SIEGES DE SOUPAPE ET SOUPAPE DE COMMANDE DE ROBINET EN CERAMIQUE

VALVE SEATS AND CERAMIC CONTROL VALVE OF FAUCET

Abrégé anglais

A faucet comprises two valve seats back-to-back, and a ceramic
control valve assembled with an assembly slot of the two valve seats.
The assembly slot is provided on a central horizontal line thereof with
a cold water guide hole arid a hot water guide hole, and on a central
vertical line thereof with an upper discharging hole and a lower
discharging hole. A base of the ceramic control valve is provided on a
central horizontal line thereof with a cold water admission hole, and a
hot water admission hole. The base is further provided with a water
discharging hole which is located across a central vertical line of the
base such that the water discharging hole is opposite in location to the
lower discharging hole of the assembly slot. The base is provided with
a water stopping surface located on the central vertical line of the
base.

Revendications

CLAIMS
I CLAIM:
1. A faucet comprising:
a front valve seat and a rear valve seat mounted with said front
valve seat in a back-to-back manner to form an assembly slot which is
provided with a cold water guide hole, a hot water guide hole, an
upper discharging hole, and a lower discharging hole, with said upper
discharging hole and said lower discharging hole being connected
with a longitudinal pipe; and
a ceramic control valve assembled with said assembly slot and
formed of a housing, a rotating member, a water control block, a water
distribution seat, and a base, said water control block being provided
with a first water slot and a second water slot, said water distribution
seat being provided with a cold water admission hole, a hot water
admission hole, and a water discharging hole, said base being
airtightly disposed at a bottom of said housing and provided with a
cold water admission hole corresponding in location to said cold
water admission hole of said water distribution seat, a hot water
admission hole corresponding in location to said hot water admission
hole of said water distribution seat, and a water discharging hole
corresponding in location to said water discharging hole of said water
distribution seat, said rotating member serving to actuate said water
control block to regulate flow of cold water and hot water, said base
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being further provided with a water stopping surface;
wherein said cold water guide hole and said hot water guide
hole of said assembly slot of said front valve seat and said rear valve
seat are located on a central horizontal line of said assembly slot, said
upper discharging hole and said lower discharging hole of said
assembly slot being located on a central vertical line of said assembly
slot;
wherein said cold water admission hole and said hot water
admission hole of said base of said ceramic control valve are located
on a central horizontal line of said base, with said water discharging
hole of said base being located across a central vertical line of said
base such that said water discharging hole is opposite in location to
said lower discharging hole of said assembly slot, said water stopping
surface of said base being located on the central vertical line of said
base such that said water stopping surface is opposite in location to
said water discharging hole of said base.
2. The faucet as defined in claim 1, wherein said assembly slot is
provided with a plurality of locating slots; wherein said base of said
ceramic control valve is provided in an underside with a plurality of
locating projections corresponding in location and number to said
locating slots of said assembly slot whereby said ceramic control
valve is assembled with said assembly slot such that said locating
projections of said base of said ceramic control valve are retained in
said locating slots of said assembly slot.
9

