JPH03218761A - Bath hot water suction port cover of bathtub - Google Patents

Abstract

PURPOSE:To prevent the suction port cover from falling off by toeing it, and by such external force as mischief of a child by interposing a detaining ring whose diameter can be expanded and contracted elastically in a space formed by each engaging groove, and fixing doubly a male screw and a female screw. CONSTITUTION:In the center of the reverse side of a suction port cover (c), a stay S1 in which a male screw (m) is formed in the tip is provided projectingly. By screwing the male screw (m) to a female screw (f), the suction port cover (c) is attached to a suction port (i). In this regard, the male screw (w) and the female screw (f) are formed by double-thread screws, and each screw (f), (m) can be screwed and unscrewed by a small number of times of turning. Also, the outside diameter of a projecting-provided base end part to the suction port cover (c) of the stay S1 is expanded larger than the screw part and an engaging groove t1 is formed on its outside peripheral surface. Moreover, the inside diameter of the inside peripheral surface of the outside of a supporting piece S2 is expanded larger than the screw part, and an engaging groove t2 is formed on the same inside peripheral surface. Each engaging groove t1, t2 are opposed to each other, and in an annular space formed by each engaging groove t1, t2, a detaining ring (r) is interposed.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a bath water inlet cover for a bathtub.

(Explanation) Conventional technology As a form of bathtub, Japanese Patent Application Laid-Open No. 59-IJ5058
As stated in the publication, a bath water circulation flow path consisting of a bath water suction flow path and a bath water forced flow path is interposed between the bathtub body and a circulation pump installed outside the bathtub body. There are some that have an air intake section midway through the bath water forced flow channel.

With this configuration, the circulation pump sucks the bathwater in the bathtub body through the bathwater suction channel, and the circulation pump also causes the bathwater to be passed through the bathwater forced flow channel from the discharge part of the same channel into the bathtub body. At this time, air is mixed into the bath water using the negative pressure caused by the jetting of the bath water, so that the bath water mixed with air bubbles can be jetted into the bathtub body.

Then, the suction port cover provided at the suction port of the bath water suction channel that opens on the inner surface of the bathtub body simply screws the male screw protruding from the back side of the cover into the female screw provided inside the suction port. Alternatively, it is attached to the inlet by simply locking it using an elastic material such as a retaining ring or hook.

(c) Problems to be Solved by the Invention However, if the male screw protruding from the back of the suction port cover is simply screwed into the female screw provided inside the suction port, the problem will occur due to vibrations caused by air bubbles, etc. If the condition becomes loose, the suction port cover may fall off, and if the screws are tightened strongly to prevent it from falling off, it is inconvenient to inspect and clean the filter screen etc. provided inside the suction port.

Furthermore, if the device is simply secured using an elastic material such as a retaining ring or a hook, there is a risk that the device may easily fall off due to a toe getting caught or a child playing a trick.

(2) Means for Solving the Problems In the present invention, a bath water circulation system consisting of a bath water suction channel and a bath water forced flow channel is provided between the bathtub body and a circulation pump installed outside the bathtub body. In a bathtub configured to allow bath water to be circulated between the bathtub body and a circulation pump by providing a flow path, an inlet cover is placed over the inlet of the bath water suction flow path opened on the inner surface of the bathtub body. , a stay is provided protruding from the back side of the cover, and the tip of the stay is screwed to a support piece fixed inside the intake port, and,
On the outer peripheral surface of the protruding base of the stay and the inner peripheral surface of the support piece (S2),
It is characterized by forming engagement grooves and making them face each other, and in the space formed by each engagement groove, a locking ring whose diameter can be elastically expanded and contracted by cutting out a part is interposed. The present invention aims to provide a bath water inlet cover for a bathtub.

