CN213936259U - Hydrogen reactor power generation device - Google Patents
Hydrogen reactor power generation device Download PDFInfo
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- CN213936259U CN213936259U CN202022894755.4U CN202022894755U CN213936259U CN 213936259 U CN213936259 U CN 213936259U CN 202022894755 U CN202022894755 U CN 202022894755U CN 213936259 U CN213936259 U CN 213936259U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The hydrogen stack power generation device comprises a storage battery body, wherein the storage battery body is uniformly provided with heat dissipation ports, the heat dissipation ports are arranged outside the storage battery body and provided with mounting boxes, one side of each mounting box is in an opening shape, the other side of each mounting box is provided with a ventilation opening, each ventilation opening is externally provided with a heat dissipation box, and the top of each heat dissipation box is provided with a mounting opening. The invention blows air through the cooling fan, thereby entering the arc-shaped cover through the cooling hole, blowing the air from different directions through the cooling hole, and improving the blowing and cooling area; simultaneously helical blade rotates the increase velocity of flow, and in the battery body heat entered into the heat dissipation box, external cold wind entered into the heat dissipation box through strengthening the wind post to with the heat neutralization of battery body, then further improvement radiating effect.
Description
Technical Field
The invention relates to the technical field of hydrogen stack power generation, in particular to a hydrogen stack power generation device.
Background
Automobiles, as a vehicle, play a very important role in modern industrial society. With the increasing of the automobile keeping quantity and the increasing demand of people on new energy automobiles, new energy with longer driving range is widely concerned. The hydrogen fuel cell automobile is a novel green pollution-free automobile, chemical energy generated by hydrogen and oxygen is converted into electric energy through electrode reaction, the energy conversion efficiency is high, and the driving range of the new energy automobile is increased.
The existing hydrogen stack power generation device needs to store electric energy in the power generation process, so that the storage battery is required to store and carry the electric energy, the electric energy conversion can give off heat, the high temperature can cause the local overtemperature phenomenon, the service life of the storage battery is influenced, and the heat dissipation cooling mechanism is required to be adopted to cool the storage battery.
Disclosure of Invention
The present invention is directed to a hydrogen stack power generation device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a hydrogen stack power generation device comprises a storage battery body, wherein heat dissipation ports are uniformly formed in the storage battery body, an installation box is arranged outside the storage battery body at the heat dissipation ports, one side of the installation box is in an opening shape, a ventilation opening is formed in the other side of the installation box, a heat dissipation box is arranged outside the ventilation opening, and an installation opening is formed in the top of the heat dissipation box;
a driving motor is arranged outside the heat dissipation box, an output shaft of the driving motor is provided with a first turbulence shaft, a driving gear is arranged on the first turbulence shaft and is meshed with a driven gear, the driven gear is connected with a second turbulence shaft, spiral blades are arranged on the first turbulence shaft and the second turbulence shaft, a first bevel gear is arranged on the first turbulence shaft and is meshed with a second bevel gear, and the second bevel gear is connected with a first heat dissipation shaft;
a driving belt pulley is arranged on the first heat dissipation shaft, the driving belt pulley is connected with a driven belt pulley through a belt, the driven belt pulley is connected with a second heat dissipation shaft, and the first heat dissipation shaft and the second heat dissipation shaft are connected with a heat dissipation fan;
the utility model discloses a heat dissipation box, including heat dissipation box roof, fixed establishment, fixed slot, spacing mechanism, fixed establishment and fixed slot, the interior dismantlement formula of installation is equipped with strengthens the wind post, and the bottom symmetry of strengthening the wind post is equipped with the reference column, be equipped with fixed establishment in the cavity of heat dissipation box roof, fixed establishment sets up with the fixed slot fixed joint of strengthening the wind post bottom, the outer roof of heat dissipation box is equipped with stop gear, be equipped with spacing mouthful on the reference column, the outer roof of heat dissipation box is equipped with the coordination mouth, and spacing mouthful, coordination mouth correspond the setting.
