JPH0829130B2 - Heating toilet seat and manufacturing method thereof - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a heated toilet seat in which a heater is embedded in the toilet seat, and the purpose thereof is to efficiently wire the heater to simplify the structure of the toilet seat itself. In addition, to provide a heating toilet seat that can be easily cleaned and can be used hygienically, and a manufacturing method that can improve the productivity of the heating toilet seat and economically manufacture the heating toilet seat. is there.

[Prior art]

In a conventional heated toilet seat, for example, as shown in FIG. 16, a heater 2 is attached to a metal foil sheet 1 having good thermal conductivity such as aluminum foil, and the metal foil sheet 1 is attached to the back side of the toilet seat body 3, The heater 2 is energized to warm the upper surface of the toilet seat body 3 at a predetermined temperature. When the heater 2 is attached, the heater 2 is arranged in a wiring pattern on a metal foil sheet 1 punched to have a plane shape of, for example, a synthetic resin toilet seat body 3 formed in a horseshoe shape. After heating the outer cover (made of resin) of the heater 2 and welding it to the metal foil sheet 1, the metal foil sheet 1 is attached to the back side of the toilet seat body 3, and then the bottom plate 4 is attached to the bottom of the toilet seat body 3. Combined by means of heat welding, adhesion, etc.
Was being manufactured.

[Problems of conventional technology]

In the heated toilet seat A having the above structure, in the vicinity of the cord outlet of the toilet seat body 3, a thermistor (not shown) that detects the temperature of the heater and the toilet seat body and a cord connecting portion that also connects a controller (not shown) to the heater are not overheated. Since the preventive members (temperature fuse, temperature controller, etc.) are arranged in a narrow space, it is not possible to efficiently wire the heater in the vicinity, and as a result, the temperature distribution on the surface of the toilet seat body 3 is uneven. And the user may feel uncomfortable. Further, the bottom surface of the toilet seat body 3 to which the heater 2 is attached is covered with the bottom plate 4 and the toilet seat body 3 and the bottom plate 4 are joined and fixed by means of heat welding or the like. Since it is a fitting method, the joint portion 5 cannot be completely sealed, and a small gap may partially occur in the joint portion 5. If sewage adheres to or gets into this small gap, it cannot be removed even if the bottom plate 4 is wiped from the outside with a rag or the like, and over time, the sewage produces an offensive odor or the bottom plate 4 is soiled. The user was uncomfortable and unsanitary. Furthermore, since the heater 2 is attached to the metal foil sheet 1 in a state of line contact by heat welding, the heat of the heater 2 and the aging of the resin material,
Alternatively, when a part of the heater 2 or the metal foil sheet 1 is peeled off from the toilet seat body 3 due to an impact generated when the toilet seat body 3 falls down on the toilet bowl, the heat conduction of the heater 2 to the toilet seat body 3 is conducted. However, the heating function may be deteriorated. When manufacturing the heated toilet seat A, the heater 2 is heat-welded to the metal foil sheet 1, the metal foil sheet 1 is attached to the back side of the toilet seat body 3, and finally the bottom plate 4 is attached to the toilet seat body 3. Since most of the manufacturing process relies on manual work, it is not suitable for mass production, and special members such as metal foil sheets and bottom plates are required for manufacturing, and the manufacturing cost of heating toilet seat A is high. There was a drawback.

[Object of the Invention]

The present invention eliminates the above-mentioned drawbacks, improves the heat conduction of the heater to make the surface temperature of the toilet seat body almost uniform at any position, simplifies the structure, and makes it easy to clean the toilet seat and its economy. To provide a general manufacturing method.

[Outline of Invention]

According to the present invention, a toilet seat body is formed in a state of being divided into two parts, a lower seat plate and an upper seat plate, a heater and a thermistor for detecting the heater temperature are arranged on the surface of the lower seat plate, and the back face of the lower seat plate is provided. The lead wire of the heater and the lead wire of the thermistor are connected to a cord that is connected to the controller, and the cord is housed and fixed in the fitting groove for fitting the connection part, and the cord is attached to the lower seat plate in a watertight structure. In this state, from the front surface of the lower seat plate to a part of the back surface thereof, a resin having good fluidity is injection-molded and the upper seat plate is integrally molded with the lower seat plate to obtain a heated toilet seat. It is characterized by

Example of Invention

An embodiment of the present invention will be described below with reference to FIGS.

