A shopping cart with side door lock catch folding

Abstract

The utility model discloses a shopping cart with side door lock catch folding relates to shopping cart field, including bowl body backboard, front plate, two side plates, one side rotation connection with the side of backboard, the other side rotation connection with front plate, and two side plates can fold to make backboard and front plate close to each other or away from each other, bottom plate, one side rotation connection with backboard, and bottom plate can rotate upward and be pasted together with backboard. The utility model discloses through setting up the side plate of folding, so that when folding, two side plates can be V-shaped and be folded inwards, and are tightly laminated with front plate and backboard, greatly reduce the overall volume after folding, and convenient transportation and storage. Moreover, through setting up slide, spring and clamping block etc. structure, the stability when side plate unfolding can be realized, avoids the situation of side plate folding caused by the shopping cart bumping or shaking.

Description

Technical Field

[0001] This utility model relates to the field of shopping carts, specifically a folding shopping cart with a side door lock. Background Technology

[0002] Shopping carts, as common carrying tools in daily life, are widely used in supermarkets, shopping malls, and other places due to their convenience. To facilitate carrying and storage, folding shopping carts have emerged. Traditional folding shopping carts mostly use a simple hinge structure, achieving side panel folding by bringing the front and rear panels together. Existing side panel locking mechanisms are often complex or have problems such as insecure locking and inconvenient operation. For example, some shopping carts lack an effective automatic locking mechanism for the side panels when unfolded, which may lead to accidental folding due to bumps during pushing, affecting safety. For instance, a common design involves a sliding crossbar on the folding side panel. When unfolded, the crossbar slides between the two side panels to prevent folding. However, during walking, especially with the smaller wheels of the shopping cart, vibrations are more likely. Under vibration and bumps, the crossbar may shift, causing the side panels to fold unexpectedly. Furthermore, unlocking when folding can be cumbersome. Therefore, the market urgently needs a folding shopping cart that is simple in structure, smaller in size when folded, stable in the unfolded state, and easy to operate. Utility Model Content

[0003] The purpose of this invention is to provide a shopping cart with a side door lock and folding mechanism to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a folding shopping cart with a side door lock, comprising:

[0005] Back panel;

[0006] front panel;

[0007] Two side panels, one side of which is rotatably connected to the side of the rear panel, and the other side of which is rotatably connected to the front panel. The two side panels can be folded so that the rear panel and the front panel can be brought closer to each other or moved away from each other.

[0008] The base plate is rotatably connected to the rear plate on one side. The base plate can rotate upwards and fit together with the rear plate.

[0009] Preferably, a support block is fixedly installed at the bottom of the rear plate.

[0010] Preferably, the bottom of the front plate is rotatably mounted with rollers, and when the support block and rollers are in contact with the horizontal ground, the bottom plate is just in a horizontal position.

[0011] Preferably, a pull rod is mounted on the front panel.

[0012] Preferably, the side plate includes a first side plate and a second side plate, one side of the first side plate and one side of the second side plate are rotatably connected, the first side plate is rotatably connected to one side of the rear plate, and the second side plate is rotatably connected to one side of the front plate.

[0013] A connecting strip is fixedly installed on the upper end of one side wall of the first side plate;

[0014] A slide bar is slidably installed on one side of the second side plate. A spring is installed between the bottom of the slide bar and the second side plate. An L-shaped locking block is fixedly installed on the side of the slide bar facing the inside of the vehicle body. When the first side plate and the second side plate are rotated to the same vertical plane, the connecting bar engages with the locking block.

[0015] Preferably, a groove is provided on the top of one side of the second side plate, and a slide bar is slidably installed in the groove.

[0016] Preferably, the bottom of the slide groove is equipped with a limiting post, and the bottom of the slide bar is provided with an oblong hole that matches the limiting post.

[0017] Preferably, the side of the locking block away from the slide bar is configured as a ramp structure. When the side plate is unfolded, the connecting strip contacts the ramp of the locking block, and the slide bar moves downward so that the connecting strip engages with the locking block.

[0018] Preferably, a protrusion matching the card block is fixedly installed on the connecting strip.

[0019] Preferably, the front panel, the first side panel, and the second side panel are all fixedly provided with a support platform on one side of the vehicle body for supporting the bottom plate.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention features foldable side panels that, when folded, allow the two side panels to fold inward in a V-shape, tightly overlapping with the front and rear panels, significantly reducing the overall volume after folding and facilitating transportation and storage. Furthermore, by incorporating sliding strips, springs, and locking mechanisms, the side panels achieve stability when unfolded, preventing folding caused by bumps or vibrations in the shopping cart. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the present invention;

[0023] Figure 2 This is an unfolded view of the rear plate and side plate of this utility model;

[0024] Figure 3 This is a structural diagram of the side plate of this utility model;

[0025] Figure 4 This is a structural diagram of the first and second side plates of this utility model;

[0026] Figure 5 This utility model Figure 3 Enlarged view of point A in the middle;

[0027] Figure 6 This is a structural diagram of the slider of this utility model.

