WO2004046476A1

WO2004046476A1 - Ditch cover

Info

Publication number: WO2004046476A1
Application number: PCT/KR2003/002454
Authority: WO
Inventors: Woong-Bae Oh
Original assignee: Woong-Bae Oh
Priority date: 2002-11-15
Filing date: 2003-11-14
Publication date: 2004-06-03
Also published as: AU2003277736A1

Abstract

Disclosed herein is a cover mounted on the upper part of a drainage channel formed in the street. The cover has a pair of side plates arranged opposite to each other while being spaced apart from each other. The improvement of the cover for drainage channels includes bent plates each comprising an upper plate part vertically disposed between the side plates, a front bent plate part formed integrally with the upper plate part while being bent downward at the front end of the upper plate part, and a rear bent plate part formed integrally with the upper plate part while being bent downward at the rear end of the upper plate part. The bent plates are securely attached to the inner surfaces of the side plates in large numbers while the top surfaces of the upper plate parts are flush with the top ends of the side plates. Between the bent plates are defined drainage openings.

Description

DITCH COVER

Technical Field

The present invention relates to a cover mounted on the upper part of a drainage channel formed in the street, and more particularly to a cover for drainage channels, the structure of which is simple and strong, and that is capable of adequately hiding the interior of a drainage channel from the outside, whereby vehicles may peacefully drive or people may comfortably walk over the top surface of the cover mounted on the upper part of the drainage channel.

Background Art

Generally, a cover for drainage channels is mounted on the upper part of a drainage channel formed in the street for preventing lump waste from entering the inside of the drainage channel so that rainwater or wastewater is smoothly drained through the drainage channel.

Such a cover for drainage channels is constructed such that a plurality of bearing bars and twisted bars are arranged inside a rectangular frame of the drainage channel while intersecting each other so that rainwater or wastewater is smoothly introduced into the drainage channel through the cover for drainage channels while the cover for drainage channels prevents lump waste from entering the inside of the drainage channel.

It is required that the conventional cover for drainage channels be sufficiently solid to properly support the weight of a vehicle when the vehicle passes over the top surface of the cover for drainage channels. Consequently, the structure of the cover for drainage channels is very complicated. For example, it is required that a plurality of bars be arranged while intersecting each other. As a result, the manufacture of the cover for drainage channels is not simple and convenient.

Since the plurality of bars are arranged complicatedly while intersecting each other as described above, connections between the plurality of bars are separated from each other as load is repeatedly applied to the cover for drainage channels over a long period of time. Consequently, the solidity of the cover for drainage channels is easily deteriorated. Furthermore, the inside of the drainage channel is easily seen from the top surface of the cover for drainage channels since the plurality of bars are arranged in a lattice pattern while intersecting each other. As a result, waste easily comes in sight of a pedestrian walking over the top surface of the cover for drainage channels, by which the pedestrian may feel that the drainage channel is very dirty and thus not sanitary.

Since the plurality of bars are arranged in a lattice pattern while intersecting each other as described above, the top surface of the cover for drainage channels is uneven. For example, the top surface of the cover for drainage channels has a plurality of prominent and depressed surface parts. Consequently, a great deal of nose is generated from the cover for drainage channels when the vehicle or the pedestrian passes over the cover for drainage channels. Also, driving of the vehicle or walking of the pedestrian is very inconvenient due to the uneven lattice pattern of the cover of the drainage channels.

Also, the conventional cover for drainage channels does not prevent a bad smell generated in the inside of the drainage channel from flowing to the outside. Consequently, such a bad smell is directly discharged from the inside of the drainage channel to the outside, whereby environmental pollution is increased. Furthermore, disease-carrying insects easily move into and out of the drainage channel through the conventional cover for drainage channels. As a result, the drainage channel may easily become a breeding place for the disease- carrying insects, whereby living quality in the vicinity of the drainage channel is considerably damaged. Disclosure of the Invention

Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a cover for drainage channels, the structure of which is simple and strong, and that is capable of adequately hiding the interior of a drainage channel from the outside, whereby vehicles may peacefully drive or people may comfortably walk over the top surface of the cover mounted on the drainage channel.

It is another object of the present invention to provide a cover for drainage channels that is capable of completely hiding the interior of the drainage channel from the outside while drainage is smoothly carried out through the drainage channel.

It is another object of the present invention to provide a cover for drainage channels that is capable of allowing water to gather in drainage openings, whereby diffusion of a bad smell from the inside of the drainage channel is prevented, and movement of disease-carrying insects into and out of the inside of the drainage channel is prevented.

It is another object of the present invention to provide a cover for drainage channels including slippage- preventing members simply and conveniently mounted on the top surface of the cover for drainage channels, whereby slippage on the cover is prevented when a vehicle or a pedestrian passes over the top surface of the cover for drainage channels. It is another object of the present invention to provide a cover for drainage channels including slippage- preventing members securely fixed to the cover for drainage channels such that they are easily detachable from the cover for drainage channels, each of the slippage-preventing members having a simple structure.

It is another object of the present invention to provide a cover for drainage channels that is capable of smoothly carrying out a drainage operation even when the cover for drainage channels is mounted on the upper part of an inclined drainage channel.

It is another object of the present invention to provide a cover for drainage channels having a simple structure such that the cover for drainage channels is properly mounted on the upper part of a curved drainage channel.

It is another object of the present invention to provide a cover for drainage channels including noise- preventing members simply attached to side plates of the cover for drainage channels so that the vibration of the cover for drainage channels is prevented after the cover for drainage channels is mounted on the upper part of the drainage channel, whereby generation of noise is effectively prevented.

It is yet another object of the present invention to provide a cover for drainage channels wherein each of the noise-preventing members has a simple structure, and the noise-preventing members are securely attached to the side plates of the cover for drainage channels.

In accordance with one aspect of the present invention, the above and other objects can be accomplished by the provision of a cover for drainage channels mounted on the upper part of a drainage channel, the cover having a pair of side plates arranged opposite to each other while being spaced apart from each other, wherein the cover comprises: bent plates each comprising an upper plate part vertically disposed between the side plates, a front bent plate part formed integrally with the upper plate part while being bent downward at the front end of the upper plate part, and a rear bent plate part formed integrally with the upper plate part while being bent downward at the rear end of the upper plate part; the bent plates being securely attached to the inner surfaces of the side plates in large numbers while the top surfaces of the upper plate parts are flush with the top ends of the side plates; and drainage openings defined between the bent plates. Preferably, the cover for drainage channels further comprises: drainage opening-screening plate parts each formed integrally with the lower end of the front bent plate part while being bent perpendicularly to the front bent plate part for screening the drainage openings; and lower drainage openings defined between the drainage opening- screening plate parts and the rear bent plate parts of neighboring bent plates, respectively.

Preferably, the cover for drainage channels further comprises: first drainage opening-screening plate parts each formed integrally with the lower end of the front bent plate part while being bent perpendicularly to the front bent plate part for screening the drainage openings; second drainage opening-screening plate parts each formed integrally with the lower end of the rear bent plate part while being bent perpendicularly to the rear bent plate part for screening the drainage openings; first lower drainage openings defined between the first drainage opening- screening plate parts and the rear bent plate parts of neighboring bent plates, respectively; and second lower drainage openings defined between the second drainage opening-screening plate parts and the front bent plate parts of neighboring bent plates, respectively, wherein the first drainage opening-screening plate parts, the second drainage opening-screening plate parts, the first lower drainage openings, and the second lower drainage openings are provided at every second bent plate.

