Handle and pedal linkage folding mechanism and electric luggage case

Abstract

The invention belongs to the technical field of luggage cases, and particularly relates to a handle and pedal linkage folding mechanism and an electric luggage case. Comprising a base; the base sleeve is mounted on the base; the driving device is fixedly mounted on the base; the transmission screw rod is in transmission connection with the driving device; the vertical rod assembly is arranged in the base sleeve in a sliding mode. The first telescopic sleeve is arranged outside the transmission lead screw in a sleeving manner; the second telescopic sleeve is arranged between the first telescopic sleeve and the base sleeve in a sleeving manner and is in sliding connection with the first telescopic sleeve; the handle assembly is arranged at the top of the vertical rod assembly; the pedal assemblies are hinged to the two sides of the base and are in linkage with the vertical rod assembly, so that the pedal assemblies are switched between the folded state and the unfolded state. When the first telescopic sleeve is at the first position, the handle assembly is in a folded state; when the first telescopic sleeve moves upwards to a second position, the handle assembly is in an unfolded state; and when the first telescopic sleeve continuously moves upwards to a third position, the second telescopic sleeve is driven to synchronously move upwards.

Description

Technical Field

[0001] This invention belongs to the field of luggage technology, and particularly relates to a folding mechanism that links the handle and foot pedal and an electric luggage. Background Technology

[0002] In fields such as electric suitcases, in order to balance "functionality during use" and "convenience during storage / carrying", the handle and foot pedal are the core operating and supporting components. The design of their folding mechanism directly affects the user experience, space utilization and manufacturing cost of the product.

[0003] Currently, most suitcases use an "independent drive" or "manual operation" design for unfolding / folding the handle and retracting / unfolding the footrest, with no mechanical linkage between the two. If the handle is driven by one motor and the footrest by another, although automatic control is achieved, additional motors, transmission components, and control modules are required, leading to increased equipment costs.

[0004] Meanwhile, existing technologies have significant shortcomings in the coordinated design of handle folding and pole extension: on the one hand, handle folding largely relies on manual operation, requiring users to exert force independently to fold or unfold it, which is completely independent of the pole extension action and has no mechanical linkage relationship. When adjusting the pole height, users need to manually adjust the handle state, resulting in a fragmented operation process and greatly reduced convenience. On the other hand, even if some mechanisms have pole extension functions, their extension sleeves mostly adopt a "single-stage nesting" design, that is, the pole is raised and lowered in a straight line only through the threaded connection between the pole and the transmission screw, combined with the sleeve's restriction on the pole's rotation.

[0005] This single-stage design presents an irreconcilable contradiction between height and volume: if the need for a taller pole (such as to accommodate adult grip height or high-position operation of equipment) is required, the initial length of the pole body and sleeve must be increased accordingly, resulting in an excessively tall overall structure that is not in line with the basic requirements of portable electric suitcases; conversely, if the initial length of the pole and sleeve is shortened to control the storage volume, although the amount of protrusion during storage can be reduced, it will directly limit the maximum extension height of the pole, thus limiting the applicable scenarios.

[0006] Based on this, the present invention provides a novel folding mechanism that links the handle and the foot pedal, as well as an electric luggage case, to overcome the above-mentioned defects. Summary of the Invention

[0007] One objective of this invention is to provide a folding mechanism that links the handle and the foot pedal. This folding mechanism, through the three-position switching of the first telescopic sleeve, constructs a synchronous linkage mechanism of "handle retraction → unfolding → overall height increase" and "foot pedal retraction → unfolding". This allows the user to simultaneously adjust the handle posture, raise and lower the overall height, and retract and unfold the foot pedal by simply driving the first telescopic sleeve without having to operate the two types of components separately. This greatly simplifies the operation process and significantly improves ease of use.

[0008] This invention adopts the following technical solution: a folding mechanism that links the handle and the foot pedal, comprising:

[0009] Base;

[0010] Base sleeve, installed on the base;

[0011] The drive unit is fixedly mounted on the base;

[0012] The transmission screw is rotatably mounted inside the base sleeve and is connected to the drive device for transmission.

[0013] The upright assembly is slidably disposed within the base sleeve; it includes a first telescopic sleeve and a second telescopic sleeve, the first telescopic sleeve is sleeved outside the transmission screw and threadedly connected to the transmission screw; the second telescopic sleeve is sleeved between the first telescopic sleeve and the base sleeve and is slidably connected to the first telescopic sleeve.

