Draw-bar box with adjustable storage space

Abstract

The utility model discloses a draw-bar box with an adjustable storage space, which comprises a main box body, a lifting unfolding mechanism, a locking mechanism and a draw bar telescoping mechanism, a protection bin is fixedly arranged on the outer side above the outer side of the main box body, a lifting box body is arranged in the protection bin in a sliding manner, handles are symmetrically and fixedly arranged on the two sides of the lifting box body, sliding chutes are symmetrically arranged on the two sides of the lifting box body, and the draw bar telescoping mechanism is arranged in the sliding chutes. A sliding block is fixedly arranged on the inner side of the upper end of the protection bin in a matched mode, an upper supporting block is fixedly arranged at the bottom of the lifting box, a lower supporting block is fixedly arranged on the top of the main box, a locking mechanism is arranged on the supporting blocks, and a pull rod telescopic mechanism is arranged on the rear side of the protection bin. The storage space of the draw-bar box is adjusted by lifting and sliding the lifting box body along the protection bin, gravity center distribution of the draw-bar box is prevented from being affected, the threaded holes are locked with the first bolts and the second bolts in a threaded fit mode when the lifting box body is unfolded and folded, and therefore the draw-bar box has a firm supporting structure when being unfolded. The problem that articles are easily damaged when the box body is extruded is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley cases, in particular to a trolley case with adjustable storage space. Background Art

[0002] A trolley case is a suitcase with a handle and wheels, which combines the storage function of a traditional suitcase with the portability of a modern design. This type of case is usually made of hard or soft materials, and has rollers at the bottom for easy dragging on the ground. The top or side of a trolley case is usually equipped with a retractable handle, which allows the user to easily pull the case forward. The emergence of trolley cases has greatly improved the convenience and comfort of travel, especially for those who need to carry a lot of luggage. Trolley cases can reduce the burden of shoulder and hand luggage, making the journey easier. When purchasing a trolley case, you generally need to purchase trolley cases of different capacities according to your needs, so you need a trolley case with adjustable storage space;

[0003] The utility model with application number 202021267688.7 discloses a suitcase with greatly adjustable space size. When the space of the suitcase needs to be adjusted, the top cap extending from the ejection hole on the main case body is pressed with two hands, and the top cap retreats from the ejection hole to the U-shaped groove, and the stretching frame is lifted upward. At this time, the top cap compresses the spring and slides along the inner wall of the U-shaped groove. When the next top cap reaches the ejection hole position, the top cap is squeezed under the action of the spring and ejected from the ejection hole to complete the fixation. The space size of the suitcase can be adjusted according to one's needs to meet the needs of travel. When the suitcase needs to be opened, the switch screw cap of the fastening device is turned, and the switch screw cap rotates to drive the switch threaded barrel to be pulled out along the semicircular threaded rod. When the semicircular sleeve bolt is completely withdrawn from the switch threaded barrel, the opening panel can be opened to complete the opening of the suitcase. Conversely, the suitcase can be closed in the same way. When the suitcase needs to be moved, the telescopic rod can be pulled out to push the suitcase horizontally. Under the action of thrust, the suitcase is moved by the rolling of the towing pulley. The suitcase can also be lifted by hand by moving the handle, and the suitcase can be directly driven to move by manpower, which can meet the travel needs in various situations.

[0004] However, after the above-mentioned trolley case with adjustable storage space is extended to one side by the stretching frame and unfolded, the center of gravity of the trolley case will change, affecting the normal movement of the case body. The above-mentioned trolley case with adjustable storage space is prone to damage to the top cap when the stretching frame is squeezed on the case body. The lack of a firm supporting and stable structure can easily cause damage to the trolley case and squeeze damage to the items in the trolley case. Therefore, the utility model proposes a trolley case with adjustable storage space to solve the problems existing in the prior art. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to provide a trolley case with adjustable storage space, which can adjust the storage space of the trolley case by lifting and sliding the lifting box body along the protective bin, so as to adjust the space without affecting the center of gravity distribution of the trolley case, thereby facilitating the normal movement of the trolley case, and the threaded holes can be locked with the first bolt and the second bolt threads respectively when the lifting box body is unfolded and folded, so that the trolley case also has a strong supporting structure when unfolded, thereby solving the problem that the items are easily damaged when the box body is squeezed.

