece 4 that is engaged with the engagement protrusion 3. The engagement piece 4 extends downward from the outer surface of the cover case 2 (main body case 1 side) and is disposed along the outer wall portion of the main body case 1. Thus, the cover case 2 is fitted into the main body case 1 so that the engaging piece 4 is engaged with the main body case 1 over the engaging projection 3 by elastic deformation. 2 are combined. By adopting such a coupling structure, for example, assembling work is simple and the number of parts can be reduced as compared with the case where screwing or the like is performed.

特開２０１０−１７３５３１号公報JP 2010-173531 A

上記した従来の構成では、図６（ａ）に示すように、係合片４と係合凸部３との係合部分に、例えば矢印Ａで示す方向の荷重がかかった場合などに、図６（ｂ）に示すように、係合片４が開く方向（本体ケース１の外壁部から離れる方向）に変形し、係合凸部３に対する係合片４の係合状態が外れてしまう虞があった。   In the conventional configuration described above, as shown in FIG. 6A, when a load in the direction indicated by the arrow A is applied to the engaging portion between the engaging piece 4 and the engaging convex portion 3, for example, 6 (b), the engagement piece 4 may be deformed in the opening direction (the direction away from the outer wall portion of the main body case 1), and the engagement state of the engagement piece 4 with respect to the engagement protrusion 3 may be released. was there.

本発明は上記事情に鑑みてなされたもので、その目的は、被取付部品に対し取付部品をいわゆるスナップフィット方式により結合するものにおいて、荷重が作用した場合でも係合凸部から係合片が外れにくくすることができる部品の結合構造を提供するにある。   The present invention has been made in view of the above circumstances, and an object of the present invention is to connect a mounting part to a mounted part by a so-called snap-fit method. It is in providing the coupling | bonding structure of the components which can be made hard to come off.

本発明の部品の結合構造は、被取付部品に対し取付部品を嵌め込むようにして結合させる部品の結合構造において、前記被取付部品の外壁部には、係合凸部が設けられ、前記取付部品には、嵌め込み方向に延びて前記外壁部に沿うように配置され、前記係合凸部が配置される穴部と、その穴部に臨んで該係合凸部の前記嵌め込み方向を向く係止面に引掛けられる掛り部とを有する弾性変形可能な係合片が設けられていると共に、前記係合片には、前記掛り部の側部に位置して前記穴部から嵌め込み方向に延びるスリットが形成されているところに特徴を有する。   The component coupling structure of the present invention is a component coupling structure in which a mounting component is fitted to a mounted component, and an engagement convex portion is provided on an outer wall portion of the mounted component. Is arranged so as to extend in the fitting direction and along the outer wall portion, the hole portion in which the engaging convex portion is arranged, and the locking surface facing the hole portion and facing the fitting direction of the engaging convex portion An elastically deformable engagement piece having a hook part hooked on the hook part is provided, and the engagement piece has a slit that is located on a side part of the hook part and extends from the hole part in the fitting direction. It is characterized by being formed.

本発明の部品の結合構造によれば、被取付部品に対し取付部品を嵌め込むようにすることにより、係合片が弾性変形により係合凸部を乗越えて、係合凸部が穴部内に配置され且つ掛り部が係合凸部の係止面に引掛けられた状態に係合され、被取付部品に取付部品が結合される。このとき、係合片にスリットが設けられていることにより、係合片のうちスリットの内側である掛り部部分がたわみ変形しやすくなり、係合凸部を容易に乗越えさせることができる。そして、係合部分に荷重が作用して、係合片がその先端側が開く方向に力を受けても、掛り部部分のたわみ変形によって、掛り部の係合凸部の係止面に引掛かっている部分が外れる方向にずれることを抑えることができる。   According to the component coupling structure of the present invention, by fitting the mounting part into the mounted part, the engagement piece gets over the engagement convex part by elastic deformation, and the engagement convex part is in the hole. The hooked part is engaged with the hooking part hooked on the engaging surface of the engaging convex part, and the mounting part is coupled to the part to be mounted. At this time, since the engagement piece is provided with the slit, the hook portion inside the slit of the engagement piece is easily deformed and can easily get over the engagement convex portion. And even if a load acts on the engaging portion and the engaging piece receives a force in a direction in which the distal end side opens, the engaging piece is hooked on the engaging surface of the engaging convex portion of the hanging portion by the deformation of the hanging portion. It is possible to suppress the displacement of the existing part in the direction of detachment.

