Front-opening luggage compartment structure

Abstract

The front-opening luggage case structure of the utility model comprises a case shell, a support frame, an outer cover and a zipper. The case shell has a first annular flange and an opening formed by the first annular flange, the first annular flange has a connected embedding section and a coupling section, the support frame has a first abutting wall fixed to the coupling section, an annular convex rib and an embedding groove mutually embedded with the embedding section. The outer cover is arranged outside the case shell and corresponds to the opening, and the outer cover has a second annular flange. The zipper has two meshing chain pieces, and the two chain pieces are respectively arranged on the annular convex rib of the support frame and the second annular flange of the outer cover. When pressed against the outer cover, the second annular flange of the outer cover abuts against the annular convex rib of the support frame. In this way, the front-opening luggage case structure of the utility model can prevent the outer cover from sinking into the opening of the case shell, and is convenient for installing and replacing the zipper.

Description

Technical Field

[0001] The utility model relates to a front-opening luggage case, in particular to a front-opening luggage case structure, which can prevent an outer cover from sinking into an opening of a case shell and is convenient for installing and replacing a zipper. Background Art

[0002] The existing front-opening suitcase has a case shell and an outer cover, wherein the case shell has a first shell and a second shell that are connected to each other, the first shell has a first annular flange and an opening surrounded by the first annular flange, and the outer cover is arranged on the outside of the case shell and corresponds to the opening of the first shell, and the outer cover has a second annular flange.

[0003] When manufacturing a conventional front-opening suitcase, a thermoplastic plastic is molded to form an integral first shell and an outer cover, and a cutting knife is used to cut the junction of the first shell and the outer cover, so that the first shell and the outer cover are separated from each other and the first shell forms the aforementioned opening. Since the cutting knife cuts off part of the material of the outer periphery of the outer cover, the size of the outer cover is always smaller than the size of the opening of the first shell. Therefore, after the outer cover and the case are assembled, when the outer cover is pressed by an external force, the outer cover is easily sunk into the opening of the first shell.

[0004] Moreover, the existing front-opening suitcase also has a zipper for combining the case shell and the outer cover. One side of the zipper is sewn and fixed to the first annular flange of the first case shell, and the other side of the zipper is sewn and fixed to the second annular flange of the outer cover. The two sides of the zipper must be completely aligned to combine the case shell and the outer cover. However, due to the large volume of the first case shell, it is quite inconvenient to sew the zipper, and it is not easy to disassemble and replace the zipper when it is damaged. Therefore, how to provide a front-opening suitcase that can prevent the outer cover from sinking into the opening of the case shell and facilitate the installation and replacement of the zipper is a problem that the industry needs to overcome urgently. Utility Model Content

[0005] In view of the above-mentioned deficiencies, the main purpose of the present invention is to provide a front-opening suitcase, which can prevent the outer cover from sinking into the opening of the case shell and facilitate the installation and replacement of the zipper.

[0006] In order to achieve the above main purpose, the front-opening luggage case structure provided by the utility model includes a case shell, a support frame, an outer cover and a zipper. The case shell has a first side wall, a first annular flange extending inwardly from the first side wall, and an opening surrounded by the first annular flange, the first annular flange has an embedded segment and a connecting segment connecting the embedded segment, and the opening connects the inside and outside of the case shell. The support frame has a first abutting wall, an annular rib protruding from the first abutting wall, and an embedded groove, the embedded groove and the embedded segment of the first annular flange are mutually embedded, and the first abutting wall is detachably fixed to the connecting segment of the first annular flange. The outer cover is arranged on the outside of the case shell and corresponds to the opening, and the outer cover has a second annular flange. The zipper has a first chain piece and a second chain piece meshed with each other. The first chain piece is fixed to the annular rib of the support frame, and the second chain piece is fixed to the second annular flange of the outer cover.

