Foldable draw-bar box

Abstract

The utility model discloses a foldable draw-bar box, which relates to the technical field of draw-bar boxes and comprises a draw-bar box mechanism, a moving mechanism is mounted on one side of the draw-bar box mechanism, and the draw-bar box mechanism comprises a first box body, a second box body and a third box body. The position of a positioning rod is moved to drive a moving block to move, two pushing rods rotate and push two rotating pushing rods to move, so that the distance among a first supporting shell, a second supporting shell and a third supporting shell is adjusted, and the internal space of the draw-bar box mechanism is adjusted by adjusting the folding position of an elastic telescopic shell; meanwhile, the first supporting shell, the second supporting shell and the third supporting shell support and protect the elastic telescopic shell, so that the elastic telescopic shell is prevented from being extruded and deformed by an object in the draw-bar box mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling suitcases, in particular to a foldable rolling suitcase. Background Art

[0002] A rolling suitcase refers to a luggage with a pull rod and wheels. It is widely used because of its convenience. There are single-tube pull rods and double-tube pull rods for the rolling suitcase, and the tubes of the pull rods are also divided into square tubes and round tubes, which is convenient to drag when walking and greatly reduces the burden.

[0003] For example, the telescopic rolling suitcase disclosed in the publication number CN209463449U has a box body composed of an upper half box shell and a lower half box shell; vertical upper layer sliding grooves and lower layer sliding rails are respectively fixed on the upper half box shell and the lower half box shell, and the upper half box shell is installed on the lower half box shell through the cooperation of the upper layer sliding grooves and the rail grooves of the lower layer sliding rails, so that the upper half box shell can slide up and down relative to the lower half box shell.

[0004] In the prior art, according to different usage requirements, rolling suitcases of different volumes are needed. Most of them increase and decrease the volume of the rolling suitcase by folding and telescoping the rolling suitcase. However, most of the folding parts of the rolling suitcase are made of soft materials, resulting in that the objects inside the luggage are easy to expand and deform the telescopic part, affecting the aesthetics of the luggage and being more likely to be damaged. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem that most of the folding parts of the rolling suitcase in the prior art are made of soft materials, resulting in that the objects inside the luggage are easy to expand and deform the telescopic part, and to propose a foldable rolling suitcase.

[0006] To achieve the above object, the present utility model adopts the following technical solution: A foldable trolley case, comprising a trolley case mechanism, a moving mechanism is installed on one side of the trolley case mechanism, the trolley case mechanism includes a first box body, a second box body and a third box body, one end of the first box body is rotatably connected to one end of the second box body, a folding mechanism is installed between the second box body and the third box body, the folding mechanism includes an elastic telescopic shell and a first support shell, one end of the elastic telescopic shell is fixedly connected to one end of the second box body, the other end of the elastic telescopic shell is fixedly connected to one end of the third box body, one end of the first support shell is fixedly connected to one end of the second box body, the other end of the first support shell is sleeved with a second support shell, one end of the second support shell is sleeved with a third support shell, one end of the third support shell is fixedly connected to one end of the third box body, a positioning sleeve is fixedly connected to the outside of the second support shell, a plurality of the positioning sleeves are linearly distributed at equal intervals on one side of the second support shell, a positioning rod is inserted into the inside of one of the positioning sleeves, a moving block is threadedly connected to the outside of the positioning rod, push rods are rotatably connected to both ends of the moving block, one ends of the two push rods are rotatably connected to a rotating push rod, one end of one of the rotating push rods is fixedly connected to one side of the second box body, and one end of the other rotating push rod is fixedly connected to one side of the third support shell.

[0007] Preferably, sliding strips are fixedly connected to the inside of the second support shell and the inside of the third support shell, sliding grooves are formed on the outside of the first support shell and the outside of the second support shell, and the outside of the sliding strips is slidably connected to the inside of the sliding grooves.

[0008] Preferably, a fixed frame is fixedly connected to one side of the second support shell, a slot is formed on one side of the fixed frame, and the positioning rod is slidably connected to the inside of the slot.

[0009] Preferably, reinforcing ribs are fixedly connected to the outside of the first box body and the outside of the third box body.

[0010] Preferably, anti-collision columns are fixedly connected to the four corners of the first box body and the four corners of the third box body, and anti-collision blocks are fixedly connected to one ends of the anti-collision columns.

[0011] Preferably, a handle is rotatably connected to the outside of the second box body.

[0012] Preferably, a buckle assembly is installed at one end of the first box body, and one end of the buckle assembly is installed at one end of the second box body.

