JP3148300B2 - Shaft locking device - Google Patents
Shaft locking deviceInfo
- Publication number
- JP3148300B2 JP3148300B2 JP25559191A JP25559191A JP3148300B2 JP 3148300 B2 JP3148300 B2 JP 3148300B2 JP 25559191 A JP25559191 A JP 25559191A JP 25559191 A JP25559191 A JP 25559191A JP 3148300 B2 JP3148300 B2 JP 3148300B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- leaf spring
- outer shaft
- peripheral portion
- display panel
- 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 - Lifetime
Links
Landscapes
- Details Of Measuring And Other Instruments (AREA)
- Pivots And Pivotal Connections (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、ラップトップ
型のパソコンあるいはワープロ等で使用され、ディスプ
レイ盤をキーボード等を備えた本体に対して任意の角度
で位置固定することができる軸ロック装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft lock device used in, for example, a laptop personal computer or a word processor, which can fix a display panel at an arbitrary angle with respect to a main body having a keyboard or the like. About.
【０００２】[0002]
【従来の技術】一般に、ラップトップ型のパソコンある
いはワープロ等のディスプレイ盤は、通常キーボード等
を備えた本体に閉じた状態で収納されており、本体から
開いた状態で使用される。そして、使用する際において
は、使用状態や使用場所等の条件により照明等の光がデ
ィスプレイ盤の画面で反射する等の理由で画面上の文字
や絵等が見づらいことがあるため、ディスプレイ盤を本
体に対して任意の角度で位置固定することができるよう
になっている。2. Description of the Related Art Generally, a display panel such as a laptop personal computer or a word processor is usually stored in a closed state in a main body having a keyboard and the like, and is used in an open state from the main body. At the time of use, characters such as lights and reflections on the screen of the display panel may be difficult to see due to reflection of light on the screen of the display panel depending on conditions such as a use state and a use place. The position can be fixed at an arbitrary angle with respect to the main body.
【０００３】ディスプレイ盤を本体に対して任意の角度
で位置固定するための軸ロック装置としては、例えば実
開平１−１３５３９７号公報に開示されているもの等が
あげられる。この軸ロック装置は、可動軸と、この可動
軸と同一径を有して可動軸の両側に設けられた固定軸
と、可動軸と固定軸とに密接状態で外挿されるコイルバ
ネとを備える構造のものであり、可動軸が一方に回転す
ると、一方の固定軸に密接状態で外挿されている部分の
コイルバネが縮径してロックトルクを生じるとともに、
他方の固定軸に密接状態で外挿されている部分のコイル
バネが拡径してスリップトルクを生じ、このロックトル
クとスリップトルクとの和が可動軸に作用してディスプ
レイ盤を任意の角度で位置固定するものである。A shaft lock device for fixing the position of the display panel at an arbitrary angle with respect to the main body includes, for example, the one disclosed in Japanese Utility Model Laid-Open Publication No. 1-13597. The shaft lock device includes a movable shaft, a fixed shaft having the same diameter as the movable shaft and provided on both sides of the movable shaft, and a coil spring which is extrapolated in close contact with the movable shaft and the fixed shaft. When the movable shaft rotates to one side, the coil spring of the part extrapolated in close contact with one fixed shaft is reduced in diameter and generates a lock torque,
The coil spring in the portion extrapolated in close contact with the other fixed shaft expands in diameter to generate slip torque, and the sum of the lock torque and the slip torque acts on the movable shaft to position the display panel at an arbitrary angle. It is fixed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな構造の軸ロック装置は、コイルバネの力によってデ
ィスプレイ盤を任意の角度で位置固定するため、コイル
バネはある程度の径を確保しなければならず、よって該
軸ロック装置の小型化・軽量化には限界があった。ま
た、可動軸とこの可動軸の中央の大径部を挟んだ両側の
固定軸とにコイルバネが密接状態で外挿されていること
が必要であるため、可動軸の大径部および両側の固定軸
の外径が実質的に同一であることを必要とし製作コスト
が高くなってしまうという問題があった。そして、この
製作コストは軸径が小さくなるほど増大し、この理由も
該軸ロック装置の小型化・軽量化を困難とした。However, in the shaft lock device having such a structure, since the position of the display panel is fixed at an arbitrary angle by the force of the coil spring, the coil spring must secure a certain diameter. Therefore, there is a limit in reducing the size and weight of the shaft lock device. In addition, since the coil spring needs to be extrapolated in close contact with the movable shaft and the fixed shafts on both sides of the large-diameter portion at the center of the movable shaft, the large-diameter portion of the movable shaft and the fixing on both sides are fixed. There is a problem that the outer diameter of the shaft needs to be substantially the same and the manufacturing cost increases. The manufacturing cost increases as the shaft diameter decreases, which also makes it difficult to reduce the size and weight of the shaft lock device.
