CN217952680U - Cabinet base and cabinet air conditioner - Google Patents
Cabinet base and cabinet air conditioner Download PDFInfo
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- CN217952680U CN217952680U CN202221547081.3U CN202221547081U CN217952680U CN 217952680 U CN217952680 U CN 217952680U CN 202221547081 U CN202221547081 U CN 202221547081U CN 217952680 U CN217952680 U CN 217952680U
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Abstract
The utility model provides a cabinet-type air conditioner base and cabinet air conditioner relates to air conditioner technical field, for solving the problem design that the fusant juncture leads to intensity to reduce when moulding plastics of cabinet-type air conditioner base. The cabinet machine base comprises an outer annular wall and a plurality of first radial spokes, wherein one ends of the first radial spokes connected with the outer annular wall are provided with first reinforcing ribs, the first radial spokes and the outer annular wall are connected by the first reinforcing ribs, at least part of adjacent first reinforcing ribs are provided with second reinforcing ribs, and the second reinforcing ribs are fixedly connected with the first reinforcing ribs. The utility model provides a cabinet-type air conditioner base can improve cabinet-type air conditioner base's intensity under the unavoidable condition of the defect of the fusant juncture of in-process because of both sides of moulding plastics.
Description
Technical Field
The utility model relates to an air conditioner technical field particularly, relates to a cabinet-type air conditioner base and cabinet air conditioner.
Background
Generally, a base of a cabinet air conditioner is generally finished by an injection molding process, and in order to increase the injection molding speed, at least two gates are arranged, and plastic melt flowing from the at least two gates flows in a cavity to fill the cavity. Taking a circular base as an example, when plastic melt respectively flowing from two gates symmetrically arranged along a certain diameter flows to a region near the diameter, the plastic melt may be not fused as well as the plastic melt continuously flowing from one gate, and even defects such as air holes may exist. Therefore, the region near the diameter has a problem such as stress concentration, and the strength of the pedestal is reduced, which tends to cause an excessive failure in the drop test.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a cabinet-type air conditioner base to solve the technical problem that the melt juncture leads to intensity to reduce when current cabinet-type air conditioner base is moulded plastics.
The utility model provides a cabinet-type air conditioner base, including outer annular wall and many first radial spokes, many first radial spoke with the one end that outer annular wall connected is equipped with first stiffening rib, first stiffening rib is connected first radial spoke with outer annular wall, at least partial adjacent be equipped with the second stiffening rib between the first stiffening rib, the second stiffening rib with first stiffening rib fixed connection.
The utility model discloses beneficial effect that cabinet-type air conditioner base brought is:
by providing the first reinforcing rib at the intersection of the first radial spoke and the outer annular wall, support can be formed in the area of the included angle at the intersection of the first radial spoke and the outer annular wall, and the connection strength between the first radial spoke and the outer annular wall is improved. And the second reinforcing ribs are arranged among at least part of the first reinforcing ribs, so that the first reinforcing ribs can be supported, and the strength of the base of the cabinet machine is improved under the condition that the defects at the junction of the molten bodies on two sides cannot be avoided in the injection molding process.
In a preferred technical scheme, the cabinet base further comprises a first annular rib, a second radial spoke is arranged between the first annular rib and the outer annular wall, and the second reinforcing rib is fixedly connected with the first reinforcing rib and the second radial spoke.
The other end of the second reinforcing rib is fixedly connected to the second radial spoke, so that the second reinforcing rib can act on the second radial spoke through the other end of the second reinforcing rib, and the strength of the second radial spoke is utilized to bear the load of the second reinforcing rib so as to support the first reinforcing rib.
In a preferred solution, said second reinforcing rib is also fixedly connected to said outer annular wall by means of third radial spokes.
The second reinforcing rib is fixedly connected with the outer annular wall through the third radial spokes, the distance between the local part of the second reinforcing rib and the outer annular wall is limited, and when the second reinforcing rib is stressed, the change degree of the distance between the local part and the outer annular wall is obviously reduced, so that the second reinforcing rib is prevented from being damaged due to the pressure rod stabilizing effect.
