Middle frame and assembly structure of injection molding luggage case

Abstract

The utility model discloses a middle frame and assembly structure of an injection molding luggage case, which comprises a first case shell, a second case shell, a first frame, a second frame, a first frame zipper and a second frame zipper, the main body of the first frame is arranged at the opening part of the first case shell, and both the first frame and the opening part of the first case shell are provided with inverted buckle structures; the first frame is clamped and fixed with the inverted buckle structure of the opening part of the first box shell, and the inverted buckle structure of the first frame is engaged with the inverted buckle structure of the opening part of the first box shell; the main body of the second frame is arranged at the opening part of the second box shell, the second frame and the opening part of the second box shell are respectively provided with an inverted buckling structure, the second frame and the inverted buckling structure of the opening part of the second box shell are clamped and fixed, and the inverted buckling structure of the second frame and the inverted buckling structure of the opening part of the second box shell are meshed with each other; the first frame zipper is arranged at the top of the first frame, and the inner side is clamped with the first frame; the second frame zipper is arranged at the top of the second frame, and the inner side is clamped with the second frame; and the outer side of the first frame zipper and the outer side of the second frame zipper are mutually zipped to form a closed inner space of the box body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of luggage, especially to a middle frame and assembly structure of injection molding luggage. BACKGROUND

[0002] In the currently commonly used luggage, a set of frames with concave-convex fitting is arranged on the opening edge of the front and rear side shells, which aims to increase the use strength of the luggage and improve the closure matching degree and tightness of the two side shells, facilitating user use.

[0003] The prior art uses rivet riveting to fix the frame after bending and forming to the opening of the shell, and the fixing method is simple in principle and is the most widely used in the industry, but it is inconvenient to operate and low in production efficiency in actual production and use, and riveting with rivets requires a via hole for the rivet, multiple via hole fixing points must be provided, resulting in more steps for binding and more pre-processes. When the overlapping hole is provided at the splicing overlapping position, misalignment often occurs and needs to be corrected manually, which is not easy to operate. Meanwhile, the riveting of the rivet requires an operator to hold the box body to operate the riveting machine, and when the box body is large, the operation convenience is very low, the worker is easily tired, and the production efficiency and safety are affected. Because the number of rivets is large, the production efficiency is low, and the production cost of the product is increased.

[0004] The structure between the two rivets is weak in strength and prone to gaps, and even if the rivets are arranged densely, there will always be a certain distance between the adjacent rivets, which is not completely fixed, the structure strength is low, and the overall fixing strength is not ideal. When local collision deformation occurs, the frame and the shell are easily separated to form a gap, affecting the appearance and the user's product experience.

[0005] The exposed rivets affect the appearance of the luggage, and the rivets are exposed on the outside of the frame, and the number is large, which affects the overall appearance of the luggage. UTILITY MODEL CONTENTS

[0006] In order to overcome the deficiencies in the prior art, the utility model provides a middle frame and assembly structure of injection molding luggage, which can effectively increase the assembly efficiency of the frame and the shell, improve the stable linkage between the frame and the shell, and improve the overall appearance of the luggage.

[0007] In order to achieve the above utility model purposes and solve the technical problems, the technical scheme adopted is as follows:

[0008] The utility model provides an injection molding luggage middle frame and assembly structure, including first box shell, second box shell, first frame, second frame, first frame zipper and second frame zipper, wherein:

[0009] The main body of the first frame is arranged at the mouth of the first box shell, the first frame and the mouth of the first box shell are provided with reverse buckling structures, the reverse buckling structures of the first frame and the mouth of the first box shell are clamped and fixed, and the reverse buckling structures of the first frame and the mouth of the first box shell are engaged with each other.

[0010] The main body of the second frame is arranged at the mouth of the second box shell, the second frame and the mouth of the second box shell are provided with reverse buckling structures, the reverse buckling structures of the second frame and the mouth of the second box shell are clamped and fixed, and the reverse buckling structures of the second frame and the mouth of the second box shell are engaged with each other.

[0011] The first frame zipper is arranged at the top of the first frame, and the inner side of the first frame zipper is clamped with the first frame.

[0012] The second frame zipper is arranged at the top of the second frame, and the inner side of the second frame zipper is clamped with the second frame.

[0013] The outer side of the first frame zipper and the outer side of the second frame zipper are pulled together to form a closed box interior space.

[0014] Further, the first box shell comprises a first box shell body, a first box shell internal reinforcing part and a first box shell surface layer extension part, wherein:

[0015] The first box shell internal reinforcing part is fixedly connected to the left end of the first box shell body.

[0016] The first box shell surface layer extension part is located above the first box shell internal reinforcing part and extends obliquely leftwards from the connection position between the first box shell internal reinforcing part and the first box shell body.

