JPH06264463A - Locking device of manhole iron cover - Google Patents

Abstract

PURPOSE:To provide a locking device of a manhole iron cover which has a keyhole cover of easy mounting and dismantling to prevent rainwater from entering through the keyhole, and the keyhole cover is mounted for use with a sensor, but the cover is dismantled for use with a storm drain. CONSTITUTION:An outer periphery of an iron cover 3 is fitted into the internal surface of a manhole frame 1 which has an L-shaped hook 17 protruded inside of the frame. A keyhole 5 is provided at the outer end of the iron cover 3, and a cover 8 of the cover body 9 which is connected to a plumb 11 with a shaft is fitted into the keyhole 5. The shaft of the cover body 9 is placed between a right side piece and a left side piece of the plumb 11 which is composed of the right side piece and the left side piece. A key 16 is monolithically molded with the right side piece, and a key is monolithically molded with the left, side piece, and the clockwise return of the plumb 11 is prevented by butting of a return stopper of the cover body to the butting part of the right side piece and the left side piece. The right side piece and the left side piece of the plumb 11 are put together and fitted with the other and tied tightly with a bolt 13 and a nut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the opening and closing of an iron lid having a receiving frame and an iron lid hinged to one end of a manhole. When the iron lid is closed for a dirty water pipe, the lid is inside the keyhole. It is fitted to the part to prevent rainwater from flowing into the manhole, and locks the weight key to the hook of the receiving frame to maintain the locked state. When the iron lid is opened by the burl, the engaging convex part of the burl is inserted into the key hole, and the lid is pushed by the burl to open the key hole. Remove the lock of the weight from the hook of the receiving frame and join it to the abutment part of the weight and the burr stopper with the engaging projection protruding from the tip of the burl to stop the burr of the weight and stop the manhole iron cover. On the partition
Together so that the hooking and open as it is manhole iron lid drawn at hand bar case for rainwater pipes, the lid body can be removed from the governor weight, of the governor weight at same bar to remove the lid body from the governor weight The present invention relates to a lock device for a manhole iron lid in which rotation is stopped and a key can be unlocked and detached so that the weight cannot be replaced by itself and the iron lid can be opened by a burl.

[0002]

2. Description of the Related Art In a conventional manhole iron lid locking device, when a manhole is constructed under a road, rainwater and dust enter the manhole through a keyhole of the iron lid. To prevent this defect, the seat plate (lid) is placed on the weight via rubber packing.
There is one attached. This structure requires a process and a member for mounting the packing by penetrating a screw on the weight, and the rubber is liable to change with time, and must be periodically replaced, which has a drawback of high cost. Also, if the keyhole is not covered by the lid for some purposes, that is, if rainwater is poured into the manhole through the keyhole, it is necessary to remove the rubber packing and seat plate from the weight and replace it with another member for maintenance. There was a drawback that required complicated work.

[0003]

In view of the above-mentioned drawbacks of the prior art, the present invention omits rubber packings, coupling fittings, etc., and in the case of a dirty water pipe, the lid body is pivotally and detachably mounted on a weight, Depress the abutment part of the weight with the burr stopper and integrally form the key on the weight, and for rainwater pipes, remove the lid body and use the bar engagement protrusion to prevent the weight and the burr. It is an object of the present invention to control the auxiliary portion so as to eliminate the burr of the weight so that the iron lid can be easily caused without locking the key.

[0004]

