Slidable locking type airtight container

Abstract

A slidable locking type airtight container, comprising a body, an upper lid, and slidable locking members. First fixing structures are provided on a flange of an opening of the body; the upper lid is provided with first side frames and second side frames; each first side frame is provided with limiting portions comprising slots and side limiting members; each slidable locking member is provided on a corresponding second side frame and can switch between a locked position and an unlocked position; each slidable locking member is provided with insertion ends, a second fixing structure, and a block plate; a positioning insertion piece is provided at each insertion end; and when the slidable locking members are located in the locked position or the unlocked position, the insertion ends, the block plates, and the second fixing structures are respectively locked to or disengage from the side limiting members, the flange, and the first fixing structures, so as to rapidly lock or release the upper lid.

Description

BACKGROUND Technical Field The present disclosure relates to a crisper box, particularly to a slidable locking type airtight container that may quickly and easily lock and unlock the upper lid with sliding-locking sleeves. Description of Related Art With the rise of environmental awareness, sealed bags and crisper boxes are widely used in daily life to effectively seal and preserve items such as food or medicine. Most of the known crisper boxes usually achieve a sealing effect through locking a rubber sealing ring of an upper lid to an inner edge of a body. Although by above mechanism, a user may quickly seal the body with the upper lid, opening the sealed upper lid requires a significant amount of time and effort, which causes inconvenience in use. How to design a crisper box that can easily and quickly lock and unlock the upper lid to the body is an urgently desired improvement. In view of the above, the inventor seeks to overcome the aforementioned drawbacks associated with the current technology and aims to provide an effective solution through extensive researches along with utilization of academic principles and knowledge. SUMMARY A primary objective of the present disclosure is to quickly and easily lock and unlock the upper lid on the body, and to avoid the locked slidable locking members from shaking in any direction - left, right, front, back, or up and down - relative to the upper lid or the body. To accomplish the aforementioned objective, the present disclosure provides a slidable locking type airtight container comprising a body, an upper lid, and a pair of slidable locking members, the body comprises a bottom plate, a surrounding wall around the bottom plate, an opening is defined by the surrounding wall, a flange is extended from the opening of the surrounding wall and extended toward an outside of the body, two first fixing structures are respectively arranged on opposite sides of the flange, the upper lid is configured to hermetically cover the opening along a vertical direction, the upper lid comprises a pair of opposite first side frames and a pair of opposite second side frames, each of the first side frames comprises a pair of limiting portions, each of the limiting portions comprises a slot and a side limiting member, the slidable locking members are arranged opposite to each other in correspondence with the second side frames, each of the slidable locking members is configured to slide along the first side frames to switch between a locked position and an unlocked position, each of the slidable locking members comprises a pair of insertion ends, a second fixing structure, and an block plate, each of the insertion ends comprises a positioning insertion piece, when each of the slidable locking members is at the locked position, each of the positioning insertion pieces is inserted and fixed in each of the slots, each of the side limiting members is configured to block an outside of each of the insertion ends, each of the block plates is configured to block each of the flanges along the vertical direction, each of the second fixing structures is locked with each of the first fixing structures, when each of the slidable locking members is at the unlocked position, each of the insertion ends is separated from each of the side limiting members, each of the block plates is separated from each of the flanges, each of the second fixing structures is separated from each of the first fixing structures. Another aspect of the present disclosure provides that each of the slidable locking members comprises a pair of side strips and a connecting strip, the connecting strip is arranged corresponding to one of the second side frames, each of the side strips is connected to one of two ends of the connecting strip and covers a part of each first side frame, each of the insertion ends is arranged on an end of each of the side strips away from the connecting strip. Another aspect of the