JP7508348B2 - Single Lever Faucet - Google Patents

Description

The present invention relates to a single-lever faucet. More specifically, it relates to a single-lever faucet having a decorative cover that forms the design surface of the faucet body, an operating shaft that passes through a cover through-hole formed in the decorative cover and extends outward from a connection with a hot and cold water mixing cartridge inside the faucet body, and a lever handle that extends from the end of the operating shaft that exits to the outside.

Patent Document 1 discloses a single-lever faucet that allows the adjustment of the temperature of hot and cold water discharged, switching between water discharge and stop, and adjusting the amount of water discharged by operating a lever handle attached to the head of the faucet body. The base of the lever handle is covered with a decorative cover. This makes it difficult for the gap formed between the lever handle and the faucet body to be exposed to the outside when the lever handle is moved up, down, left, and right around the operating shaft of the cartridge connected to the base.

Specifically, the lever handle is configured so that the operating shaft of the cartridge, which is connected to its base, passes through a through hole opened in the center of the decorative cover and is connected to the cartridge below the through hole. As a result, the lever handle is configured so that it can be moved integrally with the operating shaft relative to the cartridge so as to pivot left and right around the operating shaft and tilt up and down around the base end of the operating shaft.

A decorative plate is further provided on the lower part of the decorative cover, which slides relative to the decorative cover in response to the movement of the base of the lever handle. This decorative plate setting makes it difficult for the gap between the base and the decorative cover to be exposed to the outside, even if the through-hole of the decorative cover is formed wide to allow the movement of the lever handle.

Patent No. 4732530

In the above conventional technology, the decorative cover is configured to be positioned away from the base end of the operating shaft with the decorative plate sandwiched between them. This increases the rotation radius from the base end of the operating shaft, which tilts up and down within the through hole of the decorative cover, raising concerns that this will lead to an increase in the size of the through hole and ultimately the size of the decorative cover. Therefore, the present invention provides a single-lever faucet that makes it possible to reduce the size of the decorative cover.

In order to solve the above problems, the single-lever faucet of the present invention takes the following measures. That is, the single-lever faucet has a decorative cover that forms the design surface of the faucet body, an operating shaft that extends from the connection part with the hot and cold water mixing cartridge inside the faucet body to a cover through hole formed in the decorative cover, and a lever handle that is connected to the head of the operating shaft and is provided outside the cover through hole. The single-lever faucet further has a movable decorative plate that is provided in an overlapping manner on the design surface side of the decorative cover and covers the cover through hole from the outside, and the decorative plate slides on the decorative cover in response to the operation of the operating shaft to tilt its axis around the connection part with the cartridge as a fulcrum when the lever handle is operated.

The operating shaft may be long and protrude outward through the cover hole, or short and embedded within the faucet body without passing through the cover hole. If the operating shaft is short and does not pass through the cover hole, the base of the lever handle connected to the head of the operating shaft will pass through the cover hole.

With the above configuration, the decorative cover is positioned closer to the fulcrum of the tilting movement of the operating shaft than the decorative plate. Therefore, the diameter of the cover through hole, i.e., the diameter of the hole required to allow the tilting movement of the operating shaft, can be kept small, and the decorative cover can be made smaller.

The single-lever faucet of the present invention may be further configured as follows: The operating shaft is configured to be moved between an upright position in which it extends straight in the axial direction of the cover hole and a backward inclined position in which it is tilted from the upright position toward the back of the faucet by operating the lever handle. The cover hole is a round hole with its center eccentric to the back of the faucet from the axis of the operating shaft in the upright position.

With the above configuration, the cover through-hole can be shaped to be optimized according to the movable range of the operating shaft.

The single-lever faucet of the present invention may also be configured as follows: The base that is connected to the head of the operating shaft of the lever handle is passed through a plate through hole formed in the decorative plate.

The above configuration allows the base of the lever handle and the decorative plate to be positioned close to each other, while preventing the base of the lever handle from interfering with the decorative plate when the operating shaft is tilted by operating the lever handle. In addition, the bottom edge of the base of the lever handle is less likely to be exposed to the outside, further improving the appearance quality around the base.

