JP2017172210A - Drain plug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain plug device, which enables fitting workability to be improved and can prevent the device from being complicated and realize good drainage performance.SOLUTION: A drainage plug device 1 comprises: a drain outlet member 2; a piping 3 in which the drain outlet member 2 is fitted to an upper end side inner periphery; and an attachment member 4 having a holding part 41, a fitting part 42 and a connection part 43. A step part 34 is formed on the inner periphery of the piping 3. The fitting part 42 is disposed between the drain outlet member 2 and the step part 34. The drainage plug device has only one connection part 43 that is shorter in width than its length. An outer periphery of the drain outlet member 2 can be fitted to the upper end side inner periphery of the piping 3 in a state where the fitting part 42 is placed on the step part 34. An external diameter of the fitting part 41 can be shortened. The attachment member 4 can be passed through inside the drain outlet member 2 and attached to or removed from the drain outlet member 2 from above.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drain plug device provided at a drain outlet of a tank body.

  2. Description of the Related Art Conventionally, a drain plug device that includes a plug lid, a support shaft mechanism, a transmission member, a drain port member, piping, and an attachment member is known (see, for example, Patent Document 1).

  The plug lid is for opening and closing a drain of a tank body (for example, a bathtub, a basin, etc.). The support shaft mechanism includes a support shaft that supports the stopper lid in a state in which the stopper lid can be moved up and down. The transmission member is a member that moves the support shaft (for example, a wire or the like) by transmitting a displacement of a predetermined operation member (for example, an operation button or an operation handle) to the support shaft. It is arranged on the inner periphery of the tube member. The drain port member is for connecting the pipe that becomes the drainage flow path to the tank body. The drain port member is inserted into the drain port and attached to the pipe with the tank body sandwiched between the drain port and the pipe body. It is done. The attachment member includes a mounting portion that is attached to the inner periphery of the drain port member or the pipe, and a cylindrical holding portion that is located inside the mounting portion and holds the support shaft in a state in which the support shaft can be moved up and down on its own inner periphery. The drainage flows through the gap between the mounting portion and the holding portion.

  By the way, such a drain plug device is generally attached to a tank body by the following procedure. That is, after the drain port member is attached to the pipe (the pipe is connected to the tank body), the support shaft mechanism and the transmission member are pulled out from the inside of the pipe to the front side of the tank body, and the support shaft mechanism is used as the holding portion. By inserting the support shaft mechanism, the support shaft mechanism is attached to the attachment member (a tube member having a transmission member disposed on the inner periphery thereof is connected in advance to the support shaft mechanism). And while attaching an attachment member (attachment part) to a drain outlet member or piping, a drain plug apparatus is attached to a tank body by attaching a plug lid with respect to a support shaft. Here, due to the length of the transmission member, etc., the support shaft mechanism etc. can be pulled out only a little, and various operations such as inserting the support shaft mechanism into the holding part are performed near the drain port. Will be done.

  In addition, in the case where the attachment member is integrated with the support shaft mechanism, such as when the attachment member holding portion forms part of the support shaft mechanism, one end of the tube member or the transmission member from the inside of the pipe Is pulled out only slightly, and one end portion of the tube member pulled out in the vicinity of the drain outlet is connected to a portion corresponding to the support shaft mechanism in the integrated part. In addition, a portion corresponding to the attachment member (attachment portion) in the integrated component is attached to the drain port member or the pipe.

  However, pulling out the support shaft mechanism and transmission member from the pipes that are out of reach and performing various operations near the drain port requires a lot of labor and time, and places a great burden on the installation worker. There is a risk of being forced. Further, when the support shaft mechanism or the like is pulled out, the transmission member may be broken or bent, and the member may be damaged.

  Therefore, in order to improve attachment workability and prevent damage to the member, the attachment member that holds the support shaft mechanism (or integrated with the support shaft mechanism) is attached to the annular ring member, and then the ring member A technique has been proposed in which a support shaft mechanism is attached in advance to the pipe by screwing in advance to the inner periphery of the pipe, and then a drain port member is attached to the pipe. (See 2nd grade). According to this technology, when the drain port member is attached to the pipe, the support shaft mechanism is already held inside the drain port member or the like. Therefore, the troublesome work of pulling out the support shaft mechanism and the like from the inside of the pipe is not required, and it is possible to improve the mounting workability and prevent the member from being damaged when the support shaft mechanism and the like are pulled out.

JP 2008-223453 A JP 2013-253416 A

  However, in the above technique, since it is necessary to separately provide a ring member, there is a possibility that the apparatus becomes complicated and the manufacturing cost increases.

