JPH06300155A - Faucet - Google Patents

Abstract

PURPOSE:To provide a faucet which is high-precise and suitable for mass production by a method wherein a different in a step having an outside diameter gradually decreased toward a tip in an insertion direction is formed in the outer peripheral surface of an internal member and a gap is provided between external and external members. CONSTITUTION:A mixing valve casing 62 and a switch valve casing 66 are formed in a shape where an outside diameter is steppedly decreased in an insertion direction. Thus, formation through integral injection molding is easy to make and the casings are formed in a shape suitable for mass production. Simultaneously, when the mixing valve casing 62 or the switch valve casing 66 is inserted in an outer casing 50, a distance by which a seal member is laterally displaced can be decreased. For example, an O-ring 191c installed to the insertion end of a mixing valve cartridge 70 is arranged in a position deep in the outer casing 50 but may be laterally displaced by several millimeters from the difference 54b in a step of the outer casing 50 in a state to make contact with the inner peripheral surface of the outer casing 50. This constitution causes reduction of the damage of a seal member.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a faucet.

[0002]

2. Description of the Related Art Heretofore, as this type of faucet, there is a hot and cold water mixing faucet capable of spitting hot water or water alone, as well as mixing and sprinkling hot water. This hot and cold water mixing faucet is provided with a hot and cold water mixing mechanism for changing the temperature of the mixed hot and cold water and a switching mechanism for switching the hot and cold water inside the casing. In addition to the hot and cold water passages from the hot and cold water supply pipes to the hot and cold water mixing mechanism, the hot and cold water mixing passage from the hot and cold water mixing mechanism to the water outlet uses the inner surface of the casing. Is formed.

By the way, since the hot and cold water mixing faucet can change the temperature of the mixed hot and cold water to be discharged, it is rapidly spreading as a part of creating a comfortable environment around the water. For example,
It is installed not only in kitchens and bathrooms of ordinary households, but also in bathrooms of hotels, department stores, toilets at airports, etc.

Further, the shape of the hot and cold water mixing faucet itself is required to be designed according to the atmosphere of various installation places. In order to meet such demands, casings having various shapes are prepared for the appearance of the hot and cold water mixing faucet, and various kinds of internal members are required in accordance with the internal shape of the casing.

[0005]

However, the shapes of the inner peripheral surface of these designed casings and the outer peripheral surface of the inner member matching them are complicated in order to secure passages for hot water, water, and mixed hot water. However, there is a problem in that it is difficult to perform integral molding because a large uneven portion is required. Further, if the shape is complicated, quality control for the shape and strength of each part is also required. In this case, if sufficient quality is maintained, the yield becomes lower as the member becomes more complicated.

The water faucet of the present invention solves these problems,
It was made for the purpose of making a faucet with high precision and suitable for mass production, and adopted the following constitution.

[0007]

The water faucet according to claim 1 is
An internal member having an inlet and an outlet for a fluid, a passage communicating between the inlet and the outlet, an insertion hole for inserting the internal member, and a storage space communicating with the insertion hole and storing the internal member In the water faucet including an external member having an outer member, the inner member is formed in the outer member with a step of one step or more in which the outer diameter decreases toward the distal end in the insertion direction, and the inner member is housed in the housing space of the outer member. The gist of the present invention is to form a gap between the outer peripheral surface of the inner member and the inner peripheral surface of the outer member so as to communicate with the inlet and / or the outlet of the inner member.

Here, in the water faucet according to claim 1, the internal member may be provided with a valve device for controlling a fluid flowing in a passage of the internal member. in this case,
The valve device may have a housing having a predetermined shape that is inserted into the passage of the internal member, and may have a configuration in which at least a part of the function of controlling the fluid is housed in the housing.

Further, in the water faucet according to any one of claims 1 to 3, when the insertion hole is provided with a valve device for controlling a fluid flowing in a passage of the internal member, the insertion device and the valve device are provided. It may be configured to be a communication port that communicates with the drive unit of the valve device, a fluid inlet or outlet of the external member, or a fixing unit when fixing the faucet to another structure.

In the water faucet according to any one of claims 1 to 4, the internal member may be made of resin.

The water faucet according to any one of claims 1 to 5, further comprising a seal member which is provided between an inner peripheral surface of the outer member and an outer peripheral surface of the inner member and which seals the gap. You can also On the contrary, in the water faucet according to any one of claims 1 to 5, between the end surface of the inner member or the stepped end surface formed on the outer peripheral surface of the inner member and the inner peripheral surface of the outer member. It may be configured to include a seal member that is provided and that blocks the gap.

[0012]

In the water faucet according to the first aspect of the present invention configured as described above, the inner member has a step having an outer diameter that decreases toward the distal end in the insertion direction on the outer peripheral surface. A gap is formed between the members. A part of this gap is used as a fluid passage.

