Luggage case

Abstract

The invention discloses a luggage case, and relates to the technical field of storage, the luggage case comprises a luggage body, one side of the bottom of the luggage body is provided with direction wheels, and the other side of the bottom of the luggage body is provided with two driving wheels; the rotary telescopic handrail is vertically arranged on one side of the luggage in a penetrating and rotating manner, and the direction wheel is arranged at the lower end of the rotary telescopic handrail, so that the running direction and speed of the luggage are controlled through the rotary telescopic handrail; the pedal mechanism is installed at the bottom of the luggage, the pedal mechanism comprises two pedals which are symmetrically arranged, and the two pedals synchronously extend out of the outer side of the luggage or retract into the luggage through a driving assembly. Through the linkage design of the rotary telescopic handrail and the pedal mechanism, when the telescopic handrail stretches out or retracts back, the pedal mechanism can be automatically and synchronously unfolded or folded, the tedious step of manual adjustment is omitted, and the operation efficiency of the luggage case in the riding and storage mode switching process is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of storage, and in particular to a luggage case. Background Art

[0002] With the diversification and intelligent development of modern travel needs, traditional luggage is no longer just a passive hauling tool, but has gradually evolved into a comprehensive travel device that integrates storage, mobility, and intelligent connectivity. In scenarios such as short-distance urban commuting and airport transfers, traditional luggage carrying methods are no longer able to meet users' demands for efficiency and convenience due to slow walking speeds and inconvenient transportation. As a result, "electric luggage" products equipped with motors and intelligent control systems have been launched on the market. These products not only carry luggage but are also powered, reducing the user's burden and improving the travel experience.

[0003] However, as a rideable mobile device, electric luggage must fully consider ergonomics in its structural design to ensure stable and comfortable hand and foot support for users. Currently, most products on the market still use the manual structure of traditional luggage in terms of handles and pedals, which makes operation cumbersome and inconvenient to quickly deploy or fold. Summary of the Invention

[0004] The purpose of the present invention is to provide a suitcase that solves the problem that most products on the market still use the manual structure of traditional suitcases in the design of pull rods and footrests, which are cumbersome to operate and inconvenient to quickly unfold or fold.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions, which include: A bag, wherein one side of the bottom of the bag is provided with a steering wheel and the other side is provided with two driving wheels; A rotating and telescopic armrest, which is vertically penetrated and rotatably mounted on one side of the bag, and the steering wheel is mounted on the lower end of the rotating and telescopic armrest to control the direction and speed of the bag's movement by rotating the telescopic armrest; A pedal mechanism is mounted on the bottom of the bag and includes two symmetrically arranged pedals, which are synchronously extended out of the bag or retracted into the bag by a drive assembly; The trigger mechanism is arranged on the side wall of the bag on one side of the rotating telescopic armrest, and is used to drive the driving assembly to displace the two footrests when the telescopic end of the rotating telescopic armrest is extended or retracted.

[0006] Preferably, the rotating telescopic armrest includes an outer tube that vertically penetrates and is rotatably installed on the luggage, an inner tube is slidably arranged inside the outer tube, the inner tube is the telescopic end of the rotating telescopic armrest, the upper end of the inner tube extends out of the outer tube and is installed with an electric control handle, a lifting motor is installed at the lower end of the inner part of the outer tube, a screw is fixed to the output end of the lifting motor, and a threaded block threadedly connected to the screw is fixed inside the inner tube.

[0007] Preferably, the pedal mechanism further comprises a bottom plate fixed to the bottom of the bag, the drive assembly comprises a first gear rotatably mounted on the bottom plate via a rotating shaft, both sides of the first gear are meshedly connected to first racks, and the two first racks are respectively fixedly connected to the two pedals; A second rack meshing with the first gear is slidingly provided on the upper side of the base plate. One end of the second rack is connected to a trigger mechanism, and the second rack is pulled and displaced by the trigger mechanism. A tension spring for pulling the second rack back is installed between the base plate and the second rack.

[0008] Preferably, the footrest includes an inner plate slidably arranged on the base plate, and a U-shaped cover fixed to the base plate is provided on the upper side of the inner plate. The footrest includes an inner plate and an outer plate hinged to the outer end of the inner plate, and a support portion is fixed on the lower side of the outer end of the inner plate to support the outer plate when it is flattened.

