CN212302388U - Anti-backflow fan wind shield and case applying same - Google Patents
Anti-backflow fan wind shield and case applying same Download PDFInfo
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- CN212302388U CN212302388U CN202021118008.5U CN202021118008U CN212302388U CN 212302388 U CN212302388 U CN 212302388U CN 202021118008 U CN202021118008 U CN 202021118008U CN 212302388 U CN212302388 U CN 212302388U
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Abstract
The utility model provides a fan deep bead of anti-return and quick-witted case of using thereof, the fan deep bead of anti-return includes: at least one pair of baffles, each pair of baffles comprises a left baffle and a right baffle; the left baffle and the right baffle are respectively and correspondingly rotatably connected to the top ends of the two partition plates corresponding to each fan slot position, the left baffle and the right baffle corresponding to the same fan slot position can be outwards rotated and unfolded relative to the fan slot position when receiving thrust generated by the fan when the fan is installed into the fan slot position until the left baffle and the right baffle are parallel to the partition plates, so that the fan slot position is opened, and the fan slot position is blocked by the left baffle and the right baffle through butt joint and closing of resilience force relative to the fan slot position when the fan is pulled out of the fan slot position; the partition board is correspondingly arranged at the edge of the fan groove and is parallel to the direction of the fan in which the fan is installed and pulled out. The utility model discloses can separate the fender to the wind channel automatically after the fan is pulled out, prevent that the distinguished and admirable from running off in the wind channel, solve the extravagant problem of the amount of wind, reduce to the inside radiating influence of server after the fan is pulled out.
Description
Technical Field
The utility model relates to a server technical field especially relates to server machine case technical field.
Background
The server may lose efficacy in the using process, so that the fan in the chassis of the server often needs to be thermally maintained, at this time, the fan needs to be pulled out from the chassis, and the fan needs to be pulled out for replacement or maintenance. In addition, because the air duct is in an open state after the fan module is pulled out, a large amount of air can be lost, and resource waste is caused.
Therefore, when the fan is pulled out of the fan slot, the fan slot needs to be blocked, and stable operation of the server is guaranteed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a backflow-preventing fan wind guard and a chassis using the same, for blocking a corresponding fan slot after a fan in the chassis is pulled out from the fan slot.
To achieve the above and other related objects, the present invention provides a backflow prevention fan wind deflector, including: at least one pair of baffles, each pair of baffles comprises a left baffle and a right baffle; the left baffle and the right baffle are respectively and correspondingly rotatably connected to the top ends of the two partition plates corresponding to each fan slot position, the left baffle and the right baffle corresponding to the same fan slot position can be outwards rotated and unfolded relative to the fan slot position to be parallel to the partition plates when receiving thrust generated by the fan when the fan is installed into the fan slot position, so that the fan slot position is opened, and the fan slot position is blocked by the left baffle and the right baffle through the butt joint and closing of resilience force relative to the fan slot position when the fan is pulled out of the fan slot position; the partition board is correspondingly arranged at the edge of the fan groove and is parallel to the direction of the fan in which the fan is installed and pulled out.
In an embodiment of the present invention, the adjacent left baffle and right baffle corresponding to different fan slots are connected to the same partition plate.
In an embodiment of the present invention, the left baffle is connected to the corresponding partition through a left rotating bracket, and the right baffle is connected to the corresponding partition through a right rotating bracket; the left baffle plate is fixedly connected with the left rotating support through a fixing component, and the right baffle plate is fixedly connected with the right rotating support through a fixing component.
In an embodiment of the present invention, the partition board is connected to the left rotating bracket and/or the right rotating bracket through a rotating shaft, and the rotating shaft is provided with a torsion spring for generating a resilience force according to a predetermined direction.
In an embodiment of the present invention, the left rotating bracket includes a left fixing plate for fixing the left baffle and a right fixing plate for fixing the left baffle and a left connecting portion for connecting the left fixing plate to the rotating shaft, and the right rotating bracket includes a right fixing plate for fixing the right baffle and a right connecting portion for connecting the right fixing plate to the rotating shaft.