Preferably, the heat dissipation hole is provided with an arc cover in the storage battery body, and the arc cover is provided with the heat dissipation hole.
Preferably, a fixed vertical column is arranged in the mounting box, and the first heat dissipation shaft and the second heat dissipation shaft penetrate through the fixed vertical column.
Preferably, strengthen the wind post and include first wind post, second wind post and third wind post, first wind post, second wind post and third wind post all are hollow structure, and the internal diameter from the top down reduces in proper order.
Preferably, the inner diameter of the first wind column is 2 times that of the second wind column, and the inner diameter of the second wind column is 2 times that of the third wind column.
Preferably, fixed establishment includes fixed rotating shaft, and fixed rotating shaft one end is rotated with the cavity of heat dissipation box roof and is connected the setting, and the other end is connected with positive reverse motor, and fixed rotating shaft is last to be equipped with first screw thread region, second screw thread region, and first screw thread region, the regional threaded connection of second screw thread have a silk piece, and the silk piece is connected with the removal post, removes the bottom of the column portion and is equipped with fixture block, fixture block and fixed slot fixed joint.
Preferably, the silk piece is connected with spacing slide bar, and the limiting plate that heat dissipation box roof cavity was equipped with is equipped with the spacing groove in the limiting plate, and spacing slide bar slides in the spacing groove and sets up.
Preferably, stop gear includes the spacing case, is equipped with the screw rod in the spacing case, is equipped with driven bevel gear on the screw rod, driven bevel gear has the initiative bevel gear meshing, the initiative bevel gear is connected with the initiative bull stick, the initiative bull stick passes the spacing case and is connected with the rotation piece, be equipped with the thread piece on the screw rod, thread piece bottom is equipped with trapezoidal seat, trapezoidal seat lower part is equipped with the spout slide, it has the removal pulley to slide in the spout slide, it is equipped with the lifter to remove the pulley bottom, the lifter bottom is connected with the lift post, lift post one end passes the removal rectangle mouth of spacing case, be connected with spacing kelly, spacing kelly corresponds spacing setting with spacing mouth, the coordination mouth.
Preferably, be equipped with the stable groove in the spacing case, the lift post slides with the stable groove and sets up, and connects through reset spring.
Preferably, the top wall is equipped with the auxiliary tank in the spacing case, and the auxiliary tank slides and is equipped with the auxiliary rod, and the auxiliary rod is connected with the screw thread piece.
Compared with the prior art, the invention has the beneficial effects that
(1) According to the invention, a driving motor is started, a first flow disturbing shaft rotates to drive a driving gear to rotate, the driving gear is engaged with a driven gear, the driven gear rotates, a second flow disturbing shaft rotates, and a helical blade rotates; the first bevel gear rotates to drive the second bevel gear to rotate, then the first radiating shaft rotates, the driving belt pulley is connected with the driven belt pulley through a belt, the driven belt pulley rotates, the second radiating shaft rotates, and then the radiating fan rotates; the air is blown by the cooling fan, so that the air enters the arc-shaped cover through the cooling hole, and the air is blown out from different directions through the cooling hole, so that the blowing and cooling area is increased; simultaneously helical blade rotates the increase velocity of flow, and in the battery body heat entered into the heat dissipation box, external cold wind entered into the heat dissipation box through strengthening the wind post to with the heat neutralization of battery body, then further improvement radiating effect.
(2) The inner diameter of the first wind column is twice that of the second wind column, and the inner diameter of the second wind column is twice that of the third wind column; the internal diameter through first wind post, second wind post and third wind post reduces gradually, then the velocity of flow crescent, and pressure from the top down sharply reduces, then strengthens the entering of external cold air, has improved the radiating effect.
