Folding shopping cart

Abstract

This application relates to the field of shopping carts, in particular to a folding shopping cart, which includes a bottom plate, a front plate, a rear plate and a folding assembly. The folding assembly includes a positioning plate, a positioning block, two first folding plates and two second folding plates. The ends of the two first folding plates are rotatably connected to both sides of the front plate in a one-to-one correspondence. The other end of the first folding plate is correspondingly and rotatably connected to the end of the second folding plate. The other ends of the two second folding plates are rotatably connected to both sides of the rear plate in a one-to-one correspondence. The bottom plate is rotatably connected to the surface of the front plate. The positioning plate is connected to the surface of the rear plate facing the front plate, the positioning block is connected to the surface of the front plate facing the positioning plate, and a positioning groove is formed on the surface of the positioning plate. In this application, the positioning plate and the positioning block are provided. The outer wall of the positioning block abuts against the inner wall of the positioning groove to form a limit, so that the front plate is not easily separated from the rear plate, making it difficult for the shopping cart to unfold when encountering bumps during transportation, reducing the storage space for the shopping cart, making the folded shopping cart not easily damaged by impact, and shortening the usage cost of the shopping cart.

Description

Technical Field

[0001] This application relates to the field of shopping carts, and particularly to a foldable shopping cart. Background Art

[0002] A shopping cart is a tool commonly used by people when going out shopping. Especially when carrying some heavy items, the items can be placed in the inner cavity of the shopping cart, which brings great convenience to people.

[0003] In order to facilitate the storage of the shopping cart, currently foldable shopping carts are generally adopted. However, when the folded shopping cart encounters bumps during transportation, it is prone to unfold, and the unfolded shopping cart is easily damaged by external impacts, thus increasing the usage cost of the shopping cart. Summary of the Invention

[0004] In order to improve the problem that the folded shopping cart is prone to unfold when encountering bumps, this application provides a foldable shopping cart.

[0005] A foldable shopping cart provided by this application adopts the following technical solution:

[0006] A foldable shopping cart includes a bottom plate, a front plate, a rear plate, and a folding assembly. The folding assembly includes a positioning plate, a positioning block, two first folding plates, and two second folding plates. The ends of the two first folding plates are rotatably connected to both sides of the front plate in a one-to-one correspondence. The rotation axis of the first folding plate is parallel to the height direction of the front plate. The other end of the first folding plate is rotatably connected to the end of the second folding plate in a one-to-one correspondence. The rotation axis of the second folding plate is parallel to the rotation axis of the first folding plate. The other ends of the two second folding plates are rotatably connected to both sides of the rear plate in a one-to-one correspondence. The bottom plate is rotatably connected to the surface of the front plate. The rotation axis of the bottom plate is parallel to the length direction of the front plate. The positioning plate is connected to the surface of the rear plate facing the front plate. The positioning block is connected to the surface of the front plate facing the positioning plate. The positioning groove for the positioning block to be embedded is formed in the surface of the positioning plate protruding from the rear plate. When the bottom plate rotates towards the direction close to the front plate, and the first folding plate and the second folding plate fold towards the direction close to each other, the front plate and the rear plate approach each other, the positioning block is embedded in the positioning groove, and the outer wall of the circumferential direction of the positioning block abuts against the inner wall of the positioning groove to form a limit.

[0007] By adopting the above technical solution, when the shopping cart is in use, the first folding plate and the second folding plate are driven to rotate in a direction away from each other, the surfaces of the first folding plate and the second folding plate are flush with each other, driving the front plate and the rear plate to move away from each other, and at the same time driving the bottom plate to rotate in a direction away from the front plate, the surface of the bottom plate provides support for the items, realizing the opening of the shopping cart; when the shopping cart needs to be stored, the bottom plate is driven to rotate in a direction close to the front plate, the surface of the bottom plate abuts against the surface of the front plate to form a preliminary storage, and at the same time the first folding plate and the second folding plate are folded in a direction close to each other, the surface of the first folding plate abuts tightly against the surface of the second folding plate, and the surface of the first folding plate and the surface of the front plate clamp both sides of the bottom plate to form a limit, making the bottom plate not easy to deflect, and at the same time the front plate approaches the rear plate, the positioning block is embedded in the positioning groove, and the outer peripheral wall of the positioning block abuts tightly against the inner wall of the positioning groove to form a limit, making the front plate not easy to separate from the rear plate, so that the shopping cart is not easy to unfold when encountering bumps during transportation, reducing the storage space of the shopping cart, making the folded shopping cart not easy to be damaged by impact, thereby shortening the use cost of the shopping cart.

[0008] Optionally, a plurality of limiting blocks are connected at intervals on the surface of the bottom plate away from the front plate, limiting grooves for the limiting blocks to be embedded are formed on the surfaces of the first folding plate and the second folding plate, and the outer peripheral wall of the limiting block abuts tightly against the inner wall of the limiting groove to form positioning.

[0009] By adopting the above technical solution, when the first folding plate and the second folding plate rotate in a direction away from each other, the surfaces of the first folding plate and the second folding plate are flush with each other, the bottom plate rotates in a direction away from the front plate, the limiting blocks correspond to the limiting grooves one by one and are embedded, the outer peripheral wall of the limiting block abuts tightly against the inner wall of the limiting groove to form positioning, and the first folding plate and the second folding plate provide support for the bottom plate, making the bottom plate not easy to crack due to excessive pressure, and at the same time the first folding plate and the second folding plate are not easy to rotate during the use of the shopping cart, thereby improving the stability of the use of the shopping cart.

