Medium to large low-floor three-wheeled pet cart

Abstract

To provide a medium-to-large, low-floor three-wheeled pet cart that is easy and quick to operate, has stronger fixing force, maintains the simplicity of the entire body, reduces logistics costs, and is easy to store at home. [Solution] A medium- to large-sized, low-floor, three-wheeled pet cart has a base 1, and a front wheel frame 2 and two rear wheel frames 3 are provided at the bottom of the base, with the rear wheel frames detachably connected to the base. A handle frame 4 is provided at the top of the base, and a front enclosure 6 is provided on one side of the handle frame and a rear support rod 9 on the other side. The front enclosure is hinged to the handle frame, and both ends of the rear support rod are hinged to the handle frame and the base, respectively. A sunshade frame 7 is provided above the front enclosure, and one end of the sunshade frame close to the handle frame is hinged to the front enclosure and a rotary push switch 5 is provided at the other end. A buckle structure is provided at the other end of the front enclosure, and the rotary push switch engages with the buckle structure.

Description

[Technical Field]

[0001] The present invention relates to the technical field of pet carts, and more particularly to a medium-sized, low-floor, three-wheeled pet cart. [Background technology]

[0002] As people's living standards improve, more and more people in urban areas are keeping pets. However, when taking pets such as dogs out, there are safety risks when walking them on roads or in busy areas while leashed. In addition, pets such as cats are not suitable for walking on leashes and must be carried in cages, which is inconvenient.

[0003] For example, patent application number CN202011250825.0 discloses a multi-functional pet cart. The pet cart includes a body, multiple wheels, and a pet cage. The pet cage is detachably connected to the body and has a foldable structure. A pull rod pipe and a pull rod handle are connected to the rear end of the body via an operable pull rod rotation shaft. The pull rod pipe and the pull rod handle rotate around the operable pull rod rotation shaft and can be stored in the bottom of the body. A light strip is provided in the front of the body, and drawers for storing pet supplies and tissues are provided on the sides of the body. The pull rod can be stored in the bottom of the body by rotating the rotation shaft, and the canopy can be folded to save space.

[0004] To prevent the curtain on the outside of the pet cage from scattering, some pet carts have buckles where the curtain overlaps with the frame to initially position the curtain. With conventional buckle designs, the buckle can easily come undone due to the vibration and shaking of the vehicle when traveling over uneven surfaces, resulting in poor stability. Additionally, some pet carts have larger and wider rear wheels to better handle uneven surfaces. However, this design requires more space when the vehicle is folded, which impacts subsequent packaging and transportation, leaving room for improvement. Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above problems, the present invention provides a medium-sized, large-sized, low-floor, three-wheeled pet cart that overcomes the drawbacks of the prior art. [Means for solving the problem]

[0006] To achieve the above objectives, the present invention adopts the following technical means: a medium-sized, low-floor three-wheeled pet cart, comprising a base, the lower end of which is provided with one front wheel frame and two rear wheel frames, the front wheel frame being rotatably connected to the base, and the rear wheel frames being detachably connected to the base.

[0007] A handle frame is provided on the upper end of the base, and the lower end of the handle frame is hingedly connected to the base. A front enclosure is provided on one side of the handle frame, and the front enclosure is hingedly connected to the handle frame. A rear support rod is provided on the other side of the handle frame, and both ends of the rear support rod are hingedly connected to the handle frame and the base, respectively.

[0008] A sunshade frame is provided above the front enclosure, one end of the sunshade frame close to the handle frame is hinged to one end of the front enclosure close to the handle frame, a rotary push switch is provided at the other end of the sunshade frame, and a buckle structure is provided at the other end of the front enclosure, and the rotary push switch engages with the buckle structure.

[0009] As a further improvement, the buckle structure includes a locking buckle lower seat, which is fixedly connected to the front enclosure, and a hook pin is provided on the side of the locking buckle lower seat away from the front enclosure, which is fixedly connected to the locking buckle lower seat, and an annular groove is opened on the outside of the hook pin.

