Folding shopping cart

Abstract

The invention relates to the field of shopping carts, in particular to a folding shopping cart which comprises a bottom plate, a front plate, a rear plate and a folding assembly, the folding assembly comprises a positioning plate, a positioning block, two first folding plates and two second folding plates, and one ends of the two folding plates are rotationally connected to the two sides of the front plate in a one-to-one correspondence mode; the other ends of the first folding plates are rotationally connected with the ends of the second folding plates in a one-to-one correspondence mode, the other ends of the two second folding plates are rotationally connected to the two sides of the rear plate in a one-to-one correspondence mode, the bottom plate is rotationally connected to the surface of the front plate, the positioning plate is connected to the surface, facing the front plate, of the rear plate, the positioning block is connected to the surface, facing the positioning plate, of the front plate, and a positioning groove is formed in the surface of the positioning plate. According to the shopping cart, the positioning plates and the positioning blocks are arranged, and the circumferential outer walls of the positioning blocks abut against the inner walls of the positioning grooves to form limiting, so that the front plate is not prone to being separated from the rear plate, the shopping cart is not prone to being unfolded when bumping in the transportation process, the storage space of the shopping cart is reduced, the folded shopping cart is not prone to being damaged due to collision, and the use cost of the shopping cart is reduced.

Description

Technical Field

[0001] The present application relates to the field of shopping carts, and in particular to a foldable shopping cart. Background Art

[0002] A shopping cart is a tool that people often use when they go out shopping. Especially when carrying some heavier items, the items can be placed in the inner cavity of the shopping cart, making the shopping cart bring great convenience to people.

[0003] In order to facilitate the storage of shopping carts, foldable shopping carts are currently widely used. However, the folded shopping cart is easy to unfold when encountering bumps during transportation, and the unfolded shopping cart is easily damaged by external impact, thereby increasing the use cost of the shopping cart. Summary of the invention

[0004] In order to improve the problem that a folded shopping cart is easily unfolded when encountering bumps, the present application provides a foldable shopping cart.

[0005] The present application provides a foldable shopping cart, which adopts the following technical solution: A foldable shopping cart 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 end of the folding plate 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, and the bottom plate is provided with a plurality of folding plates. The plate is rotatably connected to the 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, 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 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 rotates toward the direction approaching the front plate and the folding plate one and the folding plate two are folded toward the direction approaching each other, the front plate and the rear plate approach each other, the positioning block is embedded in the positioning groove, and the circumferential outer wall of the positioning block presses against the inner wall of the positioning groove to form a limit.

[0006] By adopting the above technical solution, when the shopping cart is in use, the folding plate one and the folding plate two are driven to rotate in the direction away from each other, and the surface of the folding plate one is flush with the surface of the folding plate two, 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 the direction away from the front plate, and the surface of the bottom plate provides support for the items, thereby realizing the opening of the shopping cart; when the shopping cart needs to be stored, the bottom plate is driven to rotate in the direction close to the front plate, and the surface of the bottom plate abuts against the surface of the front plate to form preliminary storage, and at the same time the folding plate one and the folding plate two are moved towards each other. When the folding plate is folded in the direction of approaching, the first folding plate surface is pressed against the second folding plate surface, and the first folding plate surface and the front plate surface clamp the two sides of the bottom plate to form a limit, so that the bottom plate is not easy to deflect. At the same time, the front plate is close to the rear plate, and the positioning block is embedded in the positioning groove. The circumferential outer wall of the positioning block is pressed against the inner wall of the positioning groove to form a limit, so that the front plate is not easy to separate from the rear plate, and the shopping cart is not easy to unfold when encountering bumps during transportation, which reduces the storage space of the shopping cart and makes the folded shopping cart less likely to be damaged by impact, thereby shortening the use cost of the shopping cart.

[0007] Optionally, a plurality of limit blocks are connected to the plate surface of the bottom plate away from the front plate at intervals, and both the plate surface of the folding plate one and the plate surface of the folding plate two are provided with limit grooves for the limit blocks to be embedded, and the circumferential outer walls of the limit blocks are pressed against the inner walls of the limit grooves to form positioning.