[0014] A handle assembly is located at the top of the upright assembly;

[0015] The foot pedal assembly is hinged to both sides of the base and linked with the upright assembly, allowing the foot pedal assembly to switch between a stowed state and an unfolded state.

[0016] The first telescopic sleeve has a first position, a second position, and a third position;

[0017] When the first telescopic sleeve is in the first position, all handle assemblies are in a retracted state;

[0018] When the first telescopic sleeve moves upward to the second position, the handle assembly is in an unfolded state;

[0019] When the first telescopic sleeve continues to move upward to the third position, it drives the second telescopic sleeve to move upward synchronously.

[0020] Furthermore, the foot pedal assembly includes:

[0021] Two foot pedals are hinged to both sides of the base, respectively;

[0022] An energy storage component, connected between the foot pedal and the base, is used to store elastic potential energy when the foot pedal rotates from the unfolded state to the retracted state.

[0023] The drive frame is connected to the upright assembly and cooperates with the foot pedal.

[0024] Furthermore, a protruding structure is provided in the bottom region of the first telescopic sleeve in the pole assembly;

[0025] The drive frame is fixedly connected to the protruding structure at the bottom region of the first telescopic sleeve.

[0026] Furthermore, when the drive frame moves downward along with the upright assembly in the first direction, the drive frame presses down against the foot pedal near the base end, causing the foot pedal to rotate upward to a retracted state.

[0027] Furthermore, the drive frame is an inverted U-shaped frame;

[0028] The foot pedal has an abutment portion near the base, which is positioned opposite to the two free ends of the inverted U-shaped frame.

[0029] Furthermore, the handle assembly includes:

[0030] The handle mounting base is fixedly installed on the top end of the second telescopic sleeve;

[0031] Two handle bodies are respectively hinged to both sides of the handle mounting base;

[0032] Two sets of lever mechanisms, one end of each lever mechanism is hinged to the handle body, and the other end is hinged to the top area of ​​the first telescopic sleeve.

[0033] Furthermore, the top region of the first telescopic sleeve is provided with a protruding structure;

[0034] A groove is formed between the handle mounting base and the top end of the second telescopic sleeve;

[0035] The protruding structure at the top region of the first telescopic sleeve is located within the groove;

[0036] When the protruding structure at the top of the first telescopic sleeve slides in the groove, the handle body is switched between the retracted and extended states via the pull rod mechanism.

[0037] Furthermore, the protruding structure in the top region of the first telescopic sleeve is a lug structure extending along the second direction on both sides.

[0038] Furthermore, the pull rod mechanism is an arc-shaped pull rod, the first end of which is hinged to the handle body via a hinge shaft, and the second end of which is hinged to the lug structure via a hinge shaft.

[0039] Furthermore, one of the inner wall of the base sleeve and the outer wall of the second telescopic sleeve is provided with a connecting groove, and the other is provided with a connecting protrusion that mates with the connecting groove;

[0040] And / or, the inner wall of the second telescopic sleeve is provided with an inwardly protruding limiting structure to restrict the rotation of the first telescopic sleeve.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0042] The handle and foot pedal linkage folding mechanism of the present invention establishes a synchronous linkage mechanism of "handle retraction → unfolding → overall height increase" and "foot pedal retraction → unfolding" through the three-position switching of the first telescopic sleeve. Users do not need to operate the two types of components separately; they can simultaneously achieve handle posture adjustment, overall height increase and decrease, and foot pedal retraction and unfolding by simply driving the first telescopic sleeve, greatly simplifying the operation process and significantly improving ease of use.

[0043] Meanwhile, the device relies on a single power source to drive multiple actions, eliminating multiple independent drive components. This reduces manufacturing costs and effectively lightens the overall weight of the equipment, making it particularly suitable for the lightweight requirements of portable devices.

[0044] In addition, the first telescopic sleeve, the second telescopic sleeve and the base sleeve adopt a nested structure, combined with the linked foot pedal assembly and handle assembly, so that the mechanism can achieve an extremely compact state when stored; and the folding and lifting functions are integrated into the coaxial layout, which greatly reduces the space occupied by the structure. It is not only suitable for scenarios with limited installation space such as electric suitcases, but also makes the appearance of the equipment simple, compact and beautiful.

