Folding draw-bar box

Abstract

The utility model discloses a folding draw-bar box, which relates to the technical field of draw-bar boxes, and comprises a folding box, the front part of the folding box is rotatably connected with a box cover, the top end of the folding box is fixedly connected with a telescopic draw bar, the inner cavity of the folding box is fixedly connected with connecting cloth, and the bottom of the folding box is fixedly connected with a moving mechanism. A folding mechanism is inserted into the inner wall of the folding box, and the moving mechanism comprises a fixing frame. According to the folding draw-bar box disclosed by the utility model, the spring is contracted by pulling the draw bar, meanwhile, the draw bar drives the arc-shaped latch to synchronously move, so that the outer wall of the arc-shaped latch is not meshed with the outer wall of the gear any more, then the movable wheel can be folded into the inner wall of the fixed frame, and then the draw bar is loosened, so that the movable wheel can be folded under the action of the elastic force of the spring. And the outer walls of the arc-shaped clamping teeth are meshed with the outer walls of the gears, so that the connecting blocks and the moving wheels cannot continuously rotate, the moving wheels are folded, and the folding effect is achieved.

Description

Technical Field

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

[0002] Luggage, also known as a suitcase or trolley case, is a container used to carry belongings when traveling. It is an essential piece of equipment for daily travel and business trips. With the development of society, the Chinese government has placed great emphasis on the development of the tourism industry in recent years. China's tourism industry has entered a period of rapid growth. As luggage is an essential travel tool, the booming tourism industry is bound to boost the development of China's luggage industry.

[0003] For example, Chinese patent document CN215583340U discloses a folding suitcase, comprising a first box body and a second box body, which are connected by an X-shaped folding bracket. The folding bracket includes an adjustment assembly and two sets of folding assemblies arranged at intervals. The folding assembly includes a first connecting rod, a second connecting rod, a first guide rail provided on the inner wall of the first box body, and a second guide rail provided on the inner wall of the second box body. The middle position of the first connecting rod and the middle position of the second connecting rod are connected by a rotating shaft. The two ends of the first connecting rod are respectively connected to the first guide rail and the second guide rail, and the two ends of the second connecting rod are respectively connected to the first guide rail and the second guide rail. The above solution can realize the folding and expansion of the suitcase.

[0004] The existing technology has the following problems:

[0005] When folding or unfolding the trolley case in the prior art, it is impossible to limit the position of the trolley case according to the unfolded size, resulting in poor stability of the trolley case after unfolding because the specific unfolded size cannot be limited, which reduces the practicality of the device. At the same time, when the trolley case in the prior art is loaded and carried on a vehicle, its running wheels are exposed, which is easy to cause damage during loading, which is very easy to cause damage, reducing the service life of the device. Utility Model Content

[0006] The utility model provides a foldable trolley case to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A foldable trolley case comprises a foldable box, the front of which is rotatably connected to a box cover, the top of the foldable box is fixedly connected to a telescopic pull rod, the inner cavity of the foldable box is fixedly connected to a connecting cloth, the bottom of the foldable box is fixedly connected to a moving mechanism, the inner wall of the foldable box is plugged into a folding mechanism, the moving mechanism comprises a fixed frame, the outer wall of the fixed frame is fixedly connected to the bottom of the foldable box, and the folding mechanism comprises four limit rods, the outer walls of the limit rods are plugged into the inner wall of the foldable box.

[0009] Preferably, the inner wall of the fixed frame is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a connecting block, and the bottom end of the connecting block is rotatably connected to a moving wheel.

[0010] Preferably, a gear is fixedly connected to the outer wall of the rotating shaft, an arc-shaped tooth is clamped on the outer wall of the gear, a pull rod is fixedly connected to the outer wall of the arc-shaped tooth, and a connecting plate is fixedly connected to the outer wall of the pull rod.

[0011] Preferably: the outer wall of the pull rod is slidably connected to a fixed plate, one end of the fixed plate is fixedly connected to the inner cavity of the fixed frame, one end of the fixed plate is fixedly connected to a spring, one end of the spring is fixedly connected to the outer wall of the connecting plate, and the inner wall of the spring is movably sleeved with the outer wall of the pull rod.

[0012] Preferably, one end of the limit rod is fixedly connected to a limit spring, and one end of the limit spring is fixedly connected to the outer wall of the folding box.

[0013] Preferably, a slider is inserted into the outer wall of the limit rod, the outer wall of the slider is slidably connected to the inner wall of the folding box, the slider has a T-shaped shape, one end of the slider is rotatably connected to movable rod 1, and the outer wall of movable rod 1 is rotatably connected to movable rod 2.

[0014] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0015] 1. The utility model provides a foldable trolley case, which is pulled from a connection in the middle to opposite directions on both sides, so that a slider slides on the inner wall of the foldable box, and a movable rod one and a movable rod two rotate around the center of the two rods. When the outer wall of the slider contacts the outer wall of a limit rod, due to the shape of the limit rod, the limit rod moves toward the outer wall of the foldable box, and the limit rod drives a limit spring to extend. When the limit rod moves to a certain position, under the action of the elastic force of the limit spring, the outer wall of the limit rod is plugged into the inner wall of the slider, thereby limiting the position of the slider, so that it cannot continue to slide without the action of external force, thereby achieving a limiting effect.