[0010] As a further improvement, the rotary push switch comprises a locking buckle swivel seat and a locking buckle upper seat, the locking buckle upper seat is fixedly mounted on the outside of the sunshade frame, one end of the locking buckle swivel seat is hingedly connected to the locking buckle upper seat, and the other end of the locking buckle swivel seat is provided with a locking buckle quick release member, which is slidably connected to the inner wall of the locking buckle swivel seat. A rotary seat outer cover is provided on the side of the locking buckle swivel seat close to the locking buckle lower seat, and the rotary seat outer cover engages with the locking buckle swivel seat. The rotary seat outer cover has a through hole, and the locking buckle quick release member has a valve hole. A spring structure is provided inside the locking buckle swivel seat and the rotary seat outer cover to push the locking buckle quick release member outward.

[0011] As a further improvement, the spring structure includes a mounting block, which is fixedly mounted on the side of the locking buckle quick release member near the locking buckle upper seat, and a spring fitted to the outside of the mounting block, with one end of the spring overlapping the locking buckle quick release member and the other end of the spring overlapping the inner wall of the locking buckle rotating seat.

[0012] As a further improvement, a stopper groove is formed in the locking buckle quick release member, and a positioning block is provided inside the locking buckle rotating seat, one end of the positioning block is fixedly connected to the locking buckle rotating seat, and the other end of the positioning block is inserted into the stopper groove and slidably connected to the stopper groove.

[0013] As a further improvement, a plurality of elastic hooks are provided on the side of the rotating seat outer cover close to the locking buckle rotating seat, and the elastic hooks are fixedly connected to the rotating seat outer cover, and a hook-shaped protrusion is provided on the side of the elastic hooks away from the rotating seat outer cover, and the hook-shaped protrusion engages with a hook groove opened on the outside of the locking buckle rotating seat.

[0014] As a further improvement, the rear wheel frame is provided with a connecting shaft, movable wheels are provided on both left and right ends of the connecting shaft, the movable wheels are fixedly connected to the connecting shaft, caster brackets are fitted onto both ends of the connecting shaft, assembly grooves are opened at the upper ends of the caster brackets, the assembly grooves engage with the outer wall of the base, fixing bolts are assembled on the outside of the caster brackets, the fixing bolts are screwed into the assembly grooves and screwed into bolt holes opened on the outside of the base. [Effects of the Invention]

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The rotary push switch and buckle engagement design make operation simple and quick, allowing for one-handed locking and unlocking without the need for complicated procedures. The locking force is stronger than with a traditional single buckle lock. The hinge reversal structure eliminates the need for space when the sunshade frame is stowed. Combined with the detachable rear wheel frame design, the overall vehicle design remains simple, reducing logistics costs and facilitating storage at home. [Brief explanation of the drawings]

[0017] In order to more clearly describe the technical solutions of the embodiments of the present application or the prior art, the following briefly introduces drawings necessary for describing the embodiments or the prior art. Obviously, the drawings in the following description are only some of the embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

[0018] [Figure 1] 1 is a structural diagram of a handle frame according to the present invention; [Figure 2] FIG. 2 is a structural diagram of the base of the present invention. [Figure 3] 3 is a structural diagram of the rotary push switch and buckle structure of the present invention when engaged; FIG. [Figure 4] 2 is an exploded view of the rotary push switch and buckle structure of the present invention; FIG. [Figure 5] 1 is a structural diagram of a locking buckle quick release member according to the present invention;

[0019] Explanation of symbols in the drawings: 1. Base; 2. Front wheel frame; 3. Rear wheel frame; 31. Connecting shaft; 32. Caster bracket; 33. Moving wheel; 34. Assembly groove; 4. Handle frame; 5. Rotary push switch; 6. Front enclosure; 7. Sunshade frame; 8. Buckle structure; 9. Rear support rod; 10. Lock buckle swivel seat; 11. Lock buckle lower seat; 12. Rotary seat outer cover; 13. Lock buckle quick release member; 14. Lock buckle upper seat; 15. Through hole; 16. Elastic hook; 17. Positioning block; 18. Stopper groove; 19. Valve hole; 20. Mounting block; 21. Spring; 22. Latch pin; 23. Annular groove; 24. Hook groove. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to clarify the purpose, technical means and advantages of the embodiments of the present application, the technical means in the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and are not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without requiring creative work are included in the protection scope of the present application.

