A pull-up driving device for a concealed water tank

Abstract

The application discloses a hidden water tank pull driving device, which is used for driving connection of a pull rod of a drain valve, a drain button and / or a telescopic air bag, and comprises a fixing frame and a rotating shaft. The fixing frame is fixedly installed in the water tank, and the rotating shaft is transversely pivoted on the fixing frame. A swing hook is radially protruded on the rotating shaft, and the end of the swing hook swings up and down along with the pivoting of the rotating shaft. The swing hook is used for connecting the pull rod. First and second driving arms are also radially protruded on the rotating shaft. The fixing frame is also used for detachably installing the telescopic air bag. The first driving arm is pushed by the telescopic air bag to drive the rotating shaft to pivot. The second driving arm is detachably connected with the drain button. The application realizes that the user can select the mechanical button and / or the air control mode to drive the drain valve to switch the water draining according to the user's own needs, and has stronger universality.

Description

Technical Field

[0001] This invention relates to the field of water tank technology, and in particular to a lifting drive device for a concealed water tank. Background Technology

[0002] Currently, there are pull-out toilet tank drain valves. These drain valves are installed at the bottom of the toilet tank and have a pull rod at the top. The pull rod slides longitudinally. Pulling up the pull rod opens the drain valve and drains the toilet tank. When the pull rod returns to its original position, it closes the drain.

[0003] Currently, the drive devices used to move the lifting rod up and down to switch the toilet tank drain include mechanical button type and pneumatic drive type. If a drive device could be designed that can satisfy both mechanical button drive and pneumatic drive, users would be able to choose the drive method of the drain valve according to their own needs after purchase, making it more versatile. Summary of the Invention

[0004] The purpose of this invention is to provide a pull-up drive device for a concealed water tank, which overcomes the above-mentioned defects and enables drainage by selecting the drain valve to be switched on and off via mechanical buttons and / or pneumatic control according to the user's own needs, thus having greater versatility.

[0005] To achieve the above objectives, the solution of the present invention is: a lifting drive device for a concealed water tank, used to drive the lifting rod of the drain valve to connect the drain button and / or the telescopic airbag, including a fixing frame and a rotating shaft;

[0006] The fixed frame is installed and fixed inside the water tank. The rotating shaft is pivotally connected to the fixed frame laterally. The rotating shaft has a radially protruding swing hook. The end of the swing hook swings up and down with the pivoting of the rotating shaft. The swing hook is used to connect the lifting rod.

[0007] The rotating shaft also has a first drive arm and a second drive arm that protrude radially. The fixing frame is also used to detachably install the telescopic airbag. The first drive arm is pushed by the telescopic airbag to drive the rotating shaft to pivot. The second drive arm is detachably driven to connect the drain button.

[0008] Furthermore, the rotating shaft includes a rotating shaft body and a sliding bushing;

[0009] The main body of the rotating shaft is laterally pivotally connected to the fixed frame, and the swing hook protrudes radially from the main body of the rotating shaft.

[0010] The sliding bushing is circumferentially engaged and axially slidably fitted around the outer periphery of the rotating shaft body, and the first drive arm and the second drive arm protrude radially from the sliding bushing.

[0011] Furthermore, the inner wall of the sliding bushing has a protrusion forming a limiting protrusion, and the outer wall of the rotating shaft body has a concave groove forming a limiting groove. The limiting groove allows the limiting protrusion to sink into it, thereby limiting the axial sliding of the sliding bushing on the rotating shaft body.

[0012] Furthermore, a connecting nut is laterally pivotally connected to the end of the second drive arm. The connecting nut is used to screw a connecting rod, which is used to connect the drain button.

[0013] Furthermore, the telescopic airbag includes an airbag body and an airbag cover, and is connected to an air source device. The airbag body is detachably mounted and fixed on a fixed frame. The air source device drives the airbag cover to extend and retract on the airbag body, and the first drive arm is abutted by the airbag cover.

