Portable draw-bar box with telescopic handle

Abstract

The utility model belongs to the technical field of draw-bar boxes, in particular to a portable draw-bar box with a telescopic handle, which comprises a box body, a box cover is arranged on the left side of the box body, and two sliding chutes are respectively arranged on the inner walls of two sides of the box cover. By pulling the T-shaped bayonet lock, the T-shaped bayonet lock stretches the first spring in the moving process, so that the T-shaped bayonet lock is separated from one of the multiple clamping grooves, then the T-shaped rod is rotated, the T-shaped rod drives the first gear to rotate through the second gear, the first gear drives the lead screw to rotate, and the lead screw drives the moving block to move; the movable block drives the extension box to move, the extension box drives the sliding block to slide on the corresponding sliding groove, after the extension box moves to drive a proper position, force on the T-shaped clamping pin is released, at the moment, the first spring in the stretching state is reset, the first spring drives the T-shaped clamping pin to be clamped with another clamping groove in the multiple clamping grooves, and the adjusted extension box is fixed. Therefore, the storage space can be expanded as required.

Description

Technical Field

[0001] This utility model relates to the field of trolley case technology, specifically a portable trolley case with a telescopic handle. Background Technology

[0002] A rolling suitcase is a type of luggage with a telescopic handle and wheels. It is widely used because of its convenience. The telescopic handle of a rolling suitcase can be divided into single-tube handles and double-tube handles. The tubes of the telescopic handle can also be square or round, making it easy to drag while walking and greatly reducing the burden.

[0003] Chinese patented invention CN217446931U discloses a trolley case with a telescopic handle structure, which solves the problem that existing trolley cases mostly have telescopic handles embedded inside the case for aesthetic reasons and fixed by screws from the inside, making handle replacement cumbersome. The invention includes a case body with casters evenly spaced at the bottom. A mounting groove is formed on one side of the case body, with symmetrical sliding grooves on the inner wall of the mounting groove. A connecting plate is installed in the mounting groove, and a telescopic handle is installed within the connecting plate. A recess is formed on the side of the connecting plate adjacent to the case body, with symmetrical locking slots on the top inner wall of the recess. A slide rail is installed on the top inner wall of the mounting groove. By incorporating components such as the slide rail, locking slots, locking strips, and mounting groove, the telescopic handle can be replaced without tools, making replacement simple and convenient.

[0004] However, the device still has some problems. In actual use, although the pull handle can be replaced, the storage space is fixed and cannot be expanded, making it inflexible in use. This leaves users with no solution when faced with sudden increases in storage needs during their trip. Therefore, we propose a portable pull handle with telescopic handle to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a portable trolley case with a telescopic handle, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A portable trolley case with a telescopic handle includes a case body, a case cover on the left side of the case body, two sliding grooves on the inner walls of both sides of the case cover, sliders slidably connected to the sliding grooves, an extension box with an opening on one side fixedly connected among four sliders, a groove on the inner wall of the top of the case cover, a lead screw rotatably connected between the inner walls of the two sides of the groove, a moving block threaded onto the lead screw, a first gear fixedly connected to the lead screw, a T-shaped rod rotatably connected to the top of the case cover, the end of the T-shaped rod extending into the groove and fixedly connected to a second gear, the second gear meshing with the first gear, a T-shaped pin on the T-shaped rod, multiple slots annularly formed on the top of the case cover, the T-shaped pin engaging with one of the slots, a first spring welded between the bottom inner wall of the T-shaped pin and the top of the T-shaped rod, the first spring being movably sleeved on the T-shaped pin.

[0010] Furthermore, the right side of the housing is provided with an installation groove that is open on one side, and limit grooves are provided on both inner walls of the installation groove.

[0011] Furthermore, a rectangular block is welded to one inner wall of the mounting groove, and positioning rods are welded to both sides of the rectangular block, with locking rods slidably connected to the positioning rods.

[0012] Furthermore, a second spring is fixedly connected between the end of the lever and one side of the rectangular block, and the second spring is movably sleeved on the corresponding positioning rod.

[0013] Furthermore, a mounting plate is fitted onto the limiting groove, and two fixing grooves are formed on the mounting plate, which are engaged with corresponding locking rods.