(3) Starting a positive and negative rotation motor, rotating a fixed rotating shaft, rotating a first thread area and a second thread area, moving a screw block in the first thread area and the second thread area, and further driving a moving column to move, so that a fixed clamping block is fixedly clamped with a fixed groove, and the reinforced wind column is preliminarily limited and fixed; the rotation rotates the piece, and the initiative bull stick rotates, drives the rotation of drive bevel gear, and then driven bevel gear rotates, and the screw rod rotates, is equipped with the thread piece on the screw rod, then drives trapezoidal seat and removes, slides in the spout slide and is equipped with the removal pulley to drive the removal pulley and move down, and then drive spacing kelly and move down, thereby will strengthen the further fixed of wind post, be convenient for to the fixed mounting and the dismantlement of strengthening the wind post.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the principle structure of the rotation of the helical blade of the present invention;
FIG. 3 is a schematic perspective view of the reinforced wind post according to the present invention;
FIG. 4 is an enlarged schematic view of FIG. 1 at A;
FIG. 5 is a schematic structural view of the fixing mechanism of the present invention;
fig. 6 is a schematic structural view of the limiting mechanism of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, in an embodiment of the present invention, a hydrogen stack power generation apparatus includes a battery body 1, where the battery body 1 is uniformly provided with heat dissipation ports 2, the heat dissipation ports 2 are provided with a mounting box 5 outside the battery body 1, one side of the mounting box 5 is open, the other side of the mounting box is provided with a ventilation opening 6, a heat dissipation box 7 is provided outside the ventilation opening 6, and the top of the heat dissipation box 7 is provided with a mounting opening 8;
a driving motor 10 is arranged outside the heat dissipation box 7, an output shaft of the driving motor 10 is provided with a first flow disturbing shaft 11, a driving gear 12 is arranged on the first flow disturbing shaft 11, the driving gear 12 is meshed with a driven gear 13, the driven gear 13 is connected with a second flow disturbing shaft 14, helical blades 15 are arranged on the first flow disturbing shaft 11 and the second flow disturbing shaft 14, a first bevel gear 16 is arranged on the first flow disturbing shaft 11, a second bevel gear 17 is meshed with the first bevel gear 16, and the second bevel gear 17 is connected with a first heat dissipation shaft 18;
a driving belt pulley 19 is arranged on the first heat dissipation shaft 18, the driving belt pulley 19 is connected with a driven belt pulley 21 through a belt 20, the driven belt pulley 21 is connected with a second heat dissipation shaft 23, and the first heat dissipation shaft 18 and the second heat dissipation shaft 23 are connected with a heat dissipation fan 24;
the utility model discloses a heat dissipation box, including installing mouth 8, fixed mechanism 26, fixed slot 27, fixed clamping, spacing mouth 29, the outer wall that pushes up of heat dissipation box 7 is equipped with spacing mouth 29, and spacing mouth 29, spacing mouth 30 correspond the setting, strengthen the bottom symmetry of wind post 9 and be equipped with the reference column in installing mouth 8, be equipped with fixed mechanism 26 in the cavity of heat dissipation box 7 roof, fixed mechanism 26 and the fixed clamping setting of fixed slot 27 of strengthening the wind post 9 bottom.
Starting a driving motor 10, enabling a first flow disturbing shaft 11 to rotate to drive a driving gear 12 to rotate, enabling the driving gear 12 to be meshed with a driven gear 13, enabling the driven gear 13 to rotate, enabling a second flow disturbing shaft 14 to rotate, and enabling a spiral blade 15 to rotate; the first bevel gear 16 rotates to drive the second bevel gear 17 to rotate, then the first heat dissipation shaft 18 rotates, the driving belt pulley 19 is connected with a driven belt pulley 21 through a belt 20, the driven belt pulley 21 rotates, the second heat dissipation shaft 23 rotates, and then the heat dissipation fan 24 rotates;
the heat dissipation hole 2 of the embodiment is positioned in the storage battery body 1 and is internally provided with an arc-shaped cover 3, and the arc-shaped cover 3 is provided with a heat dissipation hole 4;
the invention blows air through the cooling fan 24, thereby entering the arc-shaped cover 3 through the heat dissipation port 2, blowing the air from different directions through the heat dissipation hole 4, and improving the air blowing and heat dissipation area; simultaneously helical blade 15 rotates the increase velocity of flow, and in battery body 1 heat entered into heat dissipation box 7, external cold wind entered into heat dissipation box 7 through strengthening wind post 9 in to with the heat neutralization of battery body 1, then further improvement radiating effect.