In a preferred technical solution, the cabinet base further includes a second annular rib, the second annular rib is located between the first annular rib and the outer annular wall, and the second annular rib is fixedly connected with the second reinforcing rib through a fourth radial spoke.
By fixedly connecting the second reinforcing rib with the second annular rib through the fourth radial spokes, when the second reinforcing rib is stressed, the change degree of the distance between the local part and the second annular rib is obviously reduced, and the load is shared on the second annular rib with higher supporting strength through the fourth radial spokes, so that the second reinforcing rib is prevented from being damaged due to the pressure rod stabilizing effect. In addition, no matter which side of the radial outer side and the radial inner side of the second reinforcing rib is deformed by the approximately middle area of the second reinforcing rib due to the pressure, the third radial spoke or the fourth radial spoke bears the tensile force, and the radial spokes on two sides of the second reinforcing rib are prevented from being damaged and losing the supporting capacity.
In a preferred technical scheme, two second reinforcing ribs are arranged between two adjacent first reinforcing ribs, and the two adjacent second reinforcing ribs are connected to the same second radial spoke.
Two adjacent second reinforcing ribs are connected to the same second radial spoke, the acting force of the second reinforcing ribs on the two sides of the circumferential direction of the cabinet base of the second radial spoke can be delivered as far as possible, the bending moment generated on the second radial spoke is reduced, and therefore the load of the second radial spoke is reduced, and the stability of the second radial spoke is guaranteed as far as possible.
In a preferred embodiment, the second reinforcing rib is arc-shaped, the opening of the arc-shape faces the outer annular wall, and the third radial spoke is perpendicular to the second reinforcing rib.
The third radial spoke is perpendicular to the second reinforcing rib, so that the extending direction of the third radial spoke is consistent with the deformation trend direction of the connecting part of the second reinforcing rib, the acting force caused by the deformation trend only stretches or compresses the third radial spoke, no bending moment is generated relative to the connecting part of the third radial spoke and the outer annular wall, and the stability of the third radial spoke is favorably maintained.
In a preferred embodiment, the fourth radial spoke is perpendicular to the second reinforcement rib.
The fourth radial spoke is perpendicular to the second reinforcing rib, so that the extending direction of the fourth radial spoke is consistent with the deformation trend direction of the connecting part of the second reinforcing rib, the acting force caused by the deformation trend only stretches or compresses the fourth radial spoke, no bending moment is generated relative to the connecting part of the fourth radial spoke and the second annular rib, and the stability of the fourth radial spoke is favorably maintained.
In a preferred technical scheme, the first reinforcing rib comprises two arc-shaped sub-reinforcing ribs symmetrically arranged along the first radial spoke, and the second reinforcing rib is connected with the middle parts of the sub-reinforcing ribs.
The second reinforcing rib is connected with the middle part of the sub-reinforcing rib, and the sub-reinforcing rib can be supported at the position, farthest from the two ends, of the sub-reinforcing rib, namely, the position, farthest from the existing supporting position, of the sub-reinforcing rib, where the maximum deformation is generated when the sub-reinforcing rib is under pressure, so that the rigidity of the sub-reinforcing rib is improved, the overall strength of the cabinet base is further improved, and the strength loss caused by the defect of the junction of a molten mass is reduced.
In a preferred technical solution, a part of the second reinforcing ribs are connected to the first reinforcing ribs located in a first region, and the rest of the second reinforcing ribs are connected to the first reinforcing ribs located in a second region, the first region and the second region are symmetrical along a first diameter, a second diameter intersects both the first region and the second region, and the first diameter is perpendicular to the second diameter.
The second reinforcing ribs are arranged in the first area and the second area, so that materials are favorably concentrated at the position where the base of the cabinet machine is favorably strengthened to pass a drop test, the material waste is reduced, and the manufacturing cost is reduced.
