JPS6258243B2 - - Google Patents
Info
- Publication number
- JPS6258243B2 JPS6258243B2 JP55111335A JP11133580A JPS6258243B2 JP S6258243 B2 JPS6258243 B2 JP S6258243B2 JP 55111335 A JP55111335 A JP 55111335A JP 11133580 A JP11133580 A JP 11133580A JP S6258243 B2 JPS6258243 B2 JP S6258243B2
- Authority
- JP
- Japan
- Prior art keywords
- pendulum
- arm
- upper arm
- shaft
- groove
- 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
Links
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/433—Safety locks for back-rests, e.g. with locking bars activated by inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/20—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being tiltable, e.g. to permit easy access
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Description
【発明の詳細な説明】
本発明は、急激な車輛減速時等においては、ロ
アアームに回動自在に枢支されたペンデユラムの
係止爪が、ロアアームに傾動可能に支持されたア
ツパアームの係止溝に係合してアツパアームの回
動を規制し、シートバツクのロツクがなされるイ
ナーシヤルロツク式シートに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides that, when a vehicle suddenly decelerates, a locking pawl of a pendulum rotatably supported by a lower arm is fixed to a locking groove of an atsupah arm tiltably supported by the lower arm. This invention relates to an inertial lock type seat that engages with the upper arm to restrict rotation of the upper arm and lock the seat back.
従来のこの種のシートは、ペンデユラムの摩擦
トルクを小さくするため回転軸の軸径を小さく
し、アツパアームからの力はペンデユラムの他の
部分で受けるように構成されている。しかし、実
際には回転軸の軸径をそれ程小さくできず、この
ため、ペンデユラムのレスポンスが悪いという問
題があつた。又、回転軸と別個にアツパアームか
らの力を受ける機構が設けられているため、構成
が複雑になるという問題もあつた。 Conventional seats of this type are configured so that the diameter of the rotating shaft is made small in order to reduce the frictional torque of the pendulum, and the force from the upper arm is received by other parts of the pendulum. However, in reality, the diameter of the rotating shaft could not be made that small, and as a result, there was a problem that the response of the pendulum was poor. Furthermore, since a mechanism for receiving the force from the upper arm is provided separately from the rotating shaft, there is also the problem that the structure becomes complicated.
本発明は、以上の点に鑑みてなされたもので、
その目的とするところは、ペンデユラムのレスポ
ンスが優れ、しかも構成が簡単なイナーシヤルロ
ツク式シートを実現することにある。 The present invention has been made in view of the above points, and
The aim is to create an inertial lock type seat that has excellent pendulum response and is simple to configure.
以下、図面を用いながら本発明の一実施例を詳
細に説明する。第１図乃至第３図において、１，
２はシートクツシヨン（図示せず）側に固着され
る一対のロアアームで、メインロアアーム１は平
板から成り、サブロアアーム２は折曲平板から成
つている。３はロアアーム１，２間に配設され上
部はシートバツク（図示せず）側に固着されるア
ツパアームで、このアツパアーム３の両面にはス
ペーサ４が配置されている。又、アツパアーム３
の貫通穴５、ロアアーム１，２の同軸貫通穴６，
７及びスペーサ４には、段付シヤフト８が挿通さ
れ、Ｅリング９でもつて抜け止めがなされてい
る。即ち、アツパアーム３はロアアーム１，２に
傾動可能に支持されている。更に、アツパアーム
３には、円弧状長穴１０、係止溝１１及びシート
バツク傾動用平面１２が設けられている。１３は
段付ピンで、両端末部がロアアーム１，２の同軸
貫通穴１４，１５に挿通され、中央部が円弧状長
穴１０に挿通されるものである。１６はロアアー
ム１，２の同軸貫通穴１７，１８へ挿通後にＥリ
ング１９で抜け止めがなされるシヤフトで、ロア
アーム１，２間の空隙に位置するローレツト部２
０には、対数スパイラル形（ρ＝ρ0e〓但し、
ρ；動径の長さ、ρ０；基礎円の半径、θ；動径
の角度）のカム２１が圧入されている。このカム
２１は、アツパアーム３のシートバツク傾動用平
面１２と当接している。又、シヤフト１６のサプ
ロアアーム２側の端末部２２には、操作ハンドル
２３が小ねじ２４によつて固着されている。この
操作ハンドル２３の回動規制は、シヤフト１６の
延出部２５とサブロアアーム２の起立部２６との
共働によつてなされる。２７はペンデユラムで、
