JPS6317861Y2 - - Google Patents

Info

Publication number
JPS6317861Y2
JPS6317861Y2 JP6079283U JP6079283U JPS6317861Y2 JP S6317861 Y2 JPS6317861 Y2 JP S6317861Y2 JP 6079283 U JP6079283 U JP 6079283U JP 6079283 U JP6079283 U JP 6079283U JP S6317861 Y2 JPS6317861 Y2 JP S6317861Y2
Authority
JP
Japan
Prior art keywords
gear
diameter
bracket
shaft
core metal
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
Application number
JP6079283U
Other languages
Japanese (ja)
Other versions
JPS59166020U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP6079283U priority Critical patent/JPS59166020U/en
Publication of JPS59166020U publication Critical patent/JPS59166020U/en
Application granted granted Critical
Publication of JPS6317861Y2 publication Critical patent/JPS6317861Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Pivots And Pivotal Connections (AREA)

Description

【考案の詳細な説明】 本考案はそれぞれ相手部品に固定される2個の
ブラケツトが回転軸を介して回動可能に連結され
た回動装置におけるロツク装置に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking device for a rotating device in which two brackets each fixed to a mating part are rotatably connected via a rotating shaft.

この種のロツク装置は、各種椅子のリクライニ
ング、及びヘツドレスト、フツトレスト等の角度
調節機構に用いられており、従来、回転軸それ自
体を軸ロツクばねのコイル部で締め付けるスプリ
ングクラツチ方式の軸ロツク装置があつた。
This type of locking device is used for the reclining of various chairs and the angle adjustment mechanism of headrests, footrests, etc. Conventionally, the shaft locking device is a spring clutch type in which the rotating shaft itself is tightened by the coil part of the shaft locking spring. It was hot.

しかしながら、この軸ロツク装置は軸ロツクば
ねの材料の強度以上のロツク力を得ることができ
ないので、より大きなロツク力を得る為には軸ロ
ツクばねの材料径を大きくしなければならなかつ
た。このためより大きなロツク力を得るためには
おのずと回転軸等の関連部品も大きくせざるを得
ず、装置全体が大型化して取付面積上の制約を受
けるとともに、経済的にも問題となつていた。
However, this shaft locking device cannot obtain a locking force greater than the strength of the material of the shaft locking spring, so in order to obtain a greater locking force, the diameter of the material of the shaft locking spring must be increased. Therefore, in order to obtain a larger locking force, related parts such as the rotating shaft must also be made larger, which increases the size of the entire device, which limits the mounting area and also poses an economical problem. .

本考案は上記した事情に鑑みてなされたもので
あり、軸ロツクばねのロツク力を噛合する2個の
ギヤのギヤ径比によつて増大可能としたコンパク
トで経済的にも有利な回動装置におけるロツク装
置を提供せんとするものである。
The present invention was devised in view of the above-mentioned circumstances, and is a compact and economically advantageous rotating device in which the locking force of the shaft locking spring can be increased by changing the gear diameter ratio of the two meshing gears. The purpose of this invention is to provide a locking device for a vehicle.

以下、本考案を図示した実施例に基づいて具体
的に説明する。
Hereinafter, the present invention will be specifically explained based on illustrated embodiments.

図は、それぞれ相手部品に固定される2個のブ
ラケツト1,2が回転軸3を介して回動可能に連
結された回動装置におけるロツク装置4を示す。
The figure shows a locking device 4 in a rotating device in which two brackets 1 and 2, each fixed to a mating part, are rotatably connected via a rotating shaft 3.

ロツク装置4は、ブラケツト1の端部の回転軸
3を中心とした円周上に刻設した歯5aを有する
略扇形状の第1のギヤ5と、ブラケツト2に植設
された芯金6に回動自在に装着され、かつ第1の
ギヤ5と噛合されている第2のギヤ7と、上記芯
金6に芯金6の外径よりも小径の内径を有するコ
イル部8aが拡径されて外挿され、かつコイル部
8aの両端のうち一端8bを自由端とし他端8c
を第2のギヤ7に枢支された軸ロツクばね8とか
ら構成されている。そして、第1のギヤ5の径R
と第2のギヤ7の径rとの比がR/r〉1となつ
ている。
The locking device 4 includes a substantially fan-shaped first gear 5 having teeth 5a carved on the circumference around the rotating shaft 3 at the end of the bracket 1, and a core metal 6 implanted in the bracket 2. A second gear 7 is rotatably attached to the core metal 6 and meshed with the first gear 5, and a coil portion 8a having an inner diameter smaller than the outer diameter of the core metal 6 is expanded in diameter. one end 8b of both ends of the coil portion 8a is a free end, and the other end 8c is
and a shaft locking spring 8 pivotally supported by the second gear 7. And the diameter R of the first gear 5
and the diameter r of the second gear 7 is R/r>1.

