JPH083803Y2 - Thermostatic hot water mixing valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a thermostat type hot and cold water mixing valve.

[Conventional technology]

This kind of hot and cold water mixing valve is also called a hot and cold water mixing valve as is well known in Japanese Utility Model Publication No. 61-152871, and as shown in FIG. 5, the thermostat 1 that expands and contracts by detecting the temperature of the mixed water is used. The temperature control valve 2 is moved back and forth to open and close the cold water inlet 3 and the hot water inlet 4, and the mixing ratio of the cold water and the hot water is controlled to bring the temperature of the mixed water to the set temperature. A coil spring 5 that urges the coil spring 5, and a collar 6 that supports one end (the right end in the drawing) of the coil spring 5 and that has a cylindrical portion 6a that is close to the inner circumference of the coil spring 5.
A mixing valve body 7 that supports this collar, a cylindrical portion 8a that supports the other end (left end) of the coil spring 5 and is close to the inner circumference of the coil spring 5, and is supported by the temperature control valve 2. A guide 8 and a hot water passage 9 through which hot water flows by touching the coil spring 5. The hot water flows through the hot water inlet 4 and the hot water passage 9 as shown by an arrow A, and passes through the hot water outlet 10 between the tip (left end) of the collar 6 and the tip (right end) of the guide 8 and the mixing chamber. Leaked to 11,
As shown by the arrow B, the cold water is mixed with the cold water which passes through the cold water inlet 3 and flows into the mixing chamber 11. It has a cylindrical portion 2a surrounding the temperature control valve 2 and the outer circumference of the coil spring 5, and a cold water inlet 3 is provided at the right end of this cylindrical portion and a hot water inlet 4 is provided at the left end. The right end small diameter portion 6b of the collar 6 is loosely fitted into the hole formed in the partition wall 7a of the mixing valve 7, and the collar portion 6c is pressed against the partition wall 7a by the coil spring 5.
The guide 8 has a collar portion 8b at the left end of the tubular portion 8a.
8b is pressed against the stepped portion 2b of the temperature control valve 2 by the coil spring 5. The outer periphery of the collar portion 8b is fitted inside the cylindrical portion 2a of the temperature control valve 2 with a slight gap.

[Problems to be solved by the device]

In the above conventional technique, the cylindrical portion of the collar 6 and the guide 8 is
The outer circumferences of 6a, 8a and the inner circumference of the coil spring 5 may be eccentric, and when the coil spring 5 vibrates due to the hot water flowing through the hot water passage 9 at the time of high hot water pressure, the tubular portion 6a of the collar 6 inside the coil spring 5 is formed. Or the tubular portion 8a of the guide 8,
Alternatively, the cylindrical portion 2a of the temperature control valve 2 outside the coil spring 5
There was a problem in that it generated an abnormal noise called a bee sound.

An object of the present invention is to provide a thermostat type hot and cold water mixing valve which prevents this abnormal noise due to the vibration of the coil spring 5.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention moves a temperature control valve (2) forward and backward by a thermostat (1) that detects and operates a mixed water temperature to connect a cold water inlet (3) and a hot water inlet (4). It is opened and closed to control the mixing ratio of cold water and hot water to bring the temperature of the mixed water to a set temperature. The temperature control valve (2) is installed inside the cylindrical portion (2a) of the temperature control valve (2). A coil spring (5) for urging the coil spring (5), a collar (6) supporting one end of the coil spring (5) and having a tubular portion (6a) close to the inner circumference of the coil spring (5), and a coil A guide (8) having a tubular portion (8a) that supports the other end of the spring (5) and is close to the inner circumference of the coil spring (5), and a hot water passage (where hot water flows by touching the coil spring (5) ( 9) and a coil spring ( Between one end and between the collar (6), or a coil spring (5) guide (8) of), or an elastic member (1 between both of these
2) or (13), or (12) and (13) are provided.

