CN219055959U - Battery package box mounting point reinforcing structure, battery package box and vehicle body structure - Google Patents
Battery package box mounting point reinforcing structure, battery package box and vehicle body structure Download PDFInfo
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- CN219055959U CN219055959U CN202223427072.3U CN202223427072U CN219055959U CN 219055959 U CN219055959 U CN 219055959U CN 202223427072 U CN202223427072 U CN 202223427072U CN 219055959 U CN219055959 U CN 219055959U
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- side beam
- hole
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- mounting point
- reinforcing structure
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 58
- 239000003292 glue Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000002390 adhesive tape Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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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
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery pack box mounting point reinforcing structure which is used for being mounted on a box side beam and comprises a supporting gasket, a flange sleeve and a fastener. The support gasket is fixed on the side beam of the box body and positioned at one side of the side beam; the flange sleeve is fixed in the side beam of the box body and is arranged at the other side of the side beam penetrating out of the box body; the fastener sequentially passes through the flange sleeve, the box side beam and the supporting gasket and is fixed on the car body shell; when the side beam of the box body is fixed on the body shell through the fastener, the supporting gasket is abutted against the body shell. Therefore, the flange sleeve is arranged in the side beam of the box body, so that the structural strength of the mounting point is increased, and meanwhile, the processing steps are simplified; through set up the support gasket on the box boundary beam, after adopting fastener and automobile body casing fixed connection, this support gasket compresses tightly the butt mutually with the automobile body casing for both connect more fastening. In addition, the utility model also provides a battery pack box body and a vehicle body structure with the battery pack box body.
Description
Technical Field
The utility model relates to the field of new energy electric automobiles, in particular to a battery pack box body mounting point reinforcing structure, a battery pack box body and a vehicle body structure.
Background
The battery pack is a core part of the electric vehicle and plays a key role in the cruising of the electric vehicle. The battery pack is generally mounted in a battery pack case under the vehicle body case, and the battery pack case is connected with the vehicle body case through a mounting structure. Patent publication number CN113471607a discloses a battery box, including lower box, lower box includes the frame, and the frame includes frame and a plurality of stiffening beams that link to each other with the frame, and two at least mount points are located stiffening beam and are located the middle part of frame. In addition, the frame is also provided with a supporting beam for supporting the mounting point, the mounting point comprises a connecting column which is integrally formed with the reinforcing beam and the supporting beam, a connecting hole is formed in the connecting column, and the connecting hole is used for being connected with a mounting part arranged on the vehicle body. Therefore, the reinforcement of the mounting points of the traditional battery pack box body mostly adopts reinforcement positions at the mounting points to carry out thickening treatment so as to strengthen the structural strength of the mounting points, and the reinforcement mode not only can increase the thickness of the reinforcement beam and the thickness of the support beam and increase the production and manufacturing cost, but also greatly increases the machining time, thereby reducing the machining efficiency.
Therefore, there is an urgent need to provide a battery pack box mounting point reinforcing structure with simple structure, reliable strength, less material consumption and less processing amount.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a battery pack box body mounting point reinforcing structure which is reliable in strength, small in material consumption and small in processing amount, and a battery pack box body and a vehicle body structure with the battery pack box body mounting point reinforcing structure.
The utility model adopts the technical proposal for solving the problems that:
a battery package box mount point reinforcing structure for install on box boundary beam, include:
the support gasket is fixed on the side beam of the box body and positioned at one side of the side beam;
the flange sleeve is fixed in the box side beam and penetrates through the other side of the box side beam;
the fastener sequentially passes through the flange sleeve, the box side beam and the support gasket and is fixed on the car body shell;
when the box side beam is fixed on the car body shell through the bolt, the supporting gasket is abutted with the car body shell.
Further, a first through hole is formed in the support gasket, a second through hole is formed in the flange sleeve, and a third through hole which is respectively communicated with the first through hole and the second through hole is formed in the side beam of the box body;
the fastener sequentially passes through the second through hole, the third through hole and the first through hole and is fixed on the vehicle body shell.
Further, the first through hole, the second through hole and the third through hole have the same pore size.