  Moreover, since the said technique is the structure which latches the attachment part of an attachment member to the inner periphery of a ring member, the inner surface of an attachment part will be in the state protruded to the central-axis side of the drain outlet member. Therefore, the water flow area in the attachment member is reduced, and the drainage performance may be deteriorated. Further, foreign matters such as dust are likely to adhere to the mounting portion, which may lead to a decrease in hygiene and cleaning properties.

  The present invention has been made in view of the above circumstances, and the purpose thereof is a drainage plug device that can improve mounting workability, prevent complication of the device, and realize a good drainage performance. Is to provide.

  In the following, each means suitable for solving the above-described object will be described in terms of items. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A plug lid for opening and closing the drain of the tank body;
A support shaft mechanism having a support shaft for supporting the stopper lid;
A cylindrical drainage port member inserted through the drainage port;
A cylindrical pipe to which the outer periphery of the drain port member is attached to the inner periphery on its upper end side;
An attachment member arranged at least partially on the inner periphery of the pipe,
The attachment member is
A holding portion arranged in a state in which the support shaft can move up and down on its inner periphery;
An annular mounting portion located on the outer peripheral side of the holding portion;
A drain plug device having a connecting portion for connecting the outer periphery of the holding portion and the inner periphery of the mounting portion,
The pipe has an annular step on its inner periphery,
When the attachment member is viewed in plan, the attachment member is provided with only one whose width is smaller than its own length,
The mounting portion is
While provided with a slit portion penetrating vertically in a portion other than the portion connected to the connecting portion,
Elastically deformable in a direction to increase or decrease the width of the slit portion, and
While its own outer diameter is always larger than the inner diameter of the lower surface of the drain port member, it can be reduced by reducing the width of the slit portion,
While the attachment member is always in an attachment state in which the attachment portion is positioned between the lower surface of the drain port member and the step portion and placed on the step portion, the width of the slit portion When the outer diameter of the mounting portion is reduced, the width of the slit portion can be reduced after removing the drain port member through the inside of the drain port member. When the outer diameter of the mounting portion is reduced, the mounting state can be configured to pass through the drain port member from above the drain port member,
The drain plug device is configured such that the attachment of the outer periphery of the drain port member to the inner periphery of the upper end side of the pipe can be performed in a state where the attachment portion is placed on the stepped portion.

  In addition, “when the attachment member is viewed in plan, only one member whose width is smaller than its own length is provided” is, for example, the outer peripheral surface of the holding portion. Including a configuration in which a plurality of connecting portions that connect only one region along the direction and only one region along the circumferential direction of the inner peripheral surface of the mounting portion are provided along the vertical direction (in this case) Each connecting portion has a width smaller than its length when the attachment member is viewed in plan). Moreover, when it consists of a some connection piece part divided | segmented along the width direction, and an attachment member is planarly viewed, it is located in the said width direction other end from what is located in the said width direction one end among connection piece parts A configuration in which only one connecting portion in which the width up to what is smaller than the length exists is also included.

  According to the said means 1, attachment of the drain port member with respect to piping can be performed in the state which mounted the attachment part of the attachment member in the step part of piping. Therefore, it is possible to attach the drain port member to the pipe while holding the support shaft mechanism by the attachment member, and when the drain plug device is attached, pull out the support shaft mechanism and the like from the pipe, It is possible to eliminate the troublesome and time-consuming work of performing various operations in the vicinity of. As a result, it is possible to improve the mounting workability, and more reliably prevent damage to members due to pulling out of the support shaft mechanism or the like.

  Furthermore, according to the means 1, since the attachment member itself is placed on the step portion of the pipe, it is not necessary to separately provide a member such as a ring member in order to realize the above-described effects. Therefore, the apparatus can be simplified and the increase in manufacturing cost can be effectively suppressed.

  Moreover, according to the said means 1, since an attaching part is mounted in a step part, protrusion of the inner surface of the attaching part toward the central-axis side of a drain outlet member can be suppressed. Thereby, the water flow area in the attachment member (area of the gap between the attachment portion and the holding portion) can be ensured to be larger, and good drainage performance can be realized. Moreover, adhesion of foreign substances such as dust to the mounting portion can be further suppressed, and hygiene and cleaning properties can be improved. Furthermore, the appearance is neat and the appearance quality can be improved.