Preferably, the cover for drainage channels further comprises: third drainage opening-screening plate parts attached to the inner surfaces of the side plates between the side plates, each of the third drainage opening- screening plate parts being disposed below the front bent plate part of a bent plate and the rear bent plate part of another neighboring bent plate for hiding the drainage openings from the outside; and third lower drainage openings defined between the rear bent plate part and the corresponding ends of the third drainage opening-screening plate parts and between the front bent plate part and the corresponding ends of the third drainage opening-screening plate parts, respectively.

In accordance with another aspect of the present invention, there is provided a cover for drainage channels mounted on the upper part of a drainage channel, the cover having a pair of side plates arranged opposite to each other while being spaced apart from each other, wherein the cover comprises: a plurality of bent plates attached to the inner surfaces of the side plates between the side plates; drainage openings defined between the bent plates; each of the bent plates having a plurality of insertion holes formed at the top surface thereof; and slippage-preventing members inserted in the insertion holes, respectively, each of the slippage-preventing members being made of a soft material and having an upper part protruded outwardly from the top surface of the respective bent plates. Preferably, each of the slippage-preventing members comprises: a contact plate making contact with the top surface of the bent plate around the insertion hole so that the contact plate is exposed to the outside of the bent plate; and an insertion rod formed integrally with the contact plate while being extended downward from the contact plate so that the insertion rod is inserted into the insertion hole.

Preferably, each of the slippage-preventing members further comprises a flange formed around the insertion rod adjacent to the end of the insertion rod so that the slippage-preventing members are forcibly fitted in the insertion holes, whereby the slippage-preventing members are securely attached to the bent plates.

In accordance with another aspect of the present invention, there is provided a cover for drainage channels mounted on the upper part of a drainage channel, the cover having a pair of side plates arranged opposite to each other while being spaced apart from each other, wherein the cover comprises: a plurality of bent plates attached to the inner surfaces of the side plates between the side plates; drainage openings defined between the bent plates; and drainage slits formed at both ends of the top surfaces of the bent plates attached to the inner surfaces of the side plates, whereby a drainage operation is smoothly carried out even when the drainage channel is inclined.

Preferably, the side plates comprise an outer curved side plate part and an inner curved side plate part, the outer curved side plate part and the inner curved side plate part being curved in the shape of a circular arc so that the bent plates are arranged in the shape of a fan between the outer curved side plate part and the inner curved side plate part.

In accordance with yet another aspect of the present invention, there is provided a cover for drainage channels mounted on the upper part of a drainage channel, the cover having a pair of side plates arranged opposite to each other while being spaced apart from each other, wherein the cover comprises: a plurality of bent plates attached to the inner surfaces of the side plates between the side plates; drainage openings defined between the bent plates; each of the side plates having a plurality of insertion holes penetrated from the outer surface thereof to the inner surface thereof, the insertion holes being arranged in the longitudinal direction of the side plate; and noise- preventing members inserted in the insertion holes, respectively, each of the noise-preventing members being made of a soft material and having an upper part protruded outwardly from the outer surface of the respective side plates . Preferably, each of the noise-preventing members comprises: a noise-preventing plate making contact with the outer surface of the side plate around the insertion hole so that the noise-preventing plate is exposed to the outside of the side plate; an insertion rod formed integrally with the noise-preventing plate while being extended from the noise- preventing plate so that the insertion rod is inserted into the insertion hole; and a flange formed around the insertion rod adjacent to the end of the insertion rod.

Preferably, each of the noise-preventing members further comprises a noise-preventing piece formed integrally with the noise-preventing plate while being extended vertically from the lower part of the noise-preventing plate and bent inwardly at the lower end of the side plate.

Brief Description of the Drawings

The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: Fig. 1 is a perspective view showing a cover for drainage channels according to a first preferred embodiment of the present invention;

Fig. 2 is a longitudinal sectional view of the cover for drainage channels taken along the line A-A of Fig. 1;

Fig. 3 is a longitudinal sectional view showing a cover for drainage channels according to a second preferred embodiment of the present invention;

Fig. 4 is a longitudinal sectional view showing a cover for drainage channels according to a third preferred embodiment of the present invention;

Fig. 5 is a longitudinal sectional view showing a cover for drainage channels according to a fourth preferred embodiment of the present invention; Fig. 6 is a longitudinal sectional view showing a cover for drainage channels according to a fifth preferred embodiment of the present invention;

Fig. 7 is a longitudinal sectional view showing a cover for drainage channels according to a sixth preferred embodiment of the present invention;

Fig. 8 is a partially exploded perspective view showing a cover for drainage channels according to a seventh preferred embodiment of the present invention;

Fig. 9 is a cross-sectional view of the cover for drainage channels according to the seventh preferred embodiment of the present invention as shown in Fig. 8;

Fig. 10 is a partially exploded perspective view showing main components of a cover for drainage channels according to an eighth preferred embodiment of the present invention;

Fig. 11 is a partially exploded perspective view showing main components of a cover for drainage channels according to a ninth preferred embodiment of the present invention; Fig. 12 is a partially exploded perspective view showing main components of a cover for drainage channels according to a tenth preferred embodiment of the present invention;

Fig. 13 is a partially exploded perspective view showing main components of a cover for drainage channels according to an eleventh preferred embodiment of the present invention;

Fig. 14 is a partially exploded perspective view showing main components of a cover for drainage channels according to a twelfth preferred embodiment of the present invention;

Fig. 15 is a perspective view showing a cover for drainage channels according to a thirteenth preferred embodiment of the present invention; Fig. 16 is a cross-sectional view of the cover for drainage channels according to the thirteenth preferred embodiment of the present invention as shown in Fig. 15 showing the cover mounted on the upper part of a drainage channel; Fig. 17 is a perspective view showing a cover for drainage channels according to a fourteenth preferred embodiment of the present invention;

Fig. 18 is a partially exploded perspective view showing a cover for drainage channels according to a fifteenth preferred embodiment of the present invention;

Fig. 19 is a partially exploded perspective view showing main components of a cover for drainage channels according to a sixteenth preferred embodiment of the present invention; and Fig. 20 is a cross-sectional view of the cover for drainage channels according to the sixteenth preferred embodiment of the present invention as shown in Fig. 19 showing the cover mounted on the upper part of a drainage channel .

Best Mode for Carrying Out the Invention

Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a perspective view showing a cover for drainage channels according to a first preferred embodiment of the present invention.

As shown in Fig. 1, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other while being spaced apart from each other by a prescribed distance. Between the side plates 10 are disposed a plurality of bent plates 20 while the bent plates 20 are arranged at regular intervals so that drainage opening 30 are defined between the bent plates 20. The bent plates 20 are securely attached to the inner surfaces of the side plates 10. The cover for drainage channels with the above- described construction is mounted on the upper part of a drainage channel formed in the street. Each of the bent plates 20 comprises: an upper plate part 21 vertically disposed between the side plates 10; a front bent plate part 22 formed integrally with the upper plate part 21 while being bent downward at the front end of the upper plate part 21; and a rear bent plate part 23 formed integrally with the upper plate part 21 while being bent downward at the rear end of the upper plate part 21.