[0014] Furthermore, an installation plate is fixed to the inner wall of the water tank, the air source device is fixed to the installation plate and connected to the telescopic airbag through an air supply hose, and the fixing bracket is detachably installed on the installation plate.

[0015] Furthermore, the side wall of the lifting rod has a lifting hole, and the head of the swing hook passes through the lifting hole so that when the head of the swing hook swings upward, the lifting rod is lifted to open the drain valve and drain water, and when the head of the swing hook swings downward, the lifting rod is lowered to close the drain valve and drain water.

[0016] The upper edge of the swing hook has a raised arc-shaped mating surface at the contact point with the lifting hole. As the swing hook rotates, it contacts and lifts the lifting hole at different positions on the arc-shaped mating surface, so that the swing hook only applies longitudinal force to the lifting rod.

[0017] Furthermore, the side protrusion of the swing hook forms a limiting protrusion, which is used to abut against the side wall of the lifting rod to limit the swing of the lifting rod.

[0018] Furthermore, the head end of the swing hook protrudes upward to form an anti-disengagement hook, which is used to prevent the swing hook from disengaging from the lifting hole.

[0019] After adopting the above solution, the beneficial effects of the present invention are as follows: the fixed frame is installed and fixed inside the water tank, the rotating shaft is laterally pivotally connected to the fixed frame, the rotating shaft has a first drive arm and a second drive arm radially protruding, the fixed frame is detachably installed with a telescopic airbag, the first drive arm is pushed by the telescopic airbag to drive the rotating shaft to pivot, the second drive arm is detachably connected to the drain button, pressing the drain button can also drive the rotating shaft to pivot, the radially protruding swing hook on the rotating shaft swings up and down with the pivot of the rotating shaft, the swing hook is used to connect the lifting rod, when the swing hook swings up, it drives the lifting rod to move up, when the swing hook swings down, it drives the lifting rod to move down, realizing the opening and closing of the drain valve to drain water. In addition, the user can choose to install the telescopic airbag and / or connect the drain button according to their own needs to realize the mechanical button drive and / or pneumatic drive of the drain valve, which has stronger versatility. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention installed inside a water tank;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the telescopic airbag of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the second drive arm driving the drainage button of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure when the pendulum hook swings to its lowest position;

[0026] Figure 7 This is a schematic diagram of the structure when the pendulum hook swings to the middle position;

[0027] Figure 8 This is a schematic diagram of the structure when the pendulum hook swings to its highest position;

[0028] Figure 9 A three-dimensional structural diagram of the sliding bushing when it slides to the extreme position on one side of the rotating shaft body;

[0029] Figure 10 A three-dimensional structural diagram of the sliding bushing when it slides to the extreme position on the other side of the rotating shaft body;

[0030] Figure 11 This is an exploded view of the sliding bushing after it has been removed from the rotating shaft body.

[0031] Figure 12 for Figure 11 A magnified view of a section at point B.

[0032] Labeling Explanation: 1-Drain valve, 2-Lifting rod, 3-Drain button, 4-Telescopic airbag, 5-Fixing frame, 6-Rotating shaft, 7-Water tank, 8-Hook, 9-First drive arm, 10-Second drive arm, 11-Rotating shaft body, 12-Sliding bushing, 13-Limiting protrusion, 14-Limiting groove, 15-Connecting nut, 16-Connecting rod, 17-Airbag body, 18-Airbag cover, 19-Air source device, 20-Mounting plate, 21-Lifting hole, 22-Arc-shaped mating surface, 23-Limiting protrusion, 24-Anti-disengagement hook, 25-Receiving cavity, 26-Airbag. Detailed Implementation

[0033] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] This invention provides a lifting drive device for a concealed water tank, such as... Figure 1-12 As shown, the focus here is on combining... Figure 1-3 As shown, it includes a fixed frame 5 and a rotating shaft 6, which are used to drive the pull rod 2 of the drain valve 1 to connect the drain button 3 and / or the telescopic airbag 4. The drain button 3 can be any kind of mechanical press-type drain button that is set on the surface of the toilet tank. The telescopic airbag 4 can be any kind of pneumatic telescopic mechanism that extends after air intake and shortens after air exhaust.

