Locking structure, frame and cart

Abstract

The utility model relates to the technical field of carts, and discloses a locking structure, a frame and a cart, the locking structure comprises a first locking assembly and a second locking assembly, the first locking assembly comprises a first locking assembly body and a locking part, the first locking assembly body is fixedly arranged in a first pipe fitting, and the locking part is fixedly arranged in the first pipe fitting; the locking part extends out of the first pipe fitting and extends into the second pipe fitting in a natural state so as to lock the first pipe fitting and the second pipe fitting which are sleeved in a sliding manner; and the pushing assembly is arranged in the second pipe fitting in a sliding mode, and when the pushing assembly makes contact with the locking part and presses the locking part into the first pipe fitting, the first pipe fitting and the second pipe fitting are unlocked. Unlocking can be achieved through simple pushing operation, in other words, a user only needs to push the pushing assembly, the locking part can be rapidly pressed into the first pipe fitting, and therefore the first pipe fitting and the second pipe fitting are unlocked, the second pipe fitting can smoothly slide along the first pipe fitting, and the unlocking effect is good. And the folding process of the baby carriage or similar equipment is more convenient and quicker.

Description

Technical Field

[0001] This utility model relates to the field of trolley technology, specifically to a locking structure, a frame, and a trolley. Background Technology

[0002] Strollers have become increasingly popular in families with infants due to their convenience and comfort. Currently, to better meet people's needs for portability and storage, most strollers are designed to be foldable.

[0003] The two foldable tubes on a stroller are usually secured with a locking mechanism such as a pin. To fold the two tubes, the pin needs to be manually removed before folding. However, this requires the operator to bend over, which is very inconvenient. Utility Model Content

[0004] In view of this, the present invention provides a locking structure, a frame and a stroller to solve the problem of inconvenient unlocking of the two tubes on the stroller.

[0005] In a first aspect, this utility model provides a locking structure, comprising:

[0006] The first locking component includes a first locking component body and a locking part. The first locking component body is fixedly disposed inside the first pipe fitting. The locking part extends out of the first pipe fitting and into the second pipe fitting in its natural state to lock the first pipe fitting and the second pipe fitting that are slidably fitted together.

[0007] The pushing component is slidably disposed inside the second pipe. When the pushing component contacts the locking part and presses the locking part into the first pipe, the first and second pipes are unlocked.

[0008] The beneficial effects of the above locking structure are:

[0009] This invention allows for unlocking via a simple pushing operation. Users simply push the component to quickly press the locking part into the first tube, unlocking both the first and second tubes. This allows the second tube to slide smoothly along the first tube, making the folding and unfolding of strollers or similar devices more convenient and faster. The locking structure eliminates the need to bend over, and since it is fixed to the frame, there is no risk of loss.

[0010] This invention ensures a stable connection between the first and second pipe fittings, which can only be unlocked by pushing the component, preventing accidental unlocking during use and improving the safety of strollers or similar equipment.

[0011] This utility model has a compact design and occupies little space, making it suitable for use in strollers or other folding devices that require space saving. This makes the entire device smaller when folded, making it easier to carry and store.

[0012] In one optional embodiment, a first spring receiving groove is provided on the body of the first locking component;

[0013] The locking part includes a locking pin and a first spring. The first spring is disposed in a first spring receiving groove. One end of the locking pin is connected to the first spring, and the other end of the locking pin extends out of the first pipe and into the interior of the second pipe in its natural state.

[0014] The aforementioned locking structure incorporates a first spring, which allows the locking pin to automatically extend and insert into the second pipe fitting in its natural state, thus achieving automatic locking. When the external force is released, the locking pin is pushed back to the locked position by the elastic force of the first spring, ensuring that both the first and second pipe fittings remain locked at all times.

[0015] In one alternative implementation, the actuating component includes:

[0016] A push block, which is slidably disposed inside the second pipe fitting and near the locking part;

[0017] The third fitting has a portion inserted inside the second fitting, and another portion extending out of the second fitting. When the third fitting moves toward the push block, it can drive the push block to move.

[0018] The aforementioned pushing component moves the push block via the movement of the third tube. Users only need to operate the third tube to unlock, simplifying the operation and making the unlocking process simpler and more intuitive. The mechanical linkage design between the third tube and the push block efficiently transmits external force to the locking pin, ensuring that unlocking is completed with minimal external force, thus improving operational efficiency.