[0028] In the diagram: 1. Rear plate; 2. First side plate; 3. Second side plate; 4. Front plate; 5. Tie rod; 6. Roller; 7. Support block; 8. Base plate; 9. Sliding strip; 10. Connecting strip; 11. Locking block; 12. Spring; 13. Waist-shaped hole; 14. Limiting post. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-2 As shown, this embodiment discloses a folding shopping cart with side door latches, including a rear panel 1, a front panel 4, two side panels, and a bottom panel 8, as detailed below. Figure 2 As shown, a mounting groove is provided on one side of the base plate 8, and a rotating shaft is fixedly installed in the mounting groove. A shaft hole matching the rotating shaft is provided on the bottom side of the rear plate 1. The rotating shaft is rotatably installed in the shaft hole, realizing the rotatable connection between the rear plate 1 and the base plate 8, and the base plate 8 can rotate upward.

[0031] Two side plates are located between the rear plate 1 and the front plate 4, respectively, and the front and rear sides of the side plates are rotatably connected to the rear plate 1 and the front plate 4, respectively. Specifically, the side plates include a first side plate 2 and a second side plate 3, with one side of the first side plate 2 and one side of the second side plate 3 rotatably connected. Figure 3 and Figure 4 As shown, a matching protrusion is fixedly installed on the side where the first side plate 2 and the second side plate 3 are connected, and a vertical shaft hole is opened on the protrusion. A pin is inserted into the vertical shaft hole (the two ends of the pin are limited by nuts to prevent it from falling out of the vertical shaft hole).

[0032] The side of the first side plate 2 away from the second side plate 3 is rotatably connected to the side of the rear plate 1, and the side of the second side plate 3 away from the first side plate 2 is rotatably connected to the side of the front plate 4, thus forming a frame-shaped structure, such as... Figure 1 As shown.

[0033] like Figures 4-6As shown, a connecting strip 10 is fixedly installed on the upper part of the side where the first side plate 2 and the second side plate 3 are in contact. The connecting strip 10 has a rectangular structure. A groove is opened on the upper side of the second side plate 3 near the first side plate 2. A slider 9 is slidably installed in the groove and can slide up and down inside the groove. A spring 12 is installed between the slider 9 and the bottom of the groove (i.e., with the second side plate 3). One end of the spring 12 is fixedly connected to the slider 9, and the other end is in contact with the groove (a cylinder is fixedly installed at the bottom of the groove, and the cylinder slightly protrudes from the bottom of the groove. The bottom end of the spring 12 is located outside the cylinder, which supports and limits the bottom of the spring 12 to prevent the bottom of the spring 12 from sliding and tilting in the groove). The spring 12 provides an upward elastic force to the slider 9. The bottom of the inner cavity of the slide groove is also equipped with a limiting post 14 perpendicular to the movement direction of the slide bar 9. The bottom of the slide bar 9 is provided with an oblong hole 13 that matches the limiting post 14. The limiting post 14 and the oblong hole 13 limit the slide bar 9 and prevent the slide bar 9 from falling out of the slide groove.

[0034] like Figure 4 As shown, a through hole is provided on one side wall of the chute near the inside of the shopping cart. The through hole is a reserved part for installing the limiting post 14, which can be inserted into the through hole.

[0035] When installing the slide bar 9, the limiting post 14 is pulled out of the through hole, and the slide bar 9 and the spring 12 are put into the slide groove together. Then, the slide bar 9 is pressed down so that the waist-shaped hole 13 is aligned with the through hole. Then the limiting post 14 can be inserted into the through hole to realize the installation of the slide bar 9.

[0036] A horizontally placed L-shaped locking block 11 is fixedly installed on the side of the slide bar 9 facing the rear without the interior of the vehicle, as shown in the following figure. Figure 5 and Figure 6 As shown, there are two locking blocks 11. The L-shaped bend of the locking block 11 is away from the slide bar 9. The outer side of the bend of the locking block 11 is set as a ramp structure. During the process of the first side plate 2 and the second side plate 3 rotating to the same vertical plane, the connecting bar 10 first contacts the ramp, causing the slide bar 9 to move downward. At the same time, the spring 12 is compressed until the connecting bar 10 moves into the interior of the locking block 11. Under the elastic force of the spring 12, the slide bar 9 returns to its original position upward, realizing the locking of the connecting bar 10 and the locking block 11.

[0037] In a further embodiment, a downward protrusion is fixedly installed on the bottom side of the connecting strip 10. The thickness of the protrusion is the same as the thickness of the L-shaped cavity of the locking block 11. The protrusion can be engaged with the locking block 11 to achieve the engagement of the connecting strip 10 and the locking block 11, thereby making the first side plate 2 and the second side plate 3 on the same vertical plane and maintaining the unfolded state.

[0038] In this embodiment, a support platform is fixedly provided on one side of the front panel 4, the first side panel 2, and the second side panel 3 located inside the vehicle body. When the bottom plate 8 is rotated to a horizontal position, the bottom surface of the bottom plate 8 contacts the support platform to support the bottom plate 8. At the same time, under the action of the bottom plate 8's own weight, the bottom plate 8 remains in a horizontal position.

