JPH0749063Y2 - Counter balance device - Google Patents
Counter balance deviceInfo
- Publication number
- JPH0749063Y2 JPH0749063Y2 JP1987178844U JP17884487U JPH0749063Y2 JP H0749063 Y2 JPH0749063 Y2 JP H0749063Y2 JP 1987178844 U JP1987178844 U JP 1987178844U JP 17884487 U JP17884487 U JP 17884487U JP H0749063 Y2 JPH0749063 Y2 JP H0749063Y2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- spring
- moving member
- shaft
- spring shaft
- 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
- Accessory Devices And Overall Control Thereof (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
- Closures For Containers (AREA)
- Pivots And Pivotal Connections (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は開閉自在なカバーなどに用いられるカウンタ
バランス装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a counterbalance device used for an openable / closable cover or the like.
従来複写機や自動原稿送り装置などのキャビネットに
は、内部の点検や整備などを容易とするため開閉自在な
カバーが設けられている。Conventionally, a cabinet such as a copying machine or an automatic document feeder is provided with an openable / closable cover for facilitating internal inspection and maintenance.
また上下方向へ開閉するカバーなどには、開閉が小さな
力で容易に行えるようにカウンタバランス装置を設けた
ものがある。In addition, some covers and the like that open and close in the vertical direction are provided with a counter balance device so that the cover can be easily opened and closed with a small force.
上記従来のカウンタバランス装置は、カバーの荷重に見
合った付勢手段やカウンタバランサを設けてカバーと釣
合わせることにより、小さな操作力でカバーが容易に開
閉できるようにしたものが採用されている。例えば特開
昭54-27507号公報など。The above-mentioned conventional counter balance device employs a device that allows the cover to be easily opened and closed with a small operating force by providing a biasing means and a counter balancer corresponding to the load of the cover and balancing the cover with the cover. For example, JP-A-54-27507.
しかし従来のカウンタバランス装置では荷重が大きくな
ると、これに伴い支持部の構成部品に高荷重が作用する
構成のため、構成部品に高い強度を必要として装置自体
が大型になると共に、高トルクにより回転部が早期に摩
耗するなどの不具合があった。However, in the conventional counter balance device, when the load becomes large, a high load acts on the components of the supporting part, so that the components themselves need to have high strength and the device itself becomes large, and the components are rotated by high torque. There was a problem such as early wear of parts.
この考案は上記目的を達成するために、一端側が本体に
枢着され、かつ他端側がこの枢着部を支点にほぼ水平位
置より上方へ開閉自在なカバーと、上記枢着部より下方
の本体側にほぼ水平に設けられた第２スプリング軸と、
上記第２スプリング軸の軸方向に移動自在に設けられた
移動部材と、この移動部材を上記カバーの枢着部より離
間する方向へ付勢する第２スプリングと、上記カバーの
他端側と移動部材の間に両端が枢着され、かつ第１スプ
リングにより伸長方向へ付勢された伸縮自在な第１スプ
リング軸とを設けたもので、カバーの開閉とともに移動
部材をカバーの枢着点と離間する方向へ移動させて第１
スプリングの反力方向と徐々に変化させることにより、
カバーの荷重よりより小さいスプリング力でカバーの荷
重のバランスさせるようにしたカウンタバランス装置を
提供しようとするものである。In order to achieve the above-mentioned object, the present invention has a cover pivotally attached to the main body at one end side and the other end side being openable and closable upward from a substantially horizontal position with the pivotal portion as a fulcrum, and the main body below the pivotal portion. A second spring shaft provided substantially horizontally on the side,
A moving member that is provided so as to be movable in the axial direction of the second spring shaft, a second spring that urges the moving member in a direction away from the pivotal attachment portion of the cover, and moves with the other end side of the cover. Both ends are pivotally attached between the members, and a first spring shaft that is elastic and urged in the extension direction by the first spring is provided. When the cover is opened and closed, the moving member is separated from the pivot point of the cover. Move in the direction of
By gradually changing the reaction force direction of the spring,
An object of the present invention is to provide a counter balance device that balances the load of the cover with a spring force smaller than the load of the cover.
この考案の一実施例を図面を参照して詳述すると、図に
おいて１は複写機等の本体、２はカバーで、該カバー２
より突設されたブラケット３がピン４により上記本体１
に枢着されて、このピン４を中心に上下方向へ開閉自在
となっている。An embodiment of the present invention will be described in detail with reference to the drawings. In the drawing, 1 is a body of a copying machine or the like, 2 is a cover, and 2 is a cover.
