JP3897892B2 - Open / close lid - Google Patents

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Publication number
JP3897892B2
JP3897892B2 JP05118998A JP5118998A JP3897892B2 JP 3897892 B2 JP3897892 B2 JP 3897892B2 JP 05118998 A JP05118998 A JP 05118998A JP 5118998 A JP5118998 A JP 5118998A JP 3897892 B2 JP3897892 B2 JP 3897892B2
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Japan
Prior art keywords
pivot
opening
lid
closing lid
operating rod
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JP05118998A
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Japanese (ja)
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JPH11269968A (en
Inventor
裕 近藤
清 鈴木
耕 山本
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株式会社ダイクレ
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Description

【0001】
【発明が属する技術分野】
本発明は、人が出入りする出入口或いは各種の原料、製品、廃棄物等を投入する投入口に設けられ、開閉が容易にできる開閉蓋に関する。
【0002】
【従来技術】
開閉蓋が設置される箇所の一例に雪国における排雪施設として道路下に配設される流雪溝や貯雪溝への投雪口がある。すなわち雪国では除雪車により除雪されて道路脇に堆積する雪、屋根から降ろされて軒下に堆積する雪、その他道路等上の積雪を除排雪するための施設として道路下に暗渠状の流雪溝や貯雪溝が設けてあり、これら排雪施設には道路脇に道路に沿い適宜の間隔を存して開閉蓋を備えた投雪口が設けられている。そして除排雪時には開閉蓋を開けて周囲より掻き集めた雪を投雪口より投入し、河川より導入した河川水や家庭から排出される温排水を利用して流すか、或いは自然溶解させて流している。
【0003】
こうした流雪溝は通常、主要道路下に設置されているが、主要道路には重量のある大型車両も通行するため蓋にはかなりな剛性が必要とされ、そのため蓋の重量が大となって開閉が困難となっている。特開平8−68101号には、蓋の開閉を容易にするために蓋の開閉に連動して昇降するバランスウェイト付アームを設けたものが開示されている。
【0004】
【発明が解決しようとする課題】
上述のバランスウェイト付アームを備えた開閉蓋では大きな力を要さず、軽快に開閉できる利点があるが、バランスウェイト付きアームや蓋の枢軸とアームの枢軸を連結する歯車伝動機構などが必要で、構造が複雑である。本発明は、構造が上述する従来のものよりも簡単で、開閉も小さな力で容易に行えるような開閉蓋を提供することを目的とする。
【0005】
【課題の解決手段】
請求項1記載の発明は、枢軸を固着するか、或いは枢軸に軸支されて開閉可能であり、人が出入りする出入口或いは各種の原料、製品、廃棄物等を投入する投入口に設けられる開閉蓋であって、上記枢軸或いは開閉蓋と一体をなして枢軸に軸承される軸受に操作ロッドを枢軸の径方向に着脱可能に連結する連結部を設けたことを特徴とする。
【0006】
本発明によると、蓋の開閉は操作ロッドを連結部に連結したのち操作ロッドを倍力機構、すなわち梃子の作用で持上げ、或いは降ろすことにより行われる。
請求項2記載の発明は、枢軸を固着するか、或いは枢軸に軸支されて開閉可能であり、人が出入りする出入口或いは各種の原料、製品、廃棄物等を投入する投入口に設けられる開閉蓋であって、上記枢軸と歯車、ベルト或いはチェーン伝動機構を介して連結され、枢軸と連動して回転する操作軸と、該操作軸に設けられ、操作ロッドを操作軸の径方向に着脱可能に連結する連結部よりなることを特徴とする。
【0007】
本発明による場合も請求項1記載の発明と同様、蓋の開閉は操作ロッドを連結部に連結したのち、操作ロッドを梃子の作用で上げ下げすることにより行われる
