JP2001279778A - Warm water tank for bidet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that since a conventional laterally long warm water tank for bidet is greatly deformed in the deflection of the side face and it is broken in a shorter time as compared with an asymmetrical or cylindrical warm water tank, although reinforcing measures so as to thicken the wall for the warm water tank have been taken, the continuous warm water discharge characteristic deteriorates greatly because of decrease of stored hot water volume resulting from decrease of the pushing-up effect or thick wall. SOLUTION: A warm water tank 2 is constituted of a plurality of divided bodies is shaped to have a laterally long form and divided in the direction A substantially perpendicular to the horizontal plane and substantially perpendicular to the laterally long face. In this way, the weakest connection part in the strength can be formed to have the minimum sectional shape, hence, the deflective deformation of the connection part can be reduced and the fracture strength becomes large. When a first division body 19 is formed into a deep bottomed shape and a second division body 20 is formed into a substantially flat shape, as the second division body 20 hardly generate deflective deformation, the deflective deformation of the first division body 19 can be prevented by the second division body 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water tank used for a local cleaning device for cleaning a local part of a human body.

[0002]

2. Description of the Related Art In general, the structure of a hot water tank of a sanitary washing device is disclosed in Japanese Patent Application Laid-Open No. Hei 4-327092.
The configuration will be described with reference to FIGS. The sanitary washing device includes a toilet seat 52 placed on a toilet 51 and a toilet 5.
1 comprises a main body 53 and a toilet lid 54 located on the upper surface of the rear part, and is configured to be replaceable with an existing toilet seat. The cleaning water stored in the low tank 55 passes through a water supply hose 56, is pumped by a pump 57 in the main body case 53, passes through a water inlet hose 58 and a water conduit 16, is sent to the bottom of the hot water tank 2, and The hot water is heated by the hot water heater 10 in the hot water tank 2 and turned into hot water. The hot water reaches the switching valve 60 via the tap hole 17 at the upper part of the hot water tank 2 and the water passage 59. The water path is switched by the switching valve 60, and the washing water is discharged from either the posterior nozzle 61 or the bidet nozzle 62 to clean a local part of the human body. On the other hand, the hot water tank 2 has a structure in which an upper tank 3 and a lower tank 4 made of a resin material are joined in a water-tight manner by ultrasonic welding. The upper tank 3 has a hot water heater 10 and a thermistor 11 for detecting the temperature of the boiling hot water. A float switch 12 for preventing empty heating, a bimetal-type overheat prevention device 13 and a temperature fuse 14 which are activated when a hot water temperature control function fails, are disposed below the water inlet 15.
6 is provided so that the washing water that has entered through the water inlet 15 and the stored hot water do not mix. In addition,
Reference numeral 25 denotes a drain tap for discharging the washing water from the hot water tank 2.

[0003]

However, in recent years, the sanitary washing apparatus has been downsized, and the hot water tanks which had been arranged at the lower part of the main body on both sides of the toilet, until now, have a case which is arranged and built in the rear body of the toilet. Therefore, it was effective to make the hot water tank a horizontally long shape. On the other hand, since a pressure of about 2 kg / cm ² is applied to the inside of the hot water tank during the cleaning, the above-described horizontally long configuration has the following problems. Horizontally shaped hot water tanks have a large amount of flexural deformation on the side walls, and can be destroyed in a shorter time than symmetrical hot water tanks or cylindrical hot water tanks. In addition, measures were taken to strengthen the hot water tank by adding ribs, etc. to the side wall of the horizontally long hot water tank, and increasing the wall thickness, but the push-up efficiency was reduced due to the complicated internal shape of the tank. Also, the continuous tapping characteristics are extremely deteriorated due to a decrease in the amount of hot water stored due to the thickness.

[0004]

Means for Solving the Problems To achieve the above object, a first aspect of the present invention is a hot water tank for a local cleaning device comprising two or more divided bodies, wherein the hot water tank has a horizontally long shape and further has a horizontal surface. The present invention is characterized in that it is formed so as to be substantially vertical and also to a horizontally long surface in a substantially vertical direction. Thus, the joint having the weakest strength can be made the minimum cross-sectional shape, so that the amount of flexural deformation of the joint can be reduced, and the breaking strength can be increased.

According to a second aspect of the present invention, in addition to the first aspect, the first divided body is formed in a deep bottom shape and the second divided body is formed in a substantially flat shape. Since it hardly occurs, the bending deformation of the first divided body can be suppressed by the second divided body, and the amount of bending deformation of the joint can be reduced.
The breaking strength can be increased.

