Foldable trolley backpack base

Abstract

The foldable trolley backpack base comprises a bottom block, a seat plate is rotatably arranged on one side of the bottom block, a supporting plate is horizontally and fixedly connected to the bottom face of the side, close to the seat plate, of the bottom block, the bottom face of the end of the seat plate makes contact with the top face of the supporting plate, two supporting blocks are fixedly connected to the two sides of the supporting plate, and top grooves are formed in the top faces of the supporting blocks. The end, away from the bottom block, of the top groove is of an opening structure, two strip-shaped blocks are fixedly connected to the two sides of the bottom face of the seat plate, and the ends of the strip-shaped blocks are inserted into the top groove. When the pull rod base is used, the seat plate can rotate to the horizontal position, the clamping handle is used for clamping the bottom face of the supporting block, so that the position of the seat plate is stable, when the pull rod base is not used, the seat plate can be folded to the vertical state, the bottom area is reduced, the pull rod base is overall portable, convenient to store and more convenient, and meanwhile the height of the side plate provided with the hook can be changed. The orientation of the side plate can be changed, so that belts at the tops of different types of backpacks can be conveniently hung, and the adaptability is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of trolley backpack bases, specifically a foldable trolley backpack base. Background Technology

[0002] Backpacks are bags carried on the back, made of various materials such as genuine leather, plastic, polyester, canvas, nylon, and cotton linen. Some backpacks are quite heavy when filled with items, making them difficult to carry. Therefore, trolley backpack bases have emerged on the market. These bases have wheels and a pull rod, allowing the backpack to be mounted on them for easy pulling and saving effort. They are a common household item. However, trolley backpack bases are relatively bulky. For example, Chinese utility model patent CN216165832U discloses a foldable trolley backpack structure, including a backpack with shoulder straps symmetrically fixed to one side, a moving device fixed to the bottom, a support plate fixed to one side, and fixed sleeves symmetrically fixed to both ends of the top surface of the support plate. Pull rods are respectively engaged within the fixed sleeves, and the pull rods have symmetrically arranged limiting grooves on both sides. Limiting blocks are engaged within the limiting grooves, and the limiting blocks are symmetrically fixed to the top of the fixed sleeves. Handles are fixed to both ends of the top of the pull rods. However, current trolley backpack bases have the following drawbacks:

[0003] The base of a trolley backpack consists of a trolley and a horizontal support base for the backpack. This results in a large base area, making it inconvenient to store or carry alone.

[0004] To address this issue, we propose a foldable trolley backpack base. Utility Model Content

[0005] The purpose of this invention is to provide a foldable trolley backpack base to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a foldable trolley backpack base, comprising a base block, a seat plate rotatably mounted on one side of the base block, a support plate horizontally fixed to the bottom surface of the base block near the seat plate, the bottom surface of the seat plate contacting the top surface of the support plate, two support blocks fixed to both sides of the support plate, a top groove formed on the top surface of the support blocks, the top end of the top groove being open, two strip blocks fixed to both sides of the bottom surface of the seat plate, the ends of the strip blocks being inserted into the top groove, a sleeve fixed to the position of the strip blocks near the base block, a rotating post rotatably mounted at the bottom end of the sleeve, a locking handle fixed to the bottom end of the rotating post, a through groove formed on the bottom surface of the support blocks, the through groove communicating with the top groove, the rotating post passing through the through groove, and the two side surfaces of the locking handle contacting the bottom surface of the support blocks.

[0007] Preferably, the sleeve is rotatably connected to the shaft post, the top end of the shaft post is fixedly connected to the bottom end of the shaft post, two rotating grooves are opened on both sides of the shaft post, two arc-shaped locking blocks are rotatably arranged in the two rotating grooves, four locking grooves are evenly opened on the inner side wall of the sleeve, the ends of the two arc-shaped locking blocks are inserted into two of the locking grooves, the sleeve post is vertically fixed in the rotating groove, the arc-shaped locking blocks are rotatably connected to the sleeve post, and a torsion spring is provided at the rotatable connection between the sleeve post and the rotating groove.

[0008] Preferably, a tie rod seat is fixedly connected to the top surface of the middle part of the base block, the tie rod seat is vertically fixedly sleeved to the bottom end of the main tie rod, a sliding cavity is opened inside the top end of the main tie rod, the sliding cavity is vertically slidably sleeved to the sub tie rod, the top end of the sub tie rod is sleeved to the top sleeve, and a handle is fixedly connected to the top sleeve. The horizontal cross-section of the main tie rod and the sub tie rod are both elliptical.

