HK1121791B - Toilet bowl flushing water tank device - Google Patents

Description

Toilet flushing water tank device

Technical Field

The present invention relates to a toilet flush tank device in which a drain button can largely act on a drain valve body through a lever device.

Background

Conventionally, as described in patent document 1, a toilet flush water tank device is known in which: a drain valve device which moves the drain valve body up and down relative to the drain outlet to perform the function of opening and closing the valve; and a lever device interposed between the drain valve device and a drain button provided on the tank cover.

The lever device provided in the conventional toilet flush water tank device is composed of a bracket provided between the drain valve body device and the button, and a link pivotally supported at the upper end of the bracket, having one end coupled to the button and the other end coupled to the drain valve body, wherein the link is rotated about a pivot point of the bracket by pressing the button, so that one end of the link on the button side, which becomes a force point, is pressed downward and rotated, and the other end of the link on the drain valve body side, which becomes an action point, is rotated upward, so that the drain valve body is pulled up to open the drain port and flush water is discharged.

[ patent document 1] Japanese Kokai Sho-52-69841 publication

Disclosure of Invention

However, in the lever device provided in the conventional toilet flush water tank device, the pivot point of the link and the bracket is disposed at a position closer to the drain valve device than the button, and the distance from the pivot point to the operating point is shorter than the distance to the force point, so that the amount of lifting up the drain valve body when the button is pressed is also limited to be small, and the drain diameter can only be set to be small as the space between the drain valve device and the lever device becomes narrow, and as a result, the instantaneous drain capacity becomes small, and the drain capacity is lowered.

In recent years, from the viewpoints of effective use of a toilet space, improvement in decorativeness, and the like, the height of a toilet flush tank is often suppressed low, and the head pressure is reduced by lowering the stored water level in the flush tank. Therefore, when the above-described conventional lever device is used, the amount of lifting of the drain valve body and the drain diameter are limited, and therefore the water potential of flush water supplied to the toilet is reduced, and a desired drainage capacity cannot be ensured.

Accordingly, an object of the present invention is to provide a toilet bowl flush water tank device capable of opening a drain valve body instantaneously to a large extent, ensuring a relatively wide space in the vicinity of the drain valve device, and improving the drainage capacity with a small force.

In order to achieve the above object, the present invention provides a toilet bowl flush water tank device in which a discharge valve device that moves up and down with respect to a discharge valve body of a discharge port and a lever device that is linked to the discharge valve device are housed in a flush water tank body having the discharge port at the center, and a button that is linked to the lever device in the flush water tank body is provided on a tank lid of the flush water tank body, wherein the button is configured to be disposed at a position that is offset to one side with respect to the position of the discharge port, the lever device is configured by a link that is linked to the discharge valve body and a bracket that pivotally supports the link on the way, and the bracket is configured to pivotally support the link on the way at a position closer to the button than the discharge valve device, and a bracket support rod that connects a lower part of a casing of the discharge valve device and a lower part of the bracket of the lever device, one end of the support shaft is an embedded structure which can be freely assembled and disassembled at the lower part of the shell, the other end is provided with a support shaft which can be embedded into the insertion hole of the bracket in a vertical direction, and the support shaft is embedded and fixed in the insertion hole to move for a preset length in the vertical direction.

The invention has the following effects: the support stay for connecting the lower part of the casing of the water discharge valve device and the lower part of the support of the lever device is configured in a manner that one end is an embedding structure which can be freely assembled and disassembled on the lower part of the casing, the other end is provided with a support shaft which can be embedded into an insertion hole at the lower end of the support, and the support shaft is embedded and fixed in the insertion hole and can move for a preset length in the vertical direction, therefore, the vertical error generated along with the vertical position setting of the support can be eliminated.

Drawings

Fig. 1 is a perspective view showing a schematic configuration of a toilet equipped with a toilet flush water tank device to which the present invention is applied.

Fig. 2 is a sectional front view showing a state before a water discharge operation of the toilet flush water tank device shown in fig. 1.

Fig. 3 is a sectional front view showing a state in a water discharge operation of the toilet flush water tank device shown in fig. 1.

Fig. 4 is an exploded perspective view as seen from the front of a lever device 40 provided in the toilet flush water tank device shown in fig. 1.

Fig. 5 is an exploded perspective view as viewed from the rear of the lever device 40 provided in the toilet flush water tank device shown in fig. 1.

