Lifting device of intelligent cover plate, intelligent closestool and control method

Abstract

The invention discloses a lifting device of an intelligent cover plate, an intelligent closestool and a control method, the intelligent cover plate comprises a base fixed on a closestool body, the lifting device comprises a fixing part, a lifting mechanism and a limiting rod, and the rear end of the base is movably connected with the rear end of the closestool body; the fixing part is arranged in the closestool body and limits the front end of the base to be lifted upwards; the lifting mechanism is arranged between the closestool body and the base, can lift the front end of the base upwards to be separated from the closestool body, and comprises a first lifting part arranged in the base, a second lifting part arranged in the closestool body and matched with the first lifting part, and a driving part for driving the first lifting part to act; the limiting rod is rotatably arranged in the base and can rotate until the first end of the limiting rod abuts against the lower end of the fixing part, so that the base is locked and fixed to the closestool body; the structure of the lifting device is specifically limited, locking, fixing, lifting and resetting of the intelligent cover plate are achieved through cooperation of the lifting mechanism and the limiting rod, and a user can conveniently clean dirt accumulated between the base and the closestool body.

Description

Technical Field

[0001] This invention belongs to the field of bathroom technology, specifically relating to a smart toilet seat lifting device, a smart toilet, and a control method. Background Technology

[0002] Existing ceramic flushing smart toilets consist of a toilet body and a smart seat. The smart seat includes a top cover, a seat ring, a body assembly, and a base. The body assembly has various functional units, such as a flushing nozzle and a drying unit. The top cover and seat ring are pivotally connected to the body assembly, which is mounted on the base, which is then fixedly mounted on the toilet body. During use, dirt easily accumulates in the gap between the front of the smart seat and the toilet body. The base's fixed installation means that the smart seat must be removed before cleaning, making the process cumbersome and inconvenient for users. Further improvements are needed. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lifting device for an intelligent toilet seat, an intelligent toilet, and a control method.

[0004] The present invention adopts the following technical solution:

[0005] A lifting device for a smart toilet seat, the smart toilet seat including a base fixed to the toilet body, including a fixing part, a lifting mechanism and a limiting rod, the rear end of the base being movably connected to the rear end of the toilet body;

[0006] A fixing part, located in the toilet body, restricts the front end of the base from rising upwards;

[0007] A lifting mechanism is provided between the toilet body and the base, which can lift the front end of the base upward and separate it from the toilet body. It includes a first lifting part provided in the base, a second lifting part provided in the toilet body and cooperating with the first lifting part, and a drive part that drives the first lifting part to move.

[0008] A limiting rod is rotatably disposed in the base, with its first end extending downward to the outside of the base. The limiting rod can be rotated until its first end abuts against the lower end of the fixing part, so that the base is locked and fixed to the toilet body. When the front end of the base is lifted upward, the limiting rod rotates in the opposite direction to disengage its first end from the fixing part. The driving part drives the first lifting part to move, and works in conjunction with the second lifting part to lift the front end of the base upward.

[0009] Furthermore, the second lifting part includes an inclined surface opposite to the first lifting part and a fixed toothed segment disposed on the inclined surface. The first lifting part is rotatably disposed on the base, and a movable toothed segment that meshes with the fixed toothed segment is disposed thereon. The driving part drives the first lifting part to rotate so that the movable toothed segment meshes with the fixed toothed segment, thereby driving the first lifting part to move upward along the inclined surface so that the front end of the base is raised.

[0010] Furthermore, the first lifting unit also includes a rotating block rotatably disposed in the base, the movable toothed segment is disposed on the outer surface of the rotating block, and the driving unit is connected to and drives the rotating block to rotate.

[0011] Furthermore, the rotating block is arranged in a fan shape, and the movable toothed segment is arranged in an arc shape on the outer side of the rotating block.

[0012] Furthermore, the second end of the limiting rod abuts against the outer side of the rotating block, and the second end of the limiting rod is provided with a reset member connected to the base. When the rotating block rotates to engage the movable toothed segment with the fixed toothed segment, the reset member resets and drives the second end of the limiting rod to rotate along the direction close to the second lifting part, so that its first end rotates in the opposite direction and disengages from the toilet body.