  In addition, according to the above means 1, only one connecting portion is provided whose own width is smaller than its own length when the attachment member is viewed in plan. Therefore, a larger water flow area can be secured in the attachment member, and an excellent drainage capacity can be realized. Moreover, by using only one connecting portion, it is possible to suppress the attachment (hook) of foreign matters such as dust to the connecting portion. Therefore, the drainage channel is not easily blocked by the foreign matter, and the above-described excellent drainage capacity can be maintained over a long period of time. In addition, further improvement in hygiene and cleaning can be achieved.

  Further, according to the above means 1, the attachment member can be attached / removed from above the drain port member through the inside of the drain port member by elastically deforming the mounting portion so as to reduce the width of the slit portion. Has been. Therefore, the attachment member and the support shaft (support shaft mechanism) held by the attachment member can be easily attached or detached without removing the drain port member from the pipe. As a result, replacement at the time of breakage or the like can be easily performed, and the maintainability can be improved.

  Moreover, since there is only one connecting portion, elastic deformation of the mounting portion in the direction in which the width of the slit portion is changed can be caused relatively easily. Thereby, attachment / detachment of an attachment member etc. can be performed still more easily, and maintainability can be improved more.

  Mean 2. The drain plug apparatus according to means 1, wherein a portion of the step portion on which the mounting portion is placed has a shape that gradually increases toward the inner peripheral side.

  According to the above-mentioned means 2, the attachment portion is pressed against the step portion when a force directed downward (step portion side) is applied to the support shaft mechanism and thus the attachment member, such as when the stopper lid is stepped on. By doing so, it is possible to generate a force in the direction of expanding the diameter at the mounting portion. That is, it is a force in a direction that can cause an event such as increasing the locking margin of the mounting portion with respect to the stepped portion or pressing the outer peripheral surface of the mounting portion against piping or the like, and prevents the attachment member from falling Directional forces can be generated. Therefore, it can prevent very effectively that an attachment member remove | deviates from a step part and falls in piping.

  Means 3. The drain plug apparatus according to means 2, wherein a portion of the mounting portion that is placed on the stepped portion has a shape that gradually decreases toward the outer peripheral side.

  According to the above means 3, when a force directed downward (stepped portion side) is applied to the support shaft mechanism and thus the attachment member, a force in the direction of expanding the diameter at the mounting portion can be generated more reliably. it can. Thereby, it can prevent more reliably that an attachment member remove | deviates from a step part and falls in piping.

  Means 4. When the attachment member is moved upward, at least one of the part that contacts the lower surface of the drain port member in the mounting part and the part that contacts the mounting part among the lower surface of the drain port member is: 4. The drain plug device according to any one of means 1 to 3, wherein the drain plug device has a shape that gradually increases toward a central axis of the drain port member.

  According to the above means 4, when the attachment member is pulled upward to remove the attachment member or the like, the attachment portion comes into contact with the lower surface of the drain port member so that the width of the slit portion is reduced (attachment). The attachment portion can be elastically deformed (in the direction in which the diameter of the portion decreases). Therefore, the attachment member or the like can be removed more easily, and the maintainability can be further improved.

  Means 5. The drain plug device according to any one of means 1 to 4, wherein the slit portion is provided at a position between which the central axis of the holding portion is sandwiched between the slit portion and the connecting portion.

  According to the said means 5, the elastic deformation of the attachment part to the direction which changes the width | variety of a slit part can be produced more easily. As a result, attachment / detachment of the attachment member and the like can be performed more easily, and the maintainability can be further enhanced.

  Moreover, according to the said means 5, the length along the circumferential direction of the attachment part from the site | part (root side site | part) connected to the connection part in an attachment part to the site | part (front end side site | part) which forms a slit part. It can be prevented from becoming excessively large. Therefore, when a load is applied to the tip side portion of the attachment portion, an excessively large load can be prevented from being applied to the root side portion of the attachment portion. Thereby, the situation that an attachment member (attachment part) accidentally breaks at the time of attachment and removal, etc. can be prevented more reliably.

It is a partially broken front view of a drain plug device. It is a perspective view of an attachment member. It is a partially broken front view which shows one process of the attachment process of the drain plug device with respect to a bathtub. It is a partially broken front view for demonstrating the removal method of an attachment member. It is a partially broken front view for demonstrating the attachment method of an attachment member.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, the drain plug device 1 is attached to a bathtub 100 as a tank body, and includes a drain port member 2, a pipe 3, an attachment member 4, a support shaft mechanism 5, and a plug lid 6. It has. The bathtub 100 includes a bottom wall portion 101 that constitutes a bottom surface. The bottom wall portion 101 includes a cylindrical hanging portion 102 that extends in the vertical direction, and a hanging portion 102 that extends from the lower end portion of the hanging portion 102. An annular projecting portion 103 that protrudes toward the axial side is formed. A drainage port 104 that penetrates the bottom wall portion 101 is formed by the inner peripheral surface of the overhang portion 103.