In FIGS. 1 and 2, B is the heated toilet seat of the present invention,
The heating toilet seat B is pivotally attached to a controller housing box 13 provided on the upper surface of the rear part of the toilet 12 by a hinge 14 (the hinge of the lid 11 is not shown) so that the lid 11 is superposed on the upper side thereof. Then, it is mounted on the toilet seat 12.

Next, the structure of the heated toilet seat B will be described. The heated toilet seat B is roughly classified into a lower seat plate 15a as shown in FIG.
And a toilet seat body 15 composed of an upper seat plate 15b and a heater 16 provided on the lower seat plate 15a.

First, as shown in FIG. 3, the horseshoe-shaped lower seat plate 15a forming one side of the toilet seat body 15 has a heater insertion groove 17 formed on the surface thereof in accordance with the wiring pattern of the heater 16.
The heater 16 is inserted, and the lead lines a and b shown in FIG. 4 are led out to the rear surface side through the two cutout holes 18 formed in parallel with the rear portion side (the upper side in FIG. 3) of the lower seat plate 15a. . Also, the lower seat plate
A thermistor 19 that contacts the heater 16 and detects the heater temperature at a predetermined position on the surface of the surface 15a (almost the center in the front-rear direction).
The temperature sensing part and the insertion groove 20a of the lead wire 20 thereof are respectively provided, and the temperature sensing part and the lead wire 20 are inserted into the insertion groove 20a as shown in FIG. And the heater 1
6 and the lead wire 20, the locking ribs (not shown) provided at the end edges of the insertion grooves 17 and 20a are deformed by heat to accommodate and fix the heater 16 in the insertion groove, and the lower seat plate 15a. Prevents floating on the surface. The lead wire 20 is a through hole.
It is inserted through 21 and led out in the same direction as the heater 16. Next, on the back surface of the lower seat plate 15a, as shown in FIGS.
As shown in the drawing, the first fitting grooves 22 and 22 'communicating with the cutout hole 18 through the lead wires a and b of the heater 16 and the through hole 21 through which the lead wire 20 of the thermistor 19 is led out. Second fitting groove 23
And a housing tube 24 projecting downwardly between the fitting grooves 22 and 23, and a convergence cord located at a rear end edge (on the second fitting groove side) of one side portion of the lower seat plate 15a. Insertion hole 25 and this insertion hole
A converging cord fitting groove 26 communicating with 25, and a third fitting groove 27 located between the converging cord inserting groove 26 and the first fitting groove 22 'are provided as recesses. The fitting groove and the insertion tube are communicated with each other by a code groove 28, and the fitting grooves 22, 22 ', 23, 27 are connected to the lead wires a, b of the heater 16, respectively.
The connecting portions d to g of the lead wire 20 of the thermistor 19 and the cord are respectively fitted and locked by a plurality of locking claws h protruding from the edge of each fitting groove. On the other hand, an insertion hole 30 of a horseshoe-shaped retaining ring 29 shown in FIG. 13 is opened in the middle of the convergence cord insertion hole 25, and this retaining ring 29 of the cord bush 32 fitted to the convergence cord 31. The convergence cord (31) inserted in the cord insertion hole (25) by engaging with the engagement groove (33) cut in the body portion is prevented from being pulled out. Further, when the convergent cord 31 is inserted, as shown in FIG. 6, the convergent cord 31 is inserted through the O-ring 34 at the innermost portion of the cord insertion hole 25. On the other hand, in the overheating prevention device storage cylinder 24, as shown in FIG.
As shown in FIG. 12, the overheat preventive device 35 is housed, the cords 37, 37 ′ are connected to the terminal portions 36, 36 ′ thereof, and the support lid 38 is press-fitted from the open end of the housing cylinder 24. The fall prevention device 35 is prevented from falling off. At this time, as shown in FIG.
The terminal portions 36, 36 'and the lead-out holes 39 for pulling out the cords 37, 37' are notched, and at the position corresponding to the lead-out hole 39 of the storage cylinder 24, as shown in FIG. Since the through hole 40 is provided, the cords 37 and 37 'can be easily pulled out even when the storage cylinder 24 is closed by the support lid 38.

