EP3338588B1 - A trolley case - Google Patents

A trolley case Download PDF

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Publication number
EP3338588B1
EP3338588B1 EP17173299.3A EP17173299A EP3338588B1 EP 3338588 B1 EP3338588 B1 EP 3338588B1 EP 17173299 A EP17173299 A EP 17173299A EP 3338588 B1 EP3338588 B1 EP 3338588B1
Authority
EP
European Patent Office
Prior art keywords
lower cover
buffer
upper cover
reinforcing strip
reinforcing
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.)
Active
Application number
EP17173299.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3338588A1 (en
Inventor
Muliang HU
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.)
Itp Heyuan Luggage Co Ltd Shenzhen Branch
Original Assignee
Itp (heyuan) Luggage 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 Itp (heyuan) Luggage Co Ltd filed Critical Itp (heyuan) Luggage Co Ltd
Priority to PL17173299T priority Critical patent/PL3338588T3/pl
Publication of EP3338588A1 publication Critical patent/EP3338588A1/en
Application granted granted Critical
Publication of EP3338588B1 publication Critical patent/EP3338588B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/02—Materials therefor
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/04—Frames
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/36—Reinforcements for edges, corners, or other parts
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/03—Suitcases
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/03—Suitcases
    • A45C2005/037—Suitcases with a hard shell, i.e. rigid shell as volume creating element

