Convenient mobile storage device

By designing a convenient mobile storage device, and utilizing the combination and folding functions of the support body and the mounting frame, the problem of inconvenient storage and movement after the modification of the car door is solved, thus realizing safe transportation of the car door and improving space utilization efficiency.

CN223864888UActive Publication Date: 2026-02-03GUANGDONG SANYOU TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520112083.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-16
Publication Date
2026-02-03
Estimated Expiration
2035-01-16

AI Technical Summary

Technical Problem

Modified car doors are inconvenient to store and move after disassembly and reassembly, and are prone to wear and tear.

Method used

Design a convenient mobile storage device, including a support body, a walking mechanism, a mounting frame, and connecting components. The support body consists of first and second support frames. The frames are detachably connected and folded through connecting components and hinge components. The mounting frame is used for positioning and supporting the vehicle door. The walking mechanism enables movement.

Benefits of technology

It improves the convenience of car door storage and transportation, reduces the risk of wear and tear, and increases the utilization rate of garage space, making it suitable for the needs of different spaces.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a convenient and fast mobile storage device which comprises a supporting body, a walking mechanism, a mounting frame body, a first connecting assembly and a hinge assembly, and the supporting body comprises a first supporting frame body and a second supporting frame body; the walking mechanism is used for realizing a moving function; the mounting frame body comprises a first mounting frame and a second mounting frame; the first connecting assembly is used for installing and connecting the first supporting frame body and the second supporting frame body together; the hinging assembly is used for hinging and connecting the side parts of the first supporting frame body and the second supporting frame body together; the first mounting frame and the second mounting frame are used for mounting and positioning the vehicle door, the vehicle door is not prone to being abraded and collided, the folding function is achieved, the occupied space can be relatively small, the utilization rate of the garage space is increased, and the vehicle can be conveniently mounted; and the first supporting frame body and the second supporting frame body can change the use combination state, so that the vehicle door can be suitable for different spaces, and a user can conveniently store, transport and use the vehicle door.
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Description

Technical Field

[0001] This utility model relates to the technical field of modified car door storage and handling devices, and in particular to a convenient mobile storage device. Background Technology

[0002] Many outdoor enthusiasts own SUVs, such as modified vehicles, whose doors can be removed to enhance the outdoor experience for passengers. Once removed, the doors need to be stored properly to prevent damage. Furthermore, after disassembling and reassembling the doors, the modified doors need to be reinstalled, which is inconvenient for storage and movement due to the relatively large and heavy nature of the doors, and the original doors are prone to wear and tear. Therefore, there is a need to design a convenient mobile storage device that can be easily carried in the vehicle to facilitate the storage and transport of the doors. Utility Model Content

[0003] The purpose of this invention is to provide a convenient mobile storage device to solve the problems mentioned above.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This application provides a convenient mobile storage device, comprising:

[0006] The support body includes a first support frame and a second support frame, wherein a first end of the first support frame and a first end of the second support frame are installed together;

[0007] A walking mechanism is located at the bottom of the first support frame and the second support frame to realize the movement function;

[0008] Mounting frame for mounting a vehicle door, including a first mounting frame and a second mounting frame, wherein the first mounting frame can be folded and mounted to the top of the first end of the first support frame, and the second mounting frame can be folded and mounted to the top of the first end of the second support frame;

[0009] The first connecting component is detachably installed on the first side of the first end of the first support frame and the second support frame, for connecting the first support frame and the second support frame together.

[0010] A hinge assembly is installed on the second side of the first end of the first support frame and the second support frame to hinge the sides of the first support frame and the second support frame together; when the first connecting assembly is disassembled, the first support frame and the second support frame can rotate through the hinge assembly and can be arranged side by side.

[0011] In one possible implementation, a second connection component is also included;

[0012] The second connecting component is detachably installed on the second end of the first support frame and the second support frame; when the first connecting component is detached, the first support frame and the second support frame can rotate through the hinge component and be arranged side by side, and the second connecting component can connect the second end of the first support frame and the second support frame together.