[0039] When folding the shopping cart, first rotate the base plate 8 upwards to make it as vertical as possible. Then, press down on the sliders 9 on the two side panels with both hands, and move them along the sliders as shown in the image. Figure 1 As indicated by the arrow, the side panel is pushed inward, separating the connecting strip 10 from the locking block 11. The first side panel 2 and the second side panel 3 fold together in a V-shape, and the front panel 4 and the rear panel 1 move closer to each other, thus achieving folding. By designing each side panel as a structure in which the first side panel and the second side panel are rotatably connected by a vertical pin, the two side panels can be folded inward in a V-shape during folding, tightly overlapping with the front and rear panels, greatly reducing the overall volume after folding, facilitating transportation and storage. This side door locking mechanism mainly consists of a few components such as a slide bar, spring, locking block, connecting strip, and limiting post. The structure is compact, and the parts are easy to manufacture and assemble, which helps to reduce manufacturing costs.

[0040] When the shopping cart is opened, push the side panels outwards. The first side panel 2 and the second side panel 3 unfold together, while the front panel 4 and the rear panel 1 move away from each other until the first side panel 2 and the second side panel 3 are unfolded to the same vertical plane. The connecting strip 10 (or the protrusion of the connecting strip 10) engages with the locking block 11, and the shopping cart remains in the open state. When the shopping cart is unfolded, as the first side panel and the second side panel rotate to the same vertical plane, the connecting strip will press against the ramp of the locking block, forcing the slider to compress the spring and slide down. After the connecting strip is in place, the spring force causes the slider to return to its original position, causing the locking block to automatically engage with the connecting strip (or its protrusion), completing the locking process. The entire process is smooth and automatic, requiring no additional operation.

[0041] In a further embodiment, such as Figure 1 and Figure 2 As shown, a support block 7 is fixedly installed at the bottom of the rear plate 1, and a roller 6 is rotatably installed at the bottom of the front plate 4. The height of the support block 7 is exactly the same as the radius of the roller 6. When the support block 7 and the roller 6 are in contact with the horizontal ground, the base plate 8 is just in a horizontal position.

[0042] The front panel 4 has mounting holes for installing a pull rod 5. The structure and installation of the pull rod 5 are the same as those of existing common suitcases, and will not be described in detail here.

[0043] When shopping, simply pull the handle. With the cart tilted, support block 7 off the ground and wheels 6 in contact with the ground, you can pull the cart. The handle 5, your body, and the ground form a triangular structure, maintaining the cart's stability while tilted. When selecting items, simply keep the cart level with support block 7 in contact with the ground to ensure stability.

[0044] 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 folding shopping cart with a side door lock, characterized in that, include: Back panel; front panel; Two side panels, one side of which is rotatably connected to the side of the rear panel, and the other side of which is rotatably connected to the front panel. The two side panels can be folded so that the rear panel and the front panel can be brought closer to each other or moved away from each other. The base plate is rotatably connected to the rear plate on one side. The base plate can rotate upward and fit together with the rear plate. The side plate includes a first side plate and a second side plate, one side of the first side plate and one side of the second side plate are rotatably connected, the first side plate is rotatably connected to one side of the rear plate, and the second side plate is rotatably connected to one side of the front plate. A connecting strip is fixedly installed on the upper end of one side wall of the first side plate; A slide bar is slidably installed on one side of the second side plate. A spring is installed between the bottom of the slide bar and the second side plate. An L-shaped locking block is fixedly installed on the side of the slide bar facing the inside of the vehicle body. When the first side plate and the second side plate are rotated to the same vertical plane, the connecting bar engages with the locking block.

2. A folding shopping cart with a side door lock according to claim 1, characterized in that: A support block is fixedly installed at the bottom of the rear plate.

3. A folding shopping cart with a side door lock according to claim 2, characterized in that: The bottom of the front plate is rotatably mounted with rollers, and when the support block and rollers are in contact with the horizontal ground, the bottom plate is just in a horizontal position.

4. A folding shopping cart with a side door lock according to claim 3, characterized in that: A pull rod is installed on the front panel.

5. A folding shopping cart with a side door lock according to claim 1, characterized in that: A groove is provided on the top of one side of the second side plate, and a slide bar is slidably installed in the groove.

6. A folding shopping cart with a side door lock according to claim 5, characterized in that: The bottom of the slide is equipped with a limiting post, and the bottom of the slide bar is provided with an oblong hole that matches the limiting post.

7. A folding shopping cart with a side door lock according to claim 1, characterized in that: The side of the locking block away from the slide bar is set as a ramp structure. When the side plate is unfolded, the connecting strip contacts the ramp of the locking block, and the slide bar moves downward so that the connecting strip engages with the locking block.

8. A folding shopping cart with a side door lock according to claim 1, characterized in that: The connecting strip is fixedly installed with a protrusion that matches the card block.

9. A folding shopping cart with a side door lock according to claim 1, characterized in that: The front panel, the first side panel, and the second side panel are all fixedly equipped with support platforms on one side of the vehicle body to support the bottom plate.

Images