In an embodiment of the present invention, the left connecting portion includes an upper left connecting ring and a lower left connecting ring respectively disposed at the upper and lower ends of the left fixing plate, and the right connecting portion includes an upper right connecting ring and a lower right connecting ring respectively disposed at the upper and lower ends of the right fixing plate.
In an embodiment of the present invention, the rotating shaft is further provided with a blocking member for controlling the longitudinal movement distance of the torsion spring, the left connecting portion and/or the right connecting portion.
In an embodiment of the present invention, the blocking member is an E-shaped clamp spring.
In an embodiment of the present invention, the partition board is provided with a groove body for accommodating the rotating shaft, the groove body is matched with the rotating shaft.
The utility model also provides a machine case, machine case uses as above the fan deep bead of anti-return.
As described above, the utility model discloses a fan deep bead of anti-return and quick-witted case of using thereof has following beneficial effect:
the utility model discloses in through set up two rotatable baffles at every fan trench, two baffles can be relatively this fan trench expand to make with the baffle is parallel to the outside side rotation when receiving the thrust that the fan trench produced of packing into the fan trench is opened, pull out at the fan trench is closed to make through this fan trench butt joint of resilience force relatively the fan trench is blocked by two baffles, so the utility model discloses can separate the fender to the wind channel automatically after pulling out the fan, prevent that the distinguished and admirable from running off in the wind channel, solve the extravagant problem of amount of wind, reduced to the radiating influence inside the server behind the fan of pulling out, guaranteed the stability of server, moreover the utility model discloses still have simple structure, economical and practical's advantage.
Drawings
Fig. 1 is a schematic view showing a structural relationship between a fan wind guard and a case of the present invention.
Fig. 2 shows a schematic view of the connection between the right baffle and the partition plate in the middle anti-backflow fan wind guard of the present invention.
Fig. 3 shows a schematic diagram of the middle baffle plate of the fan wind guard for preventing backflow simultaneously connecting the left baffle plate and the right baffle plate.
Fig. 4 shows an explosion diagram of the middle baffle plate of the fan wind guard for preventing backflow simultaneously connecting the left baffle plate and the right baffle plate.
Fig. 5 and 6 are schematic views illustrating the use principle of the backflow preventing fan wind guard of the present invention.
Description of the element reference numerals
100 backflow-preventing fan wind shield
110 left baffle
111 left rotating bracket
112 fixed component
120 right baffle
121 right rotating bracket
130. 140 baffle
131 rotary shaft
132 torsion spring
133E type clamp spring
134 trough body
200 case
300 Fan
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 6. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The present embodiment aims to provide a backflow-preventing fan wind guard and a chassis using the same, which are used for blocking a corresponding fan slot after a fan in the chassis is pulled out from the fan slot.
The following will describe in detail a backflow-preventing fan wind deflector of the present embodiment and a chassis principle and an implementation method applied thereto, so that those skilled in the art can understand the backflow-preventing fan wind deflector of the present embodiment and the chassis applied thereto without creative work.
As shown in fig. 1, the present embodiment provides a backflow-preventing fan windshield 100, the backflow-preventing fan windshield 100 including: at least one pair of baffles, each pair of baffles comprising a left baffle 110 and a right baffle 120. Each pair of baffles is installed at the fan slot position of one fan 300, and the pair of baffles is used for shielding one fan slot position when the fan 300 is pulled out.
In this embodiment, the spacer is preferably an extruded or die-cast aluminum member, and the thickness of the spacer is preferably not more than 3mm, preferably 2 mm; the backflow-preventing fan wind deflector 100 is preferably a sheet metal aluminum part.
Specifically, in the present embodiment, the left baffle 110 and the right baffle 120 are respectively and rotatably connected to the top ends of two partitions (partition 130 and partition 140) corresponding to each fan slot. As shown in fig. 1, the left and right baffles 110 and 120 are located at the top of the slot of the fan 300 in the loading direction of the fan 300, i.e., at a position close to the front end of the fan 300 when the fan 300 is fully loaded into the corresponding fan slot.