[0007] By virtue of the above technical features, when the outer cover provided by the front-opening luggage case structure of the utility model is pressed by an external force, the second annular flange of the outer cover abuts against the annular rib of the support member, so that the outer cover is not easily sunk into the opening of the case shell. In addition, the first chain piece of the zipper provided by the front-opening luggage case structure of the utility model is fixed to the support frame, so that the first chain piece and the support frame can be installed to the case shell together, or the first chain piece and the support frame can be removed from the case shell together and replaced with a new first chain piece. Such a special structural design makes the zipper easy to install and replace.

[0008] Preferably, the support frame further has a second abutting wall opposite to the first abutting wall, the first and second abutting walls form the engaging groove, and the engaging section of the first annular flange abuts against the first and second abutting walls. In this way, the first and second abutting walls of the support frame help the engaging section of the first annular flange to be tightly engaged in the engaging groove of the support frame.

[0009] Preferably, the engaging section of the first annular flange has a horizontal section extending horizontally in a direction away from the opening, a first segment vertically connected to the horizontal section, and a second segment arc-shapedly connected to the first segment; the first segment abuts against the first abutting wall of the support frame, and the second segment abuts against the second abutting wall of the support frame. In this way, the engaging section of the first annular flange can be tightly engaged in the engaging groove of the support frame.

[0010] Preferably, the support frame further has a connecting wall connecting the first and second abutting walls; the engaging segment of the first annular flange further has a third segment connecting the second segment, and the third segment abuts against the first abutting wall and the connecting wall of the support frame. In this way, the engaging segment of the first annular flange can be tightly engaged in the engaging groove of the support frame.

[0011] Preferably, the engaging section of the first annular flange has a horizontal section extending horizontally in a direction away from the opening, a straight section connecting the horizontal section, and a convex structure extending from the straight section in a direction away from the opening, the convex structure abuts against the first abutting wall of the support frame, and the straight section abuts against the second abutting wall of the support frame. In this way, the engaging section of the first annular flange can be tightly engaged in the engaging groove of the support frame.

[0012] Preferably, the convex structure of the embedded card section is a convex point, a convex rib or a convex block. In this way, the convex structure can be manufactured in different styles according to the requirements of the manufacturer.

[0013] Preferably, the first annular flange also has a plurality of first holes passing through it; the first abutting wall of the support frame also has a plurality of second holes passing through it; the front-opening luggage case structure further includes a plurality of fixing members, each of which is inserted through and fixed to each of the first and second holes. In this way, the first abutting wall of the support frame can be tightly fixed to the joint section of the first annular flange.

[0014] Preferably, the coupling section of the first annular flange further has a plurality of recessed positioning grooves, each of which is connected to one of the first holes; the first abutting wall of the support frame further has a plurality of protruding positioning blocks, each of which is penetrated by one of the second holes, and each of which is accommodated in one of the positioning grooves. In this way, the first abutting wall of the support frame is positioned at the coupling section of the first annular flange.

[0015] Preferably, the first chain piece has a first chain tooth portion and a first fixing portion, the first chain tooth portion is fixed to the first fixing portion, and the first fixing portion is fixed to the annular convex rib of the support frame; the second chain piece has a second chain tooth portion and a second fixing portion, the second chain tooth portion is fixed to the second fixing portion and meshed with the first chain tooth portion, and the second fixing portion is fixed to the second annular flange of the outer cover. In this way, when the first and second chain pieces are damaged, the damaged first and second chain pieces can be removed from the annular convex rib and the second annular flange respectively and replaced with new first and second chain pieces.

[0016] Preferably, the front-opening luggage case structure of the utility model further comprises a first rubber sleeve and a second rubber sleeve, wherein the first rubber sleeve is sleeved on the annular rib of the support frame, and the first fixing portion of the first chain piece is indirectly fixed to the annular rib of the support frame through the first rubber sleeve; the second rubber sleeve is sleeved on the second annular flange of the outer cover, and the second fixing portion of the second chain piece is indirectly fixed to the second annular flange of the outer cover through the second rubber sleeve. In this way, when the first and second chain pieces are damaged, the damaged first and second chain pieces can be removed from the first and second rubber sleeves respectively and replaced with new first and second chain pieces.

