CN112832336A

CN112832336A - Toilet bowl and flap type drain valve thereof

Info

Publication number: CN112832336A
Application number: CN202110210155.8A
Authority: CN
Inventors: 林孝发; 林孝山; 张胜阳; 黄冠乔; 陈荣
Original assignee: Jomoo Kitchen and Bath Co Ltd
Current assignee: Jomoo Kitchen and Bath Co Ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-05-25

Abstract

A toilet bowl and flapper valve therefor, the flapper valve comprising: the base comprises a water outlet facing upwards, a support arranged on one side of the water outlet and a rotating shaft, one end of the rotating shaft is connected to the support, and the axis of the rotating shaft is horizontally arranged; the flap cover is arranged above the water outlet and can cover the water outlet; one end of the connecting rod is connected with the racket cover, the other end of the connecting rod is provided with a shaft hole sleeved on the rotating shaft, and the extending direction of the connecting rod is vertical to the axis of the rotating shaft; the opening piece is connected to one side of the racket cover, which is far away from the rotating shaft; the shaft hole is a strip-shaped hole, the extending direction of the shaft hole is perpendicular to the extending direction of the connecting rod, and a yielding gap is formed between the upper side wall of the shaft hole and the rotating shaft when the flap cover covers the water outlet. The flap type drain valve is simple in structure, high in reliability and labor-saving in opening.

Description

Toilet bowl and flap type drain valve thereof

Technical Field

The present invention relates to bathroom technology, and is especially toilet and its flap type draining valve.

Background

As shown in fig. 1, the flap type water discharge valve 1a is usually formed by hinging a flap 12a to a base 11a, and the flap 12a covers the water discharge opening of the base 11a to seal the water discharge opening. The flap cover 12a is provided with a chain 14 a. When drainage is required, the chain 14a is pulled upwards to enable the chain 14a to lift the flap cover 12a, so that the drainage opening is opened for drainage. However, the flap-type drain valve 1a requires a large pulling force to be applied to the chain 14a to open the drain opening.

In order to open the drain port with less effort, chinese patent application publication No. CN2111335421A proposes a flap type drain valve with less effort. When the water outlet needs to be opened, the flap cover is rotated around the first rotation fulcrum to initially open the water outlet, and then the flap cover is driven to rotate around the second rotation fulcrum to further open the water outlet. In order to realize the process, two groups of rotating mechanisms and one group of elastic resetting pieces are arranged in the flap type drain valve. The two groups of rotating mechanisms are used for realizing that the racket cover rotates around the first rotating fulcrum and the second rotating fulcrum in sequence. The elastic reset piece is used for providing reset elastic force to drive the racket cover to reset. Although the flap type drain valve can save labor to a certain degree, the flap type drain valve has the following three problems:

1. the rotating mechanism is more, and the structure is relatively complex, so that the manufacturing cost is high, and the reliability is poor;

2. the elastic reset piece is a spring, and is easy to rust after being soaked in water for a long time, so that the elastic reset piece is easy to lose efficacy;

3. when the flap cover is driven to rotate around the first rotating fulcrum, the water pressure and the gravity of the flap cover need to be overcome, the reset elastic force applied by the elastic reset piece needs to be overcome, and the pulling force required for lifting the flap cover is still large.

Disclosure of Invention

The application provides a clap lid formula drain valve, it includes:

the base comprises a water outlet facing upwards, a support arranged on one side of the water outlet and a rotating shaft, one end of the rotating shaft is connected to the support, and the axis of the rotating shaft is horizontally arranged;

the flap cover is arranged above the water outlet and can cover the water outlet;

one end of the connecting rod is connected with the racket cover, the other end of the connecting rod is provided with a shaft hole sleeved on the rotating shaft, and the extending direction of the connecting rod is vertical to the axis of the rotating shaft;

the opening piece is connected to one side of the racket cover, which is far away from the rotating shaft;

the shaft hole is a strip-shaped hole, the extending direction of the shaft hole is perpendicular to the extending direction of the connecting rod, and a yielding gap is formed between the upper side wall of the shaft hole and the rotating shaft when the flap cover covers the water outlet.

