JP4078012B2 - Automatic drainage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of an automatic drain device that can open and close a drain plug attached to a drain port of a bathtub both manually and electrically.
[0002]
[Prior art]
Conventional methods for opening and closing the drain outlet of the bathtub include a method of inserting and removing a plug body such as a rubber plug connected to the other end of the chain hooked on the upper surface of the tank in the bathtub, For example, there is a method of opening and closing a button by pushing a button and a drain plug provided with a lock mechanism for maintaining the open and closed state in conjunction with a wire or the like from the outside of the bathtub. In particular, in the latter case, there is no chain or its latching part in the bathtub that gets in the way when taking a bath or cleaning, and when closing the cap, there is no need to bend the body in order to insert the plug into the drain. The demand is increasing because it can be easily opened and closed simply by pushing with a finger.
[0003]
In order to further improve the convenience, the technology of an automatic drainage device for a bathtub that opens and closes a drain plug by operating a motor not only by pushing a button on the top surface of the bathtub but also by operating a switch from outside the bathroom is disclosed in Japanese Patent Laid-Open No. Many inventions such as 10-2127747 have been invented.
[0004]
[Problems to be solved by the invention]
In order to obtain such an automatic drainage device that achieves both manual and electric operation, both the operation by pushing the button on the top of the bathtub and the operation by the electric motor are transmitted to the connecting shaft linked to the drain plug. It is necessary to be done. However, for that purpose, the structure is complicated, the number of parts is increased, and the assembly procedure is complicated.
[0005]
On the other hand, when constructing an automatic drainage device, a conventional operation of pushing a button provided on the upper surface of the bathtub and a drainage plug provided with a lock mechanism that holds the open and closed state from the outside of the bathtub, etc. Many parts of the bathtub drainage device (hereinafter referred to as “existing bathtub drainage device”) that opens and closes in conjunction with the motor, and the motor, its power conversion means, and the operation part such as the casing that houses them (motor peripheral components) The method of adding only can minimize new parts and is effective. However, diversion of such parts has been a problem, since it may affect the parts of the operation unit (motor peripheral parts) when a shape change occurs due to improvement of the diverted parts or cost reduction.
[0006]
Also, if an attempt is made to open or close the drain plug when there is some excessive reaction force acting on the drain plug, such as when the drain plug is stepped on, if the button is manually pressed, the reaction force will be The operator can immediately detect an abnormality such as a stopper being stepped on, so that the operation can be interrupted. However, if the opening or closing operation is performed by an electric motor, the electric motor or its control circuit Continued to operate without sensing the reaction force, and there was a risk of failure such as damage to the power transmission components or motor burnout.
[0007]
Further, when the drain plug is closed in the middle of drainage, the drain plug suddenly closes due to the pressure of the drain flow at the moment of closing. When this plugging operation is performed electrically, the operation shaft tends to move up via the operation wire and the connecting shaft at a speed faster than the upward movement speed of the operation shaft by the electric motor. Excessive stress is applied to the electric motor and power conversion means, and there is a risk of causing malfunctions such as malfunction of the drain plug and destruction of parts due to deformation of the covering member.
[0008]
The automatic drainage device according to claim 1 is a drainage device provided with an operation unit for manually or electrically operating a drain plug through an operation wire, and a lock mechanism for holding an open state of the drain plug. An operation shaft that moves up and down by operation, and power conversion means that converts electric operation into up and down movement of the operation shaft, Operation axis And a connecting shaft for connecting the operation wire, a first spring for holding the driven member for transmitting the operation of the power conversion means to the connecting shaft so as not to swing, and for moving the pressed connecting shaft up to a predetermined position. With components In addition, a plurality of guide plates are provided on the driven member so that the driven member is not swingable between the power conversion means and the connecting shaft. And configured.
[0010]
Claim 2 The automatic drainage device according to claim 1 In the described automatic drainage device, the driven member The position detection means for detecting the magnetic force of the magnetic member is disposed at a position facing the magnetic member when the driven member reaches a predetermined position, and one of the guide plates is provided with a motor. Formed a notch through the output shaft .
[0011]
Claim 3 The automatic drainage device according to claim 1 In the automatic drainage device described above, a magnetic member is provided on the upper surface of the driven member, and the position detecting means for detecting the magnetic force of the magnetic member is arranged at a position facing the magnetic member when the driven member reaches the uppermost end, A notch for inserting the output shaft of the electric motor was formed in one of the guide plates.
[0012]
Claim 4 The automatic drainage device according to claim 3 In the automatic drainage apparatus described above, the power conversion means can be moved laterally through an engaged member inserted through the operating shaft and sliding up and down only in the vertical direction, and a horizontally long engaging groove formed in a side surface of the engaged member. And an electric motor that rotates and drives the arm member to move the engaged member up and down, and the engaged member has a fitting groove that penetrates in the vertical direction on the side surface. In the groove, a housing fixed to the casing is fitted so as to be movable up and down, and position detecting means for detecting the magnetic force of the magnetic member is arranged in the housing, and the magnetic member is magnetic when the driven member reaches the uppermost end. It comprised so that it might oppose a member.
[0013]
Claim 5 The automatic drainage device described is An operation portion that performs manual or electric operation to open and close the drain plug manually or electrically via an operation wire, and a drainage device that includes a lock mechanism that holds the open state of the drain plug, an operation shaft that moves up and down manually. Power conversion means for converting electric operation into vertical movement of the operation shaft is provided, and a driven member that transmits the operation of the power conversion means to the connection shaft is swung between the power conversion means and the connection shaft that connects the operation wire. A first spring member that is held immovably and moves the pressed connecting shaft up to a predetermined position; and When pressing down the connecting shaft, when a reaction force of a predetermined value or more is applied to the connecting shaft, the guide tube is interlocked with the connecting shaft, and a second spring member that biases the guide tube upward is provided. Configured.
[0014]
Claim 6 The automatic drainage device according to claim 5 In the automatic drainage device described above, a spacer is interposed between the guide tube and the second spring member, and the spacer is made of a material that slides well with the guide tube, the second spring member, and the housing tube. Configured.
[0015]
Claim 7 The automatic drainage device according to claim 5 In the automatic drainage apparatus described, the power conversion means is set so that the operation shaft can be moved up and down with a stroke longer than the vertical movement length of the drain plug.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 shows an embodiment of an automatic drain device A for a bathtub according to the present invention. The automatic drain device A is attached to the uppermost edge 9 a of the rim portion of the bathtub 9 and is provided on the bottom surface 9 b of the bathtub 9. An operation part 11 for freely opening and closing the drain plug 10, a lock mechanism 12 which is installed in a space below the bottom surface 9 b of the bathtub 9 and holds the drain plug 10 open, and the operation part 11 and an operation wire 13 having rigidity in the length direction for interlocking the lock mechanism 12 with the lock mechanism 12.