[0013] Furthermore, the lifting mechanism also includes a limiting component, which includes a limiting block that moves relative to the rotating block on the base and a limiting spring connected between the limiting block and the base. The outer side of the rotating block is provided with a limiting surface that abuts against the lower end of the limiting block, and the movable toothed segment is located on one side of the limiting surface.

[0014] Furthermore, a limiting groove is provided on the limiting surface for the lower end of the limiting block to be embedded in, and the inner wall of the limiting groove is inclined with a guide surface to guide the limiting block to disengage from the limiting groove; after the front end of the base is raised to the position, the limiting block is embedded in the limiting groove; when the front end of the base rotates downward to reset, the lower end of the limiting block disengages from the limiting groove under the action of the guide surface, so that the rotating block can continue to rotate in the opposite direction to drive the front end of the base to reset.

[0015] Furthermore, the toilet body is provided with a fixing bracket for fixing the second lifting part, and the fixing part is disposed in the fixing bracket; the second lifting part is fixed on the fixing part.

[0016] A smart toilet includes a toilet body and a smart seat mounted on the toilet body. The smart seat also includes a body control component mounted on a base and a seat ring and a top cover mounted on the body control component that can be lifted. It also includes a lifting device as described in any one of the above eight claims. The lifting device is connected to the body control component and is capable of lifting the front end of the base upward so that the front end of the smart seat is detached from the toilet body.

[0017] A control method for raising and lowering an intelligent toilet seat, based on the aforementioned intelligent toilet, is as follows:

[0018] When the front end of the base is lifted upward, the drive unit controls the first lifting unit to work. The first lifting unit works to drive the limit rod to rotate so that its first end is disengaged from the fixed part, releasing the fixed part from the base. The first lifting unit continues to work and cooperates with the second lifting unit, thereby driving the front end of the base to be lifted upward into place.

[0019] When the front end of the base rotates downward to reset, the first lifting part is controlled to work. The first lifting part first cooperates with the second lifting part to make the front end of the base rotate downward to reset. At the same time, the first end of the limit rod rotates under the action of the first lifting part to abut against the fixed part, so that the front end of the base rotates downward to reset and is locked and fixed on the toilet body.

[0020] As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are as follows: The present application specifically defines the structure of the lifting device, which achieves the locking, lifting and resetting of the smart seat through the cooperation of the lifting mechanism and the limiting rod, making it convenient for users to clean the dirt accumulated between the base and the toilet body; wherein, the structure of the lifting mechanism is further defined, with the movable toothed segment on the first lifting part cooperating with the fixed toothed segment on the second lifting part to drive the first lifting part to move upward along the inclined surface of the second lifting part, so that the front end of the base is lifted upward; and after the front end of the base is rotated downward to reset, the limiting rod, under the action of the first lifting part, will cause its first end to rotate to abut against the lower end of the fixed part in the toilet body, locking and fixing the base to ensure that it will not detach upward from the toilet body; the overall structure is simple and facilitates the disassembly and lifting of the smart seat for cleaning. Attached Figure Description

[0021] Figure 1 This is a structural diagram of a smart toilet;

[0022] Figure 2 A schematic diagram of the structure for the intelligent cover plate lifting;

[0023] Figure 3 A schematic diagram showing the connection between the toilet body and the fixed bracket and positioning bracket;

[0024] Figure 4 A schematic diagram showing the connection between the toilet body and the base;

[0025] Figure 5 This is a schematic diagram of the lifting device.

[0026] Figure 6 This is an exploded view of the lifting device.

[0027] Figure 7 This is a schematic diagram showing the base and toilet body locked and fixed in place.

[0028] Figure 8 A schematic diagram illustrating the process of the base being lifted upwards;

[0029] Figure 9 A sectional view of the structure where the base has been raised to its final position;

[0030] Figure 10 This is a diagram showing the base raised to its final position.

