CN216240333U - a window ventilation panel - Google Patents
a window ventilation panel Download PDFInfo
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- CN216240333U CN216240333U CN202122626880.1U CN202122626880U CN216240333U CN 216240333 U CN216240333 U CN 216240333U CN 202122626880 U CN202122626880 U CN 202122626880U CN 216240333 U CN216240333 U CN 216240333U
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Abstract
The utility model provides a window ventilating plate, which belongs to the field of house ventilating equipment and comprises a perforated plate, wherein the perforated plate comprises a supporting framework and a baffle plate, the supporting framework is formed by connecting a plurality of framework sectional materials, the baffle plate is fixedly arranged on one side of the supporting framework, a ventilating opening is formed in the baffle plate, and the window ventilating plate is fixedly arranged on one side of a window, so that the window can be reformed to form the required ventilating opening without damaging the wall; meanwhile, the ventilation board has better universality by arranging the extension board on the ventilation board, can adapt to windows with different specifications and sizes, and can realize quick and convenient adjustment of the length of the ventilation board by matching with a sliding fixing structure in the ventilation board.
Description
Technical Field
The utility model belongs to the field of house ventilation equipment, and particularly relates to a window ventilation plate which is suitable for reforming a window and is convenient to install.
Background
The household appliances can facilitate life, effectively improve the living standard and become indispensable products in people's life. Electrical products in a household will also increase gradually, however, some electrical products, especially electrical products of the fresh air system, need an outdoor ventilation opening to achieve their functions, such as an exhaust fan, an air conditioner, a range hood, etc. Therefore, when the electrical products are installed, holes are often reserved on the wall or holes are often formed in the wall, which causes inconvenience for installation.
SUMMERY OF THE UTILITY MODEL
Based on the problems in the prior art, the utility model provides a window ventilation plate which comprises a perforated plate, wherein the perforated plate comprises a support framework and a baffle, the support framework is formed by connecting a plurality of framework sectional materials, the baffle is fixedly installed on one side of the support framework, and a ventilation opening is formed in the baffle.
The support framework is rectangular and is divided into a fixing area and a ventilation area in the length direction through a framework section, the baffle comprises a fixing plate, a first pore plate and a second pore plate which are spliced with each other, one side, close to each other, of the first pore plate and the second pore plate is provided with a semicircular notch, the first pore plate and the second pore plate are fixedly installed on one side of the ventilation area and spliced with each other to enable the two semicircular notches to form a complete ventilation opening, the fixing plate is fixedly installed on the fixing area, a movable cover plate is detachably installed on the other side of the ventilation area of the support framework, and the movable cover plate covers the ventilation opening.
The window ventilating plate further comprises a first extending sliding plate and a second extending sliding plate, the first extending sliding plate comprises a U-shaped frame, the U-shaped frame consists of three U-shaped framework section bars which are connected end to end and formed into a U shape, and one side of the U-shaped frame is fixedly provided with a fixing plate; the second extension sliding plate comprises a rectangular frame, the rectangular frame consists of four framework section bars which are connected end to end and form a rectangle, and one side of the rectangular frame is fixedly provided with a fixed plate; the support framework part corresponding to the fixing area in the perforated plate is U-shaped, the width of the U-shaped part of the support framework is consistent with that of the U-shaped frame, and the width of the rectangular frame is equal to that of the inner wall of the U-shaped frame; the perforated plate is sleeved at one end of one side of the second extension sliding plate, which is not provided with the fixed plate, through the sliding sleeve of the U-shaped part of the supporting framework, and the first extension sliding plate is sleeved at the other end of one side of the second extension sliding plate, which is not provided with the fixed plate, through the sliding sleeve of the U-shaped frame.