  The drain port member 2 has a cylindrical shape, and is inserted into the drain port 104 in a state where the central axis of the drain port 104 and the central axis of the drain port member 104 substantially coincide with each other. Further, an annular flange 21 is formed on the upper end side of the drain port member 2 so as to protrude to the outer peripheral side, and a male screw part 22 is formed on the outer peripheral surface on the lower end side of the flange 21. ing.

  The pipe 3 includes a cylindrical main pipe portion 31 that extends in the vertical direction, and a branch pipe portion 32 that branches off from the main pipe portion 31. The main pipe part 31 is a part constituting a flow path for drainage from the bathtub 100, and the branch pipe part 32 is connected to a predetermined operation device (not shown) via a predetermined pipe body (not shown). It is a part to be done. A female thread portion 33 is formed on the inner periphery of the upper end portion of the main pipe portion 31.

  And after arrange | positioning the piping 3 to the back side of the bathtub 100, the external thread part 22 is screwed together with the internal thread part 33 through the drain port 104, and the drain port member 2 (river part 21) and the piping 3 (main pipe part 31) are used. The drain port member 2 and the pipe 3 are attached to the bathtub 100 by setting the overhanging portion 103 in between. An annular seal member 7 made of an elastically deformable material is provided between the upper end portion of the pipe 3 (main pipe portion 31) and the back surface of the bathtub 100 while being sandwiched between the two. Thereby, the water leakage prevention between the bathtub 100 and the piping 3 is achieved.

  Further, an annular step portion 34 is formed on the inner periphery of the main pipe portion 31 and below the female screw portion 33. Of the step portion 34, at least a portion on which a mounting portion 42 described later is placed (in this embodiment, the entire region of the step portion 34) has an inclined surface shape that gradually increases toward the inner peripheral side. In addition, the step part 34 may be provided continuously along the circumferential direction of the piping 3, and may be provided discontinuously.

  The attachment member 4 is at least partially disposed on the inner periphery of the pipe 3 and includes a holding portion 41, an attachment portion 42, and a connecting portion 43 as shown in FIG. The drainage from the bathtub 100 flows down through the gap between the holding part 41 and the attachment part 42.

  The holding part 41 has a cylindrical shape and holds the support shaft mechanism 5 on its inner circumference. In the present embodiment, the holding portion 41 includes a gap portion 44 that extends along the axial direction thereof. By elastically deforming the holding portion 41 so that the gap portion 44 is widened, the support shaft mechanism 5 can be inserted into the holding portion 41 from the rear end side opening. As a result, the arrangement work of the support shaft mechanism 5 with respect to the inner periphery of the holding portion 41 can be easily performed.

  In addition, at least a part of the holding portion 41 is located above the lowermost surface X of the portion of the bottom wall portion 101 that extends substantially horizontally (in this embodiment, the portion that starts to bend toward the hanging portion 102). Yes.

  The attachment portion 42 has a cylindrical shape with a relatively small thickness along the radial direction, and is located on the outer peripheral side of the holding portion 41. The lower surface of the attachment portion 42 is placed on the step portion 34, and is disposed between the lower surface of the drain port member 2 and the step portion 34. In addition, the attachment portion 42 includes a slit portion 45 extending in the axial direction and penetrating vertically in a portion other than the portion connected to the connecting portion 43. In the present embodiment, the slit portion 45 is provided at a position where the central axis of the holding portion 41 is sandwiched between the slit portion 45 and the connecting portion 43 (a position where the central axis of the holding portion 41 exists between the connecting portion 43). .

  In addition, the attachment portion 42 can be elastically deformed in the direction in which the width of the slit portion 45 is increased or decreased. In the present embodiment, the mounting portion 42 has an outer diameter that is always larger than the inner diameter of the lower surface of the drain port member 2, while at least the minimum inner diameter of the drain port member 2 by reducing the width of the slit portion 45. It can be reduced until it becomes smaller. It should be noted that the attachment portion 42 can be prevented from being lifted by the outer diameter of the mounting portion 42 being always larger than the inner diameter of the lower surface of the drain port member 2.

  Further, the placement portion 46, which is a portion of the attachment portion 42 that is placed on at least the step portion 34 (in the present embodiment, the entire lower surface of the attachment portion 42), gradually moves toward the outer peripheral side of the attachment portion 42. It has a sloped surface that becomes lower.