[0021] As shown in Figures 1, 2, 3, 4 and 5, this embodiment provides a medium- to large-sized, low-floor, three-wheeled pet cart. It has a base 1, and at the bottom of the base 1, one front wheel frame 2 and two rear wheel frames 3 are provided. The front wheel frame 2 is rotatably connected to the base 1, and the rear wheel frames 3 are detachably connected to the base 1.

[0022] The front wheel frame 2 is fixed to the front end of the base 1 and provides steering support. The two rear wheel frames 3 are detachably connected to the rear end of the base 1 to form a three-wheel support structure. When assembled, the rear wheel frames 3 are connected to the base 1, making it easy to move the vehicle body. When transporting or storing, the rear wheel frames 3 can be removed, reducing the overall space occupied, lowering logistics costs, and making it easier to store at home.

[0023] A handle frame 4 is provided on the upper end of the base 1, and the lower end of the handle frame 4 is hinged to the base 1. A front enclosure 6 is provided on one side of the handle frame 4, and the front enclosure 6 is hinged to the handle frame 4. A rear support rod 9 is provided on the other side of the handle frame 4, and both ends of the rear support rod 9 are hinged to the handle frame 4 and the base 1, respectively.

[0024] A sunshade frame 7 is provided above the front enclosure 6, and one end of the sunshade frame 7 close to the handle frame 4 is hingedly connected to one end of the front enclosure 6 close to the handle frame 4. A rotary push switch 5 is provided at the other end of the sunshade frame 7, and a buckle structure 8 is provided at the other end of the front enclosure 6, and the rotary push switch 5 engages with the buckle structure 8.

[0025] The sunshade frame 7 is reversible by being hinged to the front enclosure 6. When sun protection or rain protection is required, the sunshade frame 7 is rotated to a position that covers the top of the base 1, and the position of the sunshade frame 7 is fixed by engaging the rotary push switch 5 with the buckle structure 8. When not in use, the engagement between the rotary push switch 5 and the buckle structure 8 is released, and the sunshade frame 7 is reversed forward for storage, so that it does not affect pet entry or exit or visibility.

[0026] The engagement design of the rotary push switch 5 and the buckle structure 8 makes operation simple and quick, allowing locking and unlocking to be completed with one hand without the need for complicated procedures. The locking force is stronger than that of the traditional single buckle lock. The hinge reversal structure eliminates the need for extra space after the sunshade frame 7 is retracted, maintaining the overall compactness of the vehicle body.

[0027] Buckle structure The buckle structure 8 has a locking buckle lower seat 11, which is fixedly connected to the front enclosure 6, and a hook pin 22 is provided on the side of the locking buckle lower seat 11 away from the front enclosure 6, and the hook pin 22 is fixedly connected to the locking buckle lower seat 11, and an annular groove 23 is opened on the outside of the hook pin 22. The buckle structure 8 is fixed to the front enclosure 6 via the locking buckle lower seat 11 to form a fixed end. When the sunshade frame 7 is rotated to the closed position, the member of the rotary push switch 5 is fitted into the latch pin 22 and positioned by engagement with the annular groove 23, preventing the sunshade frame 7 from being unintentionally turned over during use.