[0010] Optionally, a clamping component is connected between the first folding plate and the second folding plate. The clamping component includes a clamping plate and an inflatable airbag. A rotating cavity for the clamping plate to rotate is formed on the surface of the first folding plate facing the second folding plate. The rotation axis of the clamping plate and the rotation axis of the bottom plate are parallel to each other. A clamping cavity for the clamping plate to be embedded is formed on the surface of the second folding plate. The inflatable airbag is connected to the surface of the abutting plate close to the clamping cavity. When the clamping plate is embedded in the clamping cavity, the surface of the inflatable airbag abuts tightly against the inner wall of the clamping cavity to form a limit.

[0011] By adopting the above technical scheme, when folding plate one and folding plate two rotate in the direction away from each other and the plate surface of folding plate one is flush with the plate surface of folding plate two, the rotating chamber is connected to the clamping chamber, driving the clamping plate to rotate in the direction close to the clamping chamber, and the end of the clamping plate is embedded in the clamping chamber, and the surface of the inflated airbag is pressed against the inner wall of the clamping chamber to form a limit, so that the clamping plate is not easy to separate from the clamping chamber, thereby improving the limit stability of the clamping plate in the clamping chamber, and at the same time, one end of the clamping plate is located in the rotating chamber, and the other end of the clamping plate is located in the clamping chamber, so that it is not easy for folding plate one and folding plate two to rotate, thereby improving the stability of the shopping cart.

[0012] Optionally, the clamping assembly also includes an elastic part and an inflation piston, the clamping plate surface is provided with an inflation channel for the inflation piston to slide, the inflation channel is connected to the inner cavity of the inflatable airbag, one end of the elastic part in the elastic direction is connected to the inner wall of the inflation channel, and the other end of the elastic part in the elastic direction is connected to the surface of the inflation piston, the elastic part has the elastic force to drive the inflation piston to slide in the direction away from the inflation channel, and the end of the inflation piston tends to protrude from the clamping plate surface.

[0013] By adopting the above technical solution, when the end of the clamping plate is embedded in the clamping cavity and the surface of the inflatable airbag is pressed against the inner wall of the clamping cavity, the inflation piston is driven to slide in the direction close to the inflation channel, the air pressure in the inflation channel increases, the inflation channel is connected to the inner cavity of the inflatable airbag, the air in the inflation channel enters the inner cavity of the inflatable airbag, the surface of the inflatable airbag is pressurized and expanded and pressed against the inner wall of the clamping cavity to form a limit, thereby further increasing the clamping force between the inflatable airbag and the inner wall of the clamping cavity.

[0014] Optionally, the clamping assembly also includes a sliding rod, an elastic member 2 and a clamping rod. The surface of the folding plate 2 is provided with a sliding cavity for the sliding rod to slide. The clamping rod is rotatably connected to the end of the sliding rod protruding from the folding plate 2. The elastic coefficient of the elastic member 2 is greater than the elastic coefficient of the elastic member 1. One end of the elastic member 2 in the elastic force direction is connected to the rod surface of the sliding rod, and the other end of the elastic member 2 in the elastic force direction is connected to the rotating shaft of the clamping rod. The elastic member 2 has an elastic force that drives the clamping rod to rotate in a direction close to the inflation piston. The rod surface of the clamping rod presses against the surface of the inflation piston and drives the inflation piston to slide in a direction close to the inflation flow channel.

[0015] By adopting the above technical solution, when the end of the clamping plate is embedded into the clamping cavity, it drives the sliding rod to slide away from the sliding cavity, drives the pressing rod to slide away from the sliding cavity, the rotating shaft of the pressing rod protrudes from the second folding plate surface, and the elastic force of the second elastic member drives the pressing rod to rotate towards the inflatable piston, the surface of the pressing rod abuts against the surface of the inflatable piston and drives the inflatable piston to slide towards the air flow channel, the air pressure in the air flow channel increases, the air in the air flow channel enters the inner cavity of the inflatable airbag, the inflatable airbag is pressurized and expanded and abuts against the inner wall of the clamping cavity to form a limit, so that the inflatable piston is not prone to shift in the air flow channel, thereby improving the limiting stability of the inflatable piston in the air flow channel.

[0016] Optionally, the second folding plate is connected with a starting assembly, the starting assembly includes a starting rack, a starting gear and a third elastic member, a starting cavity for the starting rack to slide is formed on the inner wall of the clamping cavity, the sliding direction of the starting rack is parallel to the sliding direction of the sliding rod, the elastic coefficient of the third elastic member is greater than that of the second elastic member, one end of the third elastic member in the direction of the elastic force is connected to the surface of the second folding plate, the other end of the third elastic member in the direction of the elastic force is connected to the surface of the starting rack, the third elastic member has an elastic force to drive the starting rack to slide away from the starting cavity, and the end of the starting rack protrudes from the inner wall of the clamping cavity, the starting cavity communicates with the sliding cavity, the starting gear is rotatably connected to the inner wall of the starting cavity, the starting gear meshes with the starting rack, and a tooth groove meshing with the starting gear is formed on the surface of the sliding rod. When the end of the clamping plate is embedded into the clamping cavity, the surface of the clamping plate abuts against the surface of the starting rack and drives the starting rack to slide towards the starting cavity, driving the sliding rod to slide away from the sliding cavity.

