KR102607984B1 - Locking device of manhole cover - Google Patents

Abstract

In the present invention, in constructing a locking device for a manhole cover, locking sockets are installed at equal intervals on three inner bottom surfaces of the manhole cover, and locking sockets are installed in the locking sockets to provide locking and noise prevention functions for the manhole as well as manhole locking. Not only does it make it easy to open the cover, but it also simplifies the locking mechanism into a single piece, making it easy to manufacture and assemble, and making it possible to expect accuracy in opening and closing operations.
As a means to solve the above problem, the present invention is an integrated locking socket with circular storage chambers formed on three inner bottom surfaces of the manhole cover, and cuts and through holes are formed on three edges and three plates of the manhole cover. Make it communicate with the circular compartment of the lock socket, insert the spring into the spring insertion rod of the lock, and then pass the lock through the circular compartment of the lock socket through the cut formed on the edge of the manhole cover to press the spring into the lock. The configured rectangular part is made to protrude past the through hole of the diaphragm, and a tool is inserted into the rectangular part that passed through the through hole to rotate the locking tool 180°, allowing the locking tool elastically installed on the spring to be inserted into the correct position while the inside of the circular storage room is moved. This allows it to move forward and backward.

Description

Locking device of manhole cover {LOCKING DEVICE OF MANHOLE COVER}

The present invention relates to a locking device for a manhole cover. In detail, locking devices are installed at three locations on the bottom of the manhole cover at equal intervals to provide locking and noise prevention functions for the manhole as well as to facilitate opening of the manhole cover. The structure of the locking device is It has been simplified so that manufacturing and assembly can be easily performed.

In general, manholes are assembled with a manhole cover and a manhole support, and are mainly installed on sidewalks or roads for maintenance, repair, and management of underground facilities.

Manholes installed on sidewalks or roads may be equipped with a locking means on the manhole cover for access control, noise prevention, and safety accident prevention due to opening or leaving the manhole cover.

Reviewing the prior art regarding manholes equipped with locking means, Patent No. 10-1238164, “Manhole with manhole cover locking function” (Patent Document 1), and Patent No. 10-1927198, “Manhole with locking device so that it is securely engaged” A “manhole cover assembly with a locking groove” (Patent Document 2) has been proposed.

Reviewing the technical content of Patent Document 1, it relates to a manhole having a manhole cover locking function, and more specifically, a lid frame and bottom in which a locking protrusion is formed along the inner periphery and an annular fastening groove is formed in the inner periphery. An operating chamber having a transfer space in the upper part is formed to face each other, a manhole cover having a fastening hole formed on the edge of the upper surface to communicate with the transport space, a guide shaft part whose one end is fixed to one side of the operating chamber, and the guide shaft part. It consists of an elastic spring inserted into the operating chamber and a transfer unit guided to the guide shaft and moved by the elasticity of the elastic spring, so that it does not shake even when a vehicle traveling at high speed passes the manhole cover, thereby reducing traffic noise. In addition to preventing safety accidents, it is also effective in preventing internal odors and gases from being discharged to the outside through gaps.

In the case of Patent Document 1, the locking means formed on the bottom of the manhole cover is formed symmetrically on both sides, and when a vehicle drives over the manhole cover, not only is there a risk of shaking around the symmetrically configured locking means, but the locking means There is some difficulty in assembling.

Reviewing the technical content of Patent Document 2, it relates to a manhole cover assembly coupled by the hinge protrusion of the manhole cover and the hinge groove of the manhole support, comprising a slide portion that maintains elasticity along the circumference on the inside of the bottom portion, and the slide portion A manhole cover provided with a plurality of locking devices having protrusions formed outwardly at the ends of the; It includes a manhole support configured to prevent the closed manhole cover from being easily opened by the locking device, wherein the manhole support includes a hinge groove in which a hinge pin is formed so that the manhole cover is hinged, and the protrusion is elastically positioned on the inside. It consists of a locking groove formed to be in close contact with the locking groove, and the locking groove is connected to the inner and lower edges of the manhole support and has a concrete bump installed to prevent the concrete being constructed from penetrating. The locking device is secure. It relates to a manhole cover assembly in which a locking groove is formed so as to be caught.