[0017] The length of the first box shell internal reinforcing part is longer than the length of the first box shell surface layer extension part.

[0018] Further, the first box shell further comprises a first box shell clamping strip and a first box shell fastener, wherein:

[0019] The first box shell clamping strip is in L-shaped structure, the vertical part of the first box shell clamping strip is in abutment with the left end of the first box shell internal reinforcing part, the horizontal part of the first box shell clamping strip is in abutment with the lower surface of the first box shell internal reinforcing part, and the first box shell clamping strip and the first box shell internal reinforcing part are fixedly connected through the first box shell fastener.

[0020] The right end of the horizontal part of the first box shell clamping strip is inclined downward.

[0021] Further, the first box shell further comprises a first box shell clamping portion, which is located below the left side of the first box shell internal reinforcing portion and gradually inclines downward from left to right.

[0022] Further, the first frame comprises a first frame right side extension, a first frame internal lining steel wire installation slot, a first frame internal lining zipper installation slot, a first frame left side support rib, a first frame zipper installation slot, a first frame top butt joint portion, a first frame clamping assembly slot, and a first frame reverse buckling portion, wherein:

[0023] The first frame right side extension is arranged on the right side of the first frame and is in a state of being higher on the left side and lower on the right side, and is used for guiding the first box shell;

[0024] The first frame internal lining zipper installation slot is arranged at a position deviated to the right in the middle of the first frame, and the opening thereof faces downward, and is used for accommodating the internal lining;

[0025] The first frame internal lining steel wire installation slot is arranged in the middle of the first frame, and the opening thereof faces downward, and is used for accommodating the internal lining fixing steel wire, so as to connect the internal lining fixing portion wrapped around the periphery of the internal lining fixing steel wire and the first frame;

[0026] The first frame left side support rib is arranged on the left side of the first frame, and is used for commonly supporting the first frame zipper and the second frame zipper with the second frame, and enabling the opposite surfaces of the first frame and the second frame to abut against each other in the state that the first frame zipper and the second frame zipper are pulled together;

[0027] The first frame zipper installation slot is arranged on the top of the first frame, and the opening thereof faces the left side, and is used for accommodating the inner side of the first frame zipper;

[0028] The first frame top butt joint portion is arranged horizontally on the top of the first frame and is located on the right side of the first frame zipper installation slot;

[0029] The first frame clamping assembly slot is arranged in the middle of the first frame, and the opening thereof faces the right side, and is used for clamping the first box shell;

[0030] The first frame reverse buckling portion is vertically arranged at the right side opening of the first frame clamping assembly slot, and is used for clamping the first box shell.

[0031] Further, the first frame top butt joint portion comprises a first frame top butt joint portion outer side abutment portion and a first frame top butt joint portion outward extension portion, when the first box shell is buckled with the first frame:

[0032] The right end of the first frame top butt joint portion outer side abutment portion abuts against the left end of the first box shell surface layer extension portion.

[0033] The upper surface of the outward extension of the first frame top butt joint portion is in abutment with the lower surface of the first box shell surface layer extension.

[0034] Further, the second box shell comprises a second box shell body, a second box shell internal reinforcing portion, and a second box shell surface layer extension, wherein:

[0035] The second box shell internal reinforcing portion is fixedly connected to the right end of the second box shell body;

[0036] The second box shell surface layer extension is located above the second box shell internal reinforcing portion and extends obliquely to the right from the connection between the second box shell internal reinforcing portion and the second box shell body;

[0037] The length of the second box shell internal reinforcing portion is longer than the length of the second box shell surface layer extension.

[0038] Further, the second box shell further comprises a second box shell clamping strip and a second box shell fastener, wherein:

[0039] The second box shell clamping strip is in an L-shaped structure, the vertical part of which is in abutment with the right end of the second box shell internal reinforcing portion, and the horizontal part of which is in abutment with the lower surface of the second box shell internal reinforcing portion, and the second box shell clamping strip and the second box shell internal reinforcing portion are fixedly connected through the second box shell fastener;

[0040] The left end of the horizontal part of the second box shell clamping strip is inclined downward.

[0041] Further, the second box shell further comprises a second box shell clamping portion, which is located below the right side of the second box shell internal reinforcing portion and gradually inclines downward from right to left.

