JP3185853U - Grating - Google Patents

Abstract

The present invention provides a grating that can be opened and closed in a rotating manner that can be attached and detached with a simple mechanism.
A grating 2 which can be rotatably installed on a receiving frame having a pair of opposed shaft pins, and a pair of opposed shaft pins abut on the sidebar 21 when the grating is opened and closed. A pair of shaft pins provided with a pair of bearing portions, which are openings functioning as rotary bearings, and openings connected to the pair of bearing portions at both ends of the end bar adjacent to the pair of bearing portions or once. An insertion opening 26 is provided.
[Selection] Figure 4

Description

  The present invention relates to a grating used as a groove cover of a drainage groove, and particularly to a grating suitable for a drainage drain cover.

Groove lids provided in places where maintenance is performed in drainage grooves such as drainage drainage lids must be able to open and close easily in order to facilitate the removal and cleaning of dust in drainage grooves on a regular basis. .
On the other hand, from the viewpoint of preventing the theft of the groove lid, it is required that the groove lid cannot be easily removed from the receiving frame.
In order to satisfy these two requirements, a groove cover structure having a rotation opening / closing mechanism has been proposed.

  For example, it is assumed that a pair of opposed shaft pins are provided at one end of the receiving frame, and a spring mechanism capable of pushing back the pair of shaft pins is provided. Then, by passing the pair of shaft pins through the bearing portion of the groove lid, the groove lid can be installed on the receiving frame so as to be rotatable around the pair of shaft pins. In addition, since the pair of shaft pins has a spring mechanism that can be pushed back, the groove cover can be removed while the shaft pins are pushed in, and the groove cover can be replaced.

  In general, the groove cover used for the above purpose often uses grating. In the case of a coarse grating bar having a large interval between the bearing bars, the shaft pin can be passed through a space without the bearing bar. However, in the case of fine gratings that can prevent high heel heels and elderly wands from being pinched, the space between the adjacent bearing bars is narrow, the space for passing the shaft pin, and for inserting the finger to push the shaft pin Since there is no space, it is necessary to devise such as notching the bearing bar. However, when notches were provided, problems such as pinching of high-heeled heels and elderly wands or pinching at the notches occurred.

  Therefore, the bearing bar in the vicinity of the bearing is cut out only on the back side of the grating to secure the space necessary for inserting and pushing the shaft pin, and the heel of the high heel is sandwiched by the bearing bar left on the upper surface of the grating. A groove lid configuration that can avoid the problem has been proposed (for example, Patent Document 1).

JP-A-10-195968

As described above, by using the shaft pin having the spring mechanism, the groove lid can be rotated and opened and a certain antitheft effect can be expected.
However, the shaft pin having the spring mechanism is expensive as a part, and there is a problem in cost. In addition, there is a problem that the elastic modulus of the spring deteriorates over time, or the spring mechanism breaks down due to vibration caused by frequent passage of an automobile or the like on the groove lid.
In addition, there has been a problem that when the concrete for fixing the receiving frame is placed, the concrete enters the shaft pin and the spring mechanism does not work.

  In addition to such problems of deterioration and failure of the spring mechanism, there are also problems in the operation when the groove lid is attached and detached. It was not easy to install or remove the heavy-duty groove cover while pushing the shaft pin. For example, when the groove lid is made of grating, its weight exceeds 30 kilograms, so performing the above-mentioned attaching / detaching work alone may cause a safety problem.

  In addition, the configuration disclosed in Patent Document 1 has the above-described problem and leaves only the upper end of the bearing bar, i.e., the surface portion of the grating, and the other part is cut out. Also occurred.

  In addition, instead of using a shaft pin having a spring mechanism, a structure that allows the groove cover to be attached and detached by making the shaft pin detachable from the receiving frame by a screwing mechanism has been adopted. However, more complicated operations such as loosening the bolts fixing the shaft pins are required, and the attaching / detaching work of the grating is made more inefficient.