present disclosure provides that in each of the slidable locking members, the block plate is extended from an inner wall of the connecting strip and is misaligned with the flange in the vertical direction. Another aspect of the present disclosure provides that in each of the slidable locking members, a number of the second fixing structure is two, each of the second fixing structures is arranged on an inner wall of each of the side strips. Another aspect of the present disclosure provides that each of the first fixing structures is a clamping strip, each of the second fixing structures is a wedge block, two ends of each of the clamping strips respectively comprises a first clamping slope, each of the wedge blocks comprises a second clamping slope, each of the second clamping slopes is buckled with each of the first clamping slopes to fix each of the slidable locking members on the body when each of the slidable locking members is at the locked position, each of the second clamping slopes is separated from each of the first clamping slopes when each of the slidable locking members is at the unlocked position. Another aspect of the present disclosure provides that each of the first side frames comprises a pair of positioning convex-strips, each of the positioning convex-strips is arranged corresponding to each of the limiting portions, each of the side strips comprises a pair of positioning notches arranged at intervals, each of the positioning convex-strips is selectively stuck inside one of the positioning notches of the corresponded side strip. Another aspect of the present disclosure provides that the upper lid comprises a pair of indentations, each of the indentations is arranged beside each of the second side frames, each of the indentations comprises a stopping surface, each of the connecting strips comprises a barb, each of the barbs is buckled with corresponding one of the stopping surfaces when each of the slidable locking members is at the unlocked position. Another aspect of the present disclosure provides that each of the positioning insertion pieces is extended from the corresponded insertion end along the first side frames. Another aspect of the present disclosure provides that each of the insertion ends is abutted against corresponding one of the limiting portions when each of the slidable locking members is at the locked position. Another aspect of the present disclosure provides that further comprising a sealing ring, the upper lid comprises a groove, the sealing ring is fixed in the groove and elastically abutted between the upper lid and the surrounding wall. The present disclosure is able to quickly and easily lock and unlock the upper lid on the body by sliding the slidable locking members to switch between the locked position and the unlocked position, and avoid the slidable locking members when locked from shaking in any direction—left, right, front, back, or up and down—relative to the upper lid or the body. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective appearance view of the present disclosure; FIG. 2 is an exploded view of the present disclosure; FIG. 3 is an exploded view of the upper lid and the slidable locking members of the present disclosure; FIG. 4 is a cross-sectional top view of the present disclosure at the locked position; FIG. 5 is another cross-sectional top view of the present disclosure at the locked position; FIG. 6 is a cross-sectional side view of the present disclosure at the locked position; FIG. 7 is another cross-sectional side view of the present disclosure at the locked position; FIG. 8 is a partially enlarged view of FIG. 7; FIG. 9 is a cross-sectional view of the anti-lift(baffling) plate of the present disclosure at the locked position; FIG. 10 is a cross-sectional top view of the present disclosure at the unlocked position; FIG. 11 is a partial cross-sectional side view of the present disclosure at the unlocked position; FIG. 12 is another partial cross-sectional side view of the present disclosure at the unlocked position; and FIG. 13 is an exploded view of the upper lid, the slidable locking members, and the body of the present disclosure. The signs in the drawings: 10: body; 11: bottom plate; 12: surrounding wall; 13: opening; 14: flange; 15: first fixing structure; 151: first clamping slope; 20: upper lid; 21 first side frame; 211: positioning convex-strip; 22: second side frame; 23: limiting portion; 231: slot; 232: side limiting member; 24: indentation; 241: stopping surface; 25: groove; 30: slidable locking member; 31: side strip; 311: positioning notch; 32: connecting strip; 321: barb; 33: insertion end; 331: positioning insertion piece; 34: second fixing structure; 341: second clamping slope; 35: block plate; 40: sealing ring; D:vertical direction. DETAILED DESCRIPTION It is to be understood that the terms for indicating positions and the location relation, for example “front”, “rear”, “left”, “right”, “front end”, “rear end”, “distal end”, “longitudinal direction”, “lateral