(e) Functions/Effects According to the present invention, engagement grooves are formed on the outer peripheral surface of the protruding base of the male screw protruding from the back surface of the inlet cover, and on the outer inner peripheral surface of the female screw, respectively. By interposing a locking ring whose diameter can be elastically expanded and contracted in the space formed by each engagement groove, the male screw and female screw are doubly fixed. , the inlet cover will not fall off due to external force such as getting a toe caught by screwing it on or a child playing a prank, and
Even if the screws become loose due to vibrations caused by air bubbles, the engagement between the engagement groove and the locking ring will prevent the inlet cover from falling off, so all you need to do is lightly tighten the screws on the inlet cover, and the cover will be removed. It is easy to attach and detach the filter, and the filter net inside the suction port can be inspected and cleaned easily.

(F) Embodiment FIG. 1 shows the overall structure of a bubble-generating bathtub (A) equipped with an inlet cover (c) according to the present invention, and the bubble-generating bathtub (A) has a box-shaped top opening. The bathtub body (1
), on the front and rear walls, and on the left and right side walls, two foot-side and
Dorsal and ventral jet nozzles (2) are provided, and an air intake portion (5) is provided on the lower surface of a collar-shaped edge (la) formed around the periphery of the bathtub body (1).

In addition, a pump protection case is installed outside the bubble-generating bathtub (^), and a circulation pump (P) for circulating bath water inside the case and an inverter-controlled pump that drives the pump (P) are installed inside the case. A driving motor (M), a filter (43) that filters bath water, a motor (M) for driving the nozzle valve body (Ml), which will be described later, and a motor for driving the valve body for adjusting the amount of air bubbles ( M2) and a control unit (c) that controls the driving of the electric three-way valve (45).

Further, between the circulation pump (P) and the bubble generation bathtub (A), there is provided a bath water suction channel (10) for sending bath water from the bubble generation bathtub (A) to the circulation pump (P). Circulation pump (
A bath water circulation flow path (D) is provided, which includes a forced bath water flow path (11) for sending bath water from P) to the bathtub (A).

The bath water suction channel (10) has one end opened in the lower part of the bathtub body (1), and the other end communicates with the water intake port of the circulation pump (P).

The bath water forced flow path (1l) has one end communicating with the water outlet of the circulation pump (P), and the other end communicating with the jet nozzle (2).

Further, the air intake portion (5) communicates with each jet nozzle (2) via an intake flow path (l2).

Then, the control unit (c) controls the pump drive motor (M
) and the nozzle valve body forward/backward drive motor (M1
) by controlling the rotational position of the jet nozzle (2) and rhythmically varying the jetting pressure and amount of hot water spouted from the spouting nozzle (2), a variety of hot water jetting forms can be achieved.

Each part of the bubble generating bathtub will be specifically explained below.

The bath water suction channel (10) has an inlet (1) provided at its starting end.
) is opened at the lower part of the bathtub body (1), and its terminal end is communicated with the water intake port of the circulation pump (P).

As shown in FIGS. 2 and 3, the suction port (1) has a substantially cylindrical suction port body (if) with a female thread formed on the inner peripheral surface of the front end.
and a substantially cylindrical mounting bracket (I
2), between the flange (l3) formed at the front end of the mounting bracket (I2) and the front end surface of the suction body (l1), By supporting the wall (lb) around the hole, the bathtub body (1)
The intake port (1) is attached to the.

In addition, a bridge (14) is provided protruding from the inner surface of the mounting bracket (l2), and while the bridge (14) enables the circulation of bath water, a female thread (f') is provided for attaching the inlet cover (c). Attach the supporting piece (S2) with the mounting bracket (l2).
It is supported approximately at the center of the inside.

As shown in Fig. 3, the inlet cover (c) is made of a circular plate whose peripheral edge is rounded and bent toward the back surface, and whose central portion has a gentle curvature and bulges out toward the front surface in an approximately spherical shape. It is formed into a roughly bowl-shaped shape, and a plurality of elongated holes (15) for circulating bath water are arranged approximately concentrically. Furthermore, long holes are also provided on the side of the suction port cover (c) to allow bath water to circulate.

