JPH1023992A - Toilet seat unit - Google Patents

Abstract

(57) [Problem] The present invention relates to a toilet seat unit used in a toilet. A special device is required for welding and joining a toilet seat surface plate and a toilet seat back plate, and partial welding failure occurs. Insufficient sealing or strength variation occurs. Toilet seat surface plate (1) and toilet seat back plate (2) formed by continuous injection of molten resin into a cavity
Has a hollow portion in at least a part thereof, a single convex rib portion 5 is provided on an inner peripheral portion and an outer peripheral portion of one of the toilet seat surface plate 1 and the toilet seat back plate 2, and the other inner peripheral portion is provided. And a concave groove portion 6 fitted to the convex rib portion 5 on the outer peripheral portion, and a sealing material 7 is mounted in this groove, and the convex rib portion 5
This is a toilet seat unit in which a watertight structure is formed by fitting and assembling the concave groove 6 with the groove. With this configuration, it is possible to obtain a toilet seat unit excellent in assembling property, sealing property, serviceability, and the like without using a special device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet seat unit used in a toilet.

[0002]

2. Description of the Related Art A conventional toilet seat unit is usually formed of an acrylonitrile-butadiene-styrene copolymer (hereinafter abbreviated as ABS), and as shown in FIG. The toilet seat is composed of a face plate 1, a toilet seat back plate 2, and a heater unit 11. For example, the heater unit is attached to the toilet seat surface plate, and the convex ribs provided on the inner and outer peripheral portions of the toilet seat surface plate 1 are attached to the toilet seat back plate 2. Fit and assemble into the concave grooves provided on the inner and outer circumferences,
It was configured to be integrally joined by ultrasonic vibration welding or heat welding.

[0003]

However, in the above-mentioned conventional construction, a special device is required for welding and joining the toilet seat surface plate and the toilet seat back plate. Further, welding failure may occur partially due to poor fitting between the toilet seat surface plate and the toilet seat back plate due to sink, warpage, deformation, or the like at the time of injection molding, resulting in poor sealing or uneven strength. Further, in the case of heat welding, there is a problem that the working environment is deteriorated such as heat dissipation and odor dissipation due to heating and melting.

[0004] In addition, after disassembly, it cannot be further disassembled and cannot be service-repaired. Therefore, in the case of failure of internal components such as the heater unit, replacement and repair of the entire heating unit is required. There were problems such as loss.

Further, the toilet seat unit made of ABS is not good in chemical resistance, and may cause solvent cracks in some toilet cleaners.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and at least a part of a toilet seat surface plate and a toilet seat back plate formed by continuous injection of molten resin into a cavity is hollow. A single convex rib is provided on the inner peripheral portion and the outer peripheral portion of one of the toilet seat surface plate and the toilet seat back plate, and the convex rib is fitted on the other inner peripheral portion and the outer peripheral portion. A toilet seat unit having a concave groove that fits therein, a sealing material attached to the groove, and the convex rib and the concave groove fitted and assembled to constitute a watertight box.

According to the above-mentioned invention, a toilet seat unit excellent in assembling property, sealing property and serviceability can be economically obtained without using a special device.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a toilet seat surface plate or a toilet seat back plate formed by continuous injection of molten resin in a cavity, and at least a part of the toilet seat surface plate or the toilet seat back plate. One of the inner peripheral portion or the outer peripheral portion has a single convex rib, the other inner peripheral portion or the outer peripheral portion has a concave groove fitted to the convex rib, and a sealing material attached to the concave groove. The convex seat and the concave groove are fitted and assembled to form a watertight box.

Injection of the molten resin into the cavity. Then, deformation, warping, sinking, dimensional accuracy, etc. of the toilet seat surface plate and the toilet seat back plate are improved by the hollow portion formed by gas injection. The fitting with the groove becomes more accurate, and a uniform and excellent all-round watertight fitting is completed.