The lower seat plate 15a has an insertion groove 1 for the heater 16 on the surface.
7, the thermistor 19 lead wire insertion groove 20a, on the back side of each fitting groove 22,22 ', 23,26,27, convergence cord insertion hole 25, overheat prevention device
A molded product made of synthetic resin so as to have 35 storage cylinders 24, code grooves 28, etc. is used.

As for the upper seat plate 15b, as shown in FIGS. 3 and 4, after the necessary parts for the heating toilet seat are attached to the lower seat plate 15a, the same quality as the lower seat plate 15a extends from the front surface to a part of the back surface. By injection molding a synthetic resin made of a material, as shown in FIGS. 9 to 11, it can be integrally formed with the lower seat plate 15a. In the figure, 41 is a rubber contact piece mounted at a predetermined position on the back surface of the lower seat plate 15a, and 42 is a convergence cord 31.
Are the four cords that make up.

Next, the case of assembling the heated toilet seat B of the present invention will be described.

First, the heater 16 is inserted into the insertion groove 17 provided on the surface of the lower seat plate 15a, and then the temperature sensing portion is provided in the insertion groove 20a provided in parallel with the heater insertion groove 17 at a predetermined position of the lower seat plate 15a. Heater 1
The lead wire 20 of the thermistor 19 is inserted in parallel with a part of the heater 16 while being in contact with 6. After this, insert grooves 17, 20a
A locking rib (not shown) provided on the edge of the heater is deformed by a heating tool to prevent the heater 16 and the lead wire 20 from floating on the surface of the lower seat plate 15a. The lead wires a and b of the heater 16 are led out to the rear surface of the lower seat plate 15a through the cutout hole 18 and the lead wire 20 through the through hole 21, respectively. In this state, the lower seat plate 15a is turned over. Next, as shown in FIGS. 4 and 6, the lower seat plate 15a
Into the cord insertion hole 25 of the above, four cords 42 are pulled out from the tip for a required length, and a convergence cord 31 in which a cord bush 32 is fitted around the base is fitted, and an O-ring 34 is fitted in the convergence cord 31 at the tip of the cord bush 32. The converged cord 31 is inserted in the inserted state, the tip end of the convergent cord 31 is inserted into the convergent cord insertion groove 26, and the cord bush 32 is press-fitted into the insertion hole 25 through the O-ring 34. In this state, the retaining ring 29 is inserted through the retaining ring insertion hole 30 so as to be orthogonal to the converging cord 31 and press-fitted into the converging cord inserting hole 25, and is engaged with the engaging groove 33 of the cord bush 32. It prevents the plate 15a from coming off, and the O-ring through the code bush 32.
The insertion hole 25 is held in a watertight structure by pressing 34 into the innermost portion of the convergence cord insertion hole 25. Subsequently, the four cords 42 led out from the tip of the convergent cord 31 inserted into the convergent cord insert groove 26 of the lower seat plate 15a pass through the respective cord grooves 28, and the first to third fitting grooves 22, 22 ', As shown in FIG. 4, the cord 42 connected to the lead wire 23 of the heater 16 and connected to the lead wire a of the heater 16 is connected to the lead wire a by a connection terminal, and the connection portion d thereof is connected to the first fitting part. Insert into the groove 22. Also, the thermistor
The cord 42 connected to the lead wire 20 of 19 is also connected to the lead wire 20 by using the connection terminal in the same manner as described above, and the connecting portions f thereof are fitted into the second fitting grooves 23, respectively. Further, a cord 42 connected to the overheat prevention device 35 stored in the overheat prevention device storage tube 24.
Is the cord 37 connected to one terminal 36 of the overheat protector 35.
To the third fitting groove 27, and the connecting portion g is fitted into the third fitting groove 27. The other terminal of the overheat protector 35
The cord 37 'connected to 36' is connected to the lead wire b of the heater 16 using a connecting terminal, and the connecting portion e is connected to the first fitting groove 2
Insert in 2 '. The connecting portions d to f of the cord 42 fitted in the fitting grooves 22, 22 ', 23, 27 and the convergence cord 31 inserted in the convergence cord insertion groove 26 are respectively the fitting grooves 22, 22'. ,
Since it is locked by 23 and 27 and the locking claw h provided in the convergence cord insertion groove 26, there is no fear of pulling out.

