Seat structure and cart

Abstract

The technical scheme belongs to the technical field of carts, and particularly relates to a seat structure and a cart, the seat structure comprises a seat body, a rear backrest and a front baffle, the seat body is provided with two edge guards, the two edge guards are located on the two sides of the seat body in a one-to-one correspondence mode, the edge guards are located between the rear backrest and the front baffle, the front baffle is provided with a front handrail, the edge guards are provided with opening grooves, and the opening grooves are communicated with the front handrail. The front handrail is provided with a first elastic locking piece allowing the front handrail to be inserted into the opening groove to limit separation of the first connecting rod, the first connecting rod is separated from the front baffle by pressing the first elastic locking piece, the rear backrest is provided with an installation rod, the edge guard is provided with an installation groove, and the installation groove is located in the end, close to the installation rod, of the edge guard. The second connecting rod is provided with a second elastic locking piece allowing the mounting rod to be inserted into the mounting groove to limit separation of the second connecting rod, the second connecting rod is separated from the rear backrest by pressing the second elastic locking piece, the overall folding and containing capacity is enhanced, and therefore the edge guard is more convenient to disassemble and assemble.

Description

Technical Field

[0001] The present technical solution relates to the technical field of strollers, and in particular to a seat structure and a stroller. Background Art

[0002] A folding chair is a lightweight, foldable seat designed for easy carrying and storage. It is a practical, convenient, space-saving seat suitable for a variety of occasions and purposes.

[0003] For example, Chinese patent CN111994161A discloses a folding stroller, which includes a body, which includes a front support part and a rear support part; a seat, which is arranged on the front support part; a push rod assembly, which includes a connecting block hinged on the rear support part, and a rod member arranged on the connecting block; a connecting part, which is fixed to the upper end of the front support part, and one end of the connecting part away from the front support part is hinged to the connecting block; the connecting part is also provided with a limiting groove; a connecting assembly, which includes a first hinged part hinged to the front support part, a second hinged part hinged to the rear support part and hinged to the first hinged part, and a third hinged part hinged to the connecting block and hinged to the first hinged part; a limiting assembly, which is arranged on the connecting block and cooperates with the limiting groove.

[0004] The seat is arranged on the front support part for infants to sit on. The lower end surface of the seat is also hinged with a first hinge rod and a second hinge rod, and the ends of the first hinge rod and the second hinge rod away from the seat are respectively hinged with the front support part, and the first hinge rod and the second hinge rod are distributed along the front and rear direction of the seat, and the seat is hinged with the front support part through the first hinge rod and the second hinge rod to flip. When the stroller is folded, the seat can be flipped and folded through the first hinge rod and the second hinge rod.

[0005] In the above-mentioned folding stroller, the backrest and the front baffle are arranged opposite to each other, and a side guardrail is connected between the front baffle and the backrest. When the side guardrail is not needed, cumbersome steps are required to disassemble the side guardrail. The disassembly and assembly of the side guardrail is relatively troublesome and needs to be improved. Summary of the invention

[0006] In order to improve the problem that the side guardrail is troublesome to disassemble and use, the present technical solution provides a seat structure and a cart.

[0007] The purpose of this technical solution is achieved in this way:

[0008] A seat structure, comprising a seat body, a backrest and a front baffle, wherein the seat body is provided with a side guardrail, wherein two side guardrails are provided, and the two side guardrails are located on both sides of the seat body in a one-to-one correspondence, and the side guardrails are located between the backrest and the front baffle;

[0009] The front baffle has a front handrail, the side guardrail is provided with an open slot, the open slot is located at one end of the side guardrail close to the front handrail, the front handrail is provided with an elastic locking piece 1 for the front handrail to be inserted into the open slot to limit the side guardrail from being separated, and one end of the side guardrail is separated from the front baffle by pressing the elastic locking piece 1;

[0010] The rear backrest is provided with a mounting rod, and the side guardrail is provided with a mounting groove, wherein the mounting groove is located at one end of the side guardrail close to the mounting rod, and the side guardrail is provided with an elastic locking piece 2 for inserting the mounting rod into the mounting groove to limit the detachment of the side guardrail, and the other end of the side guardrail can be detached from the rear backrest by pressing the elastic locking piece 2.

