CN112493657A - Schoolbag with protection function - Google Patents

Schoolbag with protection function Download PDF

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Publication number
CN112493657A
CN112493657A CN202011598211.1A CN202011598211A CN112493657A CN 112493657 A CN112493657 A CN 112493657A CN 202011598211 A CN202011598211 A CN 202011598211A CN 112493657 A CN112493657 A CN 112493657A
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CN
China
Prior art keywords
book
block
pushing
groove
schoolbag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011598211.1A
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Chinese (zh)
Other versions
CN112493657B (en
Inventor
唐智川
李光耀
刘明
赵静雯
于海洋
王才芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jining Yingbo Er Luggage Products Co ltd
Original Assignee
Zhejiang Maijilishang Intelligent Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Maijilishang Intelligent Technology Co ltd filed Critical Zhejiang Maijilishang Intelligent Technology Co ltd
Priority to CN202011598211.1A priority Critical patent/CN112493657B/en
Publication of CN112493657A publication Critical patent/CN112493657A/en
Application granted granted Critical
Publication of CN112493657B publication Critical patent/CN112493657B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45FTRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/04Sacks or packs carried on the body by means of two straps passing over the two shoulders
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00Details; Accessories
    • A45C13/001Accessories
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00Details; Accessories
    • A45C13/02Interior fittings; Means, e.g. inserts, for holding and packing articles

Abstract

The invention discloses a schoolbag with a protection function, which comprises a book cover shell, braces arranged on the book cover shell, a book hiding cavity arranged on the book cover shell, an inlet arranged on the book cover shell, an opening arranged on the book cover shell, a turnover cover capable of being arranged on the book cover shell, a plurality of support plates arranged on the book hiding cavity, a driving part used for enabling the support plates to displace, centering parts respectively symmetrically arranged on the support plates, limiting parts respectively arranged on the support plates, and an unlocking part arranged on the turnover cover. According to the invention, the opening and the entrance are arranged on the schoolbag, so that a book can only move in one direction when being put into the schoolbag, the phenomenon that pages are bent and folded is prevented, the integrity of the book is protected, the book can be prevented from moving downwards along the entrance, the name of the book can be seen from the opening, the content of the book can be rapidly identified, and the taking is convenient.