The drainage openings 30 are naturally formed when the bent plates 20 are arranged while being spaced apart from each other. Rainwater or wastewater introduced to the upper part of the drainage channel flows into the inside of the drainage channel through the drainage openings 30.

The upper plate part 21 is disposed such that the top surface of the upper plate part 21 is flush with the top surfaces of the side plates 10 and such that the upper plate part 21 is flat vertically to the side plates 10. Consequently, vehicles may peacefully drive or people may comfortably walk over the upper plate parts of the bent plates .

The front bent plate part 22 and the rear bent plate part 23 are securely attached to the inner surfaces of the side plates 10 so that the upper plate part 21 integrally formed therewith is supported by means of the front bent plate part 22 and the rear bent plate part 23.

The front bent plate part 22 and the rear bent plate part 23 are disposed in the insides of the side plates 10.

As a result, the front bent plate part 22 and the rear bent plate part 23 are not protruded below the lower parts of the side plates 10.

Consequently, the cover for drainage channels according to the present invention has a simple and strong structure, whereby vehicles may peacefully drive or people may comfortably walk over the top surface of the cover mounted on the drainage channel.

Fig. 2 is a longitudinal sectional view of the cover for drainage channels taken along the line A-A of Fig. 1. As shown in Fig. 2, the plurality of bent plates 20 are disposed between the side plates 10 while the bent plates 20 are spaced apart from each other so that the drainage openings 30 are defined between the spaced bent plates 20. Each of the bent plates 20 comprises the upper plate part 21, the front bent plate part 22, and the rear bent plate part 23. The front bent plate part 22 and the rear bent plate part 23 are bent downward while being integrally formed with the upper plate part 21. The end of the front bent plate part 22 of the bent plate 20 is bent again in parallel with the upper plate part 21, after the front bent plate part 22 is extended vertically from the upper plate part 21. The bent end of the front bent plate part 22, which is indicated by reference numeral 30a, serves as a screening plate part for screening the drainage opening 30. Between the drainage opening- screening plate part 30a and the rear bent plate part 23 of a neighboring bent plate 20 is defined a lower drainage opening 31a. The drainage opening-screening plate part 30a serves to screen the inside of the drainage channel so that a pedestrian cannot see the inside of the drainage channel. The drainage opening-screening plate part 30a also serves to filter small-sized waste so that the small-sized waste is not introduced into the inside of the drainage channel. Rainwater or wastewater having passed through the drainage opening 30 is introduced into the inside of the drainage channel through the lower drainage opening 31a.

In the cover for drainage channels as described above, the front bent plate parts 22 of the bent plates 20 attached to the inner surfaces of the side plates 10 are provided with the corresponding drainage opening-screening plate parts 30a, by which the drainage openings 30 are completely hidden from the outside so that pedestrians cannot see waste accumulated inside the drainage channel.

Fig. 3 is a longitudinal sectional view showing a cover for drainage channels according to a second preferred embodiment of the present invention.

As shown in Fig. 3, the plurality of bent plates 20 are disposed between the side plates 10 while the bent plates 20 are spaced apart from each other so that the drainage openings 30 are defined between the spaced bent plates 20. Each of the bent plates 20 comprises the upper plate part 21, the front bent plate part 22, and the rear bent plate part 23. The front bent plate part 22 and the rear bent plate part 23 are bent downward while being integrally formed with the upper plate part 21.

The end of the front bent plate part 22 of every second bent plate 20 is bent again in parallel with the upper plate part 21 after the front bent plate part 22 is extended vertically from the upper plate part 21. The bent end of the front bent plate part 22, which is indicated by reference numeral 30b, serves as a first screening plate part for screening the drainage opening 30. Similarly, the rear bent plate part 23 of every second bent plate 20 is bent again in parallel with the upper plate part 21 after the rear bent plate part 23 is extended vertically from the upper plate part 21. The bent end of the rear bent plate part 22, which is indicated by reference numeral 30c, serves as a second screening plate part for screening the drainage opening 30. Between the first drainage opening-screening plate part 30b and the rear bent plate part 23 of a neighboring bent plate 20 is defined a first lower drainage opening 31b. Similarly, between the second drainage opening- screening plate part 30c and the front bent plate part 22 of another neighboring bent plate 20 is defined a second lower drainage opening 31c.

The first drainage opening-screening plate part 30b and the second drainage opening-screening plate part 30c serve to screen the inside of the drainage channel so that a pedestrian cannot see the inside of the drainage channel. The first drainage opening-screening plate part 30b and the second drainage opening-screening plate part 30c also serve to filter small-sized waste so that the small-sized waste is not introduced into the inside of the drainage channel. Rainwater or wastewater having passed through the drainage opening 30 is introduced into the inside of the drainage channel through the first drainage opening- screening plate part 30b and the second drainage opening- screening plate part 30c.

In the cover for drainage channels as described above, the front bent plate parts 22 and the rear bent plate parts 23 of every second bent plate 20 attached to the inner surfaces of the side plates 10 are provided with the corresponding first drainage opening-screening plate parts 30b and the corresponding second drainage opening-screening plate parts 30c, respectively, by which the drainage openings 30 are completely hidden from the outside so that pedestrians cannot see the inside of the drainage channel. Fig. 4 is a longitudinal sectional view showing a cover for drainage channels according to a third preferred embodiment of the present invention.

As shown in Fig. 4, the plurality of bent plates 20 are disposed between the side plates 10 while the bent plates 20 are spaced apart from each other so that the drainage openings 30 are defined between the spaced bent plates 20. Each of the bent plates 20 comprises the upper plate part 21, the front bent plate part 22, and the rear bent plate part 23. The front bent plate part 22 and the rear bent plate part 23 are bent downward while being integrally formed with the upper plate part 21.

Below the front bent plate part 22 of a bent plate 20 and the rear bent plate part 23 of another neighboring bent plate 20 is disposed a third drainage opening-screening plate part 30d for hiding the drainage opening 30 from the outside, which is attached to the inner surfaces of the side plates 10. Between one end of the third drainage opening- screening plate part 30d and the rear bent plate part 23 is defined a third lower drainage opening 31d. Similarly, between the other end of the third drainage opening- screening plate part 30d and the front bent plate part 22 is defined another third lower drainage opening 31d.

The third drainage opening-screening plate part 30d serves to screen the inside of the drainage channel so that pedestrians cannot see the inside of the drainage channel. The third drainage opening-screening plate part 30d also serves to filter small-sized waste so that the small-sized waste is not introduced into the inside of the drainage channel . Rainwater or wastewater having passed through the drainage opening 30 is introduced into the inside of the drainage channel through the third lower drainage opening 31d.

In the cover for drainage channels as described above, the third drainage opening-screening plate parts 30d are attached to the side plates 10 while the third drainage opening-screening plate parts 30d are disposed below the front bent plate parts 22 of the bent plates 20 and the rear bent plate parts of the neighboring bent plates 20, respectively, so that the drainage openings 30 defined between the bent plates 20 are hidden from the outside. Consequently, the drainage openings 30 are completely hidden from the outside so that pedestrians cannot see the inside of the drainage channel. Fig. 5 is a longitudinal sectional view showing a cover for drainage channels according to a fourth preferred embodiment of the present invention.

