A luggage case convertible into a crib

Abstract

This utility model discloses a suitcase that can be converted into a crib. The technical solution includes a suitcase body, a supporting structure, and a fixing base. The supporting structure is movably disposed at the bottom of the suitcase body and includes a supporting rod and a locking component. The supporting rod has a first position where it is retracted to the bottom of the suitcase body and a second position where it extends outward to support the suitcase body. The fixing base is disposed at the bottom of the suitcase body, fixedly connected to the suitcase body, and engages with the locking component, thereby restricting the horizontal displacement of the supporting rod in multiple directions when it is in the second position. This utility model improves the stability of the supporting structure through the engaging connection formed by the locking component and the fixing base.

Description

Technical Field

[0001] This utility model relates to the field of infant and child product technology, and in particular to a suitcase that can be converted into a crib. Background Technology

[0002] In the travel goods sector, convertible suitcases offer convenience for traveling with infants and toddlers. These products typically consist of a case, a support structure that can be detached from the bottom of the case, and connecting parts for securing the support structure when unfolded.

[0003] In existing technologies, a common implementation method is as follows: the support structure uses a rotatable support rod, with a connecting component (such as a pin or single-point buckle) at the connection point with the bottom of the crib. This component engages with a corresponding slot on the crib to achieve initial fixation after unfolding. However, because this existing connection method only provides constraint in a single direction or at a single point, its fixation method cannot effectively suppress displacement and swaying of the support rod in the horizontal plane (e.g., in the front-back or left-right directions) when the support rod is subjected to multi-directional forces generated by a child's movements. Therefore, existing technologies suffer from insufficient overall stability of the support structure, affecting the safety and reliability when used as a crib. Utility Model Content

[0004] The main purpose of this invention is to propose a suitcase that can be converted into a crib, aiming to solve the technical problem of insufficient overall stability of the support structure in the existing technology.

[0005] To achieve the above objectives, this utility model proposes a suitcase that can be converted into a crib, comprising:

[0006] The enclosure includes storage space for storing items or accommodating children;

[0007] The support structure is movably disposed at the bottom of the box and includes a support rod and a locking member. The support rod has a first position where it is retracted to the bottom of the box and a second position where it is extended outward to support the box.

[0008] The fixing seat is located at the bottom of the housing and is configured to be fixed to the housing and engaged with the locking member, thereby limiting the horizontal displacement of the support rod when the support rod is in the second position.

[0009] Furthermore, the fixing seat includes at least one side wall for engaging with the support rod body, the side wall being inclined to the bottom surface of the housing.

[0010] Furthermore, the fixing base also includes a fixing wall, which is disposed against the bottom surface of the housing, and the side wall is formed by extending from both sides of the fixing wall. At the same time, the fixing wall and the side wall together define a receiving chamber for accommodating one end of the support rod.

[0011] Furthermore, the sidewall includes a first engaging portion and a second engaging portion, and the orientation between the first engaging portion and the second engaging portion is set at a preset angle. When the support rod is in the first position, the engaging member engages with the first engaging portion; when the support rod is in the second position, the engaging member engages with the second engaging portion.

[0012] Furthermore, the range of the preset included angle is limited to 90° or more.

[0013] Furthermore, the first engaging portion and the second engaging portion are slot structures, and a transition portion is provided between the first engaging portion and the second engaging portion. The transition portion is constructed as an outwardly raised arc-shaped guide surface for guiding the engaging component.

[0014] Furthermore, the engaging component includes an inner end and an engaging end. The inner end is located within the support rod body, while the engaging end extends out from the support rod body and is used to engage the fixing seat. The support structure also includes an adjustment mechanism for driving the engaging component.

[0015] Furthermore, the adjustment mechanism includes a button and a reset member. The button is configured to disengage the engaging end from the fixed seat by driving its inner end to move in the direction extending inside the support rod. The reset member is configured to drive its inner end to perform a reset movement on the engaging end after the button is released.

[0016] Furthermore, the button component forms a first inclined surface, and the engaging component forms a second inclined surface that can abut against the first inclined surface, with the first and second inclined surfaces slidingly engaged.