Further, a stay (81) having a male thread (1) formed at the tip is protruded from the center of the back surface of the inlet cover (e), and the male thread (m) is screwed into the female thread (f). Accordingly, the suction port cover (c) is attached to the suction port (1). Note that the male screw (m) and female screw (f) are formed as double thread screws, and each screw (D(s)) can be screwed in or unscrewed with a small number of rotations. The effort and time required to attach and detach the suction port cover (e) can be reduced.

Furthermore, the outer diameter of the proximal end of the stay (S1) protruding from the suction port cover (c) is made larger than the threaded part to form an engagement groove (11) on the outer peripheral surface thereof, and the support piece The inner diameter of the outer inner circumferential surface of (S2) is made larger than that of the threaded part, an engaging groove (t2) is formed on the inner circumferential surface, and each engaging groove (tlHt2) is made to face each other. A locking ring (r) is interposed in the annular space formed by the matching grooves (t1) and (tz).

The locking ring (') is made of a wire having elasticity such as stainless steel, and is made of a wire rod having elasticity such as stainless steel.
), a plurality of curved parts (2) and straight parts (3), and the diameter of the ring (r) can be elastically expanded and contracted to form an inlet (1). Attach the inlet cover (c
) with the ring (r) attached, the curved part (r2) of the same ring (r)
The outer periphery of the support piece (S2) contacts the bottom of the engagement groove (t1), and the inner periphery of the straight part (3) contacts the engagement groove (t1) of the stay (St).
t2).

In addition, the thickness of the above wire rod is adjusted to the stay (S1) and the support piece (
The depth of the engagement groove (tl) (t2) of S2) is smaller than the depth of the engagement groove (tl) of the stay (81) when attaching the inlet cover (c) to the inlet (1). With the retaining ring (r) fitted externally, insert the male screw (1) into the support piece (S2
) into the female thread (``), then the locking ring (r)
The engagement groove (t2) of the support piece (S2) is elastically reduced in diameter.
), the locking ring (r) expands in diameter, the outer periphery of the curved part (r2) abuts the bottom of the engagement groove (tl) of the support piece (S2), and the straight part (r3) Inner circumference stays (S1)
The suction port cover (c) can be locked to the suction port (1) by coming into contact with the bottom of the engagement groove (t2).

As mentioned above, the threading between the male thread (m) and the female thread (f) and the engagement groove (tD (t2)) with the locking ring (r) interposed
By adjusting this, the suction port cover (c) is fixed in a double manner.

In addition, the width of the engagement groove (tl) of the stay (Sl) is made larger than the thickness of the locking ring (r) to provide play in the above-mentioned locking state and absorb manufacturing errors. , In addition, a tape (1) is provided on the inner surface of each engagement groove (t1) (t2).
) to smooth the diameter reduction of the locking ring (r) when attaching and detaching the suction port canopy (c) to and from the suction port (1).

In addition, a filter net (F) is installed between the inner circumferential surface of the inlet main body (ll) and the outer circumferential surface of the female thread (r) to filter the bath water sucked from the inlet (1). I try to do that.

As shown in Fig. 5, the circulation pump (P) has a lower impeller chamber (83) (3) in the pump casing (82).
4) are connected to each other via a communication flow path (!12d), and the lower impeller chamber (34) is connected to the bath water suction path (!12d).
It communicates with the bath water suction channel (10) through the bath water suction channel (10) through the bath water suction channel (!
1), and the upper impeller chamber (33) is communicated with a filter (48), which will be described later, via a forced filtration passage (32e).

Then, an impeller shaft (35) passing vertically through the central part of the upper and lower impeller chambers (33) and (34) is mounted, and the upper and lower impellers (13a) (!14a) are mounted on the same axis (35).
) are installed coaxially in the upper and lower impeller chambers (33) and (34), respectively, and the drive shaft (39) of the pump drive motor (M) has the impeller shaft (35) mounted on the pump casing (82). It is linked to.

