CN212689156U - But switch water seal floor drain - Google Patents
But switch water seal floor drain Download PDFInfo
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- CN212689156U CN212689156U CN202021154745.0U CN202021154745U CN212689156U CN 212689156 U CN212689156 U CN 212689156U CN 202021154745 U CN202021154745 U CN 202021154745U CN 212689156 U CN212689156 U CN 212689156U
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- side wall
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Abstract
The utility model discloses a switchable water seal floor drain, which comprises a button, a floor drain shell and a bounce core; the floor drain shell is provided with a first water inlet and a first water outlet, and the button cup is arranged in the first water inlet; a water seal plate is arranged in the circumferential direction of the first drainage port; the bouncing core is vertically arranged in the floor drain shell; when the bouncing core is in an extension state, the bouncing core supports the button cup to be matched with the water seal plate to form a water seal floor drain; when the bouncing core is in a shrinking state, the button cup seals the drainage channel. The design has the characteristic of manually closing the drainage channel of the floor drain, and the floor drain can be manually closed when a user does not use the floor drain for draining for a long time, so that the phenomenon that the sewer returns odor indoors due to the dryness of the water seal is avoided.
Description
Technical Field
The utility model relates to a technical field that floor drain device made, in particular to but switch water seal floor drain.
Background
The floor drain is a floor drainage device commonly used in toilets and bathrooms and is widely applied.
The button cup type floor drain is a common floor drain in the early period, is based on the principle of a communicating vessel, is deodorized by water seal, and has the characteristic of good deodorization effect. However, the button-cup type floor drain has a serious problem that if a user does not timely replenish water to the water seal, the water seal is dried up, the button-cup type floor drain fails, and the sewer returns odor to the room.
Disclosure of Invention
The utility model provides a to above-mentioned problem, but switch water seal floor drain is provided, but has the characteristics of manual closing floor drain drainage channel, when the user does not use the floor drain drainage for a long time, can manually close the floor drain to avoid causing the sewer to indoor anti-flavor because of the water seal is dry.
In order to achieve the above object, the present invention provides the following technical solutions: a switchable water seal floor drain comprises a button, a floor drain shell and a bounce core; the button comprises a first top wall and a first side wall; the floor drain shell comprises a second side wall and a second bottom wall, a first water inlet is formed in the top of the floor drain shell, a first water drainage port is formed in the second bottom wall of the floor drain shell, the first water drainage port is located right below the first water inlet, and a drainage channel is formed between the first water inlet and the first water drainage port; the button cup is arranged in the first water inlet and can be longitudinally inserted into and pulled out of the first water inlet up and down; a water seal plate is longitudinally arranged in the circumferential direction of the first drainage port and is fixedly connected with the floor drain shell, the upper edge of the water seal plate is lower than the upper edge of the second side wall, the water seal plate is arranged below the button cup and is positioned on the inner side of the first side wall of the button cup, and the specification of the water seal plate is matched with that of the button cup; the first side wall is positioned between the water seal plate and the second side wall; the bouncing core is vertically arranged in the floor drain shell and comprises an upper column and a lower column, the upper column is fixedly connected with the button cup, and the lower column is fixedly connected with the water seal plate or the floor drain shell;
when the bouncing core is in an extending state, the lower edge of the first side wall of the button cup is lower than the upper edge of the water sealing plate; in the floor drain shell, the bouncing core supports the button cup to be matched with the water seal plate to form a water seal floor drain;
when the bouncing core is in a shrinking state, the button cup seals the drainage channel.
Furthermore, the button cup further comprises a first cover plate fixedly connected above the first top wall, and the specification of the first cover plate is matched with that of the first water inlet; when the bouncing core is in a shrinking state, the first cover plate seals the first water inlet.
Furthermore, a first filter device is fixedly connected to the first cover plate; when the bouncing core is in an extension state, the first filtering device filters water flowing through a gap between the first cover plate and the first water inlet; when the bouncing core is in a shrinking state, the first filtering device is embedded into the first water inlet.