【０００５】したがって、本発明の目的は、小型・軽量
であって低コストで製作できる軸ロック装置を提供する
ことである。Accordingly, it is an object of the present invention to provide a shaft lock device which is small and lightweight and can be manufactured at low cost.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明の軸ロック装置は、筒状部分を有する外部軸
と、該外部軸の内側に回転自在に設けられるとともに、
少なくともその一部が該外部軸の筒状部分の内周部との
間に空間部を構成する内部軸と、前記空間部に挿入さ
れ、前記外部軸の内周部と前記内部軸の外周部とに面接
触しつつこれらを径方向に相反するよう付勢するリング
状の板バネとを有し、前記板バネは、前記外部軸の内周
部に面接触する径方向外方凸の凸部と前記内部軸の外周
部に面接触する径方向内方凸の凹部とが円周方向に交互
に設けられていることを特徴としている。In order to achieve the above object, a shaft lock device of the present invention is provided with an outer shaft having a cylindrical portion, and rotatably provided inside the outer shaft.
An inner shaft, at least a portion of which forms a space between the inner periphery of the cylindrical portion of the outer shaft, and an inner periphery of the outer shaft and an outer periphery of the inner shaft, which are inserted into the space; and a ring-shaped plate spring that conflicting so urging these in the radial direction while in surface contact with bets, the plate spring, the inner periphery of the outer shaft
Radially outwardly convex portion that comes into surface contact with the portion and the outer periphery of the internal shaft
The radially inwardly convex recesses that are in surface contact with the parts alternate in the circumferential direction
It is characterized by being provided in .
【０００７】[0007]
【作用】本発明の軸ロック装置によれば、外部軸の筒状
部分の内周部と内部軸の少なくとも一部で構成される空
間部に挿入されたリング状の板バネが、外部軸の内周部
と内部軸の外周部とに面接触しつつこれらを径方向に相
反するよう付勢しているため、外部軸と内部軸とが相対
回転すると、その相対回転によって摩擦抵抗を生じて外
部軸と内部軸との間にトルクを発生させることになる。
したがって、この摩擦抵抗によるトルクを上回るトルク
が外部軸と内部軸との間に加わればこれらは相対回転す
ることになり、この摩擦抵抗によるトルクを下回るトル
クが外部軸と内部軸との間に加わってもこれらは相対回
転しないことになる。しかも、板バネは外部軸の内周部
と内部軸の外周部とに面接触しているため摩擦抵抗を大
きく確保できることになる。加えて、板バネは、径方向
外方凸の凸部で外部軸の内周部に面接触するとともに径
方向内方凸の凹部で内部軸の外周部に面接触しており、
このような凸部と凹部とが円周方向に交互に設けられて
いるため、内部軸が外部軸に対し径方向に移動しにくい
構造となり、内部軸の径方向の変位を防止できる。 According to the shaft lock device of the present invention, the ring-shaped leaf spring inserted into the space formed by the inner peripheral portion of the cylindrical portion of the outer shaft and at least a part of the inner shaft is provided. Since the inner and outer shafts are in surface contact with each other and are urged to be radially opposite to each other, when the outer and inner shafts rotate relative to each other, the relative rotation causes frictional resistance. A torque will be generated between the outer shaft and the inner shaft.
