JP2001227052A - Catch basin having lid locking mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a catch basin with a lid locking mechanism for preventing a lid of the catch basin from jumping by shock of a passing vehicle or the like passing on the top face of the lid, and to simply keep the locked state of the lid locking mechanism and unlock the mechanism. SOLUTION: The lid is locked by a locking member 10 provided in a catch basin cover 3 and a locking hole 11 provided in a frame receiving part 2. The locking member 10 is formed by a locking shaft 12 engaged and disengaged with and from the locking hole 11 and a slide inhibiting piece 13 fixed to the lower surface. The locking shaft 12 is journalled to a peripheral frame 3 of the catch basin lid 3 side and a bearing frame 14 to slide in the reciprocating manner and rotate. The catch basin lid 3 is provided with a stopper 17 for catching the slide inhibiting piece 13 with the locking shaft 12 locked in the locking hole 11. The locking member 10 can be unlocked only when the slide inhibiting piece 13 is jumped and turned, whereby locking state can be surely kept.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage basin having a basin lid, which is characterized by a lid lock mechanism for preventing the basin from coming off.

[0002]

2. Description of the Related Art Many types of basins of this type can be removed from the receiving frame of the drainage basin for cleaning the inside of the drainage basin.
The closed state is maintained only by the weight of the square lid.
Therefore, when a vehicle such as a truck passes over the upper surface of the hood lid on an expressway or the like, the hood lid may be disengaged from the receiving frame portion and jumped off. There have been reports of secondary accidents being triggered by the mashed lid.

For example, as disclosed in Japanese Patent Application Laid-Open No. 9-228461, most of the sash is connected to a receiving frame portion through a chain for preventing theft, and this chain also prevents the sash from jumping. It has helped. However, anti-theft chains
Since the length of the mash lid is set so as to be completely removed from the receiving frame portion, it is not possible to prevent the mash lid from coming off the receiving frame portion, and there is a concern that an accident may still occur due to the mash lid jumping up.

However, if the hood lid loaded in the receiving frame portion is fixed with bolts or the like, it is possible to reliably prevent the hood lid from jumping up. However, in this case, a bolt is required every time the drainage basin is cleaned. And the like must be tightened and loosened, which is troublesome. When the traffic volume is large, there is a possibility that bolts or the like may loosen and come off due to vibration of the mash cover or the road surface.

[0005] An object of the present invention is to lock the cell lid so that it cannot be removed from the receiving frame so that it cannot be detached. When necessary, the locked state can be released by a very simple operation, and the cell lid can be easily removed from the receiving frame. It is an object of the present invention to provide a drainage basin having a lid locking mechanism that is easy to use.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent a case lid from coming out of a receiving frame portion even when the case lid is repeatedly subjected to an external force and rattle, so that an operator can give a clear intention. An object of the present invention is to provide a highly reliable drainage basin with a lid locking mechanism that can keep the basin lid locked unless a lock shaft is unlocked.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drainage system which has a simple structure and requires only a small manufacturing cost, so that the overall cost of replacing a hood with a lid locking mechanism with an existing hood can be significantly reduced. To provide a basin.

[0008]

As shown in FIGS. 2 and 3, a drainage basin according to the present invention comprises a basin body 1, a basin lid 3 fitted inside a receiving frame 2 of the basin body 1, and a receiving frame 2 And a lid lock mechanism provided between the lid and the lid. The lid lock mechanism is
As shown in FIG. 1, a lock body 10 having a slide prevention piece 13 protruding from a peripheral surface of a lock shaft 12 pivotally supported by the basin cover 3,
Lock hole 11 provided in receiving frame 2 corresponding to lock shaft 12
And a stopper 17 provided on the side of the lid 3 for preventing the slide blocking piece 13 from moving in the unlocking direction. The lock body 10 has its lock shaft 12 guided and supported by the box lid 3 so as to be reciprocally slidable so that it can be engaged with and disengaged from the lock hole 11, and the slide preventing piece 13 rotates together with the lock shaft 12 and the stopper 17 Can be disengaged from

The lock shaft 12 is reciprocally slidable and rotatably supported by a peripheral frame 5 of the mesh lid 3 formed in a lattice shape and a bearing frame 14 arranged in parallel with the peripheral frame 5. . A stopper 17 is provided on the basin lid 3 so as to face the lower half of the peripheral surface of the lock shaft 12 and receive the slide blocking piece 13. In the unlocked state where the lock shaft 12 is pulled out from the lock hole 11, the slide prevention piece 13 is received by the bearing frame 14. A plurality of lock bodies 10 and lock holes 11 can be provided on respective opposing sides of the receiving frame 2 and the peripheral frame 5 of the sash 3.

