JP2011144577A - Hot water tank and sanitary washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water tank in which sealability is secured when a bar-like heater is used, and also provide a sanitary washing device. <P>SOLUTION: This hot water tank includes a hollow container which has a pair of through-holes and which is formed of resin, the bar-like heater at least a part of which is disposed in the hollow container, both ends of which are exposed to the outside of the hollow container through the through-holes, and which is attached to the hollow container, an intermediate member inserted between the outer peripheral surface of the heater and the inner wall surfaces of the through-holes at least one end of the heater, and seal members which are installed between the intermediate member and the hollow container and between the intermediate member and the heater, respectively, and which seal watertight between the outer peripheral surface of the heater and the inner wall surfaces of the through-holes. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  Aspects of the present invention generally relate to a hot water tank and a sanitary washing device, and more specifically, to a hot water tank and a sanitary washing device that heats water into warm water and stores the warm water.

  For example, in a local cleaning apparatus that cleans a user's local area, there is a local cleaning apparatus that uses a linear bar heater as a heat source of a hot water tank (Patent Document 1). In the local cleaning apparatus described in Patent Document 1, the linear bar heater penetrates the hot water tank. And the O-ring is attached to the part where the heater penetrates the hot water tank. Thereby, waterproofing of that portion, that is, prevention of water leakage is achieved.

  However, since the warm water tank is generally made of resin, the warm water tank may be warped. When warping occurs in the hot water tank, for example, the position of the pair of through holes through which the rod-shaped heater penetrates deviates from the design value, or the angle between the outer surface of the rod-shaped heater and the inner wall surface of the through-hole is the design value. It will shift from. If it does so, there exists a possibility that the sealing performance in the part which a rod-shaped heater penetrates may be insufficient. That is, when a rod-shaped heater is used as a heat source for the hot water tank, if the hot water tank is warped, a sealing failure may occur.

JP 2001-98619 A

  The present invention has been made based on the recognition of such a problem, and an object of the present invention is to provide a hot water tank and a sanitary washing device that can ensure sealing performance when a rod-shaped heater is used.

  According to a first aspect of the present invention, there is provided a hollow container having a pair of through holes and formed of a resin, and at least a part of the hollow container is disposed inside the hollow container, and both end portions pass through the through hole to form the hollow container. A rod-shaped heater that is exposed to the outside and attached to the hollow container, and an intermediate member that is inserted between the outer peripheral surface of the heater and the inner wall surface of the through hole at least at one end of the heater; A seal member provided between the intermediate member and the hollow container and between the intermediate member and the heater, and watertight between the outer peripheral surface of the heater and the inner wall surface of the through-hole. A hot water tank is provided.

  According to this hot water tank, both end portions of the heater pass through the pair of through holes, and are exposed to the outside of the hollow container from the respective through holes. An intermediate member is inserted between the outer peripheral surface of the heater and the inner wall surface of the through hole at at least one end of the heater. Further, seal members are provided between the intermediate member and the hollow container and between the intermediate member and the heater, respectively.

  Thereby, a heater is attached to the part of the through-hole of a hollow container watertightly with a some sealing member. Further, even when the hollow container is warped and the pair of through holes are displaced from each other, water is prevented from leaking between the inner wall surface of the through hole of the hollow container and the outer peripheral surface of the heater. be able to. That is, the hot water tank of the present invention can ensure sealing performance when a rod-shaped heater is used as a heat source.

  In a second aspect based on the first aspect, the intermediate member divides a gap between the outer peripheral surface of the heater and the inner wall surface of the through hole into two in the radial direction of the heater. The hot water tank is displaceable as viewed from at least one of the outer peripheral surface of the heater and the inner wall surface of the through hole by providing a gap between the intermediate member and the inner wall surface of the through hole. It is.

  According to this hot water tank, the gap between the outer peripheral surface of the heater and the inner wall surface of the through hole of the hollow container is divided into two in the radial direction of the heater by the intermediate member. A gap exists between the inner wall surface of the through hole and the intermediate member. There is a gap between the outer peripheral surface of the heater and the intermediate member. Therefore, the intermediate member can be displaced as viewed from at least one of the outer peripheral surface of the heater and the inner wall surface of the through hole of the hollow container. As a result, even if the hollow container is warped and the pair of through-holes are displaced from each other, the intermediate member is displaced accordingly, so that the sealing performance can be ensured by the sealing member.

  Further, according to a third invention, in the first or second invention, the hollow container is a retaining piece for preventing the intermediate member from slipping out between the outer peripheral surface of the heater and the inner wall surface of the through hole. The intermediate member is a hot water tank engaged with the retaining piece.

  According to this hot water tank, when the intermediate member is inserted into the through hole of the hollow container, the intermediate member is held in the hollow container by engaging the retaining piece of the hollow container. As a result, it is not necessary to fix the intermediate member to the hollow container with a fastening member such as a screw, so that the intermediate member can be prevented from coming off from the hollow container without completely fixing the hollow container and the intermediate member. The sealing performance by the member can be ensured. Further, the number of parts can be reduced, and the cost can be reduced.

  In a fourth aspect based on the first aspect, the intermediate member holds the heater slidable in the axial direction by the sealing member provided between the hollow container and the heater. It is a hot water tank characterized by.

  According to this hot water tank, the heater is slidable in the axial direction by the sealing member provided between the hollow container and the heater. Thereby, even if the heater expands and contracts in the axial direction by its own heating and cooling, the hollow container, the heater, and the intermediate member are not damaged or destroyed. Therefore, the reliability of the hot water tank can be further improved.