Description

Schoolbag with protection function
Technical Field
The invention belongs to the technical field of stationery protection, and particularly relates to a schoolbag with a protection function.
Background
When a student writes in a book bag, pages can be bent if the student carelessly reads the book, the book is folded, the service life of the reduced book is prolonged, the book placed in the book bag generally has a plurality of books, and when one of the books needs to be taken, the book can be confirmed by the front cover of the book, so that the book is inconvenient to take.
Disclosure of Invention
The invention provides a schoolbag with a protection function, which can prevent books from being folded and can be taken quickly, in order to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a schoolbag with a protection function comprises a book cover shell, braces arranged on the book cover shell, a book hiding cavity arranged on the book cover shell, an inlet arranged on the book cover shell, an opening arranged on the book cover shell, a turnover cover capable of being arranged on the book cover shell, a plurality of support plates arranged on the book hiding cavity, first chamfers respectively arranged on the support plates, second chamfers respectively arranged on the support plates, concave surfaces respectively arranged on the support plates, planes respectively arranged on the support plates, a driving part used for enabling the support plates to displace, centering parts respectively symmetrically arranged on the support plates, limiting parts respectively arranged on the support plates, and an unlocking part arranged on the turnover cover; the plurality of supporting plates are sequentially arranged from high to low; the drive part comprises a first sliding groove symmetrically arranged on the book collection cavity, a plurality of sliding blocks arranged on the first sliding groove, a drive spring used for connecting the sliding blocks, a first fixing rod respectively penetrating the support plate, a first fixing rod and a drive torsion spring, wherein the two ends of the first fixing rod are connected with the sliding blocks, and the drive torsion spring is used for enabling the support plate to reset.
The turning cover is opened, the book back is placed transversely in the schoolbag, the schoolbag firstly enters from the inlet and follows the first chamfer angle, and as the inclination of the first chamfer angle is greater than that of the second chamfer angle, the book back is only required to be pushed downwards, the book back slides into the middle of the two support plates from the first chamfer angle, under the general condition, the schoolbag shell inclines towards the direction of the back belt when the schoolbag is placed, so that the book back slides along the plane of the support plates and enters into the middle of the two support plates, a region capable of storing books is formed between the plane of the previous support plate and the concave surface of the next support plate, but the width of the region is less than the thickness of the books, so that the two support plates can extrude the books under the action of the driving spring when the schoolbag is plugged in, the book is prevented from being turned over, on the one hand, the book is placed downwards from the book back and can be straightened along with the downward movement, so that no folding angle exists and no fold exists on the page; when filling books inwards, because books have thickness, can push up the backup pad through first chamfer and slightly rotate to fill in the centre of two backup pads, when books entered into in the middle of two backup pads, through driving spring, can adapt to the books of different thickness, let books remain a state of being pressed from both sides all the time. And the back of the body of books is placed down, when strutting two backup pads, just can see the books name in the back of the body of the book from the export orientation to realize accurate taking out required book, on the one hand because the opening is in the below, so only need remove spacingly, just can let books slide down through the dead weight, the convenience of taking, it also can be very convenient to hang the schoolbag on the wall moreover, the books of taking, practical promptly, can save space again.
The centering component comprises a first empty groove arranged on the plane, a centering plate arranged on the first empty groove in a sliding manner, a guide hole arranged on the first empty groove, a pull rope, a centering spring, a guide arc and a feeding assembly, wherein the two ends of the pull rope are respectively connected with the centering plate and the pull rope on the supporting plate, the centering spring is used for enabling the centering plate to reset, the guide arc is arranged on the centering plate, and the feeding assembly is arranged on the centering plate.
