Integrated chassis for electric suitcase and electric suitcase

Abstract

The invention provides an integrated chassis for an electric suitcase. The integrated chassis is provided with an integrally formed frame body. The frame body is in a disc shape, and the maximum width of the frame body is smaller than the maximum length of the frame body. A first connector used for installing a front wheel is formed in the frame body. A second connector used for installing a rear wheel is formed in the frame body. According to the integrated chassis, the integrally-formed frame body serves as a bearing main body, splicing of parts is reduced, the frame body is in a long disc shape, the structural strength is high, thin wall of the frame body is facilitated, materials are reduced, the self weight is reduced, splicing process links are reduced, the assembling time is saved, and the mass production cost is low. The long disc-shaped frame body is favorable for forming an accommodating space in the frame body so as to accommodate parts such as a battery, a guide rail and a controller, is favorable for preventing the internal space of the suitcase body from being occupied by the parts such as the guide rail or the battery, is favorable for improving the effective storage utilization rate of the internal storage space of the suitcase body, and is convenient for storing large luggage.

Description

Technical Field

[0001] This invention relates to the field of travel equipment, and more particularly to an integrated chassis for an electric suitcase and an electric suitcase. Background Technology

[0002] Electric suitcases, also known as electric smart suitcases, have become a popular new travel accessory in recent years. Especially in large spaces like airports and train stations, they can be ridden directly, saving time and effort.

[0003] Most existing electric suitcases have a modular structure. Chinese patent ZL202421706701.2 discloses an intelligent electric suitcase that lacks an independent supporting chassis. The rear wheel wells and front panel are manufactured separately and fixed to both sides of the suitcase's inner frame. The rear wheel wells, front panel, and inner frame all require significant structural strength, resulting in a heavy overall weight. The connection strength between the rear wheel wells, front panel, and inner frame is low, making assembly complex. The battery is mounted on the side of the suitcase, and the battery and drive mechanism, among other core components, are dispersed, occupying a large amount of space and reducing overall reliability. The guide rails directly intrude into the interior space, fragmenting the internal storage space, making it unsuitable for accommodating small items, and the suitcase has poor sealing, making it prone to leakage and offering poor rain protection.

[0004] Chinese patent ZL202423147337.3 discloses a detachable electric suitcase whose base is composed of a rear wheel connecting shell, a mounting shell, and a support seat. The structure is complex, the processing cost is high, and the connection strength is low.

[0005] The chassis of traditional electric suitcases has not undergone targeted lightweight optimization, resulting in excessive weight, short battery life, and inconvenience in carrying them, making it difficult to meet the demands of modern high-end travel equipment for lightweight, integrated, and highly reliable features. Summary of the Invention

[0006] The primary objective of this invention is to provide an integrated chassis for electric suitcases that is lightweight and has high strength.

[0007] To achieve the above objectives, the integrated chassis for electric suitcases of the present invention has the following characteristics: The integrated chassis has a one-piece molded frame.

[0008] The frame is disc-shaped, and its maximum width is less than its maximum length.

[0009] The frame has a first interface for mounting the front wheel.

[0010] The frame has a second interface for mounting the rear wheel.

[0011] Therefore, it is evident that the integrated chassis uses a one-piece molded frame as the main load-bearing structure, reducing the splicing of parts. The long, disc-shaped frame has high structural strength, which facilitates thinner frame walls, reduces material usage, lowers weight, reduces assembly processes, saves assembly time, and reduces mass production costs. The long, disc-shaped frame allows for the creation of internal storage space to accommodate components such as batteries, guide rails, and controllers. This prevents the interior space of the suitcase from being encroached upon by guide rails or batteries, improving the effective utilization of the internal storage space and facilitating the storage of large items.

[0012] Furthermore, a battery housing is formed inside the frame, and the sidewall of the battery housing extending from the bottom of the frame along the height direction serves as the first reinforcing rib of the frame.

[0013] The sidewalls can be used for battery mounting and fixing, as well as as reinforcing ribs for the frame. They support each other, which helps to further reduce the thickness of each component, making the overall structure lighter, simplifying the structure, and reducing production costs.