[0009] Preferably, a self-flipping component is provided between the inner panel and the outer panel, which is used for automatically flipping upward to a set angle when the inner panel extends out of the bottom of the bag. The self-flipping component includes an elongated groove provided in the inner panel and the outer panel, a stopper is slidingly provided in the groove of the inner panel, the outer side of the stopper is connected with an elastic rope and a first drawstring in sequence, and the outer side of the first drawstring is connected to the inner wall of the groove of the outer panel, a bottom groove is provided on the inner top of the U-shaped cover, and the upper side of the stopper extends into the bottom groove, the length of the bottom groove is shorter than the length of the outer panel displaced outward, and when the outer panel displaces outward, it can be pulled upward and flipped by the first drawstring.

[0010] Preferably, a pull rod passing through the stop block is fixed to the inner end of the first pull belt, and a limiting block is fixed to the inner end of the pull rod.

[0011] Preferably, the trigger mechanism includes a slide fixed to the side wall of the bag, a slider is vertically slidably provided in the slide, the slider is connected to the second rack by a second pull belt, a rotating shaft is rotatably installed on the slider, a round rod is unidirectionally flipped and installed on the end of the rotating shaft close to the rotating and telescopic armrest, and an arc-shaped block is fixed to the telescopic end of the rotating and telescopic armrest; A second gear is fixed to the other end of the rotating shaft, a third rack and a fourth rack matched with the second gear are fixed to the upper and lower ends of the slide respectively, and an electric push rod for pressing the slider is fixed to the upper end of the slide.

[0012] Preferably, a base block and an abutment portion are fixed to the end of the rotating shaft, and the round rod is rotatably mounted on the base block via a torsion spring. The force of the torsion spring drives the round rod to flip toward one side of the abutment portion, and the abutment portion abuts against the round rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Through the linkage design of the rotating telescopic armrest and the footrest mechanism, when the telescopic armrest is extended or retracted, the footrest mechanism can automatically and synchronously expand or retract, eliminating the tedious steps of manual adjustment and significantly improving the operating efficiency of the suitcase when switching between riding and storage modes.

[0015] 2. The rotating and retractable armrest combined with the steering wheel and the electric control handle can accurately control the direction and speed of the suitcase. Users can achieve intelligent driving by rotating the armrest and turning the handle, which improves the shortcomings of traditional suitcases that are difficult to drag and enhances the travel experience.

[0016] 3. The pedal mechanism uses an automatically flippable outer plate, which can be flipped upward when extended to shorten the horizontal space occupied and avoid hindering the user's walking. When the user rides, the outer plate can be flattened and provide stable support through the support part, taking into account the comfort and safety of both walking and riding scenarios.

[0017] 4. The pedal mechanism achieves synchronous extension and retraction through the gear and rack drive assembly, ensuring consistent pedal movements on both sides; the cooperation of the tension spring and the trigger mechanism provides reliable storage power, enhancing the mechanical stability and service life of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the rotating and telescopic armrest in the present invention; Figure 3 for Figure 2 Schematic diagram of the half-cut three-dimensional structure; Figure 4 for Figure 2 Schematic diagram of the internal structure of the inner and outer tubes; Figure 5 This is a schematic diagram of the structure of the installation of the rotating and telescopic armrest, foot pedal mechanism and trigger mechanism in the present invention; Figure 6 for Figure 5 A in the middle is an enlarged structural diagram; Figure 7 This is a schematic diagram of the structure for round rod installation; Figure 8 Schematic diagram of the three-dimensional structure of the pedal mechanism of the present invention; Figure 9 for Figure 7 The enlarged structural diagram at B in the middle; Figure 10 This is a schematic structural diagram of the pedal mechanism of the present invention when it is stored; Figure 11 Schematic diagram of the structure of the pedal mechanism of the present invention when it is inverted; Figure 12 A schematic structural diagram of the pedal mechanism of the present invention when pedaling.