[0009] Preferably, the main tie rod is slidably fitted with a sliding sleeve, the side wall of the sliding sleeve is fixedly connected to a side plate, two hooks are fixedly connected to both sides of the side plate, a first threaded sleeve is fixedly connected to the side plate, the first threaded sleeve is threadedly connected to a first hand-turning bolt, and the end of the first hand-turning bolt contacts the surface of the main tie rod.

[0010] Preferably, the side wall of the sub-pull rod has a groove, the top of the main pull rod is horizontally fixed to the side of the groove with a second threaded sleeve, the second threaded sleeve is threaded to a second hand-turning bolt, the end of the second hand-turning bolt contacts the side wall of the groove, the top sleeve is horizontally fixed to the side of the groove with a third threaded sleeve, the third threaded sleeve is threaded to a third hand-turning bolt, the end of the third hand-turning bolt contacts the side wall of the groove.

[0011] Preferably, multiple hinge seats are fixed to the side wall of the base block, multiple hinge seats are rotatably connected to multiple hinge blocks, multiple hinge blocks are fixed to the end of the seat plate, two pulleys are rotatably connected to the bottom surfaces at both ends of the base block, and a support leg is fixed to the bottom surface of the seat plate at the end away from the base block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When in use, the seat can be rotated to a horizontal position, and the bottom surface of the support block is secured by the locking handle, making the seat stable. When not in use, it can be folded into a vertical state to reduce the bottom area, making the pull rod base more portable and easier to store. The side panel with hooks can also be adjusted in height and orientation to easily hang straps on the top of different types of backpacks, making it more adaptable. Attached Figure Description

[0014] Figure 1 These are schematic diagrams of the main structure in the first and second embodiments of this utility model;

[0015] Figure 2These are schematic diagrams of the main body structure after folding in the first and second embodiments of this utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure at the sleeve in the second embodiment of the present invention.

[0017] In the diagram: 1. Base block; 2. Seat plate; 3. Support plate; 4. Strip block; 5. Support block; 6. Top groove; 7. Through groove; 8. Sleeve; 9. Rotary column; 10. Clamping handle; 13. Pulley; 14. Support leg; 15. Tie rod seat; 16. Main tie rod; 17. Sliding cavity; 18. Sub-tier rod; 19. Top sleeve; 20. Handle; 21. Sliding sleeve; 22. Side plate; 23. Hook; 24. Rotary groove; 25. Arc-shaped clamping block; 26. Clamping groove; 27. Sleeve column; 28. Torsion spring; 29. ​​Shaft column; 30. Hinge seat; 31. Hinge block; 32. First threaded sleeve; 33. First hand-turning bolt; 34. Second threaded sleeve; 35. Second hand-turning bolt; 36. Third threaded sleeve; 37. Third hand-turning bolt; 38. Embedded groove. Detailed Implementation

[0018] 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.

[0019] Example 1:

[0020] Please see Figure 1-2 This utility model provides a technical solution: a foldable trolley backpack base, including a base block 1, a seat plate 2 rotatably mounted on one side of the base block 1, a support plate 3 horizontally fixed to the bottom surface of the base block 1 near the seat plate 2, the bottom surface of the seat plate 2 contacting the top surface of the support plate 3, two support blocks 5 fixed to both sides of the support plate 3, a top groove 6 formed on the top surface of the support block 5, the top end of the top groove 6 being open away from the base block 1, two strip blocks 4 fixed to both sides of the bottom surface of the seat plate 2, the ends of the strip blocks 4 inserted into the top groove 6, and the strip blocks 4 fixed near the base block 1. The sleeve 8 is connected to a rotating post 9 at its bottom end. The bottom end of the rotating post 9 is fixedly connected to a clamping handle 10. The bottom surface of the support block 5 has a through groove 7 that connects to the top groove 6. The rotating post 9 passes through the through groove 7. The two sides of the clamping handle 10 contact the bottom surface of the support block 5. When the seat plate 2 is in use, it should be folded to a horizontal position and the bottom surface of the support block 5 should be clamped by the clamping handle 10 to make the position of the seat plate 2 stable. When not in use, it can be folded to a vertical position to reduce the bottom area, making the pull rod base more portable and easier to store.

