JP2008280809A - Bathtub pan and drainage device for bathtub - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly drain a large quantity of washing water which is caused when the inside of a bathtub pan is washed. <P>SOLUTION: The bathtub pan comprises a bathtub pan drain receiving port 12 connected with a bathtub pan drain port 5, a bathtub draining cylindrical part 13 disposed in the receiving port 12 to connect a cylinder inside 13d with a bathtub drain port 3, a bathtub pan drain passage 16 extended from the receiving port 12 to a collective drain passage 15, and a bathtub drain passage 17 extended from the cylinder inside 13d to the collective drain passage 15. The draining cylindrical part 13 includes a check valve 20 which is generally closed to inhibit the passage of water from the cylinder inside 13d of the cylindrical part 13 to the receiving port 12, and allows the passage of water from the receiving port 12 to the cylinder inside 13d of the cylindrical part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to an improvement of a bathtub pan and a drainage device for a bathtub for discharging the drainage of the bathtub pan and the drainage of the bathtub.

Conventionally, in the bathtub pan and the drainage device for the bathtub, the inside of the bathtub pan drainage outlet and the bathtub pan drainage outlet connected to the bathtub pan drainage outlet and the inside of the cylinder are connected to the bathtub drainage outlet. Bathtub drain tube, bathtub pan drainage channel extending from the bathtub pan drainage receiving port to the collective drainage channel, and bathtub drainage tube unit extending from the inside of the tube to the collective drainage channel Some have a drainage channel. (Patent Document 1)
JP 2006-63765 A

  The conventional bathtub pan and the drainage device for the bathtub can complete the drainage of the bathtub quickly by making the bathtub drainage channel considerably larger when comparing the cross section area of the bathtub drainage channel and the bathtub pan drainage channel. It is like that.

By the way, in bathroom cleaning, there is an aspect in which the inside of the bathtub pan is washed from the washing station side, for example, by removing a detachable apron provided between the bathtub and the washing pan.
However, since the cross-sectional area of the bathtub pan drainage channel is reduced, the drainage capacity is reduced, and if a large amount of washing water is used when cleaning the inside of the bathtub pan, the drainage capacity cannot catch up, and May cause irritation.
The object of the present invention is to provide a bathtub pan and a drainage device for a bathtub that can solve the above problems.

  In order to ensure drainage even if the drainage of the bathtub pan is increased, the means adopted by the invention of claim 1 is a bathtub pan drainage receiving portion for receiving the bathtub pan drainage and an inner side of the bathtub pan drainage receiving portion. The tub drain tube that receives the tub drainage, the tub pan drainage channel that extends from the tub pan drainage outlet to the collective drainage channel, and the tub drain tube that extends from the inside of the cylinder In the drainage device provided with the drainage channel for the bathtub leading to the collective drainage channel, the valve is normally closed to prevent water flow from the inner side of the drainage cylinder part for the bathtub to the drainage outlet part for the bathtub pan, A bathtub pan and a drainage device for bathtubs, characterized in that a check valve that allows water to flow from the bathtub pan drainage port to the inside of the bathtub drainage cylinder is attached to the bathtub drainage cylinder. is there.

  In order to protect the check valve from dust in the bathtub pan drainage, the means adopted by the invention of claim 2 is such that the check valve is detachably attached to the bathtub drain cylinder. The bathtub pan and bathtub drainage device according to claim 1, wherein a dust trap is provided at a portion facing the inside of the bathtub pan drainage receiving portion upstream of the valve body.

  In order to protect the check valve from dust in the tub pan drainage, the means adopted by the invention according to claim 3 is configured such that the check valve is formed on both sides where the opening portion is opened inside and the edge portion is joined. An insertion space is formed between the frame parts, and a valve seat forming frame body in which a valve seat is formed on the frame part located inside the tube of the drainage pipe part for bathtubs, and the insertion space of the valve seat forming frame body can be freely inserted and removed. A dust catcher that is inserted into the valve seat forming frame and exposed to the openings of the frame portions on both sides of the valve seat forming frame body, the pin receiving portions on both sides exposed to the inside of the tube of the drainage tube portion for the bathtub, and the bathtub pan A detachable main body having a handle protruding to the outside of the drainage receiving port, and a valve body positioned on the inner side of the bathtub drainage cylinder and swingably attached to the pin receiving parts on both sides, When the main body for detachment is detachably locked to the drain cylinder for the bathtub using a handle, the bathtub A drainage device of a bath pan and tub of claim 1, wherein adhering the valve seat forming frame portion to the vent wearing opening formed in the drainage tube portion.