[0016] 2. The utility model provides a foldable trolley case, which contracts the spring by pulling the pull rod, and at the same time drives the arc-shaped teeth to move synchronously, so that the outer wall of the arc-shaped teeth no longer meshes with the outer wall of the gear. Then, the movable wheel can be folded into the inner wall of the fixed frame, and then the pull rod is released. Under the action of the spring elastic force, the outer wall of the arc-shaped teeth meshes with the outer wall of the gear, so that the connecting block and the movable wheel cannot continue to rotate, thereby completing the folding of the movable wheel and achieving the folding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the main view of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the mobile mechanism of the utility model;

[0020] Figure 4 This is a structural diagram of the folding mechanism of the utility model;

[0021] Figure 5 For this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0022] In the figure: 1. folding box; 11. box cover; 12. telescopic pull rod; 13. connecting cloth; 2. moving mechanism; 21. fixed frame; 22. rotating shaft; 23. connecting block; 24. moving wheel; 25. gear; 26. arc-shaped tooth; 27. pull rod; 271. connecting plate; 28. spring; 29. fixed plate; 3. folding mechanism; 31. movable rod 1; 32. movable rod 2; 33. slider; 34. limit rod; 35. limit spring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-Figure 4 As shown, a foldable trolley case includes a foldable box 1, the front of the foldable box 1 is rotatably connected to a box cover 11, the top of the foldable box 1 is fixedly connected to a telescopic pull rod 12, the inner cavity of the foldable box 1 is fixedly connected to a connecting cloth 13, the bottom of the foldable box 1 is fixedly connected to a moving mechanism 2, the inner wall of the foldable box 1 is plugged into a folding mechanism 3, the moving mechanism 2 includes a fixed frame 21, the outer wall of the fixed frame 21 is fixedly connected to the bottom of the foldable box 1, and the folding mechanism 3 includes four limit rods 34, the outer walls of the limit rods 34 are plugged into the inner wall of the foldable box 1.

[0025] The folding box can be expanded or contracted by the folding mechanism 3 to facilitate the storage of items. Then, the moving mechanism 2 can be folded or not according to the needs.

[0026] like Figure 2 、 Figure 3 As shown, the inner wall of the fixed frame 21 is rotatably connected to the rotating shaft 22 , the outer wall of the rotating shaft 22 is fixedly connected to the connecting block 23 , and the bottom end of the connecting block 23 is rotatably connected to the moving wheel 24 .

[0027] By pulling the telescopic pull rod 12 to make the moving wheel 24 contact the ground, the folding box 1 can be pulled to move. Since the connection between the moving wheel 24 and the connecting block 23 is a rotation connection, the folding box 1 can move in multiple directions when being pulled to move.

[0028] like Figure 2 、 Figure 3 As shown, the outer wall of the rotating shaft 22 is fixedly connected to the gear 25, the outer wall of the gear 25 is clamped with an arc-shaped tooth 26, the outer wall of the arc-shaped tooth 26 is fixedly connected to the pull rod 27, the outer wall of the pull rod 27 is fixedly connected to the connecting plate 271, the outer wall of the pull rod 27 is slidably connected to the fixed plate 29, one end of the fixed plate 29 is fixedly connected to the inner cavity of the fixed frame 21, one end of the fixed plate 29 is fixedly connected to the spring 28, one end of the spring 28 is fixedly connected to the outer wall of the connecting plate 271, and the inner wall of the spring 28 is movably connected to the outer wall of the pull rod 27.

[0029] By pulling the pull rod 27, the pull rod 27 drives the connecting plate 271 to move synchronously, causing the spring 28 to contract. At the same time, the pull rod 27 drives the arc-shaped tooth 26 to move synchronously, so that the outer wall of the arc-shaped tooth 26 no longer engages with the outer wall of the gear 25. Then the moving wheel 24 can be rotated to fold the outer wall of the moving wheel 24 into the inner wall of the fixed frame 21. When the moving wheel 24 is completely folded into the inner cavity of the fixed frame 21, the pull rod 27 is released. Under the action of the elastic force of the spring 28, the outer wall of the arc-shaped tooth 26 engages with the outer wall of the gear 25 again, thereby limiting the rotating shaft 22 and preventing the connecting block 23 and the moving wheel 24 from continuing to rotate, thereby completing the folding of the moving wheel 24 and achieving a folding effect.

[0030] like Figure 2 、 Figure 4 and Figure 5 As shown, one end of the limit rod 34 is fixedly connected to the limit spring 35, one end of the limit spring 35 is fixedly connected to the outer wall of the folding box 1, the outer wall of the limit rod 34 is plugged with a slider 33, the outer wall of the slider 33 is slidably connected to the inner wall of the folding box 1, the outer shape of the slider 33 is T-shaped, one end of the slider 33 is rotatably connected to the movable rod 1 31, and the outer wall of the movable rod 1 31 is rotatably connected to the movable rod 2 32.

