Anti-overflow device for counter basin

Abstract

The utility model provides a counter basin anti-overflow device which comprises an outer shell, a connecting pipe and an overflow pipe, the connecting pipe and the overflow pipe are arranged in the outer shell, the lower end of the outer shell is provided with a water outlet, the side wall of the outer shell is provided with a water inlet communicated with a water outlet of a counter basin, and the lower end of the connecting pipe is provided with a water retaining sealing ring. The water retaining sealing ring is arranged to be capable of opening and closing the water outlet along with the up-down movement of the connecting pipe and the overflow pipe; an overflow port is formed in the side wall of the overflow pipe, the lower end of the overflow pipe is connected with the connecting pipe, and the overflow pipe can rotate around the connecting pipe and move in the axial direction of the connecting pipe, so that the horizontal height of the overflow port in the overflow pipe is adjusted; the anti-overflow device is reasonable in structural design, attractive in appearance and small in disassembly and assembly difficulty, and the interior of the anti-overflow device can be conveniently cleaned; and meanwhile, the horizontal height of the overflow port on the overflow pipe in the anti-overflow device can be adjusted according to the actual condition of the counter basin, so that the practicability can be improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a basin anti-overflow device. Background Art

[0002] Basins are facilities that are often used in people's lives. In order to prevent the water in the basin from overflowing outside the basin and wetting the ground, an overflow hole is generally opened on the side wall of the basin, and then the excess water is discharged into the drain pipe through the overflow pipe. However, the overflow hole and overflow pipe under this structure are usually arranged on the back, that is, the overflow pipe is arranged in the narrow space between the basin and the wall, which is not beautiful, and is not easy to disassemble and clean. Bacteria are easy to breed in the overflow pipe; furthermore, for basins of different heights, they have overflow holes of different heights, so it is necessary to prepare overflow pipes of different lengths for use with the basins, which leads to troublesome production and high production costs; therefore, the existing technology needs to be improved and developed. Summary of the invention

[0003] In view of the shortcomings existing in the above problems, the utility model provides a basin overflow prevention device.

[0004] To achieve the above-mentioned purpose, the utility model provides a basin overflow prevention device, including an outer shell, a connecting pipe and an overflow pipe arranged in the outer shell, the lower end of the outer shell is provided with a water outlet, the side wall is provided with a water inlet for connecting with the basin drain outlet, the lower end of the connecting pipe is provided with a water retaining sealing ring, the water retaining sealing ring is arranged to be able to open and close the water outlet as the connecting pipe and the overflow pipe move up and down; the overflow pipe is provided with an overflow port on the side wall, and the lower end is connected to the connecting pipe, and the overflow pipe is arranged to be able to rotate around the connecting pipe and move along the axial direction of the connecting pipe, thereby adjusting the horizontal height of the overflow port on the overflow pipe.

[0005] Furthermore, an installation port is provided at the upper end of the outer shell, and a push-and-pop assembly is provided inside. The push-and-pop assembly includes a pressing part and a pop-up part. The pressing part is provided at the upper end of the overflow pipe, and the pop-up part is clamped on the inner wall of the water outlet, and its movable end is connected to the connecting pipe. The pressing part and the pop-up part cooperate to drive the connecting pipe and the overflow pipe to move up and down at the same time.

[0006] Furthermore, the pressing member includes a pressing head and a screw portion, the pressing head at least partially extends out of the mounting port, the screw portion is threadedly connected to the overflow pipe, and a locking nut is threadedly connected to the screw portion for fixing the relative position between the pressing member and the overflow pipe.

[0007] Furthermore, a first annular mounting groove is provided on the side wall of the pressing head, and a supporting ring is sleeved on the first annular mounting groove.

[0008] Furthermore, the bouncing part includes a bouncing part and a connecting part, one end of the bouncing part is against the lower end of the connecting pipe, and the other end is inserted into the connecting part, a limiting protrusion is provided on the inner wall surface of the water outlet, a limiting groove is provided on the outer wall surface of the connecting part corresponding to the limiting protrusion, and a through hole communicating with the water outlet is provided inside.

[0009] Furthermore, a second annular mounting groove is provided on the outer wall surface of the connecting portion, and a first sealing ring is provided on the second annular mounting groove.

[0010] Furthermore, a third annular mounting groove is provided on the side wall surface of the lower end of the connecting pipe, the water retaining sealing ring is sleeved on the third annular mounting groove, and the outer shell body is provided with an annular recess corresponding to the water retaining sealing ring, and the annular recess is arranged below the water inlet.