Definitions

  • the present invention relates to a field of a suitcase, and more particularly relates to a trolley case.
  • CN203575803U discloses a trolley case.
  • the present invention provides a trolley case comprising an upper cover and a lower cover which is openable and connectable to the upper cover, characterized in that an inner side of the upper cover is provided continuously or intermittently with an upper reinforcing strip, an inner part of the upper reinforcing strip is a first hollow structure, the upper reinforcing strip is defined at an inner periphery of a side of the upper cover adjacent to the lower cover; an inner side of the lower cover is provided continuously or intermittently with a lower reinforcing strip, an inner part of the lower reinforcing strip is a second hollow structure, the lower reinforcing strip is defined at an inner periphery of a side of the lower cover adjacent to the upper cover, the upper reinforcing strip and the lower reinforcing strip form a support region for preventing deformation of the upper cover and the lower cover and co-supporting the trolley case when the upper cover and the lower cover are closed.
  • the upper reinforcing strip comprises a first outer surface and a first inner surface, a first gap is defined between the first outer surface and the first inner surface, the first hollow structure is formed in the first gap, the lower reinforcing strip comprises a second outer surface and a second inner surface, a second gap is defined between the second outer surface and the second inner surface, and the second hollow structure is formed in the second gap.
  • a cross section of the first hollow structure and the second hollow structure is in a honeycomb shape, a stepped shape, a lattice shape, or a wavy shape.
  • an edge of the upper cover adjacent to the lower cover protrudes outwardly to form a first buffer step
  • the first buffer step comprises a first buffer surface and a first reinforcing surface, one end of the first buffer surface is defined at the edge of the upper cover close to the lower cover, the other end of the first buffer surface extends in a direction opposite to the lower cover and is connected to the first reinforcing surface, the first reinforcing surface forms a first angle with the first buffer surface, the upper reinforcing strip is defined on the first reinforcing surface;
  • an edge of the lower cover adjacent to the upper cover protrudes outwardly to form a second buffer step
  • the second buffer step comprises a second buffer surface and a second reinforcing surface, one end of the second buffer surface is defined at the edge of the lower cover close to the upper cover, the other end of the second buffer surface extends in a direction opposite to the upper cover and is connected to the second reinforcing surface, the second reinforcing surface forms a second angle with
  • the upper reinforcing strip is integrally molded with the upper cover
  • the lower reinforcing strip is integrally molded with the lower cover
  • the first hollow structure and the second hollow structure comprise a plurality of straight lines and oblique lines, when the first hollow structure and the second hollow structure have a cross-sectional shape in a stepped shape, the straight lines are composed of first straight line segments and second straight line segments, the first straight line segments are straight line segments extending from the first outer surface toward the first inner surface or straight line segments extending from the second outer surface toward the second inner surface; the second straight line segments are straight line segments extending from the first inner surface toward the first outer surface or straight line segments extending from the second inner surface toward the second outer surface, a ratio between a length of each of the straight line segments and a straight distance of the first outer surface to the first inner surface or the second outer surface to the second inner surface is 1: 8; one oblique line is connected between one end of one first straight line segment and one end of one second straight line segment, an angle between adjacent oblique lines is a fourth angle, wherein the fourth angle is in a range of 60 ° to 90°.
  • the first hollow structure and the second hollow structure comprise a plurality of triangles when a cross-sectional shapes of the first hollow structure and the second hollow structures are in the wavy shape, a vertical line segment perpendicular to the first outer surface or the second outer surface is provided at an vertex of one triangle, each of the triangles is an isosceles triangle, an angle of the vertex of the isosceles triangle is in a range of 60° to 120.
  • the trolley case provided by the present invention is provided with the upper reinforcing strip and the lower reinforcing strip on the periphery of the upper cover and the lower cover close to the opening to prevent the trolley case from being deformed, strength of the reinforcing strips is enhanced through a pattern set of a cross-section of the upper reinforcing strip and the lower reinforcing strip, the structure is simple, and the reinforcing strips is made of the plastic materials, so that an overall weight of the trolley case to reduce, and the reinforcing strips can be integrally molded with the upper cover and the lower cover, the production process is simple, and it does not affect the appearance of the trolley case.
  • an inner part of the upper reinforcing strip 110 is a first hollow structure, the upper reinforcing strip 110 is defined at an inner periphery of a side of the upper cover 100 adjacent to the lower cover 200 and is defined by extending toward a side portion of the inner periphery of the upper cover 100; an inner side of the lower cover 200 is provided continuously or intermittently with a lower reinforcing strip 210, an inner part of the lower reinforcing strip 210 is a second hollow structure, the lower reinforcing strip 210 is defined at an inner periphery of a side of the lower cover 200 adjacent to the upper cover 100 and is defined by extending toward a side portion of the inner periphery of the upper cover 200.
  • the first buffer step 120 comprises a first buffer surface 121 and a first reinforcement surface 122, one end of the first buffer surface 121 is defined at the edge of the upper cover 100 close to the lower cover 200, the other end of the first buffer surface 121 extends in a direction opposite to the lower cover 200 and is connected to the first reinforcing surface 122, the first reinforcing surface 122 forms a first angle A with the first buffer surface 121, the first angle A is an angle larger than or equal to 90°,
  • the first buffer surface 121 can buffer the pressure and prevent the upper cover from being deformed.