direction”, “vertical direction”, “top” and “bottom”, are based on the positions and the location relation disclosed in the drawings, and only used for disclosing the present disclosure and not used for indicating or implying the specified location of the device or the components or the specified structure and operation in certain location, thus the present disclosure is not intended to be limiting. For example, the terms of “first”, “second”, “third”, “forth” and “fifth” are used for illustrating each unit, component, area, layer and / or part. The component, the unit, the area, the layer and / or the part are not limited by the terms. These terms are only used for separating the element, the assembly, the area, the layer, or the part. Unless being clearly indicated according to the whole specification, the terms for example “the first”, “the second”, “the third”, “the fourth” and “the fifth” are not used for implying the order or sequence. The technical contents of the present disclosure will become apparent with the detailed description of embodiments and the accompanied drawings as follows. However, it shall be noted that the accompanied drawings are for illustrative purposes only such that they shall not be used to restrict the scope of the present disclosure. The present disclosure provides a slidable locking type airtight container that is used to contain items such as food or medicine needing to keep fresh or moisture-proof. As shown in FIGs. 1, 2, and 3, the slidable locking type airtight container of the present disclosure includes a body 10, an upper lid 20, and a pair of slidable locking members 30. Please first refer FIG. 1 and FIG. 2, the body 10 includes a bottom plate 11 and a surrounding wall 12 around the bottom plate 11. In the embodiment, the bottom plate 11 is generally rectangular, but the bottom plate 11 is not limited to this specific shape. For example, the bottom plate 11 may also be square, circular or oval...etc. The surrounding wall 12 surrounds the bottom plate 11 to define a cavity (not shown in figures) and an opening 13 that communicate with to each other. A flange 14 is extended from the portion of the surrounding wall 12 defining the opening 13 and toward an outside of the body 10. That is the flange 14 in the embodiment is generally rectangular corresponding to the bottom plate 11 and the surrounding wall 12. Opposite sides of the flange 14 respectively has a first fixing structure 15. In detail, the first fixing structures 15 in the embodiment are arranged respectively on two longer sides of the flange 14. The specific structure of the first fixing structure 15 will be explained in the following paragraphs, so further detail thereof is omitted here for brevity. Please refer FIGs. 1, 2 and 3, the shape of the upper lid 20 is corresponding to the shape of the bottom plate 11, so the upper lid 20 in the embodiment is also generally rectangular. The upper lid hermetically covers the opening 13 of the surrounding wall 12 along a vertical direction D (depicted as an up-and-down direction in FIG. 2). The upper lid 20 has a pair of opposite first side frames 21 and a pair of opposite second side frames 22. In the embodiment, each first side frame 21 is corresponding to two longer sides of the surrounding wall 12, each second side frame 22 is corresponding to two shorter sides of the surrounding wall 12, but the scope of the present disclosure is not limited to this embodiment. Each first side frame 21 has a pair of limiting portions 23. The limiting portions 23 of each first side frame 21 are spaced apart from each other. Each limiting portion 23 defines a slot 231 and a side limiting member 232. In detail, please refer to FIG. 2, each slot 231 in the embodiment is defined on a top of each first side frame 21, each side limiting member 232 in the embodiment is formed at an outside of each first side frame 21. A plurality accommodation spaces (not labeled in figures) respectively for accommodating the insertion ends 33 described later is respectively defined between each side limiting member 322 and each corresponding first side frame 21. Please refer FIGs. 1, 2 and 3, the slidable locking members 30 are arranged opposite to each other in correspondence with the second side frames 22. Each slidable locking member 30 includes a pair of side strips 31 and a pair of connecting strip 32. Each connecting strip 32 is arranged corresponding to each second side frame 22. In each slidable locking members 30, each side strip 31 is connected to a respective one of the two ends of the connecting strip 32, and each side strip 31 covers a part of each first side frame 21. Each slidable locking member 30 has a pair of insertion ends 33, at least one second fixing structure 34, and at least one block plate (baffling plate) 35. Each insertion ends 33 is arranged on an end of each side strip 31 away from the connecting strip 32. Each insertion ends 33 has a positioning insertion piece 331 extended along the first side frames 21. The