[0008] By adopting the above technical scheme, when the folding plate 1 and the folding plate 2 rotate in the direction away from each other, the surface of the folding plate 1 is flush with the surface of the folding plate 2, and the bottom plate rotates in the direction away from the front plate. The limit blocks correspond to and are embedded in the limit grooves one by one, and the circumferential outer walls of the limit blocks are pressed against the inner walls of the limit grooves to form a positioning. The folding plate 1 and the folding plate 2 provide support for the bottom plate, so that the bottom plate is not easily cracked due to excessive pressure. At the same time, the folding plate 1 and the folding plate 2 are not easy to rotate during the use of the shopping cart, thereby improving the stability of the shopping cart.

[0009] Optionally, 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. A rotating cavity for the clamping plate to rotate is provided on the plate surface of the folding plate one facing the folding plate two, and the rotating axis of the clamping plate and the rotating axis of the bottom plate are parallel to each other. A clamping cavity for the clamping plate to be embedded in is provided on the plate surface of the folding plate two, 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] By adopting the above technical scheme, when the end of the clamping plate is embedded in the clamping cavity, the sliding rod is driven to slide in the direction away from the sliding cavity, driving the clamping rod to slide in the direction away from the sliding cavity, and the rotating axis of the clamping rod protrudes from the second plate surface of the folding plate. The second elastic force of the elastic member drives the clamping rod to rotate in the 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 the direction close to the inflation flow channel. The air pressure in the inflation flow channel increases, and the air in the inflation flow channel enters the inner cavity of the inflatable airbag. The inflatable airbag is pressurized and expanded and presses against the inner wall of the clamping cavity to form a limit, so that the inflation piston is not easy to deviate in the inflation flow channel, thereby improving the limit stability of the inflation piston in the inflation flow channel.

[0015] The camming gear of the embodiment of the present invention is a gear mounted on the second folding plate, and the gear engaged with the toothed wheel is engaged with the toothed wheel on the first folding plate and the gear engaged with the toothed wheel on the second folding plate.

[0016] By adopting the above technical solution, when the clamping plate rotates toward the clamping cavity, the clamping plate surface abuts against the end face of the starting rack and drives the starting rack to slide toward the starting cavity, the starting rack engages the starting gear, driving the starting gear to rotate, and the inner wall of the tooth groove engages the starting gear, driving the sliding rod to slide in the direction away from the sliding cavity, thereby realizing directional sliding of the sliding rod, without the need for the user to manually drive the sliding rod to slide, thereby improving the convenience of using the foldable shopping cart.

[0017] Optionally, the second folding plate is connected to a heat dissipation component, and the heat dissipation component includes a heat dissipation impeller, and the heat dissipation impeller is rotatably connected to the surface of the second folding plate. When the heat dissipation impeller rotates, it can drive the air flow in the inner cavity of the shopping cart.

[0018] By adopting the above technical solution, the heat dissipation impeller rotates on the second plate surface of the folding plate, driving the air flow in the shopping cart, so that the items in the shopping cart are not easily damaged by heating up, thereby ensuring the stability of the storage of the items in the shopping cart.

[0019] Optionally, the heat dissipation assembly also includes a heat dissipation motor, an embedding block 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 passes 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 motor axis of the heat dissipation motor coincides with the axis of the heat dissipation impeller, the embedding block 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 embedding groove for the embedding block to be embedded, the contact switch is connected to the inner wall of the embedding groove, the contact switch is electrically connected to the heat dissipation motor, and when the starting rack slides toward the starting cavity, the embedding block is embedded in the embedding groove, the contact switch abuts the embedding block and is turned on, and the heat dissipation motor is energized and runs.

[0020] By adopting the above technical scheme, when the end of the clamping plate is embedded in 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 in the direction close to the starting cavity, driving the heat dissipation motor to slide in the direction close to the heat dissipation impeller, and the embedded block is embedded in the embedded groove, and the circumferential outer wall of the embedded block abuts against the inner wall of the embedded groove to form a limit, thereby fixing the heat dissipation motor and the heat dissipation impeller. At the same time, the contact switch abuts against the embedded block and is turned on, the heat dissipation motor is energized and runs, driving the heat dissipation impeller to rotate, realizing directional starting of the heat dissipation impeller, reducing energy loss, and thus embodying the concept of energy saving.