[0017] Furthermore, the support rod includes a telescopic rod and a fixed rod. The fixed rod has a locking groove, and the telescopic rod is telescopically fitted onto the fixed rod. The telescopic rod also has a locking element for limiting its own sliding extension and retraction. The locking element extends out of the locking groove to limit the telescopic rod. The support rod also includes an unlocking mechanism for releasing the locking element. The unlocking mechanism includes a handle, a movable element, and a traction element. The handle is located at the end of the telescopic rod away from the fixed rod, and the movable element is located on the handle. The movable element is connected to the locking element through the traction element. The unlocking mechanism is configured such that the handle drives the movable element to move the traction element, causing the locking element to disengage from the locking groove, thereby releasing the limitation on the telescopic rod.

[0018] This utility model includes a housing, a supporting structure, and a fixing seat. The supporting structure is movably disposed at the bottom of the housing and includes a supporting rod and a locking member. The supporting rod has a first position where it is retracted to the bottom of the housing and a second position where it is extended outward to support the housing. The fixing seat is disposed at the bottom of the housing, fixedly connected to the housing, and engages with the locking member, thereby restricting the horizontal displacement of the supporting rod in multiple directions when it is in the second position. This utility model improves the stability of the supporting structure through the engaging connection formed by the locking member and the fixing seat. Attached Figure Description

[0019] Figure 1 Schematic diagram of the three-dimensional structure of existing technology Figure 1 ;

[0020] Figure 2 Schematic diagram of the three-dimensional structure of existing technology Figure 2 ;

[0021] Figure 3 Schematic diagram of the three-dimensional structure of existing technology Figure 3 ;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0025] Figure 7 A three-dimensional structural diagram showing the support rod in its retracted state and its interaction with the fixed base;

[0026] Figure 8 A three-dimensional structural diagram showing the support structure in its unfolded state and its interaction with the fixed base;

[0027] Figure 9 An exploded view of the three-dimensional structure of the supporting structure and the fixing base;

[0028] Figure 10 An exploded plan view of the supporting structure and the fixing base;

[0029] Figure 11 for Figure 10 Cross-sectional view of section line AA in the middle;

[0030] Figure 12 An exploded view of the three-dimensional structure of the supporting structure and the fixing base from another perspective;

[0031] Figure 13 This is a schematic diagram illustrating the cooperation between the locking and unlocking mechanisms.

[0032] The above figures include the following reference numerals:

[0033] 1. Housing; 11. Accommodation space; 2. Support structure; 21. Support rod; 211. Telescopic rod; 212. Fixed rod; 22. Engaging part; 221. Inner end; 2211. Second inclined surface; 222. Engaging end; 23. Intermediate rod; 3. Fixed seat; 31. Side wall; 311. First engaging part; 312. Second engaging part; 313. Transition part; 32. Fixed wall; 33. Accommodation chamber; 4. Adjustment mechanism; 41. Button; 411. First inclined surface; 42. Reset part; 43. Guide structure; 5. Unlocking mechanism; 51. Pull handle; 52. Movable part; 53. Traction part; 54. Intermediate part; 6. Locking part; 7. Lock groove. Detailed Implementation

[0034] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0035] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model include descriptions of a first or second feature, such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as first or second may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0037] Existing technologies such as Figures 1 to 3 As shown, the convertible suitcase has two modes of use: a crib mode and a suitcase mode. Switching between these modes meets the needs of caring for infants and toddlers during outings. It should be noted that when using the crib mode, the storage space 11 needs to extend upwards to meet safety standards for infant and toddler products. Figure 1The content shown is as follows. Existing convertible crib suitcases include a case body 1, a support structure 2, and connecting components. These connecting components are typically pins or buckles, and they connect to a slot on the bottom of the case body 1 to achieve mechanical constraint in a single direction or at a single point. However, this single-direction or single-point technique cannot effectively suppress the displacement and swaying of the support rod 21 in the horizontal plane (e.g., in the front-back or left-right directions). In summary, when used as a crib, the existing technology suffers from insufficient safety due to the violent swaying of the support rod 21 in the front-back and left-right directions.

[0038] In order to solve the stability problem of the aforementioned support structure 2 and thus improve safety, this utility model proposes a suitcase that can be converted into a crib.