Description of the symbols

10a inner bottom surface of flushing cistern body

11 water tank cover

12 water discharge outlet

30 water discharge valve device

31 casing (drainage guide cylinder)

35 drain valve body

40 lever device

50 push button

41 connecting rod

42 support

42a is inserted into the hole

43 tripod

43a left and right branch foot body

43b central back foot

49 connecting rod driven part (connecting rod driven disk)

62 adjusting washer

64 regulating block (height regulating mechanism)

65 support stay bar

65b support shaft

Detailed Description

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing a schematic configuration of a toilet a equipped with a toilet flush tank apparatus 100 to which the present invention is applied; fig. 2 is a sectional front view showing a state before a draining operation of the toilet flush water tank apparatus 100; fig. 3 is a sectional front view showing a state in a water discharge operation of the toilet flush water tank device 100 shown in fig. 1.

As shown in fig. 1 to 3, a toilet flush tank device 100 according to the present invention is a device that is attached to the rear of a toilet main body B of a toilet a and is provided for supplying flush water to the toilet main body B, and the toilet flush tank device 100 is configured by: a flush tank body 10 for storing flush water to be supplied to the toilet a; a water supply device 20 housed in the flush tank body 10 and supplying water to the tank body 10; a discharge valve device 30 which is housed in the flush tank body 10 and discharges water stored in the tank body 10 to the toilet bowl a; a lever device 40 housed in the flush tank body 10 and linked with the drain valve device 30; and a button 50 disposed at the right side of the tank cover 11 and linked with the lever device 40. In fig. 1, C is a corrugated pattern applied to the upper surface of the tank cover 11 of the flush tank body.

The flush tank body 10 is formed in a substantially flat box shape, and stores water supplied from a water supply source (not shown) and discharges the flush water to the toilet seat body B. Meanwhile, a drain port 12 is provided at the center of the inner bottom surface 10a of the tank body 10, a tank lid body 11 is openably closed at an upper opening portion of the flush tank body 10, and a button 50 is disposed at a right side portion of the tank lid body 11. That is, the button 50 is disposed at a position offset to one side from the position of the drain opening 12.

Further, a water supply device 20 for supplying water to the inside of the tank body 10 is housed in the flush tank body 10, and the water supply device 20 includes: a water supply pipe 21 vertically installed at the left side in the washing water tank body 10, and having a lower end connected to a water supply source; a water supply valve 22 provided at the upper end of the water supply pipe 21 and capable of switching between water discharge and water stop toward the flush tank body 10; a float part 23 which performs switching operation of water spouting and water stopping of the water supply valve 22 by moving up and down according to fluctuation of the water level in the flush tank body 10; and a water discharge pipe (not shown) for discharging water from the water supply valve 22. At the same time, a joint 24b is provided at the tip of the fill pipe 24 extending from the water supply device 20, and this joint is inserted into a fill pipe holding portion 24a described later, so as to be opposed to an opening portion 33a at the upper end of an overflow pipe 33 of the water discharge valve device 30 and communicate with the drain port 12 of the flush tank body 10.

The drain valve device 30 will be explained below.

A drain guide tube 31 serving as a housing of the drain valve device 30 is fitted to an inner peripheral surface of a drain port 12 provided at the center of the flush tank body 10 in a state of being erected inside the flush tank body 10, a float housing cylinder 32 is integrally connected to an upper portion of the drain guide tube 31, and an overflow pipe 33 is housed in the center of the guide tube 31 and the float housing cylinder 32 so as to be vertically movable. The overflow pipe 33 is provided with a float 34 on its peripheral surface, and the overflow pipe 33 is lifted and lowered in accordance with the lifting and lowering of the float 34.

A drain valve body 35 for opening and closing the drain port 12 is provided at the lower end of the overflow pipe 33, and the drain valve body 35 is configured to be in free contact with a drain port valve seat 36 formed on the lower inner peripheral surface of the drain guide tube 31. Accordingly, the overflow pipe 33 is raised, the drain valve body 35 at the lower end is separated from the drain valve seat 36, and drainage is started by opening the drain port 12, while the overflow pipe 33 is lowered, and the drain valve body 35 at the lower end is brought into close contact with the drain valve seat 36, and drainage is stopped by closing the drain port 12. That is, the drain valve body 35 is moved up and down within the drain guide cylinder 31 in a range above the drain valve seat 36.

Meanwhile, water inlet windows 31a are opened in four side surfaces of the peripheral wall of the drain guide cylinder 31 corresponding to the elevating range of the drain valve body 35. In the opened state of the drain port 12, that is, in the state where the drain valve body 35 is separated from the drain port valve seat 36 to open the drain port 12, the flush water in the flush tank body 10 flows into the drain guide pipe 31 through the water inlet window 31a and is discharged from the drain port 12.