[0019] In one alternative embodiment, the third fitting is locked to the second fitting by a second locking component.

[0020] By locking the third pipe fitting to the second pipe fitting using the second locking component, the stability of the overall structure is significantly improved. This ensures that even if the third pipe fitting is subjected to external impact during use, it will not affect the push block inside the second pipe fitting. The second locking component also enhances the safety of the device, preventing accidental unlocking and ensuring user safety during use.

[0021] In one alternative implementation, the second locking component includes:

[0022] A locking pin assembly is disposed on a third pipe fitting, the locking pin assembly having a telescopic end that can extend movably from a second pipe fitting;

[0023] The fourth pipe fitting is fixedly installed at the end of the third pipe fitting away from the second pipe fitting;

[0024] A retraction button is provided on the fourth and third pipe fittings;

[0025] A connecting line, one end of which is connected to a retractable button, and the other end of which is connected to a locking pin assembly; when the retractable button is pressed, the retractable button pulls the connecting line to move, thereby causing the telescopic end of the locking pin assembly to be retracted into the second pipe fitting.

[0026] The second locking component described above can be easily unlocked by the user simply by pressing the retraction button, simplifying the operation and allowing for convenient and quick extension and retraction of the third fitting. Connecting the retraction button to the locking pin assembly via a connecting cable ensures the reliability of the mechanical linkage, maintaining good working condition even after prolonged use or exposure to external impacts.

[0027] In one optional implementation, the latch assembly includes:

[0028] A locking pin positioning component is connected to a third pipe fitting, and a second spring receiving groove is provided on the locking pin positioning component;

[0029] The second spring is disposed in the second spring receiving groove;

[0030] The locking pin is the telescopic end of the locking pin assembly. The locking pin is slidably disposed in the second spring receiving groove. One end of the locking pin is connected to the second spring, and the other end of the locking pin can extend movably from the second tube.

[0031] The locking pin positioning component and the locking pin are provided with wiring holes suitable for threading connecting wires. The connecting wires are connected to the locking pins and can drive the locking pins to move along the direction of the second spring receiving groove.

[0032] The aforementioned locking pin assembly can be easily retracted by pulling the connecting line with the retracting button, thereby unlocking the device. This mechanical linkage design allows users to complete locking and unlocking with just a simple button operation, which is very convenient and quick.

[0033] In one optional implementation, the pusher includes:

[0034] The push block body has at least one sliding hole. The push block body is connected to the second pipe fitting via a positioning shaft, which passes through the sliding hole. The push block body has a third spring receiving groove inside, and a spring stop and a third spring are provided in the third spring receiving groove. The third spring is connected to the inner wall of the second pipe fitting.

[0035] A contact is disposed on the push block body and is adapted to the locking part of the first locking component.

[0036] The aforementioned push block and positioning shaft provide stable guidance and limit during sliding, reducing operational failures caused by misalignment or jamming. The third spring and spring stop provide a reliable reset mechanism. When the push block is pressed and the external force is removed, the third spring can quickly drive the push block back to its initial position, ensuring accurate reset in every operation.

[0037] By directly touching the locking part of the first locking component with the contact, the user does not need to perform complicated alignment or adjustment, simplifying the operation steps and making the unlocking and locking process more convenient and faster.

[0038] Secondly, this utility model also provides a vehicle frame, comprising:

[0039] Two jacking pipes;

[0040] Two first pipe fittings, each of which is hinged at the top end to a top pipe;

[0041] Two second pipe fittings are slidably sleeved on the first pipe fitting, and the second pipe fittings and the first pipe fitting are locked together by the locking structure described above.

[0042] Two fifth pipe fittings, each of which is hinged at the top end to a top pipe.

[0043] The beneficial effects of the above-mentioned frame are:

[0044] The top ends of the first and fifth tubes are hinged to the top tube, allowing these tubes to be folded when needed. This enables the frame to be folded up when not in use, facilitating storage and transportation and saving space.

[0045] In one optional embodiment, a first upper enclosure pipe and a second upper enclosure pipe are hinged to the top pipe. The first upper enclosure pipe, the second upper enclosure pipe, and the two top pipes together form a top frame structure. The second upper enclosure pipe is hinged to the middle of the second pipe.