[Action]

Tubular portion (6a) of collar (6) or guide (8),
If the outer diameter of one or both of the bases (8a) is set to be equal to or larger than the inner diameter of the coil spring (5), the coil spring is in a press-fitted state and there is no clearance between the base and the coil spring. That is, this coil spring (5) is made by winding an elastic wire in a spiral shape, and its end is cut, so that even if the base has a large outer diameter, it spreads in the circumferential direction at the time of fitting, so it is easy. Can be fitted.
That is, it can be press-fitted. Therefore, the inner circumference of the coil spring (5) and the tubular portion (6) of the collar (6) and the guide (8).
There is no eccentricity between the outer diameters of a) and (8a) other than the base, and the intervals are uniform, the minimum interval is wider than in the prior art, and the coil spring (5) vibrates. However, it will not hit the collar (6), the guide (8) or the temperature control valve (2).

Also, in the case where the elastic members (12) and (13) are provided, by providing these elastic members on the seating surface of the coil spring, the seating surface of the coil spring moves in the axial direction of the spring. Even if the player dances and vibrates, the seat surface moves and the vibration is reduced. Therefore, the vibration is prevented from being transmitted to the mixing valve body and being emitted as a sound wave in the air.

〔Example〕

FIG. 1 shows a state in which an elastic member is omitted. The thermostat 1 which detects the mixed water temperature and expands and contracts to move the temperature control valve 2 forward and backward to open and close the cold water inlet 3 and the hot water inlet 4 to cool the cold water. The mixed water temperature is controlled to a set temperature by controlling the mixing ratio of the hot water and the hot water, and the coil spring 5 for urging the temperature control valve 2 in one direction and one end (right end in the figure) of the coil spring 5 are supported. A collar 6 having a tubular portion 6a close to the inner circumference of the coil spring 5, a mixing valve body 7 that supports this collar, the other end (left end) of the coil spring 5 and the inner circumference of the coil spring 5 A guide 8 which has a cylindrical portion 8a close to and is supported by the temperature control valve 2 and a hot water passage 9 through which hot water flows by touching the coil spring 5 are provided. The hot water flows through the hot water inlet 4 and the hot water passage 9 as shown by an arrow A, and passes through the hot water outlet 10 between the tip (left end) of the collar 6 and the tip (right end) of the guide 8 and the mixing chamber. It is mixed with the cold water flowing out to 11, passing through the cold water inflow port 3 as shown by arrow B and flowing into the mixing chamber 11. It has a cylindrical portion 2a surrounding the temperature control valve 2 and the outer circumference of the coil spring 5, a cold water inlet 3 is provided at the right end of this cylindrical portion, and a hot water inlet 4 is provided at the left end. The right end small diameter portion 6b of the collar 6 is loosely fitted into the hole formed in the partition wall 7a of the mixing valve 7, and the collar portion 6c is pressed against the partition wall 7a by the coil spring 5. The guide 8 has a flange portion 8b at the left end of the tubular portion 8a, and the flange portion 8b is pressed against the step portion 2b of the temperature control valve 2 by the coil spring 5. The outer periphery of the collar portion 8b is fitted inside the cylindrical portion 2a of the temperature control valve 2 with a slight gap. In this embodiment, the outer diameter of the base of the tubular portion 6a of the collar 6 and the guide 8
The outer diameter of the base of the cylindrical portion 8a of the coil spring is set to be slightly larger than the inner diameter of the coil spring 5 in the free shape.
The right end and the left end of the coil spring 5 are fitted to 6d and 8d. The cylindrical portions 6a and 8a other than the base portions 6d and 8d of the collar 6 and the guide 8 have the same outer diameter dimension as the conventional one, but since there is no eccentricity with the coil spring 5, a clearance (clearance) with the coil spring 5 is provided. Even if the coil spring 5 vibrates, the minimum value of 9 becomes larger than that of the prior art,
The risk of hitting is reduced. A portion D in which the minimum gap is improved is indicated by a symbol D. It is easily understood that the minimum gap between the inner circumference of the cylindrical portion 2a of the temperature control valve 2 and the coil spring 5 is also increased, and the coil spring is less likely to hit when it vibrates.

In the above-described first embodiment, the tubular portion of the collar 6 and the guide 8 is
Although the outer diameters of the base portions of both 6a and 8a are larger than the inner diameter of the coil spring 5, the outer diameter of the base portion of either one of the tubular portions 6a or 8a may be larger than the inner diameter of the coil spring 5.