The present invention includes (a) a receiving frame 1
In the lock device of the manhole iron lid, in which the iron lid 3 is hinged at one end and the other end of the iron lid 3 is opened and closed by the burl 20 to lock and unlock, A receiving frame 1 provided with an L-shaped hook 17, and an iron lid 3 having a keyhole 5, a partition wall 6 and a recess 7 formed in order from the outside on the back surface of the other end.
(C) In the case of a sewage pipe, the abutment portions 30 and 30 'of the lid 8 and the weight 11 which are fitted into the keyhole 5 of the iron lid 3 and pushed down by the engaging projections 21 of the burls 20 are pushed back. 10
b, 10b 'are provided, and the right side piece 12 and the left side piece 1 of the weight 11 are provided.
The lid body 9 provided with the shafts 10 and 10 'that are detachably fixed to the shaft holes 10a and 10a' of 2 ', and the right side piece 12 and the left side piece 12' are (d) screw 13 and nut 13a. In the fixed weight 11, the right side piece 12 and the left side piece 12 '
In the case of a sewage pipe, shaft holes 10a and 10a 'for fixing the shafts 10 and 10' of the lid body 9 are provided, and notches 19 and 19 'for fitting the lid body 9 are provided on the inner side, and the lid body 9 is In the case of a rainwater pipe not used, when the locks of the keys 16 and 16 'engaged with the L-shaped hook 17 are unlocked, the engagement protrusion 21 of the burl 20 of the weight 11 is locked to the inner front part. Receiver 15
And 15 'and auxiliary portions 12a and 12a' are provided, and the key 1 is adapted to be engaged with and disengaged from the L-shaped hook 17 of the receiving frame 1 at the lower end portion.
6 and 16 'respectively provided with a weight 11 and (e) engaging the partition wall 6 of the iron lid 3 at the tip, and pushing down the lid 8 in the case of a sewage pipe by the burr stoppers 10b, 10b' of the lid body 9. Weight 11
The abutting parts 30, 30 'of the auxiliary parts 12a, 1'for the rainwater pipe are pressed down.
A locking device for a manhole iron lid, comprising: a burl 20 provided with an engaging projection 21 adapted to engage with 2 '.

[0005]

[Circle] An L-shaped hook 17 is provided inside the receiving frame 1. The weight 11 is hung on the back surface of the iron lid so as to rotate around the shafts 14 and 14 '. When the keyhole 5 of the iron lid 3 is closed by the lid 8, the keys 16 and 16 'are locked inside the L-shaped hook 17 and locked so that rainwater does not enter the manhole. When the lid 8 is pushed inward of the key hole 5 of the iron lid 3 with the burl 20, the weight 11 rotates counterclockwise and the keys 16 and 16 ′ are disengaged from the L-shaped hook 17, so that the lid body 9 of the lid body 9 is removed. Back bar 10b and 10
At b ′, the weight 11 is rotated counterclockwise to maintain that state. When the burl 20 is lifted up toward the front, the weight is clockwise because the burr stoppers 10b and 10b 'of the lid body 9 are engaged with the abutting portions 30 and 30' by the engaging projections 21 of the burl 20. The keys 16 and 16 ′ are not rotated and are not engaged with the L-shaped hook 17.

In order to introduce rainwater into the manhole with the keyhole 5 opened, the screw 13 is removed, the right side piece 12 and the left side piece 12 'are separated, and the shafts 10 and 10' of the lid body 9 are rotated. Removed from holes 10a and 10a ', right side piece 12 and left side piece 1
Put back 2'and tighten with screw 13. The receiving projections 15 and 15 ′ of the burl are pushed down by the engaging projections 21 of the burls 20 so that the tip ends of the engaging projections 21 are the auxiliary portions 12a of the weight 11.
The weight 11 does not rotate in the clockwise direction to prevent the weight from burring, and the keys 16 and 16 'do not engage with the L-shaped hook 17 and the bar 20 is pulled toward the front so that the iron lid 12a' is engaged. Can open three.

[0007]

Embodiments of the present invention will be described with reference to the drawings. Figure 1
Is a side view of the hole of the iron lid being blocked by the weight lid,
FIG. 2 is a side view of the weight lid with the tip of the burl pushed down, FIG. 3 is a perspective view of the weight, FIG. 4 is a perspective view of the disassembled weight, and FIG. 5 is a partially cutout burl. FIG. Reference numeral 1 is a manhole receiving frame, and 3 is an iron lid provided with an outer inclined surface 4 fitted to an inner inclined surface 2 of the receiving frame 1. The keyhole 5 for inserting the burl 20 is formed in a part of the iron lid 3, and the partition wall 6 of the keyhole 5 is formed.
Has a shape that hangs longer than the bottom side 3 a of the iron lid 3, a recess 7 is formed inside thereof, and the lower end engaging protrusion 21 of the burl 20 is formed in the recess 7. ing.