[0046] And / or, the bottom ends of the two first pipes are hinged to the first bottom support pipe, and the bottom ends of the two fifth pipes are hinged to the second bottom support pipe. The first bottom support pipe and the second bottom support pipe are hinged together and together form a bottom frame structure.

[0047] In one alternative embodiment, a storage basket is hinged to the first upper tube fitting;

[0048] And / or, a mop is hinged to the second upper tube fitting;

[0049] And / or, the middle part of the second upper tube fitting is hinged to the middle part of the fifth tube fitting via a first connecting rod;

[0050] And / or, the second pipe fitting and the first bottom support pipe fitting are hinged together by a second connecting rod.

[0051] In one optional embodiment, the second pipe fitting includes a sliding sleeve and a second pipe fitting body, the sliding sleeve being slidably fitted onto the first pipe fitting, and the second pipe fitting body being hinged to the sliding sleeve.

[0052] A limit stop is provided on the outer wall of the first pipe fitting, and the limit stop is used to limit the sliding range of the sleeve along the body of the second pipe fitting.

[0053] Thirdly, this utility model also provides a trolley, comprising:

[0054] The aforementioned vehicle frame;

[0055] Seat, wherein the seat is disposed between two top tubes;

[0056] Four drive wheels, two of which are respectively located at the bottom of the two first pipe fittings, and the other two of which are respectively located at the bottom of the two fifth pipe fittings;

[0057] A canopy bracket, which is hinged to the seat.

[0058] The beneficial effects of the above-mentioned cart are:

[0059] When folded, the first and fifth tubes create support points between their respective drive wheels and the ground, allowing the trolley to stand upright after folding. Because the trolley can stand upright after folding, users can place it anywhere without requiring additional support for storage and management. Attached Figure Description

[0060] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0061] Figure 1 A schematic diagram of a locking structure provided by this utility model;

[0062] Figure 2 A cross-sectional view of the locking pin in the locking structure provided by this utility model when it is in the locked state;

[0063] Figure 3 A cross-sectional view of the locking pin in the locking structure provided by this utility model when it is in the unlocked state;

[0064] Figure 4 A partial cross-sectional view of the second locking component in a locking structure provided by this utility model;

[0065] Figure 5 An exploded view of the pushing component in a locking structure provided by this utility model;

[0066] Figure 6 A schematic diagram of the push block in a locking structure provided by this utility model;

[0067] Figure 7 A cross-sectional view of the locking pin and connecting line in a locking structure provided by this utility model;

[0068] Figure 8 A schematic diagram of the structure of the trolley when it is unfolded, provided by this utility model;

[0069] Figure 9 This is a schematic diagram of the structure of a folding cart provided by this utility model.

[0070] Explanation of reference numerals in the attached figures:

[0071] 100. First locking component; 101. First locking component body; 102. Locking pin; 103. First spring;

[0072] 200. Second locking component; 201. Retracting button; 202. Connecting wire; 203. Locking pin; 204. Locking pin positioning component; 205. Second spring;

[0073] 300. Pushing component; 301. Push block; 3011. Sliding hole; 3012. Contact; 3013. Spring receiving groove; 3014. Spring stop; 3015. Positioning shaft; 3016. Third spring.

[0074] 400. Frame; 401. First tube fitting; 402. Second tube fitting; 4021. Sliding sleeve; 4022. Second tube fitting body; 404. Third tube fitting; 405. Fourth tube fitting; 406. First upper tube fitting; 407. Second upper tube fitting; 408. First bottom support tube fitting; 409. Top tube; 4010. Storage basket; 4011. Mop; 4012. Limiting block; 4013. Fifth tube fitting; 4014. Canopy bracket; 4015. Second bottom support tube fitting; 4016. First connecting rod; 4017. Second connecting rod.

[0075] 500. Drive wheel;

[0076] 600. Seats. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0078] Strollers have become increasingly popular in families with infants due to their convenience and comfort. Currently, to better meet people's needs for portability and storage, most strollers are designed to be foldable.

[0079] The two foldable tubes on a stroller are usually secured with a locking mechanism such as a pin. To fold the two tubes, the pin needs to be manually removed. However, this requires bending over, which is inconvenient, and the pin is easily lost after being removed.