[0011] Furthermore, an external thread section is provided on the outer wall surface of the connecting pipe, and an internal thread section is correspondingly provided on the inner wall surface of the overflow pipe. The connecting pipe and the overflow pipe are threadedly connected, and a tightening ring is threadedly connected on the connecting pipe for fixing the relative position between the connecting pipe and the overflow pipe.

[0012] Furthermore, the outer shell passes through the countertop of the basin, and the outer shell is fixed on the countertop of the basin by threaded connection with the first fixing member.

[0013] Furthermore, the outer shell is divided into an upper shell and a lower shell, the upper shell and the lower shell are threadedly connected, and a second sealing ring is provided between the two, the lower shell passes through the table top of the basin, and is fixed on the table top of the basin by a threaded connection with a second fixing piece.

[0014] Furthermore, a lower mounting seat is provided in the water outlet at the lower end of the outer shell, a guide member is fixedly connected to the lower mounting seat, a guide cavity is provided in the guide member, a guide rod is provided at the lower end of the connecting pipe corresponding to the guide cavity, an upper mounting seat is provided at the opening at the upper end of the outer shell, a driving assembly is provided on the upper mounting seat, the driving assembly includes a driving member, a transmission member, and a connecting member, one end of the connecting member is connected to the overflow pipe, and the other end is connected to the transmission member; the driving member and the transmission member cooperate to control the guide rod to slide up and down in the guide cavity, and at the same time drive the connecting member, the overflow pipe, and the connecting pipe to move up and down.

[0015] Furthermore, a base is provided at the lower end of the connecting pipe, a fourth annular mounting groove is provided on the outer wall of the base, a water hole 1 is provided on the lower wall, and a water hole 2 is provided on the lower mounting seat.

[0016] Furthermore, a vertical limiting groove is provided on the side wall of the guide member, and a limiting protrusion used in conjunction with the limiting groove is provided on the guide rod.

[0017] Furthermore, a fixed cover is fixedly provided on the upper end of the upper mounting seat, and a notch is provided on the upper end of the fixed cover. The driving member is a swinging member, one end of the swinging member is hinged to the inner wall of the fixed cover, and the other end extends to the outside of the fixed cover through the notch. The transmission member is an S-shaped hook, one end of the S-shaped hook is rotatably connected to the lower wall surface of the middle section of the swinging member, and the other end is rotatably connected to the upper end of the connecting member. The connecting member is a straight rod member, and the lower section of the straight rod member is threadedly connected to the overflow pipe, and the two are fixed by a first fixing nut.

[0018] Furthermore, a limiting portion is vertically provided in the upper mounting seat, and the upper section of the straight rod is movably arranged in the limiting portion, and the axes of the limiting portion, the straight rod, the overflow pipe, the connecting pipe, the guide rod, and the guide cavity are parallel.

[0019] Furthermore, the driving member is a rotating cover, the transmission member is a rotating shaft, and it is divided into three sections: upper, middle and lower; the connecting member is divided into an upper threaded barrel and a lower threaded rod; the upper section of the rotating shaft is fixedly connected to the rotating cover by a pin, the middle section is clearance-matched with the upper mounting seat, the upper wall surface of the lower section of the rotating shaft abuts against the lower wall surface of the upper mounting seat, the outer wall surface is threadedly connected to the inner wall surface of the upper threaded barrel, the lower threaded rod portion is threadedly connected to the overflow pipe, and the two are fixed by a second locking nut.

[0020] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a reasonable structural design, beautiful appearance, low difficulty in disassembly and assembly, and convenient cleaning of the inside of the anti-overflow device; at the same time, the overflow port on the overflow pipe in the anti-overflow device can adjust its horizontal height according to the actual situation of the basin, which can improve practicality and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the first embodiment of the utility model after being assembled with a basin;

[0022] Figure 2 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0023] Figure 3 This is an exploded schematic diagram of the first embodiment of the utility model;

[0024] Figure 4 This is a fluid flow diagram of the first embodiment of the utility model in the first state;

[0025] Figure 5 This is a fluid flow diagram of the first embodiment of the utility model in the second state;

[0026] Figure 6 This is a schematic diagram of the second embodiment of the utility model after being assembled with a basin;

[0027] Figure 7 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0028] Figure 8 This is an exploded schematic diagram of the second embodiment of the present utility model;

[0029] Fig. 9 This is a partial structural diagram of Embodiment 3 of the present utility model;