In fig. 2 and 3, 37 is a connecting stay attached to the upper end of overflow pipe 33, and transmits the buoyancy of float 34 to overflow pipe 33. Reference numeral 38 denotes a guide tube erected at the center of the bottom in the float accommodating cylinder 32, and guides the ascending and descending of the overflow pipe 33. Reference numeral 39 denotes a sealing member interposed between the lower portion of the drain guide cylinder 31 and the inner bottom surface 10a of the flush tank body 10, and the drain guide cylinder 31 can be tightly fitted to the drain port 12. Reference numeral 24a denotes a fill pipe holding portion which is provided upright on the peripheral wall of the float accommodating cylinder 32 of the water supply device 20 and holds the fill pipe 24 above the overflow pipe 33.

The lever device 40 will be explained below. The lever device 40 is composed of a link 41 having one end 41a engaged with the upper end of the overflow pipe 33 of the water discharge valve device 30 and the other end abutting against the button 50, and a bracket 42 pivotally supporting the link.

That is, one end of the link 41, that is, the operating point 41a of the lever opens and closes the drain valve body 35 through the overflow pipe 33, the other end of the link 41, that is, the force point 41b of the lever, abuts on the push button 50 disposed on the right side portion of the tank cover 11 of the flush tank body 10, the link 41 is operated by pressing the push button 50, and the pivot portion on the way of the link 41, that is, the fulcrum 41c of the lever, supports the way of the link 41 on the bracket 42.

Fig. 4 is an exploded perspective view seen from the front of the lever device 40; fig. 5 is an exploded perspective view seen from the rear of the lever device 40. As shown in fig. 4 and 5, the support 42 on the way of the pivot link 41 has a tripod 43 like a human figure, which is composed of left and right branch leg bodies 43a branched left and right at the lower part of the support and a central rear leg body 43b extended rearward of the branched center, and is configured to pivot the link 41 on the way at the upper end of the support. The left and right branch leg bodies 43a are disposed at positions contacting the inner bottom surface 10a of the flush tank body 10 below the action point 41a side of the link 41, and the center rear leg body 43b is disposed at a position contacting the inner bottom surface 10a of the flush tank body 10 below the force point 41b side of the link 41. The tripod 43 can ensure the stability of the lever device 40 by disposing the left and right branch leg bodies 43a and the central rear leg body 43b at the above-described grounding position.

In this way, the lever device 40 is positioned between the water discharge valve device 30 and the push button 50, and the fulcrum 41c, which is the pivot portion of the link 41, is disposed at a position closer to the push button 50 side than the water discharge valve device 30, so that the stroke of the force point 41b of the push button 50, which is leveraged by the link 41, is made small, and the stroke as the action point 41a is made large by the fulcrum 41c of the pivot portion to act on the water discharge operation of the water discharge valve device 30, and the instantaneous maximum amount of water can be ensured with respect to the flush water discharged from the water discharge port 12.

Further, since the pivot 41c, which is the pivot portion of the link 41, is disposed on the button 50 side of the water discharge valve device 30, a relatively wide space between the water discharge valve device 30 and the lever device 40 can be secured, the diameter of the water discharge port 12 can be relatively widely used, and the water discharge capacity can be improved.

In particular, since the space between the water inlet window 31a of the discharge valve device 30 and the tripod 43 of the lever device 40 is made wide, the washing water can easily flow into the drain guide cylinder 31 through the water inlet window 31a of the tripod 43 side of the lever device 40, and thus the drainage capacity can be further improved.

In the figure, 44 is a shaft hole formed in the middle of the link 41, 45 is a flange fork erected on the upper end of the bracket 42, and 46 is a support shaft bridging between the flanges 45 for pivotally supporting the link 41 between the flange forks 45 on the upper end of the bracket 42 through the shaft hole 44 of the link 41.

A fork-shaped fork portion 47 is formed at one end (action point 41a) of the link 41 located on the overflow pipe 33 side, and an upper end arm portion (not shown) of the overflow pipe 33 is held and engaged between the two forks of the fork portion 47. On the other hand, the other end (force point 41b) of the link 41 located below the push button 50 is formed with a longitudinal insertion hole 48, a link receiving plate 49 serving as a link receiving portion having a disk shape is mounted on the upper end thereof, and a support 61 is suspended below the link receiving plate 49. The other end (force point 41b) of the link 41 and the link receiving plate 49 are fixed by being locked at an arbitrary position of a peripheral groove 61a provided below the strut 61 by a retainer 68 in a state where the strut 61 is inserted into the insertion hole 48.

