Telescopic nested structure luggage case

Abstract

The invention belongs to the technical field of luggage cases, and discloses a telescopic nested structure luggage case which comprises a main case body, an auxiliary case body arranged in the main case body, clamping pipes fixedly mounted on the two sides of the front side of the auxiliary case body, and pull rods mounted in the clamping pipes, and further comprises a telescopic positioning piece arranged in the main case body, the positioning device is used for positioning the expanded auxiliary box body. The sliding rail is matched with the limiting sliding groove and the arc-shaped sliding strip, smooth telescopic adjustment of the auxiliary box body in the main box body is achieved, an L-shaped locking plate is pressed to compress a reset elastic piece, limiting of the reset elastic piece to a U-shaped positioning block is relieved, then the auxiliary box body can be pulled to be expanded through a pull rod and a clamping pipe, in the moving process of the auxiliary box body, the U-shaped positioning block compresses an oval elastic piece, and therefore the auxiliary box body can be expanded. After expansion is in place, the L-shaped locking plate is loosened, the elliptical elastic piece pushes the U-shaped positioning block to be clamped into the positioning groove again to complete locking, one-key unlocking, automatic clamping and accurate telescopic guiding are achieved, and the problems that the box body shakes and gets loose after expansion are effectively eradicated.

Description

Technical Field

[0001] This invention belongs to the field of luggage technology, specifically a telescopic nested structure luggage. Background Technology

[0002] Suitcases are an indispensable tool for people's daily travel, business trips, and long-distance travel. They are widely used in various travel scenarios. With the diversification of travel needs, users have put forward higher requirements for the suitcase's capacity adaptability, storage convenience, and space utilization.

[0003] Most conventional suitcases currently available adopt a one-piece fixed-volume structure, with no adjustable internal storage space, resulting in significant limitations in use. In short business trips where only a few clothes, electronic devices, and other personal items are needed, the large fixed-capacity suitcase is too bulky and cannot meet carry-on size standards, making it inconvenient to carry. In long-distance travel or shopping trips where a lot of storage is required, the small fixed-volume suitcase cannot meet the loading needs, making it extremely unsuitable. At the same time, when not in use, one-piece fixed-structure suitcases take up a lot of home and storage space, resulting in low space utilization. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a telescopic nested structure suitcase, including a main body, a secondary body disposed inside the main body, and engaging tubes fixedly installed on both sides of the front side of the secondary body, with a pull rod installed inside the engaging tubes, and further comprising: Telescopic positioning components are installed inside the main housing and are used to position the expanded secondary housing. The telescopic positioning component includes a fixed plate fixedly installed on the front side of the inner wall of the main housing. The surface of the engaging tube is provided with a positioning groove. U-shaped positioning blocks are provided on both sides inside the fixed plate. The side of the U-shaped positioning block near the engaging tube extends into the positioning groove. Elliptical spring pieces are fixedly installed on the front and rear sides of the side of the U-shaped positioning block away from the positioning groove. The side of the elliptical spring piece away from the U-shaped positioning block is fixedly installed on the inner wall of the fixed plate. An L-shaped locking plate is slidably connected inside the fixed plate. The L-shaped locking plate slides vertically inside the fixed plate, abutting or disengaging from the U-shaped positioning block. When abutting, it forms a hard lock that restricts the movement of the U-shaped positioning block. When disengaging, the elliptical spring piece provides a soft lock that allows the U-shaped positioning block to move elastically.

[0005] In the above technical solution, preferably, it also includes an object storage component, which is set on the front side of the main box for quick storage of items. The object storage component includes a frame hinged to the front side of the main box via a connecting block and a pivot pin. A transparent partition is fixedly installed on the front side of the frame, and a folding storage curtain is fixedly installed on the rear side of the frame. The rear side of the folding storage curtain is fixedly installed on the front side of the main box. A movable plate is fixedly connected to the front side of the L-shaped locking plate, and a locking block is fixedly connected to the top of the movable plate. A locking groove is opened on the top of the inner wall of the frame, and the locking block is located inside the locking groove.