[0028] About the rotary push switch 5 The rotary push switch 5 comprises a lock buckle swivel seat 10 and a lock buckle upper seat 14. The lock buckle upper seat 14 is fixedly mounted on the outside of the sunshade frame 7. One end of the lock buckle swivel seat 10 is hingedly connected to the lock buckle upper seat 14. A lock buckle quick release member 13 is mounted on the other end of the lock buckle swivel seat 10. The lock buckle quick release member 13 is slidably connected to the inner wall of the lock buckle swivel seat 10. A swivel seat outer cover 12 is mounted on the side of the lock buckle swivel seat 10 closer to the lock buckle lower seat 11. The swivel seat outer cover 12 engages with the lock buckle swivel seat 10. A through-hole 15 is opened in the swivel seat outer cover 12. A valve hole 19 is opened in the lock buckle quick release member 13. The valve hole 19 and the through-hole 15 are offset from each other. A spring structure is provided inside the lock buckle swivel seat 10 and the swivel seat outer cover 12 to push the lock buckle quick release member 13 outward.

[0029] The locking buckle upper seat 14 is fixed to the sunshade frame 7. After lowering the sunshade frame 7, the locking buckle swivel seat 10 is rotated around the locking buckle upper seat 14, and the swivel seat outer cover 12 is fitted onto the latch pin 22. At this time, the spring structure causes the locking buckle quick release member 13 to slide outward, and the inside of the locking buckle quick release member 13 engages with the annular groove 23 of the latch pin 22, completing the locking. To release the lock, the locking buckle quick release member 13 is pressed to compress the spring structure and release it from the annular groove 23, allowing the locking buckle swivel seat 10 to rotate and open the sunshade frame 7.

[0030] Specifically, the spring structure includes a mounting block 20, which is fixedly mounted on the side of the locking buckle quick release member 13 near the locking buckle upper seat 14. A spring 21 is fitted to the outside of the mounting block 20, with one end of the spring 21 overlapping the locking buckle quick release member 13 and the other end of the spring 21 overlapping the inner wall of the locking buckle rotating seat 10.

[0031] The mounting block 20 is fixed to the locking buckle quick release member 13 and provides mounting positioning for the spring 21. When the locking buckle quick release member 13 is pressed, it slides into the locking buckle swivel seat 10, compressing and deforming the spring 21. When the pressure on the locking buckle quick release member 13 is released, the spring 21 releases its elastic force, allowing the locking buckle quick release member 13 to slide outward and return to its original position, automatically engaging with the bar pin 22.

[0032] To prevent the locking buckle quick release member 13 from completely jumping out of the locking buckle swivel seat 10 due to the pressure of the spring structure and thereby affecting use, a stopper groove 18 is formed in the locking buckle quick release member 13, and a positioning block 17 is provided inside the locking buckle swivel seat 10. One end of the positioning block 17 is fixedly connected to the locking buckle swivel seat 10, and the other end of the positioning block 17 is inserted into and slidably connected to the stopper groove 18. The width of the stopper groove 18 is set larger than that of the positioning block 17, so that when the locking buckle quick release member 13 is pressed, the positioning block 17 slides up and down along the stopper groove 18, acting as a stopper for the locking buckle quick release member 13 and reliably preventing the locking buckle quick release member 13 from coming off the locking buckle swivel seat 10.

[0033] In a preferred solution, a plurality of elastic hooks 16 are provided on the side of the swivel seat outer cover 12 close to the locking buckle swivel seat 10, and the elastic hooks 16 are fixedly connected to the swivel seat outer cover 12. The elastic hooks 16 are provided on the side away from the swivel seat outer cover 12 with hook-shaped protrusions that engage with hook grooves 24 opened on the outside of the locking buckle swivel seat 10.

[0034] The engagement design of the elastic hook 16 and the hook groove 24 allows the rotating seat outer cover 12 to be quickly attached and detached without using fastening members such as screws, facilitating inspection and maintenance of the internal components.