[0011] Through the above technical solution, when the seat structure is in normal use, a front baffle and a rear backrest are installed on the seat body, the rear backrest and the front baffle are arranged relative to each other for front and rear protection, two side guardrails are installed on both sides between the front baffle and the rear baffle for side protection, the elastic locking piece 1 makes the side guardrail and the front baffle relatively fixed, by pressing the elastic locking piece 1 of the front armrest and pushing the elastic locking piece 1 upward, the front armrest can be detached from the opening groove to disassemble the side guardrail at one end, thereby making the disassembly and assembly of the side guardrail more convenient;

[0012] The side guardrail is also equipped with an elastic locking piece 2. By pressing the elastic locking piece 2 of the side guardrail and simultaneously pushing the elastic locking piece 2 upward, the elastic locking piece 2 is moved away from the mounting rod. The mounting rod can be detached from the mounting groove to disassemble the other end of the side guardrail. Both ends of the side guardrail can be disassembled separately, thereby enhancing the overall folding and storage capabilities, and further making the disassembly and assembly of the side guardrail more convenient.

[0013] Preferably, the side guardrails include connecting rod 1 and connecting rod 2, connecting rod 1 is hinged to connecting rod 2, connecting rod 1 flips along the hinge axis in a direction away from the front armrest, connecting rod 1 is detachably connected to the front baffle, and connecting rod 2 is detachably connected to the rear backrest.

[0014] Through the above technical solution, the side guardrail is designed with two ends, and the connecting rod one and the connecting rod two are hinged to each other. The side guardrail can be folded for storage, thereby reducing the storage space and improving the portability of use. When the connecting rod one is split separately, the connecting rod one is bent in the direction away from the front armrest so that the front armrest is disengaged from the opening groove, thereby preventing the connecting rod one from being stuck when the connecting rod two rotates along the slot. At the same time, when installing the side guardrail, there is no need to align the connecting rod one and the connecting rod two at the same time, thereby reducing the difficulty of installation and optimizing the installation method.

[0015] Preferably, the elastic locking piece is slidably connected to the front baffle, the elastic locking piece includes a pressing section and a resting section, the front armrest is provided with a connecting hole, the connecting rod is provided with an embedding hole, when the front armrest is embedded in the opening groove, the embedding hole is communicated with the connecting hole for allowing the pressing section to pass through the connecting hole and then embed into the embedding hole, the elastic locking piece is provided with a reset spring, the elastic force of the reset spring makes the resting section press against the inner wall of the connecting hole.

[0016] Through the above technical scheme, the elastic locking piece 1 is located in the front armrest and slides toward the through-hole of the connecting hole, the return spring 1 is arranged on the elastic locking piece 1, one end of the return spring 1 is pressed against the abutting section of the elastic locking piece 1, the cross-sectional diameter of the abutting section is larger than the channel cross-section of the connecting hole of the front armrest, so that the abutting section is pressed against the inner wall of the connecting hole, and the other end of the return spring 1 is pressed against the inner wall of the front armrest on the opposite side of the connecting hole. The return spring 1 provides elastic force for the elastic locking piece 1, so that the elastic locking piece 1 has a sliding tendency. Based on the mutual connection between the connecting hole and the embedding hole 1, the diameter of the pressing section is adapted to the channel cross-section of the connecting hole and the embedding hole 1. At this time, the pressing section passes through the connecting hole and embeds into the embedding hole 1, thereby limiting the front armrest from detaching from the opening groove and improving the stability of the installation.

[0017] Preferably, a groove 1 is formed at one end of the elastic locking member 1 close to the reset spring 1, the front baffle is provided with a fixing protrusion, the fixing protrusion is provided with a groove 2, one end of the reset spring 1 is pressed against the bottom of the groove 1, and the other end of the reset spring 1 is pressed against the bottom of the groove 2.

[0018] Through the above technical solution, the openings of groove one and groove two are arranged in opposite directions, so that the two ends of the reset spring one can be respectively embedded in groove one and groove two, and groove one and groove two cooperate with each other to limit the movement path of the reset spring two during compression or release, thereby reducing the movement of the reset spring two and improving stability and guidance.

[0019] Preferably, the second elastic locking piece is slidingly connected to the second connecting rod, the second elastic locking piece includes a sliding section and a positioning section, the second connecting rod is provided with a second embedding hole, when the mounting rod is embedded in the mounting groove, the sliding section is embedded in the second embedding hole, the mounting rod is provided with a card slot, and the card slot is arranged in an annular groove, the second elastic locking piece is provided with a second reset spring, the elastic force of the second reset spring makes the positioning section press against the bottom of the card slot.

