JPH02227926A - Collision detecting switch device - Google Patents
Collision detecting switch deviceInfo
- Publication number
- JPH02227926A JPH02227926A JP4804789A JP4804789A JPH02227926A JP H02227926 A JPH02227926 A JP H02227926A JP 4804789 A JP4804789 A JP 4804789A JP 4804789 A JP4804789 A JP 4804789A JP H02227926 A JPH02227926 A JP H02227926A
- Authority
- JP
- Japan
- Prior art keywords
- case
- moving member
- magnet
- attracting
- hammering
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 238000013016 damping Methods 0.000 abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- 230000001133 acceleration Effects 0.000 description 5
- 230000007257 malfunction Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、自動車の衝突時に衝突を検出し、エアバック
を作動させるための衝突検出スイッチ装置の４良に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a collision detection switch device for detecting a collision and activating an air bag when a vehicle collides.
従来のこの種の衝突検出スイッチ装置として、実開昭５
１−９９５７５号公報に示すものが知られている。As a conventional collision detection switch device of this type,
The one shown in Japanese Patent No. 1-99575 is known.
上記構成の押釦スイッチを第３図を基にして説明する。The push button switch having the above configuration will be explained based on FIG. 3.
図において、１はケースで、このケース１の内部には先
端に導電性の重り２を有する板ばね３と、重り２と対向
するように配置された台形状の板ばね４とがそれぞれ設
けられており、板ばね３．４はネジ５等の固定部材によ
りケース１１に固定されている。また、板ばね３の先端
部３ａは初期状態において、ケース１の内壁に圧接する
ように保持されている。In the figure, 1 is a case, and inside this case 1 there are provided a leaf spring 3 having a conductive weight 2 at its tip, and a trapezoidal leaf spring 4 arranged to face the weight 2. The leaf spring 3.4 is fixed to the case 11 by a fixing member such as a screw 5. Further, the tip end 3a of the leaf spring 3 is held in pressure contact with the inner wall of the case 1 in the initial state.
上記構成の動作を説明する。走行中、自動車のフロント
部が何らかに衝突し、進行方向く図中下向）に対し、あ
る一定の減速度が生じたものとする。The operation of the above configuration will be explained. Assume that the front part of the automobile collides with something while driving, and a certain deceleration occurs in the direction of travel (downward in the figure).
この時、衝突により生じる減速度が板ばね３の先端部３
ａをケース１０の内側面に押し付ける力よりも大きくな
ると、ケース１の内側面に押し付けられていた板ばね３
が自身の板ばね３のばね圧に抗して進向方向に移動する
。これにより、挙り２が板ばね４に接触し、スイッチが
ＯＮとなり、エアパックを作動させ、ハンドルと頭、ハ
ンドルと顔等との衝突を防止するものである。衝突後は
、自身の弾性力により板ばね３の先端部３ａはケース１
の内壁に圧接されることになり、元の状態に戻る。At this time, the deceleration caused by the collision causes the tip 3 of the leaf spring 3 to
When the force that presses a against the inner surface of the case 10 becomes larger, the leaf spring 3 that was pressed against the inner surface of the case 1
moves in the advancing direction against the spring pressure of its own leaf spring 3. As a result, the handle 2 comes into contact with the leaf spring 4, turning on the switch and activating the air pack to prevent collisions between the handle and the head, the handle and the face, etc. After the collision, the tip 3a of the leaf spring 3 is moved to the case 1 by its own elastic force.
It will come into contact with the inner wall of the wall and return to its original state.
一般に、上記従来例のように板ばね３の重り２を板ばね
４側に移動させるような場合には、ある程度以下の減速
度の衝突（低速衝突）に関してはスイッチが作動しない
ように構成する必要がある。Generally, when the weight 2 of the leaf spring 3 is moved to the leaf spring 4 side as in the conventional example above, it is necessary to configure the switch so that it does not operate in the case of a collision with a deceleration below a certain level (low-speed collision). There is.
（例えば１６Ｆａ／ｈ以下とする。）そこで、１６触／
ｈ以上の衝突速度の場合のみ板ばね３の移動によりスイ
ッチがＯＮとなるように、板ばね３のばね圧を調節して
いた。(For example, 16 Fa/h or less.) Therefore, 16 Fa/h or less.
