Trolley flat fold

Abstract

The utility model relates to the technical field of carts, and discloses a cart flat fold which comprises a cart frame and a carriage, the cart frame comprises a first support, a second support, two first folding rods and two second folding rods, the second support is located in the first support, and the first folding rods are located in the carriage. First shafts and two third shafts are fixedly connected to the two sides of the inner wall of the middle of the first support and the two sides of the inner wall of the lower end of the first support correspondingly, the second support is rotationally connected with the first shafts, and two second shafts are fixedly connected to the two sides of the inner wall of the lower end of the second support correspondingly. By arranging the stroller frame formed by assembling the first support, the second support, the first shielding rod and the second folding rod, the stroller frame can be folded and unfolded, the carriage is placed on the upper surface of the first folding rod and the upper surface of the second folding rod and located between the first support and the second support, and the carriage is matched with the moving unit to support the whole stroller. And when not in use, the folding chair can be folded, so that the occupied space is reduced, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carts, in particular to a flat-folding cart. Background Art

[0002] As a transport vehicle that is pushed and pulled by manpower, a handcart is widely used in life and production because of its simple operation, convenience of use, strong passability, and ability to be used in various complex environments.

[0003] The prior art has obvious beneficial effects, but still has shortcomings:

[0004] However, most of the existing trolleys have complex frame structures, large volumes, and troublesome maintenance. They are not foldable, which is not conducive to transporting materials in various environments and increases the difficulty of carrying and using. At the same time, they will take up a large space when not in use. Therefore, a trolley that can be folded flat is proposed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a flat-folding stroller, which is convenient for flat-folding and storage and easy to use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the cart is folded flat, including a cart frame and a cart box, the cart frame includes a first bracket, a second bracket, two first folding rods and two second folding rods, the second bracket is located in the first bracket, the first axis and the two third axes are fixedly connected on both sides of the middle inner wall and the lower inner wall of the first bracket respectively, the second bracket is rotatably connected to the first axis, the two second axes are fixedly connected on both sides of the inner wall of the lower end of the second bracket, one end of the two second folding rods is rotatably connected to the two second axes respectively, the adjacent sides of the two second folding rods are fixedly connected to the fourth axis, the two ends of the two first folding rods are rotatably connected to the two third axes and the two fourth axes respectively, a push rod unit is installed on the upper end of the second bracket, two rotating units are fixedly connected to the lower end outer wall of the first bracket, and the lower end of the rotating unit and the two ends of the lower part of the second bracket are installed with moving units, a baffle for supporting the first folding rod is fixedly connected between the upper surfaces of the two second folding rods and the adjacent ends of the first folding rod, and the cart box is placed on the upper surfaces of the first folding rod and the second folding rod and is located between the first bracket and the second bracket.

[0007] Preferably, the moving unit comprises a roller frame, the interior of the roller frame is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is rotatably connected with a moving roller, and the roller frame is fixedly connected to the rotating unit and the lower end of the second bracket.

[0008] Preferably, the rotating unit includes a mounting sleeve, two end plugs and a connecting bolt. The mounting sleeve is fixedly connected to the lower end outer wall of the first bracket. The two end plugs are movably inserted at the two ends of the mounting sleeve respectively. One end of the connecting bolt passes through the two end plugs and the mounting sleeve and is fixedly connected to the upper end surface of the roller frame.

[0009] Preferably, the rotating unit further comprises an elastic sleeve, which is movably sleeved on the outer wall of the connecting bolt, and the elastic sleeve is located between the end plug at the upper end of the mounting sleeve and the head portion at the upper end of the connecting bolt.

[0010] Preferably, two first reinforcing rods are fixedly connected between the two first folding rods, one of the first reinforcing rods close to the second folding rod is arranged corresponding to the baffle, and a second reinforcing rod is fixedly connected between the two second folding rods, and the second reinforcing rod is located on the inner wall of one end of the second folding rod away from the baffle.