尚、9は第1のギヤ5に穿設された長孔、10
はブラケツト2に植設されて上記長孔9を透通す
るストツパーピンであり、この長孔9とストツパ
ーピン10とによりブラケツト1の回動は角度α
以内に拘束される。11,12はEリングであ
る。
In addition, 9 is a long hole drilled in the first gear 5, and 10 is a long hole bored in the first gear 5.
is a stopper pin that is implanted in the bracket 2 and passes through the elongated hole 9. The elongated hole 9 and the stopper pin 10 allow the bracket 1 to rotate at an angle α.
be restrained within 11 and 12 are E rings.

次にロツク装置4の作動について説明する。 Next, the operation of the lock device 4 will be explained.

まず、ブラケツト1へa方向の負荷が加わつた
場合について述べる。
First, the case where a load is applied to the bracket 1 in the a direction will be described.

ブラケツト1へのa方向の負荷は、第1のギヤ
5を介して第2のギヤ7をb方向へ回動させるよ
うに作用するとともに軸ロツクばね8に対しても
その他端8cを介してコイル部8aが巻締められ
るように作用する。
The load applied to the bracket 1 in the direction a acts to rotate the second gear 7 in the direction b via the first gear 5, and also acts on the shaft locking spring 8 via the other end 8c of the coil. This acts to tighten the portion 8a.

従つて、ブラケツト1へa方向の負荷が加わつ
た場合、第1のギヤ5及び第2のギヤ7を介して
軸ロツクばね8が芯金6をより強く締め付けるた
め、ブラケツト1はa方向へ回動することなくロ
ツクされる。このときのロツク力は軸ロツクばね
8の芯金6に対する締め付け力(ばね材料の強
度)のみではなくその締め付け力の(第1のギヤ
径R/第2のギヤ径r)倍の力となる。このため
第1のギヤ径/第2のギヤ径〉1以上に設計する
ことより、軸ロツクばね8の材料強度以上のロツ
ク力を得ることができる。
Therefore, when a load is applied to the bracket 1 in the a direction, the shaft locking spring 8 tightens the core bar 6 more strongly via the first gear 5 and the second gear 7, so the bracket 1 rotates in the a direction. Locked without movement. The locking force at this time is not only the clamping force (strength of the spring material) of the shaft locking spring 8 against the core metal 6, but also the force times the clamping force (first gear diameter R/second gear diameter r). . Therefore, by designing the first gear diameter/second gear diameter>1 or more, a locking force greater than the material strength of the shaft locking spring 8 can be obtained.

尚、ブラケツト1へa方向の過大の負荷が加わ
つた場合、軸ロツクばね8と芯金6との間に辷り
を生じ第2のギヤ7はb方向へ回動しかつブラケ
ツト1はa方向へ回動して上記過大負荷を避ける
ことができるようになつている。
If an excessive load is applied to the bracket 1 in the direction a, a slippage will occur between the shaft locking spring 8 and the core metal 6, causing the second gear 7 to rotate in the direction b and the bracket 1 to move in the direction a. It is designed so that it can be rotated to avoid the above-mentioned overload.

次に、ブラケツト1へa方向とは反対のc方向
の負荷が加わつた場合について述べる。
Next, a case will be described in which a load is applied to the bracket 1 in the direction c, which is opposite to the direction a.

ブラケツト1へのc方向の負荷は、第1のギヤ
5を介して第2のギヤ7をd方向へ回動させるよ
うに作用するとともに軸ロツクばね8に対しては
その他端8cを介してコイル部8aが拡径するよ
うに作用する。
The load applied to the bracket 1 in the c direction acts to rotate the second gear 7 in the d direction via the first gear 5, and also acts on the shaft locking spring 8 to rotate the coil via the other end 8c. The portion 8a acts to expand in diameter.

