Box body structure and trolley with same

Abstract

A box body structure comprises a lower shell and an upper cover hinged to the rear side of the lower shell, and further comprises an opening and closing structure which comprises a connecting rod and a sliding groove base, and the sliding groove base is arranged on the lower shell; the upper end of the connecting rod is hinged with the upper cover, and the lower end is in front-back sliding connection with the chute seat through a sliding shaft; the sliding groove base comprises an upper sliding way and a lower sliding way. The upper sliding way communicates with the two ends of the lower sliding way. The positioning recesses are located on the lower slide way, when the slide shaft slides along the lower slide way, the slide shaft can be positioned to different positioning recesses so that the upper cover can be opened to different angles, and when the slide shaft returns along the upper slide way, the upper cover covers the lower shell. The box body structure is more stable in uncovering and more convenient to use. In addition, the utility cart with the box body structure is further provided.

Description

Technical Field

[0001] This utility model relates to the field of storage tools, specifically to a box structure and a trolley having the box structure. Background Technology

[0002] A box structure with an adjustable opening angle has recently emerged, as disclosed in Chinese invention patent application CN103587799A. This box structure is as follows: Figure 1 and Figure 2 As shown, the box includes a lower shell 1a and an upper cover 2a. One side wall of the lower shell 1a has a through groove 3a and multiple grooves 4a communicating with the through groove 3a. A connecting rod 6a with a flange 5a is placed in the through groove 3a, and the flange 5a can be confined within the groove 4a. One end of the connecting rod 6a is connected to a handwheel 7a, and the other end is connected to a cam 8a. The handwheel 7a is located outside the lower shell 1a, and the cam 8a is located inside the lower shell 1a. The cam 8a has a flat side surface. The working principle of this box structure is as follows: When the handwheel 7a is rotated, making the flat side surface of the cam 8a flush with the top surface of the lower shell 1a, the upper cover 2a closes the lower shell 1a. When the cam 8a is rotated so that its curved surface abuts against the lower shell 1a, the upper cover 2a gradually opens. When the flange 5a of the connecting rod 6a is placed in different grooves 4a, the opening angle of the upper cover 2a is different. This box structure adopts an adjustable-angle opening method, making it more flexible to use.

[0003] However, the existing box structure still has the following technical problems: the lower shell 1a and the upper cover 2a are not connected together, which makes the opening unstable; when adjusting the opening angle, it is necessary not only to rotate the handwheel 7a and distinguish the flat side and curved part of the cam 8a, but also to align the flange 5a and the groove 4a, which is not convenient to use. If the lower shell 1a has opening and closing structures on both sides, it requires two hands to operate, which is even more inconvenient to use. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and propose a box structure that makes opening the lid more stable and easier to use; it also proposes a trolley with the box structure to make opening the lid more stable and easier to use.

[0005] Compared with the prior art, this utility model proposes a box structure, including a lower shell and an upper cover hinged to the rear side of the lower shell, and also includes...

[0006] The opening and closing structure includes a connecting rod and a sliding seat, the sliding seat being disposed on the lower shell; the upper end of the connecting rod is hinged to the upper cover, and the lower end is slidably connected to the sliding seat via a sliding shaft; the sliding seat includes an upper slide rail and a lower slide rail, the upper slide rail and the lower slide rail being connected at both ends;

[0007] The positioning recess is provided in one or more and located on the lower slide. When the slide shaft slides along the lower slide, it can be positioned to different positioning recesses to open the upper cover to different angles. When the slide shaft returns along the upper slide, the upper cover closes the lower shell.

[0008] The working principle of the box structure of this utility model is as follows:

[0009] Assuming the initial state is that the top cover is closed on the bottom shell, the sliding shaft at the lower end of the connecting rod is located at the front end of the lower slide track. When the top cover is flipped upward, the hinge angle between the upper end of the connecting rod and the top cover changes, and the sliding shaft at the lower end of the connecting rod slides backward along the lower slide track. When the sliding shaft at the lower end of the connecting rod is positioned in different positioning recesses, the top cover can be positioned at different opening angles. When the sliding shaft enters the upper slide track from the rear end of the lower slide track, the top cover can be closed. During the closing process of the top cover, the sliding shaft at the lower end of the connecting rod slides forward along the upper slide track and returns to the front end of the lower slide track.