Further, a sinking groove which is communicated with the second through hole and forms a stepped hole is formed in the flange sleeve; the fastener is a bolt, the bolt sequentially passes through the sinking groove and the second through hole, and the nut of the bolt abuts against the end face of the sinking groove.
Further, a glue groove is further formed in the support gasket, an adhesive tape is arranged in the glue groove, and the support gasket is glued to the side beam of the box body through the adhesive tape.
Further, the section of the glue groove is trapezoid.
Further, the tank side beam is further provided with a containing groove, the flange sleeve comprises a flange surface and a sleeve body arranged on the flange surface, and the sleeve body is arranged in the containing groove, and the end face of the flange surface is abutted to the tank side beam and welded and fixed.
Further, the support gasket and the flange sleeve are made of aluminum materials.
In addition, the second aspect of the utility model also provides a battery pack box body, which comprises a lower box body frame, wherein the lower box body frame comprises two box body side beams which are symmetrically arranged and a plurality of box body frames which are respectively connected with the two box body side beams and are enclosed into a closed-loop structure;
the side beam of the box body is provided with a plurality of mounting point reinforcing structures along the length direction.
Further, the lower box frame further comprises a plurality of stiffening beams, and the stiffening beams are arranged at intervals and are respectively connected to opposite side walls of the two box side beams.
Further, the box side beams, the box side frames and the reinforcing beams are all aluminum extrusion profiles.
In addition, the third aspect of the utility model also provides a vehicle body structure, which comprises a vehicle body shell and the battery pack box body, wherein a press-riveting nut is arranged in the vehicle body shell;
the fastener sequentially passes through the flange sleeve, the tank side beam and the support gasket and is fixedly connected with the press riveting nut through threads.
In summary, the battery pack box mounting point reinforcing structure, the battery pack box and the vehicle body structure provided by the utility model have the following beneficial effects:
(1) According to the mounting point reinforcing structure, the flange sleeve is arranged in the side beam of the box body, so that the structural strength of the mounting point is increased, the processing steps are simplified, the processing amount is greatly reduced, and the cost is reduced.
(2) According to the mounting point reinforcing structure, the body shell and the battery pack box body are fixed in a connecting mode of bolts and press-riveting nuts, so that the assembly mode between the body shell and the battery pack box body is greatly simplified, and the assembly efficiency is improved.
(3) According to the mounting point reinforcing structure, the supporting gasket is arranged on the side beam of the box body, and after the bolts are in threaded connection with the press riveting nuts on the box body shell, the end faces of the supporting gasket are pressed and abutted with the box body shell, so that the connection between the box body shell and the box body of the battery pack is more firm, and the connection stability between the box body shell and the box body of the battery pack is improved.
(4) Compared with the traditional mounting point reinforcing structure, the mounting point reinforcing structure disclosed by the utility model has the advantages that the rest parts of the mounting point reinforcing structure are not required to be higher than the lower box body frame except the bolts, so that the space of the battery box body is released, and the space utilization rate is improved.
Drawings
FIG. 1 is an exploded view of a mounting point reinforcing structure on a side sill of a case according to the present utility model;
FIG. 2 is a schematic cross-sectional view of a mounting point reinforcing structure on a side sill of a case according to the present utility model;
FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;
FIG. 4 is a schematic view of the structure of the lower case frame in the battery pack case of the present utility model;
FIG. 5 is a schematic cross-sectional view of the lower housing frame of the present utility model assembled with the body shell;
fig. 6 is an enlarged partial schematic view of the portion B in fig. 5.
Wherein the reference numerals have the following meanings:
1. a support pad; 11. a first through hole; 12. a glue groove; 2. a flange sleeve; 21. a second through hole; 22. sinking grooves; 23. a flange surface; 24. a sleeve body; 3. a bolt; 31. a screw cap; 32. a stud; 4. a lower case frame; 41. a tank side beam; 411. a third through hole; 412. a receiving groove; 42. a frame of the box body; 43. a stiffening beam; 5. a vehicle body case; 6. and (5) riveting a nut.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Example 1
Referring to fig. 1-3, the present utility model firstly provides a battery pack case mounting point reinforcing structure for mounting on a case side beam 41, which comprises a support gasket 1, a flange sleeve 2 and a fastener, wherein the support gasket 1 is fixed on the case side beam 41 and is positioned at the top of the case side beam 41; the flange sleeve 2 is fixed in the tank boundary beam 41 and penetrates out of the bottom of the tank boundary beam 41; the fastening piece is a bolt 3, and the bolt 3 sequentially passes through the flange sleeve 2, the tank side beam 41 and the support gasket 1 and is fixed on the vehicle body shell 5; when the case side beam 41 is fixed to the vehicle body case 5 by the bolts 3, the upper end surface of the support pad 1 is pressed against the bottom surface of the vehicle body case 5.