When a book is placed between the two supporting plates, on one hand, the book can be directly moved to and away from the plug through the first chamfer, the book cannot be bent because the book is always kept attached, on the other hand, the supporting plates can be opened and placed, when the supporting plates are opened, the opening on the supporting plates can be enlarged because only the driving torsion spring is driven to rotate, the opening is convenient to place, the opening below the supporting plates is kept unchanged because the driving spring is limited, and then the book can be plugged into the middle of the supporting plates and cannot slide out, when the supporting plates are opened, the centering plates can be opened towards two sides through the pull ropes, the area between the supporting plates is increased, the phenomenon of corner folding caused by hard plugging can not occur, the book can be placed into the middle of the supporting plates along the guide circular arcs, then when the supporting plates are closed, the centering springs can reset the centering plates, and thrust is generated on two sides of the, the middle of backup pad is pushed to books, can not let the schoolbag put in disorder and dog-ear like this on the one hand, and on the other hand can satisfy the books of equidimension not for the state of being pressed from both sides all the time prevents to turn and appears the fold, and orderly placing later takes just very conveniently, increases the practicality.
The limiting component comprises a second empty groove arranged on the concave surface, a first push block arranged on the second empty groove in a vertically movable manner, a first push part arranged on the first push block, a second push part arranged on the first push block, a limiting spring used for resetting the first push block, a second slide groove arranged on the supporting plate, a third push part arranged on the concave surface, and supporting components symmetrically arranged on the second slide groove, wherein the supporting components comprise a limiting block arranged on the second groove in a sliding manner, a supporting block arranged on the limiting block, and a supporting spring used for resetting the limiting block; the limiting block can be pushed by the second pushing part.
When the book back enters the bottom ends of the two supporting plates, the book back can push against the first pushing block, on one hand, the first pushing part can enter the second hollow groove, on the other hand, the second pushing part can push against the two limiting blocks to be drawn towards the middle, so that the supporting blocks can also be drawn towards two sides, the book is supported, although the book has a certain tightening effect under the effect of the centering plate and the supporting plates, if the book is carried on the back and moved, the book can shake up and down, the clamping force on the book is insufficient, so that the book is prevented from directly falling out of the opening through the supporting blocks, and the stability is improved; when the book back pushes the first pushing block to move downwards, the book back leans against the third pushing part, the third pushing part is enabled to initially support the book back, and stability is improved.
The feeding assembly comprises a second fixed rod arranged on the centering plate, a rotating block arranged on the second fixed rod, an arc block arranged on the rotating block, a feeding plate rotatably arranged on the arc block, a groove arranged on the feeding plate and used for increasing friction, and a pushing assembly arranged on the supporting block; the rotating block can rotate around the second fixing rod; the pushing assembly comprises a first through groove arranged on the supporting block, a second pushing block arranged on the first through groove in a sliding manner, a first pushing spring used for resetting the second pushing block, a second through groove arranged on the centering plate, a third pushing block arranged on the second through groove in a sliding manner, and a second pushing spring used for resetting the third pushing block; the second pushing block can push the third pushing block; the third push block can enter the second through groove.
When a book needs to be taken out, the name of the book on the back of the book is read first, the book to be taken is determined, if the schoolbag is hung on a wall at the moment, the limiting block only needs to be moved, the limiting block is moved towards two sides, in this way, the supporting block cannot support the book, and then the book can directly slide down through gravity, so that the book is convenient to take; if the schoolbag is placed on a desk, only the schoolbag needs to be pushed, then the second push block is pressed, one end of the second push block is led out from the first through groove, then the limit block is slid, on one hand, the limit between the support block and the schoolbag is relieved, on the other hand, the second push block can push the third push block, the third push block is led into the second through groove, then the rotating block can rotate due to the fact that the limit of the third push block is not limited, at the moment, the limit block moves to one side, the second push block can push the rotating block to rotate, at the moment, the feeding plate on one end of the rotating block can be led out, the two sides of the book are clamped, the book can be clamped by the feeding plate along with the rotation of the rotating block, the book can be led out from the opening, in short, only the second push block needs to be pressed, then the limit block is slid, the back of the book can be led out from the opening, and then the needed book can be taken out as soon as the back of the book, the operation is convenient and fast; wherein because on the rotatable arc piece again of feed plate, so when changeing the piece pivoted, books can be pressed from both sides all the time to the notched one side of feed plate, increased frictional force to increase the centre gripping effect, let the piece of changeing when the pivoted, the feed block just can be held books and come out, thereby improves the speed of taking.
