Double-draw-bar luggage with high bearing capacity

By using mechanical structures such as worms, worm gears, rotary rods and universal wheels in the double trolley bag, the support area of ​​the bag is increased, and the zipper is disassembled and replaced by a micro-motor-driven bevel gear system, the existing double trolley bag is solved. The problems of low performance and insufficient load-bearing capacity have achieved higher load-bearing capacity and a more stable user experience.

CN222466250UActive Publication Date: 2025-02-14RUIAN HUAZHOU LUGGAGE CO LTD
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Patent Information

Application Number
CN202421404319.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2025-02-14
Estimated Expiration
2034-06-19

AI Technical Summary

Technical Problem

The existing double trolley bags are only supported by rollers, with low stability and are easily affected by external forces and fall to the ground, resulting in insufficient load-bearing capacity.

Method used

Using mechanical structures such as worm, worm gear, rotary rod and universal wheel, the worm gear and rotary rod are driven through the worm, thereby driving the universal wheel to rotate, increasing the support area of ​​the bag, and driving the bevel gear system through a micro motor to realize the disassembly of the zipper and replace.

Benefits of technology

It improves the carrying capacity and stability of the luggage, reduces the risk of falling to the ground due to external forces, extends the service life, and simplifies the disassembly and replacement of zippers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of luggage, and discloses a double-draw-bar luggage with high bearing capacity, which comprises a lower luggage body, an upper luggage body is arranged on the rear side of the lower luggage body, the bottom of the lower luggage body and the bottom of the upper luggage body are both fixedly connected with a fixing frame, one side of the fixing frame is rotatably connected with a worm, and the other side of the fixing frame is rotatably connected with the worm. And rotating rods are rotationally connected to the interiors of the two fixing frames correspondingly, worm wheels are fixedly connected to one sides of the outer walls of the rotating rods, the two worm wheels are in engaged connection with the corresponding worms correspondingly, and connecting rods are fixedly connected to the left sides and the right sides of the bottoms of the two rotating rods correspondingly. According to the double-draw-bar luggage disclosed by the utility model, the worm can be rotated to drive the worm gear to rotate, at the moment, the rotating rod can rotate along with the worm gear so as to drive the universal wheels to rotate until the universal wheels are parallel to the ground, the universal wheels can be stored, then the double-draw-bar luggage is supported through the fixing frame, and the luggage does not need to be supported through the universal wheels; therefore, the bearing capacity of the luggage can be improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of bags, in particular to a double-trolley bag with high load-bearing capacity. Background Art

[0002] A double trolley bag is a common travel bag that has two trolley handles, usually with four wheels and one or more zippered storage areas. This design allows the user to easily pull the bag without having to carry the weight.

[0003] Double trolley bags are usually used for short trips or business trips. Their structural design allows users to organize and carry luggage effectively. The size and capacity of this type of bag can be selected according to personal needs and airline regulations, ranging from small suitcases to large travel cases.

[0004] However, the existing double-trolley bags on the market are only supported by rollers during use, and have low stability. They are easily affected by external forces and fall to the ground, thereby reducing the service life of the double-trolley bags and failing to meet the needs of users. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a double-trolley case with high load-bearing capacity, aiming to improve the problem in the prior art that the double-trolley case is supported only by rollers, resulting in low stability and thus reducing its load-bearing capacity.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a double-trolley suitcase with high load-bearing capacity, comprising a lower box body, an upper box body is arranged on the rear side of the lower box body, the bottoms of the lower box body and the upper box body are fixedly connected with fixed frames, one side of the fixed frame is rotatably connected with a worm, the insides of the two fixed frames are rotatably connected with rotating rods, one side of the outer wall of the rotating rod is fixedly connected with a worm wheel, the two worm wheels are respectively meshed with corresponding worm gears, the left and right sides of the bottoms of the two rotating rods are fixedly connected with connecting rods, the bottom ends of the connecting rods are fixedly connected with universal wheels, and a disassembly mechanism is arranged on the front side of the lower box body.