[0080] Based on this, the present invention provides a locking structure that uses a pushing component to push the first locking component to lock and unlock, replacing the traditional pin locking, thereby making the unlocking and locking between the two pipes more convenient.

[0081] The specific embodiments of this utility model are described in detail below with reference to the locking structure of the first aspect of this utility model, the frame of the second aspect of this utility model, and the trolley of the third aspect of this utility model.

[0082] According to an embodiment of the present invention, in a first aspect, a locking structure is provided, combined with... Figures 1 to 7 As shown, it includes a first locking component 100 and a pushing component 300.

[0083] The first locking assembly 100 includes a first locking assembly body and a locking part, wherein the first locking assembly body is fixedly disposed inside the first pipe fitting 401. Figure 2 As shown, the locking part extends from the first tube 401 and into the interior of the second tube 402 in its natural state to lock the first tube 401 and the second tube 402 that are slidably fitted together.

[0084] The sliding component 300 is slidably disposed inside the second fitting 402. (Combined) Figure 3 As shown, when the pushing component 300 comes into contact with the locking part and presses the locking part into the first tube 401, the first tube 401 and the second tube 402 are unlocked.

[0085] The aforementioned locking structure, applied during the safe folding and unfolding of strollers or similar devices, unlocks with a simple push operation. The user simply pushes the push component 300 to quickly press the locking part into the first tube 401, thereby unlocking the first tube 401 and the second tube 402. This allows the second tube 402 to slide smoothly along the first tube 401, making the folding and unfolding process of strollers or similar devices more convenient and faster. This locking structure eliminates the need to bend over, and since it is fixed to the frame, there is no risk of loss.

[0086] The aforementioned locking structure ensures a stable connection between the first tube 401 and the second tube 402, which can only be unlocked by pushing the component 300. This prevents accidental unlocking during use and improves the safety of strollers or similar devices.

[0087] The aforementioned locking structure is compact and occupies little space, making it suitable for use in strollers or other folding devices where space needs to be saved. This results in a smaller overall size when the device is folded, making it easier to carry and store.

[0088] It should be noted that the above locking structure is not only applicable to strollers, but can also be applied to other similar folding devices, such as folding chairs and folding tables, and has wide applicability.

[0089] In one embodiment, a first spring receiving groove is provided on the first locking component body 101. The locking part includes a locking pin 102 and a first spring 103. The first spring 103 is disposed in the first spring receiving groove. One end of the locking pin 102 is connected to the first spring 103, and the other end of the locking pin 102 extends out of the first tube 401 and into the interior of the second tube 402 in its natural state.

[0090] In this embodiment, the first spring 103 allows the locking pin 102 to automatically extend and insert into the second pipe 402 in its natural state, thereby achieving automatic locking. When the external force is released, the locking pin 102 is pushed back to the locked position under the elastic force of the first spring 103, ensuring that the first pipe 401 and the second pipe 402 always remain in the locked state.

[0091] In one embodiment, the pushing component 300 includes a push block 301 and a third tube 404. The push block 301 is slidably disposed within the second tube 402 and near the locking portion. A portion of the third tube 404 is inserted into the second tube 402, and another portion of the third tube 404 extends out of the second tube 402. When the third tube 404 moves toward the push block 301, the third tube 404 can drive the push block 301 to move.

[0092] In this embodiment, the push block 301 is driven by the movement of the third tube 404. The user only needs to operate the third tube 404 to unlock the stroller, simplifying the operation and making the unlocking process simpler and more intuitive. When the third tube 404 is a push handle on a stroller, the user can directly operate the push handle to unlock the stroller frame, making the operation even more convenient. The mechanical linkage design between the third tube 404 and the push block 301 can efficiently transmit external force to the locking pin 102, ensuring that the unlocking action can be completed with a small external force, thus improving the efficiency of operation.

[0093] The pusher block 301 is slidably disposed inside the second tube 402, and the third tube 404 is partially inserted inside the second tube 402. This design makes the entire push assembly 300 occupy less space and has a more compact structure, which helps to reduce the overall size of the equipment. Furthermore, when the pusher block 301 pushes the locking pin 102, it does so inside the second tube 402, avoiding the possibility of direct contact or misoperation by the user and improving the safety of the equipment.

