CN219370306U - Fan fixing device - Google Patents
Fan fixing device Download PDFInfo
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- CN219370306U CN219370306U CN202223600714.5U CN202223600714U CN219370306U CN 219370306 U CN219370306 U CN 219370306U CN 202223600714 U CN202223600714 U CN 202223600714U CN 219370306 U CN219370306 U CN 219370306U
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Abstract
The application relates to the technical field of chassis heat dissipation, specifically discloses a fan fixing device, include: a fan fixing housing, a fan dust cover and a chassis fixing arm; the fan dust cover is embedded into one surface of the fan fixing shell, which faces the outer side of the equipment, so as to be connected with the fan fixing shell and the chassis fixing arm to form an integrated accommodating cavity for accommodating the radiating fan body; the fan fixing shell is provided with a first buckle structure for fixing the cooling fan body and a first limiting structure for limiting the cooling fan body; the case fixing arm is provided with a second buckle structure for fixing the case of the equipment and a second limiting structure for limiting a fan fixing hole arranged in the case of the equipment; the first buckle structure and the second buckle structure are deformable elements, are not required to be fixed by screws and are matched with the limiting structure, so that the installation of the cooling fan is greatly facilitated, and the dustproof effect is realized.
Description
Technical Field
The application relates to the technical field of chassis heat dissipation, in particular to a fan fixing device.
Background
When the devices such as the controller, the driver, the frequency converter and the like are operated, a large amount of heat is generated, and a heat dissipation fan is required to be adopted for heat dissipation treatment.
Fig. 1 is a schematic diagram of a fixing manner of a heat dissipation fan of a device.
Conventionally, a cooling fan is fixed to a device by using screws, specifically, the cooling fan 101 is a 6025 fan (i.e. the size is 60 mm×60 mm×25 mm), and when the cooling fan 101 is mounted to the device case 102, the cooling fan 101 is usually fixed to the device case 102, then the fan dust cover 103 is mounted to the outside of the cooling fan 101, and four screws 104 are driven into four corners of the cooling fan 101 to fix the cooling fan. When the cooling fan 101 is installed, the required material types are more, the required material cost and the labor cost are higher, four screws 104 are required to be manually driven into the electric batch to fix the cooling fan 101, blind screw hole positions are also required in operation, the efficiency is lower, the situation that screws are required to be replaced due to screw tooth sliding caused by the deviation of the screws 104 is easy in operation, the hand is easy to be strained when the electric batch is manually operated for a long time, and the labor efficiency can be further reduced.
Providing a solution for facilitating the installation of a cooling fan is a technical problem that needs to be solved by a person skilled in the art.
Disclosure of Invention
The purpose of this application is to provide a fan fixing device, need not the screw and can be fixed in equipment machine case with radiator fan, the installation of the radiator fan of being convenient for uses.
In order to solve the above technical problem, the present application provides a fan fixing device, including: a fan fixing housing, a fan dust cover and a chassis fixing arm;
the fan dust cover is embedded into one surface of the fan fixing shell facing the outer side of the equipment so as to be connected with the fan fixing shell and the chassis fixing arm to form an integrated accommodating cavity for accommodating the radiating fan body;
the fan fixing shell is provided with a first buckle structure for fixing the cooling fan body and a first limiting structure for limiting the cooling fan body;
the case fixing arm is provided with a second buckle structure for fixing the case of the equipment and a second limiting structure for limiting a fan fixing hole arranged in the case of the equipment;
the first buckling structure and the second buckling structure are both formed by deformable elements.
Optionally, the first buckle structure specifically includes first fixed buckle and first cantilever beam type boss, the stiff end fixed connection of first cantilever beam type boss in fan fixed casing, the expansion end of first cantilever beam type boss with the bottom fixed connection of first fixed buckle, the top of first fixed buckle is equipped with and is used for detaining the buckle structure of radiator fan body.
Optionally, the number of the first fastening structures is specifically four, and the first fastening structures are respectively and correspondingly arranged at the four corners of the cooling fan body.