[0006] In the above technical solution, preferably, it also includes a clothing fastener, which is disposed on the rear side of the main box for quick fastening of clothing. The clothing fastener includes a rotating button fixedly installed on the rear side of the main box. A guide post is fixedly connected to the rear side of the main box. A fixing strap is provided inside the guide post. The top of the fixing strap is fixedly installed inside the rotating button.

[0007] In the above technical solution, preferably, a limiting groove is provided on the rear side of the fixing plate, and a slide rail is slidably connected inside the limiting groove. The rear side of the slide rail is fixedly installed on the front side of the sub-box. Arc-shaped slide bars are fixedly installed on both the front and rear sides of the right side of the sub-box, and the surface of the arc-shaped slide bars is slidably connected to the inside of the main box.

[0008] In the above technical solution, preferably, the surface of the L-shaped locking plate is in contact with the surface of the U-shaped positioning block, the front side of the L-shaped locking plate extends to the front side of the main housing, and a reset spring is fixedly installed at the bottom of the L-shaped locking plate, with the bottom of the reset spring fixedly installed at the bottom of the inner wall of the fixing plate.

[0009] In the above technical solution, preferably, a connecting strap is fixedly installed on the rear side of the main housing, and the top of the connecting strap is fixedly installed on the surface of the auxiliary housing.

[0010] In the above technical solution, preferably, it further includes an inflatable sealing component disposed at the top of the inner cavity of the main housing. The inflatable sealing component includes a sealing airbag installed at the top of the inner cavity of the main housing. The inner wall of the sealing airbag is in contact with the surface of the auxiliary housing. An air cylinder is fixedly installed at the bottom of the inner cavity of the locking tube. A return spring is sleeved on the surface of the air cylinder. The output end of the air cylinder is connected to an elastic air tube. The top of the elastic air tube is connected to the sealing airbag.

[0011] In the above technical solution, preferably, a synchronous push plate is fixedly installed on the surface of the moving plate, and a rubber damping strip is fixedly installed on the front side of the main housing, with the rubber damping strip located at the bottom of the synchronous push plate.

[0012] In the above technical solution, preferably, a push-pull movable block is fixedly installed on the top of the front side of the frame, the push-pull movable block is located on the top of the transparent partition, and a dustproof gasket is fixedly installed on the rear side of the movable plate, the rear side of the dustproof gasket is in contact with the front side of the main body.

[0013] In the above technical solution, preferably, a pull plate is sleeved on the surface of the fixing strap, and the pull plate is located at the bottom of the rotating button.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes a sliding rail, a limiting groove, and an arc-shaped sliding strip to achieve smooth telescopic adjustment of the secondary housing within the main housing. Pressing the L-shaped locking plate compresses the reset spring, releasing its restriction on the U-shaped positioning block. The secondary housing can then be extended by pulling the lever and engaging tube. During the movement of the secondary housing, the U-shaped positioning block compresses the elliptical spring. After extension into position, the L-shaped locking plate is released, and the elliptical spring pushes the U-shaped positioning block back into the positioning groove to complete the locking. This achieves one-button unlocking, automatic locking, precise telescopic guidance, and effectively prevents the housing from shaking or loosening after extension.

[0015] Furthermore, pushing the movable plate can cause the L-shaped locking plate to move synchronously, causing the locking block to disengage from the slot and release the lock on the frame. Then, the frame can be flipped around the pivot pin to open the storage space. After storing small items, flipping the frame in the opposite direction releases the movable plate. The reset spring moves the L-shaped locking plate and the movable plate back to their original positions, and the locking block engages with the slot to complete the locking. The folding storage curtain extends and retracts synchronously with the frame flipping, enabling quick storage and retrieval of small items and improving the suitcase user experience.

