JPH0444701Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a grating to be installed at the opening of a gutter or a catch basin, and more specifically, to the structure of a pivot mechanism for supporting one end of the grating body on each of a pair of opposing receiving frames so that it can be freely opened and closed.

[Conventional technology]

In this type of grating, the end of the grating main body that closes the opening is supported by the support frame via a pivot mechanism so that it can swing open and close. They are supported by the receiving frame through a pivot mechanism of the same configuration so as to be able to swing open and close, and the structure of the pivot mechanism disclosed in Japanese Utility Model Application No. 59-121088 has been used. It was known. The conventional configuration will be explained with reference to FIG. That is, the bolts 56 are inserted from the inside of the receiving frame 51 into the pivot pin insertion holes 53 formed in the rising portion 52 of the receiving frame 51 and the pivot pin insertion holes 55 formed at the end of the grating body 54; A pivot mechanism 50 is constituted by a nut 57 screwed into the bolt 56 on the outside of the rising portion 52 of the receiving frame 51, and the bolt 56 functions as a pivot pin, and the grating body is rotated around the bolt 56. 54 is supported on the receiving frame 51 so as to be able to swing vertically to open and close.

[Problems to be solved by the invention] In the conventional grating having the above-described configuration, when supporting the grating body 54 on the receiving frame 51 via the pivot mechanism 50 so as to be able to swing open and close, the bolts 56 are The pivot pin insertion hole 55 is inserted through the grid-like narrow opening of the grating body 54.
53, and then screw the inserted bolt 56 into the nut 57, which is troublesome and requires a large amount of operation time. Moreover, on the outside of the receiving frame 51, there is a rising portion 52 thereof.
The receiving frame 51 is fixed by pouring concrete to a level corresponding to the top surface, but at this time, the nut 5
7 is embedded in the concrete,
If left as is, a portion of the concrete will enter the female threaded hole of the nut 57, making it extremely difficult to screw in the bolt 56 thereafter. Therefore, in order to prevent concrete from entering the female threaded hole of the nut 57,
After applying grease to the threaded part of the bolt 56,
The bolts 56 are screwed into the nuts 57, concrete is poured, the bolts 56 are removed once the receiving frame 1 is fixed, and the bolts 56 are screwed into the nuts 57 again when the grating body 54 is supported by the receiving frame 1. However, in this case, the bolt 56 is tightened twice to the nut 57.
Because the screws must be screwed into
It was not possible to completely prevent the grating from entering into the female screw hole 7, and there was a problem in that the workability of supporting the grating body 54 to the receiving frame 1 was impeded by the concrete.

This idea was made in view of the above circumstances.
After fixing the receiving frame by pouring concrete,
To provide a grating whose grating body can be very easily and quickly supported in a swingable manner to open and close on a receiving frame without requiring screwing work or being interfered with by concrete.

[Means for Solving the Problems] In order to achieve the above object, the grating according to claim 1 of the present invention includes a pair of receiving frames facing each other, and a grating body that opens and closes an opening formed between the receiving frames. and a grating in which one end of the grating main body is supported by each of the receiving frames via a pivoting mechanism so as to be able to open and close, at least one of the pivoting mechanisms being formed on a rising portion of one of the receiving frames. a pin cover that is fixed to the outside of the receiving frame in a state surrounding the pivot pin insertion hole and with its top surface being substantially flush with the top surface of the rising part of the receiving frame; A pivot pin that is inserted into the formed pivot pin insertion hole and the pivot pin insertion hole of the rising part of the support frame from the inside of the support frame and protrudes into the inside of the pin cover, and a pivot pin that is inserted into the pin cover from the top surface thereof. A retaining pin that is inserted from above into a retaining pin insertion hole with an upward opening formed toward the bottom and inserted into a retaining pin insertion hole formed diametrically through the pivot pin. It is.

Further, in the grating according to a second aspect of the present invention, both pivot mechanisms of the grating main body are configured to have the same structure as the pivot mechanism shown in the first aspect.

[Function] According to the grating of the configuration of claims 1 and 2,
When the receiving frame is fixed with concrete cast on the outside of the receiving frame, the pivot pin insertion hole formed in the rising part of the receiving frame is closed by a solid pin cover fixed to the outside of the receiving frame. Therefore, concrete does not enter the pivot pin insertion hole and cause clogging. Once the receiving frame is fixed by pouring concrete, next insert the pivot pin from the inside of the receiving frame into the pivot pin insertion hole formed in the outer frame of the grating body and the pivot pin insertion hole formed in the rising part of the receiving frame. until the retaining pin insertion hole formed diametrically through the pivot pin matches the upwardly opening retaining pin insertion hole formed in the pin cover. When inserted, the retaining pin is inserted from above into the upwardly opening retaining pin insertion hole, and the retaining pin is inserted into the retaining pin insertion hole of the pivot pin, thereby locking the pivot pin. This prevents the grating from falling off, and the grating body is supported by the upright portion of the receiving frame so as to be able to swing up and down about the pivot pin.