[0031] Figure 11 A schematic diagram of the control logic for raising the intelligent cover plate;

[0032] In the diagram: 1. Toilet body; 2. Smart toilet seat; 3. Lifting device; 4. Positioning bracket; 5. Fixed bracket; 11. Mounting slot; 21. Base; 22. Body control component; 23. Positioning slot; 24. Limiting step; 31. Lifting box; 311. Guide slot; 32. Lifting mechanism; 33. Limiting rod; 331. Reset component; 34. First lifting part; 341. Rotating block; 342. Movable toothed section; 343. Limiting surface; 344, limiting groove; 345, guide surface; 35, second lifting part; 351, lifting tooth block; 352, inclined surface; 353, fixed toothed section; 36, driving part; 37, limiting assembly; 371, limiting block; 372, limiting spring; 41, elastic buckle; 42, limiting protrusion; 43, connecting hole; 44, support part; 51, fixing part; 52, connecting section; 53, extension section; 54, locking element. Detailed Implementation

[0033] The present invention will be further described below through specific embodiments.

[0034] Reference Figures 1 to 2 As shown, a smart toilet includes a toilet body 1, a smart seat 2 installed on the toilet body 1, and a lifting device 3.

[0035] The smart toilet seat 2 includes a base 21 mounted on the toilet body 1, a body control component 22 mounted on the base 21, and a seat ring and cover that can be raised and mounted on the body control component 22. The body control component 22 is equipped with various functional units, such as a flushing nozzle and a drying unit. Specifically, the rear end of the base 21 is movably connected to the rear end of the toilet body 1, so that the front end of the base 21 can be raised relative to the toilet body 1 to form a certain angle, which facilitates the user to flush away the dirt accumulated between the base 21 and the toilet body 1. Furthermore, the smart toilet seat 2 is a mature existing technology in the field of smart toilet technology, and its specific structure and working principle will not be described in detail here.

[0036] Reference Figures 3 to 4As shown, the toilet body 1 is provided with two opposing positioning brackets 4, which are movably connected to the rear end of the base 21. The toilet body 1 has mounting grooves 11 for installing the positioning brackets 4. Specifically, each positioning bracket 4 has an elastic buckle 41 opposite to the rear end of the base 21. The base 21 has a positioning groove 23 for the elastic buckle 41 to be inserted into, and the elastic buckle 41 has two opposing limiting protrusions 42. The inner wall of the positioning groove 23 has a limiting step 24 that cooperates with the limiting protrusions 42. The cooperation between the limiting protrusions 42 and the limiting step 24 prevents the elastic buckle 41 from disengaging from the positioning groove 23 during use, thus achieving a movable connection between the rear end of the base 21 and the rear end of the toilet body 1, allowing the front end of the base 21 to be stably lifted upwards. Furthermore, the positioning bracket 4 also has one or more connecting holes 43 for connecting to the toilet body 1. During installation, the bolt assembly is connected to the toilet body 1 through the connecting holes 43 to install the positioning bracket 4.

[0037] Reference Figures 5 to 10 As shown, the lifting device 3 includes a lifting box 31, a lifting mechanism 32, and a limiting rod 33. Specifically, the lifting box 31 is disposed in the base 21; the lifting mechanism 32 is disposed between the toilet body 1 and the lifting box 31, and can lift the front end of the base 21 upward and detach it from the toilet body 1; the limiting rod 33 is rotatably disposed in the lifting box 31, and its first end extends downward to the outside of the lifting box 31; wherein, the toilet body 1 has a fixing part 51 for fixing the first end of the limiting rod 33, and the first end of the limiting rod 33 can rotate to abut against the lower end of the fixing part 51, so that the base 31 is fixed on the toilet body 1 and will not detach upward from the toilet body 1; when the front end of the base 21 is lifted upward, the limiting rod 33 rotates in the opposite direction to disengage its first end from the fixing part 51, and the lifting mechanism 32 then works to drive the front end of the base 21 to lift upward.

[0038] In this application, to secure the base 21, a fixing bracket 5 is provided in the toilet body 1, and the fixing part 51 is mounted on the fixing bracket 5. Specifically, refer to... Figure 3 As shown, the fixing bracket 5 includes two connecting sections 52 disposed opposite to each other on the toilet body 1 and two extending sections 53 respectively connected to the two connecting sections 52 and extending downward. The fixing part 51 is disposed between the two extending sections 53. The two connecting sections 52 are respectively opposite to the positioning bracket 4, and the positioning bracket 4 is provided with a support part 44 for supporting the connecting sections 52. The connecting sections 52 are supported on the opposite support parts 44 and are detachably connected to the toilet body 1 via a locking member 54. Further, in this application, the fixing bracket 5 and the toilet body 1 are detachably connected via the locking member 54. The locking member 54 can be an expansion bolt or other structure that can achieve a locking effect. In other embodiments, the fixing bracket 5 can also be integrally formed with the toilet body 1, or the fixing part 51 can be integrally formed with the toilet body 1.

