The cushioning structure of the suitcase and its lid

The cushion structure for suitcase lids stabilizes the lid at any angle using a gear set with damping members, addressing issues of sudden closure and damage, enhancing safety and usability.

JP3255237UActive Publication Date: 2026-03-26チェンチュアンウー
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2026-01-28
Publication Date
2026-03-26

AI Technical Summary

Technical Problem

Conventional suitcases suffer from issues such as sudden lid closure causing noise, damage to the case body, potential injury to users, and inconvenience when using the lid in confined spaces due to limited opening angles.

Method used

A cushion structure for the suitcase lid incorporating a base with sliding grooves, a gear set with a main gear and damping damper members, and a housing to stabilize the lid at any opening angle by reducing movement speed through fluid resistance.

Benefits of technology

Prevents sudden lid closure, protects against damage and injury, and allows stable lid positioning for convenient use in various spaces.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a cushioning structure for a suitcase lid that allows the lid to be stably stopped at any opening or closing angle, and a suitcase equipped with this cushioning structure. [Solution] The cushion structure 1 for a suitcase lid according to the present invention is applied to a suitcase, which comprises a suitcase lid and a suitcase body, and the cushion structure for the lid includes a base 10, a body 20, a rack 40, and a gear set. The suitcase body is connected to the base and has two sliding grooves. The suitcase lid is connected to the body and is movably connected to the two sliding grooves. The gear set is installed on the body and comprises a main gear and a plurality of cushioning damper members. The main gear is movably connected to the rack. The plurality of cushioning damper members are pivotally attached to the main gear. When the suitcase lid moves relative to the suitcase body, the suitcase lid causes the body to move on the two sliding grooves and the main gear to move on the rack, and the cushioning damper members reduce the speed at which the main gear moves.
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Description

Technical Field

[0001] The present invention relates to a cushion structure of a suitcase and its lid, and more particularly, to a cushion structure of a suitcase and its lid that can stably stop the suitcase lid at any opening and closing angle.

Background Art

[0002] With the spread of travel and business trips, suitcases have become an essential piece of equipment for modern people. In conventional suitcases, the connection between the case body and the lid body is usually joined by a simple hinge.

Summary of the Invention

Problems to be Solved by the Invention

[0003] However, in the actual use process, when the user opens and closes the suitcase, the lid body immediately falls down due to its own weight. If the user accidentally lets go of their hand, the lid body will directly hit the case body, generating a large noise, and in the long term, the case body structure may be damaged or deformed easily. Also, when the lid body closes suddenly unexpectedly, the user's finger may be caught and it is easy to get injured, especially in terms of safety for children or the elderly with weak strength. In addition, the conventional suitcase lid usually has only two states, "fully open" and "fully closed". When the user takes out only some items in a narrow space (for example, inside a high-speed railway vehicle), the user can only hold down the lid body with one hand so that it does not fall and take out the items with the other hand, and such an operation method is extremely inconvenient.

[0004] Overall, the conventional suitcase structure is expected to be improved in terms of safety, durability, and convenience in use. Therefore, how to research and develop a structure with a buffering function that can stably stop the lid body at any opening and closing angle has become an issue to be considered.

[0005] In view of the conventional situation, the main objective of this invention is to provide a cushion structure for a suitcase lid that allows the lid to be stably stopped at any opening and closing angle. [Means for solving the problem]

[0006] To achieve the above objective, a lid cushion structure, which is one aspect of the present invention, is applied to a suitcase, the suitcase comprising a suitcase lid and a suitcase body, and the lid cushion structure includes a base, a body, a rack, and a gear set. The suitcase body is connected to the base and has two sliding grooves. The suitcase lid is connected to the body and is movably connected to the two sliding grooves. The gear set is installed on the body and comprises a main gear and a plurality of cushioning damper members. The main gear is movably connected to the rack. The plurality of cushioning damper members are pivotally attached to the main gear. When the suitcase lid moves relative to the suitcase body, the suitcase lid causes the body to move on the two sliding grooves and the main gear to move on the rack, and the cushioning damper members reduce the speed of movement of the main gear.

[0007] According to one embodiment of the present invention, the gear set further comprises a plurality of side gears, each installed on both sides of the main gear and located within a plurality of cushioning damper members.

