JPH0819713B2 - Occupancy detection device for hot water washers for western-style toilets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is applied to a hot water washing device of a Western-style toilet having a function of washing the anus and the like with hot water, and determines whether or not the user is sitting on the toilet seat. The present invention relates to a seating detection device for detecting.

[Prior Art] Some seating detection devices for hot water washers of this type have already been proposed by the present inventor.

In this device, as shown in FIG. 11, it is formed by the elastic body of the toilet seat leg 3, and a box-shaped groove 31 is provided at the center of the toilet seat mounting surface 33.
A pressing protrusion 32 is formed on the bottom surface of the groove 31 over the entire length of the groove 31. A toilet seat foot projection 36 is integrally formed on the toilet contact surface 35 at a position facing the pressing projection 32.

The pressure-sensitive element 1 is formed by sandwiching both sides of an elongated linear pressure-conducting rubber 11 with flat braided wires 12 as electrodes, and covering the whole with rubber 13. Has a property that the resistance value of several tens of MΩ or more becomes less than several Ω by applying a pressure of about several hundreds of grams, and the lead wires 14 and 15 are soldered to the two flat braided wires 12 respectively. The insulating plate 5 is inserted for electrical insulation between the flat braided wires 12. The pressure-sensitive element 1 is attached to a toilet seat foot cap 2 which is fitted in the groove 31 of the toilet seat foot 3. The toilet seat foot cap 2 is made of an elastic material similarly to the toilet seat foot 3, and the lead wires 14, 15
Is provided to the outside, and the pressure sensitive element 1 is fixed to the toilet seat leg 3 to form a toilet seat foot with the pressure sensitive element 1 built therein.

[Problems to be Solved by the Invention] In the conventional example, a long and narrow linear conductive wire 11 is sandwiched between flat braided wires 12 and covered with a covering rubber 13 to form an elongated linear shape. Then, the flat braided wire 12 was cut and soldered to the lead wires 14 and 15 to electrically connect the pressure-sensitive element.

And, in order to insulate between the two flat braided wires 12, the insulating plate 5 was inserted between the flat braided wires 12, but the insulating plate 5 is small and difficult to handle, and the toilet seat foot cap 2 is attached. When it is inserted into the toilet seat leg 3, it has a drawback that it is easy to fall off or slip off, resulting in poor insulation.

Further, the pressing projection 32 provided on the bottom surface of the groove 31 on the side opposite to the toilet contact surface 35 pushes the pressure sensitive element 1 when a person sits on the toilet seat, but not only the covering rubber 13 but also the lead. line
Since the flat braided wire 12 to which 14 and 15 are soldered is also pressed, the flat braided wire 12
The soldered part has a drawback that it is repeatedly bent and the soldered part of the flat braided wire 12 breaks and breaks while sitting on the toilet seat many times.

Further, since the flat braided wire 12 of the pressure-sensitive element 1 is formed by braiding a large number of thin wires, it is easy to absorb the solder due to the capillary phenomenon, and when the lead wires 14 and 15 are soldered, the solder does not reach the inside of the covering rubber 13. Since the flat braided wire 12 is hardened by being soaked and hardened, the portion of the flat braided wire 12 into which the solder is soaked is not easily deformed even when a force is applied to the pressure sensitive element 1, and as a result, the detection load at that portion is increased. Therefore, there is a drawback in that the width for detecting the load of the pressure sensitive element 1 becomes extremely narrow.

The present invention has been made in view of the above point, and an object of the invention of the first aspect is to prevent the insulation plate from being displaced or detached during the assembly work to cause insulation failure and to improve productivity. The present invention is to provide a seating detection device for a hot-water washing machine for a Western-style toilet, which has a low cost and a small number of parts.

Further, the object of the invention of claim 2 is that a load at the time of pressing is not applied to the connecting portion between the pressure sensitive element and the lead wire,
(EN) It is an object to provide a seating detection device for a hot-water washing machine for a Western-style toilet which has a long life against repeated loads.

