KR200328961Y1 - Manhole cover opening fastening device - Google Patents

Abstract

The present invention relates to a manhole cover locking device that prevents the manhole cover from being opened further by installing an anti-rotation pin to prevent the manhole cover from being rotated and the locking device installed so that the manhole cover cannot be easily opened from an external impact.

Conventional manholes can be rotated by a forced force even when the manhole cover (5) is fastened to the manhole frame (1), so that the locking piece (6) is in an open position, that is, the insertion groove (4) There was a risk of falling off when an external shock was applied.

In addition, if the opening position is not indicated at the time of opening, there was a disadvantage in that the locking piece 6 of the manhole cover 5 could not be easily found at a position to be separated from the manhole frame 1.

The present invention has a plurality of inclined projections 102 inwardly spaced in the insertion groove 103 inside the top of the manhole frame 10 to solve the conventional disadvantages, and the insertion groove around the side of the manhole cover 20 After inserting into the 103, a predetermined interval of rotation is formed to form a plurality of catching pieces 201 to be prevented from being caught by the catching jaw 102, and the upper side of the manhole frame 10 of the manhole cover 20 An anti-rotation device to control the rotation was configured.

By the configuration of the present invention, the manhole locking device is prevented from being opened by the locking jaw of the manhole cover and the locking piece of the manhole cover which is locked thereto, and also by the locking groove of the manhole cover and the rotation preventing pin of the manhole frame coupled thereto. Since the manhole cover is prevented from rotating, the manhole cover is prevented from opening in a double way, so any external shock may be applied to prevent the manhole cover from opening.

In addition, the anti-rotation pin and pin hole of the manhole frame and the pin groove of the lid has a function of indicating the locking position and the opening position has an effect that can be easily performed to open and close the manhole.

Description

Manhole cover opening fastening device

The present invention relates to a manhole cover locking device that prevents the manhole cover from being opened further by installing an anti-rotation pin to prevent the manhole cover from being rotated and the locking device installed so that the manhole cover cannot be easily opened from an external impact.

The manhole locking device is provided to prevent the manhole cover from being easily opened and to prevent the safety accident from being easily opened by external shock.

This manhole locking device is developed and applied by the present applicant and registered under the registration number 336293, the structure of which formed a plurality of engaging pieces (6) at regular intervals around the manhole cover (5), the corresponding manhole The locking piece 6 is inserted into the upper end of the frame 1, and the locking jaws 3 are formed between the insertion grooves 4, and the manhole cover 5 is rotated by a predetermined interval after the manhole cover 5 is inserted. It is comprised so that the piece 6 may be caught by the latching jaw 4, and may not be separated to the upper part.

However, since the pre-registered manhole locking device can be rotated by a force even when the manhole cover 5 is fastened to the manhole frame 1, the locking piece 6 is in an open position, that is, an insertion groove when it is incorrectly locked. There was a risk of leaving the building in (4), if an external shock was applied.

In addition, if the opening position is not indicated at the time of opening, there was a disadvantage in that the locking piece 6 of the manhole cover 5 could not be easily found at a position to be separated from the manhole frame 1.

The present invention has been devised to solve the conventional problems as described above, the object is to prevent the opening of the manhole cover to double to obtain a perfect opening prevention effect in any external shock.

In addition, another object of the present invention is to make it easier to know the opening and closing position of the manhole cover to facilitate the opening and closing of the manhole cover.

In addition, another object of the present invention is to provide a locking device that is not rotated by a forced force after the manhole cover is fastened to the manhole frame.

In addition, another object of the present invention is to provide a locking device that can more easily perform the opening and closing operations of the manhole cover.

The present invention for achieving the above object,

A plurality of locking projections protruded inwardly at intervals between the insertion grooves inside the upper part of the manhole frame,

The anti-rotation device for regulating the rotation of the manhole cover on one side of the upper end of the manhole,

It is achieved by forming a plurality of engaging pieces that are inserted into the insertion groove around the side of the manhole cover and rotated by a predetermined interval to prevent the separation from being caught on the locking jaw.

In addition, the present invention for achieving another object,

A pinhole having an upper and an inner opening on one side of the manhole frame having a manhole cover seating jaw on an inner circumferential surface thereof, a rotation preventing device for controlling rotation of the manhole cover on the pinhole, and a transverse direction on one side of the bottom of the pinhole Configure the locking groove formed in,

A locking piece protruding outwardly from the side lower end portion of the manhole cover and inserted into the locking groove, and at least one locking jaw protruding from the lower portion of the manhole cover on the lower side of the manhole cover opposite to the pinhole Is achieved.