The single-lever faucet of the present invention may also be configured as follows: The base of the lever handle is also passed through the cover through hole.

With the above configuration, the base of the lever handle is inserted deeply across the plate through-hole and the cover through-hole. Therefore, the bottom edge of the base of the lever handle is less likely to be exposed to the outside even when the operating shaft is tilted, further improving the appearance quality around the base.

The single-lever faucet of the present invention may also be configured as follows: The decorative cover is rectangular and the decorative plate is disc-shaped and smaller than the decorative cover.

The above configuration allows the decorative cover to have an angular rectangular shape without increasing its size, and the decorative plate can be made into a rounded disk shape that does not protrude from the decorative cover, further improving the appearance quality around the base.

The single-lever faucet of the present invention may also be configured as follows: The decorative cover forms the top surface of the faucet body.

The above configuration allows the appearance quality of the top surface to be appropriately improved even in a configuration in which the lever handle is provided on the top surface of the faucet body, which is easily visible to the user.

1 is a perspective view showing the schematic configuration of a single-lever faucet according to a first embodiment. FIG. 2 is a plan view of FIG. 1 . FIG. 2 is a partial cross-sectional perspective view of FIG. FIG. 4 is a cross-sectional view corresponding to FIG. 3 . 1 is a plan view showing an operational state in which the lever handle is raised from the neutral position. FIG. FIG. 6 is a cross-sectional view corresponding to FIG. 5 . 13 is a plan view showing the lever handle in an operational state when raised from the water side position. FIG. 13 is a plan view showing the operating state in which the lever handle is raised from the hot water side position. FIG. This is an exploded oblique view of the faucet body with the lever handle and other mounting parts removed.

Below, the form for implementing the present invention is explained with reference to the drawings.

First Embodiment
(General configuration of single-lever faucet 1)
First, the configuration of a single-lever faucet 1 according to a first embodiment of the present invention will be described with reference to Figures 1 to 9. In the following description, directions such as front, back, top, bottom, left, and right refer to the respective directions shown in each figure. In addition, in the following description, when a specific reference figure is not shown or when there is no reference number corresponding to a reference figure, any of Figures 1 to 9 will be referred to as appropriate.

As shown in FIG. 1, the single-lever faucet 1 according to this embodiment is a so-called countertop type mixer faucet that is installed on the top plate of a vanity unit (not shown). The single-lever faucet 1 has a function of mixing hot water and cold water supplied from the underside of the top plate (not shown) and discharging the water.

Specifically, the single-lever faucet 1 has a temperature control function that can internally adjust the mixing ratio of hot water and cold water supplied. The single-lever faucet 1 also has a switching function that can switch between discharging and stopping the mixed hot and cold water, and a discharge volume adjustment function that can adjust the amount of hot and cold water discharged.

The above-mentioned adjustment of the hot and cold water mixing ratio, switching between water on and off, and adjustment of the discharge volume are all performed by operating a single lever handle 3 attached to the top of the faucet body 2. Specifically, when the user grasps the operating part 3A at the tip of the lever handle 3 and operates it to change the rotation position left and right, the hot and cold water mixing cartridge 8 provided inside the faucet body 2 is operated, and the mixture ratio of hot and cold water mixed inside the faucet body 2 is adjusted to the set temperature according to the rotation position.

When a user grips the operating part 3A of the lever handle 3 and pulls it upward, an amount of hot water corresponding to the amount of rotational movement is discharged from the water outlet 2A located on the front of the faucet body 2. When a user returns the operating part 3A of the lever handle 3 from the raised position to its original height, the water discharge from the water outlet 2A is stopped.

A water outlet plate 4 is attached to the bottom of the water outlet 2A of the faucet body 2, which receives hot and cold water discharged from the water outlet 2A from below and sends it forward. The faucet body 2 is formed into an external shape that rises in a square tube shape from a top plate (not shown).