In the case of Patent Document 2, three slide parts with protrusions formed on the bottom of the manhole cover are integrally cast, and when locked, the three protrusions are locked with the locking means of the manhole support, thereby providing stable locking and preventing shaking. Although it is said to be effective, there is a disadvantage in that if it is kept in the locked state for a long time, the elasticity of the ductile iron bar is lost, making it impossible to engage smoothly.

As a means to solve these shortcomings, the present inventor has registered Patent No. 10-2263386, “Locking tool for locking a manhole cover” (Patent Document 3).

Reviewing the technical content of Patent Document 3, in constructing the manhole cover lock, the lock is separated into a fixture and a lock, and the fixture forms a circular shaft hole in the main body, and a It constitutes a mouth groove, and the locking member constitutes a circular shaft with a guide piece formed on the back of the locking member. The shaft of the locking member is inserted into the shaft hole of the fixture so that the guide piece of the shaft is inserted into the concave groove of the shaft hole. The width is wider than the width of the guide piece of the shaft rod, so that the shaft rod between the locks rotates left and right around the shaft hole of the fixture.

Therefore, locks are installed at equal intervals in three places on the inner bottom of the manhole cover to lock the manhole and prevent noise. In particular, when the lock is installed on the inner bottom of the manhole cover, if one side is lifted to open the manhole cover, the other side is locked. There is an advantage in that the locking mechanism located in two places can be rotated left and right, making it easy to open and close the manhole cover.

However, the locking device used in the locking means of the manhole cover is composed of a fixture and a locking section separately, and the locking device is assembled within the fixture so that it can rotate left and right at a certain angle to form a locking device, and the locking device is connected to the locking socket. Since it had to be assembled in the lock, there were inconveniences in manufacturing and assembling the lock.

Patent No. 10-1238164 “Manhole with manhole cover locking function” Patent No. 10-1927198 "Manhole cover assembly with a locking groove so that the lock is safely engaged." Patent No. 10-2263386 “Lock for manhole cover locking”

In the present invention, in constructing a locking device for a manhole cover, locking sockets are installed at equal intervals on three inner bottom surfaces of the manhole cover, and locking sockets are installed in the locking sockets to provide locking and noise prevention functions for the manhole as well as manhole locking. Not only does it make it easy to open the cover, but it also simplifies the locking mechanism into a single piece, making it easy to manufacture and assemble, and making it possible to expect accuracy in opening and closing operations.

As a means to solve the above problem, the present invention is an integrated locking socket with circular storage chambers formed on three inner bottom surfaces of the manhole cover, and cuts and through holes are formed on three edges and three plates of the manhole cover. Make it communicate with the circular compartment of the lock socket, insert the spring into the spring insertion rod of the lock, and then insert the lock into the lock while pushing the spring through the circular compartment of the lock socket through the cutout formed on the edge of the manhole cover. The constructed rectangular part is made to protrude past the through hole of the diaphragm, and a tool is inserted into the rectangular part that passed through the through hole to rotate the locking tool 180°, thereby allowing the inside of the circular storage room to be moved while the locking tool elastically installed on the spring is inserted into the correct position. This allows it to move forward and backward.

The present invention consists of an integrated locking socket with a circular storage room formed on three inner bottom surfaces of the manhole cover, and cuts and through holes are formed on three edges and three plates of the manhole cover to be in common with the circular storage room of the locking socket. After inserting the spring into the spring insertion rod of the lock, the lock is pushed through the circular chamber of the lock socket through the cutout formed on the edge of the manhole cover to push the spring, and the rectangular part of the lock passes through the through hole of the diaphragm. By making it protrude and inserting a tool into the rectangular part that passed through the through hole to rotate the locking tool 180°, the locking tool elastically installed on the spring can be moved forward and backward within the circular storage room with the locking tool installed in the correct position. In addition to the locking and noise prevention functions, it not only makes it easier to open the manhole cover, but also makes it easy to manufacture and assemble by simplifying the structure of the lock into a single piece, and allows you to expect accuracy in opening and closing operations.

