A foldable shopping cart and a folding state locking mechanism thereof

Abstract

The utility model belongs to the technical field of shopping carts, and particularly refers to a folding state locking mechanism of a folding shopping cart, which is used to lock the first box board and the second box board after folding, and includes: a locking member, which is used to be rotatably arranged on the first box board; a locking block, which is used to be fixed on the second box board; an annular locking boss is provided on the locking member, and the locking boss has a first notch groove, and the first notch groove is used to allow the locking block to enter the locking boss, and the locking boss and the locking block are relatively limited by the rotation of the locking member. This patent can realize the locking of the folding box body after folding only by rotating the locking member. Compared with the existing buckle structure, the locking member in this patent is not easy to fall off after it is locked, and the overall structure is hidden in the locking member, which is not affected by the outside world, and the overall structure is more stable, thereby increasing its service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of shopping carts, in particular to a folding shopping cart and a folding state locking mechanism thereof. Background Art

[0002] Chinese utility model 2020226924755 discloses a foldable storage box, which includes a box body; the upper end of the box body is open, and the box body includes a first fixed box panel, a first folding side box panel, a second folding side box panel, a second fixed box panel and a bottom box panel; one side of the first folding side box panel is hinged to the first side of the first fixed box panel, and the other side of the first folding side box panel is hinged to the first side of the second fixed box panel; one side of the second folding side box panel is hinged to the second side of the first fixed box panel, and the other side of the second folding side box panel is hinged to the second side of the second fixed box panel; the first folding side box panel and the second folding side box panel are folded toward each other; the folded first folding side box panel, the folded second folding side box panel and the first fixed box panel form a first accommodating space for accommodating a box cover.

[0003] In this patent, the first fixed box plate and the second fixed box plate are positioned by a rotatable buckle after being unfolded. The buckle is prone to aging and breaking during the rotation process. Moreover, the positioning buckle structure on the buckle is exposed to the outside, which is easily affected by external factors, resulting in it being unable to be used normally, affecting the service life of the product. Summary of the invention

[0004] The utility model aims to provide a folding shopping cart with a more stable structure and a folding state locking mechanism thereof.

[0005] The purpose of the utility model is achieved in this way:

[0006] A folded state locking mechanism, used to lock a first box board and a second box board after folding, comprising:

[0007] A locking member, used for being rotatably arranged on the first box plate;

[0008] A locking block, used for fixing on the second box plate;

[0009] The locking member is provided with an annular locking boss, and the locking boss has a first notch groove, the first notch groove is used to allow the locking block to enter the locking boss, and the locking boss and the locking block are relatively limited by the rotation of the locking member.

[0010] Furthermore, a first engaging boss is provided on the locking boss on one side of the first notch groove; a second engaging boss is provided on the locking block; when the locking boss is locked with the locking block, the first engaging boss and the second engaging boss are relatively limited.

[0011] Furthermore, a protection boss is provided on the locking member, and the protection boss is arranged around the locking boss, and a second notch groove opposite to the first notch groove is provided on the protection boss.

[0012] Furthermore, it also includes a rotating seat for being set on the first box plate, and the locking piece is rotatably set on the rotating seat; a positioning boss is provided on the rotating seat, and a positioning notch is provided on the positioning boss; the locking piece is provided with a positioning sheet located in the positioning notch, which is used to abut against the positioning boss when the locking piece rotates to limit the rotation of the locking piece.

[0013] Furthermore, the included angle of the positioning notch groove is 45-135 degrees.

[0014] Furthermore, a transfer hole is provided in the rotating seat, an annular rotating boss is provided in the locking member, a limit head is provided at the end of the rotating boss, a fastener connected to the locking member, and an annular groove for accommodating the end of the rotating boss is provided in the limit head; the rotating boss is used to be arranged in the transfer hole to realize the rotational cooperation between the locking member and the rotating seat.

[0015] Furthermore, the locking block is arc-shaped, and its size is matched with the size of the first notch groove.