[0016] Furthermore, rotating the button allows you to tighten or loosen the internal securing straps. During the movement of the securing straps, the guide post acts as a limit and guide to prevent the straps from tangling or shifting. After placing the clothes inside the securing straps, stretch the straps to make them fit the surface of the clothes, and then rotate the button in the opposite direction to tighten the straps, thus securing the clothes. The tightness of the straps can be flexibly adjusted according to the amount of clothes, effectively preventing clothes from shaking or wrinkling during long trips. It adapts to the storage needs of different sizes of clothes, improving the practicality and convenience of the suitcase. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the garment fastener of the present invention; Figure 3 This is a schematic diagram of the structure of the L-shaped locking plate of the present invention; Figure 4 This is a schematic diagram of the limiting slide groove of the present invention; Figure 5 This is a schematic diagram of the structure of the movable plate of the present invention; Figure 6 This is a schematic diagram of the framework of the present invention; Figure 7 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 8 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the clamping tube of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point C.

[0018] In the diagram: 1. Main box; 2. Sub-box; 3. Clamping tube; 4. Telescopic positioning component; 41. Fixing plate; 42. Limiting slide groove; 43. Slide rail; 44. Arc-shaped slide bar; 45. Positioning groove; 46. U-shaped positioning block; 47. Elliptical spring; 48. L-shaped locking plate; 49. Reset spring; 5. Item storage component; 51. Frame; 52. Transparent partition; 53. Folding storage curtain; 54. Moving plate; 55. Clamping block; 56. Clamping groove; 6. Clothing fastener; 61. Rotating button; 62. Guide post; 63. Fixing strap; 7. Connecting strap; 8. Inflatable sealing component; 81. Sealing airbag; 82. Air cylinder; 83. Return spring; 84. Elastic air tube; 9. Synchronous push plate; 10. Push-pull moving block; 11. Pull plate; 12. Dustproof gasket; 13. Rubber damping strip; 14. Pull rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 3 As shown, the present invention provides a telescopic nested structure suitcase, including a main body 1, a secondary body 2 disposed inside the main body 1, and locking tubes 3 fixedly installed on both sides of the front side of the secondary body 2. A pull rod 14 is installed inside the locking tubes 3. The suitcase also includes: Telescopic positioning component 4 is installed inside the main housing 1 and is used to position the expanded secondary housing 2. The telescopic positioning component 4 includes a fixed plate 41 fixedly installed on the front side of the inner wall of the main housing 1. A positioning groove 45 is opened on the surface of the engaging tube 3. U-shaped positioning blocks 46 are provided on both sides inside the fixed plate 41. The side of the U-shaped positioning block 46 near the engaging tube 3 extends into the interior of the positioning groove 45. Elliptical spring pieces 47 are fixedly installed on the front and rear sides of the side of the U-shaped positioning block 46 away from the positioning groove 45. The side of the elliptical spring piece 47 away from the U-shaped positioning block 46 is fixedly installed on the inner wall of the fixed plate 41. An L-shaped locking plate 48 is slidably connected inside the fixed plate 41. The L-shaped locking plate 48 slides vertically inside the fixed plate 41, abutting or disengaging from the U-shaped positioning block 46. When abutting, a hard lock is formed to restrict the movement of the U-shaped positioning block 46. When disengaging, the elliptical spring piece 47 provides a soft lock that allows the U-shaped positioning block 46 to move elastically.