[0039] In this embodiment of the utility model, such as Figures 4 to 13 As shown, the convertible crib suitcase includes a case body 1, a support structure 2, and a fixing base 3. The case body 1 includes a storage space 11 for storing items or accommodating a child. The support structure 2 is movably disposed at the bottom of the case body 1 and includes a support rod 21 and a locking member 22. The support rod 21 has a first position where it is retracted to the bottom of the case body 1 and a second position where it extends outward to support the case body 1. The fixing base 3 is disposed at the bottom of the case body 1 and configured to be fixedly connected to the case body 1 and engaged with the locking member 22, thereby limiting the horizontal displacement of the support rod 21 when it is in the second position. This invention, through the above structure, significantly improves the overall stability and safety of the support structure 2 compared to the simple connection methods in the prior art that only provide single-point or unidirectional constraints. Specifically, due to insufficient constraints, the existing technology causes the support structure 2 to easily shift and sway in the horizontal plane when subjected to dynamic loads, posing a safety hazard. However, the present invention, through the stable engagement formed between the fixed seat 3 and the engaging member 22, can effectively limit the horizontal displacement of the support rod 21 from multiple directions, fundamentally suppressing structural swaying and providing a stable and reliable support foundation for the box 1 used as a crib, thereby ensuring the safety of use.

[0040] In some embodiments of this utility model, the fixing base 3 includes at least one side wall 31 for engaging with the support rod 21, and the side wall 31 is inclined to the bottom surface of the housing 1. This inclined side wall 31 forms a sloped structure that integrates guidance and limiting. When the support rod 21 acts on this sloped surface, its force is decomposed, generating an inward component force that tightly presses the support rod 21 against the fixing base 3, forming a self-locking tendency, thereby significantly enhancing the tightness of the engagement. Simultaneously, the sloped surface provides a larger effective support area in the horizontal direction, forming a stable surface or line contact with the support rod 21, jointly suppressing displacement and swaying in the horizontal plane, and improving overall rigidity.

[0041] Specifically, the fixing base 3 also includes a fixing wall 32, which is disposed against the bottom surface of the housing 1. The side walls 31 are formed by extending from both sides of the fixing wall 32. The fixing wall 32 and the side walls 31 together define a receiving chamber 33 for accommodating one end of the support rod 21. Understandably, the receiving chamber 33 can simultaneously enclose and constrain the end of the support rod 21 from above, front, and both sides, achieving multi-directional restraint. This not only greatly enhances the ability to resist horizontal swaying but also effectively disperses local stress through surface contact, improving the load-bearing capacity and overall rigidity of the structure, thus providing an extremely stable supporting foundation for the housing 1.

[0042] In some preferred embodiments of this utility model, the fixing wall 32 is preferably fixed to the housing 1 by a threaded connector. In other embodiments of this utility model, the fixing seat 3 can also be fixed by integral molding with the housing 1, welding, or snap-fitting.

[0043] Specifically, the side wall 31 includes a first engaging portion 311 and a second engaging portion 312. The orientation of the first engaging portion 311 and the second engaging portion 312 is set at a preset angle. When the support rod 21 is in the first position, the engaging member 22 engages with the first engaging portion 311; when the support rod 21 is in the second position, the engaging member 22 engages with the second engaging portion 312. By providing engaging portions with different orientations, this invention provides independent and dedicated locking positions for the two states of the support rod 21: retracted and extended. This design ensures that the support rod 21 can obtain stable and reliable positioning in any usage state, effectively avoiding the problem of inaccurate positioning or accidental loosening caused by a single engaging portion needing to accommodate both states, thereby improving the operational certainty and safety of the product during different mode switching processes.

[0044] More specifically, the preset included angle is limited to a range of 90° or higher. This angle setting ensures a significant difference in spatial orientation between the first engaging portion 311 and the second engaging portion 312, thereby providing a clear travel path and a sense of positioning for the support rod 21 when switching between the two states. This right-angle or obtuse-angle design ensures, on the one hand, that the support rod 21, when extended to the second position, obtains a more open and stable support angle compared to the retracted state, optimizing the force-bearing structure; on the other hand, it also makes the transition area between the two engaging portions smoother, working in conjunction with the aforementioned arc-shaped guide surface to ensure the smoothness and reliability of the engaging component 22 when switching between different positions, further improving the user experience and structural stability.