  Moreover, 5th invention is a retaining part which prevents that the said intermediate member slips out between the warm water tank in any one of 1st-4th invention, and the outer peripheral surface of the said heater, and the inner wall face of the said through-hole. And a base member that fixes the hot water tank.

  According to this sanitary washing device, the intermediate member can be prevented from coming off between the outer peripheral surface of the heater and the inner wall surface of the through hole without fixing the intermediate member to the hollow container with a fastening member such as a screw. it can. Therefore, the intermediate member can be easily displaced when viewed from at least one of the outer peripheral surface of the heater and the inner wall surface of the through hole of the hollow container. As a result, even if the hollow container is warped and the pair of through-holes are displaced from each other, the intermediate member is displaced accordingly, so that the sealing performance can be ensured by the sealing member.

  ADVANTAGE OF THE INVENTION According to the aspect of this invention, the hot water tank and sanitary washing apparatus which can ensure the sealing performance at the time of using a rod-shaped heater are provided.

It is a perspective schematic diagram showing the hot water tank concerning embodiment of this invention. It is the plane schematic diagram which looked at the hot water tank concerning this embodiment from the upper part. It is the plane schematic diagram which looked at the hot water tank concerning this embodiment from the front. It is a cross-sectional schematic diagram which illustrates the schematic structure of the part which the heater penetrated the tank. It is the decomposition | disassembly schematic diagram which looked at the hot water tank concerning this embodiment from diagonally upward. It is the decomposition | disassembly schematic diagram which looked at the hot water tank concerning this embodiment from diagonally upward. It is the decomposition | disassembly schematic diagram which looked at the hot water tank concerning this embodiment from the downward direction. It is a cross-sectional schematic diagram in the cut surface BB represented to FIG. It is a cross-sectional schematic diagram showing the attachment structure in the one end part of the heater of this embodiment. It is a perspective schematic diagram showing the state where the intermediate member and tank of this embodiment engaged. It is a perspective schematic diagram showing the state where the intermediate member and backup ring of this embodiment were engaged. It is a cross-sectional schematic diagram in the cut surface EE represented to FIG. It is a cross-sectional schematic diagram showing the attachment structure in the other end part of the heater of this embodiment. It is a perspective schematic diagram showing the pressing member of this embodiment. It is a cross-sectional schematic diagram in the cut surface FF represented to FIG. It is a cross-sectional schematic diagram for demonstrating the effect | action of the attachment structure in the one end part of a heater. It is a cross-sectional schematic diagram for demonstrating the effect | action of the attachment structure in the other end part of a heater. It is a perspective schematic diagram which illustrates the toilet apparatus provided with the sanitary washing apparatus concerning other embodiment of this invention. It is the isometric view schematic diagram which looked at the inside of the sanitary washing apparatus concerning this embodiment from the front side. It is the isometric view schematic diagram which looked at the inside of the sanitary washing apparatus concerning this embodiment from the rear side. It is the isometric view schematic diagram which looked at the inside of the sanitary washing apparatus concerning this embodiment from the upper direction. It is the plane schematic diagram which looked at an example of the retaining part of this embodiment from the upper part. It is the plane schematic diagram which looked at an example of the retaining part of this embodiment from the front. It is the isometric view schematic diagram which looked at an example of the retaining part of this embodiment from diagonally upward.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a schematic perspective view showing a hot water tank according to an embodiment of the present invention.
FIG. 2 is a schematic plan view of the hot water tank according to the present embodiment as viewed from above.
Moreover, FIG. 3 is the plane schematic diagram which looked at the hot water tank concerning this embodiment from the front.

The hot water tank 100 according to the present embodiment includes a tank (hollow container) 110 having a hollow shape, and a rod-shaped heater 120 disposed inside the tank 110.
The tank 110 is made of resin and has an upper tank 110a and a lower tank 110b. The upper tank 110a and the lower tank 110b are coupled to each other, for example, by welding or adhesion. Therefore, the tank 110 can store the water flowing into the inside. However, the upper tank 110a and the lower tank 110b may be integrally formed.

  The heater 120 is provided along the bottom surface inside the tank 110, and can heat the water in the tank 110 to warm water. Moreover, the heater 120 has penetrated the tank 110, as represented to FIGS. More specifically, both end portions of the heater 120 pass through a through hole formed in the tank 110 and are exposed to the outside of the tank 110 from the through hole. The heater 120 is attached in a watertight manner by a seal member such as an O-ring, for example, at a portion that penetrates the tank 110. This will be described in detail later.

  The hot water tank 100 can be used in various devices that generate and store hot water. In this embodiment, the warm water tank 100 is used as an example of a sanitary cleaning device that cleans a user's “buttock” or the like with water. I will give a description.

The hot water tank 100 according to the present embodiment further includes an inflow portion 181, a rectifying unit 182, a vacuum breaker 183, a float switch 185, a bimetal 186, and a temperature detection unit 188.
The inflow portion 181 is provided at the lower portion of the tank 110 and guides water supplied from a water supply source (not shown) into the tank 110. The rectifying unit 182 is provided in the tank 110 and in the vicinity of the inflow portion 181. And the rectification unit 182 can make the dynamic pressure substantially uniform while reducing the dynamic pressure of the water flowing into the tank 110 from the inflow portion 181.

