JP2016014227A - Drain plug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain plug device that prevents insufficient closing of a drain and water leakage from the drain, by engaging a valve body and a valve shaft of the drain plug device securely in an appropriate condition.SOLUTION: A drain plug device comprises a valve body 2 that opens and closes when an exhaust port of a tank B is moved up and down, and a valve shaft 3 engaged with and connected beneath the valve body 2 for supporting and moving up and down the valve body 2. The valve shaft 3 is provided with an engaging part 5 while the valve body 2 is provided with an engaged part 4 to be engaged with the engaging part 5 of the valve shaft 3, and a clearance space is formed along a side surface of the engaging part 5 and the engaged part 4 when the engaging part 5 and the engaged part 4 are engaged.

Description

  The present invention relates to a drain plug device, and more specifically, in a drain plug device that opens and closes a drain port of a tank body by moving the valve shaft up and down in a state where the valve body and the valve shaft are fitted. The present invention relates to a drain plug device for preventing a problem that water leakage occurs due to insufficient closing of the water.

Conventionally, in order to treat the drainage generated inside the tank body, such as a bathtub or basin, a drain port is provided on the bottom surface of the tank body, and in the drain pipe for discharging the drainage from this drain port, a valve shaft is placed in the drain port. A drain plug device that opens and closes the drain port by vertically moving the valve body fitted to the valve shaft by moving the valve shaft up and down by fitting the valve body to the tip of the valve shaft. Well known.
Hereinafter, a conventional example of the drain plug device will be described.
The conventional drain plug device described in Patent Document 1 is a drain plug device employed in a drain pipe of a bathtub that is a kind of tank body, and includes a drain port body, a support member, a joint member, and an operation described below. Part, a valve body, a release wire having a valve shaft, a guide tube, and the like.
The bathtub is a box that is open at the top, and has an attachment opening for attaching the drainage outlet main body to the bottom surface thereof.
The drain port body is a member having a substantially cylindrical shape, and a flange portion protruding in the side surface direction is provided on the outer peripheral side of the upper end portion, and a male screw is threaded on the lower outer surface of the flange portion. A drain outlet is formed in the interior. Moreover, the convex part for fitting a support member to a drain outlet is provided.
The support member is a member that arranges and fixes the end portion of the release wire in the drain port, and the outer tube end portion is connected to the central portion thereof, and the outer peripheral portion is in contact with the inner periphery of the drain port to provide a positioning guide. While performing, it is provided with the leg part fitted with the convex part of a drain outlet.
The joint member is a member having a substantially cylindrical shape with a bottom, a female screw that engages with a male screw of a drain port member in an upper opening, and a discharge port for discharging internal drainage on a side surface. Each is provided with an insertion port for inserting a wire.
An operation part is a member attached to the upper edge of a bathtub, Comprising: It is a member for operating opening / closing of a drain outlet.
The valve body is a member that closes the upper end of the drainage port, and is a substantially disc shape, a disc portion that closes the drainage port, and a cylindrical hollow portion provided on the lower center surface of the disc portion. Consists of joints.
The release wire is flexible in the lateral direction and has an outer tube having rigidity in the axial direction, and is slidably disposed in the outer tube, and has flexibility in the lateral direction and rigidity in the axial direction. An inner wire, a valve shaft that is a rod-like hard member provided at one end of the inner wire, and a release wire, and the inner wire is attached to the outer tube on the opposite side of the valve shaft. And a return spring.
The diameter of the cylinder at the tip portion of the valve shaft is substantially the same as the diameter of the cylinder at the recessed portion of the fitted portion. Further, the valve shaft is provided with a groove on a side surface, and an O-ring made of an elastic body is fitted into the groove to constitute a fitting portion.
In the following description of the conventional example, the release wire of each example, the inner wire moves toward the valve shaft with respect to the outer tube and moves in the direction of opening the drain port, “the inner wire advances”, The movement of the inner wire toward the operation portion with respect to the outer tube and moving in the direction of closing the drain outlet is referred to as “inner wire retreating”.
Although not shown, the release wire has a holding mechanism for fixing / releasing the forward movement of the inner wire with respect to the outer tube by applying an operation to the operation portion when construction is completed (“Thrust lock mechanism” in Patent Document 1). And a holding mechanism section provided with a description). Although the holding mechanism itself of the holding mechanism section does not have a function of retracting the inner wire relative to the outer tube even if the fixing is released, the release wire return spring acts on the outer tube by releasing the fixing. On the other hand, the inner wire moves backward.
The guide tube is a tube tube made of soft vinyl chloride that has rigidity in the axial direction and flexibility in the lateral direction, connecting from the operation unit to the insertion port, and inserts the release wire inserted through the operation unit. It is comprised so that it may guide inside a coupling member from an opening | mouth.
The drainage pipe using the drain plug device configured as described above is applied to the bathtub as follows.
The drain outlet main body is inserted into the mounting hole of the bathtub, and the lower surface of the flange portion of the drain outlet main body is brought into contact with the upper surface of the peripheral edge of the mounting hole. Further, the female screw of the joint member is screwed into the male screw of the drain port body, and the periphery of the mounting hole is sandwiched between the lower surface of the flange portion and the upper surface of the joint member to fix the drain port body and the joint member to the bathtub.
Next, the operation unit is attached to the upper edge of the bathtub, and the operation unit and the insertion port of the joint member are connected by a guide tube.
Next, the release wire is inserted into the joint member through the guide tube and the joint member through the operation portion. Further, the tip of the release wire is pulled up from the drain port of the drain port main body and connected to the support member, and then the support member is connected and fixed to the drain port.
Further, the valve shaft at the tip of the release wire is connected to the valve body, and the construction of the drain plug device is completed.
When using the drain plug device configured as described above, the valve body is first lowered with respect to the drain port, and the drain port is closed. At this time, the water stop surface of the valve body is in contact with the periphery of the drainage port to cover the drainage port in a watertight manner and close the drainage port.
When the operation portion is operated from this state and the inner wire is advanced to the valve body side, the end portion of the inner wire on the valve shaft side protrudes to push up the valve body, thereby opening the drain port. Furthermore, the state in which the inner wire advances and the drain port opens is maintained by the action of the holding mechanism.
When the operation unit is operated again from this state and the holding mechanism is released from the fixed state, the inner wire moves backward toward the operation unit due to the weight of the valve body and the action of the return spring of the release wire. As a result, the valve body moves down together with the valve shaft, the drainage port and the water stop surface of the valve body come into contact with each other, and the drainage port is closed.
Thereafter, by repeating the above operation, the drain port can be opened and closed in the drain plug device.
In addition, when the drainage port is closed, the water discharge / drainage can be stored inside the tub, which is the tank body, and when the drainage port is opened, the water discharge / drainage collected inside the tub, which is the tank body, can be stored. The water can be discharged from the drain port to the sewage side through the drain port body and the inside of the joint member.
In this conventional example, a drain plug device that remotely opens and closes a drain port by applying an operation to an operation unit that is spaced apart from a valve body that actually moves up and down to open and close the drain port, that is, remotely operated drainage. It is a stopper device.
JP 2002-88553