A second object of the present invention is to provide a cabinet air conditioner to solve the technical problem of the cabinet base that the melt juncture leads to the strength reduction when moulding plastics.
The utility model provides a cabinet air conditioner, including above-mentioned cabinet base.
By arranging the cabinet base in the cabinet air conditioner, correspondingly, the cabinet air conditioner has all the advantages of the cabinet base, and the description is omitted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the description of the embodiments or the background art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a cabinet base according to an embodiment of the present invention;
fig. 2 is a partially enlarged view of a portion a of a cabinet base according to an embodiment of the present invention;
description of the reference numerals:
10-an outer annular wall; 20-a first radial spoke; 30-a first stiffening rib; 31-a sub-stiffener; 40-a second stiffening rib; 42-a second radial spoke; 44-a third radial spoke; 46-a fourth radial spoke; 51-a first annular rib; 53-a second annular rib; 61-a first diameter; 62-second diameter.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
fig. 1 is a schematic structural view of a cabinet base according to an embodiment of the present invention; fig. 2 is an enlarged view of a part a of a base of a cabinet air conditioner according to an embodiment of the present invention; as shown in fig. 1-2, the cabinet base provided by the present embodiment includes an outer annular wall 10 and a plurality of first radial spokes 20, one end of the first radial spokes 20 connected to the outer annular wall 10 is provided with a first reinforcing rib 30, the first reinforcing rib 30 connects the first radial spokes 20 to the outer annular wall 10, at least part of adjacent first reinforcing ribs 30 are provided with a second reinforcing rib 40 therebetween, and the second reinforcing rib 40 is fixedly connected to the first reinforcing rib 30.
In the present embodiment, the cabinet base is substantially circular or elliptical when viewed from the top or bottom. Extending outwardly from the central region of the cabinet base are first radial spokes 20, each of which is perpendicular to the outer annular wall 10 at the intersection with the inner side of the outer annular wall 10.
By providing the first reinforcing ribs 30 at the intersection of the first radial spokes 20 and the outer annular wall 10, support can be formed at the angle region where the first radial spokes 20 and the outer annular wall 10 intersect, improving the strength of the connection between the first radial spokes 20 and the outer annular wall 10. And the second reinforcing ribs 40 are arranged between at least part of the first reinforcing ribs 30, so that the first reinforcing ribs 30 can be supported, and the strength of the cabinet base is improved under the condition that defects at the junction of melts at two sides cannot be avoided in the injection molding process.
As shown in fig. 1 and 2, in particular, the first reinforcing rib 30 includes two sub-reinforcing ribs 31 symmetrically disposed along the first radial spoke 20 and each having an arc shape, and the second reinforcing rib 40 is connected to a middle portion of the sub-reinforcing rib 31.
Wherein the two sub-reinforcing ribs 31 also jointly form an arc, which may be a semi-circle or a semi-ellipse, opening towards the inside of the outer annular wall 10. The junction of each sub-reinforcing rib 31 with the first radial spoke 20 is perpendicular to the first radial spoke 20, while the angle at which the sub-reinforcing rib 31 joins the outer annular wall 10 is an acute or right angle greater than 70 °.
More specifically, the second reinforcing rib 40 is connected to the middle of the sub-reinforcing rib 31, meaning that the second reinforcing rib 40 is connected to the middle of the sub-reinforcing rib 31 in the length direction. The second reinforcing ribs 40 may also be curved with their openings facing towards the inner side of the outer annular wall 10, so that the profile of the second reinforcing ribs 40 is smoothly arranged to reduce the effect of stress concentrations on the reinforcing ribs. Further, the portion of the second reinforcing rib 40 connected to the middle of the sub-reinforcing rib 31 is perpendicular to the middle of the sub-reinforcing rib 31 to improve the supporting effect.