In addition, a hollow portion is formed in at least a part of a toilet seat surface or a toilet seat back plate formed by continuously injecting molten resin in the cavity, and an inner peripheral portion or an outer periphery of any one of the toilet seat surface or the toilet seat back plate. A plurality of convex ribs and concave grooves alternately provided on the portion, and a plurality of concave grooves and convex ribs which are fitted on the other inner peripheral portion and outer peripheral portion relative to the convex ribs and the concave grooves. And a sealing member mounted in the concave groove, and the convex rib and the concave groove are fitted and assembled to form a watertight box body.

[0011] By fitting the plurality of convex ribs and the concave grooves, an extremely excellent all-round watertight fitting is completed.

Further, a hollow portion is formed in at least a part of the toilet seat surface plate or the toilet seat back plate formed by continuously injecting the molten resin in the cavity, and an innermost peripheral portion is formed in an inner peripheral portion and an outer peripheral portion of the toilet seat surface plate. The outermost wall has an outer wall higher than the inner wall, and further has a plurality of alternately provided concave grooves and convex ribs. On the other hand, the inner and outer peripheral portions of the toilet seat back plate are provided with the toilet seat. It has a plurality of concave grooves and convex ribs to be fitted to the convex ribs and concave grooves of the surface plate, and a seal material attached to the concave grooves. The convex rib and the concave grooves are fitted and assembled. And a watertight box.

[0013] A plurality of concave grooves and convex ribs are alternately provided with the innermost and outermost peripheral portions of the inner and outer peripheral portions of the toilet seat surface plate as concave grooves, and the outer wall of the concave groove is separated from the inner wall by the inner wall. On the other hand, a plurality of grooves and ribs are alternately provided on the inner peripheral portion and the outer peripheral portion of the toilet seat back plate so as to fit into the convex ribs and the concave grooves of the toilet seat surface plate, thereby invading from outside. Draining of water can be easily performed, and the sealing property and the dirt adhesion preventing property can be improved.

Further, the toilet seat unit has at least one of the toilet seat surface plate and the toilet seat back plate formed of a highly crystalline polypropylene resin.

Since the highly crystalline resin has very good chemical resistance, it is not attacked by ordinary toilet cleaners.
No worry about solvent cracks. In addition, it is easy to clean and clean because it does not require a cleaning agent.

Further, the hollow portion of the toilet seat surface plate or the toilet seat back plate is a toilet seat unit formed by injecting a molten resin into the cavity and subsequently injecting nitrogen gas.

By injecting nitrogen gas as an inert gas, deformation, warping, sink, dimensional accuracy, etc. are improved without worrying about burns on the toilet seat surface plate and the toilet seat back plate. The fitting with the concave groove becomes more accurate.

The hollow portion of the toilet seat surface plate and the toilet seat back plate is a toilet seat unit formed by injecting molten resin into the cavity and then injecting air.

The injection of air improves the deformation, warpage, sink or dimensional accuracy of the toilet seat surface plate and the toilet seat back plate at the time of injection molding easily and economically. Is more accurate.

Further, at least one pair of the concave groove and the convex rib fitting portion is a toilet seat unit which is fitted and abutted with a gap.

Since there is a fitting gap between the concave groove and the convex rib, an appropriate seal thickness is ensured, and a more excellent watertight fitting around the entire circumference is completed.

A toilet seat unit in which a heater unit is housed in a watertight box space formed by fitting a toilet seat surface plate and a toilet seat back plate.

By storing the heater unit in the toilet seat unit, it is possible to heat the surface of the toilet seat unit, and it is particularly comfortable for use in winter.

Further, the toilet seat unit uses a sealing material made of an elastic packing such as rubber. The toilet seat unit uses a liquid caulking material as a sealing material.

Further, at least a part of the toilet seat surface plate and the toilet seat back plate formed by continuously injecting the molten resin into the cavity has a hollow portion, and one of the toilet seat surface plate and the toilet seat back plate is provided. A convex rib is provided on the inner peripheral portion or the outer peripheral portion, and a concave groove is fitted and assembled on the other inner peripheral portion or the outer peripheral portion, and the inner periphery of the toilet seat surface plate and the toilet seat back plate,
This is a toilet seat unit provided with a plurality of pawl fitting locking portions along the inner surface of the outer fitting portion.