[0017] By adopting the above technical solution, when the clamping plate rotates towards the clamping cavity, the surface of the clamping plate abuts against the end face of the starting rack and drives the starting rack to slide towards the starting cavity, the starting rack meshes with the starting gear, drives the starting gear to rotate, the inner wall of the tooth groove meshes with the starting gear, drives the sliding rod to slide away from the sliding cavity, realizes the directional sliding of the sliding rod, and does not require the user to manually drive the sliding rod to slide, thereby improving the simplicity of using the folding shopping cart.

[0018] Optionally, the second folding plate is connected with a heat dissipation assembly, the heat dissipation assembly includes a heat dissipation impeller, the heat dissipation impeller is rotatably connected to the surface of the second folding plate, and the heat dissipation impeller can drive the air flow in the inner cavity of the shopping cart when rotating.

[0019] By adopting the above technical solution, the heat dissipation impeller rotates on the surface of the second folding plate, drives the air flow in the shopping cart, and makes the items in the shopping cart not easily heat up and be damaged, thereby ensuring the stability of storing the items in the shopping cart.

[0020] Optionally, the heat dissipation component further includes a heat dissipation motor, an insert block, and a contact switch. The axis of the heat dissipation impeller and the sliding direction of the starting rack are parallel to each other. The starting cavity penetrates through the inner wall of the second folding plate. The heat dissipation motor is connected to the surface of the starting rack facing the heat dissipation impeller. The axis of the heat dissipation motor coincides with the axis of the heat dissipation impeller. The insert block is connected to the surface of the motor shaft of the heat dissipation motor. An insertion groove for the insert block to be inserted is formed on the surface of the rotating shaft of the heat dissipation impeller. The contact switch is connected to the inner wall of the insertion groove. The contact switch is electrically connected to the heat dissipation motor. When the starting rack slides towards the starting cavity, the insert block is inserted into the insertion groove, the contact switch abuts against the insert block and is turned on, and the heat dissipation motor is powered on and operates.

[0021] By adopting the above technical solution, when the end of the clamping plate is inserted into the clamping cavity, the surface of the clamping plate abuts against the end face of the starting rack and drives the starting rack to slide towards the starting cavity, driving the heat dissipation motor to slide towards the heat dissipation impeller. The insert block is inserted into the insertion groove, and the outer wall of the insert block tightly abuts against the inner wall of the insertion groove to form a limit, realizing the fixation of the heat dissipation motor and the heat dissipation impeller. At the same time, the contact switch abuts against the insert block and is turned on, the heat dissipation motor is powered on and operates, driving the heat dissipation impeller to rotate, realizing the directional start of the heat dissipation impeller, reducing energy consumption, and thus reflecting the concept of energy saving.

[0022] Optionally, the second folding plate is connected with a positioning component. The positioning component includes a positioning plate and an elastic member four. A positioning cavity for the positioning plate to slide is formed on the surface of the second folding plate facing the heat dissipation motor. A positioning groove for the end of the positioning plate to be inserted is formed on the surface of the first folding plate. One end of the elastic member four in the direction of its elastic force is connected to the surface of the second folding plate, and the other end of the elastic member four in the direction of its elastic force is connected to the surface of the positioning plate. The elastic member four has an elastic force to drive the positioning plate to slide away from the positioning groove. When the heat dissipation motor approaches the heat dissipation impeller, the surface of the heat dissipation motor abuts against the surface of the positioning plate and drives the positioning plate to slide towards the positioning groove. The end of the positioning plate is inserted into the positioning groove, and the surface of the positioning plate tightly abuts against the inner wall of the positioning groove to form a limit.

[0023] By adopting the above technical solution, when the heat dissipation motor slides towards the heat dissipation impeller, the insert block is inserted into the insertion groove. At the same time, the surface of the heat dissipation motor abuts against the surface of the positioning plate and drives the positioning plate to slide towards the positioning groove. The end of the positioning plate is inserted into the inner wall of the positioning groove, and the surface of the positioning plate tightly abuts against the inner wall of the positioning groove to form a limit, making it difficult for the first folding plate and the second folding plate to rotate relative to each other, thereby improving the convenience of using the folding shopping cart.

[0024] Optionally, a guiding surface is provided on the surface of the positioning plate facing the heat dissipation motor. The inclined height of the guiding surface decreases as the distance to the heat dissipation motor decreases. The guiding surface can abut against the surface of the heat dissipation motor and guide the positioning plate to slide towards the positioning groove.

