JP3220727B2 - Assembling structure of lock button of temperature control handle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling structure of a lock button of a temperature control handle, and more particularly to an assembling structure of a lock button of a temperature control handle which is easy to assemble and has a small number of parts.

[0002]

2. Description of the Related Art Conventionally, in a temperature control handle of a hot-water mixer tap incorporating a thermostat mechanism or the like, a lock button is provided on the temperature control handle so that a high-temperature mixed water is not inadvertently discharged. The rotation of the adjusting handle beyond a predetermined position is restricted, and the lock button is unlocked as necessary, thereby enabling discharge of high-temperature mixed water. Such a lock button has been assembled to the temperature control handle by an assembly structure as shown in FIG.

The temperature control handle 60 is provided in a substantially cylindrical shape having a bottom and an opening at a base end thereof.
A substantially cylindrical collar 5 as shown in FIG. 3 is connected to a mixer tap (not shown) provided with a thermostat function provided on the faucet main body side and discharged as shown in FIG. It plays a role in regulating the temperature of hot and cold water. Also,
A lock button insertion hole 6 is provided on the outer periphery of the temperature control handle 60.
1 is drilled. The above-mentioned collar is provided with a notch 6 of a predetermined length along the circumferential direction at the tip end thereof, so that the notch end is provided with an interference portion 7 for regulating the rotation of the temperature control handle 60. ing. The conventional lock button assembling structure 70 is disposed inside the temperature control handle 60 so that the button portion 71 of the lock button 72 projects from the lock button insertion hole 61 formed in the outer periphery of the temperature control handle 60. The temperature control handle unit 62 is formed together with the temperature control handle 60. The lock button 72 is composed of a button part 71 made of synthetic resin, a pin 73 made of SUS, a stopper 74, a leaf spring 75, and an E-shaped retaining ring 76, which are inserted through the insertion hole 61 of the temperature control handle 60. The button portion 71 is protruded and attached to the inside of the outer wall 64 of the temperature control handle 60.

[0004] The process of assembling the lock button 72 thus configured to the temperature control handle 60 is as follows. First, a pin 73 having a knurled outer periphery at the distal end portion is inserted and fixed in a fixing hole 77 on the base end side of the button portion 71, and the pin 73 is inserted from the outside of the temperature control handle 60 into the insertion hole 61 to warm up. The adjustment handle 60 is made to protrude inside. Next, in the internal space of the temperature control handle 60 described above,
A stopper 74 is fitted into the base end of the spring with its longitudinal direction oriented in the axial direction of the temperature control handle 60.
The two ends of the leaf spring 75 in the longitudinal direction are inserted into the temperature control handle 6 while the longitudinal direction of the leaf spring 75 is inserted in the circumferential direction of the temperature control handle 60.
0 is inserted into a locking piece (not shown) inside. Finally, the E-shaped retaining ring 76 is fitted to the pin 73 and the lock button 72 is
Is assembled, and the process of assembling to the temperature control handle 60 is also completed.

[0005] The temperature control handle unit 62 having the lock button 72 assembled as described above can be operated as follows. When rotating the temperature control handle 60 within a predetermined temperature range, the stopper 74 does not come into contact with the interference portion of the collar, and the rotation is free within the predetermined range. On the other hand, if the temperature control handle 60 is to be rotated beyond the predetermined range, the stopper 74 is interfered by the interference portion of the collar, and restricts the temperature control handle 60 from rotating beyond the predetermined range. Therefore, normally, mixed water having a temperature higher than a predetermined temperature is not discharged. When trying to discharge hot water above a certain temperature,
When the lock button 72 is pushed in, the stopper 74 separates from the inner wall of the temperature control handle 60 against the leaf spring 75, and moves to a position not restricted by the interference portion of the collar. If the temperature control handle 60 is further rotated in this state, it can be rotated beyond a predetermined range, so that hot water with a desired high temperature can be obtained.

[0006]

However, in the above-mentioned conventional structure for assembling the lock button of the temperature control handle, it is necessary to perform the assembling work inside the temperature control handle which is inefficient in workability. , Assembly work was inefficient. In addition, there has been a problem that the number of parts increases and the manufacturing cost increases.