After attaching the heater 16, the thermistor 19, the convergence code 31, and the overheat preventive device 35 to the lower seat plate 15a as described above,
As shown in FIGS. 14 and 15, the lower seat plate 15a is housed in the molding dies 43 and 44 of the injection molding apparatus, and the inlet of the molding dies 43 and 44 (the lower seat plate 15a in this embodiment is used). The rear side) 45 is injected with a good-flowing synthetic resin into the space 46 between the molding dies 43, 44 and the lower seat plate 15a, from the surface of the lower seat plate 15a to a part of the rear lower surface thereof. By injection-molding the upper seat plate 15b, the heater 16 on the surface of the lower seat plate 15a, the fitting grooves 22, 22 ', 23, 27 on the back surface, the overheating prevention device storage cylinder 24, etc.
As shown in FIGS. 9 and 10, all are embedded in the resin layer forming the upper seat plate 15b and are not exposed to the outside. The assembly of the heated toilet seat B is completed by injection molding the upper seat plate 15b.

 Next, the usage state of the heated toilet seat B will be described.

The convergence code 31 derived from the heating toilet seat B is connected to the controller 47 shown in FIG. Then, the power source terminal 48 is connected to a power source (not shown) to energize the heater 16 to heat the surface of the toilet seat body 15. When the temperature of the heater 16 rises and falls to a predetermined set temperature, the temperature is detected by the thermistor 19 and the energization of the heater 16 is controlled to keep the surface temperature of the toilet seat body 15 constant. The set temperature of the heater 16 is adjusted by rotating the knob 50 of the variable resistor 49.

〔The invention's effect〕

Since the present invention is configured as described above,
It has the following effects.

(1) In the heating toilet seat of the present invention, only the heater and the thermistor are attached to the surface of the lower seat plate, and all the members such as the heater and the thermistor, such as the cord connecting portion, and the overheat preventive device are the lower seat. Since the structure is attached to the back side of the plate, the wiring of the heater can be efficiently performed, and the surface of the heated toilet seat can be heated at almost the same temperature at any position.

(2) In the heating toilet seat of the present invention, the heater is inserted into the insertion groove provided on the surface of the lower seat plate, and the connecting portion between the heater and the cord is inserted into the fitting groove provided on the back surface of the lower seat plate. Since all the heaters and their connecting portions are held by the fixing means so as not to move, members such as the heater move due to the injection pressure during the injection molding of the upper seat plate, which impairs the function of the heating toilet seat. Accidents can be prevented, and all that is required is to insert all parts such as the heater and the connection with the cord into the groove for the assembly work, and then injection-mold the upper seat plate.
When manufacturing a heated toilet seat, the work of sticking the heater to the metal foil sheet, attaching this sheet to the back of the toilet seat body, and attaching the bottom plate to the bottom of the toilet seat body as in the past Since it becomes unnecessary altogether and most of the heating toilet seat production can be mechanized, the productivity can be improved.

