JP3396668B2 - Connection structure between lid and receiving frame - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a lid and a receiving frame that covers openings of underground structures such as gutters, water collecting basins, manholes, and electric wire common grooves.

[0002]

2. Description of the Related Art A hinge may be provided between a lid and a receiving frame of this type. The lid and the receiving frame, which are connected in advance by a hinge, often obstruct the construction when the lid and the receiving frame are installed in the opening. For this reason, for example, as described in Japanese Utility Model Publication No. 3-15671, there is a configuration in which, after the receiving frame is installed, a state in which the lid and the hinge hardware are connected by the connecting shaft is connected to the receiving frame. In such a configuration, the receiving frame can be installed in a state where the lid and the hinge hardware are separated from the receiving frame, which is convenient for the installation work of the receiving frame.

[0003]

However, in the conventional connection between the lid and the receiving frame, it is necessary to attach the hinge hardware to the lid in advance and then connect the hinge to the receiving frame. Therefore, the connecting work is inevitable. It is necessary to lift up.
Therefore, there is a problem in that there is an operation for connecting the hinge metal member to the receiving frame with the operator lifting the heavy lid. In other words, even if the lid is heavy enough to be lifted by one operator, the lid is held with one hand and the hinge hardware is guided with the other hand, which causes a problem of poor workability. . The present invention aims to solve this problem.

[0004]

Means for Solving the Problems According to the means of the present invention, a receiving frame which forms an opening, a lid which is supported by the receiving frame and closes the opening, and an edge portion of the lid which can be opened and closed are provided on the receiving frame. A hinged piece to be connected, and a cutout portion is provided at an edge portion of the lid, and convex shaft portions are provided so as to protrude from the opposite inner side surfaces of the cutout portion substantially in parallel to the edge portion, respectively. An upper wall having an upper surface close to the lower surface of the lid is provided on the receiving frame on the lower side of the cutout portion, and an engaging hole for vertically engaging the lower portion of the hinge is formed by vertically penetrating the upper wall. The metal fitting is inserted into the notch at a predetermined rotational position, and the lower end of the engaging portion that engages with the engaging hole by extending downward from the head and passing through the engaging hole and then rotating. And a substantially L-shaped groove in which the convex shaft portion engages with the head portion and the leg portion. The L-shaped groove is configured to pass the engaging portion through the cutout portion and the engaging hole of the hinge metal member in the closed state, and then rotate the hinge metal member around the leg portion by a predetermined angle, and It is characterized in that it is formed so that it can be lowered to fit the head into the notch.

With this means, after the receiving frame is installed, the lid to which the hinge hardware is not connected is supported by the receiving frame to be in the closed state, and then the hinge metal can be mounted. That is, when attaching the hinge metal fitting, first, the head portion of the hinge metal fitting is pinched and the engaging portion at the lower end thereof is inserted into the engaging hole of the upper wall below the notch portion of the lid, and then the hinge metal fitting L When the horizontal end position of the V-shaped groove and the height position of the convex shaft portion are aligned and the hinge metal member is rotated around the leg portion by a predetermined angle, the engagement portion has a positional relationship with which it engages with the engagement hole. The convex shaft part comes to be located at the lower end of the vertical part of the L-shaped groove, and when the hinge hardware is released in that state, it descends by its own weight along the vertical part of the L-shaped groove, and the head part at the cutout part. Is fitted and is in a connected state. In this closed state, it is possible to open and close the lid in the connected state. Also, this connected state is released by lifting the hinge hardware and rotating it by a predetermined angle contrary to the above, but it is impossible to separate unless this is done, and it is possible that the hinge hardware will not come off due to vibration. None, and is not easily separable except by those who know the structure.

In the above-mentioned means, the receiving frame has a quadrangular inner peripheral surface, and a lid supporting portion is provided in a stepped manner inside thereof.
The lid has a quadrangular outer peripheral surface corresponding to the quadrangle and is fitted into the lid so that the lid upper surface and the receiving frame upper surface are substantially aligned with each other in a closed state, and is supported by the supporting portion, and the connecting portion by the hinge metal member is It is preferable that the quadrangle is provided at a plurality of positions on one side. With this configuration, the invention can be applied to a receiving frame and a lid such as a gutter of a road or a water collecting basin, and the receiving frame and the lid can be provided so as to match the road surface.