[0045] A second objective of the present invention is to provide an electric suitcase that includes the aforementioned folding mechanism that links the handle with the foot pedal. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a simplified structural diagram of the folding mechanism that links the handle and the foot pedal in Embodiment 1 of the present invention;

[0048] Figure 2 This is a schematic diagram of the folding part of the handle in the folding mechanism that links the handle and the foot pedal in Embodiment 2 of the present invention, and a schematic diagram of the handle body in the unfolded state. Figure 1 ;

[0049] Figure 3 This is a schematic diagram of the folding part of the handle in the folding mechanism that links the handle and the foot pedal in Embodiment 2 of the present invention, and a schematic diagram of the handle body in the folded state.

[0050] Figure 4 for Figure 2 A sectional view;

[0051] Figure 5 for Figure 2 A partial sectional view to show the structure of the connecting groove, connecting protrusion and limiting structure;

[0052] Figure 6 This is a schematic diagram of the folding part of the handle in the folding mechanism that links the handle and the foot pedal in Embodiment 2 of the present invention, and a schematic diagram of the handle body in the unfolded state. Figure 2 ;

[0053] The components include: base 10, base sleeve 11, connecting groove 111; drive device 2; transmission screw 3; first telescopic sleeve 4, protrusion structure 40, lug structure 401, push block 402; second telescopic sleeve 5, connecting protrusion 51, limiting structure 52; handle mounting seat 6, slide groove 60; handle body 7; pull rod mechanism 8, arc pull rod 80, clearance space 81; foot pedal 9, drive frame 90, near base end 91, far base end 92, abutment part 93, and pin 94. Detailed Implementation

[0054] The technical solutions in 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 protection scope of the present invention.

[0055] The following is in conjunction with the appendix Figure 1 To be continued Figure 6 The invention will be described in detail with specific embodiments:

[0056] like Figures 1 to 6 As shown, the present invention provides a folding mechanism that links the handle and the foot pedal, comprising:

[0057] Base 10;

[0058] The base sleeve 11 extends in the first direction and is mounted on the base 10;

[0059] The drive device 2 is fixedly mounted on the base 10, and the drive device 2 has an output shaft; in this embodiment, the drive device 2 is a servo motor.

[0060] The transmission screw 3 is rotatably installed in the base sleeve 11 and is connected to the drive device 2 to drive the transmission screw 3 to rotate.

[0061] The upright assembly is slidably disposed within the base sleeve 11; it includes a first telescopic sleeve 4 and a second telescopic sleeve 5. The first telescopic sleeve 4 is sleeved outside the transmission screw 3 and threadedly connected to the transmission screw 3, so that the first telescopic sleeve 4 can slide relative to the base sleeve 11 in a first direction. Correspondingly, the screw nut structure has a natural self-locking characteristic, which can stably lock the first telescopic sleeve 4 at any position, avoiding accidental sliding caused by external forces (such as gravity, user force), and improving the safety of the mechanism; the second telescopic sleeve 5 is sleeved between the first telescopic sleeve 4 and the base sleeve 11 and is slidably connected to the first telescopic sleeve 4, and the second telescopic sleeve 5 can slide relative to the base sleeve 11 in a first direction; a handle assembly is disposed on the top of the upright assembly;

[0062] The foot pedal assembly is hinged to both sides of the base 10 and linked with the upright assembly, so that the foot pedal assembly can switch between a retracted state and an unfolded state.

[0063] The first telescopic sleeve 4 has a first position, a second position and a third position;

[0064] When the first telescopic sleeve 4 is in the first position, all handle assemblies are in a retracted state;

[0065] When the first telescopic sleeve 4 moves upward to the second position, the handle assembly is in an unfolded state;

[0066] When the first telescopic sleeve 4 continues to move upward to the third position, it drives the second telescopic sleeve 5 to move upward synchronously.

[0067] It should be further explained that in this embodiment, the first position of the first telescopic sleeve 4 refers to the first telescopic sleeve 4 being at its lowest point, such as... Figure 3As shown, the handle assembly is in a retracted state at this time. The second position refers to the first telescopic sleeve 4 sliding upward a certain distance from the first position. During the sliding process, the handle assembly gradually opens until it reaches the second position, where it is fully extended. Simultaneously, the second telescopic sleeve 5 remains stationary within the base sleeve 11. The third position refers to the first telescopic sleeve 4 continuing to slide upward a certain distance from the second position. During this sliding process, the second telescopic sleeve 5 is driven to move upward synchronously, achieving an overall height increase. When the first telescopic sleeve 4 reaches the third position, the upright assembly reaches its highest position, as shown... Figure 2 As shown.