[0016] A foldable shopping cart comprises a foldable box body, wherein the foldable box body comprises a first box board and a second box board and a foldable assembly located between the first box board and the second box board; and further comprises a folding state locking mechanism as described above.

[0017] Furthermore, the first box plate and the second box plate are provided with an outer ring wall, and a receiving cavity for receiving the folding assembly in the folded state is formed in the outer ring wall; the locking member and the locking block are respectively provided on the outer ring walls of the first box plate and the second box plate.

[0018] Furthermore, the folding assembly includes a first folding plate and a second folding plate which are rotatably connected to each other, and the first folding plate and the second folding plate are rotatably connected to the first box plate and the second box plate respectively.

[0019] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0020] This patent can lock the foldable box after folding only by rotating the locking piece. Compared with the existing buckle structure, the locking piece in this patent is not easy to fall off after it is locked, and the overall structure is hidden in the locking piece and is not affected by the outside world. The overall structure is more stable, thereby increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 yes Figure 1 Schematic diagram of the cross section at the middle rotating seat.

[0023] Figure 3 It is a schematic diagram of the structure when the folding box is in the unfolded state.

[0024] Figure 4 It is a structural schematic diagram of the folding box in the folded state.

[0025] Figure 5 It is a schematic diagram of the disassembly of the locking parts when the folding box is in the folded state.

[0026] Figure 6 It is a schematic diagram of the structure of the locking member.

[0027] Figure 7 It is a cross-sectional schematic diagram when the locking member is locked.

[0028] Figure 8 It is a schematic cross-sectional view when the locking member is unlocked.

[0029] The meaning of the symbols in the figure:

[0030] 1. Folding box body; 11. First box board; 12. Second box board; 13. Outer ring wall; 14. Accommodating cavity;

[0031] 2. Folding assembly; 21. First folding plate; 22. Second folding plate;

[0032] 3. Rotating seat; 31. Positioning boss; 311. Positioning notch groove;

[0033] 4. Locking member; 41. Locking boss; 42. First engaging boss; 43. First notch groove; 44. Protective boss; 441. Second notch groove; 45. Adapter hole; 47. Positioning piece; 48. Rotating boss; 481. Limiting head; 482. Fastener; 483. Annular slot;

[0034] 5. Locking block; 51. Second engaging boss; 6. Roller; 7. Pull rod. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with specific embodiments:

[0036] A foldable shopping cart and a folding state locking mechanism thereof, such as Figure 1 As shown, the foldable shopping cart described in this patent is made of plastic material, which includes a foldable box body 1, a pull rod 7 is provided on the foldable box body 1, and a roller 6 is provided at the bottom of the foldable box body 1. The entire foldable box body 1 is pulled by the pull rod 7, and the foldable box body 1 is rolled by the roller 6 to cooperate with the pull rod 7 to realize the movement of the shopping cart in this patent.

[0037] The folding box body 1 includes a first box board 11 and a second box board 12, and a folding assembly 2 is disposed between the first box board 11 and the second box board 12. Figure 3 As shown, in this embodiment, the folding assembly 2 includes a first folding plate 21 and a second folding plate 22 which are rotatably connected to each other. The first folding plate 21 and the second folding plate 22 are rotatably connected to the first box plate 11 and the second box plate 12 respectively. Figure 3 , 4 As shown, the first folding plate 21, the second folding plate 22, the first box plate 11 and the second box plate 12 are connected to each other by hinged connection, and they are connected in sequence to form a square structure. The first folding plate 21, the second folding plate 22, the first box plate 11 and the second box plate 12 are all in a direction, and an outer annular wall 13 is formed on the outer edge of the first box plate 11 and the second box plate 12. The outer annular wall 13 is integrally formed on the first box plate 11 and the second box plate 12 during injection molding of the first box plate 11 and the second box plate 12; a receiving cavity 14 for receiving the folding component 2 in the folded state is formed in the outer annular wall 13, that is, when the folding component 2 is in the folded state, the first folding plate 21 and the second folding plate 22 are folded inwards respectively into the receiving cavity 14, and the end surfaces of the first box plate 11 and the second box plate 12 are abutted against each other to complete the folding, that is, as shown in FIG. Figure 4 , 5 Status shown.