[0006] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a trolley case with adjustable storage space, including a main box body, a lifting and unfolding mechanism, a locking mechanism and a trolley telescopic mechanism, the lifting and unfolding mechanism including a protection bin, a lifting box body, a handle, a slide groove, a slider, an upper support block and a lower support block, a protection bin is fixedly provided on the outer side above the outer side of the main box body, a lifting box body is slidably provided in the protection bin, handles are symmetrically fixed on both sides of the lifting box body, slide grooves are symmetrically opened on both sides of the lifting box body, a slider is matched and fixed on the inner side of the upper end of the protection bin, an upper support block is fixedly provided on the bottom of the lifting box body, a lower support block is fixedly provided on the top of the main box body, a locking mechanism is provided on the support block, and a trolley telescopic mechanism is provided on the rear side of the protection bin.

[0007] A further improvement is that the sliding block is embedded in the sliding groove for sliding cooperation, and the upper supporting block and the lower supporting block surround the periphery of the main box body and the lifting box body respectively.

[0008] Further improvements are: the locking mechanism includes a threaded hole, a first bolt and a second bolt, a threaded hole is opened on the upper support block, and four groups of threaded holes are arranged around it, a first bolt is inserted into the protective bin, and the first bolt is matched with the threaded hole, a second bolt is inserted into the bottom of the protective bin, and the second bolt passes through the lower support plate and matches the threaded hole.

[0009] A further improvement is that: in the unfolded state of the lifting box, the threaded hole cooperates with the first bolt thread, and in the folded state of the lifting box, the threaded hole cooperates with the second bolt thread.

[0010] Further improvements are: the pull rod telescopic mechanism includes a telescopic bin, a pull rod, a fixing hole, a spring and a clamping block; the telescopic bin is fixedly provided on the upper rear side of the protective bin; a pull rod is slidably provided inside the telescopic bin; fixing holes are symmetrically provided on the upper side of the telescopic bin; a spring is laterally fixed at the bottom of the pull rod; and a clamping block is fixedly provided on the outer side of the spring.

[0011] A further improvement is that: the fixing holes are provided with two groups, and correspond to the upper and lower positions of the clamping block.

[0012] A further improvement is that a box cover is hinged and rotatable on the top of the lifting box body, a zipper is matched between the box cover and the top edge of the lifting box body, and universal wheels are provided at the four corners of the bottom of the main box body.

[0013] The beneficial effects of the utility model are as follows: the utility model adjusts the storage space of the trolley case by lifting and sliding the lifting box body along the protective bin, and achieves the adjustment of the space without affecting the distribution of the center of gravity of the trolley case, which facilitates the normal movement of the trolley case. The threaded holes are respectively locked with the first bolt and the second bolt threads when the lifting box body is unfolded and folded, so that the trolley case also has a solid supporting structure when unfolded, which solves the problem that the items are easily damaged when the box body is squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the overall front cross-sectional view of the utility model;

[0015] Figure 2 It is an enlarged schematic diagram of point A of the utility model;

[0016] Figure 3 It is the overall front view of the utility model;

[0017] Figure 4 It is an overall side sectional view of the utility model;

[0018] Figure 5 It is an enlarged schematic diagram of point B of the present utility model.