[0011] Preferably, the push rod unit comprises a connecting sleeve and a rotating rod, the connecting sleeve is fixedly connected with a fifth shaft, one end of the rotating rod is rotatably connected to the fifth shaft, and the other end of the rotating rod is fixedly connected with a pull rod.

[0012] Preferably, a plurality of connecting straps for fixing the carriage are sewn at both ends of the carriage, and the connecting straps at both ends of the carriage are respectively wrapped around the upper outer walls of the first bracket and the second bracket, and the other ends of the connecting straps are bonded to the outer wall of the carriage by Velcro.

[0013] Preferably, the outer walls of the first shaft, the second shaft, the third shaft, the fourth shaft and the fifth shaft are all provided with retaining rings, and the retaining rings are located between the first bracket and the second bracket, between the first folding rod and the first bracket, between the second folding rod and the second bracket, between the first folding rod and the second bracket, and between the rotating rod and the connecting sleeve.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a cart frame which is assembled by a first bracket, a second bracket, a first shielding rod and a second folding rod, so that the cart frame can be folded and unfolded, the cart box is placed on the upper surfaces of the first folding rod and the second folding rod and is located between the first bracket and the second bracket, and cooperates with a moving unit to support the whole, which is convenient for storage and folding, easy to carry, and can be folded and put away when not in use to reduce occupied space and increase practicality.

[0016] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a detailed structural diagram of the push cart frame and push rod unit of the utility model;

[0019] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0020] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0021] Figure 5 It is a schematic diagram of the connection relationship structure between the first bracket, the second bracket, the first folding rod and the second folding rod of the utility model;

[0022] Figure 6 It is a schematic diagram of the detailed structure of the rotating unit and the cross-sectional structure of the mounting sleeve of the utility model;

[0023] Figure 7 It is a schematic diagram of the exploded structure of the rotating unit of the utility model.

[0024] In the figure: 1. cart frame; 11. first bracket; 12. second bracket; 13. first folding rod; 14. second folding rod; 15. baffle; 16. first axis; 17. second axis; 18. third axis; 19. fourth axis; 2. carriage; 21. connecting belt; 3. rotating unit; 31. mounting sleeve; 32. end plug; 33. connecting bolt; 34. elastic sleeve; 4. moving unit; 41. roller frame; 42. rotating shaft; 43. moving roller; 5. push rod unit; 51. connecting sleeve; 52. fifth axis; 53. rotating rod; 54. pulling rod; 6. second reinforcing rod; 7. retaining ring; 8. first reinforcing rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-7, including a cart frame 1 and a cart box 2, the cart frame 1 includes a first bracket 11, a second bracket 12, two first folding rods 13 and two second folding rods 14, the second bracket 12 is located in the first bracket 11, the first bracket 11 has both sides of the middle inner wall and both sides of the lower inner wall fixedly connected with a first shaft 16 and two third shafts 18, the second bracket 12 is rotatably connected to the first shaft 16, the lower inner wall of the second bracket 12 is fixedly connected to two second shafts 17, one end of the two second folding rods 14 is rotatably connected to the two second shafts 17, and the adjacent sides of the two second folding rods 14 are fixedly connected with a fourth shaft 19, the two ends of the two first folding rods 13 are rotatably connected to the two third shafts 18 and the two fourth shafts 19 respectively, a push rod unit 5 is installed at the upper end of the second bracket 12, and two rotating units 3 are fixedly connected to the outer wall of the lower end of the first bracket 11, and the lower end of the rotating unit 3 and the two ends of the lower part of the second bracket 12 are installed with a moving unit 4, and a baffle 15 for supporting the first folding rod 13 is fixedly connected between the upper surfaces of the two second folding rods 14 and the adjacent ends of the first folding rod 13, and the car box 2 is placed on the upper surfaces of the first folding rods 13 and the second folding rods 14 and is located between the first bracket 11 and the second bracket 12.