[0014] Furthermore, the mounting plate is provided with a telescopic pull rod, two limiting posts are welded to the bottom of the mounting plate, and two positioning grooves are opened on the bottom inner wall of the mounting groove, the positioning grooves are engaged with the corresponding limiting posts.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a portable trolley case with a telescopic handle, which has the following advantages:

[0017] This invention utilizes a T-shaped locking pin. As the T-shaped locking pin moves, it stretches the first spring, causing it to separate from one of the multiple locking slots. Then, rotating the T-shaped rod, via the second gear, drives the first gear, which in turn drives the lead screw. The lead screw moves the moving block, which in turn moves the expansion box. The expansion box then moves the slider along the corresponding groove. After moving to the desired position, the force on the T-shaped locking pin is released, causing the first spring, which was in a stretched state, to return to its original position. The first spring then engages the T-shaped locking pin with another of the multiple locking slots, securing the adjusted expansion box and allowing for expansion of storage space as needed. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the mounting plate of this utility model after it has been removed.

[0020] Figure 3 This is a three-dimensional structural diagram of the connection between the box cover and the expansion box of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the connection between the mounting plate and the telescopic tie rod of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the expansion box of this utility model cut open;

[0023] Figure 6 This is a partial three-dimensional structural diagram of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the connection between the locking rod, the positioning rod, and the second spring of this utility model.

[0025] In the diagram: 1. Box body; 2. Box cover; 3. Slide groove; 4. Slider; 5. Expansion box; 6. Groove; 7. Lead screw; 8. Moving block; 9. First gear; 10. T-shaped rod; 11. Second gear; 12. T-shaped pin; 13. Slot; 14. First spring; 15. Mounting slot; 16. Limiting slot; 17. Rectangular block; 18. Positioning rod; 19. Locking rod; 20. Second spring; 21. Mounting plate; 22. Fixing slot; 23. Telescopic rod; 24. Limiting post; 25. Positioning slot. Detailed Implementation

[0026] 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.

[0027] Example

[0028] like Figure 1-7 As shown in the figure, an embodiment of the present invention discloses a portable trolley case with a telescopic handle, comprising a case body 1, a case cover 2 on the left side of the case body 1, two sliding grooves 3 on each of the inner walls of the case cover 2, sliders 4 slidably connected to the sliding grooves 3, and an extension box 5 with an opening on the same side fixedly connected among the four sliders 4, a groove 6 on the top inner wall of the case cover 2, a lead screw 7 rotatably connected between the inner walls of the two sides of the groove 6, a moving block 8 threadedly connected to the lead screw 7, a first gear 9 fixedly connected to the lead screw 7, a T-shaped rod 10 rotatably connected to the top of the case cover 2, the end of the T-shaped rod 10 extending into the groove 6 and fixedly connected to a second gear 11, the second gear 11 meshing with the first gear 9, a T-shaped pin 12 on the T-shaped rod 10, and multiple slots 13 annularly formed on the top of the case cover 2, the T-shaped pin 12 engaging with one of the multiple slots 13, the T-shaped pin 12... A first spring 14 is welded between the bottom inner wall and the top of the T-shaped rod 10. The first spring 14 is movably sleeved on the T-shaped latch 12. Pulling the T-shaped latch 12 stretches the first spring 14 during its movement, causing the T-shaped latch 12 to separate from one of the multiple latches 13. Then, the T-shaped rod 10 is rotated, and the T-shaped rod 10 drives the first gear 9 to rotate through the second gear 11. The first gear 9 drives the lead screw 7 to rotate, and the lead screw 7 drives the moving block 8 to move. The moving block 8 drives the expansion box 5 to move, and the expansion box 5 drives the slider 4 to slide on the corresponding slide groove 3. After moving to the appropriate position, the force on the T-shaped latch 12 is released, and the first spring 14, which was in a stretched state, returns to its original position. The first spring 14 drives the T-shaped latch 12 to engage with another of the multiple latches 13, fixing the adjusted expansion box 5, thereby expanding the storage space as needed.

[0029] In some embodiments, a mounting groove 15 with an opening on one side is provided on the right side of the housing 1, and a limiting groove 16 is provided on both inner walls of the mounting groove 15.

[0030] In some embodiments, a rectangular block 17 is welded to one inner wall of the mounting groove 15, and positioning rods 18 are welded to both sides of the rectangular block 17. A locking rod 19 is slidably connected to the positioning rod 18, and the locking rod 19 serves to fix the position.