Further, the water faucet according to the first aspect can be used in a state where it is generally used for fluids such as water, hot water, mixed hot water, soapy water, chemical water, mousse, alcohol and saline. Including faucet. Further, the invention is not limited to the case where the faucet is provided with the valve device, and the case where the faucet body is not provided, for example, the case where the faucet body is not provided with the valve device and the water shutoff valve is provided in the shower head is also included.

In the water faucet according to claim 2, the flow of the fluid is stopped with respect to the fluid flowing in the passage provided in the internal member of the valve device.
Controls such as switching, mixing of two or more kinds of fluids, adjustment of mixing ratio, and adjustment of flow velocity.

In the water faucet according to the third aspect of the present invention, the valve device is housed in the housing having a predetermined shape, so that the faucet can be easily assembled and the case where the valve device is defective can be easily dealt with.

In the water faucet according to a fourth aspect, the insertion hole is also used as an external member by using the insertion hole as a communication port of the operating portion of the valve device, a fluid inlet / outlet, and a fixing portion for fixing the water faucet to another structure. The number of holes provided is reduced and the strength of the external member is maintained.

In the water faucet according to the fifth aspect, the weight of the entire water faucet can be reduced by forming the inner member with resin. This facilitates the transportation of faucets from the manufacturing site to the place of use and the handling of faucet installation work. Here, the resin used for the material of the internal member is generally called engineering plastic, and is a plastic excellent in heat resistance, dust resistance, chemical resistance, flame resistance, and the like. Numerically, it is a plastic having a tensile strength of about 50 MPa or more, an impact strength of about 50 J / m or more, and a heat deformation temperature of about 100 ° C. or more (Plastic molding terminology dictionary). For example, polyamide (PA), polycarbonate (PC), polyacetal (POM),
So-called general-purpose engineering plastics such as modified polyphenylene ether (PPE) and polyester, and polyphenylene sulfide (PPS), polyarylate (PAR), polyetherimide (PEI), polysulfone (PSF), polyethersulfone (PES), polyetherketone (PEK), polyetheretherketone (PEEK), polyimide (PI), polyamideimide (PAI), fluororesin, liquid crystal plastic, so-called super engineering plastic such as thermosetting resin having excellent impact resistance and chemical resistance is used. It is possible. Further, it is also possible to form it by adding glass fiber to these resins or by mixing two kinds or three kinds or more.

When the inner member is made of resin, the surface roughness of the outer peripheral surface of the inner member is determined by the surface roughness of the mold during injection molding, so that the surface of the mold is smooth. By doing so, it becomes easy to smooth the surface of the outer peripheral surface of the formed internal member. Therefore, secondary processing such as grinding / polishing is not necessary for a portion that comes into contact with the seal member such as the O-ring.

When the inner member is made of resin,
The resin is not limited to one formed by a single resin, and may be formed as two or more layers made of different resins, or may have layers made of different resins on the outer peripheral surface or the inner peripheral surface.

In the water faucet according to claim 6, since the outer diameter of the inner member gradually decreases toward the tip in the insertion direction, when the inner member is fitted into the outer member, it is installed on the outer peripheral surface of the inner member. A seal member such as an O-ring may be brought into contact only in the vicinity of the seal portion, which prevents displacement and damage of the seal member.

In the water faucet according to the seventh aspect, when the inner member is fitted and inserted in the outer member, the seal member does not come into contact with the outer member other than the seal portion, thereby preventing the seal member from being displaced or damaged. Moreover, since the pressure-bonding strength in the insertion direction can be adjusted, an optimum sealing effect can be obtained.

[0022]

EXAMPLES In order to further clarify the constitution and operation of the present invention described above, a hot and cold water mixing faucet as a preferred example of the present invention will be described below.

FIG. 1 is a plan view of a hot and cold water mixing faucet according to an embodiment of the present invention. This hot and cold water mixer has a main body 10 and
A water supply foot fitting 20 connected to a water pipe (not shown) and a hot water supply foot fitting 40 connected to a pipe from a water heater (not shown) are provided. The main body 10 accommodates main functional components in an outer casing 50, and has a temperature adjustment handle 80 and a switching handle 160 at both ends thereof.

FIG. 2 is a view showing the structure of the water supply leg fitting 20.
2 is a cross-sectional view taken along line I-I of FIG. The water supply leg fitting 20 is the water shutoff valve 3
A housing 22 in which 0 is incorporated, a connection fitting 24 connected to a water inlet 51 of an outer casing 50 described later,
A fastener 28 for connecting and fixing the connection fitting 24 and the housing 22 is provided. The connecting fitting 24 is the outlet 2 at one end.
At 9, fitted into the water inlet 51 of the outer casing 50,
The tip thereof is electrically connected to a water channel 140 formed in the outer casing 50 described later. The other end has a threaded portion, which is connected and fixed to the housing 22 by screwing the threaded portion and the fastener 28 together. At the other end of the housing 22,
The entrance 21 is formed, and a threaded portion is provided around the entrance 21 so as to be screwed into the water pipe. In addition, connection fitting 2
A resin packing 26 is mounted between the housing 4 and the housing 4, and is sealed so as to be liquid-tight.