Description

CA 02405672 2002-09-30
VALVE SEATS AND CERAMIC CONTROL VALVE OF FAUCET
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a faucet, and more
particularly to two valve seats and a ceramic control valve of the
faucet. The two valve seats are mounted in a back-to-back manner in
conjunction with the ceramic control valve, thereby enabling the cold
water to let out first whenever the faucet is opened.
2. Description of Related Art
As shown in FIG. 12, a prior art faucet comprises two valve seats
30 and 301, which are mounted in a back-to-back manner that the two
valve seats 30 and 301 are in communication with a cold water pipe
31 and a hot water pipe 32, and that the two valve seats 30 and 301
are corresponding in location to the water duct of the ceramic control
valve 33. The valve seats 30 and 301 have a water-discharging hole
34, which is located along with a cold water guide hole 35 and a hot
water guide hole 36 in a triangular manner, as shown in FIG. 13.
These three holes 34, 35 and 36 are so arranged that they conform to
the arrangement pattern of the water-discharging hole 37, the cold
water guide hole 38, and the hot water guide hole 39 of the ceramic
control valve 33.
In operation, when the valve knob 40 of the 33 ceramic
control valve 33 is turned, the cold water duct is first opened so as to
prevent a user from being burned by the hot water under the
circumstances that the ceramic control valve 33 is assembled with the
valve seat 30 located in an outer wall 41. However, when the ceramic
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control valve 33 is assembled with the valve seat 301 located in an
inner wall 42, the hot water is first let out.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a
faucet with valve seats and ceramic control valve, which are free of
the deficiencies of the prior art faucet described above.
The two valve seats of the present invention are provided in an
assembly slot with a cold water guide hole and a hot water guide hole,
which are located correspondingly on a central horizontal line of the
assembly slot. The ceramic control valve is provided with a cold
water inlet, and a hot water inlet, which are located correspondingly
on a central horizontal line of a base of the ceramic control valve. The
base of the ceramic control valve is provided with a water outlet
cooperative with a lower hole of the assembly slot of the valve seat.
As the ceramic control valve is assembled with the valve seat located
in a real wall, the cold water is always let out first.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows an exploded view of the present invention.
FIG. 2 shows an exploded view of the ceramic control valve of
the present invention.
FIG. 3 shows a front view of the valve seat of the present
invention.
FIG. 4 shows a plan view and a sectional view of the base of the
ceramic control valve of the present invention.
FIG. 5 shows a schematic view of a valve seat of the present
invention being mounted in a front wall such that the ceramic control
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valve is assembled with the valve seat, with the top drawing showing
the cross section of the valve seat and the wall, with the middle
drawing showing the front view of the base and the valve seat, and
with the bottom drawing showing the relationship between the water
control block and the water distribution seat.
FIG. 6 shows a schematic view of the closed flow path of the
present invention.
FIG. 7 shows a schematic view of the cold water supply of the
present invention.
FIG. 8 shows a schematic view of the simultaneous supply of
cold water and hot water of the present invention.
FIG. 9 shows a schematic view of the hot water supply of the
present invention.
FIG. 10 shows a schematic view of the assembly of the ceramic
control valve of the present invention with the valve seat located in
the rear wall, with the top and the bottom drawings being opposite to
those of FIG. 5, and with the middle drawing being the same as the
middle drawing of FIG. 5.
FIG. 11 shows a schematic view of the cold water supply at the
time when the ceramic control valve of the present invention is in
action.
FIG. 12 shows a schematic view of a prior art faucet.
FIG. 13 shows another schematic view of the prior art faucet.
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1-5, a faucet embodied in the present
invention comprises a front valve seat 10, a rear valve seat 101, and a
ceramic control valve 20.
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The valve seats 10 and 101 are mounted back to back in a wall
such that an assembly slot 11 of the valve seats 10 and 101 is jutted
out of a front side Ol and a rear side 02 of the wall. The assembly slot
11 is provided with a cold water guide hole 12, a hot water guide hole
I3, an upper discharging hole 14 and a lower discharging hole 15.
The holes 14 and 15 are connected with a longitudinal pipe 16 which
is in turn connected at the top thereof with a shower head, and at the
bottom thereof with a faucet.
As shown in FIG. 2, the ceramic control valve 20 is formed of a
housing 21, a rotating member 22, a water control block 23, a water
distribution seat 24, and a base 25. The water control block 23 is
provided with a first water slot 231 and a second water slot 232. The
water distribution seat 24 is provided with a cold water admission
hole 241, a hot water admission hole 242, and a water discharging
hole 243. The base 25 is disposed airtightly in the bottom of the
housing 21 and is provided with a cold water admission hole 251
corresponding in location to the cold water admission hole 241 of the
water distribution seat 24, a hot water admission hole 252
corresponding in location to the hot water admission hole 242 of the
water distribution seat 24, and a water discharging hole 253
corresponding in location to the water discharging hole 243 of the
water distribution seat 24. The water control block 23 is actuated by
the rotating member 22 to regulate the flow of the cold water and the
flow of the hot water.
As shown in FIG. 3, the cold water guide hole 12 and the hot
water guide hole 13 of the assembly slot 11 of the valve seats 10 and
1 O l are located correspondingly on a central horizontal line "A" of the
assembly slot 11. The upper discharging hole 14 and the lower
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discharging hole 15 of the assembly slot 11 are located
correspondingly on a central vertical line 'B" of the assembly slot 11.
The holes 14 and 15 are in communication with the longitudinal pipe
1 b of the valve seats 10 and 10 l, as shown in FIG. 1.
As shown in FIGS. 1 and 4, the cold water admission hole 251
and the hot water admission hole 252 of the base 25 are located
correspondingly on a central horizontal line "C" of the base 25. The
water discharging hole 253 of the base 25 is located across a central
vertical line "D" of the base 25 such that the hole 253 is opposite to
the lower discharging hole 15. A water stopping surface 254 of the
base 25 is located on the central vertical line "D" of the base 25 such
that the surface 254 is opposite to the water discharging hole 253 of
the base 25.
As shown in FIGS. 3 and 4, the base 25 of the ceramic control
valve 20 is provided in the underside with a plurality of projections
255. The assembly slot 11 of the valve seats 10 and 101 is provided
with a plurality of locating slots 17 corresponding in location and
number to the projections 255. The ceramic control valve 20 is
located by the projections 225 which are retained in the locating slots
17.
As shown in FIGS. 1 and 5, when the ceramic control valve 20 is
assembly with the front valve seat 10 located in the front side O1 of a
wall, the cold water admission hole 251 and the hot water admission
hole 252 of the base 25 of the ceramic control valve 20 are
respectively joined with the cold water guide hole 12 and the hot
water guide hole 13 of the assembly slot 11 of the front valve seat 10.
The water discharging hole 253 of the base 25 is joined with the
lower discharging hole 15 of the assembly slot 11 of the front valve

