JP2957962B2 - Grating hinge mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grating hinge mechanism attached to a gutter, a catchment basin, or the like.

[0002]

2. Description of the Related Art For example, rainwater and domestic wastewater are generally
Once accumulated in the catchment basin, it is drained through gutters. Mud and sand easily accumulate on the gutters and the bottom of the catchment basin.
Therefore, it is necessary to remove them, and it is necessary to open and close the grating body made of steel and formed in a lattice shape.

[0003] Therefore, in order to make the opening and closing of the grating main body convenient and to prevent the grating main body from being stolen, a hinge mechanism is provided on the grating. As such a conventional grating hinge mechanism, for example, a bolt hinge type or a one-touch hinge type has been adopted.

First, the bolt hinge type will be described with reference to FIG. A pair of holes 33a and 33b are formed in this type of grating body 31. When attaching the grating main body 31 to the receiving frame 32, first, one hole 33 a is inserted through a fixing pin 34 welded and fixed to the inner surface of the receiving frame 32.

Next, the other hole 33b of the grating body 31 is inserted into the hole 3 of the receiving frame to which the cap nut 35 is welded to the outer surface.
6. Then, a hexagon socket head cap screw 37 is inserted from the inside of the grating main body 31 into the hole 33 b and the hole 36 of the receiving frame, and screwed into the cap nut 35. In this manner, the grating main body 31 is mounted and held on the receiving frame 32.

Next, regarding the one-touch hinge system,
This will be described with reference to FIG. A fixing pin 34 similar to the one shown in FIG. 9 and a movable pin 38 that can appear and disappear are attached to a receiving frame 32 of this type of grating main body 31. The movable pin 38 is inserted into the insertion hole 39 of the receiving frame 32, and a spring 43 is interposed between the head 38 a of the movable pin and the bottom wall 41 of the outer case 40 fixed to the receiving frame 32. . The movable pin 38 is always urged toward the inside of the receiving frame 32 by a spring 43.

The side wall 42 of the outer case 40 is formed in a cylindrical shape, and is fixed to the outer surface of the receiving frame 32 by welding. The bottom wall 41 is fixed to the front end surface of the side wall 42 by welding. When attaching the grating 31 to the receiving frame 32, first, one of the holes 33 a is inserted into the fixing pin 34, similarly to the bolt hinge type.

Next, the movable pin 38 is moved by a finger to the outer case 40.
The grating body 31 is dropped into the receiving frame 32 while being pushed in the direction of. When the movable pin 38 and the hole 33b face each other, the movable pin 38 is inserted into the hole 33b by the bias of the spring 43.

[0009]

However, the prior art grating hinge mechanism has the following problems.

That is, in the above-mentioned bolt hinge type hinge mechanism, the hexagon socket head cap screw 37 is moved with a finger from the gap between the gratings of the grating body 31 while holding the grating body 31 at a predetermined height. It must be inserted through the hole 33b and the hole 36 of the receiving frame, and further screwed to the cap nut 35 using a wrench or the like. The work space was very small, so the work was cumbersome and took a lot of time.

In the mounting operation of the grating body 31 in the one-touch hinge type hinge mechanism, the movable pin 38 must be pushed in the direction of the outer case 40 with the other hand while lifting the grating body 31 with one hand.

Further, since the grating body 31 itself is very heavy, a considerable force is required. In particular, it becomes difficult to work alone by using a large grating body 31.

Further, an outer case 4 surrounding the spring 43
In No. 0, the bottom wall 41 and the side wall 42 were fixed by welding. Therefore, the number of members is large and the cost increases. In addition, if the welding is incomplete, water or the like easily enters the case, which may cause the movable pin 38 and the spring 43 to rust.

The present invention has been made by paying attention to such problems existing in the prior art. SUMMARY OF THE INVENTION An object of the present invention is to provide a grating hinge mechanism in which a grating main body can be easily attached to a receiving frame.

[0015]

In order to solve the above problems, according to the first aspect of the present invention, a pair of pins are protruded from a receiving frame, and a hole for inserting the pins is provided with a grating. Provided in the main body, in the grating in which the grating main body can be opened and closed around a pin, at least one of the pins is allowed to appear and retract via a spring, and at least one of the pin and the grating main body is provided with a cam surface, and the cam surface is provided. The gist is that the pin is formed so as to be pushed out of the receiving frame when the pin comes into contact with the grating body.

The gist of the present invention is that the cam surface is formed at the tip of a pin. In the invention described in claim 3, the gist is that a means for restricting rotation of the pin is provided in the receiving frame.

Therefore, in the grating hinge mechanism according to the first and second aspects, if the grating body is dropped into the receiving frame from above, the pins are pushed out of the receiving frame by the action of the cam surface. Then, the pin is inserted into the hole of the grating main body by the spring.

According to the third aspect of the present invention, the cam surface surely engages with the mating side.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the grating comprises a receiving frame 12 and a grating main body 11. The receiving frame 12 is provided with two anchors 13 on both sides thereof, and these anchors 13 are embedded in the ground, and the receiving frame 12 is fixed.