In the above structure, a side wall that is continuous with the upper wall and extends downward substantially parallel to the side where the cutout portion is provided is provided inside the receiving hole with respect to the engaging hole, and the engaging hole extends from the upper wall. The lid is formed to extend in a direction away from the side across the side wall, and the lower surface near the side of the lid abuts in a substantially vertical half-opened posture in which an upper surface of the lid near the side abuts the side wall, thereby causing the half-opened posture. It is preferable that the receiving frame be provided with a stopper to be maintained. With this configuration, the lid can be held in a half-opened posture, so when applied to the gutter lid of a road gutter,
Compared to the case where the lid is rotated 180 degrees in the fully open state, it is less likely to obstruct road traffic.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is shown in FIGS.
This will be described with reference to FIG. The connection structure 1 of the receiving frame and the lid is
This is a structure in which the separately formed substantially rectangular receiving frame 2 and the lid 3 are openably and closably connected to one side of the rectangle by a separately formed hinge metal member 4. In this example, two places are connected by a hinge metal piece, and one of them will be described. Normally, the receiving frame 2,
The lid 3 and hinge hardware 4 are made of cast iron.

The receiving frame 2 has a lid 3 as shown in FIGS.
The rectangular frame portion 17 forming the outer edge portion of the is formed into a rectangular frame shape into which the lid frame 10 is formed, and the lid support portion 10 is formed inside the stepped portion. Reference numeral 11 denotes an edge portion hinged to the edge portion of the lid 3. As shown in the enlarged view of FIG. 2, the main part of the receiving frame 2 corresponds to the position of the hinge hardware 4 and is close to the edge-side back surface of the lid 3 in the closed state which is hinged.
A cavity 15 (see FIG. 2C) is formed inside by an upper wall 13 having 2 and an end portion of the upper wall 13 farther from the edge portion 11 and a side wall 14 extending downward. The upper wall 13 is provided with an engaging hole 16 penetrating in the vertical direction so that the engaging portion 24 of the hinge 4 can be inserted from above with the longitudinal direction perpendicular to the edge portion 11 having a planar shape. Has been done. The width of the engagement hole 16 in the direction parallel to the edge portion 11 corresponds to the diameter of the circular cross-section portion 28 of the leg portion 23 of the hinge hardware 4 described later.

As shown in FIGS. 1 and 3, the lid 3 is formed by forming the inside of a rectangular frame portion 17 into a lattice shape.
At the upper and lower end positions of the left end edge portion 18 of (a), there are rectangular notches 19 into which the heads 22 of the hinge hardware 4 described below are fitted, and FIG. 3 is a detailed view near the notches 19 of the lid 3. And the edges 18 from the inner surfaces 20 of the respective notches 19 facing each other.
A short columnar convex shaft portion 21 is provided so as to be coaxially and protrude substantially in parallel with each other. A supported portion 40 corresponding to the lid supporting portion 10 of the receiving frame 2 is provided on the lid 3 so as to project from the lower surface of the edge portion of the lid.

The hinge hardware 4 is, as shown in FIGS. 1 and 4,
A leg portion 23 extends downward from the head portion 22 at the upper end and has an engaging portion 24 at the lower end. The head portion 22 is formed of a rectangular portion 25 having a predetermined thickness, the upper end of which is fitted into the cutout portion 19, and a short columnar portion 26 which is continuous to the lower side thereof. Legs 23
The elliptical cross section 27 on the upper side and the circular cross section 28 having a diameter of the short diameter of the elliptical cross section continuing to the lower side are formed to be slightly longer. The distance between the tip ends of the convex shaft portions 21 and 21 is set to a dimension corresponding to the diameter of the circular cross-section portion 28. The engaging portion 24 has a rectangular planar shape and is formed to have a predetermined thickness.
The width corresponds to the diameter of the circular cross section 28, and the dimension in the front-rear direction (vertical direction in FIG. 4D) is larger than the major axis of the elliptical cross section 27. An L-shaped groove 29 is formed over the head portion 22 and the leg portion 23 so that the convex shaft portions 21, 21 are slidably engaged with each other. That L
The V-shaped groove 29 is composed of a vertical groove portion 30 and a horizontal groove portion 31, and has a groove width corresponding to the diameter of the convex shaft portion 21 and a depth corresponding to the protrusion amount.

