Drain cover

Abstract

To provide a drain port cover capable of improving design and preventing breakage of the drain port cover by covering the drain port.SOLUTION: A drain port cover 4 comprises: a cover part 5 that covers the drain port 1 of a tank body B, and a support shaft 6 with the cover part 5 attached to an upper end, wherein a water passage space S is formed between the cover part 5 and the drain port 1. A cushioning mechanism absorbs impact by lowering the cover part 5 when the impact is applied to the cover part 5. The water passage space S is not blocked even when the buffer mechanism operates and the cover part 5 is lowered, and hot water in the tank body B can be drained at all times.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a drain cover used for a drain formed in a tank body. [Background technology]

[0002] A drain outlet is formed on the bottom of a basin such as a washbowl or hand-washing bowl. A drain pipe consisting of a drain trap and the like is connected to the downstream side of the drain outlet, and hot and cold water is drained from the basin.

[0003] The tank body becomes dirty with use due to water stains and slime. Dirt tends to accumulate particularly around the periphery of the drain outlet and inside the drain outlet, and when the dirt is visible, it causes discomfort to the user. Therefore, as described in the patent documents, a structure is known in which a drain cover is attached to the drain to cover up dirt and improve the design of the tank body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2008-255598 A Summary of the Invention [Problem to be solved by the invention]

[0005] When a user places a bucket, washbowl, or the like inside the tub body, the drain cover is subjected to an impact and may be damaged.

[0006] The present invention has been made in consideration of the above problems, and has an object to improve the design by covering and concealing the drain, and to prevent damage to the drain cover. [Means for solving the problem]

[0007] The first invention includes a cover for covering a drain outlet of a tank body, a support shaft having the lid portion attached to an upper end thereof, A drain cover that forms a water passage space between the lid portion and the drain, The lid portion is capable of descending when an impact is applied thereto, This drain cover is characterized in that the water flow space is not blocked even when the lid is lowered, allowing hot and cold water to be drained from within the tub body.

[0008] With this drain cover, the design can be improved by covering the drain with the lid, and the lid can prevent damage by descending when an impact is applied. Furthermore, since the water passage space is not blocked even when the lid is in the lowered position, hot water can be prevented from overflowing from the tub body.

[0009] In a second aspect of the present invention, the drain cover is provided with a spring, The cover is lowered by the elasticity of a spring. First invention 2 is a drain cover according to the first embodiment.

[0010] This drain cover uses the elasticity of the spring to lower the lid, cushioning the impact and allowing the cover to return to its original position. This not only ensures that damage is prevented, but also allows the drain cover to be used even after damage is prevented, improving the design of the tank.

[0011] The third invention is a cover part, The device is characterized in that it can be lowered to a level substantially flush with the bottom surface of the tank body or below the bottom surface. First invention or second invention 2 is a drain cover according to the first embodiment.

[0012] With this drain cover, the lid portion is substantially flush with the bottom surface of the tank body or lowers below the bottom surface, so that impacts can be received by the bottom surface of the tank body.

[0013] In a fourth aspect of the present invention, the lid portion is The drainage system has a shock absorbing portion that comes into contact with the periphery of the drain outlet when the drainage system is lowered, and absorbs shock to the tank body and the lid. First to third inventions 1. A drain cover according to any one of claims 1 to 9.

[0014] This drain cover makes it possible to prevent damage to the tank body by the shock absorbing part. Note that "cushioning the impact on the tank body" also includes absorbing the impact on the components attached to the tank body, such as the drain plug body. Effect of the Invention

[0015] According to the present invention, it is possible to improve the design of the tank body, and to prevent damage to the drain cover even if an impact is applied to it. In addition, even if water is discharged from the faucet with the lid part lowered, it is possible to prevent hot and cold water from overflowing from the tank body. [Brief description of the drawings]

[0016] [Figure 1] FIG. 4 is a cross-sectional view showing the drain outlet cover attached to the tank body. [Diagram 2] FIG. 4 is a cross-sectional view showing the configuration of the drain outlet cover. [Diagram 3] FIG. 4 is a cross-sectional view showing a state in which the buffer mechanism is activated. [Figure 4] A cross-sectional view showing a state in which a drain outlet cover according to a second embodiment is attached to a tank body. [Diagram 5] FIG. 4 is a cross-sectional view showing a state in which the buffer mechanism is activated. [Figure 6] FIG. 11 is a cross-sectional view showing the configuration of a drain outlet cover according to a third embodiment. [Figure 7] 7 is a cross-sectional view taken along the line AA' of FIG. [Figure 8] FIG. 4 is a cross-sectional view showing a state in which the buffer mechanism is activated. [Figure 9] FIG. 13 is a cross-sectional view showing the configuration of a drain port cover according to a fourth embodiment. [Figure 10] 10 is a cross-sectional view taken along the line AA' of FIG. [Figure 11] FIG. 4 is a cross-sectional view showing a state in which the buffer mechanism is activated. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The present invention will be described below with reference to the drawings. Note that the invention described below is intended to facilitate understanding of the embodiments, and is not to be construed as being limited thereto.

