JP5597833B2 - Remote-controlled drain plug device - Google Patents

Description

  The present invention relates to a remote-operated drain plug device attached to a tank body such as a wash basin or a bathtub, and more specifically, called a two-way type that opens / closes a drain port by pushing and pulling an operation unit. The present invention relates to a remote control drain plug device.

Remotely operated drainage that can open and close the drainage port by operating the operation unit without touching the water stop valve member provided in the drainage port directly to the tank body such as a wash basin or bathtub. A plug device is used.
A conventional example used for a washstand having a tank will be described below with reference to the drawings.
The conventional remote-operated drainage device shown in FIG. 9 is composed of members such as a valve member, a drain plug body, a drain connection pipe, an operation unit, a release wire, and a drive unit. The structure of each member is described below.
The valve member includes a substantially disc-shaped valve body and a valve shaft that hangs down from the center of the valve body.
The drain plug body is a cylindrical member provided with a drain port on the upper side and a flange on the upper edge, and with a drain passage inside, and is connected to a drain connection pipe described later on the downstream side. .
The drainage connection pipe is formed by bending the middle part of the tubular tube in the lateral direction to form a bent part. An insertion hole is provided at a position directly below the valve shaft on the bottom surface of the bent part, and further downstream from the bent part. The side extends in the lateral direction as it is and is provided with a discharge port.
The operation unit is a member connected to the release wire, connected to the inner wire, connected to the inner tube, and is connected to the outer tube and an operation shaft having a knob portion for gripping the user at the upper end thereof. And an operation portion main body having a cylindrical shape and an operation shaft inserted into the tube so as to be able to advance and retreat. Note that the operating shaft protrudes upward due to the bias of the return spring of the release wire, particularly when no load is applied due to operation or the like.
The release wire is a member that transmits the operation of the operation unit to the drive unit, and has a cylindrical outer tube that is flexible in the lateral direction and rigid in the axial direction, and in the outer tube. And an inner wire that is slidably disposed in the outer tube and has flexibility in the lateral direction and rigidity in the axial direction. One end of the inner wire of the release wire is connected to the lower end of the operation shaft, and the other end is configured to push up the support shaft by contacting the rear end of the support shaft every time the operation portion is pushed. The release wire incorporates a return spring (not shown) that constantly urges the inner wire toward the operating portion with respect to the outer tube.
The drive unit is equipped with a mechanism called a thrust lock mechanism that is used in knock type ballpoint pens, etc. The inside of the drive unit can be moved up and down in the vertical direction, and the raised state is maintained and fixed every time the push operation is performed at the lower end. It is provided with a support shaft that repeats lowering and lowering downward, and as other members, it is provided with a trap pipe for connection to the discharge port of the drain connection pipe.
In addition, the wash bowl of the wash basin where this remote-operated drain plug device is constructed is a tank body that is open at the top, and is attached to the mounting hole that attaches the drain plug to the bottom of the tank body and the periphery of the upper opening. An operation part attachment hole for attaching the part is provided.

When constructing a remote-controlled drain plug device composed of the above-mentioned members on a wash bowl, first attach the drive unit so that the support shaft is inserted into the insertion hole provided in the bent part of the drain connection pipe, and further support The outer tube end is connected and fixed to the drainage connection pipe using a nut or the like while the tip of the inner wire faces the lower end of the shaft, and the drive unit and the release wire are attached to the drainage connection pipe.
Next, the drain plug main body is attached to the mounting hole, and then the drain connection pipe is connected to the drain plug main body. Furthermore, the discharge port of the drain connection pipe and the underfloor pipe on the sewage side are connected via a trap pipe.
Further, the operation unit main body of the operation unit is attached and fixed to the operation unit mounting hole, the inner wire is connected to the operation shaft, and the outer tube end is connected to the operation unit main body. Further, the valve member is disposed inside the drain plug main body from the drain port so that the valve shaft is disposed above the support shaft, and the construction of the remotely operated drain plug device is completed.

When using the remote-operated drain plug device attached as described above, the drain port is first closed, that is, the support shaft is lowered downward. When a push operation is applied to the operation shaft of the operation unit from this state and the inner wire of the release wire is advanced to the drive unit side, the tip of the inner wire pushes up the support shaft of the drive unit, and the support shaft is moved by the action of the thrust lock mechanism. Is supported and fixed in a state where the valve shaft is pushed up, that is, the entire valve member is raised, the valve body is separated from the drain port and the drain port is opened. At this time, the inner wire is retracted to the operation portion side by the action of the return spring.
When the inner wire of the release wire is advanced by pushing the operation shaft of the operation unit again from this state, the tip of the inner wire pushes up the support shaft of the drive unit, and the fixing of the support shaft of the thrust lock mechanism is released, The valve shaft and the support shaft are lowered, and the drain port is closed by the valve body.
Thereafter, by repeating the same operation, the drain port can be freely opened and closed remotely.
Such a remote-operated drain plug device that opens and closes the drain port by an operation in only one direction is referred to as a “one-way remote-controlled drain plug device”.