操作ロッドの回動量は請求項1記載の発明の開閉蓋では、該蓋と同一量となるが、請求項2記載の発明では、枢軸と操作軸にそれぞれ固着される歯車、プーリ或いはスプロケット(以下、単に歯車等という)の径を変えることにより開閉蓋の回動量を変えることができる。すなわち操作軸に固着の歯車等の径を枢軸に固着の歯車等の径より大きくすると、開閉蓋を一定角度回動するために要する操作ロッドの回動量を少なくすることができ、逆に操作軸側の歯車等の径を小さくすると、操作ロッドの回動量が多くなり、操作ロッドを比較的小さな力で操作できるようになる。
【0008】
請求項1及び2記載の発明の連結部としては、例えば枢軸或いはその軸受より径方向に突設されるピン、枢軸又は軸受或いはその両者に径方向に形成される嵌挿孔、嵌挿溝、凸部などが例示される。こうした連結部に連結される操作ロッドとしては、ピンに嵌合するパイプ、嵌挿孔、嵌挿溝に嵌挿されるロッド、凸部に嵌合する二又ロッド等が例示される。
【0009】
請求項3記載の発明は、上記請求項1又は2記載の発明において、開閉蓋に固定されて開閉蓋を常には開く方向に付勢する板バネを設けるか、或いは開閉蓋を開く方向に作用するつる巻きバネを装着することを特徴とする。本発明で用いられ板バネやつる巻バネのバネ力は開閉蓋が自重によって常に閉じた状態となる程度の大きさにする必要がある。これにより開閉蓋は常には板バネやつる巻バネのバネ力によって打勝って閉じた状態に維持されるようになり、開閉時には板バネやつる巻バネの作用で開閉蓋をより軽く開閉できるようになる。
【0010】
【発明の実施の形態】
図1は投雪口に設けられる開閉蓋を示すもので、取付枠1と、取付枠内に装着される溝蓋2よりなり、溝蓋2はベアリングバー2aとツイストバー2bよりなって、その一側端の下面に枢軸3が固着され、その突出端部が取付枠1に軸支されて上下に開閉可能に支持されている。そして溝蓋2のコーナ部4が欠落され、欠落部分の枢軸3に溝蓋2を押し上げる方向に作用するつる巻きバネ5が装着されている。このつる巻きバネ5のバネ力は溝蓋2の自重に打勝つ程大きくはなく、したがって溝蓋2は閉じた状態でも浮き上がることはない。
【001
枢軸3に固着の大径のスプロケット7と、取付枠1に軸支される小径のスプロケット8との間には無端チェーン9が掛け渡され、スプロケット8を回動すると、無端チェーン9を介してスプロケット7、枢軸3及び溝蓋2が一体となって回動するようになっており、スプロケット8と一体をなす操作軸11には連結部としてのピン12が径方向に突設されている。図中、13は取付枠1に軸支されて開閉可能なスプロケット8上を覆う蓋であり、14は溝蓋2の表面を覆うカバーである。
【001
本実施形態の開閉蓋は以上のように構成され、溝蓋2を開けるときには、蓋13を開けたのち図2に示すパイプ状の操作ロッド15をピン12に差込む。そして操作ロッド15を図2の実線位置より持上げて回動し、一点鎖線位置に倒す。操作ロッド15の反時計方向への回動により両スプロケット7、8が同方向に回動して溝蓋2を開く。
図2は操作ロッド15を実線位置より一点鎖線位置まで回動したとき、溝蓋2が実線位置まで回動する態様を示す。操作ロッド15の回動量は溝蓋2の回動量より多いが、これはスプロケット8の径がスプロケット7の径より小さいためである。スプロケット8の径を逆にスプロケット7の径より大きくすると、溝蓋2の回動量より少なくなる。
【001
操作ロッド15の回動量を溝蓋2より多くした前者の場合、操作ロッド15の回動操作が軽快に行える反面、溝蓋2を開くのに要する回動量が多くなる。一方、操作ロッド15の回動量を溝蓋2より少なくした後者の場合、操作ロッド15の回動量は少なくなるが、回動操作は重くなる。本実施形態による場合、溝蓋2を開くのに要する操作ロッド15を操作するための力F1 は、図3及び図4に示すようにスプロケット7及び8の径をそれぞれr1 及びr2 とし、溝蓋2の枢軸からの巾(長さ)をL、操作ロッド15の長さをl1 、溝蓋の自重をW、チェーンの引張力をPとすると、
Pr1 =1/2・W・
Pr2 =F1 1
より
【001
【数1】

Figure 0003897892
となり、r1 >r2 1 とすると、F1 <Wとなり、小さな力F1 で溝蓋2の開閉が行えるようになる。
【001
上記実施形態では、枢軸とは別に操作軸を設けて、該操作軸にピンを突設しているが、別の実施形態では枢軸にピンが突設され、ピンに操作ロッドを差込むことにより枢軸が直接回動操作される。この場合、操作ロッドの回動量と溝蓋の回動量が一致する。そして開閉蓋を開くのに要する操作ロッド15を操作するための力F1 は、図4に示すように、溝蓋2の枢軸からの巾(長さ)をL、操作ロッド15の長さをl2 、溝蓋の自重をWとすると、
【001
【数2】
Figure 0003897892
となる。
【001
【発明の効果】
請求項1記載の発明によると、操作ロッドを枢軸又は軸受の連結部に連結して上げ下げすることにより梃子の作用で溝蓋を軽く開閉することができる。