[0010]

In the state in which the box lid 3 is loaded in the receiving frame 2, the lock body 10 has one end of the lock shaft 12 engaged with the lock hole 11, so that the box lid 3 comes out of the receiving frame 2. Block. The slide blocking piece 13 faces the stopper 17 and prevents the lock shaft 12 from sliding out of the lock hole 11. To release the lock of the lock body 10, the slide prevention piece 13 is rotated together with the lock shaft 12 so that the slide prevention piece 13 and the stopper 1 are moved.
7 is released, and the lock shaft 1 is kept in that state.
2 is operated to slide out one end of the lock shaft 12 from the lock hole 11 to release the connection state between the cell lid 3 and the receiving frame 2.

As described above, according to the lid lock mechanism that locks and holds the lock body 10 with the slide preventing piece 13 and the stopper 17, even when a truck or the like passes over the upper surface of the cell lid 3 at a high speed, the impact is prevented. The lock body 10 is prevented from sliding and displacing in the unlocking direction in response to this, so that the sash 3 is reliably prevented from coming off the receiving frame 2. Further, even in the case where the above-mentioned impact repeatedly acts, the lock shaft 12
By maintaining the engagement state between the lock 3 and the lock hole 11, the splashing of the lid 3 can be eliminated. At the time of cleaning, after rotating the slide blocking piece 13 and then pulling out the lock shaft 12 from the lock hole 11, the cell lid 3 can be removed from the receiving frame portion 2. For example, when the cell lid is fastened and fixed with bolts, In comparison with this, removal of the lid 3 and fixation of the lock after reloading can be performed quickly with less labor.

A lock shaft 12 is provided between the peripheral frame 5 and the bearing frame 14.
And a stopper 17 is provided on the lower half circumferential surface of the lock shaft 12.
According to the lid lock mechanism provided with the lock, the lock shaft 12 can be supported by the peripheral frame 5 and the bearing frame 14 so that the lock shaft 12 can be reciprocally slid in a stable state and can be rotated. The lock body 10 in the locked state is stable in a posture in which the blocking piece 13 hangs down from the lower surface of the lock shaft 12 and projects due to the action of the eccentric load of the slide blocking piece 13. Therefore, the lock shaft 1
If the stopper 17 is provided on the lower half peripheral surface side of the lock 2, the lock body 10 will return to its previous position by its own weight even if the cover 3 and the lock body 10 move freely due to an external impact.
Continue to maintain the locked state. That is, in order to perform the unlocking operation of the lock body 10, it is necessary for the operator to rotate the lock shaft 12 and perform the sliding operation with a clear will.
There is no room for the lock body 10 to accidentally switch to the unlocked state, and the reliability of the lid lock mechanism can be improved. Also,
Since the slide blocking piece 13 is received by the bearing frame 14 to prevent the lock shaft 12 from being slid more than necessary, the lock body 10 is locked after the mesh lid 3 is reloaded into the receiving frame 2. The operation for switching to the above operation can be performed easily and quickly, and the labor for opening and closing the cell lid 3 can be reduced correspondingly, and the efficiency of maintenance work such as cleaning work can be improved.

If the lock body 10 and the lock hole 11 are provided at a plurality of locations on the opposite sides of the receiving frame portion 2 and the peripheral frame 5, for example, the weight of the vehicle body exceeding the allowable load acts on the cell lid 3. Under abnormal circumstances, such as, one lock body 1
Even if 0 is deformed or damaged,
The other lock body 10 can prevent the lid 3 from jumping.
Alternatively, the load resistance of the lid lock mechanism is increased by the use of the plurality of lock bodies 10, the reliability of the mechanism is improved, and the occurrence of a secondary accident due to the jumping of the lid 3 can be reliably prevented. .

[0014]

1 to 6 show a drainage basin according to the present invention.
1 shows an embodiment applied to a highway, especially an elevated road. In FIG. 2, a drainage basin is a cast iron basin body 1 buried in a reinforced concrete subgrade, and a receiving frame 2 at an upper end thereof.
And a lid 3 loaded from above. The receiving frame portion 2 is formed in a horizontally long rectangular shape in plan view, and a cell receiving step portion 2a for receiving the cell lid 3 is provided only on a short side thereof. Reference numeral 4 denotes a chain provided for theft prevention, one end of which is fixed to the cell body 1 and the other end of which is fixed to the cell lid 3.