Water shutoff valve 30 incorporated in housing 22
Is a cap 34 that is liquid-tightly fastened to the housing 22.
And a valve body 32 guided by the cap 34 and the housing 22, and a strainer 38. The valve element 32 has a guide portion 35 with the housing 22 and an end portion 36, and the guide portion 35 has an opening 3 that serves as a passage for water when water is passed.
7 is provided. The guide portion 35 includes the housing 22.
, And by rotating the valve element 32,
The valve body 32 is configured to slide in the axial direction. Therefore, by rotating the valve body 32 to attach and detach the end portion 36 and the valve seat 23 formed in the housing 22,
Stop or pass water. When passing water, the end 36 and the valve seat 23
Water that has flowed in through the gap between and passes through the opening 37, removes dust by the strainer 38, and then flows into the main body 10 through the outlet 29.

The hot water supply foot fitting 40 has the same structure as the water supply foot fitting 20, is connected to a hot water supply pipe (not shown), and introduces hot water into a hot water passage 130 (see FIG. 3) described later. The description of the structure of the hot water supply foot fitting 40 will be omitted.

FIG. 3 is a sectional view taken along line II-II of FIG. As shown in the figure, the outer casing 50 of the main body 10
Is a mixing valve casing 62 housed in the outer casing 50, a switching valve casing 66 also housed in the outer casing 50, a mixing valve cartridge 70 housed in the mixing valve casing 62, and a switching valve casing. The switching valve cartridge 150 housed in the container 66, the currant outlet 170, and the shower outlet 180 are provided. Further, the outer casing 50 is provided with a water inlet 51 connected to the water supply leg fitting 20, a hot water inlet 52 connected to the hot water supply foot fitting 40, a curran outlet 170, and a shower outlet 180. On the inner peripheral surface of the outer casing 50, step portions 54a, 54 are formed from both open ends toward the inside.
b, 54c, 56a, 56b, 56c, 56d are formed.

On the other hand, on the outer peripheral surface of the mixing valve casing 62, an O-ring convex portion 63 for sealing with the inner peripheral surface of the outer casing 50, and a step portion 64 between the convex portion 63 and the insertion end. And are formed. A slight clearance is provided between the convex portion 63 and the inner peripheral surface of the outer casing 50, and is sealed by the O-ring 191a. In addition, a slight clearance is provided between the outer peripheral surface of the step portion 64 having a larger outer peripheral radius and the inner peripheral surface of the outer casing 50 having a smaller inner diameter of the step portion 54a, and is sealed by the O-ring 191b. Has been done. Therefore, the convex portion 63 of the mixing valve casing 62 and the step portion 54a of the outer casing 50 form an annular space, which is
It is used as the hot water flow path 130. Further, a slight clearance is also provided between the outer peripheral surface of the insertion end of the mixing valve casing 62 and the inner peripheral surface of the outer casing 50 on the side of the stepped portion 54b having the smaller inner diameter, which is also sealed by the O-ring 191c. There is. Therefore, the mixing valve casing 6
An annular space is also formed between the second step portion 64 and the step portion 54b of the outer casing 50, and this is the water flow path 142.
Used as.

Similarly, a convex portion 67 and step portions 68a and 68b are formed on the outer peripheral surface of the switching valve casing 66, and the convex portion 67 and the step portion 56 of the outer casing 50 are formed.
the flow path 18 of the mixed hot water to the shower outlet 180 by
4. Step 68a and step 56b of the outer casing 50
The water flow path 140, the stepped portion 68b and the stepped portion 56c of the outer casing 50 form a mixed hot water flow passage 174 to the Karan outlet 170. Also here, in order to block each flow path, O is not provided on each step and the outer circumference of the insertion end.
Rings 196a, 196b, 196c, 196d are provided.

A passage 58 is formed in the outer casing 50 so that the water flow passage 140 and the water flow passage 142 communicate with each other. In addition, the outer casing 50 has a Karan outlet 17
A passage 176 is formed so that the flow path 174 of the mixed hot and cold water to 0 and the Karan outlet 170 communicate with each other.

Water flowing from the water inlet 51 into the water flow passage 140 flows into the mixing valve cartridge 70 through the passage 58 and the water flow passage 142, and hot water flows from the hot water inlet 52,
It flows into the mixing valve cartridge 70 through the hot water flow path 130. Hot water is mixed in the mixing valve cartridge 70, and the mixed hot water passes through the switching valve cartridge 150,
It flows out from the Karan outlet 170 or the shower outlet 180. The structures of the mixing valve cartridge 70 and the switching valve cartridge 150 will be described in detail later.