[0010] Compared with the prior art, the present invention has the following advantages after adopting the above structure:

[0011] The box structure of this utility model utilizes a connecting rod that is hinged to the upper cover and slidably connected to the lower shell to achieve opening and closing. Since the connecting rod connects the upper cover and the lower shell together, the opening of the cover is more stable. In use, simply flip the upper cover to adjust the opening angle, making it more convenient to use.

[0012] Preferably, two opening and closing structures are provided and located on the left and right sides of the lower shell. This arrangement ensures that both the left and right sides of the lower shell are connected to the upper cover and equipped with opening and closing structures, further stabilizing the opening and closing of the cover.

[0013] Preferably, a switching mechanism is also included, which is disposed between the upper end of the connecting rod and the upper cover, for switching the lower end of the connecting rod from the lower sliding track to the upper sliding track when the upper cover is flipped to the maximum set angle. This arrangement can limit the maximum flipping angle of the upper cover, and automatically switch the lower end of the connecting rod to the upper sliding track when the upper cover is flipped to the maximum set angle.

[0014] Preferably, the switching mechanism includes a limiting seat disposed inside the upper cover, and the upper end of the connecting rod is rotatably mounted within the limiting seat. When the upper cover is flipped to the maximum set angle, the rear side of the limiting seat abuts against the upper end of the connecting rod, causing the connecting rod to switch from the lower slide track to the upper slide track through elastic deformation. This switching mechanism is not only simple in structure but also facilitates the hinged connection between the connecting rod and the upper cover.

[0015] Preferably, the upper end of the connecting rod is provided with a spring piece, and one of the limiting seat and the spring piece is provided with a shaft hole, while the other is provided with a rotating shaft that mates with the shaft hole. The limiting seat is also provided with a clearance space to allow the spring piece to deform and pass through. This arrangement allows the rotating shaft to be smoothly installed into the shaft hole through deformation of the spring piece.

[0016] Preferably, the front side of the limiting seat is provided with an opening, through which the upper end of the connecting rod is installed into the limiting seat. This arrangement facilitates the installation of the upper end of the connecting rod into the limiting seat through the opening.

[0017] Preferably, an anti-detachment component is also included, which is installed on the slide seat, with the lower end of the connecting rod sandwiched between the anti-detachment component and the slide seat. The anti-detachment component prevents the sliding shaft of the connecting rod from falling off the slide seat, making the sliding connection between the lower end of the connecting rod and the slide seat more reliable.

[0018] Preferably, the positioning recess is approximately V-shaped, with a vertical front section and a sloping rear section, connected by a curved surface. The vertical front section makes the positioning of the slide shaft more reliable, preventing it from returning to the previous positioning recess. The sloping rear section makes it easier for the slide shaft to slide into the next positioning recess when the top cover is flipped upwards. The curved surface in the middle connects the two sections, making the sliding of the slide shaft smoother.

[0019] Preferably, the slide seat is disposed on the inner side wall of the lower shell. This arrangement allows the slide seat to be hidden inside the lower shell, resulting in a simpler and more compact structure.

[0020] Compared with the prior art, the present invention proposes a trolley, including a frame and a roller assembly disposed at the bottom of the frame, and the frame is also provided with the aforementioned box structure.