Therefore, by arranging the flange sleeve 2 in the side beam 41 of the box body, the structural strength of the mounting point is increased, and meanwhile, the processing steps are greatly simplified, so that the processing amount is greatly reduced, and the cost is further reduced; through set up support pad 1 on box boundary beam 41, after adopting bolt 3 to be connected box boundary beam 41 and automobile body casing 5 fixed, the terminal surface and the automobile body casing 5 looks butt of this support pad 1 compress tightly for the connection between automobile body casing 5 and the battery package box is more fastened, thereby has improved the connection steadiness between the two.
In this embodiment, the support pad 1 and the flange sleeve 2 are made of aluminum.
Specifically, referring to fig. 2, the support gasket 1 is provided with a first through hole 11, the flange sleeve 2 is provided with a second through hole 21, and the side beam 41 of the box body is provided with a third through hole 411 located between and respectively communicated with the first through hole 11 and the second through hole 21. Preferably, the first through hole 11, the second through hole 21 and the third through hole 411 have the same pore size. The bolt 3 passes through the second through hole 21, the third through hole 411, and the first through hole 11 in this order and is fixed to the vehicle body case 5.
Referring to fig. 2 again, the bolt 3 includes a stud 32 and a nut 31 disposed on the stud 32, the flange sleeve 2 is further provided with a countersink 22 communicating with the second through hole 21 and forming a stepped hole, the stud 32 of the bolt 3 sequentially passes through the countersink 22, the second through hole 21, the third through hole 411 and the first through hole 11 and is fixed on the vehicle body housing 5, and the nut 31 of the bolt 3 abuts against an end face of the countersink 22.
Referring to fig. 3, the supporting pad 1 is further provided with a circular glue groove 12, and a tape (not shown in the figure) is disposed in the glue groove 12, and the supporting pad 1 is glued on the top of the side beam 41 of the box body by the tape; preferably, the cross section of the adhesive groove 12 is trapezoidal, so that a certain deformation space is provided for the adhesive tape, and the adhesive tape can be firmly adhered to the side beam of the box body.
Of course, in other embodiments, other fixing adhesives may be used instead of the adhesive tape, and the cross section of the adhesive groove 12 may be square or other shapes, which is not limited herein.
Therefore, the supporting gasket 1 is fixed on the side beam 41 of the box body in an adhesive manner, and the installation process is simple and convenient, so that the assembly efficiency is improved.
Referring to fig. 2 again, the tank side beam 41 is further provided with a receiving groove 412 communicating with the third through hole 411, the flange sleeve 2 includes a flange surface 23 and a sleeve body 24 disposed on the flange surface 23, the sleeve body 24 is disposed in the receiving groove 412, the end surface of the sleeve body 24 is attached to the bottom surface of the receiving groove 412, the flange surface 23 passes through the tank side beam 41, the end surface of the flange surface 23 is abutted to the bottom surface of the tank side beam 41, and the flange sleeve 2 is fixed to the tank side beam 41 by welding the end surface of the flange surface 23 to the bottom surface of the tank side beam 41.
Thereby, the sleeve body 24 of the flange sleeve 2 is arranged in the accommodating groove 412 of the box side beam 41, the flange surface 23 of the flange sleeve 2 penetrates out of the bottom of the box side beam 41, and the flange surface 23 does not occupy too much bottom space of the box side beam 41; also, the support pad 1 does not occupy too much of the top space of the box side rail 41; therefore, the mounting point reinforcing structure does not occupy too much mounting space at the top and bottom of the box side beam 41, so that the space of the battery box is released, and the space utilization rate is greatly improved.
