JP7011813B2 - Operation device - Google Patents

Description

The present invention relates to an operating device for remotely controlling a stopper lid provided at a drain port of a tank body.

Conventionally, an operating device for remotely switching the open / closed state of the drainage port formed at the bottom of the tank body (for example, a bathtub, a washbasin, etc.) or its vicinity is provided.

As the operating device, a device including a case, an operating shaft, an outer tube and an inner wire is known (see, for example, Patent Document 1 and the like). The case is attached to the tank body or a structure in the vicinity thereof, and is inserted in a state where the operation shaft can be reciprocated to guide the reciprocating movement of the operation shaft. The operation shaft is a rod-shaped part whose one end side portion projects from one end of the case to the outside of the case and is used as an operated portion. The outer tube has a tubular shape and the inner wire is inserted so that it can be reciprocated. By attaching the side portion to a predetermined component provided on the plug lid side, the inner wire is guided from the operation shaft side to the plug lid side. The inner wire is operated by having one end side portion of itself protruding from one end of the outer tube connected to the other end side portion of the operation shaft, and reciprocating with the operation shaft when the operation shaft is pushed and pulled. The purpose is to transmit the driving force due to the displacement of the shaft to the plug side. In such an operating device, when switching the drainage port from the closed state to the open state, the inner wire is moved together with the operating shaft by pushing the operating shaft. Then, the plug lid is pushed up with the movement of the inner wire, so that the drainage port is switched from the closed state to the open state. On the other hand, when switching the drainage port from the open state to the closed state, the inner wire is relocated together with the operation shaft by pulling the operation shaft. Then, as the inner wire is restored, the plug lid is lowered due to its own weight or the like, so that the drainage port is switched from the open state to the closed state. By pulling the operation shaft to return the inner wire, the plug lid is moved upward to switch the drainage port to the open state, while by pushing the operation shaft to move the inner wire forward, the plug is plugged. There is also a configuration in which the lid is lowered to switch the drainage port to the closed state.

In addition, a cylindrical engaging portion that can engage the outer peripheral portion of the operating shaft is provided inside the case, and the operating shaft is engaged with the engaging portion when the drainage port is open. (For example, refer to Patent Document 2 and the like). According to this technology, when a downward force is applied to the plug lid when the drainage port is open, it is possible to prevent the inner wire and the operation shaft from unintentionally returning, and eventually drainage. It is possible to keep the mouth open more reliably.

By the way, in consideration of hygiene and the like, it is preferable to prevent water from leaking from the inside of the case to the outside of the case. Therefore, in the technique described in Patent Document 2 described above, a sealing member is provided between the inner circumference on one end side of the case and the outer circumference of the operation shaft to prevent water from entering the case, and eventually the inside of the case. It is configured to prevent water from leaking out of the case. The reason why the seal member is provided corresponding to one end side of the case is that the part on one end side of the operation shaft used as the operated part and its surroundings are usually placed in an environment where water easily adheres, so water into the case is provided. This is because a path passing through one end opening (the opening on the side where the operation shaft protrudes) of the case is particularly assumed as the intrusion path of the case.

Japanese Unexamined Patent Publication No. 7-224452 Japanese Unexamined Patent Publication No. 2010-174604

However, as a path for water to enter the case, not only a path passing through one end opening of the case but also a path passing through the other end opening of the case can be considered. That is, since the portion of the outer tube that is arranged on the plug lid side (the other end side portion) is usually installed on the drainage flow path side, water (drainage) has entered the outer tube, which in turn has entered. Water may travel through the outer tube, pass through the other end opening of the case, and enter the case. Therefore, by providing another sealing member between the outer circumference of the outer tube and the inner circumference on the other end side of the case, the two are hermetically sealed, and eventually water passes through the outer tube and temporarily enters the case. Even if it infiltrates, it is conceivable that the water does not leak to the outside through the opening on the other end side of the case.

However, if another sealing member is provided in the configuration provided with the member for holding the operation shaft such as the above-mentioned engaging portion, the number of parts increases and the internal structure becomes complicated, resulting in a decrease in productivity (). For example, the ease of assembling the device may be reduced), or the manufacturing cost may be increased.

The present invention has been made in view of the above circumstances, and an object thereof is an operation capable of more effectively preventing water from leaking from the inside of the case while improving productivity and suppressing an increase in manufacturing cost. To provide the equipment.

Hereinafter, each means suitable for solving the above object will be described separately for each item. In addition, the action and effect peculiar to the corresponding means will be added as necessary.

