A folding trailer with detachable wheels

Abstract

The utility model discloses a kind of folding trailer with detachable wheel, it relates to trailer field, it includes folding frame, universal front wheel and detachable rear wheel, folding frame is by front frame, rear frame, left folding side frame, right folding side frame, front chassis, rear chassis and crossbar composition, front frame and rear frame are connected with left folding side frame and right folding side frame to form frame structure, left folding side frame, right folding side frame can be relatively folded, one end of front chassis is connected with front frame, the other end of front chassis is connected with rear chassis, one end of rear chassis is connected with rear frame, the bottom center position of left folding side frame and right folding side frame is fixed with crossbar, front chassis and rear chassis are set in the upper of crossbar. It structure design is reasonable, appearance is beautiful, modelling novel and unique, easy to operate, convenient to use, folding is realized by the cooperation of each component, simultaneously wheel can be detached, greatly reduce the storage space, reduce transportation cost.

Description

Technical fields:

[0001] This utility model relates to a folding trailer with detachable wheels, belonging to the field of trailer technology. Background technology:

[0002] A folding trailer is a portable transport tool with a folding structure design. It reduces its size through a foldable frame, making it easy to store and carry.

[0003] Currently, trailers on the market have non-removable wheels, which requires a large space for storage and increases transportation costs due to their bulk. Therefore, a trailer that can be folded for storage and has removable wheels is needed to solve these problems. Utility model content:

[0004] To address the above problems, the technical problem to be solved by this utility model is to provide a folding trailer with detachable wheels.

[0005] This utility model discloses a folding trailer with detachable wheels, which includes a folding frame, swivel front wheels and detachable rear wheels. The folding frame is composed of a front frame, a rear frame, a left folding side frame, a right folding side frame, a front base frame, a rear base frame and a crossbar. The front frame and rear frame are connected to the left folding side frame and the right folding side frame to form a frame structure. The left folding side frame and the right folding side frame can be folded relative to each other. One end of the front base frame is connected to the front frame, the other end of the front base frame is connected to the rear base frame, and one end of the rear base frame is connected to the rear frame. A crossbar is fixed at the bottom center of the left folding side frame and the right folding side frame, and the front base frame and the rear base frame are set above the crossbar.

[0006] There are two locking sleeves on the bottom of the front frame, and locking cover one and locking cover two are located on the top of the locking sleeves. Locking cover one and locking cover two have detachable devices inside. A swivel wheel is connected to the bottom of the locking sleeves, and a detachable rear wheel is connected to the bottom of the rear frame.

[0007] Preferably, the inner wall of the upper side of the first lock cover is provided with a spring positioning wall, and the spring positioning wall is provided with a locking plate movable groove 1. The upper side of the second lock cover is provided with a locking plate movable groove 2 corresponding to the first lock cover. The second locking plate movable groove is provided with a pressing paddle connecting slot. Both the first and second locking plate movable grooves are semi-circular in design. The inner wall of the connecting wall below the first and second lock covers forms a cylindrical hole, and its outer wall is square in design.

[0008] Preferably, the detachable device consists of a spring, a locking ring, and a pressing lever. A spring positioning post is provided on one side of the locking ring, and the spring is sleeved on the spring positioning post and fixed on the spring positioning wall on the inner wall of one side of the lock cover. The locking ring is located in the first and second movable slots of the locking plate, and one side of the locking ring passes through the connecting slot of the pressing lever and extends to the outside.

[0009] Preferably, the cylindrical pin of the omnidirectional wheel is provided with a positioning groove ring above it, which cooperates with the locking ring to lock it. The cylindrical pin is inserted into the locking sleeve and locked by the locking ring. The rear frame is provided with a positioning lock hole. The square rod pin of the detachable rear wheel is provided with a V-shaped spring piece. One end of the V-shaped spring piece is fixed in the square rod pin, and the other end of the V-shaped spring piece is provided with a spring-loaded switch. The spring-loaded switch is located in the connecting hole of the square rod pin. The square rod pin is inserted into the square hole of the rear frame, and the spring-loaded switch is positioned in the positioning lock hole of the rear frame.