Outer casing 50, mixing valve casing 6
2 and the switching valve casing 66 are made of polyphenylene sulfide (P
PS). The PPS used for the outer casing 50 and the like in the examples is a plastic having particularly excellent heat resistance, hot water resistance, and pressure resistance. In the embodiment, the outer casing 50 and the like are formed of PPS, but it goes without saying that plastics other than PPS can be used as long as they are excellent in performance. For example, polyimide (PI), polyamideimide (PAI), polyetheretherketone (PEEK), polyethersulfone (PES), polysulfone (PSF), polyarylate (PAR), polyetherimide (PEI), etc. can also be used. Is.

Next, the mixing valve cartridge 70 housed in the mixing valve casing 62 will be described. The mixing valve cartridge 70 includes a temperature-sensitive spring chamber 90 that mixes hot and cold water,
The bias spring chamber 100 and the slide chamber 120 are provided. In the mixing valve cartridge 70, a hot water flow path 134 is formed by the mixing valve casing 62, and a hot water valve seat having a hot water port 138 which is a hot water passage from the hot water flow path 134 to the bias spring chamber 100. 136 is formed. The hot water flow path 134 communicates with the hot water flow path 130 via a hole 133 formed in the mixing valve casing 62. Similarly, in the mixing valve cartridge 70, a water flow path 144 is formed by the mixing valve casing 62 and
A water side valve seat 146 having a water side port 148 which is a passage of water from the water flow path 144 to the temperature sensitive spring chamber 90 is formed. The water flow path 144 communicates with the water flow path 142 via a hole 143 formed in the mixing valve casing 62.

Between the hot water valve seat 136 and the hot water valve seat 146, a movable valve body 110 which is detachably attached to the hot water valve seat 136 and the hot water valve seat 146 is slidably fitted. The movable valve element 110 includes a temperature sensitive spring 92 housed in a temperature sensitive spring chamber 90.
And the spring force of the bias spring 102 housed in the bias spring chamber 100, and the position is determined by the balance of these spring forces. Further, the movable valve body 110 is formed with a communication hole 111 that communicates the bias spring chamber 100 and the temperature sensitive spring chamber 90.

Therefore, the hot water that has flowed into the hot water passage 134 is between the movable valve body 110 and the hot water valve seat 136, and the hot water port 13 is provided.
8 and flows into the bias spring chamber 100, then passes through the communication hole 111 and flows into the temperature-sensitive spring chamber 90. On the other hand, the water flowing into the water flow path 144 passes through the water side port 148 between the movable valve body 110 and the water side valve seat 146 and flows into the temperature sensitive spring chamber 90. Therefore, this temperature-sensitive spring chamber 9
Hot and cold water is mixed within 0, and the mixing ratio thereof is determined by the ratio of the gap between the movable valve body 110 and the valve seats on both sides thereof. The hot and cold water mixed in the temperature-sensitive spring chamber 90 of the mixing valve cartridge 70 flows into the flow path 174 or the flow path 184 through the switching valve cartridge 150, which will be described later, and the Karan outlet 170.
Alternatively, water is discharged from the shower outlet 180.

The temperature sensitive spring 92 is made of metal whose elastic coefficient changes according to temperature. An alloy belonging to the category of shape memory alloy (SMA) made of nickel-titanium alloy is known as a metal material whose elastic coefficient changes with temperature. Since the SMA changes the elastic coefficient according to the temperature, the spring constant of the temperature sensitive spring 92 changes according to the temperature. On the other hand, the bias spring 102 is made of an ordinary spring material having a constant spring constant with respect to temperature.

In the slide chamber 120, the bias spring 10
The second spring bearing 122 is axially displaceable and non-rotatably spline-fitted inside the mixing valve cartridge 70, and the worm 124 fixed to the temperature adjusting handle 80 meshes with the inner screw of the spring bearing 122. ing. Therefore, by rotating the temperature adjusting handle 80, the worm 124 rotates, the spring bearing 122 slides in the axial direction, and the bias amount of the bias spring 102 changes. As a result, the balance between the temperature sensitive spring 92 and the bias spring 102 is broken, and the movable valve body 110 is displaced to a new balanced position, and a new gap is created between the movable valve body 110 and the valve seats on both sides thereof. The mixing ratio of the hot and cold water changes so that the temperature of the mixed hot and cold water changes.

After the hot water outlet temperature is set by adjusting the biasing amount of the bias spring 102 by the temperature adjusting handle 80, the hot water outlet temperature is adjusted by the temperature sensitive spring 92 and the bias spring 102 as described below.

