Elastic anti-overturning structure and folding shopping cart

Abstract

The utility model relates to the field of folding shopping carts, and discloses an elastic anti-overturning structure and a folding shopping cart. The device comprises a first plate body, a second plate body and an elastic plunger latch, the first plate body is hinged to the second plate body, the elastic plunger latch is installed on the first plate body in a sliding mode, the second plate body is provided with a locking inserting groove, and one end of the elastic plunger latch is inserted into the locking inserting groove so as to lock and limit the first plate body and the second plate body after being opened. The elastic plunger latch has the tendency of being continuously inserted into the locking insertion groove under the condition that the elastic plunger latch is not subjected to external force, the first plate body or the second plate body is provided with a key in a sliding mode, and the key is suitable for driving the elastic plunger latch to be completely disengaged from the locking insertion groove when being subjected to pressing force. The elastic plunger latch can lock the first plate body and the second plate body which are completely opened, so that the first plate body and the second plate body are not easy to rotate relatively and overturn; unlocking is realized by pressing the key, and the operation is simple and convenient; and more labor is saved when the key is pressed for unlocking.

Description

Technical Field

[0001] This utility model relates to the field of folding shopping cart technology, and more specifically, to an elastic anti-tipping structure and a folding shopping cart. Background Technology

[0002] Foldable shopping carts can be folded up when not in use, thus reducing their space-consuming footprint. Each side panel of the foldable shopping cart is constructed from two hinged panels, resulting in a compact folded size. When the foldable shopping cart is in use, the two side panels are unfolded. However, current foldable shopping carts lack a flip-over restraint mechanism after the side panels are unfolded. This makes it easy for the side panels to flip and fold over, affecting the normal use of the shopping cart. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model first provides an elastic anti-rollover structure, comprising a first plate, a second plate, and an elastic latch. The first plate and the second plate are hinged together, and the elastic latch is slidably mounted on the first plate. The second plate is provided with a locking slot. One end of the elastic latch protrudes from the first plate and is inserted into the locking slot to lock and limit the first and second plates after they are opened. The elastic latch has a tendency to continuously insert into the locking slot when not subjected to external force. A button is slidably provided on the first or second plate. One side of the button contacts the elastic latch, and the other side is exposed outside the first or second plate. When the button is pressed, it is adapted to drive the elastic latch to completely disengage from the locking slot.

[0004] Optionally, the hinge end of the first plate and / or the hinge end of the second plate are provided with a limiting block, which is adapted to limit the rotation of the first plate and the second plate after they are fully opened.

[0005] Optionally, the hinge end of the first plate is provided with a telescopic groove, the elastic latch is inserted into the telescopic groove and slides within the telescopic groove, and the locking slot is provided at the hinge end of the second plate.

[0006] Optionally, a visible opening is provided on one side of the expansion groove wall, the visible opening is arranged at intervals with the hinge end of the first plate, and the visible opening penetrates the first plate along the opening direction.

[0007] Optionally, the resilient latch includes a latch and an elastic element, with both ends of the elastic element abutting the bottom of the telescopic groove and the latch, respectively, and the end of the latch away from the elastic element protruding from the telescopic groove and inserted into the locking slot.

[0008] Optionally, the button is disposed on the first plate, and a pressing groove is provided on the top of the first plate. The pressing groove is connected to the telescopic groove. The button is inserted into the pressing groove and moves within the pressing groove. One end of the button is inserted into the telescopic groove and contacts the latch to drive the latch to move.

[0009] Optionally, the latch is provided with a drive groove, and a drive slope is provided on one side of the groove wall. One end of the button is inserted into the drive groove and abuts against the drive slope. The drive slope gradually tilts away from the second plate along the direction in which the button is pulled out of the drive groove.

[0010] Optionally, the outer wall of the first plate is provided with a notch, the notch penetrates the thickness and top of the first plate, the pressing groove is located at the notch and communicates with the notch, the top of the button does not protrude from the notch when the elastic latch is in the locked state, the groove wall of the pressing groove is provided with a protrusion, and the button abuts against the protrusion.

[0011] Optionally, the outer wall of the button is provided with a limiting protrusion, and the groove wall of the pressing groove is provided with a limiting elongated groove. The limiting protrusion is inserted into the limiting elongated groove to make the button less likely to fall off the first plate. The limiting protrusion slides directionally within the limiting elongated groove.

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

[0013] 1. The elastic latch can lock the first and second plates after they are fully opened, making it difficult for the first and second plates to rotate relative to each other and flip over, thus improving the stability of the first and second plates after they are opened. At the same time, the elastic latch always tends to be inserted into the locking slot, which improves the stability of locking the first and second plates after they are opened.