[0017] The detailed structure, features, assembly or use of the front-opening luggage case structure provided by the present invention will be described in the detailed description of the implementation method below. However, those with ordinary knowledge in the art should understand that the detailed description and the specific embodiments listed for implementing the present invention are only used to illustrate the present invention and are not used to limit the patent scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a further description of the front-opening luggage case structure provided by the present invention with reference to an embodiment and accompanying drawings, wherein:

[0019] Figure 1 A three-dimensional assembly diagram of a front-opening luggage case structure according to a first embodiment of the present utility model;

[0020] Figure 2 It is a three-dimensional exploded view of the front-opening luggage case structure of the first embodiment of the utility model;

[0021] Figure 3 A front view of a first shell provided by the front-opening luggage case structure of the first embodiment of the utility model;

[0022] Figure 4 It is a front view of the front-opening luggage case structure of the first embodiment of the utility model;

[0023] Figure 5 for Figure 4 Section view along section line AA;

[0024] Figure 6 for Figure 4 Section view along section line AA;

[0025] Figure 7 A three-dimensional diagram of a support frame provided by the front-opening luggage case structure of the first embodiment of the utility model;

[0026] Figure 8 A three-dimensional view of the support frame provided by the front-opening luggage case structure of the first embodiment of the utility model from another perspective;

[0027] Fig. 9 is a schematic diagram showing that the outer cover is pressed by an external force in a horizontal direction;

[0028] Fig.10 is a schematic diagram showing that the outer cover is pressed by an external force in an inclined direction;

[0029] Fig.11 A cross-sectional view of a front-opening luggage case structure according to a second embodiment of the present invention; and

[0030] Fig.12It is a cross-sectional view of a front-opening luggage case structure according to a third embodiment of the present invention.

[0031] Wherein, the reference numerals are:

[0032] 1: Front-opening luggage compartment structure

[0033] 2: Front-opening luggage compartment structure

[0034] 3: Front-opening luggage compartment structure

[0035] 10: Box shell

[0036] 11: First shell

[0037] 11': First shell

[0038] 11”: First shell

[0039] 12: First ring wall

[0040] 13: First side wall

[0041] 14: First annular flange

[0042] 14': first annular flange

[0043] 15: Embedded card section

[0044] 15': Embedded section

[0045] 16: Horizontal segment

[0046] 16': Horizontal section

[0047] 16A: Straight section

[0048] 16B: convex structure

[0049] 17: First segment

[0050] 18: Second segment

[0051] 19: The third segment

[0052] 20: Combined segment

[0053] 21: Positioning slot

[0054] 22: First hole

[0055] 23: Opening

[0056] 24: Second shell

[0057] 25: Second ring wall

[0058] 26: Second side wall

[0059] 27: Accommodation space

[0060] 28: Pull rod

[0061] 29: Casters

[0062] 30: Support frame

[0063] 31: First abutment wall

[0064] 32: Positioning block

[0065] 33: Second hole

[0066] 34: Second abutment wall

[0067] 35: Connecting wall

[0068] 36: Card slot

[0069] 37: Annular rib

[0070] 40: First rubber sleeve

[0071] 50: Outer cover

[0072] 51: Cover

[0073] 52: Second annular flange

[0074] 60: Second rubber sleeve

[0075] 70: Zipper

[0076] 71: First chain

[0077] 72: first sprocket portion

[0078] 73: First fixing part

[0079] 74: Second chain

[0080] 75: Second sprocket part

[0081] 76: Second fixing part

[0082] 77: Zipper puller

[0083] S:Fixture DETAILED DESCRIPTION

[0084] First of all, it should be noted that the technical features provided by the present invention are not limited to the specific structures, uses and applications described in the embodiments. The terms used in the description are all illustrative descriptive terms that can be understood by those with ordinary knowledge in the relevant technical field. The directional descriptive terms such as "front, top, bottom, back, left, right, top, bottom, inside, and outside" mentioned in this specification are only illustrative descriptive terms based on the normal use direction, and are not intended to limit the scope of the claims.