[0014] Furthermore, the battery receiving portion is located in the middle of the frame along the width direction; the inner cavity of the battery receiving portion extends along the length direction of the frame; the battery receiving portion is a concave cavity with an opening facing downwards.

[0015] It helps improve the axial symmetry of the frame. Whether the frame is cast, injection molded, sintered, or additively manufactured, it helps simplify the design, reduce the processing difficulty, and reduce the cost.

[0016] The battery housing is a downward-facing concave cavity, which can be easily separated into upper and lower molds, simplifying the mold for frame forming.

[0017] In other embodiments, the battery housing is a rearward-opening cavity.

[0018] Easy and quick battery installation and removal. Even when placed in a confined space, the battery in the electric suitcase can still be easily installed and removed.

[0019] Furthermore, the first and second interfaces can be selectively fitted with drive wheels.

[0020] Electric drive can be achieved by installing a drive wheel at least once either the first or second interface. Front-wheel drive is beneficial for increasing traction stability, while rear-wheel drive is beneficial for increasing driving friction when climbing hills.

[0021] Furthermore, the first slide rail is mounted on the first interface; the front wheel is mounted on the slide platform of the first slide rail.

[0022] The front wheels are mounted on the frame via retractable rails. When the slide extends outwards, it helps to increase the wheelbase between the front and rear wheels, improving the stability of the electric suitcase and expanding its applicability to a wider range of people.

[0023] Furthermore, the front wheel is the drive wheel and is mounted on the slide in an adjustable direction via a front fork.

[0024] The front wheel is the drive wheel, and only one drive wheel is needed to complete the drive, which helps to reduce the drive cost and also improves stability.

[0025] Furthermore, the front side of the frame is integrally formed with a front wheel receiving cavity; the rear side of the frame is integrally formed with a rear wheel receiving cavity; the cavity walls of the front wheel receiving cavity and the rear wheel receiving cavity both serve as the second reinforcing ribs of the frame.

[0026] The walls of the front wheel cavity and the rear wheel cavity are integrally formed on the frame and serve as the second reinforcing ribs of the frame. Structurally, they support each other, which helps to further reduce their thickness, which is beneficial for overall lightweighting, simplifying the structure, and reducing production costs.

[0027] Furthermore, the pop-out foot pedal is installed on the front side of the frame via a tube that extends along the width of the frame and is fixed to the frame.

[0028] The tube body serves as the housing for the pop-out foot pedal and is fixedly mounted on the frame. It also acts as a structural reinforcement component for the frame, achieving two goals at once: it helps to reduce overall weight and production costs.

[0029] Furthermore, a cover plate is installed on the top of the frame; a support frame is installed on the frame; the upper side of the support frame abuts against the lower side of the cover plate.

[0030] The support frame supports the cover plate. The two can be made of different materials. The cover plate has appearance requirements during processing, while the support plate does not. Separate manufacturing helps reduce manufacturing costs and facilitates internal connection and fixation of the frame.

[0031] Another object of the present invention is to provide an electric suitcase with high structural strength and lightweight.

[0032] To achieve this goal, the following plan is proposed: An electric suitcase, having any of the aforementioned integrated chassis for electric suitcases, further includes: a front wheel mounted via a first interface, a rear wheel mounted via a second interface, a cover plate mounted on the integrated chassis, a case body detachably mounted on the integrated chassis, and a rotatable control lever mounted on the front side of the integrated chassis.

[0033] Therefore, it is evident that the integrated chassis uses a one-piece molded frame as the main load-bearing structure, reducing the number of parts splicing. The elongated disc-shaped frame has high structural strength, facilitates thinner frame walls, reduces material usage, lowers weight, reduces assembly processes, saves assembly time, and lowers mass production costs. The elongated disc-shaped frame allows for the creation of internal storage space to accommodate components such as batteries, guide rails, and controllers. This prevents the internal space of the suitcase from being encroached upon by guide rails or batteries, improving the effective utilization of internal storage space and facilitating the storage of large items. The front and / or rear wheels serve as drive wheels, enabling the electric suitcase to move electrically. The lightweight integrated chassis helps reduce the drive power of the drive wheels or increase the load-bearing capacity of the electric suitcase.