[0021] Optionally, the folding plate 2 is connected to a locking component, the locking component includes a locking plate and an elastic member 4, the surface of the folding plate 2 facing the heat dissipation motor is provided with a locking cavity for the locking plate to slide, the surface of the folding plate 1 is provided with a locking groove for the end of the locking plate to be embedded in, one end of the elastic member 4 in the elastic force direction is connected to the board surface of the folding plate 2, and the other end of the elastic member 4 in the elastic force direction is connected to the board surface of the locking plate, and the elastic member 4 has a tendency of elastically driving the locking plate to slide in the direction away from the locking groove, and when the heat dissipation motor approaches 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.

[0022] By adopting the above technical solution, when the heat dissipation motor slides toward the direction close to the heat dissipation impeller, the embedding block is embedded in the embedding groove, and at the same time, the surface of the heat dissipation motor abuts against the surface of the locking plate and drives the locking plate to slide toward the direction close to the locking groove, and the end of the locking plate is embedded in the inner wall of the locking groove, and the surface of the locking plate abuts against the inner wall of the locking groove to form a limit, so that the folding plate one and the folding plate two are not easy to rotate, thereby improving the convenience of using the folding shopping cart.

[0023] Optionally, a guide surface is provided on the surface of the positioning plate facing the heat dissipation motor, and the inclined height of the guide surface decreases as the distance to the heat dissipation motor decreases. The guide surface can abut the surface of the heat dissipation motor and guide the positioning plate to slide toward the positioning slot.

[0024] By adopting the above technical solution, the inclination height of the guide surface decreases as the distance to the heat dissipation motor decreases. When the heat dissipation motor slides toward the heat dissipation impeller, the guide surface abuts against the surface of the heat dissipation motor and guides the locking plate to slide toward the locking slot. The end of the locking plate is embedded in the locking slot, reducing the wear between the locking plate and the heat dissipation motor, thereby extending the service life of the foldable shopping cart.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The positioning plate and the positioning block are arranged such that the outer wall of the positioning block is pressed against the inner wall of the positioning groove to form a limit position, so that the front plate is not easy to separate from the rear plate, and the shopping cart is not easy to unfold when encountering bumps during transportation, which reduces the storage space of the shopping cart and makes the folded shopping cart less likely to be damaged by impact, thereby reducing the use cost of the shopping cart; 2. The setting of the limit block and the limit groove, the folding plate 1 and the folding plate 2 provide support for the bottom plate, so that the bottom plate is not easy to crack due to excessive pressure. At the same time, the folding plate 1 and the folding plate 2 are not easy to rotate during the use of the shopping cart, thereby improving the stability of the shopping cart; 3. The clamping plate and the inflatable airbag are arranged such that 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, so that the folding plate 1 and the folding plate 2 are not easy to rotate, thereby improving the stability of the shopping cart. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure in the embodiment of the present application, mainly showing the bottom plate.

[0028] Figure 3 It is a schematic diagram of the local structure in an embodiment of the present application, mainly showing the clamping assembly.

[0029] Figure 4 It is a partial cross-sectional view in an embodiment of the present application, mainly showing the starting component.

[0030] Figure 5 It is a schematic diagram of the local structure in the embodiment of the present application, mainly showing the locking component.

[0031] Figure 6 It is a partial cross-sectional view in an embodiment of the present application, mainly showing the heat dissipation component.