[0018] The drain outlet cover according to this embodiment is attached to a drain outlet 1 formed in a tank body B, as shown in Figs.

[0019] The tank body B is a washbowl that is open at the top, and has an opening formed on the bottom surface, with the drain plug body 2 attached to an inward flange formed at the bottom end of the opening. In addition, a water faucet (not shown) is attached to the edge of the tank body B.

[0020] The drain plug body 2 is a hollow cylindrical member having a flange portion 21 at the upper end, and inside it is formed a drain port 1 for discharging hot and cold water etc. from the tank body B, and a male screw is threaded on the outer periphery. The drain plug body 2 is inserted from above into an opening formed in the bottom surface of the tank body B, and is screwed into the drain pipe 3 on the back side of the tank body B. The step 22 is a stepped portion formed on the inner surface of the drain plug body 2 so as to protrude inward, and the drain port cover 4, which will be described later, is placed on it.

[0021] The drain pipe 3 is a pipe that discharges the wastewater that flows in from the drain outlet 1 to the downstream side, and has a female thread formed at the upper end, which is screwed into the drain plug body 2 via a packing to clamp the flange of the opening formed in the bottom surface of the tank body B. The drain pipe 3 also has a drain trap (not shown) that forms a water seal in the flow path, preventing odors and pests from entering the house from the downstream side.

[0022] As shown in Fig. 2, the drain cover 4 is composed of a lid portion 5, a support shaft 6, a cylindrical portion 7, a collection portion 8, and a spring 9. The drain cover 4 covers the periphery of the drain 1 with the lid portion 5, improving the design of the tank body B, and drains hot and cold water from the tank body B through the water passage space S formed between the lid portion 5 and the drain 1. In addition, the drain cover 4 is provided with a shock absorbing mechanism that, when an impact is applied to the lid portion 5, causes the lid portion 5 to descend to absorb the impact.

[0023] The lid 5 is disk-shaped with an outer diameter substantially the same as that of the flange 21, and the support shaft 6 is detachably fitted to the underside. The elasticity of the spring 9 allows the lid 5 to descend when an impact is applied in the axial direction of the support shaft 6. The outer diameter of the lid portion 5 is smaller than the inner diameter of the opening formed in the bottom surface of the tank body B.

[0024] The support shaft 6 is rod-shaped and supports the lid part 5, with the lid part 5 attached to its upper end and the lower end housed within the cylindrical part 7. The protrusion 61 protrudes outward from the middle of the support shaft 6, with its upper surface abutting against the cylindrical part 7 and its lower surface abutting against the spring 9.

[0025] The cylindrical portion 7 is a hollow cylinder that houses the support shaft 6 and the spring 9 therein, and has an inner flange portion 71 formed at the upper end and a hole 72 that engages with a cap 73 formed at the lower end. The inner flange portion 71 protrudes inward from the upper end of the cylindrical portion 7 , and its inner diameter is approximately the same as the outer diameter of the support shaft 6 . The hole 72 is an opening penetrating the inside and outside of the cylindrical portion 7, and a claw portion 74 of a cap 73 is engaged with the hole 72. The cap 73 is attached to the lower end of the cylindrical portion 7 and is a member for closing the lower end of the cylindrical portion 7 . The cap 73 is attached by engaging the claws 74 with the holes 72 .

[0026] The collection section 8 is formed at the upper and lower ends of the tubular section 7, and is composed of a circular annular section 81 having approximately the same outer diameter as the inner surface of the drain plug body 2, and mesh-like ribs 82 that collect hair and the like that gets mixed in with the wastewater discharged from the tank body B. In addition, the annular section 81 formed on the upper end side of the tubular section 7 rests on the step section 22 of the drain plug body 2.