The drain plug device configured as described above has the following problems.
The case where the drain outlet is closed with the drain plug device is a case where water discharge / drainage is normally stored in the tank body. For example, in the case of a bathtub as in the above-described conventional example, the drain outlet is closed when bath water is stored inside the bathtub for bathing. For this reason, when the drainage port is closed, it is a serious problem that the water discharge / drainage accumulated in the tank body causes water leakage from the closed drainage port.
However, in the above-described conventional example, there is a problem that the drainage port cannot be reliably closed unless the valve body and the valve shaft are securely and properly fitted.
In detail, naturally, the inner wire of the release wire and the valve shaft are different in thickness and strength, and the valve shaft is much thicker than the inner wire. For this reason, it is impossible for the valve shaft to enter into the outer tube, or to move back and forth, and it is impossible to move back beyond the position where the lower end (rear end) of the valve shaft contacts the end of the outer tube. is there. Actually, the end portion of the outer tube has a structure for connecting to a support member such as a screw, and the valve shaft cannot be further retracted beyond this structure.
In consideration of this point, each member of the drain plug device is “in a state where the valve shaft is most retracted (lowered), that is, in a state where the valve shaft is in contact with the outer tube end portion or the structure provided on the outer tube. The water stop surface of the valve body connected to the valve shaft is designed to abut against the peripheral edge of the drain port and close the drain port.
In an actual product, the lower end (rear end) of the valve shaft is connected to the outer tube end or outer tube when the valve body is connected to the valve shaft and the valve body is in contact with the peripheral edge of the drain port. It is configured so that a slight play space (gap) is generated from the provided structure, and is configured to ensure contact between the drain port and the valve body.
Furthermore, in the above conventional example, when the inner wire is retracted, the return spring provided on the release wire allows the water stop surface of the valve body not only to the weight of the valve body but also to the peripheral edge of the drain opening due to the elasticity of the return spring. It is configured to be urged in the abutting direction so that the drain outlet is securely closed.
However, the valve body and the valve shaft may not be properly fitted, that is, the fitting portion of the valve shaft may not be pushed into the fitted portion of the valve body. is there. For example, even if the fitting portion of the valve shaft is not pushed into the fitted portion of the valve body, the fitting portion of the valve shaft and the fitted portion of the valve body are both cylindrical, and the side surfaces This is a case in which the user of the drain plug device misidentifies that the valve body and the valve shaft have been fitted together and does not notice that the fitting is incomplete, and the friction is caused by the contact.
When the fitting part of the valve shaft is not pushed into the fitted part of the valve body as far as it will go, the height width from the lower end of the valve shaft to the contact surface of the valve body is fitted correctly. Since the height is higher than the height of the closed state, even if the valve shaft descends to the lowest position, a gap may be formed between the drain port periphery and the contact surface of the valve body, which may cause water leakage. is there.
In addition, when a play space (gap) is provided between the lower end (rear end) of the valve shaft and the end of the outer tube, even if the valve shaft attempts to descend with stress greater than its own weight due to the action of the return spring, When the fitting between the valve shaft and the valve body is incomplete, the urging force is not transmitted to the valve body, the contact between the water stop surface of the valve body and the peripheral edge of the drainage port becomes weak, and water leakage may occur.
In the above conventional example, the valve shaft is provided on the inner wire. However, the above problem is not only in the case where the valve shaft is provided on the inner wire. This is a problem that can occur in all plug devices.
The present invention has been invented in view of the above problems, and in the drain plug device, the valve body and the valve shaft are fitted in a reliable and appropriate state, so that the drain port is not sufficiently closed. Thus, it is an object of the present invention to provide a drain plug device that can prevent water leakage from the drain port.

  The present invention according to claim 1 is a valve body that opens and closes by vertically moving a drainage port of a tank body, and a valve shaft that is fitted and connected below the valve body to move up and down while supporting the valve body. And a fitting part on the valve shaft, and a fitting part that fits the fitting part of the valve shaft on the valve body, and fitting the fitting part and the fitting part. In this state, the drain plug device is characterized in that a gap space is provided on the side surfaces of the fitting portion and the fitted portion.