The mounting box 5 of this embodiment is provided with a fixed vertical post 25, and the first heat dissipation shaft 18 and the second heat dissipation shaft 23 pass through the fixed vertical post 25, so that the stability of the rotation of the first heat dissipation shaft 18 and the second heat dissipation shaft 23 is improved.
The reinforced wind post 9 of the embodiment comprises a first wind post 91, a second wind post 92 and a third wind post 93, wherein the first wind post 91, the second wind post 92 and the third wind post 93 are all hollow structures, and the inner diameter is reduced from top to bottom in sequence.
The inner diameter of the first wind post 91 of the present embodiment is 2 times that of the second wind post 92, and the inner diameter of the second wind post 92 is 2 times that of the third wind post 93; the inner diameters of the first air column 91, the second air column 92 and the third air column 93 are gradually reduced, the flow rate is gradually increased, the pressure intensity is suddenly reduced from top to bottom, the outside cold air is further enhanced, and the heat dissipation effect is improved.
The fixing mechanism 26 of this embodiment includes a fixed rotating shaft 261, one end of the fixed rotating shaft 261 is rotatably connected to the cavity of the top wall of the heat dissipation box 7, the other end is connected to the forward and backward rotation motor 262, the fixed rotating shaft 261 is provided with a first threaded area 263 and a second threaded area 264, the first threaded area 263 and the second threaded area 264 are in threaded connection with a screw block 265, the screw block 265 is connected with a moving column 266, the bottom end of the moving column 266 is provided with a fixing fixture 267, and the fixing fixture 267 is fixedly clamped with the fixing groove 27;
the positive and negative rotation motor 262 is started, the fixed rotating shaft 261 rotates, the first threaded area 263 and the second threaded area 264 rotate, the screw block 265 moves in the first threaded area 263 and the second threaded area 264, and then the moving column 266 is driven to move, so that the fixed clamping block 267 is fixedly clamped with the fixed groove 27, and the reinforced wind column 9 is initially limited and fixed;
the wire block 265 of the embodiment is connected with a limiting slide rod 268, a limiting plate 269 is arranged in a cavity of the top wall of the heat dissipation box 7, a limiting groove 2610 is arranged in the limiting plate 269, and the limiting slide rod 268 is arranged in the limiting groove 2610 in a sliding manner; the stability of the movement of the wire block 265 can be improved by the sliding of the limit slide bar 268 in the limit groove 2610.
The limiting mechanism 28 of this embodiment includes a limiting box 281, a screw 282 is disposed in the limiting box 281, a driven bevel gear 283 is disposed on the screw 282, the driven bevel gear 283 is engaged with a driving bevel gear 284, the driving bevel gear 284 is connected with a driving rotating rod 285, the driving rotating rod 285 passes through the limiting box 281 and is connected with a rotating handle block 286, a thread block 287 is disposed on the screw 282, a trapezoidal seat 288 is disposed at the bottom of the thread block 287, a chute slide 289 is disposed at the lower portion of the trapezoidal seat 288, a moving pulley 2810 is slidably disposed in the chute slide 289, a lifting rod 2811 is disposed at the bottom end of the moving pulley 2810, a lifting column 2812 is connected at the bottom end of the lifting rod 2811, one end of the lifting column 2812 passes through a moving rectangular opening 2813 of the limiting box 281 and is connected with a limiting rod 2814, and the limiting rod 2814 corresponds to the limiting opening 29 and the coordination opening 30 in limiting arrangement.