[0020] Through the above technical scheme, the elastic locking piece 2 is located in the connecting rod 2 and slides toward the through-point of the embedding hole 2. The return spring 2 is arranged on the elastic locking piece 2. One end of the return spring 2 is pressed against the sliding section of the elastic locking piece 1, and the other end of the return spring 2 is pressed against the inner wall of the connecting rod 2 on the side opposite to the embedding hole 2. The return spring 2 provides elastic force for the elastic locking piece 2 and makes the elastic locking piece 2 have a sliding tendency. The cross-sectional diameter of the sliding section is adapted to the channel cross-section of the embedding hole 2 of the connecting rod 2. At this time, the positioning section is embedded in the slot of the mounting rod. When the connecting rod 1 and the front armrest are disassembled, based on the slot being an annular groove, the positioning section slides along the through-direction of the annular groove, so that the connecting rod 2 rotates in the opposite direction of the sliding. The side guardrail can realize the adjustment of the circumferential position, optimize the folding structure, improve the applicability, and further improve the stability of the installation.

[0021] Preferably, the front baffle is arranged opposite to the rear backrest, the front baffle is hinged to the seat body, the rear backrest is hinged to the seat body, the hinge axis of the front baffle and the seat body is parallel to the hinge axis of the rear backrest and the seat body, the front baffle is slidably connected with a plug-in block, the end surface of the seat body close to the front baffle is provided with a slot, and the plug-in block is also provided with a reset spring three, when in use, the elastic force of the reset spring three makes the plug-in block press against the slot, and the slot is for the plug-in block to be embedded in to form a flip limit.

[0022] Through the above technical scheme, the front baffle is folded relative to the seat body after being rotated toward the rear backrest, and at the same time, the rear backrest is located above the front baffle after being rotated toward the seat body. The front baffle, the rear backrest and the seat body are folded relative to each other and stored to compress excess space, which is convenient for storage and carrying. The plug-in block is installed in the front baffle, and the slot of the seat body is adapted to the plug-in block of the front baffle. The elastic force of the reset spring three makes the plug-in block tend to slide downward, and the reset spring two pushes the plug-in block to be embedded in the slot to limit the flipping of the front baffle, thereby improving the convenience and stability of the installation of the front baffle.

[0023] Preferably, a guide groove is provided on the side of the front baffle facing away from the rear backrest, and a manual part is fixed to the plug-in block. The manual part passes through the guide groove and slides along the guide groove. When the manual part is moved to overcome the elastic force of the reset spring three, the manual part drives the plug-in block to slide out of the slot, and the front baffle rotates along the hinge axis to achieve folding.

[0024] Through the above technical solution, the guide groove limits the adjustable range of the manual part, and the elastic force of the reset spring three pushes the plug-in block so that the manual part synchronously rests against the lower end of the guide groove. The manual part is pushed upward to overcome the elastic force of the reset spring three, driving the plug-in block to slide synchronously and compress the reset spring three. At this time, the plug-in block is disengaged from the slot so that the front baffle can be flipped toward the rear backrest, thereby realizing the folding and storage of the front baffle, making the storage of the front baffle more convenient.

[0025] A cart comprises a cart body and a push rod assembly, and also comprises any one of the above-mentioned seat structures, wherein the push rod assembly is hinged to the cart body.

[0026] Through the above technical solution, the seat body is installed on the vehicle body, and the vehicle body provides support for the seat body and elevates the seat body to improve safety and stability. The push rod assembly is installed on the vehicle body, and the movement direction of the vehicle body is controlled by the push rod assembly to optimize the operating feel and reduce fatigue in pushing the cart.