The second reinforcing rib 40 is connected with the middle part of the sub reinforcing rib 31, and the sub reinforcing rib 31 at the position where the sub reinforcing rib 31 is farthest from two ends, namely the position where the sub reinforcing rib 31 is farthest from the existing supporting part, is supported at the position where the deformation is maximum when the sub reinforcing rib 31 is stressed, so that the rigidity of the sub reinforcing rib 31 is improved, the overall strength of the cabinet base is further improved, and the strength loss caused by the defect of the junction of the molten mass is reduced.
As shown in fig. 1 and 2, preferably, the cabinet base further comprises a first annular rib 51, a second radial spoke 42 is provided between the first annular rib 51 and the outer annular wall 10, and the second reinforcing rib 40 fixedly connects the first reinforcing rib 30 and the second radial spoke 42.
That is, in addition to the first radial spokes 20, the cabinet base comprises second radial spokes 42, one end of the second radial spokes 42 being connected to the first annular rib 51 and the other end being connected to the inside of the outer annular wall 10, the second radial spokes 42 being shorter in length than the first radial spokes 20. Between two adjacent first radial spokes 20, a second radial spoke 42 may be provided. In addition, the angle between the second reinforcing ribs 40 and the second radial spokes 42 at the location of their connection may not be a right angle, for example, an acute angle of 60-80.
Fixedly attaching the other end of second reinforcing rib 40 to second radial spoke 42 enables second reinforcing rib 40 to support first reinforcing rib 30 by exerting a force on second radial spoke 42 through its other end, thereby taking the load of second reinforcing rib 40 with the strength of second radial spoke 42.
As shown in fig. 2, the second reinforcing ribs 40 are preferably also fixedly connected to the outer annular wall 10 by third radial spokes 44.
Wherein one end of the third radial spoke 44 is the outside of the second reinforcing rib 40, i.e. the side of the second reinforcing rib 40 facing the outer annular wall 10, and the other end of the third radial spoke 44 is the inside of the outer annular wall 10. The connecting position of the third radial spoke 44 and the second reinforcing rib 40 is not limited to the central position of the second reinforcing rib 40 in the length direction, in other words, the two parts of the second reinforcing rib 40 located at both sides of the third radial spoke 44 are not necessarily symmetrical along the third radial spoke 44. For example, it may be that the length of the second reinforcing ribs 40 from between the third radial spoke 44 and the first radial spoke 20 is greater than the length between the third radial spoke 44 and the second radial spoke 42.
The second reinforcing ribs 40 are fixedly connected to the outer annular wall 10 by means of the third radial spokes 44, limiting the distance between a part of the second reinforcing ribs 40 and the outer annular wall 10, the distance between this part and the outer annular wall 10 changing to a significantly reduced extent when the second reinforcing ribs 40 are subjected to pressure, so as to prevent the second reinforcing ribs 40 from being damaged by the pressure bar stabilizing effect.
As shown in fig. 1 and 2, preferably, the cabinet base further comprises a second annular rib 53, the second annular rib 53 being located between the first annular rib 51 and the outer annular wall 10, the second annular rib 53 being fixedly connected to the second reinforcing rib 40 by the fourth radial spokes 46.
The fourth radial spokes 46 are connected at one end to the outside of the second annular rib 53, i.e. to the side facing the outer annular wall 10, and at the other end to the inside of the second reinforcing ribs 40, i.e. to the side facing the central area of the cabinet base. More specifically, the connection position of the fourth radial spoke 46 to the second reinforcing rib 40 and the connection position of the third radial spoke 44 to the second reinforcing rib 40 are the same in the length direction of the second reinforcing rib 40. Further, a fourth radial spoke 46 connected to each second reinforcing rib 40 may be collinear with the third radial spoke 44.