According to a third aspect, in addition to the second aspect, an engaging hole is formed in one of the first divided body and the second divided body, and an elastically deformable engaging piece is formed in the other. First
A screw fixing screw hole is formed in one of the divided body and the second divided body, and a screw insertion hole is formed in the other, and the first divided body and the second divided body are engaged with the engaging hole and the engaging piece. The hot water tank was formed by firmly connecting and integrating the first divided body and the second divided body by fixing the screw into the screw fixing screw hole through the screw insertion hole, and thereafter forming the hot water tank. Can be improved, and the process can be easily controlled due to the fixing with screws, and the disadvantage that the bonding strength is partially weakened can be prevented beforehand.

According to a fourth aspect of the present invention, in addition to the third aspect of the present invention, since the plurality of engaging holes and the engaging pieces are provided, the screws can be fixed in a state where the first divided body and the second divided body are temporarily fixed. Since it is good, the first divided body and the second divided body do not vary, and the workability is extremely good.

In claim 5, claim 3 or claim 4
In addition to the invention described above, a positioning guide is protrudingly provided near the engaging hole and the engaging piece, so that the first divided body and the second divided body can be easily aligned at the time of temporary fixing. .

According to a sixth aspect of the present invention, in addition to the fifth aspect of the present invention, since the screw for fixing the screw is provided in the guide for positioning, the thickness for forming the screw for fixing the screw is adjusted to the thickness. It can be used as a projection allowance for the guide.

According to a seventh aspect of the present invention, in addition to any one of the second to sixth aspects of the present invention, an insertion margin to be inserted inside the first divided body is provided inside the second divided body rather than the mating surface. Since it is provided so as to protrude, it is easy to perform alignment between the first divided body and the second divided body during the temporary fixing.

According to an eighth aspect of the present invention, in addition to the seventh aspect of the present invention, since a packing insertion groove recessed from the mating surface is provided on the outer periphery of the insertion margin, the packing does not enter the inside of the tank due to the insertion margin. Therefore, waterproofing at the joint surface can be reliably performed.

According to the ninth aspect, in addition to the first aspect, the baffle plate having a rectifying function for controlling the flow of the chilled water by the water supply is integrally formed with at least one divided body. There is no need to install a plate or the like, and the structure can be simplified. In addition, by integrally molding, the flow of the cold water does not vary due to the variation at the time of assembling due to the case of another part, and the hot water can be supplied stably and efficiently.

According to a tenth aspect of the present invention, in addition to the ninth aspect, the first divided body is formed in a deep bottom shape, the second divided body is formed in a substantially flat shape, and substantially the entire width of the first divided body is formed. , The baffle plate can be formed over the entire width of the hot water tank, and a rectification effect can be obtained in the entire tank.

According to an eleventh aspect of the present invention, in addition to the tenth aspect, the baffle plate comprises a vertical plate integrally formed on the bottom surface of the tank and a horizontal plate integrally formed on the inner surface of the tank. Has a hanging part that bends downward,
Since cold water flows into the hot water tank from the gap between the hanging part and the horizontal plate, the water can be slowly pushed up from the tank bottom surface side, and the pushing up efficiency can be improved.

According to a twelfth aspect of the present invention, in addition to the tenth or eleventh aspect, the mating surface side of the baffle plate is opened, and the second baffle plate is integrated with the second divided body above the open end. With the provision, the relatively fast flow from the open end of the baffle plate can be suppressed by the second baffle plate, and the rectification effect can be reliably obtained.

In claim 13, claims 10 to 1 are provided.
In addition to the third aspect, the third baffle plate is provided above the baffle plate.
Since the baffle plate is provided integrally at the deep bottom of the first divided body, the water flowing into the non-heat generating portion can be sent to the heat generating portion by the third baffle plate.

According to a fourteenth aspect of the present invention, in addition to the invention of the second aspect, an opening for attaching a drain plug is provided near the opening of the first divided body, and an operation guide hole of the drain plug is provided inside the second divided body. Is provided at the front end, so that the mold configuration of the first divided body can be simplified.