Optionally, the first limit structure is specifically an upright post structure corresponding to a screw preformed hole of the radiator fan body.
Optionally, the first limit structure is specifically a four-edge guiding pillar structure corresponding to the outer edge of the cooling fan body.
Optionally, the number of the chassis fixing arms is specifically two, and the chassis fixing arms are respectively and fixedly connected to two sides of the radiator fan body.
Optionally, the second buckle structure specifically includes second fixed buckle and second cantilever beam formula boss, the stiff end fixed connection of second cantilever beam formula boss in quick-witted case fixed arm, the expansion end of second cantilever beam formula boss with the bottom fixed connection of second fixed buckle, the top of second fixed buckle is equipped with the buckle structure that is used for detaining the quick-witted case fan fixed orifices of equipment machine case.
Optionally, the device further comprises a second buckle loosening structure arranged at the tail end of the movable end of the second cantilever type boss, and the second fixed buckle is arranged between the fixed end of the second cantilever type boss and the tail end of the movable end of the second cantilever type boss.
Optionally, the fan dust cover is specifically a metal mesh structure.
Optionally, the fan dust cover specifically includes: the fan cover comprises a fan cover body, a switching groove and a net surface switching device arranged on the outer side of the fan cover body;
the fan cover body comprises a plurality of shielding strips movably connected to the net surface switching device so as to switch the grid density of the fan cover body under the drive of the net surface switching device.
The application provides a fan fixing device includes: a fan fixing housing, a fan dust cover and a chassis fixing arm; the fan dust cover is embedded into one surface of the fan fixing shell, which faces the outer side of the equipment, so as to be connected with the fan fixing shell and the chassis fixing arm to form an integrated accommodating cavity for accommodating the radiating fan body; the fan fixing shell is provided with a first buckle structure for fixing the cooling fan body and a first limiting structure for limiting the cooling fan body; the case fixing arm is provided with a second buckle structure for fixing the case of the equipment and a second limiting structure for limiting a fan fixing hole arranged in the case of the equipment; the first buckle structure and the second buckle structure are both deformable elements. The utility model provides a fan fixing device can be fixed in the integral type through the buckle structure that deformable element constitutes radiator fan body and hold the chamber to wholly be fixed in equipment machine case, need not through the fix with screw, cooperation limit structure, greatly made things convenient for radiator fan's installation, and realized dustproof effect.
Drawings
For a clearer description of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of a device cooling fan fixing mode;
FIG. 2 is a schematic view of a first structure of a fan fixing device according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating installation of a cooling fan according to an embodiment of the present disclosure;
fig. 4 is a schematic installation diagram of a heat dissipation fan mounted to an equipment chassis according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a first fastening structure according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a second fastening structure according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram illustrating disassembly of a cooling fan according to an embodiment of the present disclosure;
wherein 101 is a cooling fan, 102 is an equipment cabinet, 103 is a fan dust cover, and 104 is a screw;
201 is a fan fixing shell, 202 is a fan dust cover, 203 is a chassis fixing arm, 204 is a first buckle structure, 205 is a first limiting structure, 206 is a second buckle structure, 207 is a second limiting structure, 208 is a first fixing buckle, 209 is a second fixing buckle, 210 is a second cantilever type boss, 211 is a second buckle loosening structure;
200 is a fan fixing device, 300 is a radiator fan body;
400 is an equipment enclosure.
Detailed Description
The core of the application is to provide a fan fixing device, which can fix the cooling fan on the equipment cabinet without screws, so that the cooling fan is convenient to install and use.
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments herein without undue burden are within the scope of the present application.
Example 1
Fig. 2 is a schematic structural diagram of a fan fixing device according to an embodiment of the present disclosure; fig. 3 is a schematic diagram illustrating installation of a cooling fan according to an embodiment of the present disclosure; fig. 4 is a schematic installation diagram of a cooling fan mounted to an equipment chassis according to an embodiment of the present application.