[0014] 2. The button is located on the top of the first plate with one end exposed to the air for easy operation when unlocking. To release the spring latch from locking the first and second plates, simply press the button. The operation is simple and convenient.

[0015] 3. When releasing the locking state of the elastic latch, if the button is ineffective or lost, the user can also move the latch directly through the visual opening to drive the latch to move, providing a backup solution for the unlocking structure. In addition, when installing the elastic element and the latch, the installation status can be intuitively understood through the visual opening, improving the convenience and efficiency of installation.

[0016] 4. The notch design prevents the button from protruding from the first plate, while also allowing one end of the button to be exposed to the air for easy operation. The raised strip design reduces the contact area between the button and the pressing groove wall, thereby reducing the friction force when the button moves and making it easier to press the button.

[0017] In addition, this utility model provides a folding shopping cart, including the elastic anti-tipping structure described above.

[0018] Compared to existing technologies, the folding shopping cart described in this utility model has the same advantages as the aforementioned elastic anti-flip structure, which will not be repeated here. Attached Figure Description

[0019] Figure 1 This is an exploded view of the first plate and the second plate in an embodiment of this utility model;

[0020] Figure 2 This is an exploded view of the first plate, the elastic latch, and the button in an embodiment of this utility model;

[0021] Figure 3 This is an exploded view of the elastic latch and button in an embodiment of this utility model;

[0022] Figure 4 This is an exploded view of the first plate and the button in an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. First plate; 11. Telescopic groove; 12. Visible opening; 13. Pressing groove; 14. Protrusion; 15. Limiting groove; 2. Second plate; 21. Locking slot; 3. Elastic latch; 31. Insert latch; 32. Elastic element; 33. Drive groove; 34. Drive slope; 4. Button; 41. Limiting protrusion. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-4 This application will be described in further detail.

[0025] In a first aspect, this utility model embodiment provides an elastic anti-tumble structure, referring to... Figure 1 The elastic anti-flip structure includes a first plate 1, a second plate 2, and an elastic latch 3. The first plate 1 and the second plate 2 are connected at their closest points by a hinge shaft. The elastic latch 3 is slidably installed on the first plate 1, with one end protruding from the first plate 1 and inserted into the second plate 2 to lock and limit the first plate 1 and the second plate 2 after they are opened, so that the first plate 1 and the second plate 2 are not easy to flip in the folding direction after they are fully opened.

[0026] Let the hinge end of the first plate 1 and the second plate 2 be the hinge end of the first plate 1; let the hinge end of the second plate 2 and the first plate 1 be the hinge end of the second plate 2. A limit stop is integrally formed at the hinge end of the first plate 1; a limit stop is also integrally formed at the hinge end of the second plate 2. The limit stops on the first plate 1 and the second plate 2 are arranged alternately. When the first plate 1 and the second plate 2 are fully open, the limit stop on the first plate 1 abuts against the inner wall of the second plate 2; the limit stop on the second plate 2 abuts against the inner wall of the first plate 1. After rotating 180 degrees relative to the second plate 2, the first plate 1 is limited by the limit stops and cannot continue to rotate in the opening direction.

[0027] In another embodiment, a limiting block may be provided only at the hinge end of the first plate 1; in yet another embodiment, a limiting block may be provided only at the hinge end of the second plate 2.

[0028] Reference Figure 1 and Figure 2 The first plate 1 has a telescopic groove 11 at its hinge end, and an elastic latch 3 is inserted into and slides within the telescopic groove 11. The second plate 2 has a locking slot 21 at its hinge end, and one end of the elastic latch 3 protrudes from the telescopic groove 11 and is inserted into the locking slot 21, thereby limiting the rotation of the first plate 1 and the second plate 2 along the folding direction and preventing the first plate 1 and the second plate 2 from rotating relative to each other and folding over. The elastic latch 3 has a tendency to continuously insert into the locking slot 21 when no external force is applied, which improves the stability of locking the first plate 1 and the second plate 2 after they are opened.

[0029] In detail, the resilient latch 3 includes a latch 31 and a resilient element 32. The latch 31 is inserted into the telescopic groove 11, and both ends of the resilient element 32 abut against the bottom of the telescopic groove 11 and the latch 31, respectively. Under the action of the resilient element 32, the latch 31 has a constant tendency to insert into the locking slot 21. The end of the latch 31 away from the resilient element 32 protrudes out of the telescopic groove 11 and is inserted into the locking slot 21 under the action of the resilient element 32. In this embodiment, the resilient element 32 is preferably a spring. In another embodiment, the resilient element 32 can also be a V-shaped spring.