By detachably attaching a plurality of adjustment washers 62 to the peripheral surface of the support 61, the adjustment washers 62 can be interposed between the open upper end surface of the insertion hole 48 and the link receiving plate 49, and the vertical position of the link receiving plate 49 with respect to the attachment of the link 41 can be adjusted. In this way, by adjusting the vertical position of the link receiving plate 49 with respect to the attachment of the link 41, the relative positional relationship between the button 50 and the link receiving plate 49 can be adjusted, and the timing of contact between the button 50 and the link receiving plate 49 can be adjusted.

The lower end of the tripod 43 is a rectangular mounting portion 63 in cross section along the inner bottom surface 10a of the flush tank body 10, and a height adjustment mechanism is provided on the mounting portion 63. The height adjusting mechanism is constituted by an adjusting block 64 formed in a hollow rectangular frame shape that is freely fitted around the outer periphery of the mounting portion 63 having a rectangular cross section, and four side walls 64a, 64b, 64c, and 64d of the hollow rectangular frame of the adjusting block 64 are configured to have different thicknesses. Therefore, when the adjustment block 64 is fitted to the mounting portion 63, the gap between the mounting portion 63 and the inner bottom surface 10a of the flush tank body 10 can be adjusted by selecting any one of the thicknesses of the four side walls 64a, 64b, 64c, and 64d located below, and finally the gap between the respective legs 43a and 43b of the tripod 43 and the uneven level of the inner bottom surface 10a can be adjusted, so that the unstable balance of the height between the legs of the tripod 43 can be adjusted, and the height of the entire bracket 42 can be finely adjusted.

Further, a holder stay 65 is interposed between the drain guide cylinder 31 of the drain valve device 30 and the lever device 40, and the lower portion of the drain guide cylinder 31 of the drain valve device 30 and the lower portion of the holder 42 of the lever device 40 are connected to each other, and the interval therebetween can be maintained at a constant distance. That is, an insertion hole 42a for inserting the support shaft 65b from below is opened at the lower end of the bracket 42, that is, the lower end of the strut. On the other hand, the bracket stay 65 has one end serving as an engagement hole 65a which is freely engaged with a projection 31b formed on the lower side wall of the drain guide cylinder 31, and has the other end provided with a support shaft 65b which is freely engaged with an insertion hole 42a formed in the lower end of the bracket 42, that is, the lower end of the strut. The support shaft 65b is a strip-like body having an inverted U-shape at the upper end, and the width of the strip-like body is tapered toward the upper end of the support shaft 65 b. The support shaft 65b is formed in the tapered shape, and is fitted to the inner peripheral surface of the insertion hole 42a with a predetermined clearance, which eliminates the inclination of the holder stay 65 generated when the vertical position of the holder 42 is set.

An insertion hole 42a for inserting the support shaft 65b from below is opened at the lower end of the bracket 42, i.e., the lower end of the strut.

Therefore, in order to interpose the holder stay 65 between the drain valve device 30 and the lever device 40, first, the projection 31b of the drain guide cylinder 31 of the drain valve device 30 is fitted into and connected to one end of the stay 65, and the support shaft 65b of the other end of the stay 65 is inserted into the insertion hole 42a formed in the lower end of the holder 42, thereby interposing the holder stay 65. A transverse hole 42b is bored in the lower side wall of the bracket 42, a separately provided insertable pin 66 is inserted into the transverse hole 42b, and is engaged with an elongated hole-shaped engaging hole 65c bored in the support shaft 65b previously fitted into the insertion hole 42a of the bracket 42, thereby preventing the support shaft 65b erected on the bracket stay 65 from coming off. Although the support shaft 65b is prevented from coming off, the engagement hole 65c is formed in an elongated hole shape, and the support shaft 65b is fitted and fixed to the insertion hole 42a so as to be swingable in the vertical direction by a predetermined length, that is, a hole width of the engagement hole 65 c. In this state, the support shaft 65b is fitted into and fixed to the insertion hole 42a, so that an error in the vertical direction caused by the vertical position setting of the bracket 42 can be eliminated.

In the figure, 67 is an engaging pin 67 connected in parallel to the pin 66 on both sides of the base of the pin 66, and the tip thereof protrudes as an engaging projection 67a, and when the pin 66 is inserted into the lateral hole 42b, the engaging pins 67 on both sides are fitted into groove portions 42c cut in both side walls of the holder 42, and the engaging projection 67a engages with the side wall of the holder 42 in the depth of the groove portion 42c, thereby inserting and fixing the pin 66.