Furthermore, the first filtering device is a vertically arranged first filtering net, and the upper edge of the first filtering net is fixedly connected with the first cover plate; when the bouncing core is in an extending state, the first filter screen covers a gap between the first cover plate and the first water inlet, and water flowing through the gap between the first cover plate and the first water inlet is filtered.
Further, a second water outlet is formed in the upper edge of the water sealing plate; the specification of the button cup is matched with that of the water seal plate; when the bouncing core is in a shrinking state, the button cup seals the second water outlet.
Furthermore, the specification of the first side wall is matched with that of the floor drain shell, and when the bouncing core is in a shrinking state, the first side wall is attached to the floor drain shell to seal the drainage channel.
Furthermore, the button cup also comprises a second cover plate which is fixedly connected to the outer side surface of the first side wall; when the bouncing core is in a shrinking state, the lower edge of the second cover plate is not lower than the upper edge of the water sealing plate; the second cover plate is matched with a gap between the first side wall and the second side wall, and the gap between the first side wall and the second side wall is wide at the top and narrow at the bottom; when the bouncing core is in an extension state, a water passing gap is formed between the second cover plate and the second side wall; when the bouncing core is in a shrinking state, the second cover plate is attached to the second side wall to seal the drainage channel.
Furthermore, a second filtering device is arranged between the button cup and the floor drain shell, and the second filtering device filters water flowing through the drainage channel.
Further, the second filter device is disposed between the first sidewall and the second sidewall.
Furthermore, a washing machine drainage pipe interface is arranged on the first top wall of the button cup and communicated with the first drainage port.
The utility model has the advantages that:
when a user does not use the floor drain for draining water for a long time, the floor drain can be manually closed, so that the phenomenon that the sewer returns odor to the indoor space due to the drying of the water seal can be effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram provided in the first embodiment of the present invention.
Fig. 2 is a schematic structural diagram provided in the second embodiment of the present invention.
Fig. 3 is a schematic structural diagram provided by the third embodiment of the present invention.
Fig. 4 is a schematic structural diagram provided by the fourth embodiment of the present invention.
Description of reference numerals: 1. covering a cup; 2. a floor drain housing; 3. a bounce core; 4. a first top wall; 5. a first side wall; 6. a second side wall; 7. a second bottom wall; 8. a first water inlet; 9. a first drain port; 10. a water seal plate; 11. a first bracket; 12. a first card slot; 13. a first plate body; 14. a first seal ring; 15. a first filter screen; 16. a second water discharge port; 17. a second seal ring; 18. a first mounting post; 19. a second filter screen; 20. a third seal ring; 21. a second cover plate; 22. the water outlet pipe interface of the washing machine; 23. a second support.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Example one
As shown in fig. 1, a switchable water seal floor drain comprises a button cup 1, a floor drain shell 2 and a bounce core 3; the button 1 comprises a first top wall 4 and a first side wall 5; the floor drain housing 2 comprises a second side wall 6 and a second bottom wall 7; the top of the floor drain shell 2 is provided with a first water inlet 8, a second bottom wall 7 of the floor drain shell 2 is provided with a first water outlet 9, the first water outlet 9 is arranged right below the first water inlet 8, and a water drainage channel is formed between the first water inlet 8 and the first water outlet 9.
The opening of the button cup 1 is downwards arranged in the first water inlet 8, and the button cup can be longitudinally inserted into and pulled out of the first water inlet 8. A water seal plate 10 is longitudinally arranged in the floor drain shell 2 in the circumferential direction of the first drain port 9, the water seal plate 10 is fixedly connected with the floor drain shell 2, the upper edge of the water seal plate 10 is lower than the upper edge of the second side wall 6, the water seal plate 10 is arranged below the button cup 1 and is positioned on the inner side of the first side wall 5 of the button cup 1, and the specification of the water seal plate is matched with that of the button cup 1; the first side wall 5 is located between the water seal plate 10 and the second side wall 6.
In this embodiment, the water seal plate 10 is cylindrical, and the lower end of the water seal plate is fixedly connected to the second bottom wall 7 by welding.
The bouncing core 3 is vertically arranged in the floor drain shell 2 and comprises an upper column and a lower column, the upper column is fixedly connected with the button cup 1, and the lower column is fixedly connected with the water seal plate 10 or the floor drain shell 2.