[0027] like Figure 1 , 2 As shown in , 4, and 5, the structure of the utility model is similar to the existing structure. The main improvement of the utility model is that the cart can be folded and stored flat, which is convenient for use. When the utility model is in use, the first bracket 11 and the second bracket 12 are rotated, and the first bracket 11 and the second bracket 12 are rotated along the first axis 16 as the axis, and the first bracket 11 and the second bracket 12 drive the first folding rod 13 and the second folding rod 14 to rotate. The first bracket 11 rotates with the first folding rod 13 through the third axis 18, and the second bracket 12 rotates with the second folding rod 14 through the second axis 17, so that the first folding rod 13 and the second folding rod 14 rotate through the fourth axis 19, so that the first bracket 11 and the second bracket 12 are rotated to an X shape, and the first folding rod 13 and the second folding rod 14 are rotated to be parallel. The baffle 15 at one end of the second folding rod 14 contacts the upper surface of one end of the first folding rod 13, thereby limiting the first folding rod 13 and the second folding rod 14, so that it cannot continue to rotate, thereby realizing the unfolding of the cart frame 1, placing the car box 2 on the upper surface of the first folding rod 13 and the second folding rod 14 and between the first bracket 11 and the second bracket 12, and the cart can be used. The mobile unit 4 supports the whole body for easy pushing. The car box 2 can be made of cloth material. When the cart frame 1 is folded, the car box 2 also needs to be taken out, and the car box 2 will be folded. When the cart frame 1 is unfolded for use, the car box 2 can be opened for use, which is convenient for folding and unfolding the whole body for use, so as to facilitate the carrying and use of the cart. When not in use, it can be folded and put away to reduce the occupied space and increase practicality.

[0028] like Figure 6 As shown, the mobile unit 4 includes a roller frame 41, the interior of the roller frame 41 is fixedly connected with a rotating shaft 42, the outer wall of the rotating shaft 42 is rotatably connected with a moving roller 43, the roller frame 41 is fixedly connected to the rotating unit 3 and the lower end of the second bracket 12, the roller frame 41 is respectively located at the four corners of the cart frame 1, and the cart frame 1 is supported by the moving roller 43 rotating through the rotating shaft 42 in the roller frame 41, so as to facilitate the movement of the cart, and when the cart frame 1 is folded, the roller frame 41 and the moving roller 43 will not cause any obstruction.

[0029] like Figure 2 , 6 As shown in , 7, the rotating unit 3 includes a mounting sleeve 31, two end plugs 32 and a connecting bolt 33. The mounting sleeve 31 is fixedly connected to the outer wall of the lower end of the first bracket 11, and the two end plugs 32 are movably inserted at the two ends of the mounting sleeve 31, and one end of the connecting bolt 33 passes through the two end plugs 32 and the mounting sleeve 31 and is fixedly connected to the upper end surface of the roller frame 41. By welding the mounting sleeve 31 to the outer wall of the lower end of the first bracket 11, the two end plugs 32 are respectively inserted into the upper and lower ends of the mounting sleeve 31, the connecting bolt 33 is passed through the two end plugs 32 and the mounting sleeve 31 and the roller frame 41 is welded, the connecting bolt 33 can rotate in the end plug 32 and the mounting sleeve 31, so that the roller frame 41 welded with the connecting bolt 33 can rotate, and the moving roller 43 in the roller frame 41 can turn the overall moving direction of the cart to facilitate movement, and the end plug 32 is used to limit the connecting bolt 33 so that it can only rotate to reduce shaking.

[0030] like Figure 7 As shown, the rotating unit 3 also includes an elastic sleeve 34, which is movably sleeved on the outer wall of the connecting bolt 33, and the elastic sleeve 34 is located between the upper end plug 32 of the mounting sleeve 31 and the upper end head of the connecting bolt 33. After the connecting bolt 33 passes through the two end plugs 32 and the mounting sleeve 31, the elastic sleeve 34 is sleeved on the outer wall of the connecting bolt 33, and the elastic sleeve 34 is located between the upper end head of the connecting bolt 33 and the adjacent movable sleeve, which can reduce the friction generated when the connecting bolt 33 rotates and is convenient to use.