By fixedly connecting the second reinforcing rib 40 to the second annular rib 53 through the fourth radial spokes 46, when the second reinforcing rib 40 is under pressure, the change degree of the distance between the local part and the second annular rib 53 is significantly reduced, and the load is shared by the fourth radial spokes 46 on the second annular rib 53 having higher supporting strength, thereby preventing the second reinforcing rib 40 from being damaged due to the strut stabilizing effect. Moreover, regardless of the deformation of the second reinforcement rib 40 from its substantially central region to either the radially outer or inner side due to the pressure, either the third radial spoke 44 or the fourth radial spoke 46 takes on tension, preventing damage to the radial spokes on either side of the second reinforcement rib 40 and loss of support.
As shown in fig. 1 and 2, preferably, two second reinforcing ribs 40 are disposed between two adjacent first reinforcing ribs 30, and two adjacent second reinforcing ribs 40 are connected to the same second radial spoke 42.
More specifically, the two second reinforcing ribs 40 respectively connected to both sides of the same second radial spoke 42 may be connected to the second radial spoke 42 at the same position in the longitudinal direction of the second radial spoke 42. That is, at a position along the length of the second radial spoke 42, one side of the cabinet base in the circumferential direction is connected to one second reinforcing rib 40, and the other side in the circumferential direction is connected to another second reinforcing rib 40.
Connecting two adjacent second reinforcing ribs 40 to the same second radial spoke 42 makes it possible to transmit the forces of the second reinforcing ribs 40, which are applied to the second radial spoke 42 on both sides of the cabinet base in the circumferential direction, as much as possible, and reduce the bending moment generated on the second radial spoke 42, thereby reducing the load on the second radial spoke 42 and ensuring the stability of the second radial spoke 42 as much as possible.
As shown in fig. 2, preferably the second reinforcing ribs 40 are arc-shaped, the opening of the arc being directed towards the outer annular wall 10, and the third radial spokes 44 are perpendicular to the second reinforcing ribs 40.
The third radial spokes 44 are perpendicular to the second reinforcing ribs 40, so that the extending direction of the third radial spokes 44 is consistent with the direction of the deformation tendency of the connecting position of the second reinforcing ribs 40, and the acting force caused by the deformation tendency only stretches or compresses the third radial spokes 44, and no bending moment is generated relative to the connecting position of the third radial spokes 44 and the outer annular wall 10, which is beneficial to maintaining the stability of the third radial spokes 44.
In another embodiment, the second reinforcing ribs 40 may be formed in a zigzag shape, but the zigzag shape is not stable as the above-described arc shape because the direction changes to a greater extent than the above-described arc shape and the stress locally applied is also greater.
As shown in fig. 2, preferably, fourth radial spokes 46 are perpendicular to second reinforcing ribs 40.
The fourth radial spoke 46 is perpendicular to the second reinforcing rib 40, so that the extending direction of the fourth radial spoke 46 can be consistent with the direction of the deformation tendency of the connection portion of the second reinforcing rib 40, and the acting force caused by the deformation tendency only stretches or compresses the fourth radial spoke 46, and no bending moment is generated relative to the connection portion of the fourth radial spoke 46 and the second annular rib 53, which is beneficial to maintaining the stability of the fourth radial spoke 46.
As shown in fig. 1, it is preferable that a portion of the second reinforcing ribs 40 connect the first reinforcing ribs 30 located at a first region, and the remaining second reinforcing ribs 40 connect the first reinforcing ribs 30 located at a second region, the first and second regions being symmetrical along a first diameter 61, and a second diameter 62 intersecting both the first and second regions, the first and second diameters 61 and 62 being perpendicular.
Wherein the second and first regions are, respectively, the vicinity of the location where the second diameter 62 intersects the outer annular wall 10. In the case that the connecting line of the two gates is substantially perpendicular to the second diameter 62, the junction position of the two molten masses is approximately located near the second diameter 62, and the specific junction position is not strictly limited by various factors in each injection molding process.
The second reinforcing ribs 40 are arranged in the first area and the second area, so that materials are favorably concentrated at the positions where the chassis of the cabinet machine is favorably strengthened to pass a drop test, the material waste is reduced, and the manufacturing cost is reduced.