The framework section bar is characterized in that the section of the framework section bar is rectangular, the middle part of the section is a small rectangle with a central round hole, four corners of the section are respectively four small rectangles with right-angle extension sides, the four right-angle extension sides are symmetrically distributed in the center, the right-angle extension sides are superposed with the four corners of the section, and the four corners of the small rectangle with the central round hole are respectively connected to the small rectangles with the right-angle extension sides on the four corners of the section along diagonal lines, so that the four sides of the framework section bar form a sliding chute; the framework profiles are connected through sliding corners, the sliding corners are right-angle-shaped, the cross sections of the sliding corners are matched with the sliding grooves, the cross sections of the sliding corners are rectangular, trapezoidal side wings are arranged on two sides of the rectangle, the side wing of one right-angle side of the sliding corners covers the whole right-angle side, and the side wing of the other right-angle side covers half of the length of the right-angle side; the frame section bars among the perforated plate, the first extension sliding plate and the second extension sliding plate are connected in a sliding mode through sliding corners.
Wherein, two right-angle sides of the sliding corner are respectively provided with a bolt hole; the movable cover plate is fixedly arranged on the supporting framework through a magic tape.
The window ventilating plate further comprises a sliding fixing structure, the sliding fixing structure comprises a positioning rack, a pop-up clamping rod, a pull rope, a handle and a box seat, the positioning rack is fixedly arranged on a framework section bar, the framework section bar is in sliding contact with a perforated plate and a first extension sliding plate and a second extension sliding plate, the tooth surface of the positioning rack is close to the second extension sliding plate, the pop-up clamping rod is arranged on the framework section bar, the two ends of the second extension sliding plate are perpendicular to the sliding direction, one end of the pop-up clamping rod is fixedly connected with a return spring, and the other end of the pop-up clamping rod is a clamping part matched with the positioning rack; the return spring is connected to the framework section bar; the box seat is fixedly arranged on the fixing plate of the second extension sliding plate, and a plurality of shifting grooves are formed in the box seat; the handle is slidably arranged on the box seat, a plurality of shifting rods which correspond to the shifting grooves one by one are arranged on the handle, and the shifting rods are driven to slide in the shifting grooves by the sliding of the handle; the both sides of the same end of fixed plate of second extension slide respectively are provided with one and pop out kelly and reset spring, and two pop out kellies pop out opposite direction and with the location rack phase-match that corresponds one side, cable one end fixed connection to one of them pop out the kelly and be provided with reset spring's one end, the other end of cable passes to be connected to another one and pops out the kelly and be provided with reset spring's one end behind groove and the driving lever of dialling, and the slip through the handle drives two and pops out the kellies and slide to the axis direction of second extension slide.
The spring clamping rod is connected with a reset spring, a fixing portion used for connecting a pull cable is arranged at one end of the spring clamping rod, and the fixing portion is eccentrically connected with the pull cable.
The box seat is fixedly provided with a box cover, and the box cover shields the shifting groove and the shifting rod, so that the attractiveness can be improved, and dust can be prevented to a certain extent.
The utility model has the beneficial effects that:
1. the window ventilating plate can be used for reforming a window, ventilating holes required by electrical products are formed in the window, the wall is not required to be damaged, the mounting difficulty is greatly reduced, the original structural strength of the wall is not influenced, and the window ventilating plate is convenient to dismantle.
2. The setting of first extension slide and second extension slide makes the ventilation board can stretch out and draw back the adjustment according to actual demand, can adapt to the window of different dimensions, makes the product have high commonality.
3. Through the setting of slip fixed knot structure, make the flexible more convenient of ventilating board, carry the handle and draw and to pop out the kelly removal through the cable drive earlier to remove the reciprocal fixed relation who pops out between kelly and the fixed rack, then remove second extension slide and realize flexible, loosen the handle after, pop out kelly automatic re-setting and resume relatively fixed state under reset spring's effect.
Drawings
Fig. 1 is a schematic structural view of a window ventilation board according to an embodiment.
Fig. 2 is another schematic view of an angle structure of a window ventilation board according to the first embodiment.
Fig. 3 is a schematic structural view of a window ventilation board according to a second embodiment.
Fig. 4 is a schematic structural view of a window ventilation board in the third embodiment.
Fig. 5 is a schematic view of a first elongated slide.
Fig. 6, a schematic view of the connection of the framework profiles and the sliding corners.
Fig. 7 is a schematic view of the structure of the sliding corner.