The unlocking part comprises a limiting rod which is rotatably arranged on the book cover shell and a limiting groove which is arranged on the flip cover and is matched with the limiting rod; inside the schoolbag was put to book if needs, just rotated the gag lever post, let the position and the spacing groove phase-match of gag lever post, just so can turn flip, when books were put, repeated just moving lets flip unblock, can let flip protect the entry, prevents to carry on one's back the schoolbag when walking, and books come out from the entry, have improved the protection dynamics to books.
In summary, the invention has the following advantages: through setting up opening and entry to the schoolbag, only can toward a direction removal when letting the book put into the schoolbag, prevent that the page from appearing phenomenon of buckling and fold phenomenon, protected the integrality of books, the book is down preventing along with the entry in addition, can let the title obtain from the opening, can discern the content of book fast, the convenience of taking.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a cross-sectional perspective view of fig. 2 taken along a-a.
Fig. 4 is a partial structural view of the support plate of the present invention.
Fig. 5 is a partial structural schematic view of the feeding assembly of the present invention.
Fig. 6 is a partial structural schematic view of a limiting member of the present invention.
Fig. 7 is an enlarged view of a portion a in fig. 3.
Fig. 8 is an enlarged view at B in fig. 4.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
As shown in fig. 1 to 8, a schoolbag with a protection function comprises a schoolbag shell 1, a back strap 11, a book collection cavity 12, an inlet 13, an opening 14, a flip cover 15, a plurality of support plates 16, a first chamfer 17, a second chamfer 171, a concave surface 18, a plane 181, a driving part 2, a centering part 3, a limiting part 4 and an unlocking part 8; the braces 11 are arranged on the book cover shell 1, the book storage cavity 12 is arranged on the book cover shell 1, the inlet 13 is arranged on the book cover shell 1, the opening 14 is arranged on the book cover shell 1, the flip cover 15 can be arranged on the book cover shell 1, the support plates 16 are arranged on the book storage cavity 12, the first chamfers 17 are respectively arranged on the support plates 16, the second chamfers 171 are respectively arranged on the support plates 16, the concave surfaces 18 are respectively arranged on the support plates 16, the planes 181 are respectively arranged on the support plates 16, the driving part 2 is used for enabling the support plates 16 to displace, the centering parts 3 are respectively symmetrically arranged on the support plates 16, the limiting parts 4 are respectively arranged on the support plates 16, and the unlocking part 8 is arranged on the flip cover 15; the plurality of support plates 16 are arranged in order from the top to the bottom.
As shown in fig. 3 and 4, the driving part 2 includes a first sliding chute 21, a plurality of sliding blocks 22, a driving spring 23, a first fixing rod 24, and a driving torsion spring 25; first spout 21 symmetry is located on the book collection chamber 12, a plurality of sliders 22 are located on the first spout 21, driving spring 23 is used for connecting a plurality of sliders 22, and first dead lever 24 wears to locate respectively in the backup pad 16 and both ends with slider 22 links to each other, and drive torsional spring 25 is used for letting backup pad 16 resets.
As shown in fig. 3 and 4, the centering component 3 includes a first hollow groove 31, a centering plate 32, a guide hole 33, a pull rope 34, a centering spring 35, a guide arc 36, and the feeding assembly 6; the first hollow groove 31 is arranged on the plane 181, the centering plate 32 is slidably arranged on the first hollow groove 31, the guide hole 33 is arranged on the first hollow groove 31, two ends of the pull rope 34 are respectively arranged on the centering plate 32 and the support plate 16, the centering spring 35 is used for resetting the centering plate 32, the guide circular arc 36 is arranged on the centering plate 32, and the feeding assembly 6 is arranged on the centering plate 32.
As shown in fig. 3, 4, 6 and 7, the limiting component 4 includes a second empty slot 41, a first pushing block 42, a first pushing part 43, a second pushing part 44, a limiting spring 45, a second sliding slot 46, a third pushing part 47 and a supporting component 5; the second empty groove 41 is formed in the concave surface 18, the first pushing block 42 is arranged on the second empty groove 41 in a vertically movable mode, the first pushing portion 43 is arranged on the first pushing block 42, the second pushing portion 44 is arranged on the first pushing block 42, the limiting spring 45 is used for enabling the first pushing block 42 to reset, the second sliding groove 46 is formed in the supporting plate 16, the third pushing portion 47 is arranged on the concave surface 18, and the supporting component 5 is symmetrically arranged on the second sliding groove 46.
