Suitcase caster structure

Abstract

We provide a caster structure for travel bags. [Solution] The system comprises a main body 20, an outer base 30, an inner base 40, and casters 50. The main body has a plate 21, an outer fixing part 23 and an inner fixing part connected to the plate, and a first pin hole 26 formed in the outer fixing part. The outer base has a support part 31 that abuts against the outer fixing part of the main body, a first fitting part connected to the support part, a caster connecting part 32 located on the opposite side of the support part, and a second pin hole. The inner base has a cap 41 connected to the inner fixing part of the main body, a back part 42, a second fitting part 43 that penetrates the main body and fits into the first fitting part of the outer base, and a third pin hole 44. More specifically, by fitting the first fitting part of the outer base and the second fitting part of the inner base together, and inserting a fastening member into the first pin hole of the main body to connect the second pin hole of the outer base and the third pin hole of the inner base, the main body, outer base, and inner base can be fixed together, improving the convenience and durability of the assembly work, and at the same time supporting the casters and allowing the casters to operate flexibly.

Description

Technical Field

[0001] The present invention relates to travel bags, and more particularly to the caster structure of travel bags.

Background Art

[0002] In the prior art, the mounting, durability, and maintenance of the casters of travel bags lack convenience. Common problems, such as loose casters, structurally fragile, and difficult to attach and detach, affect the performance of travel bags.

[0003] The conventional caster structure has problems that the fixing and supporting procedures are complex and it is difficult to tightly connect between structures. Therefore, abnormal noises, shaking, or damage are likely to occur during use, and difficulties in maintenance and replacement increase.

[0004] Therefore, improving the existing caster structure and enhancing the convenience of mounting, maintenance, and replacement as well as the stability of the structure has become an important issue in the related technical field.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The main object of the present invention is to provide a caster structure for travel bags that effectively improves stability and convenience during mounting, ensures durability and service life, and solves the conventional structural drawbacks such as difficult mounting operations, easy loosening of parts, and lack of convenience in maintenance.

Means for Solving the Problems

[0006] To solve the above-mentioned problems, the caster structure of the travel bag comprises a main body, an outer base, an inner base, and a caster. The main body has a plate, an outer fixing part, an inner fixing part, and a first pin hole. The outer fixing part is connected to the plate. The inner fixing part is connected to the plate and the opposite side of the outer fixing part. The first pin hole is formed in the outer fixing part. The outer base has a support part, a first fitting part, a caster connecting part, and a second pin hole. The support part abuts against the outer fixing part of the main body. The first fitting part is connected to the support part. The caster connecting part is located on the opposite side of the support part. The second pin hole is formed in the support part. The inner base has a cap, a back part, a second fitting part, and a third pin hole. The cap is connected to the inner fixing part of the main body. The back part is located on the opposite side of the cap. The second fitting part fits into the first fitting part of the outer base. The third pin hole penetrates the cap and the back part. The casters are attached to the caster connection section of the outer base, and the first pin hole of the main body, the second pin hole of the outer base, and the third pin hole of the inner base are connected via fastening members.

[0007] More specifically, the first fitting portion of the outer base and the second fitting portion of the inner base interlock to securely fasten the inner and outer bases. By inserting fastening members into the corresponding first pin holes of the main body, the second pin hole of the outer base, and the third pin hole of the inner base, the main body, outer base, and inner base are tightly joined and secured, improving the stability and durability when attaching the casters to a travel bag, while simultaneously supporting the casters and allowing them to operate flexibly.

[0008] In relatively preferable cases, the main body has perforations that penetrate the outer and inner fixing parts. The second fitting part of the inner base is inserted into the perforations in the main body. The structural features described above enhance the joint and tightness between the inner base and the main body, strengthen structural integrity, effectively prevent loosening or displacement of parts, and improve the overall reliability and durability of the caster.

[0009] In relatively preferable cases, the main body has perforations that penetrate the outer and inner fixing portions. The first fitting portion of the outer base is inserted into the perforations of the main body. Due to the structural features described above, the outer base and the main body can be fitted together, which not only enhances the fixing effect of the outer base during operation, but also reduces the risk of the structure becoming loose due to repeated pulling and pushing, and effectively extends the service life.

[0010] In relatively preferable cases, the main body has a downwardly convex portion and an upwardly concave portion located on the opposite side of the downwardly convex portion. The outer base has a concave support portion corresponding to the downwardly convex portion of the main body. The inner base has a convex portion corresponding to the upwardly convex portion of the main body. Due to the structural features described above, the components can be precisely positioned and tightly coupled to effectively prevent structural displacement and vibration, thereby improving the load-bearing capacity and impact resistance of the caster structure.