FIG. 8 is a schematic view of the connection of the perforated plate and the second elongate slide.
Fig. 9 is a schematic connection diagram of the sliding fixing structure in the fourth embodiment, and the stay cable is shown in a perspective manner in order to facilitate understanding of the connection manner of the stay cable.
Fig. 10, exploded view of the handle, holder and lid.
Fig. 11, a schematic view of the snap-fit of the positioning rack and the ejector catch lever.
Fig. 12 is an exploded view of a window ventilation board according to the fourth embodiment.
Detailed Description
The utility model is described in detail below with reference to the figures and the specific embodiments.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The first embodiment is as follows:
as shown in fig. 1, 2, 6 and 7, the window ventilating plate includes a perforated plate 1, the perforated plate 1 includes a supporting framework 2 and a baffle 3, the supporting framework 2 is a zigzag structure formed by connecting five framework sections 4, the supporting framework 2 is rectangular in shape and is divided into a fixing area and a ventilating area in the length direction by one framework section 4, the baffle 3 includes a fixing plate 3a, a first perforated plate 3b and a second perforated plate 3c which are spliced with each other, semicircular gaps are arranged on the sides of the first perforated plate 3b and the second perforated plate 3c which are close to each other, the first perforated plate 3b and the second perforated plate 3c are fixedly installed on one side of the ventilating area and spliced with each other to form a complete ventilating opening 5, the ventilating opening 5 can be used for installing an exhaust fan or serving as a hole for the air conditioning duct to enter and exit, and the fixing plate 3a is fixedly installed on the fixing area, support frame 2 opposite side in the ventilation zone pass through the magic and paste detachable and install removable cover 6, removable cover 6 shelter from vent 5.
As a preferred embodiment, the cross section of the framework section bar 4 is rectangular, the middle part of the cross section is a small rectangle with a central circular hole 41, the four corners of the cross section are four small rectangles with right-angle extended sides 42 which are distributed centrosymmetrically, the right-angle extended sides 42 coincide with the four corners of the cross section, the four corners of the small rectangle with the central circular hole 41 are respectively connected to the small rectangles with the right-angle extended sides 42 on the four corners of the cross section along the diagonal lines, so that the four sides of the framework section bar 4 respectively form a sliding slot 43; the framework sections 4 are connected through the sliding corners 9, the sliding corners 9 are right-angled and matched with the sliding grooves 43 in cross section shape, the cross section of each sliding corner 9 is rectangular, trapezoidal side wings 91 are arranged on two sides of each rectangle, the side wing 91 of one right-angled side of each sliding corner 9 covers the whole right-angled side, the side wing 91 of the other right-angled side covers half of the length of the right-angled side, gaps are reserved on the side wings 91 of the right-angled side, and the phenomenon that the sliding corners 9 cannot be completely inserted into a right angle formed by the two framework sections 4 due to the fact that the whole right-angled side is not completely covered can be avoided; two right-angle edges of the sliding corner 9 are respectively provided with a bolt hole 92, and bolts can be driven through the bolt holes 92, so that the relative position between the sliding corner 9 and the framework section bar 4 is fixed.
Example two:
the difference between the first embodiment and the second embodiment is that the second extension sliding plate 8 in sliding connection is added to the window ventilation plate in the first embodiment, so that the window ventilation plate has a telescopic function, as shown in fig. 1, 3, 6, 7 and 8, the window ventilation plate further comprises the second extension sliding plate 8, the second extension sliding plate 8 comprises a rectangular frame, the rectangular frame is composed of four framework section bars 4 which are connected end to end and form a rectangle, and one side of the rectangular frame is fixedly provided with a fixing plate 3 a; the supporting framework 2 part corresponding to the fixing area in the perforated plate 1 is in a U shape, namely, compared with the embodiment, one framework section 4 is installed, and the width of the rectangular frame is equal to the width of the inner wall of the U-shaped part of the supporting framework 2; the perforated plate 1 is sleeved at one end of one side of the second extension sliding plate 8, which is not provided with the fixed plate 3a, through the sliding of the U-shaped part of the support framework 2, the framework section bars 4 between the perforated plate 1 and the second extension sliding plate 8 are in sliding connection through the sliding corners 9, under the guidance of the sliding corners 9 and the sliding grooves 43, the perforated plate 1 and the second extension sliding plate 8 can be far away from or close to each other to slide, so that the extension and the shortening are realized, and the window frame is suitable for windows with different specifications and sizes.