[0017]
Further, 14 shown in FIG. 1 is an insertion tube disposed for inserting and holding the operation wire 13 connecting the operation unit 11 and the lock mechanism 12 on the outer tub side of the bathtub 9, and the upper end thereof is the operation unit. 11 is connected to a lower end (not shown), and the lower end is connected to a drain pipe 16 communicating with a drain port 15 of the bathtub 9. The lock mechanism 12 constituting the automatic drainage device A is fixed to the lower side of the bottom surface 9b of the bathtub 9 using a fixing means such as a set screw in the drain pipe 16, and is drained by the operation unit 11. When the stopper 10 is opened, the opening state is maintained.
[0018]
Next, the structure of the operation unit 11 will be described with reference to FIG. FIG. 2 shows a cutaway cross-sectional view of the main part of the operation part 11, and 17 is fitted in a fitting hole 18 drilled in the rim top edge 9 a of the bathtub 9, and a manual operation push button 19 ( (Hereinafter referred to as a manual button) is a bottomed cylindrical guide tube that is attached so as to be movable up and down. A shaft through hole through which the operation shaft 20 connected to the manual button 19 is inserted at the center of the bottom surface of the guide tube 17 17a is open.
[0019]
And the accommodation cylinder 21 is screwed to the said guide cylinder 17 in the state which clamped the rim | limb uppermost edge 9a of the bathtub 9 between the latching pieces 17b of the guide cylinder 17, On the side surface, the drive unit housing 23 housing the electric motor 34 is fastened and held by a fastening screw 24 as shown in FIG.
[0020]
A second spring in which the guide tube 26 has a predetermined elastic force between the bottom narrow portion 21a of the housing tube 21 and the bottom surface of the bottomed tubular cap nut 25 screwed to the lower tube 21a, for example. By the member 27, the disk part 26 a is attached to the lower surface of the overhang part 21 b of the housing cylinder 21.
[0021]
In the center of the bottom surface of the cap nut 25, an insertion hole 30 through which a covering member 29 threadedly engaged with the lower end of the cylindrical portion 26b of the guide cylinder 26 is inserted, and the guide cylinder is inserted through the hole 29a of the covering member 29. The operation wire 13 drawn into the inside 26 is crimped and fixed to the tip of the umbrella portion 32 a of the connecting shaft 32 via the first spring member 31. Note that the spring member 27 reliably prevents the spring member 27 from coming off from the cap nut 25 by a protruding piece 25a projecting inwardly into the insertion hole 30 of the cap nut 25.
[0022]
The connecting shaft 32 is attached from the inside of the tube portion 26 b of the guide tube 26 with its upper end entering the housing tube 21, and the upper end of the connecting shaft 32 contacts the lower surface of the driven member 33 provided in the housing tube 21. The driven member 33 is in contact with the operation shaft 20 so as not to swing. At this time, the operating shaft 20 and the connecting shaft 32 can be formed in a cross-sectional shape (for example, a circular shape) having a sufficient contact area such that the driven member 33 does not swing in the housing cylinder 21. Further, in order to reduce the number of newly installed parts, the guide tube 26, the connecting shaft 32, the operation wire 13, the covering member 29, and the parts on the drain plug side (including the lock mechanism 12) are the parts of the existing bathtub drainage device. It is desirable to divert from.
[0023]
FIG. 3 is a schematic configuration diagram showing the driven member 33, and FIG. 3A is a diagram showing the driven member 33 from the direction of arrows YY shown in FIG. FIG. 2B is a perspective view showing the appearance of the driven member 33. As shown in FIGS. 3A and 3B, the driven member 33 includes a pedestal 33a on a circular plate, a guide plate 33b provided with a plurality (arbitrary number) of standing on the pedestal 33a, and the guide plate. Among these, the rotation prevention guide plate 36 includes a notch 36a through which the output shaft 35 of the electric motor 34 shown in FIG. 2 is inserted.
[0024]
Further, a magnetic member 37 such as a permanent magnet having a predetermined magnetic force is attached to the pedestal 33a of the driven member 33 on the lower side of the base end of the rotation preventing guide plate 36. As shown in FIG. The plate 33b is sandwiched between the operation shaft 20 and the connecting shaft 32 so as not to be swingable along a gap between the inner wall surface of the housing cylinder 21 and an engaged member described later.
[0025]
Above the driven member 33, power conversion means 38 for converting the rotational movement of the output shaft 35 that outputs the rotation of the electric motor 34 through the speed reduction mechanism into the vertical movement of the operation shaft 20 is attached. , 39 is an engaged member fitted in a concave groove 39a having a retaining ring 40 fixed in the vicinity of the lower end of the operation shaft 20 formed in the lower surface.
[0026]
Next, the configuration of the power conversion means 38 will be described with reference to FIG. FIG. 4 is a view showing the power conversion means 38 from the direction of the arrow YY ′ in FIG. 2. Reference numeral 39 shown in FIG. 4A slides up and down along the operation shaft 20 by a predetermined distance. It is the engaged member attached so. On one side surface (the side surface in the direction in which the electric motor 34 in FIG. 2 is located) of the engaged member 39, the arm portion 41 a (the engaging member 41) of the engaging member 41 fitted to the tip of the output shaft 35 of the electric motor 34. Is constituted by a cylindrical arm portion 41a and a key groove 41c for fitting and fixing a key projection 35a formed at the tip of the output shaft 35, for example, an oval support portion 41b). As shown in FIG. 4A, the engaging groove 42 has a lateral width that is the distance between the axial center of the output shaft 35 of the motor 34 and the axial center of the arm portion 41a (FIG. 4). It is formed to have a length dimension that is at least twice as long as the sum of the radius r of the column forming X and the arm portion 41a. That is, it is formed so that a relationship of 2 (X + r) ≦ (engagement groove width) is established.
[0027]
A concave groove 39a into which a retaining ring 40 fixed to the vicinity of the lower end of the operation shaft 20 is fitted is formed in the lower surface of the engaged member 39, and the engaged member 39 is normally connected to the engagement member 39. The retaining ring 40 is supported on the operation shaft 20 with the concave groove 39a mounted thereon.
[0028]
FIG. 4B is a diagram showing the power conversion means 38 from the direction of the arrow ZZ ′ in FIG. 2. At the tip of the output shaft 35 of the electric motor 34, the base portion of the engaging member 41 as described above. The ellipse-shaped support portion 41b is fixed by fitting the key groove 41c to the key projection 35a of the output shaft 35, and the arm portion 41a suspended from the support portion 41b is engaged at its tip. The member 39 is engaged with the engaging groove 42 so as to be slidable in the lateral direction at a position where it does not contact the bottom surface 42 a of the engaging groove 42.
[0029]
Further, since the output shaft 35 to which the engaging member 41 is fitted passes through the notch 36a of the anti-rotation guide plate 36 provided upright on the base 33a of the driven member, the rotational movement of the driven member 33 is prevented. Is done. The engaged member 39 can move up and down satisfactorily due to the presence of the guide plate 33b and the rotation prevention guide plate 36 without rattling in the accommodating cylinder 21.
