Expansion luggage case

Abstract

A capacity expansion luggage case comprises a main body and a pull rod arranged on the main body, the main body comprises an upper case body, a lower case body and a capacity expansion part arranged between the upper case body and the lower case body, and the capacity expansion part comprises a shell, a sliding groove formed in the shell, a sliding block in sliding fit with the sliding groove and a locking device for locking the sliding block. The upper portion of the shell is fixedly connected with the upper box body, and the lower portion of the shell is movably connected with the lower box body through a sliding block. According to the use principle, a user adjusts the locking device to enable the sliding groove to move relative to the sliding block, lifts the upper box body to slide along the sliding groove, the shell is slowly exposed to achieve the capacity expansion function, and after the locking device is adjusted to a proper position, the locking device is adjusted to enable the sliding groove not to move relative to the sliding block, and then the capacity expansion part is fixed.

Description

Technical Field

[0001] The utility model relates to the field of suitcases, in particular to an expandable suitcase. Background Art

[0002] A suitcase is an essential item for people to place items when they are away from home. The structure of the common suitcases on the market at present is basically unchangeable, and the internal space is limited and cannot be expanded. When large items or a large number of items need to be placed, they often cannot be put in, causing many inconveniences. Therefore, there is room for improvement.

[0003] The utility model patent with the authorization number CN215936515U discloses a telescopic folding multi-functional suitcase, including: a lower box body, the lower box body defines a first accommodation cavity with an open upper side, and rollers are provided at the bottom of the lower box body; a support rod, the support rod is connected to the lower box body, and the support rod can be telescoped in the up and down directions; an upper box body, the upper box body is connected to the support rod, the upper box body is located above the lower box body, and the upper box body defines a second accommodation cavity with an open lower side; a tray, the tray is located between the lower box body and the upper box body, the tray is installed on the support rod, and the support rod can be telescoped so that the tray neither covers the first accommodation cavity nor covers the second accommodation cavity, or the tray can cover at least one of the first accommodation cavity and the second accommodation cavity. When the support rod extends, the first accommodation cavity and the second accommodation cavity are exposed, increasing the risk of item loss. At the same time, since the support rod is fixed by the cooperation of a spring buckle and a limiting groove and cannot be telescoped, the user needs to align the spring buckle with the limiting groove during use, otherwise the support rod cannot be fixed, resulting in an inconvenient operation method. Summary of the Invention

[0004] The problem to be solved by the utility model is to provide an expandable suitcase that does not expose the items in the suitcase during the expansion process; after the user expands the box body to a suitable position, the fixing method is simple.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: an expandable suitcase, including a main body and a pull rod provided on the main body, the main body includes an upper box body, a lower box body and an expansion part provided between the upper box body and the lower box body, the expansion part includes a shell, a chute provided on the shell, a slider slidably matched with the chute, and a locking device for locking the slider. The upper part of the shell is fixedly connected to the upper box body, and the lower part of the shell is movably connected to the lower box body through the slider. The working principle of the utility model: the user adjusts the locking device to enable the chute to move relative to the slider, lifts the upper box body, and makes it slide along the chute, and the shell is gradually exposed to realize the expansion function. After adjusting to a suitable position, the locking device is adjusted so that the chute cannot move relative to the slider, thereby fixing the expansion part.

[0006] As an improvement, the sliding grooves are symmetrically arranged on the left and right sides of the housing. On both sides of the upper part of the lower box body, there are first locking holes. On the slider, there are second locking holes. The locking device is a bolt, and the bolt passes through the first locking hole and the second locking hole in sequence and then contacts the sliding groove.

[0007] As an improvement, the bottom of the upper box body is provided with a first frame fixedly connected thereto; the top of the lower box body is provided with a second frame fixedly connected thereto. On the left and right sides of the second frame, there are two symmetrically distributed protection grooves, and the first locking holes are arranged in the protection grooves.

[0008] As an improvement, the housing, the sliding groove and the upper box body are integrally formed.