  In the bathtub pan and the bathtub drainage device according to the first aspect of the present invention, the bathtub drainage discharged from the bathtub passes through the inside of the bathtub drainage cylinder from the bathtub drainage port and is guided by the bathtub drainage channel. As a result, it reaches the collective drainage channel and is discharged to the outside. During this time, the check valve remains closed, and the bathtub drainage does not flow out to the bathtub pan drainage port. When a large amount of bathtub pan drainage occurs due to washing of the bathtub pan, etc., the water level inside the bathtub pan drainage receptacle rises due to the bathtub pan drainage that reaches the bathtub pan drainage receptacle. The check valve opens due to the difference in water level between the inside and outside of the cylinder, and the tub pan drainage is diverted, and part of it passes through the open check valve and flows into the inside of the bathtub drain cylinder. Then, it is led by the bathtub drainage channel to the collective drainage channel, and the remaining part of the bathtub pan drainage passes through the inside of the bathtub pan drainage outlet and is guided by the bathtub pan drainage channel to the collective drainage channel. , Both merge and are discharged to the outside. Moreover, the bathtub pan and the drainage device for a bathtub according to the present invention are provided after the bathtub pan drainage is divided and guided by the two drainage channels even if the bathtub pan drainage amount is increased by providing a check valve. The drainage capacity can be increased by merging in the drainage channel.

  The bathtub pan and the drainage device for a bathtub according to the present invention according to claim 2 and 3 captures garbage from the bathtub pan drainage passing through the garbage catching part with the opening of the check valve, and the valve seat and the valve. Smooth opening and closing of the check valve can be maintained without causing dust between the body. In addition, since the check valve can be attached to and detached from the bathtub drain tube section, the check valve is removed and moved to a place where maintenance can be easily inspected, and the dust attached to the dust catching section is removed. Easy maintenance and inspection.

  According to the third aspect of the present invention, when the bathtub pan and the drainage device for a bathtub are attached to the drainage cylinder part for the bathtub, the valve seat is formed in the valve mounting opening of the drainage cylinder part for the bathtub. Since the frame is brought into close contact, it is possible to reliably prevent water flow while the valve is closed. Furthermore, since the check valve can be attached / detached using the handle, the attaching / detaching operation is facilitated, and even if the check valve is disposed at a recessed position, it can be easily attached / detached.

  A bathtub pan and a drainage device for a bathtub (hereinafter referred to as “the drainage device of the present invention”) according to the present invention will be described based on an embodiment shown in the drawings.

(First embodiment)
1 to 11 show a first embodiment of a drainage device 1 according to the present invention. FIG. 1 is a longitudinal sectional view showing the whole of the present embodiment, and FIG. 3 is an enlarged longitudinal sectional view, FIG. 3 is a longitudinal sectional view showing a state in which the check valve 20 is attached to the valve opening for opening 55 of the bathtub drain cylinder 13, and FIG. FIG. 5 is an enlarged cross-sectional view taken along line V-V in FIG. 4, and FIG. 6 shows the relationship between the check valve 20 and the bathtub drain cylinder 13. Fig. (A) is a perspective view showing a state in which the check valve 20 is attached to the bathtub drain tube portion 13, and Fig. (B) is an exploded check valve 20, the bathtub drain tube portion 13 and the joint pipe. FIG. 7 shows a bathtub drainage cylinder, FIG. 7 (A) is a front view, FIG. 7 (B) is a plan view, and FIG. FIG. 8D is a rear view, FIG. E is a left side view, FIG. F is a left sectional view taken along line ff in FIG. A, and FIG. FIG. 1A is a longitudinal sectional side view showing the detachable main body 22 and the valve seat forming frame 21 separately, and FIG. And FIG. 9C is a partially sectional side view showing the assembled check valve 20, and FIG. 9 is a check valve 20. FIG. 2A is a front view, FIG. 2B is a plan view, FIG. 2C is a bottom view, FIG. 2D is a rear view, and FIG. Is a left side view, FIG. (F) is a left sectional view taken along the line ff of FIG. (A), and FIG. 10 shows the main part 22 for attachment / detachment of the check valve 20. Is a front view, Figure (B) is a plane (C) is a bottom view, FIG. (D) is a rear view, FIG. (E) is a left side view, FIG. (F) is a left sectional view taken along line ff in FIG. The valve body 25 of the check valve 20 is shown, wherein FIG. (A) is a front view, FIG. (B) is a plan view, FIG. (C) is a bottom view, FIG. (D) is a rear view, and FIG. ) Is a left side view, and FIG. (F) is a left side sectional view taken along line ff in FIG.