従つて、ブラケツト1へc方向の負荷が加わつ
た場合、該負荷は第1のギヤ5及び第2のギヤ7
を介して軸ロツクばね8のコイル部8aを拡径す
るので、ブラケツト1は小さな力でc方向へ回動
可能となる。
Therefore, when a load is applied to the bracket 1 in the c direction, the load is applied to the first gear 5 and the second gear 7.
Since the diameter of the coil portion 8a of the shaft locking spring 8 is expanded through the bracket 1, the bracket 1 can be rotated in the direction c with a small force.

本考案に係るロツク装置は以上のような構造及
び作動を有するので次の様な実用上の効果を奏す
る。
Since the locking device according to the present invention has the structure and operation described above, it has the following practical effects.

即ち、本考案によれば軸ロツクばねのロツク力
を第1のギヤ径と第2のギヤ径との比により拡大
することができるので、軸ロツクばねのロツク力
以上のロツク力を得たい場合でも上記ばね材料の
径を大きくしたり、芯金等の関連部品も大きくし
たりすることが全く不要となり、軽量でしかも全
体をコンパクトにした回動装置におけるロツク装
置を提供することができる。
That is, according to the present invention, the locking force of the shaft locking spring can be increased by the ratio of the first gear diameter to the second gear diameter, so when it is desired to obtain a locking force greater than the locking force of the shaft locking spring. However, it is completely unnecessary to increase the diameter of the spring material or to increase the size of related parts such as a core metal, and it is possible to provide a locking device for a rotating device that is lightweight and compact as a whole.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図及び第2図は本考案に係る回動装置にお
けるロツク装置の実施例があり、第1図はその平
面図、第2図はその側面図である。 1,2……ブラケツト、3……回転軸、4……
ロツク装置、5……第1のギヤ、6……芯金、7
……第2のギヤ、8……軸ロツクばね、R……第
1のギヤ径、r……第2のギヤ径。
1 and 2 show an embodiment of a locking device in a rotating device according to the present invention, FIG. 1 is a plan view thereof, and FIG. 2 is a side view thereof. 1, 2... Bracket, 3... Rotating shaft, 4...
Lock device, 5... First gear, 6... Core metal, 7
...Second gear, 8...Shaft lock spring, R...First gear diameter, r...Second gear diameter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] それぞれ相手部品に固定される2個のブラケツ
トが回転軸を介して回動可能に連結された回動装
置において、一方のブラケツトの端部に設けられ
た第1のギヤと、他方のブラケツトに植設された
芯金に回動自在に装着され、かつ上記第1のギヤ
と噛合されている第2のギヤと、上記芯金に芯金
の外径よりも小径のコイル部が拡径されて外挿さ
れ、かつ上記コイル部の両端のうち一端を自由端
とし他端を上記第2のギヤに枢支された軸ロツク
ばねとを具備し、上記第1のギヤ径/第2のギヤ
径>1であることを特徴とする回動装置における
ロツク装置。
In a rotating device in which two brackets, each fixed to a mating part, are rotatably connected via a rotating shaft, a first gear provided at the end of one bracket and a first gear installed at the end of the other bracket are connected. A second gear is rotatably attached to the provided core metal and meshed with the first gear, and the core metal has a coil portion having an enlarged diameter smaller than the outer diameter of the core metal. and a shaft locking spring which is externally inserted and has one end of the coil portion as a free end and the other end pivotally supported by the second gear, and the first gear diameter/second gear diameter. A locking device in a rotating device, characterized in that >1.
JP6079283U 1983-04-25 1983-04-25 Locking device in rotating device Granted JPS59166020U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6079283U JPS59166020U (en) 1983-04-25 1983-04-25 Locking device in rotating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6079283U JPS59166020U (en) 1983-04-25 1983-04-25 Locking device in rotating device

Publications (2)

Publication Number Publication Date
JPS59166020U JPS59166020U (en) 1984-11-07
JPS6317861Y2 true JPS6317861Y2 (en) 1988-05-20

Family

ID=30191024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6079283U Granted JPS59166020U (en) 1983-04-25 1983-04-25 Locking device in rotating device

Country Status (1)

Country Link
JP (1) JPS59166020U (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102063575B1 (en) * 2018-05-30 2020-01-08 국방과학연구소 Hinge device capable of adjusting rotation range

Also Published As

Publication number Publication date
JPS59166020U (en) 1984-11-07

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