[0030] Reference Figure 2 and Figure 3 Since the elastic element 32 is preferably a spring in this embodiment, a spring groove is provided at one end of the latch 31 near the elastic element 32; a spring post is integrally formed at the bottom of the telescopic groove 11, one end of the elastic element 32 is sleeved on the spring post, and the other end is inserted into the spring groove, so that when the latch 31 compresses the elastic element 32 during the movement, the elastic element 32 is not easy to come out of the telescopic groove 11, which improves the stability of the elastic element 32 after installation.

[0031] A visible opening 12 is formed on one side of the expansion groove 11 along the thickness direction of the first plate 1, penetrating the first plate 1. The visible opening 12 is spaced apart from the hinged end of the first plate 1, thereby ensuring the stability and locking effect of the latch 31 in the locked state. When installing the elastic element 32 and the latch 31, the operator can intuitively understand the installation status through the visible opening 12, improving the convenience and efficiency of installation. In addition, the user can also directly move the latch 31 through the visible opening 12 to unlock it.

[0032] Reference Figure 1 and Figure 2 The top of the first plate 1 has a pressing groove 13, which communicates with the telescopic groove 11. A button 4 is inserted into and slides within the pressing groove 13. One end of the button 4 is inserted into the telescopic groove 11 and contacts the latch 31, while the other end is exposed outside the first plate 1 for easy user operation. When the button 4 is pressed, it is suitable for driving the latch 31 to move and completely disengage from the locking slot 21. Placing the button 4 on the first plate 1 allows for better engagement with the latch 31 located on the first plate 1. In another embodiment, the button 4 can be slidably mounted on the second plate 2.

[0033] The outer wall of the first plate 1 has a notch that extends through the thickness and top of the first plate 1. The pressing groove 13 is located at the notch and communicates with it. The button 4 is located at the notch and is exposed for easy operation by the user. When the latch 31 is locked, the top of the button 4 does not protrude from the notch.

[0034] Reference Figure 2 and Figure 4 On the two opposite walls of the pressing groove 13, multiple protrusions 14 are spaced apart along the direction of movement of the button 4. All protrusions 14 extend along the direction of movement of the button 4 and abut against the button 4. Compared to the button 4 directly contacting the wall of the pressing groove 13, the protrusions 14 reduce the contact area between the button 4 and the wall of the pressing groove 13, thereby reducing the friction experienced by the button 4 during movement and making it easier to press the button 4.

[0035] A drive groove 33 is provided on the side of the latch 31 near the button 4, and the button 4 is inserted into the drive groove 33. The groove wall of the drive groove 33 away from the second plate 2 is provided with a drive slope 34, which gradually slopes away from the second plate 2 along the direction in which the button 4 is pulled out of the drive groove 33. The end of the button 4 inserted into the drive groove 33 is provided with an inclined surface that fits against the drive slope 34. When the button 4 is pressed, it will squeeze the drive slope 34, causing the latch 31 to completely disengage from the locking slot 21 and retract into the telescopic groove 11.

[0036] Reference Figure 2 and Figure 4The outer wall of button 4 is integrally formed with a limiting protrusion 41. A limiting elongated groove 15 is formed on one side of the groove wall of the pressing groove 13, which penetrates the first plate 1. The direction of the limiting elongated groove 15 through the first plate 1 is on the same side as the direction of the visible opening 12. The limiting protrusion 41 is inserted into the limiting elongated groove 15. When button 4 is installed, the limiting protrusion 41 is interference-fitted into the pressing groove 13. Force is required to move the limiting protrusion 41 to the limiting elongated groove 15 and insert it into the limiting elongated groove 15. The end of the limiting protrusion 41 near the inclined surface of button 4 is provided with a guide slope so that the limiting protrusion 41 can interference fit into the pressing groove 13.

[0037] When button 4 moves, the limiting protrusion 41 slides directionally within the limiting groove 15. The movement of button 4 is limited by the cooperation of the limiting protrusion 41 and the limiting groove 15, making it difficult for button 4 to fall off the first plate 1.

[0038] The implementation principle of the elastic anti-flip structure in this application embodiment is as follows: After the first plate 1 rotates 180 degrees relative to the second plate 2, it is limited by the limiting block and cannot continue to rotate in the opening direction. Under the action of the elastic element 32, the latch 31 can be inserted into the locking slot 21 to lock the first plate 1 and the second plate 2 after they are fully opened, so that the first plate 1 and the second plate 2 are not easy to flip over due to relative rotation in the folding direction.