従って、係合部分に作用する荷重によって係合片が弾性変形しても、係止面に対する掛り部の係止が外れることを効果的に抑制することができる。この結果、本発明の部品の結合構造によれば、いわゆるスナップフィット方式の採用による、組立作業が簡単で、部品数も少なく済ませることができるといったメリットを得ながらも、荷重が作用した場合でも係合凸部から係合片が外れにくくすることができるという優れた効果を奏する。   Therefore, even if the engagement piece is elastically deformed by a load acting on the engagement portion, it is possible to effectively suppress the engagement of the hook portion with respect to the engagement surface. As a result, according to the connecting structure of parts of the present invention, the so-called snap-fit method can be used to obtain the merit that the assembling work is simple and the number of parts can be reduced. There is an excellent effect that it is possible to make it difficult to disengage the engagement piece from the joint convex portion.

本発明の一実施例を示すもので、レバースイッチ装置のケースの結合構造を示す要部の拡大正面図（ａ）及びそのＢ−Ｂ線に沿う縦断側面図（ｂ）1 shows an embodiment of the present invention, and is an enlarged front view (a) of a main part showing a coupling structure of a case of a lever switch device, and a vertical side view (b) along the line BB. レバースイッチ装置のケースの正面図Front view of the case of the lever switch device レバースイッチ装置の分解斜視図Exploded perspective view of lever switch device 本発明の他の実施例を示す図２相当図FIG. 2 equivalent view showing another embodiment of the present invention. 従来例を示すもので、要部の斜視図The perspective view of the principal part which shows a conventional example 係合片が併合凸部に対し結合している状態（ａ）及び荷重が作用して係合片が開いた状態（ｂ）を示す縦断面図The longitudinal cross-sectional view which shows the state (a) in which the engagement piece is couple | bonded with the merged convex part, and the state (b) in which the engagement piece was opened by the load acting

以下、本発明を自動車のレバースイッチ装置に適用した一実施例について、図１ないし図３を参照しながら説明する。図２及び図３は、レバースイッチ装置１１を示しており、このレバースイッチ装置１１は、図示しない自動車のステアリングコラム部分に設けられる。被取付部品としての本体ケース１２と、その上部に被せられる取付部品としてのカバーケース１３とを備えている。尚、以下の説明では、便宜上、レバースイッチ装置１１のうち、本発明に係る結合構造を有している側を正面とする、つまり図２を正面図として説明する。   Hereinafter, an embodiment in which the present invention is applied to a lever switch device of an automobile will be described with reference to FIGS. 2 and 3 show a lever switch device 11, and this lever switch device 11 is provided in a steering column portion of an automobile (not shown). A main body case 12 as a mounted part and a cover case 13 as a mounting part covered on the upper part thereof are provided. In the following description, for the sake of convenience, the side of the lever switch device 11 having the coupling structure according to the present invention will be described as the front, that is, FIG. 2 will be described as a front view.

前記本体ケース１２は、合成樹脂からほぼ矩形箱状に構成されており、図３に示すように、図で背面側にレバー１４が通される開口部１５を有すると共に、左側面にコネクタ部１６を一体的に有している。また、前記カバーケース１３は、合成樹脂から薄型のほぼ矩形蓋状に構成されており、図で背面側に操作レバー１４が通される開口（図示せず）が設けられている。   The main body case 12 is formed in a substantially rectangular box shape from a synthetic resin. As shown in FIG. 3, the main body case 12 has an opening 15 through which a lever 14 is passed on the back side and a connector portion 16 on the left side. Are integrated. Further, the cover case 13 is formed of a synthetic resin into a thin and substantially rectangular lid shape, and an opening (not shown) through which the operation lever 14 is passed is provided on the back side in the drawing.