Therefore, if a torque exceeding the torque due to this frictional resistance is applied between the external shaft and the internal shaft, they rotate relative to each other, and a torque less than the torque due to the frictional resistance is applied between the external shaft and the internal shaft. However, they do not rotate relative to each other. In addition, since the leaf spring is in surface contact with the inner peripheral portion of the outer shaft and the outer peripheral portion of the inner shaft, a large frictional resistance can be secured. In addition, the leaf spring
The outer convex part makes surface contact with the inner peripheral part of the external shaft and
The surface is in contact with the outer periphery of the internal shaft at the concave portion that is convex in the direction.
Such convex portions and concave portions are provided alternately in the circumferential direction.
The inner shaft is less likely to move radially with respect to the outer shaft
With this structure, radial displacement of the internal shaft can be prevented.
【０００８】具体的には、例えばラップトップ型装置の
本体を外部軸側に設け、ディスプレイ盤を内部軸側に設
けて、ディスプレイ盤を開閉するのに必要なトルクをリ
ング状の板バネの摩擦抵抗によるトルクより大とし、デ
ィスプレイ盤の自重によるトルクを板バネの摩擦抵抗に
よるトルクより小とすれば、任意の角度でディスプレイ
盤を位置固定できることになる。Specifically, for example, a main body of a laptop device is provided on an outer shaft side, and a display panel is provided on an inner shaft side, and a torque required for opening and closing the display panel is adjusted by friction of a ring-shaped leaf spring. If the torque due to the resistance is larger than the torque due to the weight of the display panel and the torque due to the frictional resistance of the leaf spring, the position of the display panel can be fixed at an arbitrary angle.
【０００９】[0009]
【実施例】本発明の一実施例による軸ロック装置を図１
〜図４を参照して以下に説明する。なお、図１は本実施
例の図２におけるＡ−Ａ線に沿う断面図、図２は本実施
例を部分的に断面とした正面図、図３は本実施例を図２
における左側から見た側面図、図４は本実施例の軸ロッ
ク装置が適用されるラップトップ型のパソコンあるいは
ワープロ等（以下ラップトップ型装置と称す）の一部を
破断した斜視図をそれぞれ示している。1 shows a shaft lock device according to one embodiment of the present invention.
This will be described below with reference to FIGS. 1 is a cross-sectional view of the present embodiment along the line AA in FIG. 2, FIG. 2 is a front view of the present embodiment with a partial cross section, and FIG.
And FIG. 4 is a perspective view in which a part of a laptop-type personal computer or a word processor (hereinafter referred to as a laptop-type device) to which the shaft lock device of the present embodiment is applied is cut away. ing.
【００１０】図中、符号１は軸ロック装置、符号２はそ
の外部軸、符号３は外部軸２の内側に回転自在に設けら
れる内部軸、符号４は外部軸２の内周部２ａと内部軸３
の外周部３ａとで形成される空間部５に挿入されるリン
グ状の板バネをそれぞれ示しており、外部軸２および内
部軸３は鋼材により作製されている。また、図４におい
て符号Ｙは本実施例の軸ロック装置１が適用されるラッ
プトップ型装置の本体、符号Ｚはこの本体Ｙに対して開
閉するディスプレイ盤を示している。なお、外部軸２お
よび内部軸３は他の金属で作製することもでき、勿論樹
脂等により作製することも可能である。In the drawings, reference numeral 1 denotes an axis locking device, reference numeral 2 denotes an outer shaft thereof, reference numeral 3 denotes an inner shaft rotatably provided inside the outer shaft 2, and reference numeral 4 denotes an inner peripheral portion 2 a of the outer shaft 2 and an inner portion thereof. Axis 3
And a ring-shaped leaf spring inserted into a space portion 5 formed by the outer peripheral portion 3a, and the outer shaft 2 and the inner shaft 3 are made of a steel material. In FIG. 4, reference numeral Y denotes a main body of a laptop device to which the shaft lock device 1 of the present embodiment is applied, and reference numeral Z denotes a display panel that opens and closes with respect to the main body Y. Note that the outer shaft 2 and the inner shaft 3 can be made of another metal, and of course, can be made of resin or the like.