[0030] Fig.10 It is a partial structural diagram of the fourth embodiment of the present utility model. DETAILED DESCRIPTION

[0031] Embodiment 1: Figure 1~Figure 3 As shown, a basin overflow prevention device according to an embodiment of the utility model comprises a basin 2 and an overflow prevention device 5. The basin 2 is arranged below the countertop 1 and is provided with a drain 2-1 at the lower end. A water stopper 3 is installed in the drain 2-1. The overflow prevention device 5 comprises an outer shell 6. The upper end of the outer shell 6 passes through the countertop 1 of the basin 2 and is fixed to the countertop 1 of the basin 2 by a first threaded connection fixing member 17. At the same time, a water outlet 61 is provided at the lower end of the outer shell 6 and a water inlet 62 is provided on the side wall. The water inlet 62 and the drain 2-1 are connected via a drain pipe 4.

[0032] Furthermore, if Figure 2~Figure 4 As shown, the anti-overflow device 5 in this embodiment also includes a connecting pipe 7 and an overflow pipe 8 arranged in the outer shell 6, a third annular mounting groove 72 is provided on the side wall surface of the lower end of the connecting pipe 7, and a water retaining seal ring 15 is sleeved on the third annular mounting groove 72. The outer shell 6 is provided with an annular recess 65 corresponding to the water retaining seal ring 15, and the annular recess 65 is arranged below the water inlet 62. The water retaining seal ring 15 can open and close the water outlet 61 as the connecting pipe 7 and the overflow pipe 8 move up and down. At the same time, an overflow port 81 is provided on the side wall of the overflow pipe 8, and the lower end is connected to the connecting pipe 7; In one state, the water-retaining sealing ring 15 and the annular recess 65 cooperate to close the water outlet 61. At this time, the liquid flowing into the outer shell 6 cannot be directly discharged from the water outlet 61. The liquid gradually rises until it fills the overflow port 81. The liquid will flow from the overflow port 81 through the connecting pipe 7 to the water outlet 61 and be discharged; in the second state, the water-retaining sealing ring 15 moves up with the connecting pipe 7 and the overflow pipe 8 to open the water outlet 61. At this time, the water outlet 61 and the water inlet 62 on the outer shell 6 are connected, and the liquid flowing into the outer shell 6 can be directly discharged from the water outlet 61.

[0033] Furthermore, if Figure 2As shown, the overflow pipe 8 in this embodiment is configured to be able to rotate around the connecting pipe 7 and move along the axial direction of the connecting pipe 7; preferably, an external threaded section 71 is provided on the outer wall surface of the connecting pipe 7, and an internal threaded section 82 is correspondingly provided on the inner wall surface of the overflow pipe 8, the connecting pipe 7 and the overflow pipe 8 are threadedly connected, and a tightening ring 14 is threadedly connected on the connecting pipe 7 for fixing the relative position between the connecting pipe 7 and the overflow pipe 8. In actual installation, the connecting pipe 7 or the overflow pipe 8 can be rotated according to the actual height of the basin 2 to adjust the horizontal height of the overflow port 81 on the overflow pipe 8.

[0034] Furthermore, if Figure 2~Figure 5 As shown, in this embodiment, the upper end of the outer shell 6 is provided with a mounting port 63, and a push-and-pop assembly is provided inside. The push-and-pop assembly includes a push member 9 and a pop-up member 10. The push member 9 is provided at the upper end of the overflow pipe 8, and the pop-up member 10 is clamped on the inner wall of the water outlet 61, and its movable end is connected to the connecting pipe 7. Under the cooperation of the push member 9 and the pop-up member 10, the connecting pipe 7 and the overflow pipe 8 can be driven to move up and down at the same time, thereby driving the water retaining seal ring 15 to move up and down to switch the first state ( Figure 4 and Figure 5 The solid line in the figure shows the second state ( Figure 4 and Figure 5 denoted by the dotted line in ).

[0035] Furthermore, if Figure 2 , Figure 3 As shown, the pressing member 9 in this embodiment includes a pressing head 91 and a screw portion 92, and the screw portion 92 is threadedly connected to the overflow pipe 8. The relative position between the screw portion 92 and the overflow pipe 8 can be adjusted according to actual conditions to ensure that the pressing head 91 at least partially extends out of the mounting opening 63. A fixing nut 11 is threadedly connected to the screw portion 92, and the fixing nut 11 is used to fix the relative position between the pressing member 9 and the overflow pipe 8; at the same time, a first annular mounting groove 911 is provided on the side wall of the pressing head 91, and a support ring 12 is sleeved on the first annular mounting groove 911. The support ring 12 cooperates with the inner wall of the outer shell 6 to ensure the stability of the pressing member 9 when pressing, and prevent the pressing member 9 from being offset due to uneven external force.