[0035] Key points combined Figure 1-3 As shown, the fixing frame 5 is installed and fixed inside the water tank 7 and located above the drain valve 1. The structure of installing and fixing the fixing frame 1 inside the water tank 7 is not specifically limited. The rotating shaft 6 is laterally pivotally connected to the fixing frame 5. A swing hook 8 is radially protruding on the rotating shaft 6. The end of the swing hook 8 swings up and down with the pivoting of the rotating shaft 6. The swing hook 8 is used to connect the lifting rod 2. The connection structure between the swing hook 8 and the lifting rod 2 can be any existing structure that lifts the lifting rod 2 by swinging the swing hook 8. Preferably, in this embodiment, the side wall of the lifting rod 2 has a lifting hole 21. The head of the swing hook 8 passes through the lifting hole 21 so that when the head of the swing hook 8 swings up, the lifting rod 2 is lifted up, so that the drain valve 1 opens to drain water. When the head of the swing hook 8 swings down, the lifting rod 2 is lowered, so that the drain valve 1 closes to drain water (the opening and closing structure of the lifting type drain valve 1 is existing technology and will not be described in detail in this embodiment).

[0036] Key points combined Figure 2-4As shown, the rotating shaft 6 also has a first drive arm 9 and a second drive arm 10 protruding radially. The fixing frame 5 is also used to detachably install the telescopic airbag 4. To avoid corrosion damage caused by the telescopic airbag 4 being immersed in the water tank 7 for a long time, the telescopic airbag 4 is installed on the fixing frame 5 at a position higher than the water level in the water tank 7. In order to save space, the airbag 4 is arranged horizontally. The structure for detachably installing the airbag 4 on the fixing frame 5 can be screwed or snap-fit, etc., without specific limitation. The first drive arm 9 is pushed by the telescopic airbag 4 to drive the rotating shaft 6 to pivot, and then combined with Figure 5 As shown, the second drive arm 10 is detachably connected to the drain button 3. The connection structure between the second drive arm 10 and the drain button 3 can be any existing mechanism, such as a crank-slider, capable of converting the linear motion of the drain button 3 into the pivoting motion of the rotating shaft 6; there is no specific limitation. Furthermore, the user can choose to install a telescopic airbag 4 to achieve pneumatic control of the drain valve 1 to open or close, or choose to connect the second drive arm 10 to the drain button 3 to achieve mechanical control of the drain valve 1 to open or close. (Focus on...) Figure 9 , Figure 10 As shown, since the drain button 3 is positioned differently on different toilet tanks, to further improve versatility, the rotating shaft 6 includes a rotating shaft body 11 and a sliding bushing 12; the rotating shaft body 11 is laterally pivotally connected to the fixed frame 5, and the swing hook 8 protrudes radially from the rotating shaft body 11; the sliding bushing 12 is circumferentially engaged and axially slidably fitted around the outer circumference of the rotating shaft body 11, and the first drive arm 9 and the second drive arm 10 protrude radially from the sliding bushing 12. The structure of the sliding bushing 12 being circumferentially engaged and axially slidably connected to the rotating shaft body 11 is not specifically limited, but further emphasized in conjunction with... Figure 11 As shown, specifically in this embodiment, the rotating shaft body 11 has a semi-circular cross-section, and the sliding sleeve 12 has a semi-circular hole. The sliding sleeve 12 is fitted onto the rotating shaft body 11 through the semi-circular hole, so that the sliding sleeve 12 and the rotating shaft body 11 are circumferentially engaged to transmit torque. At the same time, it also allows the sliding sleeve 12 to slide axially along the rotating shaft body 11. Thus, the relative position between the sliding sleeve 12 and the rotating shaft body 11 can be adjusted according to the actual position of the drain button 3 on the water tank 7, so as to ensure that the second drive arm 10 can be connected to the drain button 3 on water tanks 7 of different manufacturers and models. Further, in conjunction with... Figure 12 As shown, in a more preferred embodiment, the inner wall of the sliding bushing 12 protrudes to form a limiting protrusion 13, and the outer wall of the rotating shaft body 11 is recessed to form a limiting groove 14. The limiting groove 14 allows the limiting protrusion 13 to sink into, thereby limiting the axial sliding of the sliding bushing 12 on the rotating shaft body 11. Further emphasis is placed on... Figure 5As shown, in a more preferred embodiment, a connecting nut 15 is laterally pivotally connected to the end of the second drive arm 10. The connecting nut 15 is used to screw a connecting rod 16, which is used to connect the drain button 3. Thus, according to the actual distance from the drain button 3 to the connecting nut 15, connecting rods 16 of different lengths can be replaced, or the distance between the connecting nut 15 and the drain button 3 can be adjusted by rotating the telescopic rod 16, so as to further improve versatility.