[0021] Compared with the prior art, the present invention has the following advantages after adopting the above structure:

[0022] This utility model trolley has the above-mentioned box structure. The box structure uses a connecting rod to hinge the upper cover and slide the lower shell to achieve opening and closing. Since the connecting rod connects the upper cover and the lower shell together, the opening of the cover is more stable. When in use, you only need to flip the upper cover to adjust the opening angle of the upper cover, making it more convenient to use. Attached image description:

[0023] Figure 1 This is a three-dimensional schematic diagram of the existing box structure;

[0024] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0025] Figure 3 This is a three-dimensional schematic diagram of the box structure in Example 1;

[0026] Figure 4 This is an exploded view of the box structure in Example 1;

[0027] Figure 5 This is a schematic diagram showing the fit between the lower end of the connecting rod and the slide seat in Embodiment 1;

[0028] Figure 6 This is a schematic diagram showing the fit between the upper end of the connecting rod and the limiting seat in Embodiment 1;

[0029] Figure 7 This is a schematic diagram of the slide seat in Embodiment 1;

[0030] Figure 8 This is a three-dimensional schematic diagram of the trolley in Example 2;

[0031] In the existing technical drawings: 1a-lower shell, 2a-upper cover, 3a-through groove, 4a-groove, 5a-flange, 6a-connecting rod, 7a-handwheel, 8a-cam;

[0032] In the figures of this utility model: 1-lower shell, 2-upper cover, 3-connecting rod, 4-sliding shaft, 5-sliding groove seat, 6-upper slide, 7-lower slide, 8-positioning recess, 9-switching mechanism, 10-anti-detachment component, 11-limiting seat, 12-opening, 13-shaft hole, 14-spring piece, 15-rotating shaft, 16-avoidance space, 17-curved surface, 18-sloping surface, 19-handle, 20-box structure, 21-frame, 22-roller assembly, 23-vertical surface. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Example 1:

[0035] like Figure 3-7 As shown, this embodiment provides a box structure, including a lower shell 1 and an upper cover 2 hinged to the rear side of the lower shell 1, and also includes...

[0036] The opening and closing structure includes a connecting rod 3 and a sliding seat 5, the sliding seat 5 being disposed on the lower shell 1; the upper end of the connecting rod 3 is hinged to the upper cover 2, and the lower end is slidably connected to the sliding seat 5 through a sliding shaft 4; the sliding seat 5 includes an upper slide rail 6 and a lower slide rail 7, the upper slide rail 6 and the lower slide rail 7 being connected at both ends.

[0037] Positioning recesses 8 are provided in one or more and located on the lower slide 7. When the slide shaft 4 slides along the lower slide 7, it can be positioned in different positioning recesses 8 so that the upper cover 2 opens to different angles. When the slide shaft 4 returns along the upper slide 6, the upper cover 2 closes the lower shell 1.

[0038] In this embodiment, up, down, left, right, front, and back are defined as follows: Figure 3As the standard.

[0039] In this embodiment, the box structure utilizes a connecting rod 3 to hinge the upper cover 2 and slide the lower shell 1 to achieve opening and closing. Since the connecting rod 3 connects the upper cover 2 and the lower shell 1 together, the opening of the cover is more stable. When in use, simply flip the upper cover 2 to adjust the opening angle of the upper cover 2, making it more convenient to use.

[0040] Two opening and closing mechanisms are provided and located on the left and right sides of the lower shell 1. This arrangement ensures that both the left and right sides of the lower shell 1 are connected to the upper cover 2 and equipped with opening and closing mechanisms, further stabilizing the opening and closing of the cover.

[0041] It also includes a switching mechanism 9, which is disposed between the upper end of the connecting rod 3 and the upper cover 2, and is used to switch the lower end of the connecting rod 3 from the lower slide rail 7 to the upper slide rail 6 when the upper cover 2 is flipped to the maximum set angle. This setting can limit the maximum flipping angle of the upper cover 2, and when the upper cover 2 is flipped to the maximum set angle, the lower end of the connecting rod 3 automatically switches to the upper slide rail 6.

[0042] The switching mechanism 9 includes a limiting seat 11 disposed inside the upper cover 2, and the upper end of the connecting rod 3 is rotatably mounted inside the limiting seat 11. When the upper cover 2 is flipped to the maximum set angle, the rear side of the limiting seat 11 abuts against the upper end of the connecting rod 3, causing the connecting rod 3 to switch from the lower slide 7 to the upper slide 6 through elastic deformation. This switching mechanism 9 is not only simple in structure, but also facilitates the hinged structure between the connecting rod 3 and the upper cover 2.