[0026] By providing a plurality of pawl engagement locking portions along the inner surfaces of the inner and outer fitting portions of the toilet seat surface plate and the toilet seat back plate, the fitting between the toilet seat surface plate and the toilet seat back plate is achieved. Is more reliable, and the watertightness of the entire circumference is increased.

The pawl fitting / locking section is a toilet seat unit having a convex pawl portion provided on a toilet seat back plate and a concave pawl receiving portion provided on a toilet seat surface plate.

An embodiment of the toilet seat unit of the present invention will be described below with reference to the drawings. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 1, reference numeral 1 denotes a toilet seat surface plate, and reference numeral 2 denotes a toilet seat back plate. A toilet seat unit is formed by storing components such as a heater 11 therein and integrally assembling them.

In FIGS. 2 and 3, the concave grooves 3 provided on the inner and outer peripheral surfaces of the toilet seat surface plate 1 correspond to the convex rib portions 4 provided on the inner and outer peripheral surfaces of the toilet seat back plate 2. The convex rib portions 5 provided on the inner peripheral surface and the outer peripheral surface of the toilet seat surface plate 1 are fitted with the concave groove portions 6 provided on the inner peripheral surface and the outer peripheral surface of the toilet seat back plate 2, respectively. Are combined. Here, a hollow portion 10 is formed in each of the inner peripheral portion and the outer peripheral portion of the toilet seat surface plate 1 and the toilet seat back plate 2, and by ensuring the dimensional accuracy of the toilet seat surface plate 1 and the toilet seat back plate 2 and preventing deformation, Excellent fitting properties are ensured.

The toilet seat surface plate 1 and the toilet seat back plate 2 are provided with a plurality of grooves and ribs. After the face plate 1 and the toilet seat back plate 2 are fitted and assembled, a watertight box body is formed to the outside. Further, as shown in FIG. 4, the size of the seal portion is regulated by the rib 4 and groove 3 fitting portions on the outer peripheral portion so as to fit with a fitting gap for securing an appropriate seal thickness. Here, as the sealing material 7, an elastic packing such as rubber or a liquid caulking material having elasticity after curing such as silicon or epoxy can be used.

Numeral 8 denotes an elastic convex pawl disposed along a fitting portion of the toilet seat back plate 2 on the inner periphery and the outer periphery of the toilet seat surface plate 1, and a concave portion provided on the inner surface of the toilet seat surface plate 1. Nail receiving part 9
It is configured to be fitted and locked to the.

(Example 1) ABS was injected under the following conditions and continuously injected into the cavity.

Injection cylinder temperature 230 ° C. Injection pressure 500 kg / cm ² Injection filling time 5 seconds Mold temperature 40 ° C. After injection of the molten ABS, nitrogen gas is injected into the cavity under the following conditions as a hollow part forming fluid and held. After the expiration of the time, the toilet seat surface plate 1 was formed. Further, the toilet seat back plate 2 was formed under the same conditions.

Equilibrium pressure: 40 kg / cm ² Holding time: 60 seconds A hollow portion 10 is formed in each of the inner peripheral portion and the outer peripheral portion of the injection-molded toilet seat surface plate 1 and the toilet seat back plate 2. It was not recognized, the dimensional accuracy was good, and the fitting property was very excellent.

The toilet seat back plate 2 and the toilet seat back plate 2 were fitted and assembled using silicone resin as the sealing material 7 in the groove 6 of the toilet seat back plate 2. Since the fitting property between the toilet seat surface plate 1 and the toilet seat back plate 2 was good, the water tightness of the formed box was very good.

Example 2 A highly crystalline PP resin having a crystallinity of 65% was continuously injected into a cavity under the following conditions.

Injection cylinder temperature 200 ° C. Injection pressure 500 kg / cm ² Injection time 5 seconds Mold temperature 40 ° C. After injection of the molten high crystalline PP resin, nitrogen gas is injected into the cavity under the following conditions as a hollow part forming fluid. And
After the holding time expired, the toilet seat face plate 1 was formed. Further, the toilet seat back plate 2 was formed under the same conditions.