As shown in Fig. 5, the plurality of bent plates 20 are disposed between the side plates 10 while the bent plates 20 are spaced apart from each other so that the drainage openings 30 are defined between the spaced bent plates 20. Each of the bent plates 20 comprises the upper plate part 21, the front bent plate part 22, and the rear bent plate part 23. The front bent plate part 22 and the rear bent plate part 23 are bent downward while being integrally formed with the upper plate part 21.

The front bent plate part 22 of the bent plate 20 is bent again in parallel with the upper plate part 21 after the front bent plate part 22 is extended vertically from the upper plate part 21. The bent end of the front bent plate part 22, which is indicated by reference numeral 30a, serves as a screening plate part for screening the drainage opening 30. Between the drainage opening-screening plate part 30a and the rear bent plate part 23 of a neighboring bent plate 20 is defined a lower drainage opening 31a.

The drainage opening-screening plate part 30a is further extended and bent upward while being in parallel with the front bent plate part 22 of the bent plate 20 such that the rear bent plate part 23 of the bent plate 20 is surrounded. The upward bent end of the drainage opening- screening plate part 30a, which is indicated by reference numeral 32a, serves as a water screen forming plate part. Between the water screen forming plate part 32a and the rear bent plate part 23 is defined an upper drainage opening 33a. A water screen is formed by means of the water screen forming plate part 32a when rainwater introduced through the drainage opening 30 is collected in the water screen forming plate part 32a. Consequently, a bad smell generated inside the drainage channel cannot be discharged to the outside. Furthermore, movement of disease-carrying insects into and out of the drainage channel is prevented by means of the water screen forming plate part 32a.

Rainwater having passed through the drainage opening 30 and the lower drainage opening 31a is introduced into the inside of the drainage channel through the upper drainage opening 33a .

Fig. 6 is a longitudinal sectional view showing a cover for drainage channels according to a fifth preferred embodiment of the present invention. As shown in Fig. 6, the plurality of bent plates 20 are disposed between the side plates 10 while the bent plates 20 are spaced apart from each other so that the drainage openings 30 are defined between the spaced bent plates 20. Each of the bent plates 20 comprises the upper plate part 21, the front bent plate part 22, and the rear bent plate part 23. The front bent plate part 22 and the rear bent plate part 23 are bent downward while being integrally formed with the upper plate part 21.

The front bent plate part 22 of every second bent plate 20 is bent again in parallel with the upper plate part 21 after the front bent plate part 22 is extended vertically from the upper plate part 21. The bent end of the front bent plate part 22, which is indicated by reference numeral 30b, serves as a first screening plate part for screening the drainage opening 30. Similarly, the rear bent plate part 23 of every second bent plate 20 is bent again in parallel with the upper plate part 21 after the rear bent plate part 23 is extended vertically from the upper plate part 21. The bent end of the rear bent plate part 22, which is indicated by reference numeral 30c, serves as a second screening plate part for screening the drainage opening 30. Between the first drainage opening-screening plate part 30b and the rear bent plate part 23 of a neighboring bent plate 20 is defined a first lower drainage opening 31b. Similarly, between the second drainage opening-screening plate part 30c and the front bent plate part 22 of another neighboring bent plate 20 is defined a second lower drainage opening 31c.

The first drainage opening-screening plate part 30b is further extended and bent upward while being in parallel with the front bent plate part 22 of the bent plate 20 such that the rear bent plate part 23 of the bent plate 20 is surrounded. The upward bent end of the first drainage opening-screening plate part 30b, which is indicated by reference numeral 32b, serves as a first water screen forming plate part. Between the first water screen forming plate part 32b and the rear bent plate part 23 is defined a first upper drainage opening 33b. Similarly, the second drainage opening-screening plate part 30c is further extended and bent upward while being in parallel with the rear bent plate part 23 of the bent plate 20 such that the front bent plate part 22 of the bent plate 20 is surrounded. The upward bent end of the second drainage opening-screening plate part 30c, which is indicated by reference numeral 32c, serves as a second water screen forming plate part. Between the second water screen forming plate part 32c and the front bent plate part 22 is defined a second upper drainage opening 33c.

A water screen is formed by means of the first water screen forming plate part 32b when rainwater introduced through the drainage opening 30 is collected in the first water screen forming plate part 32b. Consequently, a bad smell generated inside the drainage channel cannot be discharged to the outside. Furthermore, movement of disease- carrying insects into and out of the drainage channel is prevented by means of the first water screen forming plate part 32b. Similarly, another water screen is formed by means of the second water screen forming plate part 32c when rainwater introduced through the drainage opening 30 is collected in the second water screen forming plate part 32c. Consequently, a bad smell generated inside the drainage channel cannot be discharged to the outside. Furthermore, movement of disease-carrying insects into and out of the drainage channel is prevented by means of the second water screen forming plate part 32c. Rainwater having passed through the drainage opening

30 and the first lower drainage opening 31b is introduced into the inside of the drainage channel through the first upper drainage opening 33b. Similarly, rainwater having passed through the drainage opening 30 and the second lower drainage opening 31c is introduced into the inside of the drainage channel through the second upper drainage opening 33c.

Fig. 7 is a longitudinal sectional view showing a cover for drainage channels according to a sixth preferred embodiment of the present invention.

As shown in Fig. 7, the plurality of bent plates 20 are disposed between the side plates 10 while the bent plates 20 are spaced apart from each other so that the drainage openings 30 are defined between the spaced bent plates 20. Each of the bent plates 20 comprises the upper plate part 21, the front bent plate part 22, and the rear bent plate part 23. The front bent plate part 22 and the rear bent plate part 23 are bent downward while being integrally formed with the upper plate part 21. Below the front bent plate part 22 of a bent plate 20 and the rear bent plate part of another neighboring bent plate 20 is disposed a third drainage opening-screening plate part 30d for hiding the drainage opening 30 from the outside, which is attached to the inner surfaces of the side plates 10. Both ends of the third drainage opening-screening plate part 30d are further extended and bent upward while being in parallel with the rear bent plate part 23 and the front bent plate part 22 of the bent plate 20 such that the rear bent plate part 23 and the front bent plate part 22 of the bent plate 20 are surrounded. The upward bent ends of the third drainage opening-screening plate part 30d, each of which is indicated by reference numeral 32d, serve as third water screen forming plate parts. Between the third water screen forming plate part 32d and the front bent plate part 22 is defined a third upper drainage opening 33d. Similarly, between the third water screen forming plate part 32d and the rear bent plate part 23 is defined another third upper drainage opening 33d.

A water screen is formed by means of the third water screen forming plate part 32d when rainwater introduced through the drainage opening 30 is collected in the third water screen forming plate part 32d. Consequently, a bad smell generated inside the drainage channel cannot be discharged to the outside. Furthermore, movement of disease- carrying insects into and out of the drainage channel is prevented by means of the third water screen forming plate part 32d.

Rainwater having passed through the drainage opening 30 is introduced into the inside of the drainage channel through the third upper drainage opening 33d.

In the cover for drainage channels as described above, the plurality of bent plates 20 are disposed between the side plates 10, and the plurality of third drainage opening- screening plate parts 30d are disposed below the bent plates 20 between the side plates. Consequently, the cover for drainage channels can be easily manufactured while the drainage openings 30 can be easily hidden from the outside and the bad smell can be easily isolated.

Other preferred embodiments of the present invention will be subsequently described in detail with reference to the accompanying drawings .