[0043] The upper end of the connecting rod 3 is provided with a spring piece 14. One of the limiting seat 11 and the spring piece 14 is provided with a shaft hole 13, and the other is provided with a rotating shaft 15 that mates with the shaft hole 13. The limiting seat 11 also has a clearance space 16 for the spring piece 14 to deform and pass through. In this embodiment, the shaft hole 13 is located on the right side of the limiting seat 11. Grooves are provided on both the left and right sides of the limiting seat 11 at positions corresponding to the shaft hole 13, forming the clearance space 16 between them. The spring piece 14 is formed by cutting the wall thickness of the upper end of the connecting rod 3 with an inverted U-shaped cutting line. The rotating shaft 15 is located on the right side of the spring piece 14. This arrangement allows the rotating shaft 15 to be smoothly installed into the shaft hole 13 through deformation of the spring piece 14.

[0044] An opening 12 is provided on the front side of the limiting seat 11, and the upper end of the connecting rod 3 is installed into the limiting seat 11 through the opening 12. This arrangement facilitates the installation of the upper end of the connecting rod 3 into the limiting seat 11 through the opening 12.

[0045] It also includes an anti-detachment component 10, which is installed on the slide seat 5, with the lower end of the connecting rod 3 clamped between the anti-detachment component 10 and the slide seat 5. The anti-detachment component 10 prevents the sliding shaft 4 of the connecting rod 3 from falling off the slide seat 5, making the sliding connection between the lower end of the connecting rod 3 and the slide seat 5 more reliable.

[0046] The anti-detachment component 10 is detachably mounted on the slide seat 5 at both ends. In this embodiment, the detachable structure is a snap-fit ​​structure, which can be achieved using existing technology. The detachable structure of the anti-detachment component 10 facilitates the installation of the sliding shaft 4 of the connecting rod 3 into the slide seat 5 first.

[0047] The positioning recess 8 is roughly V-shaped, with a vertical surface 23 at the front and an inclined surface 18 at the rear. The vertical surface 23 and the inclined surface 18 are connected by a curved surface 17. The vertical surface 23 at the front makes the positioning of the slide shaft 4 more reliable and prevents it from returning to the previous positioning recess 8. The inclined surface 18 at the rear makes it easier for the slide shaft 4 to slide into the next positioning recess 8 when the upper cover 2 is flipped upward. The curved surface 17 in the middle makes the sliding of the slide shaft 4 smoother.

[0048] The sliding seat 5 is disposed on the inner side wall of the lower shell 1; in this embodiment, two sliding seats 5 are disposed on the left and right inner side walls of the lower shell 1 respectively. This arrangement allows the sliding seat 5 to be hidden inside the lower shell 1, resulting in a simpler and more compact structure.

[0049] A handle 19 is provided on the front side of the top cover 2. This design facilitates flipping the top cover 2.

[0050] The working principle of the box structure in this embodiment is as follows:

[0051] Assuming the initial state is that the upper cover 2 is closed on the lower shell 1, the sliding shaft 4 at the lower end of the connecting rod 3 is located at the front end of the lower slide 7. Pulling up the handle 19 causes the upper cover 2 to flip, changing the hinge angle between the upper end of the connecting rod 3 and the upper cover 2, and the sliding shaft 4 at the lower end of the connecting rod 3 slides backward along the lower slide 7. When the sliding shaft 4 at the lower end of the connecting rod 3 is positioned in different positioning recesses 8, the upper cover 2 can be positioned at different opening angles. When the upper cover 2 flips to the maximum set angle, the rear side of the limiting seat 11 abuts against the upper end of the connecting rod 3, causing the connecting rod 3 to switch from the lower slide 7 to the upper slide 6 through elastic deformation. At this time, the upper cover 2 can be closed. During the closing process of the upper cover 2, the sliding shaft 4 at the lower end of the connecting rod 3 slides forward along the upper slide 6 and returns to the front end of the lower slide 7.