Further, the object of the invention of claim 3 is that in the invention of claim 1 or 2, even if the pressure-sensitive element is short, there is no increase in the detection load of the pressure-sensitive element caused by the penetration of the solder into the flat braided wire. Another object of the present invention is to provide a seating detection device for a warm-water washing machine for a Western-style toilet that can obtain a predetermined detection width.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention according to claim 1 provides a groove on the side opposite to the toilet contact surface and a pressing protrusion on the bottom surface of the groove. Toilet seat foot made of elastic body,
A toilet seat foot body is formed by attaching a pressure sensitive element, and a toilet seat foot cap made of an elastic body that fits in the groove so that the pressure sensitive element faces the pressing protrusion. In the seating detection device for a Western-style toilet bowl hot water washer, the insulator for insulating the electrical connection of the pressure-sensitive element attached to the toilet seat foot cap is formed integrally with the toilet seat foot cap.

According to a second aspect of the present invention, a pressure sensitive element is provided by attaching a toilet seat foot made of an elastic body having a groove on the side opposite to the toilet contact surface and a pressing protrusion on the bottom surface of the groove, and a pressure sensitive element. Seating detection of a Western-style toilet bowl warm water washing machine in which a toilet seat foot body is formed with an elastic seat foot cap that fits in the groove so as to face the pressing protrusion and the toilet seat foot body is fixed to the toilet seat back plate In the device, the pressing protrusion on the bottom surface of the groove of the toilet seat foot is formed so as to face the pressure sensitive element so as not to press the electrical connection portion of the pressure sensitive element when a load is applied.

According to a third aspect of the present invention, in the first or second aspect of the invention, the pressure-sensitive element has a flat braided wire whose ends are fixed by welding, and the flat braided wire has a weldable end and a lead wire. It is electrically connected by soldering.

[Operation] In the present invention, when a person sits on the toilet seat, the toilet seat foot in contact with the toilet bowl is pressed and elastically deformed by the weight, and the pressing protrusion of the toilet seat foot presses the opposing pressure-sensitive element, and the resistance value thereof. From a very high value (several MΩ) to a low value (tens of Ω to almost 0)
Ω), and the seating is detected by electrically detecting the change in the resistance value.

Here, in the process of pressing the pressure-sensitive element by the pressing tab of the toilet seat foot, an insulator that serves as an electrical insulation between the two flat braided wires is integrally formed on the toilet seat foot cap, so The two flat braided wires can be reliably insulated without being displaced or disengaged even if they are roughly handled or a large force is repeatedly applied.

Also, since the pressing tab of the toilet seat foot is provided not over the entire length of the bottom of the groove but except where it faces the soldering portion of the pressure sensitive element during assembly, even if a large load is repeatedly applied to the toilet seat foot. Since no load is applied to the soldered portion of the pressure-sensitive element, breakage due to repeated bending does not occur in the soldered portion.

Furthermore, the pressure-sensitive element has a flat braided wire whose ends are fixed by welding, and the weldable end of the flat braided wire and the lead wire are electrically connected by soldering. The solder does not stay in the fixed portion and soak into the flat braided wire inside the pressure sensitive element, and it is possible to prevent the pressure sensitive element from degrading in function.

[Examples] The present invention will be described below with reference to Examples.

1 to 4 are drawings showing a toilet seat foot 3 with a built-in pressure-sensitive element 1 according to one embodiment, in which the pressure-sensitive element 1 built into the toilet seat foot 3 is shown.
Is an elongated linear pressure conductive rubber 11 sandwiched on both sides by a flat braided wire 12 serving as an electrode and covered with a covering rubber 13 and cut at an appropriate length to cover one end. The rubber 13 is removed to expose the two flat braided wires 12, the ends of the flat braided wire 12 are fixed by welding as shown in FIG. 5, and after the fixation, the lead wires 14, 15 are attached to the fixed portions. Is formed by soldering and is attached to the toilet seat foot cap 2 fitted in the groove 31 of the toilet seat foot 3.