  Further, the contacted portion 47, which is a portion that comes into contact with the lower surface of the drain port member 2 when the attachment member 4 is moved upward on the upper surface of the mounting portion 42, has an inner peripheral side (drain port member) of the mounting portion 42. 2 in the direction of the central axis). A contact portion 24 (see FIG. 1 and the like) that contacts the upper surface of the attachment portion 42 when the attachment member 4 is moved upward on the lower surface of the drain port member 2 is provided inside the drain port member 2. It is good also as a shape which becomes high gradually toward the circumference side (the central-axis side of the drain port member 2).

  The connecting portion 43 extends in the radial direction of the attachment portion 42, connects the outer periphery of the holding portion 41 and the inner periphery of the attachment portion 42, and is a portion that supports the holding portion 41. The connecting portion 43 has a flat plate shape extending in the vertical direction, and when the attachment member 4 is viewed in plan, only one having its own width smaller than its own length is provided. In other words, when the connecting portion 43 is projected onto the projection plane orthogonal to the central axis of the holding portion 41, the length of the projection portion of the connecting portion 43 is smaller than its width, and the projected portion of the connecting portion 43. It is assumed that only one exists.

  Further, a protruding portion 43 </ b> A that protrudes outward is formed on the outer periphery of the lower portion of the connecting portion 43. The protruding portion 43A is disposed in the branching tube portion 32, whereby the connecting portion 43 is naturally disposed toward the branching tube portion 32 side. Further, the protruding portion 43A is sandwiched between the inner peripheral surfaces of the branch pipe portion 32 along the circumferential direction of the main pipe portion 31, and as a result, the relative rotation of the attachment member 4 with respect to the pipe 3 is restricted. It is in a state. By restricting the relative rotation of the attachment member 4 with respect to the pipe 3, it is possible to more reliably prevent a load from being applied to the transmission member 8 and the tube member 9 described later with the relative rotation.

  In addition, an accommodation groove 43B is provided in the lower portion of the connecting portion 43, and as shown in FIG. 1, the transmission member 8 and the tube member 9 are configured to be disposed in the accommodation groove 43B. The transmission member 8 is made of, for example, a wire or the like, and transmits a driving force generated by displacement of a predetermined operation member (for example, a push button or a rotary handle) (not shown) in the operation device to a support shaft 51 described below. The tube member 9 has a cylindrical shape and is disposed on the outer periphery of the transmission member 8. With the displacement of the operation member, the transmission member 8 reciprocates in the tube member 9. Further, the transmission member 8 and the tube member 9 are guided into the branch pipe portion 32 by being disposed in the accommodation groove portion 43B.

  The support shaft mechanism 5 includes a rod-shaped support shaft 51 having a stopper lid 6 attached to the tip, and a cylindrical portion 52 that holds the support shaft 51 in a vertically movable state. The support shaft 51 is configured to be in contact with the end portion of the transmission member 8. The support shaft 51 moves upward when the transmission member 8 moves forward with the displacement of the operation member and is lifted by the transmission member 8. On the other hand, the support shaft 51 moves downward as the transmission member 8 moves backward along with the displacement of the operation member.

  In the present embodiment, the support shaft mechanism 5 or the operation device is provided with a predetermined lock mechanism (not shown), and the support shaft at the rising end is operated each time the operation member is operated by the lock mechanism. The lock 51 and the downward movement of the support shaft 51 accompanying the unlocking are alternately performed.

  The plug lid 6 has a disk-shaped lid portion 61 made of resin or the like, and a cylindrical shape extending downward from the center of the back surface of the lid portion 61, and a mounting cylinder portion into which the tip end portion of the support shaft 51 is fitted. 62 and an annular packing portion 63 made of an elastically deformable material (for example, rubber, resin, etc.) fitted into the lower outer periphery of the mounting cylinder portion 62. In the present embodiment, since the mounting cylinder portion 62 is relatively long, when the stopper lid 6 is moved downward along with the downward movement of the support shaft 51, the entire outer peripheral portion of the packing portion 63 is the drain port member. 2 contacts the corner 23 at the upper end of the inner periphery, and as a result, the drainage port 104 is closed. On the other hand, when the stopper lid 6 moves upward with the upward movement of the support shaft 51, the packing portion 63 is separated from the drain port member 2 so that the drain port 104 is opened.

  Next, a method for attaching the drain plug device 1 to the bathtub 100 will be described.