[0013] In one possible implementation, the hinge assembly includes a first hinge portion, a second hinge portion, and a hinge shaft. The first hinge portion is mounted to a second side portion of a first end of the first support frame, the second hinge portion is mounted to the second support frame, and the hinge shaft is detachably mounted between the first hinge portion and the second hinge portion, allowing the first hinge portion and the second hinge portion to rotate relative to each other.

[0014] In one possible implementation, the first connecting component includes a snap-fit ​​positioning plate, a positioning shaft, and an adjustment knob.

[0015] The first end of the snap-fit ​​positioning plate is rotatably mounted on the first side of the first end of the first support frame, and the second end of the snap-fit ​​positioning plate is provided with a slot.

[0016] The positioning shaft is installed on the first side of the first end of the second support frame, and the slot can be snapped onto the outer periphery of the positioning shaft.

[0017] The adjustment knob is threaded onto the positioning shaft and can abut against the side of the snap-fit ​​positioning plate to position the snap-fit ​​positioning plate.

[0018] In one possible implementation, the second connecting component has the same structural components as the first connecting component.

[0019] In one possible implementation, the bottom of the first mounting bracket is hinged to the top of the first end of the first support frame via a hinge seat. The hinge seat is provided with a positioning pin that passes through the hinge seat and the first mounting bracket, so that the first mounting bracket can be in a vertical state.

[0020] In one possible implementation, the second mounting bracket and the first mounting bracket have the same structural components.

[0021] In one possible implementation, both the first mounting bracket and the second mounting bracket are fitted with a connecting bracket for mounting the vehicle door.

[0022] A tightening threaded post runs through the connecting frame. One end of the tightening threaded post is fixed to the side of the connecting frame, and the other end is threaded to a connecting frame adjustment knob, which is used to adjust the deformation of the connecting frame so that the height of the connecting frame can be adjusted on the first mounting frame and the second mounting frame.

[0023] In one possible implementation, both the first support frame and the second support frame are equipped with load-bearing beams.

[0024] In one possible implementation, the load-bearing crossbeam has a slot, and a pair of adjusting screws are movably mounted on the slot for positioning the door.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0026] In this utility model, the first mounting bracket and the second mounting bracket are used to install and position the car door, making the car door less prone to wear and damage. They also have a folding function, which can occupy relatively less space, improve the utilization rate of garage space, and facilitate the car's transport. In addition, the first support frame and the second support frame can be used in different combinations to suit different spaces, making it convenient for users to store and transport the car door. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the present invention from a top view.

[0029] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic diagram of the structure of the first support frame 101 and the second support frame 102 arranged side by side in this utility model;

[0031] Figure 5 This is a schematic diagram of the first support frame 101 or the second support frame 102 used alone in this utility model.

[0032] Marked in the image:

[0033] 100. First side; 200. Second side;

[0034] 1. Support body; 101. First support frame; 102. Second support frame;

[0035] 2. Walking mechanism;

[0036] 3. Mounting frame; 301. First mounting frame; 302. Second mounting frame;

[0037] 4. First connecting component; 401. Snap-fit ​​positioning plate 1; 402. Positioning shaft 1; 403. Adjustment knob 1; 404. Snap-fit ​​slot;

[0038] 5. Hinge assembly; 501. First hinge part; 502. Second hinge part; 503. Hinge shaft;

[0039] 6. Second connecting component; 601. Snap-fit ​​positioning plate two; 602. Positioning shaft two; 603. Adjustment knob two;

[0040] 7. Hinge seat; 8. Locating pin;

[0041] 800. Connecting bracket; 9. Tightening threaded column; 10. Connecting bracket adjustment knob; 11. Bearing crossbeam; 12. Strip groove; 13. Adjusting screw. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0043] Based on related technologies, many outdoor enthusiasts own SUVs, such as modified vehicles, whose doors can be removed to provide passengers with more outdoor enjoyment. Once the doors are removed, they need to be stored properly to prevent damage. Moreover, after removing and installing the doors, the modified doors also need to be reinstalled. Due to the relatively large and heavy nature of the doors, such storage and movement are inconvenient, and the original doors are prone to wear and tear.