1 is a structural diagram of a manhole cover locking device according to the prior art.

Figure 2 is an exploded perspective view showing the structure of the manhole cover locking device according to the first embodiment of the present invention.

3 is a cross-sectional view of the combination of the manhole cover locking device of FIG.

Figure 4 is a locking operation state of the manhole cover locking device of Figure 2;

Figure 5 is another embodiment of the anti-rotation device of FIG.

Figure 6 is an exploded perspective view showing the structure of the manhole cover locking device according to a second embodiment of the present invention.

7 is a cross-sectional view of the manhole cover locking device of FIG.

8 is a locked state of the manhole cover locking device of FIG.

9 is another embodiment of the rotation preventing device of FIG.

10 is a structural view of the hinge coupling portion of the rotation preventing device.

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

10-Manhole Frame 101-Seating Jaw 102-Hanging Jaw

103-Insertion groove 104-Pinhole 105-Shaft part

106-Guide groove 107-Anti-rotation pin 108-Hinge shaft

109-Opening section 20-Manhole cover 201-Hanging pieces

202-Pin Groove

30-Manhole frame 301-Seating jaw 304-Pinhole

305-Shaft 306-Guide groove 307-Anti-rotation bundle

308-Hinge Shaft 309-Locking Groove

40-Manhole cover 401-Locking piece 402-Hanging jaw

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

Figure 2 is an exploded perspective view showing the structure of the manhole cover locking device according to the first embodiment of the present invention, Figure 3 is a combined cross-sectional view of the manhole cover lock of Figure 2, Figure 4 of the manhole cover lock of Figure 2 Lock operation status diagram.

As shown in the figure, the mandrel 10 has a seating jaw 101 in which a manhole cover 20 is seated, and an upper portion of the seating jaw 101, that is, an upper end of the manhole frame 10, protrudes inwardly. A plurality of locking jaws 102 are formed at regular intervals. At this time, the insertion groove 103 is naturally formed between the locking projections 102 projected inwardly, the radius of the circle formed by the inner ends of the locking projections 102 is large enough to insert the lid 20.

The lid 20 seated on the manhole frame 10 protrudes to the lower side of the circumferential surface in the same manner as the arrangement and the number of the insertion groove 103 of the engaging pieces 201 having the size of the insertion groove 103.

An anti-rotation device is installed between the manhole frame 10 and the lid 20 of this structure to prevent rotation of the lid 20.

The anti-rotation device forms a pinhole 104 having an upper side and an inner side opened on one side of the upper end of the manhole frame 10, and the anti-rotation pins 107 on both side walls of the pinhole 104 toward the manhole frame 10. Hinged rotatably. In addition, the upper end of the lid 20 corresponding thereto forms a pin groove 202 into which the anti-rotation pin 107 is inserted.

In addition, the structure of the hinge shaft 108 of the anti-rotation pin 107 is formed of an elliptical or rectangular structure having a long axis and a long axis, not a circle, and the corresponding bearing portion 105 has a diameter capable of rotating the long axis. To form a guide groove 106 of the short axis interval at the upper side.

This structure is to facilitate the mounting and detachment of the anti-rotation pin 107, when mounting the hinge shaft 108 to the guide groove 106 in the short axis coinciding with the rotation preventing pin 107 Since the long axis of the hinge shaft 108 corresponds to the guide groove 106, it is not detached. Of course, when the separation of the hinge shaft 108 in parallel with the guide groove 106 in a state where the separation is simply separated.

The fastening of the manhole cover 20 to the manhole frame 10 having such a configuration, first, the manhole frame 10 in a state in which the pin groove 202 of the manhole cover 20 is close to the pinhole 104 of the manhole frame 10. In correspondence with the open display section 109 of the " At this time, the catching pieces 201 of the manhole cover 20 are inserted downward corresponding to the insertion groove 103 of the manhole frame 10 and seated on the seating jaw 101. If the manhole cover 20 is rotated only by the locking step 102 in this state, the locking pieces 201 are positioned at the lower portions of the locking step 102 of the manhole frame 10 so that the manhole cover 20 does not fall upward. At the same time, the pin groove 202 of the manhole cover 20 faces the pinhole 104 of the manhole frame 10.