[0039] The lifting mechanism 32 includes a first lifting part 34 rotatably disposed in the lifting box 31, a second lifting part 35 disposed on the fixed part 51 and cooperating with the first lifting part 34, a driving part 36 driving the first lifting part 34 to rotate, and a limiting component 37 limiting the position of the first lifting part 34. Through the cooperation of the first lifting part 34 and the second lifting part 35, the front end of the base 21 can be lifted upward or rotated downward to reset. Specifically, the second lifting part 35 includes a lifting tooth block 351 located in the lifting box 21, an inclined surface 352 disposed on the lifting tooth block 351 opposite to the first lifting part 34, and a fixed toothed section 353 disposed on the inclined surface 352; the first lifting part 34 is provided with a movable toothed section 342 that meshes with the fixed toothed section 353; the driving part 36 drives the first lifting part 34 to rotate so that the movable toothed section 342 meshes with the fixed toothed section 353, thereby driving the first lifting part 34 to move upward along the inclined surface 352, thus lifting the front end of the base 21. Furthermore, the drive unit 36 ​​is connected to the main body control assembly 22 and includes a drive motor.

[0040] The first lifting part 34 includes a rotating block 341 rotatably disposed in the lifting box 31, and a driving part 36 connected to and driving the rotating block 341 to rotate. Specifically, the rotating block 341 is fan-shaped, and the movable toothed segment 342 is arc-shaped on the outer arc surface of the rotating block 341. During assembly, the second end of the limiting rod 33 abuts against the outer surface of the rotating block 341 and moves with the rotating block 341. The second end of the limiting rod 33 is provided with a reset member 331 connected to the lifting box 31. The reset member 331 can be a spring or a torsion spring. When the rotating block 341 rotates, causing the movable toothed segment 342 to engage with the fixed toothed segment 353, the reset member 331 resets and drives the second end of the limiting rod 33 to rotate with the rotating block 341 in a direction close to the second lifting part 35, so that the first end of the limiting rod 33 rotates in a direction away from the fixed part 51. When the fixed part 51 is disengaged, the lifting mechanism 32 can lift the front end of the base 21 upward. When the front end of the base 21 is rotated downward to reset, the rotating block 341 rotates in the opposite direction to gradually disengage the movable toothed section 342 from the fixed toothed section 353. During the reverse rotation of the rotating block 341, the second end of the limiting rod 33 moves together to squeeze the reset member 331, so that the first end of the limiting rod 33 rotates in the direction close to the fixed part 51 until it abuts against the lower end of the fixed part 51, thus fixing the base 21 and preventing it from detaching upward from the toilet body 1.

[0041] The limiting assembly 37 includes a limiting block 371 that moves relative to the rotating block 341 on the lifting box 31, and a limiting spring 372 connecting the limiting block 371 and the lifting box 31. The lifting box 31 has a guide groove 311 for mounting the limiting spring 372, which is located in the guide groove 311 and connected to the limiting block 371. Specifically, the rotating block 341 has a limiting surface 343 on its outer side that abuts against the lower end of the limiting block 371, and the movable toothed section 342 has two segments, which are arranged opposite each other on both sides of the limiting surface 343. Furthermore, the limiting surface 343 is provided with a limiting groove 344 for the lower end of the limiting block 371 to be embedded in, and the inner wall of the limiting groove 344 is inclined with a guide surface 345 to guide the limiting block 371 to disengage from the limiting groove 344; after the front end of the base 21 is raised to the position, the limiting block 371 is embedded in the limiting groove 344 to limit the position of the rotating block 341, ensuring that the base 21 will not rotate downward to reset when used for cleaning; when the front end of the base 21 rotates downward to reset, the lower end of the limiting block 371 gradually disengages from the limiting groove 344 under the action of the guide surface 345, so that the rotating block 341 can continue to rotate in the opposite direction to drive the front end of the base 21 to reset.