The pump drive motor (M) is a three-phase AC external fan type induction motor, and is driven by AC power whose frequency is controlled by an inverter (1).

In addition, as shown in FIG. 1, a pressure sensor (48) is installed in the middle of the bath water forced flow path (1l) to detect the pressure of the bath water being forced through the flow path (11). Same sensor (48)
The detection results from the bathtub body (
1) The water level inside the tank is detected.

The filter (43) is a downflow type in which a granular filter medium is enclosed to enable backwashing.

Each jet nozzle (2) is configured to be able to change the jet amount and jet pressure of bath water, and will be described with reference to FIG. 6.

The spout nozzle (2) is a cylindrical nozzle body 20 connected in communication with the foot-side spout nozzle connection port (Ig) of the bathtub body (1).
) and a valve seat (20) formed at the rear of the nozzle body (20).
1a), an ejection amount adjusting valve body (22) that approaches and separates from the valve seat (21a) from the rear, and a nozzle valve body movement driving motor (M1) that moves the valve body (22) back and forth. A throw swingably supported in front of the nozzle body (20)}
(24).

Further, an air intake passage (l2) whose one end is connected to the air intake part (5) is connected to the air supply port opened in the central peripheral wall of the nozzle body (20).
) A bath water forced flow channel (11) is connected to the rear peripheral wall of the bathtub.

The motor (Ml) for driving the nozzle valve body forward and backward is configured to perform a stepping operation, and is attached to the rear wall (20g) of the nozzle body (20).
A ball screw (23c) is attached to the rotating shaft of the motor (Ml) to convert the rotational movement of the motor (Ml) into linear movement in the axial direction, and the jet amount adjustment valve is connected via the valve body support rod (21d). The body (22) is moved forward and backward.

Then, the bath water is fed under pressure from the forced bath water flow path (11),
Air is ejected from the gap between the valve seat (21a) and the ejection amount regulating valve body (22), and the negative pressure generated by this jet causes outside air to be mixed into the bath water through the air intake part (5). I have to.

As shown in Fig. 1, the air intake part (5) is connected to the bathtub body (
The upper surface opening of the air intake part (5) is covered with a lid body to form an air intake opening to the outside air in the alliance body, Air intake part (5
) is supplied to each jet nozzle (2) via each intake flow path (12) (12).

In addition, an air bubble amount adjustment valve is provided in the air intake part (5), and a motor (M2) for driving the valve element for adjusting the air bubble amount, which has the same configuration as the motor (M1) for driving the valve element for the nozzle forward and backward, is connected and controlled. By controlling the motor (Ml) in section (c), the amount of bubbles mixed into the bath water can be adjusted.

As shown in FIG. 1, the control unit (c) includes a microprocessor (MPU) and input/output interfaces (50) (5).
1), a memory (52), and a timer (53).

The input interface (50) includes a rotation sensor (39d) of the circulation pump (P), a pressure sensor (48) that detects the water pressure in the bath water forced flow path (l1), and an infrared signal receiving unit (
30b), a bath water temperature sensor (T), etc., which detects the temperature of bath water in the bathtub body (1), etc. are connected.

In addition, (23r) shows the valve body position sensor of the jet nozzle (2), and (9l) shows the valve position sensor of the air intake part (5>).

The output interface (5l) includes an inverter (1),
A motor (M1) for driving the nozzle valve body forward and backward, a motor (M2) for driving the valve body for adjusting the amount of air bubbles, and an electric three-way valve (45) are connected.

In addition, the memory (52) stores each motor (M) (Ml) (M2), electric three-way valve (45), etc. based on the output signal from each sensor described above and the signal from the remote controller (30). A control program for controlling the drive unit is stored.

