JPH0747579Y2 - Friction lock device - Google Patents
Friction lock deviceInfo
- Publication number
- JPH0747579Y2 JPH0747579Y2 JP432190U JP432190U JPH0747579Y2 JP H0747579 Y2 JPH0747579 Y2 JP H0747579Y2 JP 432190 U JP432190 U JP 432190U JP 432190 U JP432190 U JP 432190U JP H0747579 Y2 JPH0747579 Y2 JP H0747579Y2
- Authority
- JP
- Japan
- Prior art keywords
- friction
- shaft body
- holding member
- shaft
- spring
- 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 - Fee Related
Links
Landscapes
- Pivots And Pivotal Connections (AREA)
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案はラップトップタイプのパーソナルコンピュー
タ，ワードプロセッサなどのディスプレイ装置の角度調
整や回転蓋の角度調整に適用することができる摩擦ロッ
ク装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a friction lock device that can be applied to an angle adjustment of a display device such as a laptop type personal computer and a word processor and an angle adjustment of a rotary lid.
［従来の技術］ 上述のようなラップトップタイプの電子機器では、その
ディスプレイ装置を見易い角度に保持する必要があり、
ディスプレイ装置の回転を摩擦力によってロックする摩
擦ロック装置が従来より使用されている。[Prior Art] In a laptop type electronic device as described above, it is necessary to hold the display device at an angle that is easy to see,
A friction lock device that locks the rotation of a display device by frictional force has been conventionally used.
第13図〜第15図はこの摩擦ロック装置の従来例を示す。
段付きの軸体20の小径部20aがブラケット21内を回転可
能に貫通している。この貫通に際して、軸体20の大径部
20b端面とブラケット21との間には摩擦部材22が介挿さ
れている。また、ブラケット21の外側にはウエーブスプ
リング23が当接すると共に、このウエーブスプリング23
の外側に平座金24が設けられている。そして、軸体20の
小径部20aの端部20cをかしめることにより、これらの抜
け止めがなされると共に、そのかしめ力Ｆによりブラケ
ット21,摩擦部材22および軸体20の大径部20bを圧接する
ようになっている。このような摩擦ロック装置は例え
ば、ディスプレイ装置の枢支部位に設けられるものであ
り、その軸体20をディスプレイ装置に連結し、ブラケッ
ト21を本体に固定することにより、上記部材間の摩擦力
でディスプレイ装置の傾角保持を行うことができる。13 to 15 show a conventional example of this friction lock device.
A small diameter portion 20a of the stepped shaft body 20 rotatably penetrates through the bracket 21. At the time of this penetration, the large diameter part of the shaft 20
A friction member 22 is inserted between the end face of 20b and the bracket 21. A wave spring 23 abuts on the outer side of the bracket 21, and the wave spring 23
A plain washer 24 is provided on the outside of the. Then, by caulking the end portion 20c of the small diameter portion 20a of the shaft body 20, these are prevented from coming off, and the caulking force F presses the bracket 21, the friction member 22 and the large diameter portion 20b of the shaft body 20. It is supposed to do. Such a friction lock device is provided, for example, in a pivotal portion of the display device. By connecting the shaft body 20 to the display device and fixing the bracket 21 to the main body, the frictional force between the members can be reduced. The tilt angle of the display device can be maintained.
［考案が解決しようとする課題］ 従来の摩擦ロック装置では、ブラケット21との接触で摩
擦部材22が経時的に摩耗し、この摩耗によって摩擦力が
低下して回転ロックが減少する。このため耐久性に乏し
いものとなっている。また、軸体20はその正逆いずれの
方向も同じ大きさの摩擦力によって回転ロックが行われ
るため、適用機器に応じては十分な特性を発揮すること
ができず、フィーリングが合わないこともある。[Problems to be Solved by the Invention] In the conventional friction lock device, the friction member 22 wears over time due to contact with the bracket 21, and this wear reduces the frictional force and reduces the rotation lock. Therefore, it has poor durability. Further, since the shaft body 20 is rotationally locked by the frictional force of the same magnitude in both the forward and reverse directions, sufficient characteristics cannot be exhibited depending on the applied device, and the feeling does not match. There is also.
本考案はこのような事情を考慮してなされたものであ
り、長期の間、安定した回転ロックを行うことができ、
しかも適用機器に応じた特性を有した摩擦ロック装置を
提供することを目的としている。The present invention has been made in consideration of such circumstances, and can perform stable rotation lock for a long period of time.