[0042] Further, the second frame comprises a second frame left side extension, a second frame internal lining steel wire installation slot, a second frame internal lining zipper installation slot, a second frame right side support rib, a second frame zipper installation slot, a second frame top butt joint portion, a second frame clamping assembly slot, and a second frame reverse buckle portion, wherein:

[0043] The second frame left side extension is provided on the left side of the second frame and is in a right-high left-low state, and is used for guiding the second box shell;

[0044] The second frame internal lining zipper installation slot is provided at a left-biased position in the middle of the second frame, and the opening thereof faces downward, and is used for accommodating the internal lining;

[0045] The second frame inner lining steel wire mounting groove is arranged in the middle of the second frame, and its opening faces downward, used for accommodating the inner lining fixing steel wire, and then the inner lining fixing part wrapped around the outer periphery of the inner lining fixing steel wire is connected with the second frame;

[0046] The second frame right side supporting rib is arranged on the right side of the second frame, used for supporting the first frame zipper and the second frame zipper together, and making the opposite surfaces of the first frame and the second frame abut against each other in the state that the first frame zipper and the second frame zipper are pulled together;

[0047] The second frame zipper mounting groove is arranged on the top of the second frame, and its opening faces the right side, used for accommodating the inner side of the second frame zipper;

[0048] The second frame top abutting part is horizontally arranged on the top of the second frame, and located on the left side of the second frame zipper mounting groove;

[0049] The second frame clamping assembly groove is arranged in the middle of the second frame, and its opening faces the left side, used for clamping the second box shell;

[0050] The second frame reverse buckling part is vertically arranged on the left opening of the second frame clamping assembly groove, used for clamping the second box shell.

[0051] Further, the second frame top abutting part comprises a second frame top abutting part outer side abutting part and a second frame top abutting part outward extending part, when the second box shell is buckled with the second frame:

[0052] The left end of the second frame top abutting part outer side abutting part abuts against the right end of the second box shell surface layer extending part;

[0053] The upper surface of the second frame top abutting part outward extending part abuts against the lower surface of the second box shell surface layer extending part.

[0054] Compared with the prior art, the above technical scheme has the following advantages and positive effects:

[0055] 1、The middle frame and assembly structure of the injection molding luggage case, the horizontal width of the frame clamping assembly groove and the horizontal width of the box shell clamping strip (buckle) are matched, used for preventing the connection between the box shell and the frame from loosening, thereby enhancing the clamping strength of the frame and the box shell and reducing the risk of separation of the frame and the box shell;

[0056] 2, the utility model discloses a middle frame and assembly structure of injection molding suitcase, and the reverse buckle of the installation postframe and box shell are mutually tightly matched, effectively guarantee the connection stability between the postframe and box shell, do not need to be linked through rivet or other mode any longer, improve the overall aesthetic property and assembly efficiency of travel suitcase.

[0057] 3, the utility model discloses a middle frame and assembly structure of injection molding suitcase, and the reverse buckle of the installation postframe and box shell are mutually tightly matched, effectively guarantee the connection stability between the postframe and box shell, do not need to be linked through rivet or other mode any longer, improve the overall aesthetic property and assembly efficiency of travel suitcase. BRIEF DESCRIPTION OF DRAWINGS

[0058] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be to the embodiment description needed to use the drawing briefly introduced. Obviously, the following description in the drawing is only some embodiments of the utility model, and for those skilled in the art, under the premise of not paying the creative labor, other drawings can also be obtained according to these drawings. In the drawings:

[0059] Figure 1 It is the overall structure schematic diagram of the middle frame and assembly structure of injection molding suitcase for the suitcase of the utility model;

[0060] Figure 2 It is the cross section structure schematic diagram of the middle frame and assembly structure of injection molding suitcase for the suitcase of the utility model;

[0061] Figure 3 It is the overall structure first schematic diagram of the middle frame and assembly structure of injection molding suitcase of the utility model;

[0062] Figure 4 It is the overall structure first exploded schematic diagram of the middle frame and assembly structure of injection molding suitcase of the utility model;

[0063] Figure 5 It is the first box shell and the first frame clamping step first schematic diagram in the middle frame and assembly structure of injection molding suitcase of the utility model;

[0064] Figure 6 It is the overall structure second schematic diagram of the middle frame and assembly structure of injection molding suitcase of the utility model;

[0065] Figure 7 It is the overall structure second exploded schematic diagram of the middle frame and assembly structure of injection molding suitcase of the utility model;

[0066] Figure 8 It is the first box shell and the first frame clamping step second schematic diagram in the middle frame and assembly structure of injection molding suitcase of the utility model.

[0067]

MAIN SYMBOL EXPLANATION

[0068] 1 - first box shell; 11 - first box shell body; 12 - first box shell inner reinforcement; 13 - first box shell surface layer extension; 14 - first box shell inner connecting rib; 15 - first box shell clamping strip; 16 - first box shell fastener; 17 - first box shell clamping part;

[0069] 2 - second box shell; 21 - second box shell body; 22 - second box shell inner reinforcement; 23 - second box shell surface layer extension; 24 - second box shell inner connecting rib; 25 - second box shell clamping strip; 26 - second box shell fastener; 27 - second box shell clamping part;