  As shown in FIG. 1, the drainage device 1 of the present invention is disposed below the bathtub pan 4 and the wash basin pan 6 that have received the bathtub 2, and the drain port 3 of the bathtub 2, the drain pan 5 of the bathtub pan 4, and the wash pan 6 The drainage port 7 is constructed by joining corresponding portions of the main body casing 11 and joining the collective drainage pipe 9 to the downstream side of the collective drainage channel 15 of the main casing 11. The main body casing 11 includes a bathtub pan drain receiving port 12 that communicates with the bathtub pan drain port 5, and a bathtub pan drain channel 16 extending from the bathtub pan drain receiving port 12 to the collective drain channel 15 (FIG. 4). 5), a bathtub drain 17 extending from the opening 28 formed in the partition wall 27 forming the bottom of the bathtub pan drain receptacle 12, and leading to the collective drain 15, and the washing pan drain 7 And a washing ground pan drainage passage 19 extending from the washing ground pan drainage receptacle 18 to the collective drainage channel 15 are formed.

  As shown in FIG. 2, the main body casing 11 has a bathtub drain cylinder 13 disposed on the inner side 12 c of the bathtub pan drain receptacle 12, and the upper opening 13 a of the bathtub drain cylinder 13 is connected to the bathtub drain outlet 3. The lower opening 13 b of the bathtub drain tube 13 is communicated with the opening 28 of the partition wall 27 through the joint pipe 14. The joining pipe 14 is made of, for example, a bellows-like rubber pipe that can be easily expanded and contracted (see FIG. 6). The upper end opening 14a is water-tightly fitted to the bottom of the bathtub drain tube 13 and the lower end opening 14b. Is connected to the opening 28 of the partition wall 27 in a watertight manner so that the tube inner side 13d of the bathtub drain tube 13 and the bathtub drain channel 17 are reliably communicated with each other. In addition, the joining pipe 14 is compressed and arrange | positioned when joining the opening parts 14a and 14b of the upper and lower ends. The drainage channel 17 for the bathtub is bent upward at the downstream side to the collective drainage channel 15 so as to store water-sealed water in the water channel, and the sealing surface W1 on the cylinder inner side 13d of the drainage cylinder unit 13 for the bathtub. Is formed.

  As shown in FIG. 2, the bathtub drain tube 13 includes a flange 13 c formed on the upper end side thereof, and a flange 30 a of the bathtub-side drain member 30 screwed into the upper opening 13 a. The opening periphery of 3 is pinched watertight. The bathtub-side drain port member 30 has a built-in drain plug 31, and an operation button (not shown) provided on the edge of the bathtub is connected to a drain plug by an operation cable (not shown). The drain plug 31 is opened and closed.

  As shown in FIG. 2, the bathtub pan drain receiving part 12 of the main body casing 11 is composed of a flange part 12b formed on the upper end side thereof and a flange part 32a of a connector 32 screwed to the upper opening part 12a. The opening peripheral edge of the pan drain port 4 is sandwiched in a watertight manner. The bathtub pan drainage receiving port 12 communicates with the partition wall 27 forming the bottom thereof, with the upstream side of the bathtub pan drainage channel 16 (see FIGS. 4 and 5) being open 27a (see FIG. 4). . The bathtub pan drainage channel 16 is bent so that the downstream side leading to the collective drainage channel 15 is bent upward so as to store the water-sealed water in the water channel. W2 is formed. The sealing surface W2 has the same or substantially the same height position (in this example, the same height position) as the sealing surface W1 of the drain tube section 13 for bathtubs.

  As shown in FIG. 1, the washing pan drain outlet 18 of the main casing 11 includes an opening periphery of the upper opening 18a of the main casing 11 and a flange 32a of the joint 33 screwed to the upper opening 18a. The opening peripheral edge of the washing basin side drain outlet 7 is sandwiched in a watertight manner. The washing pan drain outlet 18 is provided with a water sealing cylinder 34 inside. A detachable hair catcher 35 is disposed in the washing area side bread drain 7 and is covered with a detachable eye plate lid 36. The washing ground pan drainage channel 19 extending from the washing ground pan drainage receiving port 18 is bent upward at the downstream side to the collective drainage channel 15 so as to store the water seal water in the water channel. The sealing surface W3 is formed inside the drainage outlet 18 for water.

  As shown in FIG. 2, the improvement of the drainage device 1 according to the present invention is that a check valve 20 that is normally closed is provided in the bathtub drain cylinder 13 so that the bathtub from the cylinder inner side 13 d of the bathtub drain cylinder 13. While preventing water flow to the pan drain receiving port 12, water flow from the bath pan drain receiving port 12 to the tube inner side 13 d of the bath drain tube portion 13 may be possible. The drainage device 1 of the present invention allows the bathtub water discharged from the bathtub 2 by opening the bathtub drain plug 31 to pass through the tube inner side 13d of the drain tube section 13 for bathtub from the bathtub drain port 3, and then drains the bathtub. It guide | induces by 17 and is discharged | emitted from the collective drainage channel 15 outside. During this time, the check valve 20 maintains the valve closed state, and the bathtub drainage does not flow out to the inner side 12 c of the bathtub pan drainage receiving port 12.

