KR200216309Y1 - Locking device for under cover of manhole - Google Patents

Abstract

The present invention relates to an inner lid locking device of the manhole that can be locked firmly and tightly by quick and simple operation on the manhole support frame through a simple locking device.

Conventional inner lid locking device is composed of a rotating plate rotated by a rotary lever, and a locking pad installed around the rotating plate, when the rotating plate is rotated, the locking key is moved outwards to be locked in the manhole. It is supposed to open up. However, such a conventional lid closure device is composed of many parts, such as a rotating plate, a rotating shaft, a rotating lever and a plurality of fasteners, so that assembly and manufacturing are difficult and costly in manufacturing.

Therefore, the present invention in the manhole having the manhole cover 13 and the inner lid 14 in the manhole support 10 having upper and lower seating jaws 11 and 20, the lower seating jaw of the 20 A plurality of elastic locks (30a, 30b, 40a, 40b) having upper ends bent inward and fixing jaws (31, 41) in the inner circumference protrudingly formed to force the inner lid to the lower seating jaw. When pressed, the inner lid is lowered while the elastic lock is opened, and when it is completely seated on the lower seating jaw, the inner lid is narrowed back to its original position so that the upper surface of the inner lid is elastically locked while being tightly locked while maintaining watertightness.

Description

Locking device for under cover of manhole}

The present invention relates to an inner lid locking device of the manhole, and in particular, by installing an elastic lock on the lower seating jaw, the simple operation of pressing the inner lid into the lower seating jaw secures good watertightness, as well as opening operation. It also relates to an inner lid lock of the manhole that can be easily performed.

In general, the manhole, which communicates with the underground common ward, which is installed for the purpose of moisture proof and safety, such as communication cable or power cable, is opened with the purpose of preventing moisture and preventing unauthorized persons from entering and by the external impact. Install a lock on the inner lid to prevent the occurrence of a traffic accident.

In addition, the manhole that is concerned about the backflow of rainwater and sewage, such as underwater manholes, install a lock on the inner lid.

The conventional lid cover device is composed of a rotating plate rotatably coupled to the rotation plate, and the locking lever installed around the rotating plate and the rotating lever for rotating the rotating plate, when the rotating plate rotates the locking key is moved to the outside to be locked in the manhole, on the contrary When rotated, it was released from the fixing jaw of the manhole.

However, such a conventional lid closure device is composed of many parts, such as a rotating plate, a rotating shaft, a rotating lever and a plurality of fasteners, so that assembly and manufacturing are difficult and costly in manufacturing.

Therefore, the present invention is conceived to solve the conventional disadvantage, the purpose is to install the elastic lock on the lower seating manhole cover to lock the inner lid is good by simply pressing the inner lid to the lower seating jaw The present invention provides a manhole lid locking device that can be locked firmly to secure watertightness, and can be opened quickly and easily by a simple operation of opening an elastic lock even during an opening operation.

Figure 1a, 1b is an exploded perspective view showing the structure of the manhole inner lid lock device of the present invention.

Figure 2 is a cross-sectional view of the inner lid is locked state of the manhole inner lid locking device of the present invention.

Figure 3a, 3b is another embodiment of the manhole to which the elastic lock of the present invention is applied.

Figure 4 is another embodiment of the present invention manhole lid lock.

Figure 5 is a cross-sectional view of the inner lid lock coupled to the inner lid of Figure 4;

Figure 6 is another embodiment of the manhole to which the locking device of Figure 4 is applied.

