JP2009197506A - Toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin toilet bowl assemblable and fixable easily, firmly, and accurately. <P>SOLUTION: This synthetic resin toilet bowl 1 comprises a skirt section 2, a bowl section 3, and a rim section 4. A joining step part 22 formed of an upper step part 221 and a lower step part 222 is formed stepwise at the inner peripheral edge of the upper end part 21 of the skirt section 2. An upwardly projecting supporting/projecting piece 31 and a joining projecting piece 32 projecting outward from the outer peripheral surface positioned slightly below the top surface of the supporting/projecting piece 31 are formed at the upper end edge of the bowl section 3. A downward projecting weld projecting piece 41 is formed on the lower surface of the rim section 4. The joining projecting piece 32 of the bowl section 3 is placed on and affixed to the lower step part 222 of the skirt section 2. A bottomed groove part 5 is formed between the upper end 21 of the skirt section 2 and the supporting/projecting piece 31 of the bowl section 3. The weld projecting piece 41 of the rim section 4 is welded to the bottomed groove part 5 while vibrating. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a toilet bowl made of synthetic resin mainly composed of a skirt part, a bowl part, and a rim part, and more particularly to a toilet bowl that can be easily integrated and obtain sufficient strength. is there.

  A general flush toilet was entirely formed of ceramics, but it was prone to deformation and cracking during molding, and the product shape could not be complicated.

  In addition, there was a simple toilet bowl that was integrally formed of synthetic resin. However, since this integrated toilet bowl is molded with a mold, a wash water flow path for the water to wash the inner surface of the bowl portion is provided in the rim portion and the bowl. There was a problem that the toilet bowl formed in the section was difficult to manufacture.

For this reason, as shown in Patent Document 1 below, after the skirt, bowl and rim constituting the toilet bowl made of synthetic resin are formed in advance, these three members are fixed to each other with an adhesive or the like. There was a toilet that was integrated.
JP 2007-224593 A

  However, in the toilet bowl according to the conventional example, since there are a plurality of joint portions of the three members, the divided bodies are firmly and firmly fixed at the same time as designed, and there is no gap that causes water leakage or the like. To make a toilet bowl, advanced technology and a lot of manufacturing time were required.

  FIG. 4 of the present application is a partial cross-sectional perspective view showing a positional relationship when the above three conventional members are fixed. As shown in the figure, when assembling a toilet with the three members fixed to each other, at least two of the joints between the skirt part a and the rim part b and the joints between the rim part b and the bowl part c are fixed. For this reason, a dedicated jig for positioning each member has been used, but the strength may not be sufficient. In particular, when the above-mentioned joining points are fixed with an adhesive, it is necessary to bond and fix the respective points at the same time, and it is necessary to use advanced techniques to fix the members accurately as designed without gaps.

  The present invention has been made in view of the above-mentioned background art, and its purpose is a toilet bowl made of a synthetic resin composed of a skirt part, a bowl part and a rim part, which is simply, firmly and accurately assembled. To provide a toilet bowl that can be secured.

  In order to solve the above problems, a toilet according to the first aspect of the present invention is a toilet bowl made of a synthetic resin comprising a skirt portion, a bowl portion, and a rim portion. A stepped portion formed of a step portion and a lower stepped portion is formed in a stepped shape, and a support protrusion protruding upward at the upper edge of the bowl portion and an outer peripheral surface located slightly below the top surface of the support protrusion Forming a projecting protrusion protruding outward, forming a welding protrusion protruding downward on the lower surface of the rim, and mounting and fixing the bonding protrusion of the bowl to the lower step of the skirt; A bottomed groove portion is formed between the upper end portion of the skirt portion and the support projection piece of the bowl portion, and further, the welding projection piece of the rim portion is vibration welded to the bottomed groove portion.

  According to the second aspect of the present invention, in the toilet of the first aspect, the positioning engagement portion is formed on the lower step portion of the skirt portion, and the positioning engagement portion is formed on the lower surface of the joining protrusion piece of the bowl portion. The positioning engaging portions are engaged with each other.

  In the toilet according to the first aspect of the present invention, when the main three members of the skirt, bowl, and rim constituting the toilet are assembled and fixed together, the rim is attached to the already fixed skirt and bowl. Since the vibration welding work can be performed with a time shift from the fixing work, the fixing assembly work of the main three members is performed. It can be performed accurately with high dimensional accuracy.