The float switch 185 can detect the water level in the tank 110, and can stop the heater 120 when the detected water level is equal to or lower than a predetermined water level. Thereby, it is possible to prevent emptying.
The vacuum breaker 183 takes in air from the outside when draining the water channel (flow path), and promotes drainage of the water channel.
The bimetal 186 stops water supply to the tank 110 when the water in the tank 110 is heated to a predetermined temperature or higher. Thereby, it can prevent that the water in the tank 110 is heated too much.
The temperature detection means 188 can detect the temperature of the water in the tank 110 and output information on the water temperature. Thereby, the energization amount to the heater 120 is controlled, and the temperature of the water in the tank 110 is kept at an appropriate temperature. As the temperature detection means 188, for example, a thermistor can be used.

  Water supplied from a water supply source (not shown) is guided from the inflow portion 181 to the rectifying unit 182 in the tank 110 as indicated by an arrow A1 shown in FIGS. The dynamic pressure of the water guided to the rectification unit 182 is reduced by the rectification unit 182. Subsequently, the water whose dynamic pressure has been reduced by the rectifying unit 182 flows out of the rectifying unit 182 and spreads to the lower layer in the tank 110. Subsequently, the water spread in the lower layer in the tank 110 is heated by the heater 120 to become hot water.

  The water heated by the heater 120 in the tank 110 flows out of the tank 110 through the vacuum breaker 183 so as to be pushed out from the water newly supplied from the inflow portion 181. That is, the water heated by the heater 120 flows out of the tank 110 via the vacuum breaker 183 as indicated by arrows A2 and A3 shown in FIGS. 1 and 2, and is guided to, for example, a nozzle unit (not shown).

Next, a schematic structure of a portion where the heater 120 penetrates the tank 110 will be described with reference to the drawings.
FIG. 4 is a schematic cross-sectional view illustrating the schematic structure of the portion where the heater penetrates the tank.
FIG. 4A is a schematic cross-sectional view illustrating a schematic structure when the outer peripheral surface of the heater and the inner wall surface of the through hole of the tank are parallel.
FIG. 4B is a schematic cross-sectional view illustrating a schematic structure when the outer peripheral surface of the heater and the inner wall surface of the through hole of the tank are not parallel.

  The tank 110 of the present embodiment has a pair of through holes 111 through which the heater 120 can pass. Both end portions of the heater 120 pass through the pair of through holes 111 and are exposed to the outside of the tank 110 from the respective through holes 111. A seal member 168 such as an O-ring is provided between the tank 110 and the heater 120, more specifically between the inner wall surface 113 of the through hole 111 and the outer peripheral surface 121 of the heater 120. Thus, the heater 120 is watertightly attached to the portion of the through hole 111 of the tank 110. That is, the seal member 168 prevents the water in the tank 110 from leaking from the through hole 111 to the outside.

  Here, it is assumed that the inner dimension of the through hole 111 is the dimension D as shown in FIG. At this time, as shown in FIG. 4A, when the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 of the through hole 111 are parallel, the seal member 168 is the inner wall surface 113 of the through hole 111. The dimension between the portions in contact with the inner diameter D is the same as the inner dimension D of the through hole 111. On the other hand, for example, when the tank 110 is warped, the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 of the through hole 111 are not parallel as shown in FIG. There is. In this case, if the angle between the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 of the through-hole 111 is θ, the seal member 168 is in contact with the inner wall surface 113 of the through-hole 111. The dimension between is D / cos θ.

  Therefore, when the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 of the through hole 111 are not parallel, the dimension between the contact portions between the seal member 168 and the inner wall surface 113 is the outer peripheral surface 121 of the heater 120 and the through hole 111. It is larger than the dimension between the contact parts of the sealing member 168 and the inner wall surface 113 when the inner wall surface 113 is parallel. That is, when the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 of the through hole 111 are not parallel, the apparent inner dimension of the through hole 111 is the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 of the through hole 111. Is larger than when they are parallel.

  Therefore, the crushing allowance or crushing rate of the seal member 168 is smaller when the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 of the through hole 111 are not parallel. As a result, the sealing performance between the inner wall surface 113 of the through hole 111 and the outer peripheral surface 121 of the heater 120 may not be ensured as it is.

  Further, the seal member 168 such as an O-ring generally has a compression set. Furthermore, the hot water tank is used for a long period of time. Therefore, if the hot water tank is used over a long period of time in a state where the crushing cost and crushing rate of the sealing member 168 are smaller, the sealing performance between the inner wall surface 113 of the through hole 111 and the outer peripheral surface 121 of the heater 120 cannot be ensured. There is a case.

On the other hand, the hot water tank 100 according to the present embodiment includes an intermediate member provided between the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 of the through hole 111 of the tank 110. A seal member 168 is provided between the intermediate member and the inner wall surface 113 of the through hole 111 and between the intermediate member and the outer peripheral surface 121 of the heater 120.
Next, details of these structures will be described with reference to the drawings.

5 and 6 are exploded schematic views of the hot water tank according to the present embodiment as viewed obliquely from above.
FIG. 7 is an exploded schematic view of the hot water tank according to the present embodiment as viewed from below.
In the hot water tank 100 illustrated in FIG. 5, the vacuum breaker 183, the float switch 185, and the bimetal 186 are appropriately omitted for convenience of explanation. Further, in the hot water tank 100 shown in FIG. 6, the upper tank 110a is appropriately omitted for convenience of explanation.

As shown in FIGS. 5 to 7, the intermediate member 130, the backup ring 140, and the second seal member 162 are inserted into one end of the heater 120. A first seal member 161 is attached to the intermediate member 130.
As shown in FIGS. 6 and 7, the heater 120 passes through the first through hole 111 a formed in the tank 110 and is inserted into the tank 110. Further, the heater 120 passes through the second through hole 111 b formed in the tank 110. Thus, both end portions of the heater 120 penetrate the first and second through holes 111a and 111b, respectively, and are exposed to the outside of the tank 110 from the first and second through holes 111a and 111b, respectively.