*** Explanation of symbols for the main parts of the drawing ***

10-Manhole Support 11-Upper Seat Jaw 12-Packing

13-Manhole cover 14-Inside cover 20-Lower seating jaw

21-Clamping grooves 30a, 30b-Elastic locks 31-Jaws

32-Support 40a, 40b-Elastic Lock 42-Insertion

43-Breakaway 44-Support 45-Slope

46-assembly hole

The present invention for achieving the above object, in the manhole having a manhole cover and an inner lid in the manhole support frame having upper and lower seating jaw,

It is achieved by installing a plurality of elastic locks having a fixed jaw in the inner direction around the upper surface of the lower seating jaw.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1a, 1b is an exploded perspective view showing the structure of the manhole inner lid locking device of the present invention, Figure 2 is a cross-sectional view of the inner lid of the manhole inner lid locking device of the present invention is locked.

As shown, the manhole support 10 has an upper seating jaw 11 in which the manhole cover 13 is seated on the upper inner wall, and a lower seating jaw 20 in which the inner lid 14 is seated therein. Formed. Reference numeral 12 is a packing.

On the upper surface of the lower seating jaw 20, three elastic locks (30a, 30b) protruding upward at regular intervals at a position outside the inner diameter of the upper seating jaw (11).

The elastic locks 30a and 30b are formed by bending a rod or a plate as shown in FIG. 1B as shown in FIG. 1A, and are inclined upwardly in the opposite direction again in a state where the upper end is bent horizontally. The lower fixing jaw 31 is formed, and the lower end is bent forward and then bent backwards to cover the inner end of the lower seating jaw 20, that is, bent in a '??' shape to support 32 ).

The upper and inner surfaces of the lower seating jaw 20 in which the support part 32 is installed are provided with a clamping groove 21 into which the support part 32 of the elastic locks 30a and 30b is inserted, thereby providing the elastic locks 30a and 30b. ) Make the surfaces side by side when mounted.

When the elastic locks 30a and 30b having the structure 32 are pushed into the lock groove 21 formed in the lower seating jaw 20, the support seat 32 is opened by its elastic force and the lower seating jaw 20 is mounted. ) Is firmly combined.

In this state, the packing 12 is inserted into the lower seating jaw 20, and then the inner lid 14 is pressed from the upper side to the lower side to be pressed, and then the upper fixing jaw 31 is opened to the outside and the inner lid 14 When the seat is seated on the lower seating jaw 20, the fixing jaw 31 is returned to the inner side to resiliently support the upper surface of the inner lid 14, so that the inner lid 14 is applied with a high pressure inside or forced from the top. Even if it is opened, it is firmly fixed while maintaining watertightness. Particularly, when the inner lid 14 is closed, the upper end of the fixing jaw 31 is formed to be inclined upwardly to the outside, thereby being easily inserted.

On the other hand, when opening the inner lid 14, if the upper end of the fixing jaw 31 to the outside using a foot or a simple tool, since the inner lid 14 is free from the fixing jaw 31 is easily opened.

The locking device of this structure is mainly used for circular manholes, but can also be used for rectangular manholes as shown in FIGS. 3A and 3B. [The reference numerals given to the square manhole apply the same as the circular manhole.]

4 is another embodiment of the manhole inner lid locking device of the present invention, Figure 5 is a cross-sectional view of the inner lid locking device coupled to the inner lid of Figure 4, as shown in the up and down around the lower seating jaw (20) Assembling holes 46 for assembling the elastic locks 40a and 40b are formed at three locations at regular intervals. The assembling hole 46 is formed in a circular or rectangular shape according to the shape of the rod or plate-like elastic lock 40a, 40b.

In addition, the elastic lock (40a, 40b) has an inclined surface 45, the upper end is bent horizontally to the rear side and then bent in the vertical direction again fixed jaw 41 for elastically supporting the upper circumference of the inner lid 14 Has And the insertion portion 42 having a separation prevention jaw 43 for preventing the falling in the direction opposite to the direction inserted into the bent both sides of the bent while extending the lower end to be inserted into the assembly hole 46 is reversed. At this time, the separation prevention jaw 43 has a width enough to be inserted only when the insertion portion 42 is narrowed, and the lower end portion forms an inclined surface 45 or a curved surface to facilitate insertion into the assembly hole 46.