specific structures and the positions of the second fixing structure 34 and the block plate 35 are described in the following paragraphs, so further detail is omitted here for brevity. Please refer to FIG. 4 and FIG. 10, each slidable locking member 30 may slide along the first side frames 21 to switch between a locked position and an unlocked position. Please refer to FIG. 4, 5,6, 7, 8, and 9, when each slidable locking member 30 is at the locked position, each positioning insertion piece 331 is inserted and fixed in each slot 231, each side limiting member 232 blocks an outside of each insertion ends 33, each insertion ends 33 is respectively abutted against each corresponding limiting portion 23, each block plate 35 blocks a lower portion of each flange 14 to retain the downward movement of the flange 14 along the vertical direction D (shown in FIG. 9), each second fixing structure 34 is locked with each first fixing structure 15. Please refer FIGs. 10, 11, 12, and 13, when each slidable locking member 30 slides to the unlocked position, each insertion ends 33 is separated from each side limiting member 232, each block plate 35 is separated from each flange 14, each second fixing structure 34 is separated from each first fixing structure 15, thus the upper lid 20 and the slidable locking members 30 may separate from the body 10 (as shown in FIG. 13). As such, the upper lid 20 and the slidable locking members 30 may lock or unlock on the body 10 by sliding the slidable locking members 30 to switch between (move between) the locked position and the unlocked position. Namely, the upper lid 20 and the slidable locking members 30 may quickly and easily lock and unlock on the body 10, and the crisper box of the present disclosure can avoid the slidable locking members 30 from shaking in any direction—left, right, front, back, or up and down—relative to the upper lid 20 or the body 10 when the slidable locking members 30 are locked. It is worth noting that each positioning insertion piece 331 in the embodiment is still inserted in but not fixed in each slot 231 when the slidable locking members 30 are at the unlocked position, but the scope of the present disclosure is not limited to this embodiment. For example, each positioning insertion piece 331 may also be totally separated from each slot 231 when the slidable locking members 30 are at the unlocked position, this total separation between the positioning insertion piece 331 and the slot 231 does not affect the unlocking of the upper lid 20 and the slidable locking members 30 relative to the body 10. Details are provided as follows. Please refer FIG. 2,3,4,9, 10, and 12, in each slidable locking member 30, the block plate 35 is extended from an inner wall of the connecting strip 32 and is misaligned (staggered) with the flange 14 in the vertical direction D. In detail, the block plate 35 in each slidable locking member 30 is parallel to the flange 14 and lower than the flange 14. Therefore, the block plate 35 may block a lower portion of the flange 14 to prevent the upper lid 20 and the slidable locking members 30 from separating from the body 10 along the vertical direction D when the slidable locking members 30 are at the locked position. In the embodiment, the number of the block plate 35 in each slidable locking member 30 is two, and the block plates 35 in each slidable locking member 30 are arranged at intervals on an inner wall of the connecting strip 32, but the scope of the present disclosure is not limited to this embodiment. For example, the number of the block plate 35 in each slidable locking member 30 also may be one or more than three, as long as the block plate 35 may effectively achieve a blocking effect to the flange 14. Please refer FIG. 2 and FIG. 6, the specific structures and the positions of each first fixing structure 15 and each second fixing structure 34 are described as follows. In the embodiment, the number of the second fixing structure 34 in each slidable locking member 30 is two, and the second fixing structures 34 in each slidable locking member 30 are arranged on an inner wall of each side strip 31, but the scope of the present disclosure is not limited to this embodiment. Each first fixing structure 15 is for example a clamping strip. Two ends of each clamping strip are extended toward the two opposite slidable locking members 30 and the two ends respectively has a first clamping slope 151. Each second fixing structure 34 is for example a wedge block. A side of the wedge block facing to the clamping strip of each wedge block has a second clamping slope 341. As such, each first clamping slope 151 and each second clamping slope 341 are relatively complementary and arranged in parallel. Each second clamping slope 341 is buckled with each first clamping slope 151 to fix each slidable locking member 30 on the body 10 when each slidable locking member 30 is at the locked position. Each second clamping slope 341 is separated from each first clamping slope 151 to release