[0030]
2 is a position detecting means such as a reed switch that is attached to the lower part of the housing cylinder 21 and performs a switching operation in response to the magnetic force of the magnetic member 37. This position detection signal is displayed on the open / close display means of the operation panel installed at a location away from the bathtub 9 shown in FIG. 14 described later, whereby the open / close state of the drain plug 10 can be easily grasped. The attachment position of the position detection means is not limited to the lower stage portion of the housing cylinder 21, but can be any position that can recognize the open / close state of the drain plug 10 by detecting the magnetic force of the magnetic member 37 and performing a switching operation. Good anywhere.
[0031]
Next, the case where the said operation part 11 is assembled is demonstrated. First, the disc part 26a of the guide cylinder 26 is brought into contact with the lower surface of the overhanging part 21b above the lower end narrow part 21a of the housing cylinder 21. At that time, the guide tube 26 is attached in a state in which the second spring member 27 and the insertion hole 30 opened to the cap nut 25 are inserted in this order from the top. In this state, the second nut 27 sandwiched between the disc portion 26a and the cap nut 25 is secured by screwing the cap nut 25 with the screw portion provided on the outer peripheral surface of the lower end narrow portion 21a of the housing cylinder 21. After being compressed, the storage cylinder 26 is pressed toward the overhang portion 21b with a predetermined force.
[0032]
At this time, as shown in FIG. 12, between the second spring member 27 and the disc portion 26a of the guide cylinder 26, the disc portion 26a, the second spring member 27, and the lower end narrow portion of the accommodating cylinder 21 are provided. By means of a spacer 65 made of a material (for example, polyoxymethylene or polypropylene) having a good sliding property with the inner surface of 21a, the cap nut 25 is connected to the lower end narrow portion 21a of the accommodating cylinder 21, and the operation wire 13 and the second spring member. 27 can be screwed well without causing twisting.
[0033]
If a liner 64 (see FIG. 12) for adjusting the stroke is provided in advance between the disk portion 26a of the guide tube 26 and the overhanging portion 21b of the housing tube 21, a wire for aged use is provided. When the stroke for operating the lock mechanism 12 of the drain plug 10 is insufficient due to the wear of the cover 13 or the extension of the covering member 29, the stroke shortage can be eliminated by simply removing the liner 64. This eliminates the need for work such as replacement of the wire 13 and improves maintainability.
[0034]
On the other hand, on the upper surface of the connecting shaft 32 that has entered the housing cylinder 21, the driven member 33 taken into the housing cylinder 21 from the upper end opening of the housing cylinder 21 is placed with the guide plate 33b facing upward. Is done. Similarly, the operation shaft 20 that enters from the upper end opening of the housing cylinder 21, the manual button 19 is fastened to the upper end, and the engaged member 39 is inserted to the lower end is inserted into the groove 39 a of the engaged member 39. It is placed on the upper surface of the driven member 33 with the retaining ring 40 fitted. As a result, the driven member 33 is sandwiched between the operation shaft 20 having a sufficient contact area and the connecting shaft 32 so as not to swing.
[0035]
At this time, the engaged member 39 engages the arm portion 41 a of the engaging member 41 with the engaging groove 42. On the other hand, the support portion 41 b of the engagement member 41 is fitted to one end of an output shaft 35 inserted from the drive portion housing case 23 side of the insertion hole 44 formed in the side surface of the housing cylinder 21, and the output shaft 35 is waterproofed by the inner surface of the insertion hole 44 and the O-ring 35b.
[0036]
An electric motor 34 is attached to the projecting end of the output shaft 35 on the drive unit housing 23 side so as to be interlocked. The electric motor 34 is fastened and fixed to the side surface of the housing cylinder 21 with a fixing screw 45, whereby the output shaft 35 is positioned between the engaged member 39 and the engaging member 41 and the electric motor 34, and the output shaft 35 and the engaging member 41 are held in the housing cylinder 21 without falling off. The engaged member 39 is attached to the operation shaft 20 while being supported by the arm portion 41 a of the engaging member 41.
[0037]
A drive unit housing 23 for housing the motor 34 from the outside of the motor 34 is brought into contact with the side surface of the housing cylinder 21 via a packing 46. In this state, as shown in FIG. The motor 34 is covered with a waterproof structure by being fastened to a mounting hole provided in the housing cylinder 21 using
[0038]
Then, the guide cylinder 17 having the outer cylinder formed on the outer periphery is brought into contact with the accommodating cylinder 21 from the lower side of the fitting hole 18 formed on the rim top edge 9a of the bathtub 9 via a cushioning and waterproof packing 47. The housing cylinder 21 is attached to the rim portion uppermost edge 9 a of the bathtub 9 by being inserted through the fitting hole 18 and screwed into a female thread portion formed on the upper inner surface of the housing cylinder 21.
[0039]
Thus, by attaching the accommodation cylinder 21 to the bathtub 9, the operation part 11 in the automatic drainage apparatus A of this invention completes an assembly. Note that the magnetic member 37 and the position detecting means 43 shown in FIG. 2 are attached to the driven member 33 and the lower portion of the housing cylinder 21 in advance when the operation unit 11 is assembled.
[0040]
Next, the structure of the lock mechanism 12 of the drain plug 10 shown in FIG. 7 will be described. In FIG. 7, 48 is a main body cylinder that is loosely fitted in the drain pipe 16 and fixed to the bottom surface 9 b of the bathtub 9 together with the drain pipe 16 by a set screw 49. A plurality of guide pieces 50 are formed along the inner wall surface axial direction of the main body cylinder 48 and in the circumferential direction. Reference numeral 51 denotes a shaft rod having one end fastened to the drain plug 10 and the other end loosely fitted into the main body cylinder 48 through the drain port 15. Reference numeral 52 denotes a push hole in which a lower portion of the shaft rod 51 is formed in a hollow shape. The tip of the operation wire 13 inserted from the lower end opening of the main body cylinder 48 is in contact with the upper end of the push hole 52.
[0041]
A fastening ring 53 is integrally fixed to the lower outer periphery of the shaft rod 51. Reference numeral 54 denotes a movable ring attached to the shaft 51 so as to be rotatable and vertically movable above the fastening ring 53. 53a and 54a are projecting pieces formed on the outer peripheral sides of the fastening ring 53 and the movable ring 54 and fitted and held on the guide piece 50, respectively, and 53b and 54b are upper ends of the fastening ring 53 and It is a saw blade-like meshing tooth formed so as to be meshable with the lower end of the movable ring 54. Reference numeral 50b denotes a saw-toothed engagement tooth formed on the upper end of the guide piece 50.