[0037] Key points combined Figure 2-4 As shown in the specific embodiment, the telescopic airbag 4 includes an airbag body 17 and an airbag cover 18, and is connected to an air source device 19. The air source device 19 can be any existing device capable of pumping out high-pressure gas, such as an air pump. The airbag body 17 is detachably mounted and fixed on the fixing frame 5. The airbag body 17 forms a receiving cavity 25 with one end open. The airbag cover 18 is inserted into the receiving cavity 25. An airbag 26 is disposed in the receiving cavity 25. One end of the airbag 26 is fixed in the receiving cavity 25, and the other end is fixed on the airbag cover 18. The air source device 19 is connected to the airbag 26. When the air source device 19 pumps air into the airbag 26, the airbag 26 expands to push the airbag cover 18 out of the receiving cavity 25. When the airbag 26 deflates and contracts, it drives the airbag cover 18 to retract into the receiving cavity 25. The first driving arm 9 is driven by the airbag cover 18. An installation plate 20 is fixed on the inner wall of the water tank 7. The air source device 19 is fixed on the installation plate 20 and is connected to the telescopic airbag 4 through an air supply hose. The fixing bracket 5 is detachably installed on the installation plate 20.

[0038] Key points combined Figure 6-8 As shown, since the swing hook 8 rotates around its axis during the lifting of the lifting rod 2, it applies not only an upward pulling force to the lifting rod 2 but also a horizontal force, causing the lifting rod 2 to tend to swing horizontally or even swing. This results in friction or even interference between the lifting rod 2 and other components inside the drain valve 1, making the opening and closing of the drain valve 1 less smooth. Over time, this will also affect the drainage stability and service life of the drain valve 1. To prevent the above problems, preferably in this embodiment, the upper edge of the swing hook 8 has a centrally raised arc-shaped mating surface 22 at the contact point with the lifting hole 21. As the swing hook 8 swings, it contacts and lifts the lifting hole 21 at different positions on the arc-shaped mating surface 22, so that the swing hook 8 only applies a longitudinal force to the lifting rod 2. The side protrusion of the swing hook 8 forms a limiting protrusion 23, which abuts against the side wall of the lifting rod 2 to limit the swing of the lifting rod 2. The head end of the swing hook 8 protrudes upward to form an anti-disengagement hook 24, which is used to prevent the swing hook 8 from disengaging from the lifting hole 21.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. All equivalent changes made based on the key design features of this case shall fall within the protection scope of this case.