[0011] In relatively favorable cases, the main body has a downward concave portion and an upward convex portion located on the opposite side of the downward concave portion. The outer base has a convex support portion corresponding to the downward concave portion of the main body. The inner base has a concave portion corresponding to the upward convex portion of the main body. Due to the structural features described above, when assembling the parts, multiple positioning interfaces can be configured, strengthening structural support, simultaneously providing displacement prevention, and maintaining structural life and durability.

[0012] In relatively favorable cases, the main body has an upward-sloping section and an upward-sloping section. The outer base has an inclined support section corresponding to the downward-sloping section. The inner base has an inclined section corresponding to the upward-sloping section. The above-described slope design enables automatic correction and positioning functions, prevents displacement and misalignment due to external forces or impact forces, and improves the convenience and stability of assembly work.

[0013] In relatively favorable cases, the first pin hole penetrates the downward and upward inclined portions. The second pin hole penetrates the inclined support portion. The third pin hole penetrates the inclined portion. The aforementioned pin holes allow for precise positioning of the parts. Furthermore, by inserting and fixing the fastening members into the pin holes, the fixing efficiency of the caster structure is greatly improved, and the balance of the passive force can be maintained, so the parts become stable after installation and are less likely to loosen or detach.

[0014] In relatively preferable cases, the support portion of the outer base has multiple ribs. The inner base has multiple ribs on its back. The multiple ribs described above enhance support and distribute the load, increasing the structural strength of the connection point and effectively preventing deformation or damage due to compressive or impact forces.

[0015] In a relatively preferable case, the main body has a connecting edge connected to an outer fixing part. The outer base has a base edge connected to a support part. The base edge abuts against the connecting edge. The plate has a first part and a second part connected to the first part. Connecting the second part and its related components can enhance the structural integrity of the luggage components, improve the rigidity of the luggage, and achieve a unified appearance.

[0016] In relatively preferable cases, the main body has a connecting edge connected to an inner fixing part. The inner base has a base edge connected to the cap. The base edge abuts against the connecting edge. The structural features described above allow each part of the structure to be more tightly connected, and at the same time, the structural airtightness and protectiveness of the travel bag are comprehensively improved, preventing the intrusion of external forces and environmental impact.

[0017] The detailed structure, features, assembly, and method of use of the caster structure for travel bags according to this invention will be clarified through the detailed description of the embodiments below. Furthermore, it should be understood by anyone with common sense in the field of this invention that the following detailed description and the embodiments presented herein are merely examples for explaining this invention and cannot limit the scope of the claims of this invention. [Brief explanation of the drawing]

[0018] [Figure 1] This is a perspective view showing the caster structure of a travel bag according to one embodiment of the present invention. [Figure 2] This is a perspective view of a travel bag caster structure according to one embodiment of the present invention, seen from a different direction. [Figure 3] This is an exploded perspective view showing the caster structure of a travel bag according to one embodiment of the present invention. [Figure 4] This is an exploded perspective view of a travel bag caster structure according to one embodiment of the present invention, viewed from a different direction. [Figure 5] This is a perspective view showing a cross-section of a part of the caster structure of a travel bag according to one embodiment of the present invention. [Modes for carrying out the invention]

[0019] The caster structure of the travel bag according to this invention will be described below with reference to the drawings.

[0020] In the specification and drawings, nouns indicating directionality are expressed based on the direction shown in the drawings. The same symbol indicates structural features of the same or similar parts.

[0021] (One embodiment) As shown in Figures 1 and 2, the caster structure 10 of a travel bag according to one embodiment of the present invention comprises a main body 20, an outer base 30, an inner base 40, a caster 50, and two fastening members B. The two fastening members B fasten together the related components.

[0022] As shown in FIGS. 3 to 5, the main body 20 has a plate 21, an outer fixing portion 23, an inner fixing portion 24, a through hole 25, and two first pin holes 26. The plate 21 has a connecting edge portion 211 that connects the outer fixing portion 23 and the inner fixing portion 24. The outer fixing portion 23 has a downward convex portion 231, a downward concave portion 232, a connecting portion 233, a downward inclined portion 234, and a connecting portion 235 connected in sequence. The inner fixing portion 24 has an upward concave portion 241, an upward convex portion 242, a connecting portion 243, an upward inclined portion 244, and a connecting portion 245 connected in sequence. The through hole 25 penetrates the outer fixing portion 23 and the inner fixing portion 24. The first pin hole 26 penetrates the downward inclined portion 234 and the upward inclined portion 244.