[0032] 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, folding plate 1; 531, rotating cavity; 532, clamping groove; 54, folding plate 2; 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, inflation flow channel; 72 , inflatable airbag; 73, elastic part one; 74, inflatable piston; 75, sliding rod; 751, tooth groove; 76, elastic part two; 77, tightening rod; 8, starting assembly; 81, starting rack; 82, starting gear; 83, elastic part three; 9, heat dissipation assembly; 91, heat dissipation impeller; 911, embedded groove; 92, heat dissipation motor; 93, embedded block; 94, contact switch; 10, locking assembly; 101, locking plate; 102, elastic part four; 1011, guide surface. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The present application embodiment discloses a foldable shopping cart. 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 folding plates 1 53 and two folding plates 2 54. The ends of the two folding plates 1 53 are rotatably connected to the two ends of the length direction of the front plate 2 in a one-to-one correspondence. The other ends of the two folding plates 1 53 are rotatably connected to the folding plates 2 54 in a one-to-one correspondence. The ends of the two folding plates 2 54 away from the folding plate 1 53 are rotatably connected at the two ends of the length direction of the rear plate 3 in a one-to-one manner, the rotation axis of the folding plate 1 53 and the rotation axis of the folding plate 2 54 are parallel to each other, and the rotation axis of the folding plate 1 53 and the height direction of the front plate 2 are parallel to each other, the end of the cover plate 4 and the end of the bottom plate 1 are rotatably connected at the two ends of the height direction of the front plate 2 in a one-to-one manner, 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 and the length direction of the front plate 2 are parallel to each other.

[0035] Reference Figure 1 and Figure 2 When the folding plate 1 53 and the folding plate 2 54 rotate in a direction away from each other, the surface of the folding plate 1 53 and the surface of the folding plate 2 54 are flush, and at the same time, the bottom plate 1 and the cover plate 4 are driven to rotate in a direction close to the rear plate 3, and a storage cavity for storing items is formed between the bottom plate 1, the rear plate 3, the front plate 2, the two folding plates 1 53 and the two folding plates 2 54, the cover plate 4 covers the storage cavity, and the surface of the bottom plate 1 provides support for the items.

[0036] 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.

[0037] 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.

[0038] Reference Figure 3 and Figure 4A clamping assembly 7 is installed between the folding plate 1 53 and the folding plate 2 54, and the clamping assembly 7 can limit the folding plate 1 53 and the folding plate 2 54. The clamping assembly 7 includes a clamping plate 71, an inflatable airbag 72, an elastic member 73, an inflatable piston 74, a sliding rod 75, an elastic member 2 76 and a clamping rod 77. The folding plate 1 53 is provided with a rotating cavity 531 for the end of the clamping plate 71 to rotate on the plate surface facing the folding plate 1 53. The rotation axis of the clamping plate 71 and the rotation axis of the bottom plate 1 are parallel to each other. The folding plate 2 54 is provided with a clamping cavity 542 for the end of the clamping plate 71 to be embedded in the plate surface facing the rotation cavity 531. The material of the inflatable airbag 72 can be rubber or silicone. 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 to the end face of the clamping plate 71 located in the clamping cavity 542, and the surface of the inflatable airbag 72 can be pressed against the inner wall of the clamping cavity 542 to form a limit.

[0039] Reference Figure 4 and Figure 5 The material of the inflatable piston 74 can be rubber or silicone. In the embodiment of the present application, the material of the inflatable piston 74 is rubber, which has a certain deformation ability. The plate surface of the clamping plate 71 located in the clamping cavity 542 is provided with an inflation flow channel 711 for the inflatable piston 74 to slide. The sliding direction of the inflatable piston 74 and the rotation axis of the folding plate 2 54 are parallel to each other. The inflation flow channel 711 is connected to the inner cavity of the inflatable airbag 72. The elastic member 73 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 73 is a compression spring with a certain deformation ability. One end of the elastic member 73 in the elastic direction is fixed to the inner wall of the inflation flow channel 711, and the other end of the elastic member 73 in the elastic direction is fixed to the surface of the inflatable piston 74. The elastic member 73 has the elastic force to drive the inflatable piston 74 to slide in the direction away from the inflation flow channel 711, and the end of the inflatable piston 74 tends to protrude from the plate surface of the clamping plate 71.

[0040] Reference Figure 4 and Figure 5 The folding plate 54 is provided with a sliding cavity 543 for the sliding of the sliding rod 75. The sliding direction of the sliding rod 75 and the sliding direction of the inflatable piston 74 are parallel to each other. The end of the clamping rod 77 is rotatably connected to the end of the sliding rod 75 protruding from the folding plate 54. The rotation axis of the clamping rod 77 and the length direction of the folding plate 54 are parallel to each other; the elastic member 76 can be a tension spring or a torsion spring. In the embodiment of the present application, the elastic member 76 is a torsion spring with a certain deformation ability. The elastic coefficient of the elastic member 76 is greater than the elastic coefficient of the elastic member 73. One end of the elastic member 76 in the elastic force direction is connected to the rod surface of the sliding rod 75, and the other end of the elastic member 76 in the elastic force direction is connected to the surface of the rotating axis of the clamping rod 77. The elastic member 76 has a tendency of elastic force driving the clamping rod 77 to rotate in the direction close to the clamping plate 71.