[0021] A limiting groove 42 is provided on the rear side of the fixed plate 41. A slide rail 43 is slidably connected inside the limiting groove 42. The rear side of the slide rail 43 is fixedly installed on the front side of the auxiliary housing 2. Arc-shaped slide bars 44 are fixedly installed on both the front and rear sides of the right side of the auxiliary housing 2. The surface of the arc-shaped slide bars 44 is slidably connected to the inside of the main housing 1. The surface of the L-shaped locking plate 48 contacts the surface of the U-shaped positioning block 46. The front side of the L-shaped locking plate 48 extends to the front side of the main housing 1. A reset spring 49 is fixedly installed at the bottom of the L-shaped locking plate 48. The bottom of the reset spring 49 is fixedly installed at the bottom of the inner wall of the fixed plate 41. Specifically, the fixing plate 41 is a commercially available fixed mounting plate and is the core mounting base of the telescopic positioning component 4; the limiting slide groove 42 and the slide rail 43 are standard linear sliding guide pairs, which are responsible for guiding the telescopic movement of the sub-box 2; the arc-shaped slide bar 44 is an arc-shaped sliding guide accessory, which assists the sub-box 2 to slide smoothly without jamming; the U-shaped positioning block 46 is an elastic locking block, which cooperates with the positioning groove 45 to lock the position of the sub-box 2; the elliptical spring 47 and the reset spring 49 are both standard industrial stamped elastic springs, which provide locking reset and unlocking reset elastic forces respectively; the L-shaped locking plate 48 is a press-type limiting lock plate to realize unlocking control; the locking tube 3 is a tubular locking connector, which has the dual functions of traction of the sub-box 2 and positioning cooperation.

[0022] like Figures 1 to 5 As shown, it also includes an object storage component 5, which is set on the front side of the main box 1 for quick storage of items. The object storage component 5 includes a frame 51 hinged to the front side of the main box 1 by a connecting block and a pivot pin. A transparent partition window 52 is fixedly installed on the front side of the frame 51, and a folding storage curtain 53 is fixedly installed on the rear side of the frame 51. The rear side of the folding storage curtain 53 is fixedly installed on the front side of the main box 1. A movable plate 54 is fixedly connected to the front side of the L-shaped locking plate 48. A locking block 55 is fixedly connected to the top of the movable plate 54. A slot 56 is opened on the top of the inner wall of the frame 51, and the locking block 55 is located inside the slot 56.

[0023] Specifically, the connecting block and the pivot pin are both commercially available hinged accessories, working together to enable the frame 51 to flip open and close, providing stable hinged support for the frame 51; the frame 51 is a standard storage frame attached to a standard case, serving as the mounting carrier for the transparent partition 52 and the folding storage curtain 53, forming the storage space; the transparent partition 52 is a commercially available transparent observation window, used to directly view the items inside the stored items, allowing for confirmation of the items' condition without opening it; the folding storage curtain 53 is a retractable folding storage curtain, commonly found in bag and luggage accessory storage structures, used to support small items and prevent them from falling; the moving plate 54 is a linkage operation plate, used to drive the L-shaped locking plate 48 and the locking block 55 to move synchronously; the locking block 55 and the locking slot 56 are standard locking mating parts, used to lock the position of the frame 51; the L-shaped locking plate 48 is a press-type limit lock plate, linked with the moving plate 54, to realize the unlocking and locking control of the stored items.

[0024] like Figure 2 As shown, it also includes a clothing fastener 6, which is located on the rear side of the main box 1 for quick clothing fastening. The clothing fastener 6 includes a rotating button 61 fixedly installed on the rear side of the main box 1. A guide post 62 is fixedly connected to the rear side of the main box 1. A fixing strap 63 is provided inside the guide post 62. The top of the fixing strap 63 is fixedly installed inside the rotating button 61.

[0025] Specifically, the rotating button 61 is a common adjustable rotating button for clothing straps, whose core function is to retract and extend the fixed strap 63 and adjust the tightness of the strap. It is the control core of the clothing fastener 6. The guide post 62 is a common tubular guide accessory used to limit and guide the fixed strap 63 to prevent the strap from getting tangled or shifting when retracting or extending. The fixed strap 63 is a common bag-specific fixed strap 63 used to directly attach to the clothing and fix it inside the main body 1 to prevent the clothing from shaking.

[0026] like Figure 2 and Figure 5 As shown, a connecting strap 7 is fixedly installed on the rear side of the main housing 1. The top of the connecting strap 7 is fixedly installed on the surface of the auxiliary housing 2. A pull plate 11 is sleeved on the surface of the fixing strap 63. The pull plate 11 is located at the bottom of the rotating button 61. A dustproof gasket 12 is fixedly installed on the rear side of the moving plate 54. The rear side of the dustproof gasket 12 is in contact with the front side of the main housing 1.

