JPS5834278A - Thermostat mixing valve - Google Patents

Abstract

PURPOSE:To facilitate positioning of a handle for rotation by mounting a projection on the inner peripheral surface of a temperature control handle to bring a ring into spline engagement with a main body and fitting the handle to the main body in such a manner that the handle is rotated, but not moved axially. CONSTITUTION:A projection 34 is mounted on the inner peripheral surface of a temperature control handle 16, and a ring 29 provided with a stopper portion 31 corresponding to the projection 34 is brought into spline engagement with a main body A. The handle 16 is fitted to the main body A in such a manner that the handle is rotated, but not moved axially. Thus, the rotation regulating position of the handle 16 can be easily adjusted to any position by contact of the projection 34 with the stopper portion 31.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermostatic mixing pulp that mixes separately supplied hot water and cold water to a desired temperature and automatically maintains this mixed water temperature.

Hitherto, various types of thermostatic mixing pulps of this kind have been known, examples of which include those shown in Figures 1 and 2 of Japanese Patent Publication No. 49-33371.

To explain this, the spindle α→ moves upward by rotating the needle (g), but since the stopper 0 is also suppressed outward by the coil spring, the upper end of the spindle α◆ @■ As shown in Fig. 2, it comes into contact with the stopper 09, which prevents the upward movement of the spindle CI4, restricts the rotation of the handle (2), and prevents the discharge of high-temperature water to reach the maximum level. Controls the water temperature.

To discharge high-temperature water, push the stopper against the coil spring (6) and insert the first
As shown in the figure, the handle (2) is positioned above the upper end (2) of the spindle α◆ to enable upward movement of the spindle 04 to further rotate the handle (2).

Therefore, in this case, the rotation restriction position of the handle aQ could not be adjusted without changing the length of the upper end 6 of the spindle (14), and the adjustment work was difficult.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to enable the rotation restriction position of the handle to be easily adjusted to an arbitrary position.

The basic structure of the present invention is that a protrusion is provided on the inner peripheral surface of the temperature adjustment handle, and a ring having a stopper part corresponding to the protrusion is spline-engaged with the main body, and the handle is connected to the main body. By mounting the handle so that it rotates but does not move in the axial direction, rotation of the handle is restricted by contact between the protrusion and a portion of the stopper.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Showing the thermostatic mixing pulp of the present invention,
In the figure, the main body (4) is formed into a cylindrical shape with an opening (1) on one side, and has a hot water inlet, a cold water inlet, and a mixed water outlet (all not shown) on the side.

Q: 1) is a control valve part consisting of a hot water valve (2), a water valve (3), etc., and an operation part (
4) and a wax thermostat, which expands and contracts in response to the temperature of the mixed water and is operated by a temperature sensing part (5) that automatically adjusts to the desired temperature, and controls the inflow of hot water and cold water. be. (6) is an inner cylinder that holds the operating part (4), the temperature sensing part (control valve part ω to 5), etc. in such a way that it cannot fall off; in this embodiment, the operating part (4), the temperature sensing part (5), It forms a functional cartridge (0) that is equipped with all the functional parts (&) of a thermostatic mixing valve such as the valve part (b), and this cartridge body (B) is inserted into the main body from the opening (1). The flow paths (7) for hot water, cold water, and mixed water flow inside the main body (4).
8) In addition to forming sections in (9), hot water valve (2) and water valve (3)
) are connected to the hot water flow path (7) and the cold water flow path (8), respectively, and the inflowing hot water and cold water are mixed in the inner cylinder (6) to a preset temperature to form the mixed water flow path. (9), and the cough flow path (9) and the mixed water outlet.

The inner cylinder (6) has a cylindrical main body (6a) with a valve El (11 (L) for hot water and a water valve on one side and an opening (6) on the other side).
Similarly, the lid body part (6b) is formed in a cylindrical shape with an opening at one end, and the opening (2) part is screwed into the opening (6) of the main body part (6a). The spindle α◆ of the operation part (4) held in the inner cylinder (6) of the lid part (6b
) It extends outward through an insertion hole (g) drilled at the outer end of the ID, and a temperature adjustment handle (b) is attached to its tip.

In addition, the spindle α◆ has 7 lunge blocks in the middle, and the 7
The flange (b) is locked in the insertion hole (b) and rotates, but the retaining ring (to) prevents it from moving forward or backward.
) K is installed.

(2) is a push-sea, one end of which has a retaining hole (1) that engages with the spindle α◆ in a square cross-section on the inner circumferential surface.
At the same time, the outer peripheral surface of the lid body (6b) of the inner cylinder (6) is opened.
) is carved on the inner peripheral surface of the guide screw (2), and when the spindle (B) is rotated, the spindle α◆ does not move in the axial direction, but the bush (B) rotates. while moving in the axial direction.