  A third seal member 163 and a pressing member 150 are inserted into the other end portion of the heater 120. As described above, the heater 120 includes the intermediate member 130, the backup ring 140, the pressing member 150, and the first to third seal members 161, 162, and 163, and the first and second through holes of the tank 110. It is watertightly attached to the portions 111a and 111b.

Next, a state where the heater 120 is attached to the tank 110 will be described with reference to the drawings.
FIG. 8 is a schematic cross-sectional view taken along a cutting plane BB shown in FIG.

  At one end of the heater 120, a first seal member 161 is provided between the intermediate member 130 and the tank 110, and a second seal member 162 is provided between the intermediate member 130 and the heater 120. . That is, the heater 120 is not attached to the tank 110 via one seal member, but is attached to the tank 110 via two seal members and an intermediate member.

The intermediate member 130 is engaged with the tank 110. Thereby, it is possible to prevent the intermediate member 130, the first and second seal members 161 and 162, and the backup ring 140 from coming off the heater 120. Moreover, the assemblability of the hot water tank 100 can be further improved.
The backup ring 140 is engaged with the intermediate member 130. Therefore, the backup ring 140 can suppress the movement of the second seal member 162 toward the central portion of the heater 120. That is, the backup ring 140 can prevent the second seal member 162 from moving from the inside of the intermediate member 130 to the outside.

  On the other hand, a third seal member 163 is provided between the heater 120 and the tank 110 at the other end of the heater 120. The pressing member 150 is inserted into the second through hole 111b of the tank 110, and is fixed to the tank 110 by a fastening member such as a screw. Thereby, it is possible to prevent the third seal member 163 from coming off the heater 120.

Next, details of the mounting structure between the heater 120 and the tank 110 will be described with reference to an enlarged view.
FIG. 9 is a schematic cross-sectional view showing an attachment structure at one end of the heater according to the present embodiment.
FIG. 10 is a schematic perspective view showing a state where the intermediate member and the tank according to the present embodiment are engaged.
FIG. 11 is a schematic perspective view showing a state in which the intermediate member and the backup ring of the present embodiment are engaged.
FIG. 12 is a schematic cross-sectional view taken along the cutting plane EE shown in FIG.

FIG. 9 is an enlarged schematic view showing the area A5 shown in FIG. 8 in an enlarged manner.
FIG. 10 is a schematic perspective view of the structure shown in FIG. 9 as viewed from the outside of the tank 110.

  As shown in FIGS. 9 and 12, the first seal member 161 is attached to the intermediate member 130 by being attached inside a groove or the like formed in the intermediate member 130, for example. The intermediate member 130 to which the first seal member 161 is attached is inserted into a first through hole 111 a formed in the tank 110. More specifically, as shown in FIG. 9, the intermediate member 130 is inserted between the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 a of the first through hole 111 a of the tank 110.

  That is, the gap between the outer peripheral surface 121 of the heater 120 and the inner wall surface 113 a of the first through hole 111 a of the tank 110 is divided into two in the radial direction of the heater 120 by the intermediate member 130. A gap exists between the inner wall surface 113 a of the first through hole 111 a and the intermediate member 130. In addition, a gap exists between the outer peripheral surface 121 of the heater 120 and the intermediate member 130.

  As a result, the first seal member 161 is sandwiched between the intermediate member 130 and the inner wall surface 113a of the first through hole 111a of the tank 110. At this time, the first seal member 161 is crushed by the intermediate member 130 and the tank 110 with a predetermined crushing allowance and a crushing rate. Therefore, the first seal member 161 can prevent water from leaking between the intermediate member 130 and the inner wall surface 113a of the first through hole 111a of the tank 110.

  On the other hand, the second seal member 162 is provided inside the intermediate member 130 while being inserted into one end of the heater 120. Further, the backup ring 140 is inserted into the intermediate member 130. As a result, the second seal member 162 is sandwiched between the outer peripheral surface 121 of the heater 120, the intermediate member 130, and the backup ring 140. At this time, the second seal member 162 is crushed by the intermediate member 130 and the heater 120 with a predetermined crushing allowance and a crushing rate. Therefore, the second seal member 162 can prevent water from leaking between the intermediate member 130 and the outer peripheral surface 121 of the heater 120.

  As shown in FIG. 12, the backup ring 140 has an engagement hole 141. On the other hand, as shown in FIGS. 11 and 12, the intermediate member 130 has an engagement convex portion 135 that can be engaged with the engagement hole 141 of the backup ring 140. Therefore, when the backup ring 140 is inserted into the intermediate member 130, the engagement hole 141 of the backup ring 140 and the engagement convex portion 135 of the intermediate member 130 are engaged with each other, so that the backup ring 140 is attached to the intermediate member 130. . Accordingly, the backup ring 140 can prevent the second seal member 162 from moving from the inside of the intermediate member 130 to the outside, and can continue to hold the second seal member 162 at a predetermined position.