[0013] Preferably, the moving mechanism includes a fixing plate, one side of the fixing plate is fixedly connected to one side of the third box body, lower pull rods are fixedly connected to both ends of the fixing plate, an upper pull rod is slidably connected to one end of the lower pull rod, and a handgrip is fixedly connected to one end of the upper pull rod.

[0014] Preferably, the other end of the lower pull rod is fixedly connected with a mounting base, one side of the mounting base is fixedly connected to one side of the third box body, and the other side of the mounting base is rotatably connected with a moving wheel.

[0015] Preferably, a positioning frame is fixedly connected to one side of the second box body.

[0016] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0017] 1. In the present utility model, by rotating the positioning rod, the positioning rod is separated from the positioning sleeve, the position of the positioning rod is moved, driving the moving block to move, the two push rods rotate, and the two rotating push rods are pushed to move, thereby adjusting the distance between the first support shell, the second support shell and the third support shell. The internal space of the trolley case mechanism is adjusted by adjusting the folding position of the elastic telescopic shell. At the same time, the first support shell, the second support shell and the third support shell support and protect the elastic telescopic shell to prevent the elastic telescopic shell from being squeezed and deformed by the objects inside the trolley case mechanism.

[0018] 2. In the present utility model, the strength of the first box body and the third box body is improved by arranging the reinforcing ribs, preventing the first box body and the third box body from deforming under external forces. Anti-collision columns and anti-collision blocks are arranged at the corners of the first box body and the third box body to protect the collision parts, prevent the trolley case mechanism from being damaged, and at the same time reduce the collision of the objects inside the trolley case mechanism, thereby improving the service life of the trolley case mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the first three-dimensional structure schematic diagram of a foldable trolley case proposed by the present utility model;

[0020] Figure 2 is the second three-dimensional structure schematic diagram of a foldable trolley case proposed by the present utility model;

[0021] Figure 3 is the connection structure schematic diagram of the folding mechanism of a foldable trolley case proposed by the present utility model;

[0022] Figure 4 is a foldable trolley case proposed by the present utility model Figure 3 partial enlarged structure schematic diagram at A;

[0023] Figure 5 is the disassembly structure schematic diagram of the trolley case mechanism and the moving mechanism of a foldable trolley case proposed by the present utility model.

[0024] Legend: 1. Trolley case mechanism; 11. First box body; 12. Second box body; 13. Third box body; 14. Reinforcing rib; 15. Handle; 16. Buckle assembly; 17. Anti-collision block; 18. Anti-collision column; 2. Folding mechanism; 21. Elastic telescopic shell; 22. First support shell; 23. Second support shell; 24. Third support shell; 25. Sliding bar; 26. Sliding groove; 27. Positioning sleeve; 28. Rotating push rod; 29. Push rod; 210. Moving block; 211. Positioning rod; 212. Groove; 213. Fixed frame; 3. Moving mechanism; 31. Lower pull rod; 32. Upper pull rod; 33. Hand-held part; 34. Fixed plate; 35. Installation base; 36. Positioning frame; 37. Moving wheel. Detailed implementation mode

[0025] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0026] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0027] Embodiment 1: As Figure 1 - Figure 5As shown in the figure, the utility model provides a foldable trolley case, which includes a trolley case mechanism 1. A moving mechanism 3 is installed on one side of the trolley case mechanism 1. The trolley case mechanism 1 includes a first box body 11, a second box body 12 and a third box body 13. One end of the first box body 11 is rotatably connected to one end of the second box body 12. A folding mechanism 2 is installed between the second box body 12 and the third box body 13. The folding mechanism 2 includes an elastic telescopic shell 21 and a first support shell 22. One end of the elastic telescopic shell 21 is fixedly connected to one end of the second box body 12, and the other end of the elastic telescopic shell 21 is fixedly connected to one end of the third box body 13. One end of the first support shell 22 is fixedly connected to one end of the second box body 12. The other end of the first support shell 22 is sleeved with a second support shell 23. One end of the second support shell 23 is sleeved with a third support shell 24. One end of the third support shell 24 is fixedly connected to one end of the third box body 13. A positioning sleeve 27 is fixedly connected to the outer side of the second support shell 23. A plurality of positioning sleeves 27 are linearly distributed at equal intervals on one side of the second support shell 23. A positioning rod 211 is inserted into the interior of one of the positioning sleeves 27. A moving block 210 is threadedly connected to the outer part of the positioning rod 211. Push rods 29 are rotatably connected to both ends of the moving block 210. One end of each of the two push rods 29 is rotatably connected to a rotating push rod 28. One end of one of the rotating push rods 28 is fixedly connected to one side of the second box body 12, and one end of the other rotating push rod 28 is fixedly connected to one side of the third support shell 24; Sliding strips 25 are fixedly connected to the inner side of the second support shell 23 and the interior of the third support shell 24. Sliding grooves 26 are formed on the outer sides of the first support shell 22 and the second support shell 23. The outer parts of the sliding strips 25 are slidably connected to the interiors of the sliding grooves 26; A fixed frame 213 is fixedly connected to one side of the second support shell 23. A slot 212 is formed on one side of the fixed frame 213. The positioning rod 211 is slidably connected to the interior of the slot 212.