下方の錘部２８、側方の係止爪２９及び中央のシ
ヤフト３０から構成されている。ペンデユラム２
７のシヤフト３０は、スペーサ３１およびロアア
ーム１，２の軸受用長穴３２，３３に挿通され
る。また、このシヤフト３０の下部には全長にわ
たつて突起３４が形成されている。即ち、シヤフ
ト３０の断面形状は、第４図に示す如く、大円ａ
（例えば半径４mm）と小円ｂ（例えば半径0.6mm）
とを、これらに接する直線ｃ及び円弧ｄ（例えば
半径５mm）で結ぶことによつて得られるものであ
る。又、軸受用長穴３２，３３の内周面下部に
は、突起３４と摺接する溝３５，３６が形成され
ている。この軸受用長穴３２，３３の形状は、第
５図に示す如く、小円b′の中心に関して大円a′を
θ（例えば18゜）だけ回転させたときの軌跡が描
く図形と小円b′とを、これらに接する直線c′及び
円弧d′で結ぶことによつて得られるものである。
尚、大円ａと小円ｂとの中心間隔と、大円a′と小
円b′との中心間隔とは等しく選ばれ、又、大円
ａ，a′の半径についてはa′の方が僅かながら（例
えば0.1〜0.2mm）大きく選ばれている。したがつ
て、シヤフト３０の突起３４が軸受用長穴３２，
３３の溝３５，３６内で摺動でき、これによつ
て、ペンデユラム２７はロアアーム１，２に回動
自在に枢支されることになる。しかし、反時計方
向への回動はサブロアアーム２の折曲部３７によ
つて規制されている。尚、シヤフト３０の大円ａ
の中心と小円ｂの中心とを結ぶ直線が、角度γ
（第４図参照）だけ傾斜しているのは、アツパア
ーム３からの力を、十分な強度の大円ａ，a′部分
で支えるためである。又、ロアアーム１，２は組
立後溶接等によつて一体的に固着される。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. 1 to 3, 1,
Reference numeral 2 designates a pair of lower arms fixed to a seat cushion (not shown), the main lower arm 1 being made of a flat plate, and the sub lower arm 2 being made of a bent flat plate. Reference numeral 3 designates an upper arm disposed between the lower arms 1 and 2, the upper part of which is fixed to a seat back (not shown), and spacers 4 are arranged on both sides of the upper arm 3. Also, Atsupa Arm 3
through hole 5, coaxial through hole 6 of lower arms 1, 2,
A stepped shaft 8 is inserted through the spacer 7 and the spacer 4, and is prevented from coming off by an E ring 9. That is, the upper arm 3 is tiltably supported by the lower arms 1 and 2. Further, the upper arm 3 is provided with an arcuate elongated hole 10, a locking groove 11, and a flat surface 12 for tilting the seat back. Reference numeral 13 designates a stepped pin, whose both end portions are inserted into the coaxial through holes 14 and 15 of the lower arms 1 and 2, and whose central portion is inserted into the circular arc-shaped elongated hole 10. Reference numeral 16 denotes a shaft that is prevented from coming off by an E ring 19 after being inserted into the coaxial through holes 17 and 18 of the lower arms 1 and 2, and the shaft is secured by a knurled portion 2 located in the gap between the lower arms 1 and 2.
0 has a logarithmic spiral shape (ρ=ρ 0 e〓However,
A cam 21 is press-fitted with ρ: length of the radius vector, ρ 0 : radius of the base circle, θ: angle of the radius vector. This cam 21 is in contact with the seat back tilting plane 12 of the upper arm 3. Further, an operating handle 23 is fixed to the terminal portion 22 of the shaft 16 on the side of the lower arm 2 with a machine screw 24. The rotation of the operating handle 23 is restricted by the cooperation of the extending portion 25 of the shaft 16 and the upright portion 26 of the sub-lower arm 2. 27 is a pendulum,
It is composed of a lower weight portion 28, side locking claws 29, and a central shaft 30. pendulum 2
The shaft 30 of No. 7 is inserted into the spacer 31 and the elongated bearing holes 32 and 33 of the lower arms 1 and 2. Further, a protrusion 34 is formed at the lower part of the shaft 30 over the entire length. That is, the cross-sectional shape of the shaft 30 is a great circle a, as shown in FIG.
