Portable draw-bar box

Abstract

The utility model relates to the technical field of draw-bar boxes, and discloses a portable draw-bar box which comprises a lower box body, a connecting sleeve is fixedly connected to the top wall of the lower box body, an upper box body is connected to the inner wall of the connecting sleeve in a sliding mode, moving grooves are formed in the middle of the front wall and the middle of the rear wall of the connecting sleeve, and threaded rods are rotationally connected to the ends, away from each other, of two moving blocks. The close ends of the two threaded rods penetrate into the moving blocks and are in threaded connection with moving plates, the two sides of the close walls of the two moving plates are fixedly connected with positioning rods, and the ends, away from the moving plates, of the multiple positioning rods penetrate through the moving blocks and are clamped in the positioning holes. According to the box, under the combined action of the threaded rod, the movable plate, the positioning rod, the positioning hole, the movable block, the upper box body, the lower box body and the connecting sleeve, the upper box body can be pulled to move up and down, and then the size and the space of the box body can be flexibly adjusted according to the number of objects contained in the box body.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley cases, in particular to a portable trolley case. Background Art

[0002] A trolley case is a common type of travel luggage. It is usually equipped with a retractable handle and wheels, allowing users to easily push, pull, or drag it while traveling. Its design takes into account convenience, durability, and capacity to meet different travel needs.

[0003] However, although the common trolley cases currently have different specifications to meet people's different usage needs, the size of each specification of trolley case is fixed, and people usually only choose to carry one type of trolley case when traveling. For example, some people usually buy larger trolley cases in order to be able to carry more items when traveling, but when the larger trolley case is not fully loaded with items, its larger size makes the trolley case more inconvenient to carry, and some people choose smaller trolley cases for convenience. However, the applicability of small trolley cases is poor, and they cannot meet the usage needs when encountering the need to carry more items. Therefore, there is a need for a trolley case with adjustable size specifications, which can adjust the box body of the trolley case to the smallest size while meeting the need to fully load the items to be carried, so as to ensure the portability and applicability of the trolley case. Utility Model Content

[0004] In order to remedy the above deficiencies, the present invention provides a portable trolley case, which aims to improve the problem in the prior art that the size of the trolley case cannot be adjusted.

[0005] The two lever arrangement comprises a bottom portion for sliding the latch into position, the bottom portion being adapted to move the latching member to a position where the lever is moved along the bottom edge of the support frame, the second limit stop being able to move relative to the top of the support frame when the lever is moved along the bottom edge.

[0006] Optionally, the shielding assembly includes two chambers, both of which are opened in the lower and middle sides of the front and rear parts of the upper box body, springs are fixedly connected on both sides of the top walls of the two chambers, and the bottom ends of the springs on the front and rear sides are fixedly connected to sliding bars, and the bottom walls of the two sliding bars are fixedly connected to shielding plates, and the bottom walls of the two shielding plates pass through the bottom wall of the upper box body and abut against the bottom wall of the movable groove.

[0007] Optionally, both of the two movable plates are rectangular plates, and both of the two movable plates are slidably connected to the inner wall of the movable block.

[0008] Optionally, telescopic rods are slidably connected to both sides of the middle front portion of the upper box body, and the top ends of the two telescopic rods pass through the top wall of the upper box body and are fixedly connected to handles.

[0009] Optionally, the front and rear sides of the side walls of the lower box body and the upper box body are fixedly connected with support blocks.

[0010] Optionally, both sides of the top walls of the two chambers are fixedly connected to limit rods, the bottom ends of the multiple limit rods pass through the slide bar and are fixedly connected to the bottom wall of the chamber, and the multiple springs are arranged on the periphery of the limit rods.

[0011] The utility model has the following beneficial effects:

[0012] 1. In the present invention, the upper box body can be pulled up and down by the joint action of the threaded rod, the movable plate, the positioning rod, the positioning hole, the movable block, the upper box body, the lower box body and the connecting sleeve, thereby flexibly adjusting the size and space of the box body according to the number of objects contained in the box body;

[0013] 2. In the present invention, the connected shielding plate can be pushed downward by the action of the spring and continuously abut against the inner wall of the movable groove, so that the movable groove can be closed to ensure that the movable groove is closed when the overall size of the box is adjusted, thereby preventing items in the box from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of the portable trolley case proposed in the present invention;

[0015] Figure 2 This is a rear structural diagram of the portable trolley case proposed in the present invention;

[0016] Figure 3 This is a schematic diagram of the internal structure of the moving block in the portable trolley case proposed by the present invention;

[0017] Figure 4 This is a schematic diagram of the connection structure of the shielding plate in the portable trolley case proposed by the present invention.