[0041] Reference Figure 4 and Figure 5 When the end of the clamping plate 71 is embedded in the clamping cavity 542, the sliding rod 75 is driven to slide in the direction away from the sliding cavity 543, and the rotating axis of the clamping rod 77 protrudes out of the surface of the folding plate 2 54. The limiting effect of the inner wall of the sliding cavity 543 on the clamping rod 77 disappears, and the elastic force of the elastic member 2 76 drives the clamping rod 77 to rotate in the direction close to the clamping plate 71. The surface of the clamping rod 77 abuts the surface of the inflation piston 74 and drives the inflation piston 74 to slide in the direction close to the inflation flow channel 711. The air pressure in the inflation flow channel 711 increases, and the air in the inflation flow channel 711 enters the inner cavity of the inflation airbag 72. The surface of the inflation 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.

[0042] Reference Figure 4 and Figure 5 The folding plate 54 is provided with a starting assembly 8, which can control the sliding movement of the sliding rod 75. The starting assembly 8 includes a starting rack 81, a starting gear 82 and an elastic member 3 83. The clamping cavity 542 is provided with a starting cavity 544 for the sliding movement of the starting rack 81 toward the inner wall of the clamping plate 71. The sliding direction of the starting rack 81 and the sliding direction of the sliding rod 75 are parallel to each other. The elastic member 3 83 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 3 83 is a compression spring with a certain deformation ability. The elastic coefficient of the elastic member 3 83 is greater than the elastic coefficient of the elastic member 2 76. One end of the elastic member 3 83 in the elastic direction is fixed to the plate surface of the folding plate 54, and the other end of the elastic member 3 83 in the elastic direction is fixed to the surface of the starting rack 81. The elastic member 3 83 has an elastic force to drive the starting rack 81 to slide in the direction away from the starting cavity 544, and the end of the starting rack 81 protrudes from the inner wall of the clamping cavity 542.

[0043] Reference Figure 4 and Figure 5 The starting chamber 544 is connected to the sliding chamber 543, and the starting gear 82 is rotatably connected to the inner wall of the starting chamber 544. The rotation axis of the starting gear 82 and the rotation axis of the clamping plate 71 are parallel to each other. 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 the rod surface of the sliding rod 75 is provided with a tooth groove 751 that meshes with the starting gear 82; when the end of the clamping plate 71 is embedded in the clamping chamber 542, the plate surface of the clamping plate 71 abuts against the end surface of the starting rack 81, and the starting rack 81 slides toward the direction close to the starting chamber 544 under the pressure of the clamping plate 71. The end surface of the starting rack 81 is flush with the inner wall of the clamping chamber 542, and the starting gear 82 rotates, driving the sliding rod 75 to slide in the direction away from the sliding chamber 543, thereby realizing directional sliding of the sliding rod 75, and there is no need for the user to manually control the sliding of the sliding rod 75, thereby improving the convenience of using the foldable shopping cart.

[0044] Reference Figure 5 and Figure 6 The folding plate 54 is equipped with a heat dissipation component 9, which 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 insert 93 and a contact switch 94. The starting cavity 544 penetrates the inner wall of the folding plate 54 in the depth direction and is connected to the storage cavity. The heat dissipation impeller 91 is rotatably connected to the inner wall of the folding plate 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 insert 93 is fixed on the motor shaft of the heat dissipation motor 92. The surface of the rotating shaft of the heat dissipation impeller 91 is provided with an embedding groove 911 for the embedding block 93 to be embedded. The contact switch 94 is fixed to the inner wall of the embedding groove 911, and the contact switch 94 is electrically connected to the heat dissipation motor 92.