In this embodiment, when receiving a thrust generated by the fan 300 being loaded into a fan slot, the left baffle 110 and the right baffle 120 corresponding to the same fan slot may rotate outward relative to the fan slot to expand to be parallel to the partition board so that the fan slot is open, and when the fan 300 is pulled out of the fan slot, the left baffle 110 and the right baffle 120 block the fan slot by the resilience force of the resilience force abutting against the fan slot; the partition plates (130, 140) are correspondingly installed at the edges of the slots of the fan and are parallel to the loading and pulling directions of the fan 300.
Namely, the two sides of one fan slot are respectively provided with a partition board (130, 140), the two partition boards (130, 140) are respectively and correspondingly connected with the left baffle 110 and the right baffle 120, the left baffle 110 and the right baffle 120 are equivalent to half doors of two fans, when the fan 300 is installed in the fan slot, the two doors are opened when the left baffle 110 and the right baffle 120 are opened outwards, when the fan 300 is pulled out of the fan slot, the left baffle 110 and the right baffle 120 are returned towards the pulling-out direction of the fan 300, and the two doors are closed, at this time, one side of the fan slot is completely blocked, so that the air duct is blocked, the air flow is prevented from being lost from the air duct, and the noise influence caused by other fans is reduced.
Specifically, as shown in fig. 1 and 2, in the present embodiment, one partition (the partition 130 or the partition 140) may be connected to only one left baffle 110 or one right baffle 120, for example, in the outermost fan slot, the adjacent partition is connected to only one left baffle 110 or one right baffle 120. The first partition of the left-most fan slot in chassis 200 is connected to only one left baffle 110, and the first partition of the right-most fan slot in chassis 200 is connected to only one right baffle 120. In particular, when there is only one fan slot, i.e., only one partition on the left side and one partition on the right side are included, the left partition is connected to only one left baffle 110 and the right partition is connected to only one right baffle 120.
As shown in fig. 3, in the present embodiment, when there are more than one fan slot, that is, the number of the fan slots is greater than or equal to two, the adjacent left baffle 110 and right baffle 120 corresponding to different fan slots are connected to the same partition board. That is, the partitions between the two fan slots are connected to a baffle, respectively, which is connected to the left baffle 110 of the right fan slot and the right baffle 120 of the left fan slot.
As shown in fig. 4, in the present embodiment, the left baffle 110 is connected to the corresponding partition through a left rotating bracket 111, and the left rotating bracket 111 provides a rotating function for the left baffle 110; the right baffle 120 is connected with the corresponding partition plate through a right rotating bracket 121; the left baffle 110 and the left rotating bracket 111 are fixedly connected through a fixing component 112, and the right baffle 120 and the right rotating bracket 121 are fixedly connected through a fixing component 112.
Specifically, in this embodiment, the left rotating bracket 111 includes a left fixing plate for fixing with the left baffle 110 and a left connecting portion disposed on the left fixing plate and used for being sleeved on the rotating shaft 131, and the right rotating bracket 121 includes a right fixing plate for fixing with the right baffle 120 and a right connecting portion disposed on the right fixing plate and used for being sleeved on the rotating shaft 131.
In this embodiment, the left connecting portion includes an upper left connecting ring and a lower left connecting ring respectively disposed at the upper and lower ends of the left fixing plate, and the right connecting portion includes an upper right connecting ring and a lower right connecting ring respectively disposed at the upper and lower ends of the right fixing plate.
The above description is only given for the preferred exemplary illustration of the structure of the left and right connecting portions. In addition, the left connecting portion may also be only one connecting cavity, which is equivalent to one connecting sleeve, and the right connecting portion may also be only one connecting cavity, which is equivalent to one connecting sleeve.
In this embodiment, the partition board is connected to the left rotating bracket 111 and/or the right rotating bracket 121 through a rotating shaft 131, and the rotating shaft 131 is provided with a torsion spring 132 for generating a resilient force in a predetermined direction for the left baffle 110 and/or the right baffle 120.