Fig. 8 is a partially exploded perspective view showing a cover for drainage channels according to a seventh preferred embodiment of the present invention. As shown in Fig. 8, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage opening 30 are defined between the bent plates 20. Through the top surface of each of the bent plates 30 are formed a plurality of insertion holes 40. In the insertion holes 40 are fitted slippage-preventing members 50, respectively, each of which is made of a soft material.

Specifically, each of the slippage-preventing members 50 comprises: a contact plate 51 making contact with the top surface of the bent plate 20 around the insertion hole 40 so that the contact plate 51 is exposed to the outside of the bent plate 20; an insertion rod 52 formed integrally with the contact plate 51 while being extended downward from the contact plate 51 so that the insertion rod 52 is inserted into the insertion hole 40; and a flange 53 formed around the insertion rod 52 adjacent to the end of the insertion rod 52.

The insertion hole 40 is formed downward from the upper surface of the bent plate 20 to the lower surface of the bent plate 20 so that the slippage-preventing members 50 can be easily fitted in the insertion hole 40.

Each of the slippage-preventing members 50 is formed of a soft material, such as rubber or synthetic resin. Consequently, the slippage-preventing member 50 can be easily fitted into the insertion hole 40. Moreover, the slippage-preventing member 50 has a frictional force, by which slippage on the cover for drainage channels may be prevented.

Preferably, the contact plate 51, the insertion rod 52, and the flange 53 may be made of a soft material, such as rubber or synthetic resin, and may be integrally formed with each other as a single body.

Fig. 9 is a cross-sectional view of the cover for drainage channels according to the seventh preferred embodiment of the present invention as shown in Fig. 8. As shown in Fig. 9, the insertion hole 40 is formed through the top surface of the bent plate, both ends of which are attached to the inner surfaces of the side plates 10 between the side plates 10. The slippage-preventing member 50 is fitted in the insertion hole 40. The insertion rod 52 of the slippage-preventing member

50 is forcibly inserted into the insertion hole 40 until the contact plate 51 of the slippage-preventing member 50 makes contact with the top surface of the bent plate 20 around the insertion hole 40. After the insertion rod 52 of the slippage-preventing member 50 is fully inserted into the insertion hole 40, the flange 53 emerges from the insertion hole 40 and then makes contact with the bottom surface of the bent plate 20 around the insertion hole 40.

As can be seen from the above description, the flange 53 serves to prevent the slippage-preventing member 50 from escaping from the insertion hole 40.

The slippage-preventing member 50 is fitted into the insertion hole 40 from the top surface of the bent plate 20. Consequently, the slippage of a pedestrian is prevented by means of the frictional force formed at the contact plate 51 when the pedestrian walks over the top surface of the bent plate 20.

In the cover for drainage channels as described above, the slippage-preventing members 50 having the simple structure are easily mounted at the bent plates 20, whereby the slippage of the pedestrian is effectively prevented when he or she walks over the cover for drainage channels according to the present invention.

Fig. 10 is a partially exploded perspective view showing main components of a cover for drainage channels according to an eighth preferred embodiment of the present invention .

As shown in Fig. 10, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage openings 30 are defined between the bent plates 20. Through the top surface of each of the bent plates 30 are formed a plurality of insertion holes 40. In the insertion holes 40 are fitted slippage-preventing members 50, respectively, each of which is made of a soft material. Specifically, each of the slippage-preventing members

50 comprises: a contact plate 51 making contact with the top surface of the bent plate 20 around the insertion hole 40 so that the contact plate 51 is exposed to the outside of the bent plate 20; an insertion rod 52 formed integrally with the contact plate 51 while being extended downward from the contact plate 51 so that the insertion rod 52 is inserted into the insertion hole 40; a flange 53 formed around the insertion rod 52 adjacent to the end of the insertion rod 52; and an embossed part 54 formed at the top surface of the contact plate 51.

The embossed part 54 of the slippage-preventing member 50 includes a plurality of protrusions, each having a triangular section, which are continuously formed at the top surface of the contact plate 51 of the slippage-preventing member 50. Consequently, slippage on the top surface of the contact plate 51 is prevented by means of the protrusions of the embossed part 54, whereby slippage-prevention effect of the contact plate 51 is increased.

Fig. 11 is a partially exploded perspective view showing main components of a cover for drainage channels according to a ninth preferred embodiment of the present invention .

As shown in Fig. 11, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage openings 30 are defined between the bent plates 20. Through the top surface of each of the bent plates 30 are formed a plurality of insertion holes 40. In the insertion holes 40 are fitted slippage-preventing members 50, respectively, each of which is made of a soft material. Specifically, each of the slippage-preventing members

The embossed part 54 of the slippage-preventing member 50 includes a plurality of prominent parts, which are formed at the top surface of the contact plate 51 of the slippage- preventing member 50. Consequently, slippage on the top surface of the contact plate 51 is prevented by means of the prominent parts of the embossed part 54 when a pedestrian walks over the top surface of the contact plate 51, whereby slippage-prevention effect of the contact plate 51 is increased. Fig. 12 is a partially exploded perspective view showing main components of a cover for drainage channels according to a tenth preferred embodiment of the present invention.

As shown in Fig. 12, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage openings 30 are defined between the bent plates 20. Through the top surface of each of the bent plates 30 are formed a plurality of insertion holes 40. In the insertion holes 40 are fitted slippage-preventing members 50, respectively, each of which is made of a soft material.

Specifically, each of the slippage-preventing members 50 comprises: a contact plate 51 making contact with the top surface of the bent plate 20 around the insertion hole 40 so that the contact plate 51 is exposed to the outside of the bent plate 20; an insertion rod 52 formed integrally with the contact plate 51 while being extended downward from the contact plate 51 so that the insertion rod 52 is inserted into the insertion hole 40; and a plurality of flanges 55 formed around the insertion rod 52. As the insertion rod 52 of the slippage-preventing member 50 is inserted into the insertion hole 40, the flanges 55 are successively squashed between the inner circumferential surface of the insertion hole 40 and the outer circumferential surface of the insertion rod 52. As a result, the insertion rod 52 is forcibly fitted in the insertion hole 40 so that the insertion rod 52 is securely held in the insertion hole 40.

Preferably, the contact plate 51, the insertion rod 52, and the flanges 55 may be made of a soft material, such as rubber or synthetic resin, and may be integrally formed with each other as a single body.

Fig. 13 is a partially exploded perspective view showing main components of a cover for drainage channels according to an eleventh preferred embodiment of the present invention.

As shown in Fig. 13, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage openings 30 are defined between the bent plates 20. Through the top surface of each of the bent plates 30 are formed a plurality of insertion holes 40. Adjacent to each of the insertion holes 40 is formed an auxiliary insertion hole 41. In the insertion hole 40 and the auxiliary insertion hole 41 are fitted a slippage-preventing member 50, which is made of a soft material. Specifically, the slippage-preventing member 50 comprises: a contact plate 51 making contact with the top surface of the bent plate 20 around the insertion hole 40 so that the contact plate 51 is exposed to the outside of the bent plate 20; an insertion rod 52 formed integrally with the contact plate 51 while being extended downward from the contact plate 51 so that the insertion rod 52 is inserted into the insertion hole 40; and an auxiliary insertion rod 56 formed integrally with the contact plate 51 while being extended downward from the contact plate 51, the auxiliary insertion rod 56 being disposed adjacent to the insertion rod 52 so that the auxiliary insertion rod 56 is inserted into the auxiliary insertion hole 41.