The flap type drain valve is simple in structure, high in reliability and labor-saving in opening.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.

Drawings

The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.

Fig. 1 is a schematic view of a flapper type water discharge valve in the related art;

FIG. 2 is a force-bearing model diagram of the flapper valve of FIG. 1;

fig. 3 is a schematic view of a flapper type drain valve in a closed state in the embodiment of the present application;

FIG. 4 is a schematic view of a flapper type water discharge valve in a state where the flapper is rotated about a first fulcrum in the embodiment of the present application;

fig. 5 is a schematic view of the flapper type water discharge valve in a state where the flapper is rotated about the second fulcrum Q2 in the embodiment of the present application;

FIG. 6 is a schematic view of a flapper in an embodiment of the present application;

fig. 7 is a schematic view of the flap-type drain valve in a closed state in the embodiment of the present application.

Detailed Description

As shown in fig. 3 to 5, fig. 3 to 5 show a flapper type water discharge valve 1 in the present embodiment. The flapper type drain valve 1 includes a base 11, a flapper 12, a link 13, and an opening piece 14. The flap cover 12 is rotatably connected to the base 11 through a connecting rod 13, the opening member 14 is connected to the flap cover 12, and the flap cover 12 can be driven to rotate relative to the base 11 by pulling the opening member 14.

The base 11 includes a drain cylinder 111, a support 112, a connecting portion 114, and a rotation shaft 113. The drain cylinder 111 may be vertically disposed. The drain cylinder 111 may be a cylinder. The opening at the top end of the drain cylinder 111 is a drain port 116. The drain 116 may be a circular opening. The end surface of the top end of the drain cylinder 111 is a water seal surface 115. The water sealing surface 115 is a ring-shaped plane, and may be a circular ring-shaped plane, for example. The water-blocking surface 115 surrounds the drain opening 116. The support 112 is provided at one side of the drain cylinder 111. The outer contour of the support 112 may be cylindrical. The axis of the support 112 is arranged vertically. One end of the rotation shaft 113 is connected to the outer circumferential wall of the holder 112. The axis of the rotary shaft 113 is horizontally disposed. Opposite ends of the connecting portion 114 connect the support 112 and the drain cylinder 111. The connection portion 114 may be a thin shell structure. The connection portion 114, the rotation shaft 113, the support 112, and the drain cylinder 111 may be an integrated structure.

As shown in fig. 6, the racket cover 12 includes a cover 120, a sealing gasket 124 and a connecting member 122. The cover 120 is a skeleton structure of the racket cover 12. The cover 120 has a large rigidity. The cover 120 includes a cover plate 123 and a cavity 121. The cover plate 123 is an annular flat plate, and the cover plate 123 is sleeved on the cavity 121. The outer wall of the chamber 121 is connected to the inner wall of the cover plate 123. The gasket 124 has elasticity. The gasket 124 may be a rubber gasket. The sealing gasket 124 has a ring shape, and may have a circular ring shape. The sealing gasket 124 is disposed on one side of the cover plate 123 close to the base 11 and is sleeved on the cavity 121. The gasket 124 and the cover plate 123 may be parallel to each other. The connecting member 122 is disposed above the cover plate 123 and connected to the cover plate 123. The inner diameter of the gasket 124 is less than or equal to the inner diameter of the water-sealing surface 115, and the outer diameter of the gasket 124 is greater than or equal to the outer diameter of the water-sealing surface 115. When the flap 12 is placed on the drain opening 116, the gasket 124 is coaxial with the drain opening 116, and the surface of the gasket 124 facing away from the cover plate 123 abuts against the water sealing surface 115 around the drain opening 116 to seal the drain opening 116.

