CN220572046U - Bean conveying device of coffee machine - Google Patents
Bean conveying device of coffee machine Download PDFInfo
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- CN220572046U CN220572046U CN202322107588.8U CN202322107588U CN220572046U CN 220572046 U CN220572046 U CN 220572046U CN 202322107588 U CN202322107588 U CN 202322107588U CN 220572046 U CN220572046 U CN 220572046U
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- bean outlet
- coffee machine
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- 244000046052 Phaseolus vulgaris Species 0.000 title claims abstract description 256
- 235000010627 Phaseolus vulgaris Nutrition 0.000 title claims abstract description 256
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 31
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 17
- 230000009467 reduction Effects 0.000 abstract description 2
- 241000533293 Sesbania emerus Species 0.000 description 18
- 230000000903 blocking effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model provides a bean conveying device of a coffee machine, which comprises a bean box, a bean outlet seat, a weight sensor and a grinding box, wherein a bean inlet cavity and a bean conveying cavity which are communicated up and down are formed in the bean box, a rotatable screw rod is arranged in the bean conveying cavity, and the screw rod is driven to rotate by a driving device; the bean box is detachably connected to a bean outlet seat, and a bean outlet channel communicated with the grinding box is arranged on the bean outlet seat; a bottom cover is arranged on the bottom opening of the bean conveying cavity, and a bean outlet is arranged on the bottom cover; the bean outlet seat is fixedly connected with the weight sensor, and the weight sensor and the driving device are respectively and electrically connected with the control mechanism. When the bean box is removed from the bean outlet seat, residual beans in the bean box are discharged from an upper opening of the bean inlet cavity or a bean outlet of the bottom cover, so that no bean residue is ensured in the bean conveying device; the weight sensor is arranged to sense the reduction value of the total weight of the bean box and the bean outlet seat, and the accurate quantitative coffee powder is realized by controlling the mode of quantifying beans to obtain equivalent powder, so that no beans or powder residues in the grinding box are ensured.
Description
Technical Field
The utility model relates to the technical field of coffee machines, in particular to a bean conveying device of a coffee machine.
Background
At present, the discharge port of the bean box of the coffee machine on the market is directly communicated with the grinding system, because the bean output is not controlled, a large amount of beans and powder remain in the grinding cavity after grinding the coffee beans each time, the beans are not cleaned for a long time and are easy to oxidize, bacteria are bred, the taste is not affected after the residual part is cleaned before grinding the next time or when the coffee beans are replaced, and the defects on the structure are quite obvious.
In order to solve the technical problem, chinese patent publication No. CN218009422U provides a bean conveying device of a coffee machine, which comprises a bean box, a bean conveying cavity and a grinding box which are sequentially communicated from top to bottom; the bean conveying cavity is rotationally connected with a screw rod, and the screw rod is driven to rotate by a driving device; the bottom of the bean conveying cavity is provided with a weight sensor, and the weight sensor and the driving device are respectively and electrically connected with the control mechanism. The feeding amount of the coffee beans in the grinding box is controlled by the screw rod, so that the amount of the powder is required to be less, and no beans or powder residues in the grinding box are ensured. The above-mentioned prior art still has coffee beans and remains in the defeated beans intracavity because of the problem in the structural setting, and the hob is located in defeated beans intracavity moreover, and it becomes difficult to clear away the coffee beans that remain in defeated beans intracavity.
Therefore, the prior art has a large room for improvement.
Disclosure of Invention
The utility model aims to make up the defects of the prior art and provides a bean conveying device of a coffee machine.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme:
the utility model relates to a bean conveying device of a coffee machine, which comprises a bean box, a bean outlet seat, a weight sensor and a grinding box, wherein a bean inlet cavity and a bean conveying cavity which are communicated up and down are formed in the bean box, a rotatable screw rod is arranged in the bean conveying cavity, and the screw rod is driven to rotate by a driving device; the bean box is detachably connected to a bean outlet seat, and a bean outlet channel communicated with the grinding box is arranged on the bean outlet seat; a bottom cover is arranged on the bottom opening of the bean conveying cavity, and a bean outlet correspondingly communicated with the bean outlet channel is arranged on the bottom cover; the bean outlet seat is fixedly connected with the weight sensor, and the weight sensor and the driving device are respectively and electrically connected with the control mechanism.