Example two
Referring to fig. 4, the present utility model further provides a battery pack case, which includes a lower case and an upper case (not shown in the drawings) connected to the lower case, the lower case including a lower case frame 4, the lower case frame 4 including two case side beams 41 symmetrically arranged and a plurality of case side frames 42 respectively connected to the two case side beams 41 and enclosing a closed loop structure. Preferably, the two tank side beams 41 and the plurality of tank side frames 42 are all fixed by welding to realize connection; the plurality of mounting point reinforcing structures according to the first embodiment are uniformly arranged on the case side beam 41 along the length direction thereof, and the plurality of mounting point reinforcing structures on the case side beam 41 are in one-to-one correspondence and symmetrical arrangement with the plurality of mounting point reinforcing structures on the other case side beam 41.
Therefore, the plurality of mounting point reinforcing structures are arranged on the two symmetrically arranged box side beams 41 in a separated mode, and the plurality of mounting point reinforcing structures on one box side beam 41 are arranged in one-to-one correspondence with the plurality of mounting point reinforcing structures on the other box side beam 41, so that the load born by the mounting points is uniform, the load bearing capacity of the mounting points is enhanced, and the mounting strength of the whole battery pack is enhanced.
Further, the lower case frame 4 further includes a plurality of reinforcing beams 43, the plurality of reinforcing beams 43 are disposed in an area defined by the closed-loop structure, two ends of the plurality of reinforcing beams 43 are respectively connected to opposite side walls of the two case side beams 41, and the plurality of reinforcing beams 43 are arranged at intervals.
In this embodiment, the case side beam 41, the case frame 42, and the reinforcing beam 43 are all aluminum extruded profiles.
In addition, the mounting point reinforcing structure provided on the case side beam 41 is not higher than the lower case frame 4 except the bolts 3, thereby releasing the space of the battery case and improving the space utilization.
Example III
Referring to fig. 5-6, the present utility model further provides a vehicle body structure, which includes a vehicle body housing 5 and a battery pack case in the second embodiment, wherein a press rivet nut 6 is disposed in the vehicle body housing 5, and a bolt 3 in the mounting point reinforcing structure sequentially passes through the flange sleeve 2, the case side beam 41 and the support gasket 1 and is in threaded connection with the press rivet nut 6 to realize connection between the battery pack case and the vehicle body housing 5.
Therefore, the automobile body shell 5 and the battery pack box body are fixed in a threaded connection mode of the bolt 3 and the press riveting nut 6, the assembly mode between the automobile body shell and the battery pack box body is greatly simplified, and the assembly efficiency is improved.
In summary, the battery pack box mounting point reinforcing structure, the battery pack box and the vehicle body structure provided by the utility model have the following beneficial effects:
according to the mounting point reinforcing structure, the flange sleeve 2 is arranged in the side beam 41 of the box body, so that the structural strength of the mounting point is increased, the processing steps are simplified, the processing amount is greatly reduced, and the cost is reduced.
The mounting point reinforcing structure is characterized in that the mounting point reinforcing structure is formed by connecting the mounting point reinforcing structure with the mounting point reinforcing structure, and the mounting point reinforcing structure is characterized in that the mounting point reinforcing structure is formed by connecting the mounting point reinforcing structure with the mounting point reinforcing structure.
According to the mounting point reinforcing structure, the supporting gasket 1 is arranged on the side beam 41 of the box body, and after the bolts 3 are connected and fixed with the press riveting nuts 6 on the box body shell 5, the end faces of the supporting gasket 1 are pressed and abutted with the box body shell 5, so that the connection between the box body shell 5 and the battery pack box body is more firm, and the connection stability between the box body shell and the battery pack box body is improved.
And fourthly, compared with the traditional mounting point reinforcing structure, the mounting point reinforcing structure disclosed by the utility model has the advantages that the rest parts are not required to be higher than the lower box body frame 4 except the bolts 3, so that the space of a battery box body is released, and the space utilization rate is improved.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element.