The spring pressure of the leaf spring 3 is adjusted so that the switch is turned ON by the movement of the leaf spring 3 only when the collision speed is higher than h.
しかしながら、上記従来の場合には、断続的なブレーキ
をかけたり、悪路を走行した際に重り２と板ばね３によ
って定まる振動数（固有振動数）と自動車の振動数が一
致した場合（共振状態）に振幅が大きくなり、これによ
り、重り２と板ばね３とが振動を繰り返すことになり、
自動車が衝突していないにもかかわらず、スイッチがＯ
Ｎとなってしまう同題点があった。However, in the above conventional case, when the frequency (natural frequency) determined by the weight 2 and leaf spring 3 matches the frequency of the vehicle (resonance state), the amplitude increases, which causes the weight 2 and leaf spring 3 to repeat vibrations,
The switch is turned on even though the car has not collided.
There was a point on the same topic that resulted in an N.
また、走行中、センサ一部に石等があたった場合には加
速度が大きく作用時間が短い衝撃（ハンマリング）が生
じ、更に急加速、急制動が生じた際には加速度が小さく
て作用時間が長い衝撃となるため、それぞれの場合にお
いて、スイッチが動作しなくて良いにもかかわらず、動
作する可能性が大きく、誤動作の原因につながるという
問題があった。In addition, if a stone or similar object hits a part of the sensor while driving, an impact (hammering) with high acceleration and short duration will occur, and when sudden acceleration or braking occurs, the acceleration will be small and the duration will be short. Since the shock is long, in each case, there is a high possibility that the switch will operate even though it does not need to operate, leading to malfunction.
よって、本発明は、上記従来の技術的課題を解決するた
めに成されたもので、共振を防ぎ、ハンマリングや急制
動による誤動作を防止することのできる衝突検出スイッ
チ装置を得ることを目的とする。Therefore, the present invention was made in order to solve the above-mentioned conventional technical problems, and an object of the present invention is to obtain a collision detection switch device that can prevent resonance and prevent malfunctions caused by hammering or sudden braking. do.
上記の技術的課題を解決するために、本発明は、底部に
接点部を有する第１のケースと、この第１のケース部上
に取付けられ、複数の空気流通孔及び移動部材を取付は
可能な取付孔を有する弾性部材と、一端が弾性部材に取
付けられ、他端に磁石を有して成る移動部材と、第１の
ケース部を覆い、初期状態において移動部材の磁石を吸
引可能な吸引部を有する第２のケースとを応えている。In order to solve the above technical problem, the present invention includes a first case having a contact part at the bottom, and a plurality of air circulation holes and a moving member that can be mounted on the first case part. an elastic member having a mounting hole; a movable member having one end attached to the elastic member and a magnet at the other end; and a suction member that covers the first case portion and is capable of attracting the magnet of the movable member in an initial state. A second case with a section is answered.
よって、本発明においては、第２のケースの吸引部によ
り移動部材の磁石を吸引しているので、この吸引力によ
り急制動による重りの移動を防止できる。また、弾性部
材に空気流通孔を形成しているので、この空気流通孔を
介して第１のケース部から第２のケース部側へ流れる空
気の粘性減衰抵抗を用いることによりハンマリングによ
る重りの移動を防止できる。Therefore, in the present invention, since the magnet of the moving member is attracted by the attraction portion of the second case, this attraction force can prevent the weight from shifting due to sudden braking. In addition, since air circulation holes are formed in the elastic member, by using the viscous damping resistance of the air flowing from the first case part to the second case part side through the air circulation holes, the weight due to hammering can be reduced. Movement can be prevented.
更に、粘性減衰抵抗が加わると、弾性部材と移動部材に
よって定まる振幅が徐々に小さくなり、自動車の振幅と
一致しなくなり、共振の発生を防止きる。Furthermore, when viscous damping resistance is added, the amplitude determined by the elastic member and the moving member gradually becomes smaller and no longer matches the amplitude of the automobile, thereby preventing resonance from occurring.