  In the drain plug device according to claim 2, the fitting portion is configured by a stepped portion provided at the tip of the valve shaft, and the fitted portion is provided on the lower surface of the valve body. The drain plug device according to paragraph 0004, wherein the drain plug device is configured by a claw portion that fits into a step portion of the valve shaft.

  According to a third aspect of the present invention, in the drain plug device, the fitting portion or the fitted portion has a side surface that is substantially vertical and the other side surface is an inclined surface. The drain plug device according to paragraph 0004 or paragraph 0005, wherein a gap space is provided between the side surface of the first portion and the side surface of the fitted portion.

  According to a fourth aspect of the present invention, in the drain plug device according to any one of the paragraphs 0004 to 0006, the valve shaft is connected to a mechanism that moves the valve shaft up and down. This is a drain plug device.

  According to the fifth aspect of the present invention, when the drain port is closed, the valve shaft is urged downward, and the urging causes the valve body fitted to the valve shaft to drain with a stress exceeding its own weight. The drain plug device according to any one of paragraphs 0004 to 0007, wherein the drain plug device is in contact with a peripheral edge of the mouth.

In the first aspect of the present invention, the clearance between the fitting portion of the valve body and the valve shaft is provided on the side surfaces of the fitting portion of the valve shaft and the fitted portion of the valve body. The side part does not generate friction on the side surface, and the fitting part of the valve shaft can be easily inserted into the fitting part of the valve body, and the fitting of the fitting part and the fitting part is completed. Otherwise, the valve shaft is easily separated from the valve body, so that the user of the drain plug device can surely fit the valve body and the valve shaft.
In the present invention described in claim 2, the specific configuration of the present invention can be clarified.
Moreover, in this invention of Claim 3, in a fitting part and a to-be-fitted part, the clearance gap is formed between side surfaces combining the substantially vertical surface and the inclined surface. By configuring in this way, the inclined surface and the substantially vertical surface are in contact with a line instead of a surface, and a gap space is formed between the side surface of the fitting portion and the fitting portion, and the fitting portion is formed. On the other hand, it can be set as the positioned structure in which a to-be-fitted part does not shift | deviate to a horizontal direction.
In addition, the present invention can ensure that the valve body and the valve shaft in the state in which the valve body and the valve shaft are fitted and connected as designed by securely fitting and connecting the valve shaft and the valve body. When the mechanism for moving the valve shaft up and down as described in claim 4 is connected to the valve shaft, water leakage occurs when the fitting between the valve body and the valve shaft is inappropriate and the height dimension is incorrect. It is particularly suitable when employed in a drain plug device that may cause the occurrence of water.
Moreover, this invention is invention for making the contact | abutting with a drain outlet periphery and a valve body favorable by performing the fitting connection of a valve shaft and a valve body reliably, As described in Claim 5 In addition, it is particularly preferable to use a structure that satisfactorily contacts the drain port periphery and the valve body.

It is sectional drawing which shows the closing state of the drain plug apparatus of a 1st Example. It is sectional drawing which shows the drain-port main body vicinity of FIG. It is sectional drawing which shows the opening state of the drain plug apparatus of a 1st Example. It is sectional drawing which shows the drain-port main body vicinity of FIG. It is sectional drawing which shows the combined state of the member relevant to the valve body and valve stem of 1st Example. It is sectional drawing which shows the unfolded state of each member of FIG. It is sectional drawing which shows the drain plug apparatus of a 2nd Example. It is sectional drawing which shows the drain-port main body vicinity of the closed state of FIG. It is sectional drawing which shows the drain-port main body vicinity of the open state of FIG. It is sectional drawing which shows the combined state of the member relevant to the valve body and valve stem of 2nd Example. It is sectional drawing which shows the expansion | deployment state of each member of FIG. It is sectional drawing which shows the drain-port main body vicinity which closed the drain port of the other Example. It is sectional drawing which shows the state which opened the drain outlet of the Example of FIG. It is sectional drawing which shows the combined state of the member relevant to the valve body and valve stem of the Example of FIG. It is sectional drawing which shows the expansion | deployment state of each member of FIG.