[0027] The spring 9 is a metal wire wound in a spiral shape, and is an elastic member that contracts when it receives an impact in the axial direction. The spring 9 is disposed inside the cylindrical portion 7, between the support shaft 6 and the cylindrical portion 7, and is sandwiched between the protrusion 61 of the support shaft 6 and the cap 73 in the vertical direction.

[0028] The assembly of the drain cover 4 will be described below.

[0029] First, the support shaft 6 is inserted from below into the cylindrical portion 7. At this time, the upper end of the support shaft 6 penetrates the inner flange portion 71 and protrudes upward from the cylindrical portion 7. On the other hand, the outer diameter of the protrusion 61 is larger than the inner diameter of the inner flange portion 71, so that the support shaft 6 will not come off. Next, the spring 9 is placed inside the cylindrical portion 7 . Next, the cap 73 is attached from below the cylindrical portion 7. At this time, the claws 74 engage with the holes 72, closing the lower end of the cylindrical portion 7, and the spring 9 is sandwiched between the lower surface of the protrusion 61 of the support shaft 6 and the upper surface of the cap 73. Finally, the lid portion 5 and the support shaft 6 are fitted together to complete the assembly of the drain cover 4.

[0030] The drain cover 4 assembled as described above is provided with a shock absorbing mechanism that absorbs shocks applied to the members and prevents damage. The operation of the shock absorbing mechanism will be described below.

[0031] First, as shown in Fig. 1, when the drain cover 4 is attached to the tank body B, the collection part 8 is placed on the step part 22. At this time, the spring 9 of the drain cover 4 is in an extended state, and the lid part 5 is located at a position separated from the drain 1, and the design of the tank body B is improved by covering and concealing the periphery of the drain 1 and the inside of the drain 1 so that they cannot be seen by the user. In this state, if a bucket or washbasin (not shown) is placed in the tank body B and a strong downward impact is applied to the lid 5, the buffer mechanism is activated. That is, as shown in Figure 3, the impact causes the lid 5 and the support shaft 6 to descend, and the spring 9 contracts to buffer the impact and prevent the drain cover 4 from being damaged.

[0032] When the bucket or washbowl is removed, the restoring force of the spring 9 causes the lid 5 to rise again and return to the position shown in FIG.

[0033] Here, the drain outlet cover 4 does not block the water passage space S even when the cushioning mechanism is activated and the lid 5 is lowered. Therefore, even if a bucket or the like is placed on the lid 5 and water is discharged from the faucet while the cushioning mechanism is activated, the discharged hot water passes between the lid 5 and the opening formed in the bottom surface of the tank body B, and is discharged from the water passage space S to the drain outlet 1. This makes it possible to prevent hot water from overflowing from the tank body B.

[0034] The above describes the first embodiment of the present invention. According to the present invention, the drain cover 4 is equipped with a cushioning mechanism, which makes it possible to prevent damage to the components even if a strong impact is applied to the drain cover 4, particularly the lid portion 5. In the first embodiment, the lid 5 can be lowered below the bottom surface of the tank body B. Therefore, when the lid 5 is lowered by the buffer mechanism to be substantially flush with the bottom surface of the tank body B or to be lower than the bottom surface of the tank body B, the impact applied to the drain outlet cover 4 is received by the tank body B, and damage to the drain outlet cover 4 can be reliably prevented. In addition, in the present invention, the water passage space S is not blocked even when the lid portion 5 is lowered. This makes it possible to drain hot and cold water from the tank body B even when a bucket or the like is placed on the top of the drain cover 4. Furthermore, as mentioned above, the lid portion 5 has a smaller diameter than the opening formed on the bottom surface of the tank body B. Therefore, even if the lid portion 5 is approximately flush with the bottom surface of the tank body B or lowered below the bottom surface of the tank body B, hot water can be drained from the water passage space S through the lid portion 5 and the above-mentioned opening. 3, the lid 5 is positioned away from the top surface of the drain plug body 2 even when the buffer mechanism is activated, but the lid 5 lowered by the buffer mechanism may come into contact with the drain plug body 2. Even in this case, because no water-stopping member such as a packing is attached to the lid 5, the water passage space S is not blocked even when the lid 5 is lowered, and hot and cold water in the tub body B can be drained.