[0042]
55 is a flange protruding from the center of the shaft rod 51 (near the upper portion of the movable ring 47). Between the flange 55 and the bottom surface 9b of the bathtub 9, when the drain plug 10 is opened, The lock mechanism 12 is configured by inserting a spring member 56 that urges it in the closing direction. In addition, 66 shown in FIGS. 7 and 8 is a water passage hole for communicating between the drain port 15 and the drain pipe 16.
[0043]
Next, the operation of the operation unit 11 will be described. First, when the operation unit 11 is electrically driven to open the drain plug 10 shown in FIG. 7, when the operation unit 11 of the automatic drain device A is in the state shown in FIG. When the upper surface of the latching piece 17b of the guide cylinder 17 coincides. The drain plug 10 on the bottom surface 9b of the bathtub 9 is in a closed state as shown in FIG. In this state, when the electric motor 34 of the operation unit 11 shown in FIG. 2 is driven, the electric motor 34 slowly rotates the output shaft 35 through a reduction mechanism including a reduction gear (not shown) housed inside.
[0044]
The engagement member 41 fitted to the tip of the output shaft 35 by rotating the output shaft 35 rotates its arm portion 41a around the axis of the output shaft 35, and the engaged member shown in FIG. The engaged member 39 is moved downward by coming into contact with the lower surface 42b of the engaging groove 42 of the joint member 39 and moving in the engaging groove 42 to the right or left in FIG. 4A. Let
[0045]
When the engaged member 39 is lowered, the driven member 33 that is in contact with the lower end of the engaged member 39 pushes the connecting shaft 32 downward. At this time, since the operating shaft 20 and the connecting shaft 32 are linearly arranged with the driven member 32 interposed therebetween, the lowering of the engaged member 39 inserted through the operating shaft 20 can be transmitted to the connecting shaft 32 satisfactorily. In addition, since the connecting shaft 32 is in contact with the driven member 33 with a sufficient contact area, there is no problem even if the connecting shaft 32 is somewhat loose or uneven due to repeated use. Can transmit power.
[0046]
At this time, the driven member 33 is provided with a rotation-preventing guide plate 36 through which the output shaft 35 of the electric motor 34 is inserted into a U-shaped notch 36a, so that the driven member 33 is restricted from rotating in the lateral direction. It is possible to move down in the state. That is, the magnetic member 37 attached to the driven member 33 is inevitably positioned in front of the position detecting means 43 when lowered.
[0047]
When the connecting shaft 32 is lowered, the operation wire 13 crimped and fixed to the umbrella portion 32a is pushed out from the guide tube 26, passes through the insertion tube 14 (see FIG. 7) piped into the rim portion of the bathtub 9, and is shown in FIG. The shaft rod 51 of the lock mechanism 12 is pushed up against the urging force of the spring member 56. As a result, the drain plug 10 moves up to the position of the chain double-dashed line shown in FIG. 8, but in the process in which the shaft 51 is pushed up, the fastening ring 53 fixed thereto is a saw-toothed engagement tooth. 53b abuts on the meshing tooth 54b of the movable ring 54, and the projecting pieces 53a and 54a are fitted to the guide piece 50 formed on the inner wall of the main body cylinder 48, so that it is pushed upward together with the shaft 51 without rotating. It is done.
[0048]
When the shaft 51 and the drain plug 10 are moved up to the position of the two-dot chain line shown in FIG. 8, the projecting piece 54a of the movable ring 54 is released from the guide piece 50 and can rotate, and the meshing teeth 53b of the fastening ring 53 It slides up and rotates around a shaft 51 by a slight angle. On the other hand, as shown in FIG. 6, when the output shaft 35 makes one rotation with respect to the phase of FIG. 2, the arm portion 41 a of the engaging member 41 fitted to the output shaft 35 becomes the engaging groove shown in FIG. The abutted member 39 is moved up to the position shown in FIG.
[0049]
As a result, the connecting shaft 32 is free from the downward pressing force when the lower end of the engaged member 39 and the driven member 33 are released, so that the first spring member is in contact with the umbrella portion 32a. When the operation wire 13 is pushed down by the urging force 31, the pressing operation of the operation wire 13 is finished. When the pressing operation of the operation wire 13 is completed, the drain plug 10 and the shaft rod 51 shown in FIG. 8 are lowered by the own weight and the urging force of the spring member 56.
[0050]
However, when the drain plug 10 and the shaft rod 51 are lowered from the position indicated by the two-dot chain line shown in FIG. 8 to the position indicated by the solid line, the meshing teeth 54b of the movable ring 54 rotated by a slight angle with respect to the shaft rod 51 are guided by the guide piece. 50 is engaged on the meshing teeth 50 b formed on the shaft 50. As a result, even if the shaft rod 51 is further lowered, the rod piece 55 projecting from the shaft rod 51 is received at the upper end of the movable ring 54, and the shaft rod 51 and the drain plug 10 are prevented from descending. 10 open states are maintained.
[0051]
In a state where the drain plug 10 is held open, the manual button 19, the operation shaft 20, the driven member 33, and the connecting shaft 32 shown in FIG. 9 are pushed up by the first spring member 31, that is, the first The urging force of the spring member 31 and the manual button 19, the operation shaft 20, the driven member 33, and the weight of the connecting shaft 32 are moved upward to stop.
[0052]
At this time, the engaged member 39 is interlocked with the movement of the output shaft 35 rotated once to open the drain plug 10, and the initial position shown in FIG. 2 (the position where the drain plug 10 is in the closed state). 9 (position shown in FIG. 9), but the manual button 19 is lifted from the maximum pressed position shown in FIG. It stops at the slightly raised position shown in (position moved up by the first spring member 31). Therefore, the operator can easily and reliably recognize that the drain plug 10 is opened from the depressed state of the manual button 19.
[0053]
Next, when the drain plug 10 is closed by electric operation, when the electric motor 34 is driven again in FIG. 9, the electric motor 34 rotates the output shaft 35 in the same manner as the above-described opening operation of the drain plug 10. Then, the engaged member 39 is lowered by the arm portion 41a of the engaging member 41 (see FIG. 6). As a result, the operation wire 13 is pushed again, the shaft rod 51 is raised, and the drain plug 10 shown in FIG. 8 moves up again from the position indicated by the solid line to the position indicated by the two-dot chain line.
[0054]
Then, as the shaft rod 51 rises, the fastening ring 53 fixed to the shaft rod 51 pushes up the movable ring 54 while abutting against it. Then, the movable ring 54 that has been engaged with the upper end of the guide piece 50 when the stopper is held open can be rotated with the meshing teeth 54b formed in a saw blade shape being released from the meshing teeth 50b of the guide piece 50, and can be fixed. By sliding on the meshing teeth 53b of the ring 53, the shaft 53 is rotated by a slight angle around the shaft rod 51, and the engaged state with the guide piece 50 is released.