Moreover, it is an object of the present invention to provide a friction lock device having characteristics according to the applied equipment.
［課題を解決するための手段］ 上記目的を達成するため本考案は軸体と、軸体を相対的
に回転可能に保持する保持部材と、前記軸体と保持部材
との間に介挿され軸体と保持部材との相対回転で摩擦力
を生じる摩擦部材と、この摩擦部材を軸方向に加圧する
ばねと、前記摩擦部材とばねとの間に位置して前記軸体
及び保持部材にそれぞれ回転を拘束されると共に軸体の
軸方向に移動可能に取り付けられ前記軸体と保持部材と
の相対回転によって前記ばねの加圧力を変化させる一対
のカム部材とを備えていることを特徴としている。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a shaft body, a holding member that holds the shaft body in a relatively rotatable manner, and an insertion member between the shaft body and the holding member. A friction member that generates a frictional force by relative rotation between the shaft member and the holding member, a spring that axially presses the friction member, and a shaft member and a holding member that are located between the friction member and the spring, respectively. A pair of cam members that are restrained from rotating and are movably mounted in the axial direction of the shaft body and that change the pressing force of the spring by the relative rotation between the shaft body and the holding member. .
［作用］ ばねは一対のカム部材を介して、摩擦部材が摩耗しても
常に一定な摩擦力を生じさせるように作用する。また、
一対のカム部材は回転に伴ってこのばね加圧力を変化さ
せるため、回転方向に応じて摩擦力が変化するようにな
っている。[Operation] The spring acts via the pair of cam members so as to always generate a constant frictional force even when the friction member is worn. Also,
Since the pair of cam members change this spring pressure force as they rotate, the frictional force changes depending on the direction of rotation.
［実施例］ 第１図〜第９図は本考案の一実施例を示し、段付きの軸
体１、有底筒形状の保持部材２、パイプ形状の摩擦部材
３、カム7,8および圧縮ばね６を備えて摩擦ロック装置
が構成されている。軸体１はその小径部1aが保持部材２
の底部を貫通する一方、その大径部1bの先端部は回転力
が伝達されるように矩形断面となっている。これら軸体
１および保持部材２は相互に回転するように組み付けら
れる。摩擦部材３はゴムなどの可撓性材料によってパイ
プ状に成形されており、軸体１の小径部1aが貫通するよ
うに保持部材２の筒部内に挿入されている。この場合、
摩擦部材３に貫通する小径部1a外面にはローレット溝や
凹凸溝などが形成されており、摩擦部材３に圧入すると
軸体１と摩擦部材３とが一体化されて、これらが保持部
材２に対して一体的に相対回転するようになっている。
また、摩擦部材３は保持部材２内面との間に所定のクリ
アランスを有する外形寸法に成形されている。カム7,8
はこのような摩擦部材３の外側に位置するように保持部
材２の筒部内に設けられている。これらカム7,8は軸体
１の小径部1aの軸方向に移動可能に取り付けられるが、
一方のカム７は保持部材２に回転が拘束され、他方のカ
ム８は軸体１に回転が拘束されている。このため、カム
７の外周面および保持部材２の内周面は第２図に示すよ
うに、非円形断面で嵌合されると共に、カム８の内周面
および軸体１の小径部1aの外周面は第３図に示すように
非円形断面で嵌合されている。かかるカム7,8の対向面
には第８図および第９図に示すようなカム面7a,8aがそ
れぞれ形成されている。これらカム面7aおよび8aは相互
に摺接すると共に軸体１の一方向回転ではカム7,8が接
近するが、他方向回転では離反するように移動可能とな
る形状に成形されている。圧縮ばね６はこのようなカム
7,8の外側に位置するように軸体１の小径部1aに外挿さ
れている。この圧縮ばね６の右端部はカム８の後面に当
接する一方、左端面は軸体１に取り付けられた平座金５
に当接されている。そして、平座金５のさらに外側の軸
体部分にはプッシュナット４が押し込まれている。この
ような組付により圧縮ばね６はカム7,8を介して摩擦部
材３を軸方向に加圧している。この加圧により摩擦部材
３はその外径が拡大するため保持部材２の内面に圧接し
て、同部材２との間に摩擦力が生じる。従って軸体１の
大径部1bを例えば、ディスプレイ装置に連結する一方、
保持部材２を電子機器の本体に固着することにより、摩
擦部材３と保持部材２との間の摩擦力で軸体１の回転が
ロックされるため、ディスプレイ装置の傾角保持を行う
ことができる。なお、この場合、プッシュナット４の押
し力を調整して摩擦部材３の軸方向の加圧を行うことも
できる。[Embodiment] FIG. 1 to FIG. 9 show an embodiment of the present invention, in which a stepped shaft body 1, a bottomed cylindrical holding member 2, a pipe-shaped friction member 3, cams 7, 8 and compression are shown. A friction lock device is configured by including the spring 6. The shaft 1 has a holding member 2 with a small diameter portion 1a.