The remote controller (30) includes a bath water heating switch (1), power connection/disconnection, various jet mode specifications, bubble volume control,
A group of switches for controlling bath water jet strength, jet cycle control, jet nozzle usage pattern switching, circulation usage pattern specification, jet nozzle designation, filter cleaning, etc., power supply, jet flow mode, bubble volume, bath water jet strength, bath water It is equipped with a group of indicators that display the operating status of the ejection cycle, ejection nozzle designation, filter cleaning, bath water heating, etc.

Furthermore, an infrared signal transmitter (30a) is provided at the front end of the remote controller (30) to transmit an infrared signal corresponding to each switch operation, and the same signal is transmitted to the air intake (30a).
5) is received by the receiving section (30b) (see Figure 1), and manually inputted to the control section (c), and according to the control program stored in the memory (52), the actuator corresponding to the operated switch is activated. I'm trying to drive it.

The remote controller (30) can float on the surface of the bath water and can be easily operated by the bather.

With the above configuration, the bubble generating bathtub (A) can control the rotation speed of the circulation pump (P) and each jet nozzle (2) via the control unit (c) by the remote controller (30) that can be operated on the bath water surface. Adjustment of the opening/closing amount and opening/closing speed of the provided jet volume regulating valve body (22), and the opening/closing amount and opening/closing speed of the bubble volume regulating valve <5d> provided in the air intake part (5), electric three-way valve (45)
), and the above-mentioned circulation pump (P
), adjustment of the opening/closing amount and opening/closing speed of the valve body (22) for regulating the amount of bubbles, adjustment of the opening/closing amount and opening/closing speed of the bubble amount regulating valve, and a combination thereof, to control the amount of water emitted from each injection nozzle. 6 types of jet modes (mild blow, shiatsu blow, pulse blow, massage blow, wave blow, and air pulse blow) are set with differences in the amount of bath water spouted, the jet pressure, and the amount of air bubbles mixed in. For each mode, it is possible to increase or decrease the amount of bubbles, the intensity of the hot water jet, increase or decrease the jet period, etc., and to select the usage pattern of the six jet nozzles to which the jet mode is applied.

Furthermore, by operating the filter cleaning switch, the flow path of the electric three-way valve (45) can be switched to perform backflow cleaning of the filter (43).

[Brief explanation of drawings]

Fig. 1 is an explanatory conceptual diagram of the bubble generating bathtub according to the present invention, Fig. 2 is a front view of the suction port, Fig. 3 is a sectional view taken along the line 1-I in Fig. 2, and Fig. 4 is a diagram of the locking ring. A front view, FIG. 5 is a longitudinal sectional view of the pump drive motor and circulation pump, and FIG. 6 is an enlarged longitudinal sectional view of the jet nozzle. (A): Bubble generating bathtub (P): Circulation pump (D): Bath circulation flow path (c): Inlet cover (f): Female thread (I): Inlet (■): Male thread ('') : Locking ring (t1) (t2) : Engagement groove (l) : Bathtub body (2) : Spout nozzle (5) : Air intake part (10) : Bath water suction channel (11) : Forced bath water supply flow path

Claims (1)

[Claims] 1) A bath water suction channel (10) is provided between the bathtub body (1) and a circulation pump (P) installed outside the bathtub body (1).
A bathtub ( In A), a bath water suction channel (10) opened on the inner surface of the bathtub body (1)
An inlet cover (c) is placed over the inlet (i) of the inlet (i), a stay (S1) is provided protruding from the back side of the cover (c), and a stay (S1) is provided on the back of the cover (c).
S1) Support piece (S2) whose tip is fixed inside the suction port (i)
), and an engaging groove (t1) is provided on the outer circumferential surface of the protruding base of the stay (S1) and the inner circumferential surface of the support piece (S2), respectively.
(t2) are formed to face each other, and each engagement groove (t1) (
A bath water inlet cover for a bathtub, characterized in that a locking ring (r) whose diameter can be elastically expanded and contracted by cutting out a part of the locking ring (r) is interposed in the space formed by step t2).