The screw is arranged in the bean box, and the bean box is detachably connected to the bean outlet seat, so that the bean box can be detached from the bean outlet seat after the bean conveying operation is finished, and the residual beans in the bean box are discharged from the upper opening of the bean inlet cavity or the bean outlet of the bottom cover, the operation is convenient and quick, and no bean residue in the bean conveying device can be ensured; the weight sensor bears the total weight of the bean box and the bean outlet seat, the weight sensor senses that the weight is reduced to a transmission signal, the screw is controlled to stop rotating when the weight is reduced to a quantitative value, and the accurate quantitative coffee powder is realized in a mode that the equivalent powder is obtained by quantitative beans, so that no beans or powder residues in the grinding box are ensured.
According to the scheme, the rotary fixing piece is fixed in the bean inlet cavity, and the screw is arranged between the rotary fixing piece and the bottom cover. By adopting the structure, the screw is axially limited between the bottom cover and the rotary fixing piece.
According to the scheme, the material blocking umbrella is fixedly connected to the rotary fixing piece. When coffee beans are poured into the bean cavity by arranging the material blocking umbrella, the coffee beans impact the material blocking umbrella and uniformly fall into the bean cavity along the edge of the material blocking umbrella.
According to the scheme, the coffee machine further comprises a top cover, wherein the top cover is fixed at the upper opening of the coffee machine shell, and the grinding box is positioned in the coffee machine shell; the bean outlet seat is inserted on the top cover, and a positioning opening is formed in the outer side wall of the bean outlet seat; one end of the weight sensor is fixed on the lower side of the top cover through a pressing block, and the other end of the weight sensor is inserted into and fixed in the positioning opening. Through the structure, the weight sensor is installed, so that the weight sensor senses the change of the total weight of the bean box and the bean outlet seat.
According to the scheme, the top cover is provided with the bean discharging observation window corresponding to the grinding box. The user sees through bean observation window down can conveniently observe the coffee beans and get into the operation of grinding mechanism in grinding case and the grinding case, is favorable to promoting user's impression experience.
According to the scheme, the bean outlet seat is provided with the mounting groove, and the lower end of the bean box is inserted into the mounting groove; a boss is arranged on the outer side wall of the bean box, a vertical groove is arranged on the inner side wall of the mounting groove, and the boss is arranged in the vertical groove in a vertically movable mode.
Through boss and vertical groove cooperation setting for when the boss inserts vertical groove, can ensure go out the beans mouth aligns with play beans passageway, improves the assembly efficiency of beans case and play beans seat.
According to the scheme, the sealing cover is sleeved on the bottom cover, a convex ring is arranged on the inner side wall of the sealing cover, a groove is arranged on the outer side wall of the bottom cover, the convex ring is rotatably arranged in the groove, and an opening is arranged on the sealing cover; the opening is aligned with the bean outlet by rotating the sealing cap.
Through the structure, the opening on the sealing cover can be controlled to be aligned with the bean outlet by rotating the sealing cover, so that the opening and closing of the bean outlet are controlled.
According to the scheme, the outer side wall of the sealing cover is provided with the poking point, the inner side wall of the mounting groove is provided with the concave chute, the poking point is slidably arranged in the concave chute, and the sealing cover can be controlled to rotate relative to the bottom cover by sliding the poking point in the concave chute; when the poking point slides to the lower end of the concave chute, the opening is aligned with the bean outlet; when the poking point slides to the upper end of the concave chute, the sealing cover seals the bean outlet.