[0052] Example 2:

[0053] like Figure 8 As shown, and in combination Figure 3-7 This embodiment provides a trolley, including a frame 21 and a roller assembly 22 disposed at the bottom of the frame 21. The frame 21 is also provided with a box structure 20 as in Embodiment 1. In this embodiment, the box structure 20 is disposed at the top of the frame 21.

[0054] The trolley in this embodiment has the box structure 20 in Embodiment 1. The box structure 20 is hinged to the upper cover 2 by the connecting rod 3 and slidably connected to the lower shell 1 to realize opening and closing. Since the connecting rod 3 connects the upper cover 2 and the lower shell 1 together, the opening of the cover is more stable. When using the box structure 20, you only need to flip the upper cover 2 to adjust the opening angle of the upper cover 2, which is more convenient to use.

Claims

1. A box structure comprising a lower shell (1) and an upper cover (2) hinged at the rear side of the lower shell (1), characterized in that: Also comprising The opening and closing structure comprises a connecting rod (3) and a sliding groove base (5), the sliding groove base (5) is arranged on the lower shell (1); the upper end of the connecting rod (3) is hinged with the upper cover (2), and the lower end is connected with the sliding groove base (5) through a sliding shaft (4) for sliding forward and backward; the sliding groove base (5) comprises an upper sliding groove (6) and a lower sliding groove (7), the upper sliding groove (6) is connected with the lower sliding groove (7) at both ends; Positioning recesses (8) are arranged on the lower sliding groove (7), when the sliding shaft (4) slides along the lower sliding groove (7), it can be positioned in different positioning recesses (8) to make the upper cover (2) open to different angles, when the sliding shaft (4) returns along the upper sliding groove (6), the upper cover (2) covers the lower shell (1).

2. A cassette structure according to claim 1, wherein: The opening and closing structure is arranged on the left and right sides of the lower shell (1).

3. A cassette structure according to claim 1, wherein: A switching mechanism (9) is arranged between the upper end of the connecting rod (3) and the upper cover (2), which is used for switching the lower end of the connecting rod (3) from the lower sliding groove (7) to the upper sliding groove (6) when the upper cover (2) is turned to the maximum set angle.

4. A cassette structure according to claim 3, wherein: The switching mechanism (9) comprises a limiting seat (11) arranged on the inner side of the upper cover (2), and the upper end of the connecting rod (3) is rotatably installed in the limiting seat (11); when the upper cover (2) is turned to the maximum set angle, the rear side of the limiting seat (11) abuts against the upper end of the connecting rod (3), so that the connecting rod (3) is switched from the lower sliding groove (7) to the upper sliding groove (6) through elastic deformation.

5. A cassette structure according to claim 4, wherein: The upper end of the connecting rod (3) is provided with a spring piece (14), one of the limiting seat (11) and the spring piece (14) is provided with a shaft hole (13), and the other is provided with a rotating shaft (15) matched with the shaft hole (13), and the limiting seat (11) is further provided with an avoiding space (16) for deforming the spring piece (14).

6. A cassette structure according to claim 5, wherein: The front side of the limiting seat (11) is provided with an opening (12), and the upper end of the connecting rod (3) is installed into the limiting seat (11) through the opening (12).

7. The cartridge structure of claim 1, wherein: A anti-disengagement piece (10) is arranged on the sliding groove base (5), and the lower end of the connecting rod (3) is clamped between the anti-disengagement piece (10) and the sliding groove base (5).

8. The cartridge structure of claim 1, wherein: The positioning recess (8) is approximately V-shaped, the front section of the positioning recess (8) is a vertical surface (23) and the rear section is an inclined surface (18), and the vertical surface (23) and the inclined surface (18) are connected through a curved surface (17).

9. The cartridge structure of claim 1, wherein: The sliding groove base (5) is arranged on the inner side wall of the lower shell (1).

10. A trolley comprising a frame (21) and a wheel assembly (22) provided at the bottom of the frame (21), characterized in that: The frame body (21) is further provided with a box body structure (20) according to any one of claims 1-9.

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