Patent Description:
The switch (button switch or wrench switch) of the flushing valve for the existing toilet is directly locked on the water tank cover through thread connection, and can be directly disassembled simply by rotating the switch body without the aid of special tools.

The drain valve switch used at home is safe and will not be disassembled and taken away at will. However, the switch installed in the public place is likely to be damaged or unscrewed and taken away by someone as it is very simple and easy to disassemble it, making it impossible to drive the drain valve in the water tank, and thereby resulting in the problem of extremely poor public health due to the toilet failure. <CIT> relates to an actuating device for a drain fitting, disclosing a clutch mechanism that allows the orientation of the button of a toilet flush to be adjusted. <CIT> relates to a height adjustable uploader for toilet cisterns.

To resolve the foregoing technical problem, the present disclosure provides a flushing valve actuator, including a switch body, a switch mounted in the switch body, a thread member, and a clutch structure comprising a linkage member movable between a first position and a second position; when the linkage member is located at the first position, the switch body drives the thread member to rotate through the linkage member, thus allowing locking or unlocking of the entire flushing valve actuator on an installation position of a water tank or another device; when the linkage member is located at the second position, the linkage member disconnects the linkage between the switch body and the thread member, the thread member cannot be driven to screw out of the installation position even if the switch body is rotated.

When the flushing valve actuator is assembled or disassembled, the linkage member is first placed at the first position, the switch body is made to link the thread member through the linkage member, and the thread member is driven to rotate when the switch body is rotated, thus locking or unlocking the entire flushing valve actuator on an installation position of a water tank or another device. In normal use, the linkage member is adjusted to the second position. At this time, the linkage between the switch body and the thread member is disconnected, and the thread member cannot be driven to screw out of the installation position even if the switch body is rotated. As the disassembly method for the flushing valve actuator is unique and is different from the assembly method for the flushing valve actuator available on the market, thus ensuring that the flushing valve actuator is unlikely to be disassembled.

Optionally, the thread member and the switch body are rotatably mounted together, and the linkage member is movably mounted on the switch body or on the thread member.

Optionally, the linkage member includes a driving portion, and when the switch is located in an initial position, the switch covers the driving portion; the switch leaves the initial position after being driven and exposes the driving portion for driving, so that the linkage member moves between the first position and the second position. In this way, the linkage member is set in a hidden position, making it more difficult for a person who does not know the corresponding structure to completely disassemble the flushing valve actuator.

Optionally, the thread member is provided with a linkage fitting portion, and the linkage member is provided with a corresponding linkage portion; when the linkage member is located at the first position, the linkage portion and the linkage fitting portion are in circumferential transmission fit; when the linkage member is located at the second position, the linkage portion is separated from the linkage fitting portion.

Optionally, the switch is a button, and the switch body is a button body; an inner cavity with a top opening is formed inside the button body, and the bottom of the inner cavity is provided with a through hole; both the button and the linkage member are movably installed in the inner cavity, and the thread member rotatably penetrates through the through hole and is capable of being axially limited, and the linkage fitting portion on the thread member is located in the inner cavity, and a thread portion on the thread member is located outside the button body.

Optionally, the linkage member moves between the first position and the second position along the axial direction of the thread member; when the thread member is rotated, on a plane perpendicular to the axis of the thread member, a projection trajectory drawn by the linkage fitting portion partially overlaps with a projection of the linkage portion; when the linkage member is located at the first position, the linkage portion and the linkage fitting portion align in the axial direction of the thread member, and when the switch body is rotated, the linkage portion abuts against the linkage fitting portion to form circumferential transmission fit; when the linkage member is located at the second position, the linkage portion and the linkage fitting portion misalign in the axial direction of the thread member, and the thread member is able to rotate freely relative to the linkage member.

Optionally, the linkage member includes an adjusting piece and a spring pin, and the spring pin forms the linkage portion; a periphery of a portion of the thread member located inside the switch body is provided with a boss, and the boss forms the linkage fitting portion.