Next, the push button 50 linked to the lever device 40 will be described.

As shown in fig. 1 to 3, the push button 50 is disposed on the right side of the tank cover 11 of the flush tank body 10, i.e., on the right side of the position of the drain port 12, as described above. A button insertion hole 51 is formed in the tank lid 11, a bottomed button case 52a having an engagement flange 52 at the upper end edge in a cylindrical shape is suspended from the hole 51, and a nut 53 is screwed to an external thread on the peripheral surface of the button case 52a to fix the engagement flange 52 to the tank lid 11. A button body 54 is inserted into the case 52a, and a spring 55 is interposed between the button body 54 and the inner bottom surface of the button case 52 a. A push rod 56 is provided to hang from the lower surface of the button body 54, an abutting member 57 is provided at the lower end of the push rod 56, and the abutting member 57 is configured to be in free abutment with a link receiving plate 49 provided at one end of a link 41 of the lever device 40.

[ description of operation ]

As shown in fig. 2, in a state where the drain port 12 is closed, that is, in a state where the drain valve body 35 is seated on the drain port valve seat 36 of the drain guide cylinder 31, the link 41 of the lever device 40 is in a state of abutting against the abutting member 57 of the button body 54, and the flush water is in a full state where the flush water reaches a predetermined position in the flush tank body 10.

In the above state, if the button body 54 is pressed, the contact member 57 presses the link receiving plate 49, and as shown in fig. 3, the link 41 of the lever device 40 is inclined so that the left end thereof rises around the pivot portion 41 c. A fork-shaped fork 47 provided at one end of the link 41 engages with the peripheral wall of the overflow pipe 33 and pulls up the pipe. The float 34 is also pulled up together with the pipe 33, and the drain valve body 35 at the lower end of the pipe 33 is also pulled up in the drain guide cylinder 31, so that flush water is discharged from a predetermined water inlet window in the peripheral wall of the drain guide cylinder 31 to the drain port 12.

The pressed button body 54 is restored by the spring 55, the overflow pipe 33 in the temporary drainage state with the drainage valve body 35 opened is still in the raised state by the buoyancy of the float 34, the float 34 continues to descend until the float 34 descends to the dead water level position as drainage occurs, and the link 41 also approaches the link position in the closed state of the drainage port 12, and the link 41 returns to the position in the tank full state before drainage starts when the drainage valve body 35 closes the drainage port 12 (see fig. 2).

In this way, the push button 50 rotates the link 41 about the pivot portion 41c, and when the opening and closing operation of the drain valve body 35 interposed between the overflow pipe 33 is performed, the pivot portion 41c of the link 41 is provided at a position closer to the push button 50 side than the drain valve device 30, and as a result, the distance from the pivot portion 41c of the link 41 to the action point 41a as a lever of the link 41 is longer than the distance from the force point 41b of the link 41. Accordingly, the one end of the rod of the operating point 41a is largely operated by the small depression amount (stroke) of the push button 50, the overflow pipe 33 is raised at a stroke, the valve opening operation of the discharge valve body 35 is instantaneously largely performed, a relatively wide space can be secured near the discharge valve device 30, and the diameter of the discharge port 12 can be made relatively large, which has an effect of improving the discharge capacity.

The effects described in the embodiments of the present invention are merely the best effects produced by the present invention, and the effects according to the present invention are not limited to the contents described in the embodiments.

Claims (1)

1. A toilet bowl flushing water tank device, a flushing water tank body with a water outlet at the center is loaded and stored with a water discharge valve device moving up and down relative to a water discharge valve body of the water outlet and a lever device linked with the water discharge valve device,

and a button linked with the lever device in the flushing water tank body is arranged on the tank cover body of the flushing water tank body,

the button should be disposed at a position offset to one side of the position of the drain opening,

the lever device consists of a connecting rod which is linked with the drain valve body and a bracket which pivotally supports the connecting rod on the way,

meanwhile, the bracket is pivoted on the way of the connecting rod at a position closer to the button side than the drain valve device,

and a support stay for connecting a lower portion of a housing of the drain valve device and a lower portion of the support of the lever device, one end of the support stay being an insertion structure detachably mounted to the lower portion of the housing, and the other end of the support stay being a support shaft vertically inserted into an insertion hole of the support, the support shaft being fixedly inserted into the insertion hole so as to be movable in a vertical direction by a predetermined length.