As shown in fig. 2, the fan fixing device provided in the embodiment of the present application includes: a fan fixing case 201, a fan dust cover 202, and a chassis fixing arm 203;
the fan dust cover 202 is embedded in the surface of the fan fixing housing 201 facing the outer side of the device, so as to be connected with the fan fixing housing 201 and the case fixing arm 203 to form an integrated accommodating cavity for accommodating the cooling fan body 300;
the fan fixing case 201 is provided with a first fastening structure 204 for fixing the cooling fan body 300 and a first limiting structure 205 for limiting the cooling fan body 300;
the case fixing arm 203 is provided with a second fastening structure 206 for fixing to the equipment case 400 and a second limiting structure 207 for limiting a fan fixing hole provided in the equipment case 400;
the first fastening structure 204 and the second fastening structure 206 are both deformable elements.
In a specific implementation, the internal shape of the integral receiving cavity formed by the fan dust cover 202, the fan fixing case 201, and the chassis fixing arm 203 is adapted to the structure of the radiator fan body 300 to be fixed. The fan dust cover 202, the fan fixing housing 201 and the chassis fixing arm 203 can all be made of plastic materials, and are light and easy to detach.
For the radiator fan body 300 of the 6025 fan, the inner size of the integrated accommodating chamber may be 60 mm×60 mm×25 mm.
The fan dust cover 202 is embedded in the fan fixing case 201 on the side facing the outside of the apparatus, i.e., at the fan heat radiation outlet. In order to facilitate replacement of the fan dust cover 202, the fan dust cover 202 may be detachably connected with the fan fixing housing 201, and specifically, a frame for setting the fan dust cover 202 may be fixed by being clamped into a clamping groove of the fan fixing housing 201, and the frame for setting the fan dust cover 202 is made of a deformable material, so that the fan dust cover 202 is mounted in and dismounted from the clamping groove.
The fan fixing case 201 is provided with a first fastening structure 204 for fixing the heat dissipation fan body 300 on a surface facing the integrated receiving cavity. The first fastening structure 204 is formed by a deformable element, so as to facilitate fixing the radiator fan body 300 to the fan fixing case 201 and removing the radiator fan body 300 from the fan fixing case 201.
The fan fixing housing 201 is further provided with a first limiting structure 205 facing the integrated accommodating cavity, and is used for conveniently aligning the first fastening structure 204 when the cooling fan body 300 is installed.
The number of the case fixing arms 203 may be two, and they are respectively and fixedly connected to two sides of the radiator fan body 300. As shown in fig. 2, two chassis fixing arms 203 are respectively disposed on two sides of the fan fixing housing 201, only two rectangular holes corresponding to the cross section of the chassis fixing arms 203 need to be punched on the equipment chassis 400, and the chassis fixing arms 203 penetrate into the chassis fan fixing holes of the equipment chassis 400, so that the fixing arm body of the chassis fixing arms 203 can be used as a second limiting structure 207 to limit between the fan fixing device 200 and the equipment chassis 400.
To facilitate the assembly and disassembly of the fan assembly 200, the second snap structure 206 may be disposed on the outside of the chassis securing arm 203 as compared to the housing cavity as a single piece.
The second snap structure 206 provided to the cabinet fixing arm 203 is formed of a deformable member so as to facilitate fixing the fan fixing device 200 mounted with the radiator fan body 300 to the apparatus cabinet 400 and removing the fan fixing device 200 mounted with the radiator fan body 300 from the apparatus cabinet 400.
Referring to the first limiting structure 205, as shown in fig. 3, the radiator fan body 300 is vertically installed in an integrated accommodating chamber formed by the fan dust cover 202, the fan fixing case 201, and the chassis fixing arm 203. After the wiring of the cooling fan wiring is completed, as shown in fig. 4, the fan fixing device 200 with the cooling fan body 300 is fixed to the equipment chassis 400 by the second fastening structure 206 through the reserved or temporary through chassis fan fixing hole at the reserved position of the equipment chassis 400 for installing the cooling fan.