In this embodiment, the lever handle 3 is in a neutral position when it is pointed straight ahead (front) where the user stands, as shown in FIG. 2, and the rotational range from this neutral position to the right is the cold water setting range, which sets the temperature so that the supplied water is discharged at the same temperature regardless of the rotational position. The rotational range from the neutral position of the lever handle 3 to the left is the hot water setting range, which increases the mixing ratio of hot water as the amount of rotational operation increases.

As shown in Figures 3 and 4, the lever handle 3 has its base 3B passed from above through a cover through-hole 5A of a decorative cover 5 attached to the top of the faucet body 2, and is connected to an operating shaft 9 (plug rod) of a cartridge 8 provided inside the faucet body 2. In more detail, the lever handle 3 has its base 3B passed from above through a plate through-hole 6A of a decorative plate 6 provided in an overlapping manner on the top of the decorative cover 5, and is configured to be engaged so as to move along with the decorative plate 6 in the front-rear direction.

By setting the decorative plate 6, even if the cover through-hole 5A of the decorative cover 5 is formed wide to allow movement of the lever handle 3, the gap between the cover through-hole 5A and the base 3B is unlikely to be exposed to the outside. Below, the specific configuration of each part of the decorative structure will be explained in detail together with the surrounding structure.

(About the composition of each part)
Figure 9 shows an exploded perspective view of the main parts of the single-lever faucet 1. As shown in the figure, the single-lever faucet 1 comprises a faucet body 2, a lever handle 3, a water spout plate 4, a decorative cover 5, a decorative plate 6, a guide plate 7, a cartridge 8, and an operating shaft 9.

As shown in Figures 3 and 4, the lever handle 3 has a base 3B that extends in a truncated cone shape in the height direction, and an operating part 3A that extends in an arch shape from near the top of the base 3B toward the upper front side in the figure. The base 3B is passed from above through a plate through-hole 6A formed in the decorative plate 6 and a cover through-hole 5A formed in the decorative cover 5. The base 3B is integrally connected to a square rod-shaped operating shaft 9 that extends upward from a connection part with the head 8A of the cartridge 8 provided inside the faucet body 2.

Specifically, the base 3B is fitted onto the operating shaft 9 from above, and then fastened from behind with a screw B, so that it is integrally connected to the operating shaft 9. The lower end of the operating shaft 9 is rotatably connected to the head 8A of the cartridge 8 by a base shaft 9A extending in the left-right direction in the figure. Here, the base shaft 9A corresponds to the "connecting portion" of the present invention.

The head 8A of the cartridge 8 is assembled to the body 8B of the cartridge 8 by a fitting structure of two tubes that fit inside and outside each other, so that it can rotate around a central axis A that extends in the height direction of the cartridge 8. With the above configuration, the head 8A of the cartridge 8 rotates relative to the body 8B in accordance with the operation of moving the lever handle 3 left and right, and the mixing ratio of hot water and cold water within the body 8B is adjusted.

In addition, the cartridge 8 is designed to switch between water discharge and water stop within the main body 8B and adjust the amount of water discharged when the water is discharged by tilting the operating shaft 9 in accordance with the movement of the lever handle 3 up and down. Note that the cartridge 8 has the same publicly known configuration as that disclosed in documents such as JP 2020-46067 A, and therefore a detailed description of the configuration will be omitted.

As shown in Figures 3 and 4, when the lever handle 3 is in the water stop position before being pulled up, the operating shaft 9 is in an upright position extending straight upward along the axis of the central axis A of the cartridge 8. In more detail, when the lever handle 3 is in the water stop position, the operating shaft 9 only rotates around the central axis A and is maintained in an upright position even if the lever handle 3 is rotated left or right.

As shown in Figures 5-6, the operating shaft 9 is switched to a rearward tilted position about the base axis 9A by the water discharge operation in which the lever handle 3 is pulled up from the water stop position. In more detail, when the lever handle 3 is pulled up from the neutral position facing the front side described above in Figures 2-4, the operating shaft 9 is tilted straight toward the rear of the faucet body 2 about the base axis 9A, as shown in Figures 5-6.

