JP4671179B2

JP4671179B2 - Switch device

Info

Publication number: JP4671179B2
Application number: JP2007236348A
Authority: JP
Inventors: 拓飯田
Original assignee: Nippon Seiki Co Ltd
Current assignee: Nippon Seiki Co Ltd
Priority date: 2007-09-12
Filing date: 2007-09-12
Publication date: 2011-04-13
Anticipated expiration: 2027-09-12
Also published as: JP2009070645A

Description

本発明は、例えば車両に搭載され、ケース内に配置されたスイッチをケースの外部から操作するスイッチ装置に係り、特にシール部材を備えたスイッチ装置に関するものである。 The present invention relates to a switch device that is mounted on, for example, a vehicle and operates a switch disposed in a case from the outside of the case, and more particularly to a switch device that includes a seal member.

防水性を考慮した状態でスイッチをケースに取り付けたものとして、例えば下記特許文献１に記載のものがある。特許文献１に記載のスイッチは、スイッチケース２１（スイッチ）を容器１３（ケース）の内部から外部に突出させ、固定用ナット３を用いてスイッチケース２１を容器１３に取り付ける際、スイッチケース２１のフランジ部と容器１３との間にゴムワッシャ２（シール部材）を挟み込むことによって、水が容器１３の内部に浸入するのを防ぐというものである。
特開平８−２８７８０１号公報 For example, the following Patent Document 1 discloses a switch mounted on a case in consideration of waterproofness. In the switch described in Patent Document 1, when the switch case 21 (switch) protrudes from the inside of the container 13 (case) to the outside and the switch case 21 is attached to the container 13 using the fixing nut 3, By inserting the rubber washer 2 (seal member) between the flange portion and the container 13, water is prevented from entering the inside of the container 13.
JP-A-8-287801

しかしながら、特許文献１記載のスイッチは固定用ナット３の締め付けがいくらでも可能であり、それによりゴムワッシャ２がどこまでも圧縮されてしまう。高い圧縮力を受けた状態であるとゴムワッシャ２が早期に劣化しやすく、防水性が低下してしまう虞がある。 However, the switch described in Patent Document 1 can tighten the fixing nut 3 as much as possible, thereby compressing the rubber washer 2 to any extent. If it is in a state of receiving a high compressive force, the rubber washer 2 is likely to deteriorate at an early stage and the waterproofness may be lowered.

本発明は、この様な点に鑑みなされたもので、シール部材の早期劣化を抑え、防水性に優れたスイッチ装置を提供することを目的とする。 This invention is made | formed in view of such a point, and it aims at providing the switch apparatus which suppressed the early deterioration of the sealing member and was excellent in waterproofness.

本発明は前記課題を解決するため、貫通穴を設けたケースと、このケースの後面側に配置されるスイッチ本体と前記貫通穴から前記ケースの前面側に突出する操作軸とを有するスイッチと、前記スイッチ本体と前記ケースとの間に配置されたシール部材とを備え、前記シール部材は、前記操作軸が挿通される穴部と前記スイッチ本体の上面を露出する切り欠き穴とを有し、前記ケースに前記切り欠き穴に挿入され前記上面箇所に当接するリブを設けたものである。 In order to solve the above-mentioned problems, the present invention provides a switch having a case provided with a through hole, a switch body disposed on the rear side of the case, and an operation shaft protruding from the through hole to the front side of the case, A seal member disposed between the switch body and the case, the seal member having a hole portion through which the operation shaft is inserted and a notch hole exposing an upper surface of the switch body; The case is provided with a rib that is inserted into the cutout hole and abuts against the upper surface portion.

また、本発明は前記穴部の周囲に環状突起を設けたものである。 In the present invention, an annular protrusion is provided around the hole.

また、本発明は前記切り欠き穴は前記シール部材の周方向に沿って等間隔に複数設けられているものである。 In the present invention, a plurality of the cutout holes are provided at equal intervals along the circumferential direction of the seal member.

また、本発明は前記シール部材に前記スイッチ本体を囲む垂れ下がり部を設けたものである。 According to the present invention, a hanging portion surrounding the switch body is provided on the seal member.