[0027] Compared with the prior art, the technical solution has the following outstanding and beneficial technical effects:

[0028] 1. This technical solution installs an elastic locking piece 1 on the front handrail, and the front handrail is embedded in the opening groove to limit the connection rod 1 from being separated from the front baffle. By pressing the elastic locking piece 1, the elastic force of the return spring 1 is overcome to achieve the connection rod 1 from being separated from the front baffle, thereby improving the convenience of disassembly and assembly of the side guardrail;

[0029] 2. This technical solution installs an elastic locking piece 2 on the connecting rod 2, and the mounting rod is embedded in the mounting groove to limit the connection rod 2 from being separated from the backrest. By pressing the elastic locking piece 2, the elastic force of the return spring 2 is overcome to achieve the separation of the connection rod 2 from the backrest, thereby further improving the convenience of disassembly and assembly of the side guardrail;

[0030] 3. This technical solution installs a plug-in block on the front baffle, which is embedded in a slot to form a flip limit for the front baffle. The manual part is pushed upward to push the plug-in block to slide, overcoming the elastic force of the reset spring three, and the plug-in block is disengaged from the slot, so that the front baffle can be flipped toward the rear backrest, thereby improving operational stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the seat structure of the embodiment;

[0032] Figure 2 For example, the seat structure Figure 1 Another schematic diagram of the operating structure;

[0033] Figure 3 A partial exploded schematic diagram of a seat structure of an embodiment;

[0034] Figure 4 It is a partial exploded schematic diagram of the front baffle in the seat structure of the embodiment;

[0035] Figure 5 For example, the seat structure Figure 1 Schematic diagram from another perspective;

[0036] Figure 6 It is a schematic diagram of the specific structure of the front armrest in the seat structure of the embodiment;

[0037] Figure 7 is a schematic diagram of the specific structure of the elastic locking member 2 in the seat structure of the embodiment;

[0038] Figure 8 For example, the seat structure Figure 1 Schematic diagram from another perspective.

[0039] : 1. seat body; 2. rear backrest; 3. front baffle; 4. side guardrail; 41. connecting rod one; 42. connecting rod two; 5. front armrest; 6. opening groove; 7. elastic locking member one; 71. pressing section; 72. abutting section; 8. mounting rod; 9. mounting groove; 10. elastic locking member two; 101. sliding section; 102. positioning section; 11. connecting hole; 12. embedding hole one; 13. reset spring one; 14. groove one; 15. fixing protrusion; 16. groove two; 17. embedding hole two; 18. slot; 19. reset spring two; 20. plug-in block; 21. slot; 22. reset spring three; 23. guide groove; 24. manual part; 25. vehicle body; 26. push rod assembly. DETAILED DESCRIPTION

[0040] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0041] Example:

[0042] See also Figure 1 A seat structure comprises a seat body 1, a rear backrest 2 and a front baffle 3, the front baffle 3 and the rear backrest 2 are arranged opposite to each other, the front baffle 3 is vertically on the seat body 1, the front baffle 3 is hinged to the seat body 1, and the hinge is a hinge axis 1, the rear backrest 2 is vertically on the seat body 1, the rear backrest 2 is hinged to the seat body 1, and the hinge is a hinge axis 2, the hinge axis of the rear backrest 2 and the seat body 1 is parallel to the hinge axis of the front baffle 3 and the seat body 1, the front baffle 3 is located in front relative to the rear backrest 2, and this example shows that the hinge axis 1 is relatively located above the seat body 1, so that the front baffle 3 can be flipped along the hinge axis 1 to near the top of the seat body 1 for folding, the hinge axis 2 is relatively located above the seat body 1 and the position of the hinge axis 2 is higher than the hinge axis 1, so that the rear backrest 2 can be flipped along the hinge axis 2 to near the top of the seat body 1 for folding.

[0043] The seat body 1 is also provided with a side guardrail 4, and there are two side guardrails 4. The two side guardrails 4 are respectively located on both sides of the seat body 1, and the two side guardrails 4 are located between the front baffle 3 and the rear backrest 2. Each side guardrail 4 includes two connecting rod parts, and the two connecting rod parts are respectively connecting rod 1 41 and connecting rod 2 42. The connecting rod 1 41 is located on the side of the connecting rod 2 42 close to the front baffle 3. One end of the connecting rod 1 41 is detachably connected to the front baffle 3, and the other end of the connecting rod 1 41 is hinged to the connecting rod 2 42. The hinge is the hinge axis three, and the hinge axis three is perpendicularly arranged relative to the hinge axis one. The end of the connecting rod 2 42 away from the hinge is detachably connected to the rear backrest 2.