Example two
Fig. 5 is a schematic structural diagram of a first fastening structure according to an embodiment of the present application.
On the basis of the above embodiments, the present embodiment further describes the first fastening structure 204 and the first limiting structure 205.
In the fan fixing device provided in this embodiment of the present application, the first fastening structure 204 may specifically include a first fixing fastening 208 and a first cantilever type boss, where the fixed end of the first cantilever type boss is fixedly connected to the fan fixing housing 201, the movable end of the first cantilever type boss is fixedly connected to the bottom end of the first fixing fastening 208, and the top end of the first fixing fastening 208 is provided with a fastening structure for fastening the radiator fan body 300.
Fig. 5 shows a state in which the radiator fan has been fitted into the integrated housing chamber formed by the fan dust cover 202, the fan fixing case 201, and the chassis fixing arm 203, and the radiator fan body 300 is fixed by the first fixing snaps 208 provided in the first snap structures 204 provided at the four corners of the fan fixing case 201.
As shown in fig. 5, in order to avoid the installation of the radiator fan body 300, the top end of the first fixing buckle 208 is provided with a slope along the installation direction of the radiator fan body 300, and after the side edge of the radiator fan body 300 is pressed under the first fixing buckle 208, the radiator fan body 300 is fixed with the fan fixing case 201 by a hook structure under the top end of the first fixing buckle 208.
A first cantilever type boss is disposed at the bottom (not shown in fig. 5) of the first fixing buckle 208, and its structure is specifically that one end is fixed on the fan fixing housing 201, and the other end is in a suspended design, so that the deformation of the first buckle structure 204 is realized through the position change of the movable end of the first cantilever type boss, and the first fixing buckle 208 is driven to break away from the inherent position, so as to detach the radiator fan body 300.
In order to realize the stable fixation of the cooling fan body 300, the number of the first fastening structures 204 is specifically four, and the first fastening structures are respectively and correspondingly arranged at the four corners of the cooling fan body 300.
The first limiting structure 205 may be a pillar structure disposed corresponding to a screw preformed hole of the cooling fan body 300. The finished cooling fan body 300 is reserved with a screw reserved hole for driving in a screw. In this embodiment, a post structure corresponding to a screw preformed hole may be disposed inside the fan fixing housing 201 to limit the cooling fan body 300.
Alternatively, the first limiting structure 205 may be a four-side guide pillar structure disposed corresponding to the outer edge of the radiator fan body 300. As shown in fig. 2 and 5, a four-side guide pillar structure may be disposed corresponding to the outer side of the outer edge of the radiator fan body 300, corresponding to the radiator fan body 300 having a relatively regular outer edge shape (e.g., the outer edge shape of 6025 fan is square). The guiding strut structures on two sides can directly adopt the chassis fixing arm 203 to simplify the device structure, and the guiding strut structures on two sides are designed to be shorter strut structures, so that shielding of sight is reduced.
Example III
Fig. 6 is a schematic structural diagram of a second fastening structure according to an embodiment of the present disclosure; fig. 7 is a schematic diagram illustrating disassembly of a cooling fan according to an embodiment of the present application.
Based on the above embodiments, the second fastening structure 206 is further described in the embodiments of the present application.
As shown in fig. 6, in the fan fixing device provided in this embodiment of the present application, the second fastening structure 206 may specifically include a second fixing fastener 209 and a second cantilever-type boss 210, where a fixed end of the second cantilever-type boss 210 is fixedly connected to the chassis fixing arm 203, a movable end of the second cantilever-type boss 210 is fixedly connected to a bottom end of the second fixing fastener 209, and a fastening structure for fastening a chassis fan fixing hole of the equipment chassis 400 is provided at a top end of the second fixing fastener 209.