The grating according to claim 1 of the present invention is a grating used with a receiving frame having a pair of opposed shaft pins,
The grating includes a pair of side bars provided at both ends, a pair of end bars that are substantially orthogonal to the pair of side bars and substantially rectangular with the pair of side bars, and the end bars on the inside of the pair of end bars. A plurality of bearing bars provided in parallel with each other, and a plurality of cross bars provided in parallel with the side bars inside the pair of side bars,
The pair of side bars are provided with a pair of bearing portions that are openings that function as rotary bearings by contacting the pair of opposed shaft pins when the grating is rotated and opened.
A pair of shaft pin insertion openings, which are openings connected to the pair of bearing portions, are provided at both ends of the end bar adjacent to the pair of bearing portions.

The grating according to claim 2 of the present invention is a grating used together with a receiving frame having a pair of opposed shaft pins,
The grating includes a pair of side bars provided at both ends, a pair of end bars that are substantially orthogonal to the pair of side bars and substantially rectangular with the pair of side bars, and the end bars on the inside of the pair of end bars. A plurality of bearing bars provided in parallel with each other, and a plurality of cross bars provided in parallel with the side bars inside the pair of side bars,
The pair of side bars is provided with a pair of bearing portions that are openings that function as rotary bearings when the pair of opposed shaft pins are in contact with each other when the grating is rotated and opened. One end of the adjacent end bar is provided with an opening for inserting a shaft pin, which is an opening connected to one of the pair of bearing portions.

The grating according to claim 3 of the present invention is a grating used together with a receiving frame having a pair of opposed shaft pins,
The grating includes a pair of side bars provided at both ends, a pair of end bars that are substantially orthogonal to the pair of side bars and substantially rectangular with the pair of side bars, and the end bars on the inside of the pair of end bars. A plurality of bearing bars provided in parallel with each other, and a plurality of cross bars provided in parallel with the side bars inside the pair of side bars,
The pair of end bars is provided with a pair of bearing portions that are openings that contact the pair of opposed shaft pins when the grating is rotated and opened and functions as a rotary bearing,
A pair of shaft pin insertion openings, which are openings connected to the pair of bearing portions, are provided at both ends of the side bar adjacent to the pair of bearing portions.

The grating according to claim 4 of the present invention is a grating used with a receiving frame having a pair of opposed shaft pins,
The grating includes a pair of side bars provided at both ends, a pair of end bars that are substantially orthogonal to the pair of side bars and substantially rectangular with the pair of side bars, and the end bars on the inside of the pair of end bars. A plurality of bearing bars provided in parallel with each other, and a plurality of cross bars provided in parallel with the side bars inside the pair of side bars,
The pair of end bars are provided with a pair of bearing portions that are openings that the pair of opposed shaft pins abut and function as rotary bearings when the grating is rotated and opened, and are close to the pair of bearing portions. One end of the side bar is provided with an opening for inserting a shaft pin, which is an opening connected to one of the pair of bearing portions.

  The grating according to claim 5 of the present invention is a fine grating for preventing pinching of heels of high heels and the like on the portions excluding the front and back portions of the bearing bar in the vicinity of the pair of bearing portions. A notch for passing the pair of opposed shaft pins is provided.

Since the grating according to the present invention is configured as described above, there is no need to provide a shaft pin having a spring mechanism on the receiving frame, so that the manufacturing cost of the receiving frame can be reduced, and at the same time, the trouble of the spring mechanism does not occur. Therefore, the problem that it becomes difficult to attach / detach the grating does not occur.
Furthermore, the operation of pushing the shaft pin at the time of attaching / detaching is not required, and the attaching / detaching operation of the grating, which is a heavy object, can be performed more efficiently and safely.

  Further, in the situation where the grating is installed, the structure for inserting the shaft pin in the grating is provided at a position where it is difficult to visually recognize, so that the effect of preventing theft can be enhanced.