In this way, when concrete is poured to fix the receiving frame, a part of the concrete does not enter the pivot pin insertion hole and become clogged, and it is sufficient to simply insert the pivot pin and retaining pin. Since no screwing operation is required, the grating body can be supported on the receiving frame very easily and quickly so as to be able to swing open and close.

〔Example〕

Figure 1 shows a grating A according to an embodiment of the present invention.
FIG. Grating A has horizontal bar 2,
A pair of opposing receiving frames 1, 1 connected by 2
and a grating body 3 for opening and closing an opening formed between the receiving frames 1, 1, and an end of the grating body 3 is connected to the receiving frames 1, 1.
are supported via pivot mechanisms 4, 4, respectively, so as to be able to swing open and close.

The receiving frame 1 on one side (the receiving frame on the right side in FIG. 1) is formed of an L-shaped member in cross-section, integrally having a receiving portion 11 and a rising portion 12. The receiving frame 1 on the other side (the receiving frame on the left side in FIG. 1) is made up of L-shaped members having the same structure as the receiving frame 1 on one side and arranged symmetrically with respect to the receiving frame 1 on one side.

The grating main body 3 has a grid-like crosspiece 31 with a rectangular outer contour, and outer frames 32, 32 at both left and right ends correspond to the receiving frames 1, 1 on one side and the other side, respectively.

As shown enlarged in Figures 2 and 3,
The pivot mechanism 4 that supports one end of the grating body 3, that is, the right outer frame 32, on the receiving frame 1 on one side inserts a pivot pin insertion hole 13 formed in the rising portion 12 of the receiving frame 1 on one side. A pin cover 41 is fixed to the outer surface of the rising portion 12 by appropriate means such as welding in a surrounding state, a pivot pin insertion hole 33 formed in the end of the grating body 3, that is, the outer frame 32, and the support frame 1. A pivot pin 42 is inserted into the pivot pin insertion hole 13 from inside and protrudes into the pin cover 41, and a pivot pin 42 is inserted into the pin cover 41 from above and penetrates the pivot pin 42 in the diametrical direction. It consists of a retaining pin 43 that is inserted through a retaining pin insertion hole 47 that is formed.

The pin cover 41 shown in FIGS. 2 and 3 is made of a solid metal member or a synthetic resin molded product, and has an upward opening that is formed by a drill hole or a molded hole made downward from the top surface of the pin cover 41 to prevent it from slipping out. A retaining pin 43 is inserted into the pin insertion hole 44, and a pivot pin 42 is protruded into a hole (or molded hole) 48 made from the joint surface of the receiving frame 1 to the rising portion 12.

As clearly shown in FIG. 3, the retaining pin insertion hole 44 is formed in a bottomed shape that does not vertically penetrate through the pin cover 41, and is provided with the receiving frame 1 on the outside in order to fix the receiving frame 1. When pouring concrete to a level flush with the top surface of the rising portion 12, a portion of the concrete may enter the retaining pin insertion hole 44 from below the pin cover 41 and become clogged. It is possible to eliminate The retaining pin 43 is attached to the pin cover 4
It is desirable to set the length to such an extent that the upper end of the pin does not protrude from the upper surface of the pin cover 41 when it is completely inserted into the retaining pin insertion hole 44 of No. 1.
For example, as shown in the illustration, the upper end is the retaining pin insertion hole 4.
The pin cover 41 may be set to such a length that it sinks into the inside of the pin cover 41, or may be set to such a length that its upper end is flush with the top surface of the pin cover 41. In the case of the illustrated example, it is better to fill the space above the retaining pin 43 with something. In this way, the retaining pin 43
By preventing the upper end from protruding from the upper surface of the pin cover 41, the retaining pin 43 does not obstruct traffic, and it also becomes difficult to pull out the retaining pin 43, which helps prevent theft. In addition, the thickness of the retaining pin 43 may be made thinner than the diameter of the retaining pin insertion holes 44 and 47 so that the retaining pin 43 can be dropped into them by its own weight. Stopping pin insertion hole 4
It may be made to have the same diameter as No. 4 or 47 and be press-fitted therein by a method such as hammering. Furthermore, a split pin having a split groove 43a in the axial direction as shown in FIG. Since the diameter of 43 is allowed to decrease, it is easier to insert, and after insertion, the split groove 43a returns to its original state, making it difficult to slip out. The pin cover 41 may be hollow as shown in FIG. 4, and in this case, a retaining pin insertion hole 44 is preferably provided in the upper wall 45 of the pin cover 41. Hollow pin cover 4 like this
1, the retaining pin 43 is inserted through the pivot pin 42 with the lower end of the retaining pin 43 touching the lower wall 46 of the pin cover 41, and the upper end of the retaining pin 43 is in contact with the lower wall 46 of the pin cover 41. Make it long enough so that it does not stick out from the top. In addition, in FIG. 3 and FIG. 4, 47 is a retaining pin insertion hole formed to penetrate the pivot pin 42 in the diametrical direction.