Means 1. With a cylindrical case,
A rod-shaped operating shaft that is inserted into the case in a reciprocating state, and one end side portion of the case protrudes from the one end opening of the case to the outside of the case to form an operated portion.
A cylindrical outer tube fixed in a state where one end side portion of itself is located inside the other end side portion of the case, and
It is inserted into the outer tube in a state where it can be reciprocated, and one end side portion of itself goes out of the outer tube through the one end opening of the outer tube and becomes the other end side portion of the operation shaft in the case. It is equipped with an inner wire that can be contacted and is configured to be reciprocally movable together with the operation shaft.
By moving the operation shaft and the inner wire forward, the plug lid for opening and closing the drainage port of the tank body is moved upward to open the drainage port, and the plug lid is moved downward to the above-mentioned. While it is possible to close the drainage port, the operation shaft and the inner wire can be moved upward to move the plug lid upward to open the drainage port. The operation device is configured so that the other of the two of lowering the plug lid to close the drainage port is possible.
It is made of a predetermined elastic material and is provided with a seal holding member arranged in the case.
The seal holding member has a shaft configured such that a portion on one end side of the outer tube is arranged and at least the operation shaft is inserted when the drain port is in the open state or the closed state. Other than the holding portion having a hole and elastically holding the operation shaft inserted into the shaft hole, the outer periphery of the one end side portion of the outer tube arranged in the shaft hole, and the case. An operating device characterized by being integrally provided with a sealing portion that is arranged between the inner circumferences of the end side portions and that seals between the two in a watertight manner.

According to the above means 1, at least when the drainage port is in the open state or the closed state, the operation shaft can be brought into a state in which the operation shaft does not easily move by the holding portion that elastically holds the operation shaft inserted into the shaft hole. This makes it possible to more reliably maintain the drainage port in the open or closed state. For example, when the operation shaft is held by the holding portion when the drain port is in the open state, the inner wire and the operation shaft move unintentionally when a downward force is applied to the plug lid. This can be suppressed, and by extension, the drainage port can be more reliably maintained in the open state.

Further, the inside of the outer tube is tentatively provided by a sealing portion that is arranged between the outer circumference of the one end side portion of the outer tube and the inner circumference of the other end side portion of the case and watertightly seals between the outer tube and the case. Even if water enters the case through the case, it can be effectively prevented from leaking from the other end side of the case.

Further, according to the means 1, the seal holding member integrally includes a seal portion and a holding portion having the above-mentioned functions. Therefore, as compared with the case where the seal portion and the holding portion are composed of separate parts, the number of parts can be reduced and the internal structure can be simplified. As a result, it is possible to improve productivity (for example, ease of assembling the device) and suppress an increase in manufacturing cost.

In addition, according to the above means 1, the seal holding member is formed of an elastic material, and by utilizing the elasticity of this material, the operation shaft is more reliably held in the holding portion, and the seal portion is watertight. Can be secured. That is, by forming the seal holding member from an elastic material, it is possible to satisfactorily exhibit the various functions described above in the seal portion and the holding portion while forming the seal holding member from one material. Therefore, the cost related to the manufacture of the seal holding member can be effectively reduced as compared with the case where the seal holding member is configured by using a plurality of materials in order to realize the above-mentioned various functions. As a result, it is possible to more effectively suppress the increase in manufacturing cost.

Examples of the "predetermined elastic material" include elastic rubber and elastic resin.

Means 2. One end opening of the outer tube is in a state of communicating with the shaft hole.
The operating shaft is configured to be inserted into the shaft hole at least when the drainage port is in the open state.
A means characterized in that an operation shaft seal portion is provided on the inner circumference of the holding portion so as to be watertightly contacted with respect to the outer circumference of the operation shaft inserted into the shaft hole over the entire circumference in the circumferential direction. The operating device according to 1.

According to the above means 2, one end opening of the outer tube is in a state of communicating with the shaft hole, and if water enters the outer tube and flows to the one end opening side (operation shaft side), The water is guided to the shaft hole. On top of that, at least when the drainage port is open, the operation shaft seal portion provided on the inner circumference of the holding portion covers the entire circumference in the circumferential direction with respect to the outer circumference of the operation shaft inserted through the shaft hole (annular). It is designed to come into close contact with water. That is, it is configured to watertightly seal the outer periphery of the operation shaft and the inner circumference of the holding portion when the drainage port is in the open state and drainage is likely to enter the outer tube. Therefore, in a situation where water easily enters the outer tube, even if water flows into the case through the outer tube, the water can be reliably retained by the shaft hole, and the water is sealed. It is possible to more reliably prevent leakage to the outside of the holding member. This makes it possible to further improve the effect of preventing water from leaking to the outside of the case.

Means 3. The operation shaft is configured to be always inserted into the shaft hole.
The operating device according to means 2, wherein the operating shaft seal portion is always in close contact with the outer periphery of the operating shaft over the entire circumference in the circumferential direction.