However, as shown in FIG. 7, when the lever handle 3 is turned to the right from the neutral position and pulled up from the cold water setting area, the operating shaft 9 is tilted diagonally toward the left rear side of the faucet body 2 around the base axis 9A. Also, as shown in FIG. 8, when the lever handle 3 is turned to the left from the neutral position and pulled up from the hot water setting area, the operating shaft 9 is tilted diagonally toward the right rear side of the faucet body 2 around the base axis 9A.

As shown in Figures 2 to 4, the decorative cover 5 is configured as a rectangular plate-shaped decorative member that forms the design surface of the top plate of the faucet body 2. The decorative cover 5 is set by fitting it from above into the upper opening of the faucet body 2, which is formed into a square tube shape. By setting it in this manner, the decorative cover 5 is provided on the head of the faucet body 2 with an edge that overhangs slightly larger than the surrounding side surfaces of the faucet body 2. As a result, the decorative cover 5 is configured to form a design surface with good appearance quality, covering the parting line between the faucet body 2 from above with the overhanging edge.

A cover through hole 5A is formed in the approximate center of the decorative cover 5, penetrating in the height direction in a circular shape. This cover through hole 5A is formed to have a hole diameter larger than the outer diameter of the base 3B of the lever handle 3 that passes through the cover through hole 5A. Specifically, the cover through hole 5A is formed with a width that can accommodate the movements of the base 3B of the lever handle 3 together with the operating shaft 9, which rotates around the central axis A and is tilted backward from each rotated position, as a result of the operation of moving the lever handle 3 up and down and left and right, as described above in Figures 2 to 8.

More specifically, the cover through hole 5A is formed in a round hole shape that widens significantly toward the rear from a position immediately in front of the base 3B when the operating shaft 9 is in the upright position, because the base 3B of the lever handle 3 and the operating shaft 9 can be tilted from the upright position shown in Figure 3-4 toward the rear as shown in Figure 6, but cannot be tilted toward the front. As a result, the cover through hole 5A is formed in a round hole shape with the center of the hole at a position eccentric to the rear side from the axis (central axis A) of the operating shaft 9 in the upright position (see Figures 2-4, etc.).

As shown in Figures 2 to 4, the decorative plate 6 is disposed on top of the decorative cover 5 and is configured as a disc-shaped decorative member that covers the cover through hole 5A of the decorative cover 5 from above. The decorative plate 6 is smaller than the decorative cover 5 and has a disc shape with a diameter larger than the cover through hole 5A opened in the decorative cover 5. A plate through hole 6A is formed in the center of the decorative plate 6, penetrating in the height direction in a circular hole shape.

The plate through hole 6A is shaped to have a smaller hole diameter than the cover through hole 5A described above. More specifically, the plate through hole 6A is shaped to have a hole diameter slightly larger than the outer diameter of the base 3B of the lever handle 3 that is passed through the plate through hole 6A. As a result, as shown in Figures 3 to 4 and 6, the decorative plate 6 slides forward and backward on the decorative cover 5, being pulled along by the base 3B as the base 3B of the lever handle 3 that is passed through the plate through hole 6A moves up and down and is tilted toward the back or returned to an upright position.

When the base 3B of the lever handle 3 that is passed through the plate through hole 6A is rotated by the left and right movement of the lever handle 3, the decorative plate 6 allows the base 3B to rotate inside the plate through hole 6A, but does not follow the movement of the lever handle 3. The decorative plate 6 has a cylindrical lower tube portion 6B on its underside that protrudes downward along the periphery of the plate through hole 6A.

The lower cylinder 6B is passed from above through the cover through hole 5A of the cosmetic cover 5 as the cosmetic plate 6 is set on the cosmetic cover 5. The lower cylinder 6B is also passed from above through the ring of the ring-shaped guide plate 7, which is set on top of the lower part of the cosmetic cover 5 from below. Then, a C-ring 6C (C-shaped retaining ring) is fitted into the outer periphery of the lower cylinder 6B at the point where it is passed through, and the guide plate 7 is set in a state where it is sandwiched between the C-ring 6C and the cosmetic cover 5.