  First, the pipe 3 is arranged on the back side of the bathtub 100 (the overhang portion 103) in a state where the main pipe portion 31 is coaxial with the drain port 104, and the upper end surface of the pipe 3 and the bathtub 100 (the overhang portion 103) are arranged. It is set as the state which has arrange | positioned the sealing member 7 between. At this time, the mounting portion 42 is placed on the step portion 34 of the pipe 3, and the attachment member 4 is arranged in advance on the inner periphery of the pipe 3, and the protruding portion 43 </ b> A is arranged in the branch pipe portion 32. Further, the transmission member 8 and the tube member 9 are also arranged in the branch pipe portion 32. The support shaft mechanism 5 is held in advance by the holding portion 41 of the attachment member 4.

  Next, as shown in FIG. 3, the drain port member 2 is inserted into the drain port 104, and the drain port member 2 is rotated to screw the male screw portion 22 into the female screw portion 33. As a result, the overhanging portion 103 and the seal member 7 are sandwiched between the flange portion 21 and the pipe 3, and the pipe 3 is attached to the drain port member 2 (the pipe 3 is connected to the bathtub 100).

  Finally, the stopper cover 6 is attached to the tip of the support shaft 51, whereby the disposition of the drain plug device 1 with respect to the bathtub 100 is completed.

  In addition, in the drain plug device 1 attached to the bathtub 100, the attachment member 4 is always in a state where the attachment portion 42 is positioned between the lower surface of the drain port member 2 and the step portion 34 and placed on the step portion 34. It is in a certain mounting state. However, in the present embodiment, the attachment member 4 can be removed to the upper side of the drainage port member 2 through the inside of the drainage port member 2, and after the removal, the attachment member 4 is removed from above the drainage port member 2. The mounting state can be achieved through the inside of the drain port member 2. Then, next, the removal method of the attachment member 4 and the attachment method (method which makes the attachment member 4 the said attachment state) are demonstrated.

  First, a method for removing the attachment member 4 will be described. The attachment member 4 can be removed by pulling the attachment member 4 upward from above the drain port member 2 (for example, pulling the holding portion 41 upward). Specifically, as shown in FIG. 4, by applying an upward force to the attachment member 4, the contacted portion 47 gradually slides while sliding on the lower surface (contact portion 24) of the drain port member 2. Move upwards. As a result, the mounting portion 42 gradually elastically deforms in the direction in which the width of the slit portion 45 decreases, and as a result, the center axis of the attachment member 4 is slightly inclined with respect to the central axis of the drain port member 2, etc. Part of 42 (for example, a part on the slit portion 45 side) enters the inside of the drain port member 2. In this state, by applying an upward force to the attachment member 4, the attachment portion 42 is easily elastically deformed, and its outer diameter becomes smaller than the inner diameter of the drain port member 2. It enters the inside of the drain port member 2. In this state, by applying a further upward force to the attachment member 4, the attachment member 4 passes through the inside of the drain port member 2 and the attachment member 4 is removed.

  Next, a method for attaching the attachment member 4 will be described. The attachment member 4 can be attached by pushing the attachment member 4 into the pipe 3 from above the drain port member 2. Specifically, as shown in FIG. 5, the attachment member 4 is inserted inside the drain port member 2 in a state in which the attachment portion 42 is elastically deformed to reduce its outer diameter. Then, when the attachment member 4 is pushed downward and the attachment portion 42 reaches a hollow portion located between the lower surface of the drain port member 2 and the step portion 34, the elastic deformation of the attachment portion 42 is released. As a result, the attachment portion 42 is placed on the step portion 34 and is disposed between the step portion 34 and the lower surface of the drain port member 2, and the attachment member 4 is in the attachment state.

  As described above in detail, according to this embodiment, the drain port member 2 can be attached to the pipe 3 in a state where the attachment portion 42 is placed on the step portion 34. Accordingly, the drain shaft member 2 can be attached to the pipe 3 while holding the support shaft mechanism 5 by the attachment member 4, and the support shaft mechanism 5 and the transmission can be transmitted from the inside of the pipe 3 when the drain plug device 1 is attached. It is possible to eliminate the troublesome and time-consuming work of performing various operations in the vicinity of the drain port 104 after pulling out the member 8 and the like. As a result, it is possible to improve the mounting workability and more reliably prevent the members from being damaged when the support shaft mechanism 5 and the transmission member 8 are pulled out.

  Furthermore, since the attachment member 4 itself is configured to be placed on the step portion 34, there is no need to separately provide a member such as a ring member. Accordingly, it is possible to simplify the drain plug device 1 and effectively suppress an increase in manufacturing cost.