Below, the 1st example of the present invention is described, referring to drawings.
The drain plug device of the first embodiment of the present invention shown in FIGS. 1 to 6 is a drain plug device employed in a drain pipe of a bathtub B which is a kind of tank body, and is described below. It is comprised from members, such as the opening | mouth main body 1, the supporting member 6, the coupling member 7, the operation part 8, the valve body 2, the release wire 9 which has the valve shaft 3, and the guide pipe | tube 10.
The bathtub B is a box body that is open at the top, and has an attachment hole for attaching the drain port body 1 to the bottom surface thereof.
The drain port body 1 is a member having a substantially cylindrical shape. A flange portion 1b protruding in the side surface direction is provided on the outer peripheral side of the upper end portion, and a male screw is threaded on the lower outer surface of the flange portion 1b. Thus, a drain port 1a is formed in the interior. Moreover, the convex part 1c for fitting the support member 6 to the drain port 1a is provided.
The support member 6 is a member that arranges and fixes the end portion of the release wire 9 in the drain port 1a, and the end portion of the outer tube 9a is connected to the center portion thereof, and the outer peripheral portion is connected to the inner periphery of the drain port 1a. A leg portion 6a fitted with the convex portion 1c of the drainage port 1a is provided while abutting and guiding the positioning.
The joint member 7 is a member having a substantially cylindrical shape with a bottom. The joint member 7 has a female screw that engages with a male screw of the drain port 1a in an upper opening, and a discharge port 7a that discharges internal drainage on a side surface. And an insertion port 7b for inserting the release wire 9, respectively.
The operation part 8 is a member attached to the upper edge of the bathtub B, and is a member for operating opening / closing of the drain port 1a.
The valve body 2 is a member that closes the upper end of the drain port 1a, and includes a substantially disk-shaped disk part 2a and a fitted part 4 provided at the center of the lower surface of the disk part 2a.
The fitted portion 4 will be described in detail. The fitted portion 4 includes a cylindrical recess portion 4b provided on the lower center surface of the disk portion 2a, and a notch portion that protrudes downward from the periphery of the recess portion 4b. 4c, and a claw portion 4a having a protruding portion 4d projecting toward the center. The lower surface of the claw portion 4a is provided with an inclined surface that increases in diameter downward from the center.
Moreover, the disk part 2a has the water stop surface 4b provided with the packing etc. which contact | abut to the drain outlet 1a periphery on the lower surface of the outer periphery vicinity, and this water stop surface 4b contacts the drain outlet 1a periphery. The drain port 1a is closed.
The release wire 9 has flexibility in the lateral direction, an outer tube 9a having rigidity in the axial direction, and is slidably disposed in the outer tube 9a. A rigid inner wire 9b, a valve shaft 3 which is a rod-like hard member provided at one end of the inner wire 9b, and a release wire 9, and the inner wire 9b is connected to the outer tube 9a. And a return spring 9c that urges the valve shaft 3 to the opposite side.
The valve shaft 3 is provided with a stepped portion 5a whose upper side is reduced in diameter on a side surface, and a tip portion is provided with a conical portion having an inclined surface. The diameter of the lower end of the conical portion is slightly larger than the upper diameter of the step portion 5a, and the claw portion 4a of the engaged portion of the valve body 2 is locked to the joint portion between the conical portion and the step portion 5a. Thus, the valve shaft 3 and the valve body 2 are fitted and connected.
In this embodiment, the valve shaft 3 is fitted and connected to the valve body 2, and when the construction is completed, the lower end (rear end) of the valve shaft 3 is closed when the drain port 1a is covered with the valve body 2. The outer tube 9a is configured to have a slight gap with respect to the end.
Further, the release wire 9 is connected to a holding mechanism portion 11 having a holding mechanism for fixing / releasing the advance of the inner wire 9b with respect to the outer tube 9a.
The holding mechanism part 11 will be described in detail. The holding mechanism part 11 includes a cylindrical casing part 11a in which gears and the like are housed, and a holding shaft that is inserted through the casing part 11a so as to advance and retract. 11b. The casing part 11 a is fixed to the end of the outer tube 9 a of the release wire 9. In addition, the holding shaft 11b is always connected to the end of the inner wire 9b because the inner wire 9b of the release wire 9 disposed coaxially is always urged in the backward direction, that is, the holding shaft 11b side by the action of the return spring 9c. It is brought into contact with the portion and biased in the backward direction.
The holding mechanism portion 11 has the same function as a mechanism such as a knock ballpoint pen by a mechanism such as a gear provided inside the casing portion 11a. That is, the holding mechanism unit 11 is fixed / fixed in a state in which the holding shaft 11b is moved forward with respect to the casing unit 11a every time a push operation is applied to the rear end of the holding shaft 11b by an operation on the operation unit 8 when the construction is completed. Is released, and it is configured to repeat retreating with respect to the casing portion 11a by the action of the return spring 9c of the connected release wire 9.
The guide tube 10 is a tube tube made of soft PVC that connects the operation unit 8 to the insertion port 7b and is rigid in the axial direction and flexible in the side surface direction. The wire 9 is configured to guide the inside of the joint member 7 from the insertion port 7b.

The drainage pipe using the drain plug device configured as described above is applied to the bathtub B as follows.
The drain port body 1 is inserted into the mounting hole of the bathtub B, and the lower surface of the flange portion 1b of the drain port body 1 is brought into contact with the upper surface of the periphery of the mounting hole. Further, the female screw of the joint member 7 is screwed into the male screw of the drain port body 1, and the periphery of the mounting hole is sandwiched between the lower surface of the flange portion 1 b and the upper surface of the joint member 7, thereby connecting the drain port body 1 and the joint member 7 to the bathtub B. To fix.
Next, the operation unit 8 is attached to the upper edge of the bathtub B, and the operation unit 8 and the insertion port 7 b of the joint member 7 are connected by the guide tube 10.
Next, the release wire 9 is inserted into the joint member 7 from the operation portion 8 through the guide tube 10 and the insertion port 7 b of the joint member 7. Further, the tip of the release wire 9 is pulled up from the drain port 1a of the drain port main body 1 and the end of the outer tube 9a is connected to the support member 6, and then the support member 6 is connected and fixed to the drain port 1a.
Furthermore, the valve shaft 3 at the tip of the release wire 9 is connected to the valve body 2, and the construction of the drain plug device is completed.
When the fitting portion 5 and the fitted portion 4 are connected, the fitting portion 5 of the valve shaft 3 is inserted into the fitted portion 4 of the valve body 2. The fitted portion 4 is configured to form the gap space S in the side surface direction, and the surfaces do not contact each other in the side surface direction. Therefore, there is no friction due to contact between the surfaces during insertion, and the valve If it becomes easy to insert the fitting part 5 of the shaft 3 into the fitted part 4 of the valve body 2 as far as possible, and the fitting between the fitting part 5 and the fitted part 4 is not completed, 3 is easily separated from the valve body 2 so that the user of the drain plug device can reliably engage the valve body 2 and the valve shaft 3 (the inclined surface of the upper surface of the conical portion). And the angle of the inclined surface of the lower surface of the claw portion 4a may be in contact with each other temporarily, but in this case, from the direction of contact between the inclined surfaces, The valve shaft 3 is not held by the valve body 2, and if the fitting connection is incomplete, the valve shaft 3 and the valve body 2 are immediately separated / separated, and the user has incomplete connection. Understand immediately).