Consequently, the slippage-preventing member 50 can be further securely mounted to the top surface of the bent plate 20 by means of the auxiliary insertion hole 41 and the auxiliary insertion rod 56.

Since the insertion rod 52 is securely inserted in the insertion hole 40, and the auxiliary insertion rod 56 is securely inserted in the auxiliary insertion hole 41, the slippage-preventing member 50 cannot be easily taken off the bent plate 20 even though friction is caused when the pedestrian walks over the cover for drainage channels according to the present invention.

Fig. 14 is a partially exploded perspective view showing main components of a cover for drainage channels according to a twelfth preferred embodiment of the present invention.

As shown in Fig. 14, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage openings 30 are defined between the bent plates 20. Through the top surface of each of the bent plates 30 are formed a plurality of insertion holes 40. In the insertion holes 40 are fitted slippage-preventing members 50, respectively, each of which is made of a soft material. Specifically, each of the slippage-preventing members

50 comprises: a contact plate 51 making contact with the top surface of the bent plate 20 around the insertion hole 40 so that the contact plate 51 is exposed to the outside of the bent plate 20; an insertion rod 52 formed integrally with the contact plate 51 while being extended downward from the contact plate 51 so that the insertion rod 52 is inserted into the insertion hole 40; a flange 53 formed around the insertion rod 52 adjacent to the end of the insertion rod 52; and a plurality of cutout parts 57 formed vertically around the insertion rod 52 and the flange 53.

When the slippage-preventing member 50 is to be fitted into the insertion hole 40 of the bent plate 20, the insertion rod 52 can be easily and smoothly inserted into the insertion hole 40 by means of the cutout parts 57. On the other hand, the insertion rod 52 can be easily and smoothly separated from the insertion hole 40 by means of the cutout parts 57 when the slippage-preventing member 50 is to be separated from the insertion hole 40 of the bent plate 20. Consequently, any person can easily fit the slippage- preventing member 50 to the bent plate 20 and easily separate the slippage-preventing member 50 from the bent plate 20 by the provision of the cutout parts 57 at the slippage-preventing member 50. Still other preferred embodiments of the present invention will be subsequently described in detail with reference to the accompanying drawings.

Fig. 15 is a perspective view showing a cover for drainage channels according to a thirteenth preferred embodiment of the present invention. As shown in Fig. 15, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other while the side plates 10 are spaced apart from each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage openings 30 are defined between the bent plates 20. At both ends of each of the bent plates 20 attached to the inner surfaces of the side plates 10 are formed drainage slits 40a, respectively.

The side plates 10 serve to support the bent plates 20 attached to the inner surfaces of the side plates 10. Each of the bent plates 20 is formed in a bracket shape so that vehicles may smoothly drive or people may comfortably walk over the top surface of the bent plate 20. Wastewater arriving at the cover for drainage channels is guided into the inside of the drainage channel through the drainage openings 30 defined between the bent plates 20. In the case that the cover for drainage channels is mounted on the upper part of an inclined drainage channel, wastewater arriving at the top surfaces of the bent plates 20 may not be introduced into the drainage openings 30. At this time, the wastewater having not been introduced into the drainage openings 30 is introduced into the drainage slits 40a, whereby flow of the wastewater out of the cover for drainage channels is effectively prevented.

In other words, the drainage slits 40a, through which wastewater flowing on the top surface of the bent plates 20 is guided below the cover for drainage channels, serve to prevent wastewater arriving at the top surfaces of the bent plate 20 from flowing out of the cover of drainage channels over the side plates 10.

With the cover for drainage channels according to the present invention, therefore, smooth drainage is accomplished by the provision of the drainage slits 40a even when the cover for drainage channels is mounted on the upper part of the inclined drainage channel.

Fig. 16 is a cross-sectional view of the cover for drainage channels according to the thirteenth preferred embodiment of the present invention as shown in Fig. 15 showing the cover mounted on the upper part of a drainage channel.

In the case that the cover for drainage channels is to be mounted on the upper part of an inclined drainage channel 100, the cover for drainage channels according to the present invention can be mounted on the upper part of the inclined drainage channel 100 along the inclined top surface of the drainage channel 100. When rainwater or wastewater flows down the inclined top surface of the drainage channel 100, the rainwater or the wastewater drops down to the inside of the drainage channel 100 through the drainage openings (not shown) defined between the bent plates 20. However, rainwater or wastewater introduced to the top surfaces of the bent plates 20 flows down along the bent plates 20, and then arrives at the top end of the lower side plate 10.

At this time, the rainwater or the wastewater is introduced into the inside of the drainage channel 100 through the drainage slits 40a formed at the lower ends of the bent plates 20, whereby the rainwater or the wastewater cannot flow down over the lower side plate 10.

Consequently, the cover for drainage channels according to the present invention is capable of perfectly carrying out a drainage operation by means of the drainage slits 40a even when the cover for drainage channels according to the present invention is mounted on the upper part of the inclined drainage channel 100.

Fig. 17 is a perspective view showing a cover for drainage channels according to a fourteenth preferred embodiment of the present invention.

As shown in Fig. 17, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other while the side plates 10 are spaced apart from each other. The side plates 10 comprise an outer curved side plate part 11 and an inner curved side plate part 12. Between the outer curved side plate part 11 and the inner curved side plate part 12 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the outer curved side plate part 11 and the inner curved side plate part 12, respectively, while the bent plates 20 are arranged in the shape of a fan so that drainage openings 30 are defined between the bent plates 20. At both ends of each of the bent plates 20 attached to the inner surfaces of the outer curved side plate part 11 and the inner curved side plate part 12 are formed drainage slits 40a, respectively.

As described above, the side plates 10 comprise the outer curved side plate part 11 and the inner curved side plate part 12. Consequently, the cover for drainage channels according to the present invention can be easily mounted to the upper part of any curved or crooked drainage channel .

The bent plates 20 are attached to the outer curved side plate part 11 and the inner curved side plate part 12 while being disposed between the outer curved side plate part 11 and the inner curved side plate part 12. As a result, the bent plates 20 are arranged in the shape of a fan.

Since the plates 20 are arranged in the shape of a fan as described above, the drainage openings 30 are formed such that the width of each of the drainage openings 30 is gradually decreased from the outer curved side plate part 11 to the inner curved side plate part 12.

In the case that the cover for drainage channels according to the present invention is mounted on the upper part of the inclined drainage channel, the drainage operation can be smoothly carried out by means of the drainage slits 40a. Furthermore, the bent plates 20 can be easily attached to the inner surfaces of the outer curved side plate part 11 and the inner curved side plate part 12 by means of the drainage slits 40a.

In other words, the drainage slits 40a are formed at the horizontal parts of the bent plates 20, and thus the vertical parts of the bent plates 20 are attached to the inner surfaces of the outer curved side plate part 11 and the inner curved side plate part 12. Consequently, the attachment of the bent plates 20 to the inner surfaces of the outer curved side plate part 11 and the inner curved side plate part 12 can be easily carried out irrespective of the bent state or the curvature of the side plates 10.

As described above, the cover for drainage channels according to the present invention can be easily applied to the drainage channel that is inclined and curved in the shape of a circular arc while still carrying out the smooth drainage operation. Still other preferred embodiments of the present invention will be subsequently described in detail with reference to the accompanying drawings.