[0021] Example 2:

[0022] Please see Figure 1-3 This is the second embodiment of the present invention. Based on the previous embodiment, the sleeve 8 is rotatably connected to the shaft 29. The top of the rotating column 9 is fixedly connected to the bottom of the shaft 29. Two rotating grooves 24 are opened on both sides of the shaft 29. Two arc-shaped locking blocks 25 are rotatably arranged in the two rotating grooves 24. Four locking grooves 26 are evenly opened on the inner side wall of the sleeve 8. The ends of the two arc-shaped locking blocks 25 are inserted into two of the locking grooves 26. The sleeve 27 is vertically fixed in the rotating groove 24. The arc-shaped locking blocks 25 are rotatably connected to the sleeve 27. A torsion spring 28 is provided at the rotatable connection between the sleeve 27 and the rotating groove 24. By utilizing the elastic arc-shaped locking blocks 25 and the rotating groove 24, the clamping handle 10 can be rotated ninety degrees, which makes it easy to rotate the clamping handle 10 to clamp the position of the support block 5.

[0023] A tie rod seat 15 is fixedly connected to the top surface of the middle part of the bottom block 1. The tie rod seat 15 is vertically fixedly sleeved to the bottom end of the main tie rod 16. A sliding cavity 17 is opened inside the top end of the main tie rod 16. The sliding cavity 17 is vertically slidably sleeved to the sub tie rod 18. The top end of the sub tie rod 18 is sleeved to the top sleeve 19. A handle 20 is fixedly connected to the top sleeve 19. The horizontal cross-sections of the main tie rod 16 and the sub tie rod 18 are both elliptical.

[0024] The main pull rod 16 is slidably connected to the sliding sleeve 21. The side wall of the sliding sleeve 21 is fixedly connected to the side plate 22. Two hooks 23 are fixedly connected to both sides of the side plate 22. The first threaded sleeve 32 is fixedly connected to the side plate 22. The first threaded sleeve 32 is threadedly connected to the first hand-turning bolt 33. The end of the first hand-turning bolt 33 contacts the surface of the main pull rod 16, which can change the height of the sliding sleeve 21 and the orientation of the side plate 22, so that the top strap of the backpack can be hung with the hook 23.

[0025] A groove 38 is provided on the side wall of the secondary tie rod 18. The top of the main tie rod 16 is horizontally fixed to the second threaded sleeve 34 near the groove 38. The second threaded sleeve 34 is threaded to the second hand-turning bolt 35. The end of the second hand-turning bolt 35 contacts the side wall of the groove 38. The top sleeve 19 is horizontally fixed to the third threaded sleeve 36 near the groove 38. The third threaded sleeve 36 is threaded to the third hand-turning bolt 37. The end of the third hand-turning bolt 37 contacts the side wall of the groove 38.

[0026] Multiple hinge seats 30 are fixed to the side wall of the base block 1. Multiple hinge seats 30 are rotatably connected to multiple hinge blocks 31. Multiple hinge blocks 31 are fixed to the end of the seat plate 2. Two pulleys 13 are rotatably connected to the bottom surfaces at both ends of the base block 1. A support leg 14 is fixed to the bottom surface of the seat plate 2 away from the base block 1.

[0027] Example 3:

[0028] Please see Figure 1-3This is the third embodiment of the present invention, based on the above two embodiments. When using the present invention, the seat plate 2 is rotated to a horizontal position, at which point the clamping handle 10 passes through the through groove 7, and then the clamping handle 10 is rotated 90 degrees, so that the clamping handle 10 clamps the bottom of the support block 5. Then the backpack is placed on the seat plate 2, and the strap at the top of the backpack is hung on the hook 23. When not in use, the clamping handle 10 is rotated 90 degrees so that it no longer contacts the bottom surface of the support block 5, and the seat plate 2 can be folded to a vertical position for easy storage or individual carrying. When using the present invention, the seat plate 2 can be rotated to a horizontal position, and the clamping handle 10 is used to clamp the bottom surface of the support block 5, so that the position of the seat plate 2 is stable. When not in use, it can be folded to a vertical position, reducing the bottom area, making the pull rod base more portable and easier to store, and more convenient. At the same time, the height of the side plate 22 with the hook 23 can be changed, and the orientation of the side plate 22 can also be changed, making it easier to hang the straps at the top of different types of backpacks, making it more adaptable.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foldable trolley backpack base, comprising a base block (1), characterized in that: A base plate (2) is rotatably mounted on one side of the base block (1). A support plate (3) is horizontally fixed to the bottom surface of the base block (1) near the base plate (2). The bottom surface of the end of the base plate (2) contacts the top surface of the support plate (3). Two support blocks (5) are fixed to both sides of the support plate (3). A top groove (6) is opened on the top surface of the support block (5). The end of the top groove (6) away from the base block (1) is open. Two strip blocks (4) are fixed to both sides of the bottom surface of the base plate (2). The end of the block (4) is inserted into the top groove (6). The strip block (4) is fixed to the sleeve (8) near the bottom block (1). The bottom end of the sleeve (8) is rotatably provided with a rotating post (9). The bottom end of the rotating post (9) is fixed to a clamping handle (10). The bottom surface of the support block (5) is provided with a through groove (7). The through groove (7) is connected to the top groove (6). The rotating post (9) passes through the through groove (7). The two sides of the clamping handle (10) contact the bottom surface of the support block (5).