[0025] By adopting the above technical solution, the inclined height of the guiding surface decreases as the distance to the heat dissipation motor decreases. When the heat dissipation motor slides towards the heat dissipation impeller, the guiding surface abuts against the surface of the heat dissipation motor and guides the clamping plate to slide towards the clamping groove, and the end of the clamping plate is embedded in the clamping groove, reducing the wear between the clamping plate and the heat dissipation motor, thereby prolonging the service life of the folding shopping cart.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The positioning plate and the positioning block are provided. The outer wall of the positioning block abuts tightly against the inner wall of the positioning groove to form a limit, making it difficult for the front plate to separate from the rear plate, making it difficult for the shopping cart to unfold when encountering bumps during transportation, reducing the storage space of the shopping cart, and making it difficult for the folded shopping cart to be damaged by impact, thereby shortening the usage cost of the shopping cart;

[0028] 2. The limiting block and the limiting groove are provided. The first folding plate and the second folding plate provide support for the bottom plate, making it difficult for the bottom plate to crack due to excessive pressure, and at the same time, it is difficult for the first folding plate and the second folding plate to rotate during the use of the shopping cart, thereby improving the stability of the shopping cart during use;

[0029] 3. The clamping plate and the inflatable airbag are provided. One end of the clamping plate is located in the rotating cavity, and the other end of the clamping plate is located in the clamping cavity, making it difficult for the first folding plate and the second folding plate to rotate, thereby improving the stability of the shopping cart during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram in the embodiment of the present application.

[0031] Figure 2 is the overall structural schematic diagram in the embodiment of the present application, mainly showing the bottom plate.

[0032] Figure 3 is the partial structural schematic diagram in the embodiment of the present application, mainly showing the clamping assembly.

[0033] Figure 4 is the partial sectional view in the embodiment of the present application, mainly showing the starting assembly.

[0034] Figure 5 is the partial structural schematic diagram in the embodiment of the present application, mainly showing the positioning assembly.

[0035] Figure 6 is the partial sectional view in the embodiment of the present application, mainly showing the heat dissipation assembly.

[0036] Description of reference numerals: 1, bottom plate; 2, front plate; 3, rear plate; 4, cover plate; 5, folding assembly; 51, positioning block; 52, positioning plate; 521, positioning groove; 53, first folding plate; 531, rotating cavity; 532, clamping groove; 54, second folding plate; 541, limiting groove; 542, clamping cavity; 543, sliding cavity; 544, starting cavity; 545, clamping cavity; 6, limiting block; 7, clamping assembly; 71, clamping plate; 711, air flow passage; 72, inflatable airbag; 73, first elastic member; 74, inflatable piston; 75, sliding rod; 751, tooth groove; 76, second elastic member; 77, pressing rod; 8, starting assembly; 81, starting rack; 82, starting gear; 83, third elastic member; 9, heat dissipation assembly; 91, heat dissipation impeller; 911, embedding groove; 92, heat dissipation motor; 93, embedding block; 94, contact switch; 10, clamping assembly; 101, clamping plate; 102, fourth elastic member; 1011, guiding surface. Detailed implementation manners

[0037] The following further describes the present application in detail with reference to Figure 1-6 the accompanying drawings.

[0038] An embodiment of the present application discloses a folding shopping cart. Referring to Figure 1 and Figure 2 , the folding shopping cart includes a bottom plate 1, a front plate 2, a rear plate 3, a cover plate 4 and a folding assembly 5. The folding assembly 5 is connected between the front plate 2 and the rear plate 3. The folding assembly 5 can control the front plate 2 and the rear plate 3 to move away from or close to each other. The folding assembly 5 includes a positioning block 51, a positioning plate 52, two first folding plates 53 and two second folding plates 54. The ends of the two first folding plates 53 are rotatably connected to the two ends of the front plate 2 in the length direction in a one-to-one correspondence. The other ends of the two first folding plates 53 are rotatably connected to the second folding plates 54 in a one-to-one correspondence. The ends of the two second folding plates 54 away from the first folding plates 53 are rotatably connected to the two ends of the rear plate 3 in the length direction in a one-to-one correspondence. The rotation axes of the first folding plates 53 and the rotation axes of the second folding plates 54 are parallel to each other, and the rotation axes of the first folding plates 53 are parallel to the height direction of the front plate 2. The ends of the cover plate 4 and the ends of the bottom plate 1 are rotatably connected to the two ends of the front plate 2 in the height direction in a one-to-one correspondence. The rotation axis of the cover plate 4 and the rotation axis of the bottom plate 1 are parallel to each other, and the rotation axis of the cover plate 4 is parallel to the length direction of the front plate 2.

[0039] Referring to Figure 1 and Figure 2 , when the first folding plates 53 and the second folding plates 54 rotate in the direction away from each other, the surfaces of the first folding plates 53 and the surfaces of the second folding plates 54 are flush. At the same time, the bottom plate 1 and the cover plate 4 are driven to rotate towards the rear plate 3. A storage cavity for storing items is formed among the bottom plate 1, the rear plate 3, the front plate 2, the two first folding plates 53 and the two second folding plates 54. The cover plate 4 covers the storage cavity, and the surface of the bottom plate 1 provides support for the items.