[0085] See also Figure 1 and Figure 2 The front-opening luggage case structure 1 of the first embodiment of the present invention includes a case shell 10 , a support frame 30 , an outer cover 50 and a zipper 70 .

[0086] Please continue reading Figures 2 to 4 The box shell 10 includes a first shell 11, the first shell 11 has a first annular wall 12, a first side wall 13 connected to the first annular wall 12, a first annular flange 14 extending inwardly from the first side wall 13, and an opening 23 formed by the first annular flange 14. The first annular flange 14 of the first shell 11 has an embedded segment 15 and a connecting segment 20 connected to the embedded segment 15, as shown in FIG. Figure 3 , Figure 5 and Figure 6 As shown, the engaging segment 15 is located at the top side edge, the left side edge and the right side edge of the first annular flange 14, and the engaging segment 15 has a horizontal segment 16 extending horizontally in a direction away from the opening 23, a first segment 17 vertically connected to the horizontal segment 16, a second segment 18 arc-shaped connected to the first segment 17, and a third segment 19 connected to the second segment 18. The coupling segment 20 is located at the bottom side edge of the first annular flange 14, and the coupling segment 20 has a plurality of inwardly recessed positioning grooves 21 (three in this embodiment, but not limited to three in fact), and each positioning groove 21 is arranged at intervals and communicates with a first hole 22.

[0087] like Figure 2 As shown, the box shell 10 further includes a second shell 24, the second shell 24 and the first shell 11 are connected to each other, and the second shell 24 has a second ring wall 25 opposite to the first ring wall 12, and a second side wall 26 surrounding and connected to the second ring wall 25, wherein the first ring wall 12, the first side wall 13, the second ring wall 25 and the second side wall 26 together form a accommodating space 27 for accommodating luggage, and the opening 23 of the first shell 11 communicates the accommodating space 27 inside the box shell 10 with the outside of the box shell 10. In addition, the second shell 24 is also provided with a retractable pull rod 28, and the bottom of the box shell 10 is also provided with four casters 29, and the four casters 29 support the box shell 10 together.

[0088] like Figure 5 , Figure 7 and Figure 8As shown, the support frame 30 has a first abutting wall 31 in an annular shape, a second abutting wall 34 arranged parallel to and spaced from the first abutting wall 31, a connecting wall 35 connecting the first and second abutting walls 31 and 34, and an insertion groove 36 formed by the first and second abutting walls 31, 34 and the connecting wall 35. The bottom side edge of the inner side of the first abutting wall 31 also has a plurality of positioning blocks 32 (three in this embodiment, but not limited to three in fact) recessed outward, each positioning block 32 is arranged at intervals and penetrated by a second hole 33. The support frame 30 also has an annular rib 37 protruding outward from the outer side of the first abutting wall 31, and the annular rib 37 is sleeved with a first rubber sleeve 40.

[0089] When assembling, Figure 5 As shown, on the one hand, the support frame 30 is engaged with the engaging segment 15 of the first annular flange 14 of the first shell 11 through the engaging groove 36, so that the first segment 17 of the engaging segment 15 abuts against the first abutment wall 31 of the support frame 30, and the second segment 18 of the engaging segment 15 abuts against the second abutment wall 34 of the support frame 30, and the third segment 19 of the engaging segment 15 abuts against the first abutment wall 31 and the connecting wall 35 of the support frame 30, thereby, the engaging segment 15 of the first annular flange 14 is tightly engaged in the engaging groove 36 of the support frame 30. On the other hand, the support frame 30 abuts against the connecting section 20 of the first annular flange 14 with the first abutting wall 31. At this time, each positioning block 32 of the first abutting wall 31 is accommodated in a positioning groove 21 of the connecting section 20, so that the first abutting wall 31 of the support frame 30 is positioned at the connecting section 20 of the first annular flange 14, and a plurality of fixing members S (such as screws) are respectively penetrated and fixed in each of the first and second holes 22 and 33, so that the first abutting wall 31 of the support frame 30 is tightly fixed to the connecting section 20 of the first annular flange 14. However, the fixing method between the first abutting wall 31 and the connecting section 20 is not limited to this embodiment, for example, it can also be achieved by bonding, nailing or other suitable methods, but this embodiment adopts the method of fixing the fixing member S to penetrate and fix the first abutting wall 31 and the connecting section 20, so that the first abutting wall 31 and the connecting section 20 can be tightly combined with each other, and the first abutting wall 31 can be easily removed from the connecting section 20.