請求項2記載の発明によると、操作ロッドを操作軸の連結部に連結して上げ下げすることにより梃子の作用で溝蓋を軽く開閉することが可能であり、また枢軸又は軸受に固着の歯車等と操作軸に固着の歯車等の径を変えることにより、溝蓋を開くための操作ロッドの回動量を変えられ、操作ロッドの回動量を多くすることにより操作ロッドの操作をより軽快に行うことができる。また更に操作軸は操作し易い位置に設けることが可能であり、任意の位置に設けることが可能であることから設計上の自由度も増す。
【001
請求項3記載の発明によると、溝蓋をより軽い力で開くことができる。
【図面の簡単な説明】
【図1】本発明に係わる開閉蓋の平面図
【図2】開閉蓋を開閉するときの態様を示す図
【図3】作用説明図
【図4】別の実施形態の作用説明図
【符号の説明】
1、21・・取付枠
2、23・・溝蓋
3・・枢軸
4・・コーナ部
5・・つる巻バネ
7、8・・スプロケット
9・・無端チェーン
11・・操作軸
12・・ピン
13・・蓋
14・・カバー
15・・操作ロッド[0001]
[Technical field to which the invention belongs]
The present invention relates to an opening / closing lid that is provided at an entrance / exit where a person goes in / out or an entrance through which various raw materials, products, wastes, and the like are introduced and can be easily opened / closed.
[0002]
[Prior art]
An example of the location where the opening / closing lid is installed is a snow outlet to a snow flow ditch or a snow storage ditch installed under the road as a snow drainage facility in a snowy country. In other words, in snowy countries, snow that has been removed by a snowplow and accumulated on the side of the road, snow that has fallen from the roof and accumulated under the eaves, and other snow on the road, etc. Grooves and snow storage grooves are provided, and these snow drainage facilities are provided with snow outlets with open / close lids at appropriate intervals along the road. Then, when removing snow, open the open / close lid and throw snow collected from the surrounding area through the snow outlet and use the river water introduced from the river and the warm drainage discharged from the home or let it melt and dissolve naturally. ing.
[0003]
These snow drift grooves are usually installed under main roads, but heavy vehicles are also used on the main roads, so the lids need to be quite rigid, which increases the weight of the lids. Opening and closing is difficult. Japanese Patent Application Laid-Open No. 8-68101 discloses a device provided with an arm with a balance weight that moves up and down in conjunction with opening and closing of the lid in order to facilitate opening and closing of the lid.