[0009] As an improvement, the upper box body is provided with a first opening movably connected thereto; the lower box body is provided with a second opening movably connected thereto, and an adjusting belt is arranged on the second opening.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. The capacity is variable, and the volume of the luggage can be adjusted according to travel needs. When traveling, if more items need to be carried, the luggage can be stretched and expanded to increase the storage space, which can meet the needs for a larger storage space in situations such as shopping and long-term travel; if there is less luggage, it can be contracted to a smaller size, which is convenient for carrying and storing, and is more flexible in space utilization; the expansion part is adjusted by the pressure of the bolt on the sliding groove, and the operation is simple;

[0012] 2. It is convenient for storage. When not in use, the size of the contracted luggage is smaller, and the occupied space is also less, which is more convenient for storage at home or in places with limited space such as dormitories and hotels;

[0013] 3. The first opening and the second opening facilitate the user to take and store the items in the main body, optimizing the user experience. Description of the Drawings

[0014] Figure 1 It is a three-dimensional schematic diagram of the present utility model in a contracted state.

[0015] Figure 2 It is a three-dimensional schematic diagram of the present utility model in an expanded state.

[0016] Figure 3 It is a schematic diagram of the structure at the sliding groove.

[0017] Figure 4 It is a schematic diagram of the structure of the locking device, the slider and the sliding groove.

[0018] Explanation of reference numerals in the figure: 1. Upper box body; 11. First opening; 12. First frame; 2. Lower box body; 21. Second opening; 211. Adjusting belt; 22. Second frame; 221. Protection groove; 23. First lock hole; 3. Expansion part; 31. Housing; 32. Sliding groove; 33. Slide block; 331. Second lock hole; 34. Locking device. Embodiment

[0019] The present utility model will be further described in detail below with reference to the accompanying drawings of the specification.

[0020] As Figures 1 to 4 shown, an expandable luggage includes a main body, a pull rod provided on the main body, and a handle provided on the top of the main body. The main body includes an upper box body 1, a lower box body 2, and an expansion part 3 provided between the upper box body 1 and the lower box body 2. The expansion part 3 includes a housing 31, a sliding groove 32 provided on the housing 31, a slide block 33 slidably engaged with the sliding groove 32, and a locking device 34 for locking the slide block 33. The upper part of the housing 31 is fixedly connected to the upper box body 1, and the lower part of the housing 31 is movably connected to the lower box body 2 through the slide block 33. By adjusting the locking device 34, it is controlled whether the slide block 33 and the sliding groove 32 can move relative to each other. When the user lifts the handle, the handle drives the upper box body 1 and the housing 31 to slide the sliding groove 32 on the slide block 33.

[0021] As Figures 1 to 4 shown, the sliding grooves 32 are symmetrically distributed on the left and right sides of the housing 31, so that the housing 31 is more balanced and uniform in force during the sliding process, and the user experience can also be optimized. The sliding grooves 32 are provided on the outside of the housing 31 and integrally formed with the housing 31. The housing 31 and the upper box body 1 are integrally formed, saving manufacturing costs. The lower part of the upper box body 1 is provided with a first frame 12 fixedly connected thereto, strengthening the structural strength of the upper box body 1. The upper part of the lower box body 2 is provided with a second frame 22 fixedly connected thereto, strengthening the structural strength of the lower box body 2. At the same time, the mutual contact of the first frame 12 and the second frame 22 can also play a limiting role on the expansion part 3. The left and right sides of the lower box body 2 are provided with first lock holes 23, the slide block 33 is provided with second lock holes 331, and the locking device 34 is a bolt. The bolt passes through the first lock hole 23 and the second lock hole 331 in sequence and then contacts the sliding groove 32. The left and right sides of the second frame 22 are provided with symmetrically distributed protection grooves 221, and the second lock holes 331 are provided in the protection grooves 221. The protection grooves 221 can protect the first lock holes 23 and the locking device 34, preventing the locking device 34 from being contacted by other objects, causing the locking device 34 to become loose and affecting the fixation of the expansion part 3.