[0028] By rotating the positioning rod 211, the positioning rod 211 moves on the moving block 210 connected by threads, causing the positioning rod 211 to separate from the inserted positioning sleeve 27. The position of the positioning rod 211 is moved. The positioning rod 211 slides inside the slot 212, and the straight-line motion of the fixed positioning rod 211 drives the moving block 210 to move. The two push rods 29 rotate, driving the two rotating push rods 28 to move, thereby adjusting the distance between the first support shell 22, the second support shell 23, and the third support shell 24. The sliding strip 25 slides inside the sliding groove 26, causing the first support shell 22, the second support shell 23, and the third support shell 24 to all perform straight-line motions. The elastic telescopic shell 21 extends or contracts. Subsequently, the positioning rod 211 is rotated in the reverse direction to insert it into the corresponding positioning sleeve 27, and the position of the positioning rod 211 can be fixed, thereby adjusting the internal space of the luggage case mechanism 1. By adjusting the folding position of the elastic telescopic shell 21, the internal space of the luggage case mechanism 1 is adjusted. At the same time, the first support shell 22, the second support shell 23, and the third support shell 24 are installed outside the elastic telescopic shell 21 to support and protect the elastic telescopic shell 21, preventing the elastic telescopic shell 21 from being squeezed and deformed by the objects inside the luggage case mechanism 1.

[0029] Embodiment 2: As Figure 1 and Figure 5 shown, reinforcing ribs 14 are fixedly connected to the outer sides of the first box body 11 and the third box body 13; anti-collision columns 18 are fixedly connected to the four corners of the first box body 11 and the four corners of the third box body 13, and an anti-collision block 17 is fixedly connected to one end of the anti-collision column 18; a handle 15 is rotatably connected to the outside of the second box body 12; a buckle assembly 16 is installed at one end of the first box body 11, and one end of the buckle assembly 16 is installed at one end of the second box body 12; the moving mechanism 3 includes a fixing plate 34, one side of the fixing plate 34 is fixedly connected to one side of the third box body 13, two lower pull rods 31 are fixedly connected to both ends of the fixing plate 34, an upper pull rod 32 is slidably connected to one end of the lower pull rod 31, and a hand-held part 33 is fixedly connected to one end of the upper pull rod 32; the other end of the lower pull rod 31 is fixedly connected to an installation base 35, one side of the installation base 35 is fixedly connected to one side of the third box body 13, and a moving wheel 37 is rotatably connected to the other side of the installation base 35; a positioning frame 36 is fixedly connected to one side of the second box body 12.

[0030] The effects achieved by the entire embodiment are as follows. A plurality of reinforcing ribs 14 are provided on the outer sides of the first box body 11 and the third box body 13 to improve the strength of the first box body 11 and the third box body 13 and prevent the first box body 11 and the third box body 13 from deforming under external forces. The first box body 11 and the second box body 12 can be opened and closed through the buckle assembly 16. Handles 15 are rotatably provided on one side and the top of the second box body 12, and the handle 15 can be held by hand to lift the suitcase. Anti-collision columns 18 and anti-collision blocks 17 are provided at the corners of the first box body 11 and the third box body 13 where there are many collisions to protect the collision areas, prevent the damage of the suitcase mechanism 1, and reduce the collision of the objects inside the suitcase mechanism 1. The upper pull rod 32 is slidably inserted into the lower pull rod 31. Pull the upper pull rod 32 out of the lower pull rod 31, and then pull the hand-held part 33 to drive the moving wheels 37 to rotate, which can drive the suitcase mechanism 1 to move. The upper pull rod 32 is received into the lower pull rod 31 to reduce the occupied space. A positioning frame 36 is installed at the bottom of the second box body 12, and when the positioning frame 36 contacts the ground, the suitcase mechanism 1 can be fixed to prevent it from sliding.