In this state, when the rotation preventing pin 107 installed on one side of the manhole frame 10 is inserted into the pin groove 202 of the lid 20, the manhole cover 20 is a rotation preventing pin coupled to the pin groove 202 ( It is fixed by the 107 so that the manhole cover 20 can maintain a firm coupling state.

When the manhole cover 20 is opened, the anti-rotation pin 107 of the manhole frame 20 is rotated upward to separate from the pin groove 202, and then the pin groove 202 is an open display portion 109 of the manhole frame 10. Rotate a predetermined interval to face against. In this state, since the locking pieces 201 of the manhole cover 20 are located in the insertion grooves 103 of the manhole frame 10, the manhole cover 20 is simply opened by lifting the manhole cover 20.

Figure 5 is another embodiment of the anti-rotation device of Figure 2, by turning the rear side of the pinhole 114 as shown, so that the overall shape to form a 'b' shape and the anti-rotation pin 117 also has the same shape and hinge The shaft 118 forms and couples the bearing portion 115 to both rear walls of the rear end of the redirected pinhole 114. The anti-rotation pin 117 of this structure has a structure that is opened and closed to the side and the function is the same.

At this time, the anti-rotation pin 117 so that the end is out of the circumference of the manhole frame 10 during the open rotation so as not to interfere with the opening and closing of the manhole cover 20.

Figure 6 is an exploded perspective view showing the structure of the manhole cover locking device according to a second embodiment of the present invention, Figure 7 is a cross-sectional view of the manhole cover locking device of Figure 5, Figure 8 is an operating state of the rotation preventing device of Figure 5 to be.

As shown in the figure can be installed by varying the structure of the manhole cover locking device.

That is, the manhole cover seating jaw 301 is provided on the inner circumferential surface of the manhole frame 30, a pinhole 304 is formed on one side of the upper part of the manhole frame 30, and a transverse direction is formed at the bottom of one wall of the pinhole 304. The locking groove 309 is formed.

In addition, protruding outwardly at one lower end of the circumferential surface of the manhole cover 40 to form a locking piece 401 to be inserted into the locking groove 309 of the manhole frame 30, and seated at the lower end of the opposite manhole cover 40 The jaw 301 constitutes at least one locking jaw 402 protruding from the lower portion of the jaw 301.

And the anti-rotation device for preventing the rotation of the manhole cover 40 is installed in the pinhole 304 of the manhole frame 10.

This anti-rotation device is configured by hinge-locking the anti-rotation bundle 307 to be rotatable in the pinhole (304). The anti-rotation bundle 307 is closed in the state in which the lock piece 401 is inserted into the lock groove 309 to support the rear side of the lock piece 401 inserted in the lock groove 309 so as not to be reversed. Do this.

When locking and fastening the manhole cover 40 of this structure to the manhole frame 30, the locking jaw 402 of the manhole cover 40 is located on the opposite side of the pinhole 304 of the manhole frame 30 and at the same time the locking piece After the 401 corresponds to the pinhole 304, the lid 40 is closed while the locking jaw 402 is placed on the lower portion of the seating jaw 301. When the locking piece 401 is seated in the pinhole 304 of the manhole frame 30, the lid 40 is rotated toward the locking groove 309 so that the locking piece 401 is inserted into the locking groove 309.

Then, when the rotation prevention bundle 307 is rotated to close the opening of the pinhole 304, the locking piece 401 is caught by the rotation prevention bundle 307 and thus cannot be retracted, thereby preventing the reverse rotation of the lid 40.

Thus, the hinge shaft 308 of the anti-rotation bundle 307 to prevent the rotation of the lid 40 has a structure that is easily removable. That is, as in the first embodiment, the shape of the hinge shaft 308 is an ellipse or a rectangular structure having long and short axes rather than a circle, and the bearing portion 305 supporting the hinge shaft 308 has an upper end opening. It is connected to the guide grooves 306 of the shortened intervals when the combined rotation preventing bundle 307 when the short axis of the hinge shaft 308 coincides with the guide grooves 306 and has a structure to push. Of course, when the anti-rotation bundle 307 is rotated, since the long axis of the hinge shaft 308 corresponds to the guide groove 306, the hinge shaft 308 does not fall back, and when the separation is performed, the short axis is parallel to the guide groove 306. After positioning, it is easily separated.