[0070] 3 - first frame; 31 - first frame right side extension; 32 - first frame inner lining steel wire installation groove; 33 - first frame inner lining zipper installation groove; 34 - first frame left side supporting rib; 35 - first frame zipper installation groove; 36 - first frame top butt joint part; 361 - first frame top butt joint part outside abutment part; 362 - first frame top butt joint part outward extension; 37 - first frame clamping assembly groove; 38 - first frame reverse buckling part;

[0071] 4 - second frame; 41 - second frame left side extension; 42 - second frame inner lining steel wire installation groove; 43 - second frame inner lining zipper installation groove; 44 - second frame right side supporting rib; 45 - second frame zipper installation groove; 46 - second frame top butt joint part; 461 - second frame top butt joint part outside abutment part; 462 - second frame top butt joint part outward extension; 47 - second frame clamping assembly groove; 48 - second frame reverse buckling part;

[0072] 5 - first frame zipper;

[0073] 6 - second frame zipper;

[0074] 7 - inner lining fixed steel wire;

[0075] 8 - inner lining fixed part. DETAILED DESCRIPTION

[0076] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0077] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0078] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0079] like Figures 1-8 As shown, this embodiment discloses a mid-frame and assembly structure for an injection-molded suitcase, including a first shell 1, a second shell 2, a first frame 3, a second frame 4, a first frame zipper 5, and a second frame zipper 6, wherein:

[0080] The main body of the first frame 3 is located at the opening of the first box shell 1. Both the opening of the first frame 3 and the opening of the first box shell 1 are provided with a snap-fit ​​structure. The first frame 3 is snapped and fixed to the snap-fit ​​structure at the opening of the first box shell 1. The snap-fit ​​structure of the first frame 3 and the snap-fit ​​structure at the opening of the first box shell 1 are interlocked with each other.

[0081] The main body of the second frame 4 is located at the opening of the second box shell 2. Both the openings of the second frame 4 and the second box shell 2 are provided with a snap-fit ​​structure. The second frame 4 is snapped and fixed to the snap-fit ​​structure at the opening of the second box shell 2. The snap-fit ​​structure of the second frame 4 and the snap-fit ​​structure at the opening of the second box shell 2 interlock with each other.

[0082] The first frame zipper 5 is located at the top of the first frame 3, and its inner side is engaged with the first frame 3.

[0083] The second frame zipper 6 is located at the top of the second frame 4, and its inner side is engaged with the second frame 4.

[0084] The outer sides of the first frame zipper 5 and the outer sides of the second frame zipper 6 are pulled together to form a closed internal space of the box.

[0085] refer to Figure 3、 4 The first box shell 1 comprises a first box shell body 11, a first box shell internal reinforcing part 12, and a first box shell surface layer extension part 13, wherein:

[0086] The first box shell internal reinforcing part 12 is fixedly connected to the left end of the first box shell body 11.

[0087] The first box shell surface layer extension part 13 is located above the first box shell internal reinforcing part 12 and extends obliquely leftward from the joint of the first box shell internal reinforcing part 12 and the first box shell body 11.

[0088] The length of the first box shell internal reinforcing part 12 is longer than the length of the first box shell surface layer extension part 13.

[0089] In a preferred embodiment, the first box shell 1 further comprises a first box shell internal connecting rib 14, which is vertically connected between the first box shell internal reinforcing part 12 and the first box shell surface layer extension part 13 and forms a first box shell internal reinforcing cavity with an opening leftward with the first box shell internal reinforcing part 12 and the first box shell surface layer extension part 13, which can effectively enhance the support strength of the mouth of the first box shell 1.

[0090] Further referring to Figures 6-8 In an embodiment, the first box shell 1 further comprises a first box shell clamping strip 15 and a first box shell fastener 16, wherein:

[0091] The first box shell clamping strip 15 has an L-shaped structure, with its vertical part abutting against the left end of the first box shell internal reinforcing part 12 and its horizontal part abutting against the lower surface of the first box shell internal reinforcing part 12, and the first box shell clamping strip 15 and the first box shell internal reinforcing part 12 are fixedly connected through the first box shell fastener 16.

[0092] The right end of the horizontal part of the first box shell clamping strip 15 is downwardly inclined.

[0093] Preferably, the first box shell body 11, the first box shell internal reinforcing part 12, and the first box shell surface layer extension part 13 are integrally formed or stamp-formed, which effectively increases the service life of the first box shell 1.

[0094] Further referring to Figures 3-5In another embodiment, the first box shell 1 further comprises a first box shell clamping portion 17, which is located below the left side of the first box shell inner reinforcing portion 12 and gradually inclines downward from left to right. Preferably, the first box shell body 11, the first box shell inner reinforcing portion 12, the first box shell surface layer extension portion 13, and the first box shell clamping portion 17 are integrally formed or stamp-formed, effectively increasing the service life of the first box shell 1. Compared with the first box shell clamping strip 15 and the first box shell fastener 16 described above, the first box shell clamping portion 17 in this embodiment has better integrity and higher firmness.