[0090] like Figure 2 and Figure 5 As shown, the outer cover 50 has a cover plate 51 and a second annular flange 52 surrounding and connected to the cover plate 51, and the second annular flange 52 is sleeved with a second rubber sleeve 60. The outer cover 50 is disposed outside the box shell 10 and corresponds to the opening 23 of the first shell 11.

[0091] like Figure 2 , Figure 5 and Figure 6As shown, the zipper 70 includes a first chain piece 71, a second chain piece 74 and two zipper heads 77. The first chain piece 71 has a first sprocket portion 72 and a first fixing portion 73. The first sprocket portion 72 is fixed to the first fixing portion 73. The first fixing portion 73 is fixed to the annular convex rib 37 of the support frame 30 together with the first rubber sleeve 40 by sewing, that is, the first fixing portion 73 is indirectly fixed to the annular convex rib 37 of the support frame 30 through the first rubber sleeve 40. The second chain piece 74 has a second sprocket portion 75 and a second fixing portion 76. The second sprocket portion 75 is fixed to the second fixing portion 76 and meshes with or separates from the first sprocket portion 72 through the two zipper heads 77. The second fixing portion 76 is fixed to the second annular flange 52 of the outer cover 50 together with the second rubber sleeve 60 by sewing, that is, the second fixing portion 76 is indirectly fixed to the second annular flange 52 of the outer cover 50 through the second rubber sleeve 60.

[0092] Please continue reading Figure 5 and Figure 6 When the zipper 70 is damaged and needs to be replaced with a new one, it is necessary to use a tool (such as a screwdriver) to remove all the fixing parts S, so that the first abutment wall 31 of the support frame 30 is separated from the coupling section 20 of the first annular flange 14 of the first shell 11, and the embedding groove 36 of the support frame 30 is separated from the embedding section 15 of the first annular flange 14, so that the support frame 30 is removed from the first annular flange 14 of the first shell 11, and then the first chain piece 71 of the damaged zipper 70 is removed from the first rubber sleeve 40 and replaced with a new first chain piece 71, and the second chain piece 74 of the damaged zipper 70 is removed from the second rubber sleeve 60 and replaced with a new second chain piece 74, and finally the support frame 30 is reinstalled and fixed to the first annular flange 14 of the first shell 11.

[0093] However, in the present embodiment, the annular rib 37 of the support frame 30 may not be covered with the first rubber sleeve 40, so that the first fixing portion 73 of the first chain piece 71 is directly fixed to the annular rib 37 of the support frame 30, and the second annular flange 52 of the outer cover 50 may not be covered with the second rubber sleeve 60, so that the second fixing portion 76 of the second chain piece 74 is directly fixed to the second annular flange 52 of the outer cover 50. When the zipper 70 is damaged and needs to be replaced with a new zipper 70, it is only necessary to remove the support frame 30 from the first annular flange 14 of the first shell 11 according to the above-mentioned disassembly method, then remove the first chain piece 71 of the damaged zipper 70 from the annular rib 37 of the support frame 30 and replace it with a new first chain piece 71, remove the second chain piece 74 of the damaged zipper 70 from the second annular flange 52 of the outer cover 50 and replace it with a new second chain piece 74, and finally reinstall and fix the support frame 30 to the first annular flange 14 of the first shell 11.

[0094] As can be seen from the above, the first and second chain pieces 71 , 74 of the zipper 70 can be directly or indirectly mounted on the outer cover 50 and the support frame 30 , and can also be easily removed and replaced with a new zipper 70 .