When using the drain plug device configured as described above, first, as shown in FIGS. 1 and 2, the valve body 2 is lowered with respect to the drain port 1a, and the drain port 1a is closed. To do. At this time, the water stop surface 4b of the valve body 2 is in contact with the periphery of the drain port 1a to cover the drain port 1a in a watertight manner and close the drain port 1a.
In this closed state, the stress acting on the valve body 2 includes the return spring 9c that acts on the valve shaft 3 and lowers the valve shaft 3 in addition to the weight of the valve body 2 and the valve shaft 3. There is urging by the elastic force. This urging force is also transmitted to the valve body 2 fitted to the valve shaft 3, and the valve body 2 is urged downward by a stress higher than its own weight, and the water stop surface 4b is strongly brought into contact with the peripheral edge of the drain port 1a. Thus, the drain port 1a is more reliably closed.
When the operation unit 8 is operated from this state and the rear end of the holding shaft 11b is pushed in to advance the inner wire 9b, the end of the inner wire 9b on the valve shaft 3 side protrudes, as shown in FIGS. As described above, by pushing up the valve body 2, the drain port 1a is opened. Furthermore, the state in which the holding shaft 11b is advanced is fixed by the action of the holding mechanism portion 11, and the inner wire 9b that is in contact with the holding shaft 11b is also fixed in the advanced state, so that the drain port 1a is opened. Is maintained.
When the operation unit 8 is operated again from this state and the fixed state of the holding shaft 11b of the holding mechanism unit 11 is released, the inner wire 9b released by the holding shaft 11b is released from the weight of the valve body 2 and the release wire. 9 is moved back together with the holding shaft 11b toward the operation portion 8 by the action of the return spring 9c. As a result, the valve body 2 moves down together with the valve shaft 3, the peripheral edge of the drain port 1a and the water stop surface 4b of the valve body 2 come into contact, and the drain port 1a shown in FIGS. 1 and 2 returns to the closed state.
Thereafter, by repeating the above operation, the drain port 1a can be opened and closed in the drain plug device.
Further, in the state where the drain port 1a is closed, water discharge / drainage can be stored in the bathtub B which is a tank body, and in the state where the drain port 1a is opened, the water is stored in the bathtub B which is a tank body. The discharged water / drainage can be discharged from the discharge port 1a to the sewage side through the drain port body 1 and the inside of the joint member 7.
In this embodiment, the drain plug device that remotely opens and closes the drain port 1a by applying an operation to the operation unit 8 located at a position separated from the valve body 2 that actually moves up and down to open and close the drain port 1a. This is a remotely operated drain plug device.

In the state where the construction of the drain plug device configured as described above is completed, as shown in FIG. 5 and the like, in the portion above the step portion 5a of the valve shaft 3, that is, in the portion beyond the conical portion at the tip of the valve shaft 3. The fitted portion 4 provided in the valve body 2 has a cylindrical shape, that is, the inner surface forms a substantially vertical surface, and the conical portion which is the fitting portion 5 of the valve shaft 3 disposed therein has an inclined surface. By providing, a gap space S is formed between the side surfaces of the fitting portion 5 and the fitted portion 4.
Further, in the portion below the step portion 5a of the valve shaft 3, that is, the portion below the claw portion 4a of the valve body 2, the fitting portion 5 provided in the valve shaft 3 is cylindrical, that is, the outer surface has a substantially vertical surface. The claw portion 4a, which is the fitted portion 4 arranged around it, is provided with an inclined surface (however, the tip of the claw portion 4a has a slightly vertical surface for securing strength), and is also fitted. A gap space S is formed between the side surfaces of the portion 5 and the fitted portion 4.
As described above, a gap space S is formed between the side surfaces of the fitting portion 5 and the fitted portion 4 by the substantially vertical surface and the inclined surface.
As described above, since the gap space S is provided between the side surfaces of the fitting portion 5 and the fitted portion 4, the fitted portion 4 of the valve body 2 and the fitting portion 5 of the valve shaft 3 are frictioned on the side surfaces. And the fitting portion 5 of the valve stem 3 is easily inserted into the fitted portion 4 of the valve body 2 as far as possible, and the fitting portion 5 and the fitted portion 4 are temporarily provided. If the fitting is not completed, the valve shaft 3 is easily separated from the valve body 2 so that the user of the drain plug device can reliably fit the valve body 2 and the valve shaft 3. I can do it now.
Moreover, in the said Example, the clearance gap S was formed between the side surfaces combining the substantially vertical surface and the inclined surface. A conical lower end portion outer surface at the tip of the valve shaft 3 and an inner surface of a substantially cylindrical portion of the fitted portion 4, and a claw portion 4 a having a stepped portion 5 a portion of the valve shaft 3 and an inclined surface of the fitted portion 4. The tip portion (portion that is closest to the inner diameter side) is in a state in which the inclined surface and the substantially vertical surface are in contact with each other by a line (not a surface), and the gap space S is formed between the side surfaces of the fitting portion 5 and the fitting portion 4. While being formed, it is possible to obtain a positioning state in which the fitted portion 4 is not displaced in the horizontal direction with respect to the fitted portion 5.