This one-way remote-operated drain plug device is a remote controller called a “two-way remote-operated drain plug device” that opens and closes the drain port in two directions: push-in operation and pull-up operation. There is an operational drainage device.
Hereinafter, a conventional example of the two-way remote-operated drain plug device will be described with reference to the drawings.
The remote-operated drainage device shown in FIGS. 1 and 2 is composed of members such as a valve member, a drain plug body, a drain connection pipe, a release wire, and a conventional operation unit shown in FIG. The structure of each member is described below.
The valve member includes a substantially disc-shaped valve body and a valve shaft that hangs down from the center of the valve body.
The drain plug body is a cylindrical member provided with a drain port on the upper side and a flange on the upper edge, and with a drain passage inside, and is connected to a drain connection pipe described later on the downstream side. .
The drainage connection pipe is provided with an insertion hole through which the release wire is inserted in the middle part of the cylindrical tube body, and a fixing part for fixing the end of the release wire at a position almost directly below the valve shaft in the pipe, and further on the downstream side. An exit is provided.
The operation unit is a member as shown in FIG. 10, which is a member connected to the release wire, and connected to the inner wire. An operating shaft provided with a knob for gripping by the user at the upper end thereof, an operating body connected to the outer tube, and having a cylindrical shape and allowing the operating shaft to be inserted and retracted therein, and an operating portion And a ring body made of an elastic material such as a rubber material having a circular cross section, which is disposed in the main body.
The release wire is a member that transmits the operation of the operation unit to the valve member, and has a cylindrical outer tube that is flexible in the side surface direction and rigid in the axial direction, and in the outer tube. An inner wire that is arranged and slidably arranged in the outer tube, has flexibility in the lateral direction and has rigidity in the axial direction, and a rod portion provided at the end of the inner wire, Become.
Further, as other members, a trap pipe for connecting to the discharge port of the drain connection pipe is provided.
In addition, the wash bowl of the wash basin where this remote-operated drain plug device is constructed is a tank body that is open at the top, and is attached to the mounting hole that attaches the drain plug to the bottom of the tank body and the periphery of the upper opening. An operation part attachment hole for attaching the part is provided.

When constructing a remote-controlled drain plug device composed of each of the above members on a wash bowl, first insert the release wire into the insertion hole of the drainage connection pipe, and the outer side of the release wire on the side provided with the rod portion on the fixing portion The tube end is fixed so that the tip of the rod portion faces upward and the rod portion moves up and down by the advancement and retraction of the inner wire.
Next, the drain plug main body is attached to the mounting hole, and then the drain connection pipe is connected to the drain plug main body. Furthermore, the discharge port of the drain connection pipe and the underfloor pipe on the sewage side are connected via a trap pipe.
Further, the operation unit body of the operation unit is mounted and fixed in the operation unit mounting hole, the inner wire is connected to the operation shaft, and the outer tube end is connected to the operation unit body. Further, the valve member is disposed in the drain plug main body from the drain port so that the valve shaft is disposed above the rod portion, and the construction of the remotely operated drain plug device is completed.

When using the remote-operated drain plug device attached as described above, first the state where the drain port is closed as shown in FIG. 1, that is, the state where the inner wire is retracted to the operation unit side and the rod unit is lowered And At this time, the step portion of the operating shaft is at a height above the ring. When the knob portion is gripped from this state and pushed into the operation shaft of the operation portion, the rod portion rises and the tip of the rod portion comes into contact with the lower end of the valve shaft. Furthermore, when the knob part of the operation part is gripped and a push operation is applied to the operation shaft of the operation part, the step part of the operation shaft descends beyond the ring of the operation part body, and the rod part pushes up the lower end of the valve shaft. That is, the entire valve member is raised, the valve body is separated from the drain port, and is supported and fixed with the drain port opened as shown in FIG. At this time, due to the friction caused by the contact between the operating shaft and the ring, the operating shaft maintains its position, and as a result, the valve member is raised and the drain port is opened.
When a pulling-up operation is applied to the operation shaft of the operation shaft of the operation unit from this state, the ring of the operation unit main body comes into contact with the stepped portion of the operation shaft to be in an engaged state. When the operation portion is further pulled up, the diameter of the ring body, which is an elastic member, increases the engagement between the step portion of the operation shaft and the ring of the operation portion main body, the operation shaft rises, and the inner wire is operated. Retreat to the club side. The operation shaft is pulled up until the end of the rod part is finally separated from the support shaft of the valve member, that is, the valve shaft and the support shaft are lowered, and the drainage port is closed by the valve body. The drain is closed.
Thereafter, by repeating the same operation, the drain port can be freely opened and closed remotely.

  In addition, regarding the push-up structure of the valve member of the two-way type remote-operated drain plug device, in addition to the method of pushing up and lifting the valve shaft directly from the inner wire end (rod portion) of the release wire as described above, FIG. In some cases, the release wire and the valve member are connected via a lever body as described in Patent Document 3 shown in FIG. Further, through the lever body in this manner, contrary to the remote-operated drain plug device of FIGS. 1 and 2, the valve member is lowered by pushing the operating shaft to close the drain port, and the valve is opened by lifting operation. A two-way remote-operated drain plug device that raises the member and opens the drain port can also be provided.