[0027] Specifically, the connecting strap is a common bag-specific connecting strap 7 used to connect the main body 1 and the secondary body 2, limiting the extension range of the secondary body 2 and preventing it from detaching from the main body 1, thus ensuring the stability of the telescopic structure; the pull plate 11 is a standard strap-matching pull plate 11 used on the market, fitted onto the surface of the fixing strap 63 as a force-bearing point, making it convenient for users to pull the fixing strap 63 and reducing the difficulty of operation; the fixing strap 63 is a common bag-specific fixing strap 63 used to secure clothing on the surface of the main body 1, preventing the clothing from shaking; the rotating button 61 is a common strap adjustment rotating button used to tighten and loosen the fixing strap 63 and adjust its tightness; the dustproof gasket 12 is a standard dustproof sealing gasket used to seal the gap between the rear side of the moving plate 54 and the front side of the main body 1, preventing dust from entering the interior of the main body 1 and achieving dust protection.

[0028] like Figure 9 and Figure 10 As shown, an inflatable sealing element 8 is fixedly installed on the top of the inner cavity of the main housing 1. The inflatable sealing element 8 includes a sealing airbag 81 installed on the top of the inner cavity of the main housing 1. The inner wall of the sealing airbag 81 is in contact with the surface of the auxiliary housing 2. An air cylinder 82 is fixedly installed on the bottom of the inner cavity of the locking tube 3. A return spring 83 is sleeved on the surface of the air cylinder 82. The output end of the air cylinder 82 is connected to an elastic air tube 84. The top of the elastic air tube 84 is connected to the sealing airbag 81. A vent valve is provided on the top of the sealing airbag 81 for manually releasing gas.

[0029] Specifically, the main housing 1 and the auxiliary housing 2 are a telescopic nested structure, creating a gap after expansion. The sealing airbag 81 inflates and can adaptively fit the surface of the auxiliary housing 2 according to its actual extension position, achieving a dynamic seal, effectively filling the gap, and preventing water and dust ingress. At the same time, the inflated airbag applies radial pressure to the auxiliary housing 2, generating static friction, eliminating radial sway and resisting accidental axial movement, forming a double lock with the telescopic positioning component 4, and improving structural stability. The air pump 82 is a miniature air pump, the return spring 83 is an industrial general-purpose return spring, and the elastic air tube 84 is a flexible pneumatic connection hose. The air cylinder 82 has an air inlet, an inner cover with a one-way valve, and a one-way outlet valve, allowing gas to flow only through the elastic air tube 84 to the sealed air bladder 81. There is an air inlet gap between the pull rod 14 and the inner wall of the locking tube 3. Outside air enters the inner cavity of the locking tube 3 through this gap and reaches the air inlet. When the pull rod 14 returns to its original position, the return spring 83 pushes the air cylinder 82 back, and the negative pressure inside the cylinder draws air in through the air inlet. When the pull rod 14 is pressed down, the one-way valve closes the air inlet, and the gas is forced into the sealed air bladder 81 through the one-way outlet valve and the elastic air tube 84, realizing reciprocating inflation.

[0030] Moreover, users do not need to operate it deliberately; inflation can be completed during normal use of the lever 14, achieving seamless operation. After inflation and sealing, the suitcase has multiple protective capabilities such as dustproof, waterproof, and soundproof, enhancing the user experience and product quality.

[0031] like Figures 1 to 5 As shown, a synchronous push plate 9 is fixedly installed on the surface of the movable plate 54, a push-pull movable block 10 is fixedly installed on the top of the front side of the frame 51, the push-pull movable block 10 is located on the top of the transparent partition window 52, ​​and a rubber damping strip 13 is fixedly installed on the front side of the main box 1, the rubber damping strip 13 is located at the bottom of the synchronous push plate 9.