  Further, as shown in FIG. 10, the intermediate member 130 has a protrusion 131. On the other hand, the tank 110 has a notch (a retaining piece) 115. The protrusion 131 of the intermediate member 130 and the notch 115 of the tank 110 can be engaged. Therefore, when the intermediate member 130 is inserted into the first through hole 111a of the tank 110, the protrusion 131 of the intermediate member 130 and the notch 115 of the tank 110 are engaged with each other, so that the intermediate member 130 is held in the tank 110. The Thereby, since it is not necessary to fix the intermediate member 130 to the tank 110 with a fastening member such as a screw, the intermediate member 130 is prevented from coming off from the tank 110 without completely fixing the tank 110 and the intermediate member 130. Thus, the sealing performance by the first to third sealing members 161, 162, and 163 can be ensured. In addition, the number of parts can be reduced and the cost can be reduced. The intermediate member 130 is not fixed to the tank 110 because there is a certain gap between the protrusion 131 and the notch 115.

  As shown in FIG. 9, the heater 120 is held by the intermediate member 130 via the second seal member 162. That is, the heater 120 is held by the frictional force between the second seal member 162 and the outer peripheral surface 121 in the longitudinal direction (axial direction). Therefore, the heater 120 can move or expand and contract in the longitudinal direction (axial direction) by receiving a force larger than the frictional force. That is, the heater 120 is slidable in the longitudinal direction (axial direction) by the second seal member 162.

  Here, as shown in FIGS. 9 and 12, a stopper 133 is provided inside the intermediate member 130. When the stopper 133 comes into contact with the end surface 123 of the heater 120, the heater 120 cannot move further in the right direction in FIG. Therefore, the stopper 133 of the intermediate member 130 can prevent the heater 120 from coming off from the tank 110, the intermediate member 130, or the backup ring 140.

  At this time, as shown in FIG. 9, there is a gap between the stopper 133 and the end surface 123 of the heater 120. The gap is, for example, about 1 to 2 mm (millimeter). Therefore, the heater 120 can slide within the gap. Thereby, even if the heater 120 expands and contracts in the axial direction by its own heating and cooling, the tank 110, the heater 120, and the intermediate member 130 are not damaged or destroyed. Therefore, the reliability of the hot water tank 100 can be further improved. In addition, about the clearance gap between the stopper 133 and the end surface 123 of the heater 120, it is not necessarily limited to about 1-2 mm (millimeter), for example, and can be set and changed suitably.

FIG. 13 is a schematic cross-sectional view illustrating an attachment structure at the other end of the heater according to the present embodiment. FIG. 14 is a schematic perspective view showing the pressing member of this embodiment.
FIG. 15 is a schematic cross-sectional view taken along the section FF shown in FIG.
FIG. 13 is an enlarged schematic view showing the area A6 shown in FIG. 8 in an enlarged manner.

  As shown in FIG. 13, the third seal member 163 is provided in the second through hole 111 b of the tank 110 while being inserted into the other end of the heater 120. Further, the pressing member 150 is inserted into the second through hole 111 b of the tank 110. As shown in FIGS. 14 and 15, the pressing member 150 has a fastening hole 155. Then, as shown by an arrow A <b> 7 shown in FIG. 14, a pressing member 150 is fixed to the tank 110 by passing a fastening member such as a screw through the fastening hole 155 and fastening it to the tank 110. According to this, the holding member 150 prevents the third seal member 163 from moving from the inside of the second through hole 111b of the tank 110 to the outside, and holds the third seal member 163 in a predetermined position. You can continue.

  As a result, the third seal member 163 is sandwiched between the outer peripheral surface 121 of the heater 120, the inner wall surface 113 b of the second through hole 111 b of the tank 110, and the pressing member 150. At this time, the third seal member 163 is crushed by the tank 110 and the heater 120 with a predetermined crushing allowance and a crushing rate. Therefore, the third seal member 163 can prevent water from leaking between the inner wall surface 113 b of the second through hole 111 b of the tank 110 and the outer peripheral surface 121 of the heater 120.

  As shown in FIG. 13, the heater 120 is held in the second through hole 111 b of the tank 110 via the third seal member 163. That is, the heater 120 is held by the frictional force between the third seal member 163 and the outer peripheral surface 121 in the longitudinal direction (axial direction). Therefore, the heater 120 can move or expand and contract in the longitudinal direction (axial direction) by receiving a force larger than the frictional force. That is, the heater 120 can slide in the longitudinal direction (axial direction) by the third seal member 163.

  Here, as shown in FIGS. 14 and 15, a stopper 153 is provided inside the pressing member 150. When the stopper 153 comes into contact with the end surface 123 of the heater 120, the heater 120 cannot move further in the left direction in FIG. Therefore, the stopper 153 of the pressing member 150 can prevent the heater 120 from coming off the tank 110 or the pressing member 150.

  In the present embodiment, the intermediate member 130 is inserted between the outer peripheral surface 121 of the heater 120 and the inner wall surface 113a of the first through hole 111a of the tank 110 at one end of the heater 120. The case where the heater 120 is attached to the tank 110 in a watertight manner via the first and second seal members 161 and 162 has been described as an example. On the other hand, the case where the pressing member 150 is fixed to the tank 110 by the fastening member at the other end of the heater 120 and the heater 120 is water-tightly attached to the tank 110 via the third seal member 163 has been described as an example. . However, the embodiment of the present invention is not limited to this. For example, the heater 120 may be water-tightly attached to the tank 110 not only at one end of the heater 120 but also at both ends of the heater 120 by the structure shown in FIG.