[0007] As a further description of the above technical solution:

[0008] The disassembly mechanism includes an open groove, which is arranged on the front side of the lower box body, and the left and right ends of the inner bottom of the open groove are fixedly connected with support plates, and the adjacent sides of the two support plates are rotatably connected with a bidirectional screw rod, and the middle part of the outer side of the bidirectional screw rod is fixedly connected with a driven bevel gear, and the inner rear side of the open groove is fixedly connected with a micro motor, and the output end of the micro motor is fixedly connected with an active bevel gear, and the active bevel gear is meshed with the driven bevel gear. The left and right sides of the outer wall of the bidirectional screw rod are threadedly connected with movable blocks, and the front side of the movable block is fixedly connected with a bent rod, a baffle is arranged inside the open groove, and a groove is arranged on the rear side of the baffle, and the two bent rods are slidably connected inside the groove, and one end of the bent rod passes through the groove and the lower box body in sequence, and a telescopic pull rod is arranged at the inner bottom of the open groove.

[0009] As a further description of the above technical solution:

[0010] A controller is fixedly connected to the middle upper part of the right side of the lower box body, and the controller is meshingly connected with the micro motor.

[0011] As a further description of the above technical solution:

[0012] A protective cover is arranged on the outer side of the controller, and one side of the protective cover is rotatably connected to the right side of the lower box body.

[0013] As a further description of the above technical solution:

[0014] A zipper is arranged on the outer side of the lower box body, and the lower box body is connected with the upper box body through the zipper.

[0015] As a further description of the above technical solution:

[0016] The disassembly mechanism also includes a slide bar, and the two slide bars are respectively fixedly connected to the upper and lower ends of the adjacent sides of the two support plates, and the upper and lower sides of the two movable blocks are respectively slidably connected to the corresponding outer walls of the slide bars.

[0017] As a further description of the above technical solution:

[0018] The adjacent ends of the two worms are rotatably connected to one side of the inner part of the corresponding fixing frame.

[0019] As a further description of the above technical solution:

[0020] A handle is fixedly connected to the top of the lower box.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, rotating the worm can drive the worm wheel to rotate, and the rotating rod will rotate accordingly to drive the universal wheel to rotate until the universal wheel is parallel to the ground. At this time, the universal wheel can be stored. At this time, the double-trolley case can be supported by the fixed frame, which can increase the support area of ​​the case. The case does not need to be supported by the universal wheel, thereby improving the carrying capacity of the case. The case is not easily affected by external factors and falls to the ground, thereby meeting the needs of users.

[0023] 2. In the utility model, the micro motor can drive the active bevel gear to rotate, and the driven bevel gear will rotate accordingly. At this time, the bidirectional screw will rotate accordingly, thereby driving the movable blocks on both sides to move toward the middle, and the curved rod will move toward the middle accordingly, thereby releasing the limit fixation of the baffle. At this time, the baffle can be removed and the telescopic rod part can be disassembled and replaced. When the telescopic rod is damaged, it can be easily replaced, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a double-trolley case with high load-bearing capacity proposed by the utility model;

[0025] Figure 2 This is a cross-sectional view of a fixed frame structure of a double-trolley case with high load-bearing capacity proposed by the utility model;

[0026] Figure 3 This is a partial structural cross-sectional view of a double-trolley case with high load-bearing capacity proposed by the utility model;

[0027] Figure 4 for Figure 3 Enlarged view of point A.

[0028] Legend:

[0029] 1. Lower box; 2. Disassembly mechanism; 201. Opening slot; 202. Support plate; 203. Bidirectional screw; 204. Driven bevel gear; 205. Micro motor; 206. Driving bevel gear; 207. Movable block; 208. Curved rod; 209. Groove; 210. Baffle; 211. Sliding rod; 212. Telescopic pull rod; 3. Upper box; 4. Fixed frame; 5. Worm; 6. Rotating rod; 7. Worm wheel; 8. Connecting rod; 9. Universal wheel; 10. Handle; 11. Zipper; 12. Controller; 13. Protective cover. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 and Figure 2 , the utility model provides an embodiment: a double-trolley suitcase with high carrying capacity, comprising a lower box body 1, an upper box body 3 is arranged on the rear side of the lower box body 1, the bottoms of the lower box body 1 and the upper box body 3 are fixedly connected with a fixed frame 4, one side of the fixed frame 4 is rotatably connected with a worm 5, the insides of the two fixed frames 4 are rotatably connected with a rotating rod 6, one side of the outer wall of the rotating rod 6 is fixedly connected with a worm gear 7, the two worm gears 7 are respectively meshed with the corresponding worm 5, the left and right sides of the bottoms of the two rotating rods 6 are fixedly connected with a connecting rod 8, the bottom end of the connecting rod 8 is fixedly connected with a universal wheel 9, a disassembly mechanism 2 is arranged on the front side of the lower box body 1, the adjacent ends of the two worm gears 5 are respectively rotatably connected to one side of the inside of the corresponding fixed frame 4, and the top of the lower box body 1 is fixedly connected with a handle 10;