JP 2004-68327 A JP-A-7-224452 (FIGS. 1 and 2) JP 2000-27257 A

In the two-way remote control drain plug device as shown in FIGS. 1 to 3, in order to maintain the valve member in the raised state, the inner wire of the release wire is maintained in a state of protruding toward the valve member. Need to be fixed. In the two-way remote-operated drain plug device that employs the operation unit shown in FIG. 10, a ring made of a material having elasticity and a high surface friction coefficient, such as rubber, is used in the operation unit. The inner wire protrudes toward the valve member side by utilizing the friction when the abuts.
By the way, when the drain outlet of the tank body which employs the remote-operated drain plug device is open, a force that closes the drain outlet may work. As an example of force to try to close these drains, for example, the water discharged from the faucet provided in the tank body falls on the upper surface of the valve body of the drain with a momentum to lower the valve member, In addition, when the drainage port is closed and drainage is accumulated in the tank body, when the drainage port is opened from this state, the drainage water flowing into the drainage port works to suck the valve body into the drainage port, and the valve member Acts to lower.
For this force to close the drain (force to lower the valve member), the valve member is maintained and fixed by a mechanical thrust lock mechanism like a one-way remote-operated drain plug device. As long as the structure of the remote-operated drain plug device is not damaged, the drainage body will not descend and the drain will not close. However, in the case of a two-way remote-operated drain plug device, the inner wire protrudes to the valve member side using friction when the operating shaft and the ring come into contact with each other, and the valve shaft is pushed up to maintain the state where the drain port is opened. Therefore, when the force to lower the valve member and close the drain port is strong, the valve member is pushed down against the friction force between the operating shaft and the ring, and the drain port remains unintended by the user. In some cases, the open state was closed.
In order to prevent this, in the operation part of the remote-operated drain plug device shown in FIG. 10 shown in FIG. 10, a step part whose diameter is expanded from the middle part of the operation shaft is provided. Even if some force acts to lower the valve member due to the engagement by the contact of the ring, the valve will not be so strong that the ring expands and the engagement between the stepped portion and the ring is released. The structure is such that the member does not descend and the drain outlet does not close.

However, the operation part of the remote-operated drain plug device of the cited document 2 shown in FIG. 10 has the following problems.
1. In the operation portion of the remote-operated drain plug device of FIG. 10, the ring that engages with the step portion needs to expand the diameter in order to get over the step portion. For this reason, as described in paragraph 0013 of Patent Document 2, it is configured using a soft and elastic material such as rubber. One operating shaft is made of a hard material such as metal so that the push-in operation and the lifting operation can be performed accurately, so that the stepped portion made of a hard material gets softer every time it gets over the ring made of a soft elastic material. The surface of the ring, which is the material, is worn away as it is scraped off by the edge of the stepped portion, and eventually the frictional force due to the contact decreases, so that the valve member cannot be maintained in the raised state.
1. In the operation portion of the remote-operated drain plug device of FIG. 10, when closing the drain port, the ring must move below the step portion of the operation shaft.
The movement of the operating shaft at this enlarged diameter portion is more in contact with the surface of the operating shaft as the diameter of the ring increases, so the generated frictional force is larger and the operating shaft is moved more than the operating shaft above the step. The force required for the movement increases, and the difficulty in operating the operation axis increases. In particular, with regard to the closing operation of the drain port, even if it becomes unavoidable that it may be somewhat difficult to prevent the drain port from closing as a malfunction, the drain opening operation is mistakenly caused by drainage. Since malfunctions such as the opening of the drain opening do not occur, increasing the difficulty in operating the operation shaft is merely a problem.
The present invention has been devised in view of the above-mentioned object, and in a two-way remote-operated drain plug device used for a tank body such as a bathtub, a sink, and a wash basin, the impact of falling such as drainage or drainage during drainage The present invention relates to a remote-operated drain plug device that improves operability while preventing a drain port from being accidentally closed by a pulling force.

The present invention described in claim 1
A drain port 1 provided on the bottom surface of the tank body and a valve member 2 disposed in the drain port 1 to open and close the drain port 1 by moving up and down;
An operation unit 3 for opening and closing the valve member 2;
A release wire 4 composed of a cylindrical outer tube 4a that transmits an operation applied to the operation unit 3 to the valve member 2, and an inner wire 4b that is disposed in the outer tube 4a so as to freely advance and retract.
In the remote-operated drain plug device that opens and closes the drain port 1 by pushing and pulling the operation unit 3,
The operation unit 3 is
An operating shaft 5 connected to the inner wire 4b;
An operation portion main body 6 connected to the outer tube 4a and having a cylindrical shape, and the operation shaft 5 is inserted into the tube so as to freely advance and retract;
A step portion 7 provided on either the outer surface of the operation shaft 5 or the inner surface of the operation portion main body 6;
The outer surface of the operation shaft 5 or the inner surface of the operation portion main body 6 was provided on the side where the step portion 7 was not provided.
By providing the notch 8b and providing elasticity, when the force applied to the operation shaft 5 is weaker than an arbitrary certain strength, the step 7 is engaged to limit the progress of the operation shaft 5, An engaging portion 8 having a claw portion 8a for releasing the engagement and allowing the operation shaft 5 to advance when the applied force is greater than an arbitrary strength;
An annular packing 5c provided on the outer peripheral surface of the operation shaft 5 and in contact with the inner peripheral surface of the operation portion main body 6,
Consisting of
The stepped portion 7 is formed at the upper and lower ends of the bulging portion by the middle portion of the outer surface of the operating shaft 5 or the inner surface of the operating portion main body 6 bulging to the engaging portion 8 side.
When the drainage port 1 shifts from the closed state to the open state and the open state is maintained,
And when the drainage port 1 transfers from an open state to a closed state and a closed state is hold | maintained, it is a remote control type drain plug device characterized by overcoming the said bulging part once .