[0023] The outer base 30 has a support portion 31, a caster connecting portion 32, a first fitting portion 33, a second pin hole 34, and a base edge portion 35. The support portion 31 abuts against the outer fixing portion 23 of the main body 20. The support portion 31 has a concave support portion 311, a convex support portion 312, a connecting portion 313, an inclined support portion 314, and a connecting portion 315 connected in sequence. The concave support portion 311 abuts against the downward convex portion 231 and has a plurality of ribs. The convex support portion 312 abuts against the downward concave portion 232. The inclined support portion 314 abuts against the downward inclined portion 234. The caster connecting portion 32 is connected to the caster 50 and has a rotation shaft hole 321. The caster connecting portion 32 and the caster 50 are connected to each other through the rotation shaft hole 321. The first fitting portion 33 is connected to the support portion 31 and corresponds to the through hole 25 of the main body 20. In this embodiment, the second pin hole 34 is a screw hole. The base edge portion 35 is connected to the outside of the support portion 31 and covers the connecting edge portion 211 of the main body 20.

[0024] The inner base 40 has a cap 41, a back 42, a second fitting portion 43, a third pin hole 44, and a base edge portion 45. The cap 41 abuts against the inner fixing portion 24 of the main body 20. The cap 41 has a convex portion 411, a concave portion 412, a connecting portion 413, an inclined portion 414, and a connecting portion 415 that are connected in sequence. The convex portion 411 abuts against the upper concave portion 241. The concave portion 412 abuts against the upper convex portion 242. The inclined portion 414 abuts against the upper inclined portion 244. The back 42 is located on the opposite side of the cap 41 and has a plurality of ribs. The second fitting portion 43 is inserted into the through hole 25 of the main body 20 and fits into the first fitting portion 33 of the outer base 30. The third pin hole 44 corresponds to the first pin hole 26 of the main body 20 and the second pin hole 34 of the outer base 30. The base edge portion 45 is connected to the outside of the cap 41 and covers the connecting edge portion 211 of the main body 20.

[0025] One fastening member B passes through the third pin hole 44 of the inner base 40 and the first pin hole 26 of the main body 20 and is fastened to the second pin hole 34 of the outer base 30. One fastening member B is fastened to the back 42 of the inner base 40 to fix the main body 20, the outer base 30, and the inner base 40.

[0026] The caster 50 has a caster base 51, a shaft 52, and two wheels 53. The caster base 51 is mounted on the caster connecting portion 32 of the outer base 30. The shaft 52 is connected to the caster base 51 and is inserted into the rotation axis hole 321 of the outer base 30. The two wheels 53 are rotatably mounted on the caster base 51.

[0027] In this embodiment, the outer base 30 and the inner base 40 are assembled and fixed by inserting the second fitting portion 43 of the inner base 40 into the perforation 25 of the main body 20 and fitting the first fitting portion 33 of the outer base 30 and the second fitting portion 43 of the inner base 40 together. Subsequently, the positions of the second pin hole 34 and the third pin hole 44 are aligned, and the fastening member B is inserted into the third pin hole 44 and the first pin hole 26 and tightened into the second pin hole 34, thereby fixing the main body 20, the outer base 30 and the inner base 40 together. In contrast, another embodiment may employ a method in which the first fitting portion 33 of the outer base 30 is inserted into the perforation 25 of the main body 20.

[0028] In this embodiment, the inclined support portion 314 of the outer base 30 and the downward inclined portion 234 of the main body 20 correspond to each other [Tomoko Amano (Tomo1)]. The inclined portion 414 of the inner base 40 and the upward inclined portion 244 of the main body 20 correspond to each other. Due to the structural features described above, the outer base 30, the inner base 40 and the main body 20 can be positioned and displacement can be prevented.

[0029] In this embodiment, the concave support portion 311 of the outer base 30 and the downward convex portion 231 of the main body 20 correspond to each other. The convex portion 411 of the inner base 40 and the upward concave portion 241 of the main body 20 correspond to each other [Tomoko Amano (Tomo2)]. Due to the structural features described above, the outer base 30, the inner base 40 and the main body 20 can be positioned and displacement can be prevented.