このとき、レバースイッチ装置１１の正面部においては、いわゆるスナップフィット方式を基本とした結合構造によって、本体ケース１２に対し、カバーケース１３が上方から嵌め込まれるようにして結合される。従って、ここでは、図で上から下に向う方向（図で矢印Ａ方向）が嵌め込み方向となる。本実施例に係る部品の結合構造については、後に詳述する。   At this time, the front portion of the lever switch device 11 is coupled to the main body case 12 so that the cover case 13 is fitted from above by a coupling structure based on a so-called snap-fit method. Therefore, here, the direction from the top to the bottom in the figure (the direction of arrow A in the figure) is the fitting direction. The component coupling structure according to this embodiment will be described in detail later.

詳細な説明は省略するが、図３に示すように、前記本体ケース１２内には、インシュレータ１７が設けられている。このインシュレータ１７の上面には、ワイパ用の複数の固定接点１８やウォッシャ用の固定接点１９などが設けられている。また、インシュレータ１７に設けられた凹部１７ａ内に、ほぼＶ字状をなすウォッシャ用の可動接点２０が配設されており、前記固定接点１９と共にウォッシャスイッチが構成されている。そして、前記本体ケース１２内の下部には、インシュレータ１７の下面側に位置してプリント配線基板２１が収容されると共に、その下面開口部が下カバー２２により塞がれるようになっている。   Although detailed description is omitted, as shown in FIG. 3, an insulator 17 is provided in the main body case 12. A plurality of wiper fixed contacts 18 and a washer fixed contact 19 are provided on the top surface of the insulator 17. A movable contact 20 for a washer having a substantially V shape is disposed in a recess 17 a provided in the insulator 17, and a washer switch is configured together with the fixed contact 19. A printed wiring board 21 is housed in the lower part of the main body case 12 so as to be located on the lower surface side of the insulator 17, and the lower surface opening is closed by the lower cover 22.

さらに、前記操作レバー１４の基端部１４ａは、前記開口部１５を通して本体ケース１２内（インシュレータ１７とカバーケース１３との間）に操作可能に支持されている。このとき、基端部１４ａの前端には、後方に延びる収容穴２３が設けられ、この収容穴２３内に、コイルばね２４及び節度ピース２５が収容されている。また、基端部１４ａの前端には、ワイパ用のコンタクトホルダ２６が取付けられている。コンタクトホルダ２６の下面側には、圧縮コイルばね２７、２７により夫々下方に付勢された板ばね製のワイパ用の可動接点２８、２８が設けられている。   Further, the base end portion 14 a of the operation lever 14 is supported in the main body case 12 (between the insulator 17 and the cover case 13) through the opening 15 so as to be operable. At this time, a housing hole 23 extending rearward is provided at the front end of the base end portion 14 a, and the coil spring 24 and the moderation piece 25 are housed in the housing hole 23. Further, a wiper contact holder 26 is attached to the front end of the base end portion 14a. On the lower surface side of the contact holder 26, movable contacts 28, 28 for wipers made of leaf springs urged downward by compression coil springs 27, 27 are provided.

これにて、ワイパ用の２個の可動接点２８と、前記複数の固定接点１８とから、ワイパスイッチが構成され、前記操作レバー１４の図で水平（左右）方向の回動操作によりワイパスイッチが動作されるようになっている。また、前記操作レバー１４の基端部１４ａは、前記ウォッシャ用の可動接点２０の凸部２０ａに当接するようになっており、操作レバー１４の図で上下方向の回動操作により、ウォッシャスイッチが動作するようになっている。   Thus, a wiper switch is constituted by the two movable contacts 28 for wiper and the plurality of fixed contacts 18, and the wiper switch is operated by rotating the operation lever 14 in the horizontal (left / right) direction. It is supposed to be operated. Further, the base end portion 14a of the operation lever 14 is in contact with the convex portion 20a of the movable contact 20 for the washer, and the washer switch is turned by rotating the operation lever 14 in the vertical direction in the figure. It is supposed to work.