In the connecting structure 1 of the lid and the receiving frame, the connection is performed as shown in FIG. That is, first, in FIG.
As shown in (a) and (b), the opening formed by the receiving frame 2 installed at the desired position is closed by the lid 3.
Next, as shown in FIGS. 5 (c) and 5 (d), the hinge hardware 4 is
For example, the head 22 is picked up and the lower end engaging portion 24 is inserted into the engaging hole 24 below the notch 19. Then, when the heights of the convex shaft portion 21 and the lateral portion 31 of the L-shaped groove 29 are the same, the height of the convex shaft portion 21 and the lateral portion 31 of the L-shaped groove 29 is 90 in a predetermined direction indicated by an arrow 32 in the figure.
Rotate it once. As a result, as shown in FIGS. 5E and 5F, the convex shaft portions 21 and 21 are relatively moved in the lateral groove portion 31 of the L-shaped groove 29 and positioned at the lower end of the vertical groove portion 30. . When the hands holding the head 22 are released from the state of FIGS. 5 (e) and (f), the hinge hardware 4 descends by its own weight, that is, the vertical groove portions 30, 30 are guided by the convex shaft portions 21, 21. It vertically descends, and as shown in FIGS. 5 (g) and 5 (h), the head portion 22 fits into the cutout portion 19, and the connecting operation ends. When it is necessary to separate the lid 3 from the receiving frame, the hinge hardware 4 may be removed in the reverse order of the above.

The receiving frame 2 and the lid 3 connected by the hinge hardware 4
It means that, as shown in FIG. 6, the lid 3 can be rotated 180 degrees to be in the open state by lifting and reversing the vicinity of the edge portion on the opposite side of the edge portion 18 connected by the hinge hardware 4. it can. When changing from the closed state to the opened state, the convex shaft 2
Although 1, 21 are slightly displaced upward, the hinge hardware 4 follows this upward displacement. This follow is within a range in which the engaging portion 24 of the hinge hardware 4 is not restrained by the engaging hole 16. Further, in the closed state, even if the lid 3 is upwardly displaced for some reason, the hinge metal member 4 is elevated due to the upward displacement, but the engaging portion 24 at the lower end engages with the engaging hole 16 of the receiving frame. And further upward displacement is regulated. Therefore, the lid is not opened accidentally. Further, in the closed state, the hinge 4 has the vertical groove portion 30 of the L-shaped groove 29 and the convex shaft portion 21 of the lid 3 engaged with each other. The hinge hardware 4 does not come off accidentally because it does not come out only by movement. In addition, the head portion 2 is provided in the cutout portion 19.
Since the two rectangular portions 25 are fitted, the internal structure cannot be known from the appearance. Therefore, since the hinge hardware 4 is difficult to remove, it is difficult to remove or lose it by mischief or the like.

As described above, in this connecting structure 1, the receiving frame 2 can be installed independently at the desired opening forming position, and after the opening is closed by the lid 3, only the hinge 4 is operated to receive the receiving frame 2. The lid 3 and the lid 3 can be connected by a hinge metal piece 4. Therefore, the work of installing the receiving frame 2 is easy, and the work of subsequently connecting the receiving frame 2 and the lid 3 is also very easy. Further, even if the lid 3 is vibrated, the connection is not easily disconnected, the lid is not easily opened, and the lid 3 is not easily lost.

Another embodiment of the present invention is shown in FIG. In the above-mentioned embodiment, the lid 3 is described as being opened by 180 degrees, but this connecting structure is a structure for making the upper surface of the lid 3 half-open in a substantially vertical state as shown in FIG. 7B. Can be applied. That is, FIG.
As shown in (b), the engagement hole 16 formed in the upper wall 13 of the receiving frame 2 is formed in the same width so as to extend over the side wall 14 in the direction away from the edge portion 11. 33 is an expansion part. On the receiving frame 2, the stoppers 34 are directed upward from the side wall 14 in a direction away from the edge portion 11 with a distance corresponding to the thickness dimension of the edge portion 18 connected to the hinge metal member 4 of the lid 3. To project. The stoppers 34 are provided integrally with the edge portions 35 that extend to both ends of the edge portion 11.

As a result, when the lid 3 becomes substantially vertical during the opening of the lid 3, the side of the edge portion 18 having the cutout portion 19 is shown in FIG.
When the hinge hardware 4 is tilted and moved in the direction indicated by the arrow 36 in (b), both ends of the edge 18 on the notch 19 side of the lid 3 fall between the side wall 14 and the stopper 34, and at that position. The state of being held in a substantially vertical posture (the state of FIG. 7B) is obtained. In the state shown in the drawing, the lid 3 is opened to an opening angle θ of 100 °, which is slightly larger than 90 °, but this is because the side wall is tilted by 10 ° from the vertical, which facilitates the work in the gutter, for example. This is a configuration for. When the lid 3 can be held in a substantially vertical state in this way, when it is applied to a gutter lid of a road gutter, it will hinder traffic if it is fully opened to 180 degrees, but it is difficult to hinder traffic in a half-open state. is there.