  As shown in FIG. 2, the drainage device 1 of the present invention, when washing the bathtub pan 4, etc. produces a larger amount of bathtub pan drainage than the drainage capacity of the bathtub pan drainage channel 16 (see FIGS. 4 and 5). The water level of the inner side 12c of the bathtub pan drain receiving port 12 rises due to the bathtub pan drainage leading to the bathtub pan drain receiving port 12, and the tube inner side 13d of the bathtub drain tube 13 and the outer tube side (tub pan drain receiving port The valve body 25 of the check valve 20 is opened (a state indicated by a two-dot chain line in the figure) due to the water level difference on the inner side 12c) of the portion 12. The drainage device 1 of the present invention in which the check valve 20 is opened diverts the bathtub pan drainage, and a part of the drainage passes through the check valve 20 being opened and flows into the cylinder inner side 13d of the bathtub drain cylinder 13. Then, the drainage capacity is guided by the bathtub drainage channel 17 which is larger than the bathtub pan drainage channel 16 and reaches the collective drainage channel 15, and the diverted remaining portion passes through the inner side 12 c of the bathtub pan drainage receiving port 12, It is guided by the drainage channel 16 (see FIGS. 4 and 5) and reaches the collective drainage channel 15, where both merge and are discharged to the outside. As described above, the drainage device 1 of the present invention provides the check valve 20 so that even if the amount of drainage of the bathtub pan increases, the bathtub pan drainage is diverted and guided by the two drainage channels 16 and 17 to the collective drainage channel. By merging at 15, the drainage capacity can be increased.

  As shown in FIG. 2, the check valve 20 is detachably attached to the side wall of the bathtub drain cylinder 13 (see FIG. 3), and the bathtub pan on the upstream side with respect to the valve body 25. A dust catching portion 23 is provided at a portion facing the waste water receiving port 12. The check valve 20 captures the dust mixed in the bathtub pan drainage that passes when the check valve 20 is opened by the dust capturing unit 23, and does not bring the dust between the valve seat 21 a and the valve body 25. Opening and closing is maintained. In addition, since the check valve 20 is detachable from the bathtub drain tube section 13, the check valve 20 is removed and moved to a place where it can be easily inspected and removed, and dust attached to the dust catching section 23 is removed. Easy maintenance and inspection.

  The check valve 20 assembles the divided valve seat forming frame body 21, the detachable main body 22 and the valve body 25 in order to improve the water tightness at the time of attachment and the operability at the time of attachment and detachment. It is configured. That is, as shown in FIG. 8, the check valve 20 has an insertion space 45 formed between the frame portions 41 and 42 on both sides where the opening portions 41 a and 42 a are opened and the edge portions are joined to each other. A valve seat forming frame body 21 in which a valve seat 21a is formed on a frame portion 42 located on the cylinder inner side 13d of the drainage cylinder portion 13 and an insertion space 45 of the valve seat forming frame body 21 are detachably inserted to form a valve seat. The dust catching part 23 exposed to the openings 41a, 42a of the frame parts 421, 42 on both sides of the frame body 21 and capable of passing water, and the pin receiving parts 49 on both sides exposed to the cylinder inner side 13d of the drainage cylinder part 13 for bathtubs. 49, and the detachable main body 22 having a handle 24 projecting to the outside of the bathtub pan drainage receptacle 12, and the inner side 13d of the bathtub drainage cylinder 13 and the pin receptacles 49, 49 on both sides. And a valve body 25 attached so as to be swingable. When the detachable main body portion 22 is detachably locked to the drainage cylinder portion 13 using a handle, the valve seat forming frame is inserted into the valve-mounting opening 55 (see FIG. 3) formed in the drainage cylinder portion 13 for the bathtub. The part 21 is in close contact.

  As shown in FIG. 9, the valve seat forming frame body 21 has one side (front side) frame portion 41 in which a water passage opening 41 a is formed and the other side (rear side) in which a water passage opening portion 42 a is formed. ) Is joined by joint portions 43, 43 on both the left and right sides and a joint portion 44 on the bottom side, and an insertion insertion space 45 having an upper opening is formed between the frame portions 41, 42 on both sides. The valve seat forming frame 21 is provided with an opening 44a near the center of the bottom-side joint 44, and with openings 42b and 42b near the upper left and right of the rear frame 42. The valve seat forming frame body 21 projects the valve seat 21a to the annular ridges at the front four peripheral edges of the opening 42a of the rear frame portion 42, and is closely attached to the rear four peripheral edges of the rear frame portion 42. The annular ridge 42c is projected. The valve seat forming frame body 21 is formed from a synthetic resin material having a hardness that is easily deformable when inserting the detachable main body 22 described later into the insertion insertion space 45.

  As shown in FIG. 10, the detachable main body 22 is formed of a synthetic resin material and protrudes toward the center of the lower end of the insertion piece 46 and the insertion piece 46 formed with the dust catching portion 23 opened in a lattice shape or the like. From the lower locking piece 47 provided, the upper engaging portion 48 connected to the upper end of the insertion piece portion 46, the handle 24 extending from the upper engagement portion 48, and from the left and right upper side of the rear side of the insertion piece portion 46. Projecting pin receiving portions 49 and 49 are provided.