Optionally, the adjusting piece is movably mounted inside a strip groove formed in the switch body, and the length direction of the strip groove is parallel to the axis of the thread member, the spring pin is elastically supported between the adjusting piece and the switch body through an elastic member; the adjusting piece and a side wall of the strip groove are respectively provided with a retaining protrusion and a retaining groove; when the linkage member is located at the first position, the adjusting piece is located at a position where the retaining protrusion and the retaining groove are separated from each other, and the spring pin and the boss are in circumferential transmission fit under the influence of the elastic member, when the linkage member is located at the second position, the adjusting piece is located at a position where the retaining protrusion and the retaining groove are in retaining fit, and the adjusting piece overcomes the elastic force of the elastic member so that the spring pin and the boss misalign in the axial direction of the thread member; and a driving portion for manual or tool driving is disposed on a position of the adjusting piece close to the button.

Optionally, the thread member has an end located in the inner cavity and having an end diameter greater than a diameter of the through hole; and the flushing valve actuator further includes a thread member retaining cover, where the thread member retaining cover is provided with a thread hole corresponding to a thread of the thread member, the thread member retaining cover is screwed into a portion of the thread member extending out of the switch body, and the thread member is relatively rotatably mounted on the switch body through the thread member retaining cover and the end of the thread member located in the inner cavity.

Optionally, the thread member is a hollow structure open at both ends; a transmission rod penetrates through the thread member and has an end connected to the switch.

Correspondingly, a flushing valve includes the flushing valve actuator.

It can be seen from the foregoing description of the present disclosure that, compared with the prior art, a flushing valve actuator and a flushing valve of the present disclosure both include a switch, a switch body, a thread member and a clutch structure comprising a linkage member with a linkage function; a connection relationship between the switch body and the thread member can be switched by changing a position of the linkage member; when the linkage member is located at a first position so that the switch body and the thread member are in a linkage relationship, the thread member is driven by rotating the switch body, thus allowing locking or unlocking of the entire flushing valve actuator on an installation position of a water tank or another device; when the linkage member is at a second position so that the linkage relationship between the switch body and the thread member is disconnected, the switch body and the thread member are relatively independent of each other, and the installed thread member cannot be screwed out even if the switch body is rotated, ensuring that the entire flushing valve actuator cannot be easily removed and taken away.

The accompanying drawings described here are intended to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are intended to explain the present disclosure and do not impose improper limitation on the present disclosure.

The reference signs in <FIG> respectively indicate: <NUM>-button, <NUM>-button body, <NUM>-inner cavity, <NUM>-thread member, <NUM>-boss, <NUM>-linkage member, <NUM>-adjusting piece, <NUM>-spring pin, <NUM>-driving portion, <NUM>-elastic member, <NUM>-transmission rod, <NUM>-thread member retaining cover.

To make the technical problem to be solved by the present disclosure, the technical solution and beneficial effects more comprehensible, the present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present disclosure, rather than to limit the present disclosure.

Embodiment <NUM>: a flushing valve actuator includes a switch body, a switch mounted in the switch body, a thread member <NUM>, and a linkage member <NUM> movable between a first position and a second position; when the linkage member <NUM> is located at the first position, the switch body drives the thread member <NUM> to rotate through the linkage member, and the switch body is locked or unlocked through the thread member <NUM>; when the linkage member <NUM> is located at the second position, the linkage member <NUM> disconnects the linkage between the switch body and the thread member <NUM>, and the switch body cannot be locked or unlocked through the thread member <NUM>. The flushing valve actuator of the present disclosure may be installed on a water tank, a toilet or the like that contains a drain valve. When the switch body is rotated forward, the switch body can be locked on the water tank or the toilet through the thread member <NUM>, and when the switch body is rotated backward, the switch body can be unlocked from the water tank or the toilet through the thread member <NUM>.

When the flushing valve actuator is assembled, the linkage member <NUM> is placed at the first position first, and the switch body links the thread member <NUM> through the linkage member <NUM>. When the switch body is rotated, the thread member <NUM> is driven to rotate, thus locking the entire flushing valve actuator on the water tank, toilet or another device. After the installation is completed, the linkage member <NUM> is adjusted to the second position. At this time, the linkage between the switch body and the thread member <NUM> is disconnected, and the thread member <NUM> cannot be driven to screw out of the installation position even if the switch body is rotated, thereby ensuring uneasy assembly of the flushing valve actuator.