Through the structure, when the bean box moves up and down in the mounting groove, the opening and closing of the bean outlet can be automatically controlled. Specifically, when the bean box moves up and down in the mounting groove, the poking point slides along the concave chute and simultaneously controls the sealing cover to rotate relative to the bottom cover; when the poking point slides to the lower end of the concave chute, the opening is aligned with the bean outlet, so that the bean outlet is communicated with the bean outlet channel; when dismantling the bean case from the mounting groove, thereby dial the upper end that the point slides to indent spout makes the closing cap carry out the shutoff to the play beans mouth, and then effectively prevent to follow out the beans mouth and spill when the bean case is dismantled from going out the beans seat at the beans of bean incasement.
According to the scheme, the driving device comprises a driving motor, the driving motor is arranged at the bottom of the bean outlet seat, a transmission shaft is fixedly connected to an output shaft of the driving motor, and the upper end of the transmission shaft penetrates through the bottom cover and is inserted into a limiting hole at the lower end of the screw rod.
Through the arrangement of the structure, when the bean box is removed from the bean outlet seat, the screw is disconnected with the output shaft of the driving motor; when the bean box is arranged on the bean outlet seat, the upper end of the transmission shaft is inserted into the limit hole at the lower end of the screw rod, so that the driving motor is in transmission connection with the screw rod, and the screw rod is driven to rotate by controlling the output shaft of the driving motor.
According to the scheme, the control mechanism is also electrically connected with the grinding mechanism in the grinding box. The control mechanism controls the driving device to stop working and controls the grinding mechanism to start working.
The utility model has the beneficial effects that:
according to the utility model, the rotatable screw is arranged in the bean conveying cavity, and the bean box is detachably connected to the bean outlet seat, so that the bean box can be detached from the bean outlet seat after the bean conveying operation is finished, and the beans remained in the bean box are discharged from the upper opening of the bean inlet cavity or the bean outlet of the bottom cover, so that the bean conveying device is convenient and quick to operate, and no bean residues can be ensured in the bean conveying device; the weight sensor is arranged to sense the reduction value of the total weight of the bean box and the bean outlet seat, and the accurate quantitative coffee powder is realized by controlling the mode of quantifying beans to obtain equivalent powder, so that no beans or powder residues in the grinding box are ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is a second schematic cross-sectional view of the present utility model;
FIG. 4 is a schematic view of the structure of the bean box of the present utility model;
FIG. 5 is an exploded view of the structure of FIG. 4;
FIG. 6 is a schematic diagram of the structure of the soybean outlet seat according to the present utility model;
fig. 7 is an exploded view of the structure of fig. 6.
In the figure: 1. a bean box; 11. a bean inlet cavity; 111. a rotary fixing member; 112. a material blocking umbrella; 12. a bean conveying cavity; 121. a screw; 1211. a limiting hole; 122. a boss; 2. a bottom cover; 21. a bean outlet; 22. a groove; 3. a sealing cover; 31. an opening; 32. a convex ring; 33. dialing points; 4. a bean base is arranged; 41. a mounting groove; 411. a vertical groove; 412. a concave chute; 42. a bean outlet channel; 43. a positioning port; 5. a grinding box; 6. a top cover; 61. a transparent cover; 7. a weight sensor; 71. briquetting; 8. a driving motor; 81. and a transmission shaft.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in fig. 1-7, the utility model provides a bean conveying device of a coffee machine, which comprises a bean box 1, a bean outlet seat 4, a weight sensor 7 and a grinding box 5, wherein a bean inlet cavity 11 and a bean conveying cavity 12 which are communicated up and down are formed in the bean box 1, a rotatable screw rod 121 is arranged in the bean conveying cavity 12, and the screw rod 121 is driven to rotate by a driving device; the bean box 1 is detachably connected to a bean outlet seat 4, and a bean outlet channel 42 communicated with the grinding box 5 is arranged on the bean outlet seat 4; a bottom cover 2 is arranged on the bottom opening 31 of the bean conveying cavity 12, and a bean outlet 21 correspondingly communicated with the bean outlet channel 42 is arranged on the bottom cover 2; the bean outlet seat 4 is fixedly connected with the weight sensor 7, and the weight sensor 7 and the driving device are respectively and electrically connected with the control mechanism.
