Wide trolley structure for suitcases

Abstract

The utility model discloses a wide pull rod structure of luggage, through the unique cross section modeling, can naturally adapt to various different style box, still can realize the remarkable promotion of space utilization in various box. The wide pull rod structure of luggage includes box, upper crossbeam, fixed pipe, movable pipe and handrail, the upper crossbeam is installed on the box, the both ends of fixed pipe are fixed in the end portion of upper crossbeam and the inside of box, and are located in the corner position in the inside of box, the cross section of fixed pipe is designed as the geometric profile of bionic leaf shape, including two sides, two smooth transition arc curved surfaces with different R angle, the movable pipe telescopic cooperation is in fixed pipe, and its end portion is fixedly connected with the end portion of handrail.

Description

Technical Field

[0001] This utility model belongs to the field of travel luggage technology, and specifically refers to a wide pull rod structure for a suitcase. Background Technology

[0002] Existing luggage handles typically use simple, centrally symmetrical cross-sections such as circles, squares, or ellipses. These traditional handle designs suffer from two main drawbacks: (1) A single tube type is difficult to adapt to different design languages ​​(such as hard style and rounded style) of the cabinet, which leads to manufacturers needing to develop exclusive pull rod molds for different series of cabinets, thereby increasing development costs, management complexity and production costs.

[0003] (2) The shape of the tubular cross section limits the layout optimization. After installation, there is a large gap between the tubular cross section and the inner wall of the box, resulting in a waste of the internal space of the box. Utility Model Content

[0004] The main purpose of this utility model is to provide a wide pull rod structure for suitcases, which solves the problems existing in the prior art. Through its unique cross-sectional shape, it can naturally adapt to a variety of different styles of suitcases and can also significantly improve the space utilization rate in various types of suitcases.

[0005] To achieve the above objectives, the solution of this utility model is: A wide pull rod structure for a suitcase includes a suitcase body, an upper crossbeam, a fixed tube, a movable tube, and a handle. The upper crossbeam is mounted on the suitcase body. The two ends of the fixed tube are respectively fixed to the ends of the upper crossbeam and the interior of the suitcase body, and are located at a corner position inside the suitcase body. The cross-section of the fixed tube is designed with a biomimetic leaf-shaped geometric profile, including two smoothly transitioning arc-shaped surfaces with different radius angles on both sides. The movable tube telescopically fits inside the fixed tube, and its end is fixedly connected to the end of the handle.

[0006] The wide pull rod structure of the suitcase also includes a lower crossbeam; the lower crossbeam is installed inside the suitcase body and is parallel to the upper crossbeam; the lower end of the fixing tube is fixed to the end of the lower crossbeam.

[0007] The curved surfaces on both sides of the fixed tube are the first curved surface and the second curved surface, respectively. The radius (R) of the first curved surface is set to R10mm~R25mm, and the radius (R) of the second curved surface is set to R30mm~R50mm.

[0008] Preferably, a plane is provided between one end of the first curved surface and the adjacent end of the second curved surface to achieve a transition.

[0009] The upper crossbeam is fixed to the upper step on the outside of the box body.

[0010] The upper crossbeam is provided with through holes for installing the fixing tube, and the cross-sectional shape of the through holes matches the outer contour of the fixing tube.

[0011] Preferably, the upper crossbeam includes an upper crossbeam body and a detachable module detachably mounted on the end face of the upper crossbeam body, wherein the detachable module is provided with the through hole.

[0012] Preferably, the detachable module is provided with a plug-in block that engages with the end face of the upper crossbeam body. A pin is inserted from the side of the upper crossbeam body and passes through both the upper crossbeam body and the plug-in block to achieve relative fixation between the upper crossbeam body and the plug-in block.

[0013] The lower surface of the box body has notches on both sides for mounting the wheels of the suitcase; the upper surface of the upper crossbeam has grooves for serving as handle positions.

[0014] After adopting the above technical solution, the present invention has the following technical effects: This invention optimizes the geometric contour design of the fixing tube, giving it two arc-shaped curved surfaces with different radius angles on both sides. By rotating the fixing tube 180°, the different arc-shaped curved surfaces can face outwards. In addition, the fixing tube is set at the corner of the box, so that the outward-facing arc-shaped curved surface of the fixing tube can match the corner contour of the box's exterior. Ultimately, this allows a fixing tube to be adapted to different styles of boxes and significantly improves the space utilization rate in various types of boxes. Attached Figure Description

[0015] Figure 1 The three-dimensional representation of the first embodiment of this utility model Figure 1 (Normal state).

[0016] Figure 2 The three-dimensional representation of the first embodiment of this utility model Figure 2 (Pull out state).

[0017] Figure 3 The three-dimensional representation of the first embodiment of this utility model Figure 3 (Normal state).

[0018] Figure 4 This is a schematic diagram of the cross-section of the fixed tube according to the first embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of the upper crossbeam structure of the first embodiment of this utility model.

[0020] Figure 6 This is an exploded view of the upper crossbeam of the first embodiment of this utility model.

[0021] Figure 7 This is a perspective view of the second embodiment of the present utility model.

[0022] Figure 8 This is a schematic diagram of the strength simulation of an existing wide tie rod tube.

[0023] Figure 9 This is a schematic diagram of the strength simulation of this utility model.

[0024] Explanation of icon numbers: 100 - Box body; 101 - Step; 102 - Notch; 200 - Upper crossbeam; 201 - Perforation; 202 - Upper crossbeam body; 203 - Detachable module; 204 - Connector block; 205 - Pin; 206 - Groove; 300 - Lower crossbeam; 400 - Fixed tube; 401 - First curved surface; 402 - Second curved surface; 403 - Plane; 500-Active Tube; 600-Handrail. Detailed Implementation

[0025] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0026] refer to Figures 1 to 7 As shown, this utility model discloses a wide pull rod structure for a suitcase, including a suitcase body 100, an upper crossbeam 200, a fixed tube 400, a movable tube 500, and a handle 600; The upper crossbeam 200 is installed on the box body 100; The two ends of the fixed tube 400 are respectively fixed to the end of the upper crossbeam 200 and the inside of the box 100, and are located at the corner position inside the box 100; the cross section of the fixed tube 400 is designed as a biomimetic leaf-shaped geometric profile, including two smoothly transitioning arc surfaces with different R angles on both sides. The movable tube 500 is telescopically fitted inside the fixed tube 400, and its end is fixedly connected to the end of the handrail 600.

[0027] Through the above solution, this utility model optimizes the geometric contour design of the fixing tube 400, giving it two arc-shaped curved surfaces with different radius angles on both sides. Rotating the fixing tube 400 by 180° allows these different arc-shaped curved surfaces to face outwards. Furthermore, since the fixing tube 400 is positioned at a corner within the housing 100, the outward-facing arc-shaped curved surfaces of the fixing tube 400 can match the corner contours of the housing 100's exterior. Ultimately, this allows a single fixing tube 400 to be adapted to housings 100 of different styles, significantly improving space utilization in various housing types. Specifically, this utility model has the following advantages: (1) High versatility and low cost: It can perfectly match the "rugged style" through a single tube cross-section design (see Figure 1 ) and "rounded style" (see Figure 7 The different series of box 100 significantly reduced the number of molds to be developed, and lowered production costs and supply chain management complexity.

[0028] (2) Maximize space utilization: Thanks to the optimized design of the "leaf-shaped" outline, no matter what angle the tube is assembled at on the box of any style, its outer outline can maintain the maximum parallelism and closeness with the inner wall of the box; this "extreme edge-fitting" layout minimizes the occupation of the internal space of the box by the pull rod system (fixed tube 400 + movable tube 500), thereby effectively improving the usable volume of the box.

[0029] (3) Visual harmony and unity: When the tube is assembled with the straight section of its outline parallel to the box, its linear features can echo the straight line design language of the hard-style box, presenting a solid and neat visual effect; when the tube is rotated around the axis by a certain angle before assembly, its exposed outline edge is transformed into a soft curve, which can be naturally integrated into the curved surface design of the rounded style box without any visual abruptness.

[0030] (4) Structural strength optimization: comparison Figure 8 and Figure 9 Compared to traditional circular or square cross-sections, the "leaf-shaped" cross-section of this invention provides better bending strength in a specific direction (approximately 26% stronger), which helps to improve the overall durability of the tie rod system.

[0031] See Figures 1 to 6 The first embodiment of this utility model is shown.

[0032] The suitcase shown in the first embodiment has a more "rugged" style, so the second curved surface 402 of the fixing tube 400 faces outward.

[0033] The first embodiment also includes a lower crossbeam 300; the lower crossbeam 300 is installed inside the housing 100 and is parallel to the upper crossbeam 200; the lower end of the fixing tube 400 is fixed to the end of the lower crossbeam 300.

[0034] The curved surfaces on both sides of the aforementioned fixed tube 400 are the first curved surface 401 and the second curved surface 402, respectively. The radius (R) of the first curved surface 401 is set to R10mm~R25mm, and the radius (R) of the second curved surface 402 is set to R30mm~R50mm. The former is relatively rounded, while the latter is relatively flat, to meet the needs of different styles.

[0035] Furthermore, a plane 403 is provided between one end of the first curved surface 401 and the adjacent end of the second curved surface 402 to achieve a transition. This makes the overall cross-sectional shape of the fixed tube 400 more harmonious. Specifically, the joints between the surfaces are rounded for a smooth transition.