[0094] In one embodiment, the third pipe fitting 404 and the second pipe fitting 402 are locked together by a second locking component 200. In this embodiment, locking the third pipe fitting 404 and the second pipe fitting 402 together by the second locking component 200 significantly improves the stability of the overall structure, ensuring that even if the third pipe fitting 404 is subjected to external impact during use, it will not impact the push block 301 inside the second pipe fitting 402. The second locking component 200 increases the safety of the device, preventing accidental unlocking and ensuring user safety during use.

[0095] In one embodiment, combined Figure 5 and Figure 7As shown, the second locking component 200 includes a latch assembly, a fourth tube 405, a retractable button 201, and a connecting line 202. The latch assembly is disposed on the third tube 404, and has a telescopic end that can extend movably from the second tube 402. The latch assembly locks the third tube 404 to the second tube 402, ensuring that it will not be accidentally unlocked during normal use. The fourth tube 405 is fixedly disposed at the end of the third tube 404 away from the second tube 402. The retractable button 201 is disposed on both the fourth tube 405 and the third tube 404. One end of the connecting line 202 is connected to the retractable button 201, and the other end of the connecting line 202 is connected to the latch assembly. When the retractable button 201 is pressed, the retractable button 201 pulls the connecting line 202 to move, thereby causing the telescopic end of the latch assembly to retract into the second tube 402.

[0096] In this embodiment, the user can easily unlock the device by simply pressing the retraction button 201, simplifying the operation and allowing the user to conveniently and quickly extend and retract the third tube 404. Connecting the retraction button 201 to the locking pin assembly via the connecting cable 202 ensures the reliability of the mechanical linkage, maintaining good working condition even after prolonged use or exposure to external impacts.

[0097] In one embodiment, combined Figure 4 As shown, the locking assembly includes a locking pin positioning component 204, a second spring 205, and a locking pin 203. The locking pin positioning component 204 is connected to the third pipe fitting 404, and a second spring receiving groove is provided on the locking pin positioning component 204. The second spring 205 is disposed in the second spring receiving groove. The locking pin 203 is the telescopic end of the locking assembly. The locking pin 203 is slidably disposed in the second spring receiving groove. One end of the locking pin 203 is connected to the second spring 205, and the other end of the locking pin 203 can extend movably from the second pipe fitting 402. The locking pin positioning component 204 and the locking pin 203 are provided with wiring holes suitable for threading a connecting wire 202. The connecting wire 202 is connected to the locking pin 203 and can drive the locking pin 203 to move along the direction of the second spring receiving groove. The connecting wire 202 can be made of steel wire.

[0098] In this embodiment, by pulling the connecting line 202 with the retracting button 201, the locking pin 203 can be easily retracted, thereby unlocking. This mechanical linkage design allows users to complete locking and unlocking with just a simple button operation, which is very convenient and quick.

[0099] In one embodiment, combined Figure 2 and Figure 6As shown, the push block 301 includes a push block body and a contact 3012. The push block body has at least one sliding hole 3011. The push block body is connected to the second pipe fitting 402 via a positioning shaft 3015. The positioning shaft 3015 passes through the sliding hole 3011, providing stable guidance and limiting for the push block 301 during sliding, reducing operational failures caused by offset or jamming. The push block body has a third spring receiving groove 3013 inside, containing a spring stop 3014 and a third spring 3016. The third spring 3016 is connected to the inner wall of the second pipe fitting 402. The third spring 3016 and spring stop 3014 provide a reliable reset mechanism. When the push block 301 is pressed and the external force is removed, the third spring 3016 can quickly drive the push block 301 back to its initial position, ensuring accurate reset in each operation.

[0100] The contact 3012 is disposed on the push block body and is adapted to the locking part of the first locking component 100. The precise cooperation between the contact 3012 and the locking part of the first locking component 100 ensures that the locking or unlocking mechanism is accurately triggered with each operation, reducing the possibility of misoperation and improving the reliability of the device. By directly touching the locking part of the first locking component 100 with the contact 3012, the user does not need to perform complicated alignment or adjustment, simplifying the operation steps and making the unlocking and locking process more convenient and faster.