According to the above means 3, the operation shaft is always inserted into the shaft hole, and the operation shaft seal portion is always closed (that is, even when the drain port is open). Even when it is in a state), it is configured to be in watertight contact with the outer periphery of the operating shaft inserted through the shaft hole over the entire circumferential direction. Therefore, whenever water flows through the outer tube into the case, the water can be more reliably retained in the shaft hole and the water leaks out of the seal holding member. It is possible to prevent it from happening more reliably. This makes it possible to further enhance the effect of preventing water from leaking to the outside of the case.

Means 4. The operation shaft is configured to be always inserted into the shaft hole.
The operating device according to any one of means 1 to 3, wherein the holding portion is configured to elastically hold the operating shaft at all times.

According to the above means 4, the operation shaft is always inserted into the shaft hole, and the holding portion is always (that is, even when the drainage port is open, the drainage port is in the closed state). It is configured to hold the operating shaft inserted through the shaft hole (even at one time). Therefore, the open state and the closed state at the drainage port can be more reliably maintained.

It is sectional drawing which shows the operation device in the state attached to the faucet. It is sectional drawing which shows the operation apparatus in the state of being mounted on the wall to be mounted. It is sectional drawing of the operation device when the operation shaft is removed and the drainage port is closed. It is sectional drawing of the operation device when the operation shaft is moved forward and the drainage port is opened. It is a partially enlarged sectional view of the operation device when the operation shaft is removed and the drainage port is closed. It is a partially enlarged sectional view of the operation device when the operation shaft is moved forward and the drainage port is opened. It is sectional drawing of the operation apparatus when the operation shaft is removed and the drainage port is closed in another embodiment in which the operation shaft is always inserted into a shaft hole. It is sectional drawing of the operation apparatus when the operation shaft is moved forward and the drainage port is opened in another embodiment in which the operation shaft is always inserted into a shaft hole. It is a partially enlarged cross-sectional view of the operation apparatus when the operation shaft is revived and the drainage port is closed in another embodiment in which the operation shaft is always inserted into the shaft hole. It is a partially enlarged cross-sectional view of the operation device when the operation shaft is moved forward and the drainage port is opened in another embodiment in which the operation shaft is always inserted into the shaft hole. FIG. 3 is a cross-sectional view of an operating device when the operating shaft is relocated to close the drainage port in another embodiment in which the main cylinder portion is composed of a plurality of members. FIG. 5 is a cross-sectional view of an operating device when the operating shaft is moved forward to open the drainage port in another embodiment in which the main cylinder portion is composed of a plurality of members. In another embodiment, it is a partially enlarged cross-sectional view of an operating device in the case where a locking portion is provided on the operating shaft. In another embodiment, it is a partially enlarged cross-sectional view of an operating device when the operating shaft and the inner wire are not connected.

Hereinafter, one embodiment will be described with reference to the drawings. The operation device 1 remotely controls a plug lid (not shown) for opening and closing a drain port provided in a tank body (for example, a washbasin, a bathtub, a sink, etc.) (not shown) to move the plug lid up and down. This is for switching the open / closed state of the drainage port. In the present embodiment, as shown in FIG. 1, the operating device 1 is attached to a faucet 100 provided corresponding to the tank body, and more specifically, a female screw 101 provided in the faucet 100. On the other hand, it is attached to the faucet 100 by screwing the male screw 21C of the case 2 described later. In addition, in FIG. 1, the faucet 100 is shown in a simplified manner. Further, a pipe (not shown) that serves as a flow path for drainage that has passed through the drainage port is attached to the tank body.

As shown in FIG. 2, the operation device 1 constitutes a part of the tank body or a structure provided in the vicinity of the tank body (for example, a counter of a bathroom vanity). It may be mounted on a water plate-shaped mounting target wall 200 (for example, a flange portion of a washbasin). In this case, the operation device 1 may be mounted on the mounting target wall 200 by screwing the male screw 21C described later into the female screw 201 formed on the mounting target wall 200 from the back side of the mounting target wall 200. Further, the operating device 1 may be mounted on a wall to be mounted extending in the vertical direction. Further, for example, a cylindrical member having a female screw formed on the inner circumference is attached to the mounting target wall in advance, and then the male screw 21C described later is screwed into the female screw of the tubular member to mount the operation device 1. It may be mounted on the wall.

As shown in FIGS. 3 to 6 (not shown in FIGS. 3 and 4), the operating device 1 includes a case 2, an operating shaft 3, an outer tube 4, an inner wire 5, and a seal holding member 6. There is.

The case 2 functions as a mounted portion on the wall to be mounted while holding the operation shaft 3, the outer tube 4, and the like. The case 2 includes a main cylinder portion 21 and a fixed holding portion 22, and has a cylindrical shape as a whole.