The more protruding bracket 3 is attached to the main body 1 by the pin 4
The pin 4 is pivotally attached to the pin 4 and can be opened and closed vertically around the pin 4.
また上記カバー２の下方には両端部が本体１に水平に固
定された第２スプリング軸５が設けられていて、この第
２スプリング軸５に移動部材６が摺動自在に支承されて
いる。A second spring shaft 5 whose both ends are horizontally fixed to the main body 1 is provided below the cover 2, and a moving member 6 is slidably supported on the second spring shaft 5.
上記移動部材６と、第２スプリング軸５に固着されたば
ね座７の間には移動部材６をカバー２を枢支するピン４
と反対の方向へ付勢する第２スプリング８が介在されて
いると共に、移動部材６を挾んで上記第２スプリング８
と対向する位置には、移動部材６の移動量を規制するス
トッパ９が設けられている。A pin 4 for pivotally supporting the cover 2 with the moving member 6 is provided between the moving member 6 and the spring seat 7 fixed to the second spring shaft 5.
A second spring 8 for urging in the opposite direction is interposed, and the moving member 6 is sandwiched between the second spring 8 and
A stopper 9 that restricts the movement amount of the moving member 6 is provided at a position opposite to the position.
一方10は上記第２スプリング軸５の上方にこれと平行す
るように設けられた第１スプリンク軸で、一端がピン11
により上記移動部材６に枢着された中軸10aと、この中
軸10aの他端側に摺動自在に嵌挿された外軸10bとよりな
り、外軸10bの端部はカバー２の内側面に固着されたブ
ラケット12にピン13により枢着されている。On the other hand, reference numeral 10 is a first sprinkling shaft provided above the second spring shaft 5 so as to be in parallel therewith, and one end thereof has a pin 11
Is composed of an inner shaft 10a pivotally attached to the moving member 6 and an outer shaft 10b slidably fitted into the other end of the inner shaft 10a. The outer shaft 10b has an end portion on the inner surface of the cover 2. It is pivotally attached to the fixed bracket 12 by a pin 13.
また上記第１スプリング軸10の外周部には第１スプリン
グ14の収容されたばね筒15が嵌挿されている。Further, a spring cylinder 15 accommodating a first spring 14 is fitted and inserted on the outer peripheral portion of the first spring shaft 10.
上記ばね筒15の一端は移動部材６側に設けられたガイド
軸10aの段部10cに係止されていると共に、ばね筒15の他
端は開放されていて、この開放部より突出した第１スプ
リング14の端部は、ガイド筒10bの端部に形成されたば
ね座10dに係止されている。One end of the spring cylinder 15 is locked to the stepped portion 10c of the guide shaft 10a provided on the moving member 6 side, and the other end of the spring cylinder 15 is open, and the first end protruding from this open portion. The end of the spring 14 is locked to a spring seat 10d formed at the end of the guide cylinder 10b.
次に上記構成されたカウンタバランス装置の作用を説明
すると、図で示すカバー２の閉鎖状態から、カバー２を
ピン４を中心に上方へ開放すると、カバー２の開放とと
もに第１スプリング軸10がピン11を中心に上方へ回動
し、カバー２と第１スプリング軸10の回動中心の相違か
ら第１スプリング軸10が伸長して第１スプリング14が伸
びはじめる。Next, the operation of the counter balance device configured as described above will be described. When the cover 2 is opened upward about the pin 4 from the closed state of the cover 2 shown in the drawing, the cover 2 is opened and the first spring shaft 10 is pinned. When the cover 2 and the first spring shaft 10 rotate about 11 as a center, the first spring shaft 10 extends and the first spring 14 begins to expand due to the difference in the rotation centers of the cover 2 and the first spring shaft 10.
同時に第２スプリング８に作用している力が減少するた
め、第２スプリング８はばね力で移動部材６がストッパ
９方向へ移動を開始し、これによって第１スプリング軸
10の回動角θ′はカバー２の開放角θより大きなるた
め、重力モーメントに対する反力はより直角方向に近く
なり、カバー２の荷重に対してより小さなばね荷重でカ
バー２の荷重と釣合うようになる。At the same time, the force acting on the second spring 8 is reduced, so that the moving force of the second spring 8 causes the moving member 6 to start moving toward the stopper 9, thereby causing the first spring shaft to move.