As shown in fig. 8, the supporting component 5 includes a limiting block 51, a supporting block 52, and a supporting spring 53; the limiting block 51 is slidably arranged on the second groove 65, the supporting block 52 is arranged on the limiting block 51, and the supporting spring 53 is used for resetting the limiting block 51; the stopper 51 may be pushed by the second pushing part 44.
As shown in fig. 5 and 8, the feeding assembly 6 includes a second fixing rod 61, a rotating block 62, an arc block 63, a feeding plate 64, a groove 65, and a pushing assembly 7; the second fixing rod 61 is arranged on the centering plate 32, the rotating block 62 is arranged on the second fixing rod 61, the arc block 63 is arranged on the rotating block 62, the feeding plate 64 is rotatably arranged on the arc block 63, the groove 65 is arranged on the feeding plate 64 and is used for increasing friction, and the pushing assembly 7 is arranged on the supporting block 52; the rotating block 62 can rotate around the second fixing rod 61.
As shown in fig. 8, the pushing assembly 7 includes a first through slot 71, a second pushing block 72, a first pushing spring 73, a second through slot 74, a third pushing block 75, and a second pushing spring 76; the first through groove 71 is arranged on the supporting block 52, the second pushing block 72 is slidably arranged on the first through groove 71, the first pushing spring 73 is used for resetting the second pushing block 72, the second through groove 74 is arranged on the centering plate 32, the third pushing block 75 is slidably arranged on the second through groove 74, and the second pushing spring 76 is used for resetting the third pushing block 75; the second pushing block 72 can push the third pushing block 75; the third pushing block 75 can enter the second through groove 74.
As shown in fig. 1, the unlocking member 8 includes a limiting rod 81 and a limiting groove 82; the limiting rod 81 is rotatably arranged on the book cover shell 1, and the limiting groove 82 is arranged on the flip cover 15 and is matched with the limiting rod 81.
The specific working process is as follows:
when the schoolbag turning cover 15 is opened, a book is laid across, a book back firstly passes through the inlet 13, the middle of the two supporting plates 16 is placed, when the supporting plates 16 are opened, the pull rope 34 pulls the centering plate 32 to open towards two sides, the book moves downwards along the concave surface 18 through the first chamfer 17, the plane 181 allows the book to have a storage space, the book back moves downwards, the concave surface 18 and the plane 181 are attached to prevent page turning under the action of the driving torsion spring 25, the book back pushes the first pushing part 43 to enable the first pushing block 42 to move downwards, so that the second pushing block 72 pushes the limiting block 51 to approach towards the middle, and the book is prevented from sliding out of the opening 14 through the supporting block 52; when the schoolbag needs to be taken, a book needing to be taken is directly confirmed through the opening 14, then the limiting block 51 moves towards two sides, if the schoolbag is erected, the book can be directly taken out without the limitation of the supporting plate 16, if the schoolbag is laid down, when the limiting block 51 moves towards two sides, the second pushing block 72 is pressed, the second pushing block 72 pushes the third pushing block 75 to enter the second through groove 74, then the second pushing block 72 pushes the rotating block 62 to rotate, the book can be clamped by the feeding plate 64, and the book can be taken out from the outlet along with the rotation of the feeding plate 64.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. The schoolbag with the protection function comprises a book cover shell (1), braces (11) arranged on the book cover shell (1), a book hiding cavity (12) arranged on the book cover shell (1), an inlet (13) arranged on the book cover shell (1), an opening (14) arranged on the book cover shell (1), a flip cover (15) arranged on the book cover shell (1), a plurality of support plates (16) arranged on the book hiding cavity (12), first chamfers (17) respectively arranged on the support plates (16), second chamfers (171) respectively arranged on the support plates (16), concave surfaces (18) respectively arranged on the support plates (16), planes (181) respectively arranged on the support plates (16), a driving part (2) used for enabling the support plates (16) to displace, and centering parts (3) respectively symmetrically arranged on the support plates (16), The limiting components (4) on the plurality of supporting plates (16) and the unlocking component (8) on the turnover cover (15) are respectively arranged; the plurality of support plates (16) are sequentially arranged from high to low; the method is characterized in that: drive part (2) are located including the symmetry first spout (21) on book collection chamber (12), locate a plurality of sliders (22) on first spout (21), be used for connecting drive spring (23) of a plurality of sliders (22), wear to locate respectively on backup pad (16) and both ends with first dead lever (24) that slider (22) link to each other, be used for letting drive torsional spring (25) that backup pad (16) reset.