the locking between each slidable locking member 30 and the body 10 when each slidable locking member 30 is at the unlocked position. With reference also to FIG. 6, since the wedge blocks of the second fixing structures 34 in the embodiment are lower than the clamping strips of the first fixing structures 15, the first clamping slopes 151 in the embodiment are separately located under the clamping strips of the first fixing structure 15, and the second clamping slopes 341 in the embodiment are separately located on the wedge blocks of the second fixing structures 34. As such, the first clamping slopes 151 and the second clamping slopes 341 may guide each other when the slidable locking members 30 slide toward the limiting portions 23 (i.e., slide from the unlocked position to the locked position), thus the wedge blocks of the second fixing structure 34 may slide smoothly until they are fixed below the clamping strips of the first fixing structures 15. Please refer FIGs. 2, 3, and 5, each first side frame 21 has a pair of positioning convex-strips 211. Each side strip 31 has a pair of positioning notches 311 arranged at intervals. In detail, the positioning convex-strips 211 in each first side frame 21 are arranged corresponding to the limiting portions 23, the positioning convex-strips 211 are extended along vertical direction on the first side frames 21 and the positioning notches 311 are extended along vertical direction on the side strips 31. Each positioning convex-strip 211 is selectively stuck inside one of the positioning notches 311 of the corresponded side strip 31. As such, each positioning convex-strip 211 is stuck inside the positioning notch 311 adjacent to the corresponded insertion end 33 when the slidable locking members are at the locked position. Each positioning convex-strip 211 is stuck inside the positioning notch 311 away from the corresponded insertion end 33 when the slidable locking members are at the unlocked position. That is, the slidable locking members 30 may achieve a positioning effect either it is at the locked position or at the unlocked position, thus a user may know whether the slidable locking members 30 are at the locked position or at the unlocked position through a feedback tactile sensation of the positioning convex-strips 211 being stuck into one of the positioning notches 311 when operating. Details are provided as follows. Please refer FIGs. 1, 2, 7, 8, and 11, the upper lid has a pair of indentations 24. Each indentation 24 is arranged beside each second side frame 22, and one side of the indentation 24 facing to the corresponded second side frame 22 of each indentation 24 has a stopping surface 241. Atop of each connecting strip 21 has a barb 321. Each barb 321 is buckled with each stopping surface 241 of the corresponded indentations 24 when the slidable locking members 30 are at the unlocked position, thus each slidable locking member 30 is longitudinally restricted to prevent detaching from the upper lid 20. Please refer FIGs. 2, 3, and 8, the slidable locking type airtight container of the present disclosure further includes a sealing ring 40. In the embodiment, the sealing ring 40 is a silicone ring or a rubber ring, but the present disclosure is not limit to this. The upper lid 20 has a groove 25 that is generally rectangular. The sealing ring 40 is fixed in the groove 25 and elastically abutting between the upper lid 20 and the surrounding wall 12 to achieve a sealing effect between the upper lid 20 and the body 10. In the embodiment, the groove 25 is extended upward from a bottom surface of the upper lid 20, thus the sealing ring 40 is elastically abutted on a top end of the surrounding wall 12, but the scope of the present disclosure is not limit to this embodiment. For example, the groove 25 may also be extended inward from an outside surface of the upper lid 20 to make the sealing ring 40 to elastically abut on an inside surface of the surrounding wall 12, or the groove 25 may also be extended outward from an inside surface of the upper lid 20 to make the sealing ring 40 to elastically abut on an outside surface of the surrounding wall 12. It is worth noting that each second clamping slope 341 is respectively buckled with each corresponded first clamping slope 151 to propel the body 10 upward along the vertical direction D when the slidable locking members 30 are at the locked position, thus the sealing ring 40 is elastically abutted between the upper lid 20 and the surrounding wall 12 to effectively ensure a good sealing effect. It shall be understood that the present disclosure may have other types of embodiments, and a person with ordinary skills in the art of the technical field of the present disclosure may make various changes and modifications corresponding to the present disclosure without deviating the principle and substance of the present disclosure; however, such corresponding changes and modification shall be considered to be within the claimed scope of the present disclosure.