Reference numeral 8 is a lid for opening and closing the keyhole 5 of the iron lid 3.
The lid 8 is axially fixed to the weight 11 by shafts 10 and 10 ′ protruding from both sides of the lid body 9 so that the lid 8 can be detachably rotated. The governor weight 11 is right piece 12 and the left piece 1 as shown in FIG. 4
The right side piece 12 and the left side piece 1 by tying 2'from both sides
The screw 13 and the nut 13a penetrating the holes 13b and 13b 'of the 2'is tightened and fixed, and the lid body of the lid 8 is provided between the notches 19 and 19' between the right side piece 12 and the left side piece 12 '. 9 and the shafts 10 and 10 'with the right side piece 12 and the left side piece 1
The right-side piece 12 and the left-side piece 12 'are fitted with the concave-convex surfaces 12C by fitting in the shaft holes 10a and 10a' of 2 ', and the right-side piece 12 and the left-side piece 12' are fastened with the screw 13 and the nut 13a.

Reference numerals 16 and 16 'are keys which are integrally formed by bending the right side piece 12 and the left side piece 12' of the weight on the lower front surfaces in a bent hook shape. 17 is a receiving frame 1 for locking the keys 16 and 16 '.
Is an L-shaped hook projecting inside the middle part of the key, the lid 8 is used to close the keyhole 5 of the iron lid 3, and at the same time, the keys 16 and 16 'are L-shaped.
It engages with the shaped hook 17 and locks the lid 8 and thus the iron lid 3 so that it does not open from the receiving frame 1.

When the lid 8 is in the state shown in FIG. 1, the manhole is closed by the iron lid 3. Holding the burl 20, the lid 8 is pushed down by the engaging protrusion 21 at the tip thereof. Then, the weight 11 is placed above the shafts 10 and 10 ', and the supporting plate 3 of the iron lid 3
The support shafts 14a and 14a ', which are fixed to the shaft b, are pivoted counterclockwise (FIG. 2) around the support shafts 14a and 14a', and the keys 16 and 16 'are disengaged from the L-shaped hook 17 of the receiving frame 1. If you push the burl 20 further down,
The lid 8 contacts the upper surface of the L-shaped hook 17, and the engaging projection 21 of the burl 20 slides on the upper surface of the lid 8 to enter the recess 7 of the iron lid and engage with it. This time the bar 20 is lifted up and the iron lid 3
Is opened. Since the burr stoppers 10b and 10b 'of the lid body 9 are locked to the abutting portions 30 and 30' of the weight 11, the weight 11 does not rotate to the left (clockwise). Iron lid 3
When the key is lifted considerably, the tip ends of the keys 16 and 16 'are located on the right side of the L-shaped hook 17 of the receiving frame 1 and do not engage with the left side recess portion 18 of the L-shaped hook 17, so that the iron lid 3 is It can be fully opened with the burl 20.

The above description is for a dirty water pipe, and the lid 8 of the lid body 9 is fitted into the keyhole 5 of the iron lid 3, but for the rainwater pipe, that is, the keyhole of the iron lid 3. If rainwater is allowed to flow into the manhole without blocking 5, screw 13
Is loosened and the right side piece 12 and the left side piece 12 'of the weight 11 are disassembled and the lid body 9 is removed from the weight. Then, the engaging projections 21 of the burl 20 push down the receiving parts 15, 15 'of the burl.
Since the back surface of the engaging convex portion 21 of the burl 20 is locked to the right side piece 12 of the weight 11 and the auxiliary portions 12a, 12a 'of the left side piece 12', the weight does not rotate clockwise. When the burl 20 is further pulled up, the engaging convex portion 21 engages with the anti-deburring portions 12a and 12a 'of the weight to prevent the weight 11 from rotating in the clockwise direction. Therefore, the iron lid 3 can be subsequently opened.

When the lid body 9 is incorporated into the weight 11, the burl 20 is hooked on the partition wall 6 of the iron lid 3 to fit the iron lid 3 into the receiving frame 1 to close the manhole hole. When raised in the direction of the broken line arrow opposite to the direction of the solid line arrow, the engaging protrusion 21 is disengaged from the partition wall 6, so that the burl 20 is directly attached to the key hole 5 of the iron lid.
Pull out more. Then, the weight 11 automatically rotates to the left (clockwise) (FIG. 2), the upper surface of the lid 8 returns to the same height as the upper surface of the iron lid 3, and the keys 16 and 16 ′ are L-shaped of the receiving frame 1. Hook 17
The iron lid is locked with a key by engaging with the edge portion 18 of the L-shaped hook 17 beyond.