[0010] Preferably, the crossbar is a limiting and reinforcing component, which is located between the bottom center of the left and right folding side frames and the front and rear base frames.

[0011] Preferably, the outer walls of the first and second lock covers are square structures and are adapted to the square inner cavities of the two lock sleeves on the front frame.

[0012] Preferably, the cylindrical pin of the omnidirectional wheel is clearance-fitted with the cylindrical hole in the inner wall of the connecting wall below the first and second lock covers.

[0013] Preferably, the V-shaped spring is made of an elastic metal material.

[0014] Preferably, the positioning lock hole on the rear frame and the spring-loaded switch on the square rod wheel pin are interference fit.

[0015] Preferably, the folding frame is provided with a trailer cover, the front end of the folding frame is provided with a trailer bar, the upper end of the trailer bar is connected to a trailer handle, and the lower end of the trailer bar is connected to the front frame.

[0016] The beneficial effects of this utility model are:

[0017] 1. It has a reasonable structural design, beautiful appearance, novel and unique shape, simple operation and convenient use. It can be folded and retracted through the cooperation of various parts. At the same time, the wheels are detachable, which greatly reduces the storage space and reduces transportation costs.

[0018] 2. The swivel front wheel adopts a detachable device, which is simple in structure and easy to operate. The wheel can be removed and installed by pressing the lever.

[0019] 3. The detachable rear wheel adopts a V-shaped spring and a press-lock switch design, which makes it easy to disassemble and assemble, and has a good locking effect;

[0020] 4. The crossbars effectively reinforce the base frame, preventing it from collapsing due to excessive weight, thus improving the trailer's load-bearing capacity and stability.

[0021] 5. The detachable wheel design allows for individual wheel replacement or maintenance, reducing usage costs. The folding structure adapts to different storage environments, easily accommodating both corners of the home and small storage spaces, making it highly versatile. Attached image description:

[0022] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the folded state of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of this utility model after folding;

[0026] Figure 4 This is a partially exploded view of the present invention after folding;

[0027] Figure 5 This is an exploded view of the installation of the detachable rear wheel in this utility model;

[0028] Figure 6 This is a schematic diagram of the installation structure of the omnidirectional forward wheel and lock cover one and lock cover two in this utility model;

[0029] Figure 7 for Figure 6 Exploded view;

[0030] Figure 8 This is a schematic diagram of the installation structure of the detachable device in this utility model;

[0031] Figure 9 This is a schematic diagram of the V-shaped spring sheet in this utility model;

[0032] Figure 10 This is a structural diagram of the installation of the V-shaped spring and the locking cover in this utility model.

[0033] 1-Folding frame; 11-Front frame; 12-Rear frame; 1201-Positioning lock hole; 13-Left folding side frame; 14-Right folding side frame; 15-Front base frame; 16-Rear base frame; 17-Crossbar; 18-Lock sleeve; 19-Lock cover one; 1901-Spring positioning wall; 1902-Lock plate movable groove one; 20-Lock cover two; 2001-Lock plate movable groove two; 2002-Pressing paddle connecting groove hole; 21-Detachable device; 2101-Spring; 2102-Lock ring; 21021-Spring positioning post; 2103-Pressing paddle; 2-Unidirectional front wheel; 201-Cylindrical wheel pin; 2011-Positioning groove ring; 3-Detachable rear wheel; 301-Square rod wheel pin; 302-V-shaped spring; 3021-Spring buckle switch; 4-Trailer cover; 5-Trailer bar; 6-Trailer handle. Detailed implementation method:

[0034] like Figures 1-10 As shown, this specific embodiment adopts the following technical solution: It includes a folding frame 1, a swivel front wheel 2, and a detachable rear wheel 3. The folding frame 1 is composed of a front frame 11, a rear frame 12, a left folding side frame 13, a right folding side frame 14, a front base frame 15, a rear base frame 16, and a crossbar 17. The front frame 11 and the rear frame 12 are interconnected with the left folding side frame 13 and the right folding side frame 14 to form a frame structure. The left folding side frame 13 and the right folding side frame 14 can be folded relative to each other. One end of the front base frame 15 is connected to the front frame 11, and the other end of the front base frame 15 is connected to the rear base frame 16. One end of the rear base frame 16 is connected to the rear frame 11. 2. When the front base frame 15 and rear base frame 16 are opened, the front frame 11 and rear frame 12 are driven to move inward, and the left folding side frame 13 and right folding side frame 14 are driven to move inward to achieve folding and retraction. The folding method of the left folding side frame 13 and right folding side frame 14 is inward folding and retraction. This folding method can minimize the volume of the trailer after folding. A crossbar 17 is fixed at the bottom center of the left folding side frame 13 and right folding side frame 14. The front base frame 15 and rear base frame 16 are set above the crossbar 17. The crossbar 17 limits and reinforces them to prevent the base frame support from failing due to excessive load.

[0035] Two locking sleeves 18 are provided below the front frame 11. Lock cover 19 and lock cover 20 are provided above the locking sleeves 18. A detachable device 21 is provided inside the lock cover 19 and lock cover 20. A swivel wheel 2 is connected below the locking sleeves 18. The swivel wheel 2 is a wheel that can rotate in all directions, which facilitates the movement of the trailer in different directions. A detachable rear wheel 3 is connected below the rear frame 12.

[0036] A spring positioning wall 1901 is provided on the inner wall of the upper side of the lock cover 19. A locking plate movable groove 1902 is provided on the spring positioning wall 1901. A locking plate movable groove 2001 corresponding to the lock cover 19 is provided on the upper side of the lock cover 20. A pressing paddle connecting slot 2002 is provided on the locking plate movable groove 2001. Both the locking plate movable groove 1902 and the locking plate movable groove 2001 are semi-circular structures. The inner wall of the connecting wall below the lock cover 19 and the lock cover 20 forms a cylindrical hole to facilitate the rotation of the cylindrical wheel pin 201 of the omnidirectional wheel 2. Its outer wall is square.

[0037] The detachable device 21 consists of a spring 2101, a locking ring 2102, and a pressing lever 2103. A spring positioning post 21021 is provided on one side of the locking ring 2102. The spring 2101 is sleeved on the spring positioning post 21021 and fixed on the spring positioning wall 1901 on the inner wall of the upper side of the lock cover 19. The locking ring 2102 is located in the first locking plate movable groove 1902 and the second locking plate movable groove 2001. One side of the locking ring 2102 passes through the pressing lever connecting slot 2002 and extends to the outside for easy pressing.

[0038] A positioning groove ring 2011 is provided above the cylindrical wheel pin 201 of the omnidirectional front wheel 2, and it is locked in place with the locking ring 2102. The cylindrical wheel pin 201 is inserted into the locking sleeve 18 and locked by the locking ring 2102. A positioning lock hole 1201 is provided on the rear frame 12. A V-shaped spring piece 302 is provided in the square rod wheel pin 301 of the detachable rear wheel 3. One end of the V-shaped spring piece 302 is fixed in the square rod wheel pin 301, and the other end of the V-shaped spring piece 302 is provided with a positioning groove ring 2011. A spring-loaded switch 3021 is provided. The spring-loaded switch 3021 is located in the connecting hole of the square rod pin 301. It can be pressed to move back and forth and reset through the V-shaped spring piece 302. The square rod pin 301 is inserted into the square hole of the rear frame 12. The spring-loaded switch 3021 is positioned in the positioning lock hole 1201 of the rear frame 12 to achieve locking. When disassembling, press the spring-loaded switch 3021 to make the spring-loaded switch 3021 move backward and retract, and then pull out the square rod pin 301.