The main cylinder portion 21 has a cylindrical shape having a through hole in the center, and the operation shaft 3 is inserted into the main cylinder portion 21 in a state where the operation shaft 3 can be reciprocated. The reciprocating motion of the operation shaft 3 is guided by the inner peripheral surface of the main cylinder portion 21. Further, in the present embodiment, the portion of the inner surface of the main cylinder portion 21 where the attached portion 32A described later of the operation shaft 3 is arranged and the outer surface of the attached portion 32A each have a hexagonal shape with an axial orthogonal cross section. As a result, the relative rotation of the operation shaft 3 (particularly, the wire corresponding portion 32 described later) with respect to the case 2 is prevented. Further, a male screw 21C or the like for attaching to an attachment target such as a faucet 100 is formed at one end of the main cylinder portion 21. When attaching the operating device 1 to the faucet 100 or the like, a seal member 7 for ensuring watertightness may be provided between one end of the case 2 (main cylinder portion 21) and the faucet 100 or the like. (See Figures 1 and 2).

On the other hand, at the other end of the main cylinder portion 21, an engaging portion 21A for attaching the fixed holding portion 22 to the main cylinder portion 21 is provided, and the engaging portion 21A is provided in the radial direction of the main cylinder portion 21. It can be elastically deformed along. Further, a step portion 21B is formed on the inner circumference of the main cylinder portion 21 to prevent the operation shaft 3 from coming off from the case 2.

The fixed holding portion 22 has a role of holding one end side portion of the outer tube 4 and the seal holding member 6. The fixed holding portion 22 is a cylindrical member having a through hole through which an outer tube 4 or the like is inserted in the center and having a recess formed on the outer periphery thereof. The fixed holding portion 22 is inserted into the other end of the main cylinder 21, and the engaging portion 21A is fitted into the recess provided on the outer periphery of the main cylinder 21 so that the fixed holding portion 22 is inserted into the other end of the main cylinder 21. It is installed. In the present embodiment, the fixed holding portion 22 is easily attached to the main cylinder portion 21 by pushing the fixed holding portion 22 into the other end opening of the main cylinder portion 21 by utilizing the elasticity of the engaging portion 21A. Is possible.

The operation shaft 3 is a rod-shaped component that is subject to a push-pull operation by the user when switching the open / closed state of the drainage port. In the present embodiment, the operation shaft 3 is configured by connecting the main body shaft portion 31 and the wire corresponding portion 32 in series. It is not always necessary to connect a plurality of members to form the operation shaft 3, and the operation shaft 3 may be formed by one member.

The main body shaft portion 31 has a configuration in which a columnar base portion 31A and a knob portion 31B having a columnar diameter larger than that of the base portion 31A are arranged in series. The base portion 31A has a wide range of its outer peripheral surface close to the inner peripheral surface of the case 2 (main cylinder portion 21), whereby the case 2 and the operation shaft 3 are reciprocated when the operation shaft 3 reciprocates. Can be maintained in an almost coaxial state. Further, a predetermined male screw is provided on the outer periphery of the end portion (the other end portion) located on the side opposite to the knob portion 31B in the base portion 31A.

The knob portion 31B constitutes a portion on one end side of the main body shaft portion 31, and protrudes from the one end opening of the case 2 to the outside of the case 2. The knob portion 31B functions as a portion to be operated by the user in particular.

The wire corresponding portion 32 is a portion that transmits a force to and from the inner wire 5, and in the present embodiment, has a role of transmitting the driving force due to the displacement of the operation shaft 3 to the inner wire 5. The wire-corresponding portion 32 has a bottomed cylinder shape and a relatively thick attached portion 32A having a hexagonal cross section on the outer surface orthogonal to the axis, and a relatively thin circle protruding from the center of the bottom portion of the attached portion 32A. It is provided with a columnar wire connecting cylinder portion 32B.

The attached portion 32A is a portion mainly responsible for attaching the wire corresponding portion 32 to the main body shaft portion 31. The attached portion 32A is thicker than the main body shaft portion 31, and has a female screw on the inner circumference thereof. By screwing the male screw provided on the outer periphery of the other end of the base 31A to the female screw provided on the inner circumference of the attached portion 32A, the main body shaft portion 31 and the wire corresponding portion 32 are connected in series. It is in the state of being done. As described above, the inner surface of the case 2 and the outer surface of the attached portion 32A have a hexagonal cross section perpendicular to the axis, so that the relative rotation of the wire corresponding portion 32 with respect to the case 2 is prevented. By rotating the main body shaft portion 31, the wire corresponding portion 32 arranged in the case 2 and the main body shaft portion 31 can be easily connected (screwed).