[0017]

According to the first and second aspects of the present invention, after the lid is supported on the receiving frame in the closed state, the hinge frame can be operated only to connect the receiving frame and the lid. This has the effect of facilitating the construction work of. According to the invention described in claim 3, since the lid can be held in a half-open state in the middle of opening 180 degrees, there is an effect that it is difficult to obstruct traffic.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a plan view and (b) is a sectional view taken along line AA.

FIG. 2 is a partially enlarged view of the receiving frame of the same embodiment,
(A) is a plan view, (b) is a right side view corresponding to (a),
(C) is a BB sectional view of (a).

FIG. 3 is a partially enlarged view of the lid of the same embodiment,
(A) is a plan view, (b) is a left side view corresponding to (a),
(C) is CC sectional drawing of (a).

FIG. 4 is an enlarged view of the hinge hardware of the same embodiment,
(A) is a plan view, (b) is a front view, (c) is a right side view,
(D) is a DD sectional view of (b).

FIG. 5 shows a hinge connection procedure of the embodiment,
(A), (c), (e), (g) are plan views of each stage,
(B) of (a), (d) of (c), (f) of (e)
2 (h) is a partial view of a cross section of (g) corresponding to FIG. 1 (b).

FIG. 6 is a cross-sectional view showing a 180 degree open state of the embodiment.

7A and 7B show another embodiment, FIG. 7A is a partially enlarged plan view of a receiving frame, and FIG. 7B is a sectional view in a half-opened state.

[Explanation of symbols]

1 connection structure 2 receiving frame 3 lid 4 hinge hardware 10 Lid support 11 edges 12 Upper surface 13 Upper wall 14 Side wall 15 cavities 16 engagement holes 17 frame 18 edges 19 Notch 20 Inside 21 Convex shaft 22 head 23 legs 24 Engagement part 25 rectangular part 26 Short cylindrical part 27 Oval cross section 28 Circular cross section 29 L-shaped groove 30 vertical groove 31 Lateral groove 32 arrows 33 Extension 34 Stopper 35 Edge 36 arrows

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Claims (3)

(57) [Claims] 1. A lid comprising: a receiving frame that forms an opening; a lid that is supported by the receiving frame to close the opening; and a hinge metal member that connects the edge of the lid to the receiving frame so that the lid can be opened and closed. A cutout portion is provided at the edge of the cutout portion, and projecting shaft portions that project from the opposite inner side surfaces of the cutout portion so as to face the edge portion, respectively, are provided substantially parallel to the edge portion. An upper wall having an upper surface close to the lower surface is provided on the receiving frame, and an engaging hole through which the lower portion of the hinge metal member engages is formed by vertically penetrating the upper wall.
A head part that fits the hinge metal part into the notch part at a predetermined rotation position, and an engaging part that extends downward from the head part and extends through the engaging hole and then rotates to engage with the engaging hole. And a leg portion having a lower end, and a substantially L-shaped groove with which the convex shaft portion engages is provided across the head portion and the leg portion, and the L-shaped groove is in a closed state. After passing the engaging portion through the cutout portion and the engaging hole of the hinge metal fitting, the hinge metal fitting is rotated around the leg portion by a predetermined angle and then lowered to allow the head to be fitted into the cutout portion. A connecting structure for a lid and a receiving frame, which is characterized in that it is formed. 2. The connecting structure of a lid and a receiving frame according to claim 1, wherein the receiving frame has a quadrangular inner peripheral surface, and a lid supporting portion is provided inside the step of forming a step, and the lid is Having a quadrangular outer peripheral surface corresponding to the quadrangular inner peripheral surface, the lid upper surface and the receiving frame upper surface are fitted so as to substantially coincide with each other in a closed state and supported by the supporting portion, and the connecting portion by the hinge hardware is A connecting structure of a lid and a receiving frame, which is provided at a plurality of locations on one side of a quadrangle. 3. The connecting structure for a lid and a receiving frame according to claim 2, wherein the lid is extended downward in a direction substantially parallel to a side that is continuous with the upper wall and is provided inside the receiving frame with respect to the engagement hole and inside the receiving frame. A side wall is provided, the engagement hole is formed to extend from the upper wall to the side wall in a direction away from the side, and the lid in a substantially vertical half-open position in which an upper surface of the lid near the side abuts the side wall. A connecting structure for a lid and a receiving frame, wherein a stopper for maintaining the half-opened posture by contacting a lower surface near the side is provided on the receiving frame.