The rotating handle block 286 rotates, the driving rotating rod 285 rotates to drive the driving bevel gear 284 to rotate, the driven bevel gear 283 rotates, the screw rod 282 is provided with the thread block 287, the trapezoidal seat 288 is driven to move, the sliding groove slide 289 is internally provided with the movable pulley 2810 in a sliding mode, the movable pulley 2810 is driven to move downwards, the limiting clamping rod 2814 is driven to move downwards, and therefore the reinforced wind column 9 is further fixed.
In the present embodiment, a stable groove 2815 is provided in the limit box 281, and the lifting column 2812 is slidably disposed in the stable groove 2815 and connected to the return spring 2816, so that the stability of the device in moving the structure can be improved by the return spring 2816.
In the embodiment, an auxiliary groove 2817 is formed in the inner top wall of the limit box 281, an auxiliary rod 2818 is slidably arranged in the auxiliary groove 2817, and the auxiliary rod 2818 is connected with the thread block 287. The thread block 287 is limited, and the movement stability of the thread block 287 is improved.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A hydrogen stack power generation device comprises a storage battery body (1), and is characterized in that heat dissipation openings (2) are uniformly formed in the storage battery body (1), a mounting box (5) is arranged outside the storage battery body (1) through the heat dissipation openings (2), one side of the mounting box (5) is open, a ventilation opening (6) is formed in the other side of the mounting box, a heat dissipation box (7) is arranged outside the ventilation opening (6), and a mounting opening (8) is formed in the top of the heat dissipation box (7);
a driving motor (10) is arranged outside the heat dissipation box (7), an output shaft of the driving motor (10) is provided with a first flow disturbing shaft (11), a driving gear (12) is arranged on the first flow disturbing shaft (11), the driving gear (12) is meshed with a driven gear (13), the driven gear (13) is connected with a second flow disturbing shaft (14), the first flow disturbing shaft (11) and the second flow disturbing shaft (14) are provided with spiral blades (15), the first flow disturbing shaft (11) is provided with a first bevel gear (16), the first bevel gear (16) is meshed with a second bevel gear (17), and the second bevel gear (17) is connected with a first heat dissipation shaft (18);
a driving belt pulley (19) is arranged on the first heat dissipation shaft (18), the driving belt pulley (19) is connected with a driven belt pulley (21) through a belt (20), the driven belt pulley (21) is connected with a second heat dissipation shaft (23), and the first heat dissipation shaft (18) and the second heat dissipation shaft (23) are connected with a heat dissipation fan (24);
the utility model discloses a heat dissipation box, including installing port (8), fixed slot (27), fixed mechanism (26), fixed slot (29) fixed joint, the interior dismantlement formula of installing port (8) is equipped with and strengthens wind post (9), and the bottom symmetry of strengthening wind post (9) is equipped with the reference column, be equipped with fixed mechanism (26) in the cavity of heat dissipation box (7) roof, fixed mechanism (26) and fixed slot (27) fixed joint setting of strengthening wind post (9) bottom, the outer wall of pushing up of heat dissipation box (7) is equipped with stop gear (28), be equipped with spacing mouthful (29) on the reference column, the outer wall of pushing up of heat dissipation box (7) is equipped with and joins in marriage a position mouthful (30), and spacing mouthful (29), join in marriage a position mouthful (30) and correspond the setting.
2. The hydrogen stack power generation device according to claim 1, wherein the heat dissipation port (2) is arranged in the storage battery body (1) and is provided with an arc-shaped cover (3), and the arc-shaped cover (3) is provided with heat dissipation holes (4).
3. The hydrogen stack power generation device according to claim 1, wherein a fixed vertical column (25) is arranged in the mounting box (5), and the first heat dissipation shaft (18) and the second heat dissipation shaft (23) are arranged to penetrate through the fixed vertical column (25).