(for example, radius 4 mm) and small circle b (for example, radius 0.6 mm)
and by connecting them with a straight line c and a circular arc d (for example, radius 5 mm). Furthermore, grooves 35 and 36 are formed in the lower portions of the inner circumferential surfaces of the bearing elongated holes 32 and 33 to make sliding contact with the projections 34. As shown in FIG. 5, the shapes of the bearing elongated holes 32 and 33 are the same as the figure drawn by the trajectory when the large circle a' is rotated by θ (for example, 18 degrees) about the center of the small circle b'. b' by a straight line c' and a circular arc d' that are tangent to these.
Furthermore, the distance between the centers of the great circle a and the small circle b and the center distance between the great circle a' and the small circle b' are selected to be equal, and the radius of the great circles a and a' is selected to be equal to that of the center of the great circle a and the small circle b. is selected to be slightly large (for example, 0.1 to 0.2 mm). Therefore, the projection 34 of the shaft 30 is connected to the elongated bearing hole 32,
33, the pendulum 27 can be slid within the grooves 35, 36 of the lower arms 1, 2, thereby allowing the pendulum 27 to be rotatably supported by the lower arms 1, 2. However, the counterclockwise rotation is restricted by the bending portion 37 of the sub lower arm 2. Furthermore, the great circle a of shaft 30
The straight line connecting the center of and the center of small circle b is the angle γ
The reason why it is inclined by the angle shown in FIG. 4 is to support the force from the upper arm 3 with the large circles a and a' having sufficient strength. Further, the lower arms 1 and 2 are fixed together by welding or the like after assembly.
このように構成された実施例装置の作動を次に
説明する。通常は、第１図に示す如く、ペンデユ
ラム２７の係止爪２９はアツパアーム３の係止溝
１１と係合していない。したがつて、アツパアー
ム３は、ピン１３に円弧状長穴１０の下面が当接
するまで、即ち第１図の（）の位置まで前倒し
得る。しかし、急ブレーキや衝突等による車輛減
速時や、坂道での車輛前傾時等においては、慣性
力や重力の働きによつて、錘部２８が前方に移動
するため、ペンデユラム２７が時計方向に回動
し、係止爪２９が係止溝１１と係合する。したが
つて、この場合にはアツパアーム３は回動規制さ
れ、前倒できない。 The operation of the thus constructed embodiment apparatus will now be described. Normally, the locking pawl 29 of the pendulum 27 does not engage with the locking groove 11 of the upper arm 3, as shown in FIG. Therefore, the upper arm 3 can be moved forward until the lower surface of the arc-shaped elongated hole 10 contacts the pin 13, that is, to the position shown in parentheses in FIG. However, when the vehicle decelerates due to sudden braking or a collision, or when the vehicle leans forward on a slope, the weight 28 moves forward due to inertia and gravity, so the pendulum 27 moves clockwise. The locking claw 29 engages with the locking groove 11 by rotation. Therefore, in this case, the rotation of the upper arm 3 is restricted and cannot be moved forward.
アツパアーム３の後倒に関しては、アツパアー
ム３の平面１２がストツパとしてのカム２１に当
接するまで可能である。このカム２１の回動は操
作ハンドル２３を回動することによつて行なえ
る。したがつて、操作ハンドル２３の操作で、ア
ツパアーム３の傾斜角を第１図の（）〜（）
の範囲内で任意に調節できる。 The upper arm 3 can be tilted backward until the flat surface 12 of the upper arm 3 comes into contact with the cam 21 as a stopper. This rotation of the cam 21 can be performed by rotating the operating handle 23. Therefore, by operating the operating handle 23, the inclination angle of the atsupah arm 3 can be changed from () to () in FIG.
It can be adjusted arbitrarily within the range.