[0045] Specifically, the first engaging portion 311 and the second engaging portion 312 are slot structures, and a transition portion 313 is provided between the first engaging portion 311 and the second engaging portion 312. The transition portion 313 is constructed as an outwardly raised arc-shaped guide surface for guiding the engaging member 22. This outwardly raised arc-shaped guide surface forms a smooth transition path between the two slots, and its core function is to guide the engaging member 22 to slide smoothly and without interference from one working position to another. This design effectively avoids rigid collision or jamming between the engaging member 22 and the fixed seat 3 when switching states, which not only makes the operation process more effortless and smooth, but also significantly reduces the wear and impact of components, thereby improving the operating feel, reliability and overall service life of the adjustment mechanism 4.

[0046] In some embodiments of this utility model, the support rods 21 are arranged in pairs on both sides of the housing 1, with an intermediate rod 23 between the support rods 21 in the same group. The intermediate rod 23 is used to enhance the stability of the support rods 21. In some preferred embodiments of this utility model, with the intermediate rod 23 positioned on the inside, the structural direction of the support rods 21 can extend outward from top to bottom, such as... Figure 10 As shown in the figure, the support rod 21 structure exhibits enhanced stability. This structural design connects the support rods 21 on both sides through a central rod 23, forming a stable overall frame and an approximately triangular rigid structure. This construction significantly enhances the torsional stiffness of the support system in the horizontal plane, effectively preventing the risk of the crib 1 tipping over due to unilateral force. More importantly, the outward-extending layout of the support rods 21 from top to bottom creates a support footing wider than the bottom surface of the crib 1, significantly lowering the overall center of gravity of the crib and thus achieving excellent resistance to lateral thrust and swaying, providing a higher level of safety for the child's activities.

[0047] In some embodiments of this utility model, the engaging component 22 includes an inner end 221 and an engaging end 222. The inner end 221 is located inside the support rod 21, while the engaging end 222 extends out from the support rod 21 and is used to engage the fixing seat 3. The support structure 2 also includes an adjustment mechanism 4 for driving the engaging component 22. This design separates the part performing the engaging function from the main body of the support rod 21, achieving modularity of function. The engaging end 222 is dedicated to locking with the fixing seat 3, while the inner end 221 serves as a force-bearing point connected to the adjustment mechanism 4. This clearly defined layout allows the user to precisely control the disengagement and resetting of the engaging component 22 without directly operating the entire support rod 21, simply through the dedicated adjustment mechanism 4. This greatly simplifies the operation steps of state switching and improves the convenience and efficiency of conversion. At the same time, this structure, by embedding the moving parts within the support rod 21, also helps maintain a clean appearance and avoid external interference.

[0048] Specifically, the adjustment mechanism 4 includes a button 41 and a reset member 42. The button 41 is configured to move its inner end 221 within the support rod 21 in the direction of its extension, causing the engaging end 222 to disengage from the fixed base 3. The reset member 42 is configured to, after the button 41 is released, drive its inner end 221 to reset the engaging member 22. This design integrates one-button operation with automatic reset. Users only need to press the button 41 once to unlock, making the operation intuitive and efficient. After release, the reset member 42 ensures that the engaging member 22 automatically and reliably returns to the locked position, effectively preventing false locking or accidental loosening due to forgetting to manually reset. This improves operational convenience while fundamentally enhancing the reliability and security of the lock.

[0049] In some preferred embodiments of this utility model, the reset member 42 is preferably a spring, with one end of the reset member 42 abutting against the support rod 21 and the other end abutting against the engaging member 22. In some other embodiments of this utility model, the reset member 42 can also be an elastic element made of elastic materials such as rubber or elastic fibers. The selection of elastic materials is part of the prior art and will not be described in detail here.

[0050] Furthermore, to ensure the stability of the movement trajectory of the button 41, the support rod 21 is preferably provided with a guide structure 43, such as a guide groove or guide post, for guiding the button 41 to move in a straight line. The guide structure 43 can effectively prevent the button 41 from deflecting or getting stuck during the pressing process.