The other end of the bushing is connected to the temperature sensing section (5).

The bolt is a screw, and is a temperature adjustment nozzle formed in the shape of a cylinder with a bottom.
・The spindle mounting bush (to) is fixed to the spindle αΦ.

Temperature adjustment 7. Handle a → and No. Handle mounting bushes@
may be formed integrally. (Foundation) is a fitting for fixing the inner cylinder (6) to the main body (4), and is formed into an annular cylinder shape with both left and right ends open, and has a screw in the left center of its outer circumferential surface. However, a male spline part (2) is cut in the right half. This mounting bracket is fitted onto the outer periphery of the lid (6b) of the inner cylinder (6) so that the tip of the lid (6b) protrudes beyond the metal part (c), and the screw (2) is inserted. Screwed into the opening (1) of the main body (4) and attached to the end surface on the inner side of the main body] 7 langes (B) provided on the outer circumferential surface of the lid body (6b) are connected to the annular protrusion on the inner circumferential surface of the main body (4). (to) to secure the inner cylinder (6) to the main body (4).

In other embodiments, this mounting bracket (c) is used as the inner cylinder (
6), but is integrated with the inner cylinder (6), that is, the lid body (
6b) It is also possible to increase the diameter of the outer circumferential surface of the middle part and provide a threaded part and a male spline part in the core part. Alternatively, the male spline portion may be directly carved into the main body (4).

(C) is equipped with an indicator (G) that adjusts the temperature display such as numbers and scales provided on the temperature adjustment handle (B), and a part of the stopper (B) that restricts the rotation of the handle (G). With a ring, the inner diameter is connected to the mounting bracket through the stepped part (A).
An annular cylindrical body stepped into a large diameter part (ZSa) approximately equal to the outer diameter of the inner cylinder (6) and a small diameter part (29b) approximately equal to the outer diameter of the lid body part (6b) of the inner cylinder (6), The large diameter portion (29a) is provided with the above-mentioned mounting bracket at an appropriate interval from the step portion (2) on its inner surface.
The female spline part (to) that engages with the male spline part (to)
is engraved, and an index (1) of the required shape is attached to a predetermined location on the outer surface, and the small diameter part (29b) has a mark (1) at its tip.
A pusher for attaching the handle is non-rotatably engaged with the inner circumferential surface of the handle αQ, and a stopper part ◇ wheel is provided that protrudes from the inner end of the OI and engages with the nine protrusions (b). The index (to) is the main body (
4) may be provided directly.

Such a thermostatic mixing valve has spindle a
Rotate ◆ to move the button forward or backward, and adjust the openings of the hot water valve (2) and water valve (3) via the temperature sensing part (5) to obtain mixed water at a predetermined temperature. do.

After that, adjust the temperature setting scale (not shown) provided on the handle (1) and the index of the ring (to) to the predetermined temperature, screw the screw (2) onto the spindle Q4, and set the handle (1) to the desired temperature. Attach the handle mounting bush (2) to the spindle A4.
Fixed to.

Therefore, if you rotate the knob αQ, the opening degrees of the hot water valve (2) and water valve (3) will change, so if you match the desired temperature scale of the knob (b) with the indicator, , you can get mixed water at any temperature.

Further, since the protrusion (B) of the handle attachment bush 01 engages with a portion of the stopper of the ring 4 at a predetermined rotational position, the maximum water discharge temperature can be regulated as appropriate.

The reason why the ring 4 and the mounting bracket (to) are engaged by a spline is to enable the position of the stopper part 0 to be easily changed with respect to the main body (4).

Also, the stepped part (to) on the inner surface of the ring and the female spline part (to).
A d spring material (to) is loaded between.

The spring material (2) is made by winding the middle part of a metal wire such as stainless steel or a narrow metal plate into an annular shape, and the remaining parts on both sides form legs (35 &), and the annular winding part (35b) is wound inward. The legs (35a) are bent so that
During step 6b), apply pressure and attach.

At this time, the leg (35a) has corner portions (35c) at the edges equidistant to the left and right of the annular winding portion (35b) to facilitate bending.

Further, the diameter of the annular winding part (35b) is made large enough so that a part of it can protrude further inward from the inner peripheral edge of the small diameter part (zsb) of the ring 4, and the spring material (to) does not shift during assembly. Similarly, the entire length of the spring material should be at least half the length of the inner circumference of the large diameter part (29 m) of the ring@O.

Then, the male spline part) and the female spline part (to the ring) are engaged, the large diameter part (29m) is fitted to the mounting bracket, and the small diameter part (29b) is connected to the spring material (to the ring). ) is fitted into the lid part (6b) of the inner cylinder (6) against the elastic force of the annular winding part (asb).