[0039] Since the top of button 4 is exposed to the air, when it is necessary to engage the latch 31 to lock the first plate 1 and the second plate 2, pressing the top of button 4 will cause the button 4 to be pressed, which will squeeze the drive ramp 34 and drive the latch 31 to completely disengage from the locking slot 21 and retract into the telescopic groove 11. In addition, if button 4 becomes ineffective or is lost, the user can also move the latch 31 directly through the visible opening 12 to drive the latch 31 to move, providing a backup solution for the unlocking structure.

[0040] Secondly, another embodiment of the present invention provides a folding shopping cart, wherein the side panel of the folding shopping cart is equipped with the elastic anti-flip structure described in the first aspect, making it less likely for the side panel to flip when the folding shopping cart is in the open state, thereby improving the stability of the folding shopping cart during use.

[0041] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0042] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0043] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0045] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. An elastic anti-inversion structure, characterized by: The utility model provides a board, including first plate body (1), second plate body (2) and elastic lock (3), first plate body (1) is connected with second plate body (2) hingedly, elastic lock (3) is installed in first plate body (1) slip, second plate body (2) is equipped with locking slot (21), and one end of elastic lock (3) protrudes first plate body (1) and inserts in locking slot (21) to lock and position first plate body (1) and second plate body (2) after opening, and elastic lock (3) has the tendency of inserting into locking slot (21) continuously under no external force, and first plate body (1) or second plate body (2) is equipped with button (4) slip, one side of button (4) is in contact with elastic lock (3), and the other side is exposed to first plate body (1) or second plate body (2) outside, and button (4) is suitable for driving elastic lock (3) to be completely out of locking slot (21) when being pressed.

2. The elastic inversion-preventing structure according to claim 1, characterized by: The hinged end of the first plate body (1) or / and the hinged end of the second plate body (2) is provided with a limiting stopper, which is suitable for limiting the rotation of the first plate body (1) and the second plate body (2) after being completely opened.

3. The elastic inversion-preventing structure according to any one of claims 1-2, wherein: The hinged end of the first plate body (1) is provided with an expansion slot (11), the elastic lock (3) is inserted into the expansion slot (11) and slides in the expansion slot (11), and the locking slot (21) is arranged at the hinged end of the second plate body (2).

4. The elastic inversion-preventing structure according to claim 3, characterized by: The slot wall of one side of the expansion slot (11) is provided with a visible opening (12), the visible opening (12) is arranged at intervals with the hinged end of the first plate body (1), and the visible opening (12) penetrates the first plate body (1) along the opening direction.

5. The elastic inversion-preventing structure of claim 3, wherein: The elastic lock (3) includes a plug (31) and an elastic member (32), the two ends of the elastic member (32) are respectively abutted against the slot bottom of the expansion slot (11) and the plug (31), and the end of the plug (31) away from the elastic member (32) protrudes the expansion slot (11) and is inserted into the locking slot (21).

6. The elastic inversion-preventing structure of claim 5, wherein: The button (4) is arranged on the first plate body (1), the top of the first plate body (1) is provided with a pressing slot (13), the pressing slot (13) and the expansion slot (11) are in communication with each other, the button (4) is inserted into the pressing slot (13) and moves in the pressing slot (13), and one end of the button (4) is inserted into the expansion slot (11) and is in contact with the plug (31) to drive the plug (31) to move.

7. The elastic inversion-preventing structure of claim 6, wherein: The plug (31) is provided with a driving groove (33), the slot wall of one side of the driving groove (33) is provided with a driving slope (34), one end of the button (4) is inserted into the driving groove (33) and is in abutment with the driving slope (34), and the driving slope (34) gradually inclines away from the second plate body (2) in the direction of pulling out of the button (4) in the driving groove (33).

8. The elastic inversion-preventing structure of claim 6, wherein: The outer wall of the first plate body (1) is provided with a notch, the notch penetrates the thickness and the top of the first plate body (1), the pressing groove (13) is located at the notch and communicates with the notch, the top of the button (4) does not protrude out of the notch when the elastic lock latch (3) is in the locking state, the groove wall of the pressing groove (13) is provided with a convex strip (14), and the button (4) abuts against the convex strip (14).

9. The elastic inversion-preventing structure of claim 6, wherein: The outer wall of the button (4) is provided with a limiting protrusion (41), the groove wall of the pressing groove (13) is provided with a limiting long groove (15), the limiting protrusion (41) is inserted into the limiting long groove (15) and is suitable for preventing the button (4) from falling off the first plate body (1), and the limiting protrusion (41) directionally slides in the limiting long groove (15).

10. A folding shopping cart, characterized by, The elastic anti-turning structure comprises the first plate body (1), the elastic lock latch (3), the button (4) and the pressing groove (13).

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