In the drain plug device, the valve shaft 3 is connected to the inner wire 9b of the release wire 9 that moves the valve shaft 3 up and down.
In the case of a drain plug device that is not connected to the valve shaft 3 and has a mechanism for moving up and down apart from the valve shaft 3 and that simply pushes up the valve shaft 3 from below when the drain port 1a is opened, Even if the fitting connection of the valve body 2 is inappropriate and the height width (length) between the water stop surface 4b of the valve body 2 and the lower end of the valve shaft 3 is slightly longer than the appropriate length, It can be absorbed by play (gap space S) between the lower end of the valve shaft 3 and can cope with improper connection to some extent.
However, when the mechanism for moving the valve shaft 3 up and down as in the above embodiment is connected to the valve shaft 3, there is naturally play (gap space S) between the push-up mechanism and the lower end of the valve shaft 3. It does not exist, the fitting connection between the valve shaft 3 and the valve body 2 is inappropriate, and the height width (length) between the water stop surface 4b of the valve body 2 and the lower end of the valve shaft 3 is slightly longer than the appropriate length. In this case, a gap may be generated between the water stop surface 4b of the valve body 2 and the peripheral edge of the drain port 1a.
Further, as in the above-described embodiment, when the valve shaft 3 is configured so that the return force of the return spring 9c acts on the valve shaft 3 and the valve shaft 3 descends with a stress greater than its own weight, the valve shaft 3 and the valve body If the fitting connection with the valve body 2 is incomplete, the fitting connection between the valve body 2 and the valve shaft 3 is completely disconnected, or stress in the descending direction acting on the valve shaft 3 is applied to the valve body 2. In some cases, the water stop surface 4b of the valve body 2 and the periphery of the drain port 1a do not come into strong contact with each other.
In such a drain plug device having a structure in which the valve shaft 3 is connected to a mechanism for moving the valve shaft 3 up and down, and in a drain plug device having a mechanism in which the valve shaft 3 is lowered by a stress greater than its own weight, If the fitting connection between the valve shaft 3 and the valve shaft 3 is improper, the possibility of water leakage increases, so that the fitting portion 5 of the valve shaft 3 and the fitted portion of the valve body 2 as in the present invention. It is preferable that the configuration 4 is securely connected.

Next, a second embodiment of the present invention will be described with reference to the drawings.
The drain plug device of the second embodiment of the present invention shown in FIG. 7 to FIG. 11 is a drain plug device employed in the drain pipe of bathtub B, which is a kind of tank body, and is described below. It is comprised from members, such as the port body 1, the support member 6 which has the valve shaft 3, the coupling member 7, the operation part 8, the valve body 2, the release wire 9, and the guide pipe | tube 10.
The bathtub B is a box body that is open at the top, and has an attachment hole for attaching the drain port body 1 to the bottom surface thereof.
The drain port body 1 is a member having a substantially cylindrical shape. A flange portion 1b protruding in the side surface direction is provided on the outer peripheral side of the upper end portion, and a male screw is threaded on the lower outer surface of the flange portion 1b. Thus, a drain port 1a is formed in the interior. Moreover, the convex part 1c for fitting the support member 6 to the drain port 1a is provided.
The support member 6 is a member that arranges and fixes the end portion of the release wire 9 in the drain port 1a, and the end portion of the outer tube 9a is connected to the center portion thereof, and the outer peripheral portion is connected to the inner periphery of the drain port 1a. A leg portion 6a fitted with the convex portion 1c of the drainage port 1a is provided while abutting and guiding the positioning.
The holding mechanism part 11 will be described in detail. The holding mechanism part 11 includes a cylindrical casing part 11a in which gears and the like are housed, and a valve that is inserted through the casing part 11a so as to freely move up and down. A shaft 3 and a lowering spring 12 that urges the valve shaft 3 downward are provided.
The valve shaft 3 will be described in detail. The valve shaft 3 is a substantially cylindrical member whose top is closed,
The fitting portion 5 provided at the upper end portion is provided with a step portion 5a whose upper side is reduced in diameter on the side surface, and a tip portion is provided with a conical portion having an inclined surface. The diameter of the lower end of the conical portion is slightly larger than the upper diameter of the step portion 5a, and the claw portion 4a of the engaged portion of the valve body 2 is locked to the joint portion between the conical portion and the step portion 5a. Thus, the valve shaft 3 and the valve body 2 are fitted and connected. In addition, unlike the step part 5a which consists of the horizontal direction of the 1st Example, the diameter reduction part of the downward direction of the step part 5a of a present Example is comprised by the inclined surface which diameter-expands below as evident from drawing. However, even if this part comes into contact with the lower surface of the claw portion 4a, it is not in a positional relationship that causes a stationary state due to friction between the valve body 2 and the valve shaft 3 in the vertical direction, and the inclined surface below the claw portion 4a. Since the inclination angle of the stepped portion 5a is changed, a gap space S is formed between them, so that there is no problem of fitting connection between the valve body 2 and the valve shaft 3. ing.
The holding mechanism unit 11 has a function similar to that of a mechanism such as a knock-type ballpoint pen by a mechanism such as a gear provided inside the casing unit 11a. That is, when the construction is completed, the tip of the inner wire 9b is housed in the valve shaft 3, and each time the inner wire 9b of the release wire 9 moves forward by the operation of the operation portion 8, the valve shaft 3 is inserted into the tip of the inner wire 9b from the inside. It is configured to be pushed up, fixed / unfixed in a state where it is raised with respect to the casing part 11 a, and repeatedly lowered with respect to the casing part 11 a by the action of its own weight and the lowering spring 12.
When the construction is completed, the end of the outer tube 9a of the release wire 9 is fixed to the lower end of the casing 11a. Moreover, it arrange | positions so that the inner-wire 9b end part of the release wire 9 may become coaxial inside the valve shaft 3. FIG. However, in a state where the drain port 1a is closed, that is, in a state where the valve shaft 3 is lowered most and the inner wire 9b is retracted most, there is a gap between the top surface inside the valve shaft 3 and the tip of the inner wire 9b. A slight gap space S is formed.
The joint member 7 is a member having a substantially cylindrical shape with a bottom. The joint member 7 has a female screw that engages with a male screw of the drain port 1a in an upper opening, and a discharge port 7a that discharges internal drainage on a side surface. And an insertion port 7b for inserting the release wire 9, respectively.
The operation part 8 is a member attached to the upper edge of the bathtub B, and is a member for operating opening / closing of the drain port 1a.
The valve body 2 is a member that closes the upper end of the drain port 1a, and includes a substantially disk-shaped disk part 2a and a fitted part 4 provided at the center of the lower surface of the disk part 2a.
The fitted portion 4 will be described in detail. The fitted portion 4 includes a cylindrical recess portion 4b provided on the lower center surface of the disk portion 2a, and a notch portion that protrudes downward from the periphery of the recess portion 4b. 4c, and a claw portion 4a having a protruding portion 4d projecting toward the center. The lower surface of the claw portion 4a is provided with an inclined surface that increases in diameter downward from the center.
Moreover, the disk part 2a has the water stop surface 4b provided with the packing etc. which contact | abut to the drain outlet 1a periphery on the lower surface of the outer periphery vicinity, and this water stop surface 4b contacts the drain outlet 1a periphery. The drain port 1a is closed.
The release wire 9 is provided with an outer tube 9a having rigidity in the lateral direction and an axially rigid outer tube 9a and slidably disposed in the inner wire 9b. A rigid inner wire 9b and a return spring 9c provided in the release wire 9 and biasing the inner wire 9b toward the outer tube 9a opposite to the valve shaft 3 are configured.
The guide tube 10 is a tube tube made of soft PVC that connects the operation unit 8 to the insertion port 7b and is rigid in the axial direction and flexible in the side surface direction. The wire 9 is configured to guide the inside of the joint member 7 from the insertion port 7b.

