Pressure-resistant draw-bar box

Abstract

The utility model relates to the technical field of draw-bar boxes, and discloses a pressure-resistant draw-bar box which comprises a first box body and a second box body, fixing columns are fixedly connected to the interiors of the first box body and the second box body, threaded columns are in threaded connection to the interiors of the fixing columns, rotary knobs are fixedly connected to the bottom ends of the threaded columns, and the rotary knobs are fixedly connected to the bottom ends of the threaded columns. A fixed seat is fixedly connected to the interior of the fixed column, an elastic piece is arranged at the bottom end of the fixed seat, a mounting pin is slidably connected to the interior of the knob, the mounting pin is slidably connected to the interior of the elastic piece, a mounting seat is fixedly connected to the bottom end of the mounting pin, and moving wheels are rotatably connected to the bottom of the mounting seat. According to the draw-bar box disclosed by the utility model, the mounting pins are inserted into the elastic sheets to be fixed, so that the effect that the wheels are convenient to replace is realized, and the problem that when the wheels are damaged and need to be replaced, the wheels can only be replaced by professional personnel by using professional tools, and the process is relatively complicated is solved, so that the flexibility of the draw-bar box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley cases, in particular to a pressure-resistant trolley case. Background Technique

[0002] A trolley case is a kind of luggage case, usually used for traveling or carrying items. It is usually composed of a case with a telescopic handle and two or four wheels, so that it can be easily rolled on the ground. The design of the trolley case enables users to conveniently drag or push it without bearing excessive weight. This type of luggage case is usually used in travel places such as airports, railway stations, hotels, etc., providing convenience and comfort for passengers;

[0003] A traditional trolley case is usually composed of a shell, a telescopic handle, wheels, and safety devices such as zippers or buttons, which are used to protect the internal items from damage. The handle facilitates the user to drag or push the case, the wheels enable the case to roll easily on the ground, and the zipper or button is used to ensure that the items in the case will not fall or be lost during movement;

[0004] However, the wheel part of the traditional trolley case is usually relatively fixed. When it is damaged and needs to be replaced, it is not easy to disassemble, repair and replace. Only professional personnel can use professional tools to replace the wheels, and the process is relatively cumbersome, which limits the user's ability to handle the wheels by themselves. For this reason, a pressure-resistant trolley case is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a pressure-resistant trolley case, aiming to improve the problem that when the wheels are damaged and need to be replaced in the existing technology, only professional personnel can use professional tools to replace the wheels, and the process is relatively cumbersome, which limits the user's self-processing ability.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A pressure-resistant trolley case, including a first case body and a second case body. Fixed columns are fixedly connected inside both the first case body and the second case body. A threaded column is threadedly connected inside the fixed column. A knob is fixedly connected to the bottom end of the threaded column. A fixed seat is fixedly connected inside the fixed column. A spring piece is arranged at the bottom end of the fixed seat. A mounting pin is slidably connected inside the knob. The mounting pin is slidably connected inside the spring piece. A mounting seat is fixedly connected to the bottom end of the mounting pin. A moving wheel is rotatably connected to the bottom of the mounting seat. A connecting component is arranged on the outer wall of the first case body, and the connecting component is used to support the trolley case;

[0008] As a further description of the above technical solution:

[0009] The connecting component includes a fixing plate, one side of the fixing plate is fixedly connected to an outer wall of the first box body, and a supporting block is fixedly connected to an outer wall of the second box body;

[0010] As a further description of the above technical solution:

[0011] The fixing plate is in contact with the supporting block, and a fixing block is fixedly connected to one side of the supporting block;

[0012] As a further description of the above technical solution:

[0013] A clamping groove is formed inside the fixing block, and a connecting block is fixedly connected to one side of the fixing plate;

[0014] As a further description of the above technical solution:

[0015] A rotating block is rotatably connected inside the connecting block, and a rotating knob is fixedly connected to one side of the rotating block;

[0016] As a further description of the above technical solution:

[0017] A supporting ring is rotatably connected inside the rotating knob, and the supporting ring is slidably connected inside the clamping groove;

[0018] As a further description of the above technical solution:

[0019] A password lock is fixedly connected to an outer wall of the second box body;

[0020] As a further description of the above technical solution:

[0021] A telescopic rod is slidably connected inside the second box body, and a handle is fixedly connected to an outer wall of the second box body.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, by inserting the mounting pin into the elastic piece, the knob drives the threaded column to move, so as to extrude the elastic piece to fix the mounting pin, achieving the effect of facilitating the replacement of the wheel, and solving the problem that when the wheel is damaged and needs to be replaced, only professional personnel can use professional tools to replace the wheel, and the process is relatively cumbersome, thereby improving the flexibility of the luggage.