[0008] According to one embodiment of the present invention, the main body further comprises a storage slot, and the gear set is installed in the storage slot.

[0009] According to one embodiment of the present invention, the main body further comprises two sliding parts, each positioned in two sliding grooves.

[0010] According to one embodiment of the present invention, the lid cushion structure further comprises a housing that covers the rack and base.

[0011] To solve the above-mentioned problems and achieve the objective, another embodiment of the present invention provides a suitcase comprising a suitcase lid, a suitcase body, and a cushioning structure for the lid. The suitcase lid is pivotally attached to the suitcase body. The cushioning structure for the lid includes a base, a body, a rack, and a gear set. The base is connected to the suitcase body and has two sliding grooves. The suitcase lid is connected to the body and is movably connected to the two sliding grooves. The gear set is installed on the body and comprises a main gear and at least one cushioning damper member. The main gear is movably connected to the rack. The cushioning damper member is pivotally attached to the main gear. When the suitcase lid moves relative to the suitcase body, the suitcase lid causes the body to move on the two sliding grooves and the main gear to move on the rack, and the cushioning damper member reduces the speed at which the main gear moves. [Effects of the Invention]

[0012] This invention has the effect of preventing the suitcase lid from falling off at high speed.

[0013] Other objectives, configurations, and effects of this invention will become clear from the following section on embodiments of the invention. [Brief explanation of the drawing]

[0014] [Figure 1] This is a schematic diagram showing a cushion structure for a suitcase and lid according to one embodiment of the present invention. [Figure 2] This is a schematic diagram showing a lid cushion structure according to one embodiment of the present invention. [Figure 3] This is an exploded view showing the cushion structure of a lid according to one embodiment of the present invention. [Figure 4] This is a schematic diagram showing the cushion structure of the lid, excluding the suitcase and housing, according to one embodiment of the present invention. [Figure 5]This is a schematic diagram showing a cushion structure for a suitcase and lid that is not fully opened, according to one embodiment of the present invention. [Figure 6] This is a schematic diagram showing a fully opened suitcase and lid cushion structure according to one embodiment of the present invention. [Modes for carrying out the invention]

[0015] The embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to the embodiments described below, and can take various forms as long as they fall within the technical scope of the present invention.

[0016] First, an example of a specific embodiment of the suitcase and its lid cushion structure according to the present invention will be described with reference to Figures 1 to 6.

[0017] Figure 1 is a schematic diagram showing a cushion structure for a suitcase and lid according to one embodiment of the present invention. Figure 2 is a schematic diagram showing a cushion structure for a lid according to one embodiment of the present invention. Figure 3 is an exploded view showing a cushion structure for a lid according to one embodiment of the present invention. Figure 4 is a schematic diagram showing a cushion structure for a lid, excluding the suitcase and housing, according to one embodiment of the present invention. Figure 5 is a schematic diagram showing a cushion structure for a suitcase and lid that is not fully opened according to one embodiment of the present invention. Figure 6 is a schematic diagram showing a cushion structure for a fully opened suitcase and lid according to one embodiment of the present invention.

[0018] As shown in FIGS. 1 to 3, the suitcase 100 and the cushion structure 1 of its lid according to an embodiment of the present invention can stably stop the suitcase lid at an arbitrary opening and closing angle. The suitcase 100 includes a suitcase lid 110, a suitcase body 120, and a cushion structure 1 of the lid. The suitcase lid 110 and the suitcase body 120 are pivotally attached to each other, and the suitcase lid 110 can be opened and closed with respect to the suitcase body 120. The cushion structure 1 of the lid is installed at the pivoting location between the suitcase lid 110 and the suitcase body 120, and the cushion structure 1 of the lid includes a base 10, a main body 20, a gear set 30, a rack 40, and a housing 50.

[0019] In one embodiment of the present invention, the base 10 is connected to the inner edge of the suitcase body 120, and the base 10 is used to place and support the members inside the cushion structure 1 of the lid. The base 10 has two sliding grooves 11, and the two sliding grooves 11 are installed in parallel with each other and extend along the length direction of the base 10, and are used to stably reciprocate and slide the main body 20 while limiting its position along the two sliding grooves 11.