The present invention described in claim 2 is the remote-operated drain plug device according to paragraph 0012 , wherein the step portion 7 and the engaging portion 8 of the operation shaft 5 are made of a resin material. In addition, about the method to comprise the said step part from a resin material, you may comprise the whole operation shaft containing a step part as a resin material, and parts other than the step part of an operation shaft are comprised from a metal material, and the circumference | surroundings It may be configured such that a step portion made of a resin material is molded, and the material of the operation shaft other than the step portion is not particularly limited.

According to the third aspect of the present invention, the strength of an arbitrary force for releasing the engagement between the stepped portion 7 and the engaging portion 8 is as follows:
The remote-operated drain plug device according to paragraph 0012 or paragraph 0013 , wherein the operation shaft 5 is different in operation in one direction and operation in the opposite direction.

In the present invention described in claim 4, the strength of an arbitrary force for releasing the engagement between the stepped portion 7 and the engaging portion 8 is:
Than the force required when operating in the direction to open the drain 1
The remote-operated drain plug device according to paragraph 0014 , wherein a force required when performing an operation in the direction of closing the drain port 1 is stronger.

The present invention according to claim 5 is an operation in one direction of the operation shaft 5 and an operation in the opposite direction.
The difference in the strength of any force at which the engagement between the stepped portion 7 and the engaging portion 8 is released is as follows.
The angle of the contact portion that contacts when the stepped portion 7 engages with the engaging portion 8 is
The remote-operated drain plug device according to paragraph 0014 or paragraph 0015 , which is caused by a difference between an operation in one direction and an operation in a reverse direction.

In the first aspect of the present invention, the engaging portion includes a claw portion that contacts and engages with the stepped portion, so that a relatively hard resin or the like is used instead of an elastic material such as rubber. As a result, it is less likely to be worn compared to the case where an elastic material such as rubber is used even after long-term use, and the reliability can be improved.
In addition , the middle part of the outer surface of the operation shaft or the inner surface of the operation unit main body bulges toward the engagement part, and the upper and lower ends of the bulge part are stepped, thereby maintaining the open state and open state of the drainage port. It became easier and the reliability of the remote-operated drain plug device was improved.
Further, if the step portion is made of a metal material and the engagement portion is made of a resin material, the engagement portion (the claw portion) and the step portion are engaged, and when the engagement is released, the hardness of the material is different. Therefore, where the wear of the engaging portion made of a resin material having a low altitude becomes severe, in the present invention according to claim 2 , since the step portion and the engaging portion are made of the same resin material, both hardnesses are It becomes almost the same, and one side is not particularly worn out, so that a remote-operated drainage device that can be suitably used for a long time can be obtained.
In this invention of Claim 3 , the intensity | strength of the arbitrary force with which the engagement of the said step part and an engaging part is cancelled | released can be adjusted. As a result, the force required when performing the operation in the direction of closing the drain port is stronger than the force required when performing the operation in the direction of opening the drain port as described in claim 4. By setting, the operation of opening the drainage port can be easily performed while preventing malfunction such as closing of the drainage port due to the impact of drainage or pulling in due to the flow of drainage.
In Claim 5 , an example of the specific structure for setting it as the operation part as described in Claim 3 and Claim 4 was able to be clarified.

It is a reference diagram of a two-way type remote-operated drain plug device with a drain port closed. It is a reference figure which shows the state which closed the drain outlet of the remote control type drain plug apparatus of FIG. It is a reference drawing of a wash basin provided with another two-way type remote control type drain plug device. It is sectional drawing which shows the use condition of the operation part of this invention. It is sectional drawing which shows the use condition of the operation part of this invention. It is sectional drawing which shows the use condition of the operation part of this invention. It is sectional drawing which shows the use condition of the operation part of this invention. It is a perspective view which shows the operating shaft and engaging part of the remote control type drain plug device of this invention. It is a reference drawing of a one-way type remote control type drain plug device. It is sectional drawing which shows the operation part of the remote control type drain plug apparatus of a prior art example.