[0024] 2. In the utility model, with the cooperation of the fixing plate, the supporting block, the connecting block, the rotating block and the rotating knob structures, the supporting ring works, achieving the effect of providing additional support for the luggage, and solving the problem that when the luggage is closed for transportation, the box body lacks sufficient support and cannot withstand external pressure, and is prone to box body deformation or rupture, thereby improving the stability of the luggage. Description of the Drawings

[0025] Figure 1 A three-dimensional schematic diagram of a pressure-resistant suitcase proposed by the present utility model;

[0026] Figure 2 A schematic diagram of the bottom structure of the box body of a pressure-resistant suitcase proposed by the present utility model;

[0027] Figure 3 A schematic diagram of the cross-sectional structure of the fixing column of a pressure-resistant suitcase proposed by the present utility model;

[0028] Figure 4 A schematic diagram of the outer wall structure of the box body of a pressure-resistant suitcase proposed by the present utility model.

[0029] Legend:

[0030] 1. Box body one; 2. Box body two; 3. Fixing column; 4. Threaded column; 5. Knob; 6. Fixing seat; 7. Elastic piece; 8. Installation pin; 9. Installation seat; 10. Movable wheel; 11. Support block; 12. Fixed block; 13. Fixed plate; 14. Connecting block; 15. Rotating block; 16. Rotating knob; 17. Support ring; 18. Password lock; 19. Telescopic rod; 20. Handle. Specific implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Referring to Figures 1 - 3 , an embodiment provided by the present utility model: A pressure-resistant suitcase includes a box body one 1 and a box body two 2. Inside the box body one 1 and the box body two 2, there are fixedly connected fixing columns 3. Inside the fixing columns 3, there are threaded connections with threaded columns 4. The bottom end of the threaded column 4 is fixedly connected with a knob 5. Inside the fixing column 3, there is fixedly connected a fixing seat 6. At the bottom end of the fixing seat 6, there is an elastic piece 7. Inside the knob 5, there is a sliding connection with an installation pin 8. The installation pin 8 slides inside the elastic piece 7. The bottom end of the installation pin 8 is fixedly connected with an installation seat 9. The bottom of the installation seat 9 is rotatably connected with a movable wheel 10. On the outer wall of the box body one 1, there is a connecting component, and the connecting component is used to support the suitcase.

[0033] Specifically, when replacing the wheels of the suitcase, first insert the mounting pin 8 at the top of the mounting base 9 into the inside of the elastic piece 7. Then, start the rotation of the threaded column 4 inside the fixed column 3 by rotating the knob 5. The precise threaded connection between the threaded column 4 and the fixed column 3 ensures that the threaded column 4 moves inward and applies pressure to the elastic piece 7 inside the fixed column 3 during this process. This pressure forces the elastic piece 7 to contract, effectively clamping and fixing the mounting pin 8, making it easy to remove and replace the moving wheel 10, providing convenience for wheel maintenance.

[0034] Refer to Figure 1 and Figure 4 As shown in FIGS. and

[0034] , the connecting component includes a fixing plate 13. One side of the fixing plate 13 is fixedly connected to the outer wall of the first box body 1. A support block 11 is fixedly connected to the outer wall of the second box body 2. The fixing plate 13 is in contact with the support block 11. A fixing block 12 is fixedly connected to one side of the support block 11. A clamping groove is formed inside the fixing block 12. A connecting block 14 is fixedly connected to one side of the fixing plate 13. A rotating block 15 is rotatably connected inside the connecting block 14. A rotating knob 16 is fixedly connected to one side of the rotating block 15. A support ring 17 is rotatably connected inside the rotating knob 16. The support ring 17 is slidably connected inside the clamping groove. A password lock 18 is fixedly connected to the outer wall of the second box body 2. A telescopic rod 19 is slidably connected inside the second box body 2. A handle 20 is fixedly connected to the outer wall of the second box body 2.