また、本発明は前記垂れ下がり部の内径が前記スイッチ本体の外径より径小であるものである。 In the present invention, the inner diameter of the hanging portion is smaller than the outer diameter of the switch body.

シール部材の早期劣化を抑え、防水性に優れたスイッチ装置を得ることができる。 An early deterioration of the seal member can be suppressed, and a switch device excellent in waterproofness can be obtained.

以下、添付図面に基づいて、本発明を適用したスイッチ装置の実施形態を説明する。図１はスイッチ装置の断面図であり、図２はスイッチ装置に用いられるシール部材の正面図である。図３はシール部材の断面図（図２のＡ−Ａ断面）であり、図４はシール部材の断面図（図２のＢ−Ｂ断面）である。 Hereinafter, an embodiment of a switch device to which the present invention is applied will be described with reference to the accompanying drawings. FIG. 1 is a sectional view of the switch device, and FIG. 2 is a front view of a seal member used in the switch device. 3 is a cross-sectional view of the seal member (cross-section AA in FIG. 2), and FIG. 4 is a cross-sectional view of the seal member (cross-section BB in FIG. 2).

スイッチ装置は、貫通穴１を設けたケース２と、このケース２に取り付けられ操作軸３を有する例えば回転式のスイッチ４と、スイッチ４の操作軸３を回動操作する操作ツマミ５と、ケース２内への水の浸入を抑えるシール部材６と、ケース２の前面側（スイッチ操作者側）に配置され操作軸３の回動操作に対応した表示（図示せず）が施されたシート状の表示パネル７などを備えている。 The switch device includes a case 2 provided with a through hole 1, a rotary switch 4 having an operation shaft 3 attached to the case 2, an operation knob 5 for rotating the operation shaft 3 of the switch 4, and a case. A sheet member on which a seal member 6 that suppresses water intrusion 2 and a display (not shown) corresponding to the rotation operation of the operation shaft 3 is provided on the front side (switch operator side) of the case 2. The display panel 7 is provided.

スイッチ４は、スイッチ本体８と、このスイッチ本体８と一体形成され周囲にネジ部（図示せず）が形成してある取付部９と、回動可能に構成された操作軸３とからなり、スイッチ本体８がケース２の後面側に配置され、ケース２の貫通穴１から操作軸３と取付部９がケース２の前面側に突出している。そして、取付部９のネジ部に締結部材としての金属製のナット１０をネジ締めすることによってスイッチ４がケース２に取り付けられるようになっている。１１は、ケース２とナット１０との間に介在された歯付座金である。 The switch 4 includes a switch body 8, an attachment portion 9 that is integrally formed with the switch body 8 and has a screw portion (not shown) formed around it, and an operation shaft 3 that is configured to be rotatable. The switch body 8 is disposed on the rear surface side of the case 2, and the operation shaft 3 and the attachment portion 9 protrude from the through hole 1 of the case 2 to the front surface side of the case 2. The switch 4 is attached to the case 2 by screwing a metal nut 10 as a fastening member to the screw portion of the attachment portion 9. A toothed washer 11 is interposed between the case 2 and the nut 10.

取付部９は円柱の両側をそいだ形状、つまり断面が略小判形となっている。操作軸３も円柱状であるが、先端側は断面がＤの字状（Ｄの字部１２）としてある。この操作軸３の先端側に操作ツマミ５が装着されるが、操作ツマミ５を回した際に操作ツマミ５が空転しない様に操作軸３の先端側はＤの字部１２としてあるものである。 The attachment portion 9 has a shape along both sides of the cylinder, that is, a substantially oval cross section. The operation shaft 3 is also cylindrical, but the tip side has a D-shaped cross section (D-shaped portion 12). The operation knob 5 is mounted on the distal end side of the operation shaft 3. The distal end side of the operation shaft 3 is a D-shaped portion 12 so that the operation knob 5 does not idle when the operation knob 5 is turned. .