[0038] After the folding is completed, the locking member 4 needs to be used to maintain the folded state. Figure 1-3 As shown, a rotating seat 3 is provided on the first box plate 11, and a locking member 4 is rotatably connected to the rotating seat 3. A locking block 5 is provided on the second box plate 12, and a locking structure is provided between the locking member 4 and the locking block 5 for locking the two by rotating the locking member 4.

[0039] like Figure 2As shown, the rotating seat 3 is provided with an adapter hole 45, the locking member 4 is provided with an annular rotating boss 48, the end of the rotating boss 48 is provided with a limit head 481, the limit head 481 is provided with a fastener 482 connected to the locking member 4, and an annular groove 483 for accommodating the end of the rotating boss 48; the rotating boss 48 is used to be arranged in the adapter hole 45 to achieve the rotational cooperation between the locking member 4 and the rotating seat 3. In this patent, the fastener 482 is a screw, the outer edge of the limit head 481 abuts against the outer edge of the adapter hole 45 of the rotating seat 3 for limiting, and when the rotating boss 48 is inserted into the adapter hole 45, the fastener 482 sequentially passes through the limit head 481 and the rotating boss 48 to connect the two, and the rotating boss 48 is located in the adapter hole 45 as a rotating shaft to achieve rotation. Generally, a threaded hole connected to the fastener 482 is provided in the rotating boss 48, and the screw is connected to the rotating boss 48 through the threaded hole to achieve fixation; when the rotating boss 48 is connected to the limit head 481, the end of the rotating boss 48 will also be inserted into the annular groove 483 to achieve positioning and fixation.

[0040] Combination Figure 3-5 As shown, the locking member 4 is circular, and a ring-shaped locking boss 41 is provided in the locking member 4. Specifically, the locking boss 41 is arranged around the rotating boss 48. The locking boss 41 has a first notch groove 43, and a first engaging boss 42 is provided on the locking boss 41 on one side of the first notch groove 43. The locking block 5 is arc-shaped, and a second engaging boss 51 is formed on the arc-shaped locking block 5. Specifically, the first engaging boss 42 is vertically arranged on the top of the locking boss 41, and the second engaging boss 51 is vertically arranged on the top of the locking block 5, and the size of the locking block 5 is adapted to the size of the first notch groove 43.

[0041] When the folding assembly 2 enters the folding state so that the first box board 11 and the second box board 12 are close to each other, the locking block 5 enters the locking member 4 through the first notch groove 43. At this time, the locking block 5 and the locking boss 41 are adjacently staggered. At this time, the second engaging boss 51 on the locking block 5 and the first engaging boss 42 on the locking boss 41 are engaged with each other up and down to achieve locking by rotating the locking member 4. In summary, the present invention can achieve locking of the folding box body 1 after folding only by rotating the locking member 4. Compared with the existing buckle structure, the locking member 4 in the present invention is not easy to fall off after it is locked, and the overall structure is hidden in the locking member 4, which is not affected by the outside world. The overall structure is more stable, thereby increasing its service life.

[0042] Furthermore, the rotating seat 3 is provided with a positioning boss 31, the positioning boss 31 is provided with a positioning notch 311, and the locking member 4 is provided with a positioning piece 47 located in the positioning notch 311, which is used to abut against the positioning boss 31 when the locking member 4 rotates to limit the rotation of the locking member 4. Figure 6 , 7 As shown in Figures 8 and 9, the positioning piece 47 is a square piece provided on the locking boss 41, which rotates with the rotation of the rotating seat 3. In this embodiment, the angle of the positioning notch 311 is 45-135 degrees, preferably 90 degrees; the movement space of the positioning piece 47 is limited by this limitation, so that the maximum rotation angle of the locking member 4 is limited to 90 degrees, preventing the user from turning the locking member 4 too far and affecting the normal locking of the locking member 4.