[0095] With reference to Figure 3 、 4 , 6 and 7, the first frame 3 comprises a first frame right side extension portion 31, a first frame inner lining steel wire mounting groove 32, a first frame inner lining zipper mounting groove 33, a first frame left side support rib 34, a first frame zipper mounting groove 35, a first frame top butt joint portion 36, a first frame clamping assembly groove 37, and a first frame reverse buckling portion 38, wherein:

[0096] The first frame right side extension portion 31 is arranged on the right side of the first frame 3 and has a left-high right-low state, and is used for guiding the first box shell 1;

[0097] The first frame inner lining zipper mounting groove 33 is arranged at a position slightly right of the middle of the first frame 3, and has an opening facing downward, and is used for accommodating the inner lining;

[0098] The first frame inner lining steel wire mounting groove 32 is arranged at the middle of the first frame 3, and has an opening facing downward, and is used for accommodating the inner lining fixing steel wire 7, and further connecting the inner lining fixing portion 8 wrapped around the periphery of the inner lining fixing steel wire 7 and the first frame 3;

[0099] The first frame left side support rib 34 is arranged on the left side of the first frame 3, and is used for commonly supporting the first frame zipper 5 and the second frame zipper 6 with the second frame 4, and making the opposite surfaces of the first frame 3 and the second frame 4 abut against each other in the closed state of the first frame zipper 5 and the second frame zipper 6;

[0100] The first frame zipper mounting groove 35 is arranged at the top of the first frame 3, and has an opening facing the left side, and is used for accommodating the inner side of the first frame zipper 5;

[0101] The first frame top butt joint portion 36 is transversely arranged at the top of the first frame 3 and located at the right side of the first frame zipper mounting groove 35;

[0102] The first frame clamping assembly slot 37 is arranged in the middle of the first frame 3, and its opening faces the right side, used for clamping the first box shell 1.

[0103] The first frame reverse buckling part 38 is vertically arranged at the right opening of the first frame clamping assembly slot 37, used for clamping the first box shell 1.

[0104] Further, the first frame top butt joint part 36 includes a first frame top butt joint part outer side abutment part 361 and a first frame top butt joint part outward extension part 362 connected in an L shape, when the first box shell 1 is buckled with the first frame 3:

[0105] The right end of the first frame top butt joint part outer side abutment part 361 abuts against the left end of the first box shell surface layer extension part 13; the upper surface of the first frame top butt joint part outward extension part 362 abuts against the lower surface of the first box shell surface layer extension part 13; and the first frame reverse buckling part 38 abuts against the right end of the first box shell clamping part 17 or the first box shell clamping strip 15.

[0106] In this embodiment, the transverse width of the first frame clamping assembly slot 37 and the transverse width of the first box shell clamping part 17 or the first box shell clamping strip 15 are adapted, used for preventing the first box shell 1 from being loose with the first frame 3.

[0107] Reference Figure 3 , 4 , 6 and 7, the second box shell 2 includes a second box shell body 21, a second box shell internal reinforcing part 22, and a second box shell surface layer extension part 23, wherein:

[0108] The second box shell internal reinforcing part 22 is fixedly connected to the right end of the second box shell body 21;

[0109] The second box shell surface layer extension part 23 is located above the second box shell internal reinforcing part 22 and extends obliquely to the right from the connection between the second box shell internal reinforcing part 22 and the second box shell body 21;

[0110] The length of the second box shell internal reinforcing part 22 is longer than the length of the second box shell surface layer extension part 23.

[0111] Preferably, the second box shell 2 further includes a second box shell internal connecting rib 24, which is vertically connected between the second box shell internal reinforcing part 22 and the second box shell surface layer extension part 23, and forms a second box shell internal reinforcing cavity with an opening facing right with the second box shell internal reinforcing part 22 and the second box shell surface layer extension part 23, which can effectively enhance the support strength of the mouth part of the second box shell 2.

[0112] Further referenceFigures 6-8 In one embodiment, the second case 2 further comprises a second case clamping strip 25 and a second case fastener 26, wherein:

[0113] The second case clamping strip 25 is in L-shaped structure, the vertical part of which is in abutment with the right end of the second case internal reinforcing part 22, and the horizontal part of which is in abutment with the lower surface of the second case internal reinforcing part 22, and the second case clamping strip 25 and the second case internal reinforcing part 22 are fixedly connected through the second case fastener 26;

[0114] The left end of the horizontal part of the second case clamping strip 25 is downwardly inclined.

[0115] Preferably, the second case body 21, the second case internal reinforcing part 22, and the second case surface layer extension part 23 are integrally formed or stamp-formed, effectively increasing the service life of the second case 2.