[0036] Furthermore, if Figure 2 , Figure 3As shown, the bouncing member 10 in this embodiment includes a bouncing portion 101 and a connecting portion 102, one end of the bouncing portion 101 is against the lower end of the connecting pipe 7, and the other end is inserted into the connecting portion 102, a limiting protrusion 64 is provided on the inner wall surface of the water outlet 61, a limiting groove 1021 is provided on the outer wall surface of the connecting portion 102 corresponding to the limiting protrusion 64, and a through hole 1022 communicating with the water outlet 61 is provided inside, and at the same time, a second annular mounting groove 1023 is provided on the outer wall surface of the connecting portion 102, and a first sealing ring 13 is provided on the second annular mounting groove 1023, and the first sealing ring 13 can improve the sealing between the connecting portion 102 and the inner wall of the water outlet 61.

[0037] Embodiment 2: Figure 6~Figure 8 As shown, the difference between this embodiment and the first embodiment is that the basin 2 in this embodiment is arranged above the countertop 1, and the outer shell 6 is divided into an upper shell 6-1 and a lower shell 6-2, the upper shell 6-1 and the lower shell 6-2 are threadedly connected, and a second sealing ring 16 is provided therebetween, the lower shell 6-2 passes through the countertop of the basin, and is fixed to the countertop 1 of the basin 2 by a threaded connection with a second fixing member 18.

[0038] Embodiment 3: Fig. 9 As shown, the difference between this embodiment and the first embodiment lies in that: the structure for driving the overflow pipe 8 and the connecting pipe 7 to move up and down at the same time in this embodiment is different. A lower mounting seat 19 is provided in the water outlet 61 at the lower end of the outer shell 6 in this embodiment. A guide member 20 is fixedly connected to the lower mounting seat 19 and a water through hole 191 is provided. A guide cavity 201 is provided in the guide member 20. A base 23 is provided at the lower end of the connecting pipe 7. A guide rod 21 is fixedly provided at the lower end of the connecting pipe 7 (i.e., the base 23) corresponding to the guide cavity 201. A vertical limiting groove 202 is provided on the side wall of the guide member 20. A limiting protrusion 24 is provided on the guide rod 21. The limiting protrusion 24 cooperates with the limiting groove 202 to limit the guide rod 21 to slide up and down in the guide cavity 201 only in the axial direction.

[0039] Furthermore, if Fig. 9As shown, the outer wall surface of the base 23 in this embodiment is provided with a fourth annular mounting groove 231, and the lower wall surface is provided with a water hole 232. The fourth annular mounting groove 231 is provided with a water retaining seal ring 15. An upper mounting seat 22 is provided at the opening of the upper end of the outer shell 6. A limiting portion 221 is vertically provided in the upper mounting seat 22. A driving component and a fixed cover 25 are also provided on the upper mounting seat 22. A notch is provided at the upper end of the fixed cover 25. The driving component includes a driving member, a transmission member, and a connecting member, wherein the driving member is a swinging member 26, one end of the swinging member 26 is hinged to the inner wall of the fixed cover 25, and the other end extends to the outside of the fixed cover 25 through the notch. The transmission member is an S-shaped hook 27, one end of the S-shaped hook 27 is rotatably connected to the lower wall surface of the middle section of the swinging member 26, and the connecting member is The straight rod 28, the upper section of the straight rod 28 is movably arranged in the limiting part 221 and is rotatably connected to the other end of the S-shaped hook 27, the lower section of the straight rod 28 is threadedly connected to the overflow pipe 8, and the two are fixed by the first fixing nut 29, the limiting part 221, the straight rod 28, the overflow pipe 8, the connecting pipe 7, the guide rod 21, and the axis of the guide cavity 201 are parallel; when in use, the driving member (swinging member 26) cooperates with the transmission member (S-shaped hook 27), and the swinging member 26 is swung up and down to make the guide rod 21 slide up and down in the guide cavity 201, and can simultaneously drive the connecting member (straight rod 28), the overflow pipe 8, and the connecting pipe 7 to move up and down at the same time, thereby driving the water retaining sealing ring 15 to move up and down to switch the first state and the second state.