[0031] The usage method and working principle of this device are as follows: By setting the reinforcing ribs 14, the strength of the first box body 11 and the third box body 13 is improved. The buckle assembly 16 can open and close the first box body 11 and the second box body 12. Anti-collision columns 18 and anti-collision blocks 17 are provided at the corners of the first box body 11 and the third box body 13 to protect the collision areas. Pull the upper pull rod 32 out of the lower pull rod 31, and then pull the hand-held part 33 to drive the moving wheels 37 to rotate, which can drive the suitcase mechanism 1 to move. When the positioning frame 36 contacts the ground, the suitcase mechanism 1 can be fixed to prevent it from sliding. When it is necessary to adjust the internal space of the suitcase mechanism 1, by rotating the positioning rod 211, the positioning rod 211 is separated from the inserted positioning sleeve 27, move the position of the positioning rod 211, drive the moving block 210 to move, the two push rods 29 rotate, and push the two rotating push rods 28 to move, so as to adjust the distance between the first support shell 22, the second support shell 23 and the third support shell 24. The elastic telescopic shell 21 extends or contracts, and then rotate the positioning rod 211 in the reverse direction to insert it into the corresponding positioning sleeve 27, and the position of the positioning rod 211 can be fixed, so as to adjust the internal space of the suitcase mechanism 1.

[0032] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A foldable trolley case, comprising a trolley case mechanism (1), characterized in that: A moving mechanism (3) is installed on one side of the suitcase mechanism (1). The suitcase mechanism (1) includes a first box body (11), a second box body (12) and a third box body (13). One end of the first box body (11) is rotatably connected to one end of the second box body (12). A folding mechanism (2) is installed between the second box body (12) and the third box body (13). The folding mechanism (2) includes an elastic telescopic shell (21) and a first support shell (22). One end of the elastic telescopic shell (21) is fixedly connected to one end of the second box body (12), and the other end of the elastic telescopic shell (21) is fixedly connected to one end of the third box body (13). One end of the first support shell (22) is fixedly connected to one end of the second box body (12). The other end of the first support shell (22) is sleeved with a second support shell (23). One end of the second support shell (23) is sleeved with a third support shell (24). One end of the third support shell (24) is fixedly connected to one end of the third box body (13). A positioning sleeve (27) is fixedly connected to the outside of the second support shell (23). A plurality of the positioning sleeves (27) are linearly distributed at equal intervals on one side of the second support shell (23). A positioning rod (211) is inserted into the inside of one of the positioning sleeves (27). A moving block (210) is threadedly connected to the outside of the positioning rod (211). Push rods (29) are rotatably connected to both ends of the moving block (210). One end of each of the two push rods (29) is rotatably connected to a rotating push rod (28). One end of one of the rotating push rods (28) is fixedly connected to one side of the second box body (12), and one end of the other rotating push rod (28) is fixedly connected to one side of the third support shell (24).

2. The foldable luggage trolley according to claim 1, wherein: Sliding strips (25) are fixedly connected to the inside of the second support shell (23) and the inside of the third support shell (24). Sliding grooves (26) are formed in the outside of the first support shell (22) and the outside of the second support shell (23). The outside of the sliding strip (25) is slidably connected to the inside of the sliding groove (26).

3. A foldable trolley case according to claim 1, characterized in that: A fixed frame (213) is fixedly connected to one side of the second support shell (23). A slot (212) is formed in one side of the fixed frame (213). The positioning rod (211) is slidably connected to the inside of the slot (212).

4. A foldable trolley case according to claim 1, characterized in that: Reinforcing ribs (14) are fixedly connected to the outside of the first box body (11) and the outside of the third box body (13).

5. A foldable trolley case according to claim 1, characterized in that: Anti-collision columns (18) are fixedly connected to the four corners of the first box body (11) and the four corners of the third box body (13). An anti-collision block (17) is fixedly connected to one end of the anti-collision column (18).

6. A foldable trolley case according to claim 1, wherein: A handle (15) is rotatably connected to the outside of the second box body (12).

7. A foldable trolley case according to claim 1, wherein: A buckle assembly (16) is installed at one end of the first box body (11). One end of the buckle assembly (16) is installed at one end of the second box body (12).

8. A foldable trolley case according to claim 1, characterized in that: The moving mechanism (3) includes a fixing plate (34), one side of the fixing plate (34) is fixedly connected to one side of the third box body (13), both ends of the fixing plate (34) are fixedly connected with a lower pull rod (31), one end of the lower pull rod (31) is slidably connected with an upper pull rod (32), and one end of the upper pull rod (32) is fixedly connected with a hand-held part (33).

9. A foldable trolley case according to claim 8, wherein: The other end of the lower pull rod (31) is fixedly connected with a mounting base (35), one side of the mounting base (35) is fixedly connected to one side of the third box body (13), and the other side of the mounting base (35) is rotatably connected with a moving wheel (37).

10. A foldable trolley case according to claim 1, characterized in that: One side of the second box body (12) is fixedly connected with a positioning frame (36).

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