Cart with rear door

Abstract

The utility model discloses a cart with a rear door. The cart with the rear door comprises a cart frame body, walking wheels, a rear side frame and a locking mechanism. The frame main body comprises a front side frame, two side frames and a bottom side frame, the front side frame, the two side frames and the bottom side frame are connected with one another to define a loading cavity, and the loading cavity is provided with an access opening between the rear ends of the two side frames. The walking wheels are arranged on the frame body, the lower end of the rear side frame is pivotally connected to the frame body along the axis in the left-right direction, and the rear side frame is used for covering and opening the access opening. The locking mechanism comprises a positioning seat and a locking screw, the positioning seat comprises a fixing part and an abutting part, the fixing part is fixed to the side frame, the abutting part extends in the front-back direction, the front end of the abutting part is connected with the fixing part, the rear end of the abutting part is provided with a positioning end face, the positioning end face is provided with a locking screw hole, and the locking screw is rotatably connected to the upper end of the rear side frame. And the locking screw and the locking screw hole are correspondingly arranged. The cart with the rear opening door is simple in structure, and the rear side frame can be locked stably.

Description

Technical Field

[0001] This utility model relates to outdoor equipment, and in particular to a rear-opening trolley. Background Technology

[0002] Existing trolleys used for outdoor fishing or camping typically consist of a frame and wheels. The frame includes a front frame, two side frames, and a bottom frame, all interconnected to form a cargo cavity. This cargo cavity has an opening between the rear ends of the side frames. The wheels are mounted on the frame. A rear frame is connected to the frame, with its lower end rotatably connected to the frame and used to close and open the opening. To ensure the stability of the rear frame during operation, locking mechanisms are usually installed on both the side frames and the rear frame to lock its position. However, current rear-door trolleys often use snap-fit ​​locking mechanisms, which are fixed to the rear frame and directly engage with the side frame fittings, resulting in an unstable connection. Some trolleys use complex pin-and-socket structures, which are complex, costly, and also lack sufficient stability. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a rear-opening trolley with a simple structure and stable fixation of the rear frame.

[0004] According to an embodiment of the present invention, a rear-opening trolley includes: a frame body, comprising a front frame, two side frames, and a bottom frame, wherein the front frame, the two side frames, and the bottom frame are interconnected to form a cargo cavity, and the cargo cavity has an opening between the rear ends of the two side frames; wheels disposed on the frame body; a rear frame, the lower end of which is pivotally connected to the frame body along a left-right axis, the rear frame being used to cover and open the opening; and a locking mechanism disposed between the side frames and the rear frame and used to lock the rear frame from covering the opening. The locking mechanism includes a positioning seat and a locking screw. The positioning seat includes a fixing part and an abutment part. The fixing part is fixed to the side frame. The abutment part extends in the front-rear direction. The front end of the abutment part is connected to the fixing part. The rear end of the abutment part is provided with a positioning end face for abutting against the rear side frame. The positioning end face is provided with a locking screw hole. The locking screw is rotatably connected to the upper end of the rear side frame. The locking screw and the locking screw hole are correspondingly provided. The rear side frame can abut against the positioning end face and make the locking screw and the locking screw hole aligned.

[0005] The rear-opening trolley according to the embodiments of this utility model has at least the following beneficial effects: With the above-described structure, when fixing the rear side frame, the rear side frame is abutted against the positioning end face of the rear end of the abutment part, and the rear side frame is fixed by tightening the locking screw into the locking screw hole; when it is necessary to open the rear side frame, the locking screw can be loosened. The above-described rear-opening trolley has a simple locking mechanism and low cost; the positioning end face of the abutment part abuts against and positions the rear side frame, and the locking screw is used for fixing, making the opening and closing operation of the rear side frame convenient and the fixing of the rear side frame firm.

[0006] According to some embodiments of the present invention, a reinforcing rod is connected between the two side frames at their lower rear ends.

[0007] According to some embodiments of the present invention, a rear lower wheel seat is provided at the rear lower end of the side frame, the rear lower wheel seat is provided with the walking wheel, and the reinforcing rod connects the rear lower wheel seats of the two side frames.

[0008] According to some embodiments of the present invention, the lower left and lower right ends of the rear side frame are respectively hinged to the lower rear wheel seats of the two side frames.

[0009] According to some embodiments of the present invention, the frame body is foldable, the reinforcing rod includes a left rod, a hinge seat and a right rod, one end of the left rod and one end of the right rod are hinged to the hinge seat, and the other end of the left rod and the other end of the right rod are respectively hinged to the two side frames.