[0039] The crossbar 17 is a limiting and reinforcing component, located between the bottom center of the left folding side frame 13 and the right folding side frame 14 and the front base frame 15 and the rear base frame 16.

[0040] The outer walls of lock cover 19 and lock cover 20 are square structures, which are adapted to the square inner cavities of the two lock sleeves 18 on the front frame 11 to achieve a stable installation of the lock covers.

[0041] The cylindrical pin 201 of the omnidirectional wheel 2 is clearance-fitted with the cylindrical hole in the inner wall of the connecting wall below the lock cover 19 and the lock cover 20, ensuring that the pin can rotate smoothly.

[0042] The V-shaped spring 302 is made of elastic metal material and has good elastic reset performance, ensuring reliable locking and reset of the spring switch 3021.

[0043] The positioning lock hole 1201 on the rear frame 12 and the spring-loaded switch 3021 on the square rod wheel pin 301 are interference fit to ensure the connection stability after the rear wheel is installed.

[0044] The folding frame 1 is equipped with a trailer cover 4, and the front end of the folding frame 1 is equipped with a trailer bar 5. The upper end of the trailer bar 5 is connected to a trailer handle 6, and the lower end of the trailer bar 5 is connected to the front frame 11.

[0045] The disassembly and assembly principle of this specific embodiment is as follows: Press the toggle switch on the lock ring to push the lock ring to move, so that the lock ring is aligned with the cylindrical hole on the inner wall of the connecting wall below the lock cover one and the lock cover two. At this time, the positioning groove on the wheel pin enters. Release the toggle switch, and the spring on one side of the toggle switch pushes the lock ring to move, so that the lock ring is locked in the positioning groove. When disassembling, press the toggle switch at the same time. The toggle switch pushes the lock ring to move, so that the lock ring is aligned with the cylindrical hole. At this time, the positioning groove of the wheel pin is not limited by the lock ring, and the wheel pin can be removed.

[0046] This specific implementation boasts a reasonable structural design, aesthetically pleasing appearance, novel and unique shape, simple operation, and convenient use. Folding and retraction are achieved through the cooperation of various components, while the detachable wheels significantly reduce storage space and lower transportation costs. The swivel front wheels feature a detachable device with a simple structure and convenient operation; wheel removal and installation are achieved by pressing a lever. The detachable rear wheels utilize a V-shaped spring and a press-lock switch design, making disassembly and assembly convenient and providing a good locking effect. The crossbar effectively reinforces the base frame, preventing it from collapsing due to excessive weight, thus improving the trailer's load-bearing capacity and stability. The detachable wheel design allows for individual wheel replacement or maintenance, reducing operating costs. The folding structure adapts to various storage environments, easily accommodating even the smallest corners of a home or small storage spaces, demonstrating excellent versatility.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A folding trailer with detachable wheels, characterized in that: It includes a folding frame (1), swivel front wheels (2), and detachable rear wheels (3). The folding frame (1) is composed of a front frame (11), a rear frame (12), a left folding side frame (13), a right folding side frame (14), a front base frame (15), a rear base frame (16), and a crossbar (17). The front frame (11) and the rear frame (12) are connected to the left folding side frame (13) and the right folding side frame (14) to form a frame structure. The left folding side frame... (13) The right folding side frame (14) can be folded relative to each other. One end of the front base frame (15) is connected to the front frame (11), and the other end of the front base frame (15) is connected to the rear base frame (16). One end of the rear base frame (16) is connected to the rear frame (12). A crossbar (17) is fixed at the bottom center of the left folding side frame (13) and the right folding side frame (14). The front base frame (15) and the rear base frame (16) are located above the crossbar (17). Two locking sleeves (18) are provided below the front frame (11). Lock cover one (19) and lock cover two (20) are provided above the locking sleeves (18). A detachable device (21) is provided inside the lock cover one (19) and lock cover two (20). A swivel front wheel (2) is connected below the locking sleeves (18). A detachable rear wheel (3) is connected below the rear frame (12).