FIG. 2 shows an embodiment of the present invention. A ring-shaped elastic member 12 such as rubber is provided between one end (right end) of the coil spring 5 and the collar portion 6c of the collar 6, and the other end (left end) of the coil spring 5 is provided.
A ring-shaped elastic member 13 made of rubber or the like is provided between the guide 8 and the flange 8b of the guide 8 to cushion the vibration of the coil spring from being transmitted to the mixing valve body 7 and to absorb the vibration energy to cause vibration. Hold down.

Only one of the elastic members 12 and 13 may be provided.

FIG. 3 is an application of the means shown in FIG. 1 and FIG. 2, in which the outer diameters of the bases of the tubular portions 6a and 8a of the collar 6 and the guide 8 are increased to increase the tubular portions 6a and 8a. The outer diameter has a stepped shape, and further the coil spring 5, the collar 6 and the guide 8
Elastic members 12 and 13 are provided between the two. This embodiment can be expected to have both the effects of reducing the eccentricity of the coil spring and suppressing the vibration.

In addition to the above, a means for increasing the outer diameter of the base of each of the tubular portions 6a, 8a of the collar 6 and the guide 8 and the elastic members 12, 1 are provided.
By combining various means to provide 3,14,15,
The object of the present invention can be achieved.

[Advantages of the Invention] Since the thermostat-type hot and cold water mixing valve of the present invention is configured as described above, the minimum clearance between the coil spring and the collar, the guide or the temperature control valve becomes large, or the deflection of the coil spring is suppressed. Therefore, it is possible to prevent the generation of abnormal noise due to the vibration of the coil spring.

Especially, in this invention, since the elastic member is provided on the seat surface of the coil spring, the seat surface moves in the axial direction of the spring, and even if the spring dances or vibrates, the seat surface moves and the spring vibrates. Vibration changes because the state changes. Further, since the coil spring and the engaging portion are fitted tightly together in a press-fitted state, even if hot water flows through the spring portion and the spring dances, there is no clearance in the engaging portion, so there is no interference and no noise is produced.

[Brief description of drawings]

FIG. 1 is a vertical sectional view in which an elastic member is omitted, and FIGS. 2 and 3 are vertical sectional views showing different embodiments of the present invention.
FIG. 4 is a vertical sectional view of the prior art. 1 ... Thermostat, 2 ... Temperature control valve, 3 ... Cold water inlet, 4 ... Hot water inlet, 5 ... Coil spring, 6 ...
… Color, 6a, 8a …… Cylindrical part, 7 …… Mixing valve body,
8 ... Guide, 9 ... Hot water passage, 12,13, ... Elastic member

Claims (8)