While penetrating the bottom part of the, the tip of the large diameter part 1b has a rectangular cross section so that the rotational force is transmitted. The shaft body 1 and the holding member 2 are assembled so as to rotate relative to each other. The friction member 3 is formed into a pipe shape with a flexible material such as rubber, and is inserted into the cylindrical portion of the holding member 2 so that the small diameter portion 1a of the shaft body 1 penetrates. in this case,
A knurled groove, an uneven groove, or the like is formed on the outer surface of the small diameter portion 1a penetrating the friction member 3, and when the friction member 3 is press-fitted, the shaft body 1 and the friction member 3 are integrated, and these are attached to the holding member 2. It is designed to rotate relative to one another.
Further, the friction member 3 is formed to have an outer dimension having a predetermined clearance with the inner surface of the holding member 2. Cam 7,8
Is provided in the cylindrical portion of the holding member 2 so as to be positioned outside the friction member 3. These cams 7 and 8 are attached so as to be movable in the axial direction of the small diameter portion 1a of the shaft body 1.
The rotation of one cam 7 is restricted by the holding member 2, and the rotation of the other cam 8 is restricted by the shaft 1. Therefore, as shown in FIG. 2, the outer peripheral surface of the cam 7 and the inner peripheral surface of the holding member 2 are fitted in a non-circular cross section, and the inner peripheral surface of the cam 8 and the small diameter portion 1a of the shaft body 1 are formed. The outer peripheral surface is fitted with a non-circular cross section as shown in FIG. Cam surfaces 7a and 8a as shown in FIGS. 8 and 9 are formed on the facing surfaces of the cams 7 and 8, respectively. The cam surfaces 7a and 8a are in sliding contact with each other, and are shaped so that the cams 7 and 8 approach each other when the shaft 1 rotates in one direction, but move away from each other when the shaft 1 rotates in the other direction. The compression spring 6 is such a cam
It is externally inserted into the small diameter portion 1a of the shaft body 1 so as to be located outside the 7,8. The right end of the compression spring 6 contacts the rear surface of the cam 8, while the left end surface of the compression spring 6 is a flat washer 5 attached to the shaft body 1.
Is abutted against. The push nut 4 is pushed into the shaft body portion further outside the flat washer 5. With such an assembly, the compression spring 6 axially presses the friction member 3 via the cams 7 and 8. Due to this pressurization, the outer diameter of the friction member 3 increases, so that the friction member 3 is pressed against the inner surface of the holding member 2 and a frictional force is generated between the friction member 3 and the holding member 2. Therefore, while connecting the large diameter portion 1b of the shaft body 1 to, for example, a display device,
By fixing the holding member 2 to the main body of the electronic device, the rotation of the shaft body 1 is locked by the frictional force between the friction member 3 and the holding member 2, so that the inclination of the display device can be held. In this case, the pressing force of the push nut 4 can be adjusted to pressurize the friction member 3 in the axial direction.
このような本実施例では、摩擦部材３が経時的に摩耗し
ても、圧縮ばね６により軸方向に加圧されて拡径するた
め、保持部材２との接触状態を維持することができる。
このため長期の間、安定した摩擦力を得ることができ、
耐久性の良好な回転ロックを行うことができる。In this embodiment as described above, even if the friction member 3 wears over time, the compression spring 6 axially pressurizes and expands the diameter, so that the contact state with the holding member 2 can be maintained.
Therefore, a stable friction force can be obtained for a long period of time,
A rotation lock with good durability can be performed.
次に本実施例の作動を説明する。Next, the operation of this embodiment will be described.