Fig. 18 is a partially exploded perspective view showing a cover for drainage channels according to a fifteenth preferred embodiment of the present invention.

As shown in Fig. 18, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other while being spaced apart from each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage openings 30 are defined between the bent plates 20. At each of the side plates 10 are formed a plurality of insertion holes 40b, which are arranged in the longitudinal direction of the side plate 10. Through the insertion holes 40b are inserted noise- preventing members 50a, respectively. Specifically, each of the noise-preventing members 50a comprises: a noise-preventing plate 51a making contact with the outer surface of the side plate 10 around the insertion hole 40b so that the noise-preventing plate 51a is exposed to the outside of the side plate 10; an insertion rod 52a formed integrally with the noise-preventing plate 51a while being extended from the noise-preventing plate 51a so that the insertion rod 52a is inserted into the insertion hole 40b; and a flange 53a formed around the insertion rod 52a adjacent to the end of the insertion rod 52a so that the flange 53a can be forcibly inserted into the insertion hole 40b.

The noise-preventing members 50a are securely attached to the side plates 10 through the insertion holes 40b. Consequently, vibration of the cover for drainage channels according to the present invention is effectively prevented after the noise-preventing members 50a are inserted into the insertion holes 40b.

Preferably, each of the noise-preventing members 50a is formed of a soft material, such as rubber or synthetic resin. Consequently, the noise-preventing member 50a can be easily fitted into the insertion hole 40. Moreover, adequate shock-absorbing and forcible fitting can be accomplished by the provision of the soft noise-preventing members.

The noise-preventing plates 51a of the noise- preventing members 50a are exposed to the outsides of the side plates 10 while the insertion rods 52a of the noise- preventing members 50a are inserted in the insertion holes 40b. Consequently, an adequate shock-absorbing effect is accomplished between the drainage channel and the side plates 10, and thus occurrence of noise caused due to the collision between the drainage channel and the side plates 10 is effectively prevented.

The noise-preventing plates 51a are securely attached to the side plates 10 by means of the insertion rods 52a, and the noise-preventing members 50a are forcibly fitted in the insertion holes 40b by means of the flanges 53a.

As described above, the cover for drainage channels according to the present invention can be mounted to the upper part of the drainage channel while occurrence of noise caused due to the collision between the drainage channel and the side plates is prevented by means of the noise- preventing members 50a each having a simple structure.

Fig. 19 is a partially exploded perspective view showing main components of a cover for drainage channels according to a sixteenth preferred embodiment of the present invention.

As shown in Fig. 19, the cover for drainage channels includes a pair of side plates 10 arranged opposite to each other while being spaced apart from each other. Between the side plates 10 are disposed a plurality of bent plates 20 such that both ends of each of the bent plates 20 are attached to the inner surfaces of the side plates 10, respectively, while the bent plates 20 are arranged at regular intervals so that drainage openings 30 are defined between the bent plates 20. At each of the side plates 10 are formed a plurality of insertion holes 40b, which are arranged in the longitudinal direction of the side plate 10. Through the insertion holes 40b are inserted noise- preventing members 50a, each of which is made of a soft material .

Specifically, each of the noise-preventing members 50a comprises: a noise-preventing plate 51a making contact with the outer surface of the side plate 10 around the insertion hole 40b so that the noise-preventing plate 51a is exposed to the outside of the side plate 10; an insertion rod 52a formed integrally with the noise-preventing plate 51a while being extended from the noise-preventing plate 51a so that the insertion rod 52a is inserted into the insertion hole 40b; a flange 53a formed around the insertion rod 52a adjacent to the end of the insertion rod 52a so that the flange 53a can be forcibly inserted into the insertion hole 40b; and a noise-preventing piece 54a formed integrally with the noise-preventing plate 51a while being extended vertically from the lower part of the noise-preventing plate 51a and bent inwardly at the lower end of the side plate 10.

The noise-preventing pieces 54a are interposed between the cover for drainage channels and the drainage channel at the outer surfaces of the side plates 10 and the lower parts of the cover for drainage channels to absorb shock generated between the cover for drainage channels and the drainage channel .

Preferably, the noise-preventing member 50a including the noise-preventing piece 54a is formed of a soft material, such as rubber or synthetic resin. Consequently, the noise- preventing member 50a can be easily attached to the side plate of the cover for drainage channels.

With the cover for drainage channels according to the present invention, therefore, noise generated due to shock is effectively prevented by means of the noise-preventing plates 51a and the noise-preventing pieces 54a.

Fig. 20 is a cross-sectional view of the cover for drainage channels according to the sixteenth preferred embodiment of the present invention as shown in Fig. 19 showing the cover mounted on the upper part of a drainage channel.

As shown in Fig. 20, the cover for drainage channels according to the present invention is mounted on the upper part of the drainage channel 100 such that the side plates

10 are spaced apart from the insides of the drainage channel 100 by a small gap distance.

When the cover for drainage channels is mounted on the upper part of the drainage channel as mentioned above, the noise-preventing plates 51a and the noise-preventing pieces

54a are disposed between the insides of the drainage channel 100 and the side plates 10 spaced apart from the insides of the drainage channel 100. Consequently, shock generated due to direct contact of the side plates 10 with the drainage channel 100 is prevented.

Even when a heavy vehicle passes over the top surfaces of the bent plates 20 fixed to the side plates 20 between the side plates 20, occurrence of noise is prevented since the side plates 10 are spaced apart from the drainage channel 100 by means of the noise-preventing plates 51a and the noise-preventing pieces 54a.

Industrial Applicability

As apparent from the above description, the present invention provides a cover for drainage channels, the structure of which is simple and strong, and that is capable of adequately hiding the interior of a drainage channel from the outside, whereby vehicles may peacefully drive or people may comfortably walk over the top surface of the cover mounted on the drainage channel. Consequently, the present invention has an effect that the cover for drainage channels is easily manufactured, the stability of the cover for drainage channels is guaranteed after the cover for drainage channels is mounted on the upper part of the drainage channel, the external environment of the drainage channel is improved, and the convenience of use is increased. With the cover for drainage channels according to the present invention, a smooth drainage operation can be carried out while the interior of the drainage channel is completely hidden from the outside. Consequently, the external environment of the drainage channel is improved with the result that the drainage channel has an aesthetically excellent appearance. Furthermore, small-sized waste is properly filtered by means of the cover for drainage channels so that the small-sized waste is not introduced into the drainage channel.

With the cover for drainage channels according to the present invention, water can gather in drainage openings, whereby diffusion of a bad smell from the inside of the drainage channel is prevented, and movement of disease- carrying insects into and out of the inside of the drainage channel is prevented. Consequently, inconvenience and environmental pollution due to the bad smell from the drainage channel are prevented. Furthermore, the propagation of the disease-carrying insects is prevented with the result that living quality is considerably improved.

The cover for drainage channels according to the present invention includes slippage-preventing members simply and conveniently mounted on the top surface of the cover for drainage channels, whereby slippage on the cover is prevented when a vehicle or a pedestrian passes over the top surface of the cover for drainage channels. Consequently, the present invention has an effect that the slippage-preventing members are easily manufactured, and thus the cost for manufacturing the slippage-preventing members is low. Furthermore, the vehicle or the pedestrian can pass over the top surface of the cover for drainage channels without slipping on the top surface of the cover for drainage channels.