[0040] Reference Figure 1 and Figure 2 The number of the positioning plates 52 and the positioning blocks 51 can be one or two. In the embodiment of the present application, the number of the positioning plates 52 and the positioning blocks 51 is two. The two positioning plates 52 are fixed to the two ends of the rear plate 3 in the length direction of the front plate 2 in a one-to-one manner. The two positioning blocks 51 are fixed to the two ends of the front plate 2 in the length direction of the rear plate 3 in a one-to-one manner. The end surface of the positioning plate 52 protruding from the rear plate 3 is provided with a positioning groove 521 for the positioning block 51 to be embedded. When the foldable shopping cart needs to be stored, the bottom plate 1 is driven to rotate in the direction close to the front plate 2, and the surface of the bottom plate 1 is pressed against the surface of the front plate 2. The stacking plate 1 53 and the folding plate 2 54 rotate in the direction of approaching each other, and the surface of the folding plate 1 53 presses against the surface of the folding plate 2 54. At the same time, the front plate 2 and the rear plate 3 clamp the two sides of the folding plate 1 53 and the folding plate 2 54 to form a limit, and the positioning block 51 is embedded in the positioning groove 521, and the outer wall of the positioning block 51 presses against the inner wall of the positioning groove 521 to form a limit, so that the front plate 2 and the rear plate 3 are not easy to move away from each other when they are bumped during transportation, thereby ensuring the stability of the storage state of the foldable shopping cart, reducing the storage space of the shopping cart, making the folded shopping cart less likely to be damaged by impact, and shortening the use cost of the shopping cart.

[0041] Reference Figure 1 and Figure 2 The plate surface of the bottom plate 1 facing away from the cover plate 4 is integrally formed with a plurality of limit blocks 6, and the plate surfaces of the folding plate 1 53 and the folding plate 2 54 are both provided with limit grooves 541 for the limit blocks 6 to be embedded in. When the bottom plate 1 rotates toward the direction approaching the rear plate 3, the limit blocks 6 correspond to and are embedded in the limit grooves 541 one by one, and the circumferential outer walls of the limit blocks 6 are pressed against the inner walls of the limit grooves 541 to form a limit. The folding plate 1 53 and the folding plate 2 54 provide support for the bottom plate 1, thereby improving the carrying capacity of the bottom plate 1 for articles.

[0042] Reference Figure 3 and Figure 4, a clamping assembly 7 is installed between the folding plate one 53 and the folding plate two 54. The clamping assembly 7 can limit the folding plate one 53 and the folding plate two 54. The clamping assembly 7 includes a clamping plate 71, an inflatable airbag 72, an elastic member one 73, an inflatable piston 74, a sliding rod 75, an elastic member two 76 and a pressing rod 77. A rotating cavity 531 for the end of the clamping plate 71 to rotate is formed on the plate surface of the folding plate one 53 facing the folding plate one 53. The rotation axis of the clamping plate 71 is parallel to the rotation axis of the bottom plate 1. A clamping cavity 542 for the end of the clamping plate 71 to be inserted is formed on the plate surface of the folding plate two 54 facing the rotating cavity 531. The material of the inflatable airbag 72 can be rubber or silica gel. In the embodiment of the present application, the material of the inflatable airbag 72 is rubber, which has a certain deformation ability. The inflatable airbag 72 is fixed on the end face of the clamping plate 71 located in the clamping cavity 542, and the surface of the inflatable airbag 72 can abut against the inner wall of the clamping cavity 542 to form a limit.

[0043] Refer to Figure 4 and Figure 5 , the material of the inflatable piston 74 can be rubber or silica gel. In the embodiment of the present application, the material of the inflatable piston 74 is rubber, which has a certain deformation ability. An air flow passage 711 for the inflatable piston 74 to slide is formed on the plate surface of the clamping plate 71 located in the clamping cavity 542. The sliding direction of the inflatable piston 74 is parallel to the rotation axis of the folding plate two 54. The air flow passage 711 communicates with the inner cavity of the inflatable airbag 72. The elastic member one 73 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member one 73 is a compression spring, which has a certain deformation ability. One end of the elastic member one 73 in the direction of the elastic force is fixed on the inner wall of the air flow passage 711, and the other end of the elastic member one 73 in the direction of the elastic force is fixed on the surface of the inflatable piston 74. The elastic member one 73 has an elastic force to drive the inflatable piston 74 to slide away from the air flow passage 711, and the end of the inflatable piston 74 protrudes from the plate surface of the clamping plate 71.

[0044] Refer to Figure 4 and Figure 5 , a sliding cavity 543 for the sliding rod 75 to slide is formed on the plate surface of the folding plate two 54. The sliding direction of the sliding rod 75 is parallel to the sliding direction of the inflatable piston 74. The end of the pressing rod 77 is rotatably connected to the end of the sliding rod 75 protruding from the folding plate two 54. The rotation axis of the pressing rod 77 is parallel to the length direction of the folding plate two 54; the elastic member two 76 can be a tension spring or a torsion spring. In the embodiment of the present application, the elastic member two 76 is a torsion spring, which has a certain deformation ability. The elastic coefficient of the elastic member two 76 is greater than that of the elastic member one 73. One end of the elastic member two 76 in the direction of the elastic force is connected to the rod surface of the sliding rod 75, and the other end of the elastic member two 76 in the direction of the elastic force is connected to the surface of the rotation axis of the pressing rod 77. The elastic member two 76 has an elastic force to drive the pressing rod 77 to rotate towards the clamping plate 71.