2. The schoolbag with protection function as claimed in claim 1, wherein: the centering component (3) comprises a first empty groove (31) arranged on the plane (181), a centering plate (32) slidably arranged on the first empty groove (31), a guide hole (33) arranged on the first empty groove (31), a pull rope (34) with two ends respectively connected with the centering plate (32) and the support plate (16), a centering spring (35) used for resetting the centering plate (32), a guide arc (36) arranged on the centering plate (32), and a feeding assembly (6) arranged on the centering plate (32).
3. The schoolbag with protection function as claimed in claim 2, wherein: the limiting component (4) comprises a second empty groove (41) arranged on the concave surface (18), a first pushing block (42) arranged on the second empty groove (41) in a vertically movable mode, a first pushing part (43) arranged on the first pushing block (42), a second pushing part (44) arranged on the first pushing block (42), a limiting spring (45) used for enabling the first pushing block (42) to reset, a second sliding groove (46) arranged on the supporting plate (16), a third pushing part (47) arranged on the concave surface (18) and a supporting component (5) symmetrically arranged on the second sliding groove (46).
4. The schoolbag with protection function as claimed in claim 3, wherein: the supporting component (5) comprises a limiting block (51) which is slidably arranged on the second groove (65), a supporting block (52) which is arranged on the limiting block (51), and a supporting spring (53) which is used for resetting the limiting block (51); the limiting block (51) can be pushed by the second pushing part (44).
5. The schoolbag with protection function as claimed in claim 4, wherein: the feeding assembly (6) comprises a second fixing rod (61) arranged on the centering plate (32), a rotating block (62) arranged on the second fixing rod (61), an arc block (63) arranged on the rotating block (62), a feeding plate (64) rotatably arranged on the arc block (63), a groove (65) arranged on the feeding plate (64) and used for increasing friction, and a pushing assembly (7) arranged on the supporting block (52); the rotating block (62) can rotate around the second fixing rod (61).
6. The schoolbag with protection function as claimed in claim 5, wherein: the pushing assembly (7) comprises a first through groove (71) arranged on the supporting block (52), a second pushing block (72) slidably arranged on the first through groove (71), a first pushing spring (73) used for resetting the second pushing block (72), a second through groove (74) arranged on the centering plate (32), a third pushing block (75) slidably arranged on the second through groove (74), and a second pushing spring (76) used for resetting the third pushing block (75); the second pushing block (72) can push the third pushing block (75); the third push block (75) can enter the second through groove (74).
7. The schoolbag with protection function as claimed in claim 1, wherein: the unlocking component (8) comprises a limiting rod (81) which is rotatably arranged on the book cover shell (1) and a limiting groove (82) which is arranged on the flip cover (15) and is matched with the limiting rod (81).
CN202011598211.1A 2020-12-29 2020-12-29 Schoolbag with protection function Active CN112493657B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011598211.1A CN112493657B (en) 2020-12-29 2020-12-29 Schoolbag with protection function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011598211.1A CN112493657B (en) 2020-12-29 2020-12-29 Schoolbag with protection function

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CN112493657A true CN112493657A (en) 2021-03-16
CN112493657B CN112493657B (en) 2022-07-08

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210203777U (en) * 2019-07-03 2020-03-31 冯奕霖 Movable layered schoolbag capable of preventing book wrinkles
CN211747649U (en) * 2020-03-17 2020-10-27 四川职业技术学院 Multi-functional knapsack suitable for outdoor exercises

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210203777U (en) * 2019-07-03 2020-03-31 冯奕霖 Movable layered schoolbag capable of preventing book wrinkles
CN211747649U (en) * 2020-03-17 2020-10-27 四川职业技术学院 Multi-functional knapsack suitable for outdoor exercises

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Effective date of registration: 20230620

Address after: 273519 Microenterprise Park, Guoli Town, Zoucheng City, Jining, Shandong Province

Patentee after: Jining Yingbo Er Luggage Products Co.,Ltd.

Address before: 313300 north side of Jiuhong Road, Kangshan Park, Anji Economic Development Zone, Dipu street, Anji County, Huzhou City, Zhejiang Province (in Anji Shuangyang sponge products Co., Ltd.)

Patentee before: Zhejiang maijilishang Intelligent Technology Co.,Ltd.

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