  • the second buffer step 220 comprises a second buffer surface 221 and a second reinforcement surface 222, one end of the second buffer surface 221 is defined at the edge of the lower cover 200 close to the upper cover 100, the other end of the second buffer surface 221 extends in a direction opposite to the upper cover 100 and is connected to the second reinforcing surface 222, the second reinforcing surface 222 forms a second angle (not shown) with the second buffer surface 221, a configuration of the second angle is similar to that of the first angle, and the second angle is an angle larger than or equal to 90°.
  • the first buffer surface 121 is abutted against the second buffer surface 221 to form a support region S for preventing deformation of the upper cover 100 and the lower cover 200 and co-supporting the trolley case.
  • an inner side of the upper cover 100 is provided continuously or intermittently with the upper reinforcing strip 110 for preventing deformation of the upper cover 100
  • the upper reinforcing strip 110 is defined at an inner periphery of a side of the upper cover 100 adjacent to the lower cover 200, namely is defined on an inner sidewall of the first reinforcing surface 122 and is defined by extending toward in a direction toward the lower cover 200 from the upper cover 100.
  • the first angle is 90°
  • the first buffer surface 121 is parallel to a upper cover side surface 101.
  • a maximum height of the first buffer surface 121 may be substantially equal to a height of the upper cover side surface 101, that is, the first buffer surface 121 may extend to a position in a maximum extent to be substantially flushing with an upper cover surface S1.
  • the first buffer surface 121 may buffer the pressure to prevent deformation of the trolley case.
  • Horizontal concave sections 140 which are parallel to each other, are also provided horizontally on the upper cover surface S1 to serve the effect of assisting baggage in the trolley case.
  • a reinforcing strip (not shown) having a hollow structure on the inside of the upper cover surface S1, illustrated structures of the hollow structure is shown in any one of Figs. 6 to 11 or various combinations, the reinforcing strip is configured for enhancing compression strength of the upper cover surface S1, and further protect the trolley case from external impact and deformation.
  • the trolley case can bear and remove a certain external force through the reinforcing strips in the trolley case body, thereby increasing the case crash performance, so as to protect the trolley case body from damage by external forces.
  • the inner side of the lower cover surface S2 may also be provided with a reinforcing strip (not shown) for enhancing the compressive strength of the lower cover surface S2.
  • the lower cover 200 is similar to the upper cover 100, an inner side of the lower cover 200 is provided continuously or intermittently with the lower reinforcing strip 210 for preventing deformation of the lower cover 200, the lower reinforcing strip 210 is defined at an inner periphery of a side of the lower cover 200 adjacent to the upper cover 100, namely is defined on an inner sidewall of the second reinforcing surface 222 and is defined by extending toward in a direction toward the upper cover 100 from the lower cover 200.
  • the second angle is 90°
  • the second buffer surface 221 is parallel to a lower cover side surface 201.
  • the lower cover 200 is further provided with a support block 250 for supporting on the ground when place the trolley case on the ground to load and unload luggage in the trolley case, preventing the lower cover 200 from deforming by gravity of the luggage when the luggage is overweight or during repeated normal use of the trolley box.
  • the support block 250 is provided in a middle portion of the lower cover 200, since under gravity of the trolley case, the lower cover surface S2 will have a slightly outwardly convex arc, so that the middle portion of the lower cover 200 is closest to the ground, then it is possible for the support block 250 to be provided here so as to use the minimum amount of materials to avoid a phenomenon that the lower cover 200 is deformed by the luggage and the like.
  • the lower reinforcing strip 210 for preventing the deformation of the trolley case is continuously or intermittently fixed to the second reinforcing surface 222 close to an inner wall of the trolley case to enhance the strength of the second reinforcing surface 222.
  • a width of the lower reinforcing strip 210 and a width of the second reinforcing surface 222 are the same, a height of the lower reinforcing strip 210 and a height of the second buffer surface 221 are equal.
  • the lower reinforcing strip 210 and the second reinforcing surface 222 are integrally molded from the mold and are positioned on the inner wall of the second reinforcing surface 222 so as not to affect the appearance of the case cover; understandably, the width and fixing means of the lower reinforcing strip 210 are not limited thereto, and the lower reinforcing strip 210 may be fixed to the inner wall of the second reinforcing surface 222 in such a manner of adhesion, buckle connection, and so on.
  • the lower reinforcing strip 210 surround the second reinforcing surface 222 at least one turn, i.e., the second reinforcing surface 222 comprises at least one lower reinforcing strip 210.
  • the lower reinforcing strip 110 for preventing the deformation of the trolley case is continuously or intermittently fixed to the first reinforcing surface 122 close to an inner wall of the trolley case to enhance the strength of the second reinforcing surface 222.
  • a width of the upper reinforcing strip 110 and a width of the first reinforcing surface 122 are the same, a height of the upper reinforcing strip 110 and a height of the first buffer surface 121 are equal.
  • the upper reinforcing strip 110 and the first reinforcing surface 122 are integrally molded from the mold and are positioned on the inner wall of the first reinforcing surface 122 so as not to affect the appearance of the case cover; understandably, the width and fixing means of the upper reinforcing strip 110 are not limited thereto, and the upper reinforcing strip 110 may be fixed to the inner wall of the first reinforcing surface 122 in such a manner of adhesion, buckle connection, and so on.
  • the upper reinforcing strip 110 surrounds the first reinforcing surface 122 at least one turn, i.e., the first reinforcing surface 122 comprises at least one upper reinforcing strip 110.
  • the lower reinforcing strip 210 comprises a second outer surface a2 and a second inner surface b2, a second gap c2 is defined between the second outer surface a2 and the second inner surface b2, and the second hollow structure is formed in the second gap c2.
  • the second hollow structure is in a stepped shape (shown as Fig. 6 ), a honeycomb shape (shown as Fig. 7 ), a lattice shape, or a wavy shape (shown as Fig. 8 ).
  • the hollow structure of the present invention of the reinforcing strip can be set at different locations according to the trolley case load-bearing areas, different load-bearing areas can be set up with a different hollow structure to enhance the strength of the trolley case.