操作ツマミ５は、例えば黒色の合成樹脂からなり、操作軸３の先端側が挿入される差し込み孔１３が設けられている。この差し込み孔１３の断面は上述した様に、操作軸３の先端側の断面形状とほぼ一致している。 The operation knob 5 is made of, for example, black synthetic resin, and is provided with an insertion hole 13 into which the distal end side of the operation shaft 3 is inserted. As described above, the cross section of the insertion hole 13 substantially coincides with the cross sectional shape on the tip side of the operation shaft 3.

ケース２は、例えば黒色の合成樹脂からなり、スイッチ４の操作軸３および取付部９が挿通される貫通穴１と、スイッチ本体８の上面１４箇所に当接するリブ１５が２個設けてある。貫通穴１は、スイッチ４の取付部９の断面とほぼ一致した形状としてある。即ち、略小判形（非円形）となっており、これによってケース２に対するスイッチ４の回り止めがなされている。 The case 2 is made of, for example, black synthetic resin, and is provided with two through holes 1 through which the operation shaft 3 and the mounting portion 9 of the switch 4 are inserted, and two ribs 15 that come into contact with 14 positions on the upper surface of the switch body 8. The through hole 1 has a shape that substantially matches the cross section of the mounting portion 9 of the switch 4. That is, it has a substantially oval shape (non-circular shape), and thereby the rotation of the switch 4 with respect to the case 2 is prevented.

シール部材６は、柔軟性を有する例えば黒色の合成ゴムからなり、スイッチ本体８とケース２との間に配置される前部１６と、この前部１６に設けられスイッチ４の操作軸３および取付部９が挿通される穴部１７と、この穴部１７の周縁に設けられ断面が略半円形の環状突起１８と、前部１６の周方向に沿って等間隔（穴部の中心を原点とした等角度位置）に設けられている２個の切り欠き穴１９と、スイッチ本体８の周囲を囲みスイッチ本体８の外径より径小の垂れ下がり部２０とを有している。 The seal member 6 is made of, for example, black synthetic rubber having flexibility, and a front portion 16 disposed between the switch body 8 and the case 2, and the operation shaft 3 and the attachment of the switch 4 provided on the front portion 16. A hole 17 through which the portion 9 is inserted, an annular protrusion 18 provided at the periphery of the hole 17 and having a substantially semicircular cross section, and an equal interval along the circumferential direction of the front portion 16 (the center of the hole is the origin) And two notch holes 19 provided at equal angular positions), and a hanging portion 20 surrounding the switch body 8 and having a diameter smaller than the outer diameter of the switch body 8.

穴部１７は、スイッチ４の取付部９の断面とほぼ一致した形状としてある。即ち、略小判形となっている。切り欠き穴１９は、前部１６を切り欠くことによって設けられるもので、図２に示す様に溝状となっており、この切り欠き穴１９にケース２に設けられたリブ１５が挿入される。図示しないが、切り欠き穴１９とリブ１５の断面形状はほぼ同じくなっている。なお、切り欠き穴１９は２個に限定するものではなく、前部１６の周方向に沿って等間隔に複数個設けられていれば、３個でも４個でも良い。また、リブ１５の高さはシール部材６の環状突起１８を含めた前部１６の厚さより少し低く（短く）設定してある。 The hole portion 17 has a shape that substantially matches the cross section of the mounting portion 9 of the switch 4. That is, it has a substantially oval shape. The notch hole 19 is provided by notching the front portion 16, and has a groove shape as shown in FIG. 2, and the rib 15 provided in the case 2 is inserted into the notch hole 19. . Although not shown, the cutout holes 19 and the ribs 15 have substantially the same cross-sectional shape. Note that the number of the cutout holes 19 is not limited to two, and may be three or four as long as a plurality are provided at equal intervals along the circumferential direction of the front portion 16. The height of the rib 15 is set slightly lower (shorter) than the thickness of the front portion 16 including the annular protrusion 18 of the seal member 6.