[0010] According to some embodiments of this utility model, a locking mechanism is provided between each of the two side frames and the rear frame, and the two locking mechanisms are respectively provided at the upper left and upper right ends of the rear frame.

[0011] According to some embodiments of the present invention, the locking screw passes through the rear frame and engages with the rear frame along the axial direction of the locking screw to prevent the locking screw from coming out of the rear frame.

[0012] According to some embodiments of this utility model, the rear side frame includes a hollow tube that can abut against the positioning end face. The two opposite walls of the hollow tube are respectively provided with an inner hole and an outer hole, which are coaxially arranged. The inner hole is located on the side of the hollow tube near the side frame, and its diameter is larger than that of the outer hole. The locking screw includes a stud portion and a handle portion. One end of the stud portion is connected to the handle portion. The stud portion includes an end section and a connecting section. The end section is connected to the handle portion through the connecting section. The connecting section passes through the outer hole, and its diameter is larger than that of the connecting section and the outer hole. The diameter of the end section is less than or equal to the diameter of the inner hole and can extend through the inner hole. The end section is provided with a thread for engaging with the locking screw hole. The size of the end of the handle portion near the outer hole is larger than that of the outer hole.

[0013] According to some embodiments of this utility model, the nail post and the handle are separately provided, the connecting section is threaded, the handle is threaded, and the connecting section is threadedly installed on the handle.

[0014] According to some embodiments of this utility model, the rear frame can be laid flat when opened.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A;

[0019] Figure 3 This is a three-dimensional schematic diagram of the rear frame after it has been opened according to an embodiment of the present utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of an embodiment of the present utility model.

[0021] Figure label:

[0022] The frame body is 100, the front side frame is 110, the side frame is 120, the bottom side frame is 130, and the rear lower wheel seat is 121.

[0023] 200 wheels;

[0024] Rear frame 300, inner hole 310, outer hole 320;

[0025] Locking mechanism 400, positioning seat 410, locking screw 420, fixing part 411, abutting part 412, positioning end face 4121, locking screw hole 4122, nail post part 421, handle part 422, end section 4211, connecting section 4212.

[0026] Reinforcing rod 500, left rod 510, hinge seat 520, right rod 530. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figures 1 to 4A rear-opening trolley includes a frame body 100, wheels 200, a rear side frame 300, and a locking mechanism 400. The frame body 100 includes a front side frame 110, two side frames 120, and a bottom side frame 130. The front side frame 110, the two side frames 120, and the bottom side frame 130 are interconnected to form a cargo cavity. An opening is formed between the rear ends of the two side frames 120 within the cargo cavity. The wheels 200 are mounted on the frame body 100. The lower end of the rear side frame 300 is pivotally connected to the frame body 100 along a left-right axis. The rear side frame 300 is used to cover and open the opening. A locking mechanism 400 is disposed between the side frame 120 and the rear frame 300 and is used to lock the rear frame 300 at the position of the cover opening. The locking mechanism 400 includes a positioning seat 410 and a locking screw 420. The positioning seat 410 includes a fixing part 411 and an abutting part 412. The fixing part 411 is fixed to the side frame 120. The abutting part 412 extends in the front-rear direction. The front end of the abutting part 412 is connected to the fixing part 411. The rear end of the abutting part 412 is provided with a positioning end face 4121 for abutting against the rear frame 300. The positioning end face 4121 is provided with a locking screw hole 4122. The locking screw 420 is rotatably connected to the upper end of the rear frame 300. The locking screw 420 and the locking screw hole 4122 are correspondingly provided. The rear frame 300 can abut against the positioning end face 4121 and make the locking screw 420 and the locking screw hole 4122 aligned.

[0032] In the above structure, when fixing the rear side frame 300, the rear side frame 300 is abutted against the positioning end face 4121 at the rear end of the abutment part 412, and the rear side frame 300 is fixed by tightening the locking screw 420 into the locking screw hole 4122; when it is necessary to open the rear side frame 300, the locking screw 420 can be loosened. The above-described rear-opening trolley has a simple and low-cost locking mechanism; the positioning end face 4121 of the abutment part 412 abuts against and positions the rear side frame 300, and the locking screw 420 is used for locking and fixing. The rear side frame 300 is easy to open and close, and the rear side frame 300 is firmly fixed.

[0033] In one embodiment, the fixing part 411 is a cylindrical structure and is sleeved and fixed to the tubular component that makes up the side frame 120, and is fixed by screws. Of course, in other embodiments, the fixing part 411 may also adopt other structures to fix to the side frame 120, such as snap-fit, fastener connection, etc.