Since the rotation angle θ ′ of 10 is larger than the opening angle θ of the cover 2, the reaction force against the gravity moment becomes closer to the right angle direction, and the load of the cover 2 and the fishing force of the cover 2 are smaller than the load of the cover 2 with a smaller spring load. It fits.
従ってカバー２が小さな力で開閉できるようになる。Therefore, the cover 2 can be opened and closed with a small force.
この考案は以上詳述したように、カバーの開放とともに
カバーの荷重とバランスさせる第１スプリングの一端側
支持点を移動させて反力方向を徐々に変化させるように
したことから、カバーの荷重に対してより小さなばね荷
重の第１スプリングでカバーの荷重と釣合せることがで
き、これによって支持部に加わる負荷を軽減することが
できることから支持部の機構の簡素化及び小型化が図れ
るようになる。As described in detail above, this invention is configured to move the support point on one end side of the first spring that balances the load of the cover with opening of the cover to gradually change the reaction force direction. On the other hand, the load of the cover can be balanced by the first spring having a smaller spring load, and the load applied to the support can be reduced. Therefore, the mechanism of the support can be simplified and downsized. .
また支持部に高トルクが作用することもなくなることか
ら回転支持部が早期に磨耗するなどの不具合も解消する
ことができるようになる。しかもカバーの下方へコンパ
クトに格納できるため、外観が良好であると共に、カバ
ーを開閉する際誤ってカバーとスプリングの間に指が挟
まれて怪我をするなどの心配がないため、自動原稿送り
装置などに採用しても安全である。Further, since the high torque does not act on the supporting portion, it is possible to solve the problem that the rotating supporting portion is worn early. In addition, it can be stored compactly under the cover, so it has a good appearance, and when opening or closing the cover, you do not have to worry about accidentally getting your fingers caught between the cover and the spring, resulting in injury. It is safe to use for such purposes.
図面はこの考案の一実施例を示す断面図である。 １は本体、２はカバー、５は第２スプリング軸、６は移
動部材、８は第２スプリング、10は第１スプリング軸、
14は第１スプリング。The drawing is a sectional view showing an embodiment of the present invention. 1 is a main body, 2 is a cover, 5 is a second spring shaft, 6 is a moving member, 8 is a second spring, 10 is a first spring shaft,
14 is the first spring.
Claims (1)
この枢着部を支点にほぼ水平位置より上方へ開閉自在な
カバー２と、上記枢着部より下方の本体１側にほぼ水平
に設けられた第２スプリング軸５と、上記第２スプリン
グ軸５の軸方向に移動自在に設けられた移動部材６と、
この移動部材６を上記カバー２の枢着部より離間する方
向へ付勢する第２スプリング８と、上記カバー２の他端
側と移動部材６の間に両端が枢着され、かつ第１スプリ
ング14により伸長方向へ付勢された伸縮自在な第１スプ
リング軸10とを具備してなるカウンタバランス装置。1. A cover 2 having one end pivotally attached to a main body 1 and the other end openable and closable upwardly from a substantially horizontal position with the pivotal portion as a fulcrum, and to the main body 1 side below the pivotal attachment portion. A second spring shaft 5 provided horizontally, a moving member 6 provided so as to be movable in the axial direction of the second spring shaft 5,
A second spring 8 for urging the moving member 6 in a direction away from the pivotal portion of the cover 2, and both ends pivotally attached between the other end side of the cover 2 and the moving member 6 and the first spring. A counterbalance device comprising a first spring shaft 10 which is elastically urged by 14 in an extension direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987178844U JPH0749063Y2 (en) | 1987-11-26 | 1987-11-26 | Counter balance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987178844U JPH0749063Y2 (en) | 1987-11-26 | 1987-11-26 | Counter balance device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0183947U JPH0183947U (en) | 1989-06-05 |
| JPH0749063Y2 true JPH0749063Y2 (en) | 1995-11-13 |
Family
ID=31470441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987178844U Expired - Lifetime JPH0749063Y2 (en) | 1987-11-26 | 1987-11-26 | Counter balance device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749063Y2 (en) |
-
1987
- 1987-11-26 JP JP1987178844U patent/JPH0749063Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0183947U (en) | 1989-06-05 |
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