It is a perspective view of the receiving frame which concerns on this invention. It is a top view of the receiving frame which concerns on this invention. It is a top view of the grating which concerns on Embodiment 1 of this invention. It is a fragmentary perspective view at the time of seeing the grating side surface concerning Embodiment 1 of this invention from A direction. It is a fragmentary perspective view at the time of seeing the grating side surface which concerns on Embodiment 1 of this invention from B direction. It is explanatory drawing of the method of attaching the grating which concerns on this invention to a receiving frame. It is a top view of the grating which concerns on Embodiment 2 of this invention. It is a fragmentary perspective view at the time of seeing the grating side surface which concerns on Embodiment 2 of this invention from A direction.

  The configuration of the groove lid receiving frame according to the present invention will be described below with reference to the drawings. The following description discloses a good example related to the present invention, and the present invention is not limited to the embodiment. For example, the materials, dimensions, and the like of the device disclosed in the present embodiment are merely a good example, and other possibilities are not denied.

Embodiment 1 FIG.
The grating according to the present invention is used together with a receiving frame. First, the structure of the receiving frame will be described with reference to FIGS. 1 and 2.
FIG. 1 is a perspective view of the receiving frame 1, and FIG. 2 is a top view.
The receiving frame 1 includes a receiving frame main body 11 that forms the side surface thereof, a pair of groove lid support plates 12 formed at both ends of the bottom surface, a drainage gap 13 that is a gap between the pair of groove lid support plates 12, concrete and the receiving frame 1. The anchor 14 and the two shaft pins 15L and 15R are provided to ensure the coupling with the shaft.

In the receiving frame main body 11, a grating 2 as a groove lid, which will be described later, is disposed.
A pair of groove lid support plates 12 are fixed to the left and right ends of the bottom surface of the receiving frame body 11 by welding or the like. The grating 2 is placed on the pair of groove lid support plates 12. A large gap 13 is provided between the pair of groove lid support plates 12, and rainwater or the like flows into the drainage groove main body from the gap 13.

  A pair of shaft pins 15L and 15R are fixed by welding or the like near the end portions of the left and right side surfaces of the receiving frame main body 11. The pair of shaft pins 15L and 15R have a central axis on substantially the same straight line, and are fixed so as to face each other. The pair of shaft pins 15 </ b> L and 15 </ b> R serves as a rotation shaft of the rotation opening / closing mechanism of the grating 2.

  Next, the configuration of the grating 2 that is a groove lid will be described with reference to FIGS. 3 to 5. 3 is a top view of the grating 2. FIG. 4 is a side partial view of the grating 2 viewed from the direction of arrow A in FIG. 3, and FIG. 5 is a side partial view of the grating 2 viewed from the direction of arrow B. Each is shown.

A pair of side bars 21 are provided at the left and right ends of the grating 2, and a plurality of cross bars 24 are provided between the pair of side bars 21 in parallel with them.
Although the interval between the crossbars 24 varies depending on the application, in the present embodiment, the arrangement pitch of the crossbars 24 is about 50 mm, which shows the most common coarse case.

  A pair of end bars 22 are provided substantially orthogonal to the pair of side bars 21. A plurality of bearing bars 23 are provided between the pair of end bars 22 in parallel to them. The top surfaces of the end bar 22 and the bearing bar 23 are subjected to uneven processing for preventing slippage.

  Note that the grating 2 is made slightly smaller than the receiving frame 1. This is to prevent the grating 2 from colliding with the inner surface of the receiving frame 1 when the grating 2 is rotated to open and close. Further, when the grating 2 is completely opened, the grating 2 can be opened approximately 110 degrees from the closed state (horizontal state), so that a person can keep the grating 2 open without supporting it. it can.

FIG. 4 shows an enlarged side view of the grating 2 as viewed from the direction of the arrow A. A bearing portion 25 that is an opening having a size through which the shaft pin 15 </ b> R passes with a margin is provided at a side surface end portion of the side bar 21. When the grating 2 is rotated and opened and closed, the bearing portion 25 abuts on the shaft pin 15R and serves as a bearing.
A shaft pin insertion opening 26 for inserting the shaft pin 15 </ b> R into the bearing portion 25 is provided at the side surface end portion of the end bar 22 adjacent to the bearing portion 25. When the grating 2 is attached to or detached from the receiving frame 1, the shaft pin 15 </ b> R is inserted or removed from the shaft pin insertion opening 26.