Example three:
the difference between the embodiment and the embodiment is that the window ventilating board in the embodiment is additionally provided with the first extension sliding plate 7 in sliding connection, so that the window ventilating board has a telescopic function and is convenient to transport and store, as shown in fig. 1, 4, 5, 6, 7 and 8, the window ventilating board further comprises the first extension sliding plate 7, the first extension sliding plate 7 comprises a U-shaped frame, the U-shaped frame consists of three framework section bars 4 which are connected end to end and form a U shape, and one side of the U-shaped frame is fixedly provided with a fixing plate 3 a; the support framework 2 corresponding to the fixing area in the perforated plate 1 is U-shaped, the width of the U-shaped part of the support framework 2 is consistent with that of the U-shaped frame, and the width of the rectangular frame is equal to that of the inner wall of the U-shaped frame; the perforated plate 1 is sleeved at one end of one side, which is not provided with the fixed plate 3a, of the second extension sliding plate 8 in a sliding manner through the U-shaped part of the support framework 2, the first extension sliding plate 7 is sleeved at the other end of one side, which is not provided with the fixed plate 3a, of the second extension sliding plate 8 in a sliding manner through the U-shaped frame, namely, the perforated plate 1, the first extension sliding plate 7 and the framework section bars 4 of the second extension sliding plate 8 are positioned in the same plane, the perforated plate 1 and the fixed plate 3a of the first extension sliding plate 7 are positioned in the plane of one side of the framework section bars 4, and the fixed plate 3a of the second extension sliding plate 8 is positioned in the plane of the other side of the framework section bars 4; the frame section bars 4 among the perforated plate 1, the first extension sliding plate 7 and the second extension sliding plate 8 are in sliding connection through the sliding corners 9, so that the ventilation plate can be divided into three parts, the transportation and the storage are convenient, the extension and the contraction can be realized, and the ventilation plate is suitable for windows with different specifications and sizes.
Example four:
the difference between this embodiment and the embodiment is that the window ventilation board in this embodiment further adds a sliding fixing structure to facilitate the operation of the window ventilation board in the telescopic sliding, such as the window ventilation board shown in fig. 1, 4-12, a set of sliding fixing structures is installed at both ends of the second extension sliding plate 8, the sliding fixing structures include two positioning racks 11, two pop-up clamping rods 12, a pulling cable 13, a handle 14 and a box base 15, the positioning racks 11 are fixed on the frame profiles 4 where the perforated plate 1 and the first extension sliding plate 7 are in sliding contact with the second extension sliding plate 8, the frame profiles 4 at both sides are respectively provided with one positioning rack 11, and the tooth surface of the positioning rack 11 is close to the second extension sliding plate 8, the pop-up clamping rods 12 are slidably arranged on the frame profiles 4 at both ends of the second extension sliding plate 8 perpendicular to the sliding direction, in the embodiment, the pop-up clamping rod 12 is slidably mounted at the central circular hole 41 of the framework section bar 4, and one end of the pop-up clamping rod 12 is fixedly connected with the return spring 16, and the other end is provided with a clamping part 17 matched with the positioning rack 11; in the embodiment, a hole is formed at a proper position of the framework section bar 4, then the mounting plate 18 is inserted into the framework section bar, and then the return spring and the pop-up clamping rod 12 slide in from the central round hole 41, so that the mounting is completed; the box seat 15 is fixedly arranged on the fixing plate 3a of the second extension sliding plate 8, and four shifting grooves 19 are formed in the box seat 15; the handle 14 is slidably mounted on the box base 15, four shift levers 20 corresponding to the shift grooves 19 one by one are arranged on the handle 14, and the shift levers 20 are driven by the sliding of the handle 14 to slide in the shift grooves 19; the both sides of the same end of fixed plate 3a of second extension slide 8 respectively are provided with one and pop out kelly 12 and reset spring 16, and two pop out kellies 12 pop out opposite direction and with the location rack 11 phase-match that corresponds one side, 13 one end fixed connection of cable 13 be provided with reset spring 16's one end to one of them pop out kelly 12, the other end of cable 13 passes and is connected to another one of them pop out kelly 12 and be provided with reset spring 16's one end behind group groove 19 and the driving lever 20, and the slip through handle 14 drives two and pops out kellies 12 and slide to the axis direction of second extension slide 8.