[0031] When the folding box 1 is folded, the outer wall of the slider 33 is moved to the outer wall of the folding box 1, and the limit rod 34 is driven by the limit spring 35 to extend. When the limit rod 34 moves to a certain position, the outer wall of the limit rod 34 is plugged into the inner wall of the slider 33 under the action of the elastic force of the limit spring 35, thereby limiting the position of the slider 33, so that it cannot continue to slide without the action of external force, thereby achieving a limiting effect.

[0032] When the trolley case 1 is unfolded, the folding box 1 is pulled from the middle connection to the opposite directions on both sides, so that the slider 33 slides on the inner wall of the folding box 1, and the movable rod 1 31 and the movable rod 2 32 rotate around the center of the two rods. The slider 33 guides the movable rod 1 31 and the movable rod 2 32, so that the movable rod 1 31 and the movable rod 2 32 are more stable when rotating, thereby making the movable rod 1 31 and the movable rod 2 32 support the folding box 1 more stable. When it is suitable, the expansion can be stopped. During the expansion process, the connecting cloth 13 is expanded synchronously, and then the folding box 1 can be used to hold items. After the items are placed, the box cover 11 can be closed, and the box cover 11 and the folding box 1 can be connected by a zipper. When the folding box 1 needs to be loaded onto a vehicle, the pull rod 27 is pulled, and the pull rod 27 drives the connecting plate 271 to move synchronously, causing the spring 28 to contract. At the same time, the pull rod 27 drives the arc-shaped tooth 26 to move synchronously, so that the outer wall of the arc-shaped tooth 26 is no longer engaged with the outer wall of the gear 25. , then the moving wheel 24 can be rotated to fold the outer wall of the moving wheel 24 into the inner wall of the fixed frame 21. When the moving wheel 24 is completely folded into the inner cavity of the fixed frame 21, the pull rod 27 is released. Under the action of the elastic force of the spring 28, the outer wall of the arc-shaped tooth 26 engages with the outer wall of the gear 25 again, thereby limiting the rotating shaft 22 and preventing the connecting block 23 and the moving wheel 24 from continuing to rotate. In this way, the folding of the moving wheel 24 is completed, achieving a folding effect, thereby greatly improving the user experience.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A foldable trolley case, comprising a foldable case (1), characterized in that: The front of the folding box (1) is rotatably connected to a box cover (11), the top of the folding box (1) is fixedly connected to a telescopic pull rod (12), the inner cavity of the folding box (1) is fixedly connected to a connecting cloth (13), the bottom of the folding box (1) is fixedly connected to a moving mechanism (2), the inner wall of the folding box (1) is plugged with a folding mechanism (3), the moving mechanism (2) includes a fixed frame (21), the outer wall of the fixed frame (21) is fixedly connected to the bottom of the folding box (1), and the folding mechanism (3) includes four limiting rods (34), the outer walls of the limiting rods (34) are plugged with the inner wall of the folding box (1).

2. The foldable suitcase according to claim 1, characterized in that: The inner wall of the fixed frame (21) is rotatably connected to a rotating shaft (22), the outer wall of the rotating shaft (22) is fixedly connected to a connecting block (23), and the bottom end of the connecting block (23) is rotatably connected to a moving wheel (24).

3. The foldable suitcase according to claim 2, characterized in that: The outer wall of the rotating shaft (22) is fixedly connected to a gear (25), the outer wall of the gear (25) is clamped with an arc-shaped clamping tooth (26), the outer wall of the arc-shaped clamping tooth (26) is fixedly connected to a pull rod (27), and the outer wall of the pull rod (27) is fixedly connected to a connecting plate (271).

4. The foldable suitcase according to claim 3, characterized in that: The outer wall of the pull rod (27) is slidably connected to a fixed plate (29), one end of the fixed plate (29) is fixedly connected to the inner cavity of the fixed frame (21), one end of the fixed plate (29) is fixedly connected to a spring (28), one end of the spring (28) is fixedly connected to the outer wall of the connecting plate (271), and the inner wall of the spring (28) is movably sleeved with the outer wall of the pull rod (27).

5. The foldable suitcase according to claim 1, characterized in that: One end of the limiting rod (34) is fixedly connected to the limiting spring (35), and one end of the limiting spring (35) is fixedly connected to the outer wall of the folding box (1).

6. The foldable suitcase according to claim 1, characterized in that: The outer wall of the limiting rod (34) is plugged with a slider (33), the outer wall of the slider (33) is slidably connected to the inner wall of the folding box (1), the outer shape of the slider (33) is T-shaped, one end of the slider (33) is rotatably connected to the movable rod 1 (31), and the outer wall of the movable rod 1 (31) is rotatably connected to the movable rod 2 (32).

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