[0068] The handle and foot pedal linkage folding mechanism of the present invention establishes a synchronous linkage mechanism of "handle retraction → unfolding → overall height increase" and "foot pedal retraction → unfolding" through the three-position switching of the first telescopic sleeve 4. Users do not need to operate the two types of components separately. They can realize the handle posture adjustment, overall height increase and decrease, and foot pedal retraction and unfolding simultaneously by simply driving the first telescopic sleeve 4, which greatly simplifies the operation process and significantly improves the convenience of use.

[0069] Meanwhile, the device relies on a single power source to drive multiple actions, eliminating multiple independent drive components. This reduces manufacturing costs and effectively lightens the overall weight of the equipment, making it particularly suitable for the lightweight requirements of portable devices.

[0070] Furthermore, the transmission screw 3, the first telescopic sleeve 4, the second telescopic sleeve 5, and the base sleeve 11 adopt a nested structure, combined with the linked foot pedal assembly and handle assembly, enabling the mechanism to achieve extreme compactness in the folded state. The integration of transmission, folding, and lifting functions into a coaxial layout significantly reduces the structural space required, making it suitable not only for space-constrained scenarios such as electric luggage cases, but also for a simple, compact, and aesthetically pleasing appearance. Moreover, the linkage between "handle retraction → unfolding → overall lifting" and "foot pedal retraction → unfolding" can be achieved simply by driving the transmission screw 3 forward and backward via the drive device 2, simplifying the user's operation process and reducing the design complexity of the control system.

[0071] Furthermore, in some specific embodiments, the foot pedal assembly includes:

[0072] Two foot pedals 9 are respectively hinged to both sides of the base 10 via pins 94;

[0073] An energy storage component is connected between the foot pedal 9 and the base 10, and is used to store elastic potential energy when the foot pedal 9 rotates from the unfolded state to the retracted state.

[0074] The drive frame 90 is connected to the upright assembly and cooperates with the foot pedal 9.

[0075] During operation, the lifting and lowering of the upright assembly drives the synchronous movement of the drive frame 90, which in turn presses against the foot pedal 9 to achieve the transition between the unfolded state and the retracted state.

[0076] It should be noted that the drive frame 90 can be fixedly connected to the first telescopic sleeve 4 in the upright assembly, and can also be fixedly connected to the second telescopic sleeve 5, as long as it can be linked with the upright assembly to enable the foot pedal 9 to switch between the retracted state and the unfolded state.

[0077] In this embodiment, a protruding structure 40 is provided at the bottom region of the first telescopic sleeve 4 in the pole assembly; the drive frame 90 is fixedly connected to the protruding structure 40 at the bottom region of the first telescopic sleeve 4, that is, when the drive frame 90 moves with the first telescopic sleeve 4 in the first direction, the foot pedal 9 switches between the unfolded state and the retracted state. Compared with linkage with the second telescopic sleeve 5, the first telescopic sleeve 4 is directly driven by the drive device (such as a servo motor) through the transmission screw 3, which makes the stroke control more precise and avoids the lag in the movement of the foot pedal 9 caused by the "follow-up delay" of the second telescopic sleeve 5.

[0078] Specifically, when the drive frame 90 moves downward along with the upright assembly in the first direction, the drive frame 90 presses down against the near-base end 91 of the foot pedal 9, causing the foot pedal 9 to rotate upward to a retracted state. That is, when the first telescopic sleeve 4 is in the first position, the drive frame 90 installed at the bottom of the first telescopic sleeve 4 presses against the near-base end 91 of the foot pedal 9, causing the foot pedal 9 to be in a retracted state; as the first telescopic sleeve 4 moves upward, the drive frame 90 releases its pressure, and the energy storage element releases energy to drive the foot pedal 9 to return to the unfolded state.

[0079] As can be seen, in the first position, the handle assembly and foot pedal assembly are simultaneously folded, forming a "double-fold" initial form, ensuring that no parts protrude when the device is stored. As the first telescopic sleeve 4 moves upward, the drive frame 90 releases its pressure on the foot pedal 9, the energy storage component releases energy to drive the foot pedal to unfold, and at the same time, the handle assembly also gradually unfolds, realizing the "double-unfold" usage form. At the same time, the overall height of the upright assembly is at its minimum in the first position, and both the handle and foot pedal are folded, so that the mechanism achieves "three-dimensional space minimization" in the stored state—the vertical height is reduced due to the contraction of the upright assembly, and there are no protruding parts in the lateral direction due to the folding of the handle and foot pedal. This is especially suitable for devices that are sensitive to storage size, such as electric suitcases, and can reduce the storage space occupied by the device.