The toilet seat cap 2 is made of an insulating elastic body and has a holding portion 21 for holding the pressure sensitive element 1 from both sides as shown in FIG. 6 (a). This holding portion 21 is formed by a thin film portion 22 at one end. Connected to each other. As shown in FIG. 6 (b), the pressure sensitive element 1 is provided on both sides of the covering rubber 13 so that the exposed two flat braided wires 12 are separated from each other by the thin film portion 22 of the toilet seat foot cap 2. The toilet seat cap 2 is inserted along the holding portion 21 while slidingly engaging the projection 8 protruding in the longitudinal direction with the inner surface of the holding portion 21 of the toilet seat cap 2 in the provided groove 7. Is attached to. Here, the thin film portion 22 constitutes an insulator of the lead wire connecting portion 16 which is an electrical connecting portion of the pressure sensitive element 1.

The toilet seat foot 3 is made of an elastic material as in the conventional example, and has a groove 31 on the side opposite to the toilet contact surface 35. When the toilet seat foot cap 2 is attached, the lead wire connecting portion 16 of the pressure-sensitive element 1 is attached.
A pressing protrusion 32 is provided on the bottom surface of the groove 31 except where the pressing protrusion 32 faces. The toilet seat foot cap 2 to which the pressure-sensitive element 1 is attached has a groove in the toilet seat foot 3 so that the pressure-sensitive element 1 enters inside.
It is inserted in 31 and the gap 4 between the toilet seat foot 2 and the toilet seat foot cap 2
Is sealed with an adhesive to prevent ingress of water and ammonia. Also, the area around the lead wires 14 and 15 is closed with the adhesive 6.

FIG. 7 and FIG. 8 show another embodiment, which is basically the same as the above embodiment, but is intended to realize a higher environmental resistance performance by increasing the bonding area. ,
The toilet seat foot cap 2 has an outer edge portion 9, while the toilet seat foot 3 also has a shallow groove portion at a portion corresponding to the outer edge portion 9 of the toilet seat foot cap 2.
10 is provided, and the outer edge portion 9 and the shallow groove portion 10 are sealed with an adhesive. The area around the lead wires 14 and 15 is also closed with an adhesive.

The seat-foot-type seating detection device of the first or second embodiment thus formed has the back surface attached to the back plate of the toilet seat 17 as well as the toilet seat foot 18 as shown in FIGS. 9 and 10. The lead wires 14 and 15 of the seating detection device pass through the inside of the toilet seat 17 and are connected to a main body (not shown) of a warm toilet bowl for a style toilet.

When the seat 17 is not seated, the pressure-sensitive element 1
Although a voltage is applied to the two flat braided wires 12 of No. 2, no current is applied to the pressure conductive rubber 11 because no force is applied to the pressure conductive rubber 11. When seated, first, the projection 34 of the toilet seat leg 3 is bent by the load,
At the same time, the pressing protrusion 32 provided in the groove 31 is bent, so that the pressure-sensitive element 1 is pressed by the pressing protrusion 32 and a force is applied to the pressure conductive rubber 11 inside, so that the resistance of the pressure conductive rubber 11 is increased. The value becomes almost 0Ω, and a current flows from one flat braided wire 12 to the other flat braided wire 12 to detect the seated state.

EFFECTS OF THE INVENTION In the invention described in claim 1, since the insulator for insulating the electrical connection portion of the pressure-sensitive element attached to the toilet seat foot cap is formed integrally with the toilet seat foot cap, it is rough during assembly. Even if it is handled with a large amount of force and repeatedly applied with a large force, it will not be displaced or come off due to the insulator.
The flat braided wire of the book can be reliably insulated, and as a result, insulation failure does not occur, so that the productivity is improved.

In the invention according to claim 2, the pressing projection piece on the bottom surface of the groove of the toilet seat foot is formed so as to be opposed to the pressure-sensitive element so as not to press the electrical connection portion of the pressure-sensitive element during loading. There is an effect that the attached part does not break due to repeated bending and has a long life against repeated loads.