[0044] To address the aforementioned issues, a convenient mobile storage device needs to be designed to facilitate the storage and transport of vehicle doors. Alternatively, this convenient mobile storage device can also be used for the storage and transport of other items, not just vehicle doors. The following section will only detail the storage and transport of vehicle doors; the storage and transport of other items will not be elaborated upon.

[0045] First, use Figure 1 The overall structure of this convenient portable storage device will be explained. Figure 1 This is a three-dimensional structural diagram of the present invention.

[0046] This convenient mobile storage device includes a support body 1, a walking mechanism 2, a mounting frame 3, a first connecting component 4, and a hinge component 5, wherein:

[0047] The support body 1 is used to support and bear the load for the car door. The support body 1 includes a first support frame 101 and a second support frame 102 that are assembled together. Specifically, the first end of the first support frame 101 and the first end of the second support frame 102 are installed together, that is, they form an elongated support body 1 with a horizontal direction.

[0048] The traveling mechanism 2 can be used for moving and transporting the door. The traveling mechanism 2 can be multiple omnidirectional pulleys, which are located at the bottom of the first support frame 101 and the second support frame 102, that is, the first support frame 101 and the second support frame 102 can realize the movement function.

[0049] Mounting bracket 3 is installed onto support 1 for mounting car doors removed from the vehicle body. Specifically, mounting bracket 3 may include a first mounting bracket 301 and a second mounting bracket 302. The first mounting bracket 301 is foldable and mounted to the top of the first end of the first support frame 101, and the second mounting bracket 302 is foldable and mounted to the top of the first end of the second support frame 102.

[0050] The first mounting bracket 301 and the second mounting bracket 302 have folded and vertical states. In the folded state, the first mounting bracket 301 and the second mounting bracket 302 are arranged parallel to the first support frame 101 and the second support frame 102. This folded state occupies relatively little space, improving the utilization of garage space and facilitating vehicle transport. In the vertical state, the first mounting bracket 301 and the second mounting bracket 302 are arranged perpendicular to the first support frame 101 and the second support frame 102. The bottoms of multiple disassembled car doors can be respectively installed onto the first support frame 101 and the second support frame 102. At this time, one side of the car door located on the first support frame 101 can be installed onto the first mounting bracket 301, and one side of the car door located on the second support frame 102 can be installed onto the second mounting bracket 302, serving as a mounting and positioning mechanism and preventing wear and damage to the car doors.

[0051] The first connecting component 4 is a detachable connecting component. The first connecting component 4 can be detachably installed onto the first side portion 100 of the first end of the first support frame 101 and the second support frame 102, so as to connect the first support frame 101 and the second support frame 102 together.

[0052] When the first side portion 100 of the first end of the first support frame 101 and the second support frame 102 does not need to be connected, the first connecting component 4 can be disassembled, that is, the first side portion 100 of the first end of the first support frame 101 and the second support frame 102 can lose the connection relationship.

[0053] The hinge assembly 5 is a detachable hinge component. The hinge assembly 5 can be installed on the second side 200 of the first end of the first support frame 101 and the second support frame 102 to hinge the sides of the first support frame 101 and the second support frame 102 together.

[0054] like Figure 4 As shown, when it is necessary to change the usage combination state of the first support frame 101 and the second support frame 102 so that the first support frame 101 and the second support frame 102 are arranged side by side, the first connecting component 4 is disassembled, and the first support frame 101 and the second support frame 102 are rotated through the hinge component 5 to be arranged side by side. In this way, the first support frame 101 and the second support frame 102 can be used in different spaces, which is convenient for users to store and transport the car door.