さて、レバースイッチ装置１１の正面部に設けられる、本実施例に係る結合構造について、図１も参照して詳述する。図２に示すように、この結合構造は、被取付部品である本体ケース１２側に係合凸部２９を設けると共に、取付部品であるカバーケース１３側に弾性変形可能な係合片３０を設け、それらをいわゆるスナップフィット方式により結合するものである。ここでは、レバースイッチ装置１１（本体ケース１２）の正面部の図で左右２箇所に位置して、同等の（左右対称的な）構造で設けられている。図１は、そのうち１箇所の結合構造を拡大して示すものである。   Now, the coupling structure according to the present embodiment, which is provided in the front portion of the lever switch device 11, will be described in detail with reference to FIG. As shown in FIG. 2, this coupling structure is provided with an engaging convex portion 29 on the body case 12 side which is a mounted part, and an engaging piece 30 which can be elastically deformed on the cover case 13 side which is a mounting part. These are combined by a so-called snap-fit method. Here, the lever switch device 11 (main body case 12) is provided with an equivalent (left-right symmetric) structure at two positions on the left and right sides in the figure of the front portion. FIG. 1 shows an enlarged view of a connecting structure at one location.

即ち、図１〜図３に示すように、本体ケース１２には、正面部の外壁部の上端部に位置して、係合凸部２９が一体に設けられている。この係合凸部２９は、正面側から見て四角形状をなすと共に、図１（ｂ）に示すように、その上半部に、上端から前方に向けて下降傾斜する傾斜面２９ａを有した形状に形成されている。また、係合凸部２９の下面が、下方（嵌め込み方向）を向く係止面２９ｂとされる。   That is, as shown in FIGS. 1 to 3, the main body case 12 is integrally provided with an engaging convex portion 29 located at the upper end portion of the outer wall portion of the front portion. The engagement convex portion 29 has a quadrangular shape when viewed from the front side, and has an inclined surface 29a inclined downward from the upper end toward the front as shown in FIG. 1B. It is formed into a shape. In addition, the lower surface of the engaging convex portion 29 is a locking surface 29b that faces downward (in the fitting direction).

これに対し、カバーケース１３に設けられる係合片３０は、前記本体ケース１２の外壁面に沿うような弾性変形可能な薄板状をなし、カバーケース１３の正面部の下端部外面から、嵌め込み方向である下方（矢印Ａ方向）に延びて一体に設けられている。また、この係合片３０は、正面から見て、全体として、真ん中の棒が短いＥの字を、開放側が上に来るように９０度倒した形状をなしている。   On the other hand, the engagement piece 30 provided in the cover case 13 has a thin plate shape that can be elastically deformed along the outer wall surface of the main body case 12, and is fitted from the outer surface of the lower end portion of the front portion of the cover case 13. And extending downward (in the direction of arrow A). In addition, the engagement piece 30 as a whole has a shape in which the middle bar is tilted 90 degrees so that the open side comes up, with the middle bar as a whole.