[0101] According to an embodiment of the present invention, in a second aspect, a vehicle frame is provided, combined with... Figures 1 to 9 As shown, the system includes a jacking pipe 409, a first pipe fitting 401, a second pipe fitting 402, a locking structure, and a fifth pipe fitting 4013. Two jacking pipes 409 are provided, arranged in pairs. Two first pipe fittings 401 are provided, with the top end of each first pipe fitting 401 hinged to one jacking pipe 409. Two second pipe fittings 402 are provided, slidably sleeved on the first pipe fittings 401, and locked together by the locking structure. Two fifth pipe fittings 4013 are provided, with the top end of each fifth pipe fitting 4013 hinged to one jacking pipe 409.

[0102] In the aforementioned frame, the top ends of the first tube 401 and the fifth tube 4013 are respectively hinged to the top tube 409, allowing these tubes to be folded when needed, so that the frame can be folded up when not in use, making it convenient for storage and transportation and saving space.

[0103] The second pipe fitting 402 is slidably sleeved on the first pipe fitting 401 and locked by a locking structure, so that the second pipe fitting 402 can slide on the first pipe fitting 401 and be fixed in the desired position, thereby realizing the height adjustment requirement of the first pipe fitting 401 to adapt to different usage scenarios or user height requirements.

[0104] In one embodiment, a first upper surrounding pipe 406 and a second upper surrounding pipe 407 are hinged to the top pipe 409. The first upper surrounding pipe 406, the second upper surrounding pipe 407, and the two top pipes 409 together form a top frame structure. The second upper surrounding pipe 407 is hinged to the middle of the second pipe 402. The bottom ends of the two first pipes 401 are hinged to the first bottom support pipe 408, and the bottom ends of the two fifth pipes 4013 are hinged to the second bottom support pipe 4015. The first bottom support pipe 408 and the second bottom support pipe 4015 are hinged together and together form a bottom frame structure.

[0105] In this embodiment, the formed top and bottom frame structures significantly enhance the overall rigidity and stability of the frame, better distributing and bearing external forces, reducing the risk of deformation, and minimizing the risk of accidental tipping over. The first upper casing 406 and the second upper casing 407 are hinged to the top tube 409, and the second upper casing 407 is also hinged to the middle of the second casing 402. This multi-point hinge design makes the frame easier to fold. Users can easily fold the frame for convenient storage and transportation.

[0106] In one embodiment, a storage basket 4010 is hinged to the first upper tube 406 for easy storage of items.

[0107] In one embodiment, a mop 4011 is hinged to the second upper tube 407. When the frame needs to be towed, the mop 4011 can be rotated to tow the entire frame. This allows the frame to be pushed not only by the second tube 402 and the third tube 404, but also by the mop 4011.

[0108] In one embodiment, the middle portion of the second upper tube 407 is hinged to the middle portion of the fifth tube 4013 via a first connecting rod 4016. The second tube 402 is hinged to the first bottom support tube 408 via a second connecting rod 4017.

[0109] In one embodiment, the second pipe fitting 402 includes a sliding sleeve 4021 and a second pipe fitting body 4022. The sliding sleeve 4021 is slidably sleeved on the first pipe fitting 401, and the second pipe fitting body 4022 is hinged to the sliding sleeve 4021, so that the second pipe fitting 402 can be easily folded up when not in use, reducing the space occupied.

[0110] In one embodiment, combined Figure 1As shown, a limit stop 4012 is provided on the outer wall of the first pipe fitting 401. The limit stop 4012 is used to limit the sliding range of the sliding sleeve 4021 along the body 4022 of the second pipe fitting, preventing the sliding sleeve 4021 from sliding beyond the predetermined range on the first pipe fitting 401, thereby avoiding structural instability caused by excessive extension or contraction. Due to the presence of the limit stop 4012, users can adjust the height with more confidence during use without worrying about structural instability or component damage.

[0111] According to an embodiment of the present invention, in a third aspect, a trolley is provided, combined with... Figures 1 to 9 As shown, the vehicle includes a frame 400, a seat 600, drive wheels 500, and a roof support 4014. The seat 600 is positioned between two top tubes 409. Four drive wheels 500 are provided, with two drive wheels 500 respectively positioned at the bottom of two first tubes 401, and the other two drive wheels 500 respectively positioned at the bottom of two fifth tubes 4013. The roof support 4014 is hinged to the seat 600. At least one roof support 4014 is provided. As a preferred embodiment, two roof supports 4014 are provided, with the two roof supports 4014 located above the first upper tube 406 and the second upper tube 407, respectively, allowing a roof to be installed on the two roof supports 4014, achieving full coverage of the seat.