[0032] Specifically, the worm 5 is rotated first, and the worm wheel 7 meshing with it will rotate accordingly. As the worm wheel 7 rotates, the rotating rod 6 will rotate accordingly, thereby driving the universal wheel 9 to rotate. When the universal wheel 9 rotates to a position perpendicular to the ground, we can easily pull the luggage to move. When the double-trolley luggage is not needed, just reverse the above steps to store the universal wheel 9 in the fixed frame 4. In this way, the supporting area of ​​the luggage is increased, and the luggage does not need to be supported by the universal wheel 9, thereby improving the carrying capacity of the luggage.

[0033] Reference Figure 1 , Figure 3 and Figure 4The disassembly mechanism 2 includes an opening slot 201, which is provided at the front side of the lower box body 1. The left and right ends of the inner bottom of the opening slot 201 are fixedly connected with support plates 202. The adjacent sides of the two support plates 202 are rotatably connected with a bidirectional screw rod 203. The middle part of the outer side of the bidirectional screw rod 203 is fixedly connected with a driven bevel gear 204. The inner rear side of the opening slot 201 is fixedly connected with a micro motor 205. The output end of the micro motor 205 is fixedly connected with an active bevel gear 206. The active bevel gear The wheel 206 is meshed and connected with the driven bevel gear 204. The left and right sides of the outer wall of the bidirectional screw rod 203 are both threadedly connected with movable blocks 207. The front side of the movable block 207 is fixedly connected with a bent rod 208. A baffle 210 is provided inside the open groove 201. A groove 209 is provided on the rear side of the baffle 210. The two bent rods 208 are both slidably connected inside the groove 209. One end of the bent rod 208 passes through the groove 209 and the lower box body 1 in sequence. A telescopic pull rod 212 is provided at the inner bottom of the open groove 201.

[0034] Specifically, the micro motor 205 can drive the active bevel gear 206 to rotate, and the driven bevel gear 204 will also rotate due to the engagement with the active bevel gear 206. As the driven bevel gear 204 rotates, the bidirectional screw rod 203 will also rotate. At this time, the movable block 207 on the outside of the bidirectional screw rod 203 moves toward the middle, and the bent rod 208 will move along, which can release the limit fixation of the baffle 210. At this time, the baffle 210 can be easily removed to expose the telescopic pull rod 212. This part is a key component in the entire device. Its disassembly and replacement are relatively simple. This simplicity not only improves the practicability of the device, but also makes maintenance and repair more convenient.

[0035] Reference Figure 1 A controller 12 is fixedly connected to the middle upper part of the right side of the lower box body 1, and the controller 12 is meshed and connected with the micro motor 205. A protective cover 13 is arranged on the outer side of the controller 12, and one side of the protective cover 13 is rotatably connected to the right side of the lower box body 1;

[0036] Specifically, the operation of the micro motor 205 can be controlled by the controller 12, and the protective cover 13 can protect the controller 12 from being damaged by external factors.

[0037] Reference Figure 1 A zipper 11 is provided on the outer side of the lower box body 1, and the lower box body 1 is connected to the upper box body 3 through the zipper 11;

[0038] Specifically, the connection between the upper box body 3 and the lower box body 1 can be easily opened through the zipper 11, and then the desired items can be placed in the bag.

[0039] Reference Figure 3 and Figure 4The disassembly mechanism 2 further includes a slide bar 211, and the two slide bars 211 are respectively fixedly connected to the upper and lower ends of the adjacent sides of the two support plates 202, and the upper and lower sides of the two movable blocks 207 are respectively slidably connected to the outer walls of the corresponding slide bars 211;

[0040] Specifically, the moving track of the moving block 207 can be limited by the sliding rod 211, so that the moving block 207 can move more smoothly.