  The drainage pipe using the drain plug device configured as described above is applied to the bathtub B in the same procedure as the drain plug device of the first embodiment described in paragraph 0012.

When using the drain plug device configured as described above, first, as shown in FIGS. 7 and 8, the valve body 2 is lowered with respect to the drain port 1a, and the drain port 1a is closed. To do. At this time, the water stop surface 4b of the valve body 2 is in contact with the periphery of the drain port 1a to cover the drain port 1a in a watertight manner and close the drain port 1a. Further, the inner wire 9b is retracted to the operation portion 8 side by the action of the return spring 9c.
In this closed state, the stress acting on the valve body 2 includes the weight of the valve body 2 and the valve shaft 3, and the lowering spring 12 acting on the valve shaft 3 to lower the valve shaft 3. There is urging by the elastic force. This urging force is also transmitted to the valve body 2 fitted to the valve shaft 3, and the valve body 2 is urged downward by a stress higher than its own weight, and the water stop surface 4b is strongly brought into contact with the peripheral edge of the drain port 1a. Thus, the drain port 1a is more reliably closed. Since the valve shaft 3 and the inner wire 9b are separated from each other, unlike the first embodiment, the urging force of the return spring 9c does not act in the direction of lowering the valve shaft 3 in this embodiment.
When the operation unit 8 is operated from this state and the inner wire 9b is advanced, the end of the inner wire 9b on the valve shaft 3 side protrudes and comes into contact with the top surface inside the valve shaft 3 to push up the valve shaft 3. Thus, as shown in FIG. 9, the valve body 2 rises together with the valve shaft 3 and the drain port 1 a opens. Further, the raised state of the valve shaft 3 is fixed by the action of the holding mechanism, and the state in which the drain port 1a is opened is maintained. When the operation on the operation unit 8 is completed, the inner wire 9b is retracted to the operation unit 8 side by the action of the return spring 9c.
When the operation portion 8 is operated again from this state and the inner wire 9b is advanced again to the valve shaft 3 side, the end portion of the inner wire 9b on the valve shaft 3 side protrudes and contacts the top surface inside the valve shaft 3. By contacting and pushing up the valve shaft 3, the holding state of the valve shaft 3 is released by the action of the holding mechanism. When the operation to the operation portion 8 is finished and the inner wire 9b is moved back to the operation portion 8 side by the action of the return spring 9c, the valve shaft 3 released from the holding mechanism is released from the valve shaft 3 itself and the valve body 2. Due to its own weight and urging by the lowering spring 12, it descends together with the valve body 2, the peripheral edge of the drain port 1a and the water stop surface 4b of the valve body 2 come into contact with each other, and the drain port 1a shown in FIGS. Return to state.
Thereafter, by repeating the above operation, the drain port 1a can be opened and closed in the drain plug device.
Further, in the state where the drain port 1a is closed, water discharge / drainage can be stored in the bathtub B which is a tank body, and in the state where the drain port 1a is opened, the water is stored in the bathtub B which is a tank body. The discharged water / drainage can be discharged from the discharge port 1a to the sewage side through the drain port body 1 and the inside of the joint member 7.
In this embodiment, the drain plug device that remotely opens and closes the drain port 1a by applying an operation to the operation unit 8 located at a position separated from the valve body 2 that actually moves up and down to open and close the drain port 1a. This is a remotely operated drain plug device.