[0031] like Figure 2 , 5As shown, two first reinforcing rods 8 are fixedly connected between the two first folding rods 13, one of the first reinforcing rods 8 close to the second folding rod 14 is arranged corresponding to the baffle 15, and a second reinforcing rod 6 is fixedly connected between the two second folding rods 14, and the second reinforcing rod 6 is located on the inner wall of one end of the second folding rod 14 away from the baffle 15. The first reinforcing rod 8 can increase the strength of the first folding rods 13, so that one of the first folding rods 13 rotates, and the other first folding rod 13 follows the rotation through the first reinforcing rod 8, so as to facilitate folding and unfolding. The second reinforcing rod 6 can improve the strength of the two second folding rods 14, and the first reinforcing rod 8, the second reinforcing rod 6 and the baffle 15 can also support the vehicle box 2. The overall structure is simple, high in strength, convenient to fold and unfold, and easy to use.

[0032] like Figure 2 , 3 As shown, the push rod unit 5 includes a connecting sleeve 51 and a rotating rod 53. The fifth shaft 52 is fixedly connected inside the connecting sleeve 51. One end of the rotating rod 53 is rotatably connected to the fifth shaft 52. The other end of the rotating rod 53 is fixedly connected to a pull rod 54. The rotating rod 53 is pulled by the pull rod 54. The rotating rod 53 can cooperate with the connecting sleeve 51 through the fifth shaft 52 to drive the cart to move as a whole. The angle of the rotating rod 53 can also be adjusted, which is convenient for pulling the cart to move.

[0033] like Figure 1 , 2 As shown, both ends of the carriage 2 are sewn with a plurality of connecting straps 21 for fixing it, and the connecting straps 21 at both ends of the carriage 2 are respectively wrapped around the upper outer walls of the first bracket 11 and the second bracket 12, and the other ends of the connecting straps 21 are bonded to the outer wall of the carriage 2 by Velcro. The carriage 2 is respectively wrapped around the outside of the first bracket 11 and the second bracket 12 by the connecting straps 21 on both sides thereof, and the outer ends of the connecting straps 21 are glued back to the outer wall of the carriage 2 by Velcro, thereby restricting the carriage 2 to facilitate placing items in the carriage 2. When the cart frame 1 is unfolded, the upper opening of the carriage 2 made of cloth material can be opened by the connecting straps 21 for easy use.

[0034] like Figure 3-5 As shown, the outer walls of the first shaft 16, the second shaft 17, the third shaft 18, the fourth shaft 19 and the fifth shaft 52 are all sleeved with a retaining ring 7, and the retaining ring 7 is located between the first bracket 11 and the second bracket 12, between the first folding rod 13 and the first bracket 11, between the second folding rod 14 and the second bracket 12, between the first folding rod 13 and the second bracket 12, and between the rotating rod 53 and the connecting sleeve 51. The retaining ring 7 can block the rotating rod 53 and the connecting sleeve 51, and block the unfolding and folding of multiple rotatable structures of the cart frame 1, thereby reducing friction, and blocking and restricting the movable structure, so that the movable structure can only rotate outside the axis without moving, thereby maintaining overall strength and stability.