Embodiments of the present invention will be described below with reference to the drawings.
The remote control type drain plug device of the present invention adopting the operation unit 3 shown in FIGS. 4 to 8 includes a valve member 2, a drain plug body 9, a drain connection pipe 10, as shown in FIGS. It is comprised from each member, such as the operation part 3 and the release wire 4. The structure of each member is described below.
The valve member 2 includes a substantially disc-like valve body 2a and a valve shaft 2b that hangs downward from the center of the valve body 2a.
The drain plug body 9 is a cylindrical member provided with a drain port 1 on the upper side and a flange on the upper edge, and with a drain passage inside, and a drain connection pipe 10 described later on the downstream side. Do it.
The drainage connection pipe 10 is provided with an insertion hole 12 through which the release wire 4 is inserted in the middle part of the cylindrical tube body, and a fixing portion 15 for fixing the end of the release wire 4 at a position almost directly below the valve shaft 2b in the pipe. Further, a discharge port 13 is provided on the downstream side.
The operation unit 3 is a member connected to the release wire 4 and includes an operation shaft 5 and an operation unit body 6 described below.
The operation shaft 5 is made of a metal material, and is connected to the inner wire 4b. The operation shaft main body 5a has a circular cross-section and has a middle portion contracted to the inner peripheral side, and a stepped ring fitted into the contracted portion. 7a.
The step ring 7a has an annular shape and is made of a resin material having a smooth surface. When the step ring 7a is fitted into a contracted portion of the operation shaft body 5a, the diameter of the step ring 7a is increased in the outer peripheral direction as compared with the outer peripheral surface of the continuous operation shaft body 5a. By this, it becomes a bulging part, and the step part 7 is formed in two places above and below this bulging part. Of the stepped portions 7 formed at the two upper and lower portions of the operating shaft 5, the upper stepped portion 7 is sharper than the lower stepped portion 7 (the change in the radial direction is larger than the rate of change in the axial direction). (The degree is large). Further, the shaft diameter of the operation shaft 5 further above the upper step portion 7 is larger than the shaft diameter of the operation shaft 5 further below the lower step portion 7. Further, the operating shaft 5 has a diameter larger at the upper part than the stepped portion 7, and is provided with a ring-shaped annular packing 5c on its outer peripheral surface along the peripheral surface. The annular packing 5c is made of a material having elasticity such as rubber and having a relatively high surface friction coefficient.
The operation portion main body 6 is a member that is attached and fixed in the vicinity of the tank body, such as the opening peripheral edge of the wash bowl S, and has a cylindrical shape through which the operation shaft 5 can be moved forward and backward, and at the lower end thereof, the end of the outer tube 4a. The parts are connected. Further, an engagement portion 8 made of resin and formed in a substantially cylindrical shape on its inner peripheral surface and having elasticity so as to expand its diameter by providing a plurality of notches 8b along the axial direction. Prepare.
The engaging portion 8 allows the operation shaft 5 to pass through the cylinder, and engages with the step portion 7 when the force applied to the operation shaft 5 is weaker than an arbitrary strength in the notch 8b. 5 is limited, and when the force applied to the operating shaft 5 is greater than any given strength, the notch 8b portion expands and the cylindrical portion expands to release the engagement with the stepped portion 7. Thus, a claw portion 8a that allows the operation shaft 5 to advance is provided. The cross-sectional shape of the claw portion 8a is such that the angle formed by the central axis of the operation shaft 5 and the surface below the claw portion 8a is larger than the angle formed by the central axis of the operation shaft 5 and the surface above the claw portion 8a. An angle is formed.
Further, in the operation portion 3 configured as described above, the annular packing 5c provided on the operation shaft 5 is always in contact with the inner peripheral surface of the operation portion body 6, and the operation shaft is continuously applied by the frictional force of the contact. 5 is configured to maintain its position with respect to the operation unit main body 6.
The release wire 4 is a member that transmits the operation of the operation unit 3 to the drive unit 11. The release wire 4 has a cylindrical outer tube 4 a that is flexible in the lateral direction and rigid in the axial direction. An inner wire 4b that is disposed in the outer tube 4a, is slidably disposed in the outer tube 4a, has flexibility in the lateral direction, and has rigidity in the axial direction, and an end portion of the inner wire 4b. And a rod portion 4c provided.
Further, as other members, a trap pipe 14 for connecting to the discharge port 13 of the drain connection pipe 10 is provided.
Further, the wash bowl S of the wash basin in which the remote-operated drain plug device is constructed is a tank body that is open at the top, a mounting hole for attaching a drain plug to the bottom of the tank body, and a peripheral edge of the upper opening, An operation unit mounting hole for mounting the operation unit 3 is provided.

When constructing the remote-controlled drain plug device composed of the above members on the wash bowl S, first, the release wire 4 is inserted into the insertion hole 12 of the drain connection pipe 10, and the rod portion 4 c is provided to the fixing portion 15. The end of the outer tube 4a of the release wire 4 on the side is fixed so that the tip of the rod portion 4c faces upward and the rod portion 4c moves up and down as the inner wire 4b advances and retreats.
Next, the drain plug main body 9 is attached to the mounting hole, and then the drain connection pipe 10 is connected to the drain plug main body 9. Further, the discharge port 13 of the drainage connection pipe 10 and the underfloor pipe on the sewage side are connected via a trap pipe 14.
Further, the operation section main body 6 of the operation section 3 is fixedly attached to the operation section mounting hole, and the inner wire 4 b is connected to the operation shaft 5 and the end of the outer tube 4 a is connected to the operation section main body 6. Further, the valve member 2 is disposed in the drain plug body 9 from the drain port 1 so that the valve shaft 2b is disposed above the rod portion 4c, and the construction of the remotely operated drain plug device is completed.