[0040] Embodiment 4: Fig.10 As shown, the difference between this embodiment and the third embodiment is that: in this embodiment, the driving member is a rotating cover 30, the transmission member is a rotating shaft 31, and it is divided into three sections: upper, middle and lower. The connecting member is divided into an upper screw-connected barrel portion 321 and a lower screw-connected rod portion 322. The upper section of the rotating shaft 31 is fixedly connected to the rotating cover 30 through a pin, and the middle section is clearance-matched with the upper mounting seat 22. The upper wall surface of the lower section of the rotating shaft 31 abuts against the lower wall surface of the upper mounting seat 22, and the outer wall surface is threadedly connected to the inner wall surface of the upper screw-connected barrel portion 321. The lower screw-connected rod portion 322 is threadedly connected to the upper screw-connected barrel portion 321. 22 is threadedly connected with the overflow pipe 8, and the two are fixed by a second fixing nut 33; when in use, the driving member (rotating cover 30) cooperates with the transmission member (rotating shaft 31), the limiting protrusion 24 cooperates with the limiting groove 202, and the rotating cover 30 and the rotating shaft 31 are rotated synchronously, so that the upper threaded barrel 321 moves upward or downward under the pressure of the thread, and at the same time drives the overflow pipe 8 and the connecting pipe 7 to move up and down at the same time, and then drives the water retaining sealing ring 15 to move up and down to switch the first state and the second state.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A basin overflow prevention device, characterized in that: The utility model comprises an outer shell (6), a connecting pipe (7) and an overflow pipe (8) arranged in the outer shell (6); the outer shell (6) has a water outlet (61) at the lower end, and a water inlet (62) connected to the drain outlet of the basin is arranged on the side wall; the connecting pipe (7) has a water retaining seal ring (15) at the lower end, and the water retaining seal ring (15) is arranged to open and close the water outlet (61) as the connecting pipe (7) and the overflow pipe (8) move up and down; the overflow pipe (8) has an overflow port (81) on the side wall, and the lower end is connected to the connecting pipe (7); the overflow pipe (8) is arranged to rotate around the connecting pipe (7) and move along the axial direction of the connecting pipe (7), thereby adjusting the horizontal height of the overflow port (81) on the overflow pipe (8).

2. The basin overflow prevention device according to claim 1, characterized in that: The outer shell (6) is provided with a mounting opening (63) at the upper end and a push-and-pop assembly is provided inside. The push-and-pop assembly comprises a push piece (9) and a pop-up piece (10). The push piece (9) is provided at the upper end of the overflow pipe (8). The pop-up piece (10) is clamped on the inner wall of the water outlet (61) and its movable end is connected to the connecting pipe (7). The push piece (9) and the pop-up piece (10) cooperate to drive the connecting pipe (7) and the overflow pipe (8) to move up and down simultaneously.

3. The basin overflow prevention device according to claim 2, characterized in that: The pressing member (9) comprises a pressing head (91) and a screw portion (92); the pressing head (91) at least partially protrudes out of the mounting opening (63); the screw portion (92) is threadedly connected to the overflow pipe (8); a fixing nut (11) is threadedly connected to the screw portion (92) for fixing the relative position between the pressing member (9) and the overflow pipe (8).

4. The basin overflow prevention device according to claim 3, characterized in that: A first annular mounting groove (911) is provided on the side wall of the pressing head (91), and a support ring (12) is sleeved on the first annular mounting groove (911).

5. The basin overflow prevention device according to claim 2, characterized in that: The bouncing member (10) comprises a bouncing portion (101) and a connecting portion (102); one end of the bouncing portion (101) abuts against the lower end of the connecting pipe (7), and the other end is inserted into the connecting portion (102); a limiting protrusion (64) is provided on the inner wall surface of the water outlet (61); a limiting groove (1021) is provided on the outer wall surface of the connecting portion (102) corresponding to the limiting protrusion (64); and a through hole (1022) communicating with the water outlet (61) is provided inside.

6. The basin overflow prevention device according to claim 5, characterized in that: A second annular mounting groove (1023) is provided on the outer wall surface of the connecting portion (102), and a first sealing ring (13) is provided on the second annular mounting groove (1023).

7. The basin overflow prevention device according to claim 1, characterized in that: A third annular mounting groove (72) is provided on the side wall surface of the lower end of the connecting pipe (7), the water retaining seal ring (15) is sleeved on the third annular mounting groove (72), and the outer shell (6) is provided with an annular recess (65) corresponding to the water retaining seal ring (15), and the annular recess (65) is arranged below the water inlet (62).