[0116] Further referring to Figures 3-5 In another embodiment, the second case 2 further comprises a second case clamping part 27, which is located below the right side of the second case internal reinforcing part 22 and gradually downwardly inclined from right to left. Preferably, the second case body 21, the second case internal reinforcing part 22, the second case surface layer extension part 23, and the second case clamping part 27 are integrally formed or stamp-formed, effectively increasing the service life of the second case 2. Compared with the scheme of the second case clamping strip 25 and the second case fastener 26, in this embodiment, the scheme of the second case clamping part 27 has better integrity and higher firmness.

[0117] Continuing to refer to Figure 3 , 4 , 6 and 7, the second frame 4 comprises a second frame left side extension part 41, a second frame internal lining steel wire mounting groove 42, a second frame internal lining zipper mounting groove 43, a second frame right side support rib 44, a second frame zipper mounting groove 45, a second frame top butt joint part 46, a second frame clamping assembly groove 47, and a second frame reverse buckling part 48, wherein:

[0118] The second frame left side extension part 41 is arranged on the left side of the second frame 4 and is in right-high left-low state, used for guiding the second case 2;

[0119] The second frame internal lining zipper mounting groove 43 is arranged at the left part of the middle part of the second frame 4, and the opening thereof faces downward, used for accommodating the internal lining;

[0120] The second frame inner lining steel wire installation slot 42 is arranged in the middle of the second frame 4, and its opening faces downward, used for accommodating the inner lining fixing steel wire 7, and then connecting the inner lining fixing part 8 wrapped around the outer periphery of the inner lining fixing steel wire 7 and the second frame 4;

[0121] The second frame right side supporting rib 44 is arranged on the right side of the second frame 4, used for commonly supporting the first frame zipper 5 and the second frame zipper 6 with the first frame 3, and making the opposite surfaces of the first frame 3 and the second frame 4 abut against each other in the pulled-together state of the first frame zipper 5 and the second frame zipper 6;

[0122] The second frame zipper installation slot 45 is arranged on the top of the second frame 4, and its opening faces the right side, used for accommodating the inner side of the second frame zipper 6;

[0123] The second frame top abutting part 46 is arranged horizontally on the top of the second frame 4, and located on the left side of the second frame zipper installation slot 45;

[0124] The second frame clamping assembly slot 47 is arranged in the middle of the second frame 4, and its opening faces the left side, used for clamping the second box shell 2;

[0125] The second frame reverse buckling part 48 is vertically arranged at the left opening of the second frame clamping assembly slot 47, used for clamping the second box shell 2.

[0126] Further, the second frame top abutting part 46 includes a second frame top abutting part outer side abutting part 461 and a second frame top abutting part outward extension part 462 connected in an L shape, when the second box shell 2 is buckled with the second frame 4:

[0127] The left end of the second frame top abutting part outer side abutting part 461 abuts against the right end of the second box shell surface layer extension part 23; the upper surface of the second frame top abutting part outward extension part 462 abuts against the lower surface of the second box shell surface layer extension part 23; and the second frame reverse buckling part 48 abuts against the left end of the second box shell clamping part 27 or the second box shell clamping strip 25.

[0128] In this embodiment, the horizontal width of the second frame clamping assembly slot 47 and the horizontal width of the second box shell clamping part 27 or the second box shell clamping strip 25 are matched, used for preventing the second box shell 2 from being loose with the second frame 4.

[0129] Specific working principle:

[0130] As Figure 5or 8, the first case 1 is inserted into the first frame 3 along the arrow direction to the left, and a little force is needed to insert the first case 1 into the first frame 3. The first case clamping portion 17 (as shown in Figure 5 ) or the first case clamping strip 15 (as shown in Figure 8 ) is first moved transversely along the right side extension 31 of the first frame in a left-high right-low state to the first frame clamping assembly slot 37. The first frame top abutting portion 36 is lifted upward by the first case inner reinforcing portion 12, and the first frame right side extension 31 is lifted downward by the first case inner reinforcing portion 12. The first case inner reinforcing portion 12 and the first case clamping portion 17 (as shown in Figure 5 ) / the first case clamping strip 15 (as shown in Figure 8 ) pass through the right side entrance of the first frame clamping assembly slot 37 in sequence. The left side of the first case surface layer extension 13 abuts against the right side of the first frame top abutting portion outer side abutting portion 361. The first case clamping portion 17 (as shown in Figure 5 ) / the first case clamping strip 15 (as shown in Figure 8 ) abut against the inner side of the first frame reverse buckling portion 38, forming a mutual clamping state. At this time, the first frame top abutting portion outward extension 362 is inserted into the left-opening first case inner reinforcing cavity, so that the first case 1 is clamped and fixed in the first frame clamping assembly slot 37 and cannot be taken out.