[0019] Among them: 1. Main box body; 2. Protection compartment; 3. Lifting box body; 4. Handle; 5. Slide groove; 6. Slider; 7. Upper support block; 8. Lower support block; 9. Threaded hole; 10. First bolt; 11. Second bolt; 12. Telescopic compartment; 13. Pull rod; 14. Fixing hole; 15. Spring; 16. Block; 17. Box cover; 18. Zipper; 19. Universal wheel. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0021] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the present embodiment provides a trolley case with adjustable storage space, including a main case body 1, a lifting and unfolding mechanism, a locking mechanism and a trolley telescopic mechanism, the lifting and unfolding mechanism including a protection bin 2, a lifting box body 3, a handle 4, a slide 5, a slider 6, an upper support block 7 and a lower support block 8. A protection bin 2 is fixedly arranged on the outer side of the upper and outer sides of the main case body 1, a lifting box body 3 is slidably arranged in the protection bin 2, handles 4 are symmetrically fixedly arranged on both sides of the lifting box body 3, slide 5 is symmetrically opened on both sides of the lifting box body 3, sliders 6 are matched and fixedly arranged on the inner side of the upper end of the protection bin 2, an upper support block 7 is fixedly arranged on the bottom of the lifting box body 3, a lower support block 8 is fixedly arranged on the top of the main case body 1, a locking mechanism is arranged on the support block, and a trolley telescopic mechanism is arranged on the rear side of the protection bin 2. When it is necessary to expand the storage space, the lifting box body 3 is pulled up by the handle 4, the space between the main case body 1 and the lifting box body 3 is increased and expanded upward, so that the center of gravity of the trolley case remains unchanged, and the problem of changing the center of gravity of the trolley case after the stretching frame is unfolded to one side and affecting the normal movement of the case body is effectively avoided.

[0022] The slider 6 is embedded in the slide groove 5 and slides to keep the lifting box 3 stable when moving. The upper support block 7 and the lower support block 8 surround the main box 1 and the lifting box 3 respectively. When the lifting box 3 is in the folded state, the upper support block 7 presses on the lower support block 8 to keep it stable.

[0023] The locking mechanism includes a threaded hole 9, a first bolt 10 and a second bolt 11. The upper support block 7 is provided with a threaded hole 9, and four groups of threaded holes 9 are arranged around the upper support block 7. A first bolt 10 is inserted into the protection bin 2, and the first bolt 10 is matched with the threaded hole 9. A second bolt 11 is inserted into the bottom of the protection bin 2, and the second bolt 11 passes through the lower support plate and is matched with the threaded hole 9. In the unfolded state of the lifting box 3, the threaded hole 9 and the first bolt 10 are threadedly matched, and in the folded state of the lifting box 3, the threaded hole 9 and the second bolt 11 are threadedly matched. When the lifting box 3 is in the unfolded state, the upper support plate is located above the protection bin 2, and the first bolt 10 passes through the protection bin 2 and is screwed into the threaded hole 9 to lock the lifting box 3. When the lifting box 3 is in the folded state, the second bolt 11 passes through the protection bin 2 and is screwed into the threaded hole 9 to lock the lifting box 3, which improves the stability of the box after it is unfolded, and solves the problem that the lack of a firm and stable structure when the box is squeezed easily causes damage to the items in the trolley case.

[0024] The pull rod telescopic mechanism includes a telescopic bin 12, a pull rod 13, a fixing hole 14, a spring 15 and a clamping block 16. The telescopic bin 12 is fixedly provided on the upper rear side of the protection bin 2, a pull rod 13 is slidably provided in the telescopic bin 12, and fixing holes 14 are symmetrically provided on the upper side of the telescopic bin 12. A spring 15 is laterally fixedly provided at the bottom of the pull rod 13, and a clamping block 16 is fixedly provided on the outer side of the spring 15. There are two groups of fixing holes 14, which correspond to the upper and lower positions of the clamping block 16. When the pull rod case needs to be moved, the pull rod 13 is pulled out of the telescopic bin 12. When the clamping block 16 is pulled out to the position of the fixing hole 14 along with the pull rod 13, the clamping block 16 is clamped into the fixing hole 14 under the elastic force of the spring 15 for fixation.

[0025] A box cover 17 is hingedly provided on the top of the lifting box body 3. A zipper 18 is provided on the top edge of the box cover 17 and the top edge of the lifting box body 3. When taking or placing items, the zipper 18 can be unzipped to open the box cover 17 from the top of the lifting box body 3. Universal wheels 19 are provided at the four corners of the bottom of the main box body 1 for easy movement.