2. A folding trailer with detachable wheels according to claim 1, characterized in that: A spring positioning wall (1901) is provided on the inner wall of the upper side of the lock cover one (19), and a lock plate movable groove one (1902) is provided on the spring positioning wall (1901). A lock plate movable groove two (2001) corresponding to the lock cover one (19) is provided on the upper side of the lock cover two (20), and a pressing paddle connecting slot hole (2002) is provided on the lock plate movable groove two (2001). Both the lock plate movable groove one (1902) and the lock plate movable groove two (2001) are semi-circular in design. The inner wall of the connecting wall below the lock cover one (19) and the lock cover two (20) forms a cylindrical hole, and its outer wall is square in design.

3. A folding trailer with detachable wheels according to claim 1, characterized in that: The detachable device (21) consists of a spring (2101), a locking ring (2102), and a pressing lever (2103). A spring positioning post (21021) is provided on one side of the locking ring (21021). The spring (2101) is sleeved on the spring positioning post (21021) and the spring (2101) is fixed on the spring positioning wall (1901) on the inner wall of the upper side of the lock cover (19). The locking ring (2102) is located in the first lock plate movable groove (1902) and the second lock plate movable groove (2001). One side of the locking ring (2102) passes through the pressing lever connecting slot (2002) and extends to the outside.

4. A folding trailer with detachable wheels according to claim 1, characterized in that: The cylindrical wheel pin (201) of the omnidirectional wheel (2) is provided with a positioning groove ring (2011) above it, and is locked in place with a locking ring (2102). The cylindrical wheel pin (201) is inserted into the locking sleeve (18) and is locked by the locking ring (2102). The rear frame (12) is provided with a positioning locking hole (1201). The square rod wheel pin (301) of the detachable rear wheel (3) is provided with a V-shaped spring piece (302). One end of the V-shaped spring (302) is fixed inside the square rod pin (301), and the other end of the V-shaped spring (302) is provided with a spring-loaded switch (3021). The spring-loaded switch (3021) is located in the connecting hole of the square rod pin (301). The square rod pin (301) is inserted into the square hole of the rear frame (12), and the spring-loaded switch (3021) is positioned in the positioning lock hole (1201) of the rear frame (12).

5. A folding trailer with detachable wheels according to claim 1, characterized in that: The crossbar (17) is a limiting and reinforcing component, which is located between the bottom center of the left folding side frame (13) and the right folding side frame (14) and the front base frame (15) and the rear base frame (16).

6. A folding trailer with detachable wheels according to claim 1, characterized in that: The outer walls of the first lock cover (19) and the second lock cover (20) are square structures and are adapted to the square inner cavities of the two lock sleeves (18) on the front frame (11).

7. A folding trailer with detachable wheels according to claim 1, characterized in that: The cylindrical pin (201) of the omnidirectional wheel (2) is clearance-fitted with the cylindrical hole in the inner wall of the connecting wall below the lock cover one (19) and lock cover two (20).

8. A folding trailer with detachable wheels according to claim 4, characterized in that: The V-shaped spring (302) is made of elastic metal material.

9. A folding trailer with detachable wheels according to claim 1, characterized in that: The positioning lock hole (1201) on the rear frame (12) and the spring-loaded switch (3021) on the square rod wheel pin (301) are interference fit.

10. A folding trailer with detachable wheels according to claim 1, characterized in that: The folding frame (1) is provided with a trailer cover (4), and a trailer bar (5) is provided at the front end of the folding frame (1). The upper end of the trailer bar (5) is connected to a trailer handle (6), and the lower end of the trailer bar (5) is connected to the front frame (11).

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