JP2021188345A - Piping structure - Google Patents

Abstract

To provide a drain plug device that opens and closes a drain port of a tank body with improved cleanability.SOLUTION: A tank body 10 has a first wall surface 16 on which a drain port 17 is formed, and a second wall surface 18 formed in a displacement direction of a valve body 6. Further, a storage part 19 is recessed in the second wall surface 18, and the valve body 6 separated from the first wall surface 16 is arranged in the storage part 19 when the drain port 17 is opened. At this time, since there is no gap or step that hinders cleaning, between the valve body 6 and the tank body 10, the cleaning can be easily performed by being substantially flush with the second wall surface 18 of an outer edge of the valve body 6.SELECTED DRAWING: Figure 6

Description

The present invention relates to a drain plug device that opens and closes a drain port of a tank body.

As a drain plug device that opens and closes the drain port of the tank body, a structure equipped with a valve body that opens and closes the drain port, an operation unit attached to the tank body, and a lock mechanism that holds the open state of the drain port is known. Has been done.
Upon receiving an instruction from the operation unit, the drain plug device raises and lowers the valve body via the connected transmission member, and maintains the state of the valve body by the lock mechanism to open and close the drain port. It will be possible.

Here, the applicant proposes a drain plug device in which a protruding portion is formed on the side surface of the tank body, as shown in FIG.
The protruding portion has a first wall surface on which a drainage port is formed and a second wall surface formed above the first wall surface, and the valve body is pulled up from the second wall surface side to open the drainage port. Since the drain plug device does not require a device for raising and lowering the valve body below the drain port, the drain plug device should be installed even if the space between the drain port and the waterproof pan is narrow. Is possible.

Japanese Patent Application No. 2020-032950

In the drain plug device, when the valve body rises, a large step or gap is generated between the valve body and the second wall surface. Here, when cleaning the drain plug device without removing the valve body, the user puts his / her hand in the protruding portion to perform cleaning, but the above-mentioned steps and gaps hinder cleaning, which makes cleaning complicated.
In view of the above problems, the present invention has an object of improving the cleanability of the drain plug device.

The present invention according to claim 1 for solving the above problems includes a tank body in which a drainage port is formed and a tank body.
Equipped with a valve body that is displaced by the operation unit and opens and closes the drainage port.
The tank body has a first wall surface on which a drainage port is formed and a second wall surface formed in the displacement direction of the valve body.
It is a drain plug device characterized in that the outer edge portion of the valve body is substantially flush with the second wall surface when the drain port is opened.

The first wall surface and the second wall surface do not necessarily have to be formed on the tank body itself, and the first wall surface and the second wall surface may be formed by attaching another member to the tank body.

According to the second aspect of the present invention, the second wall surface is
The drain plug device according to claim 1, wherein the drain plug device is formed above the first wall surface.

According to the third aspect of the present invention, the valve body is
The drain plug device according to claim 1 or 2, wherein the drain port is opened by being pulled up to the second wall surface by operating the operation unit.

In the present invention according to claim 4, the second wall surface is
The drain plug device according to any one of claims 1 to 3, further comprising a storage portion in which a valve body is housed when the drain port is opened.

According to the present invention, the outer edge of the valve body is substantially flush with the second wall surface when the drainage port is opened, so that it is possible to prevent a step or gap that hinders cleaning. Will be.

It is a top view which shows the 1st Embodiment. It is sectional drawing which shows the pop-out part. It is sectional drawing which shows the closed state of a drainage port. It is a perspective view which shows a valve body and a valve shaft. It is sectional drawing which shows the opening state of a drainage port. (A) is a cross-sectional view taken along the line A of FIG. 3, and FIG. 6 (b) is a cross-sectional view showing a state in which the drainage port is opened from FIG. 6 (a). It is sectional drawing which shows the closed state of the drainage port in the drainage plug device which concerns on 2nd Embodiment. It is sectional drawing which shows the opening state of a drainage port. It is sectional drawing which shows the 3rd Embodiment. It is sectional drawing which shows the prior art.

Hereinafter, the drain plug device 1 of the present invention will be described with reference to the drawings. It should be noted that the description described below is for facilitating the understanding of the embodiments, and the invention is not limited and understood by this.

As shown in FIGS. 1 to 6, the drain plug device 1 is composed of a tank body 10, an operation unit 20, a lock mechanism 3, a transmission member 4, an elevating unit 5, and a valve body 6.