[0044] See also Figure 4 and Figure 5 The front baffle plate 3 has a front armrest 5, which is located at the upper end relative to the front baffle plate 3. The front armrest 5 shown in this example makes the front baffle plate 3 T-shaped. The front baffle plate 3 is equipped with a plug-in block 20, which is located inside the front baffle plate 3 and at one end of the front armrest 5 close to the seat body 1. The plug-in block 20 is slidably connected to the front baffle plate 3. The plug-in block 20 is equipped with a manual part 24, which is fixed to the side of the plug-in block 20 away from the rear backrest 2. The front baffle plate 3 is provided with a guide groove 23, which is located at the position of the front baffle plate 3 corresponding to the manual part 24. The guide groove 23 is used for the manual part 24 to move along the length direction of the guide groove 23, and the length direction of the guide groove 23 is perpendicular to the hinge axis of the front baffle plate 3 and the seat body 1.

[0045] The plug-in block 20 is also provided with a return spring three 22. The return spring three 22 shown in this example can be a spring. The return spring three 22 is fixed to the side of the plug-in block 20 close to the front armrest 5. One end of the return spring three 22 is pressed against the inner wall of the front baffle 3 and the other end is pressed against the end face of the plug-in block 20 facing the front armrest 5. The seat body 1 is provided with a slot 21. The slot 21 is opened on the upper end face of the seat body 1. The position of the slot 21 is set corresponding to the position of the front armrest 5. The slot 21 is adapted to the plug-in block 20. The plug-in block 20 slides along the front baffle 3 and is embedded in the slot 21. The elastic force of the return spring three 22 makes the plug-in block 20 press against the slot 21. The slot 21 is provided for the plug-in block 20 to be embedded in to form a flip limit.

[0046] The front armrest 5 is provided with an elastic locking piece 7, and there are two elastic locking pieces 7. The two elastic locking pieces 7 are both located inside the front armrest 5. The two elastic locking pieces 7 are respectively located on both sides of the front armrest 5. The two elastic locking pieces 7 are both slidably connected to the front baffle 3. Each elastic locking piece 7 includes a pressing section 71 and a resting section 72. The pressing section 71 and the resting section 72 are distributed in the vertical direction. The position of the pressing section 71 is located at the lower end relative to the resting section 72. The front armrest 5 is provided with two connecting holes 11. The two connecting holes 11 are arranged one-to-one with the two elastic locking pieces 7. The two connecting holes 11 are provided on the lower end surfaces on both sides of the front armrest 5 and pass through the corresponding end surfaces. The connecting holes 11 are adapted to the pressing sections 71, and the pressing sections 71 are correspondingly embedded in the connecting holes 11.

[0047] Each elastic locking member 7 is provided with a reset spring 13, and the two reset springs 13 correspond to the two elastic locking members 7 one by one. The reset spring 13 shown in this example can specifically adopt a spring. The two elastic locking members 7 are provided with a groove 14, and the two grooves 14 correspond to the two elastic locking members 7 one by one. The groove 14 is provided on the end surface of the corresponding abutment section 72 away from the pressing section 71. The front baffle 3 is also fixed with two fixed protrusions 15, and the positions of the two fixed protrusions 15 and the two grooves 14 correspond one by one. The two fixed protrusions 15 are located at the front baffle Inside the plate 3, two protrusions are arranged in the direction of the groove 14, and each fixed protrusion 15 is provided with a groove 2 16. The two grooves 16 correspond to the two fixed protrusions 15 one by one, and the opening direction of each groove 2 16 is arranged toward the corresponding groove 14. One end of the reset spring 13 abuts against the bottom of the groove 14 and the other end abuts against the bottom of the groove 2 16. The elastic force of the reset spring 13 drives the elastic locking piece 17 to slide toward the connecting hole 11, so that the abutting section 72 abuts against the inner wall of the connecting hole 11, and the pressing section 71 protrudes from the connecting hole 11 to achieve positioning.

[0048] See also Figure 3 and Figure 6 Each connecting rod 41 is provided with an opening groove 6, and the two opening grooves 6 correspond to the two connecting rods 41 one by one, and each opening groove 6 corresponds to one end of the connecting rod 41, and the direction of the through-opening of each opening groove 6 is located on the side of the connecting rod 41 facing the front armrest 5. Each connecting rod 41 is provided with an embedding hole 12, and the two embedding holes 12 correspond to the two connecting rods 41 one by one, and each embedding hole 12 corresponds to the lower end surface of the connecting rod 41. When the front armrest 5 is embedded in the opening groove 6, the two embedding holes 12 are correspondingly connected with the two connecting holes 11, and the embedding hole 12 is adapted to the pressing section 71, and the pressing section 71 passes through the connecting hole 11 and is embedded in the embedding hole 12.