Embodiment <NUM>: referring to <FIG>, on the basis of Embodiment <NUM>, in this embodiment, the thread member <NUM> and the switch body are rotatably mounted together, and the linkage member <NUM> is movably mounted on the switch body. It is easy to understand that the linkage member <NUM> can also be movably mounted on the thread member <NUM>. Specifically, the switch is a button <NUM>, the button <NUM> includes a button decorative piece, the switch body is a button body <NUM>, and the thread member <NUM> is a hollow structure open at both ends; a transmission rod <NUM> penetrates through the thread member <NUM>, and one end of the transmission rod <NUM> is connected to the switch. When the button <NUM> is pressed down, the button <NUM> drives the transmission rod <NUM> to move downward, and the lower end of the transmission rod <NUM> actuates an activation assembly (not shown) of the drain valve, thus opening the drain valve to drain water. The flushing valve actuator also includes a button elastic member. After an external force pressing the button <NUM> is removed, under the influence of the button elastic member, the button <NUM> drives the transmission rod <NUM> to reset to initial positions together.

In this embodiment, the linkage member includes a driving portion <NUM>. When the button <NUM> is in an initial position, the button <NUM> covers the driving portion <NUM>; the button <NUM> leaves the initial position after being driven and exposes the driving portion <NUM> for driving, so that the linkage member moves between the first position and the second position.

Refer to <FIG>, an inner cavity <NUM> with a top opening is formed inside the button body <NUM>, and the bottom of the inner cavity <NUM> is provided with a through hole. Both the button <NUM> and the linkage member <NUM> are movably installed in the inner cavity <NUM>, and the thread member <NUM> rotatably penetrates through the through hole and is capable of being axially limited. A linkage fitting member on the thread member <NUM> described below is located in the inner cavity <NUM>, and a threaded portion on the threaded member is located outside the button body <NUM>.

One end of the thread member <NUM> extends through the through hole into the inner cavity <NUM> and is close to the linkage member <NUM>, and an end diameter of the thread member <NUM> at this end is greater than a diameter of the through hole to ensure that the thread member <NUM> will not fall off from the through hole.

A portion of the thread member <NUM> located in the inner cavity <NUM> is provided with a linkage fitting portion, and the linkage member <NUM> is provided with a corresponding linkage portion. When the linkage member <NUM> is located at the first position, the linkage portion and the linkage fitting portion are in circumferential transmission fit; when the linkage member <NUM> is located at the second position, the linkage portion is separated from the linkage fitting portion. Specifically, the linkage member <NUM> moves between the first position and the second position along the axial direction of the thread member <NUM>. When the thread member <NUM> is rotated, on a plane perpendicular to the axis of the thread member <NUM>, a projection trajectory drawn by the linkage fitting portion partially overlaps with a projection of the linkage portion (referring to <FIG>). When the linkage member <NUM> is located at the first position, the linkage portion and the linkage fitting portion align in the axial direction of the thread member <NUM>, and when the thread member <NUM> is rotated, the linkage portion abuts against the linkage fitting portion to form circumferential transmission fit. When the linkage member <NUM> is located at the second position, the linkage portion and the linkage fitting portion misalign in the axial direction of the thread member <NUM>, and the thread member <NUM> can rotate freely relative to the linkage member <NUM>.