[0055]
Subsequently, when the output shaft 35 of the electric motor 34 shown in FIG. 6 makes one rotation to return the engaged member 39 to the initial position shown in FIG. 2, the movable ring 54 has a saw-tooth shape as shown in FIG. When the meshing teeth 54b formed in this manner slide down on the meshing teeth 50b at the upper end of the guide piece 50, the meshing teeth 54b are further rotated by a slight angle around the shaft 51. Then, the drain plug 10 and the shaft rod 51 are lowered in a state where the projecting pieces 53a and 54a of the fastening ring 53 and the movable ring 54 are along the guide piece 50 by its own weight and the biasing force of the spring member 56. .
[0056]
By this series of operations, the drain plug 10 is lowered from the position shown by the two-dot chain line in FIG. 8 to the original position shown in FIG. When the drain plug 10 is closed, the operation wire 13 inserted into the push hole 52 of the shaft rod 51 operates in a state where the operation wire 13 is pushed downward by the upper end surface of the push hole 52, and the inside of the tub 9 rim portion is operated. 2 is pushed up through the insertion tube 14 of the connecting shaft 32 shown in FIG.
[0057]
Due to the push-up force by the operation wire 13 and the urging force of the first spring member 31, the connecting shaft 32 is connected to the manual button 19 via the driven member 33 and the operation shaft 20, and the upper surface of the manual button 19 is the latching piece 17 b of the guide tube 17. Since the height can be returned to substantially the same level as the upper surface, the operator can easily and reliably recognize that the drain plug 10 is closed.
[0058]
As described above, in the drainage device of the present invention, when the drain plug 10 is electrically opened and closed, the operator drives the motor 34 of the operation unit 11 to rotate the output shaft 35 once, so that the drain plug It is possible to switch between 10 opening and closing reliably and easily. Further, when the drain plug 10 is opened, the manual button 19 is located deep in the guide tube 17, and when the drain plug 10 is closed, the upper surface of the latching piece 17b of the guide tube 17 and the upper surface of the manual button 19 are almost the same. Since they are located at the matching height, the operator can easily and reliably recognize the open / close state of the drain plug 10 according to the position of the manual button 19.
[0059]
Next, a case where the drain plug 10 is manually opened and closed by the operation unit 11 shown in FIG. 2 will be described. When the manual button 19 of the operation unit 11 shown in FIG. 2 is pressed as shown in FIG. 10, the operation shaft 20 fixed to the manual button 19 slides through the insertion hole 39 b of the engaged member 39, and the driven member 33. Then, the connecting shaft 32 is pushed downward. By this pressing operation, the connecting shaft 32 pushes the operation wire 13 against the urging force of the first spring member 31 to the lock mechanism 12 side of the drain plug 10 shown in FIG.
[0060]
The lock mechanism 12 pushes up the shaft 51 to the position indicated by the two-dot chain line in FIG. 8 by pushing the operation wire 13. At this time, as described above, the movable ring 54 is rotated by a small angle around the shaft rod 51 by releasing the protruding piece 54 a from the guide piece 50, and is engaged with the meshing teeth 50 b formed at the upper end of the guide piece 50. Combined.
[0061]
Thus, even if the operator releases his hand from the manual button 19 shown in FIG. 10 and the operation wire 13 is not pushed out to the lock mechanism 12 side, the drain plug 10 is shown as a solid line from the position shown by the two-dot chain line in FIG. However, since the rod piece 55 of the shaft rod 51 is in contact with the upper end of the movable ring 54, it is not lowered more than this, and the open state can be maintained satisfactorily.
[0062]
When the operator releases the hand from the manual button 19, the connecting shaft 32 shown in FIG. 10 has no downward pushing force, and therefore the biasing force of the first spring member 31 that abuts against the umbrella portion 32 a of the connecting shaft 32. And the manual button 19, the operating shaft 20, the driven member 33, and the weight of the connecting shaft 32 are moved up to a position (from the position shown in FIG. 10 to the position shown in FIG. 9) and stopped. As a result, the manual button 19 stops at a position slightly raised from the maximum pressed position shown in FIG. 10 (see FIG. 9), and the operator recognizes the open state of the drain plug 10 by visually checking the manual button 19. it can.
[0063]
Subsequently, when manually closing the drain plug 10 that has been manually opened as described above, the manual button 19 located at the position of FIG. 9 is pushed again to connect the drain plug 10 via the operation shaft 20 and the driven member 33. The operation wire 13 crimped to the umbrella portion 32a at the tip of the shaft 32 is pushed out to the lock mechanism 12 side of the drain plug 10 shown in FIG.
[0064]
The operation wire 13 pushed out to the lock mechanism 12 side comes into contact with the upper end surface of the pushing hole 52 of the shaft 51 and pushes it upward, and the drain plug 10 is shown in a position indicated by a two-dot chain line in FIG. Push up. At this time, the engagement between the movable ring 54 and the guide piece 50 engaged in the state in which the drain plug 10 is held open is released, and the drain plug 10 and the shaft rod 51 have their own weight and the biasing force of the spring member 56. The drain port 15 is closed by the drain plug 10.
[0065]
Then, the operation wire 13 that comes into contact with the upper end surface of the push hole 52 of the shaft rod 51 in accordance with the closing operation of the drain plug 10 is pushed back to the operation portion 11 side shown in FIG. 10 together with the first spring member 31. The connecting shaft 32 is pushed upward. By the upward movement of the connecting shaft 32, the manual button 19 is returned to a position substantially coinciding with the upper surface of the latching piece 17 b of the guide cylinder 17 shown in FIG. 2 via the driven member 33 and the operation shaft 20.
[0066]
That is, in the automatic drain apparatus A of the present invention, when the drain plug 10 is opened and closed by manual operation, the operator pushes the manual button 19 installed on the rim portion uppermost edge 9a of the bathtub 9 to thereby operate the drain plug 10. It is possible to sequentially switch between opening and closing states. Further, in the opening / closing operation of the drain plug 10, for example, the drain plug 10 that is electrically opened may be manually closed, or conversely, the drain plug 10 that is manually opened may be closed by an electric operation. Needless to say.
[0067]
Next, when the drain plug 10 is opened electrically or manually as described above, the operation portion when an excessive load (such as when stepped on the drain plug 10) is applied to the drain plug 10 11 will be described.
[0068]
When an excessive load is applied to the drain plug 10, when the operation shaft 20 is pushed down by electric or manual operation, the operation wire 13 that is crimped and fixed to the umbrella portion 32 a of the connecting shaft 32 has the excessive load. Since the drain plug 10 cannot be opened due to the influence of the above, the operation wire 13 cannot be led out from the cylinder portion 26b of the guide cylinder 26 to the outside, and the inside of the cylinder portion 26b or the covering member 29 Twist is caused in the hole 29a.
[0069]
This twisting of the operation wire 13 causes friction between the operation wire 13 and the inner wall of the hole 29a of the covering member 29, and the guide tube 26 resists the urging force of the second spring member 27 as shown in FIG. Then, it is pushed down together with the covering member 29 screwed together. That is, when the excessive load applied to the drain plug 10 is larger than the upward biasing force of the second spring member 27, the guide cylinder 26 is pushed downward in conjunction with the depression of the connecting shaft 32.