In order to firmly mount the fan fixing device 200 mounted with the cooling fan body 300 on the apparatus case 400, the second fastening structure 206 should be sized to be larger. In order to reduce the abrasion to the chassis fan fixing hole, one surface of the second fixing buckle 209 close to the chassis fan fixing hole is provided with an inclined surface structure, so that smoothness is increased when the fan fixing device 200 is fixed to the equipment chassis 400 along the chassis fixing arm 203, and the chassis fan fixing hole is hooked by a hook structure at the lower side of the second fixing buckle 209 after clamping.
As shown in fig. 6, two sets of second fastening structures 206 are respectively disposed on the two chassis fixing arms 203. In the set of second fastening structures 206, the fixed end of the second cantilever-type boss 210 is disposed on a side close to the equipment chassis 400, the movable end of the second cantilever-type boss 210 is disposed on a side far away from the equipment chassis 400, and the second fixing fastener 209 is disposed on the movable end of the second cantilever-type boss 210 and reserves a part of the movable end far away from the equipment chassis 400, so that after the fan fixing device 200 is installed on the equipment chassis 400, a part of the movable end of the second cantilever-type boss 210 is exposed outside the fan fixing hole of the chassis, and the second cantilever-type boss 210 is pulled from outside the fan fixing hole of the chassis to deform the second fastening structures 206, so that the part of the second fixing fastener 209, which buckles the fan fixing hole of the chassis, is disengaged, and the whole fan fixing device 200 is detached from the equipment chassis 400.
To further facilitate removing the fan fixing apparatus 200 from the device chassis 400, the fan fixing apparatus provided in this embodiment of the present application further includes a second fastening/loosening structure 211 disposed at a movable end of the second cantilever type boss 210, and the second fastening buckle 209 is disposed between a fixed end of the second cantilever type boss 210 and a movable end of the second cantilever type boss 210.
In an embodiment, as shown in fig. 6, the second catch release structure 211 is provided as a prismatic structure perpendicular to the side of the second cantilever beam boss 210, and the upper side thereof is provided with a prismatic structure for inserting a finger therein. As shown in fig. 7, after the second buckle releasing structure 211 is buckled, the second cantilever beam boss 210 is driven to deform inwards, so that the second fixing buckle 209 can be separated from the fan fixing hole of the chassis.
As shown in fig. 4, after the fan fixing device 200 is fixed to the equipment chassis 400, the chassis fixing arm 203 is inserted into the chassis fan fixing hole, and in the second fastening structure 206, the second fastening buckle 209 hooks the chassis fan fixing hole, and the second fastening buckle releasing structure 211 is exposed outside the chassis fan fixing hole. When the fan fixing apparatus 200 is to be detached from the device casing 400, the second fastening release structures 211 on the two casing fixing arms 203 are pressed by both hands, so that the second cantilever beam bosses 210 on both sides are deformed inwards, and the second fastening buckles 209 on both sides are separated from the casing fan fixing holes, thereby the fan fixing apparatus 200 can be detached from the device casing 400 without obstruction.
Example IV
Based on the above embodiments, in the fan fixing device provided in the embodiments of the present application, in order to enhance the heat dissipation effect, the fan dust cover 202 may adopt a metal mesh structure.
In the use of the cooling fan, the cooling requirement and the dust-proof requirement are different according to the equipment where the cooling fan is located and the position of the equipment. In order to accommodate different heat dissipation requirements and dust-proof requirements, in the fan fixing device 200 provided in the embodiment of the present application, the fan dust cover 202 specifically includes: the fan cover comprises a fan cover body, a switching groove and a net surface switching device arranged on the outer side of the fan cover body;
the fan cover body comprises a plurality of shielding strips movably connected to the net surface switching device so as to switch the grid density of the fan cover body under the drive of the net surface switching device.
In particular implementations, the fan dust cap 202 is configured to adjust the grid density to accommodate different heat dissipation and dust protection requirements. When the heat dissipation requirement is higher and the dust prevention requirement is lower, the grid density of the fan cover body can be reduced, namely the meshes of the fan cover body are increased, so that the heat dissipation requirement is met; when the heat dissipation requirement is not very high and the dustproof requirement is high, the grid density of the fan cover body can be increased, namely, the grid of the fan cover body is reduced, and the dustproof requirement is met.