The tank body 10 is a bathtub arranged in the bathroom, and is arranged adjacent to the washing place. Further, the drainage port 17 formed on the bottom surface of the tank body 10 can be remotely opened and closed by the operation unit 20 attached to the edge portion. The tank body 10 is composed of a bottom wall portion 11 forming a rectangular shape in a plan view and a side wall portion 12 erected upward from the four corners of the bottom wall portion 11, and the side wall portion of the side wall portion 12 adjacent to the washing place. At the lower end of 12, the corner portion 13 intersecting the bottom wall portion 11 has a protruding portion 15.
The protruding portion 15 is the center of the side wall portion 12 in a plan view, and is formed so as to project in a substantially U-shape in a cross-sectional view toward the outside of the side wall portion 12, that is, toward the washing place side. Further, the protruding portion 15 is configured with a first wall surface 16 on which the drainage port 17 is formed and a second wall surface 18 formed at a position facing the first wall surface 16 in the displacement direction of the valve body 6. ing.
As shown in FIGS. 2 and 3, the first wall surface 16 is the lower surface of the protruding portion 15, is continuous with the bottom wall portion 11 without a step, and has a drainage port 17. Further, the second wall surface 18 is the upper surface of the protruding portion 15, and the storage portion 19 is formed.
The drainage port 17 is a circular opening that penetrates the lower surface of the protruding portion 15 in the vertical direction, and is formed at the lowest position among the bottom wall portion 11 of the tank body 10 and the lower surface of the protruding portion 15. The drainage port 17 is arranged on the washing place side of the inner side surface of the side wall portion 12, that is, on the outside of the tank body 10, and is invisible to the user in a plan view. Further, no member is attached below the drain port 17, and there is no protruding portion below the tank body 10.
The storage portion 19 is formed by recessing the second wall surface 18 toward the washing place side at the position where the side wall portion 12 and the second wall surface 18 intersect, and the side surface and the lower surface on the side wall portion 12 side are opened. There is. Further, the storage portion 19 is formed directly above the drain port 17, and the valve shaft 54 penetrates in the center.

The operation unit 20 has a switch unit 21 exposed in the bathroom from the edge of the tank body 10, and when a push operation is applied to the switch unit 21, the drain plug device 1 is operated to operate the valve body 6. The drain port 17 is opened and closed by raising and lowering it.
In the lock mechanism 3, a rod-shaped lock shaft extending from the upper end is connected to the back surface of the switch portion 21, and a transmission member 4 is connected to the lower end. Further, the lock mechanism 3 has a gear arranged inside, and the meshing of the internal gear and the disengagement of the gear are repeated in accordance with the pushing operation with respect to the switch portion 21, so that the drain port 17 is opened each time the operation is performed. It is possible to switch between holding and releasing holding. Further, the lock mechanism 3 has a return spring arranged inside, and urges the inner wire, which will be described later, to the switch portion 21 side.
The transmission member 4 is a release wire composed of an outer tube made of resin and an inner wire made of metal, and the inner wire can slide in the outer tube in conjunction with the switch portion 21. Further, the transmission member 4 has a tubular portion composed of an inner cylinder 41 and an outer cylinder 42 at an end portion, and the inner cylinder 41 can protrude from the outer cylinder 42 according to the advance / retreat of the inner wire.

The elevating unit 5 includes a first gear 51, a second gear 52, a third gear 53, and a valve shaft 54 that are movable according to an instruction from the operation unit 20.
The first gear 51 is a circular spur gear, and the second gear 52 and the third gear 53 are rod-shaped racks that mesh with the first gear 51, respectively. The second gear 52 is arranged on the operation unit 20 side of the first gear 51, the third gear 53 is arranged on the valve body 6 side of the first gear 51, and the stress transmitted to the second gear 52 is the first gear 51. The direction is reversed and transmitted to the third gear 53. The second gear 52 is arranged at a position where the upper end abuts on the end of the inner cylinder 41, but is not engaged or the like and is disconnected. On the other hand, the third gear 53 is fitted with the valve shaft 54 at the lower end and is interlocked with the movement of the third gear 53.
The valve shaft 54 is a rod-shaped body that penetrates the upper surface of the protruding portion 15, and as shown in FIG. 4, a groove portion 55 that engages with the valve body 6 is formed at the end portion over the entire circumference. The end of the valve shaft 54 is connected to the valve body 6 in the completed construction state, and the valve body 6 is urged by a spring 56 in a direction of pressing the valve body 6 against the drain port 17.
Therefore, the third gear 53 engaged with the valve shaft 54 is urged by the spring 56 so as to be displaced toward the drain port 17, and the second gear 52 is attached to the operation unit 20. It is urged to displace in the direction of proximity.