Specifically, in this embodiment, the left connecting portion is sleeved on the rotating shaft 131, so as to connect the left rotating bracket 111 and the rotating shaft 131. The left baffle 110 and the left fixing plate on the left rotating support 111 are respectively provided with a connecting hole, the left fixing plate on the left rotating support 111 is fixedly connected with the left baffle 110 through fixing components 112 such as a blind rivet, a screw, a bolt and the like, and the left connecting part on the left rotating support 111 rotates around the rotating shaft 131 to drive the left baffle 110 to rotate relative to the partition plate, so that the left baffle 110 is located at different positions.
Specifically, in this embodiment, the right connecting portion is sleeved on the rotating shaft 131 to connect the right rotating bracket 121 and the rotating shaft 131. The right baffle 120 and the right fixing plate on the right rotating bracket 121 are respectively provided with a connecting hole, the right fixing plate on the right rotating bracket 121 is fixedly connected with the right baffle 120 through fixing components 112 such as a blind rivet, a screw, a bolt and the like, and the right connecting part on the right rotating bracket 121 rotates around the rotating shaft 131 to drive the right baffle 120 to rotate relative to the baffle, so that the right baffle 120 is located at different positions.
In this embodiment, the Torsion Spring 132 is a Torsion Spring (Torsion Spring), the Torsion Spring 132 is sleeved on the rotating shaft 131, the end of the Torsion Spring 132 is disposed on the baffle, when the baffle rotates around the center of the Torsion Spring 132 due to an external force, the Torsion Spring 132 generates a torque or a rotational force, and when the external force disappears, the Torsion Spring 132 rebounds the baffle to the initial position through the torque or the rotational force.
Specifically, in the present embodiment, when the partition is only connected to the left baffle 110 or the right baffle 120, the number of the torsion springs 132 is one. When the partition is simultaneously connected to the left barrier 110 and the right barrier 120, the number of the torsion springs 132 is two. The end of a torsion spring 132 is disposed on the surface of the left baffle 110, the end of a torsion spring 132 is disposed on the surface of the right baffle 120, when the fan 300 is installed in the fan slot corresponding to the left baffle 110, the fan 300 applies an outward pushing force to the left baffle 110, the left baffle 110 is pushed open to a position parallel to the baffles, at this time, after the left baffle 110 rotates around the center of the torsion spring 132 due to an external force, the torsion spring 132 generates a torque or a rotating force, when the fan 300 is pulled out of the fan slot, the external force applied to the left baffle 110 disappears, and the torsion spring 132 rebounds the left baffle 110 to the initial position through the torque or the rotating force; when the fan 300 is installed in the fan slot corresponding to the right baffle 120, the fan 300 applies an outward thrust to the right baffle 120, the right baffle 120 is pushed away to a position parallel to the baffle, at this time, after the right baffle 120 is rotated around the center of the torsion spring 132 by an external force, the torsion spring 132 generates a torque or a rotational force, when the fan 300 is pulled out of the fan slot, the external force applied to the right baffle 120 disappears, and the torsion spring 132 rebounds the right baffle 120 to the initial position by the torque or the rotational force.
Therefore, in this embodiment, the left baffle 110 and the right baffle 120 corresponding to the same fan slot position can be rotated outward relative to the fan slot position to expand to be parallel to the partition plate when receiving the thrust generated by the fan 300 being loaded into the fan slot position, so that the fan slot position is opened, and when the fan 300 is pulled out of the fan slot position, the resilience force generated by the torsion spring 132 is butted and closed relative to the fan slot position, so that the fan slot position is blocked by the two baffles, and the air duct can be automatically blocked by the left baffle 110 and the right baffle 120 which are automatically rebounded after the fan 300 is pulled out.
In this embodiment, the rotating shaft 131 is further provided with a blocking member for controlling the longitudinal movement distance of the torsion spring 132, the left connecting portion and/or the right connecting portion of the rotating shaft 131.
Wherein, the blocking member is but not limited to an E-shaped clamp spring 133. The E-shaped clamp spring 133 is also called an E-shaped retainer ring, belongs to one type of fastener, and plays a role in preventing axial movement of parts on the shaft.