[0112] In the aforementioned trolley, when the first tube 401 and the fifth tube 4013 are folded, the drive wheels 500 below the first tube 401 and the fifth tube 4013 form support points with the ground, allowing the trolley to stand upright after being folded. Because the trolley can stand upright after being folded, users can place it anywhere without requiring additional support for storage and management.

[0113] Among them, the third pipe fitting 404 and the fourth pipe fitting 405 serve as the push handle of the cart, and the two second pipe fittings 402, the two third pipe fittings 404, and the two fourth pipe fittings 405 constitute the push handle assembly of the cart. Combined Figure 1 and Figure 5 As shown, in a preferred embodiment, two third pipes 404 are connected, and two fourth pipes 405 are connected to form the push handle assembly of the trolley. A first pipe 401 serves as the rear wheel pipe of the trolley, and two first pipes 401 and two drive wheels constitute the rear wheel assembly of the trolley. A fifth pipe 4013 serves as the front wheel pipe of the trolley, and two fifth pipes 4013 and two drive wheels constitute the front wheel assembly of the trolley. A first bottom support pipe 408 and a second bottom support pipe 4015 constitute the bottom support assembly of the trolley.

[0114] The folding principle of the above-mentioned cart is as follows.

[0115] When the trolley needs to be folded: Pressing the folding button 201 causes the locking pin to retract into the second tube 402 via the connecting line 202. At this time, the third tube 404 and the fourth tube 405 (which constitute the upper tube of the push handle) can be retracted into the second tube 402 (lower tube of the push handle). The third tube 404 and the fourth tube 405 push the push block 301 forward and push the locking pin 102 back into the locking pin seat. At this time, the sliding sleeve 4021 slides downward along the first tube 401 (rear foot tube). The sliding sleeve 4021 drives the push handle assembly and the bottom support assembly to fold (the push handle assembly folds upward, and the bottom support assembly folds upward). At the same time, the bottom support assembly drives the front wheel assembly to fold. The front wheel assembly drives the second upper tube 407 to fold via the first connecting rod 4016, and the push handle assembly drives the first upper tube 406 to fold, thereby achieving the folding effect of the entire trolley. Figure 9 As shown.

[0116] When the trolley needs to be unfolded: pulling up the upper tube of the push handle causes the sliding sleeve to slide upwards along the first tube 401 until it reaches the locking pin. The locking pin then springs into the locking groove of the rear sliding sleeve and locks it in place. At this time, the sliding sleeve cannot slide downwards, and the limit stop blocks further obstruct the sliding sleeve. Figure 8 As shown.

[0117] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A locking structure, characterized in that, include: The first locking component (100) includes a first locking component body and a locking part. The first locking component body is fixedly disposed inside the first tube (401). The locking part extends out from the first tube (401) and into the second tube (402) in its natural state to lock the first tube (401) and the second tube (402) that are slidably fitted together. The push component (300) is slidably disposed inside the second tube (402). When the push component (300) contacts the locking part and presses the locking part into the first tube (401), the first tube (401) and the second tube (402) are unlocked.

2. The locking structure according to claim 1, characterized in that, The first locking component body (101) is provided with a first spring receiving groove; The locking part includes a locking pin (102) and a first spring (103). The first spring (103) is disposed in a first spring receiving groove. One end of the locking pin (102) is connected to the first spring (103). The other end of the locking pin (102) extends out from the first tube (401) and into the interior of the second tube (402) in its natural state.

3. The locking structure according to claim 1 or 2, characterized in that, The actuation component (300) includes: Push block (301), which is slidably disposed inside the second pipe fitting (402) and close to the locking part; A third pipe fitting (404) is inserted into the second pipe fitting (402) and another part of the third pipe fitting (404) extends out from the second pipe fitting (402). When the third pipe fitting (404) moves toward the push block (301), the third pipe fitting (404) can drive the push block (301) to move.

4. The locking structure according to claim 3, characterized in that, The third pipe fitting (404) and the second pipe fitting (402) are locked together by a second locking component (200).