The bouncing core 3 is the prior art, is longitudinally pressed once to be stretched to be in an extension state, and is pressed again to be contracted to be in a contraction state, and can be repeatedly operated. The specific structure can be seen in a 'key recovery type elastic piece' part in Chinese patent with the patent number of 200420080117.7 and the name of split type bounce floor drain. In the prior art, the bouncing core 3 comprises a telescopic column and a storage column, in this embodiment, the telescopic column is an upper column, and the storage column is a lower column. In an alternative embodiment, the telescopic column may be a lower column, and the storage column may be an upper column.
In this embodiment, the bouncing core 3 is vertically arranged right above the first drainage port 9. The upper column is in threaded connection with the bottom surface of the first top wall 4 of the button cup 1; the lower column is fixedly connected with a first support 11, a first clamping groove 12 matched with the first support 11 is arranged on the inner side of the first drainage port 9, and the lower column is clamped with the first clamping groove 12 through the first support 11.
As shown in fig. 1, when the bouncing core 3 is in an extended state, the lower edge of the first side wall 5 of the button 1 is lower than the upper edge of the water sealing plate 10; in the floor drain shell 2, the bounce core 3 supports the button cup 1 to be matched with the water seal plate 10 to form a water seal floor drain. After drainage, a water seal is formed between the water sealing plate 10 and the second side wall 6 below the upper edge of the water sealing plate 10.
When the bouncing core 3 is in a shrinking state, the button cup 1 downwards seals the drainage channel.
Specifically, the button cup 1 further comprises a first cover plate fixedly connected above the first top wall 4, and the specification of the first cover plate is matched with that of the first water inlet 8; when the bouncing core 3 is in a shrinking state, the first cover plate closes the first water inlet 8.
In this embodiment, the first cover plate includes a first plate body 13 and a first seal ring 14, the first plate body 13 is a horizontally arranged circular plate body, a groove matched with the first seal ring 14 is arranged on the side surface of the first plate body 13, and the first seal ring 14 is sleeved on the groove and protrudes out of the groove. The first cover plate is in interference fit with the first water inlet 8. When the bouncing core 3 is in a shrinking state, the first cover plate is embedded in the first water inlet 8 to seal the first water inlet 8.
The first plate body 13 is fixedly connected with the upper surface of the first top wall 4 of the button cup 1 in a welding mode. As an alternative embodiment, the first plate 13 and the first top wall 4 of the button 1 may also be integrally molded and cast.
In this embodiment, the first cover plate is fixedly connected with a first filtering device.
When the bouncing core 3 is in an extended state, the first filtering device filters water flowing through a gap between the first cover plate and the first water inlet 8.
When the bouncing core 3 is in a contracted state, the first filtering device is embedded into the first water inlet 8.
In this embodiment, the first filtering device is a vertically arranged first filtering net 15, the first filtering net 15 is cylindrical, the upper edge of the first filtering net 15 is fixedly connected with the bottom surface of the first plate body 13 by welding, and the lower edge of the first filtering net is embedded in the first water inlet 8; the outer side surface of the first filter screen 15 is attached to the inner edge of the first water inlet 8, or the gap between the outer side surface of the first filter screen and the inner edge of the first water inlet 8 is not larger than the aperture of the first filter screen 15.
As shown in fig. 1, when the bouncing core 3 is in an extended state, the first filter screen 15 covers a gap between the first cover plate and the first water inlet 8, and filters water flowing through the gap between the first cover plate and the first water inlet 8.
When the bouncing core 3 is in a contracted state, the first filter screen 15 is embedded into the first water inlet 8.
In this embodiment, the floor drain housing 2, the first bracket 11, the bouncing core 3, the water sealing plate 10, the button 1, the first plate body 13, and the first filter screen 15 are made of copper or stainless steel. The first sealing ring 14 is made of silica gel.
In this embodiment, the first water inlet 8 and the first water outlet 9 are circular. The first side wall 5, the second side wall 6 and the water seal plate 10 are vertically arranged. The first side wall 5 is cylindrical, and the diameter of the cylinder surrounded by the first side wall 5 is larger than that of the cylinder surrounded by the water seal plate 10.