[0034] Furthermore, the steering lever and front wheels are mounted on the integrated chassis via a first slide rail.

[0035] The front wheels and steering lever are mounted on the frame via a retractable first slide rail. When the slide extends outward, it helps to increase the wheelbase between the front and rear wheels, improves the stability of the electric suitcase and expands the range of users. It also increases the distance between the control lever and the suitcase, improving the comfort of steering, especially suitable for users with longer arms. Attached Figure Description

[0036] Figure 1 This is a perspective view of Embodiment 1 of the present invention in a folded state.

[0037] Figure 2 This is a perspective view of Embodiment 1 of the present invention in an extended state.

[0038] Figure 3 This is a three-dimensional explosion diagram of Embodiment 1 of the present invention.

[0039] Figure 4 This is a perspective view of Embodiment 1 of the present invention with the box body omitted.

[0040] Figure 5 yes Figure 4 A 3D view diagram with the cover plate and steering lever further omitted.

[0041] Figure 6 This is a three-dimensional schematic diagram of the frame of an embodiment of the present invention.

[0042] Figure 7 This is another perspective view of the frame of Embodiment 1 of the present invention.

[0043] Figure 8 This is a perspective view of Embodiment 2 of the present invention in an extended state.

[0044] Figure 9 This is a perspective view of Embodiment 2 of the present invention with the box body omitted.

[0045] Figure 10 yes Figure 9 A three-dimensional diagram with the cover plate omitted.

[0046] Figure 11 This is a three-dimensional schematic diagram of the frame of Embodiment 2 of the present invention.

[0047] Figure 12 This is another perspective view of the frame of Embodiment 2 of the present invention. Detailed Implementation

[0048] The present invention will now be described in detail with reference to the accompanying drawings. Example

[0049] like Figures 1 to 8 As shown, the electric suitcase 1000 has a lightweight and high-strength integrated chassis 001, a front wheel 111 installed through a first interface 110, a rear wheel 122 installed through a second interface 120, a cover plate 200 installed on the integrated chassis 001, a case body 300 detachably installed on the integrated chassis 001, and a direction control lever 400 rotatably installed on the front side of the integrated chassis 001.

[0050] Preferably, the steering lever 400 and the front wheel 111 are mounted on the integrated chassis via the first slide rail 130.

[0051] Preferably, the integrated chassis 001 has a one-piece molded frame 100. The frame 100 is disc-shaped, and the maximum width of the frame 100 is less than the maximum length of the frame. A first interface 110 for mounting the front wheel 111 is formed on the frame 100. A second interface 120 for mounting the rear wheel 122 is formed on the frame 100.

[0052] Preferably, a battery receiving portion 140 is formed on the inner side of the frame 100, and the side wall 143 of the battery receiving portion 140 extending from the bottom 101 of the frame 100 along the height direction 01 serves as the first reinforcing rib of the frame.

[0053] Preferably, the battery receiving portion 140 is disposed in the middle of the width direction 02 of the frame 100; the inner cavity 141 of the battery receiving portion 140 extends along the length direction 03 of the frame 100; the battery receiving portion 140 is a downward-opening concave cavity.

[0054] Preferably, the battery 500 is installed in the inner cavity 141 via the battery box 510. The battery cover 520 seals the battery 500 within the battery receiving portion 140.

[0055] Preferably, the battery receiving portion 140 has a loading and unloading opening 142 on the rear side along the length direction 03 so as to load and unload the battery from the rear side.

[0056] In other embodiments, the inner cavity 141 is not limited to extending along the length direction 03, but may also extend along the width direction 02.

[0057] In other embodiments, the battery receiving portion 140 is a rearward-facing recess or a recess with an opening on a side along the width direction 02. When the battery receiving portion 140 is a recess with an opening on a side along the width direction 02, it facilitates the installation and removal of the battery from the side, and the battery is less susceptible to accidental impacts, thus improving safety and reliability.