Also in the structure of the anti-rotation device of this structure it may have the shape of the first embodiment. That is, as shown in Figure 9 by folding the rear side of the pinhole 314 to form a 'b' shape and the anti-rotation bundle 317 also has the same shape and the hinge shaft 318 of the redirected pinhole 314 The water bearing portion 315 is formed on both rear walls of the rear portion and is coupled thereto. The anti-rotation bundle 317 of this structure will have a structure that is opened and closed to the side.

In addition, another embodiment of the anti-rotation device forms a pin groove 403 on the top surface of the lid 40 facing the pin hole 324 when the locking piece 401 is inserted into the locking groove 309 as in In the pinhole 324 of the manhole frame 30, bearing shafts 325 are formed on both side walls, and anti-rotation pins 327 are inserted into the pin grooves 403. It has a structure hinged to 325.

The anti-rotation pin 327 is the anti-rotation pin 327 of the lid 40 when closing the anti-rotation pin 327 in the state in which the locking piece 401 of the lid 40 is inserted into the locking groove 309 It is inserted into the pin groove 403 and at the same time blocking the rear side of the locking piece 401 effectively prevents the reverse rotation of the lid 40. Therefore, the opening phenomenon of the manhole cover 40 can be completely blocked.

In addition, the hinge portion of the anti-rotation pin 327 may have the structures of the first and second embodiments described above.

As described above, the present invention is prevented from being opened by the locking jaw of the manhole cover and the locking hole of the manhole cover which is held by the manhole locking device, and the locking groove of the manhole cover and the anti-rotation pin of the manhole frame coupled thereto. Since it prevents the rotation of the manhole cover by the end to prevent the opening of the manhole cover in the double, it can have a perfect manhole cover prevention effect even if any external shock is applied.

In addition, the anti-rotation pin and pin hole of the manhole frame and the pin groove of the lid has a function of indicating the locking position and the opening position has an effect that can be easily performed to open and close the manhole.

Claims (6)

A plurality of locking projections 102 protruded inwardly at intervals between the insertion grooves 103 inside the upper end of the manhole frame 10, After inserting into the insertion groove 103 around the side surface of the manhole cover 20 to form a plurality of locking pieces 201 to rotate the predetermined interval to prevent the separation hanging on the locking jaw (102), Manhole cover locking device, characterized in that configured to prevent the rotation of the manhole cover 20 on the top side of the manhole frame 10 to control the rotation. According to claim 1, The anti-rotation device, the upper part of the upper manhole frame 10 in a state where the locking jaw 102 of the manhole cover 20 is located below the locking jaw 102 of the manhole frame 10 And a pinhole 104 having an inner side open, hinged to the pinhole 104 to be rotated toward the lid 20, and corresponding to an end of the anti-rotation pin 107. Manhole cover locking device, characterized in that the pin groove 202 is formed on the upper end of the lid (20). 3. The manhole cover locking device according to claim 2, wherein an open display portion (109) is formed on both sides of the pinhole (104) to indicate a position where the manhole cover (20) is opened. Pinhole 304 of the shape of the upper and the inner side is opened on one side of the manhole frame 30 having a manhole cover seating jaw on the inner circumferential surface, and rotation prevention to control the rotation of the manhole cover 40 to the pinhole 304 A device and a locking groove 309 formed in a transverse direction at a lower end of one side wall of the pinhole 304, A locking piece 401 protruding outward from the side lower end portion of the manhole cover 40 and inserted into the locking groove 309, and the manhole frame below the manhole cover 40 opposite to the pinhole 304. Manhole cover locking device, characterized in that at least one locking jaw 402 protruding to be caught in the seating jaw (301) lower portion of the 30. The method of claim 4, wherein the rotation preventing device is hinged to the pinhole 304 of the manhole frame 30 to block the rear side of the locking piece 401 inserted into the locking groove 309 of the manhole frame 30. Manhole cover locking device, characterized in that the anti-rotation bundle (307). The anti-rotation device of claim 4, wherein the anti-rotation device includes a pin groove 403 formed at an upper end of the lid 40 facing the pin hole 324 in a state where the locking piece 401 is inserted into the locking groove 309. and, The manhole characterized in that the pinhole 324 of the manhole frame 30 is hinged to the rotation preventing pin 327 inserted into the pin groove 403 of the lid 40 while preventing the retraction of the locking piece 401 of the lid. Lid Lock.