[0042] Reference Figure 11 As shown, the control method for raising and lowering the smart cover 2 based on the above structure is as follows:

[0043] When cleaning mode is activated, the operation is as follows:

[0044] S1. When the user starts the cleaning mode, the main control component 22 controls the seat ring and the top cover to lift. When the top cover and the seat ring cannot be lifted or are lifted into place, it is determined that the automatic flipping and lifting function of the smart cover 2 is abnormal. The main control component 22 will issue a prompt sound and stop running. When the seat ring and the top cover are lifted into place in sequence, it is determined that the automatic flipping and lifting function of the smart cover 2 is normal.

[0045] S2. After determining that the automatic flipping and turning function of the smart cover 2 is normal, the main body control component 22 controls the lifting device 3 to start running. When the front end of the base 21 cannot be lifted or is lifted to the correct position, it is determined that the lifting device 3 is malfunctioning. The main body control component 22 issues a prompt sound and stops running. After the front end of the base 21 is lifted to the correct position, it is determined that the lifting device 3 is functioning normally. During the lifting process of the front end of the base 21, the main body control component 22 first controls the rotating block 341 to rotate. After the rotating block 341 starts to rotate, the limit rod 33 can rotate to disengage its first end from the fixed part 51. The rotating block 341 continues to rotate to make the movable toothed section 342 mesh with the fixed toothed section 353, thereby driving the front end of the base 21 to be lifted upward to the correct position.

[0046] When the cleaning mode ends, proceed as follows:

[0047] S3. When the user outputs the end of the cleaning mode, the main control component 22 controls the lifting device 3 to start running. When the front end of the base 21 cannot rotate downward or rotate to the correct position, it is determined that the lifting device 3 is malfunctioning. The main control component 22 emits a prompt sound and stops running. When the front end of the base 21 rotates downward to the correct position, it is determined that the lifting device 3 of the smart toilet seat 2 is functioning normally. When the front end of the base 21 rotates downward, the control of the rotating block 341 to rotate in the opposite direction is used. The movable toothed section 342 engages with the fixed toothed section 353 and gradually disengages, so that the front end of the base 21 rotates downward to reset. At the same time, the first end of the limit rod 33 rotates under the action of the rotating block 341 to abut against the fixed part 51, so that the front end of the base 21 rotates downward to reset and is locked and fixed on the toilet body 1.

[0048] S4. After determining that the lifting device 3 of the smart cover 2 is functioning normally, the main body control component 22 controls the seat ring and the top cover to flip downwards. When the seat ring and the top cover cannot flip downwards or flip to the correct position, it is determined that the automatic flipping and turning function of the smart cover 2 is abnormal. When both the seat ring and the top cover are flipped downwards to the correct position, it is determined that the automatic flipping and turning function of the smart cover 2 is normal and the cleaning mode ends.

[0049] This application specifically defines the structure of the lifting device 3, in which the cooperation of the lifting mechanism 32 and the limiting rod 33 realizes the locking, lifting, and resetting of the smart seat 2, making it convenient for users to clean the dirt accumulated between the base 21 and the toilet body 1. Further defining the structure of the lifting mechanism 32, the movable toothed section 342 on the first lifting part 34 cooperates with the fixed toothed section 353 on the second lifting part 35 to drive the first lifting part 34 to move upward along the inclined surface 352 of the second lifting part 35, causing the front end of the base 21 to lift upward. After the front end of the base 21 rotates downward to reset, the limiting rod 33, under the action of the first lifting part 34, will rotate its first end to abut against the lower end of the fixed part 51 in the toilet body 1, locking and fixing the base 21 to ensure it does not detach upward from the toilet body 1. The overall structure is simple, facilitating the disassembly and lifting of the smart seat 2 for cleaning.