The usage of the remote-operated drain plug device attached as described above will be described below. In each of the following operations as described in paragraph 00 19, an annular packing 5c provided in the operation shaft 5 is always contact with the inner peripheral surface of the operation portion main body 6, the frictional force of the contact, from the outside Unless a force is applied, the operation shaft 5 is configured to continuously maintain its position with respect to the operation portion main body 6. First, as shown in FIG. 1, it is assumed that the drain port 1 is closed, that is, the inner wire 4b is retracted toward the operation portion 3 and the rod portion 4c is lowered. In this state, as shown in FIG. 4, the operation shaft 5 is pulled up to the upper limit height, and the lower side of the operation shaft 5 is positioned higher than the claw portion 8 a of the engagement portion 8 of the operation portion main body 6. The step portion 7 is disposed.
From this state, when the knob portion 5b is gripped and a pushing operation is applied to the operation shaft 5 of the operation portion 3, the lower step portion 7 of the operation shaft 5 and the claw portion 8a of the engagement portion 8 as shown in FIG. Will come into contact and engage. In order to perform further pushing operation from this state, the force required to move the operation shaft 5 against the frictional force between the annular packing 5c and the inner surface of the operation portion main body 6 when the operation shaft 5 is moved so far. Not only the strength (stress) but also the strength of the force required to release the engagement between the lower stepped portion 7 and the engaging portion 8 by further expanding the claw portion 8a of the engaging portion 8 is required. Become. However, as described in paragraph 00 19, drastically reduced diameter upper step portion 7 of the operating shaft 5 and compare the stepped portion 7 of the lower side of the operation shaft 5, the center axis of the operation shaft 5 The cross-sectional shape of the claw portion 8a is such that the angle formed by the central axis of the operation shaft 5 and the surface above the claw portion 8a is lower than the central axis of the operation shaft 5 and the claw portion 8a. The angle formed is smaller than the angle formed by the surface. Therefore, the force required to expand the diameter of the claw portion 8a of the engaging portion 8 in this pushing operation is to increase the diameter of the engaging portion 8 when pulling up the operation shaft 5 described later in paragraph 0022. The force required to release the engagement between the claw portion 8a and the claw portion 8a can be smaller than that (the distance to move the operation shaft 5 to release the engagement is longer than that in the pulling operation). From the engaged state of FIG. 5, when the force is applied to the operation shaft 5 by increasing the diameter of the claw portion 8a of the engaging portion 8 via the knob portion 5b, the lower step portion 7 and By the inclination provided on the contact surface of the claw portion 8a, the claw portion 8a of the engagement portion 8 is pushed out in the outer diameter direction, and the engagement portion 8 is expanded in diameter so that the space between the notches 8b is expanded. The engagement between the step portion 7 and the engaging portion 8 (especially the claw portion 8a) is released, and the operation shaft 5 is further lowered as shown in FIG. As a result, the inner wire 4b connected to the operation shaft 5 also moves to the valve member 2 side, and the tip of the rod portion 4c at the end of the inner wire 4b contacts the lower end of the valve shaft 2b of the valve member 2. When the operating shaft 5 is further lowered, the rod portion 4c is raised accordingly, and the valve member 2 as a whole is raised by pushing up the lower end of the valve shaft 2b, the drain port 1 is separated from the valve body 2a, and the drain port 1 is Open.
When the operating shaft 5 is further lowered, the stepped portion 7 on the upper side of the operating shaft 5 moves below the claw portion 8a beyond the claw portion 8a of the engaging portion 8, and the claw portion 8a whose diameter has been expanded becomes. The diameter is reduced to the state shown in FIG. In the state shown in FIG. 7, the operation shaft 5 can no longer be lowered, and the position of the operation shaft 5 is maintained with respect to the operation portion main body 6 by the friction of the annular packing 5c, and the drain port 1 is shown in FIG. So that it is kept open.

When the knob 5b of the operation unit 3 is gripped from the opened state shown in FIG. 2 and the operation shaft 5 is pulled up, first, the operation unit 3 is positioned above the operation shaft 5 as shown in FIG. The step portion 7 is in contact with and engaged with the claw portion 8 a of the engaging portion 8. In order to perform the lifting operation from this state, not only the strength (stress) necessary to move the annular packing 5c against the frictional force between the annular packing 5c and the inner surface of the operation portion main body 6 but also the engagement portion 8 The strength of the force required to release the engagement between the upper stepped portion 7 and the engaging portion 8 by expanding the diameter of the claw portion 8a is required. Further, as described in paragraph 00 19 , the upper step portion 7 of the two step portions 7 on the upper and lower portions of the operation shaft 5 is rapidly reduced in diameter in the axial direction as compared with the lower step portion 7. In addition, the cross-sectional shape of the claw portion 8a is such that the angle formed by the central axis of the operation shaft 5 and the surface below the claw portion 8a is greater than the angle formed by the central axis of the operation shaft 5 and the surface above the claw portion 8a. An angle that increases is also formed. For this reason, the force required to increase the diameter of the claw portion 8a of the engaging portion 8 in this pulling operation is the step described in paragraph 0021 when the operating shaft 5 is pushed in to increase the diameter of the engaging portion 8. It is necessary to perform with a force stronger than the force necessary to release the engagement between the portion 7 and the claw portion 8a.
From the engaged state of FIG. 7, when a force is applied to the operation shaft 5 in the pulling direction by increasing the diameter of the claw portion 8 a of the engaging portion 8 via the knob portion 5 b, the upper step The claw portion 8a of the engagement portion 8 is pushed out in the outer diameter direction by the inclination provided on the contact surface of the portion 7 and the claw portion 8a, and the engagement portion 8 is expanded in diameter so that the space between the notches 8b is expanded. Then, the engagement between the upper step portion 7 and the engaging portion 8 (particularly the claw portion 8a) is released, and the operating shaft 5 is further raised as shown in FIG. 6 (the force applied to the operating shaft 5 at this time). Is required to apply a force stronger than that required when expanding the diameter of the engaging portion 8 in paragraph 002 1 ). As a result, the inner wire 4b connected to the operation shaft 5 is retracted toward the operation portion 3 side, and is lowered until the valve body 2a comes into contact with the periphery of the drain port 1 and closes the drain port 1, and ends the inner wire 4b. The distal end of the rod portion 4 c is separated from the lower end of the valve shaft 2 b of the valve member 2. When the operation shaft 5 is further raised, the lower step portion 7 of the operation shaft 5 moves above the claw portion 8a beyond the claw portion 8a of the engagement portion 8, and the diameter of the claw portion 8a is increased. Is reduced to the state shown in FIG. If the operating shaft 5 is further raised from this state, the operating shaft 5 reaches the upper limit of upward movement as shown in FIG. The position of the operation shaft 5 is maintained, and the state returns to the state where the drain port 1 shown in FIG. 1 is opened.
Hereinafter, the drain port 1 can be opened and closed by remote operation by repeating the operations described in paragraphs 002 1 and 002 2 .