  As shown in FIG. 11, the valve body 25 is formed from a synthetic resin material, and includes a valve plate portion 51 and pins 52, 52 protruding from the left and right ends of the valve plate portion 51. The weight is adjusted in order to ensure smooth opening and closing while increasing the rigidity by cutting out into a lattice shape.

  As shown in FIG. 8, the check valve 20 is assembled by inserting the insertion piece 46 of the detachable main body 22 into the insertion insertion space 45 of the valve seat forming frame 21 (see FIGS. 8A and 8B). The pin receiving portions 49, 49 and the lower locking piece 47 of the detachable main body 22 are protruded, and the pins 52, 52 of the valve body 25 are supported by the pin receiving portions 49, 49 so that the valve body 25 can swing freely. Complete by hanging.

  The bathtub drain cylinder 13 is formed of a synthetic resin material and has a valve opening 55 as shown in FIG. 7 so that the check valve 20 can be attached and detached reliably and easily. The valve-mounting opening 55 abuts the annular ridge 42c (see FIGS. 8 and 9) of the valve seat forming frame body 21 of the check valve 20 in a watertight manner on an annular seal surface 55a formed on the front four peripheral edges. As shown in FIG. 2, the frame pieces 55b, 55b, and 55c are projected from the left and right and lower outer edges of the seal surface 55a to the front, to the locking slit 55d provided in the lower frame piece 55c. The lower locking piece 47 (see FIGS. 8 and 10) of the main part 22 for attachment / detachment of the check valve 20 can be locked (see FIG. 2). The valve-mounting opening 55 is configured such that guide pieces 55f and 55f project from the front upper ends of the left and right frame pieces 55b and 55b to guide the check valve 20 to a predetermined mounting position. The bathtub drainage cylinder 13 has a locking portion 56 formed above the valve mounting opening 55, and engages the locking portion 56 with the upper engaging portion 48 of the check valve 20 at the time of mounting (see FIG. 2), and is securely engaged by the elastic force generated with the elastic deformation of the detachable main body 22 at the time of engagement so as not to fall off.

  The drainage device 1 of the present invention closely attaches the valve seat forming frame 21 to the valve mounting opening 55 of the bathtub drain cylinder 13 when the check valve 20 is detachably attached to the bathtub drain cylinder 13. Therefore, it is possible to reliably prevent water flow while the valve is closed. Furthermore, since the drainage device 1 of the present invention can attach and detach the water stop valve 20 by operating the handle 24 of the check valve 20, the attachment and detachment operation becomes easy, and the check valve 20 is disposed at a recessed position. Even if it is, it becomes possible to attach and detach easily.

(Second Embodiment)
FIG. 12 thru | or FIG. 19 shows this invention drainage device 61 of 2nd Embodiment, FIG. 12 is the longitudinal cross-sectional view which expanded the vicinity of the drainage receptacle part 12 for bathtub pans in this embodiment, FIG. The perspective view which shows the state which isolate | separated the outer side cylinder part 64 of the drainage cylinder part 63 for bathtubs, and the inner cylinder part 65 with a flange, the joining pipe 14, and the dust trap 80, FIG. FIG. 15 is a perspective view showing a state where the dust catcher 80 is mounted on the bathtub drain cylinder 63 assembled by joining 65, and FIG. 15 shows a state where the joining pipe 14 is joined to the assembled bathtub drain cylinder 63. FIG. 16 is a side view showing a state in which the garbage catcher 80 is attached to the bathtub drain cylinder 63, and FIG. 17 is a side inner cylinder 65 of the tank drain cylinder 63. And the valve body 75 of one check valve 70 is separated. FIG. 18 is a side view taken along the line FF of FIG. 17, FIG. 19 shows a valve body 75 of the check valve 70, FIG. (B) is a front view, (C) is a plan view, (D) is a rear view, and (E) is a left side view.