これにて、図１（ａ）に示すように、係合片３０は、前記係合凸部２９の左右両側を嵌め込み方向である下方（矢印Ａ方向）に延び下端で横方向につながるＵ字状（上向きのコ字状）をなす枠状部３１と、その枠状部３１の下辺部中央部から一体に上方に延び前記係合凸部２９の係止面２９ｂに引掛けられる掛り部３２とを有している。そして、前記枠状部３１内のうち、掛り部３２の上部側の開口部分が、前記係合凸部２９が配置される穴部３０ａとされると共に、前記掛り部３２の両側部に位置して、前記穴部３０ａから嵌め込み方向である下方（矢印Ａ方向）に延びるスリット３０ｂ，３０ｂが形成されている。   Thus, as shown in FIG. 1 (a), the engagement piece 30 extends downward in the fitting direction (in the direction of arrow A) on both the left and right sides of the engagement convex portion 29 and is connected in the lateral direction at the lower end. A frame-shaped part 31 having a shape (upward U-shaped) and a hook part 32 that extends upward integrally from the central part of the lower side of the frame-shaped part 31 and is hooked on the locking surface 29b of the engaging convex part 29. And have. In the frame-shaped portion 31, the opening portion on the upper side of the hanging portion 32 is a hole portion 30 a in which the engaging convex portion 29 is disposed, and is located on both sides of the hanging portion 32. Thus, slits 30b and 30b extending downward (in the direction of arrow A), which is the fitting direction, are formed from the hole 30a.

更に、本実施例では、図１（ｂ）に示すように、前記掛り部３２の先端の前記係止面２９ｂに引掛けられる当接面（図で上を向く面）３２ａは、本体ケース１２の外壁部に近い側で前記係止面２９ｂに接触するテーパ面（傾斜面）状に形成されている。尚、図１（ｂ）に示すように、係合片３０の枠状部３１の先端部（横棒部分）の内面側（本体ケース１２の外壁部を向く側）にも、係合片３０が前記係止凸部２９をスムーズに乗り越えるようにするための傾斜面３１ａが形成されている。   Further, in this embodiment, as shown in FIG. 1B, the contact surface (surface facing upward in the drawing) 32a hooked on the locking surface 29b at the tip of the hook portion 32 is formed on the main body case 12. It is formed in the taper surface (inclined surface) shape which contacts the said locking surface 29b in the side near the outer wall part. As shown in FIG. 1B, the engagement piece 30 is also provided on the inner surface side (the side facing the outer wall portion of the main body case 12) of the distal end portion (horizontal bar portion) of the frame-like portion 31 of the engagement piece 30. Is formed with an inclined surface 31a for smoothly overcoming the locking projection 29.

次に、上記構成の作用・効果について述べる。上記構成において、本体ケース１２に対してカバーケース１３を取付けるにあたっては、カバーケース１３を上方から嵌め込むようにする。これにより、カバーケース１３の係合片３０が、その下端側（枠状部３１の先端側）を開く方向に弾性変形しながら、本体ケース１２の外壁部の係合凸部２９を乗越え、係合凸部２９が穴部３０ａ内に配置され且つ掛り部３２が係合凸部２９の係止面２９ｂに引掛けられた状態に係合される。以て、掛り部３２が係合凸部２９によって上方への抜止め状態に係止され、本体ケース１２にカバーケース１３が結合固定される。   Next, the operation and effect of the above configuration will be described. In the above configuration, when the cover case 13 is attached to the main body case 12, the cover case 13 is fitted from above. As a result, the engagement piece 30 of the cover case 13 gets over the engagement convex portion 29 of the outer wall portion of the main body case 12 while elastically deforming in the direction of opening the lower end side (the front end side of the frame-like portion 31). The mating convex portion 29 is disposed in the hole portion 30 a and the hook portion 32 is engaged in a state of being hooked on the locking surface 29 b of the engaging convex portion 29. Thus, the hook portion 32 is locked by the engaging convex portion 29 so as to be prevented from being pulled upward, and the cover case 13 is coupled and fixed to the main body case 12.

このとき、係合片３０にスリット３０ｂ，３０ｂが設けられていることにより、係合片３０自体（掛り部３２部分）が、たわみ変形しやすくなる。しかも、係合凸部２９に傾斜面２９ａが形成されていると共に、係合片３０に傾斜面３１ａが形成されているので、傾斜面２９ａと傾斜面３１ａとが摺動するようにして、係合片３０が係合方向（下方）に案内されて、スムーズに係合凸部２９を乗越えさせることができる。   At this time, since the engagement piece 30 is provided with the slits 30b and 30b, the engagement piece 30 itself (the hook 32 portion) is easily deformed. In addition, since the inclined surface 29a is formed on the engaging convex portion 29 and the inclined surface 31a is formed on the engaging piece 30, the inclined surface 29a and the inclined surface 31a are slid so that the engaging surface 30 is engaged. The joining piece 30 can be guided in the engaging direction (downward) and can smoothly get over the engaging convex portion 29.