2. The foldable trolley backpack base according to claim 1, characterized in that: The sleeve (8) is rotatably connected to the shaft (29). The top end of the rotating column (9) is fixed to the bottom end of the shaft (29). Two rotating grooves (24) are opened on both sides of the shaft (29). Two arc-shaped locking blocks (25) are rotatably arranged in the two rotating grooves (24).

3. The foldable trolley backpack base according to claim 2, characterized in that: Four slots (26) are evenly opened on the inner side wall of the sleeve (8). The ends of the two arc-shaped blocks (25) are inserted into two of the slots (26). The sleeve post (27) is vertically fixed in the rotating groove (24). The arc-shaped blocks (25) rotate to engage with the sleeve post (27). A torsion spring (28) is provided at the rotatable connection between the sleeve post (27) and the rotating groove (24).

4. The foldable trolley backpack base according to claim 1, characterized in that: The bottom block (1) is fixedly connected to the top surface of the middle part of the tie rod seat (15), the tie rod seat (15) is vertically fixedly sleeved to the bottom end of the main tie rod (16), the top end of the main tie rod (16) has a sliding cavity (17) inside, and the sliding cavity (17) is vertically slidably sleeved to the sub-tie rod (18).

5. The foldable trolley backpack base according to claim 4, characterized in that: The top of the sub-pull rod (18) is fitted with a top sleeve (19), and a handle (20) is fixedly connected to the top sleeve (19). The horizontal cross-sections of the main pull rod (16) and the sub-pull rod (18) are both elliptical.

6. The foldable trolley backpack base according to claim 5, characterized in that: The main pull rod (16) is slidably sleeved with a sliding sleeve (21), the side wall of the sliding sleeve (21) is fixedly connected to a side plate (22), and two hooks (23) are fixedly connected to both sides of the side plate (22).

7. The foldable trolley backpack base according to claim 6, characterized in that: The first threaded sleeve (32) is fixedly connected to the side plate (22), the first threaded sleeve (32) is threadedly connected to the first hand-turning bolt (33), and the end of the first hand-turning bolt (33) contacts the surface of the main tie rod (16).

8. The foldable trolley backpack base according to claim 5, characterized in that: The sub-pull rod (18) has a groove (38) on its side wall. The top of the main pull rod (16) is horizontally fixed to a second threaded sleeve (34) near the groove (38). The second threaded sleeve (34) is threadedly connected to a second hand-turning bolt (35). The end of the second hand-turning bolt (35) contacts the side wall of the groove (38).

9. The foldable trolley backpack base according to claim 8, characterized in that: The top sleeve (19) is horizontally fixed to the third threaded sleeve (36) on the side near the groove (38), and the third threaded sleeve (36) is threadedly connected to the third hand-turning bolt (37), the end of the third hand-turning bolt (37) contacting the side wall of the groove (38).

10. The foldable trolley backpack base according to claim 1, characterized in that: Multiple hinge seats (30) are fixed to the side wall of the base block (1), and multiple hinge seats (30) are rotatably connected to multiple hinge blocks (31). Multiple hinge blocks (31) are fixed to the end of the seat plate (2). Two pulleys (13) are rotatably connected to the bottom surfaces of both ends of the base block (1). A support leg (14) is fixed to the bottom surface of the seat plate (2) away from the base block (1).

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