The guide plate 7 is in the shape of a disk with a diameter larger than the cover through hole 5A. Therefore, with the above assembly, the decorative plate 6 is set in a state where it is prevented from slipping out upward from the decorative cover 5, and can slide back and forth on the decorative cover 5 in response to the operation of the lever handle 3.

The operating shaft 9 connected to the head 8A of the cartridge 8 is configured to be set in a state where it passes through the cover through hole 5A of the decorative cover 5 and the plate through hole 6A of the decorative plate 6 and protrudes upward from the faucet body 2. As a result, when the base 3B of the lever handle 3 is attached to the operating shaft 9, even when the decorative cover 5 and the decorative plate 6 are set on the head of the faucet body 2, the operating shaft 9 protrudes upward from these, making it easy to see from the outside and facilitating the installation work.

The base 3B of the lever handle 3 is configured to be connected to the operating shaft 9 by being inserted deeply from above to a position where it straddles the plate through-hole 6A of the decorative plate 6 and the cover through-hole 5A of the decorative cover 5. This allows the base 3B of the lever handle 3 to be connected to the operating shaft 9 with high connection strength. In addition, the deep insertion of the base 3B of the lever handle 3 makes it difficult for the bottom edge to be exposed to the outside.

In more detail, as shown in FIG. 6, even if the base 3B of the lever handle 3 is tilted around the base axis 9A, which is the fulcrum for the tilting of the operating shaft 9, by pulling it up, its bottom edge is located inside the lower cylindrical portion 6B of the decorative plate 6, and it is not pulled up through the plate through hole 6A. With the above configuration, the appearance quality around the base 3B of the lever handle 3 is appropriately improved.

The decorative cover 5 is configured to be located below the decorative plate 6, not above it. For this reason, the decorative cover 5 is positioned closer to the base axis 9A, which is the fulcrum for the tilting of the operating shaft 9, than the decorative plate 6, and is configured to be able to reduce the hole diameter required for the cover through hole 5A, i.e., the hole diameter required to allow the tilting of the operating shaft 9 to escape. As a result, the diameter required for the decorative cover 5 is also reduced, and the appearance quality of the head of the faucet body 2 is appropriately improved through the miniaturization of the decorative cover 5.

In addition, because the decorative plate 6 is configured to cover the cover passage hole 5A of the decorative cover 5 from above, rather than from below, water is less likely to enter the cover passage hole 5A, which opens larger than the base axis 9A of the lever handle 3, from above. In addition, the top plate shape of the faucet body 2 formed by the decorative cover 5 and the decorative plate 6 has a stepped shape that is convex upward rather than concave downward, so foreign matter such as water and dust is less likely to accumulate on the top plate. Therefore, the appearance quality of the head of the faucet body 2 can be appropriately improved from this point of view. In addition, the head of the faucet body 2 can be configured to be easier to clean.

(summary)
To summarize the above, the single-lever faucet 1 according to the first embodiment has the following configuration. Note that the reference characters in parentheses below are reference characters corresponding to the respective components shown in the above embodiment.

That is, the single-lever faucet (1) has a decorative cover (5) that forms the design surface of the faucet body (2), an operating shaft (9) that extends from the connection with the hot and cold water mixing cartridge (8) inside the faucet body (2) to a cover through hole (5A) formed in the decorative cover (5), and a lever handle (3) that is connected to the head of the operating shaft (9) and is provided outside the cover through hole (5A). The single-lever faucet (1) further has a movable decorative plate (6) that is provided on the design surface side of the decorative cover (5) in an overlapping manner and covers the cover through hole (5A) from the outside.

The decorative plate (6) slides on the decorative cover (5) in response to the operation of the operating shaft (9) tilting its axis around the connecting part (9A) with the cartridge (8) as a fulcrum by operating the lever handle (3). With the above configuration, the decorative cover (5) is positioned closer to the fulcrum of the tilting of the operating shaft (9) than the decorative plate (6). Therefore, the hole diameter required for the cover through hole (5A), i.e., the hole diameter required to allow the tilting of the operating shaft (9) to escape, can be kept small, and the decorative cover (5) can be made smaller.