  On the other hand, FIG. 5 shows an enlarged side view of the grating 2 as viewed from the direction of the arrow B. In this place, only the bearing portion 27 having a size through which the shaft pin 15L passes with a margin is provided at the side surface end portion of the side bar 21, and the shaft pin insertion opening is not provided. The reason for this will be described later.

  Next, a method for attaching the grating 2 to the receiving frame 1 will be described with reference to FIG. In FIG. 6, for easy understanding, the entire receiving frame 1 is not shown, and only the shaft pins 15 </ b> L and 15 </ b> R of the receiving frame 1 are described.

  First, in FIG. 1, a person who performs the installation work stands on the other side of the receiving frame 1 (upper side of the receiving frame 1 in FIG. 2) and faces the side opposite to the side where the shaft pin insertion opening 26 is provided. And have grating 2. Then, the grating 2 is brought close to the shaft pins 15L and 15R of the receiving frame 1 so that the side surface on which the shaft pin insertion opening 26 is provided is lowered about 30 degrees from the horizontal.

At this time, as shown in FIG. 6, the grating 2 is moved in the direction of the arrow C while slightly lowering the side surface on which the bearing portion 27 is provided as compared with the side surface on which the bearing portion 25 is provided, and the shaft pin 15L Is inserted into the bearing portion 27. After the shaft pin 15L is inserted into the bearing portion 27, the shaft pin 15R is inserted from the shaft pin insertion opening 26 and pushed in the direction of arrow D until the shaft pin 15R reaches the bearing portion 25.
With the above operation, the shaft pin 15L is inserted into the bearing portion 27 and the shaft pin 15R is inserted into the bearing portion 25. Then, if the grating 2 is slowly placed on the groove lid support plate 12 of the receiving frame 1, the installation operation is completed.
When removing the grating 2 from the receiving frame 1, the reverse procedure may be performed.

  In the present embodiment, the shaft pin insertion opening 26 is provided only on one side. However, the shaft pin insertion opening may be provided on both sides, that is, the locations shown in FIG. In this case, there is an advantage that the attaching / detaching operation of the grating 2 can be performed more easily. However, there is a demerit that the grating is easily detached from the shaft pin when the grating is rotated. Therefore, it suffices to determine which configuration of the grating is used in consideration of the environment to be used, the frequency of maintenance, and the like.

  Further, in the present embodiment, as shown in FIG. 3, the description has been given of the grating in which the side bar 21 and the cross bar 24 are arranged vertically, and the end bar 22 and the bearing bar 23 are arranged horizontally. The side bar 21 and the cross bar 24 may be horizontally arranged, and the end bar 22 and the bearing bar 23 may be vertically arranged. In this configuration, the bearing portions 25 and 27 are provided on the side surface of the end bar 22, and the shaft pin insertion opening 26 is provided on the side surface of the side bar 21. Even if the grating is configured in this way, the same effect can be obtained.

Since the grating according to the present embodiment is configured as described above, since the grating can be rotated and opened during maintenance of the drainage groove, the maintainability is improved.
When attaching and detaching the grating, it is not necessary to push the shaft pin, etc., and it can be attached and detached by moving only the grating. Therefore, even if the grating is heavy, work alone and safely. Can be implemented.

Further, since the shaft pin may be fixed to the receiving frame, an expensive spring mechanism or the like is unnecessary, and the manufacturing cost of the receiving frame can be reduced.
Furthermore, there is no problem that the elastic modulus of the spring deteriorates over time or the spring mechanism breaks down due to vibrations caused by frequent passing of automobiles etc. on the groove lid, and there is no problem with the concrete for fixing the receiving frame. At the time of placing, there is no problem that concrete enters the shaft pin and the spring mechanism does not work.