The first aspect of the present invention solves the above-mentioned drawbacks of the prior art, in which the stopper portion can be inserted into the insertion hole from the outside of the temperature control handle, thereby improving working efficiency. An object of the present invention is to provide a structure for assembling a lock button of a temperature control handle, which enables an assembling operation of a lock button to be performed outside a good handle, thereby simplifying the assembling operation. Further, in addition to the above object, the invention according to claim 2 reduces the number of parts by providing the stopper portion integrally with the lock button in the structure for assembling the lock button of the temperature control handle according to claim 1. It is intended to reduce the manufacturing cost.

[0008]

According to the first aspect of the present invention, there is provided a structure for mounting a lock button of a temperature control handle, wherein the lock button is provided between a through hole of the temperature control handle and an outer periphery of the temperature control handle. The lock button of the temperature control handle, which has a button part that is protruded to and is urged in the protruding direction, and a stopper part that is disposed inside the temperature control handle and interferes with the interference part provided on the faucet body side In the assembly structure of
The stopper portion can be inserted into the insertion hole from outside the temperature control handle, and the lock button is bent into the insertion hole.
And push it into contact with the outer wall of the temperature control handle.
It is characterized in that a drop-off preventing portion for preventing drop-off of the button is provided . Thereby, the lock button can be assembled from the outside of the handle.

When the slip-off preventing portion comes into contact with the outer wall, the lock button
To prevent the heat sink from dropping out of the temperature control handle. Ma
In addition, the removal prevention part is bent and pushed into the insertion hole.
Thus, assembly from the insertion hole 4 can be facilitated.

[0010] The structure for assembling the lock button of the temperature control handle employed in the invention according to claim 2 is the same as the structure of assembling the lock button for temperature control handle according to claim 1.
The button portion and the stopper portion are integrally formed. Thereby, the number of parts can be reduced, and the manufacturing cost can be reduced.

[0011]

Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the assembling structure 1 of the temperature control handle 2 and the lock button of the temperature control handle of the present invention,
The temperature control handle unit 3 is configured.

The temperature control handle 2 is provided in a substantially cylindrical shape having a bottom and an opening at a base end thereof, and has a space 10 between an inner central shaft 8 and an outer wall 9, and as shown in FIG. Is connected to a mixing tap (not shown) having a thermostat function provided with the collar 5 and has a role of adjusting the temperature of the discharged hot water. Further, an insertion hole 4 for a lock button is formed in the outer periphery of the temperature control handle 2. The above-mentioned collar 5 is provided with a notch 6 of a predetermined length along the circumferential direction at the tip thereof, so that an interference part 7 for regulating the rotation of the temperature control handle 2 is provided at the notch end. Have. The lock button assembling structure 1 is disposed inside the temperature control handle 2 so that the button portion 21 of the lock button 20 projects from the lock button insertion hole 4 formed in the outer periphery of the temperature control handle 2. The temperature control handle unit 3 is configured together with the control handle 2.

The lock button 20 is integrally formed of a synthetic resin such as polyacetal resin and has a button portion 21, a stopper portion 22, and a stopper portion 23. The lock button 20 is connected to the base end side of the button portion 21. A coil spring 24 as an urging means is fitted in a circumferential groove 25 provided in the shaft portion 26 to form the lock button assembly structure 1.

The button portion 21 is provided in an oval cross section.
The lock button 20 is provided with a cross-sectional shape that is substantially slidably fitted into the insertion hole 4 so that the push-in operation can be performed smoothly without rattling. As will be described later, the distal end side is protruded from the insertion hole 4 and is attached to the outside of the temperature control handle 2. A shaft portion 26 having a diameter smaller than the outer diameter of the button portion 21 is continuously provided on the base end side of the button portion 21, and the circumferential groove 25 of the shaft portion 26 opened on the opposite side to the button portion 21 as described above. A coil spring 24 is fitted so as to protrude from the circumferential groove 25, while a tip end of the coil spring 24 is pressed against the central shaft 8 of the temperature control handle 2 to push the lock button 20 to the temperature control handle 2. It is biased outward. In the present embodiment, the coil spring 24 is used as the urging means. However, the present invention is not limited to this, and any other spiral spring, leaf spring, or other elastic material may be used as long as it can be inserted through the insertion hole 4. It may be a body such as rubber.