5. The locking structure according to claim 4, characterized in that, The second locking component (200) includes: A locking pin assembly is disposed on a third pipe fitting (404), the locking pin assembly having a telescopic end that can extend movably from a second pipe fitting (402); The fourth pipe fitting (405) is fixedly disposed at the end of the third pipe fitting (404) away from the second pipe fitting (402); A retractable button (201) is provided on the fourth fitting (405) and the third fitting (404); A connecting line (202) is provided, one end of which is connected to a retractable button (201), and the other end of which is connected to a locking pin assembly. When the retractable button (201) is pressed, the retractable button (201) pulls the connecting line (202) to move, thereby causing the telescopic end of the locking pin assembly to be retracted into the second pipe fitting (402).

6. The locking structure according to claim 5, characterized in that, The locking pin assembly includes: A locking pin positioning component (204) is connected to a third pipe fitting (404), and a second spring receiving groove is provided on the locking pin positioning component (204). The second spring (205) is disposed in the second spring receiving groove; The locking pin (203) is the telescopic end of the locking pin assembly. The locking pin (203) is slidably disposed in the second spring receiving groove. One end of the locking pin (203) is connected to the second spring (205), and the other end of the locking pin (203) can extend out from the second tube (402). The locking pin positioning component (204) and the locking pin (203) are provided with wiring holes suitable for passing through the connecting wire (202). The connecting wire (202) is connected to the locking pin (203) and can drive the locking pin (203) to move along the direction of the second spring receiving groove.

7. The locking structure according to claim 3, characterized in that, The pusher block (301) includes: The push block body has at least one sliding hole (3011) and is connected to the second pipe (402) by a positioning shaft (3015), which passes through the sliding hole (3011). The push block body has a third spring receiving groove (3013) inside, and a spring stop (3014) and a third spring (3016) are provided in the third spring receiving groove (3013). The third spring (3016) is connected to the inner wall of the second pipe (402). A contact (3012) is disposed on the push block body and adapted to the locking part of the first locking assembly (100).

8. A vehicle frame, characterized in that, include: Two jacking pipes (409); Two first pipe fittings (401), the top end of each first pipe fitting (401) is respectively hinged to a top pipe (409); Two second pipe fittings (402) are slidably sleeved on the first pipe fitting (401), and the second pipe fittings (402) and the first pipe fitting (401) are locked together by the locking structure according to any one of claims 1-7; Two fifth pipe fittings (4013), the top end of each of the fifth pipe fittings (4013) being hinged to a top pipe (409).

9. The frame according to claim 8, characterized in that, The top pipe (409) is hinged with a first upper casing (406) and a second upper casing (407). The first upper casing (406), the second upper casing (407) and the two top pipes (409) together form a top frame structure. The second upper casing (407) is hinged to the middle of the second casing (402). And / or, the bottom ends of the two first pipe fittings (401) are hinged to the first bottom support pipe fitting (408), and the bottom ends of the two fifth pipe fittings (4013) are hinged to the second bottom support pipe fitting (4015). The first bottom support pipe fitting (408) and the second bottom support pipe fitting (4015) are hinged together and together form a bottom frame structure.

10. The frame according to claim 9, characterized in that, A storage basket (4010) is hinged to the first upper tube fitting (406); And / or, a mop (4011) is hinged to the second upper tube fitting (407); And / or, the middle part of the second upper tube fitting (407) is hinged to the middle part of the fifth tube fitting (4013) via the first connecting rod (4016); And / or, the second pipe fitting (402) is hinged to the first bottom support pipe fitting (408) via a second connecting rod (4017).

11. The frame according to any one of claims 8-10, characterized in that, The second pipe fitting (402) includes a sliding sleeve (4021) and a second pipe fitting body (4022). The sliding sleeve (4021) is slidably sleeved on the first pipe fitting (401), and the second pipe fitting body (4022) is hinged to the sliding sleeve (4021). A limiting block (4012) is provided on the outer side wall of the first pipe fitting (401), and the limiting block (4012) is used to limit the sliding range of the sliding sleeve (4021) along the body of the second pipe fitting (4022).

12. A trolley, characterized in that, include: The frame (400) according to any one of claims 8-11; A seat (600) is disposed between two top tubes (409); Four drive wheels (500), two of which are respectively located at the bottom of two first pipe fittings (401), and the other two are respectively located at the bottom of two fifth pipe fittings (4013); A canopy bracket (4014) is hinged to the seat (600).

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