  In this embodiment, the shaft pin insertion opening is provided on the side surface of the grating. However, the grating can be attached to and detached from the shaft pin even if the shaft pin insertion opening is provided on the bottom surface of the grating. However, in the following two viewpoints, it is advantageous to provide the shaft pin insertion opening on the side surface of the grating.

First, it is difficult for the grating to come off the shaft pin of the receiving frame when the grating is rotated.
When opening the grating, lift the side of the grating that does not have an opening for inserting the shaft pin. Therefore, it is difficult to lift the grating. Therefore, when opening the grating, an upward force is also likely to act on the side surface where the shaft pin insertion opening is provided. Therefore, when the shaft pin insertion opening is provided on the bottom surface of the grating, the shaft pin is easily removed from the shaft pin insertion opening and the grating is easily detached.
On the other hand, when the shaft pin insertion opening is provided on the side surface of the grating, the grating will not come off even if an upward force is applied to the side surface side where the shaft pin insertion opening is provided. When the grating is opened, the shaft pin insertion opening is on the lower side of the shaft pin, and the weight of the grating in a substantially vertical state works downward, so that it never comes off.

Second, when installing the grating, the shaft pin insertion opening is difficult to see.
This is because, when the grating is closed and the inside of the grating is viewed from directly above, the field of view is blocked by the bearing bar and the cross bar, and the shaft pin insertion opening provided on the side surface cannot be seen.
On the other hand, when the shaft pin insertion opening is provided on the bottom surface of the grating, the opening can be easily visually recognized from directly above.
Such a difficulty in visually recognizing the shaft pin insertion opening has a great effect on preventing theft of the grating. That is, the person who intends to steal cannot easily understand the mounting structure of the grating and cannot recognize that it is removable. In particular, since the grating is heavy, it is not easy to open the grating and confirm the structure, and the fact that the structure is difficult to understand in the installed state is a great merit for preventing theft.

Embodiment 2. FIG.
The configuration of the grating according to the present embodiment will be described with reference to FIGS.
An essential difference from the grating described in the first embodiment is only the interval between the bearing bars, and the same frame can be used for the receiving frame and the like. In the first embodiment, a parallel grating having a relatively large interval is shown, but in this embodiment, a fine grating having a bearing bar arrangement pitch of about 15 mm will be described.

  Fine gratings have the problem that gravel and garbage are easily caught, but the high-heel heels of women and the canes of elderly people are difficult to get caught, and wheelchairs are easy to pass, so there are many places where people are busy Widely used in

FIG. 7 is a top view of the fine grating, and FIG. 8 is a partial view of the grating side surface as viewed from the direction A in FIG.
First, as can be seen from FIG. 7, the bearing bars 23 are arranged at a narrow pitch. In FIG. 7, since the number of bearing bars is large, in order to make the drawing easier to see, only one bearing bar is provided with a lead line and a reference numeral “23”.

  Next, as shown in FIG. 8, as in the first embodiment, a bearing portion 25 and a shaft pin insertion opening 26 are provided. In the first embodiment, since the interval between the bearing bars 23 is wide, when the shaft pin 15R is inserted into the bearing portion 25 or when the shaft pin 15L is inserted into the bearing opening 27, the bearing Bar 23 did not get in the way. However, in the fine grating, since the bearing bar 23 is located in the immediate vicinity of the end bar 22, the shaft pins 15L and 15R cannot be inserted. Therefore, as shown in FIG. 8, it is necessary to provide notches in the bearing bar 23.

Here, since the cutout provided in the bearing bar 23 may be only the portion into which the shaft pins 15L and 15R are inserted, the upper surface portion and the lower surface portion of the bearing bar 23 can be left as they are.
Therefore, the cutout portion may be a small portion, and the rotation opening / closing mechanism can be realized without significantly reducing the strength of the bearing bar.