The screw 121 is arranged in the bean box 1, and the bean box 1 is detachably connected to the bean outlet seat, so that the bean box 1 can be detached from the bean outlet seat 4 after the bean conveying operation is finished, and the residual beans in the bean box 1 are discharged from the upper opening of the bean inlet cavity 11 or the bean outlet 21 of the bottom cover 2, the operation is convenient and quick, and no bean residue in the bean conveying device can be ensured; the weight sensor 7 bears the total weight of the bean box 1 and the bean outlet seat 4, the weight sensor 7 senses that the weight is reduced to be a transmission signal, the screw 121 is controlled to stop rotating when the weight is reduced to a quantitative value, and the accurate quantitative coffee powder is realized in a mode of obtaining equal amount of powder by quantifying beans, so that no beans or powder residues in the grinding box 5 are ensured.
Further, a rotation fixing member 111 is fixed in the bean inlet chamber 11, and the screw 121 is disposed between the rotation fixing member 111 and the bottom cover 2. With the above-described structural arrangement, the screw is axially restrained between the bottom cover 2 and the rotation fixing member 111.
Further, a retaining umbrella 112 is fixedly connected to the rotation fixing member 111. By arranging the retaining umbrella 112, when coffee beans are poured into the bean cavity 11, the coffee beans impact the retaining umbrella 112 and uniformly fall into the bean cavity along the edge of the retaining umbrella 112.
Further, the coffee machine further comprises a top cover 6, wherein the top cover 6 is fixed at an upper opening of a coffee machine shell (not shown in the figure), and the grinding box 5 is positioned in the coffee machine shell; the bean outlet seat 4 is inserted on the top cover 6, and a positioning opening 43 is arranged on the outer side wall of the bean outlet seat 4; one end of the weight sensor 7 is fixed on the underside of the top cover 6 by a pressing block 71, and the other end of the weight sensor 7 is inserted and fixed in the positioning hole 43. Through the above structure setting, realize the installation to weight sensor 7, make weight sensor 7 respond to the change of the total weight of beans case 1 and play beans seat 4.
Further, the top cover 6 is provided with a bean-discharging observation window 61 corresponding to the grinding box 5. The user can conveniently observe that the coffee beans enter the grinding box 5 and the grinding mechanism in the grinding box 5 through the bean discharging observation window 61, so that the user's impression experience is improved.
Further, the bean outlet seat 4 is provided with a mounting groove 41, and the lower end of the bean box 1 is inserted into the mounting groove 41; a boss 122 is disposed on the outer side wall of the bean box 1, a vertical slot 411 is disposed on the inner side wall of the mounting slot 41, and the boss 122 is disposed in the vertical slot 411 in a manner of being able to move up and down.
Through boss 122 and vertical slot 411 cooperation setting for when boss 122 inserts vertical slot 411, can ensure go out the beans mouth 21 and go out beans passageway 42 alignment, improve the assembly efficiency of beans case 1 and play beans seat 4.
Further, a sealing cover 3 is sleeved on the bottom cover 2, a convex ring 32 is arranged on the inner side wall of the sealing cover 3, a groove 22 is arranged on the outer side wall of the bottom cover 2, the convex ring 32 is rotatably arranged in the groove 22, and an opening 31 is arranged on the sealing cover 3; the opening 31 can be aligned with the bean outlet 21 by turning the sealing cap 3.
Through the structure, the opening 31 on the sealing cover 3 can be controlled to be aligned with the bean outlet 21 by rotating the sealing cover 3, so that the opening and closing of the bean outlet 21 can be controlled.