[0030] In this embodiment, the convex support portion 312 of the outer base 30 and the downward concave portion 232 of the main body 20 correspond to each other. The concave portion 412 of the inner base 40 and the upward convex portion 242 of the main body 20 correspond to each other. Due to the structural features described above, the outer base 30, the inner base 40 and the main body 20 can be positioned and displacement can be prevented.

[0031] As stated above, the present invention is not limited in any way to the embodiments described above, and can be implemented in various forms without departing from the spirit of the invention. [Explanation of Symbols]

[0032] 10: Caster structure 20: Main unit 21: Plate 211: Connecting edge 23:Outer fixing part 231: Downward convex part 232: Downward concave area 233: Connection site 234: Downward slope area 235: Connection site 24:Inner fixed part 241: Upper concave area 242: Upper convex part 243: Connection site 244:Upward slope area 245: Connection site 25: Perforation 26: First pinhole 30: Outer base 31: Support part 311: Concave support part 312: Convex support part 313: Connection site 314: Inclined support part 315: Connection site 32: Caster connection part 321: Rotating shaft hole 33: First mating section 34: Second pin hole 35: Base edge 40: Inner base 41: Cap 411:Convex part 412: Concave area 413: Connection site 414: Inclined part 415: Connection site 42:Back 43: Second mating section 44: Third pinhole 45: Base edge 50: Caster 51: Caster base 52: Shaft 53: Wheels B: Fastening member

Claims

1. It consists of the main body, outer base, inner base and casters, The main body has a plate, an outer fixing portion, an inner fixing portion, and a first pin hole, the outer fixing portion is connected to the plate, the inner fixing portion is connected to the plate and is located on the opposite side of the outer fixing portion, and the first pin hole is formed in the outer fixing portion. The outer base has a support portion, a first fitting portion, a caster connecting portion, and a second pin hole, the support portion abuts against the outer fixing portion of the main body, the first fitting portion is connected to the support portion, the caster connecting portion is located on the opposite side of the support portion, and the second pin hole is formed in the support portion. The inner base has a cap, a back, a second fitting portion, and a third pin hole, the cap is connected to the inner fixing portion of the main body, the back is located on the opposite side of the cap, the second fitting portion fits into the first fitting portion of the outer base, and the third pin hole penetrates the cap and the back. The first pin hole of the main body, the second pin hole of the outer base, and the third pin hole of the inner base are fastened together by a fastening member. A caster structure for a travel bag, characterized in that the caster is attached to the caster connecting portion of the outer base.

2. The main body has perforations that penetrate the outer fixing portion and the inner fixing portion. The caster structure for a travel bag according to claim 1, characterized in that the second fitting portion of the inner base is inserted into the perforation of the main body.

3. The main body has perforations that penetrate the outer fixing portion and the inner fixing portion. The caster structure for a travel bag according to claim 1, characterized in that the first fitting portion of the outer base is inserted into the perforation of the main body.

4. The main body has a downwardly convex portion and an upwardly concave portion located on the opposite side of the downwardly convex portion. The outer base has a concave support portion corresponding to the downward convex portion of the main body, The caster structure for a travel bag according to claim 1, characterized in that the inner base has a convex portion corresponding to the upper concave portion of the main body.

5. The main body has a downward concave portion and an upward convex portion located on the opposite side of the downward concave portion. The outer base has a convex support portion corresponding to the lower concave portion of the main body, The caster structure for a travel bag according to claim 1, characterized in that the inner base has a concave portion corresponding to the upper convex portion of the main body.

6. The main body has a downward-sloping portion and an upward-sloping portion, The outer base has an inclined support portion corresponding to the downward inclined portion, The caster structure for a travel bag according to claim 1, characterized in that the inner base has an inclined portion corresponding to the upward inclined portion.

7. The first pin hole of the main body penetrates the downward-sloping portion and the upward-sloping portion. The second pin hole of the outer base penetrates the inclined support portion. The caster structure for a travel bag according to claim 6, characterized in that the third pin hole of the inner base penetrates the inclined portion.

8. The outer base has a plurality of ribs in the support portion, The caster structure for a travel bag according to claim 1, characterized in that the inner base has a plurality of ribs on the back.

9. The main body has a connecting edge portion connected to the outer fixing portion, The caster structure for a travel bag according to claim 1, characterized in that the outer base is connected to the support portion and has a base edge portion that abuts against the connecting edge portion.

10. The main body has a connecting edge portion connected to the inner fixing portion, The caster structure for a travel bag according to claim 1, characterized in that the inner base is connected to the cap and has a base edge that abuts against the connecting edge.

Images