[0019] The numbers in the figure represent: 1- luggage; 21- driving wheel; 22- steering wheel; 3- rotating telescopic armrest; 31- outer tube; 32- inner tube; 33- electric control handle; 34- lifting motor; 35- screw; 4- pedal mechanism; 41- bottom plate; 42- inner plate; 421- supporting part; 43- U-shaped cover; 431- bottom groove; 44- first gear; 45- first rack; 46- second rack; 47- tension spring; 48- outer plate; 491- first drawstring; 492- limiting block; 493- pull rod; 494- stop block; 495- elastic rope; 5- trigger mechanism; 51- slide; 52- slide block; 53- second gear; 54- fourth rack; 55- third rack; 56- electric push rod; 57- second drawstring; 58- arc block; 59- round rod; 510- abutment part; 511- base block. DETAILED DESCRIPTION

[0020] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0021] Embodiment 1: This embodiment provides a technical solution: a suitcase, such as Figures 1 to 8 As shown, it includes a suitcase 1, a rotating and telescopic armrest 3, a foot-operated mechanism 4 and a trigger mechanism 5. A direction wheel 22 is provided on one side of the bottom of the suitcase 1, and two driving wheels 21 are provided on the other side. The driving wheel 21 is located on the rear side of the travel direction of the suitcase. The rotating and telescopic armrest 3 vertically penetrates and is rotatably installed on the front side of the travel direction of the suitcase 1, and the direction wheel 22 is installed at the lower end of the rotating and telescopic armrest 3 to control the travel direction and speed of the suitcase 1 by rotating the telescopic armrest 3; the driving wheel 21 has its own driving motor, and a suitable model on the market can be selected to drive the driving wheel 21 to rotate so that the suitcase 1 can travel, and the suitcase 1 is also provided with a battery to provide power to the rotating and telescopic armrest 3 and the driving wheel 21. How the battery is specifically connected to the driving wheel 21 and how to achieve its use effect are all existing technologies for professional and technical personnel in this field and will not be described in detail in this article.

[0022] The rotating telescopic armrest 3 includes an outer tube 31 that vertically penetrates and is rotatably installed on the luggage 1. Specifically, the interior of the luggage 1 has a hard shell, which serves as a rigid support for the luggage 1. The outer tube 31 is rotatably installed on the shell, and there is a certain gap between the shell and the outer tube 31. An inner tube 32 is slidably arranged inside the outer tube 31. The inner tube 32 is the telescopic end of the rotating telescopic armrest 3. The upper end of the inner tube 32 extends out of the outer tube 31 and is equipped with an electric control handle 33. The output end of the lifting motor 34 is fixed with a screw 35, and a threaded block threadedly connected to the screw 35 is fixed inside the inner tube 32. The lifting motor 34 is installed at the lower end of the inner part of the outer tube 31, and the steering wheel 22 is installed at the lower end of the outer tube 31.

[0023] The electric control handle 33 can be selected from existing models on the market, and its structure is the same as the handle of an electric vehicle. When the electric control handle 33 is turned, the driving speed can be controlled. The electric control handle 33 is electrically connected to the battery, the lifting motor 34 and the motor of the driving wheel 21 respectively to realize the operation control of the lifting motor 34. How the electric control handle 33 is specifically electrically connected to the battery, the lifting motor 34 and the motor of the driving wheel 21 and how to achieve its use effect are all existing technologies for professional and technical personnel in this field and will not be described in detail in this article. In addition, the electric control handle 33 has a button switch for controlling the operation of the lifting motor 34.

[0024] The lifting motor 34 can be controlled by the button switch on the electric control handle 33 to drive the inner tube 32 to move vertically, and further adjust the height of the electric control handle 33; when the electric control handle 33 is turned, the angle of the steering wheel 22 can be adjusted to control the direction of travel.

[0025] The pedal mechanism 4 is installed at the bottom of the bag 1. The pedal mechanism 4 includes two symmetrically arranged pedals. The two pedals are synchronously extended out of the outside of the bag 1 or retracted into the inside of the bag 1 through the driving component; the driving component includes a first gear 44 installed on the bottom plate 41 through a rotating shaft. The first gear 44 is meshed with first racks 45 on both sides, and the two first racks 45 are fixedly connected to the two pedals respectively.

[0026] When the first gear 44 rotates forward or reverse, the two first racks 45 cooperate with the first gear 44 to drive the two pedals to synchronously extend out of the bag 1 or retract into the bag 1. The power source and trigger mechanism 5 that drive the two pedals to extend out of the bag 1, and the power source and tension spring 47 that drive the two pedals to retract into the bag 1.

[0027] Furthermore, a second rack 46 meshing with the first gear 44 is slidingly provided on the upper side of the base plate 41. A sliding rod can be fixed on the base plate 41 through a support, and the second rack 46 is slidably installed on the sliding rod. At the same time, one end of the second rack 46 is connected to the trigger mechanism 5, and the second rack 46 is pulled and displaced by the trigger mechanism 5, and one end of the tension spring 47 is connected to the second rack 46, and the other end is connected to the support.