The switching groove is used as a device for accommodating the shielding strips of the fan cover body, the shielding strips can be connected through a bearing structure, and the mesh surface switching device changes the mesh density of the fan cover body by changing the position relationship between the shielding strips.
The fan fixing device provided by the application is described in detail above. In the description, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and identical and similar parts between the embodiments are all enough to be seen with each other.
It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
It should also be noted that in this specification, relational terms such as first and second are 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. Moreover, the terms "comprises," "comprising," or any 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A fan fixing apparatus, comprising: a fan fixing housing, a fan dust cover and a chassis fixing arm;
the fan dust cover is embedded into one surface of the fan fixing shell facing the outer side of the equipment so as to be connected with the fan fixing shell and the chassis fixing arm to form an integrated accommodating cavity for accommodating the radiating fan body;
the fan fixing shell is provided with a first buckle structure for fixing the cooling fan body and a first limiting structure for limiting the cooling fan body;
the case fixing arm is provided with a second buckle structure for fixing the case of the equipment and a second limiting structure for limiting a fan fixing hole arranged in the case of the equipment;
the first buckling structure and the second buckling structure are both formed by deformable elements.
2. The fan fixing device according to claim 1, wherein the first fastening structure specifically comprises a first fixing fastener and a first cantilever type boss, the fixed end of the first cantilever type boss is fixedly connected to the fan fixing housing, the movable end of the first cantilever type boss is fixedly connected with the bottom end of the first fixing fastener, and the top end of the first fixing fastener is provided with a fastening structure for fastening the cooling fan body.
3. The fan fixing device according to claim 1, wherein the number of the first fastening structures is four, and the first fastening structures are respectively and correspondingly arranged at four corners of the cooling fan body.
4. The fan fixing device according to claim 1, wherein the first limiting structure is specifically a column structure disposed corresponding to a screw reserved hole of the cooling fan body.
5. The fan fixing device according to claim 1, wherein the first limiting structure is specifically a four-side guiding pillar structure disposed corresponding to an outer edge of the cooling fan body.
6. The fan fixing device according to claim 1, wherein the number of the case fixing arms is two, and the case fixing arms are respectively and fixedly connected to two sides of the heat dissipation fan body.
7. The fan fixing device according to claim 1, wherein the second fastening structure specifically includes a second fixing fastener and a second cantilever type boss, a fixed end of the second cantilever type boss is fixedly connected to the chassis fixing arm, a movable end of the second cantilever type boss is fixedly connected to a bottom end of the second fixing fastener, and a fastening structure for fastening a chassis fan fixing hole of the equipment chassis is provided at a top end of the second fixing fastener.
8. The fan fastening device of claim 7, further comprising a second snap release structure disposed at a free end terminus of a second cantilevered boss, the second fastening snap being disposed between a fixed end of the second cantilevered boss and the free end terminus of the second cantilevered boss.
9. The fan fastening device of claim 1, wherein the fan dust cover is embodied as a metal mesh structure.
10. The fan fixture of claim 1 wherein the fan dust cover specifically comprises: the fan cover comprises a fan cover body, a switching groove and a net surface switching device arranged on the outer side of the fan cover body;
the fan cover body comprises a plurality of shielding strips movably connected to the net surface switching device so as to switch the grid density of the fan cover body under the drive of the net surface switching device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223600714.5U CN219370306U (en) | 2022-12-29 | 2022-12-29 | Fan fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223600714.5U CN219370306U (en) | 2022-12-29 | 2022-12-29 | Fan fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219370306U true CN219370306U (en) | 2023-07-18 |
Family
ID=87151712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223600714.5U Active CN219370306U (en) | 2022-12-29 | 2022-12-29 | Fan fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219370306U (en) |
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2022
- 2022-12-29 CN CN202223600714.5U patent/CN219370306U/en active Active
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