  The present invention drainage device 61 according to this embodiment is greatly different from the present invention drainage device 1 of the first embodiment (FIGS. 1 to 11) as shown in FIG. (Refer to FIG. 15) is lower than the height of the drainage pipe section 13 for bathtubs (see FIG. 1) of the first embodiment, and is the reverse of the high height and high water flow capacity according to the first embodiment. Since the stop valve 20 (see FIG. 1) cannot be attached, a plurality of sets (two sets in this example) of check valves 70 (see FIG. 17) are provided in the bathtub drain cylinder 63. . This invention drainage device 61 concerning this embodiment is drainage for bathtub pans from the cylinder inner side 63d of the drainage cylinder part 63 for bathtubs similarly to this invention drainage device 1 of the said 1st Embodiment (FIGS. 1-11). While preventing water flow to the inner side 12c of the receiving port portion 12, two sets of check valves 70, 70 allow water flow from the inner side 12c of the bathtub pan drainage receiving port portion 12 to the inner side 63d of the bathtub drainage tube portion 63. The bathtub water drained from the bathtub 2 by opening the bathtub drain plug 31 is allowed to pass through the tube inner side 63d of the bathtub drain tube 63 from the bathtub drain port 3, and then the bathtub drainage channel. It guide | induces by 17 and is discharged | emitted outside from the collective drainage channel 15 (refer FIG. 1). During this time, each check valve 70 maintains a closed state, and the bathtub drainage does not flow out to the inner side 12 c of the bathtub pan drainage receiving port 12.

  As shown in FIGS. 15 and 18, the bathtub drain cylinder 63 includes an outer cylinder 64 and a flanged inner cylinder 65, and a cylinder main body 65 c of the flanged inner cylinder 65 inside the outer cylinder 64. Is inserted into the upper opening peripheral edge 64a of the outer cylindrical portion 64 and the flange 65b of the inner cylindrical portion 65 is water-tightly joined (for example, bonded) to cover the upper opening of the outer cylindrical portion 64. . As shown in FIG. 12, the bathtub drain cylinder 63 is disposed on the inner side 12 c of the bathtub pan drain receptacle 12, and communicates the upper opening 63 a with the bathtub drain 3 and the lower opening 63 b with the partition wall 27. The cylindrical inner side 63d and the bathtub drainage channel 17 are reliably communicated with each other through the joint pipe 14 that can be expanded and contracted. The bathtub drainage channel 17 is bent upward at the downstream side to the collective drainage channel 15 (see FIG. 1) so as to store the water-sealed water in the channel, and the inside of the bathtub drainage cylinder portion 63. A sealing surface W1 is formed at 63d. The drainage pipe part 63 for bathtubs has the drainage generated by washing the inside of the bathtub pan 4 by sealing the bottom end of the cylinder main body part 65c of the inner cylinder part 65 with a flange at a position lower than the water seal surface W1. When each check valve 70 is opened and flows into the cylinder inner side 63 d, the bubbles in the cleaning drainage are prevented from flowing out to the bathtub drainage port 3.

  As shown in FIG. 12, the bathtub drainage pipe part 63 has a flange of the bathtub-side drain port member 30 screwed into the flange part 65 b of the flanged inner cylinder part 65 and the upper opening part 65 a of the flanged inner cylinder part 65. The opening periphery of the bathtub drainage port 3 is sandwiched in a watertight manner by the portion 30a. The bathtub-side drain port member 30 has a drain plug 31 built therein, and an operation button (not shown) provided at the edge of the bathtub and the drain plug are connected by an operation cable K, and the drain plug 31 is operated by operating the operation button. Open and close. The operation cable K is inserted through an operation cable insertion portion 66 provided in the bathtub drain cylinder 63.

  As shown in FIG. 12, the bathtub pan drain receiving portion 12 formed in the main body casing 11 is joined to the flange portion 12b formed on the upper end side thereof and screwed to the upper opening portion 12a, as in the first embodiment. The peripheral edge of the opening of the bathtub pan drainage 4 is tightly sandwiched between the flange 32a of the tool 32. The upstream side of the bathtub pan drainage channel 16 (see FIGS. 4 and 5) is in communication with the partition wall 27 forming the bottom of the bathtub pan drainage receiving port 12 (see FIG. 4). The bathtub pan drainage channel 16 (refer to FIG. 4) is bent upward at the downstream side to the collective drainage channel 15 (refer to FIG. 1) so as to store the water seal water in the water channel. The sealing surface W2 is formed on the inner side 12c of the drainage receiving port portion 12. The sealing surface W2 has the same or substantially the same height position (in this example, the same height position) as the sealing surface W1 of the bathtub drain cylinder 63.

  As shown in FIG. 12, the drainage device 61 of the present invention produces a larger amount of bathtub pan drainage than the drainage capacity of the bathtub pan drainage channel 16 (see FIGS. 4 and 5) by washing the inside of the bathtub pan 4 or the like. In this case, the water level on the inner side 12c of the bathtub pan drainage receiving port 12 rises due to the bathtub pan drainage leading to the bathtub pan drainage receiving port 12, and the inner side 63d of the bathtub drainage tube 63 and the outer side of the bathtub drainage tube 63 The valve body 75 of each check valve 70 swings and opens due to the water level difference on the inner side 12c) of the receiving port 12 (a state indicated by a two-dot chain line in FIG. 18). The drainage device 61 of the present invention in which each check valve 70 is opened diverts the bathtub pan drainage, and a part of the drainage device 61 passes through each open check valve 70 to open the cylinder inner side 63 d of the bathtub drainage pipe 63. The drainage capacity is guided by the bathtub drainage channel 17 having a larger drainage capacity than the bathtub pan drainage channel 16 and reaches the collective drainage channel 15, and the remaining part passes through the inner side 12 c of the bathtub pan drainage receiving port 12, It is guided by the pan drainage channel 16 (see FIGS. 4 and 5) and reaches the collective drainage channel 15, where both join and are discharged to the outside. In this manner, the drainage device 61 of the present invention provides a plurality of check valves 70 so that even if the amount of drainage of the bathtub pan increases, the bathtub pan drainage is diverted and guided by the two drainage channels 16 and 17. By merging in the collective drainage channel 15, the drainage capacity can be increased.

