KR20070108603A - Automatic manhole cover - Google Patents

Abstract

A manhole cover having a bi-directional auto opening and closing unit is provided to block the gas or stench, and to prevent the water from being flowed backward by mounting an automatic opening and closing device operated by self weight. A housing is mounted with an automatic opening and closing device and installed on a lower end of a manhole cover(1) of drainage such as a sewer. The automatic opening and closing device is laid on a support protrusion of a manhole frame(10) embedded in a road surface. The manhole frame is formed with resistant parts(12) to two edges of the manhole frame to be fixed on the road surface.

Description

Manhole cover with two-way automatic opening and closing means {Automatic manhole cover}

1 is a perspective view of a state in which the automatic switch is mounted on the manhole cover of the present invention.

Figure 2 is a perspective view of the manhole frame for fixing the manhole cover.

3 is a perspective view of a manhole cover;

Figure 4 is a perspective view of the housing of the automatic switchgear body.

Figure 5 is a perspective view showing the assembled state of the automatic switchgear of the housing.

6 is a perspective view of the automatic switch open state.

7 is a plan view of a state additionally mounted on the automatic switch.

8 is a cross-sectional view of the manhole cover is coupled to the housing.

9 is a schematic diagram of an operating state of an automatic switchgear.

10 is an enlarged view showing an assembled state of a switch in a housing;

Figure 11 is a perspective view of the assembly frame for the assembly of the switchgear in the housing.

12 is a perspective view of an automatic switchgear.

Figure 13 is a cross-sectional view of the overlapping state of the switch

〈Description of the symbols for the main parts of the drawings〉

1: Manhole Cover

10: manhole frame 11: base

12: internal

20: housing 21: pinched groove

22: tilting wing 22: shaft hole

23: pinch groove 24: opening

25: assembly groove 26: flow prevention groove

27: pedestal

30: assembly frame 31: support shaft groove

32: assembly protrusion 33: flow preventing protrusion

40: switch 41: shaft

42: pinch axis 43: weight

44: wing 45: nesting portion

46: switch folding induction projection

The present invention relates to a manhole cover used in the manhole of the drain, such as sewers, in particular to install the automatic switch operated by the weight of the manhole by the flow of sewage at the bottom of the manhole cover to always keep the closed state of the manhole It prevents the introduction of dirt into the inside, and at the same time blocks the gas or odor emitted from the sewers, and prevents backwater from flowing back from the sewers during heavy rains and discharges only by the water's own load when draining.

In the related art, the manhole cover of a drain, such as a sewer, was merely a concept to prevent the pedestrian or the vehicle from falling out, or to prevent the introduction of large foreign matter.

Therefore, such a manhole cover is usually installed in an area where a lot of water is generated is to use the type as shown in Figure 3 for ease of drainage.

Therefore, many of these forms of play have the disadvantage that various odors generated in the sewers are easily discharged to the ground, and of course, they deteriorate the appearance of various foreign matters.

In addition, when a large amount of rain falls at a time, there is a problem that the water of the sewer is discharged to the road due to the backflow phenomenon.

Therefore, the present invention is intended to solve this problem by installing an automatic switch that is normally closed at the bottom of the manhole cover and automatically opens by the weight of water when rainwater is generated, and also to fix the housing for mounting the switch. In order to fix the frame firmly in the drawings and the cover to be covered in the housing means for facilitating the flow of rain water is devised so that the opening and closing means are made in both directions.

Hereinafter will be described in detail based on the accompanying drawings.

First, the present invention is to install a housing 20 equipped with an automatic switch 40 on the lower end of the manhole cover 1 of the drainage channel such as a sewer.

At this time, the housing 20 is to be placed on the support jaw 11 of the manhole frame 10 is embedded in the furnace surface, the manhole frame 10 is both sides of the manhole frame 10 so as to be firmly fixed to the furnace surface In order to form the internal portion 12.

The inner part 12 is to be formed in a T-shape to be buried in the asphalt while being able to be firmly fixed.

In addition, the housing 20 placed on the support jaw 11 of the manhole frame 10 has an inner space 28 through which the automatic switch 40 can be folded and has a switch in a diagonal direction on both side walls thereof. The shaft hole 22 and the shaft pinion groove 23 are formed so that the shaft 41 and the pinion shaft 42 of the 40 can be rotatably coupled, and the shaft pinion groove 23 is formed by the opening 24. The switch 40 is rotatably coupled to the opening 24 by being assembled by the assembly frame 30 having the support shaft groove 31 in the opened state.

In addition, the supporting jaw of the manhole frame is to be placed on the support protrusions 27 formed at the lower end of the inclined wing portion 22 protruding out of the housing, the inclined wing portion 22 is formed to be inclined upward At a predetermined interval of the inclined wing portion 22 is the insertion groove 21 is formed to be covered while being fitted with the manhole cover 1 in the insertion groove 21, the inclination angle of the inclined wing portion 22 in that state By having a constant slope to both sides of the manhole is easy to enter dirt.