Claims

1. A slidable locking type airtight container, comprising:a body, comprising a bottom plate, a surrounding wall around the bottom plate, an opening defined by the surrounding wall, a flange extended from the opening of the surrounding wall and extended toward an outside of the body, and two first fixing structures respectively arranged on opposite sides of the flange;an upper lid, configured to hermetically cover the opening along a vertical direction, the upper lid comprising a pair of opposite first side frames and a pair of opposite second side frames, each of the first side frames comprising a pair of limiting portions, each of the limiting portions comprising a slot and a side limiting member; anda pair of slidable locking members, arranged opposite to each other in correspondence with the second side frames, each of the slidable locking members configured to slide along the first side frames to switch between a locked position and an unlocked position, each of the slidable locking members comprising a pair of insertion ends, a second fixing structure, and an block plate, each of the insertion ends comprising a positioning insertion piece;wherein when each of the slidable locking members is at the locked position, each of the positioning insertion pieces is inserted and fixed in each of the slots, each of the side limiting members is configured to block an outside of each of the insertion ends, each of the block plates is configured to block each of the flanges along the vertical direction, each of the second fixing structures is locked with each of the first fixing structures;wherein when each of the slidable locking members is at the unlocked position, each of the insertion ends is separated from each of the side limiting members, each of the block plates is separated from each of the flanges, each of the second fixing structures is separated from each of the first fixing structures.

2. The slidable locking type airtight container according to claim 1, wherein each of theslidable locking members comprises a pair of side strips and a connecting strip, the connecting strip is arranged corresponding to one of the second side frames, each of the side strips is connected to one of two ends of the connecting strip and covers a part of each first side frame, each of the insertion ends is arranged on an end of each of the side strips away from the connecting strip.

3. The slidable locking type airtight container according to claim 2, wherein in each of the slidable locking members, the block plate is extended from an inner wall of the connecting strip and is misaligned with the flange in the vertical direction.

4. The slidable locking type airtight container according to claim 2, wherein in each of the slidable locking members, a number of the second fixing structure is two, each of the second fixing structures is arranged on an inner wall of each of the side strips.

5. The slidable locking type airtight container according to claim 2, wherein each of the first fixing structures is a clamping strip, each of the second fixing structures is a wedge block, two ends of each of the clamping strips respectively comprises a first clamping slope, each of the wedge blocks comprises a second clamping slope, each of the second clamping slopes is buckled with each of the first clamping slopes to fix each of the slidable locking members on the body when each of the slidable locking members is at the locked position, each of the second clamping slopes is separated from each of the first clamping slopes when each of the slidable locking members is at the unlocked position.

6. The slidable locking type airtight container according to claim 2, wherein each of the first side frames comprises a pair of positioning convex-strips, each of the positioning convex-strips is arranged corresponding to each of the limiting portions, each of the side strips comprises a pair of positioning notches arranged at intervals, each of the positioning convex-strips is selectively stuck inside one of the positioning notches of the corresponded side strip.

7. The slidable locking type airtight container according to claim 2, wherein the upper lid comprises a pair of indentations, each of the indentations is arranged beside each of the second sideframes, each of the indentations comprises a stopping surface, each of the connecting strips comprises a barb, each of the barbs is buckled with corresponding one of the stopping surfaces when each of the slidable locking members is at the unlocked position.

8. The slidable locking type airtight container according to claim 2, wherein each of the5 positioning insertion pieces is extended from the corresponded insertion end along the first side frames.