[0035] It is necessary to explain in detail that the rear wheel frame 3 is provided with a connecting shaft 31, movable wheels 33 are provided on both left and right ends of the connecting shaft 31, the movable wheels 33 are fixedly connected to the connecting shaft 31, caster brackets 32 are fitted onto both ends of the connecting shaft 31, assembly grooves 34 are opened at the upper ends of the caster brackets 32, the assembly grooves 34 engage with the outer wall of the base 1, fixing bolts are assembled on the outside of the caster brackets 32, the fixing bolts are screwed into the assembly grooves 34 and screwed into bolt holes opened on the outside of the base 1.

[0036] During assembly, the rear wheel frame 3 is connected to the base 1 by engaging the assembly groove 34 of the caster bracket 32 ​​with the outer wall of the base 1 and screwing in the fixing bolt to fix the caster bracket 32 ​​to the base 1. During removal, the fixing bolt is loosened and removed, and the caster bracket 32 ​​and base 1 are separated, allowing the rear wheel frame 3 to be removed.

[0037] Operating principle of the present application When assembling the pet cart, first, the caster brackets 32 of the rear wheel frame 3 are engaged with the outer wall of the base 1 via the assembly grooves 34, and then the caster brackets 32 are secured to the base 1 by screwing in the fixing bolts, completing the assembly of the three-wheeled transport structure. Next, the handle frame 4 is rotated to an appropriate angle, and both ends of the rear support rod 9 are hingedly connected to the handle frame 4 and the base 1, respectively, thereby achieving support and fixing. After that, the front enclosure 6 is rotated to a vertical position, and the sunshade frame 7 is further rotated to cover the upper part of the front enclosure 6. The lock buckle quick release member 13 is pressed to compress the spring 21, and the lock buckle swivel seat 10 is rotated around the lock buckle upper seat 14, and the swivel seat outer cover 12 is fitted onto the outside of the hook pin 22 of the lock buckle lower seat 11. When the pressure on the locking buckle quick release member 13 is released, the spring 21 returns to its original position and presses the locking buckle quick release member 13, causing its inner surface to engage with the annular groove 23 of the bar pin 22. At the same time, the hook-shaped protrusion of the elastic hook 16 engages with the hook groove 24 of the locking buckle swivel seat 10, completing the fastening of the sunshade frame 7 to the front enclosure 6. When removal is required for transportation, the locking buckle quick release member 13 is pressed to release the engagement with the bar pin 22, and the sunshade frame 7 is opened. The rear support rod 9 is retracted, the handle frame 4 is tilted, and the fixing bolt is loosened to separate the rear wheel frame 3 and base 1, reducing the overall volume and lowering packaging and transportation costs.

[0038] In the description of this application, directional terms or terms indicating positional relationships, such as "upper" and "lower," are based on the orientations or positional relationships shown in the drawings. These terms are intended merely to facilitate and simplify the description of this application and do not indicate or imply that the devices or components shown have a specific orientation or must be configured and operated in a specific orientation. Therefore, they should not be understood as limiting this application. Furthermore, the terms "attached," "coupled," and "connected" should be interpreted broadly and may refer to, for example, a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this application depending on the specific circumstances.

[0039] The above is merely a specific implementation of the present application, and the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application are included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be equivalent to the scope of protection of the utility model registration claims.

Claims

1. A medium- to large-sized, low-floor, three-wheeled pet cart, comprising a base 1, a front wheel frame 2 and two rear wheel frames 3 provided at a lower end of the base 1, the front wheel frame 2 being rotatably connected to the base 1, and the rear wheel frames 3 being detachably connected to the base 1; A handle frame 4 is provided on an upper end of the base 1, and a lower end of the handle frame 4 is hinged to the base 1. A front enclosure 6 is provided on one side of the handle frame 4, and the front enclosure 6 is hinged to the handle frame 4. A rear support rod 9 is provided on the other side of the handle frame 4, and both ends of the rear support rod 9 are hinged to the handle frame 4 and the base 1, respectively. A sunshade frame 7 is provided above the front enclosure 6, and one end of the sunshade frame 7 close to the handle frame 4 is hinged to one end of the front enclosure 6 close to the handle frame 4. A rotary push switch 5 is provided at the other end of the sunshade frame 7, and a buckle structure 8 is provided at the other end of the front enclosure 6, and the rotary push switch 5 engages with the buckle structure 8. A medium- to large-sized, low-floor three-wheeled pet cart.

