JPH0217096Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a pool drain cover that is placed over a drain that serves as a catchment for swimming pools in schools, leisure facilities, sports clubs, etc.

<Prior art> In general, a swimming pool has a catch basin, ie, a drainage hole, at the bottom for cleaning, draining, etc., and the opening is covered with a lid of a predetermined shape to prevent danger. ing. However, recently I have been forgetting to put this lid on.
Accidents have often occurred in which children are sucked into this hole due to mischief, such as removing the lid.

<Problems to be solved by the invention> In view of the above-mentioned circumstances, the present invention is of a width-adjustable type that fits drains of various sizes, is not easily removable, and does not get sucked in even if it is a part of the body. The object of the present invention is to provide a pool drain cover that allows the cover to be fitted without any gaps.

<Means for solving the problem> The present invention provides a drain cover that is placed on a square drain that serves as a water collection basin, with a square drain cover that is sized to fit into the recess grooves placed on the four sides of the square drain. A lattice lid body is formed, and the lattice lid body is divided into four equal parts in the shape of a cross, and a sliding type small lattice lid piece is arranged on the upper surface of each of them, and parallel to the outer two pieces of each of the small lattice lid pieces. A guide pin inserted through a long guide groove provided in the lattice lid body is connected to a corner of a screen-like lid frame portion provided on the bottom surface of the lattice lid body that can be freely extended outward on each side, and the small lattice lid side is used as a base. The lattice lid can be freely extended onto the diagonal line of the lattice lid body.

<Function> Due to the above-mentioned configuration, when installing the drain outlet with the minimum width, the small lattice cover pieces arranged on all sides do not extend out relative to the lattice cover body; in other words, the four small lattice cover pieces One side fits on the surface of the lattice lid main body to have the minimum area, and at this time, as the small lattice lid piece recedes, the screen-like lid frame does not protrude beyond the edge of the lattice lid main body, and therefore has approximately the same size as the lattice lid main body. Can be worn over the drain. In addition, in the case of a drain with a large diameter, if the screen-like lid frame is moved forward and backward, left and right, the small lattice lid piece with both ends connected to the screen-like lid frame can be changed to a lattice lid. These four small lattice lid pieces and four screen-like lid frames form a kind of outer flange structure on the four sides of the lattice lid body, allowing drainage with a large diameter. The small lattice cover pieces can be securely placed and fitted into the drain port, and each small lattice cover piece is fixed integrally by threading a guide pin having a screw structure, so that it can be firmly fixed to the drain port.

<Example> Hereinafter, the present invention will be described in detail based on the drawings of the example.

Reference numeral 1 denotes a square lattice lid body with an appropriate number of bars 2 across the top surface, and 4 cross-shaped bars 2 on the lattice lid body 1.
Slide-type small lattice lid pieces 3, 3, 3, 3 are arranged at each equally divided surface position, and guide long grooves 4, 4 parallel to the two outer sides of the small lattice lid piece 3 are arranged.
The guide pins 5, 5 inserted into the long guide grooves 4, 4 are inserted through the support leg 7 and the frame piece 8, which are inserted into the guide pipe 6 arranged in a lattice pattern at the bottom of the lattice lid main body 1. It is planted and fixed in the corner 9a of the screen-like lid frame 9. In this case, the groups of guide pipes 6a and 6b arranged vertically and horizontally on the lattice cover body 1 are arranged in vertical and vertical positions, respectively, so as not to interfere with the support legs 7 inserted into the guide pipes 6, respectively. There is.
Further, among the many support legs of each screen-like lid frame 9, a plurality of them are used as screw shafts 7a, and a nut 10 screwed thereto is brought into contact with the frame surface 1a of the lattice lid main body 1 to fix the feeding position. It is something to do. Further, the height l of the screen-like lid frame portion 9 including the small lattice lid piece 3 is approximately equal to the depth of the step groove Aa of the drain port A.

Next, when using this drain outlet cover 11, first attach the small lattice cover pieces 3, 3, 3, 3 arranged on all sides to the lattice cover body 1 as shown in FIG. The lattice-like lid frame portions 9, 9, 9, 9 are also pushed into the lower part of the lattice lid main body 1 while being stored on the upper surface. In this state, drain cover 1
1 into the step groove Aa of a predetermined drain A, and with the frame pieces 8 of each screen-like lid frame 9 pressed against the four surrounding walls of the drain A, insert the nut 10 of 7A onto the screw shaft on the frame surface. By inserting the screw into 1a and tightening it, the drain cover 1
1 is firmly fixed to the drain port A.

Next, when installing the drain port A whose diameter is larger than the specified size, the four small lattice cover pieces 3, 3, 3,
3 to the outside on the diagonal line of the lattice lid main body 1. In this case, first, the grid-like lid frame parts 9 housed in each side 1a of the lattice lid main body 1 are moved outward. When the supporting legs 7 are slid and paid out, the small lattice cover piece 3 connected to the screen-like cover frame 9 is fed out in conjunction with the guide pins 5 sliding in the long guide grooves 4.

Therefore, while dropping the drain opening cover 11 with the screen-like cover frame parts 9, 9, 9, 9 and the small lattice cover pieces 3, 3, 3, 3 projecting from the outer periphery into the step groove Aa of the drain opening A, By screwing the nut 10 of the screw shaft 7a into the frame surface 1a and tightening it while pressing the frame piece 8 of each screen-like lid frame part 9 against the inner wall surface of the drain port A, each screen-like lid frame part 9 is connected to the drain port A. firmly fixed to the wall.

<Effects of the invention> As described above, the pool drain cover of the present invention includes a lattice cover main body having a minimum specified width, a small lattice cover piece that can be freely extended in all directions of the lattice cover body, and a small lattice cover. By making it a foldable type that combines a screen-like lid frame that is pulled out in conjunction with the unwinding of the pieces, it can be installed not only in specified drains, but also in large-diameter drains. Since the small lattice lid piece and screen-like lid frame are extended and drawn out over the entire outer periphery of the lid, a reliable closing lid with no gaps is formed. Moreover, by tightening the nut on the screw shaft of the screen-shaped lid frame, it becomes immovable relative to the drain outlet, and even if an unscrupulous person is underwater and tries to lift the lid, it will not come off, preventing accidental drowning. It can be prevented.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention: Fig. 1 is a plan view, Fig. 2 is a bottom view, Fig. 3 is a bottom view showing the support legs of the screen-like lid frame, and Fig. 4 is a small lattice. A plan view with the lid piece extended, Figure 5 is a side view of the same, Figure 6 is a side view of the same.
The figure is a plan view of the device in use. 1... Square lattice lid body, 2... Crosspiece, 3... Small lattice cover piece, 4... Guide slot, 5... Guide pin,
6... Guide pipe, 7... Support leg, 7a... Screw shaft, 8... Frame piece, 9... Screen-like lid frame, 10...
Natsuto, A... drain.

Claims (1)

[Scope of utility model registration request] In a drain cover that is placed on a square drain that serves as a water collection basin for a pool, a square lattice cover body that fits into the recessed groove of the drain is formed, and the lattice cover body is
A sliding small lattice lid piece is arranged on the top surface of each of the equally divided pieces, and guide pins inserted into guide grooves provided on two outer sides of each of the small lattice lid pieces are provided on the bottom surface of the lattice lid body. A pool drain cover is characterized in that it is connected to a corner of a screen-like cover frame that can be freely drawn out.