[0080] Furthermore, in some specific embodiments, the drive frame 90 is an inverted U-shaped frame, and the foot pedal 9 has a contact portion 93 formed at the base end 91, which is disposed opposite to the two free ends of the inverted U-shaped frame.

[0081] When the first telescopic sleeve 4 moves downward along the first direction, the inverted U-shaped frame, which is fixedly connected to the protruding structure 40 of the first telescopic sleeve 4, moves downward synchronously. The two free ends (the two ends of the open end) of the inverted U-shaped frame also move downward, gradually approaching the abutment part 93 of the foot pedal 9. Since the abutment part 93 is arranged opposite to the two free ends, when the inverted U-shaped frame continues to move downward until the two free ends contact the abutment part 93, the free ends apply a downward pressing force to the abutment part 93. This pressing force is transmitted through the abutment part 93 to the foot pedal near the base end 91, forming a rotational torque around the hinge point between the foot pedal 9 and the base 10, driving the foot pedal far from the base end 92 to rotate upward, ultimately causing the foot pedal 9 to switch from the unfolded state to the retracted state. During this process, the energy storage component accumulates elastic potential energy as the foot pedal 9 rotates. After the first telescopic sleeve 4 moves upward and the free ends of the inverted U-shaped frame disengage from the abutment part 93, the energy storage component releases energy to drive the foot pedal 9 to reset.

[0082] In this invention, the two free ends of the inverted U-shaped frame are "one-to-one" opposite to the contact part 93 of the foot pedal 9, forming a two-point symmetrical pressing structure. Compared with a single contact point, it can avoid the problem of "free ends separating from foot pedal 9" caused by force deviation during the pressing process, ensuring that the pressing force is stably transmitted to the foot pedal 9 and ensuring reliable triggering of the storage action.

[0083] Furthermore, in some specific embodiments, the energy storage component is a torsion spring (not shown in the figure), one end of which is connected to the foot pedal 9, and the other end is connected to the base 10. As a preferred embodiment, the torsion spring in this embodiment is a double torsion spring structure. The two helical segments of the double torsion spring are coaxially sleeved on the outer periphery of the pin 94, with one end fixedly connected to the foot pedal 9 and the other end fixedly connected to the base 10. Through the parallel design of the double torsion springs, the elastic potential energy storage capacity can be increased several times compared to a single torsion spring; the coaxial constraint design between the helical segments and the pin 94 enhances system stability.

[0084] Furthermore, in some specific embodiments, such as Figure 5 As shown, one of the inner wall of the base sleeve 11 and the outer wall of the second telescopic sleeve 5 is provided with a connecting groove 111, and the other is provided with a connecting protrusion 51 that cooperates with the connecting groove 111.

[0085] The sliding engagement between the connecting groove 111 and the connecting protrusion 51 forms an axial guide track, which constrains the movement trajectory of the second telescopic sleeve 5 relative to the base sleeve 11, preventing the sleeve from rotating circumferentially or shifting radially during lifting and lowering. It also works in synergy with the driving direction of the transmission screw 3 to ensure that the second telescopic sleeve 5 slides smoothly only along the first direction, reducing component wear caused by shaking (such as frictional loss at the contact point between the protrusion structure 40 and the sleeve).

[0086] In this embodiment, two connecting grooves 111 are provided on the inner wall of the base sleeve 11, and they are arranged symmetrically. Two connecting protrusions 51 are also provided on the outer wall of the second telescopic sleeve 5, which can improve the stability of lifting and sliding.

[0087] Furthermore, in some specific embodiments, the inner wall of the second telescopic sleeve 5 is provided with an inwardly protruding limiting structure 52, which is used to limit the rotation of the first telescopic sleeve 4. By cooperating with the outer wall of the first telescopic sleeve 4, the limiting structure 52 can limit the tendency of the first telescopic sleeve 4 to rotate synchronously with the transmission screw 3, ensuring that the rotational motion of the transmission screw 3 is completely converted into the sliding motion of the first telescopic sleeve 4 in the first direction.

[0088] It needs to be explained, such as Figure 5 As shown, in this embodiment, three limiting structures 52 are provided. Correspondingly, the outer wall of the first telescopic sleeve 4 is embedded into the receiving cavity of the inner wall of the second telescopic sleeve 5, and cooperates with the limiting structure 52 to constrain the rotation of the first telescopic sleeve 4. The specific shape of the limiting structure 52 is not limited in this invention; it can be designed by those skilled in the art based on actual conditions.