  Further, since the skirt portion and the bowl portion are fixed in advance as described above, they can be fixed regardless of the rim portion, and the positioning of the both becomes easy.

  Further, when the rim portion is fixed to the already fixed skirt portion and the bowl portion, the welding protrusion piece of the rim portion is inserted into the bottomed groove portion formed between the upper end portion of the skirt portion and the support protrusion piece of the bowl portion. Since both of them are vibration welded in a state where they are fitted and contacted, the rim portion after vibration welding is positioned and fixed to the upper end portion of the skirt portion, the support projecting piece of the bowl portion, and the bottomed groove portion. The relative positional relationship between the three members is accurate and strong.

  Further, since the welding projection piece of the rim portion remains in the bottomed groove portion after welding, so-called burrs or the like are not generated on the outer surface of the joint portion, and the appearance of the joint portion is finished beautifully.

  Further, the joint portion of the main three members has an uneven surface, and the joint strength is large and the structure is stable as compared with the conventional flat joint (see FIG. 4).

  Furthermore, since the three main members are fixed to each other at one place, the strength is stable and the rigidity is increased.

  The toilet according to the second aspect of the present invention has the above-described configuration, and in particular, the positioning engagement portion is formed on the lower step portion of the skirt portion, and the positioning engagement portion is also formed on the lower surface of the joining projection piece of the bowl portion. And the two positioning engaging portions are fixed to each other, and therefore, the positional fixing does not occur until the fixing state by the adhesive is stabilized, and the fixing can be performed with high accuracy.

  In addition, since the positioning engaging portions are engaged with each other, it is possible to prevent the fixing state between the skirt portion and the bowl portion from deteriorating when the welding projection piece of the rim portion is vibration welded to the bottomed groove portion.

  Furthermore, even if the adhesive force is deteriorated due to secular change or unexpected impact, the positioning engaging portions are engaged with each other, so that a positional deviation occurs between the skirt portion and the bowl portion for many years. Hateful.

  Embodiments of a heat insulating structure for a casing according to the present invention will be described below with reference to the drawings. FIG. 1 is an assembly side sectional view showing an outline of a toilet of the present invention, and FIG. 2 is an assembly process explanatory diagram of a first embodiment of the toilet of the present invention. In the figure, 1 is a toilet bowl made of synthetic resin, and the toilet bowl 1 is formed by fixing and integrating three members of a skirt portion 2, a bowl portion 3 and a rim portion 4.

  FIG. 2 (a) is a partial cross-sectional view showing the positional relationship of the skirt portion 2, the bowl portion 3 and the rim portion 4 before bonding at a joint portion. As shown in the figure, a joint step 22 is formed in a step shape on the inner peripheral edge of the upper end 21 of the skirt 2. The joint step 22 includes an upper step 221 and a lower step 222.

  A support projecting piece 31 projecting upward is formed at the upper edge of the bowl portion 3, and a joining projecting piece 32 projecting outward from the outer peripheral surface located slightly below the top surface of the support projecting piece 31 is formed. Yes. A welding protrusion 41 protruding downward is formed on the lower surface of the rim portion 4.

  First, as shown in FIG. 2 (B), the joining projection piece 32 of the bowl portion 3 is placed on the lower step portion 222 of the skirt portion 2 and fixed with an adhesive or the like. Since the skirt portion 2 and the bowl portion 3 are fixed in advance, the skirt portion 2 and the bowl portion 3 can be fixed regardless of the rim portion 4, and the positioning of the both becomes easy. At this time, the bottomed groove portion 5 is formed as shown in FIG. The bottomed groove 5 is formed by the upper end 21 of the skirt 2, the support protrusion 31 of the bowl 3, the upper step 221 of the skirt 2, and the upper surface of the joint protrusion 32 of the bowl 3. It is an almost U shape.

  After the skirt portion 2 and the bowl portion 3 are fixed, when the welding protrusion 41 of the rim portion 4 is fitted into and contacted with the bottomed groove portion 5 and the welding protrusion 41 is vibrated and welded, as shown in FIG. The welding protrusion 41 melts and fills the bottomed groove portion 5. At this time, the back surface of the rim part on both sides of the welding protrusion 41 of the rim part 4 is also welded and fixed to and supported by the upper end part 21 of the skirt part 2 and the support protrusion 31 of the bowl part 3.