In the fifteenth aspect, in addition to the second aspect of the present invention, since the opening for mounting the bimetal switch is provided on the deep bottom surface of the first divided body, the bubbles generated in the tank rise upward by buoyancy. Since the air bubbles touch the bimetal switch only temporarily, malfunctions due to the air bubbles can be prevented.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the present invention will be described below in detail with reference to the drawings. 1 is a perspective view of the heat exchanger hot water tank of the present invention, FIG. 2 is a perspective view of a tank main body 19, FIG. 3 is a side view of the tank main body 19, and FIG.
FIG. 5 is an exploded front view for explaining the assembling of the tank main body 19, the lid 20, and the packing 21, and FIG. 6 is a side sectional view for explaining the relationship between the water pipe 16 and the baffle plate. 7, FIG. 7 is an enlarged front view of the drain plug mounting portion, FIG. 8 is an enlarged side sectional view of the drain plug mounting portion, and FIG.

Referring to FIG. 1, the hot water tank 2 includes a tank main body 19 (first divided body) and a lid 20 (second divided body) having a deep bottom shape, and the divided surface A is a horizontally long tank. The direction is substantially perpendicular to the direction. Referring to FIG. 2 and FIG. 3, a tap hole attaching portion 19a, a hot water thermistor attaching portion 19b, and a float switch attaching portion 19c are provided on the outer peripheral upper surface of the tank main body 19.
A water inlet 19d to which the water guide pipe 16 is mounted, a drain plug attaching portion 19e, a bimetal switch attaching portion 19f, a hot water heater attaching attaching portion 19g on a tank main body 19 closed outer surface, Tank main body 19
A thermal fuse mounting portion 19h is provided on each of the outer and rear surfaces. A mounting flange 19j is provided on the outer periphery of the open side portion 19i. This mounting flange 19j has an engagement hole 19k.
Are provided diagonally at two locations, and screw fixing screw holes 19l, 1
9m and 19n are provided at 11 places. In the screw fixing screw hole 19l, a reinforcing rib 19o continuous to the tank inner wall (FIG. 6)
Reference). The screw fixing screw hole 19n is provided so as to protrude from the mounting flange 19j to serve as a positioning guide. Also, a vertical plate 19p is provided on the bottom inside the tank,
A horizontal plate 1 having a hanging part 19r at the tip on the front surface in the tank
9q is provided over almost the entire width of the tank main body 19. Note that the vertical plate 19p and the horizontal plate 19q are connected to the open end 19d in order to form the drain plug attaching portion 19e near the open end 19i.
i cannot be formed. For this reason, an extension portion 20i described later is integrally formed with the lid 20. Further, since there is a non-heat generating portion near the mounting portion of the hot water heater 10, the water cannot be heated. Therefore, the third baffle plate 19s is integrally formed on the deep bottom surface of the tank main body 19.

Referring to FIG. 4, cover 20 is provided with mounting flange 20a, and this mounting flange 20a is provided with eleven screw insertion holes 20b. Also, two elastic engaging pieces 20c are provided diagonally, and a concave portion 20d for positioning and a guide piece 20e are provided near the elastic engaging pieces 20c. The lid 20 is provided with an insertion allowance 20f along the inner wall surface of the tank main body 19, and a packing accommodation groove 20g is provided on the outer periphery thereof. In addition, the second baffle plate 20h is formed integrally, and the extension 20i for providing the drain hole operation guide hole 20j is formed integrally.

As described above, the hot water tank 2 is formed so as to be substantially perpendicular to the hot water tank mounting fixing surface 19t for mounting the hot water tank 2 on the main body of the local cleaning device. With this divided structure, the degree of freedom is increased in the optimal design of the divided position in consideration of the breaking strength of the tank such as the amount of bending deformation of the hot water tank side wall surface.
Further, the structure of the divided body is such that the tank main body (first divided body) 19 is formed in a deep bottom shape, and the lid body (second divided body) 20 is formed in a substantially flat shape, so that the coupling surface is formed at the end of the hot water tank. , And avoiding the coupling surface from the maximum deformation portion can increase the strength reliability of the tank coupling surface.

In the hot water tank 2, the tank main body (first divided body) 19 and the lid (second divided body) 20 are engaged and integrated by the engagement hole 19k and the engagement piece 20c, and then the screw insertion hole 20b Screw holes for screw fixing 19l, 19m,
By fixing screws to 19n, the tank main body (first divided body) 19 and the lid (second divided body) 20 were firmly connected and integrated. At the time of connection, the engagement hole 19k and the engagement piece 2
Positioning guides 19n 'and 20e are provided protruding in the vicinity of 0c, and screw holes for fixing screws are provided in the guides 19n' to improve the accuracy of the mounting position.