Further, the outermost peripheral portion of the attached portion 32A is in a state of protruding outward from the outer peripheral surface of the main body shaft portion 31 (base portion 31A), and is in contact with the step portion 21B. As a result, it is possible to prevent the operation shaft 3 from coming off from the opening at one end of the case 2 and the operation shaft 3 from being excessively restored.

The wire connection cylinder portion 32B has a cylindrical shape having a diameter smaller than that of the attached portion 32A, and is fixed in a state where one end of the inner wire 5 is inserted into the inner circumference thereof. For example, in the present embodiment, one end of the inner wire 5 is crimped and fixed to the wire connecting cylinder portion 32B. Further, although the wire connection cylinder portion 32B has some irregularities due to crimping and fixing, it basically has a smooth outer peripheral surface with almost no irregularities, and the outer diameter is almost constant except for the tip portion thereof. Is supposed to have.

The outer tube 4 is a long tubular member for guiding the inner wire 5 to the stopper lid side. The outer tube 4 is fixed to the case 2 in a state where one end thereof is arranged inside the other end side portion of the case 2. More specifically, a flange-shaped flare portion 41 is provided at one end of the outer tube 4, and the flare portion 41 is sandwiched between the seal holding member 6 and the fixed holding portion 22, so that one end of the outer tube 4 is formed. It is in a state of being indirectly fixed to the case 2.

Further, one end opening of the outer tube 4 is in a state of communicating with the inside of the shaft hole 63 described later of the seal holding member 6. That is, one end of the outer tube 4 is in a state of being opened in the shaft hole 63. On the other hand, the other end opening (not shown) of the outer tube 4 is arranged in the pipe. That is, the drainage easily enters the outer tube 4 from the other end opening of the outer tube 4. Therefore, it is somewhat likely that water that has entered the outer tube 4 from the other end opening of the outer tube 4 will flow to the one end opening side (operation shaft 3 side) of the outer tube 4 and reach the shaft hole 63. It has become.

The inner wire 5 moves together with the operation shaft 3 when the operation shaft 3 reciprocates, and transmits the driving force due to the displacement of the operation shaft 3 to the plug lid side. The inner wire 5 is composed of, for example, a core coil (contact coil spring), and is inserted into the outer tube 4 in a state of being reciprocating. Further, one end of the inner wire 5 protrudes from the one end opening of the outer tube 4 to the outside of the outer tube 4 and is connected to the other end side portion (wire corresponding portion 32) of the operation shaft 3 in the case 2. ..

In this embodiment, the open / closed state of the drainage port can be switched as follows. That is, by pushing the operation shaft 3 to move the inner wire 5 together with the operation shaft 3 (the state shown in FIGS. 4 and 6), the stopper lid is moved upward to close the drain port. It is possible to switch from the state to the open state. On the other hand, by pulling the operation shaft 3 to move the inner wire 5 together with the operation shaft 3 (the state shown in FIGS. 3 and 5), the stopper lid is moved downward to open the drain port. It is possible to switch from the closed state to the closed state.

The seal holding member 6 is a member that has various functions such as improving the watertightness of the case 2 and holding the operation shaft 3. The seal holding member 6 is formed of a predetermined type of elastic material (for example, elastic rubber such as EPDM rubber, elastic resin such as elastoma (thermoplastic elastoma), etc.), and in the present embodiment, the elastic rubber is used. It is formed.

Further, the seal holding member 6 includes a large diameter portion 61 having a relatively large outer diameter and a small diameter portion 62 having a relatively small outer diameter (see FIGS. 5 and 6), and the outer diameters differ in appearance. The shape is such that two cylinders are stacked coaxially. In the present embodiment, the large diameter portion 61 is sandwiched between the main cylinder portion 21 and the fixed holding portion 22, so that the seal holding member 6 is inside the other end side of the case 2 (main cylinder portion 21). It is in a state of being placed and fixed in. The seal holding member 6 is in a state of being compressed and deformed when it is placed in the case 2. However, FIGS. 3 and 5 show the seal holding member 6 before compression deformation, and FIGS. 4 and 6 show the seal holding member 6. Shows the seal holding member 6 in which only the operation shaft seal portion 66, which will be described later, is compressed and deformed.

Further, the seal holding member 6 has a shaft hole 63 that penetrates the center of the seal holding member 6 and extends in the reciprocating movement direction of the operation shaft 3, and one end side portion of the outer tube 4 is located at the other end side portion of the shaft hole 63. (Flare portion 41) is arranged. Further, in the present embodiment, when the operation shaft 3 and the inner wire 5 are in the forward movement state, that is, when the drain port is in the open state, the operation shaft 3 (wire connection cylinder portion 32B) is connected to the shaft hole 63. Is inserted (see FIG. 6).