[0131] Similarly, as shown in Figure 5 or 8, the second case 2 is inserted into the second frame 4 along the arrow direction to the right, and a little force is needed to insert the second case 2 into the second frame 4. The second case clamping portion 27 (as shown in Figure 5 ) or the second case clamping strip 25 (as shown in Figure 8 ) is first moved transversely along the left side extension 41 of the second frame in a right-high left-low state to the second frame clamping assembly slot 47. The second frame top abutting portion 46 is lifted upward by the second case inner reinforcing portion 22, and the second frame left side extension 41 is lifted downward by the second case inner reinforcing portion 22. The second case inner reinforcing portion 22 and the second case clamping portion 27 (as shown in Figure 5 ) / the second case clamping strip 25 (as shown in Figure 8 ) pass through the left side entrance of the second frame clamping assembly slot 47 in sequence. The right side of the second case surface layer extension 23 abuts against the left side of the second frame top abutting portion outer side abutting portion 461. The second case clamping portion 27 (as shown in Figure 5 ) / the second case clamping strip 25 (as shown in Figure 8 ) abut against the inner side of the second frame reverse buckling portion 48, forming a mutual clamping state. At this time, the second frame top abutting portion outward extension 462 is inserted into the right-opening second case inner reinforcing cavity, so that the second case 2 is clamped and fixed in the second frame clamping assembly slot 47 and cannot be taken out.

[0132] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A mid-frame and assembly structure for an injection-molded suitcase, characterized in that, The first box shell, the second box shell, the first frame, the second frame, the first frame zipper and the second frame zipper are provided. The main body of the first frame is arranged at the opening of the first box shell, and the first frame and the opening of the first box shell are provided with reverse buckle structures, the reverse buckle structures of the first frame and the opening of the first box shell are clamped and fixed, and the reverse buckle structures of the first frame and the opening of the first box shell are engaged with each other. The main body of the second frame is arranged at the opening of the second box shell, and the second frame and the opening of the second box shell are provided with reverse buckle structures, the reverse buckle structures of the second frame and the opening of the second box shell are clamped and fixed, and the reverse buckle structures of the second frame and the opening of the second box shell are engaged with each other. The first frame zipper is arranged at the top of the first frame, and the inner side of the first frame zipper is clamped with the first frame. The second frame zipper is arranged at the top of the second frame, and the inner side of the second frame zipper is clamped with the second frame. The outer side of the first frame zipper and the outer side of the second frame zipper are pulled together to form a closed box interior space.

2. The middle frame and assembling structure of an injection-molded luggage case according to claim 1, wherein The first box shell comprises a first box shell body, a first box shell internal reinforcing part and a first box shell surface layer extension part. The first box shell internal reinforcing part is fixedly connected to the left end of the first box shell body. The first box shell surface layer extension part is located above the first box shell internal reinforcing part and extends obliquely leftward from the connection position between the first box shell internal reinforcing part and the first box shell body. The length of the first box shell internal reinforcing part is longer than the length of the first box shell surface layer extension part.

3. The midframe and assembly structure of an injection-molded luggage case according to claim 2, characterized in that, The first box shell further comprises a first box shell clamping strip and a first box shell fastener. The first box shell clamping strip is in an L-shaped structure, the vertical part of the first box shell clamping strip is in abutment with the left end of the first box shell internal reinforcing part, the horizontal part of the first box shell clamping strip is in abutment with the lower surface of the first box shell internal reinforcing part, and the first box shell clamping strip and the first box shell internal reinforcing part are fixedly connected through the first box shell fastener. The right end of the horizontal part of the first box shell clamping strip is downwardly inclined.

4. The midframe and assembly structure of an injection-molded luggage case according to claim 2, wherein The first box shell further comprises a first box shell clamping part, which is located below the left side of the first box shell internal reinforcing part and gradually downwardly inclined from left to right.

5. The midframe and assembly structure of an injection-molded luggage case according to claim 2, wherein The first frame comprises a first frame right side extension part, a first frame internal lining steel wire installation groove, a first frame internal lining zipper installation groove, a first frame left side support rib, a first frame zipper installation groove, a first frame top butt joint part, a first frame clamping assembly groove and a first frame reverse buckle part. The first frame right side extension part is arranged at the right side of the first frame and is in a left-high right-low state, and is used for guiding the first box shell. The first frame internal lining zipper installation groove is arranged at the right side of the middle part of the first frame, and the opening of the first frame internal lining zipper installation groove faces downward, and is used for accommodating the internal lining. The first frame internal lining steel wire installation groove is arranged at the middle part of the first frame, and the opening of the first frame internal lining steel wire installation groove faces downward, and is used for accommodating the internal lining fixing steel wire, and the internal lining fixing part wrapped around the periphery of the internal lining fixing steel wire is connected with the first frame. The first frame left side supporting rib is arranged on the left side of the first frame, and is used for supporting the first frame zipper and the second frame zipper together, and making the opposite surfaces of the first frame and the second frame abut against each other in the closed state of the first frame zipper and the second frame zipper. The first frame zipper mounting groove is arranged on the top of the first frame, and the opening of the first frame zipper mounting groove faces the left side, and is used for accommodating the inner side of the first frame zipper. The first frame top abutting portion is arranged on the top of the first frame, and is located on the right side of the first frame zipper mounting groove. The first frame clamping assembly groove is arranged on the middle part of the first frame, and the opening of the first frame clamping assembly groove faces the right side, and is used for clamping the first box shell. The first frame reverse clamping portion is vertically arranged on the right opening of the first frame clamping assembly groove, and is used for clamping the first box shell.