It should be understood that the terms "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, in the description of the present utility model, the meaning of "a plurality", "a number" is two or more, unless explicitly defined otherwise.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (12)
1. The utility model provides a battery package box mount point reinforcing structure for install on box boundary beam (41), its characterized in that includes:
a support pad (1) fixed to the tank side beam (41) and located at one side thereof;
the flange sleeve (2) is fixed in the box side beam (41) and penetrates out of the other side of the box side beam (41);
the fastening piece sequentially passes through the flange sleeve (2), the box side beam (41) and the support gasket (1) and is fixed on the vehicle body shell (5);
when the box side beam (41) is fixed on the car body shell (5) through the fastener, the support gasket (1) is abutted with the car body shell (5).
2. The mounting point reinforcing structure according to claim 1, wherein the support gasket (1) is provided with a first through hole (11), the flange sleeve (2) is provided with a second through hole (21), and the tank side beam (41) is provided with a third through hole (411) which is respectively communicated with the first through hole (11) and the second through hole (21);
the fastener sequentially passes through the second through hole (21), the third through hole (411) and the first through hole (11) and is fixed on the vehicle body shell (5).
3. Mounting point reinforcing structure according to claim 2, characterized in that the pore sizes of the first through hole (11), the second through hole (21) and the third through hole (411) are the same.
4. The mounting point reinforcing structure according to claim 2, characterized in that the flange sleeve (2) is also provided with a sinking groove (22) which is communicated with the second through hole (21) and forms a stepped hole; the fastening piece is a bolt (3), the bolt (3) sequentially passes through the sinking groove (22) and the second through hole (21), and a nut (31) of the bolt (3) abuts against the end face of the sinking groove (22).
5. The mounting point reinforcing structure according to any one of claims 1-4, wherein a glue groove (12) is further formed in the support gasket (1), an adhesive piece is arranged in the glue groove (12), and the support gasket (1) is adhered to the tank side beam (41) through the adhesive piece.
6. The mounting point reinforcing structure according to claim 5, wherein the cross section of the glue groove (12) is trapezoidal.
7. The mounting point reinforcing structure according to any one of claims 1-4, wherein the tank side beam (41) is further provided with a containing groove (412), the flange sleeve (2) comprises a flange surface (23) and a sleeve body (24) arranged on the flange surface (23), the sleeve body (24) is arranged in the containing groove (412), and the end face of the flange surface (23) is abutted against the tank side beam (41) and welded and fixed.
8. Mounting point reinforcing structure according to any of claims 1-4, characterized in that the support gasket (1) and the flange sleeve (2) are both made of aluminium material.
9. The battery pack box is characterized by comprising a lower box frame (4), wherein the lower box frame (4) comprises two box side beams (41) which are symmetrically arranged and a plurality of box side frames (42) which are respectively connected with the two box side beams (41) and are enclosed into a closed-loop structure;
a plurality of mounting point reinforcing structures as set forth in any one of claims 1 to 8 are arranged on the tank side beam (41) along the length direction thereof.
10. The battery pack case according to claim 9, wherein the lower case frame (4) further includes a plurality of reinforcement beams (43), and a plurality of the reinforcement beams (43) are arranged at intervals and are respectively connected to opposite side walls of the two case side beams (41).
11. The battery pack case according to claim 10, wherein the case side beams (41), the case frame (42), and the reinforcing beam (43) are all aluminum extruded profiles.
12. A vehicle body structure, characterized by comprising a vehicle body shell (5) and a battery pack case according to any one of claims 9-11, wherein a press-rivet nut (6) is provided in the vehicle body shell (5);
the fastening piece sequentially penetrates through the flange sleeve (2), the tank side beam (41) and the supporting gasket (1) and is fixedly connected with the press riveting nut (6) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223427072.3U CN219055959U (en) | 2022-12-19 | 2022-12-19 | Battery package box mounting point reinforcing structure, battery package box and vehicle body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223427072.3U CN219055959U (en) | 2022-12-19 | 2022-12-19 | Battery package box mounting point reinforcing structure, battery package box and vehicle body structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219055959U true CN219055959U (en) | 2023-05-23 |
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ID=86369137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223427072.3U Active CN219055959U (en) | 2022-12-19 | 2022-12-19 | Battery package box mounting point reinforcing structure, battery package box and vehicle body structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219055959U (en) |
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2022
- 2022-12-19 CN CN202223427072.3U patent/CN219055959U/en active Active
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