[0058] Preferably, the first interface 110 and the second interface 120 may be selectively fitted with drive wheels.

[0059] Preferably, the first slide rail 130 is mounted on the first interface 110; the front wheel 111 is mounted on the slide table 131 of the first slide rail 130.

[0060] Preferably, the slide table 131 is slidably mounted on the first interface 110 via pulleys 132. The pulleys 132 are rotatably mounted on the first interface 110, and their axis of rotation extends along the height direction O1. The slide table 131 has cylindrical guide surfaces 133 on both sides, and the working surface of the pulleys 132 has grooves 134 corresponding to the cylindrical guide surfaces 133.

[0061] Preferably, an electric push rod 190 is installed between the first slide rail 130 and the frame 100. The electric push rod 190 is used to control the slide table 131 to slide along the length direction 03, that is, to control the slide table 131 to extend and retract along the length direction 03. Preferably, the base 191 of the electric push rod 190 is fixed to the top of the battery receiving portion 140, and the telescopic rod 192 of the electric push rod 190 is fixed to the slide table 131. The base 191 is preferably fixed to the top of the battery receiving portion 140 by a tube clamp 193.

[0062] Obviously, the first slide rail 130 is not limited to the specific structural form mentioned above, and can also be other forms of linear slide rails.

[0063] Preferably, the front wheel 111 is a drive wheel, which is mounted on the slide 131 in an adjustable direction via the front fork 112.

[0064] Preferably, the front side of the frame 100 is integrally formed with a front wheel receiving cavity 150; the rear side of the frame 100 is integrally formed with a rear wheel receiving cavity 160; the cavity wall 151 of the front wheel receiving cavity 150 and the cavity wall 161 of the rear wheel receiving cavity 160 both serve as the second reinforcing ribs of the frame 100.

[0065] Preferably, the pop-out foot pedal 170 is installed on the front side of the frame 100 via a tube 171, which extends along the width direction 02 of the frame 100 and is fixed to the frame 100.

[0066] Preferably, the first interface 110 is the top of a hollow protrusion 102 extending from the bottom 101 of the frame 100 along the height direction 01. The hollow protrusion 102 can serve as a third reinforcing rib of the frame 100. The hollow protrusion 102 not only provides support for the first slide rail 130, but also strengthens the structural strength of the frame 100, which is beneficial for the frame 100 to be thinner and lighter.

[0067] Preferably, the cavity wall 151 of the front wheel receiving cavity 150 includes a rear sidewall 152 located on the rear side along the length direction 03, and the hollow protrusion 102 has a front sidewall 103 located on the front side along the length direction 03. The two sidewalls of the tube body 171 along the length direction 03 abut against the rear sidewall 152 and the front sidewall 103 respectively, that is, the rear sidewall 152 and the front sidewall 103 are used to clamp the tube body 171. This greatly improves the reliability of the tube body 171 fixation. Preferably, the tube body 171 can also be fixed to the bottom 101 of the frame 100 by welding, bonding, threading, or riveting.

[0068] Preferably, the cover plate 200 is installed on the top of the frame 100; the support frame 180 is installed on the frame 100; the upper side of the support frame 180 abuts against the lower side of the cover plate 200.

[0069] Preferably, the lower side of the support frame 180 abuts against the top of the battery housing 140 via a first column (not shown in the figure). This can greatly increase the load-bearing capacity of the support frame 180.

[0070] Preferably, the lower side of the support frame 180 abuts against the bottom 101 of the frame 100 via a second column (not shown in the figure). This can greatly increase the load-bearing capacity of the support frame 180. Preferably, the support frame 180 is fixed to the frame 100 by riveting or threading.

[0071] Preferably, the rear wheel 122 is a driven wheel, and a pair of rear wheels 122 are connected by a wheel axle 123. The wheel axle 123 is mounted on the second interface 120 by a seat 124.