The beneficial effect of this embodiment lies in:
when the floor drain is not used for a long time, a user can press the button cup 1 to push the bouncing core 3, so that the bouncing core 3 is downwards contracted to a contraction state. When the bouncing core 3 is in a contraction state, the button 1 seals the drainage channel. After the button cup 1 seals the drainage channel, the problem of odor reversion caused by the fact that water seal of the conventional button cup 1 type water seal floor drain is dried up can be solved.
In the second embodiment, when water is drained, the first filter screen 15 can block dirt such as hair and the like out of the floor drain housing 2, so that the probability of floor drain blockage is reduced.
In the embodiment, when the first cover plate is closed, the water seal can be closed, the drying speed of the water seal can be slowed down, and mosquitoes bred in the water seal can be prevented from entering a room.
Example two
As shown in fig. 2, the other steps are the same as the first embodiment, except that a second water discharge opening 16 is formed at the upper edge of the water sealing plate 10; the specification of the button cup 1 is matched with the water seal plate 10.
When the bouncing core 3 is in a contraction state, the button 1 closes the second water outlet 16.
In this embodiment, the button 1 further includes a second sealing ring 17 fixedly connected to the lower surface of the first top wall 4, the second sealing ring 17 is located right above the second water outlet 16, and the specification of the second sealing ring is matched with that of the second water outlet 16. The second sealing ring 17 is made of a silica gel material.
Specifically, a first mounting column 18 with the specification matched with the second water outlet 16 and a second sealing ring 17 is formed by downwardly protruding the lower surface of the first top wall 4, and the second sealing ring 17 is sleeved on the side surface of the first mounting column 18.
When the bouncing core 3 is in a contracted state, the lower end of the first mounting column 18 is inserted downwards into the second water outlet 16, and the second sealing ring 17 positioned on the side surface of the first mounting column 18 covers the upper surface of the second water outlet 16.
The second water outlet 16 is circular, the first mounting post 18 is cylindrical, and the second sealing ring 17 is circular.
In this embodiment, the top end of the upper column of the bouncing core 3 is in threaded connection with the lower surface of the first mounting column 18.
And a second filtering device is arranged between the button cup 1 and the floor drain shell 2 and filters water flowing through the drainage channel. In particular, the second filtering means are arranged between the first side wall 5 and the second side wall 6.
In this embodiment, the second filtering device is a second filter screen 19 transversely disposed, and the second filter screen 19 is made of stainless steel and is circular. The edge of the second filter 19 close to the first side wall 5 is an inner net edge, and the edge close to the second side wall 6 is an outer net edge.
In this embodiment, a first water inlet 8 is formed at an upper edge of the second side wall 6, and the outer net edge is fixedly connected with an inner edge of the first water inlet 8 by welding. The inner net edge is attached to the first side wall 5, or the gap between the inner net edge and the first side wall 5 is not larger than the aperture of the second filter net 19. In the process of opening and closing the button cup 1 up and down, the first side wall 5 moves up and down along the inner net edge; the first side wall 5, which is fitted with the inner flange, is vertically arranged perpendicular to a horizontal plane.
EXAMPLE III
As shown in fig. 3, the other embodiments are the same as the embodiments, except that the first side wall 5 is matched with the floor drain housing 2 in specification, and when the bouncing core 3 is in a contracted state, the first side wall 5 is attached to the floor drain housing 2 to close the drainage channel.
In this embodiment, the first side wall 5 further includes a third sealing ring 20, a groove matched with the third sealing ring 20 is formed on the outer side surface of the first side wall 5, the inner edge of the third sealing ring 20 is sleeved on the groove, and the outer edge of the third sealing ring 20 is downward vertically and matched with the second bottom wall 7; when the bouncing core 3 is in a shrinking state, the outer edge of the third sealing ring 20 is attached to the second bottom wall 7 to close the drainage channel.