[0089] Furthermore, in some specific embodiments, the handle assembly includes:

[0090] The handle mounting base 6 is fixedly installed on the top end of the second telescopic sleeve 5;

[0091] Two handle bodies 7 are respectively hinged to both sides of the handle mounting base 6 and can switch between a folded state and an unfolded state; when the handle body 7 is close to the first direction, the handle body 7 is in the folded state, and when the handle body 7 is in the second direction, the handle body 7 is in the unfolded state.

[0092] Two sets of pull rod mechanisms 8, one end of each set of pull rod mechanisms 8 is hinged to the handle body 7, and the other end is hinged to the top area of ​​the first telescopic sleeve 4.

[0093] During operation, the first telescopic sleeve 4 rises in the first direction, and the two sets of pull rod mechanisms 8 pull the handle bodies 7 on both sides respectively, so that the handle bodies 7, which were originally in the retracted state, rotate around the hinge point with the handle mounting seat 6 and gradually change to the unfolded state.

[0094] The first telescopic sleeve 4 slides in the opposite direction (downward) along the first direction, and the handle body 7 is pulled in the opposite direction by the pull rod mechanism 8, so that it changes from the unfolded state to the retracted state, thus completing the handle folding process.

[0095] In some more specific embodiments, the top region of the first telescopic sleeve 4 is provided with a protrusion structure 40, which is used to cooperate with the second telescopic sleeve 5 to push the second telescopic sleeve 5 to slide relative to the base sleeve 11 in a first direction.

[0096] A groove 60 is formed between the handle mounting base 6 and the top end of the second telescopic sleeve 5;

[0097] The protruding structure 40 in the top region of the first telescopic sleeve 4 is located within the groove 60;

[0098] When the protruding structure 40 at the top of the first telescopic sleeve 4 slides in the groove 60, the handle body 7 is switched between the retracted state and the extended state by the pull rod mechanism 8.

[0099] During the sliding phase of the protruding structure 40 within the slide groove 60, the handle body 7 is only moved to change state via the pull rod mechanism 8. At this time, the second telescopic sleeve 5 remains stationary because it is not pushed by the protruding structure 40. Only after the protruding structure 40 slides to the end of the slide groove can the second telescopic sleeve 5 be moved up and down. This sequential partitioning of "handle posture change first, then upright assembly lifting and lowering" completely avoids the cross-interference of the two actions, ensuring that the handle unfolding / retracting and height adjustment are carried out in an orderly manner, and improving the reliability of the mechanism operation.

[0100] Meanwhile, the cooperation between the slide groove 60 and the protruding structure 40 also provides additional support for the axial movement of the first telescopic sleeve 4, reducing the swaying of the upright assembly and improving the overall structural stability.

[0101] Furthermore, in some specific embodiments, the protruding structure 40 in the top region of the first telescopic sleeve 4 is provided with lug structures 401 extending along the second direction on both sides, that is, lug structures 401 are provided on both sides of the top region of the first telescopic sleeve 4. During the telescopic sleeve storage stage, the first telescopic sleeve 4 needs to drive the second telescopic sleeve 5 to descend synchronously, and the force transmission direction is "downward pressing / dragging". The symmetrical lug structures 401 on both sides (extending along the second direction) can form "bidirectional symmetrical force" with the top of the second telescopic sleeve 5 through the lugs on both sides when the first telescopic sleeve 4 descends, preventing the sleeve from tilting or jamming due to unilateral force, and ensuring a smooth storage process.

[0102] The protruding structure 40 at the bottom region of the first telescopic sleeve 4 is a push block 402. The push block 402 is fixedly installed at the bottom region of the first telescopic sleeve 4 and is fixedly connected to the drive frame 90. The push block 402 can be an integral part of the first telescopic sleeve 4 or it can be a separate part. This invention does not make a specific limitation, and those skilled in the art can choose according to the actual situation.

[0103] Furthermore, in some specific embodiments, the pull rod mechanism 8 is an arc-shaped pull rod 80. The first end of the arc-shaped pull rod 80 is hinged to the handle body 7 via a hinge shaft, and the second end is hinged to the lug structure 401 of the first telescopic sleeve 4 via a hinge shaft. In this embodiment, the arc-shaped pull rod 80 is in the shape of a quarter circle, which adapts to the 90° rotation trajectory of the handle body 7 and reduces interference.

[0104] Meanwhile, an avoidance space 81 is provided on the side of the handle body 7 near the arc-shaped pull rod 80. The avoidance space 81 on the handle body 7 is a reserved trajectory for the movement of the arc-shaped pull rod 80, so as to avoid interference between the two.