[0026] When the trolley case with adjustable storage space is in a folded state, the lifting case body contacts the main case body, and the second bolt is inserted into the protective bin from below and threaded into the threaded hole to lock the upper support block. When the storage space needs to be adjusted, the second bolt is unscrewed to release the lock and the lifting case body is lifted by the handle. After the lifting case body is unfolded, the upper support block moves with the lifting case body to the upper part of the protective bin, and the first bolt is inserted into the protective bin from above and threaded into the hole to lock the lifting case body. When the trolley case needs to be moved, the pull rod is pulled out of the telescopic bin, and when the pull rod drives the card block to move to the corresponding position of the fixing hole, the spring elasticity is used to push the card block into the fixing hole to fix the pull rod, which is convenient for pulling the trolley case to move. The universal wheel facilitates the fast and stable movement of the trolley case, and when it is necessary to take or put items, the zipper is unzipped and the case lid is opened.

[0027] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A suitcase with adjustable storage space, characterized in that: The utility model comprises a main box body (1), a lifting and unfolding mechanism, a locking mechanism and a pull rod (13) telescopic mechanism, wherein the lifting and unfolding mechanism comprises a protection bin (2), a lifting box body (3), a handle (4), a slide groove (5), a slider (6), an upper support block (7) and a lower support block (8), wherein a protection bin (2) is fixedly provided on the outer side above the outer side of the main box body (1), a lifting box body (3) is slidably provided inside the protection bin (2), handles (4) are symmetrically fixedly provided on both sides of the lifting box body (3), slide grooves (5) are symmetrically provided on both sides of the lifting box body (3), a slider (6) is matched and fixedly provided on the inner side of the upper end of the protection bin (2), an upper support block (7) is fixedly provided on the bottom of the lifting box body (3), a lower support block (8) is fixedly provided on the top of the main box body (1), a locking mechanism is provided on the support block, and a pull rod telescopic mechanism is provided on the rear side of the protection bin (2).

2. The trolley case with adjustable storage space according to claim 1, characterized in that: The sliding block (6) is inserted into the sliding groove (5) for sliding engagement, and the upper supporting block (7) and the lower supporting block (8) respectively surround the periphery of the main box body (1) and the lifting box body (3).

3. The suitcase with adjustable storage space according to claim 1, characterized in that: The locking mechanism comprises a threaded hole (9), a first bolt (10) and a second bolt (11); the upper support block (7) is provided with a threaded hole (9); four groups of threaded holes (9) are arranged around the upper support block; a first bolt (10) is inserted into the protection bin (2); the first bolt (10) matches the threaded hole (9); a second bolt (11) is inserted into the bottom of the protection bin (2); the second bolt (11) passes through the lower support plate and matches the threaded hole (9).

4. The trolley case with adjustable storage space according to claim 3, characterized in that: When the lifting box (3) is in an unfolded state, the threaded hole (9) and the first bolt (10) are threadedly matched, and when the lifting box (3) is in a folded state, the threaded hole (9) and the second bolt (11) are threadedly matched.

5. The suitcase with adjustable storage space according to claim 1, characterized in that: The pull rod telescopic mechanism comprises a telescopic bin (12), a pull rod (13), a fixing hole (14), a spring (15) and a clamping block (16); the telescopic bin (12) is fixedly provided on the upper rear side of the protection bin (2); a pull rod (13) is slidably provided inside the telescopic bin (12); fixing holes (14) are symmetrically provided on the upper side of the telescopic bin (12); a spring (15) is transversely fixedly provided on the bottom of the pull rod (13); and a clamping block (16) is fixedly provided on the outer side of the spring (15).

6. The trolley case with adjustable storage space according to claim 5, characterized in that: The fixing holes (14) are provided in two groups and correspond to the upper and lower positions of the clamping blocks (16).

7. The suitcase with adjustable storage space according to claim 1, characterized in that: A box cover (17) is hingedly rotatably provided above the lifting box body (3), and a zipper (18) is matched with the top edge of the box cover (17) and the lifting box body (3), and universal wheels (19) are provided at the four corners of the bottom of the main box body (1).

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