A luggage case with easy replacement of the wheels
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU MINGSHENG TRAVEL PRODUCTS CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-06-26
Smart Images

Figure CN224403071U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of luggage technology, specifically to a luggage with easily replaceable wheels. Background Technology
[0002] A suitcase, also known as a travel case or rolling case, is a box used to carry items when traveling. It is a type of luggage. The wheels at the bottom of a suitcase are usually fixed to the suitcase with bolts.
[0003] In the existing technology, if the wheels of a suitcase are damaged during use, the operator needs to carry a spare wheel with them and use tools to disassemble the damaged wheel in order to replace it. Therefore, it is difficult to replace the wheels at any time. Summary of the Invention
[0004] The purpose of this invention is to overcome the problem in the prior art that if the wheels of a suitcase are damaged during use, the operator needs to carry a spare wheel with them and use tools to disassemble the damaged wheel in order to replace it, thus making it difficult to replace the wheel at any time.
[0005] Based on the above technical concept, the technical solution adopted by this utility model is as follows:
[0006] A suitcase with easily replaceable wheels includes a suitcase body. The bottom of the suitcase body has four mounting brackets arranged in a rectangular pattern. A rotating double-wheel frame is rotatably mounted inside the mounting bracket. Several positioning mechanisms are provided inside the mounting bracket. A stop rod is movably inserted into the side wall of the mounting bracket. The stop rod is used to push the positioning mechanism to move so that the end of the positioning mechanism is movably inserted into the inner wall of the rotating double-wheel frame.
[0007] Further defining the above technical solution, the side wall of the housing is threaded with a number of fastening bolt groups corresponding to the mounting bracket, and the ends of the fastening bolt groups are inserted into the housing and threadedly connected to the mounting bracket.
[0008] Further defining the above technical solution, the mounting bracket is U-shaped, and a ring is fixedly installed inside the mounting bracket. The inner side of the ring has mounting slots corresponding to the number of positioning mechanisms, and the positioning mechanisms are installed in the mounting slots.
[0009] Further defining the above technical solution, the rotary double-wheel frame includes a rotating ring and two roller frames. The rotating ring is movably sleeved on the outer wall of the circular ring, and the two roller frames are symmetrically arranged on the outer wall of the rotating ring. A wheel is installed inside each of the two roller frames.
[0010] Further defining the above technical solution, the positioning mechanism includes a positioning rod and a first spring, the positioning rod being movably inserted into the mounting groove, and the positioning rod being connected to the inner wall of the mounting groove by sleeved first spring.
[0011] Further defining the above technical solution, one end of the positioning rod passes through the mounting groove and is movably inserted into the inner wall of the rotating ring, while the other end of the positioning rod abuts against the outer wall of the abutment rod.
[0012] Further defining the above technical solution, the abutting rod includes a round-headed rod and a disc. One end of the round-headed rod passes through the mounting bracket and is inserted into the inner wall of the ring, and the end of the round-headed rod abuts against the end of the positioning rod. The disc is fixedly mounted on the other end of the round-headed rod, and the disc is connected to the mounting bracket by a second spring.
[0013] To further define the above technical solution, a plurality of protrusions are fixedly provided on the outer wall of the disc, and the surface of the protrusions is provided with anti-slip texture.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] When the rotating double-wheel frame is damaged during use, the positioning mechanism is retracted and separated from the rotating double-wheel frame by pulling the abutment rod. At this time, the rotating double-wheel frame loses its limit. Then the operator rotates the rotating double-wheel frame 180 degrees to replace the rotating double-wheel frame. Therefore, the rotating double-wheel frame can be replaced at any time.
[0016] When the operator releases the disc, the second spring pulls the disc and the round head rod back to their original positions, which in turn causes the round head rod to push the positioning rod back to its original position, so that the positioning rod can be inserted into the rotating ring, thereby fixing the rotating ring on the ring. Therefore, it is easier to fix the wheel body. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional structural diagram of a suitcase with easily replaceable wheels according to the present invention;
[0019] Figure 2 This is a partial three-dimensional cross-sectional view of a suitcase with easily replaceable wheels according to the present invention.
[0020] Figure 3This is a partial three-dimensional unfolded cross-sectional view of a suitcase with easily replaceable wheels according to the present invention.