以下、本発明の実施例を図面を基にして説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は衝突検出スイッチ装置の断面図、第２図は衝突
検出スイッチ装置のステンレス薄板の平面図である。FIG. 1 is a sectional view of the collision detection switch device, and FIG. 2 is a plan view of a thin stainless steel plate of the collision detection switch device.
図において、１１は合成樹脂から成る第１のケースで、
この第１のケース１１には一対の固定接点１２が設けら
れている。第１のケース１１上には、ステンレス薄板１
３の周縁部１３ａが載置され、ステンレス薄板１３は中
央に移動部材１４を取付けるための取付孔１３ｂと、第
１のケース１１と第２のケース１５との空気の流通を行
うための空気流通孔１３Ｃが形成されている。そして、
ステンレス薄板１３の周縁部１３ａ上には、鉄から成る
第２のケース１５の下端部が載置されており、この第１
のケース１１と第２のケース１５を位置決め固定するた
めに、第１のケース１１の下方側には、固定接点１２の
端子１２ａを挿通可能な端子挿通孔１６ａを有し、ステ
ンレス等から成るケース保持部材１６が取付けられてい
る。移動部材１４はフェライト磁石１７を備えており、
移動部材１４の中央下部は、ステンレス薄板１３の取付
孔１３ｂに取付けられ、略Ｖ字状に形成された下端部１
４ａは、移動部材１４の移動時に固定接点１２の先端に
接触するように構成されている。In the figure, 11 is the first case made of synthetic resin,
This first case 11 is provided with a pair of fixed contacts 12 . On the first case 11, a thin stainless steel plate 1 is placed.
The thin stainless steel plate 13 has a mounting hole 13b in the center for mounting the moving member 14, and an air circulation hole for air circulation between the first case 11 and the second case 15. A hole 13C is formed. and,
The lower end of a second case 15 made of iron is placed on the peripheral edge 13a of the thin stainless steel plate 13.
In order to position and fix the case 11 and the second case 15, the first case 11 has a terminal insertion hole 16a on the lower side through which the terminal 12a of the fixed contact 12 can be inserted. A holding member 16 is attached. The moving member 14 includes a ferrite magnet 17,
The lower central portion of the movable member 14 is attached to the attachment hole 13b of the thin stainless steel plate 13, and has a lower end portion 1 formed in a substantially V shape.
4a is configured to come into contact with the tip of the fixed contact 12 when the movable member 14 moves.
また、移動部材１４の上端部１４ｂにはネジ部材１８の
下端部が当接され、このネジ部材１８を調節することに
より、磁石１７と第２のケース１５により定まる吸引力
を調節するものである。Further, the lower end of a screw member 18 is brought into contact with the upper end 14b of the moving member 14, and by adjusting the screw member 18, the attractive force determined by the magnet 17 and the second case 15 is adjusted. .
上記構成のもとで、自動車がある一定の減速度をもって
何らかに衝突すると、第２のケース１５と磁石１７との
吸引力に抗して磁石１７を有する移動部材１４がステン
レス薄板１３を下りに１尭ませる。そして、ステンレス
薄板１３に形成された槽数の空気流通孔１３Ｃを介して
、第１のケース１１内部から第２のケース１５内部側へ
空気が流通され、この空気の流通により生じる粘性減衰
抵抗に抗して移動部材１４の下端部１４ａの可動側接点
が一対の固定接点１２に接触し、スイッチがＯＮとなる
。With the above configuration, when a car collides with something at a certain deceleration, the moving member 14 having the magnet 17 moves down the thin stainless steel plate 13 against the attractive force between the second case 15 and the magnet 17. give birth to one child. Then, air is circulated from the inside of the first case 11 to the inside of the second case 15 through the air circulation holes 13C formed in the thin stainless steel plate 13, and the viscous damping resistance caused by this air circulation is The movable side contact of the lower end portion 14a of the moving member 14 comes into contact with the pair of fixed contacts 12, and the switch is turned on.
以上のように本発明においては、移動部材１４の磁石１
７が第２のケース１５に吸引される力により急制動によ
る低い加速度が生じた場合に移動部材１４の移動を抑制
するように構成している。As described above, in the present invention, the magnet 1 of the moving member 14
7 is configured to suppress movement of the movable member 14 when low acceleration occurs due to sudden braking due to the force attracted by the second case 15.