In this embodiment, the inner net edge is fixedly connected with the first side wall 5 by welding. In the process of vertically opening and closing the button cup 1, the second filter screen 19 moves up and down along with the button cup 1, the outer screen edge is attached to the second side wall 6, or the gap between the outer screen edge and the second side wall 6 is not larger than the aperture of the second filter screen 19. The second side wall 6 cooperating with the outer net edge is arranged vertically perpendicular to the horizontal plane. The outer net edge is not higher than the upper edge of the first water inlet 8.
In this embodiment, the third sealing ring 20 is located below the second filter 19. The top end of the upper column of the bouncing core 3 is in threaded connection with the lower surface of the first top wall 4.
Example four
As shown in fig. 4, the other embodiment is the same as the embodiment, except that the button 1 further includes a second cover plate 21, and the second cover plate 21 is fixedly connected to the outer side surface of the first side wall 5. When the bouncing core 3 is in a contracted state, the lower edge of the second cover plate 21 is not lower than the upper edge of the water sealing plate 10.
The second cover plate 21 is matched with a gap between the first side wall 5 and the second side wall 6, and the gap between the first side wall 5 and the second side wall 6 is wide at the top and narrow at the bottom; when the bouncing core 3 is in a contracted state, the second cover plate 21 is attached to the second side wall 6 to close the drainage channel.
In this embodiment, the second cover plate 21 is annular, transversely disposed, and made of soft silica gel. During drainage, the second cover plate 21 is shown tilted downward by the water flow to facilitate drainage. When the water is not drained, the second cover plate 21 can slow down water seal evaporation.
A groove matched with the second cover plate 21 is formed in the first side wall 5, and the second cover plate 21 is sleeved on the groove and fixedly connected with the first side wall 5. The second cover plate 21 is located below the second filter 19.
When the bouncing core 3 is in an extension state, a water passing gap is formed between the outer edge of the second cover plate 21 and the second side wall 6.
When the bouncing core 3 is in a contracted state, the second cover plate 21 is attached to the second side wall 6 downward to close the drainage channel.
When the bouncing core 3 is in a shrinking state, the second cover plate 21 is higher than a water seal. The second cover plate 21 can close the water seal when the bouncing core 3 is in a shrinking state.
In this embodiment, the second cover plate 21 is provided to seal the water seal, which has the same beneficial effect as the first cover plate.
A washing machine drain pipe interface 22 is arranged on the first top wall 4 of the button cup 1, and the washing machine drain pipe interface 22 is communicated with the first drain port 9.
The washing machine drain interface 22 mates with a conventional washing machine drain for connection to a conventional washing machine drain. When the bouncing core 3 is in a shrinking state, the button cup 1 seals the drainage channel, and water cannot flow backwards indoors when the washing machine drains water.
In this embodiment, the upper pillar of the bouncing core 3 is fixedly connected with the lower surface of the first top wall 4 through a second bracket 23 by welding. The second bracket 23 is made of stainless steel. The lower end of the second support 23 is fixedly connected with the upper column in a welding mode, and the upper end of the second support 23 is fixedly connected with the lower surface of the first top wall 4 in a welding mode.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. A switchable water seal floor drain is characterized by comprising a button (1), a floor drain shell (2) and a bounce core (3);
the button (1) comprises a first top wall (4) and a first side wall (5);
the floor drain shell (2) comprises a second side wall (6) and a second bottom wall (7), a first water inlet (8) is formed in the top of the floor drain shell (2), a first water discharge port (9) is formed in the second bottom wall (7) of the floor drain shell (2), the first water discharge port (9) is located right below the first water inlet (8), and a water discharge channel is formed between the first water inlet (8) and the first water discharge port (9); the button cup (1) is arranged in the first water inlet (8) and can be longitudinally inserted into and pulled out of the first water inlet (8) up and down; a water seal plate (10) is longitudinally arranged in the circumferential direction of the first drainage port (9), the water seal plate (10) is fixedly connected with the floor drain shell (2), the upper edge of the water seal plate (10) is lower than the upper edge of the second side wall (6), the water seal plate (10) is arranged below the button cup (1) and is positioned on the inner side of the first side wall (5) of the button cup (1), and the specification of the water seal plate is matched with that of the button cup (1); the first side wall (5) is positioned between the water sealing plate (10) and the second side wall (6);
the bouncing core (3) is vertically arranged in the floor drain shell (2) and comprises an upper column and a lower column, the upper column is fixedly connected with the button cup (1), and the lower column is fixedly connected with the water seal plate (10) or the floor drain shell (2);
when the bouncing core (3) is in an extending state, the lower edge of the first side wall (5) of the button cup (1) is lower than the upper edge of the water sealing plate (10); in the floor drain shell (2), the bouncing core (3) supports the button cup (1) to be matched with the water seal plate (10) to form a water seal floor drain;
when the bouncing core (3) is in a shrinking state, the button cup (1) seals the drainage channel.