  • the stepped shape comprises a plurality of straight lines 301 and oblique lines 302, the straight lines 301 alternatingly comprise first straight line segments 301a and second straight line segments 301b, the first straight line segments 301a are straight line segments extending from the first outer surface a1 toward the first inner surface b1 or straight line segments extending the second outer surface a2 toward the second inner surface b2; the second straight line segments 301b are straight line segments extending from the first inner surface b1 toward the first outer surface a1 or straight line segments extending the second inner surface b2 toward the second outer surface a2, a ratio between a length of the straight line 301 and a width of the first reinforcing surface 120 is a first ratio; one oblique line 302 is connected between one end of one first straight line segment 301a and one end of one second straight line segment 301b, an angle between adjacent oblique lines is a fourth angle B, preferably, the first ratio is 1:8, and the fourth angle is in a range of 60
  • a ratio of the number of honeycomb cells of the honeycomb shape to a length of the first reinforcing surface 122 or the second reinforcing surface 222 is 1-1.5 /cm.
  • a larger number of cellular cells can cause a large dense of cells, then a structure of the one-piece molding mold requires a high precision, thereby increasing a cost of processing, a smaller number of the cells will result in less force bearing, then the reinforcement effect of the trolley case is not obvious.
  • the wavy shape comprises a plurality of triangles, preferably, a vertical line segment perpendicular to the first outer surface a1 or the second outer surface a2 is provided at vertexes of the triangles, due to the simultaneous presence of straight segments and oblique lines, external forces can be transmitted into the reinforcing strip, and the force is exerted by strength of the reinforcing strip.
  • the triangle is an isosceles triangle
  • angles of the vertexes of the isosceles triangle are in a range of 60° to 120, a smaller angle leads to a larger dense of the triangles, then a structure of the one-piece molding mold requires a high precision, thereby increasing a cost of processing, a larger angle will result in less force transmitting caused by a smaller dense of the triangles, then the reinforcement effect of the trolley case is not obvious.
  • each straight strip is perpendicular to the first outer surface a1 or the second outer surface a2, it is to be understood that the straight strips may also be parallel to the first outer surface a1 or the second outer surface a2, or may be formed in a grid shape by vertical strips parallel to the first outer surface a1 or the second outer surface a2, respectively.
  • angles of acute angles between the oblique strips and the first outer surface a1 or the second outer surface a2 range from 10° to 60°, so that the oblique strips are able to withstand and scatter force, and not be damaged by the external forces.
  • straight line segments may be added at crests, as shown in Fig. 6 , for enhancing the strength of the hollow structure.
  • a part of the second reinforcing surface 222 is recessed along the lower cover side surface 201 to form a second inner groove 202, namely, the second gap c2 is recessed along the lower cover side surface 201 to form a second inner groove 202
  • the lower reinforcing strip 210 is defined in the second inner groove 202, preferably, a height of the lower reinforcing strip 210 is equaled to a recessed height Hb of the second inner groove 202.
  • the recessed height Hb of the second inner groove 202 is smaller than or equal to a height H2 of the second buffer surface 221, the second buffer surface 222 has a third angle C with respect to a horizontal direction X, a thickness D of the second buffer surface 221 is larger than a thickness d of the lower cover side surface 201.
  • the second buffer surface 221 is firstly subjected to an external force when the trolley case suffers the external force, thus the thickness D of the second buffer surface 221 is larger than the thickness d of the lower cover side surface 201 to enhance the strength of the second buffer surface 221, so as to protect the lower cover side surface 201 from deformation or collapse, thereby protecting the luggage inside the trolley case.
  • a maximum height of the second buffer surface 221 may be substantially equal to a height of the lower cover side surface 201, that is, the second buffer surface 221 may extend to a position in a maximum extent to be substantially flushing with the lower cover surface S2 (referring to Fig. 4 and descriptions of Fig. 4 ).
  • the second inner groove 202 can follow the second buffer surface 221 to extend to a position in a maximum extent to be substantially flushing with the lower cover surface S2, namely, the recessed height Hb of the second inner groove 202 is equaled to the height of the lower cover side surface 101 as well, so that the entire lower cover side surface 201 is reinforced.
  • the height H2 of the second buffer surface 221 is 24 mm
  • the thickness Hb of the second inner groove 202 is 7 mm
  • the thickness D of the second reinforcing surface 222 is 2.5 mm
  • the thickness d of the lower cover side surface 201 is 1.3 mm
  • the third angle C is 3 °.
  • the second buffer surface 221 has a slight inclination downwardly directed to the lower reinforcing strip 210 through the third angle C, the external forces in different directions can be transmitted to the lower reinforcing strip 210 for unloading the external forces, thereby enhancing the strength of the lower cover 200.
  • the lower reinforcing strip 210 is circumscribed by the side walls of the lower cover 200, and the lower reinforcing strip 210 can be protected by the side walls of the lower cover 200 to further protect the lower cover 200 from collapsing or deforming under the external forces.
  • the upper cover 100 may also be provided with the above-described structure.
  • the other technical features of the present embodiment are the same as those of the foregoing embodiment, and will not be described again.
  • the trolley case provided by the present invention is provided with reinforcing strips close to the edges of the upper cover 100 and the lower cover 200 to prevent the deformation, and the upper reinforcing strip 110 and the lower reinforcing strip 210 are formed by injection molding.
  • the production process is relatively simple, the reinforcing strips do not affect the overall appearance of the trolley case, and their materials are the same as that of the trolley case. Thus it is relatively light, compared to the steel ring and external support in the prior art, it does not increase the weight of the trolley case.
  • the reinforcing strips may also be added to the upper cover 100 and the lower cover 200 of the trolley case to enhance the strength of the overall strength of the trolley case.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Handcart (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
EP17173299.3A 2016-12-23 2017-05-29 A trolley case Active EP3338588B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17173299T PL3338588T3 (pl) 2016-12-23 2017-05-29 Walizka na kółkach