そして、この取付状態にあって、係合片３０と係合凸部２９との係合部分に、例えば矢印Ａで示す方向の荷重がかかった場合、図１（ｂ）に一部想像線で示すように、係合片３０がその下端側が開く（本体ケース１２の外壁部から離れる）方向に力を受けても、掛り部３２部分のたわみ変形によって、掛り部３２の当接面３２ａが、係合凸部２９の係止面２９ｂに引掛かっている部分が外れる方向にずれることを抑えることができる。   And in this attachment state, when the load of the direction shown, for example by the arrow A is applied to the engagement part of the engagement piece 30 and the engagement convex part 29, a partial imaginary line is shown in FIG.1 (b). As shown, even if the engagement piece 30 receives a force in the direction in which the lower end side opens (away from the outer wall portion of the main body case 12), the contact surface 32a of the hook portion 32 is caused by the bending deformation of the hook portion 32 portion. It can suppress that the part hooked on the latching surface 29b of the engagement convex part 29 slip | deviates to the direction which remove | deviates.

従って、係合部分に作用する荷重によって係合片３０が弾性変形しても、係止面２９ｂに対する掛り部３２の係止が外れることを効果的に抑制することができる。しかも、掛り部３２の当接面３２ａが本体ケース１２の外壁部に近い側で係止面２９ｂに接触するテーパ面状に構成されているので、掛り部３２部分のたわみ変形により、当接面３２ａが係止面２９ｂに食い付くようになり、掛り部３２の外れ防止効果により一層優れたものとなるのである。   Therefore, even when the engagement piece 30 is elastically deformed by a load acting on the engagement portion, it is possible to effectively suppress the engagement of the hook portion 32 with the engagement surface 29b. In addition, since the contact surface 32a of the hanging portion 32 is configured to be a tapered surface that contacts the locking surface 29b on the side close to the outer wall portion of the main body case 12, the contact surface is caused by the deformation of the hanging portion 32 portion. 32a comes to bite into the engaging surface 29b, and the effect of preventing the hanging portion 32 from coming off is further improved.

このように本実施例の部品の結合構造によれば、本体ケース１２の係合凸部２９に対してカバーケース１３の係合片３０を係合させるいわゆるスナップフィット方式の採用により、組立作業が簡単で、部品数も少なく済ませることができるといったメリットを得ながらも、係合部分に荷重が作用した場合でも係合片３０を係合凸部２９から外れにくくすることができるという優れた効果を得ることができる。また、特に本実施例では、掛り部３２の当接面３２ａをテーパ面状に構成したので、外れ防止の効果により優れたものとすることができる。   As described above, according to the component joining structure of the present embodiment, the assembly work can be performed by adopting a so-called snap-fit method in which the engagement piece 30 of the cover case 13 is engaged with the engagement convex portion 29 of the main body case 12. While obtaining the merit that it is simple and the number of parts can be reduced, even when a load is applied to the engaging portion, it is possible to make it difficult to disengage the engaging piece 30 from the engaging convex portion 29. Can be obtained. In particular, in the present embodiment, the contact surface 32a of the hanging portion 32 is formed in a tapered shape, so that the effect of preventing detachment can be improved.