Claims

1. A pull-up driving device of a concealed water tank, used for driving a pull rod (2) of a drain valve (1) to connect a drain button (3) and / or a telescopic air bag (4), characterized in that: It comprises a fixed frame (5) and a rotating shaft (6); The fixed frame (5) is fixedly installed in a water tank (7), the rotating shaft (6) is transversely pivoted on the fixed frame (5), the rotating shaft (6) is radially protruded with a swing hook (8), the swing hook (8) is used for connecting a pull rod (2), and the swing hook (8) end swings up and down with the pivoting of the rotating shaft (6). The rotating shaft (6) is further radially protruded with a first driving arm (9) and a second driving arm (10), the fixed frame (5) is further used for detachably installing an elastic air bag (4), the first driving arm (9) is pushed by the elastic air bag (4) to drive the rotating shaft (6) to pivot, and the second driving arm (10) is detachably connected with a water drainage button (3). The rotating shaft (6) comprises a rotating shaft body (11) and a sliding shaft sleeve (12), the rotating shaft body (11) is transversely pivoted on the fixed frame (5), the swing hook (8) is radially protruded on the rotating shaft body (11), and the sliding shaft sleeve (12) is circumferentially clamped and axially slidably sleeved on the outer periphery of the rotating shaft body (11), and the second driving arm (10) is radially protruded on the sliding shaft sleeve (12). The side wall of the pull rod (2) is penetrated by a pull hole (21), the head of the swing hook (8) penetrates into the pull hole (21), so that the pull rod (2) is lifted when the head of the swing hook (8) swings up, the water drainage valve (1) is opened to drain water, and the pull rod (2) is lowered when the head of the swing hook (8) swings down, so that the water drainage valve (1) is closed to stop draining water. An intermediate arc-shaped matching surface (22) is formed on the upper edge of the swing hook (8) at the position where the swing hook (8) is in contact with the pull hole (21), the swing hook (8) contacts and lifts the pull hole (21) through different positions on the arc-shaped matching surface (22) with the pivoting of the swing hook (8), so that the swing hook (8) only exerts a longitudinal force on the pull rod (2). The side edge of the swing hook (8) is protruded to form a limiting protrusion (23), the limiting protrusion (23) is used for abutting against the side wall of the pull rod (2) to limit the swing of the pull rod (2).

2. The pull drive of the hidden water tank according to claim 1, characterized in that: The first driving arm (9) is radially protruded on the sliding shaft sleeve (12).

3. The pull drive of claim 2 wherein: The inner wall of the sliding shaft sleeve (12) is protruded to form a limiting protrusion (13), and the outer wall of the rotating shaft body (11) is concave to form a limiting recess (14), the limiting recess (14) is used for the limiting protrusion (13) to sink into, so as to limit the axial sliding of the sliding shaft sleeve (12) on the rotating shaft body (11).

4. The puller drive of the hidden water tank according to claim 1, wherein: The second driving arm (10) is transversely pivoted with a connecting nut (15) at the end, the connecting nut (15) is used for screwing a connecting rod (16), and the connecting rod (16) is used for connecting the water drainage button (3).

5. The puller drive of claim 1 wherein: The elastic air bag (4) comprises an air bag body (17) and an air bag cover (18), and is communicated with a gas source device (19), the air bag body (17) is detachably installed and fixed on the fixed frame (5), the gas source device (19) drives the air bag cover (18) to stretch and contract on the air bag body (17) by air pressure, and the first driving arm (9) is abutted by the air bag cover (18).

6. The pull drive of claim 5 wherein: The inner wall of the water tank (7) is fixed with a mounting plate (20), the air source device (19) is fixed on the mounting plate (20) and is communicated with the stretchable air bag (4) through a gas conveying hose, and the fixing frame (5) is detachably mounted on the mounting plate (20).

7. The puller drive of claim 1 wherein: The head end of the swing hook (8) is upwardly protruded to form an anti-unhooking hook (24) for limiting the swing hook (8) from being unhooked out of the lifting hole (21).

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