[0035] Specifically, when closing the suitcase, the support ring 17 on the outer wall of the first box body 1 can be used to rotate the support ring 17 into the clamping groove inside the fixing block 12 on the outer wall of the second box body 2. Then, by rotating the rotating knob 16, the force is transmitted to the connected rotating block 15, causing it to rotate inside the connecting block 14. At the same time, the rotating knob 16 also drives the support ring 17 to move inside, securely fixing it in the clamping groove. Through the tight connection between the support ring 17 and the fixing block 12, additional support and reinforcement effects are provided for the suitcase, enhancing the pressure resistance and structural stability of the box body.

[0036] Working principle: When it is necessary to replace the wheels of the trolley case, first insert the mounting pin 8 at the top of the mounting base 9 into the inside of the elastic piece 7, and then rotate the knob 5 to drive the threaded column 4 to rotate inside the fixed column 3. Due to the threaded connection between the threaded column 4 and the fixed column 3, the threaded column 4 moves into the fixed column 3. During this process, the threaded column 4 contacts the elastic piece 7 inside the fixed column 3 and then squeezes it, causing the elastic piece 7 to contract, thereby clamping and fixing the mounting pin 8, achieving the effect that the moving wheel 10 is convenient to replace. When the trolley case is closed, the support ring 17 on the outer wall of the box body 1 can be rotated into the card slot inside the fixed block 12, and then rotate the rotating knob 16, which drives the rotating block 15 connected to one side to rotate inside the connecting block 14 under force. At the same time, the rotating knob 16 drives the support ring 17 connected inside to move, and then fixes the support ring 17 in the card slot. Through the connection between the support ring 17 and the fixed block 12, additional support is provided for the trolley case, achieving the effect of strengthening and pressure resistance for the trolley case.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure-resistant trolley case, comprising a first box body (1) and a second box body (2), characterized in that: Inside both the first box body (1) and the second box body (2), there is a fixed column (3) fixedly connected. A threaded column (4) is threadedly connected inside the fixed column (3). The bottom end of the threaded column (4) is fixedly connected to a knob (5). Inside the fixed column (3), there is a fixed seat (6) fixedly connected. A spring piece (7) is arranged at the bottom end of the fixed seat (6). An installation pin (8) is slidably connected inside the knob (5). The installation pin (8) is slidably connected inside the spring piece (7). The bottom end of the installation pin (8) is fixedly connected to an installation seat (9). A moving wheel (10) is rotatably connected to the bottom of the installation seat (9). A connecting component is arranged on the outer wall of the first box body (1), and the connecting component is used to support the trolley case.

2. The pressure-resistant trolley case according to claim 1, wherein: The connecting component includes a fixing plate (13). One side of the fixing plate (13) is fixedly connected to the outer wall of the first box body (1). A support block (11) is fixedly connected to the outer wall of the second box body (2).

3. The pressure-resistant trolley case according to claim 2, wherein: The fixing plate (13) is in contact with the support block (11). A fixing block (12) is fixedly connected to one side of the support block (11).

4. The pressure-resistant trolley case according to claim 3, wherein: A card slot is formed inside the fixing block (12). A connecting block (14) is fixedly connected to one side of the fixing plate (13).

5. The pressure-resistant trolley case according to claim 4, wherein: A rotating block (15) is rotatably connected inside the connecting block (14). A rotating knob (16) is fixedly connected to one side of the rotating block (15).

6. The pressure-resistant trolley case according to claim 5, wherein: A support ring (17) is rotatably connected inside the rotating knob (16). The support ring (17) is slidably connected inside the card slot.

7. The pressure-resistant trolley case according to claim 1, characterized in that: A password lock (18) is fixedly connected to the outer wall of the second box body (2).

8. The pressure-resistant trolley case according to claim 7, characterized in that: A telescopic rod (19) is slidably connected inside the second box body (2). A handle (20) is fixedly connected to the outer wall of the second box body (2).

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