[0049] The rear backrest 2 is provided with a mounting rod 8, and there are two mounting rods 8. The two mounting rods 8 are respectively located on both sides of the rear backrest 2, and are protruded and fixed toward the connecting rod 2 42 relative to the two sides of the rear backrest 2. Each connecting rod 2 42 is provided with a mounting groove 9, and the two mounting grooves 9 correspond one-to-one to the two connecting rods 2 42. The slot opening of each mounting groove 9 is recessed toward the direction of the corresponding mounting rod 8, and the two mounting grooves 9 correspond one-to-one to the two mounting rods 8. The mounting rods 8 are correspondingly embedded in the mounting grooves 9, and each mounting rod 8 is provided with a clamping groove 18, and the two clamping grooves 18 correspond one-to-one to the two mounting rods 8. The clamping grooves 18 shown in this example are all arranged in an annular groove, and the clamping groove 18 is opened on the outer peripheral wall of the corresponding mounting rod 8 and penetrates circumferentially, and the clamping groove 18 is located at the end of the mounting rod 8 away from the rear backrest 2.

[0050] Each connecting rod 42 is provided with an embedding hole 17 , and the two embedding holes 17 correspond to the two connecting rods 42 one by one. Each embedding hole 17 is located at the end of the corresponding connecting rod 42 away from the connecting rod 1 41 , and the embedding hole 17 is located at the lower end surface of the connecting rod 42 and passes through the corresponding end surface.

[0051] See also Figure 3 and Figure 7 The rear backrest 2 is provided with an elastic locking piece 10, and there are two elastic locking pieces 10. The two elastic locking pieces 10 correspond to the two connecting rods 42 one by one. Each elastic locking piece 10 is located in the corresponding mounting groove 9. The two elastic locking pieces 10 are slidably connected to the connecting rod 42. Each elastic locking piece 10 includes a sliding section 101 and a positioning section 102. The sliding section 101 and the positioning section 102 are distributed in the vertical direction. The position of the sliding section 101 is located below the positioning section 102. The positioning section 102 is bent relative to the sliding section 101 and protrudes and extends toward the direction of the mounting rod 8. The two elastic locking pieces 10 correspond to the two embedding holes 17 one by one. The sliding section 101 is adapted to the embedding hole 17. The sliding section 101 passes through the embedding hole 17 accordingly. The positioning section 102 is adapted to the card slot 18, and the positioning section 102 is embedded in the card slot 18 accordingly.

[0052] Each elastic locking member 10 is installed with a return spring 19, and the two return springs 19 correspond to the two elastic locking members 10 one by one. The return spring 19 shown in this example can specifically adopt a spring, one end of the return spring 19 is pressed against the upper end of the elastic locking member 10 and the other end is pressed against the inner wall of the installation groove 9, and the elastic force of the return spring 19 drives the elastic locking member 10 to slide outward along the embedding hole 17, so that the positioning section 102 is pressed against the bottom of the slot 18, and the positioning section 102 can be guided to slide along the through direction of the slot 18, and the sliding section 101 protrudes from the embedding hole 17 to achieve positioning.

[0053] Alternatively, the elastic locking member 1 7 and the elastic locking member 2 10 can be used interchangeably. An annular groove can be provided on the front baffle 3, which is recessed along the outer peripheral wall of the front armrest 5. The elastic locking member 1 7 is installed in the connecting rod 1 41, and the abutting section 72 extends toward the annular groove. The elastic force of the elastic member 1 pushes the abutting section 72 to be embedded in the annular groove. The abutting section 72 is moved out of the annular groove by pressing the elastic locking member 1 7 to achieve the separation of the connecting rod 1 41 from the front baffle 3. Alternatively, a through hole can be provided on the mounting rod 8, and the elastic locking member 2 10 can be installed in the mounting rod 8. The elastic force of the elastic member 2 pushes the positioning section 102 to abut against the inner wall of the through hole. The sliding section 101 is slid into the through hole by pressing the elastic locking member 2 10 to achieve the separation of the connecting rod 2 42 from the rear backrest 2.