図４は、本発明の他の実施例を示しており、上記一実施例と異なる点は、カバーケース４１に設けられる係合片４２の構成にある。レバースイッチ装置１１のそれ以外の構成、つまり本体ケース１２の係合凸部２９の構成等については、上記一実施例と共通している。即ち、カバーケース４１に設けられる係合片４２は、前記本体ケース１２の外壁面に沿うような弾性変形可能な薄板状をなし、カバーケース４１の正面部の下端部外面から、嵌め込み方向である下方（矢印Ａ方向）に延びて一体に設けられている。左右２箇所に設けられる係合片４２は、左右対称的な構成を備えている。   FIG. 4 shows another embodiment of the present invention. The difference from the above-described embodiment is the configuration of the engagement piece 42 provided in the cover case 41. The other configuration of the lever switch device 11, that is, the configuration of the engagement convex portion 29 of the main body case 12 is the same as that of the above-described embodiment. That is, the engagement piece 42 provided in the cover case 41 is formed in a thin plate shape that can be elastically deformed along the outer wall surface of the main body case 12, and is fitted from the outer surface of the lower end portion of the front portion of the cover case 41. It extends downward (in the direction of arrow A) and is provided integrally. The engaging pieces 42 provided at the two left and right positions have a symmetrical configuration.

左側の係合片４２は、係合凸部２９の左側を嵌め込み方向である下方（矢印Ａ方向）に延び下端で右方に折曲がるＬ字状をなす枠状部４３と、その枠状部４３の下端部から一体に上方に延び前記係合凸部２９の係止面２９ｂに引掛けられる掛り部４４とを有している。掛り部４４の上側の開口部分が、前記係合凸部２９が配置される穴部４２ａとされると共に、前記掛り部４４の左側部に位置して、前記穴部４２ａから嵌め込み方向である下方（矢印Ａ方向）に延びるスリット４２ｂが形成されている。   The left engagement piece 42 has an L-shaped frame-shaped portion 43 that extends downward in the fitting direction 29 (arrow A direction) and bends to the right at the lower end, and the frame-shaped portion. And a hook portion 44 that extends integrally upward from the lower end portion of 43 and is hooked on the locking surface 29b of the engaging convex portion 29. The opening portion on the upper side of the hanging portion 44 is a hole portion 42a in which the engaging convex portion 29 is disposed, and is located on the left side portion of the hanging portion 44 and is in the downward direction that is the fitting direction from the hole portion 42a. A slit 42b extending in the direction of arrow A is formed.

詳しく図示はしないが、前記掛り部４４の先端の係止面２９ｂに引掛けられる当接面（図で上を向く面）４４ａは、本体ケース１２の外壁部に近い側で該係止面２９ｂに接触するテーパ面（傾斜面）状に形成されている。係合片４２の先端部の内面側（本体ケース１２の外壁部を向く側）にも、係合片４２が前記係止凸部２９をスムーズに乗り越えるようにするための傾斜面が形成されている。尚、この左側の係合片４２に対し、右側の係合片４２は左右対称的な形状をなしており、対応する部分に同一の符号を付している。   Although not shown in detail, an abutment surface (a surface facing upward in the drawing) 44a hooked on the engagement surface 29b at the tip of the hook portion 44 is on the side close to the outer wall portion of the main body case 12, and the engagement surface 29b. It is formed in the taper surface (inclined surface) shape which contacts. An inclined surface is also formed on the inner surface side (the side facing the outer wall portion of the main body case 12) of the front end portion of the engagement piece 42 so that the engagement piece 42 can smoothly get over the locking projection 29. Yes. The right engaging piece 42 has a symmetrical shape with respect to the left engaging piece 42, and the corresponding portions are denoted by the same reference numerals.

このような構成においても、上記一実施例と同様に、係合片４２には、掛り部４４の側部に位置して穴部４２ａから嵌め込み方向に延びるスリット４２ｂを形成し、更に、掛り部４４の当接面４４ａをテーパ面状に構成したので、本体ケース１２に対しカバーケース４１をいわゆるスナップフィット方式により結合するものにおいて、係合部分に荷重が作用した場合でも係合片４２を係合凸部２９から外れにくくすることができるという優れた効果を奏するものである。   Even in such a configuration, similarly to the above-described embodiment, the engaging piece 42 is formed with a slit 42b that is located on the side of the hanging portion 44 and extends in the fitting direction from the hole portion 42a. Since the contact surface 44a of 44 is tapered, the cover piece 41 is coupled to the main body case 12 by a so-called snap fit method, and the engagement piece 42 is engaged even when a load is applied to the engagement portion. The excellent effect that it can be made difficult to come off from the joint protrusion 29 is achieved.