Equilibrium pressure 60 kg / cm ² Holding time 60 seconds Injection-molded toilet seat surface plate 1 and toilet seat back plate 2 have hollow portions 10 formed in the inner and outer peripheral portions, respectively. It was not recognized, the dimensional accuracy was good, and the fitting property was very excellent.

A silicone resin is used as a sealing material in the groove 6 of the toilet seat back plate 2, and the toilet seat surface plate 1 and the toilet seat back plate 2 are fitted and assembled. Since the fitting property between the toilet seat surface plate 1 and the toilet seat back plate 2 was good, the water tightness of the formed box was very good.

Further, since it is formed of highly crystalline PP, it is not affected by ordinary cleaning agents, and a strong cleaning agent can be used.

Comparative Example 1 ABS was continuously injected into a cavity under the following conditions to form a toilet seat surface plate. In addition,
Nitrogen gas for forming the hollow portion was not used. Further, a toilet seat back plate was formed under the same conditions.

Injection cylinder temperature 230 ° C. Injection pressure 500 kg / cm ² Injection filling time 5 seconds Die temperature 40 ° C. The interior of each of the toilet seat surface plate and the toilet seat back plate was completely filled with ABS. On the toilet seat surface plate and toilet seat back plate, sink, warpage, and deformation were clearly observed, and shrinkage of about 0.5% in size was also observed. As a result, a problem occurred in the fitting of the two, and the formed box had poor water tightness.

[0044]

As described above, the toilet seat unit of the present invention has the following effects.

(1) Since the toilet seat surface plate or the toilet seat back plate has a hollow portion, sink marks, warpage, and deformation are small, and dimensional accuracy is good. Therefore, the fitting between the convex rib and the concave groove becomes accurate, and uniform and reliable sealing performance can be obtained.

(2) Since the joint between the toilet seat surface plate and the toilet seat back plate is fitted over the entire circumference of the concave groove and the convex rib via the sealant, a reliable watertight seal can be obtained.

(3) A plurality of grooves and ribs are fitted.
At least a pair of inner grooves and rib fitting parts are dimensioned by ribs and groove fitting parts on the outer peripheral part so as to provide a gap for securing an appropriate seal thickness and to be fitted and abutted, so that reliability is improved. High sealing performance can be secured. Further, even when the caulking seal material is applied to the groove, the seal material is not exposed on the outer surface, and a beautiful and reliable sealing property can be obtained.

(4) A plurality of concave grooves and convex ribs are provided alternately with the innermost and outermost peripheral portions of the inner and outer peripheral portions of the toilet seat surface plate as concave grooves, and the outer wall of the concave groove is formed as the inner wall. By increasing the height, and alternately providing a plurality of grooves and ribs on the inner peripheral portion and the outer peripheral portion of the toilet seat back plate so as to fit into the convex ribs and the concave grooves of the toilet seat surface plate, intrusion from the outside. Draining of water can be easily performed, and the sealing property and the dirt adhesion preventing property can be improved.

(5) The toilet seat surface plate and the toilet seat back plate are connected by a plurality of pawl fitting locking portions provided along the inner surfaces of the inner and outer fitting portions of the toilet seat surface plate and the toilet seat back plate. Since they are integrally connected, no special connecting device is required, and the disassembly service and maintenance after the connection can be easily performed.

(6) Since the toilet seat surface plate and the toilet seat back plate are made of highly crystalline PP, chemical resistance is improved, a strong cleaning agent can be used, and cleanliness can be easily secured.

[Brief description of the drawings]

FIG. 1 is a configuration perspective view of a toilet seat unit according to an embodiment of the present invention.

FIG. 2 is a perspective view of a fitting portion of the toilet seat unit of the embodiment.

FIG. 3 is a configuration diagram of a fitting cross section of the toilet seat unit of the embodiment.

FIG. 4 is an enlarged cross-sectional view of the fitting seal portion of the embodiment.