  The bonding portion has an uneven surface, and has a high bonding strength and a stable structure. The welding protrusion 41 of the welded rim portion 4 remains in the bottomed groove portion 5 and so-called burrs or the like do not occur on the outer surface of the joint portion.

  As described above, the fixing and assembling work of the three main members can be performed accurately by fixing the skirt portion 2 and the bowl portion 3 and the vibration welding of the rim portion 4 while shifting them in time. Further, since the three main members are fixed to each other at one place, the strength is stable and the rigidity is increased.

  FIG. 3 is an explanatory view of the assembly process of the second embodiment of the toilet of the present invention. In the second embodiment, in addition to the first embodiment, a positioning engagement portion 223 made of a tapered triangular V groove is formed on the upper surface of the lower step portion 222 of the joining step portion 22 of the skirt portion 2. When the positioning engagement portion 321 formed of a small triangular chevron is formed on the lower surface of the joining projection piece 32 of the bowl portion 3, and the joining projection piece 32 is placed and fixed to the lower step portion 222. The respective positioning engaging portions 223 and 321 are fitted and fixed via an adhesive. With this configuration, the relative displacement between the skirt portion 2 and the bowl portion 3 is prevented from occurring until the fixed state by the adhesive is stabilized. Further, when the welding protrusion 41 of the rim portion 4 is vibration welded to the bottomed groove portion 5, relative movement between the skirt portion 2 and the bowl portion 3 is suppressed. Furthermore, the joints are structurally stable and strong due to the fitting of the positioning engagement portions 223 and 321.

  The concavo-convex relationship between the positioning engaging portions 223 and 321 may be reversed, and the shape is not limited to the V-groove or the chevron.

  Members such as the skirt portion 2, the bowl portion 3, and the rim portion 4 are resin molded products formed by injection molding or sandwich molding. As the molded product member, a thermoplastic resin is mainly used. For example, PP having chemical resistance, relatively strong acrylic resin, ABS or PBT with a reinforcing material, or the like is used. In order to save costs, recycled materials of the above members can also be used.

  In addition, when the above three members are sandwich-molded, the core material can be reduced in weight by adding a foaming agent to reduce the cost. The thickness of the molded member at this time is preferably 2 to 30 mm.

  Furthermore, since the three members are generally large, it is preferable to anneal them to remove the residual stress inside.

  After the skirt part 2, the bowl part 3 and the rim part 4 are integrated, it is preferable to coat the surface with a known hard coat material in order to improve the surface quality.

It is an assembly side sectional view showing the outline of the toilet bowl of the present invention. It is assembly process explanatory drawing of 1st embodiment of the toilet bowl of this invention. It is assembly process explanatory drawing of 2nd embodiment of the toilet bowl of this invention. It is a partial cross-sectional perspective view in the junction part of the conventional synthetic resin toilet bowl.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet 2 Skirt part 21 Upper end part of skirt part 22 Joining step part of skirt part 221 Upper step part of joining step part 222 Lower step part of joining step part 223 Positioning engagement part of skirt part 3 Bowl part 31 Bowl part Support protrusion 32 Joint protrusion 321 of bowl part Positioning engagement part of bowl part 4 Rim part 41 Welding protrusion piece of rim part 5 Bottomed groove part

Claims (2)

  In a toilet bowl made of synthetic resin comprising a skirt part, a bowl part and a rim part, a joining step part comprising an upper step part and a lower step part is formed stepwise on the inner peripheral edge of the upper end part of the skirt part, and the bowl Forming a support protrusion protruding upward at the upper edge of the upper portion and a bonding protrusion protruding outward from the outer peripheral surface located slightly below the top surface of the support protrusion; A protruding welding protrusion is formed, and the bonding protrusion of the bowl is placed and fixed on the lower step of the skirt, and a bottomed groove is formed between the upper end of the skirt and the support protrusion of the bowl Furthermore, the toilet bowl is formed by vibration welding the welding projection piece of the rim portion to the bottomed groove portion.   A positioning engagement portion is formed on the lower step portion of the skirt portion, and a positioning engagement portion is formed on the lower surface of the joining projection piece of the bowl portion, and the both positioning engagement portions are engaged with each other. The toilet according to claim 1.

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