The pivot pin 42 has a collar 4 at its base end.
9, and the length of the pivot pin 42 is such that when the pivot pin 42 is completely inserted into the hole 48 of the pin cover 41 as shown in FIG. It is desirable that a slight play width a is formed between the flange 49 and the flange 49. By doing this, the grating body 3
It can be opened and closed smoothly without any creaking.

The pivot mechanism 4 that supports the other end of the grating body 3, that is, the left outer frame 32, on the receiving frame 1 on the other side has the same configuration as the pivot mechanism 4 described above, and detailed description thereof will be omitted. do.

To explain an example of the procedure for supporting the end of the grating body 3 on the receiving frame 1 using the pivot mechanism 4, first, the grating body 3 is fitted between the pair of receiving frames 1, 1, and the lattice shape of the grating body 3 is The pivot pin 4 inserted using the opening of the crosspiece 31
2 into the pivot pin insertion holes 33 and 13 in this order to protrude into the inside of the pin cover 41, and then insert the retaining pin 43 from above into the retaining pin insertion holes 44 and 4.
7. Although the pivot pin 42 is inserted using the opening in the grid-like crosspiece 31 of the grating body 3, it is not possible to insert the nut 59 (see FIG. 6) into the opening as in the conventional case. No screwing is necessary, so
Workability has been greatly improved compared to conventional methods, and work can be performed more accurately.

In the present invention, the above-mentioned pivot mechanism 4 is used only to support the receiving frame 1 on one side and the end of the grating body 3, and a separate pivot mechanism is used to support the receiving frame 1 on the other side and the end of the grating body 3. A mounting mechanism may also be used.
For example, a pivot pin is made to protrude inward from the rising portion 12 of the receiving frame 1 on the other side, and a long hole opened in the end of the grating body 3, that is, the outer frame 32 on the other side is fitted into the pivot pin. A pivot mechanism configured to allow this to occur may also be adopted.

[Effect of idea]

As described above, according to the present invention, a screw structure such as bolts and nuts is not used in the pivot mechanism for supporting one end of the grating body on each of the receiving frames so as to be able to swing open and close. There is no need for screwing through the narrow lattice-like openings of the grating body, and instead, a simple operation of simply inserting two pins into the insertion holes is sufficient. Therefore, the support work of the grating body to the receiving frame by the pivot mechanism is easier than before.
It can be done easily and with less effort. Moreover,
A pin cover is fixed to the outside of the receiving frame so that its upper surface is substantially flush with the upper surface of the rising part of the receiving frame, and a retaining pin with an upward opening is inserted into this pin cover from the upper surface downward. Since the holes are formed, when concrete is poured on the outside of the receiving frame before the grating body is supported by the receiving frame, some of the concrete may get into the pivot pin insertion hole and retaining pin insertion hole. It is possible to reliably prevent clogging from occurring, and therefore, the pivot pin and retaining pin can be inserted smoothly into each hole without being interfered with by concrete. I can,
In addition, alignment work between the retaining pin insertion hole formed on the pivot pin side and the retaining pin insertion hole formed on the pin cover side can be done from above the retaining pin insertion hole on the pin cover side. Since this can be easily done by looking into the grating, the overall practical effect is that the workability of supporting the grating body with respect to the receiving frame can be greatly improved compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a partial plan view of a grating according to an embodiment of the present invention, FIG. 2 is an enlarged plan view of the part shown in FIG. FIG. 5 is a side view showing an example of a retaining pin, and FIG. 6 is an enlarged vertical side view of the main part of a conventional grating. A... grating, 1... receiving frame, 3... grating body, 4... pivot mechanism, 12... rising part, 13, 33... pivot pin insertion hole, 32... outer frame of grating body, 41 ...Pin cover, 4
2... Pivot pin, 43... Retention pin, 44, 4
7... Removal pin insertion hole.

Claims (1)

[Claims for Utility Model Registration] 1. Comprising a pair of receiving frames facing each other and a grating body for opening and closing an opening formed between the receiving frames, one end of the grating body being pivoted to each of the receiving frames. In a grating that is supported so as to be swingable in opening and closing via a mounting mechanism, at least one of the pivoting mechanisms surrounds a pivot pin insertion hole formed in a rising portion of one side of the receiving frame, and the upper surface thereof is A pin cover fixed to the outside of the receiving frame so as to be substantially flush with the upper surface of the rising part of the receiving frame, a pivot pin insertion hole formed in the outer frame of the grating body, and a pivot support for the rising part of the receiving frame. A pivot pin is inserted into the pin insertion hole from the inside side of the receiving frame and protrudes into the inside of the pin cover, and an upwardly opening retaining pin insertion hole is formed in the pin cover from the top surface toward the bottom. A grating comprising: a retaining pin inserted through a retaining pin insertion hole formed diametrically through the pivot pin. 2 Both pivot mechanisms of the grating body are
2. The grating of claim 1, wherein the gratings are constructed in the same structure.