After the start of tapping, the mixed hot and cold water reaches the set temperature,
When conditions such as the hot water supply temperature from the water heater, the tap water temperature or the flow rate are in a steady state, the movable valve body 110 causes the spring force and bias of the temperature sensitive spring 92 generated by the temperature of the mixed hot water in the temperature sensitive spring chamber 90. The position is determined by the balance with the spring force of the spring 102, and it is stationary. From this state, conditions such as hot water supply temperature from the water heater, tap water temperature or flow rate fluctuate due to disturbance, and when the temperature of the mixed hot water becomes higher than the set temperature,
The temperature-sensitive spring 92 changes the spring constant to the larger side according to this temperature change, and increases the spring force. As a result, the balance between the spring force of the temperature-sensitive spring 92 and the spring force of the bias spring 102 is broken, and the temperature-sensitive spring 92 moves toward the bias spring 10.
The preload of 2 is increased and the movable valve body 110 is displaced leftward in FIG. As the movable valve body 110 is displaced, the proportion of hot water decreases and the temperature of the mixed hot water decreases. On the contrary, when the temperature of the mixed hot water becomes lower than the set temperature, the temperature sensitive spring 92
Changes the spring constant to a smaller side according to this temperature change, and reduces the spring force. As a result, the balance between the spring force of the temperature sensitive spring 92 and the spring force of the bias spring 102 is lost, and the bias spring 102 moves the movable valve element 110 to the right in FIG. Displace. As the movable valve body 110 is displaced, the proportion of water decreases and the temperature of the mixed hot water rises. Due to the action of the temperature sensitive spring 92, the temperature of the mixed hot water is maintained at the set temperature.

The switching valve cartridge 150 housed in the switching valve casing 66 has a switching valve 152 for rotatably housing in the housing 153 for switching the water discharge / stopping of the mixed hot water and the water discharge amount. Prepare. Further, an annular flow path 172 for allowing the mixed hot water to flow into the flow path 174 and an annular flow path 182 for allowing the mixed hot water to flow into the flow path 184 are provided on the outer periphery thereof. The switching valve cartridge 150 is watertightly housed in the inner casing 60, so that the flow passage 172 and the flow passage 174 are separated from each other.
The switching valve casing 66 communicates with each other through a hole 173 formed in the casing. Similarly, the flow path 182 and the flow path 184 communicate with each other through a hole 183 formed in the switching valve casing 66. The switching valve 152 is provided with an inflow chamber 154 into which hot water mixed in the temperature-sensitive spring chamber 90 flows from the end surface of the switching valve 152. The switching valve 152 has a valve body so as to cover the inflow chamber 154. 155 is attached. On the other hand, in the housing 153, a hot and cold water passage hole 156 that connects the inflow chamber 154 and the flow path 172, and the inflow chamber 154.
A hot and cold water passage hole 157 that communicates with the flow path 182 is bored. The hot and cold water passage holes 156 and 157 change their opening areas through the valve body 155 by the rotation of the switching valve 152. Further, the switching valve 152 is the switching handle 16
It is fixed at 0, and the switching valve 152 is rotated by rotating the switching handle 160.

Therefore, by rotating the switching valve 152 via the switching handle 160 and opening the hot and cold water passage hole 156 by the valve body 155 of the switching valve 152, the mixed hot and cold water having the water discharge amount corresponding to the opening area can be formed. The flow path 172, the hole 173 of the switching valve casing 66, the flow path 174, and the calan outlet 17
Water is discharged from 0. Further, the hot and cold water passage hole 157 is opened by the valve body 155, so that the mixed hot and cold water having a discharge amount corresponding to the opening area is passed from the shower outlet 180 through the flow passage 182, the hole 183 of the switching valve casing 66, and the flow passage 184. It is spouted. Hot water passage holes 156 and 15 are formed by the valve body 155.
Water is stopped by not opening any of the items. Therefore, by the switching valve cartridge 150 described above, the hot water discharge / stopping of the mixed hot water from the Karan outlet 170, the hot water discharge / stopping of the mixed hot water from the shower outlet 180 are switched, and the water discharge amount is adjusted.

According to the hot and cold water mixing faucet of the embodiment described above, the mixing valve casing 62 and the switching valve casing 66.
Since the outer diameter has a shape that gradually decreases toward the insertion direction, it becomes easy to form by integral injection molding, and a shape suitable for mass production can be obtained. Also,
When the mixing valve casing 62 and the switching valve casing 66 are shaped so that their outer shapes are gradually reduced in the insertion direction, a sealing member is provided when the mixing valve casing 62 or the switching valve casing 66 is inserted into the outer casing 50. The lateral displacement can be reduced. For example, the O-ring 191c installed at the insertion end of the mixing valve cartridge 70 is provided at a deep position of the outer casing 50, and while contacting the inner peripheral surface of the outer casing 50 from the step portion 54b of the outer casing 50 by several millimeters. All you have to do is laterally offset. Therefore, damage to the seal member can be reduced.

Since the mixing valve casing 62 and the switching valve casing 66 are made of PPS, the total weight of the hot and cold water mixing faucet is reduced, and the hot and cold water mixing faucet can be easily handled during transportation and installation work. Furthermore, the outer casing 5
Since 0 is also formed of PPS, the weight of the hot and cold water mixing faucet as a whole can be reduced. Further, since the mixing valve casing 62 and the switching valve casing 66 are formed of PPS, the surfaces can be made smooth, and it is possible to assemble them in a short time without the need to provide a step of grinding or polishing the outer peripheral surface. Furthermore, the outer casing 50 is also P
Since it is formed of PS, there is no need to grind or polish the inner peripheral surface.

