JPH043166Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a hot and cold water mixing faucet that allows adjustment of the amount of water supplied and temperature adjustment by adjusting the mixing ratio of hot and cold water with a single lever. It is something. More specifically, the present invention relates to a hot water mixing faucet configured to reliably prevent loosening of bolts that secure a valve device within the main body of the hot water mixing faucet.

[Prior Art] A mixing faucet that has the function of adjusting water volume and temperature with a single operation lever adjusts the water volume by rotating the lever along a vertical plane, and by rotating the lever along a horizontal plane. Generally, the temperature is adjusted by adjusting the mixing ratio of hot water and cold water.

The structure of this type of hot water mixing faucet is shown in FIG.
In FIG. 5, the faucet lever 10 has a boss portion 12 at its base end, which is connected to the upper end of a spindle 16 mounted on the upper portion of the housing 14. As shown in FIG. The spindle 16 is attached to a rotating frame 20 via a horizontal pin 18 so as to be able to swing in a vertical plane, and a spherical connecting protrusion 22 is protruded from the lower end of the spindle 16. It is fitted into a receiving hole 26 of a valve body 24 made of ceramic. Then, as the spindle 16 swings as the lever 10 is operated up and down, the valve body 24 is linearly moved (slided) in the front-rear direction on a ceramic valve body 30 (described later), thereby adjusting the water supply amount.

In addition, a horizontal pin 18 that is a support shaft of the spindle 16
The rotating frame 20 to which is attached is held so as to be able to rotate in a horizontal plane on the upper surface of the housing 14. Horizontal rotation of the lever 10 rotates the spindle 16, and the rotational force is applied to the frame 20. The water temperature is adjusted by rotating the valve body 24 left and right to adjust the hot water flow rate and cold water flow rate.

Note that the valve body 24 has a recess 28 formed on its lower surface side, and is capable of sliding on a valve body 30 made of ceramic. The valve body 30 is fixed in the housing 14, and a mixed water outflow opening 32, a cold water reception opening (not shown), and a hot water reception opening (not shown) are fitted in the thickness direction of the valve body 24. By moving forward and backward and rotating left and right, the opening area where these openings and the recess 28 overlap can be changed, thereby making it possible to perform the above-mentioned flow rate adjustment and hot water temperature adjustment.

The housing 14 has a cylindrical shape with a lid and no bottom, and is fixed to the main body 36 with bolts 34. Note that 44 is a washer. Further, a bottom cover 38 is fitted to the bottom of the housing 14, and an opening 4 is provided in the bottom cover 38 at a position corresponding to the opening 32, etc.
0 is set. This opening 40 etc. is the main body 36
It communicates with a mixed water flow path, a cold water flow path, a hot water flow path, etc. inside the faucet through an opening 42 of a support portion provided in the faucet.

As shown in FIG. 5, the bolt 34 passes through the bolt insertion hole 14a of the housing 14 and the bolt insertion hole 38a of the bottom cover 38, and then enters the bolt hole 3 of the main body 36.
The bolt insertion hole 38a of the bottom cover 38 has a diameter larger than that of the bolt 34.

[Problems to be solved by the invention] In the above-mentioned conventional hot and cold water mixing faucet, the bolts 34 loosen when used for a long period of time, causing the housing 14 to become loose.
The fastening force between the valve bodies 24 and 30 between the valve body and the bottom cover 38 was weakened, and in severe cases, there was a risk of water wetting.

[Means for Solving the Problems] The present invention provides a hot water mixing faucet in which a valve device having a housing, a valve body, and a bottom cover is fixed in a faucet main body with bolts, in which a bolt insertion hole in the bottom cover is inserted. The diameter is approximately equal to the root diameter of the bolt, and the bolt is self-tapped and tightened by screwing the bolt.

[Function] In the hot water mixing faucet of the present invention, the bolt insertion hole of the bottom cover is self-tapped and fixed by screwing the bolt, so that loosening thereof is reliably prevented.

[Example] The present invention will be explained below with reference to the drawings.

FIG. 1 is a sectional view showing the configuration of a hot water mixing faucet according to an embodiment of the present invention. In this example,
The structure near the bolt insertion hole 38a of the bottom cover 38 is the fifth one.
The only difference from the conventional example shown in the figure is that the configuration of other parts is the same, so the same parts are given the same reference numerals and the explanation thereof will be omitted.

In the present invention, the bolt insertion hole 38 of the bottom cover 38
The diameter of the hole a is set to be approximately equal to the root diameter of the bolt 34.

Therefore, the bolt 34 is inserted into the bolt insertion hole 14a of the housing 14 and the bolt insertion hole 38 of the bottom cover 38.
a and the bolt hole 36a of the faucet main body 36 as it spirals, each self-tap part has a structure in which it tightly contacts the thread of the bolt 34, and the frictional force becomes large to prevent the bolt 34 from loosening. becomes certain.

In addition, in the present invention, as shown in FIGS. 2 and 3, one or more recesses 44a (holes in FIG. 2) are provided on the bolt contact surface of the washer 44,
By providing a convex portion 34a corresponding to this concave portion on the washer abutting surface of the bolt 34, loosening of the bolt 34 can be more reliably prevented. Note that the concave portion of the washer and the convex portion of the bolt may be in any combination as long as they prevent rotation of the bolt, and their shape and number may be arbitrary. Further, in the present invention, a convex portion may be provided on the bolt abutting surface of the washer, and a concave portion may be provided on the washer abutting surface of the bolt.

Note that by using a power bolt as the bolt 34, loosening of the bolt 34 can be more reliably prevented.

[Effects of the invention] As mentioned above, in the hot water mixing faucet of the present invention, the bolt insertion holes in the bottom cover also have a self-tap structure, so the bolts that secure the valve device to the faucet body can be more securely prevented from loosening. Therefore, even if used for an extremely long period of time, problems such as water wetting will not occur, and the device can be operated satisfactorily.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a hot water mixing faucet according to an embodiment of the present invention, Figs. 2 and 3 are perspective views of the washer, Fig. 4 is a side view of the bolt, and Fig. 5 explains a conventional example. FIG. 10...Lever, 14...Housing, 16...
... Spindle, 24, 30 ... Valve body, 34 ... Bolt, 36 ... Faucet body, 38 ... Bottom cover, 44 ...
...Washer.

Claims (1)

[Claims for Utility Model Registration] (1) A cylindrical housing with a lid and no bottom, a valve body consisting of a pair of disc valves housed within the housing, and the valve mounted with a lid on the bottom of the cylindrical housing. A valve device having a bottom cover for supporting the body is disposed inside the faucet body, and the valve device is connected to the water by a bolt inserted into a bolt insertion hole provided through the housing and the bottom cover. A hot and cold water mixing faucet fixed to a faucet body, characterized in that the bolt insertion hole of the bottom cover is made approximately equal to the root diameter of the bolt, and the bolt is screwed into the faucet to self-tap and tighten. . (2) A request for registration of a utility model characterized in that the bolt is threaded through a washer, and a concave or convex portion is provided on the washer contact surface of the bolt head and the bolt contact surface of the washer. A hot water mixing faucet according to item 1.