[0028] When in use, the trigger mechanism 5 is used to pull the first gear 44 to rotate in the forward direction, thereby driving the two pedals to extend synchronously out of the bag 1, and at this time the tension spring 47 will be stretched to deform and store force. When the trigger mechanism 5 is released, the second rack 46 will rebound due to the elastic force of the tension spring 47, driving the second rack 46 to rotate in the opposite direction, thereby driving the two pedals to retract into the bag 1.

[0029] The trigger mechanism 5 is arranged on the side wall of the bag 1 on the side of the rotating telescopic armrest 3. Specifically, the trigger mechanism 5 is installed on the side wall of the shell of the bag 1. It is used to drive the driving component to move the two pedals when the telescopic end of the rotating telescopic armrest 3 is extended or retracted.

[0030] The trigger mechanism 5 includes a slide 51 fixed to the side wall of the shell of the bag 1, and a slider 52 is vertically slidably provided in the slide 51. The slider 52 is connected to the second rack 46 through a second drawstring 57. The second drawstring 57 can be guided by rollers during its arrangement so that the second drawstring 57 can be arranged in a curved manner. The number of rollers is set according to needs. The slider 52 is rotatably installed with a rotating shaft. A round rod 59 is unidirectionally flipped and installed at one end of the rotating shaft close to the rotating telescopic armrest 3. The telescopic end of the rotating telescopic armrest 3, i.e., the inner tube 32, is fixed. There is an arc block 58. Specifically, an elongated through hole is opened on the outer tube 31, and the arc block 58 passes through the elongated through hole and is fixed to the inner tube 32. The outer edge of the arc block 58 is set in an arc shape, and the center of the arc is located at the same point as the center of rotation of the rotating telescopic armrest 3. When the arc block 58 is vertically displaced with the inner tube 32, the arc block 58 will contact the round rod 59. Since the outer edge of the arc block 58 is set in an arc shape, it can be ensured that the arc block 58 can always contact the round rod 59 within the rotation angle of the rotating telescopic armrest 3.

[0031] A base block 511 and an abutment portion 510 are fixed to the end of the rotating shaft. The base block 511 is located at the center of the rotating shaft, and the abutment portion 510 is located at one side edge of the rotating shaft. The round rod 59 is rotatably mounted on the base block 511 through a torsion spring (not shown in the figure). The force of the torsion spring drives the round rod 59 to flip toward one side of the abutment portion 510. Therefore, in the absence of other forces, the round rod 59 maintains abutment with the abutment portion 510, and at this time the round rod 59 is horizontal.

[0032] A second gear 53 is fixed to the other end of the rotating shaft, and a third rack 55 and a fourth rack 54 that cooperate with the second gear 53 are fixed to the upper and lower ends of the slide 51 respectively. An electric push rod 56 is fixed to the upper end of the slide 51 to press the slider 52 tightly. When the slider 52 moves to the uppermost position of the slide 51, the telescopic end of the electric push rod 56 is extended to press the slider 52 tightly to prevent it from falling.

[0033] When the slider 52 is at the lowermost position of the slide 51, the cooperation between the second gear 53 and the fourth rack 54 will drive the rotating shaft to rotate. At this time, the abutment 510 is located on the upper side of the base block 511. Therefore, the round rod 59 can only be flipped downward. When the arc block 58 moves upward with the inner tube 32, the arc block 58 will drive the slider 52 to move upward. In this process, the pulling of the slider 52 will drive the second rack 46 to move, thereby driving the first gear 44 to rotate, and the two pedals will extend out of the bag 1. At the same time, the cooperation between the second gear 53 and the fourth rack 54 will drive the rotating shaft to rotate 90 degrees, so that the abutment 510 is located on the side of the base block 511. At this time, the arc block 5 8 can continue to contact the round rod 59 and push it to move upward until the second gear 53 is engaged with the third rack 55. As the slider 52 moves upward, under the action of the third rack 55, the rotating shaft will be driven to rotate another 90° angle. At this time, the slider 52 is tightly fixed by extending the telescopic end of the electric push rod 56. At the same time, since the abutment portion 510 rotates to the lower side of the base block 511, the flipping direction of the round rod 59 is upward. Therefore, the round rod 59 will be pushed to flip by the arc block 58. The round rod 59 will no longer block the arc block 58, and the second gear 53 continues to move upward, completing the extension of the two footrests and the extension of the rotating telescopic armrest 3; on the contrary, when the electric push rod 56 is extended and contracted, due to the force of the tension spring 47, the second rack 46 and the slider 52 will move to their original positions, and the two footrests will also shrink.