[0045] Reference Figure 5 and Figure 6 When the starting rack 81 slides toward the direction approaching the starting chamber 544 and the surface of the starting rack 81 is flush with the inner wall of the starting chamber 544, the heat dissipation motor 92 is driven to approach the heat dissipation impeller 91, and the embedded block 93 is embedded in the embedded groove 911. The circumferential outer wall of the embedded block 93 is pressed against the inner wall of the embedded groove 911 to form a limit, thereby fixing the heat dissipation motor 92 and the heat dissipation impeller 91; at the same time, the contact switch 94 abuts against the embedded block 93 and is turned on, the heat dissipation motor 92 is energized and runs, driving the heat dissipation impeller 91 to rotate, and the heat dissipation impeller 91 drives the air in the storage chamber to flow, so that the items in the storage chamber are not easily damaged by heating up, thereby ensuring the stability of the items stored in the storage chamber, realizing the directional opening of the heat dissipation impeller 91, reducing energy loss, and thus reflecting the concept of energy saving.

[0046] Reference Figure 5 and Figure 6The folding plate 54 is provided with a positioning assembly 10, which can limit the folding plate 53 and the folding plate 54 to be close to each other. The positioning assembly 10 includes a positioning plate 101 and an elastic member 102. The folding plate 54 is provided with a positioning cavity 545 for the positioning plate 101 to slide on the plate surface facing the storage cavity. The sliding direction of the positioning plate 101 and the rotation axis of the clamping rod 77 are parallel to each other. The depth direction of the positioning cavity 545 penetrates the outer wall of the folding plate 54 in the direction close to the folding plate 53. The folding plate 53 is disposed on the surface of the positioning cavity 545 facing the storage cavity. A locking groove 532 is provided on the surface for the end of the locking plate 101 to be embedded. 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 with a certain deformation ability. One end of the elastic member four 102 in the elastic direction is fixed to the board surface of the folding plate two 54, and the other end of the elastic member four 102 in the elastic direction is fixed to the board surface of the locking plate 101. The elastic member four 102 has the elastic force to drive the locking plate 101 to slide in the direction away from the locking groove 532, and the end of the locking plate 101 tends to protrude from the board surface of the folding plate two 54.

[0047] Reference Figure 5 and Figure 6 A guide surface 1011 is provided on the surface of the positioning plate 101 facing the heat dissipation motor 92. The inclined height of the guide surface 1011 decreases as the distance to the heat dissipation motor 92 decreases. When the heat dissipation motor 92 slides toward the heat dissipation impeller 91, the guide surface 1011 abuts against the surface of the heat dissipation motor 92 and guides the positioning plate 101 to slide toward the positioning groove 532. The end of the positioning plate 101 is embedded in the positioning groove 532. The surface of the positioning plate 101 abuts against the inner wall of the positioning groove 532 to form a limit. The limiting folding plate 1 53 and the folding plate 2 54 rotate in a direction close to each other, thereby ensuring the stability of the use state of the folding shopping cart, reducing the wear between the heat dissipation motor 92 and the positioning plate 101, and thus extending the service life of the folding shopping cart.

[0048] The implementation principle of a foldable shopping cart in an embodiment of the present application is as follows: 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, the surface of the bottom plate 1 is pressed against the surface of the front plate 2, the folding plate 1 53 and the folding plate 2 54 are rotated in the direction close to each other, the surface of the folding plate 1 53 is pressed against the surface of the folding plate 2 54, and 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 is pressed 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 not easy to be damaged by impact, and shortening the use cost of the shopping cart.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foldable shopping cart, characterized in that: The invention comprises a bottom plate (1), a front plate (2), a rear plate (3) and a folding assembly (5), wherein the folding assembly (5) comprises a positioning plate (52), a positioning block (51), two folding plates (53) and two folding plates (54), the ends of the two folding plates (53) are rotatably connected to the two sides of the front plate (2) in a one-to-one manner, the rotation axis of the folding plate (53) and the height direction of the front plate (2) are parallel to each other, the other end of the folding plate (53) is rotatably connected to the end of the folding plate (54) in a one-to-one manner, the rotation axis of the folding plate (54) and the rotation axis of the folding plate (53) are parallel to each other, the other ends of the two folding plates (54) are rotatably connected to the two sides of the rear plate (3) in a one-to-one manner, the bottom plate (1) is rotatably connected to the front plate (2 ) plate surface, the rotation axis of the bottom plate (1) and the length direction of the front plate (2) are parallel to each other, the positioning plate (52) is connected to the plate surface of the rear plate (3) facing the front plate (2), the positioning block (51) is connected to the plate surface of the front plate (2) facing the positioning plate (52), and the 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 in, when the bottom plate (1) rotates in a direction close to the front plate (2), and the folding plate 1 (53) and the folding plate 2 (54) are folded in a direction close to each other, the front plate (2) and the rear plate (3) are close to each other, the positioning block (51) is embedded in the positioning groove (521), and the circumferential outer wall of the positioning block (51) is pressed against the inner wall of the positioning groove (521) to form a limit.