[0031] In some embodiments, a second spring 20 is fixedly connected between the end of the latch 19 and one side of the rectangular block 17, and the second spring 20 is movably sleeved on the corresponding positioning rod 18.

[0032] In some embodiments, a mounting plate 21 is fitted onto the limiting groove 16. The mounting plate 21 has two fixing grooves 22, which are engaged with the corresponding locking rods 19. The mounting plate 21 serves as a support.

[0033] In some embodiments, the mounting plate 21 is provided with a telescopic pull rod 23, and two limiting posts 24 are welded to the bottom of the mounting plate 21. Two positioning grooves 25 are opened on the bottom inner wall of the mounting groove 15, and the positioning grooves 25 are engaged with the corresponding limiting posts 24.

[0034] Working principle or structural principle: During use and adjustment, pulling the T-shaped locking pin 12 stretches the first spring 14, causing it to separate from one of the multiple locking slots 13. Then, rotating the T-shaped rod 10 drives the first gear 9 via the second gear 11. The first gear 9 drives the lead screw 7, which in turn moves the moving block 8. The moving block 8 moves the expansion box 5, which in turn moves the slider 4 onto the corresponding groove 3. After moving to the desired position, releasing the T-shaped locking pin... The force of pin 12 causes the first spring 14, which is in a stretched state, to return to its original state. The first spring 14 drives the T-shaped locking pin 12 to engage with another slot 13 among the multiple slots 13, thus fixing the adjusted expansion box 5. This allows the storage space to be expanded as needed. When it is necessary to disassemble the telescopic rod 23, the two locking rods 19 are moved closer to each other. The locking rods 19 slide on the corresponding positioning rods 18 and compress the second spring 20, causing the locking rods 19 to separate from the corresponding fixing slots 22. Then, the mounting plate 21 is moved to remove the telescopic rod 23.

[0035] 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 portable trolley case with a telescopic handle, comprising a case body (1), characterized in that: The left side of the box body (1) is provided with a box cover (2). Two sliding grooves (3) are opened on both sides of the inner wall of the box cover (2). Sliding blocks (4) are slidably connected to the sliding grooves (3). An expansion box (5) with an opening on one side is fixedly connected between the four sliding blocks (4). A groove (6) is opened on the top inner wall of the box cover (2). A lead screw (7) is rotatably connected between the two inner walls of the groove (6). A moving block (8) is threaded on the lead screw (7). A first gear (9) is fixedly connected to the lead screw (7). A T-shaped rod (1) is rotatably connected to the top of the box cover (2). 0), the end of the T-shaped rod (10) extends into the groove (6) and is fixedly connected to the second gear (11), the second gear (11) meshes with the first gear (9), the T-shaped rod (10) is provided with a T-shaped pin (12), the top of the box cover (2) is provided with multiple slots (13) in an annular shape, the T-shaped pin (12) is engaged with one of the slots (13), the bottom inner wall of the T-shaped pin (12) is welded to the top of the T-shaped rod (10) with a first spring (14), the first spring (14) is movably sleeved on the T-shaped pin (12).

2. A portable trolley case with a telescopic handle according to claim 1, characterized in that: The right side of the housing (1) is provided with an installation groove (15) with one side open, and the inner walls on both sides of the installation groove (15) are provided with limit grooves (16).

3. A portable trolley case with a telescopic handle according to claim 2, characterized in that: A rectangular block (17) is welded to one side of the inner wall of the mounting groove (15), and a positioning rod (18) is welded to both sides of the rectangular block (17). A locking rod (19) is slidably connected to the positioning rod (18).

4. A portable trolley case with a telescopic handle according to claim 3, characterized in that: A second spring (20) is fixedly connected between the end of the lever (19) and one side of the rectangular block (17), and the second spring (20) is movably sleeved on the corresponding positioning rod (18).

5. A portable trolley case with a telescopic handle according to claim 4, characterized in that: An installation plate (21) is fitted onto the limiting groove (16), and two fixing grooves (22) are provided on the installation plate (21). The fixing grooves (22) are engaged with the corresponding locking rods (19).

6. A portable trolley case with a telescopic handle according to claim 5, characterized in that: The mounting plate (21) is provided with a telescopic pull rod (23), and two limiting posts (24) are welded to the bottom of the mounting plate (21). Two positioning grooves (25) are opened on the bottom inner wall of the mounting groove (15), and the positioning grooves (25) are engaged with the corresponding limiting posts (24).

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