2. The buckle structure 8 includes a locking buckle lower seat 11, which is fixedly connected to the front enclosure 6, and a bar pin 22 is provided on the side of the locking buckle lower seat 11 away from the front enclosure 6, and the bar pin 22 is fixedly connected to the locking buckle lower seat 11, and an annular groove 23 is formed on the outside of the bar pin 22.

2. The medium- to large-sized, low-floor three-wheeled pet cart according to claim 1.

3. The rotary push switch 5 includes a lock buckle rotary seat 10 and a lock buckle upper seat 14, The lock buckle upper seat 14 is fixedly mounted on the outside of the sunshade frame 7, one end of the lock buckle swivel seat 10 is hingedly connected to the lock buckle upper seat 14, and the other end of the lock buckle swivel seat 10 is provided with a lock buckle quick release member 13, which is slidably connected to the inner wall of the lock buckle swivel seat 10. A swivel seat outer cover 12 is provided on the side of the lock buckle swivel seat 10 near the lock buckle lower seat 11, and the swivel seat outer cover 12 engages with the lock buckle swivel seat 10. A through hole 15 is provided in the swivel seat outer cover 12, and a valve hole 19 is provided in the lock buckle quick release member 13. A spring structure for pushing the lock buckle quick release member 13 outward is provided inside the lock buckle swivel seat 10 and the swivel seat outer cover 12.

3. The medium- to large-sized, low-floor three-wheeled pet cart according to claim 2.

4. The spring structure includes a mounting block 20, which is fixedly mounted on the locking buckle quick release member 13 on a side closer to the locking buckle upper seat 14. A spring 21 is fitted to the outside of the mounting block 20, with one end of the spring 21 overlapping the locking buckle quick release member 13 and the other end of the spring 21 overlapping the inner wall of the locking buckle rotating seat 10.

4. The medium- to large-sized, low-floor three-wheeled pet cart according to claim 3.

5. The locking buckle quick release member 13 has a stopper groove 18, and a positioning block 17 is provided inside the locking buckle rotating seat 10. One end of the positioning block 17 is fixedly connected to the locking buckle rotating seat 10, and the other end of the positioning block 17 is inserted into the stopper groove 18 and slidably connected to the stopper groove 18.

4. The medium- to large-sized, low-floor three-wheeled pet cart according to claim 3.

6. A plurality of elastic hooks 16 are provided on the side of the outer cover 12 of the rotary seat near the locking buckle rotary seat 10, and the elastic hooks 16 are fixedly connected to the outer cover 12 of the rotary seat. A hook-shaped protrusion is provided on the side of the elastic hooks 16 away from the outer cover 12, and the hook-shaped protrusion is engaged with a hook groove 24 opened on the outside of the locking buckle rotary seat 10.

4. The medium- to large-sized, low-floor three-wheeled pet cart according to claim 3.

7. The rear wheel frame 3 includes a connecting shaft 31, movable wheels 33 provided on both left and right ends of the connecting shaft 31, the movable wheels 33 fixedly connected to the connecting shaft 31, caster brackets 32 fitted to both ends of the connecting shaft 31, assembly grooves 34 formed at the upper ends of the caster brackets 32, the assembly grooves 34 engaging with the outer wall of the base 1, and fixing bolts mounted on the outer sides of the caster brackets 32, which are threaded into the assembly grooves 34 and threaded into bolt holes formed on the outer side of the base 1.

2. The medium- to large-sized, low-floor three-wheeled pet cart according to claim 1.

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