[0032] Specifically, the synchronous push plate 9 is a standard linkage push plate on the market, fixed on the surface of the moving plate 54 as a force-bearing point, making it convenient for users to push the moving plate 54 to achieve synchronous linkage operation, improving the labor-saving and stability of operation; the push-pull moving block 10 is fixed on the top front side of the frame 51 and above the transparent partition 52, used to drive the frame 51 to flip, and conveniently control the opening and closing of the object storage component 5; the rubber damping strip 13 is a common rubber damping accessory on the market, fixed on the front side of the main box 1 and the bottom of the synchronous push plate 9, which plays a role in buffering shock absorption and anti-collision.

[0033] The working principle and usage process of this invention are as follows: During use, press the synchronous push plate 9 to the bottom of the rubber damping strip 13, causing the L-shaped locking plate 48 to compress the reset spring 49, moving the L-shaped locking plate 48 below the U-shaped positioning block 46 and releasing the hard lock on the U-shaped positioning block 46. At this time, the elliptical spring 47 can still provide a soft lock. The volume of the secondary housing 2 can be smoothly adjusted by using the slide rail 43, the limiting slide groove 42, and the arc-shaped slide bar 44. After adjustment, the elliptical spring 47 pushes the U-shaped positioning block 46 into the positioning groove 45 of the locking tube 3, completing the automatic locking through soft locking. After releasing the synchronous push plate 9, the L-shaped locking plate 48 resets, re-forming a hard lock, and the secondary housing 2 is completely fixed. After fixing, the unlocking lever 14 is unlocked and... Pressing up and down repeatedly compresses the air cylinder 82 at the bottom of the lever 14. Then, operating the lever 14 to return to its original position causes the return spring 83 to push the air cylinder 82 back. This reciprocating motion generates compressed air in the air cylinder 82, which is then transported to the sealing airbag 81 via the elastic air tube 84. The sealing airbag 81 expands and fits against the secondary housing 2 to complete the gap seal. The return spring 83 ensures that the air cylinder 82 automatically resets. When it is necessary to deflate the sealing airbag 81, simply open the deflation valve on its top. When storing small items, gently push the synchronous push plate 9 to disengage the locking block 55 from the locking slot 56. This only releases the lock of the storage item 5 without affecting the hard lock of the secondary housing 2. Flipping the frame 51 opens the folding storage curtain 53 for quick storage and retrieval of items. After resetting the frame 51, it automatically locks. When securing clothing, rotate the rotating button 61 to loosen or release the securing strap 63. The guide post 62 limits and prevents tangling. After stretching the strap to fit the clothing, tighten the button in the opposite direction to secure the clothing. The capacity of the case can be flexibly adjusted as needed, taking into account both short-distance portability and long-distance large-capacity storage.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A telescopic nested structure suitcase, comprising a main body (1), wherein a secondary body (2) is disposed inside the main body (1), and engaging tubes (3) are fixedly installed on both sides of the front side of the secondary body (2), and a pull rod (14) is installed inside the engaging tubes (3), characterized in that, Also includes: Telescopic positioning component (4) is installed inside the main housing (1) and is used to position the expanded secondary housing (2); The telescopic positioning component (4) includes a fixed plate (41) fixedly installed on the front side of the inner wall of the main housing (1). A positioning groove (45) is provided on the surface of the engaging tube (3). U-shaped positioning blocks (46) are provided on both sides inside the fixed plate (41). The side of the U-shaped positioning block (46) closest to the engaging tube (3) extends into the positioning groove (45). Elliptical spring pieces (47) are fixedly installed on the front and rear sides of the side of the U-shaped positioning block (46) away from the positioning groove (45). The elliptical spring (47) is fixedly installed on the inner wall of the fixing plate (41) on the side away from the U-shaped positioning block (46). An L-shaped locking plate (48) is slidably connected inside the fixing plate (41). The L-shaped locking plate (48) slides vertically inside the fixing plate (41) and abuts against or disengages from the U-shaped positioning block (46). When abutting, it forms a hard lock that restricts the movement of the U-shaped positioning block (46). When disengaging, the elliptical spring (47) provides a soft lock that allows the U-shaped positioning block (46) to move elastically.