8. The basin overflow prevention device according to claim 1, characterized in that: An external thread section (71) is provided on the outer wall surface of the connecting pipe (7), and an internal thread section (82) is correspondingly provided on the inner wall surface of the overflow pipe (8). The connecting pipe (7) and the overflow pipe (8) are threadedly connected, and a fixing ring (14) is threadedly connected to the connecting pipe (7) for fixing the relative position between the connecting pipe (7) and the overflow pipe (8).

9. The basin overflow prevention device according to any one of claims 1 to 8, characterized in that: The outer shell (6) passes through the countertop of the basin, and the outer shell (6) is fixed to the countertop of the basin by threaded connection with the first fixing member (17).

10. The basin overflow prevention device according to any one of claims 1 to 8, characterized in that: The outer shell (6) is divided into an upper shell (6-1) and a lower shell (6-2); the upper shell (6-1) and the lower shell (6-2) are threadedly connected, and a second sealing ring (16) is provided between the two; the lower shell (6-2) passes through the table top of the basin, and is fixed to the table top of the basin by a second fixing member (18) threadedly connected.

11. The basin overflow prevention device according to claim 1, characterized in that: A lower mounting seat (19) is provided in the water outlet (61) at the lower end of the outer shell (6), a guide member (20) is fixedly connected to the lower mounting seat (19), a guide cavity (201) is provided in the guide member (20), a guide rod (21) is provided at the lower end of the connecting pipe (7) corresponding to the guide cavity (201), an upper mounting seat (22) is provided at the opening of the upper end of the outer shell (6), a driving assembly is provided on the upper mounting seat (22), the driving assembly comprises a driving member, a transmission member, and a connecting member, one end of the connecting member is connected to the overflow pipe (8), and the other end is connected to the transmission member; the driving member and the transmission member cooperate to control the guide rod (21) to slide up and down in the guide cavity (201), and simultaneously drive the connecting member, the overflow pipe (8), and the connecting pipe (7) to move up and down.

12. The basin overflow prevention device according to claim 11, characterized in that: The lower end of the connecting pipe (7) is provided with a base (23), the outer wall surface of the base (23) is provided with a fourth annular mounting groove (231), the lower wall surface is provided with a first water through hole (232), and the lower mounting seat (19) is provided with a second water through hole (191).

13. The basin overflow prevention device according to claim 11 or 12, characterized in that: A vertical limiting groove (202) is provided on the side wall of the guide member (20), and a limiting protrusion (24) used in conjunction with the limiting groove (202) is provided on the guide rod (21).

14. The basin overflow prevention device according to claim 13, characterized in that: A fixed cover (25) is fixedly arranged at the upper end of the upper mounting seat (22), and a notch is arranged at the upper end of the fixed cover (25). The driving member is a swing member (26), one end of the swing member (26) is hinged to the inner wall of the fixed cover (25), and the other end extends to the outside of the fixed cover (25) through the notch. The transmission member is an S-shaped hook (27), one end of the S-shaped hook (27) is rotatably connected to the lower wall surface of the middle section of the swing member (26), and the other end is rotatably connected to the upper end of the connecting member. The connecting member is a straight rod member (28), and the lower section of the straight rod member (28) is threadedly connected to the overflow pipe (8), and the two are fixed by a first fixing nut (29).

15. The basin overflow prevention device according to claim 14, characterized in that: A limiting portion (221) is vertically disposed in the upper mounting seat (22), and an upper section of the straight rod (28) is movably disposed in the limiting portion (221). The axes of the limiting portion (221), the straight rod (28), the overflow pipe (8), the connecting pipe (7), the guide rod (21), and the guide cavity (201) are parallel.

16. The basin overflow prevention device according to claim 13, characterized in that: The driving member is a rotating cover (30), the transmission member is a rotating shaft (31), and the rotating shaft (31) is divided into three sections: upper, middle and lower. The connecting member is divided into an upper screw-connected barrel (321) and a lower screw-connected rod (322). The upper section of the rotating shaft (31) is fixedly connected to the rotating cover (30) by a pin, and the middle section is clearance-matched with the upper mounting seat (22). The upper wall surface of the lower section of the rotating shaft (31) abuts against the lower wall surface of the upper mounting seat (22), and the outer wall surface is threadedly connected to the inner wall surface of the upper screw-connected barrel (321). The lower screw-connected rod (322) is threadedly connected to the overflow pipe (8), and the two are fixed by a second fixing nut (33).

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