[0020] In one embodiment of the present invention, the main body 20 is connected to the suitcase lid 110 and is movably connected to the two sliding grooves 11 of the base 10. The main body 20 has two sliding portions 21 and a storage slot 22. The two sliding portions 21 are respectively located in the two sliding grooves 11. The combination of the sliding portion 21 and the sliding groove 11 enables the main body 20 to stably slide along the two sliding grooves 11 without lateral displacement. The storage slot 22 is a hollow space, and its size is used to install the gear set 30 therein and has the space necessary to rotate the gear set 30 inside.

[0021] In one embodiment of the present invention, the gear set 30 is installed in a storage slot 22 of the main body 20. The gear set 30 comprises a main gear 31, two damping damper members 32, and four side gears 33. The main gear 31 is a gear on which a rotating shaft is installed, and is movably connected to the rack 40 in a meshing manner, allowing the main gear 31 to roll and displace along the toothed track of the rack 40. The two damping damper members 32 are fitted with damping oil cases and are pivotally attached to the rotating shafts on both sides of the two damping damper members 32 and the main gear 31, with the rotating shaft of the main gear 31 being inserted into the case of the damping damper member 32. In this way, when the main gear 31 rotates, the damping oil in the damping damper members 32 generates a resistance force, reducing the rotational speed of the rotating shaft of the main gear 31, and consequently reducing the speed at which the main gear 31 moves along the rack 40. It should be noted that the number of cushioning damper members 32 is not limited to two, but can be flexibly changed to any number of them based on the weight required for the suitcase lid 110.

[0022] The four side gears 33 are positioned on both the left and right sides of the main gear 31 and within two damping members 32. Two of the side gears 33 are fixed on the rotation axis of the main gear 31 and rotate synchronously in its path, while the other two side gears 33 mesh with the two side gears 33 fixed on the rotation axis of the main gear 31. The installation of four side gears 33 increases the total effective contact area with the damping oil inside the damping member 32, significantly improving the efficiency of fluid resistance against rotational energy and thereby enhancing the damping effect that reduces rotational speed. However, the number and gear shape of the side gears 33 can be adjusted based on the required damping coefficient and are not limited to four; any number may be used.

[0023] As shown in FIGS. 3 and 5, in one embodiment of the present invention, the rack 40 is elongated and arc-shaped and is connected to the base 10. The teeth of the rack 40 are directed towards the main gear 31 and are used to move the main gear 31 along the arc surface path of the rack 40. The housing 50 covers the base 10, the body 20, the gear set 30, and the rack 40, and provides a physical protection barrier to prevent foreign objects (e.g., clothes or hard objects stored in a suitcase) from hitting, getting caught, or pressing on the delicate components inside the lid cushion structure 1, which could damage the structure or interfere with the operation.

[0024] As shown in FIGS. 5 and 6, in one embodiment of the present invention, when the user applies a force to open the suitcase lid 110, the suitcase lid 110 pivots relative to the suitcase body 120. Since the body 20 is connected to the suitcase lid 110 and the base 10 and the rack 40 are fixed to the suitcase body 120, when the suitcase lid 110 is opened, the body 20 is synchronously and interlockingly moved along the two sliding grooves 11, and the body 20 receives a force and the gear set 30 installed in the storage slot 22 of the body 20 is moved in an interlocking manner.

[0025] Specifically, the main gear 31 of the gear set 30 rolls upward from the bottom of the rack 40 along the arc-shaped teeth of the rack 40, and is linked to rotate within the buffer damper member 32. In this process, the main gear 31's rotation axis enters the buffer damper member 32, and the contact area between the side gear 33 and the damping oil increases, causing the damping oil to generate a resistive force (damping) that slows down the rotational speed of the rotation axis. In this way, the resistive force generated by the buffer damper member 32 sufficiently counteracts the weight of the suitcase lid 110 itself, preventing the lid from suddenly closing due to gravity or opening too quickly, and allowing the suitcase lid 110 to stop stably at any opening and closing angle. Furthermore, the housing 50 is designed so as not to interfere with items inside the suitcase during the meshing process between the gears and the rack, thereby maintaining the smoothness of the buffering operation.