In FIG. 3, a skirt lid 3 has the same shape as the receiving frame portion 2 and has a slightly smaller vertical and horizontal dimension, and is arranged in parallel with the long side of the peripheral frame 5. A group of load-bearing bars 6 welded to the sides, arranged parallel to the short sides of the peripheral frame 5, and welded to the respective upper ends of the group of load-bearing bars 6 and the long sides of the peripheral frame 5; It is formed in a lattice shape with two crossbars 7 consisting of a square axis or a twist bar.
As shown in FIG. 1, the vertical width of the peripheral frame 5 is smaller than the vertical width of the load-bearing bar 6. 2
a, and bears most of the external weight acting on the box lid 3 by the load bearing bar 6.

When a truck, a bus, or the like passes through the upper surface of the box lid 3, in order to prevent the box lid 3 from jumping out of the receiving frame 2, there is a gap between the box lid 3 and both short sides of the peripheral frame 5. Two sets of left and right lid lock mechanisms are provided.

In FIG. 1, the lid lock mechanism comprises a lock body 10 provided on the side of the box lid 3 and a lock hole 11 provided in the receiving frame 2. The lock body 10 includes a lock shaft 12 made of a round steel bar, and a horizontally long rectangular slide blocking piece 13 welded to a part of the peripheral surface thereof. Both ends of the lock shaft 12 are supported by the peripheral frame 5 and the bearing frame 14 arranged in parallel with the peripheral frame 5. Thus, the lock body 10 can reciprocally slide in a direction in which the outer end of the lock shaft 12 is engaged with and disengaged from the lock hole 11, and is supported such that the slide prevention piece 13 and the lock shaft 12 can rotate around the shaft center. . Reference numeral 15 denotes a bearing hole for the lock shaft 12 provided in each of the frames 5 and 14.

Lock body 1 engaged with lock hole 11
0, for example, receiving the vibration of the mesh lid 3 or the road surface,
1 is fixed to the lock shaft 12 so as to prevent the slide piece 13 from gradually coming out of the lock piece 12.
3 is received by a stopper 17 welded between the bearing bars 6,6. 4 and 5, the stopper 17 is provided facing the lower half peripheral surface of the lock shaft 12, and the lock shaft 1
A semicircular relief recess 18 is formed at a portion that intersects 2.
The position of the stopper 17 is such that the distance between the peripheral frame 5 and the stopper 17 is slightly larger than the reference dimension (1 mm on one side) based on the longitudinal dimension of the slide blocking piece 13.
Set to the value obtained by adding. As a result, after the outer end of the lock shaft 12 is inserted into the lock hole 11 and engaged, the slide block 13 is dropped between the peripheral frame 5 and the stopper 17 and rocks, whereby the lock body 10 comes out of the lock hole 11. It can be prevented from sliding to the side.

To unlock the lock body 10,
As shown by the imaginary line in FIG. 5, the slide blocking piece 13 is flipped up and rotated together with the lock shaft 12, and the slide blocking piece 1 is rotated.
The protrusion of No. 3 is positioned above the upper end surface of the stopper 17, and the lock body 10 is slid in the inward direction (toward the bearing frame 14) away from the lock hole 11 in this state. Also during this lock release operation, the inner end surface of the slide prevention piece 13 contacts the bearing frame 14 to prevent the lock body 10 from being excessively slid. That is, in a state where the outer end of the lock shaft 12 is completely pulled out of the lock hole 11, the slide prevention piece 13 is brought into contact with the bearing frame 14 as shown in FIG. Is prevented from falling off from the bearing hole 15 of the peripheral frame 5, and the lock operation of the lock body 10 when the hood lid 3 is remounted after cleaning is simplified.

As described above, the lock body 10 rotates the slide blocking piece 13 about the lock shaft 12 to engage the stopper 17 with the slide blocking piece 13 or release the engaged state. In order to enable this pivoting operation, one load-bearing bar 6 is cut at a portion facing the lock body 10 as shown in FIG.
Are arranged orthogonal to the load bearing bar 6, and an operation opening 20 for the lock body 10 is secured between the bearing frame 14 and the peripheral frame 5.
The joints P between the both ends of the bearing frame 14 and the cut load-bearing bar 6 are welded. The stopper 17 is formed to have the same length as the bearing frame 14, and is welded to the bearing bars 6.6 so that only both ends thereof are parallel to the bearing frame 14.

The earth and sand and dust flowing along the road surface are apt to accumulate in the inside of the basin body 1, especially in the lid receiving step 2a, and weeds grow if left unattended. In order to remove such deposits, the inside of the cell body 1 is periodically cleaned. At the time of cleaning, the pair of lock bodies 10 are unlocked in the same manner as described above, and the cell lid 3 is completely removed from the receiving frame 2.
Thereafter, the sediment is removed by suction under the action of vacuum pressure.
After reloading, the lock body 10 is re-engaged with the lock hole 11. At this time, the lock body 10 keeps the unlocking posture since the slide preventing piece 13 is received by the upper surface of the stopper 17, so that the lock body 10 can be locked immediately after both the lids 3 are loaded.