[0055] In some embodiments, such as Figure 1 As shown. Figure 1 This is a three-dimensional structural diagram of the present invention. The convenient mobile storage device also includes a second connecting component 6, which is a detachable connecting part. The second connecting component 6 can be detachably installed onto the second end of the first support frame 101 and the second support frame 102.

[0056] like Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of the first support frame 101 and the second support frame 102 arranged side by side in this utility model. When it is necessary to change the usage combination state of the first support frame 101 and the second support frame 102 so that the first support frame 101 and the second support frame 102 are arranged side by side, the first connecting component 4 is disassembled. At this time, the first support frame 101 and the second support frame 102 can be rotated through the hinge component 5 to be arranged side by side. At this time, the second connecting component 6 can connect the second ends of the first support frame 101 and the second support frame 102 together, ensuring the stability of the first support frame 101 and the second support frame 102 arranged side by side.

[0057] In some embodiments, such as Figure 3 As shown, Figure 3 This utility model Figure 1 Enlarged schematic diagram at point A. Regarding the specific components and structural principle of the hinge assembly 5: The hinge assembly 5 may include a first hinge part 501, a second hinge part 502, and a hinge shaft 503.

[0058] The first hinge portion 501 is installed on the second side portion 200 at the first end of the first support frame 101, and the second hinge portion 502 is installed on the second support frame 102. The second hinge portion 502 is adapted to the position of the first hinge portion 501 and can be assembled together.

[0059] The hinge shaft 503 extends through the first hinge portion 501 and the second hinge portion 502. A knob is threaded onto the top of the hinge shaft 503, and a nut is attached to the bottom end of the top of the hinge shaft 503. That is, the hinge shaft 503 is detachably installed between the first hinge portion 501 and the second hinge portion 502, allowing the first hinge portion 501 and the second hinge portion 502 to rotate relative to each other.

[0060] In this embodiment, as Figure 5 As shown, Figure 5 This is a schematic diagram illustrating the use of either the first support frame 101 or the second support frame 102 individually in this utility model. When the first support frame 101 and the second support frame 102 need to be disassembled and used separately, the first connecting assembly 4 is completely disassembled, and the first side portion 100 at the first end of the first support frame 101 and the second support frame 102 loses its connection. Then, the hinge shaft 503 is detached from the first hinge portion 501 and the second hinge portion 502, and the second side portion 200 at the first end of the first support frame 101 and the second support frame 102 loses its connection. Thus, the first support frame 101 and the second support frame 102 can be completely disassembled, and the first support frame 101 and the second support frame 102 can be used individually. After being separated, each requires less space, making them suitable for different spaces and easy to place.

[0061] In some embodiments, such as Figure 2 As shown, Figure 2 This is a top-view perspective of the three-dimensional structure of the present invention. The specific structure and working principle of the first connecting component 4 are as follows: The first connecting component 4 includes a snap-fit ​​positioning plate 401, a positioning shaft 402, and an adjustment knob 403.

[0062] The first end of the snap-fit ​​positioning plate 401 is rotatably mounted onto the first side portion 100 of the first end of the first support frame 101, and the second end of the snap-fit ​​positioning plate 401 has a snap-fit ​​slot 404. The positioning shaft 402 is mounted onto the first side portion 100 of the first end of the second support frame 102, and the snap-fit ​​slot 404 can snap onto the outer periphery of the positioning shaft 402. The adjusting knob 403 is threaded onto the positioning shaft 402 and can abut against the side of the snap-fit ​​positioning plate 401 to position the snap-fit ​​positioning plate 401.

[0063] In this embodiment, when the first support frame 101 and the second support frame 102 need to be connected together, the slot 404 on the snap-fit ​​positioning plate 401 can be snapped onto the outer periphery of the positioning shaft 402, causing the adjustment knob 403 to rotate. The rotating adjustment knob 403 can fix the snap-fit ​​positioning plate 401 onto the positioning shaft 402.