スイッチ４のケース２への取り付けについて説明する。先ずスイッチ本体８の上面１４側にシール部材６を装着する。この際、スイッチ本体８の取付部９とシール部材６の穴部１７とが合うようにする。次に、表示パネル７が前もって貼られたケース２の貫通穴１にシール部材６が装着されたスイッチ４の操作軸３および取付部９をケース２の後面側から挿通させ、ケース２に設けたリブ１５がシール部材６の切り欠き穴１９に挿入された状態で、前述した様に歯付座金１１を介してナット１０をスイッチ本体８の取付部９にネジ締めする。 The attachment of the switch 4 to the case 2 will be described. First, the seal member 6 is mounted on the upper surface 14 side of the switch body 8. At this time, the mounting portion 9 of the switch body 8 and the hole portion 17 of the seal member 6 are matched. Next, the operation shaft 3 and the mounting portion 9 of the switch 4 in which the seal member 6 is mounted in the through hole 1 of the case 2 to which the display panel 7 is pasted in advance are inserted from the rear surface side of the case 2 and provided in the case 2. With the rib 15 inserted into the cutout hole 19 of the seal member 6, the nut 10 is screwed to the mounting portion 9 of the switch body 8 via the toothed washer 11 as described above.

ナット１０をネジ締めするにつれて、ケース２とスイッチ本体８の上面１４との間でシール部材６の環状突起１８が圧縮され、ケース２のリブ１５がスイッチ本体８の上面１４に当接することによってネジ締めが完了する。その後、操作ツマミ５の差し込み孔１３に操作軸３のＤの字部１２を挿入してスイッチ４の組み付けが完了する。 As the nut 10 is tightened, the annular protrusion 18 of the seal member 6 is compressed between the case 2 and the upper surface 14 of the switch body 8, and the rib 15 of the case 2 comes into contact with the upper surface 14 of the switch body 8 to Tightening is complete. Thereafter, the D-shaped portion 12 of the operation shaft 3 is inserted into the insertion hole 13 of the operation knob 5 to complete the assembly of the switch 4.

この様に、シール部材６にスイッチ本体８の上面１４を露出する切り欠き穴１９を設け、ケース２に切り欠き穴１９に挿入されるリブ１５を設け、このリブ１５がシール部材６の環状突起１８が圧縮された状態でスイッチ本体８の上面１４箇所に当接するように構成したことにより、環状突起１８（シール部材６）が圧縮されることで防水性が保たれると共に、ナット１０でネジ締めする際にシール部材６がどこまでも圧縮されるのを防ぐことができる。これによって締め付けすぎによるシール部材６の早期劣化を抑え、防水性に優れたスイッチ装置を得ることができる。 In this way, the seal member 6 is provided with a notch hole 19 that exposes the upper surface 14 of the switch body 8, and the case 2 is provided with a rib 15 that is inserted into the notch hole 19, and the rib 15 is an annular protrusion of the seal member 6. By being configured to contact the upper surface of the switch body 8 in a compressed state, the annular protrusion 18 (seal member 6) is compressed, so that waterproofness is maintained and the nut 10 is screwed. When tightening, the seal member 6 can be prevented from being compressed to any extent. Accordingly, it is possible to suppress the early deterioration of the seal member 6 due to excessive tightening and to obtain a switch device excellent in waterproofness.

また、シール部材６の穴部１７周囲に環状突起１８を設けることによって、ナット１０をネジ締めする際、圧縮される箇所がシール部材６の前部１６全体ではなく部分的であるため、ケース２のリブ１５がスイッチ本体８の上面１４に当接するまでの圧縮力が少なくて済み、ナット１０締めする際の作業が容易である。 Further, by providing the annular protrusion 18 around the hole portion 17 of the seal member 6, the portion to be compressed when the nut 10 is screwed is partial rather than the entire front portion 16 of the seal member 6. The compression force until the rib 15 contacts the upper surface 14 of the switch body 8 is small, and the operation when tightening the nut 10 is easy.