2. The foldable shopping cart according to claim 1, characterized in that: The plate surface of the bottom plate (1) away from the front plate (2) is connected with a plurality of limit blocks (6) at intervals, and the plate surface of the folding plate 1 (53) and the plate surface of the folding plate 2 (54) are both provided with limit grooves (541) for the limit blocks (6) to be inserted, and the circumferential outer wall of the limit block (6) is pressed against the inner wall of the limit groove (541) to form a positioning.

3. The foldable shopping cart according to claim 1, characterized in that: A clamping assembly (7) is connected between the folding plate 1 (53) and the folding plate 2 (54), and the clamping assembly (7) includes a clamping plate (71) and an inflatable airbag (72). The folding plate 1 (53) is provided with a rotating cavity (531) on the plate surface facing the folding plate 2 (54) for the clamping plate (71) to rotate, and the rotating axis of the clamping plate (71) and the rotating axis of the bottom plate (1) are parallel to each other. The plate surface of the folding plate 2 (54) is provided with a clamping cavity (542) for the clamping plate (71) to be embedded, and the inflatable airbag (72) is connected to the surface of the clamping plate close to the clamping cavity (542). When the clamping plate (71) is embedded in the clamping cavity (542), the surface of the inflatable airbag (72) is pressed against the inner wall of the clamping cavity (542) to form a limit.

4. The foldable shopping cart according to claim 3, characterized in that: The clamping assembly (7) also includes an elastic member (73) and an inflation piston (74). The surface of the clamping plate (71) is provided with an inflation channel (711) for the inflation piston (74) to slide. The inflation channel (711) is connected to the inner cavity of the inflatable airbag (72). One end of the elastic member (73) in the elastic force direction is connected to the inner wall of the inflation channel (711), and the other end of the elastic member (73) in the elastic force direction is connected to the surface of the inflation piston (74). The elastic member (73) has an elastic force that drives the inflation piston (74) to slide in a direction away from the inflation channel (711), and the end of the inflation piston (74) tends to protrude from the surface of the clamping plate (71).

5. The foldable shopping cart according to claim 4, characterized in that: The clamping assembly (7) also includes a sliding rod (75), an elastic member 2 (76) and a clamping rod (77). The folding plate 2 (54) is provided with a sliding cavity (543) for the sliding rod (75) to slide. The clamping rod (77) is rotatably connected to the end of the sliding rod (75) protruding from the folding plate 2 (54). The elastic coefficient of the elastic member 2 (76) is greater than the elastic coefficient of the elastic member 1 (73). One end of the elastic member 2 (76) in the elastic force direction is connected to the rod surface of the sliding rod (75), and the other end of the elastic member 2 (76) in the elastic force direction is connected to the rotating shaft of the clamping rod (77). The elastic member 2 (76) has an elastic force that drives the clamping rod (77) to rotate in a direction close to the inflation piston (74). The rod surface of the clamping rod (77) presses against the surface of the inflation piston (74) and drives the inflation piston (74) to slide in a direction close to the inflation flow channel (711).