In addition, the seal holding member 6 has a cylindrical holding portion 64 that elastically holds the operation shaft 3 (wire connecting tubular portion 32B) inserted through the shaft hole 63, and one end of the outer tube 4 arranged in the shaft hole 63. It is integrally provided with a tubular seal portion 65 that is arranged between the outer circumference of the side portion (flare portion 41) and the inner circumference of the other end side portion of the case 2 (main cylinder portion 21) and that seals watertightly between the two. There is.

The holding portion 64 suppresses the reciprocating movement of the operating shaft 3 by coming into contact with the holding portion 64 while being pressed against the outer peripheral surface of the operating shaft 3. In the present embodiment, the holding portion 64 is provided with an operating shaft sealing portion 66 extending in the circumferential direction of itself on its inner circumference, and the operating shaft sealing portion 66 comes into contact with the operating shaft 3. It is configured to hold the operating shaft 3. Further, when the operation shaft 3 (wire connection cylinder portion 32B) is inserted into the shaft hole 63, the operation shaft seal portion 66 is all around the outer circumference of the operation shaft 3 (wire connection cylinder portion 32B). It comes into close contact with water over the circumference.

The seal portion 65 is composed of the large diameter portion 61, and is formed by the outer circumference of one end side portion (flare portion 41) of the outer tube 4 and the inner circumference of the other end side portion of the case 2 (main cylinder portion 21). It is sandwiched. The seal portion 65 is in watertight contact with the outer periphery of the one end side portion (flare portion 41) of the outer tube 4 and the inner circumference of the other end side portion of the case 2 (main cylinder portion 21). Is watertightly sealed.

In addition, in the present embodiment, when the operation shaft 3 is moved forward to switch the drainage port from the closed state to the open state, the surface of the operation shaft 3 located around the wire connection cylinder portion 32B is a shaft hole. Further movement of the operation shaft 3 is restricted by coming into contact with one end surface of the seal holding member 6 located around the 63.

As described in detail above, according to the present embodiment, the operation shaft 3 can be brought into a state in which the operation shaft 3 does not easily move by the holding portion 64 that elastically holds the operation shaft 3 inserted through the shaft hole 63. As a result, when a downward force is applied to the plug lid when the drain port is open, it is possible to prevent the inner wire 5 and the operation shaft 3 from unintentionally relocating, which in turn causes drainage. The mouth can be kept open more reliably.

Further, since the sealing portion 65 watertightly seals the outer periphery of the one end side portion of the outer tube 4 arranged in the shaft hole 63 and the inner circumference of the other end side portion of the case 2, it temporarily passes through the outer tube 4. Even if water infiltrates into the case 2, it is possible to effectively prevent the water from leaking from the other end side of the case 2.

Further, the seal holding member 6 integrally includes a seal portion 65 and a holding portion 64 having the above-mentioned functions. Therefore, as compared with the case where the seal portion 65 and the holding portion 64 are composed of separate parts, the number of parts can be reduced and the internal structure can be simplified. As a result, it is possible to improve productivity (for example, ease of assembling the device) and suppress an increase in manufacturing cost.

In addition, the seal holding member 6 is formed of a predetermined elastic material, and by utilizing the elasticity of this material, the holding portion 64 holds the operation shaft 3 more reliably, and the seal portion 65 provides watertightness. Can be secured. That is, by forming the seal holding member 6 from an elastic material, it is possible to satisfactorily exhibit the various functions described above in the seal portion 65 and the holding portion 64 while forming the seal holding member 6 from one material. There is. Therefore, the cost related to the manufacture of the seal holding member 6 can be effectively reduced as compared with the case where the seal holding member 6 is configured by using a plurality of materials in order to realize the above-mentioned various functions. As a result, it is possible to more effectively suppress the increase in manufacturing cost.

Further, when the drainage port is in the open state, the operation shaft seal portion 66 provided on the inner circumference of the holding portion 64 extends over the entire circumference in the circumferential direction with respect to the outer circumference of the operation shaft 3 inserted through the shaft hole 63. Contact watertightly (in a ring). That is, when the drainage port is open and drainage easily enters the outer tube 4, the outer circumference of the operation shaft 3 and the inner circumference of the holding portion 64 are watertightly sealed, and one end opening side of the shaft hole 63 is closed. It becomes a state. Therefore, in a situation where water easily enters the outer tube 4, even if water flows into the case 2 through the outer tube 4, the water can be reliably retained by the shaft hole 63. It is possible to more reliably prevent the water from leaking out of the seal holding member 6. This makes it possible to further improve the effect of preventing water from leaking to the outside of the case 2.

In addition, when the operating shaft 3 is moved forward to switch the open / closed state of the drainage port, the operating shaft 3 comes into contact with one end surface of the seal holding member 6 made of an elastic material. Therefore, it is possible to reduce the impact applied to the user via the operation shaft 3 at the time of operation, and it is possible to improve the operation feeling.