[0070]
As a result, the connecting shaft 32 can move the operating shaft 20 downward in accordance with the rotation of the output shaft 35 without twisting the operating wire 13 in the hole portion 29a of the cylindrical portion 26b and the covering member 29 any more. Can do. Therefore, the speed reduction mechanism in the electric motor 34 interlocked with the output shaft 35 is never damaged or caused by the influence of the excessive load, and the durability and reliability of the operation unit 11 are improved. be able to.
[0071]
Further, when the drain plug 10 is closed in the middle of drainage, the drain plug 10 suddenly closes due to the pressure of the drain flow at the moment of closing. When this plugging operation is performed electrically, the operation shaft 20 tends to move up via the operation wire 13 and the connecting shaft 32 at a speed faster than the upward movement speed of the operation shaft 20 by the electric motor 34. 13, excessive stress is applied to the covering member 29, the electric motor 34, the power conversion means 38, etc., and there is a risk of inducing malfunctions such as malfunction of the drain plug and destruction of parts due to deformation of the covering member 29.
[0072]
However, the automatic drainage device of the present invention is connected to the operation shaft 20 via the connecting shaft 32 by the sudden closing operation of the drain plug 10 and the faster upward movement of the operation shaft 20. 13 is twisted in the hole 29 a of the covering member 29, and the operation wire 13 causes friction between the inner walls of the hole 29 a of the covering member 29 due to the twist.
[0073]
Then, due to the frictional force between the operation wire 13 and the inner wall of the hole 29a, the guide tube 26 shown in FIG. 11 moves downward together with the covering member 29 screwed together integrally against the urging force of the second spring member 27. To descend. Thereby, the operation wire 13 does not cause the operation shaft 20 to move up beyond the upward movement speed of the electric motor 34, and the power conversion means 38 such as the electric motor 34 and the engaged member 39 is not damaged. It can be operated.
[0074]
The second spring member 27 attached between the disk portion 26a of the guide tube 26 and the bottom surface of the cap nut 25 is smaller than the maximum lifting power and breaking load of the power conversion means 38 by the electric motor 34, and the bathtub 9 And the operation wire 13 and the inner wall of the hole 29a of the covering member 29 have a predetermined friction between them. It shall be composed of a material that generates force.
[0075]
As described above, the operation unit 11 in the automatic drainage device of the present invention is a device that is operated when the operation shaft 20 is pushed down with an unnecessary load applied to the drain plug 10 and when the drain plug 10 is closed during drainage. Since 11 is configured to include means that can reliably avoid the occurrence of failure or malfunction, a drain plug opening / closing device with high safety and reliability can be provided.
[0076]
FIG. 12 is a longitudinal sectional view showing the operation unit 11 of the drainage device A in another embodiment of the present invention. In FIG. 12, the same components as those of the operation unit 11 shown in FIG.
[0077]
In FIG. 12, 57 is a mounting hole drilled in the side surface (side facing the electric motor 34) of the housing cylinder 21, and 58 is engaged by engaging the casing flange 58a with the edge of the mounting hole 57. It is a bottomed rectangular tube-shaped housing that is fixed.
[0078]
Similarly to the engaged member 39 shown in FIG. 2, 39 b is configured to be slidable by a predetermined distance in the vertical direction on the operating shaft 20 with the arm portion 41 a of the engaging member 41 engaged with the engaging groove 42. This is the engaged member. A fitting groove 59 penetrating in the vertical direction is formed on the side surface of the engaged member 39b, and the bottom of the housing 58 is fitted into the fitting groove 59 so that the engaged member 39b is rotated. It is mounted so that it can move up and down with its movement suppressed.
[0079]
In FIG. 12, reference numeral 37a denotes a magnetic member fitted on the upper surface of the driven member 33 at a position where it can come into contact with the lower end of the casing 58, and 43a denotes a position facing the magnetic member 37a in the casing 58. Position detecting means such as a reed switch that is arranged and performs a switching operation in response to a magnetic force when the magnetic member 37a approaches.
[0080]
FIG. 13 is a view showing the engaged state of the engaged member 39b, the housing 58 and the engaging member 41 from the direction of the arrows ZZ ′ shown in FIG. As shown in FIG. 13, the engaged member 39 b is restrained from rotating by fitting the bottom portion of the housing 58 into the fitting groove 59, and moves up and down on the operation shaft 20. The driven member 33 located below the engaged member 39b is prevented from rotating by inserting the output shaft 35 of the electric motor 34 into the notch 36a of the rotation prevention guide plate 36 projecting upward. Is done.
[0081]
The assembly sequence of the operation unit 11 shown in FIG. 12 is almost the same as the assembly procedure of the operation unit 11 shown in FIG. 2, but as a different procedure, the housing 58 is fitted in the mounting hole 57 of the housing cylinder 21 in advance. In addition, when the operation shaft 20 with the manual button 19 fastened is inserted from the upper end opening of the housing cylinder 21, the housing 58 is inserted into the fitting groove 59 of the engaged member 39b through which the operation shaft 20 is inserted. This is the point where the bottom is fitted. Since other procedures are the same as the assembly of the operation unit 11 shown in FIG. 2, they are omitted here.
[0082]
Subsequently, the operation of the operation unit 11 shown in FIG. 12 is the same as the operation of the operation unit 11 shown in FIG. When the engaged member 39a moves up and down by electricity, the housing 58 is fitted in the fitting groove 59 of the engaged member 39b. can do.
[0083]
As a result, the engagement groove 42 of the engaged member 39b can always maintain the state in which the arm portion 41a of the engagement member 41 is accurately engaged, and the rotational movement of the output shaft 35 of the electric motor 34 can be maintained. It can be reliably converted into the vertical movement of the connecting shaft 32. Further, since the backlash of the engaged member 39b is eliminated, noise generated when the engaged member 39b is operated can be eliminated.
[0084]
FIG. 14 shows a control device for controlling the automatic drain device A of the present invention. In FIG. 14, reference numeral 60 is provided on the wall surface of the bathroom, for example, and includes switches 60a and 60b for instructing water supply / drainage to the bathtub 9. Reference numeral 61 denotes a controller for controlling the electric motor 34, the position detecting means 43 of the drain plug 10 and the operation panel 60, and 62 is a power source for supplying electric power to the electric motor 34 and the controller 61.
[0085]
And now, when the drain plug 10 is in the opened state, the driven member 33 of the operation portion 11 is located in the deep part of the guide cylinder 17 as shown in FIG. The magnetic flux of the magnetic member 37 passes through the position detecting means 43 satisfactorily. For example, when the position detection means 43 is a reed switch, the position detection means 43 is turned on. When the water supply switch 60a of the operation panel 60 is turned on in this state, the controller 61 recognizes that the drain plug 10 is in the open state from the state where the reed switch is turned on, and outputs the motor 34 according to the data table shown in FIG. By rotating the shaft 35 once, the drain plug 10 is closed and water is supplied to the bathtub 9.