[0026] When a user applies force to close the suitcase lid 110, the suitcase lid 110 pivots downward relative to the suitcase body 120. At this time, the body 20 interlocks the main gear 31 of the gear set 30 so that it moves from top to bottom along the teeth of the rack 40. As the suitcase lid 110 descends, it accelerates downward due to gravity, but at this time, the fluid resistance generated between the damping oil in the buffer damper member 32 and the side gear 33 applies a buffer torque to the rotation axis of the main gear 31. In this way, even if the user releases both hands, the suitcase lid 110 stops stably at any opening and closing angle, preventing it from directly hitting the suitcase body 120, effectively preventing the user's fingers from getting caught and injured, or the mechanism from being damaged.

[0027] The structural design of the suitcase 100 and its lid cushion structure 1 according to this invention allows the suitcase 100 and its lid cushion structure 1 to effectively counteract the weight of the suitcase lid by combining a cushioning damper member with the engagement of the gear set and the rack, thereby achieving the function of opening and stopping the suitcase lid at any desired position. Furthermore, the design in which the side gear is installed within the cushioning damper member significantly increases the contact area with the damping oil, providing an excellent damping effect even in a small space. The main body slides within two sliding grooves of the base by two sliding parts, ensuring stability during operation and preventing shaking. The housing isolates the contents of the suitcase from collisions, protecting the internal precision gear and rack structure, extending the service life, and ensuring the reliability of the cushioning function.

[0028] Although embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are also included within the scope of the spirit of the present invention. [Explanation of symbols]

[0029] 1. Lid cushioning structure 10 base 11. Sliding grooves 20 Main unit 21 Slide section 22 storage slots 30 Gear Set 31 Main Gear 32 Buffer damper member 33 Side Gear 40 racks 50 Housing 100 suitcases 110 Suitcase Lid 120 Suitcase Body

Claims

1. A cushioning structure for a lid, applicable to a suitcase that includes a suitcase lid and a suitcase body, A base connected to the suitcase body and including two sliding grooves, The main body is connected to the lid of the suitcase and is movably connected to the two sliding grooves, Rack and, The main body is equipped with a gear set, The aforementioned gear set is A main gear is movably connected to the aforementioned rack, The system comprises a plurality of cushioning damper members pivotally attached to the main gear, A cushioning structure for a suitcase lid, characterized in that when the suitcase lid moves relative to the suitcase body, the suitcase lid causes the body to move on the two sliding grooves and the main gear to move on the rack, and the moving speed of the main gear is reduced by the plurality of cushioning damper members.

2. The cushion structure for a lid according to claim 1, characterized in that the gear set further comprises a plurality of side gears, the plurality of side gears being installed on both sides of the main gear and each being located within the plurality of cushioning damper members.

3. The lid cushion structure according to claim 2, characterized in that the main body further comprises a storage slot, and the gear set is installed in the storage slot.

4. The lid cushion structure according to claim 3, characterized in that the main body further comprises two sliding parts positioned in the two sliding grooves.

5. The lid cushion structure according to claim 4, further comprising a housing that covers the rack and the base.

6. Suitcase lid and The suitcase body to which the suitcase lid is pivotally attached, It features a cushioned lid structure, The cushion structure of the lid is, A base connected to the suitcase body and including two sliding grooves, The main body to which the suitcase lid is connected and which is movably connected to the two sliding grooves, Rack and, The main body is equipped with a gear set, The aforementioned gear set is A main gear is movably connected to the aforementioned rack, The system comprises a plurality of cushioning damper members pivotally attached to the main gear, A suitcase characterized in that when the suitcase lid moves relative to the suitcase body, the suitcase lid causes the body to move on the two sliding grooves, and the main gear to move on the rack, and the moving speed of the main gear is reduced by the plurality of cushioning damper members.

7. The suitcase according to claim 6, wherein the gear set further comprises a plurality of side gears, each of which is installed on both sides of the main gear and located within the plurality of cushioning damper members.

8. The suitcase according to claim 7, characterized in that the main body further comprises a storage slot, and the gear set is installed in the storage slot.

9. The suitcase according to claim 8, wherein the main body further comprises two sliding parts positioned in the two sliding grooves.

10. The suitcase according to claim 9, characterized in that the cushion structure of the lid further comprises a housing that covers the rack and the base.