  In the drain plug device configured as described above, as in the first embodiment, between the side surfaces of the fitting portion 5 of the valve shaft 3 and the fitted body of the valve body 2, as shown in FIG. By providing the clearance space S composed of a substantially vertical surface, the fitted portion 4 of the valve body 2 and the fitting portion 5 of the valve shaft 3 do not generate friction on the side surfaces. The joint portion 5 can be easily inserted into the fitted portion 4 of the valve body 2 as far as it will go, and if the fitting between the fitted portion 5 and the fitted portion 4 is not completed, the valve shaft 3 is By being easily separated from 2, the user of the drain plug device can surely perform the fitting of the valve body 2 and the valve shaft 3, and the fitted portion 4 is fitted to the fitted portion 5. It became the structure which can be set as the positioning state which does not shift | deviate to a horizontal direction.

In the drain plug device, since the valve shaft 3 is integrally connected to a holding mechanism that is a mechanism for moving the valve shaft 3 up and down, similarly to the first embodiment, the valve shaft 3 and the valve body. When the fitting connection of 2 is inappropriate, there is a problem that a gap is generated between the water stop surface 4b of the valve body 2 and the peripheral edge of the drain port 1a.
Further, since the valve shaft 3 is configured so that the valve shaft 3 is lowered by a stress greater than its own weight so that the urging force of the lowering spring 12 acts on the valve shaft 3, the valve shaft 3 is similar to the first embodiment. If the fitting connection between the valve body 2 and the valve body 2 is incomplete, the fitting connection between the valve body 2 and the valve shaft 3 is completely removed, or the stress in the downward direction acting on the valve shaft 3 is reduced. There is a problem that the water stop surface 4b of the valve body 2 and the peripheral edge of the drain port 1a do not contact strongly without being transmitted to the valve body 2.
In such a drain plug device having a structure in which the valve shaft 3 is connected to a mechanism for moving the valve shaft 3 up and down, and a drain plug device having a mechanism in which the valve shaft 3 descends with a stress greater than its own weight. If the fitting connection between the valve body 2 and the valve shaft 3 is improper, the possibility of water leakage increases. Therefore, as in this embodiment, the fitting portion 5 of the valve shaft 3 and the cover of the valve body 2 are covered. It is preferable that the fitting portion 4 is securely connected.

The embodiments of the present invention are as described above, but the present invention is not limited to the above-described embodiments, and can be freely changed without departing from the scope of the present invention.
For example, the first embodiment and the second embodiment are both drain plug devices used for the tub B, but the present invention is not limited to the above embodiment, and includes various types such as a wash basin and a sink. It may be used for drainage equipment. Moreover, although both the first embodiment and the second embodiment are employed in a remote-operated drain plug device, the present invention is not limited to the above-described embodiments, and if necessary, remote operation can be performed. It may be adopted for a drain plug device having no function.

  In the first embodiment, the tip of the inner wire 9b is used as the valve shaft 3, and in the second embodiment, the valve shaft 3 is integrated with the holding shaft 11b of the holding mechanism section 11. The invention is not limited to the above embodiment, and the valve shaft 3 may be configured as a single member separated from the inner wire 9b and the holding mechanism portion 11 as in the embodiment shown in FIGS. good. In the embodiment shown in FIGS. 12 to 15, the holding mechanism portion 11 is provided in the operation portion 8 as in the first embodiment. The release wire 9 has the same configuration as in the second embodiment. The support member 6 has a configuration in which the holding mechanism is excluded from the support member 6 of the second embodiment. The valve shaft 3 is provided as one member provided in the support member 6. In opening and closing the drain port 1a, the valve shaft 3 is maintained in the raised state by the holding mechanism of the operation portion 8 via the inner wire 9b, and when the holding of the holding mechanism is released, the valve body 2 is moved to the valve shaft 3 The valve body 2 is lowered by its own weight and the action of the lowering spring 12, and the drain port 1a is closed.

DESCRIPTION OF SYMBOLS 1 Drain port body 1a Drain port 1b Flange part 1c Protruding part 2 Valve body 2a Disk part 2b Water stop surface 3 Valve shaft 4 Fit part 4a Claw part 4b Depressed part 4c Notch part 4d Convex part 5 Fitting part 5a Step part 6 Support member 6a Leg 7 Joint member 7a Discharge port 7b Insertion port 8 Operation part 9 Release wire 9a Outer tube 9b Inner wire 9c Return spring 10 Guide tube 11 Holding mechanism part 11a Casing part 11b Holding shaft 12 Drop spring B Bathtub S Gap space

Claims (5)

A valve body that opens and closes by vertically moving the drainage port of the tank body;
In a drain plug device comprising a valve shaft that is fitted and connected below the valve body and moves up and down while supporting the valve body,
The valve shaft includes a fitting portion, and the valve body includes a fitted portion that fits with the valve shaft fitting portion,
In the state which fitted the fitting part and the to-be-fitted part, it provided the clearance gap in the side surface of the fitting part and the to-be-fitted part, The drain plug device characterized by the above-mentioned. In the drain plug device,
While configuring the fitting part with a stepped part provided at the tip of the valve shaft,
2. The drain plug device according to claim 1, wherein the fitted portion is constituted by a claw portion that is provided on a lower surface of the valve body and is fitted with a step portion of the valve shaft. In the drain plug device,
A gap space is provided between the side surface of the fitting portion and the side surface of the fitted portion by making either side surface of the fitting portion or the fitted portion a substantially vertical surface and the other side surface an inclined surface. The drain plug device according to claim 1 or 2, characterized in that. In the drain plug device,
The drain plug device according to any one of claims 1 to 3, wherein the valve shaft is connected to a mechanism for moving the valve shaft up and down. When the drain is closed, the valve shaft is urged downward,
The drain plug device according to any one of claims 1 to 4, wherein the valve body fitted to the valve shaft comes into contact with the peripheral edge of the drain port by the stress exceeding its own weight by the biasing. .

Images