In a preferred embodiment, one end of the pop-up latch rod 12 connected with the return spring 16 is provided with a fixing part 21 for connecting the inhaul cable 13, and the fixing part 21 is eccentrically connected; in the embodiment, when the box is used, one of the handles 14 is pulled by a hand, the handle 14 slides (upwards or downwards) relative to the box base 15, the pull cable 13 penetrates through the pull rod 20 and the shifting groove 19 simultaneously, the sliding of the handle 14 drives the shifting groove 19 to slide, so that the pull cable 13 is contracted from the middle part, the two pop-up clamping rods 12 are pulled inwards, the fixed connection between the pop-up clamping rods 12 and the positioning rack 11 is released, and the handle 14 is continuously pulled by a hand to drive the second extension sliding plate 8 to slide relatively, so that the extension and the shortening are realized. When loosening the hand, under reset spring's effect, two pop out kellies 12 pop out once more and with location rack 11 fixed connection once more, only need the pulling of people's hand once can realize removing to inject and flexible slip, it is more convenient to operate, has better use and experiences.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a window ventilation board, includes perforated plate (1), its characterized in that, perforated plate (1) including support skeleton (2) and baffle (3), support skeleton (2) connect by a plurality of skeleton section bars (4) and constitute, baffle (3) fixed mounting to the one side of support skeleton (2), baffle (3) on be provided with vent (5).
2. A window ventilation board according to claim 1, characterized in that the supporting frame (2) is rectangular and is divided into a fixing area and a ventilation area by a frame profile (4), the baffle (3) comprises a fixing plate (3a), a first orifice plate (3b) and a second orifice plate (3c) which are spliced with each other, semicircular gaps are arranged on the sides of the first orifice plate (3b) and the second orifice plate (3c) which are close to each other, the first orifice plate (3b) and the second orifice plate (3c) are fixedly arranged on one side of the ventilation area and are spliced with each other to form a complete ventilation opening (5), the fixing plate (3a) is fixedly arranged on the fixing area, a movable cover plate (6) is detachably arranged on the other side of the ventilation area of the supporting frame (2), the movable cover plate (6) shields the ventilation opening (5).
3. A window ventilation board according to claim 2, characterized in that it further comprises a first elongate sliding board (7) and a second elongate sliding board (8), said first elongate sliding board (7) comprising a U-shaped frame, said U-shaped frame consisting of three U-shaped frame profiles (4) connected end to end, said U-shaped frame having a fixed plate (3a) fixedly arranged on one side thereof; the second extension sliding plate (8) comprises a rectangular frame, the rectangular frame consists of four framework section bars (4) which are connected end to end and form a rectangle, and one side of the rectangular frame is fixedly provided with a fixed plate (3 a); the supporting framework (2) corresponding to the fixing area in the perforated plate (1) is U-shaped, the width of the U-shaped part of the supporting framework (2) is consistent with that of the U-shaped frame, and the width of the rectangular frame is equal to that of the inner wall of the U-shaped frame; the one end that second extension slide (8) did not set up one side of fixed plate (3a) is established to gliding cover of U-shaped part through supporting framework (2) in foraminiferous plate (1), first extension slide (7) establish the other end that second extension slide (8) did not set up one side of fixed plate (3a) through the gliding cover of U-shaped frame.