[0041] Working principle: before using the double-trolley case, first rotate the worm 5, and the worm wheel 7 will rotate accordingly due to the meshing with the worm 5. At this time, the rotating rod 6 will rotate accordingly, thereby driving the universal wheel 9 to rotate until the universal wheel 9 is perpendicular to the ground. At this time, the user can pull the case to move. When the double-trolley case is not needed, the universal wheel 9 can be stored in the fixed frame 4 by reversing the above steps, which can increase the supporting area of ​​the case. The case does not need to be supported by the universal wheel 9, thereby improving the carrying capacity of the case, and the case is not easily affected by external factors and falls to the ground, thereby meeting the use requirements. The needs of the user are met, and when the telescopic pull rod 212 is damaged, the micro motor 205 can drive the active bevel gear 206 to rotate, and the driven bevel gear 204 will also rotate due to the engagement with the active bevel gear 206. At this time, the two-way screw rod 203 will rotate accordingly, thereby driving the movable blocks 207 on both sides to move toward the middle, and the curved rod 208 will move toward the middle accordingly, thereby releasing the limit fixation of the baffle 210. At this time, the baffle 210 can be removed and the telescopic pull rod 212 can be disassembled and replaced. It is relatively simple to disassemble and replace the telescopic pull rod 212, thereby improving the practicality of the device.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-trolley case with high load-bearing capacity, comprising a lower case (1), characterized in that: An upper box body (3) is arranged at the rear side of the lower box body (1); a fixing frame (4) is fixedly connected to the bottom of each of the lower box body (1) and the upper box body (3); a worm (5) is rotatably connected to one side of the fixing frame (4); a rotating rod (6) is rotatably connected to the inside of each of the two fixing frames (4); a worm wheel (7) is fixedly connected to one side of the outer wall of each of the rotating rods (6); the two worm wheels (7) are respectively meshed and connected to the corresponding worm wheels (5); a connecting rod (8) is fixedly connected to the left and right sides of the bottom of each of the two rotating rods (6); a universal wheel (9) is fixedly connected to the bottom end of each of the connecting rods (8); and a disassembly mechanism (2) is arranged at the front side of the lower box body (1).

2. A double-trolley case with high load-bearing capacity according to claim 1, characterized in that: The disassembly mechanism (2) comprises an open slot (201), wherein the open slot (201) is provided at the front side of the lower box body (1), the left and right ends of the inner bottom of the open slot (201) are fixedly connected to support plates (202), the adjacent sides of the two support plates (202) are rotatably connected to bidirectional screw rods (203), the middle part of the outer side of the bidirectional screw rods (203) is fixedly connected to a driven bevel gear (204), the inner rear side of the open slot (201) is fixedly connected to a micro motor (205), the output end of the micro motor (205) is fixedly connected to a driving bevel gear (206), and the driving bevel gear (206) is fixedly connected to the output end of the micro motor (205). 06) is meshedly connected with the driven bevel gear (204), the left and right sides of the outer wall of the bidirectional screw rod (203) are threadedly connected with movable blocks (207), the front side of the movable block (207) is fixedly connected with a bent rod (208), a baffle (210) is arranged inside the open groove (201), a groove (209) is arranged on the rear side of the baffle (210), the two bent rods (208) are slidably connected inside the groove (209), one end of the bent rod (208) passes through the groove (209) and the lower box body (1) in sequence, and a telescopic pull rod (212) is arranged at the inner bottom of the open groove (201).

3. A double-trolley case with high load-bearing capacity according to claim 1, characterized in that: A controller (12) is fixedly connected to the middle upper portion of the right side of the lower box body (1), and the controller (12) is meshingly connected to the micro motor (205).

4. A double-trolley case with high load-bearing capacity according to claim 3, characterized in that: A protective cover (13) is provided on the outside of the controller (12), and one side of the protective cover (13) is rotatably connected to the right side of the lower box body (1).

5. The double-trolley case with high load-bearing capacity according to claim 1, characterized in that: A zipper (11) is provided on the outer side of the lower box body (1), and the lower box body (1) is connected to the upper box body (3) via the zipper (11).

6. A double-trolley case with high load-bearing capacity according to claim 2, characterized in that: The disassembly mechanism (2) further comprises a slide rod (211), wherein the two slide rods (211) are respectively fixedly connected to the upper and lower ends of adjacent sides of the two support plates (202), and the upper and lower sides of the two movable blocks (207) are respectively slidably connected to the outer walls of the corresponding slide rods (211).

7. The double-trolley case with high load-bearing capacity according to claim 1, characterized in that: Adjacent ends of the two worm gears (5) are rotatably connected to one side of the interior of the corresponding fixed frame (4).

8. The double-trolley case with high load-bearing capacity according to claim 1, characterized in that: A handle (10) is fixedly connected to the top of the lower box body (1).