The content is not limited to the description of the above embodiment, and may be implemented as follows, for example. Of course, other application examples and modification examples not illustrated below are also possible.

(A) In the above embodiment, the operation shaft 3 (wire connection cylinder portion 32B) is configured to be inserted into the shaft hole 63 only when the operation shaft 3 moves forward and the drain port is in the open state. There is. On the other hand, as shown in FIGS. 7 to 10, the seal holding member 6 is made longer along the reciprocating movement direction of the operation shaft 3, and the portion (wire) of the operation shaft 3 to be inserted into the shaft hole 63. By making the connection cylinder portion 32B) longer, the operation shaft 3 is always inserted into the shaft hole 63 (that is, whether the drain port is open or closed) and held. The operation shaft 3 may be configured to be elastically held by the unit 64 at all times. With such a configuration, it is possible to more reliably maintain the open state and the closed state at the drainage port.

Further, the operation shaft seal portion 66 is always (that is, whether the drain port is open or closed) with respect to the outer circumference of the operation shaft 3 (wire connection cylinder portion 32B) over the entire circumference in the circumferential direction. It may be configured to come into contact with each other. In this case, whenever a situation occurs in which water flows through the outer tube 4 into the case 2, the water can be more reliably retained in the shaft hole 63, and the water retains the seal. It is possible to more reliably prevent leakage to the outside of the member 6. This makes it possible to further enhance the effect of preventing water from leaking to the outside of the case 2.

(B) In the above embodiment, the main cylinder portion 21 is composed of one member, but the main cylinder portion 21 may be composed of a plurality of members. For example, as shown in FIGS. 11 and 12, the main tubular portion 21 may be configured by the cylindrical first constituent portions 211 and the second constituent portions 212, which are connected in series, respectively. Of course, the main tubular portion 21 may be configured by connecting three or more tubular members in series. In order to prevent water leakage from between the members, it is preferable to provide a seal member (for example, the annular seal member 23 in FIGS. 11 and 12) between the connected members.

(C) As shown in FIG. 13, by providing a locking portion 33 to be locked to the inner peripheral portion of the seal holding member 6 on the outer periphery of the operating shaft 3, the forward or backward movement of the operating shaft 3 is restricted. As a result, the drain port may be configured to be more reliably maintained in the open or closed state. In the example shown in FIG. 13, the locking portion 33 is locked to the inner peripheral portion (operation shaft seal portion 66) of the seal holding member 6, so that the return of the operation shaft 3 is restricted and the drainage port is closed. It becomes possible to maintain it more reliably in the open state. Further, the locking portion 33 does not necessarily have to be a protrusion, and may have a concave shape. In this case, the locking portion 33 is locked to the seal holding member 6 by the inner peripheral portion of the seal holding member 6 entering the recessed locking portion 33. Of course, by appropriately setting the position and number of the locking portions 33 and the inner peripheral portions of the seal holding member 6 where the locking portions 33 are locked, the operation shaft 3 can be moved forward and backward. It may be configured so that both can be regulated.

(D) In the above embodiment, the operation shaft 3 (wire corresponding portion 32) and the inner wire 5 are connected to each other, but the return force applying portion that applies a force in the recovery direction to the inner wire 5 is applied. When (not shown) is provided, as shown in FIG. 14, the other end portion of the operation shaft 3 and the inner wire 5 are configured so as to be able to simply come into contact with each other along the reciprocating movement direction of the operation shaft 3. You may. In this case, by pushing the operation shaft 3 while the drainage port is in the closed state, the inner wire 5 moves forward so as to be pushed by the operation shaft 3, and the drainage port is switched to the open state. At this time, the movement of the operation shaft 3 is restricted by the holding of the operation shaft 3 by the seal holding member 6, so that the inner wire 5 is stopped against the force applied from the return force applying portion, the water pressure, and the like. Can be maintained. On the other hand, by pulling the operation shaft 3 while the drainage port is in the open state, the operation shaft 3 is restored, and the inner wire 5 is released from the stopped state and restored by the force applied from the return force applying portion. It moves, and as a result, the drainage port is switched to the closed state. The return force applying portion may be, for example, an elastic member (for example, a spring or the like) that urges the inner wire 5 or the plug lid itself. When the return force applying portion is composed of the plug lid, a force generated by the weight of the plug lid is applied to the inner wire 5 when the open / closed state of the drain port is switched.