[0051] Specifically, the button component 41 forms a first inclined surface 411, and the engaging component 22 forms a second inclined surface 2211 that abuts against the first inclined surface 411. The first inclined surface 411 and the second inclined surface 2211 are in sliding engagement. Understandably, the vertical movement of the button component 41 caused by the user pressing it is efficiently converted into a linear movement of the engaging component 22 in the horizontal direction through the engagement of the first inclined surface 411 and the second inclined surface 2211, thereby disengaging the engaging end 222 from the fixed base 3. This conversion of motion does not require complex gear or linkage mechanisms, which not only simplifies the overall structure and reduces manufacturing costs, but also provides high transmission efficiency and response speed due to its direct force transmission path, making the operation more effortless and providing clear feedback. The self-locking characteristic of the inclined surface engagement also ensures the reliability of locking in the non-operating state, further enhancing the stability of the structure.

[0052] In some preferred embodiments of this utility model, the inclination angles of the first inclined surface 411 and the second inclined surface 2211 are configured such that the button 41 has a self-locking characteristic at the end of its travel, thereby preventing the locking part 22 from accidentally retracting due to vibration during normal use. The surfaces of the first inclined surface 411 and the second inclined surface 2211 can be polished or have a lubrication structure provided to further improve the smoothness of sliding.

[0053] In some embodiments of this utility model, the support rod 21 includes a telescopic rod 211 and a fixed rod 212. The fixed rod 212 is provided with a locking groove 7. The telescopic rod 211 is telescopically fitted onto the fixed rod 212, and the telescopic rod 211 is provided with a locking member 6 for limiting its own sliding extension and retraction. The locking member 6 extends out of the locking groove 7 to limit the telescopic rod 211. It also includes an unlocking mechanism 5 for releasing the locking member 6. The unlocking mechanism 5 includes a handle 51, a movable member 52, and a traction member 53. The handle 51 is located at the end of the telescopic rod 211 away from the fixed rod 212, and the movable member 52 is located on the handle 51. The movable member 52 is connected to the locking member 6 through the traction member 53. The unlocking mechanism 5 is configured such that the handle 51 drives the movable member 52 to move the traction member 53, causing the locking member 6 to disengage from the locking groove 7, thereby releasing the limitation on the telescopic rod 211. This design achieves convenient adjustment and reliable locking of the crib height. When the user pulls the handle 51 with one hand, the moving part 52 undergoes an initial displacement synchronously with the handle 51. This action simultaneously tensions the traction part 53 and drives the locking part 6 to overcome its restoring force and disengage from the locking groove 7. At this moment, the mechanical interlock between the telescopic rod 211 and the fixed rod 212 is released, allowing the user to continue extending and retracting the telescopic rod 211 via the handle 51 without stopping, thus adjusting it to the desired height. This design integrates the unlocking and adjustment steps into a single continuous pulling action, enabling rapid one-handed operation.

[0054] Specifically, the traction component 53 is a flexible steel wire rope. Due to its excellent bending properties, the flexible steel wire rope is easy to route within the pole. It can be understood that the traction component 53 can also use rigid connecting rods, flexible transmission shafts, or other components to achieve force transmission.

[0055] More specifically, the connection between the traction member 53 and the telescopic rod 211 can be achieved by direct fixing or via the intermediate member 54. When the intermediate member 54 is used, it is preferably a sliding connecting ring disposed on the telescopic rod 211. The sliding connecting ring can move freely along the axial direction of the movable member 52, thereby automatically compensating for changes in the allowance of the traction member 53 caused by the pulling of the handle 51, playing a dynamic tensioning role, and effectively preventing the traction member 53 from becoming loose or interfering.

[0056] Specifically, the locking element 6 is preferably a steel ball or a pin, which is normally pressed towards the locking groove 7 by a built-in elastic element (such as a spring). When the locking element 6 is aligned with the locking groove 7, it automatically pops out under the action of the elastic element to complete the locking.

[0057] The following content serves as an explanation of the working principle of this utility model:

[0058] This invention achieves the conversion between crib mode and suitcase mode through the movement of the support structure 2 at the bottom of the housing 1. Its core working principle is as follows: when converting to a crib, the support rod 21 is extended outward from its first position (folded at the bottom of the housing 1) to a second position supporting the housing 1. During this process, the support rod 21 engages with the fixing seat 3 via the locking member 22 at its end. This connection generates a self-locking effect through the cooperation of the inclined side wall 31 and the locking member 22, and achieves multi-directional constraint through the accommodating chamber 33, thereby effectively suppressing the horizontal displacement of the support rod 21 and forming a stable support.