Figure 1: Perspective view of a manhole with a locking device of the present invention installed
Figure 2: Bottom perspective view of Figure 1
Figure 3: Bottom configuration diagram of Figure 1
Figure 4: Perspective view of the manhole cover of the present invention
Figure 5: Bottom perspective view of Figure 4
Figure 6: A partial exploded perspective view of the locking device installed on the manhole cover of the present invention
Figure 7: Diagram of a part of the lock socket cut in the state of Figure 6
Figure 8: Diagram of the locking hole inserted into the locking hole socket in the state of Figure 6
Figure 9: Diagram of a state in which the lock is coupled to the lock socket by rotating the lock in the state of Figure 8

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

Figures 1 to 5 are diagrams showing the configuration of the manhole 10 and the manhole cover 30 with the locking device installed, and Figures 6 to 9 show the locking hole 60 constituting the locking device formed on the bottom of the manhole cover 30. The process of assembling the locking socket 80 is shown.

The locking device of the present invention is installed at equal intervals on three inner bottom surfaces of the main body 31 of the manhole cover 30, and a diaphragm 33 is formed in the center of the inner bottom surface of the manhole cover 30, and the diaphragm 33 and the border ( 35) is connected with a reinforcing piece 32 to enhance durability, and the diaphragm 33 has three through holes 34 opened, and a locking device 40 is installed at the position where the through holes 34 are opened. .

The locking device 40 is composed of a locking socket 50 integrally molded on the bottom of the manhole cover 30, and an integrated locking socket 60 elastically assembled to the locking socket 50.

The locking socket 50 forms a circular storage compartment 51 open on both sides on the inner surface of the square-shaped main body 59, and the inside of the circular storage compartment 51 is opened through a cut portion 52.

A fitting cutting part 53 is formed on one side of the main body 59 based on the cut part 52, and the fitting cutting part 53 is connected to a guide groove 54 located at the bottom of the circular storage room 51. , the guide groove 54 is provided with a locking protrusion 55.

On one side of the circular storage compartment (51) formed in the locking socket (50), that is, on the edge (35) of the manhole cover (30), there is an opening (56) through which the locking socket (60) can be inserted into the circular storage compartment (51). Constructs, and an open hole 57 used when opening the manhole cover 30 is formed on the upper part of the opening portion 56.

The locking hole 60 inserted into the circular storage compartment 51 of the locking ball socket 50 is configured as follows.

The locking tool 60 is composed of a circular rod body 61 with a protruding protruding protrusion 69, and a protruding protrusion 68 and a catching piece 62 are formed on one side of the circular rod body 61, and the locking piece 62 consists of an upper slope 66 and a lower slope 67.

On the other side of the locking piece (62), a spring insertion rod (63) with a smaller diameter than the circular rod body (61) is formed, and a locking jaw (64) is formed between the circular rod body (61) and the spring insertion rod (63), and the spring insertion rod (61) is formed. A square portion 65 is formed at the end of the rod 63.

The means for elastically installing the locking device 60 to the locking device socket 50 is as follows.

That is, as shown in FIG. 6, the locking protrusion 66 formed on the circular rod body 61 of the lock 60 is positioned in the cutout 52 formed on the lock socket 50, and then the spring insertion rod 63 ), insert the spring 70 into the spring 70 so that the spring 70 is caught on the locking jaw 64.

In the above state, when the locking hole 60 is inserted into the circular storage chamber 51 of the locking hole socket 50 through the opening 56 formed on the edge 35 of the manhole cover 30, the circular rod body 61 is inserted into the locking hole 60. The protruding locking protrusion 69 moves through the cutout 52 of the lock socket 50, and thus the lock 60 moves into the circular storage compartment 51 while compressing the spring 70. .

At this time, the lock 60 is pushed into the circular storage compartment 51 of the lock socket 50 while compressing the spring 70 using a separate pressurizing tool.