Of course, in another embodiment, the second reinforcing rib 40 may be provided between all the first reinforcing ribs 30, and thus, although the first reinforcing ribs 30 can be reinforced, since there is no defect caused by the melt boundary at a portion farther from the second diameter 62, the necessity of providing the second reinforcing rib 40 is not so large as the first region and the second region.
Example two:
the second embodiment also provides a cabinet air conditioner, which comprises the cabinet base.
By arranging the cabinet base in the cabinet air conditioner, correspondingly, the cabinet air conditioner has all the advantages of the cabinet base, and the description is omitted.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
In the above embodiments, the descriptions of the orientations such as "up", "down", and the like are based on the drawings.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. Cabinet base, characterized in that it comprises an outer annular wall (10) and a plurality of first radial spokes (20), the ends of the plurality of first radial spokes (20) connected to the outer annular wall (10) being provided with first reinforcing ribs (30), the first reinforcing ribs (30) connect the first radial spokes (20) and the outer annular wall (10), at least part of adjacent first reinforcing ribs (30) are provided with second reinforcing ribs (40), and the second reinforcing ribs (40) are fixedly connected with the first reinforcing ribs (30).
2. Cabinet base according to claim 1, characterized in that it further comprises a first annular rib (51), between said first annular rib (51) and said outer annular wall (10) there being provided second radial spokes (42), said second reinforcing ribs (40) fixedly connecting said first reinforcing ribs (30) and said second radial spokes (42).
3. Cabinet base according to claim 2, characterized in that said second reinforcing rib (40) is also fixedly connected with said outer annular wall (10) by means of a third radial spoke (44).
4. Cabinet base according to claim 3, characterized in that it further comprises a second annular rib (53), said second annular rib (53) being located between said first annular rib (51) and said outer annular wall (10), said second annular rib (53) being fixedly connected with said second reinforcing rib (40) by means of fourth radial spokes (46).
5. Cabinet base according to claim 2, characterized in that two second reinforcement ribs (40) are provided between two adjacent first reinforcement ribs (30), both adjacent second reinforcement ribs (40) being connected to the same second radial spoke (42).
6. Cabinet base according to claim 3, characterized in that said second reinforcement rib (40) is arc-shaped, opening towards said outer annular wall (10), said third radial spoke (44) being perpendicular to said second reinforcement rib (40).
7. Cabinet base according to claim 4, characterized in that the fourth radial spoke (46) is perpendicular to the second reinforcement rib (40).
8. Cabinet base according to any of the claims 1-7, characterized in that the first reinforcement rib (30) comprises two arc-shaped sub reinforcement ribs (31) symmetrically arranged along the first radial spoke (20), and the second reinforcement rib (40) is connected with the middle of the sub reinforcement ribs (31).
9. Cabinet base according to any of the claims 1-7, characterized in that part of the second reinforcement ribs (40) connect the first reinforcement ribs (30) at a first area and the rest of the second reinforcement ribs (40) connect the first reinforcement ribs (30) at a second area, which first and second areas are symmetrical along a first diameter (61) and a second diameter (62) both intersect the first and second areas, which first diameter (61) and second diameter (62) are perpendicular.
10. A cabinet air conditioner characterized by comprising the cabinet base of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221547081.3U CN217952680U (en) | 2022-06-17 | 2022-06-17 | Cabinet base and cabinet air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221547081.3U CN217952680U (en) | 2022-06-17 | 2022-06-17 | Cabinet base and cabinet air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217952680U true CN217952680U (en) | 2022-12-02 |
Family
ID=84218486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221547081.3U Active CN217952680U (en) | 2022-06-17 | 2022-06-17 | Cabinet base and cabinet air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217952680U (en) |
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2022
- 2022-06-17 CN CN202221547081.3U patent/CN217952680U/en active Active
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