The cover for drainage channels according to the present invention includes slippage-preventing members having a simple structure and securely fixed to the cover for drainage channels such that they are easily detachable from the cover for drainage channels. Consequently, the present invention has an effect that the slippage-preventing members are easily manufactured, the slippage-preventing members are easily disposed, and the slippage-preventing members are easily replaced. Furthermore, the slippage- preventing members properly carry out their functions when they are attached to the cover for drainage channels. The cover for drainage channels according to the present invention is capable of smoothly carrying out a drainage operation even when the cover for drainage channels is mounted on the upper part of an inclined drainage channel. Consequently, the present invention has an effect that application of the cover for drainage channels is not restricted.

The cover for drainage channels according to the present invention has a simple structure such that the cover for drainage channels is properly mounted on the upper part of a curved drainage channel. Consequently, the cover for drainage channels can be easily and conveniently mounted on the upper part of the curved drainage channel with the result that the cost and labor for mounting the cover for drainage channels on the upper part of the curved drainage channel are considerably reduced.

The cover for drainage channels according to the present invention includes noise-preventing members simply attached to side plates of the cover for drainage channels so that the vibration of the cover for drainage channels is prevented after the cover for drainage channels is mounted on the upper part of the drainage channel, whereby generation of noise is effectively prevented. Consequently, vibration of the cover for drainage channels is properly prevented, and occurrence of noise due to such vibration is also prevented when a heavy vehicle or a pedestrian passes over the top surface of the cover for drainage channels. Furthermore, damage to the cover for drainage channels due to shock, by which the noise is generated, is effectively prevented. With the cover for drainage channels according to the present invention, each of the noise-preventing members has a simple structure, and the noise-preventing members are securely attached to the side plates of the cover for drainage channels. Consequently, the present invention has an effect that the noise-preventing members are easily manufactured, fixed, and replaced. Furthermore, separation of the noise-preventing members from the cover for drainage channels is properly prevented.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

Claims :

1. A cover for drainage channels mounted on the upper part of a drainage channel, the cover having a pair of side plates arranged opposite to each other while being spaced apart from each other, wherein the cover comprises: bent plates each comprising an upper plate part vertically disposed between the side plates, a front bent plate part formed integrally with the upper plate part while being bent downward at the front end of the upper plate part, and a rear bent plate part formed integrally with the upper plate part while being bent downward at the rear end of the upper plate part; the bent plates being securely attached to the inner surfaces of the side plates in large numbers while the top surfaces of the upper plate parts are flush with the top ends of the side plates; and drainage openings defined between the bent plates.

2. The cover as set forth in claim 1, further comprising: drainage opening-screening plate parts each formed integrally with the lower end of the front bent plate part while being bent perpendicularly to the front bent plate part for screening the drainage openings; and lower drainage openings defined between the drainage opening-screening plate parts and the rear bent plate parts of neighboring bent plates, respectively.

3. The cover as set forth in claim 1, further comprising: first drainage opening-screening plate parts each formed integrally with the lower end of the front bent plate part while being bent perpendicularly to the front bent plate part for screening the drainage openings; second drainage opening-screening plate parts each formed integrally with the lower end of the rear bent plate part while being bent perpendicularly to the rear bent plate part for screening the drainage openings; first lower drainage openings defined between the first drainage opening-screening plate parts and the rear bent plate parts of neighboring bent plates, respectively; and second lower drainage openings defined between the second drainage opening-screening plate parts and the front bent plate parts of neighboring bent plates, respectively, wherein the first drainage opening-screening plate parts, the second drainage opening-screening plate parts , the first lower drainage openings, and the second lower drainage openings are provided at every second bent plate .

4. The cover as set forth in claim 1, further comprising : third drainage opening-screening plate parts attached to the inner surfaces of the side plates between the side plates, each of the third drainage opening-screening plate parts being disposed below the front bent plate part of a bent plate and the rear bent plate part of another neighboring bent plate for hiding the drainage openings from the outside; and third lower drainage openings defined between the rear bent plate part and the corresponding ends of the third drainage opening-screening plate parts and between the front bent plate part and the corresponding ends of the third drainage opening-screening plate parts, respectively.

5. A cover for drainage channels mounted on the upper part of a drainage channel, the cover having a pair of side plates arranged opposite to each other while being spaced apart from each other, wherein the cover comprises: a plurality of bent plates attached to the inner surfaces of the side plates between the side plates; drainage openings defined between the bent plates; each of the bent plates having a plurality of insertion holes formed at the top surface thereof; and slippage-preventing members inserted in the insertion holes, respectively, each of the slippage-preventing members being made of a soft material and having an upper part protruded outwardly from the top surface of the respective bent plates.

6. The cover as set forth in claim 5, wherein each of the slippage-preventing members comprises: a contact plate making contact with the top surface of the bent plate around the insertion hole so that the contact plate is exposed to the outside of the bent plate; and an insertion rod formed integrally with the contact plate while being extended downward from the contact plate so that the insertion rod is inserted into the insertion hole.

7. The cover as set forth in claim 6, wherein each of the slippage-preventing members further comprises a flange formed around the insertion rod adjacent to the end of the insertion rod so that the slippage-preventing members are forcibly fitted in the insertion holes, whereby the slippage-preventing members are securely attached to the bent plates.

8. A cover for drainage channels mounted on the upper part of a drainage channel, the cover having a pair of side plates arranged opposite to each other while being spaced apart from each other, wherein the cover comprises: a plurality of bent plates attached to the inner surfaces of the side plates between the side plates; drainage openings defined between the bent plates; and drainage slits formed at both ends of the top surfaces of the bent plates attached to the inner surfaces of the side plates, whereby a drainage operation is smoothly carried out even when the drainage channel is inclined.

9. The cover as set forth in claim 8, wherein the side plates comprise an outer curved side plate part and an inner curved side plate part, the outer curved side plate part and the inner curved side plate part being curved in the shape of a circular arc so that the bent plates are arranged in the shape of a fan between the outer curved side plate part and the inner curved side plate part.

10. A cover for drainage channels mounted on the upper part of a drainage channel, the cover having a pair of side plates arranged opposite to each other while being spaced apart from each other, wherein the cover comprises: a plurality of bent plates attached to the inner surfaces of the side plates between the side plates; drainage openings defined between the bent plates; each of the side plates having a plurality of insertion holes penetrated from the outer surface thereof to the inner surface thereof, the insertion holes being arranged in the longitudinal direction of the side plate; and noise-preventing members inserted in the insertion holes, respectively, each of the noise-preventing members being made of a soft material and having an upper part protruded outwardly from the outer surface of the respective side plates.

11. The cover as set forth in claim 10, wherein each of the noise-preventing members comprises: a noise-preventing plate making contact with the outer surface of the side plate around the insertion hole so that the noise-preventing plate is exposed to the outside of the side plate; an insertion rod formed integrally with the noise- preventing plate while being extended from the noise- preventing plate so that the insertion rod is inserted into the insertion hole; and a flange formed around the insertion rod adjacent to the end of the insertion rod.

12. The cover as set forth in claim 11, wherein each of the noise-preventing members further comprises a noise- preventing piece formed integrally with the noise-preventing plate while being extended vertically from the lower part of the noise-preventing plate and bent inwardly at the lower end of the side plate.