6. The foldable shopping cart according to claim 5, characterized in that: The folding plate 2 (54) is connected with a starting assembly (8), and the starting assembly (8) includes a starting rack (81), a starting gear (82) and an elastic member 3 (83). The inner wall of the clamping cavity (542) is provided with a starting cavity (544) for the starting rack (81) to slide. The sliding direction of the starting rack (81) and the sliding direction of the sliding rod (75) are parallel to each other. The elastic coefficient of the elastic member 3 (83) is greater than the elastic coefficient of the elastic member 2 (76). One end of the elastic member 3 (83) in the elastic force direction is connected to the plate surface of the folding plate 2 (54), and the other end of the elastic member 3 (83) in the elastic force direction is connected to the surface of the starting rack (81). The elastic member 3 (83) has an elastic force to drive the starting rack (81) away from the starting gear. The starting gear (82) is rotatably connected to the inner wall of the starting cavity (544), and the starting gear (82) meshes with the starting gear (81). The sliding rod (75) is provided with a tooth groove (751) meshing with the starting gear (82). When the end of the clamping plate (71) is embedded in the clamping cavity (542), the clamping plate (71) abuts against the surface of the starting gear (81) and drives the starting gear (81) to slide in the direction close to the starting cavity (544), thereby driving the sliding rod (75) to slide in the direction away from the sliding cavity (543).

7. The foldable shopping cart according to claim 6, characterized in that: The second folding plate (54) is connected to a heat dissipation component (9), and the heat dissipation component (9) includes a heat dissipation impeller (91). The heat dissipation impeller (91) is rotatably connected to the surface of the second folding plate (54), and the heat dissipation impeller (91) can drive the air flow in the inner cavity of the shopping cart when it rotates.

8. The foldable shopping cart according to claim 7, characterized in that: The heat dissipation assembly (9) further comprises a heat dissipation motor (92), an insert (93) and a contact switch (94); the axis of the heat dissipation impeller (91) and the sliding direction of the starting rack (81) are parallel to each other; the starting cavity (544) penetrates the inner wall of the second folding plate (54); the heat dissipation motor (92) is connected to the surface of the starting rack (81) facing the heat dissipation impeller (91); the axis of the heat dissipation motor (92) and the axis of the heat dissipation impeller (91) coincide with each other; the insert (93) is connected to the heat dissipation motor (92) The surface of the motor shaft and the surface of the rotating shaft of the heat dissipation impeller (91) are provided with an embedding groove (911) for embedding the embedding block (93), the contact switch (94) is connected to the inner wall of the embedding groove (911), the contact switch (94) is electrically connected to the heat dissipation motor (92), when the starting rack (81) slides in a direction close to the starting chamber (544), the embedding block (93) is embedded in the embedding groove (911), the contact switch (94) abuts against the embedding block (93) and is turned on, and the heat dissipation motor (92) is energized and operates.

9. The foldable shopping cart according to claim 8, characterized in that: The folding plate 2 (54) is connected to a locking assembly (10), and the locking assembly (10) includes a locking plate (101) and an elastic member 4 (102). The surface of the folding plate 2 (54) facing the heat dissipation motor (92) is provided with a locking cavity (545) for the locking plate (101) to slide, and the surface of the folding plate 1 (53) is provided with a locking groove (532) for the end of the locking plate (101) to be embedded, and one end of the elastic member 4 (102) in the elastic force direction is connected to the surface of the folding plate 2 (54), and the other end of the elastic member 4 (102) in the elastic force direction is connected to the surface of the folding plate 2 (54). The end is connected to the surface of the locking plate (101), and the elastic member (102) has a tendency to drive the locking plate (101) to slide in a direction away from the locking groove (532) by elastic force; when the heat dissipation motor (92) approaches the heat dissipation impeller (91), the surface of the heat dissipation motor (92) abuts against the surface of the locking plate (101) and drives the locking plate (101) to slide in a direction close to the locking groove (532); the end of the locking plate (101) is embedded in the locking groove (532), and the surface of the locking plate (101) abuts against the inner wall of the locking groove (532) to form a limit.

10. The foldable shopping cart according to claim 9, characterized in that: A guide surface (1011) is provided on the surface of the positioning plate (101) facing the heat dissipation motor (92); the inclined height of the guide surface (1011) decreases as the distance to the heat dissipation motor (92) decreases; the guide surface (1011) can abut against the surface of the heat dissipation motor (92) and guide the positioning plate (101) to slide in a direction close to the positioning groove (532).

Images