[0034] Example 2: This example is further optimized based on Example 1, and the same parts as the above technical solutions will not be repeated here. Figures 8 to 12 As shown, in order to prevent the footrest from being too long and hindering the user's normal walking when the footrest is extended out of the bag 1 and the user does not sit on the bag 1, the footrest is set to be automatically flippable in this embodiment, and the following setting method is further adopted: In this embodiment, the footrest includes an inner plate 42 slidably arranged on the bottom plate 41, the bottom plate 41 is fixedly connected to the shell of the bag 1, and a U-shaped cover 43 fixed to the bottom plate 41 is provided on the upper side of the inner plate 42, and a sliding cavity is formed between the U-shaped cover 43 and the bottom plate 41, and the footrest is slidably arranged in the sliding cavity. The footrest includes an inner plate 42 and an outer plate 48 hinged to the outer end of the inner plate 42. A support portion 421 is fixed to the lower side of the outer end of the inner plate 42 to support the outer plate 48 when it is flattened. Figure 12 As shown, after the outer panel 48 extends out of the sliding cavity, the outer panel 48 can be flipped upward to avoid it hindering the user's walking.

[0035] Furthermore, a self-flipping assembly is provided between the inner panel 42 and the outer panel 48. This assembly is configured to automatically flip upward to a set angle when the inner panel 42 extends beyond the bottom of the bag 1. The assembly includes elongated grooves formed in the inner panel 42 and the outer panel 48. A stopper 494 is slidably disposed within the groove of the inner panel 42. An elastic cord 495 and a first drawstring 491 are sequentially connected to the outer side of the stopper 494. The outer side of the first drawstring 491 is connected to the inner wall of the groove of the outer panel 48. A bottom groove 431 is defined at the inner top of the U-shaped cover 43. The upper side of the stopper 494 extends into the bottom groove 431. The length of the bottom groove 431 is shorter than the outward displacement length of the outer panel 48. The force required to stretch the elastic cord 495 is greater than the force required to pull the outer panel 48 upward. A pull rod 493 is fixed to the inner end of the first drawstring 491, extending through the stopper 494. A limiting block 492 is fixed to the inner end of the pull rod 493.

[0036] When the pedal moves outward, the stopper 494 will first contact the outer end of the bottom groove 431, thereby limiting the outward displacement of the stopper 494. At this time, the driving assembly will continue to push the pedal to move outward, and the first pull belt 491 will pull the outer plate 48 to flip inward, so that the outer plate 48 is tilted upward. Compared with the outer plate 48 when it is flat, the lateral dimension of the outer plate 48 extending outward is shortened. Figure 11 As shown; if the user sits on the bag 1 and steps on the outer plate 48, the outer plate 48 will be flattened by the user's feet, and the elastic rope 495 will be stretched, and the limiting block 492 abuts against the stopper 494, so that the first drawstring 491 and the pull rod 493 pull the outer plate 48, giving the outer plate 48 a supporting force, as shown Figure 12 On the contrary, when the inner plate 42 is retracted into the sliding cavity, the outer plate 48 will be flipped to a flat state due to its own force and will be stored in the sliding cavity, as shown Figure 10 shown.

[0037] The above description is merely a preferred embodiment of the present invention and is intended to be illustrative rather than restrictive of the present invention. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the present invention within the spirit and scope of the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A suitcase, characterized in that: include: A bag (1), wherein a direction wheel (22) is provided on one side of the bottom of the bag (1), and two driving wheels (21) are provided on the other side; A rotating telescopic armrest (3), the rotating telescopic armrest (3) is vertically penetrated and rotatably mounted on one side of the bag (1), and the direction wheel (22) is mounted on the lower end of the rotating telescopic armrest (3) to control the direction and speed of travel of the bag (1) by rotating the telescopic armrest (3); A pedal mechanism (4), the pedal mechanism (4) being mounted on the bottom of the bag (1), the pedal mechanism (4) comprising two symmetrically arranged pedals, the two pedals being synchronously extended out of the bag (1) or retracted into the bag (1) by a driving assembly; A trigger mechanism (5) is provided on a side wall of the bag (1) on one side of the rotating telescopic armrest (3), and is used to drive the driving assembly to move the two footrests when the telescopic end of the rotating telescopic armrest (3) is extended or retracted.