[0004]
[Problems to be solved by the invention]
The above-mentioned opening / closing lid with an arm with a balance weight has the advantage that it can be opened and closed easily without requiring a large force, but it requires an arm with a balance weight or a gear transmission mechanism that connects the pivot axis of the lid and the pivot axis of the arm. The structure is complicated. An object of the present invention is to provide an opening / closing lid that has a simpler structure than the above-described conventional one and can be easily opened and closed with a small force.
[0005]
[Means for solving problems]
According to the first aspect of the present invention, the pivot is fixed, or is pivotally supported by the pivot and can be opened and closed, and the opening / closing provided at an entrance where a person enters and exits or an inlet where various raw materials, products, wastes, and the like are input. a lid, said pivot, or characterized in that the operating rod to a bearing which is journaled in the pivot forms a lid and integrally provided with a coupling part for detachably connecting the radial direction of the pivot.
[0006]
According to the present invention, the lid is opened and closed by connecting the operating rod to the connecting portion and then lifting or lowering the operating rod by the action of a booster mechanism, that is, a lever.
The invention according to claim 2 can be opened and closed by fixing the pivot or pivotally supported by the pivot, and is provided at an entrance through which a person enters and exits or an entrance through which various raw materials, products, waste, etc. are introduced. A lid, which is connected to the pivot through the gear , belt or chain transmission mechanism, and is provided with an operation shaft that rotates in conjunction with the pivot. The operation rod is detachable in the radial direction of the operation shaft. It is characterized by comprising a connecting portion that connects to the.
[0007]
In the case of the present invention as well, as in the first aspect of the invention, the lid is opened and closed by connecting the operating rod to the connecting portion and then raising and lowering the operating rod by the action of the lever .
The rotation amount of the operating rod is the same as that of the opening / closing lid of the invention described in claim 1, but in the invention of claim 2, the gear, pulley or sprocket (hereinafter referred to as the pivot shaft and the operating shaft) are fixed. The amount of rotation of the opening / closing lid can be changed by changing the diameter of the gears. I.e. larger than the diameter of the gear or the like fixing the diameter of the gear or the like fixed to the operating shaft to pivot, the lid can be reduced amount of rotation of the operating rod required for a predetermined angle rotation, the operating shaft in the opposite If the diameter of the side gear or the like is reduced, the amount of rotation of the operating rod increases, and the operating rod can be operated with a relatively small force.
[0008]
As the connecting portion of the inventions according to claims 1 and 2, for example, a pin projecting radially from the pivot or its bearing, a fitting insertion hole, a fitting groove formed radially on the pivot or bearing or both, A convex part etc. are illustrated. Examples of the operating rod connected to such a connecting portion include a pipe that fits into a pin, a fitting insertion hole, a rod that is fitted into a fitting groove, and a bifurcated rod that fits into a convex portion.
[0009]
According to a third aspect of the present invention, in the first or second aspect of the present invention, a leaf spring is provided which is fixed to the opening / closing lid and urges the opening / closing lid to always open, or acts in the direction of opening the opening / closing lid. A helical spring is attached. The spring force of the leaf spring and the helical spring used in the present invention needs to be large enough to keep the open / close lid closed by its own weight. As a result, the opening / closing lid is always kept closed by overcoming the spring force of the leaf spring and the helical spring so that the opening and closing lid can be opened and closed more lightly by the action of the leaf spring and the helical spring. become.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an opening / closing lid provided at a snow outlet, which comprises an attachment frame 1 and a groove lid 2 mounted in the attachment frame. The groove lid 2 comprises a bearing bar 2a and a twist bar 2b. The pivot 3 is fixed to the lower surface of one side end, and the projecting end of the pivot 3 is supported by the mounting frame 1 so as to be opened and closed up and down. Then, the corner portion 4 of the groove lid 2 is omitted, and a helical spring 5 acting in the direction of pushing up the groove lid 2 is attached to the pivot 3 of the missing portion. The spring force of the helical spring 5 is not so great as to overcome the weight of the groove lid 2, and therefore the groove lid 2 does not float even when it is closed.