In addition, an insertion margin 20f to be inserted inside the tank main body (first divided body) 19 is provided inside the lid (second divided body) 20 so as to protrude from the mating surface of the divided bodies, and is connected. At this time, the deformation of the tank main body (first divided body) 19 after molding can be corrected, and the screw insertion hole 2 can be corrected.
0b and the screw holes 19l, 19m, and 19n can have improved positional accuracy.

In addition, by providing a packing insertion groove 20g recessed from the mating surface of the divided bodies on the outer periphery of the insertion allowance 20f, the packing 21 can be securely fixed, and a water leakage problem or the like can be reduced.

Referring to FIGS. 3 and 6, baffle plates 19p and 19q for controlling the flow of hot water and cold water were installed over substantially the entire width of tank main body (first divided body) 19 by integral molding. The baffle plate is composed of a vertical plate 19p and a horizontal plate 19p.
The horizontal plate 19q is provided with a hanging portion 19r which is bent downward at the tip of the horizontal plate 19q, and the cold water flows into the hot water tank through a gap between the hanging portion 19r and the vertical plate 19p. did.

The tank main body (first divided body) 19
The baffle plate is opened at the mating surface side, and the second baffle plate 20h is placed at a position above the open end with a lid body (second divided body).
20 and a tank main body (first divided body) 1
A third baffle plate 19s is provided integrally with the deep bottom of the tank main body (first divided body) 19 above the baffle plate 9 to control the flow of cold water in the entire width direction in the tank.

With this structure, the baffle plate, which has conventionally been assembled with separate parts, is simplified by integral molding, and a simple heat exchanger structure can be realized.

The drainage portion will be described with reference to FIGS. 7 and 8. The drainage plug mounting portion 19e near the opening of the tank main body (first divided body) 19 has a drainage plug mounting opening 19u.
Is provided inside the lid body (second divided body) 20, and an extension portion 20i is formed at the tip of the operation guide hole 20j of the drain plug, so that the drain plug 18 is smoothly operated. This also prevents water leakage due to misalignment of the drain plug 18.

As shown in FIG. 9, the bimetal switch 13 is attached to the deep bottom surface of the tank main body (first divided body) 19 at the bimetal attachment portion 19f in a substantially vertical plane. By mounting on a vertical surface, the head is
Extracted air bubbles generated at the time of boiling water in the heater are less likely to adhere to the bimetal temperature sensing portion, and the water temperature can be reliably detected, thereby improving the bimetal operation stability.

[0031]

As described above, according to the hot water tank of the sanitary washing device of the present invention, the following effects can be obtained. In the hot water tank for a local cleaning device comprising two or more divided bodies, the divided body is formed in a direction substantially perpendicular to the hot water tank mounting fixed surface, and the structure of the divided body is formed such that the first divided body has a deep bottom shape, By forming the second divided body in a substantially flat shape, the coupling surface is arranged at the end of the hot water tank, and the reliability of the strength of the tank coupling surface can be increased by avoiding the coupling surface from the maximum deformation portion.

In addition, by forming a baffle plate having a rectifying function for controlling the flow of cold water by hot water supply into at least one divided body integrally, the baffle plate which has conventionally been assembled as a separate part can be integrally formed. A simplified and simple heat exchanger structure can be realized.

[Brief description of the drawings]

FIG. 1 is an external view of a hot water tank for a local cleaning device according to the present invention.

FIG. 2 is an external perspective view of a first divided body in the hot water tank for a local cleaning device of the present invention.

FIG. 3 is a perspective view of the first divided body in the hot water tank for a local cleaning device of the present invention, as viewed from above the opening side.

FIG. 4 is an external perspective view of a second divided body in the hot water tank for a local cleaning device of the present invention.

FIG. 5 is a divided structural view of a hot water tank for a local cleaning device according to the present invention.

FIG. 6 is a longitudinal sectional view of a first divided body in the hot water tank for a local cleaning device of the present invention, in which a hatched portion represents a cross section of a water inlet portion.

FIG. 7 is an enlarged view of an opening for attaching a drain plug of a hot water tank for a local cleaning device according to the present invention.

FIG. 8 is a longitudinal sectional view of the hot water tank for a local cleaning device according to the present invention, which cuts an opening for attaching a drain plug.