The opening member 14 may be a chain or a rope. One end of the opening member 14 is connected to the connecting member 122, that is, the opening member 14 is connected to the side of the flap cover 12 facing away from the rotating shaft 113.

The connecting rod 13 may be configured as a straight strip. The link 13 extends in a direction perpendicular to the axis of the rotating shaft 113. The plate surface of the link 13 is also perpendicular to the axis of the shaft 113. One end of the connecting rod 13 is connected to the cover plate 123 of the racket cover 12, and the connecting rod 13 may be connected to a side of the cover plate 123 facing away from the sealing pad 124. The link 13 and the connecting member 122 are connected to opposite sides of the cover plate 123, respectively. The other end of the link 13 extends to the rotation shaft 113 in a direction parallel to the cover plate 123, and is provided with a shaft hole 131. The shaft hole 131 penetrates the link 13 in a direction parallel to the rotation shaft 113. In the present embodiment, the direction in which the shaft hole 131 penetrates the link 13 is perpendicular to the plate surface of the link 13. The shaft hole 131 is a strip-shaped hole, and may be a straight strip-shaped hole. The extending direction of the shaft hole 131 is perpendicular to the extending direction of the link 13. The width of the shaft hole 131 is slightly larger than the diameter of the rotation shaft 113. The shaft hole 131 is sleeved on the rotating shaft 113. When the flap 12 covers the drain opening 116, the shaft hole 131 extends in a substantially vertical direction, in which case, the uppermost portion of the side wall of the shaft hole 131 is an upper side wall 132 of the shaft hole 131, the rotating shaft 113 may be located in an end of the shaft hole 131 below, and a relief gap 133 is formed between the upper side wall 132 and the rotating shaft 113.

When the flap type drain valve 1 needs to be opened, only the opening piece 14 needs to be lifted, the opening piece 14 drives one side of the flap 12 away from the rotating shaft 113 to move upwards, as shown in fig. 3, the edge of the water sealing surface 115 close to the rotating shaft 113 forms a first fulcrum Q1, the flap 12 rotates around the first fulcrum Q1, the connecting rod 13 presses downwards to enable the upper side wall 132 of the shaft hole 131 to be close to the rotating shaft 113, the abdicating gap 133 between the upper side wall 132 and the rotating shaft 113 is reduced, a gap is opened between the water sealing surfaces 115 of the sealing gasket 124 of the flap 12 before the upper side wall 132 abuts against the rotating shaft 113, and water can flow into the drain port 116 from the gap. After the water flows into the gap, the water applies a water pressure from below the flap cover 12, which can counteract most of the water pressure applied above the flap cover 12, and thus the pulling force applied to the opening member 14 needs to be maximized before the gap is formed between the flap cover 12 and the sealing gasket 124. As shown in fig. 4, after the link 13 rotates around the first fulcrum Q1 until the upper sidewall 132 of the shaft hole 131 abuts against the rotation shaft 113 following the flap 12, the flap 12 and the link 13 rotate around the rotation shaft 113 as the second fulcrum Q2 until the flap 12 completely opens the water outlet 116.

After the flap cover 12 completely opens the drainage opening 116, the flap cover 12 can be accurately covered on the drainage opening 116 again under the action of gravity, and the flap cover returns to the original state.

In the present embodiment, as shown in fig. 7, when the flap 12 is closed over the drain opening 116, the pulling force required to initially open the drain opening 116 by rotating the flap 12 around the first fulcrum Q1 is:

wherein F2 is the upward pulling force applied by the opening member 14 to the flap cover 12;

g is a downward resultant force applied to the racket cover 12, and the resultant force is composed of the gravity of the racket cover 12 and the water pressure applied to the racket cover 12;

l3 is the arm length of the flap 12 under upward tension;

l4 is the length of the arm of the downward resultant force applied to the flap 12.