[0045] Refer toFigure 4 and Figure 5 When the end of the clamping plate 71 is embedded in the clamping cavity 542, it drives the sliding rod 75 to slide away from the sliding cavity 543. The rotating shaft of the abutting rod 77 protrudes from the surface of the second folding plate 54. The limiting effect of the inner wall of the sliding cavity 543 on the abutting rod 77 disappears. The elastic force of the second elastic member 76 drives the abutting rod 77 to rotate towards the clamping plate 71. The rod surface of the abutting rod 77 abuts against the surface of the inflatable piston 74 and drives the inflatable piston 74 to slide towards the air flow passage 711. The air pressure in the air flow passage 711 increases. The air in the air flow passage 711 enters the inner cavity of the inflatable airbag 72. The surface of the inflatable airbag 72 is pressurized and expanded and abuts against the inner wall of the clamping cavity 542 to form a limit, making it difficult for the clamping plate 71 to rotate in the clamping cavity 542, thereby improving the limiting stability of the end of the clamping plate 71 in the clamping cavity 542.

[0046] Referring to Figure 4 and Figure 5 As shown in FIGS. and, the second folding plate 54 is provided with a starting assembly 8. The starting assembly 8 can control the sliding of the sliding rod 75. The starting assembly 8 includes a starting rack 81, a starting gear 82 and a third elastic member 83. The inner wall of the clamping cavity 542 facing the clamping plate 71 is provided with a starting cavity 544 for the starting rack 81 to slide. The sliding direction of the starting rack 81 is parallel to the sliding direction of the sliding rod 75. The third elastic member 83 can be a compression spring or a tension spring. In the embodiment of the present application, the third elastic member 83 is a compression spring and has a certain deformation ability. The elastic coefficient of the third elastic member 83 is greater than the elastic coefficient of the second elastic member 76. One end of the third elastic member 83 in the direction of the elastic force is fixed on the surface of the second folding plate 54, and the other end of the third elastic member 83 in the direction of the elastic force is fixed on the surface of the starting rack 81. The third elastic member 83 has an elastic force to drive the starting rack 81 to slide away from the starting cavity 544, and the end of the starting rack 81 protrudes from the inner wall of the clamping cavity 542.

[0047] Referring to Figure 4 and Figure 5 As shown in FIGS. and, the starting cavity 544 communicates with the sliding cavity 543. The starting gear 82 is rotatably connected to the inner wall of the starting cavity 544. The axis of rotation of the starting gear 82 is parallel to the axis of rotation of the clamping plate 71. The starting gear 82 meshes with the starting rack 81. The sliding rod 75 and the starting rack 81 are located on both sides of the starting gear 82, and a tooth groove 751 meshing with the starting gear 82 is provided on the rod surface of the sliding rod 75. When the end of the clamping plate 71 is embedded in the clamping cavity 542, the surface of the clamping plate 71 abuts against the end face of the starting rack 81. The starting rack 81 slides towards the starting cavity 544 under the pressure of the clamping plate 71. The end face of the starting rack 81 is flush with the inner wall of the clamping cavity 542. The starting gear 82 rotates, driving the sliding rod 75 to slide away from the sliding cavity 543, realizing the directional sliding of the sliding rod 75, without the need for the user to manually control the sliding of the sliding rod 75, thereby improving the simplicity of using the folding shopping cart.

[0048] Refer to Figure 5 and Figure 6 , the folding plate two 54 is equipped with a heat dissipation component 9. The heat dissipation component 9 can drive the air flow in the storage cavity. The heat dissipation component 9 includes a heat dissipation impeller 91, a heat dissipation motor 92, an inlay block 93 and a contact switch 94. The starting cavity 544 penetrates the inner wall of the folding plate two 54 along the depth direction and communicates with the storage cavity. The heat dissipation impeller 91 is rotatably connected to the inner wall of the folding plate two 54 facing the storage cavity. The rotation axis of the heat dissipation impeller 91 and the sliding direction of the starting rack 81 are parallel to each other. The heat dissipation motor 92 is fixed to the surface of the starting rack 81 facing the heat dissipation impeller 91 by bolts. The axis of the heat dissipation motor 92 coincides with the rotation axis of the heat dissipation impeller 91. The inlay block 93 is fixed on the motor shaft of the heat dissipation motor 92. An inlay groove 911 for the inlay block 93 to be embedded is provided on the surface of the rotation shaft of the heat dissipation impeller 91. The contact switch 94 is fixed to the inner wall of the inlay groove 911. The contact switch 94 is electrically connected to the heat dissipation motor 92.

[0049] Refer to Figure 5 and Figure 6 , when the starting rack 81 slides towards the direction close to the starting cavity 544 and the surface of the starting rack 81 is flush with the inner wall of the starting cavity 544, it drives the heat dissipation motor 92 close to the heat dissipation impeller 91. The inlay block 93 is embedded in the inlay groove 911. The outer wall of the circumferential direction of the inlay block 93 abuts against the inner wall of the inlay groove 911 to form a limit, realizing the fixation of the heat dissipation motor 92 and the heat dissipation impeller 91. At the same time, the contact switch 94 abuts against the inlay block 93 and conducts, the heat dissipation motor 92 is powered on and runs, driving the heat dissipation impeller 91 to rotate. The heat dissipation impeller 91 drives the air flow in the storage cavity, making the items in the storage cavity not easy to heat up and be damaged, thus ensuring the stability of the items stored in the storage cavity, realizing the directional opening of the heat dissipation impeller 91, reducing the energy loss, and thus reflecting the concept of energy saving.