尚、上記の説明においては、シヤフト３０の断
面形状や軸受用長穴３２，３３の形状として大円
ａ，a′と小円ｂ，b′との中心距離が大円ａ，a′の
半径より大きいものを示したが、必ずしもこれに
限る必要はない。例えば第６図のようなものであ
つても良い。又、シヤフト３０の全長にわたつて
突起３４を形成したものを示したが、軸受用長穴
３２，３３との接触部分にのみ突起３４を形成し
ても良い。更に、シヤフト３０に突起３４を形成
し軸受用長穴３２，３３に溝３５，３６を形成し
たものを示したが、第７図に示す如く、シヤフト
３０に溝を形成し、軸受用長穴３２，３３に突起
を形成することも可能である。又、第８図に示す
如く、ペンデユラム２７として錘部２８の一部と
しての係止爪２９を有するものを用い、これをア
ツパアーム３の後方に配置することも可能であ
る。 In the above explanation, the cross-sectional shape of the shaft 30 and the shape of the long bearing holes 32, 33 are such that the center distance between the large circles a, a' and the small circles b, b' is the radius of the large circles a, a'. Although a larger one is shown, it is not necessarily limited to this. For example, it may be as shown in FIG. Furthermore, although the shaft 30 is shown in which the protrusions 34 are formed over its entire length, the protrusions 34 may be formed only in the portions that contact the bearing elongated holes 32 and 33. Furthermore, although a projection 34 is formed on the shaft 30 and grooves 35 and 36 are formed in the long bearing holes 32 and 33, as shown in FIG. It is also possible to form protrusions on 32 and 33. Further, as shown in FIG. 8, it is also possible to use a pendulum 27 having a locking pawl 29 as a part of the weight portion 28, and to arrange this at the rear of the upper arm 3.
以上説明したように、本発明に係るイナーシヤ
ルロツク式シートにおいては、ペンデユラムのシ
ヤフト下部の突起又は溝と、軸受用長穴の内周面
下部の溝又は突起との摺動面を、アツパアームの
回動中心に近接して配置できるため、摩擦トルク
を激減させることができる。このため、レスポン
スの優れたものを得ることができる。又、車輛減
速時等にアツパアームからペンデユラムに加えら
れる力を、別個の支持機構ではなく、強度的に十
分なシヤフトの大円部分で受けるようになつてい
る。このため、構成がきわめて簡単なものであ
る。特に、対数スパイラル形のカムを併せて使用
すれば、構成が非常に簡単なリクライニングシー
トを得ることができる。 As explained above, in the inertial lock type seat according to the present invention, the sliding surface between the protrusion or groove at the lower part of the shaft of the pendulum and the groove or protrusion at the lower part of the inner peripheral surface of the elongated bearing hole is Since it can be placed close to the center of rotation, frictional torque can be drastically reduced. Therefore, it is possible to obtain an excellent response. Further, the force applied from the upper arm to the pendulum when the vehicle is decelerated is received by the large circular portion of the shaft, which has sufficient strength, rather than by a separate support mechanism. Therefore, the configuration is extremely simple. In particular, if a logarithmic spiral cam is also used, a reclining seat with a very simple structure can be obtained.
第１図乃至第８図は本発明に係るイナーシヤル
ロツク式シートの実施例の説明図で、第１図は側
面図、第２図は第１図のAA断面図、第３図は分
解斜視図、第４図はペンデユラムのシヤフトの断
面図、第５図はロアアームの軸受用長穴の詳細
図、第６図及び第７図はペンデユラムのシヤフト
とロアアームの軸受用長穴の他の形状を示す構成
図、第８図はペンデユラム等の他の形状を示す構
成図である。
１…メインロアアーム、２…サブロアアーム、
３…アツパアーム、８…段付シヤフト、１１…係
止溝、１２…シートバツク傾動用平面、１３…段
付ピン、１６…シヤフト、２１…カム（ストツ
パ）、２３…操作ハンドル、２７…ペンデユラ
ム、２８…錘部、２９…係止爪、３０…シヤフ
ト、３２，３３…軸受用長穴、３４…突起、３
５，３６…溝。
Figures 1 to 8 are explanatory diagrams of an embodiment of the inertial lock type seat according to the present invention, where Figure 1 is a side view, Figure 2 is a sectional view along AA of Figure 1, and Figure 3 is an exploded perspective view. Figure 4 is a sectional view of the pendulum shaft, Figure 5 is a detailed view of the bearing elongated hole in the lower arm, and Figures 6 and 7 show other shapes of the pendulum shaft and lower arm bearing elongated hole. The configuration diagram shown in FIG. 8 is a configuration diagram showing other shapes such as a pendulum. 1...Main lower arm, 2...Sub lower arm,
3... Upper arm, 8... Stepped shaft, 11... Locking groove, 12... Seat back tilting plane, 13... Stepped pin, 16... Shaft, 21... Cam (stopper), 23... Operation handle, 27... Pendulum, 28 ... Weight part, 29 ... Locking pawl, 30 ... Shaft, 32, 33 ... Long hole for bearing, 34 ... Projection, 3
5, 36...groove.