The above embodiment can be partially modified as follows. In FIG. 7, the slide blocking piece 13 is shown.
A notch 21 is provided in the
In this state, the stopper 17 on the side of the lid 3 enters the notch 21 to prevent the lock body 10 from sliding toward the unlocking side.

In FIG. 8, the bearing frame 14 also serves as the stopper 17. Specifically, when the lock body 10 is locked in the lock hole 11, the inner end of the slide prevention piece 13 is adjacently opposed to the bearing frame 14. At the time of unlocking, after the slide blocking piece 13 is rotated upward, the inner end thereof is formed in the slide groove 22 formed continuously with the bearing hole 15.
The lock body 10 can be slid in the lock release direction. In this case, the slide blocking piece 1
The stepped portion 23 provided on the shaft 3 contacts the bearing frame 14 to regulate the sliding amount in the unlocking direction, thereby preventing the outer end of the lock shaft 12 from falling out of the bearing hole 15 of the peripheral frame 5. .

In addition to the above, at least one lid lock mechanism may be provided, and when the size of the drainage basin is large, three or more lid lock mechanisms can be provided. The basin body 1 may be made of concrete. In this case, the receiving frame 2 may be formed of a metal frame, and the lock hole 11 may be provided in the frame peripheral wall. The basin lid 3 does not necessarily need to be assembled in a lattice shape, but rainwater flowing along the road surface can flow down into the basin, and can be engaged with and disengaged from the lock hole 11 by operating the lock body 10 from the lid outer surface. It needs to be a structure. The drainage basin may also serve as a catchment basin, or may be the catchment basin itself. In the above embodiment, the operation opening 20 is secured by partially cutting the load bearing bar 6, but the drainage basin of the present invention disposes the lock body 10 between the load bearing bars 6 without cutting the load bearing bar 6. So that it can be factory produced.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA in FIG. 4 showing a lid lock mechanism.

FIG. 2 is a vertical sectional front view of a drainage basin.

FIG. 3 is a plan view of a drainage basin.

FIG. 4 is a plan view of a lid lock mechanism.

FIG. 5 is a sectional view taken along line BB in FIG. 4;

FIG. 6 is a plan view of the lid lock mechanism in an unlocked state.

FIG. 7 is a longitudinal sectional front view showing another embodiment of the lid lock mechanism.

FIG. 8 is a perspective view showing still another different embodiment of the lid lock mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Masu main body 2 Receiving frame part 3 Masu lid 10 Lock body 11 Lock hole 12 Lock shaft 13 Slide prevention piece 17 Stopper

Continued on the front page (72) Inventor Yoshimasa Sawato 4-3-1 Kutaro-cho, Chuo-ku, Osaka City, Osaka Prefecture Inside the Hanshin Expressway Public Corporation (72) Inventor Nobuyuki Horiuchi 1-1-10-1, Yurakucho, Chiyoda-ku, Tokyo F-term (reference) in Bal Kogyo Co., Ltd. 2D047 BB02 BB03 2D063 DA12

Claims (3)

[Claims] 1. A drainage basin having a basin body 1, a basin lid 3 to be fitted in a receiving frame 2 of the basin body 1, and a lid locking mechanism provided between the receiving frame part 2 and the basin lid 3. The lid lock mechanism includes a lock body 10 having a slide blocking piece 13 protruding from a peripheral surface of a lock shaft 12 that is supported by the box lid 3.
Lock hole 11 provided in receiving frame 2 corresponding to lock shaft 12
And a stopper 17 provided on the side of the lid 3 to prevent the slide blocking piece 13 from moving in the unlocking direction. The lock body 10 guides the lock shaft 12 so that the lock shaft 12 can slide back and forth on the lid 3. A lid locking mechanism which is supported and can be disengaged from and locked to the lock hole (11), and wherein the slide preventing piece (13) rotates together with the lock shaft (12) and can be disengaged from the stopper (17). Drain basin with. 2. A lock frame 12 comprising: a peripheral frame 5 of a mesh lid 3 formed in a lattice shape; and a bearing frame 14 disposed in parallel with the peripheral frame 5.
And a stopper 17 is provided on the lid 3 so as to face the lower half of the peripheral surface of the lock shaft 12 and receive the slide blocking piece 13. The drainage basin provided with the lid locking mechanism according to claim 1, wherein the slide blocking piece (13) is received by the bearing frame (14) in the unlocked state where the lock shaft (12) is pulled out from the lock hole (11). 3. A lid lock mechanism according to claim 1, wherein a plurality of lock bodies and a plurality of lock holes are provided on respective opposite side portions of the receiving frame portion and the peripheral frame of the box lid. Drain basin with.