Next, the operation of the mounting structure between the heater 120 and the tank 110 when the first and second through holes 111a and 111b of the tank 110 are inclined as viewed from the heater 120 will be described with reference to the drawings.
FIG. 16 is a schematic cross-sectional view for explaining the operation of the mounting structure at one end of the heater.
FIG. 17 is a schematic cross-sectional view for explaining the operation of the mounting structure at the other end of the heater.
16A is a schematic cross-sectional view illustrating a case where the intermediate member 130 has become the outer peripheral surface 121 of the heater 120. FIG. 16B is a cross-sectional view illustrating the first penetration of the tank 110 by the intermediate member 130. It is a cross-sectional schematic diagram which illustrates the time of becoming the inner wall surface 113a of the hole 111a.

  The tank 110 is made of resin as described above with reference to FIG. Therefore, the tank 110 may be warped. In this case, the positions of the first through hole 111a and the second through hole 111b of the tank 110 deviate from the design values, or the outer peripheral surface 121 of the heater 120 and the first and second through holes 111a. , 111b and the respective inner wall surfaces 113a, 113b are shifted from the design values. If it does so, there exists a possibility that the sealing performance in the 1st and 2nd through-holes 111a and 111b of the tank 110 may be insufficient.

  In contrast, in the hot water tank 100 according to the present embodiment, an intermediate member is provided between the outer peripheral surface 121 of the heater 120 and the inner wall surface 113a of the first through hole 111a of the tank 110 at one end of the heater 120. 130 is inserted, and the heater 120 is watertightly attached to the tank 110 via the intermediate member 130 and the first and second seal members 161 and 162. Therefore, when the inner wall surface 113a of the first through hole 111a of the tank 110 is inclined as viewed from the outer peripheral surface 121 of the heater 120, the first and second seal members 161 and 162 can absorb changes in the angle. .

  As a result, the intermediate member 130 can follow the outer peripheral surface 121 of the heater 120 as shown in FIG. Alternatively, the intermediate member 130 can follow the inner wall surface 113a of the first through hole 111a of the tank 110 as shown in FIG. Alternatively, the intermediate member 130 does not follow the outer peripheral surface 121 of the heater 120 and the inner wall surface 113a of the first through hole 111a of the tank 110, but the inner wall surface of the first through hole 111a as viewed from the outer peripheral surface 121 of the heater 120. It is possible to incline at an intermediate angle between the inclination angles of 113a. That is, the intermediate member 130 can be displaced as seen from at least one of the outer peripheral surface 121 of the heater 120 and the inner wall surface 113a of the first through hole 111a of the tank 110.

  At this time, two seal members (first and second seal members 161 and 162) are provided at one end of the heater 120. Therefore, the first and second seal members 161 and 162 can share and absorb the change in angle between the outer peripheral surface 121 of the heater 120 and the inner wall surface 113a of the first through hole 111a. . Therefore, the amount of change in the crushing allowance and crushing rate of the first and second seal members 161 and 162 is a case where the intermediate member 130 is not provided and only one seal member is interposed. Smaller than.

  Thereby, even when warpage occurs in the tank 110, it is possible to prevent water from leaking between the inner wall surface 113 a of the first through hole 111 a of the tank 110 and the outer peripheral surface 121 of the heater 120. That is, the hot water tank 100 according to the present embodiment can ensure the sealing performance when the rod-shaped heater 120 is used as a heat source.

  As shown in FIG. 16A, when the intermediate member 130 follows the outer peripheral surface 121 of the heater 120, the inner wall surface 113a of the first through hole 111a of the tank 110 is the first seal member. It inclines centering on 161 center. When the inner wall surface 113a of the first through-hole 111a of the tank 110 is inclined by about 2 to 3 degrees, for example, when viewed from the outer peripheral surface 121 of the heater 120, the intermediate member 130 and the intermediate member 130 in the region A11 shown in FIG. have a finger in the pie. Therefore, when the inner wall surface 113a of the first through hole 111a of the tank 110 is inclined at an angle larger than, for example, about 2 to 3 degrees when viewed from the outer peripheral surface 121 of the heater 120, the interference point with the intermediate member 130 is substantially centered. Can be inclined as.

16B, when the intermediate member 130 follows the inner wall surface 113a of the first through hole 111a of the tank 110, the inner wall surface 113a and the intermediate member 130 are The seal member 162 is inclined about the center of the center. When the inner wall surface 113a of the first through hole 111a of the tank 110 is inclined by, for example, about 2 to 3 degrees when viewed from the outer peripheral surface 121 of the heater 120, the intermediate member 130 is in the region A12 shown in FIG. It interferes with the outer peripheral surface 121 of the heater 120. Therefore, when the inner wall surface 113a of the first through-hole 111a of the tank 110 is inclined at an angle larger than, for example, about 2 to 3 degrees when viewed from the outer circumferential surface 121 of the heater 120, the outer circumferential surface 121 of the intermediate member 130 and the heater 120. It can incline centering on the interference point.
In addition, about the angle of about 2 to 3 degree | times mentioned above, it is not necessarily limited to this but can change a setting suitably.

  On the other hand, as shown in FIG. 17, at the other end of the heater 120, the pressing member 150 is fixed to the tank 110 by a fastening member, and the heater 120 is watertight to the tank 110 via the third seal member 163. It is attached. Therefore, when the inner wall surface 113b of the second through hole 111b of the tank 110 is inclined as viewed from the outer peripheral surface 121 of the heater 120, the pressing member 150 is inclined in accordance with the inner wall surface 113b of the second through hole 111b of the tank 110. The third seal member 163 can absorb the change in the angle.