[0072] In other embodiments, the rear wheel is not limited to being connected via axle 123; the rear wheel 122 can be a swivel wheel or other type of caster that is independently mounted on the frame 100.

[0073] Preferably, the second interface 120 is a recess 125 extending from the bottom 101 of the frame 100 along the height direction 01. The recess 125 has a cavity that matches the shape of the seat 124. The seat 124 is preferably fixed to the frame 100 by means of welding, bonding, threading, or riveting.

[0074] Preferably, the frame 100 is formed with a first auxiliary reinforcing rib 105 extending from the bottom 101 along the height direction 01 and along the width direction 02, and a second auxiliary reinforcing rib 106 extending from the bottom 101 along the height direction 01 and along the length direction 03.

[0075] Preferably, the first auxiliary reinforcing rib 105 and the second auxiliary reinforcing rib 106 are hollow ribs. Example

[0076] The main difference between this embodiment and Embodiment 1 lies in the mounting and connection method of the front wheels and the steering lever. This embodiment does not have a first slide rail 130. The front wheels 2111 and the steering lever 2400, which are the steering components of the electric suitcase 2000, are directly mounted on the integrated chassis 2001, located on the front side of the integrated chassis 2001, that is, on the front side of the frame 2100 along the length direction 03.

[0077] Preferably, the front wheel 2111 and the steering lever 2400 are mounted on the first interface 2120 of the frame 2100 via an adapter 2600.

[0078] Preferably, the first interface 2120 is the top of the front wheel receiving cavity 2150.

[0079] In one embodiment, the first interface 2120 may also be the sidewall of the front wheel receiving cavity 2150.

[0080] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An integrated chassis for electric suitcases, characterized in that: The integrated chassis has a one-piece molded frame; The frame is disc-shaped, and the maximum width of the frame is less than the maximum length of the frame; The frame is formed with a first interface for mounting the front wheel; The frame has a second interface formed for mounting the rear wheel.

2. The integrated chassis for electric suitcases according to claim 1, characterized in that: A battery housing is formed inside the frame; The sidewall of the battery housing, extending from the bottom of the frame along the height direction, serves as the first reinforcing rib of the frame.

3. The integrated chassis for electric suitcases according to claim 2, characterized in that: The battery housing is located in the middle along the width direction of the frame; The inner cavity of the battery housing extends along the length of the frame. The battery housing is a downward-facing concave cavity.

4. The integrated chassis for electric suitcases according to claim 1, characterized in that: The first interface and the second interface can be selectively fitted with drive wheels.

5. The integrated chassis for electric suitcases according to claim 1, characterized in that: The first slide rail is installed on the first interface; The front wheel is mounted on the slide of the first slide rail.

6. The integrated chassis for electric suitcases according to claim 5, characterized in that: The front wheel is a drive wheel and is mounted on the slide in an adjustable direction via a front fork.

7. The integrated chassis for electric suitcases according to claim 2, characterized in that: The front side of the frame has an integrally formed front wheel receiving cavity; The rear side of the frame is integrally formed with a rear wheel receiving cavity; The walls of the front wheel cavity and the rear wheel cavity both serve as the second reinforcing ribs of the frame.

8. The integrated chassis for electric suitcases according to claim 2, characterized in that: A pop-out foot pedal is installed on the front side of the frame via a tube that extends along the width of the frame and is fixed to the frame.

9. The integrated chassis for an electric suitcase according to claim 2, characterized in that: A cover plate is installed on top of the frame. A support frame is installed on the frame. The upper side of the support frame abuts against the lower side of the cover plate.

10. An electric suitcase, characterized in that, The integrated chassis for electric suitcases according to any one of claims 1 to 9 further comprises: The front wheel is installed through the first interface; The rear wheel is installed via the second interface; A cover plate installed on the integrated chassis; A housing that can be detachably mounted on the integrated chassis; A steering lever is rotatably mounted on the front side of the integrated chassis.

11. The integrated chassis for an electric suitcase according to claim 10, characterized in that: The steering lever and the front wheel are mounted on the integrated chassis via a first slide rail.

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