また、加速度が大きく作用時間の知いハンマリングが生
じた場合にはステンレス薄板１３の撓みにより生じる粘
性減衰抵抗を利用することにより固定接点１２．１２が
ＯＮされないようにしている。（粘性減衰抵抗は速度が
速いと大きくなり、速度が遅い場合には小さくなるため
１．）更に上記粘性減衰抵抗が加わると移動部材１４と
ステンレス薄板
に小さくなるため、自動車の振動数と一致しなくなり共
振の発生を防止できる。In addition, when the acceleration is large and hammering occurs for a limited time, the fixed contacts 12.12 are prevented from being turned on by utilizing the viscous damping resistance generated by the deflection of the thin stainless steel plate 13. (The viscous damping resistance increases when the speed is high and decreases when the speed is low.) If the above-mentioned viscous damping resistance is added, the moving member 14 and the thin stainless steel plate become smaller, so the frequency matches the vibration frequency of the car. This can prevent resonance from occurring.
よって本発明は、移動部材の磁石をケース側に吸引させ
、移動部材の先端部を弾性部材に取付け、弾性部材の空
気流通孔を介して第１のケース内部と第２のケース内部
間の空気の流通を行わせているので、共振を防止でき、
急制動、ハンマリングによる誤動作も防止できる。Therefore, in the present invention, the magnet of the moving member is attracted to the case side, the tip of the moving member is attached to the elastic member, and the air between the inside of the first case and the inside of the second case is drawn through the air circulation hole of the elastic member. , which prevents resonance.
It also prevents malfunctions caused by sudden braking or hammering.
第１図は本発明の衝突検出スイッチ装置の要部断面図、
第２図は本発明の弾性部材の平面図、第３図は従来例の
衝突検出スイッチ装置の要部断面図である。
１１・・・第１のケース
１２・・・固定節点（接点部）
１３・・・ステンレス薄板（弾性部材）１３ｂ・・・取
付孔
１３Ｇ・・・空気流通孔
１４・・・移動部材
１５・・・第２のケース
１７・・・磁石
第１図
第２図
第３図FIG. 1 is a cross-sectional view of the main parts of the collision detection switch device of the present invention;
FIG. 2 is a plan view of the elastic member of the present invention, and FIG. 3 is a sectional view of a main part of a conventional collision detection switch device. 11... First case 12... Fixed node (contact part) 13... Stainless steel thin plate (elastic member) 13b... Mounting hole 13G... Air circulation hole 14... Moving member 15...・Second case 17... Magnet Figure 1 Figure 2 Figure 3
Claims (1)
ース部上に取付けられ、複数の空気流通孔及び移動部材
を取付け可能な取付孔を有する弾性部材と、一端が弾性
部材に取付けられ、他端に磁石を有して成る移動部材と
、第１のケース部を覆い、初期状態において移動部材の
磁石を吸引可能な吸引部を有する第２のケースを備えた
ことを特徴とする衝突検出スイッチ装置。a first case part having a contact part at the bottom; an elastic member mounted on the first case part and having a plurality of air circulation holes and a mounting hole to which a moving member can be mounted; and one end mounted to the elastic member. The movable member has a magnet at the other end thereof, and a second case which covers the first case part and has an attraction part capable of attracting the magnet of the movable member in an initial state. Collision detection switch device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4804789A JPH02227926A (en) | 1989-02-28 | 1989-02-28 | Collision detecting switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4804789A JPH02227926A (en) | 1989-02-28 | 1989-02-28 | Collision detecting switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02227926A true JPH02227926A (en) | 1990-09-11 |
Family
ID=12792414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4804789A Pending JPH02227926A (en) | 1989-02-28 | 1989-02-28 | Collision detecting switch device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02227926A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938350A (en) * | 2012-11-23 | 2013-02-20 | 北京大学 | Micro-impulse breaker capable of prolonging contact time and producing method thereof |
-
1989
- 1989-02-28 JP JP4804789A patent/JPH02227926A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938350A (en) * | 2012-11-23 | 2013-02-20 | 北京大学 | Micro-impulse breaker capable of prolonging contact time and producing method thereof |
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