[0036] The upper crossbeam 200 is fixed to the upper step 101 on the outside of the box 100 by welding, riveting or screwing; the lower crossbeam 300 is fixed to the lower part of the inside of the box 100 by welding, riveting or screwing.

[0037] The aforementioned upper crossbeam 200 is provided with a through hole 201 for installing the fixing tube 400, and the cross-sectional shape of the through hole 201 matches the outer contour of the fixing tube 400. After the fixing tube 400 passes through and is installed, the shaking of the fixing tube 400 can be avoided to the greatest extent.

[0038] Generally, because the two sides of the fixing tube 400 have different shapes, when the fixing tube 400 is used in a different direction, the upper crossbeam 200 needs to have through holes 2010 with different directions. That is, the upper crossbeam 200 needs to be produced in at least two specifications to match the different installation methods of the fixing tube 400. To solve this problem, this utility model further modularizes the upper crossbeam 200. The upper crossbeam 200 includes a detachably connected upper crossbeam body 202 and a detachable module 203. The specific implementation is as follows: See Figure 5 , Figure 6 The aforementioned upper crossbeam 200 includes an upper crossbeam body 202 and a detachable module 203 detachably mounted on the end face of the upper crossbeam body 202. The detachable module 203 is provided with the aforementioned through hole 201. Therefore, it is only necessary to produce detachable modules 203 with through holes 201 in different directions for selection, which can save some costs.

[0039] Furthermore, the aforementioned detachable module 203 is provided with a plug-in block 204 that engages with the end face of the upper crossbeam body 202. A pin 205 is used to pass through the side of the upper crossbeam body 202 and simultaneously through the upper crossbeam body 202 and the plug-in block 204 to achieve relative fixation between the upper crossbeam body 202 and the plug-in block 204.

[0040] The lower surface of the aforementioned box 100 has notches 102 on both sides for mounting the wheels of the suitcase.

[0041] The upper surface of the aforementioned upper crossbeam 200 is provided with a groove 206. The groove 206 can serve as a handle, allowing users to directly grasp the armrest 600 and pull it upwards.

[0042] See Figure 7 The second embodiment of this utility model is shown.

[0043] The suitcase shown in the second embodiment has a more "soft" style, so the first curved surface 401 of the fixing tube 400 faces outward.

[0044] Apart from the shape of the housing 100 and the orientation of the fixing tube 400, the rest of the design of the second embodiment is basically the same as that of the first embodiment, or adopts a similar structure.

[0045] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A wide pull rod structure for a suitcase, characterized in that: Includes the box body, upper crossbeam, fixed tubes, movable tubes, and handrails; The upper crossbeam is installed on the box body; The two ends of the fixed tube are respectively fixed to the end of the upper crossbeam and the inside of the box, and are located at the corner position inside the box; the cross section of the fixed tube is designed as a biomimetic leaf-shaped geometric profile, including two smoothly transitioning arc surfaces with different R angles on both sides. The movable tube is telescopically fitted inside the fixed tube, and its end is fixedly connected to the end of the handrail.

2. The wide pull rod structure of the suitcase as described in claim 1, characterized in that: It also includes a lower crossbeam; the lower crossbeam is installed inside the box and is parallel to the upper crossbeam; the lower end of the fixing tube is fixed to the end of the lower crossbeam.

3. The wide pull rod structure of the suitcase as described in claim 1, characterized in that: The curved surfaces on both sides of the fixed tube are the first curved surface and the second curved surface, respectively. The radius (R) of the first curved surface is set to R10mm~R25mm, and the radius (R) of the second curved surface is set to R30mm~R50mm.

4. The wide pull rod structure of the suitcase as described in claim 3, characterized in that: A plane is provided between one end of the first curved surface and the adjacent end of the second curved surface to achieve a transition.

5. The wide pull rod structure of the suitcase as described in claim 1, characterized in that: The upper crossbeam is fixed to the upper step on the outside of the box body.

6. The wide pull rod structure of the suitcase as described in claim 1, characterized in that: The upper crossbeam is provided with through holes for installing the fixing tube, and the cross-sectional shape of the through holes matches the outer contour of the fixing tube.

7. The wide pull rod structure of the suitcase as described in claim 6, characterized in that: The upper crossbeam includes an upper crossbeam body and a detachable module detachably mounted on the end face of the upper crossbeam body, wherein the detachable module is provided with the through hole.

8. The wide pull rod structure of the suitcase as described in claim 7, characterized in that: The detachable module is provided with a plug-in block that engages with the end face of the upper crossbeam body. A pin is inserted from the side of the upper crossbeam body and passes through both the upper crossbeam body and the plug-in block to achieve relative fixation between the upper crossbeam body and the plug-in block.

9. The wide pull rod structure of the suitcase as described in claim 1, characterized in that: The lower surface of the box body has notches on both sides for mounting the wheels of the suitcase; the upper surface of the upper crossbeam has grooves for serving as handle positions.

Images