記述のように、摩擦部材３および保持部材２の間に生じ
た摩擦力によりシャフト１は、その正逆両方向の回転が
ロックされている。この状態で、第６図に示す矢印T1方
向の回転力が軸体１に作用して軸体１が同方向に回転し
た場合、カム８も軸体１と一体的に同方向に回転する。
この回転方向は第９図のようにカム７および８が相互に
離反するように移動する方向であるため、圧縮ばね６が
圧縮されて、同ばね６により摩擦部材３への加圧力が増
大する。このため摩擦部材３と保持部材２との間に作用
する摩擦力が増大して、シャフト１の回転ロック力が次
第に増大する。As described, the shaft 1 is locked in rotation in both the forward and reverse directions by the frictional force generated between the friction member 3 and the holding member 2. In this state, when the rotational force in the direction of arrow T 1 shown in FIG. 6 acts on the shaft body 1 and the shaft body 1 rotates in the same direction, the cam 8 also rotates integrally with the shaft body 1 in the same direction. .
Since this rotation direction is a direction in which the cams 7 and 8 move so as to separate from each other as shown in FIG. 9, the compression spring 6 is compressed, and the pressing force to the friction member 3 is increased by the spring 6. . Therefore, the frictional force acting between the friction member 3 and the holding member 2 increases, and the rotation lock force of the shaft 1 gradually increases.
次で、軸体１にT2方向の回転力が作用して、軸体１およ
びカム８が同方向に回転した場合、この回転方向は第８
図のように、カム7,8が相互に接近するように移動する
方向であるため、圧縮ばね６が伸長する。このため摩擦
部材３へ作用する圧縮ばね６の加圧力が減じて、摩擦部
材３と保持部材２との間の摩擦力が減少し、軸体１の回
転ロック力が次第に小さくなる。従って、上述のような
カムの作用により、軸体１はその回転方向に応じて、回
転ロック力の大きさが異なる。このような本実施例で
は、例えばロック力が小さくしても良いディスプレイ装
置の自立状態およびロック力を大きく必要とするディス
プレイ装置の伏臥状態に合わせた適用ができ、機器の特
性に応じた特性を得ることができ、操作面でのフィーリ
ングが向上する。Next, when the rotational force in the T 2 direction acts on the shaft body 1 and the shaft body 1 and the cam 8 rotate in the same direction, this rotation direction is the 8th direction.
As shown in the figure, the compression springs 6 expand because the cams 7 and 8 are in such directions that they move toward each other. Therefore, the pressing force of the compression spring 6 acting on the friction member 3 is reduced, the friction force between the friction member 3 and the holding member 2 is reduced, and the rotation lock force of the shaft body 1 is gradually reduced. Therefore, due to the action of the cam as described above, the magnitude of the rotation lock force of the shaft body 1 varies depending on the rotation direction thereof. In this embodiment, for example, it is possible to apply the display device in a self-supporting state in which the lock force may be small and the prone state in which the lock force is required to be large. It can be obtained, and the feeling of operation is improved.
第10図〜第12図は本考案の別の実施例を示し、前記実施
例と同一の要素は同一の符号を付して対応させてある。
この実施例では第１の摩擦板９、および第２の摩擦板10
により摩擦部材が構成されている。これら摩擦板9,10は
相互に重合するように保持部材２内に設けられており、
第１の摩擦板９は保持部材２に回転が拘束される一方、
第２の摩擦板10は軸体１に回転が拘束されている。ま
た、摩擦板9,及び10は軸体１の軸方向に移動可能にそれ
ぞれ保持部材2,及び軸体１に取り付けられている。この
摩擦板9,10のそれぞれの回転拘束は前記実施例における
カム7,8の回転拘束と同様に、非円形断面での嵌合で行
うことができるため、図示を省略してある。このような
実施例では軸体１と保持部材２との相対回転で、摩擦板
9,10が相対回転するため、これらの間に摩擦力が作用し
て、回転ロックを行うことができる。特に本実施例で
は、摩擦板9,10が多層構造のため、摩擦力を大きくする
ことができ、安定したロックを行うことができるメリッ
トがある。なお、カム７および８の作用は第11図および
第12図に示すように前記実施例と同様に、圧縮ばね６の
圧縮又は伸長を行うものであるため説明を省略する。10 to 12 show another embodiment of the present invention, and the same elements as those in the above embodiment are designated by the same reference numerals and correspond to each other.
In this embodiment, the first friction plate 9 and the second friction plate 10
The friction member is constituted by. These friction plates 9 and 10 are provided in the holding member 2 so as to overlap each other,
While the rotation of the first friction plate 9 is restricted by the holding member 2,
The rotation of the second friction plate 10 is restricted by the shaft body 1. The friction plates 9 and 10 are attached to the holding member 2 and the shaft body 1 so as to be movable in the axial direction of the shaft body 1, respectively. Rotational restraint of each of the friction plates 9 and 10 can be performed by fitting in a non-circular cross section similarly to the rotational restraint of the cams 7 and 8 in the above-described embodiment, and therefore is not shown. In such an embodiment, the friction plate is rotated by the relative rotation between the shaft body 1 and the holding member 2.