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seat 10. The water stopping surface 254 of the base 25 is airtightly
joined with the upper discharging hole 14 of the assembly slot 11 of
the front valve seat 10.
As shown in FIGS. 6, 7, 8, and 9, when the water control block
23 of the ceramic control valve 20 is turned, the first water slot 231
and the second water slot 232 of the water control block 23 are caused
to displace in relation to the cold water admission hole 241, the hot
water admission hole 242, and the water discharging hole 243 of the
water distribution seat 24, thereby resulting in the first-out of the cold
water, as shown in FIG. 7, and then the simultaneous outflows of the
cold water and the hot water, as shown in FIG. 8. The simultaneous
outflows are followed by an exclusive outflow of the hot water, as
shown in FIG. 9.
As shown in FIG. 10, the ceramic control valve 20 is to be
assembled with the rear valve seat 101 located in the rear side 02 of
the wall, the ceramic control valve 20 is turned an angle of 180
degrees before the ceramic control valve 20 is assembled with the rear
valve seat 101. As a result, the cold water admission hole 25 l, the hot
water admission hole 252 of the base 25 of the ceramic control valve
20 are joined with the cold water guide hole 12 and the hot water
guide hole 13 of the assembly slot 11 of the rear valve seat 1 O 1. In the
meantime, the water discharging hole 253 of the base 25 is joined
with the upper discharging hole 14 of the rear valve seat 101. The
water stopping surface 254 of the base 25 is airtightly joined with the
lower discharging hole 15 of the assembly slot 11. The working
mechanism of the ceramic control valve 20 in relation to the rear
valve seat 101 is identical to that of the ceramic control valve 20 in
relation to the front valve seat 10 as described above with reference to
s

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FIGS. 6-9.
The present invention described above is to be regarded in all
respects as being illustrative and nonrestrictive. Accordingly, the
present invention may be embodied in other specific forms without
deviating from the spirit thereof. The present invention is therefore to
be limited only by the scopes of the following claims.

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