[Scope of utility model registration request] 1. A thermostat (1) which operates by detecting the temperature of mixed water causes a temperature control valve (2) to move forward and backward to open and close the cold water inlet (3) and the hot water inlet (4), thereby providing cold water and hot water. It controls the mixing ratio of to bring the mixed water temperature to the set temperature,
A coil spring (5) arranged inside the cylindrical portion (2a) of the temperature control valve (2) for urging the temperature control valve (2) in one direction;
A cylindrical portion (6a) that supports one end of the coil spring (5) and is close to the inner circumference of the coil spring (5).
And a guide (8) having a cylindrical portion (8a) that supports the other end of the coil spring (5) and is close to the inner circumference of the coil spring (5), Hot water passage (9) that flows by touching 5)
A mixing valve with a coil spring (5)
Thermostatic hot and cold water mixing valve having an elastic member (12) provided between the one end and the collar (6). 2. A cold water inlet and a hot water inlet (4) are opened and closed by advancing and retracting a temperature control valve (2) by a thermostat (1) which detects a mixed water temperature and operates. It controls the mixing ratio of to bring the mixed water temperature to the set temperature,
A coil spring (5) arranged inside the cylindrical portion (2a) of the temperature control valve (2) for urging the temperature control valve (2) in one direction;
A cylindrical portion (6a) that supports one end of the coil spring (5) and is close to the inner circumference of the coil spring (5).
(6) having a collar (6), a guide (8) having a cylindrical portion (8a) that supports the other end of the coil spring (5) and is close to the inner circumference of the coil spring (5), Hot water passage (9) that flows by touching 5)
A mixing valve with a coil spring (5)
Thermostat type hot and cold water mixing valve having an elastic member (13) provided between the other end and the guide (8). 3. A cold water and hot water are opened and closed by advancing and retracting a temperature control valve (2) by a thermostat (1) which detects and operates a mixed water temperature to open and close the cold water inlet (3) and the hot water inlet (4). It controls the mixing ratio of to bring the mixed water temperature to the set temperature,
A coil spring (5) arranged inside the cylindrical portion (2a) of the temperature control valve (2) for urging the temperature control valve (2) in one direction;
A cylindrical portion (6a) that supports one end of the coil spring (5) and is close to the inner circumference of the coil spring (5).
(6) having a collar (6), a guide (8) having a cylindrical portion (8a) that supports the other end of the coil spring (5) and is close to the inner circumference of the coil spring (5), Hot water passage (9) that flows by touching 5)
A mixing valve with a coil spring (5)
An elastic member (12) between the one end of the and the collar (6),
Thermostat type hot and cold water mixing valve provided with an elastic member (13) between the other end of the coil spring (5) and the guide (8). 4. A cold water inlet and a hot water inlet (4) are opened and closed by advancing and retracting a temperature control valve (2) by a thermostat (1) that detects and operates a mixed water temperature. It controls the mixing ratio of to bring the mixed water temperature to the set temperature,
A coil spring (5) arranged inside the cylindrical portion (2a) of the temperature control valve (2) for urging the temperature control valve (2) in one direction;
A cylindrical portion (6a) that supports one end of the coil spring (5) and is close to the inner circumference of the coil spring (5).
Has a collar (6), a mixing valve body (7) that supports this collar, and a cylindrical portion (8a) that supports the other end of the coil spring (5) and is close to the inner circumference of the coil spring. And a guide (8) supported by the temperature control valve (2) and a hot water passage (9) through which the hot water flows by contacting the coil spring (5). A thermostatic hot and cold water mixing valve in which an elastic member (12) is provided between the one end and the collar (6) and an elastic member (15) is provided between the guide (8) and the temperature control valve (2). 5. A thermostat (1) that operates by detecting the temperature of mixed water is used to move the temperature control valve (2) forward and backward to open and close the cold water inlet (3) and the hot water inlet (4). It controls the mixing ratio of to bring the mixed water temperature to the set temperature,
A coil spring (5) arranged inside the cylindrical portion (2a) of the temperature control valve (2) for urging the temperature control valve (2) in one direction;
A cylindrical portion (6a) that supports one end of the coil spring (5) and is close to the inner circumference of the coil spring (5).
Has a collar (6), a mixing valve body (7) that supports this collar, and a cylindrical portion (8a) that supports the other end of the coil spring (5) and is close to the inner circumference of the coil spring. And a guide (8) supported by the temperature control valve (2) and a hot water passage (9) through which the hot water flows by contacting the coil spring (5). An elastic member (13) is provided between the other end and the guide (8), and the collar (6) and the mixing valve body (7).
Thermostatic hot and cold water mixing valve with an elastic member (14) provided between and. 6. The outer diameter of the base of the cylindrical portion (6a) of the collar (6) engaging with one end of the coil spring (5) is set to be equal to or larger than the inner diameter of the coil spring (5). The thermostatic hot and cold water mixing valve according to any one of claims. 7. The base outer diameter of the tubular portion (8a) of the guide (8) engaging with the other end of the coil spring (5) is set to be equal to or larger than the inner diameter of the coil spring (5). A thermostatic hot and cold water mixing valve according to any one of claims. 8. The base outer diameter of the tubular portion of the collar (6) and the base outer diameter of the tubular portion (8a) of the guide (8) which engage with the respective ends of the coil spring (5), The thermostatic hot and cold water mixing valve according to any one of claims 1 to 5, wherein the inner diameter of the spring (5) is equal to or larger than the inner diameter of the spring (5).