Since 9 and 10 rotate relative to each other, a frictional force acts between them to lock the rotation. Particularly, in this embodiment, since the friction plates 9 and 10 have a multi-layer structure, there is an advantage that the frictional force can be increased and stable locking can be performed. The operation of the cams 7 and 8 serves to compress or extend the compression spring 6 as in the above-described embodiment as shown in FIGS.
［考案の効果］ 以上のとおり本考案は、摩擦力を生じる摩擦部材をばね
力で加圧するため、摩擦部材の耐摩耗性があっても安定
した摩擦力を得ることができ、耐久性を有したものとな
ると共に、ばねの加圧力をカムによって変化させるた
め、機器の使用状況に応じた特性が得られ、操作フィー
リングが良好となる効果を奏する。[Advantage of the Invention] As described above, the present invention presses the friction member that generates the frictional force with the spring force, so that even if the friction member has wear resistance, a stable frictional force can be obtained and durability is provided. In addition, since the pressing force of the spring is changed by the cam, the characteristics according to the usage status of the device can be obtained, and the operation feeling is improved.
第１図〜第７図は本考案の一実施例の中央縦断面図、II
−II線断面図、III−III線断面図、正面図、左側面図、
右側面図、底面図、第８図および第９図はその作動を示
す断面図、第10図は別の実施例の断面図、第11図および
第12図はその作動を示す断面図、第13図〜第15図は従来
例の断面図、正面図、底面図である。 １…軸体、２…保持部材、３…摩擦部材、６…圧縮ば
ね、7,8…カム、9,10…摩擦板。1 to 7 are central longitudinal sectional views of one embodiment of the present invention, II
-II line sectional view, III-III line sectional view, front view, left side view,
Right side view, bottom view, FIGS. 8 and 9 are sectional views showing the operation thereof, FIG. 10 is a sectional view of another embodiment, and FIGS. 11 and 12 are sectional views showing the operation thereof. 13 to 15 are a sectional view, a front view and a bottom view of a conventional example. 1 ... Shaft, 2 ... Holding member, 3 ... Friction member, 6 ... Compression spring, 7,8 ... Cam, 9,10 ... Friction plate.
Claims (1)
る保持部材と、前記軸体と保持部材との間に介挿され軸
体と保持部材との相対回転で摩擦力を生じる摩擦部材
と、この摩擦部材を軸方向に加圧するばねと、前記摩擦
部材とばねとの間に位置して前記軸体及び保持部材にそ
れぞれ回転を拘束されると共に軸体の軸方向に移動可能
に取り付けられ前記軸体と保持部材との相対回転によっ
て前記ばねの加圧力を変化させる一対のカム部材とを備
えていることを特徴とする摩擦ロック装置。1. A shaft member, a holding member that holds the shaft member in a relatively rotatable manner, and a frictional force generated by relative rotation between the shaft member and the holding member, which is interposed between the shaft member and the holding member. A friction member that occurs, a spring that pressurizes the friction member in the axial direction, is positioned between the friction member and the spring, is restrained from rotating by the shaft body and the holding member, and moves in the axial direction of the shaft body. A friction lock device, comprising: a pair of cam members that are movably attached and that change the pressing force of the spring by the relative rotation of the shaft body and the holding member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP432190U JPH0747579Y2 (en) | 1990-01-23 | 1990-01-23 | Friction lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP432190U JPH0747579Y2 (en) | 1990-01-23 | 1990-01-23 | Friction lock device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0395482U JPH0395482U (en) | 1991-09-30 |
| JPH0747579Y2 true JPH0747579Y2 (en) | 1995-11-01 |
Family
ID=31508069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP432190U Expired - Fee Related JPH0747579Y2 (en) | 1990-01-23 | 1990-01-23 | Friction lock device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747579Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008223247A (en) * | 2007-03-08 | 2008-09-25 | Kanto Auto Works Ltd | Door hinge |
| US10113344B2 (en) | 2012-12-11 | 2018-10-30 | Sugatsune Kogyo Co., Ltd. | Stay |
-
1990
- 1990-01-23 JP JP432190U patent/JPH0747579Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0395482U (en) | 1991-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |