KR101650272B1 - Locking apparatus of manhole cover - Google Patents

Abstract

" 형자 캠을 장착하고 중심축 반대에 손잡이를 장착하며, 중심축 중앙 부위에 "

" 자형 꼬리 장치를 끼워 넣고, 손잡이를 수직방향으로 바로 세우면 " ㄱ" 자형 첫 번째 캠이 앞면에 닿는 동시에 "

" 자형 꼬리의 돌출 부위가 사각상자 앞 벽면 고정구멍에서 빠져나와 맨홀뚜껑 잠금장치가 열리게 되며, 손잡이를 눕히면 " ㄱ" 자형 두 번째 캠이 뒤 벽면에 닿는 동시에 "

" 자형 꼬리의 돌출 부위가 사각상자 벽면 고정구멍으로 들어가 잠기게 되는 맨홀뚜껑 잠금장치.The present invention relates to a locking device for securing a lid to a manhole installed on a road so as to penetrate the hollow of the manhole cover on both sides of the square box and to allow the center shaft to move left and right,

"It is equipped with a mold cam and mounted on the handle opposite to the center axis,

"If you insert the tail device and straighten the handle vertically, the first" A "shaped cam will touch the front and"

"The protruding part of the shape tail is pulled out from the front wall fixing hole of the square box and the manhole cover lock device is opened. When the handle is laid down, the" A "shaped second cam touches the rear wall surface,

"A manhole cover lock that locks the protruding part of the tail into the square box wall fixing hole.

" 자형 캠이 양측에 장착되고, 중심축의 중앙 부위에 "

" 자형꼬리 장치 등 5부분으로 조립한 맨홀 뚜껑 잠금장치로써 맨홀 뚜껑 손잡이를 세우고 눕히는 단순한 작동으로 맨홀 뚜껑을 개폐할 수 있도록 만든 장치로써 새로운 제조공법과 경량화 된 데에 특수성이 있는 잠금장치The manhole cover locking device of the present invention has a hollow in the central portion on both sides of the square box, a central axis which can move left and right in the hollow interior, a handle on the center shaft,

Quot; shaped cam is mounted on both sides, and "

"It is a device that can open and close the manhole cover by simple operation of laying down the manhole cover handle with the manhole cover locking device assembled in 5 parts such as the tail-shaped device, and the new manufacturing method and the locking device

Description

[0001] LOCKING APPARATUS OF MANHOLE COVER [0002]

1 is a perspective view showing a state in which a handle of a manhole cover locking device according to an embodiment of the present invention is set up.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a manhole cover locking device,

3 is a side view showing a state in which a handle of a manhole cover locking device according to an embodiment of the present invention is set up.

4 is a side view showing a state in which the handle of the manhole cover locking device according to the embodiment of the present invention is laid down.

5 is a plan view showing a state in which a handle of a manhole cover locking device according to an embodiment of the present invention is set up.

6 is a plan view showing a state in which a handle of a manhole cover locking device according to an embodiment of the present invention is laid down.

7 is a plan view of a manhole cover and a manhole cover frame provided with a manhole cover locking device according to an embodiment of the present invention.
8 is a side cross-sectional view of a manhole cover and a manhole cover with a manhole cover locking device according to an embodiment of the present invention.

DESCRIPTION OF THE RELATED ART [0002]

1: camshaft

2: Cam

3: Fixing member

4: Handle

5: the front inner side of the housing, 5-a: the rear inner side of the housing

6: Through hole

7, 7-a: housing side

8: Manhole cover

9: Housing

11: Fixing hole

The conventional manhole cover has a structure in which the weight of the manhole cover is heavily loaded on the top of the manhole, or the top end of the manhole and the manhole cover are screwed to open and close the opening. However, If there is a need to open and close the manhole cover due to the inspection and repair of the facilities in the manhole, there is a possibility that the vehicle is blocked and the traffic is inconvenienced. There is a problem that it came.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a manhole cover which is installed at the edge of a manhole cover on the road and can be easily opened and closed only by operating a handle, It is convenient to open the manhole only by lifting the handle as it is next, and to provide a manhole cover locking device in which the locking operation of the manhole cover is surely and stably performed.

" 자 형태를 가진 부재로서 캠축(1) 둘레를 감싸는 원형 고리 형태의 부분과 고리 형태의 부분으로부터 일직선으로 뻗은 막대 형태의 부분으로 구성된다.
고정부재(3)의 막대 형태의 부분의 말단부는 고정구멍(11)에 삽입된 상태로 있으며, 고정부재(3)의 고리 형태의 부분은 캠축(1)과 일체로 결합되어 있지는 않기 때문에 캠축(1)이 회전하더라도 고정부재(3)는 수평을 유지하면서 앞뒤로만 움직일 수 있다.
상기한 것과 같이 구성된 본 발명에 따른 맨홀뚜껑 잠금장치의 작용을 도면을 참고하여 설명하면 다음과 같다.
도 3에 도시된 것과 같이, 손잡이(4)가 세워진 상태에서는 캠(2)의 뾰족한 부분들 중 하나가 전방으로 뻗으면서 하우징의 전방 내측면(5)에 미는 힘을 가하는데 하우징(9)이 움직이지는 못하므로 대신 캠축(1)이 뒤로 밀려난다. 이에 따라 고정부재(3)가 후진하여 고정부재(3)의 어떤 부분도 하우징(9) 바깥으로 돌출하지 않은 상태가 됨으로써 세워진 손잡이(4)를 들어올려 맨홀뚜껑(8)을 열 수 있는 상태가 된다.
도 4에 도시된 것과 같이, 손잡이(4)가 수평하게 누운 상태에서는 캠(2)의 뾰족한 부분들 중 하나가 후방으로 뻗으면서 하우징의 후방 내측면(5-a)에 미는 힘을 가하는데 하우징(9)이 움직이지는 못하므로 대신 캠축(1)이 앞으로 밀려난다. 이에 따라 고정부재(3)가 전진하여 고정부재(3)의 일부가 하우징(9) 바깥으로 돌출한 상태가 됨으로써 도 8에 도시된 것과 같이 고정부재(3)가 맨홀뚜껑 틀의 홈에 삽입되어 맨홀뚜껑(8)이 잠금 상태로 있게 된다.Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The manhole cover locking device according to the present invention is provided at the edge of a manhole cover 8 and has a through hole 6 formed at both sides 7 and 7-a by a predetermined length in the longitudinal direction, A housing 9 in which a fixing hole 11 is formed on a front surface of the housing 9 facing the outside of the housing 9 and both end portions of the housing 9 are inserted in the through hole 6 across the through- A cam 2 which is movable in the forward and backward directions and can be rotated and which is rotatable together with the camshaft 1 in engagement with the camshaft 1 and is connected to the camshaft 1, (4) for rotating the cam (2) by raising or lowering the camshaft (1), a portion that is pierced by the camshaft (1) and rotatable around the camshaft (1) (3), and when the knob (4) is laid down, the cam (2 The camshaft 1 is advanced while being pushed while being in contact with the rear inner side surface 5-a of the housing so that the fixing member 3 passes through the fixing hole 11 to the outside of the housing 9 The camshaft 1 is pushed back while the cam 2 is in contact with the front inner surface 5 of the housing 9 when the knob 4 is set up The fixing member 3 is inserted in the inside of the housing 9 so as to be in the manhole cover releasing state.
In addition, two cams (2) are provided on the right and left sides of the fixing member (3).
As shown in FIGS. 7 and 8, the housing 9 is provided with two pieces, one at each end of the manhole cover 8 that are farthest apart from each other, among the edges of the manhole cover 8.
Each of the opposing portions of the left and right inner side surfaces of the housing 9 is formed with an elongated through hole 6 extending in the longitudinal direction and a fixing hole 11 is formed in the front surface of the housing 9. The camshaft 1 of the cylindrical shape lying horizontally across the inner space of the housing 9 in the left-right direction is slightly protruded to the outside of the housing 9 through the through- Is supported by the lower portion of the through-hole (6). As a result, the camshaft 1 can move forward and backward while keeping the longitudinal length of the through-hole 6 as the moving range.
The handle 4 is a member bent in a "C" shape and capable of gripping a horizontally extending portion by hand. Both ends of the handle 4 are integrally joined to the camshaft 1 to rotate the handle 4, ) Are also rotated together.
As shown in Figs. 3 and 4, the cam 2 is configured as a cam having a shape of "a" as shown in Fig. 5, and is coupled to the camshaft 1 and protrudes most from the camshaft 1, The cam 2 is provided with a pair of left and right pairs with the holding member 3 and the handle 4 interposed therebetween.
The fixing member 3 is "

Shaped member that surrounds the camshaft 1 and a rod-shaped portion that extends straight from the annular-shaped portion.
The end portion of the rod-shaped portion of the fixing member 3 is inserted into the fixing hole 11. Since the annular portion of the fixing member 3 is not integrally coupled with the camshaft 1, 1), the fixing member 3 can move only back and forth while maintaining the horizontal position.
The operation of the manhole cover locking apparatus according to the present invention constructed as described above will be described with reference to the drawings.
As shown in Fig. 3, when the handle 4 is raised, one of the sharp portions of the cam 2 extends forward and applies a pushing force to the front inner surface 5 of the housing, The camshaft 1 is pushed backward because it can not move. The fixing member 3 is retracted and no part of the fixing member 3 protrudes out of the housing 9 to raise the raised handle 4 to open the manhole cover 8 do.
As shown in Fig. 4, when the knob 4 is laid horizontally, one of the sharp portions of the cam 2 extends rearward to apply a pushing force to the rear inner surface 5-a of the housing, (9) does not move, the camshaft (1) is pushed forward instead. As a result, the fixing member 3 advances and a part of the fixing member 3 protrudes outside the housing 9, so that the fixing member 3 is inserted into the groove of the manhole cover as shown in FIG. 8 The manhole cover 8 is in a locked state.

The manhole cover locking device according to the present invention is such that the manhole cover locking device is locked or unlocked by the operation of the handle mounted on the manhole cover and when the handle is rotated from the standing state to the lying position in the horizontal direction, The locking state can be continuously maintained by being inserted into the groove of the lid frame, and when the lid is rotated from the lying state to the vertical position, the fixing member is moved backward so that the manhole cover can be opened. The manhole cover can be easily changed into a locked state or a loosened state without having to use or rotate the manhole cover hardly, and it is convenient to open the manhole only by lifting the handle as soon as holding the handle and holding the handle. And thus the manhole cover lock device Is superior in reliability.

Claims (2)

A through hole 6 is formed on both sides 7 and 7-a of the manhole cover 8 so as to extend for a predetermined length in the fore-and-aft direction. The through hole 6 is formed on the entire surface facing the outside of the manhole cover 8 A housing (9) having a fixing hole (11) formed therein; A camshaft (1) rotatably movable in the front and rear direction along the through hole (6) with both end portions inserted into the through hole (6) across the housing (9) in the left - right direction; A cam (2) coupled with the camshaft (1) and rotated together with the camshaft (1); A handle (4) coupled to the camshaft (1) and rotated up or down to rotate the cam (2); And And a fixing member (3) penetrating by the camshaft (1) and rotatable around the camshaft (1) and a portion projecting frontward and inserted into the fixing hole (11) When the handle 4 is laid down, the cam 2 is pushed while being in contact with the rear inner surface 5-a of the housing to advance the camshaft 1 so that the fixing member 3 is moved to the fixing hole 11 So as to protrude to the outside of the housing 9 to bring the manhole cover into a locked state, When the knob 4 is set up, the cam 2 is pushed while being in contact with the front inner surface 5 of the housing 9 to move the camshaft 1 back so that the fixing member 3 is moved to the housing 9 So as to be in a manhole cover releasing state. The method according to claim 1, Wherein the cams (2) are provided on the left and right sides with the fixing member (3) interposed therebetween.

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