[0021] The components include: 1. Housing; 11. Fastening bolt assembly; 2. Mounting bracket; 21. Ring; 22. Mounting groove; 3. Rotary double wheel frame; 31. Rotary ring; 32. Roller frame; 33. Wheel body; 4. Positioning mechanism; 41. Positioning rod; 42. First spring; 5. Abutment rod; 51. Round-headed rod; 52. Disc; 53. Second spring; 54. Protrusion. Detailed Implementation
[0022] The following is in conjunction with the appendix Figures 1-3 The present invention will be described in further detail below.
[0023] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 2 and Figure 3 One embodiment of this utility model is a suitcase with easily replaceable wheels, comprising a suitcase body 1, four mounting brackets 2 arranged in a rectangular pattern on the bottom of the suitcase body 1, and a number of fastening bolt groups 11 corresponding to the number of mounting brackets 2 threaded into the side wall of the suitcase body 1. The ends of the fastening bolt groups 11 are inserted into the suitcase body 1 and threaded into the mounting brackets 2, so that the mounting brackets 2 can be easily fixedly installed on the bottom of the suitcase body 1 by means of the fastening bolt groups 11.
[0024] The mounting frame 2 is equipped with a rotating double-wheel frame 3, and has several positioning mechanisms 4. The mounting frame 2 is U-shaped, and has a fixed ring 21 inside. The inner side of the ring 21 has mounting slots 22 corresponding to the number of positioning mechanisms 4. The positioning mechanisms 4 are installed in the mounting slots 22. The mounting frame 2 facilitates the installation of the rotating double-wheel frame 3, and the mounting slots 22 facilitate the installation of the positioning mechanisms 4.
[0025] The rotary double-wheel frame 3 includes a rotating ring 31 and two roller frames 32. The rotating ring 31 is movably sleeved on the outer wall of the circular ring 21, and the two roller frames 32 are symmetrically arranged on the outer wall of the rotating ring 31. A wheel 33 is installed inside each of the two roller frames 32. By mounting the rotating ring 31 on the circular ring 21, the two roller frames 32 and the wheel 33 can rotate, thereby realizing the replacement of the wheel 33. When one wheel 33 is damaged, the roller frame 32 can be rotated directly to move out a new wheel 33, thus facilitating the operator to continue using the device.
[0026] The positioning mechanism 4 includes a positioning rod 41 and a first spring 42. The positioning rod 41 is movably inserted into the mounting groove 22. The positioning rod 41 is connected to the inner wall of the mounting groove 22 by the first spring 42. The first spring 42 facilitates the installation of the positioning rod 41 inside the mounting groove 22.
[0027] A contact rod 5 is movably inserted into the side wall of the mounting bracket 2. The contact rod 5 is used to push the positioning mechanism 4 to move so that the end of the positioning mechanism 4 is movably inserted into the inner wall of the rotating double wheel frame 3. One end of the positioning rod 41 passes through the mounting groove 22 and is movably inserted into the inner wall of the rotating ring 31. The other end of the positioning rod 41 abuts against the outer wall of the contact rod 5. When the contact rod 5 abuts against the positioning rod 41, it pushes the positioning rod 41 to move, thereby causing the positioning rod 41 to be inserted into the rotating ring 31, so as to fix the rotating ring 31 on the ring 21, thereby fixing the position of the roller frame 32.
[0028] The abutment rod 5 includes a round-headed rod 51 and a disc 52. One end of the round-headed rod 51 passes through the mounting bracket 2 and inserts into the inner wall of the ring 21, and the round-headed rod 51 abuts against the end of the positioning rod 41. The disc 52 is fixedly mounted on the other end of the round-headed rod 51. The disc 52 is connected to the mounting bracket 2 by a second spring 53. When the operator pulls the disc 52 to move, it drives the round-headed rod 51 to move synchronously. When the round-headed rod 51 separates from the positioning rod 41, the first spring 42 pushes the positioning rod 41 to move and separate from the rotating ring 31, thereby causing the roller frame 32 to lose its limit and making it easy for the operator to rotate the roller frame 32. When the operator releases the disc 52, the second spring 53 pulls the disc 52 and the round-headed rod 51 back to their original positions, thereby causing the round-headed rod 51 to push the positioning rod 41 back to its original position, so that the positioning rod 41 is inserted into the rotating ring 31, thereby fixing the rotating ring 31 on the ring 21.