The valve body 6 is a plate-shaped lid that opens and closes the drain port 17, and is displaced up and down in response to an operation from the operation unit 20. Further, the valve body 6 has a substantially U-shaped upper surface in a plan view in which a straight portion is formed at one end, and a circular lower surface into which packing is fitted. Further, the valve body 6 has a connecting portion 61, a guide portion 62, and a handle 63 formed on the upper surface thereof.
The connecting portion 61 has a substantially C shape having a notch, and the valve shaft 54 is engaged when the construction is completed. The inner diameter of the connecting portion 61 is smaller than the outer diameter of the valve shaft 54 and larger than the outer diameter of the groove portion 55 formed in the valve shaft 54.
The guide portion 62 is a rib extending in a plan view fan shape from both ends of the connecting portion 61 toward one end side of the valve body 6, and is formed to guide the valve shaft 54 to the connecting portion 61.
The handle 63 extends to the other end side of the valve body 6 and is formed with an opening for a user to hook a finger when attaching / detaching the valve body 6 and the valve shaft 54.

The valve body 6 is connected by arranging the connecting portion 61 in the groove portion 55 of the valve shaft 54, and when the drain plug device 1 is operating, the drain port 17 is opened by being pulled up from above by the valve shaft 54. At the same time, the drainage port 17 is closed by being pushed down from above by the valve shaft 54.

In the drain plug device 1, when assembling the valve body 6 and the valve shaft 54, the handle 63 is gripped, and the valve shaft 54 is notched in the direction orthogonal to the axial direction, that is, from the substantially horizontal direction. Is pressed against the groove 55 of the valve shaft 54. As a result, the connecting portion 61 is expanded by the valve shaft 54, and the valve body 6 and the valve shaft 54 are connected. When the connection is released, the valve body 6 can be pulled in the direction opposite to that at the time of connection to release the connection.

The drain plug device 1 operates as follows. Although FIGS. 3, 5, and 6 are cross-sectional views, some members such as the valve shaft 54 and the valve body 6 are shown without showing a cross section in order to facilitate understanding of the invention. ..

As shown in FIGS. 3 and 6A, when the valve body 6 is in the lowered state, the valve body 6 is placed on the drainage port 17 formed on the first wall surface 16 and fitted around the valve body 6. The drain port 17 is blocked by the packing. Here, when a pushing operation is applied to the switch portion 21, the inner wire slides in the outer tube toward the valve body 6. As a result, the inner cylinder 41 of the cylinder portion protrudes downward from the outer cylinder 42, comes into contact with the second gear 52, and lowers the second gear 52. Further, as the second gear 52 descends, the first gear 51 rotates to raise the third gear 53.
When the valve shaft 54 rises in conjunction with the rise of the third gear 53, the valve body 6 is pulled up from above by the valve shaft 54. At this time, as the valve body 6 is displaced upward, the drain port 17 opens as shown in FIG. 5, and the internal gear of the lock mechanism 3 is engaged to maintain the raised state of the valve body 6. To. Then, when the drainage port 17 opens, the hot water stored in the tank body 10 is directly discharged from the drainage port 17 onto the bathtub pan. The drainage discharged on the bathtub pan is discharged to the sewage side through a drain trap (not shown).
When the drainage port 17 is opened, the valve body 6 separated from the drainage port 17 is arranged in the storage portion 19 of the second wall surface 18 formed above the first wall surface 16. At this time, as shown in FIGS. 5 and 6B, the outer edge portion of the lower end of the valve body 6 is substantially flush with the peripheral edge of the storage portion 19, that is, the second wall surface 18, so that the valve body 6 and the tank body 10 are formed. Is continuous without steps.
Next, when a pushing operation is applied to the switch portion 21 again from the state where the valve body 6 is raised, the meshing of the gear in the lock mechanism 3 is released, and the inner wire and the inner cylinder 41 are moved by the action of the return spring. Retreat to the switch unit 21 side. At this time, the valve shaft 54 is lowered by the urging of the spring 56, the valve body 6 is displaced downward, and the fitted packing comes into contact with the peripheral edge of the drain port 17, so that the drain port 17 is closed. Therefore, it becomes possible to store hot water in the tank body 10.