4. The hydrogen stack power generation device according to claim 1, wherein the reinforced wind columns (9) comprise a first wind column (91), a second wind column (92) and a third wind column (93), the first wind column (91), the second wind column (92) and the third wind column (93) are all hollow structures, and the inner diameters of the first wind column, the second wind column and the third wind column are sequentially reduced from top to bottom.
5. The hydrogen stack power plant according to claim 4, characterized in that the inner diameter of the first wind column (91) is 2 times that of the second wind column (92), and the inner diameter of the second wind column (92) is 2 times that of the third wind column (93).
6. The hydrogen stack power generation device according to claim 1, wherein the fixing mechanism (26) comprises a fixed rotating shaft (261), one end of the fixed rotating shaft (261) is rotatably connected with a cavity on the top wall of the heat dissipation box (7), the other end of the fixed rotating shaft is connected with a forward and reverse rotating motor (262), the fixed rotating shaft (261) is provided with a first threaded area (263) and a second threaded area (264), the first threaded area (263) and the second threaded area (264) are in threaded connection with a thread block (265), the thread block (265) is connected with a movable column (266), the bottom end of the movable column (266) is provided with a fixed clamping block (267), and the fixed clamping block (267) is fixedly clamped with the fixed groove (27).
7. The hydrogen stack power generation device according to claim 6, wherein the wire block (265) is connected with a limiting slide rod (268), a limiting plate (269) is arranged in the cavity of the top wall of the heat dissipation box (7), a limiting groove (2610) is arranged in the limiting plate (269), and the limiting slide rod (268) is arranged in the limiting groove (2610) in a sliding manner.
8. The hydrogen stack power generation device according to claim 1, wherein the limiting mechanism (28) comprises a limiting box (281), a screw (282) is arranged in the limiting box (281), a driven bevel gear (283) is arranged on the screw (282), the driven bevel gear (283) is meshed with a driving bevel gear (284), the driving bevel gear (284) is connected with a driving rotating rod (285), the driving rotating rod (285) penetrates through the limiting box (281) to be connected with a rotating handle block (286), a thread block (287) is arranged on the screw (282), a trapezoidal seat (288) is arranged at the bottom of the thread block (287), a chute slide way (289) is arranged at the lower part of the trapezoidal seat (288), a movable pulley (2810) is arranged in the chute slide way (289), a lifting rod (2811) is arranged at the bottom end of the movable pulley (2810), a lifting column (2812) is connected at the bottom end of the lifting rod (2811), one end of the lifting column (2812) penetrates through a movable rectangular opening (2813) of the limiting box (281), a limiting clamping rod (2814) is connected, and the limiting clamping rod (2814) is correspondingly limited with the limiting port (29) and the matching port (30).
9. The hydrogen stack power generation device according to claim 8, characterized in that a stable groove (2815) is arranged in the limit box (281), and the lifting column (2812) is slidably arranged in the stable groove (2815) and connected with the stable groove (2816) through a return spring (2816).
10. The hydrogen stack power generation device according to claim 8, characterized in that an auxiliary groove (2817) is formed in the inner top wall of the limiting box (281), an auxiliary rod (2818) is slidably arranged in the auxiliary groove (2817), and the auxiliary rod (2818) is connected with the thread block (287).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022894755.4U CN213936259U (en) | 2020-12-02 | 2020-12-02 | Hydrogen reactor power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022894755.4U CN213936259U (en) | 2020-12-02 | 2020-12-02 | Hydrogen reactor power generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213936259U true CN213936259U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022894755.4U Active CN213936259U (en) | 2020-12-02 | 2020-12-02 | Hydrogen reactor power generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213936259U (en) |
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2020
- 2020-12-02 CN CN202022894755.4U patent/CN213936259U/en active Active
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