The locking hole 60 enters the circular storage compartment 51 while compressing the spring 70, and the locking protrusion 69 formed on the locking ball 60 is located in the insertion cutting portion 53 of the locking ball socket 50. When this is done, the movement of the locking tool 60 stops.

At this time, the square portion 65 formed at the end of the spring insertion rod 63 of the locking device 60 passes through the through hole 34 formed in the partition 33 as shown in FIG. 8 and protrudes outward.

In the above state, when the tool is inserted into the square portion 65 that penetrates the through hole 34 of the diaphragm 33 and then rotated 180° in the counterclockwise direction, the circular rod body 61 of the locking hole 60 is formed. The locking protrusion 69 rotates through the insertion cutting part 53 formed on the inner surface of the circular storage compartment 51 and is positioned in the guide groove 54 located on the floor.

When the locking protrusion 69 of the circular rod body 61 is located in the guide groove 54, the locking member 60 is pushed outward by the elastic force of the spring 70, and the locking protrusion 69 becomes a locking protrusion ( 55) and the movement is stopped, and at the same time, the catching piece 62 is located in the opening 56 formed on the edge 35 of the manhole cover 30, as shown in FIG. 9.

Therefore, the lock 60 is assembled in the circular storage compartment 51 of the lock socket 50 formed on the inner bottom of the manhole cover 30 so that it can move back and forth while being supported by the spring 70, and is prevented from leaving.

The locking device of the manhole cover 30 configured as described above operates as follows.

That is, when the manhole cover 30 is placed on the pedestal 20, the locking piece 62 of the locking hole 60 located below the rim 35 of the main body 31, that is, the lower slope 67, is attached to the pedestal 20. It is located at the end of the locking protrusion 21, and when a load is applied to the manhole cover 30 in the above state, the locking hole 60 supported by the spring 70 is pushed in the direction of the arrow A, and the locking piece ( 62) passes over the locking protrusion 21 of the pedestal 20, and the upper inclined surface 66 of the locking piece 62 is caught by the locking protrusion 21 as shown in FIG. 2 to be locked.

As described above, the manhole cover 30 coupled to the pedestal 20 is locked by the locking device 40 installed at equal intervals in three locations, so that rattling or noise of the manhole cover 30 during use is prevented. This is no different from the previously registered patent (No. 10-2263386).

The manhole cover locking device 40 of the present invention simplifies the configuration of the locking device 60 inserted into the locking device socket 50 and allows easy manufacturing and assembly.

In other words, the manhole cover locking device of the present invention is very simple in construction because it consists of three components: a lock 60, a spring 70, and a lock socket 50 that accommodates it.

In addition, during assembly, the spring (70) is inserted into the spring insertion rod (63) formed in the locking hole (60) so that the spring (70) is caught on the locking protrusion (64) and stopped, and then the opening of the manhole cover (30) is stopped. The locking hole 60 is inserted into the circular compartment 51 of the locking socket 50 through (56), so that the square portion 65 formed at the end of the spring insertion rod 63 is inserted into the through hole 34 of the diaphragm 33. ) When positioned at the front, the tip of the spring 70 is caught by the diaphragm 50 and the movement of the lock 60 is stopped.

In the above-described state, when the locking member 60 is forcibly pushed into the circular receiving chamber 51 of the locking socket 50 using a tool, the spring 70 is compressed and the locking member 60 is moved into the circular receiving chamber 51. ) enters the inside, and the catching protrusion 69 formed on the circular rod body 61 is located in the insertion cutting part 53, and at the same time, the square part 65 passes through the through hole 34 of the diaphragm 33 and is exposed to the outside. do.

At the same time, when the tool is inserted into the square portion 65 exposed to the outside of the diaphragm 33 and the locking tool 60 is rotated counterclockwise, the stopping protrusion 69 of the circular rod body 61 is opened in the circular storage compartment ( When located in the guide groove 54 while moving along the insertion cutting portion 53 of 51), the locking member 60 is pushed outward by the elastic force of the spring 70 and the locking protrusion 69 is caught. By stopping the movement of the lock 60 by hanging on the jaw 55, the spring 70 and the lock 60 can be easily installed in the circular storage chamber 51 of the lock socket 50. .