As shown in fig. 1 and 2, fig. 1 shows an unmodified flapper type water discharge valve 1 a. The flapper 12a of this unmodified flapper type water discharge valve 1a can rotate only about the second fulcrum Q2 by the pulling of the chain 14 a. When the flap 12a is closed over the drain opening, the pulling force required to open the drain opening by rotating only around the second fulcrum Q2 is:

wherein, F1 is the upward pulling force applied by the chain 14a to the flap cover 12 a;

g is the downward resultant force applied to the racket cover 12a, and the resultant force is composed of the self gravity of the racket cover 12a and the water pressure applied to the racket cover 12 a;

l1 is the arm length of the flap cover 12a under upward tension;

l2 is the length of the arm of the downward resultant force applied to the flap 12 a.

The difference between the pulling force required by the flap valve 1a to open the flap 12a and the pulling force required by the flap valve 1 to open the flap 12 in this embodiment is:

as can be seen from a further comparison of figures 1 and 7,

L1＝L3+X

L2＝L4+X

wherein X is the distance between the first pivot point Q1 and the second pivot point Q2;

it is possible to obtain,

further, since L3 > L4, F1-F2 > 0 was found.

Therefore, the flap cover type drain valve 1 in the embodiment requires less pulling force to open the flap cover 12, and thus is more labor-saving. Meanwhile, the flap type drain valve 1 in the embodiment is simple and reliable in structure, the flap 12 does not need to be reset by an additional elastic reset piece when being covered again, the reset elastic force applied by the elastic reset piece does not need to be overcome when the flap is opened, and the flap type drain valve is simple in structure, high in reliability and labor-saving.

In an exemplary embodiment, during the process of opening the water outlet 116 by rotating the flap 12 around the first pivot point Q1, the sealing pad 124 is deformed under the action of the water pressure to keep the sealing surface 115 attached. When the gasket 124 reaches the maximum deformation amount R, the distance between the rotating shaft 113 and the upper sidewall 132 of the shaft hole 131 is greater than zero, i.e. the width S of the relief gap 133 is still greater than zero, so that the flap cover 12 continues to rotate around the first fulcrum Q1 after the gasket reaches the maximum deformation amount.

When the gasket 124 has the maximum deformation amount R, the gasket 124 reaches the limit of being separated from the water sealing surface 115, and the flap 12 continues to rotate the gasket 124 in the same direction around the first fulcrum Q1 by any angle so that the water outlet 116 is initially opened.

In an exemplary embodiment, the water sealing surface 115 is a slope, and the height of the water sealing surface 115 on the side close to the rotating shaft 113 is greater than the height of the water sealing surface 115 on the side away from the rotating shaft 113. The height of the rotating shaft 113 is greater than the maximum height of the water seal surface 115.

This arrangement is advantageous in that the first fulcrum Q1 is formed on the side of the water sealing surface 115 close to the rotating shaft 113 at each opening, so that the distance X between the first fulcrum Q1 and the second fulcrum Q2 is short, and thus, the swing of the shaft hole 131 when rotating around the first fulcrum Q1 is small, and the length of the shaft hole 131 can be set short accordingly.

In an exemplary embodiment, when the flap cover 12 is placed over the drain opening 116, the extension direction of the shaft hole 131 forms an acute angle with the vertical direction, and the upper sidewall 132 of the shaft hole 131 is inclined toward the side close to the flap cover 12.

When the flap 12 rotates about the first fulcrum Q1, the shaft hole 131 also rotates about the first fulcrum Q1, and the rotating shaft 113 is stationary, and when the upper side wall 132 of the shaft hole 131 is inclined toward the side close to the flap 12, the inner wall of the shaft hole 131 hardly interferes with the rotating shaft 113.