[0050] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A lifting device for a smart toilet seat, the smart toilet seat comprising a base fixed to the toilet body, characterized in that: It includes a fixing part, a lifting mechanism and a limiting rod, and the rear end of the base is movably connected to the rear end of the toilet body; A fixing part, located in the toilet body, restricts the front end of the base from rising upwards; A lifting mechanism is provided between the toilet body and the base, which can lift the front end of the base upward and separate it from the toilet body. It includes a first lifting part provided in the base, a second lifting part provided in the toilet body and cooperating with the first lifting part, and a drive part that drives the first lifting part to move. A limiting rod is rotatably disposed in the base, with its first end extending downward to the outside of the base. The limiting rod can be rotated until its first end abuts against the lower end of the fixing part, so that the base is locked and fixed to the toilet body. When the front end of the base is lifted upward, the limiting rod rotates in the opposite direction to disengage its first end from the fixing part. The driving part drives the first lifting part to move, and works in conjunction with the second lifting part to lift the front end of the base upward.

2. The lifting device for an intelligent cover plate according to claim 1, characterized in that: The second lifting part includes an inclined surface opposite to the first lifting part and a fixed toothed segment disposed on the inclined surface. The first lifting part is rotatably disposed on the base and has a movable toothed segment that meshes with the fixed toothed segment. The driving part drives the first lifting part to rotate so that the movable toothed segment meshes with the fixed toothed segment, thereby driving the first lifting part to move upward along the inclined surface and raising the front end of the base.

3. The lifting device for an intelligent cover plate according to claim 2, characterized in that: The first lifting unit also includes a rotating block rotatably disposed in the base, the movable toothed segment is disposed on the outer surface of the rotating block, and the driving unit is connected to and drives the rotating block to rotate.

4. The lifting device for an intelligent cover plate according to claim 3, characterized in that: The rotating block is arranged in a fan shape, and the movable toothed segment is arranged in an arc shape on the outer side of the rotating block.

5. The lifting device for an intelligent cover plate according to claim 3, characterized in that: The second end of the limiting rod abuts against the outer side of the rotating block. The second end of the limiting rod is provided with a reset member connected to the base. When the rotating block rotates to engage the movable toothed section with the fixed toothed section, the reset member resets and drives the second end of the limiting rod to rotate along the direction close to the second lifting part, so that its first end rotates in the opposite direction and disengages from the toilet body.

6. The lifting device for an intelligent cover plate according to claim 3, characterized in that: The lifting mechanism also includes a limiting component, which includes a limiting block that moves relative to the rotating block on the base and a limiting spring connected between the limiting block and the base. The outer side of the rotating block is provided with a limiting surface that abuts against the lower end of the limiting block, and the movable toothed segment is located on one side of the limiting surface.

7. The lifting device for an intelligent cover plate according to claim 6, characterized in that: The limiting surface is provided with a limiting groove for the lower end of the limiting block to be embedded. The inner wall of the limiting groove is provided with a guide surface to guide the limiting block to disengage from the limiting groove. After the front end of the base is raised to the position, the limiting block is embedded in the limiting groove. When the front end of the base rotates downward to reset, the lower end of the limiting block disengages from the limiting groove under the action of the guide surface, so that the rotating block can continue to rotate in the opposite direction to drive the front end of the base to reset.

8. The lifting device for an intelligent cover plate according to claim 1, characterized in that: The toilet body is provided with a fixing bracket for fixing the second lifting part, and the fixing part is disposed in the fixing bracket; the second lifting part is fixed on the fixing part.

9. A smart toilet, comprising a toilet body and a smart seat mounted on the toilet body, the smart seat further comprising a body control component mounted on a base and a seat ring and a lid that are liftable and mounted on the body control component, characterized in that: It also includes a lifting device as described in any one of claims 1 to 8, the lifting device being connected to the body control component, the lifting device being capable of lifting the front end of the base upward so that the front end of the smart seat is detached from the toilet body.

10. A control method for raising and lowering an intelligent cover plate, characterized in that: Based on the smart toilet described in claim 9, the specific method is as follows: When the front end of the base is lifted upward, the drive unit controls the first lifting unit to work. The first lifting unit works to drive the limit rod to rotate so that its first end is disengaged from the fixed part, releasing the fixed part from the base. The first lifting unit continues to work and cooperates with the second lifting unit, thereby driving the front end of the base to be lifted upward into place. When the front end of the base rotates downward to reset, the first lifting part is controlled to work. The first lifting part first cooperates with the second lifting part to make the front end of the base rotate downward to reset. At the same time, the first end of the limit rod rotates under the action of the first lifting part to abut against the fixed part, so that the front end of the base rotates downward to reset and is locked and fixed on the toilet body.

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