Further, a poking point 33 is arranged on the outer side wall of the sealing cover 3, a concave chute 412 is arranged on the inner side wall of the mounting groove 41, the poking point 33 is slidably arranged in the concave chute 412, and the sealing cover 3 can be controlled to rotate relative to the bottom cover 2 by sliding the poking point 33 in the concave chute 412; when the poking point 33 slides to the lower end of the concave chute 412, the opening 31 is aligned with the bean outlet 21; when the poking point 33 slides to the upper end of the concave chute 412, the bean outlet 21 is blocked by the sealing cover 3.
Through the above structure arrangement, when the bean box 1 moves up and down in the mounting groove 41, the opening and closing of the bean outlet 21 is automatically controlled. Specifically, when the bean box 1 moves up and down in the mounting groove 41, the poking point 33 slides along the concave chute 412 and simultaneously controls the sealing cover 3 to rotate relative to the bottom cover 2; when the poking point 33 slides to the lower end of the concave chute 412, the opening 31 is aligned with the bean outlet 21, so that the bean outlet 21 is communicated with the bean outlet channel 42; when the bean box 1 is removed from the mounting groove 41, the poking point 33 slides to the upper end of the concave chute 412, so that the sealing cover 3 seals the bean outlet 21, and beans remained in the bean box 1 can be effectively prevented from leaking from the bean outlet 21 when the bean box 1 is removed from the bean outlet seat 4.
Further, the driving device comprises a driving motor 8, the driving motor 8 is arranged at the bottom of the bean outlet seat 4, a driving shaft 81 is fixedly connected to an output shaft of the driving motor 8, and the upper end of the driving shaft 81 passes through the bottom cover 2 and is inserted into a limit hole 1211 at the lower end of the screw 121.
By the arrangement, when the bean box 1 is detached from the bean outlet seat 4, the screw 121 is disconnected with the output shaft of the driving motor 8; when the bean box 1 is mounted on the bean outlet seat 4, the upper end of the transmission shaft 81 is inserted into the limit hole 1211 at the lower end of the screw 121, so that the driving connection between the driving motor 8 and the screw 121 can be realized, and the screw 121 is driven to rotate by controlling the rotation of the output shaft of the driving motor 8.
Further, the control mechanism is also electrically connected with the grinding mechanism in the grinding box 5. The control mechanism controls the driving device to stop working and controls the grinding mechanism to start working.
When the bean conveying device of the coffee machine is used, a sufficient amount of coffee beans are poured into the bean inlet cavity 11, and the coffee beans strike the retaining umbrella 112 and uniformly fall into the bean inlet cavity 11 along the edge of the retaining umbrella 112; at this time, the weight detected by the weight sensor 7 is an initial weight value; the control mechanism controls the driving motor 8 to rotate so as to drive the screw 121 to rotate, and coffee beans in the bean inlet cavity 11 enter the bean conveying cavity 12 under the rotation action of the screw 121 and then enter the grinding box 5 through the bean outlet 21, the opening 31 and the bean outlet channel 42 in sequence; the weight sensor 7 detects the weight in real time in the process and marks the weight as a real-time weight value; decreasing the rotational speed of the screw 121 when the initial weight value minus the real-time weight value approaches the quantitative value; when the initial weight value minus the real-time weight value is equal to the quantitative value, the driving motor 8 is controlled to stop rotating, and the grinding mechanism is controlled to start working until the coffee beans are completely ground into powder and then the coffee powder in the grinding box 5 is completely discharged. After the completion of the work, the bean box 1 is lifted up, the poking point 33 slides along the concave chute 412, when the bean box 1 is separated from the bean outlet seat 4, the poking point 33 slides to the upper end of the concave chute 412 so that the sealing cover 3 seals the bean outlet 21, the coffee beans remained in the bean box 1 are prevented from leaking out of the bean outlet 21, and then the coffee beans are discharged from the upper opening of the bean inlet cavity 11 or the sealing cover 3 is rotated so that the opening 31 is aligned with the bean outlet 21 to open the bean outlet 21 and discharge the coffee beans from the bean outlet 21.