Therefore, when assembling, it is sufficient to simply insert the inner cylinder (6) into the ring 4 fitted with the spring material (to).
) is tensioned by the elastic force of the annular winding part (35b) of the spring material (to), and the ring 4 cannot be easily pulled out.

Next, the operating state of such a thermostatic mixing valve will be explained. First, turn the temperature adjustment knob to set the desired temperature. Next, an on-off valve (not shown) that opens and closes the supply of mixed water to discharge equipment such as bath spouts and showers.
When opened, mixed water at the desired temperature is dispensed through the dispensing device. At this time, when there is a change in the hot water supply or water supply pressure and the temperature of the mixed water becomes higher or lower than the set temperature, the temperature sensing part (5) such as a wax thermostat works and the control valve part [
]) to maintain the set temperature. That is, when the temperature of the mixed water increases, the temperature sensing part (5) expands and the hot water valve (
2) acts in the valve closing direction, and the water valve (3) acts in the valve opening direction,
The inflow amount of hot water is regulated and the inflow amount of cold water is increased to lower the mixed water temperature. When the temperature of the mixed water drops, the operation is completely opposite to the above, and the temperature of the mixed water is automatically controlled to the set temperature. If a failure occurs in the functional part (IL), etc., first remove the screw (2) that fixes the handle (2) to the spindle α 4, loosen and remove the mounting bracket (C), and pull out the inner cylinder (6) from the main body (4).
The functional part (JL) is held in the inner cylinder (6) when the main body ■
It can be removed at any time.

Since the present invention has the above configuration, it has the following advantages.

■ A ring with a part of the stopper that comes into contact with the protrusion of the handle and restricts the rotation of the handle is splined to the main body, so the part of the stopper can be freely positioned in the direction of rotation relative to the main body. the ring is attached to the main body,
Moreover, since the handle is mounted so that it can rotate relative to the main body but not move in the axial direction, the handle may move backward depending on the position of the ring stopper. If the protrusion no longer touches part of the stopper, the handle will move forward and the bottom will not come into contact with part of the stopper and become unrotatable. Regardless of the rotation restriction position of the handle, the abutting portions of the two abut each other at a fixed nine positions, and the rotation restriction position of the handle, that is, the maximum water discharge temperature can be arbitrarily changed.

■ The rotation of the handle is regulated by the protrusion of the handle and part of the stopper of the ring.The regulated position is always stable, and the structure is simple and can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a longitudinal section showing an example of a conventional thermostatic mixing pulp, FIG. 2 is a sectional view showing an operating state, FIG. 3 is a longitudinal section of a thermostatic mixing pulp showing an embodiment of the present invention, and FIG. 5 is an enlarged vertical sectional view of the main part, FIG. 5 is a sectional view taken along line M-(to) in FIG. 4, and FIG.
b) Linear sectional view; FIG. 7 is an enlarged vertical sectional view of the main parts showing an exploded state. ■−・Body 伽）・・・Control valve (4)−・
Operation part (5)...Temperature sensing part (7)...Hot water flow path (8)...Cold water flow path (9)...Mixed water flow path Q4...Spindle (A)...Insertion Hole aQ...Temperature adjustment handle (2)
・・Bushing holder (in the locking hole) ・・Guide screw portion 4・・Male spline portion ・・Ring OI・・・in the stopper part) ・・・・Female spline portion (B) ・・・・Protrusion patent applicant Toto Kiki Co., Ltd. Agent Kiyoshi Hayakawa 1°' Figure 1 Figure 7-4-63-

Claims (1)

[Claims] A main body having a hot water flow path, a cold water flow path, and a mixed water flow path communicating with both of these flow paths, an operating section for setting the temperature of the mixed water, and a main body that is moved in the axial direction by the operating section and is sensitive to the temperature of the mixed water. In the thermostatic mixing pulp, the operating section is equipped with a guide screw provided on the inner circumferential surface of the main body. It moves forward and backward in the υ-axis direction by screwing into the body and rotating, and a retaining hole is drilled at one end, and a push-sea connected to the temperature-sensing section at the other end, and an insertion hole drilled in the main body. a spindle that rotates but does not move in the axial direction, and has one end protruding outward from the insertion hole and the other end engaging the retaining hole of the bushing; a bottomed cylindrical temperature adjustment nozzle attached to the end and having a protrusion on the inner peripheral surface;
A male spline part is provided on the main body to surround the spindle, and a female spline part is carved on the inner peripheral surface of one end to engage with the male spline part, and the other end corresponds to the protrusion of the temperature adjustment handle. 1. A thermostatic mixing pulp comprising a ring having a part of a stopper, and the protrusion comes into contact with a part of the stopper to regulate the temperature and the rotation range of the handle.