[0013]

As described above, according to the present invention, when the lid main body is applied to the iron lid, when the iron lid is closed, the upper surface of the lid has a height substantially matching the upper surface of the iron lid. The lid's keyhole is closed to prevent rainwater from entering the receiving frame. Further, if the lid body is used by removing it from the iron lid, the keyhole of the iron lid communicates the inside and outside of the manhole, so that rainwater that has poured down on the road can be introduced into the receiving frame through the keyhole. Also, when the lid body is applied to the iron lid, the burr stopper of the lid body operated by the tip engaging protrusion of the burl pushes down the abutment part of the weight to rotate the weight, Can be unlocked by locking the key on the upper surface of the L-shaped hook of the receiving frame and unlocking the key from the L-shaped hook of the receiving frame, and the weight is screwed by tying the right side piece and the left side piece together The lid body can be pivotally attached to the weight by simply fitting the shafts protruding on both sides of the weight into the shaft holes of the weight. Also, when the lid main body is removed from the weight, the engagement protrusion of the burl abuts the bale receiving part of the weight to the burr prevention auxiliary part of the weight to stop the weight from rotating clockwise. It is possible to prevent the lock of the weight from being hooked on the hook portion of the receiving frame until the bar is removed from the iron lid, and the iron lid can be easily and quickly applied to the receiving frame. Further, by providing a burr stopper around the shaft portion of the lid main body that is abutted against the abutment portion of the weight, the structure for preventing the weight from rotating clockwise does not require any complicated member. It is simple and the rotation of the weight can be stopped by the lid body, so that the opening operation of the iron lid can be performed quickly and reliably.

[Brief description of drawings]

FIG. 1 is a side view in which a part of a state in which a hole of an iron lid is covered with a weight lid is cut away.

FIG. 2 is a side view in which a part of a state in which a lid of a weight is pushed down by a tip portion of a burr is cut away.

FIG. 3 is a perspective view of a weight.

FIG. 4 is a perspective view of an exploded weight.

FIG. 5 is a perspective view of the burl shown with a part thereof cut away;

[Explanation of symbols]

 1 Receiving frame 2 Inner sloping surface of receiving frame 3 Iron lid 4 Outer sloping surface of iron lid 5 Iron lid keyhole 6 Iron lid partition wall 7 Iron lid recess 8 Lid 9 Lid body 10, 10 'Lid body shaft 10a, 10a 'Shaft hole 10b, 10b' Bale stop receiving 11 Weight 12 Right side piece of weight 12 'Left side piece of weight 12a, 12a' Anti-deburring auxiliary portion 14a Spindle on right side of weight 14a 'Weight Left side support shaft 15,15 'Bar receiving part 16,16' Key 17 L-shaped hook 18 L-shaped part recess 19 Right side notch 19 'Left side notch 20 bar 21 Bar engagement Mating convex part 30, 30 'Abutting part

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[Procedure amendment]

[Submission date] March 15, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction content]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the opening and closing of an iron lid having a receiving frame and an iron lid hinged to one end of a manhole. When the iron lid is closed for a dirty water pipe, the lid is inside the keyhole. It is fitted to the part to prevent rainwater from flowing into the manhole, and locks the weight key to the hook of the receiving frame to maintain the locked state. When the iron lid is opened by the burl, the engaging convex part of the burl is inserted into the key hole, and the lid is pushed by the burl to open the key hole. Remove the lock of the weight from the hook of the receiving frame and join the abutment part of the weight and the burr stopper at the engaging convex part protruding from the tip of the burl to stop the burr of the weight and stop the manhole iron cover Hook it to the bulkhead and pull the burr as it is to open the manhole iron lid.For rainwater pipes, the lid body can be removed from the weight, and even if the lid body is removed from the weight, the same burl is used. The present invention relates to a lock device for a manhole iron lid in which the rotation of the weight can be stopped and the key can be unlocked, and the weight cannot be replaced by itself so that the iron lid can be opened by a burl.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