尚、上記した各実施例では、掛り部３２，４４の当接面３２ａ，４４ａをテーパ面状に構成したが、当接面を、係止凸部２９の係止面２９ｂに面接触するような水平面（外壁部に対し直角な面）に構成しても良く、少なくとも係合片にスリットを形成することにより、係合片を係合凸部から外れにくくするという所期の目的を達成することができる。その他、本発明の部品の結合構造は、自動車用のスイッチ装置のケースは勿論、ケースを有する機器全般、更には各種の用途の部品に適用することが可能である等、要旨を逸脱しない範囲内で適宜変更して実施し得るものである。   In each of the above-described embodiments, the contact surfaces 32a and 44a of the hook portions 32 and 44 are formed in a tapered shape, but the contact surface is in surface contact with the locking surface 29b of the locking projection 29. A desired horizontal surface (a surface perpendicular to the outer wall portion) may be formed, and at least the engagement piece is formed with a slit to achieve the intended purpose of making the engagement piece difficult to come off from the engagement convex portion. be able to. In addition, the component coupling structure of the present invention can be applied not only to the case of a switch device for automobiles, but also to all devices having a case, and also to components for various uses. It can be implemented with appropriate modifications.

図面中、１１はレバースイッチ装置、１２は本体ケース（被取付部品）、１３，４１はカバーケース（取付部品）、２９は係合凸部、２９ｂは係止面、３０，４２は係合片、３０ａ，４２ａは穴部、３０ｂ、４２ｂはスリット、３２，４４は掛り部、３２ａ，４４ａは当接面を示す。   In the drawings, 11 is a lever switch device, 12 is a main body case (attached part), 13 and 41 are cover cases (attachment parts), 29 is an engaging projection, 29b is a locking surface, and 30 and 42 are engaging pieces. , 30a and 42a are holes, 30b and 42b are slits, 32 and 44 are hooks, and 32a and 44a are contact surfaces.

Claims (3)

被取付部品に対し取付部品を嵌め込むようにして結合させる部品の結合構造において、
前記被取付部品の外壁部には、係合凸部が設けられ、
前記取付部品には、嵌め込み方向に延びて前記外壁部に沿うように配置され、前記係合凸部が配置される穴部と、その穴部に臨んで該係合凸部の前記嵌め込み方向を向く係止面に引掛けられる掛り部とを有する弾性変形可能な係合片が設けられていると共に、
前記係合片には、前記掛り部の側部に位置して前記穴部から嵌め込み方向に延びるスリットが形成されていることを特徴とする部品の結合構造。 In the connecting structure of parts to be connected by fitting the mounting parts to the mounted parts,
On the outer wall portion of the mounted part, an engagement convex portion is provided,
The mounting component extends in the fitting direction and is arranged along the outer wall portion, and a hole portion in which the engaging convex portion is arranged, and the fitting direction of the engaging convex portion facing the hole portion. An elastically deformable engagement piece having a hook portion hooked to the facing locking surface, and
A structure for joining parts, wherein the engagement piece is formed with a slit located in a side portion of the hook portion and extending in the fitting direction from the hole portion. 前記掛り部の前記係止面に引掛けられる当接面は、前記外壁部に近い側で前記係止面に接触するテーパ面状に形成されていることを特徴とする請求項１記載の部品の結合構造。   2. The component according to claim 1, wherein a contact surface that is hooked to the locking surface of the hook portion is formed in a tapered surface shape that contacts the locking surface on a side close to the outer wall portion. Bonding structure. 前記スリットは、前記掛り部の両側に位置して設けられていることを特徴とする請求項１又は２記載の部品の結合構造。   The component coupling structure according to claim 1, wherein the slit is provided on both sides of the hanging portion.
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