[0064] When the first support frame 101 and the second support frame 102 need to be separated, the adjustment knob 403 can be loosened to remove the snap-fit ​​positioning plate 401 from the outer periphery of the positioning shaft 402. The whole assembly is easy to install and disassemble and convenient to use.

[0065] In some embodiments, such as Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of the first support frame 101 and the second support frame 102 arranged side by side in this utility model. The second connecting component 6 includes a snap-fit ​​positioning plate 601, a positioning shaft 602, and an adjustment knob 603. The second connecting component 6 has the same structural components and works on the same principle as the first connecting component 4. The similarities will not be described in detail here. For specific details, please refer to the working principle of the first connecting component 4. The only difference is the installation position. Specifically, the positioning shaft 602 is installed on the second end of the first support frame 101, and the snap-fit ​​positioning plate 601 is installed on the second end of the second support frame 102.

[0066] In some embodiments, such as Figure 1 and Figure 2 As shown, Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 2 This is a top-view perspective of the three-dimensional structure of the present invention. The second mounting bracket 302 and the first mounting bracket 301 have the same structural components. Since the second mounting bracket 302 and the first mounting bracket 301 have the same structural components and completely the same working principle, only the specific structure and working principle of the first mounting bracket 301 will be described here, and the second mounting bracket 302 will not be described in detail.

[0067] The bottom of the first mounting bracket 301 is hinged to the top of the first end of the first support frame 101 via the hinge seat 7. Both the first mounting bracket 301 and the hinge seat 7 are provided with through holes. The hinge seat 7 is provided with a positioning pin 8 that passes through the hinge seat 7 and the first mounting bracket 301. The positioning pin 8 is inserted into the through hole, which allows the first mounting bracket 301 to be in a vertical state.

[0068] In this embodiment, when the first mounting bracket 301 and the second mounting bracket 302 need to be folded and stored, the positioning pin 8 can be removed, and the first mounting bracket 301 and the second mounting bracket 302 can be rotated and adjusted. That is, the first mounting bracket 301 and the first support frame 101 are in a horizontal state, and the second mounting bracket 302 and the second support frame 102 are in a horizontal state.

[0069] When the first mounting bracket 301 and the second mounting bracket 302 need to be in a vertical position, the first mounting bracket 301 and the second mounting bracket 302 are set vertically, and the positioning pin 8 is inserted into the through hole, so that the first mounting bracket 301 can be in a vertical position.

[0070] In some embodiments, such as Figure 1 As shown, Figure 1 This is a three-dimensional structural diagram of the present invention. A connecting bracket 800 for installing a vehicle door is sleeved on both the first mounting bracket 301 and the second mounting bracket 302. At least two connecting brackets 800 are respectively located on both sides of the first mounting bracket 301 and the second mounting bracket 302.

[0071] A tightening threaded post 9 passes through the connecting frame 800. One end of the tightening threaded post 9 is fixed to the side of the connecting frame 800, and the other end is threaded to the connecting frame adjustment knob 10, which is used to adjust the deformation of the connecting frame 800 so that the height of the connecting frame 800 can be adjusted on the first mounting frame 301 and the second mounting frame 302.

[0072] In this embodiment, the connecting bracket 800 is provided with a plug tube that is compatible with the car door. After the car door is removed, it can be adapted and installed on the connecting bracket 800. By loosening and adjusting the connecting bracket adjustment knob 10, the position and height of the connecting bracket 800 on the first mounting bracket 301 and the second mounting bracket 302 can be adjusted to facilitate the installation of car doors of different heights.

[0073] In some embodiments, such as Figure 1 As shown, Figure 1 This is a three-dimensional structural diagram of the present invention. A load-bearing crossbeam 11 is installed on both the first support frame 101 and the second support frame 102. A strip-shaped groove 12 is formed on the load-bearing crossbeam 11, and a pair of adjusting screws 13 are movably installed on the strip-shaped groove 12 for positioning the vehicle door.