In this embodiment, the partition plate is provided with a slot 134 matching with the rotating shaft 131 for accommodating a part of the rotating shaft 131. The slot 134 has a locking portion for fixing the rotating shaft 131, and preferably, the slot 134 has two locking portions, one upper locking portion and one lower locking portion, for fixing two ends of the rotating shaft 131.
In order to further understand the backflow-preventing fan wind-guard 100 in the present embodiment, the following description will further describe the usage of the backflow-preventing fan wind-guard 100 in the present embodiment by taking two or more fan slots as an example.
First, in the present embodiment, the assembly process of the backflow prevention fan wind guard 100 is:
the left baffle 110 is fixed on the left rotary bracket 111 by two short rivets, the right baffle 120 is fixed on the right rotary bracket 121 by two short rivets, the left connecting part of the left rotary bracket 111, the right connecting part of the right rotary bracket 121 and the torsion spring 132 are respectively placed into the groove 134 of the baffle, then the rotating shaft 131 penetrates through the left connecting part of the left rotary bracket 111 and the right connecting part of the right rotary bracket 121 from bottom to top, and finally the E-shaped snap spring 133 is embedded into the groove of the rotating shaft 131 to complete the installation of the baffle and the baffle.
When the fan 300 is not located in the fan slot, under the action of the torsion spring 132, the left baffle 110 and the right baffle 120 of the backflow-preventing fan wind deflector 100 are in a "door-closed" state as shown in fig. 5, the left baffle 110 and the right baffle 120 corresponding to the fan slot are butted and closed, so that the fan slot is blocked by the left baffle 110 and the right baffle 120, and the left baffle 110 and the right baffle 120 of the backflow-preventing fan wind deflector 100 are in a "door-closed" state as shown in fig. 5. When the fan 300 is installed in a fan slot, the fan 300 applies an outward moving thrust to the left baffle 110 and the right baffle 120 corresponding to the fan slot, and when the left baffle 110 and the right baffle 120 receive the thrust generated by the installation of the fan 300 in the fan slot, the left baffle 110 and the right baffle 120 can rotate outward relative to the fan slot and expand to be parallel to the partition plate, so that the fan slot is opened, that is, the fan 300 is inserted into the fan slot, and the backflow-preventing fan wind guard 100 is slowly pushed open until the fan wind guard is completely opened, as shown in fig. 6. On the contrary, when the fan 300 is pulled out of the fan slot, the left baffle 110 and the right baffle 120 are butted and closed relative to the fan slot by resilience force, so that the fan slot is blocked by the left baffle 110 and the right baffle 120, that is, when the fan 300 is pulled out of the fan slot, the left baffle 110 and the right baffle 120 of the backflow-proof fan wind guard 100 rebound under the action of the torsion spring 132 and return to the door-closed state of fig. 5 again, and the fan slot at the moment is blocked, so that the air leakage condition is avoided, and the design purpose is achieved.
Compared with the traditional single-groove-position backflow-preventing plate, the backflow-preventing fan wind guard 100 of the embodiment is mainly characterized in that the limited space of the middle level is utilized to fix the left and right doors, and thus the depth space occupied by the door-opening rear baffle is halved.
Fig. 1 shows an eight-slot configuration of 2 × 4, and the backflow-preventing fan wind-guard 100 of the present embodiment is also applicable to slot application scenarios such as 1 × 1, 1 × 2, 2 × 1, 2 × 2, and the like.
The utility model also provides a machine case 200, machine case 200 uses as above the fan deep bead 100 of anti-return. The backflow preventing fan wind guard 100 has been described in detail above, and will not be described in detail.