When you want to open the manhole cover 30, use a tool such as a lever, insert it into the protruding jaw 68 of the stopping piece 62 through the opening hole 36 of the manhole cover 30, and then press the lever, The lever is supported on the upper part of the stand to lift the manhole cover (30), and at this time, the locking hole (60) is pushed in the direction of the arrow (A) by the upper inclined surface (66) of the stopping piece (62), thereby lifting the manhole cover (30). is opened.

At this time, the locks (60) located in the remaining two places are also pushed in the direction of the arrow (A) by the upper inclined surface (66), thereby opening the manhole cover (30) and entering the circular storage compartment (51) of the lock socket (50). The inserted locking hole 60 is rotatable at a certain angle and rotates, thereby allowing smooth opening of the manhole cover 30.

In the above, the forward and backward movement and rotation of the locking device 60 at a certain angle are determined by the length and width of the guide groove 54 formed in the circular storage compartment 51, and the locking protrusion (60) protrudes from the circular rod body 61 of the locking device 60. Because it is longer and larger than the length and width of 69), forward and backward movement and left and right rotation are possible.

As described above, the manhole cover locking device 40 to be provided by the present invention not only has a simple configuration, but also includes a spring 70 and a locking hole 60 in the circular storage compartment 51 of the locking socket 50. Assembly is done quickly and easily.

(10)--Manhole (20)--Pedestal
(21)--Lap (30)--Manhole cover
(31)--Main body (32)--Reinforcement piece
(33)--Diaphragm (34)--Through hole
(35)--Border (40)--Lock
(50)--Lock socket (51)--Round storage compartment
(52)--cutting part (53)--fitting cutting part
(54)--Guide groove (55)--Latching jaw
(56)--opening part (57)--opening hole
(60)--Lock (61)--Round bar body
(62)--Hanging piece (63)--Spring insertion rod
(64)--Latching jaw (65)--square part
(66)--Upper slope (67)--Lower slope
(68)--Protrusion (69)--Hanging protrusion
(70)--Spring

Claims (2)

Lock sockets (50) consisting of cutouts (52) and circular storage compartments (51) are installed at three locations on the inner bottom of the manhole cover (30) at equal intervals, and the circular storage compartments (51) of the lock sockets (50) are installed at equal intervals. The locking device 60 is installed by inserting a locking device 60 into the round rod body 61, and the locking device 60 includes a locking piece 62, a protruding protrusion 68, and a locking protrusion 69, and the locking device 60 and In configuring the locking device of the manhole cover in which the spring 70 is elastically installed between the diaphragm 33 with the through hole 34, the locking hole 60 is installed on one side of the circular rod body 61 rather than the circular rod body 61. A spring insertion rod (63) with a small diameter is formed to form a locking protrusion (64) between the circular rod body (61) and the spring insertion rod (63), and a circular storage compartment (51) is formed in the locking socket (50). A fitting cutting part 53 is formed on one side, so that when the locking hole 60 fitted in the circular storage compartment 51 rotates, the catching protrusion 69 protruding from the circular rod body 61 follows the fitting cutting part 53. A locking device for a manhole cover, characterized in that the locking protrusion (69) can be inserted into the guide groove (54) formed in the circular storage compartment (51) by rotating it. According to claim 1, a square portion (65) is formed at the end of the spring insertion rod (63) of the locking device (60), and the locking device (60) is inserted into the locking device socket (50) to compress the spring (70). When the locking protrusion 69 of the circular rod body 61 is positioned in the insertion cutting portion 53 of the circular storage compartment 51, the square portion 65 passes through the through hole 34 of the partition plate 33 and goes outward. A locking device for a manhole cover that is made to protrude, inserts a tool into the rectangular part 65 that penetrates the through hole 34, and then rotates it so that the stopping protrusion 69 rotates along the fitting cutting part 53. .

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