In this embodiment, the outer casing 50 is made of PP.
Although it is formed of S, it is formed by using a metal material,
For example, a mold may be used or a metal pipe may be used. Further, although the temperature-sensitive spring 92 of SMA is used to control the temperature of the mixed hot water, a structure using a wax element may be used. Of course, the temperature control may not be performed by the temperature sensitive element. Further, in the present embodiment, the water is spouted by selecting the curran and the shower, but the water may be spouted only by the curran or only by the shower.

Although the outer casing 50 has a cylindrical outer shape, a polygonal prism shape or an elliptic cylinder shape is also suitable. The external shapes of the mixing valve casing 62 and the switching valve casing 66, which are internal members, do not have to be circular, and may be polygonal or elliptical. Further, since the mixing valve cartridge 70 and the switching valve cartridge 150 are of a cartridge type suitable for other faucets, the inner diameters of the inner peripheral surfaces of the mixing valve casing 62 and the switching valve casing 66 are constant, but It may be a configuration in which uneven portions are provided on the peripheral surface.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a sectional view of the hot and cold water mixing faucet of the second embodiment. The hot and cold water mixing faucet of the second embodiment includes the flow passages formed by the outer casing 50 and the mixing valve casing 62 of the hot and cold water mixing faucet of the first embodiment, and the outer casing 50 and the switching valve casing 66. It has the same structure except that the structure of each flow path formed is different. Therefore, the outer casing 50a, the mixing valve casing 62a and the switching valve casing 66a of the hot and cold water mixing faucet of the second embodiment will be described below, and the other first
The description of the same components (mixing valve cartridge 70, switching valve cartridge 150, etc.) as in the embodiment will be omitted.

On the inner peripheral surface of the outer casing 50a, step portions 55a, 55b, 55c, 5 are formed from the open end portion toward the inside.
7a, 57b, 57c are formed. On the outer peripheral surface of the mixing valve casing 62a, an O-ring convex portion 63a,
Step portions 65a and 65b are formed. Step 65
a is the outer diameter of the larger one (left side of the step portion 65a in FIG. 4) on the left and right of the step of the step portion 65a (left and right in FIG. 4) than the inner diameter of the larger portion at the step portion 55a of the outer casing 50. It is formed by a few millimeters, which is larger by a few millimeters than the inner diameter of the smaller one.
The outer diameter (on the right side of a) is the step portion 55 of the outer casing 50.
The inner diameter is smaller by a few millimeters.
Therefore, by engaging the end surface of the step portion 65a of the mixing valve casing 62 and the end surface of the step portion 55a of the outer casing 50, the left and right of the step portion 65a (left and right in FIG. 4).
Since an annular space is formed in the hot water flow path 130a
Can be used as the water flow path 142a. Further, a groove for installing an O-ring is formed on the end surface of the step portion 65a of the mixing valve casing 62, and the O-ring 192b installed here is screwed between the outer casing 50 and the mixing valve casing 62a. Is pressed against the end surface of the step portion 55a of the outer casing 50 by the flow path 130a and the flow path 14a.
Seal with 2a. A groove for an O-ring is also formed on the end surface of the stepped portion 65b of the mixing valve casing 62, and the installed O-ring 192c is attached to the outer casing 5.
The flow path 142a is sealed by being pressure-bonded to the end surface of the step portion 55b of 0.

On the outer peripheral surface of the switching valve casing 66, step portions 69a and 69b having the same shape as the step portion 65a formed on the outer peripheral surface of the mixing valve casing 62 are formed. The step portions 69a and 69b form the outer casing 50.
By engaging with the step portions 57a and 57b, respectively, an annular space is formed on the left and right of the step portions 69a and 69b (left and right in FIG. 4). The flow path 184a of the mixed hot water to the shower outlet 180, the water flow path 140a, and the Karan outlet 17
A flow path 174a of mixed hot water to 0 is formed. The O-rings 197b and 197 installed on the end faces of the steps
c, 197d and sealed.

According to the hot and cold water mixing faucet of the second embodiment described above, an O-ring is installed between the end surface of the step portion of the outer casing 50a and the end surface of the step portion of the mixing valve casing 62a or the switching valve casing 66a, Since each flow path is sealed, the load applied to the O-ring can be adjusted and the sealing force can be increased. Therefore, liquid tightness can be improved. Also, the O installed on the end face of the step
The ring includes the mixing valve casing 62a and the outer casing 5
Since it does not come into contact with the inner peripheral surface of the outer casing 50a when it is inserted into the outer casing 50a, it is possible to prevent damage due to contact of the O-ring. The other effects are the same as in the first embodiment.

Next, the outer casings 50 and 50a and the mixing valve casing 62 in the first and second embodiments will be described.
A method of forming a flow path and a method of sealing the flow path by combining the switch 62a or the switching valve casings 66, 66a will be described. FIG. 5 is a schematic diagram showing the formation of flow paths C and D by the external member A and the internal member B and the sealing of the flow paths. The outer member A shown in the figure is a schematic representation of the outer casing 50, 50a in the embodiment, and the inner member B is a schematic representation of the mixing valve casing 62, 62a or the switching valve casing 66, 66a in the embodiment. It was done.