Further, on the outer periphery of the shaft portion 26 near the opening side, there is provided a thin plate-shaped stopper portion 22 which protrudes from the axis of the shaft portion 26 toward the outer edge of the button portion 21. The tip of the slip-off preventing portion 22 is attached to the outer wall 9 of the temperature control handle 2.
Is provided so as to extend to a position slightly outside the insertion hole 4 provided in the temperature control handle 2. It prevents falling off to the outside. On the other hand, the slip-off preventing portion 22 formed integrally with the button portion 21 and the like by a synthetic resin is provided in a thin plate shape and further provided at a joint portion with the shaft portion 26 with a further reduced thickness.
Thus, the distal end side is provided so as to be slightly flexible in the axial direction of the shaft portion 26. Further, the shaft portion 26 is provided with a gently tapered stopper portion 23 protruding perpendicularly to the axial direction of the shaft portion 26 further closer to the opening side of one of the slip-off preventing portions 22. The collar 5 is provided on the faucet body such that when the temperature control handle 2 is rotated while being biased by the coil spring 24, the interference portion 7 is located at a position where the stopper portion 23 interferes. . The stopper portion 23 is formed to be thin in the front-rear direction and thick in the horizontal direction when viewed from the front side of the button portion 21 so that the lock button 20 can be easily bent in the front-rear direction when the lock button 20 described later is assembled. In addition to being easy to attach, when the interference portion 7 of the collar 5 interferes with the stopper portion 23 in the lateral direction, the rotation of the temperature control handle 2 can be reliably restricted without bending easily.

The process of assembling the thus constructed lock button 20 to the temperature control handle 2 is as follows, as shown in FIG. The coil spring 24 is fitted into the circumferential groove 25 of the shaft 26. Next, the lock button 20 and the coil spring 24 are assembled from the insertion hole 4 to the inside of the temperature control handle 2 while maintaining this state. First, the stopper 23
Into the temperature control handle 2 from its tip. Then, the shaft portion 26 and the detachment prevention portion 22 are inserted. At this time, since the disengagement prevention portion 22 is provided to extend to a position slightly outside the insertion hole 4 as described above, it is pushed into the shaft portion 26 so as to be bent. The shaft portion 26 provided with the drop-out preventing portion 22 is provided with a smaller diameter than the button portion 21 and is therefore provided with a smaller diameter than the insertion hole 4, and the drop-out preventing portion 22 is also provided in a thin plate shape. Then, the coming-off prevention portion 22 protruding from this can be bent in the direction of the shaft portion 26 to be displaced within the inner diameter of the insertion hole 4. At this time, the tip of the coil spring 24 is pressed against the central shaft 8 of the temperature control handle 2 to urge the lock button 20 outwardly of the temperature control handle 2. When the detachment preventing portion 22 passes through the insertion hole 4, the distal end expands inside the temperature control handle 2 and is pressed against the outer wall 9 because the distal end is urged by the coil spring 24. The lock button 20 is prevented from falling out of the temperature control handle 2. It should be noted that a slip-off preventing portion 22 is provided inside the temperature control handle 2.
By providing a means for preventing the opening of the lock button more than necessary, for example, by providing a locking piece or the like, the opening can be reliably prevented, the lock button 20 can be reliably prevented from falling off, and the temperature of the lock button 20 can be stably controlled. It can be held on the handle 2.

The temperature control handle unit 3 having the lock button 20 assembled as described above can be operated as follows. When rotating the temperature control handle 2 within a predetermined temperature range, the stopper portion 23
Without contact with the interference part 7 of the above, the rotation thereof is free within a predetermined range. On the other hand, if the temperature control handle 2 is to be rotated beyond a predetermined range, the stopper portion 23 is interfered by the interference portion 7 of the collar 5 to restrict the temperature control handle 2 from rotating beyond the predetermined range. Therefore,
Usually, mixed water having a temperature higher than a predetermined temperature is not discharged. When trying to discharge hot water at a predetermined temperature or higher, when the lock button 20 is pushed in, the stopper portion 23 separates from the inside of the outer wall of the temperature control handle 2 against the coil spring 24, and is caused by the interference portion 7 of the collar 5. Move to an unregulated location. If the temperature control handle 2 is further rotated in this state, it can be rotated beyond a predetermined range, and a desired high-temperature hot and cold water can be obtained.