  17 and 18, each check valve 70 includes a valve seat 76 formed on an opening peripheral edge facing the cylinder inner side 63d in the water outlet 77 opened in the outer cylinder part 64 of the bathtub drain cylinder part 63. And a valve body 75 that pivotally supports shaft portions 75a and 75a (see FIG. 19) on a pair of bearing portions 78 and 78 provided on the cylinder inner side 63d of the outer cylinder portion 64. The valve body 75 pressed by the bathtub pan drainage is opened when the water level of the inner side 12c of the bathtub pan drain outlet 12 (see FIG. 12) rises due to the bathtub pan drainage. A valve state (state indicated by a two-dot chain line in FIG. 18) is set. The valve body 75 is attached to the shaft portions 75a, 75a, 78 of the valve body 75 to the bearing portions 78, 78 opened on the upper surface side when the flange portion 65b of the inner cylinder portion 65 with the flange is joined to the outer cylinder portion 64. 75a is inserted, and then, the flange portion 65b of the inner cylinder portion 65 with the flange is joined to the outer cylinder portion 64, and the upper surface side of the bearing portions 78, 78 is covered with the flange portion 65b. 78, so that the shaft portions 75a and 75a of the valve body 75 do not come out. The valve body 75 is made of a material such as a synthetic resin having a large specific gravity so that the valve body 75 does not float in the valve opening direction due to buoyancy even if the periphery of the valve body 75 becomes full.

  As shown in FIG. 12, the tub drain cylinder 63 is detachably attachable to a side surface portion facing the bathtub pan drain receiving port 12 upstream of the check valves 70, 70. Is provided. As shown in FIGS. 13 to 16, the garbage catcher 80 includes an intermediate bifurcated portion 82, capture portions 81, 81 extending from both sides of the bifurcated portion 82 and having a large number of small-diameter water holes 81 a, and bifurcated portions. An engaging portion 83 having a handle 84 extending from the portion 82 and having an engaging recess 83a formed inside the bifurcated portion 82 is provided. The garbage catcher 80 can be attached to and detached from the bathtub drainage pipe 63, and it is easy to perform maintenance and inspection such as removing it by removing it and moving it to a place where it can be easily inspected and maintained. I can do it. The dust catcher 80 is formed by engaging the engaging piece 85a of the engaging portion 85 provided in the operation cable insertion portion 66 of the drain tube portion 63 for the bathtub with the engaging recess 83a of the engaging portion 83 using the elasticity of the bifurcated portion 82. Are engaged and the handle 84 is lifted so as not to be forcedly disengaged against the elasticity of the bifurcated portion 79 so as not to be separated from the bathtub drain cylinder 63. When the dust catcher 80 is attached to the bathtub drain cylinder 63, the catcher 81, 81 faces the check valves 70, 70, and drains the bathtub pan that passes when the check valves 70, 70 are opened. The mixed dust is captured by the capturing portions 81, 81, and the smooth opening and closing of each check valve 70 can be maintained without causing the dust to reach between each valve seat 76 and the valve body 75.