[0034] Since the rear side frame 300 can be opened, in this embodiment, a reinforcing rod 500 is connected between the lower rear ends of the two side frames 120, thereby strengthening the rear end of the trolley and reducing left and right swaying; in addition, the reinforcing rod 500 is mainly connected to the lower rear end of the side frame 120, so opening the rear side frame 300 does not affect the entry and exit of items.

[0035] In this embodiment, a rear lower wheel seat 121 is provided at the lower rear end of the side frame 120, and a traveling wheel 200 is provided on the rear lower wheel seat 121. A reinforcing rod 500 connects the rear lower wheel seats 121 of the two side frames 120. With the above structure, the reinforcing rod 500 connects to the rear lower wheel seat 121 on which the traveling wheel 200 is provided, making the structure of the rear-opening trolley more stable.

[0036] In this embodiment, the lower left and lower right ends of the rear side frame 300 are respectively hinged to the lower rear wheel seats 121 of the two side frames 120. With the above structure, the lower rear wheel seats 121 where the traveling wheels 200 are mounted serve as hinged supports for the rear side frame 300, making the structure more stable.

[0037] In this embodiment, the frame body 100 is foldable. The reinforcing rod 500 includes a left rod 510, a hinge seat 520, and a right rod 530. One end of the left rod 510 and one end of the right rod 530 are hinged to the hinge seat 520, and the other ends of the left rod 510 and the right rod 530 are respectively hinged to the two side frames 120. With the above structure, when the frame body 100 is folded, the left rod 510 and the right rod 530 can be folded in half through the hinge seat 520, thus folding simultaneously. Specifically, the other ends of the left rod 510 and the right rod 530 are hinged to the rear lower wheel seat 121 of the side frame 120.

[0038] In this embodiment, a locking mechanism 400 is provided between the two side frames 120 and the rear frame 300. The two locking mechanisms 400 are respectively provided at the upper left and upper right ends of the rear frame 300, so that both sides of the rear frame 300 can be locked and fixed, making the structure of the trolley more stable.

[0039] In this embodiment, the locking screw 420 passes through the rear frame 300 and engages with the rear frame 300 along the axial direction of the locking screw 420 to prevent the locking screw 420 from coming out of the rear frame 300. With the above structure, the locking screw 420 is confined to the rear frame 300, thus preventing it from coming out, avoiding loss of the locking screw 420, and facilitating operation.

[0040] In this embodiment, the rear frame 300 includes a hollow tube that abuts against the positioning end face 4121. The two opposite walls of the hollow tube are respectively provided with an inner hole 310 and an outer hole 320, which are coaxially arranged. The inner hole 310 is located on the side of the hollow tube near the side frame 120, and its diameter is larger than that of the outer hole 320. The locking screw 420 includes a post portion 421 and a handle portion 422. One end of the post portion 421 is connected to the handle portion 422. The post portion 421 includes an end section 42. The end section 4211 is connected to the handle portion 422 via the connecting section 4212. The connecting section 4212 passes through the outer hole 320. The diameter of the end section 4211 is larger than the diameter of the connecting section 4212 and the outer hole 320, while the diameter of the end section 4211 is less than or equal to the diameter of the inner hole 310 and can protrude through the inner hole 310. The end section 4211 is provided with threads for engaging with the locking screw hole 4122. The end of the handle portion 422 near the outer hole 320 is larger than the outer hole 320. The outer hole 320 and the inner hole 310, along with the end section 4211 and the connecting section 4212 of the stud portion 421, ensure that the locking screw 420 will not come out of the hollow tube of the rear side frame 300. This structure achieves the connection between the locking screw 420 and the rear side frame 300, is simple, and easy to implement. In this embodiment, the size of the end of the handle portion 422 near the outer hole 320 is larger than that of the outer hole 320, specifically, the diameter or width may be larger than the diameter of the outer hole 320.

[0041] In this embodiment, the post portion 421 and the handle portion 422 are separate components. The connecting section 4212 is threaded, and the handle portion 422 is threaded. The connecting section 4212 is threaded onto the handle portion 422. During installation, the handle portion 422 and the post portion 421 can be separated first. The connecting section 4212 of the post portion 421 is inserted from the inner hole 310 side and passes through the outer hole 320 side. Then, the handle portion 422 is threaded onto it to complete the installation. With the above structural design, the installation of the locking screw 420 is convenient.

[0042] It is conceivable that in other embodiments, the locking screw 420 is not limited to the structure described above for connecting to the rear frame 300. For example, the locking screw 420 can be restricted from coming out by a C-shaped retaining ring. Those skilled in the art can make reasonable configurations according to the actual situation.

[0043] In this embodiment, the rear shelf 300 can be laid flat when opened, making it convenient for carrying items.