In FIG. 5 (a), the inner member B is provided with a stepped portion on the outer peripheral surface of which the outer diameter gradually decreases in the insertion direction into the outer member A. Is provided with a step on its inner peripheral surface corresponding to the step on the outer peripheral surface of the internal member B. The flow paths C and D are formed by combining the steps of the inner member B and the steps of the outer member A. The seal members E, F, G are installed between the inner peripheral surface of the outer member A and the outer peripheral surface of the inner member B at each step portion, and block the flow paths C, D. The combination of the outer casing 50 and the mixing valve casing 62 or the switching valve casing 66 of the first embodiment is the formation and sealing of the flow path by this method.

In FIG. 5 (b), the inner member B is provided with a step portion on the outer peripheral surface of which the outer diameter gradually decreases in the insertion direction of the outer member A. Is provided with a step on the inner peripheral surface thereof according to the length between the steps on the outer peripheral surface of the internal member B. By combining the steps of the inner member B and the steps of the outer member A, the flow paths C and D are formed. The seal members F and G are installed on the end faces of the respective stepped portions of the inner member B and pressed against the end faces of the corresponding stepped portions of the outer member A, whereby the flow paths C and D are formed.
Shut off. The combination of the outer casing 50a and the mixing valve casing 62a or the switching valve casing 66a of the second embodiment is the formation and sealing of the flow path by this method.

In FIG. 5 (c), the inner member B is provided with a step portion on the outer peripheral surface of which the outer diameter gradually decreases in the insertion direction into the outer member A. Is provided with a convex portion on the inner peripheral surface thereof, which comes into contact with the stepped portion on the outer peripheral surface of the internal member B. By combining the step of the internal member B and the convex portion of the external member A, the flow path C,
D is formed. The seal members F and G are installed between the outer peripheral surface of the inner member B and the convex portion of the outer member A at each step portion, and block the flow paths C and D. In addition, in FIG.
The inner member B has only one step, and the outer member is provided with a plurality of protrusions having the same length.
Form D. The seal members F and G are installed between the convex portion of the outer member A, the inner member B, and the outer peripheral surface, and shut off the flow paths C and D.

In the flow path forming method and the flow path sealing method using the combination of the external member A and the internal member B described above, the faucet is formed by the single flow path forming method and the single flow path sealing method. Of course, it is not necessary, and it is of course suitable to use a plurality of forming methods and sealing methods.

The embodiment of the present invention has been described above.
The present invention is not limited to such an embodiment. For example, the outer casing 50 is made of a metal material, the mixing valve casing 62 or the switching valve casing 66 is made of a metal material, and the like. Needless to say, the present invention can be implemented in various modes without departing from the scope of the present invention.

[0056]

As described above, in the faucet according to the first aspect, the outer member and the inner member have a stepped shape whose outer diameter decreases toward the tip in the insertion direction on the outer peripheral surface of the inner member. A gap can be formed between the and, and a part of this gap can be used as a passage for the fluid.

In the water faucet according to the second aspect, since the valve device is provided, the flow of the fluid is stopped, switched, the two or more kinds of fluids are mixed, and the mixing ratio of the fluids is changed with respect to the fluid flowing in the passage provided in the internal member. Various controls such as adjustment and flow rate adjustment can be performed.

In the water faucet according to the third aspect, since the valve device is housed in the housing having a predetermined shape, the valve device can be assembled separately from the faucet assembly. Also, when assembling the valve device to the faucet, the number of parts can be reduced, so that the faucet can be easily assembled. Further, even if the valve device is defective, the valve device can be easily replaced.

In the water faucet according to the fourth aspect, the insertion hole is also used as a communication port of the operating portion of the valve device, a fluid inlet / outlet, and a fixing portion for fixing the water faucet to another structure, so that it is provided in an external member. The holes can be reduced, and as a result, the strength of the external member can be maintained.

In the water faucet according to the fifth aspect, since the internal member is formed of resin, the specific gravity is smaller than that of the metal material, the weight of the whole water faucet can be reduced, and the water faucet can be easily handled. And Further, the surface roughness of the outer peripheral surface of the internal member is determined by the roughness of the surface of the mold at the time of injection molding. Therefore, by smoothing the surface of the mold, the surface of the outer peripheral surface of the internal member to be formed. Can be smoothed. Therefore, it is possible to eliminate the need for secondary processing such as grinding / polishing on the portion where the seal member such as the O-ring contacts. Further, since the shape of the internal member can be made simple, in this case, the injection-integrated molding becomes easy and mass production is possible.

In the water faucet according to the sixth aspect, when the inner member is fitted and inserted into the outer member, the outer diameter of the inner member is gradually reduced toward the tip in the insertion direction. Therefore, the faucet is installed on the outer peripheral surface of the inner member. A seal member such as an O-ring may be brought into contact only in the vicinity of the seal portion, and the displacement and damage of the seal member can be prevented.

