JPH0234284Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a structure for fixing a toilet bowl and a tank in a tank-tight toilet bowl in which a tank is placed and fixed on the rear upper surface of the toilet bowl.

(Prior art) The fixing structure between the toilet bowl and the tank in a conventional tank-closed toilet bowl is as shown in FIGS. Place the bolt shaft 1 on the rear upper surface of the toilet bowl A, insert the bolt shaft 1 into the mounting hole 2 provided in the toilet bowl A, screw the nut 6 onto the bolt shaft 1 from the bottom surface of the toilet bowl A, and tighten it to secure the bottom of the tank B. Tank B and toilet A were fixed by drawing the wall toward the top of toilet bowl A.

However, since the toilet bowl is installed in the corner of the toilet, with the fixed structure described above, it is difficult to thread the nut onto the bolt shaft at the bottom rear of the toilet bowl, and it is difficult to tighten the nut with a tool such as a spanner. The problem was that it was difficult to apply and the workability was poor.

(Problem to be solved by the invention) The problem to be solved by the invention is to improve workability by allowing the nut to be screwed onto the bolt shaft from the top side, which is easier to work with. .

(Means for solving the problem) The technical means taken by the present invention to solve the above problem is that in a tank-tight toilet where the tank is placed and fixed on the rear upper surface of the toilet, the tank is placed on the rear upper surface of the toilet. A bolt shaft is set upright, a mounting hole is provided in the bottom wall of the tank through which the bolt shaft is inserted, one end of the screw hole is closed in the bolt shaft that is inserted through the mounting hole, and a packing is attached to the lower surface of the flange provided on the outer periphery. A nut provided with this is screwed together from inside the tank, and by screwing and tightening this nut, the bottom wall of the tank is pressed against the top surface of the toilet bowl, thereby fixing the tank to the toilet bowl.

(Function) Therefore, the screwing and tightening of the nut onto the bolt shaft is performed from the top side, which is easier to work with.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the figure, B is a tank and A is a toilet bowl, and the tank B is placed on the rear upper surface of the toilet bowl A.

A wash water supply port 7 is provided on the rear upper surface of the toilet bowl A on which the tank B is placed, and a bolt insertion hole 8 is also bored therein, and the bolt shaft 1 is erected through the bolt insertion hole 8.

That is, the bolt insertion hole 8 is formed in the shape of a circular hole, while the shaft portion of the bolt shaft 1 is formed with a slightly smaller diameter than the bolt insertion hole 8.
The bolt is inserted into the bolt insertion hole 8 from the lower side, and the lock nut 9 is screwed into the bolt through the washer 13 from the upper side of the toilet bowl A to fix it upright on the toilet bowl A.

The tank B has a wash water outlet 10 corresponding to the wash water inlet 7 of the toilet bowl A on the bottom wall, and a gasket 11 is interposed between the wash water outlet 10 and the periphery of the wash water inlet 7. At the same time, a mounting hole 2 is opened corresponding to the bolt insertion hole 8, and a bolt shaft 1 installed upright on the toilet bowl A is inserted into the mounting hole 2.

The mounting hole 2 is formed to have a slightly larger diameter than the shaft portion of the bolt shaft 1, and the bolt shaft 1 is inserted through the mounting hole 2 with a loose fit and projects slightly into the tank B.

Then, a nut 6 is screwed onto the bolt shaft 1 from inside the tank B.

Therefore, by tightening the nut 6, the bottom wall of the tank B is pressed against the toilet bowl A and fixed, and the gasket 11 interposed between the periphery of the flush water outlet 7 and the flush water supply port 10 is attached to both the mouths 7. , 10 and tightly adheres to the area, completely sealing the area.

The nut 6 has a screw hole 3 opened on the lower surface and closed on the upper surface, and has a flange 4 on the outer circumferential surface at the midway point in the axial direction.
An annular flat packing 5, which also has a larger diameter than the mounting hole 2, is mounted on the lower surface side of the flange 4 via a washer 12, which has a larger diameter than the mounting hole 2.

When the nut 6 is screwed onto the bolt shaft 1, the packing 5 is tightly attached to the lower surface of the flange 4 of the nut 6 and the upper surface of the peripheral edge of the mounting hole 2, thereby sealing these parts.

Note that 14 in the figure is a groove for engaging a tool such as a screwdriver.

Next, FIGS. 3 to 5 show other embodiments of the present invention.

In this embodiment, a so-called triangular packing having an upside-down conical shape is used as the packing 5 to be attached to the nut 6. If the bolt shaft 1 is not positioned accurately at the center of the mounting hole 2, the packing 5 will tilt. ,
Even if the bolt shaft 1 is not positioned exactly at the center of the mounting hole 2, the bolt shaft 1 will move slightly toward the center of the mounting hole 2 as the gasket 5 is bitten into the mounting hole 2 by tightening the nut 6. The bolt shaft 1 is temporarily fixed to the toilet bowl A by loosening the lock nut 9 so that the position can be moved.

In addition, since the bolt shaft 1 is loosely fixed temporarily to the toilet bowl A as described above, the bolt shaft 1 and the bolt insertion hole 8 of the toilet bowl A are connected so that the bolt shaft 1 does not rotate when the nut 6 is tightened. A rotation prevention part 15 is provided.

The rotation prevention portion 15 is formed by forming the lower half of the bolt insertion hole 8 to have a rectangular cross section, and when the bolt shaft 1 is inserted into the bolt insertion hole 8, the bolt insertion hole 8 of the shaft 1 is formed to have a rectangular cross section. A section corresponding to the section is formed into a rectangular section. It goes without saying that this rotation preventing portion 15 may also be provided in the first embodiment (FIG. 2).

Since the present invention has the above configuration, it has the following advantages.

Since the nut is screwed onto the bolt shaft on the top side of the tank bottom wall, the work is easy and workability is good.

The nut, which is screwed onto the bolt shaft from inside the tank, closes one end of the screw hole and has a packing on the lower surface of the flange provided on the outer periphery, so when the nut is tightened, the packing is attached to the periphery of the mounting hole on the bottom wall of the tank. By tightly fitting, the water in the tank will not come into contact with the threaded portion, and the threaded portion of the bolt shaft and nut will not corrode. Moreover, water inside the tank does not leak from the bolt shaft attachment part.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a fixing structure between a toilet bowl and a tank showing one embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main parts, and Fig. 3 is an enlarged sectional view of the main parts showing another embodiment. , Fig. 4 is a sectional view taken along the - line in Fig. 3, Fig. 5 is a sectional view taken along the - line in Fig. 3, Fig. 6 is a sectional view showing the conventional toilet and tank fixing structure, and Fig. 7 is a sectional view taken along the - line in Fig. 3. FIG. A... Toilet bowl, B... Tank, 1... Bolt shaft,
2... Mounting hole, 3... Screw hole, 4... Flange, 5...
...Patsukin, 6...Natsuto.

Claims (1)

[Scope of utility model registration request] In a tank-closed type toilet in which a tank is placed and fixed on the rear upper surface of the toilet bowl, a bolt shaft is installed upright on the rear upper surface of the toilet bowl where the tank is placed, and a mounting hole is provided in the bottom wall of the tank through which the bolt shaft is inserted, A nut with a gasket on the lower surface of the flange that is provided on the outer periphery of the bolt shaft that has been inserted through the mounting hole is screwed into the tank from inside the tank with one end of the screw hole closed and the bottom wall of the tank fixed by tightening the nut. A toilet and tank fixing structure in which the tank is fixed to the toilet by pressing it against the top of the toilet.