[0029] Several protrusions 54 are fixedly provided on the outer wall of the disc 52. The surface of the protrusions 54 is provided with anti-slip texture. The protrusions 54 facilitate the operator to pull the disc 52 to move, and the anti-slip texture reduces the possibility of slipping when the operator pulls the protrusions 54.
[0030] Working principle: When using this luggage with easy-to-change wheels, if the rotating double wheel frame 3 is damaged during use, the positioning mechanism 4 is retracted and separated from the rotating double wheel frame 3 by pulling the abutment rod 5. At this time, the rotating double wheel frame 3 loses its limit. Then the operator rotates the rotating double wheel frame 3 180 degrees to replace the rotating double wheel frame 3. Then the abutment rod 5 is released to reset it and push the positioning mechanism 4 to move, thereby limiting and fixing the rotating double wheel frame 3 through the positioning mechanism 4.
[0031] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments, which is intended to enable those skilled in the art to understand and apply the present invention. However, it should not be assumed that the specific implementation of the present invention is limited to these descriptions.
Claims
1. A suitcase with easily replaceable wheels, comprising a suitcase body (1), characterized in that, The bottom of the box (1) is provided with four mounting brackets (2) arranged in a rectangular pattern. A rotating double wheel frame (3) is rotatably arranged inside the mounting bracket (2). Several positioning mechanisms (4) are provided inside the mounting bracket (2). Abutment rod (5) is movably inserted into the side wall of the mounting bracket (2). The abutment rod (5) is used to push the positioning mechanism (4) to move so that the end of the positioning mechanism (4) is movably inserted into the inner wall of the rotating double wheel frame (3).
2. The suitcase with easily replaceable wheels according to claim 1, characterized in that, The side wall of the housing (1) is threaded with a number of fastening bolt groups (11) corresponding to the mounting bracket (2). The ends of the fastening bolt groups (11) are inserted into the housing (1) and threadedly connected to the mounting bracket (2).
3. The suitcase with easily replaceable wheels according to claim 1, characterized in that, The mounting bracket (2) is U-shaped, and a ring (21) is fixedly installed inside the mounting bracket (2). The inner side of the ring (21) has mounting slots (22) with a number corresponding to the positioning mechanism (4). The positioning mechanism (4) is installed in the mounting slot (22).
4. The suitcase with easily replaceable wheels according to claim 3, characterized in that, The rotating double wheel frame (3) includes a rotating ring (31) and two roller frames (32). The rotating ring (31) is movably sleeved on the outer wall of the ring (21). The two roller frames (32) are symmetrically arranged on the outer wall of the rotating ring (31). A wheel body (33) is installed in each of the two roller frames (32).
5. The suitcase with easily replaceable wheels according to claim 3, characterized in that, The positioning mechanism (4) includes a positioning rod (41) and a first spring (42). The positioning rod (41) is movably inserted into the mounting groove (22). The positioning rod (41) is connected to the inner wall of the mounting groove (22) by sleeved first spring (42).
6. The suitcase with easily replaceable wheels according to claim 5, characterized in that, One end of the positioning rod (41) passes through the mounting groove (22) and is movably inserted into the inner wall of the rotating ring (31), while the other end of the positioning rod (41) abuts against the outer wall of the abutting rod (5).
7. The suitcase with easily replaceable wheels according to claim 6, characterized in that, The abutting rod (5) includes a round-headed rod (51) and a disc (52). One end of the round-headed rod (51) passes through the mounting bracket (2) and is inserted into the inner wall of the ring (21). The round-headed rod (51) abuts against the end of the positioning rod (41). The disc (52) is fixedly installed at the other end of the round-headed rod (51). The disc (52) is connected to the mounting bracket (2) by a second spring (53).
8. The suitcase with easily replaceable wheels according to claim 7, characterized in that, The outer wall of the disc (52) is fixedly provided with a number of protrusions (54), and the surface of the protrusions (54) is provided with anti-slip texture.