[0074] In this embodiment, the load-bearing crossbeam 11 is used to support the bottom of the car door. The bottom of the car door can be located between two adjusting screws 13. After the pair of adjusting screws 13 are tightened, the position of the bottom of the car door can be fixed. The adjusting screws 13 can move along the strip groove 12, which facilitates the position change of the adjusting screws 13, thereby adapting to the bottom of the car door for fixation.

[0075] In the description of this utility model, it should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0076] Furthermore, in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0077] On the other hand, it should be noted that, unless otherwise explicitly specified and limited, the terms "located at," "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A convenient mobile storage device, characterized in that, include: The support body includes a first support frame and a second support frame, wherein a first end of the first support frame and a first end of the second support frame are installed together; A walking mechanism is located at the bottom of the first support frame and the second support frame to realize the movement function; Mounting frame for mounting a vehicle door, including a first mounting frame and a second mounting frame, wherein the first mounting frame can be folded and mounted to the top of the first end of the first support frame, and the second mounting frame can be folded and mounted to the top of the first end of the second support frame; The first connecting component is detachably installed on the first side of the first end of the first support frame and the second support frame, for connecting the first support frame and the second support frame together. A hinge assembly is installed on the second side of the first end of the first support frame and the second support frame to hinge the sides of the first support frame and the second support frame together; when the first connecting assembly is disassembled, the first support frame and the second support frame can rotate through the hinge assembly and can be arranged side by side.

2. The convenient mobile storage device according to claim 1, characterized in that, It also includes a second connection component; The second connecting component is detachably installed on the second end of the first support frame and the second support frame; when the first connecting component is detached, the first support frame and the second support frame can rotate through the hinge component and be arranged side by side, and the second connecting component can connect the second end of the first support frame and the second support frame together.

3. The convenient mobile storage device according to claim 1, characterized in that, The hinge assembly includes a first hinge portion, a second hinge portion, and a hinge shaft. The first hinge portion is mounted on the second side of the first end of the first support frame, the second hinge portion is mounted on the second support frame, and the hinge shaft is detachably mounted between the first hinge portion and the second hinge portion, allowing the first hinge portion and the second hinge portion to rotate relative to each other.

4. The convenient mobile storage device according to claim 2, characterized in that, The first connecting component includes a snap-fit ​​positioning plate, a positioning shaft, and an adjustment knob; The first end of the snap-fit ​​positioning plate is rotatably mounted on the first side of the first end of the first support frame, and the second end of the snap-fit ​​positioning plate is provided with a slot. The positioning shaft is installed on the first side of the first end of the second support frame, and the slot can be snapped onto the outer periphery of the positioning shaft. The adjustment knob is threaded onto the positioning shaft and can abut against the side of the snap-fit ​​positioning plate to position the snap-fit ​​positioning plate.

5. The convenient mobile storage device according to claim 4, characterized in that, The second connecting component has the same structural components as the first connecting component.

6. The convenient mobile storage device according to claim 1, characterized in that, The bottom of the first mounting bracket is hinged to the top of the first end of the first support frame via a hinge seat. The hinge seat is provided with a positioning pin that passes through the hinge seat and the first mounting bracket, so that the first mounting bracket can be in a vertical state.

7. The convenient mobile storage device according to claim 6, characterized in that, The second mounting bracket and the first mounting bracket have the same structural components.

8. The convenient mobile storage device according to claim 1, 6, or 7, characterized in that, Both the first and second mounting brackets are fitted with connecting brackets for installing vehicle doors. A tightening threaded post runs through the connecting frame. One end of the tightening threaded post is fixed to the side of the connecting frame, and the other end is threaded to a connecting frame adjustment knob, which is used to adjust the deformation of the connecting frame so that the height of the connecting frame can be adjusted on the first mounting frame and the second mounting frame.

9. The convenient mobile storage device according to claim 1, characterized in that, Both the first and second support frames are equipped with load-bearing crossbeams.

10. The convenient mobile storage device according to claim 9, characterized in that, The load-bearing crossbeam has a slot, and a pair of adjusting screws are movably installed on the slot for positioning the door.