  Moreover, according to this embodiment, the protrusion of the inner surface of the attachment part 42 toward the central axis side of the drain port member 2 can be suppressed. Thereby, the water flow area (the area of the gap between the attachment part 42 and the holding part 41) in the attachment member 4 can be ensured larger, and good drainage performance can be realized. Moreover, adhesion of foreign substances such as dust to the mounting portion 42 can be further suppressed, and hygiene and cleaning properties can be improved. Furthermore, the appearance is neat and the appearance quality can be improved.

  In addition, when the attachment member 4 is viewed in plan, only one connecting portion 43 is provided whose own width is smaller than its own length. Therefore, a larger water flow area can be secured in the attachment member 4, and an excellent drainage capacity can be realized. Further, by using only one connecting portion 43, it is possible to suppress the attachment (hook) of foreign matters such as dust to the connecting portion 43. Therefore, the drainage channel is not easily blocked by the foreign matter, and the above-described excellent drainage capacity can be maintained over a long period of time. In addition, further improvement in hygiene and cleaning can be achieved.

  Further, the attachment member 4 can be attached / removed from above the drain port member 2 through the inside of the drain port member 2 by elastically deforming the mounting portion 42 so as to reduce the width of the slit portion 45. Yes. Therefore, the attachment member 4 and the support shaft mechanism 5 held by the attachment member 4 can be easily attached or detached without removing the drain port member 2 from the pipe 3. As a result, replacement at the time of breakage or the like can be easily performed, and the maintainability can be improved.

  Further, since there is only one connecting portion 43, the elastic deformation of the attachment portion 42 in the direction in which the width of the slit portion 45 is changed can be caused relatively easily. Thereby, attachment / detachment of the attachment member 4 etc. can be performed more easily, and maintenance property can be improved more.

  In addition, a portion of the step portion 34 on which the mounting portion 42 is placed has a shape that gradually increases toward the inner peripheral side. Therefore, when a force directed downward (stepped portion side) is applied to the attachment member 4, the mounting portion 42 is pressed against the stepped portion 34, thereby generating a force in the direction of expanding the diameter at the mounting portion 42. Can be made. That is, it is a force in a direction that can cause an event such as increasing the locking margin of the mounting portion 42 with respect to the stepped portion 34 or pressing the outer peripheral surface of the mounting portion 42 against the pipe 3 or the like. The force of the direction which prevents the fall of can be produced. Therefore, it can prevent very effectively that the attachment member 4 remove | deviates from the step part 34, and falls in the piping 3. FIG.

  Further, the placement portion 46 is shaped to gradually lower toward the outer peripheral side of the attachment portion 42. Therefore, when a force directed downward (on the side of the step portion 34) is applied to the attachment member 4, a force in the direction of expanding the diameter at the attachment portion 42 can be generated more reliably. Thereby, it can prevent much more reliably that the attachment member 4 remove | deviates from the step part 34, and falls in the piping 3. FIG.

  The contacted portion 47 has an inclined surface shape that gradually increases toward the inner peripheral side of the attachment portion 42 (the central axis side of the drain port member 2). Therefore, the attachment portion 42 can be easily elastically deformed when the attachment member 4 or the like is removed. Therefore, the removal work can be performed more easily, and the maintainability can be further improved.

  In addition, the slit portion 45 is provided at a position sandwiching the central axis of the holding portion 41 with the connecting portion 43. Thereby, the elastic deformation of the attachment part 42 to the direction which changes the width | variety of the slit part 45 can be produced more easily. As a result, attachment / removal of the attachment member 4 and the like can be performed more easily, and the maintainability can be further enhanced.

  Furthermore, the length along the circumferential direction of the attachment part 42 from the part (root side part) connected to the connection part 43 in the attachment part 42 to the part (tip side part) forming the slit part 45 is excessively large. Can be prevented. Therefore, when a load is applied to the distal end side portion of the attachment portion 42, an excessively large load can be prevented from being applied to the root side portion of the attachment portion 42. Thereby, the situation that the attachment member 4 (attachment part 42) accidentally breaks at the time of attachment and removal etc. can be prevented more reliably.

  In addition, in the present embodiment, at least a part of the holding portion 41 is located above the lowest surface X of the bottom wall portion 101. Therefore, it becomes easy to pull the holding portion 41 upward, and the attachment member 4 and the like can be removed more easily.