【００１１】外部軸２は、中空状の円筒部６と、該円筒
部６の外周部から径方向外方（図１における下方）に延
在し相互に接合する二ケ所の平板部７とを有する形状を
なしており、これら接合状態の平板部７には本体Ｙに取
り付けのための取付穴８が図２における左右に二ケ所貫
通して設けられている。なお、外部軸２は上記形状に一
枚の板部材から板金により成形されており、成形後上記
両平板部７は例えばスポット溶接等により相互に固着さ
れることになる。また外部軸２には、板バネ４の回転を
規制するよう例えばカシメ等で形成される内方凸の突起
部９が設けられている。The outer shaft 2 has a hollow cylindrical portion 6 and two flat plate portions 7 extending radially outward (downward in FIG. 1) from the outer peripheral portion of the cylindrical portion 6 and joined to each other. In the joined flat plate portion 7, mounting holes 8 for mounting to the main body Y are provided so as to penetrate two places on the left and right in FIG. The outer shaft 2 is formed from a single plate member into a sheet metal in the above-described shape, and after the forming, the flat plate portions 7 are fixed to each other by, for example, spot welding. Further, the outer shaft 2 is provided with an inwardly projecting projection 9 formed by, for example, caulking so as to regulate the rotation of the leaf spring 4.
【００１２】内部軸３は、その外周部３ａと外部軸２の
内周部２ａとの間で所定間隔の空間部５を形成する軸部
１０と、該軸部１０の図２における左側端部に設けられ
外部軸２から外部に突出するとともにこの軸部１０の上
下を平行に切り欠いた形状をなす係合部１１を有してお
り、この係合部１１はディスプレイ盤Ｚに係合して（図
４参照）該ディスプレイ盤Ｚの開閉により内部軸３自体
を回転させるためのものである。The inner shaft 3 has a shaft portion 10 forming a space 5 at a predetermined interval between the outer peripheral portion 3a and the inner peripheral portion 2a of the outer shaft 2, and a left end portion of the shaft portion 10 in FIG. And an engaging portion 11 projecting from the external shaft 2 to the outside and having a shape in which the upper and lower portions of the shaft portion 10 are cut out in parallel. The engaging portion 11 engages with the display panel Z. (See FIG. 4) to rotate the internal shaft 3 itself by opening and closing the display panel Z.
【００１３】また、内部軸３には、外部軸２が所定の取
付位置にあるときにその両端面２ｂから所定量離間した
位置にそれぞれ溝部１２が形成されている。そして、外
部軸２の両端面２ｂの外側には板バネ４の抜け止め用の
ワッシャ１３がそれぞれ設けられており、上記溝部１２
にはこれらのワッシャ１３を外部軸２の各端面２ｂとの
間で挾持する止め輪（Ｅリング）１４がそれぞれ係止さ
れている。When the outer shaft 2 is at a predetermined mounting position, grooves 12 are formed in the inner shaft 3 at positions separated from the opposite end faces 2b by a predetermined amount. Outside the two end faces 2b of the outer shaft 2, washers 13 for preventing the leaf springs 4 from coming off are provided, respectively.
A retaining ring (E-ring) 14 for holding these washers 13 between the end faces 2b of the outer shaft 2 is locked.
【００１４】板バネ４は、その軸方向に沿って延在する
径方向内方凸の凹部１５および径方向外方凸の凸部１６
が交互に配設されたリング状のもので、その一端には同
軸方向に沿って延在する開口部１７が設けられている。
すなわち、この板バネ４は、バネ性を有する金属製の板
部材を交互に凹凸形状をなすように成形し概略円筒状に
丸めたもので、この板部材の両端部が上記開口部１７を
構成しているのである。なお、この板バネ４は樹脂等に
より作製することも可能である。The leaf spring 4 has a radially inwardly convex concave portion 15 and a radially outwardly convex convex portion 16 extending along its axial direction.
Are alternately arranged, and one end thereof is provided with an opening 17 extending along the coaxial direction.
That is, the leaf spring 4 is formed by alternately forming metal plate members having spring properties so as to form irregularities and rounding them into a substantially cylindrical shape. Both ends of the plate member constitute the opening 17. It is doing. The leaf spring 4 can be made of resin or the like.