2. The suitcase according to claim 1, wherein: The rotating telescopic armrest (3) comprises an outer tube (31) vertically penetrating and rotatably mounted on the bag (1); an inner tube (32) is slidably arranged inside the outer tube (31); the inner tube (32) is the telescopic end of the rotating telescopic armrest (3); the upper end of the inner tube (32) extends out of the outer tube (31) and is mounted with an electric control handle (33); a lifting motor (34) is mounted at the lower end of the inner portion of the outer tube (31); a screw (35) is fixed to the output end of the lifting motor (34); and a threaded block threadedly connected to the screw (35) is fixed inside the inner tube (32).

3. The suitcase according to claim 1, wherein: The pedal mechanism (4) further comprises a bottom plate (41) fixed to the bottom of the bag (1); the drive assembly comprises a first gear (44) rotatably mounted on the bottom plate (41) via a rotating shaft; first racks (45) are meshedly connected on both sides of the first gear (44), and the two first racks (45) are fixedly connected to the two pedals respectively; A second rack (46) meshing with the first gear (44) is slidably provided on the upper side of the base plate (41), one end of the second rack (46) is connected to the trigger mechanism (5), and the second rack (46) is pulled and displaced by the trigger mechanism (5). A tension spring (47) for pulling the second rack (46) back is installed between the base plate (41) and the second rack (46).

4. The suitcase according to claim 3, wherein: The footrest comprises an inner plate (42) slidably arranged on the bottom plate (41), and a U-shaped cover (43) fixed to the bottom plate (41) is arranged on the upper side of the inner plate (42). The footrest comprises the inner plate (42) and an outer plate (48) hinged to the outer end of the inner plate (42). A support portion (421) is fixed on the lower side of the outer end of the inner plate (42) to support the outer plate (48) when it is flattened.

5. The suitcase according to claim 4, wherein: A self-flipping assembly is provided between the inner plate (42) and the outer plate (48), which is used to automatically flip upward to a set angle when the inner plate (42) extends out of the bottom of the bag (1). The self-flipping assembly includes an elongated groove provided in the inner plate (42) and the outer plate (48), a stopper (494) is slidably provided in the groove of the inner plate (42), the outer side of the stopper (494) is connected with an elastic rope (495) and a first drawstring (491) in sequence, and the outer side of the first drawstring (491) is connected to the inner wall of the groove of the outer plate (48), the inner top of the U-shaped cover (43) is provided with a bottom groove (431), and the upper side of the stopper (494) extends into the bottom groove (431), the length of the bottom groove (431) is shorter than the length of the outer plate (48) displaced outward, so as to realize the pulling upward flipping through the first drawstring (491) when the outer plate (48) displaces outward.

6. The suitcase according to claim 5, wherein: A pull rod (493) penetrating the stop block (494) is fixed to the inner end of the first pull belt (491), and a limiting block (492) is fixed to the inner end of the pull rod (493).

7. The suitcase according to claim 3, wherein: The trigger mechanism (5) includes a slide (51) fixed to the side wall of the bag (1), a slider (52) is vertically slidably provided in the slide (51), the slider (52) is connected to the second rack (46) via a second drawstring (57), the slider (52) is rotatably mounted with a rotating shaft, and a round rod (59) is unidirectionally flipped and mounted on one end of the rotating shaft close to the rotating telescopic armrest (3), and an arc block (58) is fixed to the telescopic end of the rotating telescopic armrest (3); A second gear (53) is fixed to the other end of the rotating shaft, a third rack (55) and a fourth rack (54) that cooperate with the second gear (53) are fixed to the upper and lower ends of the slide (51), and an electric push rod (56) that presses against the slider (52) is fixed to the upper end of the slide (51).

8. The suitcase according to claim 7, wherein: A base block (511) and an abutting portion (510) are fixed to the end of the rotating shaft. The round rod (59) is rotatably mounted on the base block (511) via a torsion spring. The force of the torsion spring drives the round rod (59) to flip toward one side of the abutting portion (510), and the abutting portion (510) abuts against the round rod (59).

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