[0050] Refer to Figure 5 and Figure 6, the folding plate two 54 is installed with a clamping component 10. The clamping component 10 can limit the folding plate one 53 and the folding plate two 54 from approaching each other. The clamping component 10 includes a clamping plate 101 and an elastic member four 102. A clamping cavity 545 for the clamping plate 101 to slide is formed on the plate surface of the folding plate two 54 facing the storage cavity. The sliding direction of the clamping plate 101 is parallel to the rotation axis of the pressing rod 77. The depth direction of the clamping cavity 545 penetrates through the outer wall of the folding plate two 54 towards the direction close to the folding plate one 53. A clamping groove 532 for the end of the clamping plate 101 to be embedded is formed on the surface of the folding plate one 53 facing the clamping cavity 545. The elastic member four 102 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member four 102 is a compression spring and has a certain deformation ability. One end in the elastic force direction of the elastic member four 102 is fixed on the plate surface of the folding plate two 54, and the other end in the elastic force direction of the elastic member four 102 is fixed on the plate surface of the clamping plate 101. The elastic member four 102 has an elastic force to drive the clamping plate 101 to slide away from the clamping groove 532, and there is a tendency for the end of the clamping plate 101 to protrude from the plate surface of the folding plate two 54.

[0051] Referring to Figure 5 and Figure 6 , a guiding surface 1011 is provided on the surface of the clamping plate 101 facing the heat dissipation motor 92. The inclined height of the guiding surface 1011 decreases as the distance to the heat dissipation motor 92 decreases. When the heat dissipation motor 92 slides towards the direction close to the heat dissipation impeller 91, the guiding surface 1011 abuts against the surface of the heat dissipation motor 92 and guides the clamping plate 101 to slide towards the direction close to the clamping groove 532. The end of the clamping plate 101 is embedded in the clamping groove 532, and the plate surface of the clamping plate 101 abuts against the inner wall of the clamping groove 532 to form a limit, limiting the folding plate one 53 and the folding plate two 54 from rotating towards each other, thereby ensuring the stability of the folding shopping cart in the use state, reducing the wear between the heat dissipation motor 92 and the clamping plate 101, and thus prolonging the service life of the folding shopping cart.

[0052] The implementation principle of a folding shopping cart in the embodiment of the present application is as follows: When the folding shopping cart needs to be stored, the bottom plate 1 is driven to rotate towards the direction close to the front plate 2. The plate surface of the bottom plate 1 abuts against the plate surface of the front plate 2. The folding plate one 53 and the folding plate two 54 rotate towards each other. The plate surface of the folding plate one 53 abuts against the plate surface of the folding plate two 54. At the same time, the front plate 2 and the rear plate 3 clamp both sides of the folding plate one 53 and the folding plate two 54 to form a limit, and the positioning block 51 is embedded in the positioning groove 521. The outer wall of the positioning block 51 abuts against the inner wall of the positioning groove 521 to form a limit, so that the front plate 2 and the rear plate 3 are not easily separated from each other when being jolted during transportation, ensuring the stability of the folding shopping cart in the storage state, reducing the storage space of the shopping cart, making the folded shopping cart not easily damaged by impact, and shortening the use cost of the shopping cart.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A foldable shopping cart, characterized in that: The folding assembly comprises a bottom plate, a front plate, a rear plate and a folding assembly, wherein the folding assembly comprises a positioning plate, a positioning block, two folding plates 1 and two folding plates 2, the ends of the two folding plates 1 are rotatably connected to the two sides of the front plate in a one-to-one correspondence, the rotation axis of the folding plate 1 and the height direction of the front plate are parallel to each other, the other end of the folding plate 1 is rotatably connected to the ends of the folding plates 2 in a one-to-one correspondence, the rotation axis of the folding plate 2 and the rotation axis of the folding plate 1 are parallel to each other, the other ends of the two folding plates 2 are rotatably connected to the two sides of the rear plate in a one-to-one correspondence, the bottom plate is rotatably connected to the plate surface of the front plate, the rotation axis of the bottom plate and the length direction of the front plate are parallel to each other, and the positioning plate is connected to the rear plate toward the front plate The plate surface of the positioning block is connected to the plate surface of the front plate facing the positioning plate, and the surface of the positioning plate protruding from the rear plate is provided with a positioning groove for the positioning block to be embedded in. When the bottom plate is rotated in the direction close to the front plate and the folding plate one and the folding plate two are folded in the direction close to each other, the front plate and the rear plate are close to each other, the positioning block is embedded in the positioning groove, and the circumferential outer wall of the positioning block is pressed against the inner wall of the positioning groove to form a limit position; a clamping assembly is connected between the folding plate one and the folding plate two, and the clamping assembly includes a clamping plate and an inflatable airbag, and the plate surface of the folding plate one facing the folding plate two is provided with a rotating cavity for the clamping plate to rotate, and the rotation axis of the clamping plate and the rotation axis of the bottom plate The folding plate is parallel to each other, and the two surfaces of the folding plate are provided with a clamping cavity for the clamping plate to be embedded, and the inflatable airbag is connected to the surface of the clamping plate close to the clamping cavity. When the clamping plate is embedded in the clamping cavity, the surface of the inflatable airbag presses against the inner wall of the clamping cavity to form a limit. The clamping assembly also includes an elastic part and an inflatable piston. The surface of the clamping plate is provided with an inflatable flow channel for the inflatable piston to slide, and the inflatable flow channel is connected to the inner cavity of the inflatable airbag. One end of the elastic part in the elastic force direction is connected to the inner wall of the inflatable flow channel, and the other end of the elastic part in the elastic force direction is connected to the surface of the inflatable piston. The elastic part has elastic force to drive the inflatable piston to slide in the direction away from the inflatable flow channel, and the inflatable The end of the air piston tends to protrude from the surface of the clamping plate; the clamping assembly also includes a sliding rod, an elastic member 2 and a clamping rod. The surface of the folding plate 2 is provided with a sliding cavity for the sliding rod to slide. The clamping rod is rotatably connected to the end of the sliding rod protruding from the folding plate 2. The elastic coefficient of the elastic member 2 is greater than the elastic coefficient of the elastic member 1. One end of the elastic member 2 in the elastic force direction is connected to the rod surface of the sliding rod, and the other end of the elastic member 2 in the elastic force direction is connected to the rotating shaft of the clamping rod. The elastic member 2 has an elastic force that drives the clamping rod to rotate in a direction close to the inflation piston. The rod surface of the clamping rod presses against the surface of the inflation piston and drives the inflation piston to slide in a direction close to the inflation flow channel.