In an exemplary embodiment, two shafts 113 are provided. Two rotating shafts 113 are respectively arranged at two opposite sides of the support. The two rotating shafts 113 are coaxially disposed. Two connecting rods 13 are provided. The two links 13 are parallel to each other. The two links 13 are spaced apart from each other, the distance between the two links 13 being slightly greater than the diameter of the pillar. The strut is located between the two links 13. The shaft holes 131 of the two connecting rods 13 are respectively sleeved on the two rotating shafts 113. The ends of the two connecting rods 13, which are not provided with the rotating shaft 113, are connected to the cover plate 123.

The flap cover 12 is rotatably connected to the support through two connecting rods 13, and the rotary connection between the flap cover 12 and the support is more stable.

In an exemplary embodiment, as shown in fig. 6, the side of the shaft hole 131 opposite to the upper sidewall 132 is the lower side of the shaft hole 131. An opening 134 is provided at the lower side of the shaft hole 131. The opening 134 extends from the shaft hole 131 to the outside of the connecting rod 13. The width of the opening 134 is slightly smaller than the diameter of the rotation shaft 113.

When the link 13 is mounted to the rotation shaft 113, the rotation shaft 113 may be fed into the shaft hole 131 through the opening 134. In the process that the rotating shaft 113 passes through the opening 134, two side walls of the opening 134 are elastically deformed by the extrusion of the rotating shaft 113, so that the opening 134 is expanded to a width that the rotating shaft 113 can pass through, and the opening 134 is restored to a width smaller than the diameter of the rotating shaft 113 after the rotating shaft 113 enters the shaft hole 131. Thus, it is more convenient to mount the link 13 to the rotation shaft 113.

The embodiment also provides a water closet. The toilet bowl comprises a water tank and the flap-type drain valve 1. The bottom of the water tank is provided with a drain hole. The flap type drain valve is arranged on the drain hole. The opener 14 of the flap-type drain valve 1 lifted up can open the drain port so that the water in the water tank is drained downward from the drain port 116 of the flap-type drain valve.

The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.

The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.

Claims

1. A flapper type drain valve, comprising:

2. The flapper valve according to claim 1 wherein said base is provided with an annular water sealing surface surrounding said outlet;

the racket cover comprises a cover body and a sealing gasket arranged on the cover body, and the sealing gasket can cover the water sealing surface;

when the gasket reaches the maximum deformation amount in the opening process of the flap valve, the width of the abdicating gap is still larger than zero.

3. The flapper type drain valve according to claim 2, wherein the water seal surface is a slope having a height greater on a side thereof close to the rotation shaft than on a side thereof away from the rotation shaft.

4. The flapper type drain valve of claim 2, wherein the gasket is ring-shaped, and an outer diameter of the water-sealing surface is less than or equal to an outer diameter of the gasket.

5. The flapper type water discharge valve according to claim 3, wherein an upper side wall of the shaft hole is inclined to a side close to the flapper when the flapper covers the water discharge port.

6. The flapper type drain valve according to claim 1, wherein there are two of the rotating shafts, the two rotating shafts are respectively arranged at two opposite sides of the support, and the two rotating shafts are coaxially arranged;

the connecting rods are arranged in two parallel, and the shaft holes of the two connecting rods are respectively sleeved on the two rotating shafts.

7. The flapper type drain valve according to claim 6, wherein an opening is provided at a lower side of the shaft hole, and a width of the opening is smaller than a diameter of the rotation shaft.

8. The flapper valve according to claim 1 wherein said base further includes a vertically disposed drain barrel;

the water outlet is arranged at the top end of the water discharge barrel.

9. The flapper type drain valve of claim 2, wherein the flapper further comprises a cap body and a coupling member coupled to the opening member;

the cover body comprises a cavity and a cover plate sleeved on the cavity;

the connecting piece and the connecting rod are respectively arranged on two opposite sides of the cover plate, and the sealing gasket is arranged on one side, close to the base, of the cover plate.

10. A toilet bowl comprising a flapper valve as claimed in any one of claims 1 to 9.