To sum up, the utility model discloses in set up two rotatable baffles at every fan trench, two baffles can be relatively this fan trench expand to make with the baffle parallel outside is rotatory when receiving the thrust that the fan trench produced of packing into the fan trench is opened, pulls out at the fan this fan trench butt joint closure makes through the resilience force when the fan trench is blocked by two baffles, so the utility model discloses can separate the fender to the wind channel automatically after pulling out the fan, prevent that the distinguished and admirable from running off in the wind channel, solve the extravagant problem of amount of wind, reduced to the radiating influence of server inside after pulling out the fan, guaranteed the stability of server, moreover the utility model discloses still have simple structure, economical and practical's advantage. Therefore, the utility model has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a fan deep bead of anti-return which characterized in that: the method comprises the following steps:
at least one pair of baffles, each pair of baffles comprises a left baffle and a right baffle;
the left baffle and the right baffle are respectively and correspondingly rotatably connected to the top ends of the two partition plates corresponding to each fan slot position, the left baffle and the right baffle corresponding to the same fan slot position can be outwards rotated and unfolded relative to the fan slot position to be parallel to the partition plates when receiving thrust generated by the fan when the fan is installed into the fan slot position, so that the fan slot position is opened, and the fan slot position is blocked by the left baffle and the right baffle through the butt joint and closing of resilience force relative to the fan slot position when the fan is pulled out of the fan slot position; the partition board is correspondingly arranged at the edge of the fan groove and is parallel to the direction of the fan in which the fan is installed and pulled out.
2. The backflow-preventing fan wind guard according to claim 1, wherein: the adjacent left baffle and the right baffle corresponding to different fan groove positions are connected to the same partition plate.
3. The backflow-preventing fan wind guard according to claim 1 or 2, wherein: the left baffle is connected with the corresponding partition plate through a left rotating bracket, and the right baffle is connected with the corresponding partition plate through a right rotating bracket; the left baffle plate is fixedly connected with the left rotating support through a fixing component, and the right baffle plate is fixedly connected with the right rotating support through a fixing component.
4. The backflow-preventing fan wind guard according to claim 3, wherein: the baffle through the pivot with left revolving rack and/or right revolving rack links to each other, just the pivot facial make left baffle and/or right baffle is according to presetting the torsional spring that the direction produced the resilience force.
5. The backflow-preventing fan wind guard according to claim 4, wherein: the left rotating support comprises a left fixing plate and a left connecting portion, the left fixing plate is used for fixing the left baffle, the left rotating support is arranged on the left fixing plate in a sleeved mode, the left connecting portion is arranged on the rotating shaft, the right rotating support comprises a right fixing plate and a right connecting portion, the right fixing plate is used for fixing the right baffle, the right fixing plate is used for the sleeved mode, and the right connecting portion is arranged on the rotating shaft.
6. The backflow-preventing fan wind guard according to claim 5, wherein: the left connecting portion comprises an upper left connecting ring and a lower left connecting ring which are respectively arranged at the upper end and the lower end of the left fixing plate, and the right connecting portion comprises an upper right connecting ring and a lower right connecting ring which are respectively arranged at the upper end and the lower end of the right fixing plate.
7. The backflow-preventing fan wind guard according to claim 5, wherein: the rotating shaft is also provided with a blocking piece for controlling the longitudinal movement distance of the torsion spring, the left connecting part and/or the right connecting part on the rotating shaft.
8. The backflow-preventing fan wind guard according to claim 7, wherein: the blocking piece is an E-shaped clamp spring.
9. The backflow-preventing fan wind guard according to claim 5, wherein: the baffle is provided with a groove body which is matched with the rotating shaft and is used for accommodating part of the rotating shaft.
10. A chassis, its characterized in that: the chassis employs the backflow-preventing fan wind guard of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118008.5U CN212302388U (en) | 2020-06-16 | 2020-06-16 | Anti-backflow fan wind shield and case applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118008.5U CN212302388U (en) | 2020-06-16 | 2020-06-16 | Anti-backflow fan wind shield and case applying same |
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| Publication Number | Publication Date |
|---|---|
| CN212302388U true CN212302388U (en) | 2021-01-05 |
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| CN202021118008.5U Active CN212302388U (en) | 2020-06-16 | 2020-06-16 | Anti-backflow fan wind shield and case applying same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391680A (en) * | 2021-06-11 | 2021-09-14 | 上海顺诠科技有限公司 | Anti-return cabinet |
-
2020
- 2020-06-16 CN CN202021118008.5U patent/CN212302388U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391680A (en) * | 2021-06-11 | 2021-09-14 | 上海顺诠科技有限公司 | Anti-return cabinet |
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