[0035] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A foldable cart comprising a cart frame (1) and a cart box (2), characterized in that: The cart frame (1) comprises a first bracket (11), a second bracket (12), two first folding rods (13) and two second folding rods (14); the second bracket (12) is located inside the first bracket (11); both sides of the middle inner wall and both sides of the lower inner wall of the first bracket (11) are respectively fixedly connected with a first shaft (16) and two third shafts (18); the second bracket (12) is rotatably connected to the first shaft (16); both sides of the lower inner wall of the second bracket (12) are fixedly connected with two second shafts (17); one end of the two second folding rods (14) are respectively rotatably connected to the two second shafts (17); the adjacent sides of the two second folding rods (14) are fixedly connected with a fourth shaft (19); the two first folding rods (14) are respectively rotatably connected to the ... two third shafts (18) are fixedly connected with the second shafts (18); the second bracket (12) is rotatably connected to the first shaft (16); the second bracket (12) is rotatably connected to the first shaft (16); the second bracket (12) is rotatably connected to the first shaft (16); the second bracket (12) is rotatably connected to the second shafts (17); the second bracket (12) is rotatably connected to the second shafts (17); the second bracket (12) is rotatably connected to the second shafts (17); the second bracket (1 The two ends of the folding rod (13) are rotatably connected to the two third shafts (18) and the two fourth shafts (19), respectively; a push rod unit (5) is installed at the upper end of the second bracket (12); two rotating units (3) are fixedly connected to the outer wall of the lower end of the first bracket (11); a moving unit (4) is installed at the lower end of the rotating unit (3) and the two ends of the lower part of the second bracket (12); a baffle (15) for supporting the first folding rod (13) is fixedly connected between the upper surfaces of the two second folding rods (14) and the adjacent ends of the first folding rod (13); and the car box (2) is placed on the upper surfaces of the first folding rod (13) and the second folding rod (14) and is located between the first bracket (11) and the second bracket (12).

2. The flat-folding stroller according to claim 1, characterized in that: The moving unit (4) comprises a roller frame (41), the interior of the roller frame (41) is fixedly connected to a rotating shaft (42), the outer wall of the rotating shaft (42) is rotatably connected to a moving roller (43), and the roller frame (41) is fixedly connected to the rotating unit (3) and the lower end of the second bracket (12).

3. The flat-folding stroller according to claim 2, characterized in that: The rotating unit (3) comprises a mounting sleeve (31), two end plugs (32) and a connecting bolt (33); the mounting sleeve (31) is fixedly connected to the outer wall of the lower end of the first bracket (11); the two end plugs (32) are movably plugged at the two ends of the mounting sleeve (31); one end of the connecting bolt (33) passes through the two end plugs (32) and the mounting sleeve (31) and is fixedly connected to the upper end surface of the roller frame (41).

4. The flat-folding stroller according to claim 3, characterized in that: The rotating unit (3) also includes an elastic sleeve (34), which is movably sleeved on the outer wall of the connecting bolt (33), and the elastic sleeve (34) is located between the upper end plug (32) of the installation sleeve (31) and the upper end head of the connecting bolt (33).

5. The flat-folding stroller according to claim 1, characterized in that: Two first reinforcing rods (8) are fixedly connected between the two first folding rods (13), one of the first reinforcing rods (8) close to the second folding rod (14) is arranged corresponding to the baffle (15), and a second reinforcing rod (6) is fixedly connected between the two second folding rods (14), and the second reinforcing rod (6) is located on the inner wall of one end of the second folding rod (14) away from the baffle (15).

6. The flat-folding stroller according to claim 1, characterized in that: The push rod unit (5) comprises a connecting sleeve (51) and a rotating rod (53); a fifth shaft (52) is fixedly connected inside the connecting sleeve (51); one end of the rotating rod (53) is rotatably connected to the fifth shaft (52); and the other end of the rotating rod (53) is fixedly connected to a pull rod (54).

7. The flat-folding stroller according to claim 1, characterized in that: A plurality of connecting straps (21) for fixing the vehicle box (2) are sewn at both ends of the vehicle box (2); the connecting straps (21) at both ends of the vehicle box (2) are respectively wound around the upper outer walls of the first bracket (11) and the second bracket (12); and the other ends of the connecting straps (21) are bonded to the outer wall of the vehicle box (2) by means of Velcro.

8. The flat-folding stroller according to claim 6, characterized in that: The outer walls of the first shaft (16), the second shaft (17), the third shaft (18), the fourth shaft (19) and the fifth shaft (52) are all sleeved with retaining rings (7), and the plurality of retaining rings (7) are respectively located between the first bracket (11) and the second bracket (12), between the first folding rod (13) and the first bracket (11), between the second folding rod (14) and the second bracket (12), between the first folding rod (13) and the second bracket (12), and between the rotating rod (53) and the connecting sleeve (51).

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