[0022] As Figure 1 and Figure 2As shown, a first opening 11 is provided on the upper box body 1 and is movably connected thereto. The first opening 11 is connected to the upper box body 1 through a first zipper, which facilitates the user to take the items stored in the upper box body 1. A second opening 21 is provided on the lower box body 2 and is movably connected thereto. The second opening 21 is connected to the lower box body 2 through a second zipper. An adjusting belt 211 for connecting the lower box body 2 is provided on the second opening 21. The user opens the second opening 21 and adjusts the adjusting belt 211 to control the opening angle of the second opening 21, which facilitates the user to take the items stored in the lower box body 2 and can also prevent the items from tipping over onto the ground due to excessive force and unbalanced stress caused by too many items.

[0023] Principle and beneficial effects of the present utility model: The user loosens the bolt to reduce the pressure exerted on the sliding groove 32 by the bolt, so that the sliding groove 32 can move relative to the slider 33. The user lifts the handle, and the upper box body 1 and the housing 31 move upward along the sliding groove 32. When it moves to a suitable position, the user tightens the bolt to increase the pressure on the sliding groove 32, so that the sliding groove 32 and the slider 33 cannot move relative to each other, thereby fixing the expansion part 3. The user operation is convenient, and the volume of the luggage can be adjusted according to travel needs. When traveling and more items need to be carried, the present utility model can be stretched and expanded to increase the storage space, which can meet the needs for a larger storage space in situations such as shopping and long-term travel. If there are fewer luggage items, it can be contracted to a smaller size, which is convenient for carrying and storing, and is more flexible in space utilization. Compared with traditional fixed-capacity luggage, the telescopic luggage has obvious advantages in dealing with different travel scenarios and changes in the number of luggage, avoiding the inconvenience caused by too many luggage items that cannot be loaded or too few luggage items but too large a box space. It is convenient for storage. When not in use, the size of the contracted luggage is smaller and it occupies less space. Whether it is stored at home or placed in places with limited space such as dormitories and hotels, it is more convenient. This is very important for people with small living spaces or those who need to store luggage frequently. During transportation, for example, when placing the luggage in the vehicle trunk or the aircraft luggage rack, the smaller size is also easier to place and does not occupy too much space, improving the space utilization rate. Compared with traditional textile expansion layer luggage, the expanded luggage will be unstable and the expansion capacity is very limited. We use a slide rail structure for expansion, which not only increases the stability after expansion, but also greatly increases the expansion capacity, realizing a super-expanded luggage with a 24-inch expansion to 28 inches. Moreover, the first opening 11 facilitates the user to take the items stored in the upper part of the main body, and the second opening 21 facilitates the user to take the items stored in the lower part of the main body. The design is reasonable and the user experience is optimized.

Claims

1. An expandable luggage case, comprising a main body and a pull rod provided on the main body, characterized in that: The main body includes an upper box body, a lower box body and an expansion part arranged between the upper box body and the lower box body, the expansion part includes a shell, a slide groove arranged on the shell body, a slider slidably matched with the slide groove and a locking device for locking the slider, the upper part of the shell body is fixedly connected to the upper box body, and the lower part of the shell body is movably connected to the lower box body through the slider.

2. The expandable luggage case according to claim 1, characterized in that: The slide groove is symmetrically arranged on the left and right sides of the shell, the upper sides of the lower box body are provided with first locking holes, the slider is provided with a second locking hole, the locking device is a bolt, and the bolt contacts the slide groove after passing through the first locking hole and the second locking hole in sequence.

3. The expandable luggage case according to claim 2, characterized in that: The bottom of the upper box is provided with a first frame fixedly connected thereto; the top of the lower box is provided with a second frame fixedly connected thereto, two symmetrically distributed protection grooves are provided on the left and right sides of the second frame, and the first lock hole is provided in the protection groove.

4. The expandable luggage case according to claim 1, characterized in that: The shell, the slide groove and the upper box body are integrally formed.

5. The expandable luggage case according to claim 1, characterized in that: The upper box body is provided with a first opening movably connected thereto; the lower box body is provided with a second opening movably connected thereto, and the second opening is provided with an adjustment belt.

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