【００１５】そして、この板バネ４は、各凸部１６の外
周面を結んだ円の径が外部軸２の内周部２ａの径よりも
若干大きく、各凹部１５の内周面を結んだ円の径が内部
軸３の軸部１０の外周部３ａの径より若干小さく形成さ
れており、外部軸２と内部軸３との間の空間部５に圧入
され、外部軸２の内周部２ａと内部軸３の外周部３ａと
に面接触しつつこれらの間に所定の抵抗を発生させるよ
うこれらを径方向に付勢するものである。なお、本実施
例においては外部軸２の両端位置に板バネ４が二つ圧入
されており、この圧入時の締め代分は開口部１７の間隔
が変化することで吸収されることになる。また、上記し
た外部軸２の突起部９は板バネ４の凹部１５に係合して
いる。In the leaf spring 4, the diameter of the circle connecting the outer peripheral surfaces of the convex portions 16 is slightly larger than the diameter of the inner peripheral portion 2 a of the outer shaft 2, and connects the inner peripheral surfaces of the concave portions 15. The diameter of the circle is formed to be slightly smaller than the diameter of the outer peripheral portion 3a of the shaft portion 10 of the inner shaft 3, and is press-fitted into the space 5 between the outer shaft 2 and the inner shaft 3, and the inner peripheral portion of the outer shaft 2 While radially contacting the outer peripheral portion 3a of the inner shaft 3 with the inner shaft 2a, these are radially urged so as to generate a predetermined resistance therebetween. In the present embodiment, two leaf springs 4 are press-fitted at both ends of the external shaft 2, and the interference at the time of press-fitting is absorbed by changing the interval between the openings 17. The protrusion 9 of the outer shaft 2 is engaged with the recess 15 of the leaf spring 4.
【００１６】このような構造の本実施例の軸ロック装置
１において、取付穴８を介して外部軸２側に設けられた
本体Ｙに対して、係合部１１を介して内部軸３側に設け
られたディスプレイ盤Ｚを開閉しようとすると、外部軸
２によって回転の規制がされた板バネ４と内部軸３との
間に摩擦抵抗を生じ、これらの間にトルクが発生するこ
とになる。ここで、ディスプレイ盤Ｚを開閉するのに必
要なトルクがこの板バネ４と内部軸３との間の摩擦抵抗
によるトルクより大となったときに、ディスプレイ盤Ｚ
は内部軸３を外部軸２に対して相対回転させ開閉するこ
とになる。また、ディスプレイ盤Ｚを固定するべく開閉
のトルクを除去すると、外部軸２と内部軸３との間に
は、ディスプレイ盤Ｚの自重により閉じようとするトル
クのみが作用することになり、このトルクは外部軸２に
よって回転が規制された板バネ４と内部軸３との間の摩
擦抵抗によるトルクより小となって、任意の角度で位置
固定されることになる。In the shaft lock device 1 of this embodiment having such a structure, the main body Y provided on the outer shaft 2 side via the mounting hole 8 is connected to the inner shaft 3 side via the engaging portion 11. When an attempt is made to open and close the provided display panel Z, frictional resistance is generated between the leaf spring 4 whose rotation is restricted by the external shaft 2 and the internal shaft 3, and torque is generated therebetween. Here, when the torque required to open and close the display panel Z becomes larger than the torque due to the frictional resistance between the leaf spring 4 and the internal shaft 3, the display panel Z
Means that the inner shaft 3 is rotated relative to the outer shaft 2 to open and close. Also, if the opening and closing torque is removed to fix the display panel Z, only the torque for closing the display panel Z due to its own weight acts between the external shaft 2 and the internal shaft 3, and this torque is applied. Is smaller than the torque due to the frictional resistance between the leaf spring 4 whose rotation is restricted by the outer shaft 2 and the inner shaft 3, and is fixed at an arbitrary angle.
【００１７】ここで、人の力によってディスプレイ盤Ｚ
を容易に開閉できかつディスプレイ盤Ｚの自重ではこれ
が閉じないようにするために、板バネ４の数を変更した
り、各凹部１５の内周面を結んだ円の径と内部軸３の軸
部１０の径との差および各凸部１６の外周面を結んだ円
の径と外部軸２の内周部２ａの径との差（いわゆる圧入
代）を適宜変更したり、凹部１５および凸部１６の数を
変更したりすること等が可能である。Here, the display panel Z is driven by human power.