[0054] See also Figure 5 When the elastic locking piece 7 is pressed, the elastic locking piece 7 is pushed to overcome the elastic force of the reset spring 13, and the elastic locking piece 7 compresses the reset spring 13 and moves upward. At this time, the elastic locking piece 7 slides from the embedding hole 12 to the connecting hole 11, so that the front armrest 5 can be moved out of the opening groove 6, and the connecting rod 1 41 is separated from the front baffle 3. The connecting rod 1 41 rotates along the hinge axis with the connecting rod 2 42 in the direction away from the front baffle 3, and the positioning section 102 of the elastic locking piece 2 10 can rotate circumferentially along the annular notch of the slot 18, so that the side guardrail 4 can be rotated and folded for storage.

[0055] The specific working process of this program is as follows:

[0056] The technical solution is to install an elastic locking piece 7 on the front baffle 3 and an elastic locking piece 2 10 on the rear backrest 2. When the opening slot 6 is aligned with the front armrest 5 and embedded, the elastic force of the return spring 13 pushes the elastic locking piece 7, and the pressing section 71 passes through the connecting hole 11 and the second embedding hole 17 and then the abutting section 72 abuts against the inner wall of the connecting hole 11 for positioning, thereby realizing the installation of the connecting rod 1 41. By pressing the elastic locking piece 7, the return spring 13 is compressed and the elastic locking piece 7 is pushed upward to overcome its elastic force, so that the pressing section 71 is disengaged from the embedding hole 12, and the front armrest 5 is separated from the opening slot 6, thereby realizing the separation of the connecting rod 1 41 from the front baffle 3. The mounting rod 8 is embedded in the mounting groove 9, and the elastic force of the return spring 219 pushes the elastic locking piece 210, and the pressing section 71 is embedded in the slot 18 to achieve positioning. By pressing the elastic locking piece 210, the return spring 219 is compressed and overcomes its elastic force to push the elastic locking piece 210 upward. The elastic locking piece 210 compresses the return spring 219 to move upward, and the elastic locking piece 210 slides to make the positioning section 102 disengage from the slot 18, and the mounting rod 8 and the mounting groove 9 are separated from each other, so that the connecting rod 242 and the rear backrest 2 are separated, so that the side guardrail 4 can be completely disassembled, the overall folding and storage capacity is enhanced, and the disassembly and assembly of the side guardrail 4 is further made more convenient.

[0057] This embodiment also discloses a cart, which includes a body 25 and a push rod assembly 26. The body 25 is located on the side of the seat 1 away from the side guardrail 4. The body 25 is installed on the lower end surface of the seat 1. The body 25 is detachably connected to the seat 1. The push rod assembly 26 is located on the side of the rear backrest 2 away from the front baffle 3.

[0058] See also Figure 8 The push rod assembly 26 is detachably connected to the rear backrest 2. The detachable connection structure shown in this example can be adopted in which a buckle is fixed on the side of the rear backrest 2 facing the push rod assembly 26. The rear backrest 2 and the push rod assembly 26 are flipped close to each other. The push rod assembly 26 is provided with a clip, and the locking and fixing are achieved by the cooperation of the clip and the clip. The clip and the clip are both existing technologies and will not be described in detail here.

[0059] The specific working process of this program is as follows:

[0060] This technical solution realizes the integrated use of the seat structure and the cart by installing the seat body 1 on the vehicle body 25, which is detachably connected to the seat body 1. The vehicle body 25 drives the seat body 1 to move, thereby improving safety and stability. The push rod assembly 26 is installed on the rear backrest 2, which is detachably connected to the push rod assembly 26. The moving direction of the vehicle body 25 is controlled by the push rod assembly 26, thereby optimizing the operating feel and reducing the fatigue of pushing the cart.

[0061] The above shows and describes the basic principle and main features of the technical solution and the advantages of the technical solution. The technicians in this industry should understand that the technical solution is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, which fall within the scope of the technical solution to be protected. The scope of protection claimed by the technical solution is defined by the attached claims and their equivalents.