[001 1 ]
An endless chain 9 is spanned between a large-diameter sprocket 7 fixed to the pivot 3 and a small-diameter sprocket 8 pivotally supported by the mounting frame 1. When the sprocket 8 is rotated, The sprocket 7, the pivot 3 and the groove lid 2 rotate together, and a pin 12 as a connecting portion projects in the radial direction on the operation shaft 11 integrated with the sprocket 8. In the figure, 13 is a cover that covers the sprocket 8 that is pivotally supported by the mounting frame 1 and can be opened and closed, and 14 is a cover that covers the surface of the groove cover 2.
[001 2 ]
The opening / closing lid of the present embodiment is configured as described above, and when opening the groove lid 2, after opening the lid 13, the pipe-shaped operating rod 15 shown in FIG. 2 is inserted into the pin 12. Then, the operating rod 15 is lifted from the position indicated by the solid line in FIG. 2 and rotated to fall to the one-dot chain line position. By rotating the operating rod 15 counterclockwise, the sprockets 7 and 8 are rotated in the same direction to open the groove lid 2.
FIG. 2 shows a mode in which the groove lid 2 rotates to the solid line position when the operating rod 15 is rotated from the solid line position to the one-dot chain line position. The rotation amount of the operation rod 15 is larger than the rotation amount of the groove cover 2 because the diameter of the sprocket 8 is smaller than the diameter of the sprocket 7. Conversely, if the diameter of the sprocket 8 is larger than the diameter of the sprocket 7, the amount of rotation of the groove lid 2 is reduced.
[001 3 ]
In the former case where the rotation amount of the operation rod 15 is larger than that of the groove lid 2, the rotation operation of the operation rod 15 can be easily performed, but the rotation amount required to open the groove lid 2 is increased. On the other hand, in the latter case where the amount of rotation of the operating rod 15 is less than that of the groove lid 2, the amount of rotation of the operating rod 15 decreases, but the rotation operation becomes heavy. In the case of this embodiment, the force F 1 for operating the operating rod 15 required to open the groove lid 2 is such that the diameters of the sprockets 7 and 8 are r 1 and r 2 as shown in FIGS. When the width (length) of the groove lid 2 from the pivot axis is L, the length of the operation rod 15 is l 1 , the weight of the groove lid is W, and the tensile force of the chain is P,
Pr 1 = 1/2 · W · L
Pr 2 = F 1 · l 1
[001 4 ]
[Expression 1]
Figure 0003897892
If r 1 > r 2 and l 1 > L , then F 1 <W, and the groove lid 2 can be opened and closed with a small force F 1 .
[001 5 ]
In the above embodiment, an operating shaft is provided separately from the pivot, and a pin protrudes from the operating shaft. However, in another embodiment, a pin protrudes from the pivot and an operation rod is inserted into the pin. The pivot is directly rotated. In this case, the rotation amount of the operation rod and the rotation amount of the groove lid coincide. As shown in FIG. 4, the force F 1 for operating the operating rod 15 required to open the opening / closing lid is set such that the width (length) from the pivot of the groove lid 2 is L, and the length of the operating rod 15 is l 2 , where the weight of the groove lid is W,
[001 6 ]
[Expression 2]
Figure 0003897892
It becomes.
[001 7 ]
【The invention's effect】
According to the first aspect of the present invention, the groove lid can be lightly opened and closed by the action of the lever by connecting the operating rod to the pivot or the connecting portion of the bearing and raising and lowering it.