[0043] Furthermore, the locking member 4 is provided with a protective boss 44, which surrounds the locking boss 41 and is provided with a second notch 441 opposite to the first notch 43. The entire locking boss 41 is enclosed in the locking member 4 by the protective boss 44 to prevent the locking structure thereon from being exposed and damaged by external influences.

[0044] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

[0045] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0046] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0047] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. A folded state locking mechanism for locking a first box board (11) and a second box board (12) after folding, characterized in that: include: A locking member (4) configured to be rotatably disposed on the first box plate (11); A locking block (5) used for being fixed on the second box plate (12); The locking member (4) is provided with an annular locking boss (41), and the locking boss (41) has a first notch groove (43). The first notch groove (43) is used to allow the locking block (5) to enter the locking boss (41), and the locking boss (41) and the locking block (5) are relatively limited by the rotation of the locking member (4).

2. A folded state locking mechanism according to claim 1, characterized in that: A first engaging boss (42) is provided on the locking boss (41) on one side of the first notch groove (43); a second engaging boss (51) is provided on the locking block (5); when the locking boss (41) is locked with the locking block (5), the first engaging boss (42) and the second engaging boss (51) are relatively limited.

3. A folding state locking mechanism according to claim 1, characterized in that: The locking member (4) is also provided with a protection boss (44), which is arranged around the locking boss (41), and a second notch groove (441) opposite to the first notch groove (43) is provided on the protection boss (44).

4. A folded state locking mechanism according to claim 1, characterized in that: The invention also comprises a rotating seat (3) for being arranged on the first box plate (11), and the locking member (4) is rotatably arranged on the rotating seat (3); a positioning boss (31) is provided on the rotating seat (3), and a positioning notch groove (311) is provided on the positioning boss (31); and a positioning sheet (47) located in the positioning notch groove (311) is provided on the locking member (4) for abutting against the positioning boss (31) when the locking member (4) rotates to limit the rotation of the locking member (4).

5. A folded state locking mechanism according to claim 4, characterized in that: The included angle of the positioning notch groove (311) is 45-135 degrees.

6. A folded state locking mechanism according to claim 4, characterized in that: The rotating seat (3) is provided with an adapter hole (45), the locking member (4) is provided with an annular rotating boss (48), the end of the rotating boss (48) is provided with a limiting head (481), the limiting head (481) is provided with a fastener (482) connected to the locking member (4), and an annular groove (483) for accommodating the end of the rotating boss (48); the rotating boss (48) is used to be arranged in the adapter hole (45) to realize the rotational cooperation between the locking member (4) and the rotating seat (3).

7. A folding state locking mechanism according to claim 1, characterized in that: The locking block (5) is arc-shaped, and its size is matched with the size of the first notch groove (43).

8. A foldable shopping cart, comprising a foldable box body (1), wherein the foldable box body (1) comprises a first box board (11) and a second box board (12) and a foldable assembly located between the first box board (11) and the second box board (12); characterized in that: It also includes a folded state locking mechanism as described in any one of claims 1-7.

9. A foldable shopping cart according to claim 8, characterized in that: The first box plate (11) and the second box plate (12) are provided with an outer annular wall (13), and a receiving cavity (14) is formed inside the outer annular wall (13) for receiving the folding assembly (2) in a folded state; the locking element (4) and the locking block (5) are respectively provided on the outer annular wall (13) of the first box plate (11) and the second box plate (12).

10. A foldable shopping cart according to claim 8, characterized in that: The folding assembly (2) comprises a first folding plate (21) and a second folding plate (22) which are rotatably connected to each other. The first folding plate (21) and the second folding plate (22) are rotatably connected to the first box plate (11) and the second box plate (12) respectively.

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