In the water faucet according to the seventh aspect, when the inner member is fitted and inserted into the outer member, the seal member does not come into contact with the outer member other than the seal portion, and the displacement and damage of the seal member are prevented. You can Further, since the pressure-bonding strength of the internal member in the insertion direction can be adjusted, the pressure-bonding strength suitable for the seal member can be obtained, and the optimum sealing effect can be obtained.

[Brief description of drawings]

FIG. 1 is an external plan view of a hot and cold water mixing faucet according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view including a water supply leg fitting 20 of the hot and cold water mixing faucet of the first embodiment.

FIG. 3 is a sectional view of the main body of the hot and cold water mixing faucet of the first embodiment.

FIG. 4 is a sectional view of a main body of a hot and cold water mixing faucet according to a second embodiment.

FIG. 5 is a schematic diagram showing formation of flow paths C and D by an external member A and an internal member B and sealing of the flow paths in the first and second embodiments.

[Explanation of symbols]

 10 ... Main body 20 ... Water supply leg fitting 21 ... Inlet 22 ... Housing 23 ... Valve seat 24 ... Connection fitting 26 ... Packing 28 ... Fastener 29 ... Exit 30 ... Water stop valve 32 ... Valve body 34 ... Cap 35 ... Guide part 36 ... End 37 ... Opening 38 ... Strainer 40 ... Hot water supply metal fittings 50, 50a ... Outer casing 51 ... Water inlet 52 ... Hot water inlet. Exits 54a, 54b, 54c ... Stepped portions 55a, 55b, 55c ... Stepped portions 56a, 56b, 56c, 56d ... Stepped portions 57a, 57b, 57c ... Stepped portions 58 ... Passages 59a, 59b ... Threaded portions 62, 62a ... Mixing valve casing 63, 63a ... Convex portion 63c ... Threaded portion 64 ... Step portion 65a, 65b ... Step portion 66, 66a ... Switching valve casing 67, 67a ... Projection portion 67c ... Thread portion 68a, 68b ... Step portion 69a, 69b, 69c ... Step portion 70 ... Mixing valve cartridge 80 ... Temperature control handle 90 ... Temperature sensitive spring chamber 100 ... Bias spring chamber 110 ... Movable valve body 111 ... Communication hole 120 ... Slide chamber 124 ... Worm 130, 130a ... Hot water flow path 133 ... Hole 134 ... Hot water flow path 136 ... Hot water side valve seat 138 ... Hot water side port 140, 140a ... Water flow path 142, 142a ... Water channel 143 ... Hole 144 ... Water channel 146 ... Water side valve seat 148 ... Water side port 150 ... Switching valve cartridge 150 152 ... Switching valve 153 ... Housing 154 ... Inflow chamber 155 ... Valve body 156 ... Hot water passage hole 157 ... Hot water passage Hole 160 ... Switching handle 160 170 ... Callan outlet 172 ... Flow path 173 ... Hole 174, 174a ... Flow path 176 ... Passage 180 ... Shower outlet 182 ... Flow passage 183 ... Hole 184, 184a ... Flow passage 191a, 191b, 191c ... O Ring 196a, 196b, 196c, 196d ... O-ring

Claims (7)

[Claims] 1. An internal member having an inlet and an outlet for a fluid, and a passage communicating with the inlet and the outlet, an insertion hole for inserting the internal member, and a communication with the insertion hole,
A faucet including an external member having a storage space for storing the internal member, wherein the internal member has one or more steps on the outer peripheral surface whose outer diameter decreases toward the distal end in the insertion direction. A faucet characterized in that a gap communicating with an inlet and / or an outlet of the inner member is formed between an outer peripheral surface of the inner member and an inner peripheral surface of the outer member housed in a member housing space. . 2. The water faucet according to claim 1, wherein the inner member is provided with a valve device for controlling a fluid flowing in a passage of the inner member. 3. The valve device includes a housing having a predetermined shape that is fitted and inserted into a passage of the internal member, and at least a part of a function of controlling a fluid is housed in the housing. 2. The water faucet according to 2. 4. The communication hole for connecting the valve device and a driving part of the valve device, when the internal member includes a valve device for controlling fluid flowing in a passage of the internal member, or A fluid inlet or outlet in the external member,
Alternatively, the faucet according to any one of claims 1 to 3, which is a fixing portion when the faucet is fixed to another structure. 5. The water faucet according to claim 1, wherein the inner member is made of resin. 6. The water faucet according to claim 1, further comprising a seal member provided between an inner peripheral surface of the outer member and an outer peripheral surface of the inner member, the seal member blocking the gap. . 7. A seal member is provided between an end surface of the inner member or an end surface of a step portion formed on an outer peripheral surface of the inner member and an inner peripheral surface of the outer member, the seal member blocking the gap. The water faucet according to any one of claims 1 to 5, characterized in that: