Hollow plate draw-bar box

Abstract

The utility model belongs to the technical field of draw -bar box, especially hollow plate draw -bar box, including the platen, the top of platen is equipped with the box, and the right side of box is open setting. The utility model of rotating knob will drive the rotation of rotating rod through the positive direction, and the rotating rod drives the rotation of second gear through third gear, and then makes the transmission rod rotate, and the rotation of transmission rod will drive the rotation of screw through the meshing transmission of second gear and first gear, and the clamping pin will move along the axial direction of screw, in the initial state, the clamping pin is clamped with the clamping groove on the inner wall of both sides of box, and the extension box is at the fixed position, when the clamping pin moves due to the rotation of screw, the clamping pin will separate from the current clamping groove and move to the storage cavity, and the extension box can slide outward along the sliding groove, when the one side of sliding block contacts with the inner wall of one side of sliding groove, the clamping pin is clamped with another clamping groove in reverse rotation knob, and the extension box is fixed, realizes the extension of draw -bar box space, and effectively increases the containing space of draw -bar box.

Description

Technical Field

[0001] This utility model relates to the field of trolley case technology, specifically a hollow board trolley case. Background Technology

[0002] As an essential tool for luggage storage and transportation in modern travel, rolling suitcases play a vital role in people's daily lives, business trips, and vacations.

[0003] Most hollow board suitcases on the market currently use a fixed structure design, meaning the internal space is determined after manufacturing and cannot be flexibly adjusted to meet actual needs. During travel, consumers often find themselves with more luggage than expected, such as purchasing souvenirs or unexpectedly adding documents during business trips. In these situations, the fixed-space hollow board suitcase cannot meet the increased storage needs, causing significant inconvenience. Therefore, we propose the hollow board suitcase to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a hollow board trolley case, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A hollow board trolley case includes a tray, a case body on the top of the tray, an opening on the right side of the case body, two sliding grooves on each of the inner walls of both sides of the case body, and sliders slidably connected to the sliding grooves. An expansion box with an opening on the left side is fixedly connected between four sliders. The expansion box has two storage cavities and an empty cavity. A lead screw is rotatably connected to the inner wall of one side of each storage cavity, and a locking pin is threaded onto the lead screw. Two locking slots are provided on each of the inner walls of both sides of the case body, and the locking pin engages with one of the corresponding two locking slots. The lead screw is fixedly connected to... A first gear is fixedly connected to the cavity. Two transmission rods are rotatably connected to one inner wall of the cavity. Both ends of the transmission rods are fixedly connected to second gears. The ends of the transmission rods extend into the corresponding storage cavities. Two of the four second gears mesh with the corresponding first gears. A rotating rod is rotatably connected between the two inner walls of the cavity. Two third gears are fixedly connected to the rotating rod. The other two of the four second gears mesh with the corresponding third gears. The ends of the rotating rod extend outside the expansion box and are fixedly connected to a knob.

[0009] Furthermore, one side of the expansion box is provided with multiple locking grooves in a ring shape, and the knob is provided with a T-shaped rod, which is engaged with one of the multiple locking grooves.

[0010] Furthermore, a tension spring is fixedly connected between the inner wall of one side of the T-shaped rod and the knob, and the tension spring is movably sleeved on the T-shaped rod.

[0011] Furthermore, two guide rods are welded between the inner walls of the two sides of the storage cavity, and guide blocks are slidably connected to the guide rods. The guide blocks are fixedly connected to the corresponding locking pins.

[0012] Furthermore, the pallet is provided with a pull rod, and a U-shaped connector is fitted on the pull rod. One side of the U-shaped connector extends into the box and is fixedly connected to a baffle. Two movable wheels are rotatably connected to the bottom of the pallet.

[0013] Furthermore, a guide hole is provided on the inner wall of the other side of the storage cavity, and the outer side of the locking pin is slidably connected to the inner wall of the corresponding guide hole.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a hollow board trolley case, which has the following advantages:

[0016] This invention utilizes a rotary knob that rotates in the forward direction to drive a rotating rod. The rotating rod, via a third gear, drives a meshing second gear, which in turn rotates a transmission rod. This rotation, through the meshing of the second and first gears, drives a lead screw. As the lead screw rotates, the locking pin, constrained by the guide rod and guide block, moves axially along the lead screw. Initially, the locking pin engages with slots on the inner walls of both sides of the case, placing the expansion case in a fixed position. When the lead screw rotates and the locking pin moves, it disengages from its current slot and moves into the storage cavity, moving the expansion case. The expansion case slides outward along the sliding groove under the sliding engagement of the slider and the groove. When one side of the slider contacts the inner wall of one side of the groove, rotating the knob in the reverse direction engages the locking pin with another slot, fixing the expansion case in place. This expands the space of the trolley case, effectively increasing its carrying capacity. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the other side of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the expansion box of this utility model after it has been concealed.

[0020] Figure 4 This is a three-dimensional structural diagram of the expansion box of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the expansion box of this utility model after it has been cut open;

[0022] Figure 6 This is a partial three-dimensional structural diagram of the present invention;

[0023] Figure 7 This is a three-dimensional structural diagram of the connection between the rotating rod, knob, T-shaped rod, and tension spring of this utility model.

[0024] In the diagram: 1. Tray; 2. Box body; 3. Slide groove; 4. Slider; 5. Expansion box; 6. Slot; 7. Storage cavity; 8. Cavity; 9. Lead screw; 10. Locking pin; 11. First gear; 12. Transmission rod; 13. Second gear; 14. Rotating rod; 15. Third gear; 16. Knob; 17. Locking groove; 18. T-shaped rod; 19. Tension spring; 20. Guide rod; 21. Guide block; 22. Pull rod; 23. U-shaped connector; 24. Baffle; 25. Moving wheel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] like Figure 1-7As shown, an embodiment of the present invention provides a hollow board trolley case, including a tray 1, a case body 2 on the top of the tray 1, an opening on the right side of the case body 2, two sliding grooves 3 on each of the inner walls of both sides of the case body 2, sliders 4 slidably connected to the sliding grooves 3, and an expansion box 5 with an opening on the left side fixedly connected between the four sliders 4. The expansion box 5 has two storage cavities 7 and a cavity 8. A lead screw 9 is rotatably connected to one inner wall of one side of the storage cavity 7, and a locking pin 10 is threaded onto the lead screw 9. Two locking slots 6 are provided on each inner wall of both sides of the case body 2, and the locking pin 10 engages with one of the corresponding two locking slots 6. The lead screw 9 is fixed with... A first gear 11 is connected to the cavity 8. Two transmission rods 12 are rotatably connected to one side of the inner wall of the cavity 8. Two second gears 13 are fixedly connected to both ends of the transmission rods 12. The ends of the transmission rods 12 extend into the corresponding storage cavities 7. Two of the four second gears 13 mesh with the corresponding first gears 11. A rotating rod 14 is rotatably connected between the two sides of the inner wall of the cavity 8. Two third gears 15 are fixedly connected to the rotating rod 14. The other two of the four second gears 13 mesh with the corresponding third gears 15. The ends of the rotating rod 14 extend outside the expansion box 5 and are fixedly connected to a knob 16.

[0028] In use, unlocking knob 16, rotating knob 16 clockwise will cause rotating rod 14 to rotate as well. Rotating rod 14 will cause third gear 15 to rotate as well. When third gear 15 rotates, it will drive second gear 13, which meshes with it, to rotate, thereby causing transmission rod 12 to rotate. The rotation of transmission rod 12 will be transmitted through the meshing of second gear 13 and first gear 11, driving lead screw 9 to rotate. When lead screw 9 rotates, due to the restriction of guide rod 20 and guide block 21, locking pin 10 will move along the axial direction of lead screw 9. In the initial state, locking pin 10... The expansion box 5 is engaged with the slots 6 on both sides of the inner wall of the box 2. At this time, the expansion box 5 is in a fixed position. When the screw 9 rotates and the locking pin 10 moves, the locking pin 10 will disengage from the current slot 6 and move into the storage cavity 7. The expansion box 5 moves and can slide outward along the slide groove 3 under the sliding cooperation of the slider 4 and the slide groove 3. When one side of the slider 4 contacts the inner wall of one side of the slide groove 3, the knob 16 is rotated in the opposite direction to engage the locking pin 10 with another slot 6, fixing the expansion box 5, thereby expanding the space of the trolley case and effectively increasing the carrying capacity of the trolley case.

[0029] In some embodiments, the expansion box 5 has a plurality of locking grooves 17 in a ring shape on one side, and a T-shaped rod 18 is provided on the knob 16. The T-shaped rod 18 is engaged with one of the locking grooves 17. A tension spring 19 is fixedly connected between the inner wall of one side of the T-shaped rod 18 and the knob 16. The tension spring 19 is movably sleeved on the T-shaped rod 18.

[0030] To ensure that the expansion box 5 can be stably fixed after being extended to the required position, when the expansion box 5 is moved to the appropriate position, the locking pin 10 is engaged with the corresponding locking slot 6, and the T-shaped rod 18 is inserted into the locking slot 17 corresponding to the current position. At this time, the T-shaped rod 18 is engaged with the locking slot 17, thereby restricting the rotation of the knob 16 and preventing the expansion box 5 from moving due to accidental rotation of the knob 16, thus ensuring the stability of the expansion box 5.

[0031] In some embodiments, two guide rods 20 are welded between the inner walls of the two sides of the receiving cavity 7, and guide blocks 21 are slidably connected to the guide rods 20. The guide blocks 21 are fixedly connected to the corresponding locking pins 10.

[0032] The guide block 21 limits the locking pin 10.

[0033] In some embodiments, the pallet 1 is provided with a pull rod 22, and a U-shaped connector 23 is sleeved on the pull rod 22. One side of the U-shaped connector 23 extends into the box 2 and is fixedly connected to a baffle 24. Two movable wheels 25 are rotatably connected to the bottom of the pallet 1.

[0034] The bottom of the tray 1 is rotatably connected to two casters 25. Users can easily move the entire suitcase by pulling the lever 22 and using the rolling of the casters 25, which greatly reduces the burden when traveling and improves the convenience of use.

[0035] In some embodiments, a guide hole is provided on the inner wall of the other side of the receiving cavity 7, and the outer side of the locking pin 10 is slidably connected to the inner wall of the corresponding guide hole.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hollow board trolley case, including a tray (1), characterized in that: The top of the tray (1) is provided with a box (2), the right side of the box (2) is open, and two sliding grooves (3) are opened on both sides of the inner wall of the box (2). Sliding blocks (4) are slidably connected to the sliding grooves (3). An expansion box (5) with an opening on the left side is fixedly connected between the four sliding blocks (4). The expansion box (5) has two storage cavities (7) and a cavity (8). A lead screw (9) is rotatably connected to one side of the inner wall of the storage cavity (7). A locking pin (10) is threaded onto the lead screw (9). Two slots (6) are opened on both sides of the inner wall of the box (2). The locking pin (10) engages with one of the corresponding slots (6). A first gear (1) is fixedly connected to the lead screw (9). 1) Two transmission rods (12) are rotatably connected to one inner wall of the cavity (8). Both ends of the transmission rods (12) are fixedly connected to second gears (13). The ends of the transmission rods (12) extend into the corresponding storage cavity (7). Two of the four second gears (13) mesh with the corresponding first gears (11). A rotating rod (14) is rotatably connected between the two inner walls of the cavity (8). Two third gears (15) are fixedly connected to the rotating rod (14). The other two of the four second gears (13) mesh with the corresponding third gears (15). The ends of the rotating rod (14) extend outside the expansion box (5) and are fixedly connected to a knob (16).

2. The hollow board trolley case according to claim 1, characterized in that: The expansion box (5) has multiple locking grooves (17) in a ring shape on one side. The knob (16) is provided with a T-shaped rod (18), which is engaged with one of the locking grooves (17).

3. The hollow board trolley case according to claim 2, characterized in that: A tension spring (19) is fixedly connected between the inner wall of one side of the T-shaped rod (18) and the knob (16), and the tension spring (19) is movably sleeved on the T-shaped rod (18).

4. The hollow board trolley case according to claim 3, characterized in that: Two guide rods (20) are welded between the inner walls of the two sides of the storage cavity (7). A guide block (21) is slidably connected to the guide rod (20), and the guide block (21) is fixedly connected to the corresponding locking pin (10).

5. The hollow board trolley case according to claim 4, characterized in that: The pallet (1) is provided with a pull rod (22), and a U-shaped connector (23) is fitted on the pull rod (22). One side of the U-shaped connector (23) extends into the box (2) and is fixedly connected to a baffle (24). The bottom of the pallet (1) is rotatably connected to two moving wheels (25).

6. The hollow board trolley case according to claim 5, characterized in that: A guide hole is provided on the inner wall of the other side of the storage cavity (7), and the outer side of the locking pin (10) is slidably connected to the inner wall of the corresponding guide hole.

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