Since the present embodiment is configured as described above, there is no need to perform the step of assembling the lock button inside the temperature control handle 60 unlike the conventional temperature control handle 60. Further, since the respective parts of the lock button 20 are integrally formed, the assembly process can be simplified, and the manufacturing cost can be reduced by reducing the number of parts.

The present invention is not limited to the above embodiment. FIG. 4 shows another lock button assembly structure 30 in which an elastic portion 32 is integrally formed with the lock button 31 as means for urging the lock button 31. Other configurations are the same as those of the above-described embodiment. A curved elastic portion 32 protrudes from the distal end side of the shaft portion 33 of the lock button 31. The elastic portion 32 is provided on the central axis 8 of the temperature control handle 2.
The lock button 31 is urged toward the outside of the temperature control handle 2 by being press-fitted. In this embodiment, since the elastic portion 32 as the urging means is formed integrally with the lock button 31, the coil spring 24 is fitted to the lock button 20 and held there, as in the above embodiment. Since it is not necessary to perform the work of pushing the lock button 31 into the temperature control handle 2 in a state in which the lock button 31 is pressed, the assembly of the lock button 31 can be simplified. Further, the number of parts can be further reduced and the manufacturing cost can be reduced.

The present invention is not limited to the above-described embodiment. For example, a clip provided at a portion located outside the temperature control handle 2 at the time of assembling may be used instead of the detachment preventing portion 22. Further, the stopper portion 23 is not limited to be provided in the above-described shape and position.
The position and the position may be such that they can interfere with the interference unit 7 of the above.

[0021]

According to the first aspect of the present invention, as described above, the assembling work can be performed outside the handle with high working efficiency. Claim 2
According to the invention described in (1), in addition to the above effects, the number of parts can be reduced, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a temperature control handle unit for explaining an assembling structure of a lock button of a temperature control handle according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a temperature control handle unit showing a process of assembling a lock button according to the embodiment of FIG. 1;

FIG. 3 is a transparent perspective view of a temperature control handle unit for explaining functions of a collar interference portion and a lock button stopper portion.

FIG. 4 is a vertical cross-sectional view of a temperature control handle unit for explaining an assembling structure of a lock button of a temperature control handle according to another embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a conventional temperature control handle unit for explaining a structure for assembling a lock button of the conventional temperature control handle.

[Explanation of symbols]

1; lock button assembly structure; 2; temperature control handle; 3;
Temperature control handle unit, 4; insertion hole, 5; collar, 6;
Notch, 7; interference part, 8; central axis, 9; outer wall, 10;
Space, 20; lock button, 21; button portion, 22; slip-off preventing portion, 23; stopper portion, 24; coil spring, 25; circumferential groove, 26; shaft portion, 30; Lock button, 32; elastic part, 60;
Temperature control handle, 61; insertion hole, 62; temperature control handle unit, 63; central axis, 64; outer wall, 65; space, 70;
Lock button assembling structure, 71; button portion, 72; lock button, 73; pin, 74; stopper, 75; leaf spring, 76; E-shaped retaining ring, 77;

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 35/00-35/16 F16K 31/44-31/62

Claims (2)

(57) [Claims] A button protruding from the insertion hole of the temperature control handle to the outer periphery of the temperature control handle and being urged in the protruding direction; and a button disposed inside the temperature control handle and provided on the faucet body side. In the assembling structure of the lock button of the temperature control handle provided with a stopper portion that interferes with the interference portion, the stopper portion can be inserted into the insertion hole from outside the temperature control handle, and the lock button is bent into the insertion hole. Do not push
In rare cases, remove the lock button by touching the outer wall of the temperature control handle.
A structure for assembling a lock button of a temperature control handle, which is provided with a slip- off preventing portion for preventing dropping . 2. The structure for assembling a lock button of a temperature control handle according to claim 1, wherein said button portion and said stopper portion are integrally formed.