2. The telescopic nested structure suitcase according to claim 1, characterized in that: It also includes an object storage component (5), which is set on the front side of the main box (1) for quick storage of items. The object storage component (5) includes a frame (51) hinged to the front side of the main box (1) by a connecting block and a pivot pin. A transparent partition window (52) is fixedly installed on the front side of the frame (51). A folding storage curtain (53) is fixedly installed on the rear side of the frame (51). The rear side of the folding storage curtain (53) is fixedly installed on the front side of the main box (1). A movable plate (54) is fixedly connected to the front side of the L-shaped locking plate (48). A locking block (55) is fixedly connected to the top of the movable plate (54). A slot (56) is opened on the top of the inner wall of the frame (51). The locking block (55) is located inside the slot (56).

3. A telescopic nested structure suitcase according to claim 1, characterized in that: It also includes a clothing fastener (6), which is located on the rear side of the main box (1) for quick fastening of clothing. The clothing fastener (6) includes a rotating button (61) fixedly installed on the rear side of the main box (1). A guide post (62) is fixedly connected to the rear side of the main box (1). A fixing strap (63) is provided inside the guide post (62). The top of the fixing strap (63) is fixedly installed inside the rotating button (61).

4. A telescopic nested structure suitcase according to claim 1, characterized in that: The fixed plate (41) has a limiting groove (42) on its rear side. The limiting groove (42) is slidably connected to a slide rail (43). The rear side of the slide rail (43) is fixedly installed on the front side of the sub-box (2). The front and rear sides of the right side of the sub-box (2) are both fixedly installed with arc-shaped slide bars (44). The surface of the arc-shaped slide bars (44) is slidably connected to the interior of the main box (1).

5. A telescopic nested structure suitcase according to claim 1, characterized in that: The surface of the L-shaped locking plate (48) is in contact with the surface of the U-shaped positioning block (46). The front side of the L-shaped locking plate (48) extends to the front side of the main housing (1). A reset spring (49) is fixedly installed at the bottom of the L-shaped locking plate (48). The bottom of the reset spring (49) is fixedly installed at the bottom of the inner wall of the fixing plate (41).

6. A telescopic nested structure suitcase according to claim 1, characterized in that: A connecting strap (7) is fixedly installed on the rear side of the main housing (1), and the top of the connecting strap (7) is fixedly installed on the surface of the auxiliary housing (2).

7. A telescopic nested structure suitcase according to claim 1, characterized in that: It also includes an inflatable sealing element (8) disposed at the top of the inner cavity of the main housing (1). The inflatable sealing element (8) includes a sealing airbag (81) installed at the top of the inner cavity of the main housing (1). The inner wall of the sealing airbag (81) is in contact with the surface of the auxiliary housing (2). An air cylinder (82) is fixedly installed at the bottom of the inner cavity of the locking tube (3). A return spring (83) is sleeved on the surface of the air cylinder (82). The output end of the air cylinder (82) is connected to an elastic air tube (84). The top of the elastic air tube (84) is connected to the sealing airbag (81).

8. A telescopic nested structure suitcase according to claim 2, characterized in that: A synchronous push plate (9) is fixedly installed on the surface of the moving plate (54), and a rubber damping strip (13) is fixedly installed on the front side of the main box (1). The rubber damping strip (13) is located at the bottom of the synchronous push plate (9).

9. A telescopic nested structure suitcase according to claim 2, characterized in that: A push-pull moving block (10) is fixedly installed on the top of the front side of the frame (51). The push-pull moving block (10) is located on the top of the transparent partition window (52). A dustproof gasket (12) is fixedly installed on the rear side of the moving plate (54). The rear side of the dustproof gasket (12) is in contact with the front side of the main box (1).

10. A telescopic nested structure suitcase according to claim 6, characterized in that: The surface of the fixing strap (63) is fitted with a pull plate (11), which is located at the bottom of the rotating button (61).

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