In this embodiment, referring to <FIG>, the linkage member <NUM> includes an adjusting piece <NUM> and a spring pin <NUM>, the spring pin <NUM> forms the linkage portion; a periphery of a portion of the thread member <NUM> located inside the inner cavity <NUM> of the switch body <NUM> is provided with a boss <NUM>, and the boss <NUM> forms the linkage fitting portion. The adjusting piece <NUM> is movably mounted inside a strip groove formed in an inner wall of the inner cavity <NUM>, the length direction of the strip groove is parallel to the axis of the thread member <NUM>, the spring pin <NUM> is elastically supported between the bottom of the adjusting piece <NUM> and the bottom wall of the inner cavity <NUM> through an elastic member <NUM>, and the elastic member <NUM> is preferably a compression spring; the adjusting piece <NUM> and a side wall of the strip groove are respectively provided with a retaining protrusion and a retaining groove; when the linkage member <NUM> is located at the first position, the adjusting piece <NUM> is located at a position where the retaining protrusion and the retaining groove are separated from each other, the spring pin <NUM> and the boss <NUM> are in circumferential transmission fit under the influence of the elastic member <NUM>; when the linkage member <NUM> is at the second position, the adjusting piece <NUM> is located at a position where the retaining protrusion and the retaining groove are in retaining fit, and the adjusting piece <NUM> overcomes the elastic force of the elastic member <NUM> so that the spring pin <NUM> and the boss <NUM> misalign in the axial direction of the thread member <NUM>; and a driving portion <NUM> for manual or tool driving is disposed at a position of the adjusting piece <NUM> close to the button <NUM>. Specifically, the driving portion <NUM> is a toggle groove. During installation or assembly, a position of the adjusting piece <NUM> is toggled by using the toggle groove, thereby changing the position of the spring pin <NUM> so that the spring pin <NUM> moves between positions corresponding to and misalign with the boss <NUM>. Referring to <FIG> and <FIG>, when the button <NUM> is in an initial position, the button <NUM> covers the driving portion <NUM> of the linkage member <NUM>; in order to toggle the adjusting piece <NUM> in the switch body, the button <NUM> needs to be driven so that the button <NUM> leaves the initial position (as shown in <FIG>), thereby exposing the driving portion <NUM> of the linkage member <NUM>. In this way, as a position of the linkage member <NUM> is hidden, a person who does not know the corresponding structure is unable to completely disassemble the flushing valve actuator.

The flushing valve actuator further includes a thread member retaining cover <NUM>. The bottom of the thread member retaining cover <NUM> is provided with a thread hole corresponding to a thread of the thread member <NUM>, and the thread member retaining cover <NUM> is screwed into a portion of the thread member <NUM> extending out of the switch body, and the thread member <NUM> is rotatably mounted on the switch body through the thread member retaining cover <NUM> and an end of the thread member <NUM> located in the inner cavity <NUM>.

When the flushing valve actuator is assembled, the switch is placed to expose a driving portion of the adjusting piece <NUM>, and the adjusting piece <NUM> is toggled upward so that the adjusting piece <NUM> is located at a position where the retaining protrusion and the retaining groove are separated from each other. The spring pin <NUM> moves upward under the influence of the elastic member to circumferentially transmission-fit with the boss <NUM> (referring to <FIG>). At this time, the button body <NUM> is rotated to drive the thread member <NUM> through the adjusting piece <NUM>, the spring pin <NUM> and the boss <NUM>, thus assembling or disassembling the flushing valve actuator, that is, locking or unlocking the drain switch. After the installation is complete, the adjusting piece <NUM> is toggled downward so that the adjusting piece <NUM> is located at a position where the retaining protrusion and the retaining groove are in retaining fit, and the adjusting piece <NUM> overcomes the elastic force of the elastic member so that the spring pin <NUM> and the boss <NUM> misalign in the axial direction of the thread member <NUM> (referring to <FIG>), thereby releasing a linkage relationship between the button body <NUM> and the thread member <NUM>.

Embodiment <NUM>: a flushing valve actuator with a clutch structure in the foregoing embodiment.

Claim 1:
A flushing valve actuator comprising a switch body (<NUM>), a switch (<NUM>) mounted in the switch body (<NUM>), a thread member (<NUM>), and a clutch structure comprising a linkage member (<NUM>), characterised in that in use the linkage member (<NUM>) is movable between a first position and a second position; when the linkage member (<NUM>) is located at the first position, the switch body (<NUM>) drives the thread member (<NUM>) to rotate through the linkage member (<NUM>), thus allowing locking or unlocking of the entire flushing valve actuator on an installation position of a water tank or another device; when the linkage member (<NUM>) is located at the second position, the linkage member (<NUM>) disconnects the linkage between the switch body (<NUM>) and the thread member (<NUM>), thus the thread member (<NUM>) cannot be driven to screw out of the installation position even if the switch body (<NUM>) is rotated.