Claims

1. A seat structure, comprising a seat body (1), a rear backrest (2) and a front baffle (3), characterized in that: The seat body (1) is provided with a side guardrail (4), two side guardrails (4) are provided, and the two side guardrails (4) are located on both sides of the seat body (1) in a one-to-one correspondence, and the side guardrails (4) are located between the rear backrest (2) and the front baffle (3); The front baffle (3) has a front handrail (5), the side guardrail (4) is provided with an opening slot (6), the opening slot (6) is located at one end of the side guardrail (4) close to the front handrail (5), the front handrail (5) is provided with an elastic locking piece (7) for the front handrail (5) to be inserted into the opening slot (6) to limit the detachment of the side guardrail (4), and one end of the side guardrail (4) is detached from the front baffle (3) by pressing the elastic locking piece (7); The backrest (2) is provided with a mounting rod (8), the side guardrail (4) is provided with a mounting groove (9), the mounting groove (9) is located at one end of the side guardrail (4) close to the mounting rod (8), the side guardrail (4) is provided with an elastic locking piece (10) for inserting the mounting rod (8) into the mounting groove (9) to limit the side guardrail (4) from being disengaged, and the other end of the side guardrail (4) is disengaged from the backrest (2) by pressing the elastic locking piece (10).

2. The seat structure according to claim 1, characterized in that: The side guardrail (4) comprises a connecting rod 1 (41) and a connecting rod 2 (42), wherein the connecting rod 1 (41) is hinged to the connecting rod 2 (42), the connecting rod 1 (41) is flipped along the hinge axis in a direction away from the front armrest (5), the connecting rod 1 (41) is detachably connected to the front baffle (3), and the connecting rod 2 (42) is detachably connected to the rear backrest (2).

3. The seat structure according to claim 2, characterized in that: The elastic locking member (7) is slidably connected to the front baffle (3), and the elastic locking member (7) includes a pressing section (71) and a supporting section (72). The front armrest (5) is provided with a connecting hole (11), and the connecting rod (41) is provided with an embedding hole (12). When the front armrest (5) is embedded in the opening groove (6), the embedding hole (12) is connected to the connecting hole (11) so as to allow the pressing section (71) to pass through the connecting hole (11) and then embed into the embedding hole (12). The elastic locking member (7) is provided with a reset spring (13), and the elastic force of the reset spring (13) causes the supporting section (72) to press against the inner wall of the connecting hole (11).

4. The seat structure according to claim 3, characterized in that: The elastic locking member (7) is provided with a groove (14) at one end close to the return spring (13), the front baffle (3) is provided with a fixing protrusion (15), the fixing protrusion (15) is provided with a groove (16), one end of the return spring (13) is pressed against the bottom of the groove (14), and the other end of the return spring (13) is pressed against the bottom of the groove (16).

5. The seat structure according to claim 2, characterized in that: The second elastic locking member (10) is slidably connected to the second connecting rod (42), and the second elastic locking member (10) includes a sliding section (101) and a positioning section (102). The second connecting rod (42) is provided with a second embedding hole (17). When the mounting rod (8) is embedded in the mounting groove (9), the sliding section (101) is embedded in the second embedding hole (17). The mounting rod (8) is provided with a clamping groove (18), and the clamping groove (18) is arranged in an annular groove. The second elastic locking member (10) is provided with a second reset spring (19). The elastic force of the second reset spring (19) causes the positioning section (102) to press against the bottom of the clamping groove (18).

6. The seat structure according to claim 5, characterized in that: The front baffle (3) is arranged opposite to the rear backrest (2), the front baffle (3) is hinged to the seat body (1), the rear backrest (2) is hinged to the seat body (1), the hinge axis of the front baffle (3) and the seat body (1) is parallel to the hinge axis of the rear backrest (2) and the seat body (1), the front baffle (3) is slidably connected with a plug-in block (20), the end surface of the seat body (1) close to the front baffle (3) is provided with a slot (21), the plug-in block (20) is also provided with a reset spring three (22), when in use, the elastic force of the reset spring three (22) makes the plug-in block (20) press against the slot (21), and the slot (21) is for the plug-in block (20) to be embedded to form a flip limit.

7. The seat structure according to claim 6, characterized in that: A guide groove (23) is provided on the side of the front baffle (3) facing away from the rear backrest (2); a manual part (24) is fixed to the plug-in block (20); the manual part (24) passes through the guide groove (23) and slides along the guide groove (23); when the manual part (24) is moved to overcome the elastic force of the return spring (22) to slide, the manual part (24) drives the plug-in block (20) to slide out of the slot (21), and the front baffle (3) rotates along the hinge axis to achieve folding.

8. A cart, comprising a cart body (25) and a push rod assembly (26), characterized in that: It also comprises the seat structure according to any one of claims 1 to 7, wherein the push rod assembly (26) is hinged to the vehicle body (25).

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