9. The slidable locking type airtight container according to claim 1, wherein each of the insertion ends is abutted against corresponding one of the limiting portions when each of the slidable locking members is at the locked position.10 10. The slidable locking type airtight container according to claim 1, further comprising asealing ring, wherein the upper lid comprises a groove, the sealing ring is fixed in the groove and elastically abutted between the upper lid and the surrounding wall.PCT / CN2023 / 100357A. CLASSIFICATION OF SUBJECT MATTERB65D45 / 32(2006.01)i; B65D45 / 16(2006.01)iAccording to International Patent Classification (IPC) or to both national classification and IPCB. FIELDS SEARCHEDMinimum documentation searched (classification system followed by classification symbols) IPC:B65DDocumentation searched other than minimum documentation to the extent that such documents are included in the fields searchedElectronic data base consulted during the international search (name of data base and, where practicable, search terms used) CNTXT, ENTXTC, WPABSC, CJFD, W, DUXIU: W, §11, W, tfi, it®, O, W, fO, ¥,DWPI, ENTXT, WPABS: bowl, container, brim, C-shape, edge, perimeter, U-shape, close, move, circumference, glide, lock, unlock, release, seal, slip, slide, open.DOCUMENTS CONSIDERED TO BE RELEVANTCategory* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No. Y US 2007095837 Al (ROTHO KUNSTSTOFF AG) 03 May 2007 (2007-05-03) description, paragraphs 23-53, and figures 1-8 1-10 Y CN 211483271 U (MERIDIAN INTERNATIONAL CO., LTD.) 15 September 2020 (2020-09-15) description, paragraphs 29-41, and figures 1-11 1-10 A CN 101342962 A (SANKO CO., LTD.) 14 January 2009 (2009-01-14) entire document 1-10 A US 6253947 Bl (YANG HENGTE) 03 July 2001 (2001-07-03) entire document 1-10 A JP H0519148 U (ARON KASEIKK) 09 March 1993 (1993-03-09) entire document 1-10| | Further documents are listed in the continuation of Box C.annex.* Special categories of cited documents: “T” later document published after the international filing date or priority “A” document defining the general state of the art which is not considered date and not in conflict with the application but cited to understand the to be of particular relevance principle or theory underlying the invention “D” document cited by the applicant in die international application “X” document of particular relevance; the claimed invention cannot be “E" earlier application orpatent but published on or after the international considered novel or cannot be considered to involve an inventive step filing date when the document is taken alone •SL” document which may throw doubts on priority claim(s) or which is “Y” document of particular relevance; the claimed invention cannot be cited to establish the publication date of another citation or other considered to involve an inventive step when the document is special reason (as specified) combined with one or more other such documents, such combination “O” document referring to an oral disclosure, use, exhibition or other being obvious to a person skilled in the art means document member of the same patent family “P” document published prior to the international filing date but later than the priority date claimed Date of the actual completion of the international search 23 August 2023 Date of mailing of the international search report 12 September 2023 Name and mailing address of the ISA / CN China National Intellectual Property Administration (ISA / CN) China No. 6, Xitucheng Road, Jimenqiao, Haidian District, Beijing 100088 Authorized officer Telephone No.INTERNATIONAL SEARCH REPORT Information on patent family membersInternational application No.PCT / CN2023 / 100357Patent document cited in search report Publication date (day / month / year) Patent family member)s) Publication date (day / month / year) US 2007095837 Al 03 May 2007 AT 412586 T 15 November 2008 DE 502006001932 DI 11 December 2008 DE 202005017057 UI 29 December 2005 EP 1780140 Al 02 May 2007 EP 1780140 Bl 29 October 2008 ON 211483271 U 15 September 2020 US 2021155373 Al 27 May 2021 EP 3828097 Al 02 June 2021 US 11192689 B2 07 December 2021 AU 2020202609 B2 06 January 2022 CN 101342962 A 14 January 2009 CN 101342962 B 09 November 2011 US 6253947 Bl 03 July 2001 None JP H0519148 U 09 March 1993 JPH 0754116 Y2 13 December 1995

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