FIG. 9 is a cross-sectional view of a hot water tank for a local cleaning device according to the present invention, in which a hatched portion represents a vertical cross section of an opening for mounting a bimetal switch mainly in the tank.

FIG. 10 is a configuration diagram of a conventional sanitary washing device.

FIG. 11 is a schematic diagram of a water channel of a conventional sanitary washing device.

[Explanation of symbols]

 2 ... hot water tank 18 ... drain plug 19 ... tank main body (first divided body) 19f ... bimetal switch mounting opening 19k ... engagement hole 19l, 19m, 19n ... screw fixing screw hole 19p ... vertical plate 19q ... horizontal plate 19r: hanging part 19s: third baffle plate 19u: opening for attaching a drain plug 19n ': guide for alignment 20: second divided body (lid) 20b: screw insertion hole 20c: engaging piece 20e: alignment Guide 20f… Insertion allowance 20g… Packing insertion groove 20h… Second baffle plate 20j… Operation guide hole 20i… Extension

Claims (15)

[Claims] 1. A hot water tank for a local cleaning device comprising two or more divided bodies, wherein the hot water tank has a horizontally long shape, and is further formed so as to be substantially perpendicular to a horizontal plane and substantially perpendicular to a horizontally long surface. A hot water tank for a local cleaning device, characterized in that: 2. The hot water tank for a local cleaning device according to claim 1, wherein the first divided body is formed in a deep bottom shape, and the second divided body is formed in a substantially flat shape. Hot water tank. 3. The hot water tank for a local cleaning device according to claim 2, wherein one of the first divided body and the second divided body has an engagement hole, and the other has an elastically deformable engagement piece.
Further, a screw fixing screw hole is formed in one of the first divided body and the second divided body, and a screw insertion hole is formed in the other, and the first divided body and the second divided body are formed by the engaging hole and the engaging piece. That the first split body and the second split body are firmly connected and integrated by fixing the screw to the screw fixing spiral hole through the screw insertion hole, and thereafter forming the hot water tank. A hot water tank for a local cleaning device. 4. The hot water tank for a local cleaning device according to claim 3, wherein a plurality of the engagement holes and the engagement pieces are provided. 5. The local cleaning device according to claim 3, wherein a positioning guide protrudes and is provided near the engaging hole and the engaging piece. Hot water tank for equipment. 6. The hot water tank for a local cleaning device according to claim 5, wherein the screw for fixing the screw is provided in a positioning guide. 7. The hot water tank for a local cleaning device according to claim 2, wherein an insertion margin to be inserted inside the first divided body is provided inside the second divided body from the mating surface. A hot water tank for a local cleaning device, characterized in that a protruding portion is also provided. 8. The hot water tank for a local cleaning device according to claim 7, wherein a packing insertion groove depressed from a mating surface is provided on an outer periphery of the insertion margin. 9. The sanitary washing tank according to claim 1, wherein a baffle plate having a rectifying function for controlling a flow of cold water by water supply is integrally formed with at least one divided body. apparatus. 10. The hot water tank for a local cleaning device according to claim 9, wherein the first divided body is formed in a deep bottom shape, the second divided body is formed in a substantially flat shape, and substantially the first divided body is formed. A hot water tank for a local cleaning device, wherein the baffle plate is provided over the entire width. 11. The hot water tank for a local cleaning device according to claim 10, wherein the baffle plate is composed of a vertical plate integrally formed on a tank bottom surface and a horizontal plate integrally formed on a tank side surface. A hot water tank for a local cleaning device, comprising: a hanging portion bent downward, wherein cold water flows into a hot water tank from a gap between the hanging portion and a horizontal plate. 12. The hot water tank for a local cleaning device according to claim 10, wherein a mating surface side of the baffle plate is opened, and a second baffle plate is integrated with the second divided body above the open end. A hot water tank for a local cleaning device, wherein the hot water tank is provided in a washing machine. 13. The hot water tank for a local cleaning device according to claim 10, wherein a third baffle plate is provided integrally with the deep bottom of the first divided body above the baffle plate. Hot water tank for local cleaning equipment. 14. The hot water tank for a local cleaning device according to claim 2, wherein an opening for attaching a drain plug is provided near an opening of the first divided body, and an operation guide of the drain plug is provided inside the second divided body. A hot water tank for a local cleaning device, comprising an extension formed with a hole at a tip. 15. The hot water tank for a local cleaning device according to claim 2, wherein an opening for mounting a bimetal switch is provided on a deep bottom surface of the first divided body.