Oite to the above embodiment, the state in which the drain port 1 is open, that is, the operation unit 3 when the state of FIG. 7, receiving the valve body 2a is an impact and the like water discharge is applied to the valve body 2a, or drainage retraction of When a downward force (stress) is applied to the valve member 2 by the flow, the operation shaft 5 is further raised from the state where the step portion 7 and the claw portion 8a shown in FIG. 7 are engaged. As described above, not only the strength (stress) necessary to move the operating shaft 5 against the friction between the annular packing 5c and the inner peripheral surface of the operating portion body 6, but also the engagement. The strength of the force required to release the engagement between the stepped portion 7 and the engaging portion 8 by expanding the diameter of the claw portion 8a of the portion 8 is required. In particular, the upper step portion 7 of the operation shaft 5 is rapidly reduced in diameter in the axial direction as compared with the lower step portion 7, and the cross-sectional shape of the claw portion 8 a is the same as the central axis of the operation shaft 5. Since the angle formed by the surface above the claw portion 8a is smaller than the angle formed by the central axis of the operation shaft 5 and the surface below the claw portion 8a, the operation shaft 5 is moved upward. In order to increase the diameter of the claw portion 8a of the engaging portion 8, a relatively strong force is required (compared to the case where the drain port 1 is opened). For this reason, unless a considerably strong impact or drainage pulling force is applied to the valve member 2, the valve member 2 does not fall down accidentally and the drain port 1 is not closed.
On the other hand, in the above embodiment, when the drain port 1 is changed from the closed state to the open state, the operation shaft 5 needs to be lowered. At this time, from the state where the lower step portion 7 of the operation shaft 5 is engaged with the claw portion 8a, the engagement portion 8 is expanded in diameter, and the engagement between the step portion 7 and the claw portion 8a of the engagement portion 8 is released. However, the lower step portion 7 of the operation shaft 5 forms a smaller angle with respect to the operation shaft 5 than the upper step portion 7, and the cross-sectional shape of the claw portion 8a is the operation shaft. Since the angle formed by the central axis of 5 and the surface above the claw portion 8a is smaller than the angle formed by the central axis of the operation shaft 5 and the surface below the claw portion 8a, the operation shaft When lowering 5, the engagement between the lower step portion 7 and the claw portion 8 a can be easily released, and the drain port 1 can be easily opened. In the opening operation of the drain port 1, there is no impact caused by the drainage being applied to the valve body 2 a, or the malfunction of the valve member 2 rising due to the water flow of the drainage. A configuration that can easily release the engagement between the claw part 8 and the claw part 8a is preferable.

  Moreover, in the said Example, when the nail | claw part 8a of the engaging part 8 moves between the step parts 7 of the operating shaft 5, ie, the bulging part to an outer peripheral direction, the engaging part 8 expanded in diameter shrinks. The claw portion 8a comes into strong contact with the bulging portion due to the force of diameter, but the engagement portion 8 and the stepped portion 7 are disengaged as described above. If the operation shaft 5 is operated with the engaging portion 8 in the expanded state as shown in FIG. 6, the operation with the annular packing 5c is simply performed. The operation is performed only with the force (stress) necessary to move the operation shaft 5 against the sum of the frictional force with the inner peripheral surface of the head body 6 and the frictional force between the bulging portion of the operation shaft 5 and the claw portion 8a. The shaft 5 can be moved. For this reason, for example, by using a metal or resin material having a smooth surface for the operation shaft 5 or the claw portion 8a, even when the claw portion 8a is in strong contact with the bulging portion, as shown in FIG. The friction force between the bulging portion of the operation shaft 5 and the claw portion 8a can be made small, and the operation itself of the operation shaft 5 can be an easily remote-operated drain plug device.

  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, in the above embodiment, the step portion 7 is configured as the operation shaft 5 and the engaging portion 8 having the claw portion 8a is configured as the operation portion main body 6. However, the present invention is not limited to the above embodiment. Although not shown, the effect of the present invention can be obtained even when the engaging portion 8 having the claw portion 8a is provided on the operating shaft 5 and the stepped portion 7 is provided on the inner peripheral surface of the operating portion main body 6. Can do.