[0105] The general working principle of the folding mechanism that links the handle and the foot pedal in this invention is as follows:

[0106] When the handle needs to be unfolded, the drive device 2 is activated, which drives the first telescopic sleeve 4 to slide in a straight line in the first direction (upward).

[0107] In the initial stage, the protruding structure 40 in the top area of ​​the first telescopic sleeve 4 is placed in the slide groove 60 and located near the top of the second telescopic sleeve 5. At this time, the drive frame 90 installed at the bottom of the first telescopic sleeve 4 presses against the foot pedal 9 near the base end 91, so that the foot pedal 9 is in a retracted state. As the first telescopic sleeve 4 moves upward, the two sets of pull rod mechanisms 8 pull the handle bodies 7 on both sides respectively, so that the handle bodies 7, which were originally in a retracted state, rotate around the hinge point with the handle mounting seat 6 and gradually change to an extended state. Correspondingly, after the drive frame 90 releases its pressure, the energy storage element releases energy to drive the foot pedal 9 to return to the extended state.

[0108] When the handle body 7 is fully extended, the first telescopic sleeve 4 continues to move upward. The protruding structure 40 of the first telescopic sleeve 4 rises and contacts the handle mounting seat 6. Since the handle mounting seat 6 is fixed to the top of the second telescopic sleeve 5, the second telescopic sleeve 5 is forced to move upward synchronously, so that the extended handle body 7 rises together with the second telescopic sleeve 5 in the first direction until it reaches the preset working position, thereby realizing the overall height increase of the folding mechanism that links the handle and the foot pedal.

[0109] When the handle needs to be folded, the protruding structure 40 in the top area of ​​the first telescopic sleeve 4 is placed in the slide groove 60 and located on the side away from the top of the second telescopic sleeve 5. The driving device drives the transmission screw 3 to rotate in the opposite direction, and the first telescopic sleeve 4 slides in the opposite direction (downward). The pull rod mechanism 8 pulls the handle body 7 to rotate in the opposite direction, changing it from the unfolded state to the retracted state, thus completing the handle folding process. Subsequently, the first telescopic sleeve 4 continues to move downward, and the protruding structure 40 in its top area descends and contacts the second telescopic sleeve 5. At this time, the first telescopic sleeve 4 drives the second telescopic sleeve 5 to move downward synchronously through the protruding structure 9. Since the handle mounting seat 6 is fixed to the top of the second telescopic sleeve 5, the handle mounting seat 6 and the retracted handle body 7 descend together with the second telescopic sleeve 5 in the first direction until they are reset to the initial working position.

[0110] At the same time, when the first telescopic sleeve 4 slides in the opposite direction (downward) along the first direction, the protruding structure 40 in the bottom area of ​​the first telescopic sleeve 4 drives the drive frame 90 to move down synchronously. The drive frame 90 presses against the near base end 91 of the foot pedal 9, and forms a torque around the hinge point to make the foot pedal 9 rotate upward to the storage state. During this process, the energy storage component stores energy.

[0111] In this invention, the folding mechanism that links the handle and the foot pedal can simultaneously complete "handle unfolding → overall height increase" and "foot pedal automatically unfolding" when unfolded by activating the drive device; when folded, the reverse drive can simultaneously achieve "handle retraction → overall height decrease" and "foot pedal automatic retraction". No additional operation of the foot pedal components is required, reducing the number of core components, simplifying the overall structure, and reducing manufacturing costs and assembly difficulty.

[0112] Meanwhile, the nested structure of "base sleeve 11 → second telescopic sleeve 5 → first telescopic sleeve 4", and the cooperation between the protruding structure 40, the sliding groove 60, and the sleeve, create a dual space optimization design of "telescopic + foldable", simultaneously meeting the "height requirements during use" and the "space requirements during storage". That is, when the handle is fully extended, the first telescopic sleeve 4 can continue to drive the second telescopic sleeve 5 to slide upward, realizing the overall height increase of the handle mounting base 6 and the handle after extension. In the folded state, the first telescopic sleeve 4 is completely retracted into the base sleeve 11, the second telescopic sleeve 5 moves downward simultaneously, the handle is folded and fits against the main body of the equipment, and the foot pedal 9 is stored upward to both sides of the base 10 - the overall structure has no redundant protrusions, and the space occupied by the equipment is greatly reduced.