[0044] In this embodiment, the open rear frame 300 can be supported by connecting a pull rope between the rear frame 300 and the side frame 120, or by setting some limiting structures, so that the rear frame 300 can be placed flat.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A rear- access door cart, characterized in that, The utility model relates to a kind of foldable trolley, including: Frame body (100), including front side frame (110), two side frames (120) and bottom side frame (130), the front side frame (110), two the side frame (120) and the bottom side frame (130) are connected to form load cavity, and the load cavity is formed with access opening between the rear end of two the side frame (120); Walking wheel (200) is arranged in the frame body (100); Rear side frame (300), lower end is pivotally connected to the frame body (100) along the axis of left and right direction, and the rear side frame (300) is used to cover and open the access opening; Locking mechanism (400) is arranged between the side frame (120) and the rear side frame (300) and is used to lock the position of the rear side frame (300) covering the access opening;The locking mechanism (400) includes positioning seat (410) and locking screw (420), the positioning seat (410) includes fixed part (411) and abutting portion (412), the fixed part (411) is fixed to the side frame (120), the abutting portion (412) extends along the front and back direction, the front end of the abutting portion (412) is connected with the fixed part (411), and the rear end of the abutting portion (412) is provided with positioning end face (4121) for abutting with the rear side frame (300), the positioning end face (4121) is provided with locking screw hole (4122), the locking screw (420) is rotatably connected to the upper end of the rear side frame (300), the locking screw (420) and the locking screw hole (4122) are correspondingly arranged, and the rear side frame (300) can abut on the positioning end face (4121) and make the locking screw (420) and the locking screw hole (4122) align.

2. The rear- access door cart of claim 1, wherein: Two the side frame (120) is connected with reinforcing rod (500) between rear lower end.

3. The rear- access door cart of claim 2, wherein: The rear lower wheel seat (121) is provided at the rear lower end of the side frame (120), the walking wheel (200) is provided in the rear lower wheel seat (121), and the reinforcing rod (500) connects the rear lower wheel seat (121) of two the side frame (120).

4. The rear- access door cart of claim 3, wherein: The left lower end and the right lower end of the rear side frame (300) are respectively hinged to the rear lower wheel seat (121) of two the side frame (120).

5. The rear- swing door cart of claim 2, wherein: The frame body (100) can be folded, the reinforcing rod (500) includes left rod (510), hinged seat (520) and right rod (530), one end of the left rod (510) and one end of the right rod (530) are hinged to the hinged seat (520), and the other end of the left rod (510) and the other end of the right rod (530) are respectively hinged to two the side frame (120).

6. The rear- access door cart of claim 1, wherein: The locking mechanism (400) is respectively arranged between two the side frame (120) and the rear side frame (300), and the locking mechanism (400) is respectively arranged corresponding to the left upper end and the right upper end of the rear side frame (300).

7. The rear- access door cart of claim 1, wherein: The locking screw (420) is arranged in the rear side frame (300) and is in axial clamping fit with the rear side frame (300) along the axis of the locking screw (420) to limit the locking screw (420) from coming out of the rear side frame (300).

8. A cart according to claim 7, wherein: The rear side frame (300) comprises a hollow tube capable of abutting against the positioning end face (4121), two opposite tube walls of the hollow tube are respectively provided with an inner hole (310) and an outer hole (320), the inner hole (310) and the outer hole (320) are coaxially arranged, the inner hole (310) is arranged on the side of the hollow tube close to the side frame (120), the diameter of the inner hole (310) is greater than the diameter of the outer hole (320), the locking screw (420) comprises a pin column part (421) and a handle part (422), one end of the pin column part (421) is connected with the handle part (422), the pin column part (421) comprises a terminal segment (4211) and a connecting segment (4212), the terminal segment (4211) is connected with the handle part (422) through the connecting segment (4212), the connecting segment (4212) is arranged in the outer hole (320), the diameter of the terminal segment (4211) is greater than the diameter of the connecting segment (4212) and the outer hole (320), the diameter of the terminal segment (4211) is less than or equal to the diameter of the inner hole (310) and can extend out through the inner hole (310), the terminal segment (4211) is provided with threads for cooperating with the locking screw hole (4122), the size of one end of the handle part (422) close to the outer hole (320) is greater than the outer hole (320).

9. A rear- access door stroller according to claim 8, wherein: The pin column part (421) and the handle part (422) are separately arranged, the connecting segment (4212) is provided with threads, the handle part (422) is provided with a screw hole, and the connecting segment (4212) is screw-mounted in the handle part (422).

10. The rear- swing door cart of claim 1, wherein: The rear side frame (300) can be arranged flat when opened.

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