4. A window ventilation board according to claim 3, characterized in that the cross section of the frame profile (4) is rectangular and the middle of the cross section is a small rectangle with a central circular hole (41), the four corners of the cross section are four small rectangles with right-angled extension sides (42) which are distributed centrally and symmetrically, the right-angled extension sides (42) coincide with the four corners of the cross section, the four corners of the small rectangle with the central circular hole (41) are respectively connected to the small rectangles with the right-angled extension sides (42) at the four corners of the cross section along the diagonal lines, so that the four sides of the frame profile (4) form a sliding slot (43); the framework profiles (4) are connected through sliding corners (9), the sliding corners (9) are right-angled, the cross sections of the sliding corners (9) are matched with the sliding grooves (43), the cross sections of the sliding corners (9) are rectangular, trapezoidal side wings (91) are arranged on two sides of the rectangle, the side wing (91) on one right-angled side of the sliding corners (9) covers the whole right-angled side, and the side wing (91) on the other right-angled side covers half of the length of the right-angled side; the framework section bars (4) among the perforated plate (1), the first extension sliding plate (7) and the second extension sliding plate (8) are in sliding connection through sliding corners (9).
5. A window ventilation board according to claim 4, characterized in that the two right-angled sides of the sliding corner (9) are each provided with a bolt hole (92); the movable cover plate (6) is fixedly arranged on the supporting framework (2) through a magic tape.
6. The window ventilation board according to claim 5, characterized in that the window ventilation board further comprises a sliding fixing structure, the sliding fixing structure comprises a positioning rack (11), an ejecting clamping rod (12), a pull rope (13), a handle (14) and a box base (15), the positioning rack (11) is fixedly arranged on the framework section bar (4) which is in sliding contact with the perforated plate (1) and the first extension sliding plate (7) and the second extension sliding plate (8), the tooth surface of the positioning rack (11) leans against the second extension sliding plate (8), the ejecting clamping rod (12) is slidably arranged on the framework section bar (4) which is perpendicular to the sliding direction at two ends of the second extension sliding plate (8), one end of the ejecting clamping rod (12) is fixedly connected with a return spring (16), and the other end is a clamping part (17) which is matched with the positioning rack (11); the return spring (16) is connected to the framework section bar (4) where the return spring is located; the box seat (15) is fixedly arranged on the fixing plate (3a) of the second extension sliding plate (8), and a plurality of shifting grooves (19) are formed in the box seat (15); the handle (14) is slidably mounted on the box base (15), the handle (14) is provided with a plurality of shifting rods (20) which correspond to the shifting grooves (19) one by one, and the shifting rods (20) are driven by the sliding of the handle (14) to slide in the shifting grooves (19); the both sides of the same end of fixed plate (3a) of second extension slide (8) respectively are provided with one and pop out kelly (12) and reset spring (16), and the pop-up opposite direction of two pop-up kellies (12) and with the location rack (11) phase-match that correspond one side, cable (13) one end fixed connection to one of them pop-up kelly (12) and be provided with the one end of reset spring (16), the other end of cable (13) passes and is connected to the one end that another popped out kelly (12) and be provided with reset spring (16) behind groove (19) and driving lever (20), and the slip through handle (14) drives two and pops out kellies (12) and slides to the axis direction of second extension slide (8).
7. A window ventilation board according to claim 6, characterized in that the end of the ejector catch lever (12) to which the return spring (16) is attached is provided with a fixing portion (21) for attaching a pulling cable (13), the fixing portion (21) being eccentrically attached.
8. A window ventilation board according to claim 7, characterized in that the box base (15) is fixedly provided with a box cover (22), and the box cover (22) shields the shifting groove (19) and the shifting rod (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122626880.1U CN216240333U (en) | 2021-10-29 | 2021-10-29 | a window ventilation panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122626880.1U CN216240333U (en) | 2021-10-29 | 2021-10-29 | a window ventilation panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216240333U true CN216240333U (en) | 2022-04-08 |
Family
ID=80992990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122626880.1U Expired - Fee Related CN216240333U (en) | 2021-10-29 | 2021-10-29 | a window ventilation panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216240333U (en) |
-
2021
- 2021-10-29 CN CN202122626880.1U patent/CN216240333U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220408 |