It is a longitudinal section showing the whole 1st embodiment of the present invention drainage device. It is the longitudinal cross-sectional view which expanded the vicinity of the drainage receptacle part for bathtub pans in the embodiment. In the same embodiment, it is a longitudinal cross-sectional view which shows the middle of attaching a non-return valve to the valve-mounting opening part of the drain cylinder part for bathtubs. In the embodiment, it is a top view of the state which removed this invention drainage device from the bathtub and the bathtub pan. FIG. 5 is an enlarged cross-sectional view taken along line VV in FIG. 4. The relationship between the non-return valve and the drain pipe part for bathtubs in the same embodiment is shown, FIG. (A) is a perspective view showing a state in which the check valve is attached to the drain pipe part for bathtubs, FIG. FIG. 3 is a perspective view showing a disassembled check valve, a drain tube section for a bathtub, and a joining pipe separately. FIG. 1 shows a bathtub drainage section in the same embodiment, in which FIG. (A) is a front view, FIG. (B) is a plan view, FIG. (C) is a bottom view, and FIG. E) is a left side view, and FIG. (F) is a left side sectional view taken along line ff of FIG. The check valve in the same embodiment is shown, wherein FIG. (A) is a longitudinal sectional side view showing the detachable main body and the valve seat forming frame separately, and FIG. (B) is the detachable main body. FIG. 4C is a partially sectional side view showing a state before the valve body is attached by fitting the valve seat forming frame, and FIG. 3C is a partially sectional side view showing the assembled check valve. The valve seat formation frame body of the non-return valve in the same embodiment is shown, Comprising: FIG. (A) is a front view, FIG. (B) is a top view, FIG. (C) is a bottom view, FIG. (D) is a back surface. The figure and the figure (E) are left side views, and the figure (F) is a left sectional view taken along the line ff of the figure (A). The main part for attachment / detachment of the check valve in the same embodiment is shown, wherein FIG. (A) is a front view, FIG. (B) is a plan view, FIG. (C) is a bottom view, and FIG. (E) is a left side view, and (F) is a left cross-sectional view taken along line ff in FIG. (A). The valve body of the non-return valve in the same embodiment is shown, and FIG. (A) is a front view, FIG. (B) is a plan view, FIG. (C) is a bottom view, and (D) is a rear view. (E) is a left side view, and FIG. (F) is a left sectional view taken along the line ff of FIG. It is the longitudinal cross-sectional view which expanded the vicinity of the drainage receptacle part for bathtub pans in 2nd Embodiment of this invention drainage apparatus. It is a perspective view which shows the state which isolate | separated the outer side cylinder part of the drainage cylinder part for bathtubs in the same embodiment, the inner cylinder part with a hook, a joining pipe | tube, and the garbage trap. It is a perspective view which shows the state which attached the garbage catching tool to the drainage cylinder part for bathtubs which joined and assembled the outer side cylinder part and the inner cylinder part with a hook in the same embodiment. It is the side view which shows the state which joined the joining pipe | tube to the assembled drainage cylinder part for bathtubs in the same embodiment, and was longitudinally cross-sectionalized in the left half. It is a side view which shows the state which attached the dust catcher to the drain cylinder part for bathtubs in the same embodiment. It is a top view which shows the state which isolate | separated and showed the valve body of one non-return valve while showing the inner cylinder part with a flange of the tank drain cylinder part in the same embodiment. FIG. 18 is a side view taken along line FF in FIG. 17. The valve body of the non-return valve in the same embodiment is shown, Comprising: FIG. (A) is a perspective view, FIG. (B) is a front view, FIG. (C) is a top view, FIG. (D) is a rear view, FIG. (E) is a left side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 ... Bathtub drainage port, 5 ... Bathtub drainage port, 12 ... Bathtub drainage receptacle part, 13 (63) ... Bathtub drainage part, 13d (63d) ... Tube inner side, 15 ... Collective drainage path, 16 ... Bathtub Bread drain, 17 ... bath drain, 20 (70) ... check valve

Claims (3)

The bathtub pan drainage receiving part that receives the drainage of the bathtub pan, the bathtub drainage receiving part that is disposed inside the bathtub pan drainage receiving part, and extends from the bathtub pan drainage receiving part and gathers In a drainage device comprising a bathtub pan drainage channel leading to the drainage channel and a bathtub drainage channel extending from the inside of the bathtub drainage tube to the collective drainage channel, the valve is normally closed A check valve that prevents water from flowing from the tube inner side of the drainage cylinder part to the bathtub pan drainage receiving part and allowing water to flow from the bathtub pan drainage receiving part to the inside of the bathtub drainage cylinder part. A bathtub pan and a drainage device for a bathtub, wherein the drainage device is attached to a drain tube section for a bathtub. The check valve is detachably attached to the bathtub drain cylinder, and a dust trap is provided at a portion facing the inner side of the bathtub pan drain receiving port which is upstream of the valve body. The bathtub pan and drainage device for bathtubs according to claim 1 provided. In the check valve, an insertion space is formed between the frame portions on both sides where the opening portion is opened on the inside and the edges are joined, and a valve seat is disposed on the frame portion located on the tube inner side of the drainage cylinder portion for the bathtub. The formed valve seat forming frame body, and the dust trapping part that is detachably inserted into the insertion space of the valve seat forming frame body and is exposed to allow water to pass through the openings of the frame parts on both sides of the valve seat forming frame body, A detachable main body having pin receiving portions on both sides exposed to the inner side of the drainage tube portion for bathtubs and a handle protruding to the outer side of the drainage port portion for bathtub pan, and the inner side of the drainage tube portion for bathtubs. And a valve body pivotably attached to the pin receiving portions on both sides, and when the detachable main body is detachably locked to the bathtub drain cylinder using a handle, the bathtub drain The bathtub pan and bath according to claim 1, wherein the valve seat forming frame part is brought into close contact with a valve opening for opening formed in the tube part. Drainage system of use.

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