In addition, the assembly frame 30 is assembled to the opening 24 of the housing 20 is to facilitate the exchange of the switch 40, this assembly is to be assembled in the assembly groove 25 of the opening 24 In order to prevent the flow in the assembled state, the assembling protrusion 32 is formed, the outer wall of the opening 24 is formed with a flow preventing groove 26 and the assembly frame to be engaged with the flow preventing groove 26 ( 30 is a flow preventing protrusion 33 is formed on the outer wall.

In addition, the switch 40 to be assembled by the assembly frame has a blade 44 is formed in a predetermined width, the shaft 41 is protruded on one side of the blade 44 and the pinned shaft 42 on the other side A weight 43 is formed at the front end of the blade 44, and a curved overlapping portion 45 is formed in front of the wing 44.

This curved overlapping portion 45 is located at the lower end formed in a straight line of the shaft 41 and the pinion shaft 42, as shown in Figs. 9 and 13 will induce close contact.

In addition, at both sides of the wing 44 to form a fine small protrusion 46, the switch 40 is in close contact with the inner wall of the inner space 28 in a state formed in the inner space 28 of the housing 20. By inducing to minimize the friction by having the ease of flow.

Therefore, the switch 40 is formed by the openings 24 formed in the diagonal direction of both walls of the housing 20 so that the position of the weight 43 is formed to correspond to each other on both sides as shown in FIG. It is to facilitate the drainage by removing the interference in a continuous state of the operation and by the operation of the switchgear 40 at the same time irrespective of the direction of the flow of water.

Therefore, when rainwater is introduced for drainage, the mandrel cover 1 coupled by the inclined wing portion 22 of the housing 20 is fitted in the fitting groove 21 of the inclined wing portion 22. The water is easily entered by the inclination angle of 22), and the water is released by the weight of the switch in the inner space of the housing while the housing is seated by the supporting protrusions 27 on the support jaw of the manhole frame. It will be opened only when there is, and will normally solve the conventional problem by maintaining the closed state.

As described above, to prevent the occurrence of odors in the sewer and at the same time to prevent the introduction of dirt to provide a clean manhole, at the same time, the low cost for maintenance by the partial replacement of the damage to the automatic switchgear and at the same time a lot of rain water Even if it is generated, it is to be opened in both directions to facilitate the drainage and at the same time to prevent backflow.

Claims (7)

In installing a housing equipped with an automatic switchgear at a lower end of a manhole cover of a drain, such as a sewer, the automatic switchgear mounted to the housing is placed on a support jaw of a manhole frame embedded in the road surface, and the manhole frame is mounted on the furnace surface. Manhole cover having a two-way automatic opening and closing means characterized in that the inner side is formed on both sides of the manhole frame to enable a firm fixing. In a housing equipped with an automatic switchgear seated on a manhole frame in a drain, such as a sewer, is installed at the bottom of the manhole cover, the housing has an inner space that is penetrated so that the automatic switchgear can be folded. The shaft hole and the shaft pinch groove is formed so that the shaft and the pinch shaft of the switchgear can be rotatably coupled in the diagonal direction, and the shaft pinch groove is assembled with the opening by the assembly frame having the support shaft groove in the state of being opened by the opening. Manhole cover having a two-way automatic opening and closing means characterized in that the switch is rotatably coupled. According to claim 1 or 2, wherein the support jaw of the manhole frame is placed on the support protrusions formed on the lower end of the inclined wings protruding out of the housing, the inclined wings are formed to be inclined upwardly and the predetermined interval of the inclined wings The manhole cover having a two-way automatic opening and closing means characterized in that the insertion groove is formed is covered with the manhole cover is fitted in the insertion groove. According to claim 2, The assembling frame is assembled to the opening of the housing is formed in the assembling protrusions to be assembled in the assembling groove of the opening in order to prevent the flow in the assembled state of the outer wall of the opening is a flow preventing groove The manhole cover having a two-way automatic opening and closing means is formed and the flow preventing projection is formed on the outer wall of the assembly frame to be engaged with the flow preventing groove. According to claim 2 or 4, wherein the switch is assembled by the assembly frame is a wing is formed in a predetermined width, the shaft is protruded on one side of the blade and the other side is further formed as the tip of the pinned shaft Manhole cover having a two-way automatic opening and closing means characterized in that the front of the wing is curved overlapping portion is formed. 6. The manhole cover according to claim 5, wherein both sides of the wing are formed so as to form a fine small protrusion to induce close contact with the inner wall of the inner space. The manhole cover according to claim 2, wherein the positions of the weights of the switchgear are formed to be equally divided with each other on both sides by the openings formed in the diagonal directions of both walls of the housing.

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