2. The switchable water seal floor drain according to claim 1, wherein the button (1) further comprises a first cover plate fixedly connected above the first top wall (4), the first cover plate being sized to fit the first water inlet (8); when the bouncing core (3) is in a shrinking state, the first cover plate closes the first water inlet (8).
3. The switchable water seal floor drain according to claim 2, wherein a first filtering device is fixed on the first cover plate; when the bouncing core (3) is in an extension state, the first filtering device filters water flowing through a gap between the first cover plate and the first water inlet (8); when the bouncing core (3) is in a shrinking state, the first filtering device is embedded into the first water inlet (8).
4. The switchable water seal floor drain according to claim 3, wherein the first filtering device is a vertically arranged first filtering net (15), and the upper edge of the first filtering net (15) is fixedly connected with the first cover plate; when the bouncing core (3) is in an extension state, the first filter screen (15) covers a gap between the first cover plate and the first water inlet (8), and water flowing through the gap between the first cover plate and the first water inlet (8) is filtered.
5. Switchable water seal floor drain according to claim 1, characterized in that the upper edge of the water sealing plate (10) forms a second water outlet (16); the specification of the button cup (1) is matched with that of the water seal plate (10); when the bouncing core (3) is in a shrinking state, the button cup (1) seals the second water outlet (16).
6. The switchable water seal floor drain according to claim 1, wherein the first side wall (5) is matched with the floor drain housing (2) in specification, and when the bouncing core (3) is in a shrinking state, the first side wall (5) is attached to the floor drain housing (2) to close the drainage channel.
7. The switchable water seal floor drain according to claim 1, wherein the button (1) further comprises a second cover plate (21), the second cover plate (21) is fixedly connected to the outer side surface of the first side wall (5); when the bouncing core (3) is in a shrinking state, the lower edge of the second cover plate (21) is not lower than the upper edge of the water sealing plate (10); the second cover plate (21) is matched with a gap between the first side wall (5) and the second side wall (6), and the gap between the first side wall (5) and the second side wall (6) is wide at the top and narrow at the bottom; when the bouncing core (3) is in an extension state, a water passing gap is formed between the second cover plate (21) and the second side wall (6); when the bouncing core (3) is in a shrinking state, the second cover plate (21) is attached to the second side wall (6) to seal the drainage channel.
8. The switchable water seal floor drain according to claim 1, characterized in that a second filter device is arranged between the button cup (1) and the floor drain housing (2), and the second filter device filters the water flowing through the drainage channel.
9. Switchable water seal floor drain according to claim 8, characterized in that the second filter means is arranged between the first side wall (5) and the second side wall (6).
10. The switchable water seal floor drain according to claim 1, characterized in that a washing machine drain pipe interface (22) is arranged on the first top wall (4) of the button cup (1), and the washing machine drain pipe interface (22) is communicated with the first drain opening (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021154745.0U CN212689156U (en) | 2020-06-20 | 2020-06-20 | But switch water seal floor drain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021154745.0U CN212689156U (en) | 2020-06-20 | 2020-06-20 | But switch water seal floor drain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212689156U true CN212689156U (en) | 2021-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021154745.0U Active CN212689156U (en) | 2020-06-20 | 2020-06-20 | But switch water seal floor drain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212689156U (en) |
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2020
- 2020-06-20 CN CN202021154745.0U patent/CN212689156U/en active Active
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