  Further, at the one end portion of the heater 120, as described above with reference to FIG. 16, the intermediate member 130 is displaced as viewed from at least one of the outer peripheral surface 121 of the heater 120 and the inner wall surface 113a of the first through hole 111a of the tank 110. can do. Furthermore, the first and second sealing members 161 and 162 can share and absorb the change in angle between the outer peripheral surface 121 of the heater 120 and the inner wall surface 113a of the first through hole 111a. . Therefore, the amount of change in the crushing allowance and crushing rate of the third seal member 163 is a case where the intermediate member 130 is not provided at one end of the heater 120, and only one seal member is interposed. Smaller than the case.

  Thereby, even when warpage occurs in the tank 110, it is possible to prevent water from leaking between the inner wall surface 113 b of the second through hole 111 b of the tank 110 and the outer peripheral surface 121 of the heater 120. That is, the hot water tank 100 according to the present embodiment can ensure the sealing performance when the rod-shaped heater 120 is used as a heat source.

When the inner wall surface 113b of the second through hole 111b of the tank 110 is inclined as viewed from the outer peripheral surface 121 of the heater 120, the inner wall surface 113b and the pressing member 150 are centered on the central portion of the third seal member 163. Tilt. When the inner wall surface 113b of the second through-hole 111b of the tank 110 is inclined by about 2 to 3 degrees, for example, when viewed from the outer peripheral surface 121 of the heater 120, the pressing member 150 moves the heater 120 in the region A13 shown in FIG. Interferes with the outer peripheral surface 121. Therefore, when the inner wall surface 113b and the pressing member 150 are inclined at an angle larger than, for example, about 2 to 3 degrees when viewed from the outer peripheral surface 121 of the heater 120, the interference point between the pressing member 150 and the outer peripheral surface 121 of the heater 120 is substantially reduced. Can be tilted as a center.
In addition, about the angle of about 2 to 3 degree | times mentioned above, it is not necessarily limited to this but can change a setting suitably.

Next, another embodiment of the present invention will be described with reference to the drawings.
FIG. 18 is a schematic perspective view illustrating a toilet apparatus provided with a sanitary washing device according to another embodiment of the invention.
FIG. 19 is a schematic perspective view of the inside of the sanitary washing device according to the present embodiment as viewed from the front side.
FIG. 20 is a schematic perspective view of the inside of the sanitary washing device according to the present embodiment as viewed from the rear side.

  The toilet apparatus shown in FIG. 18 includes a Western-style toilet bowl (hereinafter simply referred to as “toilet bowl” for convenience of explanation) 800 and a sanitary washing apparatus 10 provided at the upper rear portion of the toilet bowl 800. The sanitary washing device 10 includes a casing (base member) 200, a toilet seat 300, and a toilet lid 400. The toilet seat 300 and the toilet lid 400 are pivotally supported with respect to the casing 200 so as to be freely opened and closed.

As shown in FIGS. 19 and 20, a nozzle unit 210 that can wash a “butt” of a user sitting on the toilet seat 300 and hot water to be supplied to the nozzle unit 210 are generated inside the casing 200. The hot water tank 100 that stores the water and the valve unit 250 are incorporated. The hot water tank 100 is as described above with reference to FIGS.
The nozzle unit 210 includes a cleaning nozzle 211 that injects water supplied from the hot water tank 100 toward a “butt” of the user.

  As shown in FIG. 20, the valve unit 250 is installed at the corner of the casing 200 behind the hot water tank 100. The valve unit 250 has an electromagnetic valve 251, and the presence or absence of water supply to the hot water tank 100 can be controlled by opening and closing the electromagnetic valve 251.

  Further, as shown in FIG. 18, a seating sensor 201 that detects that the user is sitting on the toilet seat 300 is provided on the upper portion of the casing 200. When the seating sensor 201 detects a user sitting on the toilet seat 300, when the user operates the operation unit 500 such as a remote controller, the cleaning nozzle 211 can be advanced into the bowl 801 of the toilet bowl 800. . In the toilet apparatus shown in FIG. 18, the cleaning nozzle 211 has entered the bowl 801.

  One or a plurality of water outlets (not shown) are provided at the tip of the cleaning nozzle 211. The washing nozzle 211 can wash water such as a “butt” of a user sitting on the toilet seat 300 by spraying water from a water outlet provided at the tip of the washing nozzle 211. In the present specification, “water” includes not only cold water but also heated hot water.

  The water supplied to the sanitary washing device 10 from a water supply source (not shown) is first guided to the valve unit 250. When the solenoid valve 251 of the valve unit 250 is open, the water supplied from the water supply source is guided into the tank 110 from the inflow portion 181 of the hot water tank 100 via the valve unit 250. The water supplied into the tank 110 is heated by the heater 120 to become hot water. Then, the water heated by the heater 120 in the tank 110 is guided from the water newly supplied from the inflow portion 181 to the cleaning nozzle 211 of the nozzle unit 210 through the vacuum breaker 183, for example.

Next, the internal structure of the sanitary washing apparatus according to this embodiment will be further described with reference to the drawings.
FIG. 21 is a schematic perspective view of the inside of the sanitary washing device according to the present embodiment as viewed from above.
21A is an enlarged schematic diagram before disassembling the upper tank 110a of the tank 110, and FIG. 21B is an enlarged schematic diagram after the upper tank 110a of the tank 110 is disassembled. In FIG. 21A and FIG. 21B, the valve unit 250 is omitted as appropriate for convenience of explanation.

  The hot water tank 100 has fixed portions 117a, 117b, and 117c, and is fixed to the casing 200 at the fixed portions 117a, 117b, and 117c. For example, the fixing portions 117a, 117b, and 117c are formed with fastening holes that can penetrate fastening members such as screws. The hot water tank 100 is fixed to the casing 200 by passing a fastening member such as a screw through the fastening hole and fastening the fastening member to the casing 200. In addition, about the fixed position and fixed number of the hot water tank 100 and the casing 200, it is not necessarily limited to the fixed position and fixed number shown to Fig.21 (a) and FIG.21 (b).