The above description is for a dirty water pipe, and the lid 8 of the lid body 9 is fitted into the keyhole 5 of the iron lid 3, but for the rainwater pipe, that is, the keyhole of the iron lid 3. If rainwater is allowed to flow into the manhole without blocking 5, screw 13
Is loosened and the right side piece 12 and the left side piece 12 'of the weight 11 are disassembled and the lid body 9 is removed from the weight. Then, the engaging projections 21 of the burl 20 push down the receiving parts 15, 15 'of the burl. Then, the back surface of the engaging protrusion 21 of the burl 20 has a weight 11
Of the right side piece 12 and the left side piece 12 'of the auxiliary parts 12a, 12a'
The weight does not rotate clockwise because it is locked in the.
When the pearl 20 is further pulled up, the engaging convex portion 21 engages with the anti-deburring portions 12a and 12a 'of the weight to prevent the weight 11 from rotating in the clockwise direction. Therefore, the iron lid 3 can be subsequently opened. ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 16, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

Reference numeral 8 is a lid for opening and closing the keyhole 5 of the iron lid 3.
The lid 8 is axially fixed to the weight 11 by shafts 10 and 10 ′ protruding from both sides of the lid body 9 so that the lid 8 can be detachably rotated. The weight 11 has a right side piece 12 and a left side piece 1 as shown in FIG.
The right side piece 12 and the left side piece 1 by tying 2'from both sides
The screw 13 and the nut 13a penetrating the holes 13b and 13b 'of the 2'is tightened and fixed, and the lid body of the lid 8 is provided between the notches 19 and 19' between the right side piece 12 and the left side piece 12 '. 9 and the shafts 10 and 10 'with the right side piece 12 and the left side piece 1
The right-side piece 12 and the left-side piece 12 'are fitted with the concave-convex surfaces 12C by fitting in the shaft holes 10a and 10a' of 2 ', and the right-side piece 12 and the left-side piece 12' are fastened with the screw 13 and the nut 13a.

Claims (1)

[Claims] (A) A lock device for a manhole iron lid, wherein an iron lid 3 is hinged to a receiving frame 1 at one end, and the other end of the iron lid 3 is opened and closed by a burl 20 to lock the manhole. In (b), the receiving frame 1 provided with the L-shaped hook 17 on the inner side, the iron hole 3 having the keyhole 5, the partition wall 6 and the recess 7 formed in order from the outer side on the back surface of the other side end, and (c) the wastewater pipe If the iron lid 3
Batter stoppers 10b and 10b 'are provided to push down the abutting portions 30 and 30' of the lid 8 and the weight 11 which are fitted in the keyhole 5 of the bar 20 and are pushed down by the engaging convex portion 21 of the burl 20.
Of the right side piece 12 and the left side piece 12 'of the right side piece 12 by means of the lid body 9 provided with the shafts 10 and 10' which are detachably fixed to the shaft holes 10a and 10a ', and (d) the screw 13 and the nut 13a. And a left side piece 12 ', a weight 11 is formed by fixing the right side piece 12 and the left side piece 12' to the lid body 9 in the case of a waste water pipe.
In the case of a rainwater pipe which does not use the lid body 9, the shaft holes 10a and 10a ′ for fixing the shafts 10 and 10 ′ are provided, and the notches 19 and 19 ′ for fitting the lid body 9 are provided inside. L
When the locks of the keys 16 and 16 'engaged with the hook 17 are released, the receiving portions 15 and 15' and the auxiliary portion 12a for locking the engaging projections 21 of the burls 20 of the weight 11 on the inner front side are provided. 1
2a 'is provided, and a weight 11 provided with a key 16 and 16', respectively, which is provided at the lower end portion so as to be engaged with and disengaged from the L-shaped hook 17 of the receiving frame 1, and (e) engaged with the partition wall 6 of the iron lid 3 at the tip. In the case of a sewage pipe, the lid 8 is pushed down and the bail stopper 10 of the lid body 9 is attached.
b, 10b 'pushes down the abutting portions 30, 30' of the weight 11, and in the case of a rainwater pipe, pushes down the receiving portions 15, 15 'to engage the auxiliary portions 12a, 12'. A manhole iron lid locking device comprising: a burl 20 provided with a portion 21;