The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.
Claims (10)
1. The bean conveying device of the coffee machine comprises a bean box, a bean outlet seat, a weight sensor and a grinding box, wherein a bean inlet cavity and a bean conveying cavity which are communicated up and down are formed in the bean box,
a rotatable screw is arranged in the bean conveying cavity, and the screw is driven to rotate by a driving device;
the bean box is detachably connected to a bean outlet seat, and a bean outlet channel communicated with the grinding box is arranged on the bean outlet seat;
a bottom cover is arranged on the bottom opening of the bean conveying cavity, and a bean outlet correspondingly communicated with the bean outlet channel is arranged on the bottom cover;
the bean outlet seat is fixedly connected with the weight sensor, and the weight sensor and the driving device are respectively and electrically connected with the control mechanism.
2. The coffee machine of claim 1, wherein a rotary fixing member is fixed in the bean inlet chamber, and the screw is disposed between the rotary fixing member and the bottom cover.
3. The bean delivery device of claim 2, wherein the rotary fixing member is fixedly connected with a retaining umbrella.
4. The coffee machine bean delivery device of claim 1, further comprising a top cover secured to an upper opening of a coffee machine housing, the grinding bin being located within the coffee machine housing; the bean outlet seat is inserted on the top cover, and a positioning opening is formed in the outer side wall of the bean outlet seat; one end of the weight sensor is fixed on the lower side of the top cover through a pressing block, and the other end of the weight sensor is inserted into and fixed in the positioning opening.
5. The bean delivery device of claim 4, wherein the top cover is provided with a bean discharging observation window corresponding to the grinding box.
6. The bean delivering device of the coffee machine according to claim 1, wherein the bean outlet seat is provided with a mounting groove, and the lower end of the bean box is inserted into the mounting groove; a boss is arranged on the outer side wall of the bean box, a vertical groove is arranged on the inner side wall of the mounting groove, and the boss is arranged in the vertical groove in a vertically movable mode.
7. The bean delivery device of claim 6, wherein the bottom cover is sleeved with a sealing cover, a convex ring is arranged on the inner side wall of the sealing cover, a groove is arranged on the outer side wall of the bottom cover, and the convex ring is rotatably arranged in the groove; the sealing cover is provided with an opening, and the opening can be aligned with the bean outlet by rotating the sealing cover.
8. The bean conveying device of the coffee machine according to claim 7, wherein a poking point is arranged on the outer side wall of the sealing cover, an inner concave chute is arranged on the inner side wall of the mounting groove, the poking point is slidably arranged in the inner concave chute, and the sealing cover can be controlled to rotate relative to the bottom cover by sliding the poking point in the inner concave chute; when the poking point slides to the lower end of the concave chute, the opening is aligned with the bean outlet; when the poking point slides to the upper end of the concave chute, the sealing cover seals the bean outlet.
9. The bean delivery device of claim 1, wherein the driving device comprises a driving motor, the driving motor is arranged at the bottom of the bean outlet seat, a transmission shaft is fixedly connected to an output shaft of the driving motor, and the upper end of the transmission shaft penetrates through the bottom cover and is inserted into a limit hole at the lower end of the screw rod.
10. The coffee machine of claim 1, wherein the control mechanism is further electrically connected to a grinding mechanism within the grinding chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322107588.8U CN220572046U (en) | 2023-08-07 | 2023-08-07 | Bean conveying device of coffee machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322107588.8U CN220572046U (en) | 2023-08-07 | 2023-08-07 | Bean conveying device of coffee machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220572046U true CN220572046U (en) | 2024-03-12 |
Family
ID=90121097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322107588.8U Active CN220572046U (en) | 2023-08-07 | 2023-08-07 | Bean conveying device of coffee machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220572046U (en) |
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2023
- 2023-08-07 CN CN202322107588.8U patent/CN220572046U/en active Active
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