According to the second aspect of the present invention, it is possible to lightly open and close the groove lid by the action of the lever by connecting the operating rod to the connecting portion of the operating shaft and raising and lowering it, and the gear fixed to the pivot shaft or the bearing, etc. By changing the diameter of the gear fixed to the operating shaft, the amount of rotation of the operating rod for opening the groove cover can be changed, and by increasing the amount of rotation of the operating rod, the operation rod can be operated more easily. Can do. Furthermore, the operating shaft can be provided at a position where it can be easily operated, and can be provided at an arbitrary position, which increases the degree of freedom in design.
[001 8 ]
According to the invention of claim 3, the groove lid can be opened with a lighter force.
[Brief description of the drawings]
FIG. 1 is a plan view of an opening / closing lid according to the present invention. FIG. 2 is a view showing an aspect when opening / closing the opening / closing lid. FIG. 3 is an operation explanatory diagram. FIG. 4 is an operation explanatory diagram of another embodiment. Explanation】
1, 2, ··· Mounting frame 2, 23 ·· Groove lid 3 · Pivot 4 · Corner portion 5 · Helical springs 7 and 8 · · Sprocket 9 · · Endless chain 11 · · Operation shaft 12 · · Pin 13 ..Lid 14

Claims (3)

枢軸を固着するか、或いは枢軸に軸支されて開閉可能であり、人が出入りする出入口或いは各種の原料、製品、廃棄物等を投入する投入口に設けられる開閉蓋であって、上記枢軸或いは開閉蓋と一体をなして枢軸に軸承される軸受に操作ロッドを枢軸の径方向に着脱可能に連結する連結部を設けたことを特徴とする開閉蓋。Or securing the pivot, or may be opened and closed is supported by a pivot, doorway or various raw materials and out people, products, a lid provided in inlet for introducing waste and the like, the pivot, Alternatively, an opening / closing lid characterized in that a connecting portion is provided integrally with the opening / closing lid so as to connect the operating rod in a detachable manner in the radial direction of the pivot shaft. 枢軸を固着するか、或いは枢軸に軸支されて開閉可能であり、人が出入りする出入口或いは各種の原料、製品、廃棄物等を投入する投入口に設けられる開閉蓋であって、上記枢軸と歯車、ベルト或いはチェーン伝動機構を介して連結され、枢軸と連動して回転する操作軸と、該操作軸に設けられ、操作ロッドを操作軸の径方向に着脱可能に連結する連結部よりなることを特徴とする開閉蓋。Or securing the pivot, or may be opened and closed is supported by a pivot, doorway or various raw materials and out people, products, a lid provided in inlet for introducing waste and the like, and the pivot gears, are coupled via a belt or chain transmission mechanism, an operating shaft which rotates in conjunction with the pivot provided on said operating shaft, to become the connecting portion for detachably connecting the operating rod in the radial direction of the operation axis Opening and closing lid characterized by. 開閉蓋を開く方向に作用する板バネを設けるか或いは枢軸に開閉蓋を開く方向に作用するつる巻バネを設ける請求項1又は2記載の開閉蓋。The opening / closing lid according to claim 1 or 2, wherein a leaf spring acting in a direction to open the opening / closing lid is provided or a helical spring acting in a direction to open the opening / closing lid is provided on the pivot .
JP05118998A 1998-01-22 1998-03-04 Open / close lid Expired - Fee Related JP3897892B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05118998A JP3897892B2 (en) 1998-01-22 1998-03-04 Open / close lid

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1069598 1998-01-22
JP10-10695 1998-01-22
JP05118998A JP3897892B2 (en) 1998-01-22 1998-03-04 Open / close lid

Publications (2)

Publication Number Publication Date
JPH11269968A JPH11269968A (en) 1999-10-05
JP3897892B2 true JP3897892B2 (en) 2007-03-28

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016035162A (en) * 2014-08-01 2016-03-17 東北岡島工業株式会社 Opening/closing lid
KR102095129B1 (en) * 2018-10-17 2020-03-30 이방열 A manhole cover device for drainage hole

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