The number of the leaf springs 4 can be changed, and the diameter of the circle connecting the inner peripheral surfaces of the recesses 15 and the axis of the internal shaft 3 can be easily opened and closed and can be prevented from being closed by the weight of the display panel Z. The difference between the diameter of the portion 10 and the difference between the diameter of the circle connecting the outer peripheral surfaces of the respective convex portions 16 and the diameter of the inner peripheral portion 2a of the outer shaft 2 (so-called press-fitting allowance) can be changed as appropriate, It is possible to change the number of the units 16 or the like.
【００１８】なお、本実施例においては、板バネ４が上
記構成をなすものを例にとり説明したが、板バネ４は、
外部軸２と内部軸３とに規定の回転のためのトルクを付
与するためこれらに面接触しつつこれらを径方向に相反
するよう付勢するものであれば、これに限られることな
く種々の変更を施すことができる。In this embodiment, the leaf spring 4 has the above-described configuration as an example.
There is no limitation to this as long as the outer shaft 2 and the inner shaft 3 are urged so as to radially oppose each other while being in surface contact with each other so as to apply a prescribed rotation torque to the outer shaft 2 and the inner shaft 3. Changes can be made.
【００１９】また、本実施例においては、外部軸２側で
板バネ４の回転を規制するものを例にとり説明したが、
内部軸３側でこの板バネ４の回転を規制するものでもよ
く、勿論この板バネ４の回転を規制しなくてもよい。た
だし、回転のためのトルクを高精度で管理するために
は、いずれか一方に固定するのが好ましい。Further, in this embodiment, an example in which the rotation of the leaf spring 4 is restricted on the side of the external shaft 2 has been described.
The rotation of the leaf spring 4 may be restricted on the inner shaft 3 side, and the rotation of the leaf spring 4 need not be restricted. However, in order to control the torque for rotation with high accuracy, it is preferable to fix the torque to one of them.
【００２０】さらに、本実施例においては、いずれもラ
ップトップ型装置Ｘの本体Ｙを外部軸２側に直接設け、
ディスプレイ盤Ｚを内部軸３側に設ける構造のものを例
にとり説明したが、勿論、外部軸２と内部軸３を逆に設
ける構造とすることも可能であり、また外部軸２をブラ
ケット等を介して本体Ｙに取り付けたりすることも可能
である。さらに、上記ラップトップ型装置に限らず種々
の物に適用することも勿論可能である。Further, in this embodiment, the main body Y of the laptop type device X is provided directly on the external shaft 2 side,
Although the structure in which the display panel Z is provided on the side of the internal shaft 3 has been described as an example, it is needless to say that the structure in which the external shaft 2 and the internal shaft 3 are provided in reverse is also possible. It is also possible to attach to the main body Y via an interface. Further, it is needless to say that the present invention can be applied not only to the above-mentioned laptop device but also to various things.
【００２１】[0021]
【発明の効果】以上詳述したように、本発明の軸ロック
装置によれば、空間部に設けられたリング状の板バネが
摩擦抵抗を生じ外部軸と内部軸との間にトルクを発生さ
せてこれらの軸をロックすることになり、しかも、板バ
ネは外部軸の内周部と内部軸の外周部とに面接触してい
るため摩擦抵抗を大きく確保できることになる。したが
って、コイルバネ、同径の可動軸および固定軸を必要し
ないため、小型化・軽量化が図れ、低コストで製作でき
る。加えて、板バネは、径方向外方凸の凸部で外部軸の
内周部に面接触するとともに径方向内方凸の凹部で内部
軸の外周部に面接触しており、このような凸部と凹部と
が円周方向に交互に設けられているため、内部軸が外部
軸に対し径方向に移動しにくい構造となり、内部軸の径
方向の変位を防止できる。 As described above in detail, according to the shaft lock device of the present invention, the ring-shaped leaf spring provided in the space generates frictional resistance and generates torque between the outer shaft and the inner shaft. As a result, these shafts are locked, and furthermore, since the leaf spring is in surface contact with the inner peripheral portion of the outer shaft and the outer peripheral portion of the inner shaft, a large frictional resistance can be secured. Therefore, since a coil spring, a movable shaft having the same diameter, and a fixed shaft are not required, the size and weight can be reduced and the device can be manufactured at low cost. In addition, the leaf spring has a radially outward convex
Surface contact with the inner peripheral part and inside with a concave part that is convex inward in the radial direction
It is in surface contact with the outer periphery of the shaft.