(3) Further, in the heated toilet seat of the present invention, since the lower seat plate and the upper seat plate are integrally formed by molding,
Dirty water never enters the toilet seat, and the convergence cord is watertightly inserted and held in the cord insertion hole, and is fixedly supported by the snap ring so as not to be pulled out from the cord insertion hole. Since the vicinity of the cord insertion hole is completely surrounded by the resin layer forming the upper seat plate, it is possible to satisfactorily seal the cord insertion hole of the convergence cord, and it is easy even for a heated toilet seat with a built-in electric component. It can be washed with detergent and the like, and the heated toilet seat can be used completely and hygienically for a long time.

As described above, the present invention has a number of excellent practical effects because it has a simple structure, can be manufactured economically, and can be easily cleaned without damaging the electric parts.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of the heated toilet seat of the present invention,
FIG. 2 is a plan view, FIG. 3 is a plan view of a lower seat plate, FIG. 4 is a cutaway rear view of an essential part showing a main part of the heating toilet seat by cutting out a part thereof, and FIG. 5 is an electric circuit diagram. , FIG. 6 is C- of FIG.
Sectional view taken along the line C, FIG. 7 is a rear view showing the main part of the lower seat plate, and FIG. 8 is a sectional view taken along the line DD of FIG.
The drawing is a sectional view taken along the line EE of FIG. 4, FIG. 10 is a sectional view taken along the line FF of FIG. 4, and FIG. 11 is a sectional view taken along the line GG of FIG. FIG. 12, FIG. 12 is a sectional view taken along line HH of FIG. 9, FIG. 13 is a sectional view taken along line II of FIG. 6, and FIG.
Fig. 15 and Fig. 15 are explanatory views showing the manufacturing of the heated toilet seat, and Fig. 16 is a vertical sectional view showing the main part of the conventional heated toilet seat. 11 …… Toilet seat body, 15a …… Lower seat plate 15b …… Upper seat plate, 16 …… Heater 22,22 ′, 23,26,27 …… Mating groove 29 …… Stop ring, 31 …… Convergence code 34 …… O-ring, 35 …… Overheat protector 37,42 …… Code

(72) Inventor Takehiro Yokoyama 1 Aichi-cho, Kasugai-shi, Aichi Aichi Electric Co., Ltd. (72) Inventor Yasuhiro Hiratsuka 1 Aichi-cho, Kasugai-shi, Aichi Aichi Electric Co., Ltd. Inspector, Manabu Miwa (56) References JP-A-58-124417 (JP, A) JP-A-62-197021 (JP, A) Actual opening 61-13685 (JP, U) Actual opening Sho-55-133900 (JP, U)

Claims (2)

[Claims] 1. A lower seat plate and an upper seat plate, wherein the lower seat plate has an insertion groove formed on its surface for inserting the lead wires of the heater and the thermistor, and the lead wire of the heater and the thermistor is inserted in the insertion groove. Convergence cords containing multiple cords are watertightly inserted and fixed in the cord insertion holes provided on the back surface of the lower seat plate, and each cord of this convergence cord and the heater lead wire and thermistor The connection part with the lead wire is inserted and fixed in the fitting groove recessed in the back surface of the lower seat plate, and the synthetic resin is injection-molded from the front surface of the lower seat plate to the cord connection part of the back surface. A heated toilet seat having an upper seat plate integrally formed on the top. 2. An insertion groove for inserting the heater and thermistor lead wires on the front surface, and a fitting groove on the back surface for inserting and holding a connecting portion between the heater and thermistor lead wires and each cord in the convergent cord. The step of molding the respective lower seat plate with synthetic resin, the step of inserting the heater and thermistor lead wires into the insertion groove of the lower seat plate, the heater and thermistor lead wires on the back surface of the lower seat plate, etc. A step of connecting a member and each cord of the convergent cord and inserting the connecting portion into a fitting groove; and a base portion of the convergent cord at a side of the lower seat plate, an O ring and a snap ring to form the lower seat plate. A heating step characterized in that it comprises a step of supporting it in a watertight manner so that it will not come off, and a step of injection-molding a synthetic resin on the surface of the lower seat plate to integrally form the upper seat plate on the lower seat plate. How to make a toilet seat .