That is, since the grating according to the present invention does not require the pushing operation of the shaft pin when attaching / detaching, it is not necessary to provide a space for the pushing operation of the shaft pin, and the portion where the notch of the bearing bar is minimized. Can be.
Even in the case of the fine grating described in the present embodiment, the vertical and horizontal directions of the end bar 22 and the bearing bar 23 in FIG. 7 are interchanged so that the side bar 21 and the cross bar 24 are horizontal, and the end bar 22 and the bearing bar are horizontal. The same effect can be obtained by using a vertically arranged grating 23.

DESCRIPTION OF SYMBOLS 1 Receiving frame 11 Receiving frame main body 12 Grating support plate 13 Drain gap 14 Anchor 15L, 15R Axle pin

2 Grating 21 Side bar 22 End bar 23 Bearing bar 24 Cross bar 25 Opening for bearing 26 Opening for inserting shaft pin 27 Bearing portion

Claims (5)

A grating used with a receiving frame having a pair of opposed shaft pins,
The grating is
A pair of sidebars provided at both ends;
A pair of end bars that are substantially orthogonal to the pair of side bars and that form a substantially rectangular shape with the pair of side bars;
A plurality of bearing bars provided in parallel to the end bars inside the pair of end bars,
A plurality of cross bars provided in parallel to the side bars on the inside of the pair of side bars,
With
The pair of sidebars is provided with a pair of bearing portions that are openings that function as rotary bearings when the pair of opposed shaft pins are in contact with each other when the grating is rotated and opened.
A grating characterized in that a pair of shaft pin insertion openings, which are openings connected to the pair of bearing portions, are provided at both ends of the end bar adjacent to the pair of bearing portions. A grating used with a receiving frame having a pair of opposed shaft pins,
The grating is
A pair of sidebars provided at both ends;
A pair of end bars that are substantially orthogonal to the pair of side bars and that form a substantially rectangular shape with the pair of side bars;
A plurality of bearing bars provided in parallel to the end bars inside the pair of end bars,
A plurality of cross bars provided in parallel to the side bars on the inside of the pair of side bars,
With
The pair of sidebars is provided with a pair of bearing portions that are openings that function as rotary bearings when the pair of opposed shaft pins are in contact with each other when the grating is rotated and opened.
A grating characterized in that a shaft pin insertion opening, which is an opening connected to one of the pair of bearing portions, is provided at one end of the end bar adjacent to the pair of bearing portions. A grating used with a receiving frame having a pair of opposed shaft pins,
The grating is
A pair of sidebars provided at both ends;
A pair of end bars that are substantially orthogonal to the pair of side bars and that form a substantially rectangular shape with the pair of side bars;
A plurality of bearing bars provided in parallel to the end bars inside the pair of end bars,
A plurality of cross bars provided in parallel to the side bars on the inside of the pair of side bars,
With
The pair of end bars are provided with a pair of bearing portions that are openings that contact the pair of opposed shaft pins when the grating is rotated and opened and functions as a rotary bearing,
A grating, wherein a pair of shaft pin insertion openings, which are openings connected to the pair of bearing portions, are provided at both ends of the side bar adjacent to the pair of bearing portions. A grating used with a receiving frame having a pair of opposed shaft pins,
The grating is
A pair of sidebars provided at both ends;
A pair of end bars that are substantially orthogonal to the pair of side bars and that form a substantially rectangular shape with the pair of side bars;
A plurality of bearing bars provided in parallel to the end bars inside the pair of end bars,
A plurality of cross bars provided in parallel to the side bars on the inside of the pair of side bars,
With
The pair of end bars are provided with a pair of bearing portions that are openings that contact the pair of opposed shaft pins when the grating is rotated and opened and functions as a rotary bearing,
The grating characterized in that an opening for inserting a shaft pin, which is an opening connected to one of the pair of bearing portions, is provided at one end of the side bar adjacent to the pair of bearing portions. It is a fine grating to prevent pinching of high heel wrinkles,
5. A notch for passing the pair of opposed shaft pins is provided in a portion excluding the front surface portion and the back surface portion of the bearing bar in the vicinity of the pair of bearing portions. The grating according to any one of the above.