  The casing 200 has a retaining portion 220 that prevents the intermediate member 130 of the hot water tank 100 from coming out of the first through hole 111 a of the tank 110. The retaining portion 220 is, for example, brought into contact with a part of the intermediate member 130 or by pushing a part of the intermediate member 130 toward the inside of the tank 110 so that the intermediate member 130 is removed from the first through hole 111a. It can be prevented from coming off.

Next, an example of the retaining portion 220 according to the present embodiment will be described with reference to the drawings.
FIG. 22 is a schematic plan view of an example of the retaining portion of the present embodiment as viewed from above.
FIG. 23 is a schematic plan view of an example of the retaining portion of the present embodiment as viewed from the front. FIG. 24 is a schematic perspective view of an example of the retaining portion of the present embodiment as viewed obliquely from above.
22 and 24, the tank 110 is omitted as appropriate for convenience of explanation.

  As shown in FIGS. 23 and 24, the retaining portion 220 has a shape protruding upward from the bottom surface of the casing 200. Further, the retaining portions 220 are provided on both sides of the intermediate member 130 in a state where the hot water tank 100 is fixed to the casing 200, for example. The retaining portion 220 is in contact with the receiving portion 137 (see FIG. 10) of the intermediate member 130 in a state where the hot water tank 100 is fixed to the casing 200. Alternatively, the retaining portion 220 pushes the receiving portion 137 of the intermediate member 130 toward the inside of the tank 110. Therefore, the retaining portion 220 can prevent the intermediate member 130 from coming out of the first through hole 111a.

  According to this, it is possible to prevent the intermediate member 130 from coming out of the first through hole 111a without fixing the intermediate member 130 to the tank 110 with a fastening member such as a screw. Therefore, the intermediate member 130 can be easily displaced as seen from at least one of the outer peripheral surface 121 of the heater 120 and the inner wall surface 113a of the first through hole 111a of the tank 110.

  Thereby, even when warpage occurs in the tank 110, water leaks from between the inner wall surfaces 113a and 113b of the first and second through holes 111a and 111b of the tank 110 and the outer peripheral surface 121 of the heater 120. This can be prevented. That is, the sanitary washing device 10 according to the present embodiment can ensure sealing performance when the rod-shaped heater 120 is used as a heat source.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, etc. of each element provided in the hot water tank 100, the sanitary washing device 10, etc., the installation form of the intermediate member 130, the backup ring 140, the seal members 161, 162, etc. are limited to those illustrated. It can be changed as appropriate.
Further, for example, the intermediate member 130, the backup ring 140, and the seal members 161 and 162 may be provided not only at one end portion of the heater 120 but also at both end portions of the heater 120.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  DESCRIPTION OF SYMBOLS 10 Sanitary washing apparatus, 100 Hot water tank, 110 tank, 110a Upper tank, 110b Lower tank, 111 Through-hole, 111a 1st through-hole, 111b 2nd through-hole, 113, 113a, 113b Inner wall surface, 115 Notch 117a, 117b, 117c fixing part, 120 heater, 121 outer peripheral surface, 123 end face, 130 intermediate member, 131 projection part, 133 stopper, 135 engaging convex part, 137 receiving part, 140 backup ring, 141 engaging hole, 150 Holding member, 153 stopper, 155 fastening hole, 161 first seal member, 162 second seal member, 163 third seal member, 168 seal member, 181 inflow portion, 182 rectifier unit, 183 vacuum breaker, 185 float switch 186, bimetal, 188 temperature detection means, 200 casing, 201 seating sensor, 210 nozzle unit, 211 cleaning nozzle, 220 retaining portion, 250 valve unit, 251 solenoid valve, 300 toilet seat, 400 toilet lid, 500 operation unit, 800 toilet bowl, 801 bowl

Claims (5)

A hollow container having a pair of through holes and formed of a resin;
A rod-shaped heater attached to the hollow container, at least part of which is disposed inside the hollow container, both end portions of which pass through the through-hole and are exposed to the outside of the hollow container;
At least at one end of the heater, an intermediate member inserted between the outer peripheral surface of the heater and the inner wall surface of the through hole;
A seal member that is provided between the intermediate member and the hollow container and between the intermediate member and the heater, and seals between the outer peripheral surface of the heater and the inner wall surface of the through hole;
A hot water tank characterized by comprising   The intermediate member divides a gap between the outer peripheral surface of the heater and the inner wall surface of the through hole into two in the radial direction of the heater, and between the intermediate member and the inner wall surface of the through hole. The hot water tank according to claim 1, wherein the hot water tank is displaceable by providing a gap in at least one of an outer peripheral surface of the heater and an inner wall surface of the through hole. The hollow container further includes a retaining piece that prevents the intermediate member from slipping out between the outer peripheral surface of the heater and the inner wall surface of the through hole,
The hot water tank according to claim 1 or 2, wherein the intermediate member is engaged with the retaining piece.   The hot water tank according to claim 1, wherein the intermediate member holds the heater slidable in the axial direction by the seal member provided between the hollow container and the heater. The hot water tank according to any one of claims 1 to 4,
A base member that has a retaining portion that prevents the intermediate member from coming off from between the outer peripheral surface of the heater and the inner wall surface of the through-hole, and that fixes the hot water tank;
A sanitary washing device characterized by comprising:

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