Are arranged alternately in the circumferential direction, so that the inner shaft is
It is difficult to move in the radial direction with respect to the shaft.
Direction displacement can be prevented.
【図１】本発明の一実施例による軸ロック装置の図２に
おけるＡ−Ａ線に沿う断面図である。1 is a cross-sectional view of the shaft lock device according to one embodiment of the present invention, taken along line AA in FIG. 2;
【図２】本発明の一実施例による軸ロック装置を部分的
に断面とした正面図である。FIG. 2 is a partially sectional front view of the shaft lock device according to the embodiment of the present invention.
【図３】本発明の一実施例による軸ロック装置の図２に
おける左側から見た側面図である。3 is a side view of the shaft lock device according to one embodiment of the present invention as viewed from the left side in FIG. 2;
【図４】本発明の一実施例による軸ロック装置が適用さ
れるラップトップ型装置を示す一部を破断した斜視図で
ある。FIG. 4 is a partially cutaway perspective view showing a laptop device to which the shaft lock device according to one embodiment of the present invention is applied;
１ 軸ロック装置 ２ 外部軸 ２ａ 内周部 ３ 内部軸 ３ａ 外周部 ４ 板バネ ５ 空間部 Reference Signs List 1 shaft lock device 2 outer shaft 2a inner peripheral portion 3 inner shaft 3a outer peripheral portion 4 leaf spring 5 space portion
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G12B 5/00 F16C 11/10 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) G12B 5/00 F16C 11/10
Claims (1)
くともその一部が該外部軸の筒状部分の内周部との間に
空間部を構成する内部軸と、 前記空間部に挿入され、前記外部軸の内周部と前記内部
軸の外周部とに面接触しつつこれらを径方向に相反する
よう付勢するリング状の板バネとを有し、 前記板バネは、前記外部軸の内周部に面接触する径方向
外方凸の凸部と前記内部軸の外周部に面接触する径方向
内方凸の凹部とが円周方向に交互に設けられている こと
を特徴とする軸ロック装置。A space is provided between an outer shaft having a tubular portion and a rotatable inner portion of the outer shaft, at least a portion of which is formed between an inner peripheral portion of the tubular portion of the outer shaft. An inner shaft to be configured, and a ring-shaped leaf spring that is inserted into the space portion and urges the inner peripheral portion of the outer shaft and the outer peripheral portion of the inner shaft to face each other while being in surface contact with each other. has, the leaf spring is radially into surface contact with the inner peripheral portion of the outer shaft
Radial direction that makes surface contact with the convex part of the outward convex and the outer peripheral part of the internal shaft
A shaft lock device, wherein inwardly convex concave portions are provided alternately in a circumferential direction .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25559191A JP3148300B2 (en) | 1991-10-02 | 1991-10-02 | Shaft locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25559191A JP3148300B2 (en) | 1991-10-02 | 1991-10-02 | Shaft locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05240971A JPH05240971A (en) | 1993-09-21 |
| JP3148300B2 true JP3148300B2 (en) | 2001-03-19 |
Family
ID=17280857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25559191A Expired - Lifetime JP3148300B2 (en) | 1991-10-02 | 1991-10-02 | Shaft locking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3148300B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3350037B1 (en) * | 2001-07-23 | 2002-11-25 | 株式会社椿本チエイン | Tensioner with protrusion prevention hook |
| JP6371695B2 (en) * | 2014-12-05 | 2018-08-08 | 株式会社東海理化電機製作所 | Vehicle visual recognition device |
-
1991
- 1991-10-02 JP JP25559191A patent/JP3148300B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05240971A (en) | 1993-09-21 |
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