[0086]
Further, when the drain plug 10 is in the closed state, the driven member 33 of the operation portion 11 is located on the upper surface in the guide tube 17 shown in FIG. 2, and therefore the magnetic flux of the magnetic member 37 attached to the driven member 33 is. Does not pass through the position detecting means 43 and the reed switch is not in the on state. When the water supply switch 60a of the operation panel 60 is turned on in this state, the controller 61 recognizes that the drain plug 10 is in the closed state from the open state of the reed switch, and turns the motor 34 in accordance with the data table shown in FIG. Water is supplied to the bathtub 9 while the drain plug 10 is kept closed without being driven.
[0087]
Further, when the drain switch 60b is turned on when the drain plug 10 is in the closed state, the controller 61 recognizes the closure of the drain plug 10 from the open state of the reed switch, and the output shaft of the electric motor 34 for draining. 35 is rotated once to open the drain plug 10 to drain the water in the bathtub 9.
[0088]
Further, when the drain switch 60b is turned on when the drain plug 10 is in the opened state, the controller 61 recognizes that the drain plug 10 has been opened based on the reed switch being turned on, and drives the motor 34. And the open state of the drain plug 10 is maintained.
[0089]
Thus, since the automatic drain apparatus A of the present invention can accurately control the opening / closing operation of the drain plug 10 and the supply / drainage to the bathtub 9 by the controller 61, the operator can supply / drain switch 60a on the operation panel 60. , 60b can be arbitrarily inserted to open and close the drain plug 10 to supply and drain hot water into the bathtub 9. As a result, for example, the problem that water is supplied to the bathtub 9 without noticing the open state of the drain plug 10 and water is wasted can be reliably prevented.
[0090]
Further, the operation panel 60 is provided with a display means 63 made of a light emitting element such as an LED, and the lighting state of the display means 63 is changed so that the operator can more reliably recognize the open / closed state of the drain plug 10. It may be.
[0091]
Further, when the magnetic member 37 is attached to the driven member 33 and the position detecting means 43 for detecting the magnetic flux of the magnetic member 37 and the electric signal line connected thereto are accommodated in the drive housing 23, the position detecting means 43 Problems such as deterioration due to exposure to the outside air can be prevented.
[0092]
When the control device shown in FIG. 14 is used in the automatic drain device shown in FIG. 12, the controller 61 shown in FIG. 14 recognizes that the drain plug 10 is closed when the reed switch 43a is in the on state. When the reed switch 43a is in the open state, it is necessary to design so that the drain plug 10 is recognized as being open.
[0093]
Further, in the automatic drainage device shown in FIG. 12, the magnetic member 37a attached to the driven member 33 is arranged in a so-called approach type that operates in parallel to the reed switch 43a arranged in the housing 58. As shown in FIG. 2, the magnetic member 37a operates perpendicularly to the reed switch 43a, so that the detection sensitivity of the magnetic force of the magnetic member 37a is improved and the reliability of the device is improved as compared with a so-called passing arrangement. It can be increased dramatically.
[0094]
As described above, in the automatic drainage device of the present invention, the driven member is sandwiched between the power conversion means and the connecting shaft so as not to swing. Therefore, the connecting shaft to be brought into contact with the driven member has a restriction on the shape of the tip. The connection shaft can be diverted easily from existing parts of the bathtub drainage device, and as a result, the guide tube, the operation wire, the covering member, etc., and the parts on the drainage tap side can also be diverted from the existing bathtub drainage device parts. Therefore, the automatic drainage device can be configured while keeping the new member to a minimum.
[0095]
In addition, since the automatic drainage device of the present invention is configured to include a guide plate that prevents the driven member from rotating, when the driven member includes a magnetic member, the magnetic member is positioned directly below due to the presence of the guide plate. It can be lowered and reliably lowered to the front position of the position detecting means, and the magnetic force of the magnetic member can be detected well.
[0096]
Furthermore, the automatic drainage device of the present invention eliminates the backlash caused by the vertical movement of the engaged member by attaching a housing that prevents the engaged member from rotating, and the engagement member arm extends from the engagement groove. It is possible to reliably prevent the part 41a from coming off and noise from being generated due to the rattling.
[0097]
Further, the automatic drainage device of the present invention includes a magnetic member on the upper surface of the driven member, and by disposing a position detection means for detecting the magnetic force of the magnetic member in the housing, the magnetic force of the magnetic member can be arranged in an proximity type arrangement. Thus, the detection sensitivity can be improved dramatically.
[0098]
Furthermore, the automatic drainage device of the present invention is manually or electrically operated when an unnecessary load is applied to the drainage plug and the drainage plug cannot be opened satisfactorily or when the drainage plug is abruptly closed due to the pressure of the drainage flow. Since it is configured to include means for avoiding unnecessarily transmission of power by the drain plug, or means for avoiding forcible upward movement of the operation shaft due to closure of the drain plug, It is possible to reliably prevent the operation wire and the covering member from being damaged or broken.
[0099]
【The invention's effect】
The automatic drainage device according to claim 1 can realize a mechanism for opening and closing the drain plug via an operation wire by manual or electric operation with a relatively simple and easy structure, and a connection that makes contact with the driven member There are few restrictions on the shape of the tip of the shaft, and parts of the existing bathtub drainage device (connection shaft, guide tube, operation wire, covering member, drain plug, etc.) can be diverted easily, minimizing new parts An automatic drainage device can be constructed while retaining.
[0100]
Also, Claim 1 Since the automatic drainage device described in the above is configured by projecting a plurality of guide plates on the driven member, the driven member can move up and down well without swinging in conjunction with the vertical movement of the operation shaft. Thus, the reliability of the apparatus can be improved.
[0101]
Claim 2 In the automatic drainage apparatus described in the above, the position detection means for detecting the magnetic force of the magnetic member is attached to the side surface of the driven member so that when the driven member reaches the uppermost end, the position is opposite to the magnetic member. Since the electric signal line connected to the position detecting means can be arranged in the drive unit housing cage, the position detecting means and the electric signal line are in contact with the outside air and deteriorated / damaged. Can be reliably prevented.
[0102]
Claim 3 Described in did Since the automatic drainage device can arrange the magnetic member attached to the driven member and the position detection means for detecting the magnetic force of the magnetic member in a so-called approach type, the sensitivity of magnetic force detection in the position detection means is greatly improved. Can reliably open and close the drain valve
[0103]
Claim 4 Since the automatic drainage device described in (1) can suppress the rotation of the engaged member by the housing, the engaged member does not rattle when it moves up and down, and is engaged from the engaging groove. Problems such as disengagement of the arm portion of the combined member can be reliably prevented, and the reliability of the apparatus can be improved.