In addition, the ends of the upwardly bent ends of the elastic locks 40a and 40b are bent in a horizontal state again so that the support end 44 is formed so as not to be inserted more than necessary. At this time, the interval between the separation prevention jaw 43 and the support end 44 of the elastic lock 40a, 40b is the interval of the thickness of the lower seating jaw (20).

With this structure, when the elastic locks 40a and 40b are assembled to the lower seating jaw 20, the lower inserting portion 42 is forcibly inserted into the assembly hole 46 of the lower seating jaw 20.

The insertion part 42 is narrowed while being inserted into the assembly hole 46, and the separation prevention jaw 43 passes through the assembly hole 46 and then is opened by its own elastic force so that the separation prevention jaw 43 is the assembly hole 46. Is burnt at the bottom.

At the same time, since the upper end of the support end 44 supports the upper surface of the lower seating jaw 20, it is maintained in a firmly fixed state. The elastic lock 40a, 40b is also provided with three revisions at regular intervals on the upper surface of the lower seating jaw 20, respectively.

When the inner lid 14 is seated by pressing the lower seating jaw 20 in the manhole installed as described above, the inner lid 14 descends on the inclined surfaces 45 of the elastic locks 40a and 40b, and eventually elasticity. The clasps 40a and 40b are opened to the outside so that the inner lid 14 is seated on the lower seating jaw 20. At the same time, since the elastic locks 40a and 40b that have been opened are narrowed on the circumferential upper surface of the inner lid 14, the inner lid 14 is firmly locked.

This locking device can be applied to a square manhole as shown in FIG.

As described above, the present invention forms an elastic lock around the lower seating jaw at regular intervals, and when the inner lid is closed by the seating jaw, the inner seat is seated on the lower seating jaw while the fixing jaw of the elastic lock is opened to the outside. In addition, when the inner lid is seated on the lower seating jaw, the elastic lock, which was opened by the elastic force, returns to the inside to elastically support the upper surface of the inner lid, so that the inner lid is tightly coupled while maintaining watertightness. On the contrary, when the inner lid is opened, the inner lid is easily opened by a simple operation of opening the elastic lock to the outside.

In addition, since only one fastener is installed in this way, the locking device is simple to install and the manufacturing cost is reduced.

Claims (3)

In the manhole having the manhole cover 13 and the inner cover 14 to the manhole support 10 having upper and lower seating jaws 11 and 20, The upper end portion is bent inward around the upper surface of the lower seating jaw 20 and a plurality of elastic locks 30a, 30b, 40a, 40b having fixing jaws 31, 41 in the inward direction are formed to protrude. The inner lid lock of the manhole, characterized in that configured. According to claim 1, wherein the lower end of the elastic locking lock (30a, 30b) is formed to be formed in the structure to be wrapped around the inner end of the lower seating jaw (20) is inserted into the lower seating jaw (20) The inner lid lock device of the manhole. According to claim 1, A plurality of assembling holes 46 are formed at regular intervals around the lower seating jaw 20 on which the elastic locks 40a and 40b are mounted, and the elastic locks 40a and 40b. The upper end has a sloped inclined surface 45 and is horizontally bent to the rear side and then bent vertically again to constitute a fixing jaw 41 for elastically supporting the upper circumference of the inner lid 14, the lower end of the assembly hole ( 46 is inserted to be bent to have an inclined surface 45 to facilitate insertion of the separation prevention jaw 43 and the assembly hole 46 to prevent the reverse departure on one side or the front, rear side while being bent in the reverse direction after being extended to be inserted into A portion 42 is formed, and an end portion of the insertion portion 42 forms a supporting end 44 that is horizontally folded to be elastically supported on the upper surface of the lower seating jaw 20 to assemble the elastic locks 40a and 40b. The inner lid lock of the manhole, characterized in that the resilient assembly inserted into the hole (46).