[0035] [Second embodiment] 4 and 5, when the lid 5 descends, the support shaft 6 comes into contact with the bottom of the cylindrical portion 7, preventing it from descending any further. Here, the height H1 to which the lid 5 can descend when the buffer mechanism is activated is smaller than the height H2 of the water passage space, so that even when the lid 5 descends to its limit, the water passage space S is not blocked and hot and cold water can be drained from within the tub body B. In this embodiment, the lower end of the support shaft 6 is guided by the cap 73. This makes it possible to prevent the support shaft 6 from tilting even if an impact is applied to the lid portion 5.

[0036] [Third embodiment] In this embodiment shown in FIGS. 6 to 8, a plurality of protrusions 51 are formed on the lower surface of the lid portion 5. As shown in FIG. When the buffer mechanism is activated and the lid 5 is lowered, the protrusion 51 comes into contact with the upper surface of the drain plug body 2. At this time, the water passage space S is maintained between the protrusions 51, allowing hot and cold water to be drained from the tank body B. That is, in this embodiment, the water passage space S is prevented from being blocked by the protrusions 51, and hot and cold water can be drained from within the tank body B even when the buffer mechanism is activated.

[0037] [Fourth embodiment] 9 to 11, a plurality of buffer parts 52 are formed on the lower surface of the lid part 5. In this embodiment, the lid part 5 does not descend below the bottom surface of the tank body B. The buffer portion 52 is made of a soft material such as rubber or silicone, and when the buffer mechanism is activated and the lid portion 5 descends, it comes into contact with the periphery of the drain outlet 1. At this time, the buffer portion 52 deforms to buffer the impact on the tank body B and the lid portion 5, making it possible to prevent damage to the tank body B and the drain plug body 2. Furthermore, by maintaining the water passage space S between the buffer portions 52, hot water can be drained from the tank body B. That is, in this embodiment, the buffer portion 52 prevents the water passage space S from being blocked, and hot water can be drained from the tank body B even when the buffer mechanism is activated.

[0038] All the embodiments of the present invention are described above, but the present invention is not limited to the shapes of the above-mentioned embodiments, and various modifications may be made. For example, in the first embodiment, the lid part 5 can be lowered below the bottom surface of the tank body B, but it may be lowered to a position where it is approximately flush with the bottom surface of the tank body B. Even in this case, the tank body B receives the impact applied to the drain cover 4, thereby preventing damage to the drain cover 4. In the third embodiment, the protrusion 51 ensures the water passage space S when the buffer mechanism is in operation. However, instead of the protrusion 51, a plurality of recessed grooves may be formed in the lower surface of the lid 5. In addition, although the tank body in each embodiment is a washbowl, it may be a hand-washing bowl installed in a toilet, a kitchen sink, or a bathtub in a bathroom. [Explanation of symbols]

[0039] B Tank body 1 Drain 2 Drain plug body 21 Flange 22 Step section 3 Drainage piping 4 Drain cover 5 Lid 51 Protrusion 52 Buffer section 6 Support shaft 61 Protrusion 7 Cylindrical part 71 Inner flange 72 holes 73 Cap 74 Claw part 8. Collection section 81 Circular section 82 Ribs 9. Spring S water flow space

Claims

1. A lid portion for covering a drain outlet of the tank body; A support shaft having the lid portion attached to an upper end thereof; a spring that is in contact with the support shaft and is contractible in an axial direction of the support shaft, A drain cover that forms a water passage space between the lid portion and the drain, The cover does not have a waterproofing member attached thereto, The lid portion can be lowered by the contraction of the spring when an impact is applied, This drain cover is characterized in that the water flow space is not blocked even when the lowered lid portion abuts against the periphery of the drain, allowing hot and cold water to be drained from within the tank body.

2. A lid portion for covering a drain outlet of the tank body; A support shaft having the lid portion attached to an upper end thereof; a spring that is in contact with the support shaft and is contractible in an axial direction of the support shaft, A drain cover that forms a water passage space between the lid portion and the drain, The lid portion can be lowered by the contraction of the spring when an impact is applied, The height to which the lid portion can be lowered is smaller than the height of the water passage space, This drain cover is characterized in that the water flow space is not blocked even when the lid is lowered to its limit, allowing hot and cold water to be drained from within the tank body.

3. The lid portion is disposed inside an opening formed on the bottom surface of the tank body, The top of the lid portion upper surface is 3. The drain cover according to claim 1, which is capable of being lowered to a position substantially flush with the opening or lower than the opening.

4. The lid portion is 4. The drain cover according to claim 1, further comprising a cushioning portion that contacts the periphery of the drain when the drain cover is lowered, cushioning impact to the tank body and the lid portion.

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