また、シール部材６の切り欠き穴１９はシール部材６の周方向に沿って等間隔に複数設けられていることによって、ナット１０をネジ締めした際にシール部材６の前部１６がほぼ均等に圧縮され、防水性に優れたスイッチ装置を得ることができる。 Further, the plurality of cutout holes 19 of the seal member 6 are provided at equal intervals along the circumferential direction of the seal member 6, so that the front portion 16 of the seal member 6 is substantially even when the nut 10 is screwed. A switch device that is compressed and excellent in waterproofness can be obtained.

また、シール部材６にスイッチ本体８を囲む垂れ下がり部２０を設けたことによって、ネジ締め（圧縮）時の前部１６の変形が抑えられ、防水性に優れたスイッチ装置を得ることができる。 In addition, by providing the seal member 6 with the hanging portion 20 surrounding the switch body 8, deformation of the front portion 16 at the time of screw tightening (compression) can be suppressed, and a switch device having excellent waterproofness can be obtained.

また、シール部材６の垂れ下がり部２０の内径がスイッチ本体８の外径より径小であることによって、圧入設定となるため、スイッチ４に対するシール部材６の回り止め効果が得られる。更に、ケース２にスイッチ４を組み付ける際、逆さにしてもシール部材６がスイッチ４から外れることがなく、組み付け作業性の向上に繋がる。 In addition, since the inner diameter of the hanging portion 20 of the seal member 6 is smaller than the outer diameter of the switch body 8, the press-fitting setting is performed, so that the effect of preventing the rotation of the seal member 6 with respect to the switch 4 is obtained. Further, when the switch 4 is assembled to the case 2, the sealing member 6 does not come off from the switch 4 even if the switch 4 is inverted, leading to an improvement in assembling workability.

なお、本実施形態に於いてはシール部材６の前部１６に環状突起１８を設けたが環状突起１８は設けなくとも良く、その場合、シール部材６が圧縮された状態でスイッチ本体８の上面１４箇所に当接するように、ケース２のリブ１５の高さはシール部材６の前部１６の厚さより少し低く設定しておけば良い。 In the present embodiment, the annular protrusion 18 is provided on the front portion 16 of the seal member 6, but the annular protrusion 18 may not be provided. In this case, the upper surface of the switch body 8 with the seal member 6 compressed. The height of the rib 15 of the case 2 may be set slightly lower than the thickness of the front portion 16 of the seal member 6 so as to contact the 14 locations.

本発明の実施形態を示すスイッチ装置の断面図。Sectional drawing of the switch apparatus which shows embodiment of this invention. 同スイッチ装置に用いられるシール部材の正面図。The front view of the sealing member used for the switch apparatus. 同シール部材の断面図（図２のＡ−Ａ断面）。Sectional drawing (AA cross section of FIG. 2) of the sealing member. 同シール部材の断面図（図２のＢ−Ｂ断面）。Sectional drawing of the sealing member (BB cross section of FIG. 2).

Explanation of symbols

１貫通穴
２ケース
３操作軸
４スイッチ
６シール部材
８スイッチ本体
９取付部
１４上面
１５リブ
１６前部
１７穴部
１８環状突起
１９切り欠き穴
２０垂れ下がり部 DESCRIPTION OF SYMBOLS 1 Through hole 2 Case 3 Operation shaft 4 Switch 6 Seal member 8 Switch main body 9 Mounting part 14 Upper surface 15 Rib 16 Front part 17 Hole part 18 Ring protrusion 19 Notch hole 20 Hanging part

Claims

A switch having a case provided with a through hole, a switch body disposed on the rear surface side of the case, an operation shaft projecting from the through hole to the front surface side of the case, and between the switch body and the case A seal member disposed, the seal member having a hole portion through which the operation shaft is inserted and a notch hole exposing the upper surface of the switch body, and inserted into the notch hole in the case. A switching device comprising a rib that contacts the upper surface portion.

The switch device according to claim 1, wherein an annular protrusion is provided around the hole.

The switch device according to claim 1, wherein a plurality of the cutout holes are provided at equal intervals along a circumferential direction of the seal member.

The switch device according to any one of claims 1 to 3, wherein a hanging portion surrounding the switch body is provided on the seal member.

The switch device according to claim 4, wherein an inner diameter of the hanging portion is smaller than an outer diameter of the switch body.