  In the above embodiment, the bulging portion is provided in the side surface direction of the operation shaft 5 and the step portions 7 are provided on the upper and lower sides thereof, so that when the operation shaft 5 shown in FIGS. The operation unit 3 is suitable for a remote-operated drain plug device that raises the member 2 and lowers the valve member 2 when the operation shaft 5 is pulled up. However, the present invention is limited to the above embodiment. However, although not shown, by providing a reduced diameter portion in the side surface direction of the operation shaft 5 and providing step portions 7 above and below the operation shaft 5, the lever shaft 16 shown in FIG. In this case, the valve member 2 can be lowered, and when the operation shaft 5 is pulled up, the valve member 2 can be raised.

  Moreover, in the said Example, although the step part 7 is comprised in the operation shaft 5 and the engaging part 8 which has the nail | claw part 8a is comprised in the operation part main body 6, this invention is not limited to the said Example. Although not shown, the effect of the present invention can also be obtained by providing the operation shaft 5 with the engaging portion 8 having the claw portion 8a and providing the stepped portion 7 on the inner peripheral surface of the operation portion main body 6.

  In the above embodiment, the operation shaft 5 is provided with the annular packing 5c, and the friction force between the annular packing 5c and the operation portion main body 6 is used to maintain the position of the operation shaft 5 with respect to the operation portion main body 6. In addition, in the present invention, the opening state of the drain port 1 is maintained. However, in the present invention, even if the annular packing 5c is not provided, the engagement portion 8 and the operation shaft 5 can be engaged with each other as shown in FIGS. The remote control type drain plug can be maintained by designing each member so that the drain port 1 is closed in the state of FIG. 5 and the drain port 1 is closed in the state of FIG. Can perform the function of the device.

DESCRIPTION OF SYMBOLS 1 Drain port 2 Valve member 2a Valve body 2b Valve shaft 3 Operation part 4 Release wire 4a Outer tube 4b Inner wire 4c Rod part 5 Operation shaft 5a Operation shaft main body 5b Knob part 5c Annular packing 6 Operation part main body 7 Step part 7a Step part Ring 8 Engagement part 8a Claw part 8b Notch 9 Drain plug body 10 Drain connection pipe 11 Drive part 11a Support shaft 12 Insertion hole 13 Discharge port 14 Trap pipe 15 Fixing part 16 Lever body S Washing bowl

Claims (5)

A drain port 1 provided on the bottom surface of the tank body and a valve member 2 disposed in the drain port 1 to open and close the drain port 1 by moving up and down;
An operation unit 3 for opening and closing the valve member 2;
A release wire 4 composed of a cylindrical outer tube 4a that transmits an operation applied to the operation unit 3 to the valve member 2, and an inner wire 4b that is disposed in the outer tube 4a so as to freely advance and retract.
In the remote-operated drain plug device that opens and closes the drain port 1 by pushing and pulling the operation unit 3,
The operation unit 3 is
An operating shaft 5 connected to the inner wire 4b;
An operation portion main body 6 connected to the outer tube 4a and having a cylindrical shape, and the operation shaft 5 is inserted into the tube so as to freely advance and retract;
A step portion 7 provided on either the outer surface of the operation shaft 5 or the inner surface of the operation portion main body 6;
The outer surface of the operation shaft 5 or the inner surface of the operation portion main body 6 was provided on the side where the step portion 7 was not provided.
By providing the notch 8b and providing elasticity, when the force applied to the operation shaft 5 is weaker than an arbitrary certain strength, the step 7 is engaged to limit the progress of the operation shaft 5, An engaging portion 8 having a claw portion 8a for releasing the engagement and allowing the operation shaft 5 to advance when the applied force is greater than an arbitrary strength;
An annular packing 5c provided on the outer peripheral surface of the operation shaft 5 and in contact with the inner peripheral surface of the operation portion main body 6,
Consisting of
The stepped portion 7 is formed at the upper and lower ends of the bulging portion by the middle portion of the outer surface of the operating shaft 5 or the inner surface of the operating portion main body 6 bulging to the engaging portion 8 side.
When the drainage port 1 shifts from the closed state to the open state and the open state is maintained,
A remote-operated drain plug device characterized in that, when the drain port 1 shifts from the open state to the closed state and the closed state is maintained, the bulge portion is overcome only once . The remote-operated drain plug device according to claim 1 , wherein the step portion 7 and the engaging portion 8 of the operation shaft 5 are made of a resin material. The strength of an arbitrary force for releasing the engagement between the stepped portion 7 and the engaging portion 8 is as follows:
The remote-operated drain plug device according to claim 1 or 2 , wherein the operation shaft 5 is different in an operation in one direction and in an operation in the opposite direction. The strength of an arbitrary force for releasing the engagement between the stepped portion 7 and the engaging portion 8 is as follows:
Than the force required when operating in the direction to open the drain 1
The remote-operated drain plug device according to claim 3 , wherein a force necessary for performing an operation in a direction in which the drain port 1 is closed is stronger. In the operation in one direction of the operation shaft 5 and the operation in the opposite direction,
The difference in the strength of any force at which the engagement between the stepped portion 7 and the engaging portion 8 is released is as follows.
The angle of the contact portion that contacts when the stepped portion 7 engages with the engaging portion 8 is
The remote-operated drain plug device according to claim 3 or 4 , which is caused by a difference between an operation in one direction and an operation in a reverse direction.

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