[0095] The above are the structural features of the front-opening luggage case structure 1 of the present invention. The following will further introduce the usage and function of the front-opening luggage case structure 1 of the present invention.

[0096] In actual use, if Figure 4 and Figure 5 As shown, the user needs to pull the two zipper heads 77 to make the first sprocket portion 72 and the second sprocket portion 75 mesh with each other, so that the outer cover 50 and the first shell 11 of the box shell 10 are in a close fit. Fig. 9 As shown, the outer cover 50 will be displaced toward the opening 23 of the first shell 11. At this time, the second annular flange 52 of the outer cover 50 together with the second rubber sleeve 60 abuts against the annular convex rib 37 of the support frame 30 on which the first rubber sleeve 40 is sleeved, so that the outer cover 50 is not easily sunk into the opening 23 of the first shell 11. Similarly, if the cover plate 51 of the outer cover 50 is pressed by an external force along an inclined direction, the outer cover 50 will also be displaced toward the opening 23 of the first shell 11. At this time, the annular flange 52 of the outer cover 50 together with the second rubber sleeve 60 will still abut against the annular convex rib 37 of the support frame 30 on which the first rubber sleeve 40 is sleeved, so that the outer cover 50 is not easily sunk into the opening 23 of the first shell 11.

[0097] However, the front-opening luggage case structure 1 is not limited to that disclosed in this embodiment. Fig.11 As shown, the front-opening luggage case structure 2 of the second embodiment of the present invention is substantially the same in structure as the first embodiment, the main difference being that the first annular flange 14 of the first shell 11' provided in this embodiment has an embedding section 15 having a horizontal section 16, a first segment 17 and a second segment 18, while the third segment 19 is omitted.

[0098] like Fig.12As shown, the front-opening luggage case structure 3 of the third embodiment of the present invention is substantially the same as the first embodiment in terms of structure, and the main difference is that the present embodiment provides another first shell 11 ″. The first shell 11 ″ of the present embodiment is substantially the same as the first shell 11 of the first embodiment, and the difference is that the engaging section 15 ′ of the first annular flange 14 ′ has a horizontal section 16 ′ extending horizontally in a direction away from the opening 23, a straight section 16A connecting the horizontal section 16 ′, and a convex structure 16B protruding from the straight section 16A in a direction away from the opening 23, the convex structure 16B abuts against the first abutting wall 31 of the support frame 30, and the straight section 16A abuts against the second abutting wall 34 of the support frame 30, so that the engaging section 15 ′ of the first annular flange 14 ′ is tightly engaged in the engaging groove 36 of the support frame 30. It should be supplemented here that the convex structure 16B can be a convex point, a convex rib or a convex block, and in the present embodiment, the convex point is used as the embodiment. In this way, the convex structure 16B can be selected in different styles according to the manufacturer's requirements.

[0099] The use functions of the front-opening luggage case structures 2 and 3 of the second and third embodiments are completely the same as those of the front-opening luggage case structure 1 of the first embodiment, and thus will not be described in detail.

[0100] In summary, when the outer cover 50 provided by the front-opening luggage case structures 1, 2, and 3 of the present invention is pressed by the aforementioned external force, the second annular flange 52 of the outer cover 50 abuts against the annular convex rib 37 of the support frame 30, so that the outer cover 50 is not easily sunk into the opening 23 of the case shell 10. In addition, since the first chain piece 71 of the zipper 70 provided by the front-opening luggage case structure 1 of the present invention is fixed to the support frame 30, the first chain piece 71 and the support frame 30 can be installed to the case shell 10 together, or the first chain piece 71 and the support frame 30 can be removed from the case shell 10 together and replaced with a new first chain piece 71. Such a special structural design makes it easy to install and replace the zipper 70.

[0101] Finally, it must be stated again that the constituent elements disclosed in the above-mentioned implementation of the present invention are only for illustrative purposes and are not intended to limit the scope of the present invention. Replacements or changes of other equivalent elements should also be covered by the patent scope of the present invention.

[0102] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims of the present invention.