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621426719.2U CN206482178U (zh) 2016-12-23 2016-12-23 一种拉杆箱

Publications (2)

Publication Number Publication Date
EP3338588A1 EP3338588A1 (en) 2018-06-27
EP3338588B1 true EP3338588B1 (en) 2019-10-09

Family

ID=58779030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17173299.3A Active EP3338588B1 (en) 2016-12-23 2017-05-29 A trolley case

Country Status (4)

Country Link
EP (1) EP3338588B1 (pl)
CN (1) CN206482178U (pl)
ES (1) ES2758534T3 (pl)
PL (1) PL3338588T3 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4062792A4 (en) * 2020-12-01 2023-04-26 Chuzhou Yujian Travel Product Co., Ltd. ROLLER SUITCASE
EP4627964A1 (en) * 2024-04-03 2025-10-08 Samsonite IP Holdings S.à r.l. Integral inner rim for injection moulded hard-sided luggage cases

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108903193B (zh) * 2018-08-06 2024-02-09 上海宝塑阿罗伊高分子材料有限公司 一种四边开合的箱包
CN111166028A (zh) * 2020-02-28 2020-05-19 江门市保丽科技有限公司 行李箱内壁结构及行李箱
CN115336849A (zh) * 2021-05-13 2022-11-15 滁州市预见旅游用品有限公司 一种箱体强化结构及一种拉杆箱
CN112293896A (zh) * 2020-12-01 2021-02-02 滁州市预见旅游用品有限公司 拉杆箱

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB354600A (en) * 1930-09-24 1931-08-13 Hans Hofbauer Improvements in or relating to trunks
DE202012012047U1 (de) * 2012-12-13 2013-01-30 Wei-Hung Lai Schutzstreifen für Koffer
CN203575803U (zh) * 2013-11-18 2014-05-07 胡木良 一种拉杆箱
US20160166024A1 (en) * 2014-12-15 2016-06-16 Wei-Hung Lai Luggage case structure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4062792A4 (en) * 2020-12-01 2023-04-26 Chuzhou Yujian Travel Product Co., Ltd. ROLLER SUITCASE
EP4627964A1 (en) * 2024-04-03 2025-10-08 Samsonite IP Holdings S.à r.l. Integral inner rim for injection moulded hard-sided luggage cases

Also Published As

Publication number Publication date
CN206482178U (zh) 2017-09-12
PL3338588T3 (pl) 2020-03-31
ES2758534T3 (es) 2020-05-05
EP3338588A1 (en) 2018-06-27

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