[0059] When the height of the crib needs to be adjusted, the operator can pull the handle 51 at the end of the telescopic rod 211, and drive the locking member 6 to retract through the traction member 53, thereby releasing the lock between the telescopic rod 211 and the fixed rod 212. After adjusting the height to the required height, the operator can release the handle 51, and the locking member 6 will extend into the corresponding locking groove 7 under the reset action to complete the fixation.

[0060] When the support structure 2 needs to be retracted, pressing the button 41 drives the locking component 22 to move horizontally via the inclined plane transmission, causing its locking end 222 to disengage from the locking part of the fixed base 3, thus retracting the support rod 21 to the bottom of the housing 1. The entire working process achieves a reliable transition between stable support and convenient retraction through the coordinated action of various components.

[0061] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A suitcase that can be converted into a crib, characterized in that, include: The enclosure includes storage space for storing items or accommodating children; The support structure is movably disposed at the bottom of the box and includes a support rod and a locking member. The support rod has a first position where it is retracted to the bottom of the box and a second position where it is extended outward to support the box. The fixing seat is located at the bottom of the housing and is configured to be fixed to the housing and engaged with the locking member, thereby limiting the horizontal displacement of the support rod when the support rod is in the second position.

2. The suitcase as described in claim 1, characterized in that: The mounting base includes at least one side wall for engaging with the support rod, the side wall being inclined to the bottom surface of the housing.

3. The suitcase as described in claim 2, characterized in that: The mounting base also includes a mounting wall, which is disposed against the bottom surface of the housing, and the side wall is formed by extending from both sides of the mounting wall. At the same time, the mounting wall and the side wall together define a receiving chamber for accommodating one end of the support rod.

4. The suitcase as described in claim 2 or 3, characterized in that: The side wall includes a first engaging part and a second engaging part, and the orientation between the first engaging part and the second engaging part is set at a preset angle. When the support rod is in the first position, the engaging part engages with the first engaging part; when the support rod is in the second position, the engaging part engages with the second engaging part.

5. The suitcase as described in claim 4, characterized in that: The range of the preset included angle is limited to 90° or higher.

6. The suitcase as described in claim 4, characterized in that: The first engaging part and the second engaging part are slot structures. A transition part is provided between the first engaging part and the second engaging part. The transition part is constructed as an outwardly raised arc-shaped guide surface for guiding the engaging parts.

7. The suitcase as described in claim 1, characterized in that: The engaging component includes an inner end and an engaging end. The inner end is located inside the support rod body, while the engaging end extends out from the support rod body and is used to engage the fixing seat. The support structure also includes an adjustment mechanism for driving the engaging component.

8. The suitcase as described in claim 7, characterized in that: The adjustment mechanism includes a button and a reset component. The button is configured to disengage the engaging end from the fixed seat by driving its inner end to move in the direction extending inside the support rod. The reset component is configured to drive its inner end to reset the engaging end after the button is released.

9. The suitcase as described in claim 8, characterized in that: The button component forms a first inclined surface, and the engaging component forms a second inclined surface that can abut against the first inclined surface. The first and second inclined surfaces slide together.

10. The suitcase as described in claim 1, characterized in that: The support rod includes a telescopic rod and a fixed rod. The fixed rod has a locking groove. The telescopic rod is telescopically fitted onto the fixed rod, and the telescopic rod has a locking element for limiting its own sliding extension and retraction. The locking element extends out of the locking groove to limit the telescopic rod. The support rod also includes an unlocking mechanism for releasing the locking element. The unlocking mechanism includes a handle, a movable element, and a traction element. The handle is located at the end of the telescopic rod away from the fixed rod, and the movable element is located on the handle. The movable element is connected to the locking element through the traction element. The unlocking mechanism is configured such that the handle drives the movable element to move the traction element, causing the locking element to disengage from the locking groove, thereby releasing the limitation on the telescopic rod.

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