(E) In the above embodiment, the inner wire 5 is reciprocated by the push-pull operation of the operation shaft 3 to switch the open / closed state of the drain port. However, every time the operation shaft 3 is pushed and operated. It may be configured so that the open / closed state of the drain port is switched alternately. In this configuration, for example, the return force applying portion (not shown) that applies a force in the recovery direction to the inner wire 5 and the inner wire can be locked with the stopper lid moved upward and the inner wire in the locked state. This can be achieved by providing a lock mechanism (not shown) that can release the locked state when a force in the forward direction is applied to 5. In this case, by pushing the operation shaft 3 while the drain port is closed, the inner wire 5 is moved forward against the force from the return force applying portion, and the plug lid is moved upward. In this state, the plug lid can be locked by the locking mechanism, and as a result, the drain port can be switched to the open state. On the other hand, by pushing the operation shaft 3 while the drainage port is in the open state, the inner wire 5 is moved forward to release the locked state of the plug lid by the lock mechanism, and from the return force applying portion. The drainage port can be switched to the closed state by lowering the plug lid by the force applied from the return force applying portion, its own weight, or the like while removing the inner wire 5 by the force of.

(F) In the above embodiment, the drain port is switched from the closed state to the open state by moving the operation shaft 3 and the inner wire 5 forward, while drainage is performed by removing the operation shaft 3 and the inner wire 5. The mouth is configured to switch from the open state to the closed state. On the other hand, the drainage port is switched from the open state to the closed state by moving the operation shaft 3 and the inner wire 5 forward, while the drainage port is closed by removing the operation shaft 3 and the inner wire 5. It may be configured to switch from the open state to the open state. In this case, the operation shaft 3 (wire connection cylinder portion 32B) may be inserted into the shaft hole 63 and held by the holding portion 64 when the drainage port is closed.

(G) In the above embodiment, when the holding portion 64 holds the operation shaft 3, its inner peripheral surface (operation shaft seal portion 66) extends over the entire circumference in the circumferential direction with respect to the outer circumference of the operation shaft 3. Although they are in contact with each other, they do not necessarily have to be in contact with the entire outer circumference of the operation shaft 3. For example, a plurality of protrusions are arranged in an annular shape on the inner circumference of the holding portion 64 at intervals along the circumferential direction of the holding portion 64, and each protrusion comes into contact with the outer circumference of the operating shaft 3, thereby causing the operating shaft 3 to be formed. It may be configured to hold.

1 ... Operation device, 2 ... Case, 3 ... Operation shaft, 4 ... Outer tube, 5 ... Inner wire, 6 ... Seal holding member, 63 ... Shaft hole, 64 ... Holding part, 65 ... Seal part, 66 ... Operation shaft seal Department.

Claims (4)

With a cylindrical case,
A rod-shaped operating shaft that is inserted into the case in a reciprocating state, and one end side portion of the case protrudes from the one end opening of the case to the outside of the case to form an operated portion.
A cylindrical outer tube fixed in a state where one end side portion of itself is located inside the other end side portion of the case, and
It is inserted into the outer tube in a state where it can be reciprocated, and one end side portion of itself goes out of the outer tube through the one end opening of the outer tube and becomes the other end side portion of the operation shaft in the case. It is equipped with an inner wire that can be contacted and is configured to be reciprocally movable together with the operation shaft.
By moving the operation shaft and the inner wire forward, the plug lid for opening and closing the drain port of the tank body is moved upward to open the drain port, and the plug lid is moved downward to the above-mentioned. While it is possible to close the drain port, the operation shaft and the inner wire can be moved upward to move the plug lid upward to open the drain port, and the drain port can be opened. An operating device configured to allow the other of the closing of the drain port by moving the plug lid down.
It is made of a predetermined elastic material and is provided with a seal holding member arranged in the case.
The seal holding member has a shaft configured such that a portion on one end side of the outer tube is arranged and at least the operation shaft is inserted when the drain port is in the open state or the closed state. Other than the holding portion having a hole and elastically holding the operation shaft inserted into the shaft hole, the outer periphery of the one end side portion of the outer tube arranged in the shaft hole, and the case. An operating device characterized by being integrally provided with a sealing portion that is arranged between the inner circumferences of the end side portions and that seals between the two in a watertight manner. One end opening of the outer tube is in a state of communicating with the shaft hole.
The operating shaft is configured to be inserted into the shaft hole at least when the drainage port is in the open state.
A claim characterized in that an operation shaft seal portion is provided on the inner circumference of the holding portion so as to be watertightly contacted with respect to the outer circumference of the operation shaft inserted into the shaft hole over the entire circumference in the circumferential direction. Item 1. The operating device according to item 1. The operation shaft is configured to be always inserted into the shaft hole.
The operating device according to claim 2, wherein the operating shaft seal portion is always in close contact with the outer periphery of the operating shaft over the entire circumference in the circumferential direction. The operation shaft is configured to be always inserted into the shaft hole.
The operating device according to any one of claims 1 to 3, wherein the holding portion is configured to elastically hold the operating shaft at all times.

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