[0113] Based on the aforementioned folding mechanism linking the handle and foot pedal, this invention also provides an electric suitcase, which includes the aforementioned folding mechanism linking the handle and foot pedal. This electric suitcase of the present invention includes at least all the technical solutions of the aforementioned folding mechanism linking the handle and foot pedal, and possesses at least all the advantages of the aforementioned folding mechanism linking the handle and foot pedal, which will not be elaborated further here.

[0114] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the nature and scope of the present invention. Various modifications made to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention.

Claims

1. A folding mechanism that links the handle and the foot pedal, characterized in that: It includes: Base; Base sleeve, installed on the base; The drive unit is fixedly mounted on the base; The transmission screw is rotatably mounted inside the base sleeve and is connected to the drive device for transmission. The upright assembly is slidably disposed within the base sleeve; it includes a first telescopic sleeve and a second telescopic sleeve, the first telescopic sleeve being sleeved outside the transmission screw and threadedly connected to the transmission screw. The second telescopic sleeve is sleeved between the first telescopic sleeve and the base sleeve and is slidably connected to the first telescopic sleeve. A handle assembly is located at the top of the upright assembly; The foot pedal assembly is hinged to both sides of the base and linked with the upright assembly, allowing the foot pedal assembly to switch between a stowed state and an unfolded state. The first telescopic sleeve has a first position, a second position, and a third position; When the first telescopic sleeve is in the first position, all handle assemblies are in a retracted state; When the first telescopic sleeve moves upward to the second position, the handle assembly is in an unfolded state; When the first telescopic sleeve continues to move upward to the third position, it drives the second telescopic sleeve to move upward synchronously.

2. The folding mechanism linking the handle and foot pedal according to claim 1, characterized in that: The foot pedal assembly includes: Two foot pedals are hinged to both sides of the base, respectively; An energy storage component, connected between the foot pedal and the base, is used to store elastic potential energy when the foot pedal rotates from the unfolded state to the retracted state. The drive frame is connected to the upright assembly and cooperates with the foot pedal.

3. The folding mechanism linking the handle and foot pedal according to claim 2, characterized in that: The bottom region of the first telescopic sleeve in the pole assembly has a protruding structure; The drive frame is fixedly connected to the protruding structure at the bottom region of the first telescopic sleeve.

4. The folding mechanism linking the handle and foot pedal according to claim 2 or 3, characterized in that: When the drive frame moves downward along with the upright assembly in the first direction, the drive frame presses down against the foot pedal near the base end, causing the foot pedal to rotate upward to the retracted state.

5. The folding mechanism linking the handle and foot pedal according to claim 2, characterized in that: The drive frame is an inverted U-shaped frame; The foot pedal has an abutment portion near the base, which is positioned opposite to the two free ends of the inverted U-shaped frame.

6. The folding mechanism linking the handle and foot pedal according to claim 1, characterized in that: The handle assembly includes: The handle mounting base is fixedly installed on the top end of the second telescopic sleeve; Two handle bodies are respectively hinged to both sides of the handle mounting base; Two sets of lever mechanisms, one end of each lever mechanism is hinged to the handle body, and the other end is hinged to the top area of ​​the first telescopic sleeve.

7. The folding mechanism linking the handle and foot pedal according to claim 6, characterized in that: The top area of ​​the first telescopic sleeve is provided with a protruding structure; A groove is formed between the handle mounting base and the top end of the second telescopic sleeve; The protruding structure at the top region of the first telescopic sleeve is located within the groove; When the protruding structure at the top of the first telescopic sleeve slides in the groove, the handle body is switched between the retracted and extended states via the pull rod mechanism.

8. The folding mechanism linking the handle and foot pedal according to claim 7, characterized in that: The protruding structure in the top region of the first telescopic sleeve is a lug structure extending along the second direction on both sides.

9. The folding mechanism linking the handle and foot pedal according to claim 7, characterized in that: The pull rod mechanism is an arc-shaped pull rod. The first end of the arc-shaped pull rod is hinged to the handle body through a hinge shaft, and the second end of the arc-shaped pull rod is hinged to the lug structure through a hinge shaft.

10. The folding mechanism linking the handle and foot pedal according to claim 1, characterized in that: One of the inner wall of the base sleeve and the outer wall of the second telescopic sleeve is provided with a connecting groove, and the other is provided with a connecting protrusion that mates with the connecting groove; And / or, the inner wall of the second telescopic sleeve is provided with an inwardly protruding limiting structure to restrict the rotation of the first telescopic sleeve.

11. An electric suitcase, characterized in that: The folding mechanism that links the handle and the foot pedal as described in any one of claims 1 to 10 is included.

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