[0104]
Claim 5 In the automatic drainage device described in the above, when a load forcibly pressing the drainage plug from the outside is applied during the opening or closing of the drainage plug, when the reaction force of the connecting shaft exceeds a predetermined value, By lowering the guide cylinder together with the connecting shaft, it prevents the excessive load from being applied to the motor and the various parts that make up the operating section. Great reliability Can be improved.
[0105]
Claim 6 In the automatic drainage device described in the above, a spacer made of a slidable material is interposed between the guide tube and the second spring member. The two spring members and the operation wire are difficult to twist, and the assemblability is improved. In addition, the second spring member can be attached regardless of the shape of the guide cylinder due to the interposition of the spacer, and there are fewer restrictions on the shape when the guide cylinder is diverted from existing drain plug components.
[0106]
Claim 7 The automatic drainage device described in 1) is configured with power conversion means that allows the operation shaft to move up and down with a stroke longer than the vertical movement length of the drainage plug. It is possible to solve the shortage of the drain plug stroke caused and to open or close the drain plug with certainty.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an automatic drain device of the present invention.
FIG. 2 is a cutaway cross-sectional view of a main part of an operation unit constituting the automatic drainage device of the present invention.
FIG. 3 is an enlarged view showing a driven member constituting the operation unit.
FIG. 4 is an enlarged view showing a power conversion means that constitutes the operation unit.
FIG. 5 is an external view of the operation unit as viewed from the side.
FIG. 6 is an operation explanatory diagram illustrating a state in which the operation unit is operated electrically.
FIG. 7 is a cross-sectional view showing a coupling state between a drain plug and a lock mechanism constituting the automatic drain device of the present invention.
FIG. 8 is an explanatory view showing a state in which the drain plug is locked to be opened.
FIG. 9 is an explanatory diagram illustrating a state of the operation unit in the locked state.
FIG. 10 is an operation explanatory diagram illustrating a state where the operation unit is manually operated.
FIG. 11 is an operation explanatory view showing a state in which the operation unit is operated electrically while an unnecessary load is applied to the drain plug.
FIG. 12 is a cutaway cross-sectional view of a main part of an operation unit constituting the automatic drainage device according to claim 5 of the present invention.
FIG. 13 is a cutaway cross-sectional view of a main part of an operation unit constituting the automatic drainage device according to claim 5 of the present invention.
FIG. 14 is a block diagram showing a control device of the automatic drain device of the present invention.
FIG. 15 is a control data table in the control device.
[Explanation of symbols]
9 Bathtub
9a Top edge of rim
10 Drain tap
11 Operation unit
12 Locking mechanism
13 Operation wire
14 Intubation tube
16 Drain pipe
17 Guide tube
17a Shaft through hole
17b Hanging piece
18 Insertion hole
19 Manual button
20 Operation axis
21 container
21a Bottom narrow part
21b Overhang
23 Drive housing
24 Tightening screw
25 Cap nut
25a protruding piece
26 Guide tube
26a Disc part
26b Tube part
27 Second spring member
29 Coating member
29a hole
30 insertion port
31 First spring member
32 connecting shaft
32a Umbrella
33 Follower
33a pedestal
33b Guide plate
34 Electric motor
35 Output shaft
35b O-ring
36 Anti-rotation guide plate
37, 37a Magnetic member
38,38a Power conversion means
39, 39b Engaged member
39a Groove
40 Retaining ring
41 engaging member
41a Arm part
41b Support part
41c keyway
42 engaging groove
42a Bottom
42b bottom surface
43c top surface
43 43a Position detection means
46 Packing
47 Waterproof packing
48 Body cylinder
49 Set screw
50 guide pieces
50b, 53b, 54b meshing teeth
51 shaft
52 Pusher
53 Fastening ring
53a, 54a
54 Movable ring
55 pieces
56 Spring member
57 Mounting hole
58 Enclosure
58a housing piece
59 Fitting groove
60 Operation panel
60a Water supply switch
60b Drain switch
61 controller
63 Open / close indication means
64 liner
65 Spacer
66 Water vent
A Automatic drainage device

Claims (7)

An operation unit that manually or electrically opens and closes the drain plug, and a drainage device that includes a lock mechanism that holds the open / close state of the drain plug. Power conversion means for converting the operation into vertical movement of the operation shaft is provided, and the driven member that transmits the operation of the power conversion means to the connection shaft cannot swing between the operation shaft and the connection shaft that connects the operation wire. And a first spring member that moves the pressed connection shaft up to a predetermined position , and the driven member projects a plurality of guide plates between the power conversion means and the connection shaft. An automatic drainage device which is mounted so as not to swing . The driven member includes a magnetic member on a side surface, and the position detecting means for detecting the magnetic force of the magnetic member is disposed at a position facing the magnetic member when the driven member reaches a predetermined position, and the guide plate is 2. The automatic drainage device according to claim 1, further comprising a notch through which the output shaft of the electric motor is inserted . The driven member comprises a magnetic member on the upper surface, the position detecting means for detecting the magnetic force of the magnetic member is configured to place in a position that is operated by the magnetic member when the driven member are close, the guide plate motor automatic drainage device according to claim 1, characterized by being configured with a notch for inserting the output shaft of the. The power conversion means includes an engaged member that passes through the operation shaft and slides up and down only in an up-and-down direction, and an arm that is movably engaged with a horizontally long engaging groove formed in a side surface of the engaged member. And an electric motor that drives the arm member up and down to move the engaged member up and down, and the engaged member has a fitting groove penetrating in the vertical direction on the side surface. The fixed housing is fitted so as to be movable up and down, and position detecting means for detecting the magnetic force of the magnetic member is arranged in the housing so that the driven member faces the magnetic member when it reaches the uppermost end. The automatic drainage device according to claim 3 , wherein the automatic drainage device is configured. An operation unit that manually or electrically opens and closes the drain plug, and a drainage device that includes a lock mechanism that holds the open / close state of the drain plug. Power conversion means for converting the operation into vertical movement of the operation shaft is provided, and a driven member for transmitting the operation of the power conversion means to the connection shaft is oscillated between the power conversion means and the connection shaft connecting the operation wire. And a first spring member that causes the pressed connection shaft to move up to a predetermined position, and when the connection shaft is pressed down, when a reaction force greater than a predetermined value is applied to the connection shaft, An automatic drainage device comprising: a guide cylinder that is pressed in conjunction with a connecting shaft; and a second spring member that biases the guide cylinder upward . The guide tube is configured by interposing a spacer between the guide tube, the second spring member, and the housing tube, and a spacer is interposed between the guide tube, the second spring member, and the housing tube. Item 6. An automatic drainage device according to item 5 . 6. The automatic drainage device according to claim 5, wherein the power conversion means is set so that the operation shaft can be moved up and down by a stroke longer than the vertical operation length of the drain plug .

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