Claims

1. A front-opening luggage case structure, characterized in that: include: A box shell, comprising a first side wall, a first annular flange extending inwardly from the first side wall, and an opening surrounded by the first annular flange, wherein the first annular flange comprises an embedded segment and a connecting segment connected to the embedded segment, and the opening communicates the interior and the exterior of the box shell; A support frame having a first abutting wall, an annular rib protruding from the first abutting wall, and an engaging groove, wherein the engaging groove and the engaging section of the first annular flange engage with each other, and the first abutting wall is detachably fixed to the coupling section of the first annular flange; An outer cover, arranged outside the box shell and corresponding to the opening of the box shell, the outer cover has a second annular flange; as well as A zipper having a first chain piece and a second chain piece meshed with each other, wherein the first chain piece is fixed to the annular rib of the support frame, and the second chain piece is fixed to the second annular flange of the outer cover; When the outer cover is pressed by an external force, the second annular flange of the outer cover abuts against the annular rib of the support frame.

2. The front-opening luggage case structure according to claim 1, characterized in that: The support frame also has a second abutting wall opposite to the first abutting wall, the embedding groove is formed between the first abutting wall and the second abutting wall, and the embedding section of the first annular flange abuts against the first abutting wall and the second abutting wall.

3. The front-opening luggage case structure according to claim 2, characterized in that: The engaging section of the first annular flange comprises a horizontal section extending horizontally in a direction away from the opening, a first segment vertically connected to the horizontal section, and a second segment arc-shapedly connected to the first segment; The first section abuts against the first abutting wall of the support frame, and the second section abuts against the second abutting wall of the support frame.

4. The front-opening luggage case structure according to claim 3, characterized in that: The support frame also has a connecting wall connecting the first abutting wall and the second abutting wall; the embedded segment of the first annular flange also has a third segment connected to the second segment, and the third segment abuts against the first abutting wall and the connecting wall of the support frame.

5. The front-opening luggage case structure according to claim 2, characterized in that: The embedding section of the first annular flange has a horizontal section extending horizontally in a direction away from the opening, a straight section connecting the horizontal section, and a convex structure extending from the straight section in a direction away from the opening, the convex structure abuts against the first abutment wall of the support frame, and the straight section abuts against the second abutment wall of the support frame.

6. The front-opening luggage case structure according to claim 5, characterized in that: The convex structure of the embedding section is a convex point, a convex rib or a convex block.

7. The front-opening luggage case structure according to claim 1, characterized in that: The first annular flange also has a plurality of first holes extending therethrough; the first abutting wall of the support frame also has a plurality of second holes extending therethrough; the front-opening luggage box structure further includes a plurality of fixing members, each of which is penetrated and fixed in each of the first holes and each of the second holes.

8. The front-opening luggage case structure according to claim 7, characterized in that: The coupling section of the first annular flange also has a plurality of recessed positioning grooves, each of which is connected to one of the first holes; the first abutting wall of the support frame also has a plurality of protruding positioning blocks, each of which is penetrated by one of the second holes, and each of which is accommodated in one of the positioning grooves.

9. The front-opening luggage case structure according to claim 1, characterized in that: The first chain piece has a first chain tooth portion and a first fixing portion, the first chain tooth portion is fixed to the first fixing portion, and the first fixing portion is fixed to the annular convex rib of the support frame; the second chain piece has a second chain tooth portion and a second fixing portion, the second chain tooth portion is fixed to the second fixing portion and meshed with the first chain tooth portion, and the second fixing portion is fixed to the second annular flange of the outer cover.

10. The front-opening luggage case structure according to claim 9, characterized in that: It further includes a first rubber sleeve and a second rubber sleeve, the first rubber sleeve is sleeved on the annular convex rib of the support frame, and the first fixing portion of the first chain plate is indirectly fixed to the annular convex rib of the support frame through the first rubber sleeve; the second rubber sleeve is sleeved on the second annular flange of the outer cover, and the second fixing portion of the second chain plate is indirectly fixed to the second annular flange of the outer cover through the second rubber sleeve.

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