The operating shaft (9) is configured to be moved between an upright position extending straight in the axial direction of the cover hole (5A) and a backward inclined position tilted from the upright position toward the back of the faucet by operating the lever handle (3). The cover hole (5A) is a round hole with its center eccentric to the back of the faucet from the axis of the operating shaft (9) in the upright position. With the above configuration, the cover hole (5A) can be shaped to be optimized according to the movable range of the operating shaft (9).

In addition, the base (3B) connected to the head of the operating shaft (9) of the lever handle (3) is passed through a plate through hole (6A) formed in the decorative plate (6). With the above configuration, the base (3B) of the lever handle (3) and the decorative plate (6) are arranged close to each other, while preventing the base (3B) of the lever handle (3) from interfering with the decorative plate (6) when the operating shaft (9) is tilted by operating the lever handle (3). In addition, the bottom edge of the base (3B) of the lever handle (3) is less likely to be exposed to the outside, further improving the appearance quality around the base (3B).

The base (3B) of the lever handle (3) is also passed through the cover through hole (5A). With the above configuration, the base (3B) of the lever handle (3) is inserted deeply across the plate through hole (6A) and the cover through hole (5A). Therefore, the bottom edge of the base (3B) of the lever handle (3) is less likely to be exposed to the outside even when the operating shaft (9) is tilted, further improving the appearance quality around the base (3B).

The decorative cover (5) is rectangular, and the decorative plate (6) is disc-shaped and smaller than the decorative cover (5). With the above configuration, the decorative cover (5) can be made rectangular and angular without increasing its size, and the decorative plate (6) can be made rounded and disc-shaped so as not to protrude from the decorative cover (5), further improving the appearance quality around the base (3B).

The decorative cover (5) also forms the top surface of the faucet body (2). With the above configuration, even if the lever handle (3) is provided on the top surface of the faucet body (2) that is easily visible to the user, the appearance quality of the top surface can be appropriately improved.

Other embodiments
Although one embodiment of the present invention has been described above, the present invention can be embodied in various forms as described below in addition to the above embodiment.

1. The single-lever faucet of the present invention may be a pedestal type that is installed on the top plate of a vanity unit, or a wall-mounted type that is installed on the wall of a bathroom. The single-lever faucet may also be a type in which the lever handle is provided on the head of the faucet body, or a type in which it is attached horizontally to the side of the faucet body. The single-lever faucet may also be a type in which a stepped base is located lower than the head of the faucet body, and the lever handle is attached vertically to this base.

2. In accordance with the mounting position of the lever handle, the decorative cover forming the design surface of the faucet body may have a cover through hole at a position forming the top surface of the faucet body, as well as the peripheral side surface of the faucet body or the top surface of the base that is located lower than the head. The cover through hole may be a round hole that is concentric with the axis of the operating shaft of the cartridge. In addition to a round hole shape, the cover through hole may be rectangular, triangular, or other irregular hole shapes. The shape of the decorative cover is formed appropriately according to the form of the faucet body and its application position, and is not limited to a rectangular plate shape, but may be a disk or other irregular plate shape.

3. Similarly, the decorative plate is formed into a shape appropriate for the shape of the decorative cover, and is not limited to a circular plate shape, but may be a rectangular plate or other irregular plate shape. The plate through hole formed in the decorative plate is formed into a shape appropriate for the shape of the base of the lever handle (or the shape of the operating shaft if the base is not passed through and only the operating shaft is passed through), and may be a shape other than a round hole.

4. The operating shaft does not necessarily have to protrude to the outside through the cover through-hole of the decorative cover and the plate through-hole of the decorative plate; it may pass only through the cover through-hole, or may have a short shape that is buried within the faucet body without passing through the cover through-hole either. Even in such a configuration, it is sufficient as long as the operating shaft can be connected to the base of the lever handle. Note that if the operating shaft extending from the connection part with the cartridge is short enough not to pass through the cover through-hole, the base of the lever handle that is connected to the head of this operating shaft will be provided through the cover through-hole.