[0018] Legend:

[0019] 1. Lower box; 2. Upper box; 3. Connecting sleeve; 4. Telescopic rod; 5. Moving slot; 6. Support block; 7. Positioning hole; 8. Moving block; 9. Threaded rod; 10. Handle; 11. Positioning rod; 12. Moving plate; 13. Shielding plate; 14. Limit rod; 15. Spring; 16. Chamber; 17. Slide bar. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Reference Figures 1-4 The utility model provides an embodiment of a portable trolley case, comprising a lower box body 1, a universal wheel for movement is provided on the lower side of the lower box body 1, a connecting sleeve 3 is fixedly connected to the top wall of the lower box body 1, the lower thickness of the connecting sleeve 3 is greater than the upper part of the connecting sleeve 3, the inner wall of the connecting sleeve 3 is slidably connected to the upper box body 2, and telescopic rods 4 are slidably connected to both sides of the front middle of the upper box body 2, and the tops of the two telescopic rods 4 pass through the top wall of the upper box body 2 and are fixedly connected to the handle 10, the front and rear sides of the side walls of the lower box body 1 and the upper box body 2 are fixedly connected to the support blocks 6, the middle of the front and rear walls of the connecting sleeve 3 are opened, and the two moving grooves 5 are penetrated to the inner wall of the connecting sleeve 3, and the middle and lower parts of the front and rear walls of the upper box body 2 are fixedly connected It is connected to a moving block 8, and the two moving blocks 8 are both T-shaped blocks. The ends away from each other of the two moving blocks 8 pass through the moving groove 5. The ends away from each other of the two moving blocks 8 are rotatably connected with threaded rods 9. The close ends of the two threaded rods 9 pass through the moving block 8 and are threadedly connected with a moving plate 12. The two moving plates 12 are both rectangular plates. The two moving plates 12 are slidably connected to the inner wall of the moving block 8. The two moving plates 12 are fixedly connected with positioning rods 11 on both sides of the close wall. Evenly distributed positioning holes 7 are opened on both sides of the middle part of the front and rear walls of the connecting sleeve 3. The positioning holes 7 are all linearly evenly distributed from top to bottom. Multiple positioning rods 11 pass through the moving block 8 at one end away from the moving plate 12 and are engaged in the positioning holes 7.

[0022] By rotating the threaded rod 9, the movable plate 12 connected to the outer periphery can be driven to move. Since the movable plate 12 is rectangular and slides in the movable block 8, the movable plate 12 can be limited by the movable block 8, so that the movable plate 12 cannot rotate. Therefore, when the threaded rod 9 rotates, the movable plate 12 can be driven to move along the threaded rod 9. When the movable plate 12 moves, it can drive the connected positioning rod 11 to move.

[0023] When the user moves the box, the telescopic rod 4 and the handle 10 can be used to pull the box body 2 up and down, and the user can put the box body 2 on the ground to ensure the stability of the box.

[0024] Reference Figures 1-4 , the shielding component is arranged in the upper box body 2, and the shielding component is used to close the moving groove 5 to prevent objects in the box from falling. The shielding component includes two chambers 16, and the two chambers 16 are opened on the middle and lower sides of the front and rear parts of the upper box body 2. Both sides of the top wall of the two chambers 16 are fixedly connected with springs 15, and the bottom ends of the front and rear springs 15 are fixedly connected with slides 17. Both sides of the top wall of the two chambers 16 are fixedly connected with limit rods 14, and the bottom ends of multiple limit rods 14 pass through the slides 17 and are fixedly connected to the bottom wall of the chamber 16. Multiple springs 15 are arranged on the outer periphery of the limit rods 14, and the bottom walls of the two slides 17 are fixedly connected with a shielding plate 13. The length of the shielding plate 13 is longer than the length of the moving groove 5, and the width of the shielding plate 13 is less than the width of the slide 17. The bottom walls of the two shielding plates 13 pass through the bottom wall of the upper box body 2 and abut against the inner bottom wall of the moving groove 5. In actual use, (1) the bottom wall of the shielding plate 13 is provided with an abutting portion (not shown in the figure) that abuts against the inner bottom wall of the movable groove 5; (2) the shielding component can also be selected from a telescopic plate or a shielding cloth (leaving a telescopic margin between the upper and lower boxes) arranged on the inner wall of the upper box body 2, and the two ends of the telescopic plate are respectively connected to the upper box body and the lower box body, and are arranged corresponding to the movable groove 5, and the size specifications are adapted.

[0025] By providing a shielding plate 13 in the chamber 16 inside the upper box body 2, the movable groove 5 can be closed by the shielding plate 13. Moreover, since the top wall of the shielding plate 13 extends into the chamber 16 and is fixed with a slide bar 17, and the top wall of the slide bar 17 is connected to the top wall of the chamber 16 by a spring 15, the spring 15 can always push the slide bar 17 to drive the shielding plate 13 downward and make the bottom wall of the shielding plate 13 continuously contact the inner wall of the movable groove 5. Moreover, under the action of the limit rod 14, the stability of the slide bar 17 and the shielding plate 13 during movement is guaranteed and the spring 15 is prevented from bending when under pressure. Therefore, no matter when the upper box body 2 moves to any height in the connecting sleeve 3, the shielding plate 13 can be guaranteed to close the movable groove 5, thereby preventing the items in the box from falling out of the movable groove 5 and ensuring the normal use of the trolley case. The spring 15 is in a compressed state.

[0026] Working principle: During actual use, the threaded rod 9 is rotated to drive the movable plate 12 connected to the periphery and the positioning rod 11 fixed on the movable plate 12 to move. When the positioning rod 11 is pulled out of the positioning hole 7, the limit on the movable block 8 can be cancelled, thereby canceling the limit on the upper box body 2. Then the staff can pull the upper box body 2 up and down, and then can flexibly adjust the size and space of the box body according to the number of objects loaded in the box body. When it is adjusted to the appropriate size, the positioning rod 11 is inserted into the positioning hole 7 for fixation.

[0027] In addition, when adjusting the position of the upper box body 2, the connected baffle 13 can be pushed downward under the action of the spring 15 and continue to abut against the inner wall of the movable groove 5, so that the movable groove 5 can be closed to ensure that the movable groove 5 is closed when the overall size of the box body is adjusted, thereby preventing items in the box body from falling.

[0028] In actual use, the connecting sleeve 3 is also composed of two connecting sleeve plates that are hingedly connected. This is not an improvement of the present invention and will not be described in detail here.

[0029] It should be noted that the technical problem to be solved by the technical solution of the present utility model is how to adjust the size and space of the entire box.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable trolley case, comprising a lower case (1), characterized in that: The top wall of the lower box body (1) is fixedly connected with a connecting sleeve (3), and the inner wall of the connecting sleeve (3) is slidably connected with the upper box body (2). The middle parts of the front and rear walls of the connecting sleeve (3) are provided with moving grooves (5), and the two moving grooves (5) are penetrated to the inner wall of the connecting sleeve (3). The middle and lower parts of the front and rear walls of the upper box body (2) are fixedly connected with moving blocks (8), and the two ends of the moving blocks (8) are penetrated by the moving grooves (5). The two ends of the moving blocks (8) are rotatably connected with threaded rods (9), and the two ends of the threaded rods (9) are penetrated into the moving block (8) and are threadedly connected to the moving plate (12). The two sides of the moving plates (12) are fixedly connected with positioning rods (11) on the adjacent walls. The middle parts of the front and rear walls of the connecting sleeve (3) are provided with evenly distributed positioning holes (7), and the ends of the multiple positioning rods (11) away from the moving plate (12) are penetrated by the moving block (8) and are engaged in the positioning holes (7). A shielding component is provided in the upper box body (2), and is used to close the movable groove (5) to prevent objects in the box from falling.

2. The portable suitcase according to claim 1, characterized in that: The shielding assembly includes two chambers (16), both of which are opened in the middle and lower sides of the front and rear parts of the upper box body (2), and springs (15) are fixedly connected on both sides of the top walls of the two chambers (16), and the bottom ends of the springs (15) on the front and rear sides are fixedly connected to slide bars (17), and the bottom walls of the two slide bars (17) are fixedly connected to shielding plates (13), and the bottom walls of the two shielding plates (13) pass through the bottom wall of the upper box body (2) and abut against the bottom wall of the movable groove (5).

3. The portable suitcase according to claim 1, characterized in that: The two movable plates (12) are both rectangular plates, and the two movable plates (12) are both slidably connected to the inner wall of the movable block (8).

4. The portable suitcase according to claim 1, characterized in that: Telescopic rods (4) are slidably connected to both sides of the middle portion of the front portion of the upper box body (2), and the top ends of the two telescopic rods (4) pass through the top wall of the upper box body (2) and are fixedly connected to handles (10).

5. The portable suitcase according to claim 1, characterized in that: Support blocks (6) are fixedly connected to the front and rear sides of the side walls of the lower box body (1) and the upper box body (2).

6. The portable suitcase according to claim 2, characterized in that: The two sides of the inner top wall of the two chambers (16) are fixedly connected to the limiting rods (14), the bottom ends of the plurality of limiting rods (14) pass through the slide bar (17) and are fixedly connected to the inner bottom wall of the chamber (16), and the plurality of springs (15) are arranged on the outer periphery of the limiting rods (14).

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