2. The foldable shopping cart according to claim 1, characterized in that: The bottom plate is connected to a plate surface away from the front plate with a plurality of limit blocks at intervals, and the first plate surface and the second plate surface of the folding plate are both provided with limit grooves for the limit blocks to be embedded in, and the circumferential outer walls of the limit blocks are pressed against the inner walls of the limit grooves to form a positioning.

3. The foldable shopping cart according to claim 1, characterized in that: The folding plate second is connected with a starting component, and the starting component includes a starting rack, a starting gear and an elastic member three, and the inner wall of the clamping cavity is provided with a starting cavity for sliding the starting rack, and the sliding direction of the starting rack and the sliding direction of the sliding rod are parallel to each other. The elastic coefficient of the elastic member three is greater than the elastic coefficient of the elastic member two, one end of the elastic force direction of the elastic member three is connected to the plate surface of the folding plate second, and the other end of the elastic force direction of the elastic member three is connected to the surface of the starting rack. The elastic member three has the tendency of elastically driving the starting rack to slide in the direction away from the starting cavity, and the end of the starting rack protrudes from the inner wall of the clamping cavity. The starting cavity is connected to the sliding cavity, the starting gear is rotatably connected to the inner wall of the starting cavity, the starting gear meshes with the starting rack, and the rod surface of the sliding rod is provided with a tooth groove meshing with the starting gear. When the end of the clamping plate is embedded in the clamping cavity, the plate surface of the clamping plate abuts against the surface of the starting rack and drives the starting rack to slide in the direction close to the starting cavity, thereby driving the sliding rod to slide in the direction away from the sliding cavity.

4. The foldable shopping cart according to claim 3, characterized in that: The second folding plate is connected with a heat dissipation component, and the heat dissipation component includes a heat dissipation impeller. The heat dissipation impeller is rotatably connected to the second plate surface of the folding plate. When the heat dissipation impeller rotates, it can drive the air flow in the inner cavity of the shopping cart.

5. The foldable shopping cart according to claim 4, characterized in that: The heat dissipation assembly also includes a heat dissipation motor, an insert and a contact switch. The sliding directions of the axis of the heat dissipation impeller and the starting rack are parallel to each other. The starting cavity runs through the two inner walls of the folding plate. The heat dissipation motor is connected to the surface of the starting rack facing the heat dissipation impeller. The axis of the heat dissipation motor and the axis of the heat dissipation impeller coincide with each other. The insert is connected to the surface of the motor shaft of the heat dissipation motor. The surface of the rotating shaft of the heat dissipation impeller is provided with an insert groove for the insert to be embedded. The contact switch is connected to the inner wall of the insert groove. The contact switch is electrically connected to the heat dissipation motor. When the starting rack slides toward the direction close to the starting cavity, the insert is embedded in the insert groove, the contact switch abuts against the insert and is turned on, and the heat dissipation motor is energized and runs.

6. The foldable shopping cart according to claim 5, characterized in that: The folding plate two is connected with a locking component, and the locking component includes a locking plate and an elastic member four. The surface of the folding plate two facing the heat dissipation motor is provided with a locking cavity for the locking plate to slide, and the surface of the folding plate one is provided with a locking groove for the end of the locking plate to be embedded in. One end of the elastic member four in the elastic direction is connected to the board surface of the folding plate two, and the other end of the elastic member four in the elastic direction is connected to the board surface of the locking plate. The elastic member four has a tendency of elastically driving the locking plate to slide in the direction away from the locking groove. When the heat dissipation motor is close to the heat dissipation impeller, the surface of the heat dissipation motor abuts against the board surface of the locking plate and drives the locking plate to slide in the direction close to the locking groove, the end of the locking plate is embedded in the locking groove, and the board surface of the locking plate presses against the inner wall of the locking groove to form a limit.

7. The foldable shopping cart according to claim 6, characterized in that: A guide surface is provided on the surface of the locking plate facing the heat dissipation motor, and the guide surface can abut against the surface of the heat dissipation motor and guide the locking plate to slide in a direction close to the locking groove.

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