FIG. 5 is a sectional view of the configuration of a conventional toilet seat unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toilet seat surface plate 2 Toilet seat back plate 3 Concave groove part 4 Convex rib part 5 Convex rib part 6 Concave groove part 7 Seal material 8 Nail part 9 Nail receiving part 10 Hollow part 11 Heater unit

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location // B29C 65/56 B29C 65/56 B29L 22:00 31:44

Claims (12)

[Claims] A hollow portion formed in at least a part of a toilet seat surface plate or a toilet seat back plate formed by continuously injecting a molten resin into a cavity; and an inner peripheral portion of one of the toilet seat surface plate and the toilet seat back plate. Or having a single convex rib on the outer peripheral portion, a concave groove fitted to the convex rib on the other inner peripheral portion or outer peripheral portion, and a sealing material attached to the concave groove,
A toilet seat unit in which the convex rib and the concave groove are fitted and assembled to form a watertight box. 2. A hollow portion in at least a part of a toilet seat surface plate or a toilet seat back plate formed by continuously injecting molten resin in a cavity, and an inner peripheral portion of one of the toilet seat surface plate or the toilet seat back plate. Or a plurality of convex ribs and concave grooves alternately provided on the outer peripheral portion, and a plurality of concave grooves and convexes which are fitted on the other inner peripheral portion or outer peripheral portion relative to the convex ribs and the concave grooves. A toilet seat unit comprising: a convex rib; and a sealing material attached to the concave groove, wherein the convex rib and the concave groove are fitted and assembled to form a watertight box. 3. A hollow portion in at least a part of a toilet seat surface plate or a toilet seat back plate formed by continuously injecting molten resin in a cavity, and an innermost peripheral portion of an inner peripheral portion and an outer peripheral portion of the toilet seat surface plate. The outermost wall has an outer wall higher than the inner wall, and further has a plurality of alternately provided concave grooves and convex ribs. On the other hand, the inner and outer peripheral portions of the toilet seat back plate are provided with the toilet seat. It has a plurality of concave grooves and convex ribs to be fitted to the convex ribs and concave grooves of the surface plate, and a seal material attached to the concave grooves. The convex rib and the concave grooves are fitted and assembled. Toilet seat unit with a watertight box. 4. The toilet seat unit according to claim 1, wherein at least one of the toilet seat surface plate and the toilet seat back plate is formed of a highly crystalline polypropylene resin. 5. The toilet seat unit according to claim 1, wherein the hollow portion of the toilet seat surface plate or the toilet seat back plate is formed by injecting a molten resin into the cavity and subsequently injecting nitrogen gas. . 6. The toilet seat unit according to claim 1, wherein the hollow portion of the toilet seat surface plate or the toilet seat back plate is formed by injecting molten resin into the cavity and subsequently injecting air. 7. The toilet seat unit according to claim 1, wherein at least a pair of concave grooves and convex rib fitting portions are fitted and abutted with a gap provided. 8. The toilet seat unit according to claim 1, wherein the heater unit is housed in a watertight box space formed by fitting the toilet seat surface plate and the toilet seat back plate. 9. The toilet seat unit according to claim 1, wherein the sealing material is an elastic packing such as rubber. 10. The toilet seat unit according to claim 1, wherein the sealing material is a liquid caulking material. 11. A toilet seat surface plate and a toilet seat back plate formed by continuous injection of molten resin into a cavity have a hollow portion in at least a part of the toilet seat surface plate and the toilet seat back plate. A convex rib is provided on the inner peripheral portion or the outer peripheral portion, and a concave groove is fitted and assembled on the other inner peripheral portion or the outer peripheral portion, and the inner surfaces of the inner and outer peripheral fitting portions of the toilet seat surface plate and the toilet seat back plate. Toilet seat unit provided with a plurality of pawl fitting and locking portions along. 12. The toilet seat unit according to claim 11, wherein the pawl fitting / locking portion has a convex pawl portion provided on a toilet seat back plate and a concave pawl receiving portion provided on a toilet seat surface plate.