According to a third aspect of the present invention, in the first or second aspect of the invention, the pressure-sensitive element has a flat braided wire whose ends are fixed by welding, and the flat braided wire has a weldable end and a lead wire. Since they are electrically connected by soldering, when soldering, the solder does not stay in the fixed part and soak into the flat braided wire inside the pressure sensitive element, thus preventing the function deterioration of the pressure sensitive element. Since the detection width is narrowed as a result, the predetermined detection width can be obtained even if the pressure-sensitive element is short, so that the cost can be reduced.

[Brief description of drawings]

1 is a top view of an embodiment of the present invention, FIG. 2 is a front sectional view of the same, FIG. 3 is a side sectional view of the same, FIG. 4 is a bottom view of the same, and FIG. FIG. 6 (a) is a perspective view of the pressure-sensitive element, FIG. 6 (a) is a perspective view of the toilet seat foot cap, and FIG. 6 (b) is the same.
Is a perspective view of a toilet seat foot cap incorporating the above pressure-sensitive element, FIG. 7 is a front sectional view of another embodiment of the present invention, and FIG.
FIG. 9 is a side sectional view of the same as above, FIG. 9 is a side view of a toilet seat to which the seating detection device of the present invention is attached, FIG. 10 is a bottom view of a toilet seat to which the seating inspection device of the present invention is attached, and FIG. 11 (a) is FIG. 11 (b) is a side view of the conventional example, FIG. 11 (c) is a side view of the conventional example, FIG. 11 (c) is a sectional view taken along line AA of FIG. 11 (a), and FIG. 11B is a sectional view taken along line BB in FIG. 11A, and FIG. 11E is an enlarged view of a portion D in FIG. 11D. 1 is a pressure sensitive element, 2 is a toilet seat foot cap, 3 is a toilet seat foot, 12 is a flat braided wire, 14 and 15 lead wires, 16 is a lead wire connecting portion, 21 is a holding portion, 22 is a thin film portion, 31 is a groove, Reference numeral 32 is a pressing protrusion, and 35 is a toilet bowl contact surface.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-228719 (JP, A) JP-A-2-5915 (JP, A) Actual opening 1-171300 (JP, U) Actual opening Sho-64- 47300 (JP, U)

Claims (3)

[Claims] 1. A toilet seat foot made of an elastic body having a groove on the side opposite to the toilet contact surface and a pressing protrusion on the bottom surface of the groove, and a pressure-sensitive element is attached to the pressure-sensitive element to attach the pressure-sensitive element. In the seating detection device for a Western-style toilet bowl hot water washer formed with a toilet seat foot cap made of an elastic body that fits in the groove so as to face the toilet seat foot body, and the toilet seat foot body is fixed to the toilet seat back plate, A seating detection device for a warm toilet bowl for a western-style toilet, wherein an insulator for insulating an electrical connection portion of a pressure-sensitive element attached to the toilet seat foot cap is formed integrally with the toilet seat foot cap. 2. A toilet seat foot made of an elastic body having a groove on the side opposite to the toilet contact surface and a pressing protrusion on the bottom surface of the groove, and a pressure-sensitive element is attached to the pressure-sensitive element. In the seating detection device for a Western-style toilet bowl hot water washer formed with a toilet seat foot cap made of an elastic body that fits in the groove so as to face the toilet seat foot body, and the toilet seat foot body is fixed to the toilet seat back plate, The seating of a hot water washing device for a Western-style toilet characterized in that the pressing projection on the bottom surface of the groove of the toilet seat foot is formed so as to face the pressure-sensitive element so as not to press the electrical connection portion of the pressure-sensitive element when loaded. Detection device. 3. The pressure-sensitive element has a flat braided wire whose ends are fixed by welding, and the weldable end of the flat braided wire and the lead wire are electrically connected by soldering. The seating detection device for a hot water washer for a Western-style toilet according to claim 1 or 2.