In the drain plug device 1, when the drain port 17 is opened, the valve body 6 separated from the drain port 17 formed on the first wall surface 16 is arranged in the storage portion 19 formed on the second wall surface 18. The bottom surface and the outer edge portion are substantially flush with the second wall surface 18. Here, when the user cleans the valve body 6 without removing it, he / she puts his / her hand in the protruding portion 15 for cleaning, but in the state where the valve body 6 is arranged in the storage portion 19, the valve body 6 and the tank body 10 are used. Since there are no gaps or steps that hinder cleaning, cleaning can be easily performed.
The side surface of the valve body 6 arranged in the storage portion 19 on the side wall portion 12 side is exposed toward the tank body 10. Therefore, when removing the valve body 6, the handle 63 is grasped from the exposed side surface, and the valve body 6 is pulled in a substantially horizontal direction to release the connection with the valve body 54, and only the valve body 6 is removed. Can be cleaned.

In the first embodiment, the side surface and the lower surface of the storage portion 19 formed on the second wall surface 18 are open on the side wall portion 12, and the valve body 6 can be gripped from the opened side surface. However, as in the second embodiment shown in FIGS. 7 and 8, the accommodating portion 19 may be recessed so as to cover the entire circumference of the valve body 6, and only the lower surface may be open. With this configuration, when the drain port 17 is opened, the valve body 6 is completely arranged in the storage portion 19 and cannot be seen by the user, so that the design of the drain plug device 1 is improved. It is possible to make it. When removing the valve body 6 according to the second embodiment, the valve body 6 is pulled in a substantially horizontal direction in a state where the valve body 6 is separated from the drain port 17 and is at a height position not arranged in the storage portion 19. As a result, only the valve body 6 can be cleaned by disconnecting the connection with the valve shaft 54. Further, in the first embodiment, the first wall surface 16 and the second wall surface 18 are integrally formed with the members constituting the bottom wall portion 11 and the side wall portion 12 of the tank body 10, but as in the second embodiment, The first wall surface 16 and the second wall surface 18 may be formed of members different from the members constituting the bottom wall portion 11 and the side wall portion 12 of the tank body 10.

Further, in each embodiment, the first wall surface 16 is the lower surface of the tank body 10 and is a substantially horizontal bottom wall surface, but the first wall surface 16 is inclined as in the third embodiment shown in FIG. It is a wall surface, and the valve body 6 may be displaced in an oblique direction. In addition to the diagonal direction, the first wall surface 16 may be a substantially vertical wall surface, and the valve body 6 may be displaced in the substantially horizontal direction to open the drain port 17. Therefore, the shape / forming location of the first wall surface 16 and the second wall surface 18 is not limited at all.

Although the embodiment of the present invention is described above, the present invention is not limited to the shape of each of the above embodiments, and various design changes may be made without departing from the gist of the invention. For example, in each of the above embodiments, the valve body is configured to open the drainage port by being pulled up from above with the operation of the operation unit, but the drainage port is pushed up from below with the operation of the operation unit. May be configured to open.
Further, although the second wall surface is formed on the tank body itself in each embodiment, it may be formed by arranging another member above the drainage port.
Further, the second wall surface does not necessarily have to be formed directly above the drainage port, and may be formed in an oblique direction of the drainage port or in another place. Therefore, the displacement direction of the valve body due to the operation of the drain plug device is not limited to the vertical direction, and may be displaced in the diagonal direction or the horizontal direction.
Further, the tank body of the present invention is not limited to the bathtub, and may be a wash bowl, a sink or other tank body.

1 Drain plug device 10 Tank body 11 Bottom wall part 12 Side wall part 13 Corner part 15 Protruding part 16 First wall surface 17 Drainage port 18 Second wall surface 19 Storage part 20 Operation part 21 Switch part 3 Lock mechanism 4 Transmission member 41 Inner cylinder 42 Outer cylinder 5 Elevating part 51 First gear 52 Second gear 53 Third gear 54 Valve shaft 55 Groove part 56 Spring 6 Valve body 61 Connecting part 62 Guide part 63 Handle

Claims (4)

The tank body with the drainage port and
Equipped with a valve body that is displaced by the operation unit and opens and closes the drainage port.
The tank body has a first wall surface on which a drainage port is formed and a second wall surface formed in the displacement direction of the valve body.
A drain plug device characterized in that the outer edge of the valve body is substantially flush with the second wall surface when the drain port is opened. The second wall surface
The drain plug device according to claim 1, wherein the drain plug device is formed above the first wall surface. The valve body is
The drain plug device according to claim 1 or 2, wherein the drain port is opened by being pulled up to the second wall surface by operating the operation unit. The second wall surface
The drain plug device according to any one of claims 1 to 3, further comprising a storage portion in which a valve body is housed when the drain port is opened.

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