Claims (1)
自在に枢支されたペンデユラムの係止爪がロアア
ームに傾動可能に支持されたアツパアームの係止
溝に係合してアツパアームの回動を規制し、シー
トバツクのロツクがなされるイナーシヤルロツク
式シートにおいて、ペンデユラムのシヤフト下部
に突起又は溝を形成し、更にこの突起又は溝と摺
接する溝又は突起を、ロアアームに穿設された軸
受用長穴の内周面下部に形成すると共に、車輛減
速時等には偏位した前記ペンデユラムのシヤフト
を前記軸受用長穴内周面で支えることによりアツ
パアームの前方への回動規制を行ない、又後方へ
の回動規制は常にアツパアームをストツパに当接
することにより行なうように構成したことを特徴
とするイナーシヤルロツク式シート。 ２ ロアアームに装着された操作ハンドルによつ
て回動される対数スパイラル形のカムを、アツパ
アームの後方への回動規制を行なうストツパとし
て用いたことを特徴とする特許請求の範囲第１項
記載のイナーシヤルロツク式シート。[Claims] 1. When the vehicle suddenly decelerates, the locking pawl of the pendulum rotatably supported by the lower arm engages with the locking groove of the upper arm tiltably supported by the lower arm. In an inertial lock type seat that restricts the rotation of the upper arm and locks the seat back, a protrusion or groove is formed at the bottom of the shaft of the pendulum, and a groove or protrusion that comes into sliding contact with the protrusion or groove is bored in the lower arm. In addition, when the vehicle decelerates, the shaft of the pendulum that is displaced is supported by the inner circumferential surface of the elongated bearing hole, thereby restricting the forward rotation of the atsupa arm. An inertial lock type seat characterized in that it is configured such that the rearward rotation is controlled by always bringing the upper arm into contact with the stopper. 2. Claim 1, characterized in that a logarithmic spiral cam rotated by an operating handle attached to the lower arm is used as a stopper for restricting rearward rotation of the upper arm. Inertial lock type seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11133580A JPS5737029A (en) | 1980-08-12 | 1980-08-12 | Inertial lock system seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11133580A JPS5737029A (en) | 1980-08-12 | 1980-08-12 | Inertial lock system seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5737029A JPS5737029A (en) | 1982-03-01 |
| JPS6258243B2 true JPS6258243B2 (en) | 1987-12-04 |
Family
ID=14558584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11133580A Granted JPS5737029A (en) | 1980-08-12 | 1980-08-12 | Inertial lock system seat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5737029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0256747U (en) * | 1988-10-19 | 1990-04-24 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10327654B4 (en) * | 2003-06-20 | 2008-12-24 | Keiper Gmbh & Co.Kg | Locking device for a vehicle seat |
| JP4984966B2 (en) * | 2007-02-28 | 2012-07-25 | トヨタ紡織株式会社 | Vehicle seat |
| JP5113458B2 (en) * | 2007-08-31 | 2013-01-09 | 株式会社今仙電機製作所 | Frame structure for vehicle seat |
| CN110758431B (en) * | 2017-11-06 | 2021-02-12 | 北京交通大学 | Safety seat with forward-leaning backrest buffering energy-absorbing hydraulic cylinder |
-
1980
- 1980-08-12 JP JP11133580A patent/JPS5737029A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0256747U (en) * | 1988-10-19 | 1990-04-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5737029A (en) | 1982-03-01 |
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