  Further, when the drainage port 104 is closed, the entire outer periphery of the packing portion 63 contacts the corner portion 23 of the drainage port member 2. Therefore, the diameter (seal diameter) of the contact portion of the packing portion 63 with respect to the drain port member 2 can be made extremely small, and the force required to be applied to the operation member when the drain port 104 is opened is effective. Can be made smaller. As a result, the operability can be improved, and the load applied to the transmission member 8 and the operation member during operation can be reduced more reliably. Further, since the seal diameter of the packing portion 63 can be reduced, the entire circumference of the packing portion 63 can be more reliably brought into contact with the corner portion 23 when the drain port 104 is closed, and the packing portion 63 is manufactured. The material cost at the time can be reduced.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the support shaft mechanism 5 is held by the holding portion 41. However, the support shaft 51 is provided inside the holding portion 41, and the support shaft 51 and the holding portion 41 constitute the support shaft mechanism. It is good as well. That is, the support shaft mechanism 5 and the attachment member 4 may have a part of the constituent parts in common.

  (B) In the said embodiment, although the bathtub 100 is illustrated as a tank body, the tank body which can apply the technical idea of this invention is not limited to a bathtub. Therefore, for example, the technical idea of the present invention may be applied to a wash basin or a kitchen sink.

  (C) In the above embodiment, the outer periphery of the drain port member 2 is attached to the inner periphery of the upper end side of the pipe 3 by screwing the male screw portion 22 to the female screw portion 33. It is not limited. Therefore, for example, by locking the locking portion provided on the outer periphery of the drain port member 2 to the locked portion provided on the inner periphery on the upper end side of the pipe 3, The outer periphery of the drain port member 2 may be attached.

  (D) In the above-described embodiment, the drain lid 104 is closed when the stopper lid 6 (packing portion 63) contacts the drain port member 2, but the stopper lid 6 (packing portion 63) You may comprise so that the drain outlet 104 may be closed by contacting the bathtub 100. FIG.

  DESCRIPTION OF SYMBOLS 1 ... Drain plug apparatus, 2 ... Drain port member, 3 ... Piping, 4 ... Attachment member, 6 ... Plug lid, 34 ... Step part, 41 ... Holding part, 42 ... Mounting part, 43 ... Connection part, 45 ... Slit part , 46 ... Placed part, 47 ... Contacted part, 100 ... Bathtub (tank), 104 ... Drainage port.

Claims (5)

A plug lid for opening and closing the drain of the tank body;
A support shaft mechanism having a support shaft for supporting the stopper lid;
A cylindrical drainage port member inserted through the drainage port;
A cylindrical pipe to which the outer periphery of the drain port member is attached to the inner periphery on its upper end side;
An attachment member arranged at least partially on the inner periphery of the pipe,
The attachment member is
A holding portion arranged in a state in which the support shaft can move up and down on its inner periphery;
An annular mounting portion located on the outer peripheral side of the holding portion;
A drain plug device having a connecting portion for connecting the outer periphery of the holding portion and the inner periphery of the mounting portion,
The pipe has an annular step on its inner periphery,
When the attachment member is viewed in plan, the attachment member is provided with only one whose width is smaller than its own length,
The mounting portion is
While provided with a slit portion penetrating vertically in a portion other than the portion connected to the connecting portion,
Elastically deformable in a direction to increase or decrease the width of the slit portion, and
While its own outer diameter is always larger than the inner diameter of the lower surface of the drain port member, it can be reduced by reducing the width of the slit portion,
While the attachment member is always in an attachment state in which the attachment portion is positioned between the lower surface of the drain port member and the step portion and placed on the step portion, the width of the slit portion When the outer diameter of the mounting portion is reduced, the width of the slit portion can be reduced after removing the drain port member through the inside of the drain port member. When the outer diameter of the mounting portion is reduced, the mounting state can be configured to pass through the drain port member from above the drain port member,
The drain plug device is configured such that the attachment of the outer periphery of the drain port member to the inner periphery of the upper end side of the pipe can be performed in a state where the attachment portion is placed on the stepped portion.   The drain plug device according to claim 1, wherein a portion of the step portion on which the mounting portion is placed has a shape that gradually increases toward an inner peripheral side.   The drain plug device according to claim 2, wherein a portion of the mounting portion that is placed on the stepped portion has a shape that gradually decreases toward the outer peripheral side.   When the attachment member is moved upward, at least one of the part that contacts the lower surface of the drain port member in the mounting part and the part that contacts the mounting part among the lower surface of the drain port member is: The drain plug device according to any one of claims 1 to 3, wherein the drain port device has a shape that gradually increases toward a central axis of the drain port member.   The drain plug device according to any one of claims 1 to 4, wherein the slit portion is provided at a position between which the central axis of the holding portion is sandwiched between the slit portion and the connecting portion.

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