6. The midframe and assembly structure of an injection-molded luggage case according to claim 5, wherein The first frame top abutting portion includes a first frame top abutting portion outer side abutting portion and a first frame top abutting portion outward extending portion, and when the first box shell is buckled with the first frame: The right end of the first frame top abutting portion outer side abutting portion abuts against the left end of the first box shell surface layer extending portion; The upper surface of the first frame top abutting portion outward extending portion abuts against the lower surface of the first box shell surface layer extending portion.

7. The injection-molded luggage midframe and assembly structure of claim 1, wherein, The second box shell includes a second box shell body, a second box shell internal reinforcing portion and a second box shell surface layer extending portion, wherein: The second box shell internal reinforcing portion is fixedly connected to the right end of the second box shell body; The second box shell surface layer extending portion is located above the second box shell internal reinforcing portion, and extends obliquely to the right from the connection position between the second box shell internal reinforcing portion and the second box shell body; The length of the second box shell internal reinforcing portion is longer than the length of the second box shell surface layer extending portion.

8. The midframe and assembly structure of an injection-molded luggage case according to claim 7, characterized in that, The second box shell further includes a second box shell clamping strip and a second box shell fastener, wherein: The second box shell clamping strip is in an L-shaped structure, the vertical portion of the second box shell clamping strip abuts against the right end of the second box shell internal reinforcing portion, the horizontal portion of the second box shell clamping strip abuts against the lower surface of the second box shell internal reinforcing portion, and the second box shell clamping strip and the second box shell internal reinforcing portion are fixedly connected through the second box shell fastener; The left end of the horizontal portion of the second box shell clamping strip is inclined downward.

9. The midframe and assembly structure of an injection-molded luggage case according to claim 7, wherein, The second box shell further includes a second box shell clamping portion, and the second box shell clamping portion is located below the right side of the second box shell internal reinforcing portion and gradually inclines downward from right to left.

10. The midframe and assembly structure of an injection-molded luggage case according to claim 7, wherein, The second frame includes a second frame left side extending portion, a second frame internal lining steel wire mounting groove, a second frame internal lining zipper mounting groove, a second frame right side supporting rib, a second frame zipper mounting groove, a second frame top abutting portion, a second frame clamping assembly groove and a second frame reverse clamping portion, wherein: The second frame left side extending portion is arranged on the left side of the second frame, and is in a right-high and left-low state, and is used for guiding the second box shell; The second frame internal lining zipper mounting groove is arranged on the left side of the middle part of the second frame, and the opening of the second frame internal lining zipper mounting groove faces downward, and is used for accommodating the internal lining. The second frame inner lining steel wire mounting groove is arranged in the middle of the second frame, and its opening faces downward, used for accommodating the inner lining fixing steel wire, and then the inner lining fixing part wrapped around the periphery of the inner lining fixing steel wire is connected with the second frame; The second frame right side supporting rib is arranged on the right side of the second frame, used for supporting the first frame zipper and the second frame zipper together, and making the opposite surfaces of the first frame and the second frame abut against each other in the closed state of the first frame zipper and the second frame zipper; The second frame zipper mounting groove is arranged on the top of the second frame, and its opening faces the right side, used for accommodating the inner side of the second frame zipper; The second frame top abutting part is horizontally arranged on the top of the second frame, and located on the left side of the second frame zipper mounting groove; The second frame clamping assembly groove is arranged in the middle of the second frame, and its opening faces the left side, used for clamping the second box shell; The second frame reverse buckle part is vertically arranged on the left opening of the second frame clamping assembly groove, used for clamping the second box shell.

11. The midframe and assembly structure of an injection-molded luggage case according to claim 10, wherein, The second frame top abutting part includes a second frame top abutting part outer abutting part and a second frame top abutting part outward extending part, when the second box shell is buckled with the second frame: The left end of the second frame top abutting part outer abutting part abuts against the right end of the second box shell surface layer extending part; The upper surface of the second frame top abutting part outward extending part abuts against the lower surface of the second box shell surface layer extending part.

Images