As shown in FIG. 2 and FIG.
4 a is welded and fixed to one side of the receiving frame 12. The movable pin 14b is attached to a position facing the fixed pin 14a, and can move in and out. The movable pin 14b is inserted through the hole 15 of the receiving frame and the hole 20b of the grating main body.

An inclined surface 18 as a cam surface is provided at the tip of the movable pin 14b. Therefore, when the grating body 11 comes into contact with the movable pin 14b, the movable pin 14b
Push in the direction of 6.

The head of the movable pin 14b and the receiving frame 12
A spring 17 is interposed between the outer case 16 and the bottom wall of the outer case 16 fixed by welding to the outer surface of the outer case. The spring 17 is made of a touch-resistant steel material such as stainless steel, and the outer case 16 is a one-piece formed by drawing.

As shown in FIG. 4, a notch 19 is formed on the outer periphery of the movable pin 14b, and has a D-shaped cross section.
Correspondingly, the hole 15 of the receiving frame is also formed in a D shape. Therefore, the movable pin 14b does not rotate.

When attaching the grating body 11 to the receiving frame 12, first, one hole 20a of the grating body 11 is inserted into the fixing pin 14a. Next, as shown in FIG. 5 and FIG.
If 1 is directly dropped downward, the grating body 11 comes into contact with the inclined surface 18 of the movable pin 14b, and the movable pin 14b is pushed in the direction of the outer case 16. When the movable pin 14b faces the other hole 20b of the grating body, the movable pin 14b is inserted into the grating hole 20b by the bias of the spring 17.
Thus, the grating main body 11 is attached and held in the receiving frame 12.

As described above, this embodiment has the following advantages. (1) Since the mounting can be completed simply by dropping the grating main body 11 into the receiving frame 12, the work can be simplified and the work efficiency can be improved.

(2) The movable pin 14b and the hole 15 of the receiving frame
The movable pin 14b does not rotate because the notch is formed in the movable pin 14b. For this reason, when the grating main body 11 is dropped into the receiving frame 12, the inclined surface of the movable pin 14b can reliably contact the grating main body 11. The present invention can be embodied with the following modifications. It is.

(1) As shown in FIG.
(b) The tip of b is formed on a conical cam surface. For this reason, the same operation and effect as the above embodiment can be realized. In addition, with this configuration, the structure for preventing the rotation of the movable pin 14b becomes unnecessary, and the configuration is simplified.

(2) As shown in FIG.
b. To form a cam surface by making the tip end portion spherical. Even in this case, the same effect as the above (1) can be obtained. (3) The movable pins 14b are attached to both sides of the receiving frame 12. Therefore, if the grating main body 11 is dropped into the receiving frame from above, it can be set at a predetermined position.

(4) An inclined surface forming a cam surface is provided at the lower end of the grating main body 11. Even with such a configuration, the same effect as in the above embodiment can be obtained. Further, a technical idea grasped from the embodiment will be described below.

3. The grating hinge mechanism according to claim 1, wherein an outer case attached to the receiving frame and covering the pin and the spring is formed of an integral member such as a cap. With this configuration,
The possibility that the spring or the like in the outer case is rusted is reduced. Also, since the number of parts can be reduced,
It can contribute to cost reduction.

[0032]

The present invention is configured as described above, and has the following effects. According to the first and second aspects of the present invention, since the mounting can be completed only by dropping the grating main body into the receiving frame, the operation can be simplified and the efficiency of the operation can be improved.

According to the third aspect of the present invention, the cam surface can always face the grating main body. For this reason,
The operation of the cam surface can be reliably ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view of grating in the present embodiment.

FIG. 2 is a partial plan view of the grating.

FIG. 3 is a partial plan view of the grating.

FIG. 4 is a partial cross-sectional view taken along line A-A ′ of FIG. 3;

FIG. 5 is a partial cross-sectional view taken along line B-B ′ of FIG. 3;

FIG. 6 is a partial cross-sectional view taken along line B-B ′ of FIG. 3;

FIG. 7 is a sectional view showing a grating hinge mechanism according to another embodiment.

FIG. 8 is a sectional view showing a grating hinge mechanism according to another embodiment.

FIG. 9 is a plan view showing conventional grating.

FIG. 10 is a plan view showing conventional grating.

[Explanation of symbols]

11 ... Grating body, 12 ... Receiving frame, 14a ... Fixed pin as pin, 14b ... Movable pin as pin, 17
... spring, 18 ... inclined surface as a cam surface.

Claims (3)

(57) [Claims] 1. A pair of pins projecting from a receiving frame,
A hole for inserting the pins is provided in the grating main body, and in the grating where the grating main body can be opened and closed about the pin, at least one of the pins and the grating main body can be protruded and retracted via a spring. The cam mechanism has a cam surface, and the cam surface is formed so as to push the pin outwardly of the receiving frame when the pin comes into contact with the grating body. 2. The grating hinge mechanism according to claim 1, wherein said cam surface is formed at a tip of a pin. 3. The grating hinge mechanism according to claim 1, wherein said receiving frame is provided with means for restricting rotation of said pin.