5. The base of the lever handle does not necessarily have to be connected to the head of the operating shaft through the plate through-hole of the decorative plate and the cover through-hole of the decorative cover. In other words, the base of the lever handle may be inserted into the operating shaft only up to a position where it passes through the plate through-hole but not through the cover through-hole, or where it does not pass through the plate through-hole either. Even with this configuration, it is possible for the decorative plate to follow the movement of the base of the lever handle or the operating shaft that passes through the plate through-hole.

REFERENCE SIGNS LIST 1 Single-lever faucet 2 Faucet body 2A Spout 3 Lever handle 3A Operating section 3B Base 4 Spout plate 5 Decorative cover 5A Cover through hole 6 Decorative plate 6A Plate through hole 6B Lower cylinder 6C C-ring 7 Guide plate 8 Cartridge 8A Head 8B Main body 9 Operating shaft 9A Base shaft (connecting section)
B Screw A Central axis

Claims (6)

A single-lever faucet having a decorative cover that forms the design surface of a faucet body, an operating shaft that extends from a connection part with a hot and cold water mixing cartridge in the faucet body to a cover through hole formed in the decorative cover, and a lever handle that is connected to a head part of the operating shaft and provided outside the cover through hole,
Furthermore, the single-lever faucet has a movable decorative plate that is arranged to be superimposed on the decorative surface side of the decorative cover in a flat manner and cover the cover through-hole from the outside, and the decorative plate is flat and slides over the decorative cover in response to the operation of the operating axis tilting the axis with the connection part with the cartridge as a fulcrum by operating the lever handle. A single-lever faucet having a decorative cover that forms the design surface of a faucet body, an operating shaft that extends from a connection part with a hot and cold water mixing cartridge in the faucet body to a cover through hole formed in the decorative cover, and a lever handle that is connected to a head part of the operating shaft and provided outside the cover through hole,
Further, the present invention has a movable decorative plate that is provided on the design surface side of the decorative cover in an overlapping manner to cover the cover through hole from the outside, the decorative plate sliding on the decorative cover in response to the operation of the operation shaft to tilt the shaft about the connecting portion with the cartridge as a fulcrum by the operation of the lever handle,
The operating shaft is configured to be moved between an upright position in which it extends straight in the hole axis direction of the cover through hole and a backward inclined position in which it is inclined from the upright position toward the back of the faucet by operating the lever handle,
A single-lever faucet in which the cover through-hole is a circular hole having a center at a position eccentric to the back of the faucet relative to the axis of the operating shaft in the upright position . A single-lever faucet having a decorative cover that forms the design surface of a faucet body, an operating shaft that extends from a connection part with a hot and cold water mixing cartridge in the faucet body to a cover through hole formed in the decorative cover, and a lever handle that is connected to a head part of the operating shaft and provided outside the cover through hole,
Further, the present invention has a movable decorative plate that is provided on the design surface side of the decorative cover in an overlapping manner to cover the cover through hole from the outside, the decorative plate sliding on the decorative cover in response to the operation of the operation shaft to tilt the shaft about the connecting portion with the cartridge as a fulcrum by the operation of the lever handle,
A single-lever faucet in which a base portion of the lever handle that is connected to the head portion of the operating shaft is passed through a plate through hole formed in the decorative plate . The single-lever faucet according to claim 3,
A single-lever faucet in which the base of the lever handle is also passed through the cover through-hole. A single-lever faucet having a decorative cover that forms the design surface of a faucet body, an operating shaft that extends from a connection part with a hot and cold water mixing cartridge in the faucet body to a cover through hole formed in the decorative cover, and a lever handle that is connected to a head part of the operating shaft and provided outside the cover through hole,
Further, the present invention has a movable decorative plate that is provided on the design surface side of the decorative cover in an overlapping manner to cover the cover through hole from the outside, the decorative plate sliding on the decorative cover in response to the operation of the operation shaft to tilt the shaft about the connecting portion with the cartridge as a fulcrum by the operation of the lever handle,
A single-lever faucet in which the decorative cover is rectangular in shape and the decorative plate is circular in shape and smaller than the decorative cover . A single-lever faucet according to any one of claims 1 to 5,
A single-lever faucet in which the decorative cover forms the top surface of the faucet body.

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